Abstract:
A surgical instrument (700) and method are provided for removal of a spinal implant (170) from the intervertebral disc space. The instrument (700) includes a carriage body (710) for interfacing with the implant (170), a housing (740) for interfacing with the vertebrae, and a handle portion (770) having a first portion (772) rotatably coupled with a proximal end (744) of the housing (740) and a second portion (774) rotatably engageable with a proximal attachment portion (714) of the carriage body (710). A central passage (746) of the housing (740) extends between the proximal end (744) and a distal engagement surface (742) of the housing (740). The central passage (746) is dimensioned to mate with the carriage body (710). Rotation of the handle portion (770) about an axis causes translational movement of the carriage body (710) along the axis. A modular inserter/distractor apparatus (200) and method and an anchor remover (400) and method are also provided.
Abstract:
A surgical instrument and method for inserting a spinal implant (100, 170) in the intervertebral disc space between two adjacent vertebrae and an anchor (130, 140, 150, 160, 164, 166) engageable with the implant (100, 170) and an adjacent vertebra are provided. The instrument includes an inserter (200, 500) having an engagement portion including a distal engagement surface (206, 506) for interfacing with the implant (100, 170) and a handle portion (208, 508). The engagement portion includes a track (218, 220, 518, 519, 520, 521) for slidably translating the anchor (130, 140, 150, 160, 164, 166) toward the engagement surface (206, 506). A kit is provided including the inserter (200, 500) and a tamp (400, 600) to force the anchor (130, 140, 150, 160, 164, 166) into engagement with the implant (100, 170) and the adjacent vertebra. The kit may also include a cutter (300) for piercing the adjacent vertebra.
Abstract:
A surgical instrument and method for inserting a spinal implant (100, 170) in the intervertebral disc space between two adjacent vertebrae and an anchor (130, 140, 150, 160, 164, 166) engageable with the implant (100, 170) and an adjacent vertebra are provided. The instrument includes an inserter (200, 500) having an engagement portion including a distal engagement surface (206, 506) for interfacing with the implant (100, 170) and a handle portion (208, 508). The engagement portion includes a track (218, 220, 518, 519, 520, 521) for slidably translating the anchor (130, 140, 150, 160, 164, 166) toward the engagement surface (206, 506). A kit is provided including the inserter (200, 500) and a tamp (400, 600) to force the anchor (130, 140, 150, 160, 164, 166) into engagement with the implant (100, 170) and the adjacent vertebra. The kit may also include a cutter (300) for piercing the adjacent vertebra.
Abstract:
A method of producing a cartilage implant which may include coating a substrate with a thermo-sensitive polymer, seeding the polymer with a cell suspension comprising cells that may differentiate into chrondocyte-like cells, wherein the seeding may be conducted at a first temperature, culturing the cell suspension at an increased temperature, whereby cells in the suspension may adhere to the polymer and differentiate into chrondrocyte-like cells, which may form a cartilagenous implant, and decreasing the temperature of the polymer which may allow detachment of the implant from the polymer. The present invention may also include an implant based on this method. The invention may further include a cartilage implant for use in a patient in need thereof, which may include a random three-dimensional configuration of differentiated cells, which may have a natural adhesion surface on at least a portion of the outer surface of the three-dimensional configuration.
Abstract:
The present invention relates to medical devices for repairing tissue and more specifically to devices which facilitate tissue regeneration and to surgical methods for the implantation and fixation of such devices. In one embodiment, the medical device is an elongate conduit that includes a longitudinal bore extending therethrough to facilitate the transfer of blood from a vascular region of tissue to a tear or damaged area located in an avascular and/or semi-vascular region of tissue. A filament and/or filaments are attached to the conduit and are positioned to secure the conduit and fixate the adjacent tear walls in mutual engagement. In another embodiment, a series of conduits are connected via a filament and/or filaments to facilitate the implantation of multiple conduits.
Abstract:
A prosthetic bearing component for use in joint replacement comprising a first element having a first magnetized layer (26) disposed thereon, configured with a pole (N) facing in a proximal direction, and a second element having a second magnetized layer (36) disposed thereon. The second element is configured to engage the first element, and the second magnetized layer (36) is configured with an equivalent pole (N) facing in a distal direction, whereby the pole (N) of the first magnetized layer (26) is positioned opposite the equivalent pole (N) of the second magnetized layer (36) such that a repellant force is created therebetween. The prosthetic bearing component further having a corrosion resistant layer (24, 34) covering the first and second magnetized layers (26, 36), and a wear resistant layer (22, 32) covering the corrosion resistant layer (24, 34) and forming a bearing surface of the prosthetic bearing component.
Abstract:
Method and apparatus for preparing a seating surface of prescribed depth, contour configuration and area delineated by a prescribed peripheral boundary extending along the bone of a natural joint at which a prosthetic device is to be implanted includes positioning a guide (80) on the bone, the guide (80) having a guide slot (120) following a path geometrically similar to the peripheral boundary of the seating surface, inserting a cutting device (150) altitudinally through the guide slot (120), and translating the cutting device (150) along the guide slot (120) to cut an outline groove in the bone coincident with the peripheral boundary of the seating surface. The guide (80) then is removed from the bone, and portions of the bone lying within the area delineated by the outline groove are removed to establish the seating surface.
Abstract:
An apparatus and method for spinal fusion includes an implant having a plurality of side walls connected to each other to define an enclosed structure. The implant is advantageously dimensioned to facilitate insertion and retention between adjacent vertebrae, and enhance fusion with adjacent vertebral bones.
Abstract:
A method comprises obtaining position data generated based on signals from one or more sensors of a mixed-reality (MR) visualization device while the bones of the joint are at a plurality of positions; determining, based on the position data, positions of the bones of the joint; generating, by the surgical assistance system, joint tension data based on the positions of the bones of the joint; determining, based on the joint tension data, areas of a target bone to remove, wherein the target bone is one of the bones of tire joint; generating registration data that registers markers with a coordinate system, wherein the markers are attached to one or more of the bones of the joint; and based on die registration data, controlling operation of a robotic arm of a robot during removal of bone tissue from the areas of the target bone.
Abstract:
A glenosphere handling tool, which can be an inserter, is provided that includes an elongate body and a retention portion. The retention portion is disposed at a distal end of the elongate body. The retention portion includes a plurality of wall segments of the elongate body separated from each other by one or more slots. The slot(s) extends proximally from the distal end of the elongate body. The retention portion also includes an enlarged periphery at the distal end of the elongate body. The enlarged periphery comprising a proximally facing edge configured to engage an inner wall surface of a glenosphere. The retention portion is configured such that when the retention portion is in a free state the proximally facing edge faces and may contact a surface of a glenosphere to retain the glenosphere.