SPINAL STABILIZING AND GUIDING FIXATION SYSTEM
20210378713 · 2021-12-09
Inventors
Cpc classification
A61B17/86
HUMAN NECESSITIES
A61B17/704
HUMAN NECESSITIES
A61B17/7053
HUMAN NECESSITIES
A61B17/7056
HUMAN NECESSITIES
A61B17/7046
HUMAN NECESSITIES
A61B17/846
HUMAN NECESSITIES
A61B17/705
HUMAN NECESSITIES
International classification
A61B17/70
HUMAN NECESSITIES
A61B17/84
HUMAN NECESSITIES
Abstract
A system to stabilize and guide the growth of the spinal column includes an elongated support member having a width and a length and a guiding connector having a bone connecting portion and a guiding portion. The bone connecting portion secures the guiding connector to a vertebrae and the guiding portion has a bearing element with a passageway adapted to receive the elongated support member. The bearing element permits relative sliding movement of the elongated support element in the passageway of the bearing element. The system may further include a bone fixation element has an elongated support member receiving channel, a locking mechanism and a bone anchoring portion. The bone anchoring portion secures the bone fixation element to bone. The locking mechanism secures the elongated support member in the channel. The guiding connector is moveable along the elongated support member to permit and control the growth of the spinal column along a predetermined path.
Claims
1. An implant holder configured to support a guiding connector that is configured to attach to a vertebrae and to be secured to an elongated support member by a cable tie, the implant holder comprising: a handle portion having a proximal end, a distal end spaced from the proximal end along a distal direction, and a shaft that extends between the proximal and distal ends, the distal end configured to be positioned proximate to the guiding connector when the guiding connector is supported by the implant holder; at least one holder defining a channel therethrough that is configured to receive the shaft of the handle portion such that the at least one holder is slidable along the shaft and the at least one holder is configured to secure the cable tie and at least one wing of the guiding connector to the handle portion.
2. The implant holder of claim 1, wherein the at least one holder comprises: a proximal holder defining a channel therethrough that is configured to receive the shaft of the handle portion such that the distal holder is slidable along the shaft, the proximal holder being configured to secure the cable tie to the handle portion; and a distal holder defining a channel therethrough that is configured to receive the shaft of the handle portion such that the distal holder is offset from the proximal holder along the distal direction and slidable along the shaft, the distal holder being configured to secure the cable tie and at least one wing of the guiding connector to the handle portion.
3. The implant holder of claim 1, wherein the proximal end of the handle portion has a stop member, and the at least one holder is configured to slide between the distal end and the stop member.
4. The implant holder of claim 3, wherein the at least one holder is configured to be received over the distal end of the handle portion.
5. The implant holder of claim 1, wherein the at least one holder is configured to secure a platform member of the guiding connector to the handle portion.
6. The implant holder of claim 1, wherein the at least one holder is configured to secure the cable tie and the at least one wing to the handle portion such that the cable tie and at least one wing extend along the shaft along a proximal direction, opposite the distal direction.
7. The implant holder of claim 1, wherein the channel of the at least one holder is configured to receive ends of the cable tie to secure the cable tie to the handle portion.
8. The implant holder of claim 1, wherein the implant holder is configured to support a guiding connector that comprises: a bone connecting portion that is elongate along a central axis and configured to secure the guiding connector to a vertebra; and a guiding portion located proximal to the bone connecting portion, the guiding portion having: a platform member having a first side portion and a second side portion spaced from the first side portion; a first flexible wing that extends from the first side portion of the platform member, the first flexible wing having an end opposite the first side portion of the platform member, an inner surface, and an outer surface opposite the inner surface; and a connecting portion that attaches the platform member to the bone connecting portion, the connecting portion defining at least in part a transverse opening located between the platform member and the connecting portion, the transverse opening configured to receive the cable tie.
9. A system comprising: the implant holder of claim 1; and a driver comprising a sleeve having a proximal sleeve end, and a distal sleeve end spaced from the proximal sleeve end along the distal direction, the sleeve defining a cannulation therethrough that is configured to receive the shaft of the implant holder.
10. The system of claim 9, wherein the driver comprises a torque transmitting interface at the distal sleeve end, the torque transmitting interface configured to cooperate with a structure on the guiding connector to transmit torque to the guiding connector when the guiding connector is supported by the implant holder and the implant holder is received in the sleeve.
11. The system of claim 9, wherein the proximal sleeve end is configured to abut the at least one holder as the shaft of the implant holder is received in the sleeve so as to slide the at least one holder along the shaft in a proximal direction, opposite the distal direction.
12. A method of securing an implant holder onto a guiding connector that is configured to attach to a vertebrae and to be secured to an elongated support member by a cable tie, the method comprising steps of: sliding at least one holder along a shaft of a handle portion along a proximal direction that extends from a distal end of the shaft to a proximal end of the shaft, the shaft being received in a channel that extends through the at least one holder; positioning the distal end of the shaft proximate to the guiding connector; securing the cable tie and at least one wing of the guiding connector to the handle portion by sliding the at least one holder along the shaft along a distal direction, opposite the proximal direction.
13. The method of claim 12, wherein: the at least one holder comprises a proximal holder and a distal holder; the sliding step comprises sliding the proximal and distal holders along the shaft along the proximal direction, the shaft being received in respective channels that extend through the proximal and distal holders; and the securing step comprises sliding the distal holder in the distal direction to secure the cable tie and at least one wing to the handle portion and sliding the proximal holder in the distal direction to secure the cable tie to the handle portion.
14. The method of claim 13, wherein the sliding step comprises sliding the at least one holder in the proximal direction towards a stop member at the proximal end of the proximal end of the shaft.
15. The method of claim 12, comprising, before the sliding step, a step of receiving the distal end of the shaft into the channel of the at least one holder.
16. The method of claim 12, wherein the securing step comprises securing the cable tie and the at least one wing to the handle portion such that the cable tie and at least one wing extend along the shaft along a proximal direction, opposite the distal direction.
17. The method of claim 12, wherein the securing step comprises receiving ends of the cable tie in the channel of the at least one holder to secure the cable tie to the handle portion.
18. The method of claim 12, comprising, after the securing step, a step of receiving the shaft of the handle portion into a sleeve of a driver.
19. The method of claim 18, comprising, after the receiving step, a step of transmitting torque from the driver to the guiding connector.
20. The method of claim 18, wherein the receiving step comprises causing a proximal end of the sleeve to abut the at least one holder and to slide the at least one holder along the shaft in the proximal direction.
Description
DETAILED DESCRIPTION OF THE DRAWINGS
[0015] The foregoing summary, as well as the following detailed description of the preferred embodiments of the application, will be better understood when read in conjunction with the appended drawings. For purposes of illustrating the preferred implant system and method of use of the present invention, drawings of the preferred embodiments are shown. It should be understood, however, that the application is not limited to the precise arrangements, structures, features, embodiments, aspects, methods, and instrumentalities shown, and the arrangements, structures, features, embodiments, aspects, methods and instrumentalities shown may be used singularly or in combination with other arrangements, structures, features, embodiments, aspects, methods and instrumentalities. In the drawings:
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DETAILED DESCRIPTION OF THE INVENTION
[0049] Certain terminology is used in the following description for convenience only and is not limiting. The words “right”, “left”, “lower”, “upper”, “below”, “above”, “top”, and “bottom” designate directions in the drawings to which reference is made. The words “inwardly” or “distally” and “outwardly” or “proximally” refer to directions toward and away from, respectively, the geometric center of the spinal stabilizing device, system or the surgeon and are not meant to be limited. The words, “anterior”, “posterior”, “superior”, “inferior” “lateral” and “medial” and related words and/or phrases designate preferred positions and orientations in the human body to which reference is made and are not meant to be limiting. The terminology includes the above-listed words, derivatives thereof and words of similar import.
[0050] Certain preferred embodiments of the invention will now be described with reference to the drawings. In general such embodiments relate to preferred spine stabilization and growth guiding systems including preferred guiding connectors and related instruments by way of non-limiting example for use in the treatment of the spine.
[0051] Referring to
[0052] The spinal stabilization system 100 may include (1) one or more elongated support elements 9, such as, for example, longitudinal spinal rods 10, (2) one or more standard vertebral fixation devices 15 for securely connecting a vertebra to the elongated support elements, such as, for example, pedicle screws (monoaxial, monorotational, polyaxial screws), lamina and pedicle hooks (monoaxial, monorotational, and/or polyaxial hooks), or other bone anchors which may be firmly secured to one or more vertebrae preferably to act as anchor points, (3) one or more guiding connectors for anchoring in vertebra and for guiding and controlling the movement of the vertebrae along the elongated support elements 9 so that the vertebra of the spinal column 7 may move along a growth path to permit growth of the spinal column 7 and thorax, (4) one or more lateral connectors for laterally offsetting the guiding connectors from the axis of the spine; and (5) one or more parallel connectors for permitting relative motion of elongated support members.
[0053] It should be understood that the elongated support element 9 is typically a spinal rod 10 but that the system is not limited to use with spinal rods and any elongated support member of any shape and configuration is contemplated. The support member 9 may include solid, non-solid, hollow, partially solid, flexible or dynamic spinal rods 10. The spinal rods 10 for use in the stabilization system 100 may be standard spinal rods commonly used in spinal stabilization surgeries, generally of approximately 6 mm in diameter, although it may be preferred for pediatric uses, to which the present system may particularly be adapted and designed, to utilize 5.5 mm spinal rods. Alternatively or additionally, the system may utilize dynamic spinal rods which may permit flexing of the spinal rod 10 implanted within a patient.
[0054] The elongated support members 9, referred to herein interchangeably as spinal rods, are utilized to act as guide rails to direct the growth of the spine. That is, in one preferred embodiment, the surgeon implants the spinal rods so that they are configured to correspond to a desired growth path for a patient. The spinal rods are preferably fixedly secured to one or more vertebrae which act as anchor points. The spinal rod is implanted to correspond to the desired growth path for the spine by supplying or bending the spinal rod to a desired configuration. Guiding connectors are then preferably connected to other vertebrae and are permitted to move and slide along the spinal rods to enable passive growth and lengthening of the spine. The spinal rods act as rails which direct and control the motion of the guiding connectors and thus control the direction of growth of the vertebrae to which they are attached. The fixed anchor points for the stabilizing and guiding system may be located at the ends or in the middle of the construct.
[0055] It will be appreciated that the bone anchors and/or guiding connectors may be connected to the vertebrae by polyaxial, monoaxial, or monorotational screws, hooks, pins, tacks, nails, stakes, blades or other types of bone anchor mechanisms, or clamps. The system may optionally include one or more transconnectors 12 for attaching two parallel spinal rods 10, 10′ implanted in the spinal column 7 of a patient.
[0056] Referring to
[0057] As shown in
[0058] Gliding or guiding connectors 20 are attached to the intermediate vertebrae 3, 4. Guiding connectors 20 preferably permit growth and lengthening of the spine. In particular, the spacing between the adjacent vertebrae can change as the patient grows as the spinal rods 10, 10′, 10″, 10′″ can slide and telescope with respect to the guiding connector 20.
[0059] The guiding connector 20 preferably should be firmly secured to one or more vertebrae so the guiding connectors can slide and glide with respect to the spinal rods as the spinal column grows. Guiding connector 20 preferably includes a bone connecting portion 30 and a rod guiding portion 40. In the embodiment of
[0060] The guiding portion 40 of the guiding screw 35 includes at least one bearing element 50 having one or more passageways. The guiding portion 40 of the embodiment of
[0061] Alternatively, the guiding portion 40 may have two passageways 42, 44 that that extend substantially perpendicular to the longitudinal axis of the shaft 37 but are open at the top portion to form a channel 55, 57 which communicates with the bores 52, 54. The channel 55, 57 enables a surgeon to snap in the spinal rods 10, 10′ from the top of the guiding connector 20 to facilitate ease of assembly of the system 100 (see
[0062] The materials of construction for the guiding portion 40, and specifically the bearing element 50 are preferably chosen to minimize friction and wear between the interior surface 43, 45 forming the passageways 42, 44 and the spinal rods 10, 10′, 10″, 10′″. The material forming the passageways 42, 44 or at least the surface 43, 45 which interacts with and contacts the rods 10, 10′, 10″, 10′″ may be formed from PEEK, or ultra high molecular weight polyethylene (UHMWPE). The rod and/or bone connecting portion 30 may preferably be formed of metals such as, for example, titanium, titanium alloys (Ti-6Al-7Nb), stainless steel, cobalt chromium, Nitinol, etc. The spinal rods and/or interior surface 43, 45 of the passageways 42, 44 may be polished or coated, such as with polytetrafluoroethylene for example, to reduce the coefficient of friction to enhance the gliding and/or sliding characteristics of the spinal rods 20 through the passageways 42, 44.
[0063] The guiding portion 40 may include a housing 65 that at least partially surrounds, and may preferably completely surround the sides of the bearing element 50 preferably to provide support and strength to the bearing element 50. The housing 65 may be connected to the bone connecting portion 35. The housing 65 may be connected to the bone connecting portion 35 in a variety of manners including, but not limited to, bonding, welding, gluing, press fit, threading connection, integral and monolithic, etc. The housing may be formed of a biocompatible metal or metal alloy or other materials. The passageways 42, 44 and the bearing element 50 preferably are fixed with respect to the housing 65 and the bone connecting portion such that the pathway for the spinal rod is not adjustable before, during or after implantation of the guiding connector 20.
[0064] In the stabilization and guiding system 100, the spinal rod 10 can slide within the passageway 42 located in the guided connector 20 implanted in vertebrae 3, and slide through the passageway 42 of the guiding connector 20 implanted in vertebrae 4, as a result of vertebrae 2 moving relative to vertebrae 3 and 4 (or vertebrae 3 moving relative to vertebrae 4). Additionally, the spinal rod 10′ preferably is permitted to move and slide in passageway 44 of the guiding connector 20 implanted in vertebrae 3 and the passageway of guiding connector 20 implanted in vertebrae 4 as a result of vertebrae 2 moving relative to vertebrae 3 and 4 (or vertebrae 3 moving relative to vertebrae 4). The spinal rod 10″ is permitted to move and slide within passageway 44 of the guiding connector 20 implanted in vertebrae 3, and within the passageway 44 of the guiding connector 20 implanted in vertebrae 4 as a result of vertebrae 5 moving relative to vertebrae 3 and 4 (or vertebrae 3 moving relative to vertebrae 4). Additionally, spinal rod 10′″ preferably is permitted to move and slide within passageway 44 of the guiding connector 20 implanted in vertebrae 3 and passageway 44 of the guiding connector 20 implanted in vertebrae 4 as a result of vertebrae 5 moving relative to vertebrae 3 and 4 (or vertebrae 3 moving relative to vertebrae 4). Thus, the system permits the vertebrae, which are connected to the guiding connectors, to move along a path defined by the shape and configuration of the implanted spinal rods.
[0065] The guiding portion 40 is designed and configured to move along the spinal rods which preferably constrain and restrict the movement of the guiding connectors in a particular path and/or direction. Since the guiding connector is attached, preferably firmly attached, to the vertebrae, the growth and movement of the vertebrae and the growth of the spine is permitted, but preferably is constrained and limited to the path permitted and defined by the implanted spinal rods. The spinal rods 10, standard fixation devices 15 (e.g., pedicle screws) and guiding connectors 20 can be configured in the spinal column 7 in various configurations, such as, for example, the configuration of
[0066] While the system 100 has been shown as having fixed bone anchors 15 in two adjacent vertebrae at the ends of the implanted system, the fixed bone anchors 15 can be attached to a single vertebrae using one or more pairs of fixed bone anchors 15, and/or the fixed bone anchors can span one or more vertebrae. In addition, while system 100 in
[0067] Referring to
[0068] Guiding connectors 20 are connected to the first vertebrae 2 and the last vertebrae 5. The guiding connectors 20 are preferably in the form of screws 35, having a guiding portion 40 as shown in
[0069] The system and construct 100′ of
[0070] In another configuration of stabilizing and guiding system 100″ as illustrated in
[0071] Referring to
[0072] The guiding portion 140 preferably comprises platform member 152, one or more bushings 150, a clamp member 160, and a set screw 170. In the embodiment of
[0073] The bushings 153, 154 can be preassembled and connected to the clamp member 160. The clamp member 160 can then be positioned with respect to the platform member 152 and thereafter connected together with the set screw 170. The guiding connector 120 of
[0074] Surgeons often bend spinal rods and create a desired rod shape in order to better fit the patient's spine or create the desired curvature for the patient's spinal column. The adjustability of the bushing 150 with respect to the guiding connector 120 provides increased flexibility. Once the desired orientation and position of the bushing 150 is set, the doctor can tighten the set screw 170 to position the bushing 150 in place on the platform member 152. The guiding connectors 120 can be used in the systems and constructs described in
[0075] Referring to
[0076] The bushing 150′ can be configured and arranged similar to the bushings 150 and may have an exterior surface that preferably is frusto-spherically shaped and able to pivot, rotate and articulate with respect to the sleeve 176. The bushing 150′ also preferably contains a bore 142′ for receiving the spinal rods 10. The spinal rods 10 are configured to slide and glide with respect to the bushing 150′ in-situ. After the angular orientation and position of the bushings 150′ are adjusted, a surgeon can fix the position of the bushing 150′ by tightening the nut 185 on the top of the shaft 137. The post 132 preferably has screw threads to mate with screw threads on the nut 185. After the nut 185 is tightened, the position and orientation of the sleeve connectors 177 and the bushings 150′ is preferably fixed while still permitting the spinal rods 10 to slide and glide through the bushing 150′.
[0077] In an alternative embodiment, the sleeve connector 175 can be formed as a C-clamp having two legs extending there from which are compressed together in order to clamp the position of the bushing 150′ with respect to the sleeve connector 175. When the nut 185 is tightened the first leg of the sleeve connector 175 is compressed into the second leg of the sleeve connector 175 making the bore 177 of the sleeve 176 smaller, thus clamping the position and orientation of the bushing 150′ in the sleeve 176.
[0078] Referring to
[0079] The pedicle screw shaft 137″ has a longitudinal bore (not shown) forming a cannulation that extends preferably from the tip of the screw along the longitudinal axis of the screw and extends into its distal end. Cable 162 extends through the cannulated screw along the longitudinal bore and extends beyond the distal end portion of the screw shaft 137″. A channel 161 extends through the housing member 165″ and is sized and configured to receive cable 162 there through. In use, bone connecting portion 236 may be anchored into the vertebrae or other bone with the cable 262 extending there from. The spinal rods may be inserted through the bushings 150″ and the housing member 165 preferably slides down the cable 262 to the bone connecting portion 130″. A crimp 164 may thereafter be inserted onto and slid along cable 162 and placed at the desired location along the cable 162 whereby the surgeon or other operator may secure the crimp 164 to the cable 162 by crushing it into position. Securing the crimp 164 to the cable preferably secures the housing member 165″ to the cable 162 at the desired location and preferably fixes the housing member 165″ with respect to the bone connecting portion 130″. The spinal rods 10 are permitted to slide and glide through bushings 160″ in guiding connector 120″ thus enabling growth and lengthening of the spine along a path preferably defined by the spinal rods. The guiding connectors 120′, 120″ can be used in systems and constructs described and shown in
[0080] Referring to
[0081] The spinal rods 10, 10′ are inserted through the bores 242, 244 located in the bushings 252, 254 and the cable 262 then may be wrapped around the exterior of the bushing 254, through the passageway 269 in the hub 266, around the bushing 252 and through a passage 268 formed in the stop member 267 so that the second end of the cable 262 extends out of the stop member 267. Alternatively or additionally, the cable 262 may extend through an opening 233 formed in the bone connecting portion 230 to connect the platform member 265 and bushings 250 to the bone connecting portion 230. The stop member 267 may incorporate a crimp mechanism or cable tie mechanism to fix and lock the position of the cable 262 with respect to the stop member 267. A user may be able to adjust the tension force in the cable 262 and thus adjust the tension on the guiding connector 220 and the compression force on the bushings 252, 254. Cable 262 is locked into position to retain the bushings 250 and spinal rods 10, 10′ on the guiding connector 220, preferably in a manner to position the bushings 252, 254 in a desired direction and orientation to permit the spinal rod 10 to glide and slide through the guiding connector 220 to correct and/or define a growth path.
[0082] In an alternative embodiment, instead of stop member 267, a crimp 264 (not shown) may be applied to the end of the cable 262 and crushed and locked into position to retain the bushings 250 on the platform member 265 and the bone connecting portion 230. The embodiments of
[0083] Referring to
[0084] Referring to
[0085] In use, the rods 10 are inserted through the top opening 361 so that they rest in the recess or bays 393 formed between the central protrusion 390 and the wings 380, 385. After the rods 10 are placed in the platform member 365 one of the wings 380, 385 is bent and flexed around the spinal rods. Next the other wing 380, 385 is bent around the spinal rods 10 and the first wing 380, 385. A cable tie 362 is thereafter inserted through the bore 333 and extends around the exterior surface of the folded wings 380, 385 and tightened to secure the position of the rods 10 relative to the guiding connector 330 so as to permit sliding motion of the spinal rods 10 relative to the guiding connector 330. Movement of the guiding connector 320 along the spinal rod constrains the motion and growth of the vertebrae preferably along a predetermined path. To strengthen and facilitate the bending nature of the wings 380, 385, the wings may have ridges 398 formed along the width of the wings 380, 385. Cable tie 362 also facilitates securing the platform member 365 to the bone connecting portion 330.
[0086] While the guiding connector 320 has been shown and described as having two (2) wings 380, 385 and one central protrusion 390 forming two (2) recess or bays 393 for two (2) spinal rods 10, 10′, it can be appreciated that the platform member may include only one wing, no protrusions 390, and only one recess 393 for one spinal rod. The platform member may also be configured for more than two spinal rods, and may include two or more protrusions 390, two or more recesses 393 and more than two wings.
[0087] Referring to
[0088] Connecting mechanism 495 includes two support members 496, 496′ extending from the bone connecting portion 430. Support members 496, 496′ have bores 497, while central protrusion 490 of the platform member 465 has a cavity 453 (not shown). A pin rivet or screw 499 is received through bores 497 and cavity 453 to connect wings 480, 486 to the connecting portion 495. The pin 499 in the bores 497 and the cavity 453 preferably permits the platform member 465 to rotate, swivel or pivot with respect to the bone connecting portion 430. The bendable, flexible wings 480, 485 may extend as shown in
[0089] In use, the spinal rods 10 are top loaded into the opening 461 with each spinal rod 10 inserted on one side of the guiding connector 420 so that each spinal rod 10 is located between the protrusion 490 and a wing 480, 485. When the rods 10 are adjusted into their desired position, the cable tie 462 is inserted through passageway 433 and wrapped around the wings 480, 485 and tightened to secure the spinal rods 10 to the guiding connector 420.
[0090] The guiding connector 320, 420, 420′ and cable tie 462 may be implanted using an implant holder 425 as illustrated in
[0091] To load the guiding connector 420, 420′ and cable tie 462 on the implant holder 425, the distal end 421 of the shaft 423 of the handle portion 426 is positioned proximate to the central protrusion 490, 490′ of the guiding connector 420, 420′. The cable tie 462 is inserted through the passageway 433 prior to or after the guiding connector 420, 420′ is positioned proximate the implant holder 425. The wings 480, 485 and cable tie 462 preferably are bent and deflected upward to a position along the sides of the shaft portion 423. The distal holder 427 is thereafter slid down the shaft portion 423 toward the distal end 421 of the handle portion 426. The ends of the cable tie 262 are inserted through the channel 424 of the distal holder 427 and the distal holder 427 is slid further down the shaft 423 until the wings 480, 485 are also contained within the channel 424. The distal holder 427 may cooperate with a notch or other retaining mechanism to retain the distal holder 427 on the proximal end 421 of the handle portion 426 retaining the cable tie 462 and wings 480, 485 to the implant holder 425.
[0092] The optional proximal holder 428 is then slid down the shaft 423 toward the distal end 421 of the handle portion 426 and the ends of the cable tie 462 are inserted through the channel 422 of the proximal holder 427 to retain the cable tie ends to the handle portion 426. The cable tie 462 and guiding connector 420 in this manner is loaded onto and retained on the implant holder 425 as shown in
[0093] The steps of inserting the guiding connector, cable tie and implant holder 425 into a driver instrument is illustrated in
[0094] The implant holder 425 with preassembled connector 420, 420′ and cable tie 462 as illustrated in
[0095] Referring to
[0096] Guiding connector 520 further includes a guiding portion 540 which includes an integral lateral rod-connecting member 545. Bone connecting portion 530 may have one or more sleeve elements 537 to receive one or more lateral rod connecting members 545. Lateral rod connecting members 545 are preferably laterally adjustable and securable to sleeve elements 537. A set screw (not shown) may permit adjustment and locking of the lateral rod connecting member 545 relative to the sleeve element 537. The lateral rod connecting member 545 adjusts the distance the spinal rods may be positioned relative to the spinal column and may be used to pull the spinal rods closer to the bone connecting portion or push the bone connecting portion further away.
[0097] The lateral rod connecting member 545 as shown in
[0098] Referring to
[0099] Lateral rod connecting offset connectors such as those illustrated in
[0100] Referring to
[0101] The port 763 is preferably configured to accept the connector 775 from a proximal or distal side so that lateral connector 765 can be attached to bone connecting portion 730 in both configurations shown in
[0102] Referring to
[0103] Referring to
[0104] As will be appreciated by those of skill in the art, any or all of the components described herein may be provided in sets or kits so that the surgeon may select various combinations of components to perform a stability procedure and create a system which is configured specifically for the particular needs and anatomy of a patient. It should be noted that one or more of each component may be provided in a kit or set. In some kits and sets, the same device may be provided in multiple quantities, and in different shapes and/or sizes.
[0105] The stabilization and guiding system is preferably provided to the user in a kit that may include (1) one or more elongated support members such as, for example, spinal rods; (2) one or more bone anchors for fixed securing the elongated support members to a bone (for example, a vertebrae) preferably to form one or more anchor points; (3) one or more guiding connectors with bone connecting portions and mechanisms; (4) one or more lateral connectors; and (5) one or more parallel connectors.
[0106] The guiding connectors may be preassembled and include one or more securing elements such as cable ties, straps or cables. The guiding connectors may be preassembled and loaded onto or into an implant holder and/or a driving instrument. The guiding connectors and spinal rods may be made from any biocompatible material now known or hereafter discovered including, but not limited to, metals, such as, for example, titanium, titanium alloy, stainless steel, cobalt chromium, Nitinol, etc. Other materials, such as, for example, plastics, polymers, composites, ceramics and any other material now know or later discovered also may be used for the guiding connectors and spinal rods. The rods and the guiding connectors, or portions thereof can be polished and or coated with material to facilitate and promote the relative motion of the spinal rods relative to the guiding connectors.
[0107] While the foregoing description and drawings represent the preferred embodiments of the present invention, it will be understood that various additions, modifications, combinations and/or substitutions may be made therein without departing from the broad spirit and scope of the present invention as defined in the accompanying claims. In particular, it will be clear to those skilled in the art that the present invention is not limited to the particular embodiments shown and described but may be embodied in other specific forms, structures, arrangements, proportions, and with other elements, materials, features and components, without departing from the spirit or essential characteristics of the invention. One skilled in the art will appreciate that the invention may be used with many modifications of structure, arrangement, proportions, materials, features, and components and otherwise, used in the practice of the invention, which are particularly adapted to specific environments and operative requirements without departing from the principles of the present invention. In addition, features described herein may be used singularly or in combination with other features. The presently disclosed embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, with the scope of the invention being indicated by the appended claims and not limited to the foregoing description.