RESCUE RING

Abstract

Disclosed are improved devices, systems and methods for augmenting external fixation and/or support of damaged or fractured limbs or other anatomies of a patient.

Claims

1. A surgical component kit for modifying an assembled orthopedic fixation frame assembly attached to a patient, comprising a plurality of curved fixation frame plates, each of the plurality of curved fixation frame plates having an elongated plate body with a top surface, a bottom surface, a concave inner edge and a convex outer edge, the plurality of curved fixation frame plates comprising at least a first curved fixation frame plate having a first length and a first radius of curvature and a second curved fixation frame plate having a second length and a second radius of curvature, the first length being substantially equal to the second length and the first radius of curvature being different than the second radius of curvature.

2. The surgical component kit of claim 1, wherein each of the plurality of curved fixation frame plates includes a plurality of openings formed in the elongated plate body extending from the top surface to the bottom surface.

3. The surgical component kit of claim 1, wherein each of the plurality of curved fixation frame plates includes a plurality of indentations formed into the concave inner edge of the elongated plate body.

4. The surgical component kit of claim 1, wherein each of the plurality of curved fixation frame plates includes a plurality of indentations formed into the convex outer edge of the elongated plate body.

5. The surgical component kit of claim 3, wherein each of the plurality of curved fixation frame plates includes a plurality of openings formed in the elongated plate body extending from the top surface to the bottom surface.

6. The surgical component kit of claim 1, further comprising a plurality of connection devices for releasably securing the plurality of curved fixation frame plates to the fixation frame assembly, the each of the plurality of connection devices comprising a base plate having a threaded hole formed therethrough, the base plate including a plurality of arms extending downward from an edge of the base plate, the plurality of arms each having a distal retention tip, the plurality of arms separated at their distal ends by a notched section having a notch width sized and configured to accommodate a plate width of at least one of the plurality of curved fixation frame plates, and a threaded fastener extending in the threaded hole.

7. The surgical component kit of claim 1, wherein each of the plurality of curved fixation frame plates includes a plurality of threaded openings extending from the convex outer surface into the elongated plate body.

8. The surgical component kit of claim 1, wherein each of the plurality of curved fixation frame plates includes a plurality of threaded openings extending from the concave inner surface into the elongated plate body.

9. The surgical component kit of claim 1, wherein the first radius of curvature is at least 50% greater than the second radius of curvature.

10. The surgical component kit of claim 1, wherein the first radius of curvature is at least 100% greater than the second radius of curvature.

11. The surgical component kit of claim 1, wherein the first radius of curvature is at least 150% greater than the second radius of curvature

12. A surgical component kit for modifying an assembled orthopedic fixation frame assembly attached to a patient, comprising a plurality of curved fixation frame plates, each of the plurality of curved fixation frame plates having an elongated plate body with a top surface, a bottom surface, a concave inner edge and a convex outer edge, the plurality of curved fixation frame plates comprising at least a first curved fixation frame plate having a plurality of indentations formed into the concave inner edge of the elongated plate body and a second curved fixation frame plate having a plurality of openings formed in the elongated plate body extending from the top surface to the bottom surface.

13. The surgical component kit of claim 12, wherein the first curved fixation frame plate has a first radius of curvature and the second curved fixation frame plate has a second radius of curvature, the first radius of curvature being different than the second radius of curvature.

14. The surgical component kit of claim 12, wherein the first curved fixation frame plate has a first radius of curvature and the second curved fixation frame plate has a second radius of curvature, the first radius of curvature being the same as the second radius of curvature.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings and the following description relate to preferred embodiments by way of illustration only. It should be noted that from the following description, alternative embodiments of the components and methods disclosed herein will be readily recognizable as viable alternatives that may be employed in one skilled in the art.

[0020] FIG. 1 depicts one exemplary embodiment of a fixation frame;

[0021] FIG. 2 depicts an alternative embodiment of a fixation frame;

[0022] FIGS. 3A through 3C depict plan, bottom and side views of one exemplary embodiment of a fixation plate;

[0023] FIGS. 4A through 4C depict plan, bottom and side views of another exemplary embodiment of a fixation plate;

[0024] FIGS. 5A and 5B depict one exemplary embodiment of a composite plate structure formed from a first plate and a second plate;

[0025] FIGS. 6A through 6D depict one exemplary embodiment of an adapter plate;

[0026] FIGS. 7A and 7B depict another exemplary embodiment of a composite plate structure formed from a first plate and a second plate

[0027] FIGS. 8A and 8B depict another exemplary embodiment of an adapter plate;

[0028] FIGS. 9A and 9B depict plan and side views of an exemplary embodiment of a straight plate;

[0029] FIGS. 10A and 10B depict plan and side views of another exemplary embodiment of a straight plate;

[0030] FIGS. 11A and 11B depict perspective views of another exemplary embodiment of a fixation frame plate;

[0031] FIGS. 12A through 12E depict various views of an exemplary frame plate, a clamping plate and a threaded rod that form components of a fixation frame;

[0032] FIGS. 13A and 13B depict perspective and cross-sectional views of an exemplary embodiment of a reinforced securement opening in a frame plate;

[0033] FIG. 14 depicts another exemplary embodiment of a reinforced securement opening in a frame plate;

[0034] FIG. 15 depicts a perspective view of another exemplary embodiment of a securement opening in a frame plate;

[0035] FIGS. 16A and 16B depict plan and side views of another exemplary embodiment of a compression plate;

[0036] FIGS. 17A and 17B depict plan and side views of another exemplary embodiment of a compression plate;

[0037] FIG. 18 depicts a perspective view of another exemplary embodiment of a fixation frame;

[0038] FIG. 19 depicts a perspective view of another exemplary embodiment of a fixation frame;

[0039] FIG. 20 depicts the fixation frame of FIG. 18 supporting the weight of an adult male;

[0040] FIGS. 21A through 21D depict various exemplary fixation frame constructs that can be created using various components described herein;

[0041] FIGS. 22A through 22C depict one exemplary method of constructing a fixation frame;

[0042] FIGS. 23A and 23B depict opposing lateral and medial sides, respectively, of an exemplary non-symmetrical fixation frame;

[0043] FIGS. 24A through 24C depict an exemplary embodiment of a variable angle rod connector;

[0044] FIG. 25 depicts a prior art fixation frame construct utilizing circular fixation plates;

[0045] FIGS. 26A and 26B depict exemplary embodiments of partial plate sections or “rescue ring” kits;

[0046] FIGS. 27A through 27C depict various views of one exemplary embodiment of a rescue ring component;

[0047] FIGS. 28A through 28C depict various views of another exemplary embodiment of a rescue ring component

[0048] FIG. 29 depicts and exploded view of one exemplary embodiment of a connecting mechanism; and

[0049] FIG. 30 depicts an assembled external fixation ring construct with rescue rings attached thereto.

DETAILED DESCRIPTION OF THE INVENTION

[0050] The disclosures of the various embodiments described herein are provided with sufficient specificity to meet statutory requirements, but these descriptions are not necessarily intended to limit the scope of the claims. The claimed subject matter may be embodied in a wide variety of other ways, may include different steps or elements, and may be used in conjunction with other technologies, including past, present and/or future developments. The descriptions provided herein should not be interpreted as implying any particular order or arrangement among or between various steps or elements except when the order of individual steps or arrangement of elements is explicitly described.

[0051] Orthopedic fixation systems as described herein generally include frame structures that surround and/or extend along one or more bones to allow for stabilization of a fracture and/or reconstruction of bones and/or surrounding tissue. The systems of the present invention can include a variety of components that can be selected for a desired level of stabilization. Systems of the present invention can include at least two main components: one or more support plates and interlocking spacer and support rods. As indicated herein, a support plate will generally extend around a region of the targeted anatomy, often extending transverse and/or angled relative to the anatomy, while the spacer and support rods typically extend parallel or along the anatomy. In various embodiments, bone-interface components (fixation pins, for example) that can assist in stabilizing a bone (e.g., tibia, fibula, femur or humerus), can be attached to the plates and/or rods in a variety of ways. As part of the embodiments disclosed herein, various frame components are disclosed, including plates, rings, struts, rails, and/or braces, as well as bone-interface components such as various types of orthopedic pins, rods, screws, shafts, wires, and the like that can connect to a bone, e.g., between a frame component and the patient's bone/fragment for positioning or reduction as described. Bone-interface components are commonly coupled to frame ring structures and can be coupled to various frame components, including plates, rings, struts, rails, arms, etc. The various frame components, for example, can be used by a healthcare provider to assemble the systems in a fashion to allow for varied levels of stabilization.

[0052] For use, the systems of the present invention can be generally used for medical procedures that involve fixation and/or reduction of a patient's bone, including limb stabilization. The orthopedic fixation systems of the present invention can be applied to treat various bones or fractures, including bones/fractures of both upper and/or lower limbs, such as a bone in the leg or the arm. A leg bone can include a femur, a tibia, a fibula, or a combination thereof. An arm bone can include a humerus, a radius, an ulna, or a combination thereof. In some embodiments, a segment of a bone can be treated using a device of the present invention. In certain embodiments, the orthopedic fixation systems of the present invention can also serve as reduction devices for a fractured or dislocated bone. For example, the systems can be configured to provide open or closed reduction. For open reduction, bone fragments are exposed surgically to assist in restoring a fracture or dislocation. Closed reduction can manipulate the bone fragments without surgical exposure.

[0053] In certain notable aspects, the various components and relationships therebetween can allow for increased portability and flexibility for stabilizing a bone, for example, in an outpatient setting and/or at the scene of an accident or other environments in which the ability to quickly assembly and/or easily modify the frame design can be particularly useful. The systems described herein can also provide a greater versatility in use because the systems can be assembled and/or modified to allow for different levels of stabilization of the bone. For example, in some situations, healthcare providers may desire more adjustable systems for mobility that can later be modified to increase stability upon arrival to a location that allows for such modifications, such as where an initial portability may be desired to keep the bone stabile before and/or during surgery in an operating room. As described herein, the disclosed embodiments can be assembled to include frame components that may allow for fixation or reduction of a bone in situations that involve more temporary, mobile stabilization or other situations that desirably provide greater stability that may be desired for some operating room situations, including components that may allow the fixation frame to be secured to a bed, a surgical table and/or some other support.

[0054] As described herein, the disclosed systems can include a multitude of frame components, such as plates (also commonly referred to as “rings”) and spacer/support rods. The plates can be of any size and/or shape suitable for use with the systems, devices, and methods of the present invention. The plates can include full plates and/or partial plates, such as half or three-quarter plates, straight and/or curved sections or portions thereof, and/or angular C or U-shaped plates (as well as curved equivalents thereof, if desired). Various plates will desirably further include a variety of mechanisms for mounting the spacer/support rods and/or other bone-interface components. For example, plates can include holes (including internally threaded holes and/or hole portions) ribs, indentations, depressions, protrusions and/or other features that can be coupled with spacer/support rods and/or additional mounting components, such as brackets or other structures that allow for coupling with connectors to interface with bone. In certain embodiments, the plates can be removably and/or slidably coupled to allow removal and/or horizontal displacement of the plates in relation to a bone and/or other portions of the frame structures without greatly affecting the strength and/or support to the bone provide by the remaining frame elements. Once in a desired position, the plate and/or other frame components can be tightened and/or resecured to other frame elements in a desired new position and/or orientation.

[0055] In various embodiments, the spacer/support rods or struts used in the present invention may have any suitable dimension of size or shape to, for example, provide for stabilization and/or mounting of various bone-interface components or other frame components. Rods or struts can be elongate and substantially linear in shape or a whole or part of the rod/strut can be bent (e.g., angular and/or curved). In some embodiments, a strut can be a member of a set of struts, in which each strut can be the same size/shape or of different sizes/shapes. The set of struts can include struts of the same and/or different diameter, the same and/or different maximum (and/or minimum) length, and/or the same and/or different angular adjustability. Distinct struts, of the same or different size/adjustability, can be marked as distinct. For example, the struts and/or ring components may include indicia, such as alphanumeric characters, distinct colors, removable (or permanent) colored bands, etc. In some embodiments, the indicia can be used by a healthcare professional to choose specific struts/ring components having a desired shape and/or stiffness for a particular stabilization procedure. In certain embodiments, struts can also include one or more movable joints that can, e.g., permit relative (internal) translational or pivotal motion of portions the strut. In some embodiments, the joint can allow a twisting motion about an axis parallel to a long axis defined by the strut. In addition, a joint can also permit a bending motion(s) about an axis (or axes) transverse to the long axis of the strut. The joint may be a hinge joint, a ball-and-socket joint, and/or a combination thereof, among others.

[0056] In various disclosed embodiments, at least some of the rods, rings and/or struts can be secured to plates and/or other fixation frame components using the clamping or connecting devices described in U.S. patent application Ser. No. 17/685,086 filed Mar. 2, 2022 and entitled “Connection Device,” the disclosure of which is hereby incorporated by reference herein in its entirety (see also FIG. 29). For example, a strut can be fastened at several points along a set of plates. Alternatively, one strut can be coupled at one end to one plate and at another other end to a second plate. The locations and orientations of the struts in relation to plates, or other components, can be dependent on the particular application of the struts for stabilizing the bone in an orthopedic fixation system of the present invention.

[0057] The rods and/or struts can be secured by any suitable mechanism to plates and/or other fixation frame components of the present invention. For example, a strut can be fastened at several points along a set of plates. Alternatively, one strut can be coupled at one end to one plate and at the other end to a second plate. The locations and orientations of the struts in relation to plates, or other components, can be dependent on the particular application of the struts for stabilizing the bone in an orthopedic fixation system of the present invention.

[0058] If desired, additional support components, such as rescue rings and/or bracing components, can be coupled to the various fixation frame components so as to increase or decrease the stabilization level of the orthopedic fixation systems. In certain embodiments, such bracing components can provide additional stabilization support as well as to provide adjustment capability for a user. Suitable brace components can include partial rings, rod supports, hinges, adjustment handles, joints, etc. The braces can have a configuration that can be adjusted in a variety of ways, such as in length, angle, height, etc. In some embodiments, the braces can include at least one joint or hinge to permit internal relative motion among various components of the brace. Other components, such as adjustment handles, can be configured to allow a healthcare provider to adjust the size and/or shape of the brace as well as the way the brace can couple with other system components.

[0059] In addition to the frame components, the present invention can include bone-interface components that can be connected to a bone. Suitable bone-interface components can include fixation pins, wires, screws, nails, plates, rods, bolts, staples, hooks, clamps, and the like, and/or various combinations thereof. The bone-interface components can extend into bone, through bone, and/or around bone, etc. Furthermore, the bone-interface components can be slidably engaged with bone and/or fixed in relation to bone (e.g., threaded into bone). In some embodiments, the bone-interface components can extend from a frame component, e.g., a plate or rod, to bone, or from a frame component to bone and then back to the same frame component. In other embodiments, a bone-interface component can extend from a frame component to bone and then to a different frame component. Each frame component can be connected to bone via the same or different type of mechanism.

[0060] In general, the frame components and/or bone-interface components can be coupled (e.g., permanently or removably coupled) to other components through a variety of ways. The coupling mechanisms for the systems of the present invention can generally include coupling mechanisms, such as fasteners, screws, nuts, brackets, and/or bolts, as well as other ways to attach various components, such as welding, gluing, tying, etc. In addition, plates can be removably and slidably coupled to various frame components. Fixing pins and/or wires can be independently and/or removably coupled to the plates and/or rods. Alternatively, the fixing pins and/or wires can be independently and/or removably coupled to other components that are coupled to the plates and/or rods. Coupling additional components to various parts of the assembly can depend on several factors, such as the bone needed fixation and/or reduction or, e.g., the placement of a fracture in the bone.

[0061] FIG. 1 depicts a fixation frame 10 that can include a plurality of elongated U-shaped plates 20 having substantially straight legs, the plates 20 attached to ends of a plurality of threaded rods 30. The rod ends are desirably secured by clamping plates 40 which are connected to threaded holes 50 which extend transversely through the walls of the plates 20, which in this embodiment are secured using threaded bolts or screws 60. In this embodiment the plate 20 and the clamping plates 40 can optionally include threaded walls which engage with and secure the threads of the rods 30, although in other embodiments the plate and the clamping plates could include compression or frictional engagement mechanisms to desirably secure the rods to the plates. A series of openings or holes 70 are also shown, which can be of the same of differing sizes and can be utilized to accommodate rods or other frame components, if desired.

[0062] In various embodiments, the plates 20 can include full plates and/or partial plates, such as straight plates, angle or half plates and/or three-quarter plates, as well as U-shaped plates (including straight and/or curved plates and/or portions thereof. The plates 20 will desirably include a variety of vertical and transverse holes for coupling additional components to the plates. Each plate can desirably be removably and/or slidably coupled to adjacent frame structures with one or more rods or struts that can, for example, be configured to provide load-bearing support. A plate can be attached to a strut with a fastening member, or the rod can include features (i.e., external threads) that can engage with internal structures (i.e., internal threading) in some or all of the holes or depressions. The struts could similarly be further coupled together by various fixation components or coupling members (i.e. trusses) which can, e.g., increase the stability of the device.

[0063] FIG. 2 depicts another exemplary embodiment of a fixation frame 110 which includes many similar components as the frame of FIG. 1, but in which the clamping plates 140 are secured to the plates 120 using a threaded bolt 160 and corresponding internal nut 165. Such an arrangement may increase a holding strength of the clamp plate 140, but the presence of the internal nut 165 may be undesirable in some manner where it may rub against patient anatomy and/or interfere with additional components that may be positioned on the frame.

[0064] FIGS. 3A through 3C depict plan, bottom and side views of an exemplary fixation plate 300. In this embodiment, the plate 300 includes a top surface and a bottom surface, with a series of holes or opening 310 extending therethrough. If desired, some or all of the openings 310 may be internally threaded and/or of non-circular shape. The openings 310 may be cylindrical or conical or frustoconical or other cross-sectional shapes as desired. The openings 310 may be of the same or different sizes. The fixation plate will desirably also include a plurality of transverse openings 320 which extend through the side walls of the plate 300, some or all of which may be internally threaded or smooth, of non-circular or circular shape, or cylindrical or conical or frustoconical or other cross-sectional shapes, and may be of the same or different sizes—or various combinations thereof.

[0065] In use, the plate 300 desirably will be provided in a fixation frame kit containing a variety of different sized and/or shaped plates and other frame components. In use, the plate 300 can be desirably positioned around a limb or extremity (or other anatomy), with an open end 340 of the plate advanced over a treated limb (not shown), with the limb ultimately positioned within the recess 350 of the plate.

[0066] FIGS. 4A through 4C depict plan, bottom and side views of another exemplary fixation plate 400, this plate 400 being of a different shape and/or size to the plate 300 of FIGS. 3A through 3C, but with many similar features including openings formed therethrough.

[0067] FIG. 5A depicts a composite plate structure 500 formed from a first plate 510 and a second plate 520, which are connected by a pair of adapter plates 530. In this embodiment, an upper section of a fixation frame (not shown) can be constructed using larger plates, while a lower second section of the fixation frame (not shown) can be constructed using smaller plates, with the composite plate structure 500 connecting the upper and lower sections together. Of course, in alternative embodiments some or all of the openings in the plates could be angled or tapered, and/or the connecting struts or rods could be curved, bent and/or otherwise deformed to accommodate the patient anatomy.

[0068] FIGS. 6A through 6D depict one exemplary embodiment of an adapter plate 600, which includes a flat plate body 610 with a pair of upwardly extending arms 620 and a pair of downwardly extending arms 630. If desired some or all of the arms 620 and 630 may be threaded or smooth, or any combinations thereof.

[0069] FIGS. 7A and 7B depict plan and side views of another alternative embodiment of a composite plate structure 700 formed from a first plate 710 and a second plate 720, with another embodiment of an adapter plate 800 connecting the first and second plates together. As best seen in FIGS. 8A and 8B, the adapter plate 800 can comprise a central body 810, which in this embodiment is formed in an x-shape (although other shapes can be used alternatively). An upwardly extending arm 820 and a downwardly extending arm 830 are also shown extending from the body, and these arms 820 and 830 can be threaded or smooth. In use, the arms of the adapter plate 800 can extend into and through the holes in the first and second plates, and a nut or other securement device can be attached to the arms, if desired, securing the plates together.

[0070] FIGS. 9A and 9B depict plan and side views of another embodiment of a plate 900, which is depicted as a straight plate. In a manner similar to the plates previously described, some or all of the openings through the plate may be internally threaded, or of non-circular shape. The openings may be cylindrical or conical or frustoconical or other cross-sectional shapes as desired. The openings may be of the same or different sizes. The fixation plate will desirably also include a plurality of transverse openings which extend through the side walls of the plate, some or all of which may be internally threaded or smooth, of non-circular or circular shape, or cylindrical or conical or frustoconical or other cross-sectional shapes, and may be of the same or different sizes—or various combinations thereof.

[0071] FIGS. 10A and 10B depict plan and side views of another embodiment of a plate 1000, which is depicted as a straight plate. In a manner similar to the plates previously described, some or all of the openings through the plate may be internally threaded, or of non-circular shape. The openings may be cylindrical or conical or frustoconical or other cross-sectional shapes as desired. The openings may be of the same or different sizes. The fixation plate will desirably also include a plurality of transverse openings which extend through the side walls of the plate, some or all of which may be internally threaded or smooth, of non-circular or circular shape, or cylindrical or conical or frustoconical or other cross-sectional shapes, and may be of the same or different sizes—or various combinations thereof.

[0072] FIGS. 11A and 11B depict perspective views of another exemplary embodiment of a fixation frame plate 1100, which includes many similar features to the plates previously described, including where some or all of the openings through the plate may be internally threaded, or of non-circular shape. The openings may be cylindrical or conical or frustoconical or other cross-sectional shapes as desired. The openings may be of the same or different sizes. The fixation plate will desirably also include a plurality of transverse openings which extend through the side walls of the plate, some or all of which may be internally threaded or smooth, of non-circular or circular shape, or cylindrical or conical or frustoconical or other cross-sectional shapes, and may be of the same or different sizes—or various combinations thereof. In this embodiment, the plate 1100 includes a series of side holes or depressions 1110 which are internally threaded. Desirably, these threads could engage with an externally threaded rod and clamping plate (such as shown in FIG. 1 and FIG. 2).

[0073] FIGS. 12A through 12E depict various views of an exemplary frame plate 1200, clamping plate 1210 and threaded rod 1220 that form components of a fixation frame. In this embodiment, the threaded rod 1220 can desirably be slid laterally into the threaded depression 1230 in the frame plate 1200, and then the clamping plate 1210 can be placed over the rod 1220, and then fixation bolts 1240 can be inserted into corresponding thread plate holes 1250 and tightened, resulting in the construction of FIGS. 12D and 12E. If a physician desires to subsequently move the plate for some reason, it is not necessary to rotate the rod or remove other section (not shown) of the fixation construct—the physician need merely loosed the fixation bolts and the clamping plate can be removed and the rod freed from engagement with the threaded teeth of the plate 1200. Similarly, once a new positioned has been attained, the clamping plate can be retightened and the threaded rod locked in the new desired position without requiring adjustment of any other frame components.

[0074] FIGS. 13A and 13B depict perspective and cross-sectional views of an exemplary embodiment of a reinforced securement opening in a frame plate 1300. In this embodiment, a locally thickened section 1310 of the plate 1300 can be provided, with an internally threaded portion, which can desirably provide additional threaded engagement with a threaded rod or strut—dramatically increasing the “pull out” and “push through” strengths of the coupling (i.e., with the increased number of engaging threads) as well as potentially stiffening the rod relative to the plate (i.e., reducing the potential for the rod to “toggle” relative to the fixation plate). FIG. 14 depicts another exemplary embodiment of a reinforced securement opening in a frame plate 1400, which in this embodiment includes both an upward extending thickened portion 1410 and a downwardly extending thickened portion 1420, with respective internal threading provided therein. This embodiment can further increase the “pull out” and “push through” strengths of the coupling (i.e., with the increased number of engaging threads) as well as potentially stiffening the rod relative to the plate (i.e., reducing the potential for the rod to “toggle” relative to the fixation plate).

[0075] FIG. 15 depicts a perspective view of an exemplary embodiment of a securement opening 1510 in a frame plate 1500 which allows for some malalignment or “toggle” between a fixation rod (not shown) and the plate 1500 when a compression plate (not shown), optionally having complimentary design features, is secured to the plate 1500. In this embodiment, an upper end 1520 of the opening and a lower end 1530 of the opening are enlarged relative to the rod, which can allow the rod to angle somewhat relative to the plate (i.e., be not perpendicular to the plate)—up to 10 or 15 degrees in some embodiments. While a threaded central portion 1540 of the opening is depicted, alternative embodiments could include smooth or roughened wall surfaces to allow rod retention using friction or compression forces, if desired.

[0076] FIGS. 16A and 16B depict plan and side views of another exemplary embodiment of a compression plate 1600. In this embodiment, a depression or semi-circular opening 1620 can be provided to engage with a rod (not shown). If desired, the opening 1620 can have a smaller diameter than the rod to improve the “bite” or engagement with the rod (which could similarly include an opening in the fixation plate which is smaller than the rod, if desired). In alternative embodiments, the central threaded opening could comprise a roughened or textured surface which engages frictionally with a rod. FIGS. 17A and 17B depict plan and side views of still another exemplary embodiment of a compression plate 1700 In this embodiment, the plate 1700 includes a base body 1710 and an upwardly extending support arm 1720, which can desirably engage with a rod or other structure to impart additional rigidity and/or stability to the coupling, potentially increasing the strength and/or rigidity of the full frame construct in a desired manner.

[0077] FIG. 18 depicts a perspective view of another exemplary embodiment of a fixation frame 1800, which includes many similar components as the frames of FIG. 1 and FIG. 2. In this embodiment, a pair of U-shaped plates 1810 are secured together by struts 1820 and various additional components, along with a pair of straight plates 1830. In addition, the open end of each of the U-shaped plates 1810 is secured closed by a straight plate 1850. Such a construct is extremely strong and rigid, and also requires a minimal number of component parts, rendering the construct relatively lightweight and inexpensive as compared to traditional frame designs.

[0078] FIG. 19 depicts a perspective view of another exemplary embodiment of a fixation frame 1900, which includes many similar components as the frame of FIG. 18. In this embodiment, a curved plate 1910 is positioned at an end of a U-shaped plate 1930, with additional struts 1940 and plates extending outward from an opposing side of the U-shaped plate 1930.

[0079] FIG. 20 depicts the fixation frame of FIG. 18 supporting the weight of a fully grown adult male 2000, which has been adapted from an actual photograph of the same. This image aptly demonstrates the extreme strength and rigidity of the disclosed fixation frame—even where a minimal number of components is provided.

[0080] FIGS. 21A through 21D depict various exemplary fixation frame constructs that can be created using the various components and teachings described herein. FIG. 21A depicts a side view of an exemplary fixation frame 2100 that can be utilized on a patient. If a frame component obstructs a portion of the extremity or other anatomical feature in an undesired manner, the physician can loosen one or more individual components of the frame 2100, and reposition that component (i.e., a rod or strut 2110, as shown in FIG. 21B) to a new location (see phantom rod and arrows depicting movement of the component), where the component can be retightened in the new location without compromising the fixation or strength of the frame during such manipulation—thereby allowing the physician to access the wound for treatment, even allowing the placement of a negative pressure wound therapy device (i.e., “wound vac”), if desired. Similarly, if fixation pins 2130 or other bony attachment points (or frame components) require manipulation or repositioning from the positions shown in FIG. 21C, the frame members and/or fixation pins can be moved in a similar manner (see FIG. 21D) without affecting other fixation provided by the frame during such movement. In this way, portions of the frame and/or other support structures can be modified without comprising or affecting the support and fixation concurrently provided by the remainder of the frame, thereby allowing unfettered access virtually all of the patient's anatomy in a desired manner.

[0081] FIGS. 22A through 22C depict one exemplary method of constructing a fixation frame in accordance with various teaching of the present invention. As best seen in FIG. 22A, a two-level frame can be initially constructed and then placed around a patient's extremity (not shown). FIG. 22B depicts the frame with additional levels that can be added to the central support struts or other members of the existing frame as desired. FIG. 22C depicts the frame with an additional offset upper level secured above the existing frame members—the frame can continue to be modified as desired by the physician.

[0082] If desired, and depending upon anatomical considerations and/or physician preference, the opposing sides of a fixation frame may be symmetrical and/or non-symmetrical. For example, the side views of a frame may be substantially mirror images, or the side views can be different, such as depicted in FIG. 23A (a lateral view of a frame embodiment) and FIG. 23B (a medial view of the same frame embodiment). In this way, the frame can be particularized as necessary and/or desired.

[0083] FIG. 24A depicts one alternative embodiment of a variable angle rod connector 2400 which fits within a corresponding recess in a swivel rod locking mechanism 2410 (see FIG. 24B) which includes a lower rod 2420, a cylindrical body 2430 and a locking compression cap 2440. In use, the swivel rod connector can facilitate off-axis attachment of a rod or strut in a fixation frame construct, such as depicted in FIG. 24C.

[0084] FIG. 25 depicts a prior art frame construct utilizing circular fixation plates, which arrangements may similarly benefit from one or more of the components and/or modifications described herein. In many commercially available external fixation devices, the support rings may have diameters of 150 mm, 180 mm, 200 mm and 240 mm, which are standard sizes of existing rings in clinical use, with a typical standard radial thickness of 12 mm and an axial thickness of 5 mm. Such rings may be utilized with standard size half and full pins, where the pins may have common diameters of 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm and 6.5 mm, or others. Struts or connecting rods can be virtually any diameter, although rods of 10 mm diameters are common. Mechanically, the smallest diameter ring that will fit the extremity is commonly recommended, although a ring that fits too closely may cause compression and skin ulceration of the extremity that becomes edematous. One commonly accepted guideline is that a physician should allow for a minimum of 2 cm of space between the skin and the ring circumferentially. In some instances, different diameter rings may be used in the same frame to conform to the limb contours and optimize stability. This is often seen with knee fusion frames where smaller rings are used around the leg and larger rings are needed to accommodate the thigh. Ring widths and heights also vary with the wider and thicker rings being less likely to deflect or bend during loading.

[0085] In many instances, the position that a bone occupies within a given ring or frame does not appear to generally affect stability. Although some physicians prefer to centralize a bone within a ring to enhance stability, others have found that eccentric positioning of the bone in the ring, as occurs around the proximal tibia, typically has no adverse effect on ring stability and in fact may increase stiffness of the construct. However, the distance between the rings and the type of ring connectors used will also affect stability. Rings that are far apart connected with long rods typically experience more motion between them. If desired, a rescue ring may be placed in a mid-location of longer support rods to effectively “shorten” the rods and increase the stability of the frame for a variety of conditions (see FIG. 30). Similarly, rescue rings may be utilized with telescopic rod frames to span longer distances and/or preserve frame stability during frame manipulation and/or elongation/shortening.

[0086] While many of the embodiments described herein are shown in conjunction with more squared and/or rectangular (i.e., more angular) designs for fixation plates and/or other components, it should be understood that virtually any polygonal shape (and/or curved, oval and/or circular shapes) as well as combinations thereof could be useful for the various plates and/or other components, including triangular, pentagonal, hexagonal, septagonal, octagonal and/or rounded shapes, if desired. In some embodiments, various shaped plates and/or system components may be easier to upsize and/or accommodate a variety of modular components, and may also be less expensive to manufacture. Moreover, the use of flat, angular and/or squared components may significantly reduce a required diameter of the fixation frame and/or allow the fixation frame to lay flat upon the one or more sides, which may be much more comfortable for the physician and/or wearer under certain circumstances. In addition, there may be more room underneath a particular component shape and/or size between the frame and skin surface to accomplish dressing changes, as well as more space to modify dressings and/or add to dressings, as well as accommodate other items and/or equipment. This may be particularly useful for patient with obese legs or large calves, wherein the physician can shift the frame posterior. Moreover, various frame designs may facilitate the use of offset rods and/or rod connectors, whereas offset of other systems might tilt the components of in an unwanted manner.

[0087] FIGS. 26A and 26B depicts exemplary embodiments of partial plate sections or “rescue ring” kits constructed in accordance with various teachings of the present invention. In various embodiments, a series of individual partial plate sections of various sizes, shapes and/or configurations can be provided to facilitate a physician's ability to augment and/or modify a fixation frame in a desired manner. For example, it may be desirous to connect two or more support rods while “skipping” a third support rod for some reason, such as where the third support rod is to be removed from the construct and/or otherwise moved or manipulated. In such a case, an appropriate “rescue ring” section may be selected which can connect the first and second support rods together without passing through or against the third rod (and also desirably avoid the supported patient anatomy). Subsequently, the third rod can be removed and/or otherwise manipulated while the rescue ring provides auxiliary support to the frame construct. As best seen in FIG. 26B, the various rings sections in a kit can comprise multiple ring sections of various lengths, with some the ring sections having similar radii of curvatures 2610, as well as other ring sections of similar sizes having different radii of curvatures 2620. Still other ring sections can have a similar size and/or curvature, but differ in some aspect of construction and/or attachment modalities 2630.

[0088] In at least one exemplary embodiment, a kit of rescue rings could include a first ring having a radius of curvature of 12 cm while a second ring has a radius of curvature of 7.5 mm, with various other rings of other radii of curvature therebetween. In some embodiments, the radius of curvature of a first ring may represent an increase of 50% (or greater), 100% (or greater) or even 150% or greater than the radius of curvature of a second ring in the same kit.

[0089] In various embodiment, partial ring sections are disclosed that desirably allow attachment to an already assembled external fixation ring construct without having to move or remove already present rings and/or struts (see FIG. 30). This attachment can provide for increased rigidity/stability of the construct, provide additional “points” to add ring accessories (i.e., half pin, skinny wire, etc.), provide additional protection for underlying extremity locations in case the limb part is too exposed by the frame, and/or the section(s) can be applied during a case and/or removed in a physician's office to allow for access to a surgical site, wound, flap, etc.

[0090] FIGS. 27A through 27C depict various views of one exemplary embodiment of a rescue ring section 2700, which includes a curved or actuate elongated body 2710 with a plurality of openings 2720 provided therein. FIGS. 28A through 28C depict various views of another exemplary embodiment of a rescue ring section 2800, which includes a curved or actuate elongated body 2810 with a plurality of openings 2820 provided, along with inward facing slots 2830.

[0091] It should be understood that the disclosed rescue rings could incorporate a variety of holes, slots, depressions and/or openings in the main body structure, similar to those described in prior frame component structures herein, as desired by the physician and/or manufacturer. In the embodiment of FIGS. 28A through 28C, slots 2830 in the inner wall structure of the rescue ring 2800 can facilitate the application of the rescue ring from an exterior portion of the construct (or from the interior of the construct if the rescue ring is inverted for some reason), at the surgeon's option. In some embodiments, the slots could extend over rods of the frame. In other embodiments, the rescue ring may have an interior 50% of the holes cut away to allow the ring to be applied to the construct. Conversely, the ring may have exterior holes positioned on an outer portion thereof to allow it to be attached to the construct.

[0092] In various embodiments, a physician may elect to increase the strength and/or rigidity of a given construct of the construct by adding one or more rescue ring sections to the construct. The rescue ring can be attached to the external fixation frame using a wide variety of connecting mechanisms, including via clamps, nuts, loops, zip ties, or tools such as a hook nut (see FIG. 29). If desired, rescue rings could be provided in a variety of thicknesses and/or materials, depending upon physician need.

[0093] In addition, the incorporation of the discloses rescue rings with partial plate sections may allow the use of a wide variety of clamp designs and/or other components to assemble the fixation frame—including the use of components of different sizes and/or shapes in a single construct. Various different clamp designs could be utilized on a single level and/or frame member, which can allow for many different ways to bolt or otherwise connect different size components together, which is not easily accomplished with many existing fixation systems.

[0094] The various frame components disclosed herein can allow for open ends of the rescue ring plate to be positioned pointed forward, to either side or backward, as desired, with the openings and/or other plate features being easy to secure to an existing construct to desirably increase stability of the construct. In addition, with the disclosed designs a caregiver can attach one or more rescue rings to the construct and then alter other plate components as desired, such as to slide the plates forward or rearward (i.e., cephalad or caudad along a lower limb) to desirably accommodate leg size, dressings and/or other fixation equipment. In addition, partial plate sections such as rescue rings can be useful to accommodate components that may be offset relative to a central longitudinal axis of the frame.

[0095] If desired, the disclosed frame designs can optionally accommodate curved components such as c-shaped and/or u-shaped plates as a main level component, with opposing flat and/or C/U-shaped components to optionally close off the “box” on each level. In fact, various designs could incorporate rounded and/or curved sections, including rounded frame members (i.e., to create D-shaped frame members, for example) and/or curved support rods between frame sections. In a similar manner, the various components described herein could potentially accommodate and/or attach to components from other fixation systems, including rounded, squared and/or other shaped systems, if desired.

[0096] The various fixation frame components, including partial ring components, can allow a physician to change rod locations in office and/or much easier to add levels in the office or in surgery on a frame already on a patient. Moreover, the disclosed embodiments are faster to assemble and disassemble than existing designs, allow faster dressing changes, and these design also require significantly fewer parts.

[0097] In addition to easy of assembly, the disclosed frame designs desirably include a variety of features to allow frame components to be added and/or removed from the frame with little disruption to adjacent frame members. For example, current frame designs typically include rods and numerous nuts on inside surfaces of frame, with nuts on the ends of rods. In order to disassembly and/or modify these frame components, a surgeon or physician must unscrew all the nuts at both the top and bottom of a rod before rod removal can be accomplished. Moreover, if a nut or other component goes missing, it may be necessary to rebuild the entire frame to accommodate the missing components, and it is typically difficult to add frame sections in an out-patient environment.

[0098] The presently disclosed embodiments will desirably obviate the need for multiple assistants during frame placement and/or assembly. During a current surgical procedure, a surgeon will often utilize an assistant or folded and stacked towels, etc., to hold the patient's leg in a desired position and/or orientation within the frame to facilitate assembly. However, with the currently disclosed designs, the physician can optionally utilize removable supports, rescue rings and/or other features that can be utilized to preassemble frame sections and/or be attached to frame sections that can also be removed at the end of frame assembly. The current design also allows a physician to use one of more openings to guide pin placement and/or drill placement into patient anatomy (i.e., drill or obdurate through hole in frame). Moreover, the disclose designs incorporate a much higher number and distribution/orientation of pin positions than provided by current frame designs, which allows a physician to move rods and/or other components to allow pin positions and/or other anatomical features to be exposed in a desired manner.

[0099] One or more structures as described herein may be provided in the form of a kit. A kit may be assembled for portability, facilitating use in a surgical setting, and the like. A kit can typically include various components of an orthopedic fixation system of the present invention, and the orthopedic fixation system may be provided in a fully assembled, partially assembled, or non-assembled configuration. As indicated, a device of the present invention may be configured or of a designed such that one or more components of the fracture reduction system have a limited or single use, or are replaceable. A kit may include pre-sterilized components or device(s), as well as sterilized packaging. The components of the present invention may be sterilized (and will generally be sterilizable) by any of the well-known sterilization techniques, depending on the type of material. Suitable sterilization techniques include heat sterilization, radiation sterilization, chemical/gas sterilization, and the like.

[0100] In one exemplary embodiment, such as shown in FIGS. 26A and 26B, a series of rescue ring sections of various sizes, shapes and/or arcuate angles can be provided in a single kit.

[0101] In yet other embodiments, the present invention provides methods of using the devices and assemblies described herein. In an exemplary embodiment, the present invention provides a method of using an orthopedic fixation system can include modifying the fixation device in an outpatient or transportation setting while the patient's bone is immobilized with the fixation device.

[0102] Structures, devices, and assemblies of the present invention should not be limited to any particular construction materials or compositions. Materials and compositions of the invention can include any variety of metals, alloys, polymers, and the like, alone or in combination, that are commonly used or generally suitable for use in medical or surgical applications. Devices and components thereof may be made from conventional non-absorbable, biocompatible materials including stainless steel, titanium, alloys thereof, polymers, composites and the like and equivalents thereof. The use of lighter materials such as high strength metals, plastics and/or ceramics will desirably allow a square frame to have equivalent and/or lighter weight than a corresponding rounded frame and its components.

[0103] The specific dimensions of any of the orthopedic fixation systems, assemblies, and components thereof, of the present invention can be readily varied depending upon the intended application, as will be apparent to those of skill in the art in view of the disclosure herein. Moreover, it is understood that the examples and embodiments described herein are for illustrative purposes only and that various modifications or changes in light thereof may be suggested to persons skilled in the art and are included within the spirit and purview of this application and scope of the appended claims. Numerous different combinations of embodiments described herein are possible, and such combinations are considered part of the present invention. In addition, all features discussed in connection with any one embodiment herein can be readily adapted for use in other embodiments herein. The use of different terms or reference numerals for similar features in different embodiments does not necessarily imply differences other than those which may be expressly set forth. Accordingly, the present invention is intended to be described solely by reference to the appended claims, and not limited to the preferred embodiments disclosed herein.

[0104] The entire disclosure of each of the publications, patent documents, and other references referred to herein is incorporated herein by reference in its entirety for all purposes to the same extent as if each individual source were individually denoted as being incorporated by reference.

EQUIVALENTS

[0105] The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing embodiments are therefore to be considered in all respects illustrative rather than limiting on the invention described herein. Scope of the invention is thus intended to include all changes that come within the meaning and range of equivalency of the descriptions provided herein.

GENERAL

[0106] Many of the aspects and advantages of the present invention may be more clearly understood and appreciated by reference to the accompanying drawings. The accompanying drawings are incorporated herein and form a part of the specification, illustrating embodiments of the present invention and together with the description, disclose the principles of the invention.

[0107] Although the foregoing invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, it will be readily apparent to those of ordinary skill in the art in light of the teachings of this invention that certain changes and modifications may be made thereto without departing from the spirit or scope of the disclosure herein.

[0108] The various headings and titles used herein are for the convenience of the reader, and should not be construed to limit or constrain any of the features or disclosures thereunder to a specific embodiment or embodiments. It should be understood that various exemplary embodiments could incorporate numerous combinations of the various advantages and/or features described, all manner of combinations of which are contemplated and expressly incorporated hereunder.

[0109] The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms “having,” “including,” and “containing” are to be construed as open-ended terms (i.e., meaning “including, but not limited to,”) unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., i.e., “such as”) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.