284 results about "Bone anchor" patented technology

A rod-shaped implant element (1, 100, 101, 102, 300) is disclosed for the connection of bone anchoring elements, Each bone anchoring element has an anchoring section (12) to be anchored in the bone and a receiver member (13) to be connected to the rod-shaped implant element The rod-shaped implant element has at least one rigid section (7, 8) that is configured to be placed in the receiver member (13). It also has a flexible section (9, 90, 900, 902) that is adjacent to the rigid section. The flexible section and the rigid section are formed in one piece. Also disclosed is a stabilization apparatus using a rod-shaped implant element and at least two of the bone anchoring elements. The stabilization apparatus can limit the movement of two vertebrae or parts of a bone in relation to each other in a defined manner.

Exemplary spinal fixation devices, systems, and method are provided for stabilizing vertebrae in a patient's spine. In one exemplary embodiment, methods and devices are provided for coupling one or more bone anchors, such as hooks, screws, etc., and/or one or more spinal fixation elements, such as spinal rods, cables, plates, etc. In certain exemplary embodiments, a cross connector is provided for connecting and stabilizing two bone anchors, a bone anchor and a spinal fixation element, or a bone anchor and bone.

A prosthetic screw system that includes a prosthetic screw for at least partial insertion into a bone and/or cartilage. The prosthetic screw includes a head and a lower portion connected to the head. The prosthetic screw system also includes a set of head-pieces that can be connected to the head of the prosthetic screw. The head-pieces have differing configurations that are designed to be connected to different types of components of a prosthetic system. The universal connection arrangement between the prosthetic screw and the set of head-pieces enables the prosthetic screw to be customized for connection with a variety of components of a prosthetic system. The head-pieces can alternatively or additionally include a mechanical and/or electrical mechanism that provides one or more substances (e.g., medicine and/or other biological agent, etc.) and/or electrostimulation to a surgical site.

The present invention is directed to a bone plate and its method of use for reducing a bone fracture, the bone plate having a longitudinal axis, the bone plate comprising an upper surface, a lower surface, a first hole for engaging a head of a first bone anchor. The first hole is configured and adapted to fix a shaft of the first bone anchor along a first axis. A second hole is spaced apart from the first hole along the longitudinal axis. The second hole is for engaging a head of a second bone anchor, and is configured and adapted to fix a shaft of the second bone anchor along a second axis. The first hole and the second hole are configured such that the first axis and the second axis define a single plane and intersect at a point below the lower surface. The shafts of the first and second bone anchors may touch or nearly touch at the point of intersection, such that the first and second bone anchors form a truss.

A stabilization system for implantation in a patient includes: a bone anchor including a head and a shaft, the shaft extending away from the head in a bone insertion direction and being operable for connection to a bone of the patient; and a tulip including: at least one channel having an opening for receiving an elongate member, the opening being oriented in a receiving direction having at least a component thereof substantially opposite to the bone insertion direction of the anchor, and (ii) a fastening mechanism operable to apply a tangential load on the elongate member to maintain the elongate member within the channel, wherein the tangential load is transverse to at least the receiving direction.

A bone anchoring device includes an anchoring element having a shank to be anchored in a bone or a vertebra and a head, a connection element for connecting at least two anchoring elements, a receiving part having a first end receiving the head, wherein the head is pivotable in the receiving part, and a second end comprising a recess for receiving the connection element, a first pressure element which exerts pressure on the head to lock the head in the receiving part, and a second pressure element which exerts pressure on the connection element to press the connection element against the first pressure element. The contour of the surface of at least the first pressure element or the second pressure element facing the connection element deviates from the contour of the surface of the connection element.

Knotless fixation of soft tissue to bone is accomplished using a bone anchor configured to provide interference fixation of a soft-tissue connector. The soft-tissue connector is provided in the form of a flat narrow piece of material. Additional fixation strength can be provided by configuring the bone anchor to penetrate into or through the soft-tissue connector. The bone anchor is installed into a pre-formed hole or socket in the bone.

Disclosed is a fixation device for spinal fixation. The fixation device includes an elongated body comprising a bone anchor at a distal end. An axially moveable proximal anchor is carried by the proximal end of the fixation device. In one embodiment, the device is inserted through a first vertebra and the bone anchor is rotated into positioned within a second vertebra. The proximal anchor is distally advanced with respect to the bone anchor to provide compression across the first and second vertebra. In other embodiments, the device is used to secure stabilization devices across two or more vertebra.

An apparatus and method for assembling a soft tissue reconstruction system having first and second anchor assemblies. The apparatus includes a base plate, a first mounting block mounted to the base plate and having a first reference surface against which the first anchor assembly is mountable, a second mounting block slidably mounted to the base plate and having a second reference surface against which a bone anchor of the second anchor assembly is mountable, a measurement bar extending from the second mounting block and slidable relative to the first mounting block, a support block slidably mounted to the measurement bar having a third reference surface for abutting against a tissue presentation surface of the second anchor assembly, and a tensioning device for tensioning a graft attached to the first anchor assembly. Indicia on the measurement bar indicate the proper locations of the reference surfaces and components mounted/abutted thereto.

Disclosed herein are methods and devices for securing soft tissue to a rigid material such as bone. A bone anchor is described that comprises an anchor body with expandable tines and a spreader that expands the tines into bone. Also disclosed is a bone anchor that comprises a base and a top such that suture material may be attached to apertures in the anchor top or else compressed between surfaces on the base and top to secure the suture to the anchor. Also described is an inserter that can be used to insert the bone anchor into bone and move the spreader relative to the anchor body attach suture material. Also described is an inserter that can be used to insert the bone anchor into bone and move the anchor top relative to the anchor body or anchor base to attach to or clamp suture material there between. Methods are described that allow use of single bone anchor to secure tissue to bone or also to use more than one bone anchor to provide multiple lengths of suture material to compress a large area of soft tissue against bone.

The invention relates to a deployment systems for deploying a bone fixation device. One embodiment of a deployment system includes a syringe-shaped body configured to provide proximal traction to a bone fixation device in response to a compressive force between a finger grip and a plunger adapted to be engaged by the heel of a clinician's hand. The device may include a collet for gripping a proximal pin of a fixation device. The deployment device may also include a tool that includes an elongate body with a distal tip adapted to rotationally engage a bone fixation device in order to axially rotate the fixation device. A further deployment device embodiment includes a cauterizing tip for heat-cutting an excess portion of a pin of a bone fixation device.

Implant and delivery systems for soft tissue repair which affix soft tissue portions to a region of bone are described. Generally, the assembly includes two bone anchors preloaded through an inserter handle such that each anchor is penetrated into the bone directly. The first anchor is inserted through the tissue and into the bone, where it is locked into position. The first anchor has a suture or wire that protrudes through the tissue and threads through the second anchor and is secured to a rotatable suture reel located along the handle. The second anchor is inserted through the tissue and into the bone independently of the first anchor. Once the second anchor is deployed, the suture or wire is tensioned to secure the soft tissue to the bone and a suture plug within the second anchor is deployed to lock the suture or wire in place.

A surgical driver includes an elongated drive shaft engageable with a surgical bone anchor in torque transmitting relationship, a locking sleeve, and a sleeve locking member. The locking sleeve is mounted to the drive shaft and is engageable with the head of surgical bone anchor. The sleeve locking member is mounted for relative motion between a first position in which it is simultaneously engaged with both the drive shaft and the locking sleeve in rotationally fixed relationship and a second position in which it is disengaged from the rotationally fixed relationship with at least one of the drive shaft and locking sleeve.

A bone anchor assembly includes a bone anchor, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, and a closure mechanism to fix the spinal fixation element with respect to the receiver member. The bone anchor includes a distal shaft having a distal threaded section and a proximal threaded section. The distal threaded section has a first pitch and a first number of thread starts and the proximal threaded section has a second pitch less than the first pitch and a second number of thread starts greater than the first number of thread starts. The distal threaded section and the proximal threaded section have a constant lead.

A stabilization rod engaging apparatus for implantation in a patient includes: a first pivot element including at least one first aperture, a first engagement element, and a first locking element; a second pivot element including at least one second aperture, a second engagement element, and a second locking element, wherein: the first and second apertures are sized, shaped and disposed in substantial axial alignment such that they are operable to receive the stabilization rod therethrough, and displacement of the first and second locking elements relative to one another urges the first and second apertures to misalign and thereby clamp the stabilization rod.

Methods and apparatus for connecting to a bone, which avoid the use of bone screws. A triangular shaped modular implant is used, with two sides of the structure and their respective vertex secured generally within the bone, with the base of the triangle outside the bone. These two arms, whether straight or arcuate, are cannulated, and are held together at their distal ends by a tightened cable that runs through both of the arms. The proximal ends of these arms are connected to a base side that completes the triangular structure. The device may be inserted into a vertebra and the base used for vertebral fusion. Alternatively, the arms themselves may be used to stabilize and fixate adjacent vertebrae, by insertion through adjacent vertebrae trans-segmentally. In the latter case, the vertex may be within the intervertebral space or within the vertebral body close to the intervertebral space.

A bone plate for fixation of a fractured bone comprises a first portion having a first longitudinal axis, an upper surface and a lower surface and a second portion having a second longitudinal axis, an upper surface and a lower surface. The second portion is angled with respect to the first portion such that the lower surface of the first portion and the lower surface of the second portion define an included angle therebetween. The first portion has at least one hole for receiving a bone anchor having a shaft. The hole has a first hole portion defining a first central axis substantially perpendicular to the lower surface and the first hole portion is configured to receive the bone anchor. The hole includes a second hole portion overlapping and in communication with the first hole portion from upper to lower surface defining a second central axis substantially angled with respect to the first central axis, the second hole portion is configured to receive the bone anchor such that the shaft is substantially angled with respect to the second portion of the bone plate so as to form a truss.

A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. A down-loadable compression insert with tool receiving arm extensions, a down-loadable friction fit split retaining ring and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled.