73 results about "Interference screws" patented technology

Devices formed of or including biocompatible polyhydroxyalkanoates are provided with controlled degradation rates, preferably less than one year under physiological conditions. Preferred devices include sutures, suture fasteners, meniscus repair devices, rivets, tacks, staples, screws (including interference screws), bone plates and bone plating systems, surgical mesh, repair patches, slings, cardiovascular patches, orthopedic pins (including bone filling augmentation material), adhesion barriers, stents, guided tissue repair / regeneration devices, articular cartilage repair devices, nerve guides, tendon repair devices, atrial septal defect repair devices, pericardial patches, bulking and filling agents, vein valves, bone marrow scaffolds, meniscus regeneration devices, ligament and tendon grafts, ocular cell implants, spinal fusion cages, skin substitutes, dural substitutes, bone graft substitutes, bone dowels, wound dressings, and hemostats. The polyhydroxyalkanoates can contain additives, be formed of mixtures of monomers or include pendant groups or modifications in their backbones, or can be chemically modified, all to alter the degradation rates. The polyhydroxyalkanoate compositions also provide favorable mechanical properties, biocompatibility, and degradation times within desirable time frames under physiological conditions.

A method for securing soft tissue to bone which does not require the surgeon to tie suture knots to secure the tissue to the bone. A pilot hole or socket is created in the bone at the location that the graft is to be secured. Suture is passed through the graft at desired points. A cannulated plug or screw is pre-loaded onto the distal end of a driver provided with an eyelet implant at its distal end. Suture attached to the graft is passed through the eyelet of the implant located at the distal end of the driver. The distal end of the driver together with the eyelet implant is inserted into the bottom of the hole, with the screw or plug disposed just outside the hole. Tension is applied to the suture to position the graft at the desired location relative to the bone hole. The screw or plug is then frilly advanced into the pilot hole by turning the interference screw or tapping the plug until the cannulated screw or plug securely engages and locks in the eyelet implant, so that the cannulated plug or screw with the engaged eyelet implant is flush with the bone. Once the screw or plug is fully inserted and the suture is impacted into the pilot hole, the driver is removed and any loose ends of the sutures protruding from the anchor site are then clipped short.

A biodegradable interference screw for directly affixing a transplant to a bone, the interference screw being provided with at least one longitudinal groove designed to co-act with a tool for insertion of and if necessary, removal of the interference screw from an opening provided in the bone to receive both the transplant and the interference screw.

An orthopedic interference screw has a hard, self-threading front section and a bioabsorbable rear section. The two sections are conjoined and threaded such that the hard front section cuts threads into the bone and the softer rear section follows the threads into the bone. Preferably, the screw has an axial bore for matingly receiving a turning tool such as a hex wrench.

Devices formed of or including biocompatible polyhydroxyalkanoates are provided with controlled degradation rates, preferably less than one year under physiological conditions. Preferred devices include sutures, suture fasteners, meniscus repair devices, rivets, tacks, staples, screws (including interference screws), bone plates and bone plating systems, surgical mesh, repair patches, slings, cardiovascular patches, orthopedic pins (including bone filling augmentation material), adhesion barriers, stents, guided tissue repair / regeneration devices, articular cartilage repair devices, nerve guides, tendon repair devices, atrial septal defect repair devices, pericardial patches, bulking and filling agents, vein valves, bone marrow scaffolds, meniscus regeneration devices, ligament and tendon grafts, ocular cell implants, spinal fusion cages, skin substitutes, dural substitutes, bone graft substitutes, bone dowels, wound dressings, and hemostats. The polyhydroxyalkanoates can contain additives, be formed of mixtures of monomers or include pendant groups or modifications in their backbones, or can be chemically modified, all to alter the degradation rates. The polyhydroxyalkanoate compositions also provide favorable mechanical properties, biocompatibility, and degradation times within desirable time frames under physiological conditions.

An interference screw comprising:an open helical coil having a proximal end and a distal end aligned along a longitudinal axis and defining an internal volume, with the internal volume communicating with the region exterior to the open helical coil through the spacing between the turns of the open helical coil; andat least one runner disposed within the internal volume and connected to multiple turns of the open helical coil.

A bioabsorbable interference screw having a tapered profile which extends along substantially the entire length of the screw. The tapered profile makes the screw easy to insert while providing superior fixation resulting from a progressively increasing diameter. Upon insertion, the screw engages cortical bone at the back end of the bone tunnel and fills all but 5-10 mm. of the tunnel, thereby providing increased fixation strength while also promoting fast healing. The screw includes a head provided with a specially designed drive socket with radially extending slots at its outer end for receiving corresponding protrusions on the shaft of screwdriver. The drive socket optimizes the torque capacity of the screw. To maintain wall thickness, the socket has a taper corresponding to the tapered outer profile of the screw. The taper of the socket also permits easy insertion of the tip and shaft of the driver into the screw.

The invention is directed toward a bone block, a bone-tendon-bone assembly and method of tendon reconstruction in which at least one tendon replacement is extended between two bone blocks and fixed within each of two bone tunnels in the bones of a joint using interference screws. Each bone block has a central through going bore and at least one substantially parallel channel longitudinally cut in the exterior of the bone block body in which the ligament replacements are seated. One end of each bone block has a rounded recess leading from the central bore to the exterior parallel channel.

A method and device for knotless fixation of tissue. A swivel anchor having a rotatable forked anchor tip is used to capture suture, such as a suture chain, for surgical tissue repair without requiring suture knots. Tension on the repair constructs is adjustable through the selection of the specific chain link or links of the suture chain captured by the forked anchor tip of the swivel anchor. The swivel anchor is secured in a hole in bone by advancing a fixation device, such as a cannulated interference screw, over the body of the anchor.

A method for securing soft tissue to bone which does not require the surgeon to tie suture knots to secure the tissue to the bone. Suture is passed through the graft at desired points. A cannulated plug or screw is pre-loaded onto the distal end of a driver provided with an eyelet implant at its distal end. Suture attached to the graft is passed through the eyelet of the implant located at the distal end of the driver. The distal end of the driver together with the eyelet implant is inserted into the bone. Tension is applied to the suture to position the graft at the desired location relative to the bone. The screw or plug is advanced into the pilot hole by turning the interference screw or tapping the plug until the cannulated screw or plug securely engages and locks in the eyelet implant, so that the cannulated plug or screw with the engaged eyelet implant is flush with the bone. Once the screw or plug is fully inserted and the suture is impacted into the bone, the driver is removed and any loose ends of the sutures protruding from the anchor site are then clipped short.

A jamming retainer for fixing a ligament in a bone tunnel without excessive sideways pressure on the ligament that may result in tissue necrosis the jamming retainer including a substantially rigid body with a bore or loop for receiving a ligament or tendon and a bore or ring for receiving a suture for towing the jamming retainer and ligament or tendon through a bone tunnel. Once positioned, the jamming retainer is fixed in the bone tunnel with an interference screw.

An all-inside double-socket ACL reconstruction technique, according to which a femoral socket and a closed tibial socket are provided to accommodate retrograde fixation of at least one graft (for example, a semitendonosus allograft) within the sockets. The closed tibial socket is formed by using a retrograde drill device provided with a retrograde drill cutter detachable from a retrograde drill guide pin. The femoral socket may be formed by the retrograde drill method or by a conventional method, and may be carried out before or after the formation of the tibial socket. The graft is secured in the knee by employing a transversal implant, or by employing an interference screw, and / or a continuous loop / button construct.

The invention is directed toward a bone block, a bone-tendon-bone assembly and method of tendon reconstruction in which at least one tendon replacement is extended between two bone blocks and fixed within each of two bone tunnels in the bones of a joint using interference screws. Each bone block has a central through going bore and at least one substantially parallel channel longitudinally cut in the exterior of the bone block body in which the ligament replacements are seated. One end of each bone block has a rounded recess leading from the central bore to the exterior parallel channel.

An all-inside double-socket ACL reconstruction technique, according to which a femoral socket and a closed tibial socket are provided to accommodate retrograde fixation of at least one graft (for example, a semitendonosus allograft) within the sockets. The closed tibial socket is formed by using a retrograde drill device provided with a retrograde drill cutter detachable from a retrograde drill guide pin. The femoral socket may be formed by the retrograde drill method or by a conventional method, and may be carried out before or after the formation of the tibial socket. The graft is secured in the knee by employing a transversal implant, or by employing an interference screw, and / or a continuous loop / button construct.

A method and device for knotless fixation of tissue. A swivel anchor having a rotatable implant is used to capture suture for surgical tissue repair without requiring suture knots. The implant may be provided with a conical metal tip which is self-punching and avoids the need for pre-drilling a hole in bone. The implant includes a closed aperture to allow free sliding of a suture strand. The swivel anchor is secured in a hole in bone by advancing a fixation device, such as a cannulated interference screw, over the body of the implant.

A transverse guide assembly for use in passing a transverse pin through a host bone and through a transversely-extending region formed in an interference screw, wherein the transverse guide assembly includes a key member, a boom member and a guide member, and further wherein the key member is adapted to be connected to a keyway formed in the proximal end of the interference screw, the boom member is connected to the key member and supports the guide member outboard of the interference screw, and the guide member is configured to support a drill for forming a hole to receive the transverse pin which extends transversely through the host bone and the transversely-extending region formed in the interference screw.

A biocompatible interference screw for soft tissue or bone-to-bone fixation comprises a screw body extending from a screw head to a distal tip of the screw. The screw body has an outer surface, and comprises polyether-ether-ketone (PEEK) material. Advantageously, the body outer surface has a textured surface finish for substantially improving pull-out strength of the interference screw. The textured surface finish is textured, in preferred embodiments, with a minimum of approximately 16 micro inches of surface roughness. The screw head comprises a tapered square keyhole for receiving a distal end of a driver instrument. The screw comprises a series of threads, which have a relatively smooth profile, in order to prevent graft tissue laceration as the screw is being inserted. The distal tip of the screw body comprises a narrow tip, and a distal end of the screw body is angled inwardly toward the narrow distal tip.

A fenestrated suture anchor for fixation of tissue to bone. In a preferred embodiment, the suture includes an implant, such a swivel implant with a forked tip for capturing suture. The implant is secured in a hole in bone by advancing a fixation device, such as a cannulated interference screw, to engage and fully seat the implant. The cannulated fixation device is provided with a plurality of openings or fenestrations of various dimensions and geometries to provide multiple pathways through the anchor (i.e., though the interior of the body and through the fenestrations) to allow blood to flow to increase the healing zone, for example, for rotator cuff repair, while also promoting bone in-growth.

Embodiments of the present invention provide a cannulated screw driver assembly which includes a rigid guide pin such that the assembly can be used to assist the surgeon in inserting and positioning the rigid guide pin and an interference screw within a bone graft tunnel. Once the screw is properly placed, screw driver assembly components to include the rigid guide pin, the driver and the handle can be removed while the screw remains in the tunnel to secure the graft. In one embodiment, the interference screw can be removed from the distal end of the driver and the driver and handle can be removed from the screw's proximal end. Embodiments of the inventions also include an interchangeable driver to mate with different size and types of interference screws.

A method and device for knotless fixation of tissue. A swivel anchor having a rotatable forked anchor tip is used to capture suture, such as a suture chain, for surgical tissue repair without requiring suture knots. Tension on the repair constructs is adjustable through the selection of the specific chain link or links of the suture chain captured by the forked anchor tip of the swivel anchor. The swivel anchor is secured in a hole in bone by advancing a fixation device, such as a cannulated interference screw, over the body of the anchor.

The invention is directed toward a bone block, a bone-tendon-bone assembly and method of tendon reconstruction in which at least one tendon replacement is extended between two bone blocks and fixed within each of two bone tunnels in the bones of a joint using interference screws. Each bone block has a central through going bore and at least one substantially parallel channel longitudinally cut in the exterior of the bone block body in which the ligament replacements are seated. One end of each bone block has a rounded recess leading from the central bore to the exterior parallel channel.

A method and device for knotless fixation of tissue. A swivel anchor having a rotatable implant is used to capture suture for surgical tissue repair without requiring suture knots. The implant may be provided with a conical metal tip which is self-punching and avoids the need for pre-drilling a hole in bone. The implant includes a closed aperture to allow free sliding of a suture strand. The swivel anchor is secured in a hole in bone by advancing a fenestrated fixation device, such as a cannulated interference screw, over the body of the implant.

A facet interference screw (10) for insertion between the facet joints of adjacent superior and inferior vertebrae includes an externally threaded shaft portion and a head. The facet interference screw is preferably split into first (20) and second (30) components, each including an outer, semicircular externally threaded surface (22, 32) so that when coupled together the semicircular externally threaded surfaces form the externally threaded shaft portion. The inner surfaces (24, 34) of the first and second components may include curved contacting surfaces so that when inserted, the first component is movable with respect to the second component. Alternatively, the screw may include a damping component (60a′) between the inner surfaces of the first and second components to facilitate damping of the first and second components with respect to one another. The damping component preferably also facilitates articulated motion of the first and second components.

A method for securing soft tissue to bone which does not require the surgeon to tie suture knots to secure the tissue to the bone. Suture is passed through the graft at desired points. A cannulated plug or screw is pre-loaded onto the distal end of a driver provided with an eyelet implant at its distal end. Suture attached to the graft is passed through the eyelet of the implant located at the distal end of the driver. The distal end of the driver together with the eyelet implant is inserted into the bone. Tension is applied to the suture to position the graft at the desired location relative to the bone. The screw or plug is advanced into the pilot hole by turning the interference screw or tapping the plug until the cannulated screw or plug securely engages and locks in the eyelet implant, so that the cannulated plug or screw with the engaged eyelet implant is flush with the bone. Once the screw or plug is fully inserted and the suture is impacted into the bone, the driver is removed and any loose ends of the sutures protruding from the anchor site are then clipped short.

The present disclosure relates to a delivery device and screw combination. The combination includes a delivery device comprising a handle and a shaft coupled to the handle, the shaft including a proximal end, a distal end, a non-circular cannulation, and markings along a length of the shaft; an interference screw coupled to the delivery device comprising a proximal end and a distal end, the screw including threads extending in an open helical form from the proximal end to the distal end, a suture bridge located at a distal end of the screw and housed within a slot of the delivery device shaft, and a plurality of runners extending longitudinally along an interior of the screw, the runners housed within grooves of the delivery device shaft; and a suture disposed around the suture bridge, ends of the suture extending through the cannulation of the delivery device shaft.

Techniques and reconstruction systems for fixation of bone to bone, or soft tissue to bone, that allow a double-bundle type construct with only three tunnels, a single graft and individual tensioning in each of the three tunnels. Alternative double-bundle ACL / PCL fixation techniques are provided that employ a double-bundle type construct with only a single graft and three tunnels / sockets. The double-bundle ACL and PCL techniques and constructs allow individual tensioning of each of the bundles (e.g., tensioning of each of the anteromedial (AM) and posterolateral (PL) bundles of the ACL) and eliminate the need for additional fixation devices (for example, interference screws) to secure the bundles within the bone tunnels / sockets.

A porous metal intervertebral spacer having at least one angled through hole extending from the side of the implant to a surface which interfaces with a vertebral body end plate such that an interference screw may be driven through the implant and into the bone, thereby securing the implant from undesired motion. In particular, the through holes are tapered to receive a screw and coupling element therethrough such that once fully seated, the screw is locked to the implant by virtue of a coupling element-through hole mutually tapered nesting. The head of the screw is round, as is the interior of the coupling element, thereby allowing the screw to be inserted at various angles relative to the hole without interfering with the proper seating of the coupling element in the through hole.