Patent classifications
A61B17/862
ORTHOPEDIC IMPLANT KIT
An implant kit has an adapter having a first end, a second end, and a longitudinal axis extending from the first and to the second end, wherein the first end is configured for removably receiving and engaging an implant and the second end is configured for removably coupling to a driver shaft of an implant driving tool, and an implant preloaded into the first end of the adapter, the implant having an elongated threaded portion; and a blade portion extending from the elongated threaded portion, and having two serrated edges, wherein the blade portion is received in the first end of the adapter and the elongated threaded portion of the implant is coaxially aligned with the longitudinal axis of the adapter.
Push-off driver and method for inserting bone screws
A method and device for inserting screws into a patient, such that when the device is removed the device does not stick to the screw. The device, being a push-off driver, may have a handle, an inner driver, and a threaded driver sleeve having a button mechanism and a plurality of spheres, and an inner sleeve. The method includes the steps of assembling a push-off driver attaching a bone screw to the push-off driver inserting the bone screw and detaching the bone screw from the driver by unthreading the threaded driver sleeve from the polyaxial screw which causes the spheres in the recess of the inner driver to back up against the start of the recess and causing the threaded driver sleeve to push-off the polyaxial screw from the inner driver.
BONE SCREW
It is possible to provide a bone screw with sufficient strength. The bone screw of the present invention includes reinforced fibers and comprises a shaft, a tip located at the end of the shaft in the insertion direction, a head located at the end of the shaft in the removal direction, and a thread spirally located in the axial direction around the outer circumference of the shaft. The reinforced fibers are arranged along the axial direction of the shaft.
Multi-feature polyaxial screw
Bone anchor assemblies are disclosed herein that provide for a single bone anchor assembly that can be utilized across a range of spinal surgical procedures, reduce manufacturing burden and cost, and provide for greater flexibility during a surgical procedure. The bone anchor assemblies disclosed herein include an implantable shank and a receiver member having two spaced apart arms which form a U-shaped seat to receive a rod, among other components. The bone anchor assemblies disclosed herein also provide a number of features to enhance capability and usability. Examples include features to facilitate better implantation of the shank, better coupling of instrumentation to the anchor, better performance in reducing a spinal fixation element, such as a rod, into the receiver member seat, and others.
Self-holding screw head
A screw insertion system has a screw having a threaded shaft and a head. The head has a conically tapered outer surface, the taper increasing in distance from a central longitudinal axis of the screw from a free end of the head towards a larger diameter adjacent the connection between the head and the threaded shaft. The conically tapered head outer surface has preferably two helically extending partially rounded threads. The head has a drive element for engaging a driver. A tubular screw holder has an outer surface and internal bore extending between a leading end and a trailing end for receiving the screw. The leading end having a conically tapered inner threaded portion for engaging the conically tapered outer thread of the screw head. The tubular screw holder outer surface having a diameter less than or equal to the maximum diameter of the conically tapered head.
TELESCOPIC NAIL AND ASSOCIATED PERFORATING TOOL
A method for implanting a telescopic nail may include providing a telescopic nail comprising a hollow stem, a rod inserted telescopically into the hollow stem, a first fastening element configured to couple to an end of the hollow stem for fixing to a first long bone end, and a second fastening element configured to couple to an end of the rod for fixing to a second long bone end. The end of the hollow stem couples to a coupling end of a perforating tool. The method further includes the steps of inserting the perforating tool opposite to the coupling end inside the cavity, coupling the end of the hollow stem of the telescopic nail together with a counter-coupler of the coupling end of the perforating tool, and advancing the perforating tool inside the cavity until it comes out completely from the other long bone end.
Multi-feature polyaxial screw
Bone anchor assemblies are disclosed herein that provide for a single bone anchor assembly that can be utilized across a range of spinal surgical procedures, reduce manufacturing burden and cost, and provide for greater flexibility during a surgical procedure. The bone anchor assemblies disclosed herein include an implantable shank and a receiver member having two spaced apart arms which form a U-shaped seat to receive a rod, among other components. The bone anchor assemblies disclosed herein also provide a number of features to enhance capability and usability. Examples include features to facilitate better implantation of the shank, better coupling of instrumentation to the anchor, better performance in reducing a spinal fixation element, such as a rod, into the receiver member seat, and others.
Telescopic nail and associated perforating tool
Telescopic nail for the treatment of fractures or deformations of long bones, as for example in the case of osteogenesis imperfecta or pseudo arthrosis. Comprising of a hollow stem; a rod telescopically inserted into said hollow stem; a first fastening element coupled to an end of said hollow stem for fixing to a first long bone end; a second fastening element coupled to an end of said rod for fixing to a second long bone end. Advantageously, one end of said hollow stem is provided with coupling means for coupling to an end of a tool which can be inserted into a cavity formed in the bone for insertion of the nail.
Surgical guide and fixation insertion device
A surgical guidance device is cannulated for passage of a guidewire or pin and includes a hand grip and differential control assembly for driving the guidewire or pin and differentially driving a screw, such as but not limited to a pedicle screw, into bone. The differential control assembly resides in a housing, and includes a differential control assembly for gripping and locking or releasing the guidewire or pin and effecting directional movement (relative to the user holding the surgical guidance device) either distally into the bone or proximally away from bone to thereby drive or retract the guidewire. The differential control assembly also allows distal or proximal drive of a screw, such that one or both the guidewire and screw can be passed proximally or distally alone or together.
POLYHEDRAL FIDUCIAL MARKERS FOR COMPUTER-ASSISTED SURGERY
Disclosed are systems and methods for polyhedral fiducial marker configurations that improve the mechanisms for their placement as well how they can be relied upon for surgery. The disclosed fiducial markers are configured with polyhedral shapes and increased marker surfaces, and improved marker designs that offer improved installation and system tracking, which leads to improved procedural efficiency and outcomes from surgery. The disclosed polyhedral fiducial markers can have a shape geometry with a number of faces that is an increase from existing markers. This provides improved mechanisms for installation and tracking with a camera system. Moreover, improved installation tools for the polyhedral fiducial markers can be utilized, which can be based on how the fiducial marker is held at the distal end of the installation tool. Such categorical installation tools can include: magnet-based embodiments; clip-based embodiments (e.g., O-ring and spring clip variants); and friction-based embodiments.