摘要:
Systems, methods and devices for providing stabilization between first and second vertebrae are provided. More particularly, in one form a system includes an implant configured to be positioned in a disc space between the first and second vertebrae and a freestanding plate for engagement with extradiscal surfaces of the first and second vertebrae. The system also includes an insertion instrument with an engaging portion configured to releasably engage with the implant and the plate such that the implant and plate can be positioned together relative to the first and second vertebrae. In one aspect, an angular orientation of the implant relative to the plate is adjustable when the implant and the plate are engaged by the instrument. In this or another aspect, the implant and plate are held in a contiguous relationship when engaged by the instrument. However, different forms and applications are also envisioned.
摘要:
A method of patient assessment, treatment, and outcome modeling is disclosed. The method includes obtaining patient characteristic information from a current patient, defining a plurality of therapeutic factors based on the characteristic information of the current patient, and weighting the therapeutic factors. The method also includes accessing at least one database having medical records of prior patients, the medical records including prior patient characteristic information, prior patient treatment plan, and prior patient outcome, comparing the weighted factors of the current patient to the medical records of the prior patients to identify one or more relevant prior patient records, and retrieving at least a portion of the relevant prior patient records, the portion including at least the prior patient treatment plan and the prior patient outcome. The method also includes performing a simulation of at least one of the prior patient treatment plans based on the current patient's characteristic information and selecting a treatment plan for the current patient.
摘要:
An implant assembly for stabilizing a spinal motion segment includes a spacer which is at least partially flexible and positionable between adjacent spinous processes. The spacer member includes upper and lower surfaces structured to receive a respective adjacent one of the upper and lower spinous processes of the spinal motion segment and a body having flexibly distinctive first and second sections relative to one another configured to modify the manner of movement at the spinal motion segment.
摘要:
A method of manufacturing a curved spinal rod is disclosed. The method includes heating PEEK; injecting the PEEK into an arcuate spinal rod mold; holding the injected PEEK in the mold until the PEEK substantially sets; and removing the injected PEEK from the mold. In another aspect, a spinal rod is disclosed. The spinal rod includes an arcuate main body having a first end portion, a second end portion, and a central portion. The central portion has a non-circular cross-section with a height greater than its width. The first and second end portions and the central portion of the arcuate main body are integrally formed of a polymer such as polyetheretherketone (PEEK). The spinal rod also includes a rounded end cap adapted to mate with at least one of the end portions. The end cap is radiopaque.
摘要:
A multi-piece intervertebral disc augmentation implant that may be assembled within the annulus fibrosus is disclosed. The implant may be guided into a precise location through a relatively small opening in the annulus fibrosus with the aid of an elongated guide.
摘要:
A method of implanting a spinal prosthesis comprises inserting a first member between superior and inferior spinous processes associated with respective superior and inferior vertebrae. The superior and inferior vertebrae are separated by an intermediate vertebra. The method further includes inserting a second member through a channel in the first member. After the second member is inserted, the method requires removing the second member from the channel and inserting a third member through the channel. The third member has a different stiffness than the second member. Finally, the method requires anchoring the third member to the intermediate vertebra, while the third member is inserted through the channel. The third member is anchored at first and second locations disposed on respective first and second lateral sides of the intermediate vertebra.
摘要:
A prosthetic system for implantation between upper and lower vertebrae comprises an upper joint component. The upper joint component comprises an upper contact surface and an upper articulation surface. The system further includes a lower joint component. The lower joint component comprises a lower contact surface and a lower articulation surface configured to movably engage the upper articulation surface to form an articulating joint. The articulating joint is adapted for implantation within a disc space between the upper and lower vertebrae, allowing the upper and lower vertebrae to move relative to one another. The system further includes a bridge component extending posteriorly from one of either the upper or lower joint components and from the disc space. The bridge component has a distal end opposite the one of the either upper or lower joint components. The distal end of the bridge component comprises a connection component adapted to receive a fastener.
摘要:
An in-series, dual locking mechanism device for securing at least one implant having a clamp, a locking mechanism and a bone fastener. The clamp is configured to include a channel for receiving the implant and a locking mechanism. The locking mechanism is structured to secure the implant within the clamp by applying a force in at least two locations that are configured to be adjacent and in-series relative to each other. The locking mechanism functions to reduce the resultant internal stresses realized by the implant that may lead to implant fracture or fatigue. The implant is generally continuous and is preferably rod shaped. The shape of the implant thereby allowing it to be utilized in various surgical procedural applications. The clamp is further configured for the attachment of a bone fastener. The bone fastener functioning to rigidly fix the clamp to the bone.
摘要:
Devices and methods for attaching a support to the sacrum. One device may include first and second anchors that mount to the sacrum, and first and second lateral extensions coupled to the anchors to secure the device to the sacrum. A bearing face having a width is positioned between the lateral extensions. The face may have a height in an anterior-posterior direction greater than the spinous process of the sacrum. Further, the bearing face may be oriented in a superior direction when the device is mounted to the sacrum. An implant may be supported by the device to space the sacrum and L5 vertebrae. The implant may be an interspinous device and positioned between the L5 spinous process and the bearing face. The implant is supported at least in part by the bearing face.
摘要:
A method of injection molding an orthopedic device comprising: injection molding a polymeric orthopedic device having a length along a longitudinal axis; and deliberately inducing, in the device, a material property change along the longitudinal axis by varying a molding parameter during the injection molding. The material property may be, for example, elastic modulus and/or density. The molding parameter varied during the injection molding may be a supply material pressure. The orthopedic device may be an elongated rod-shaped element, such as a spinal fixation rod, which may or may not have a substantially uniform cross-section, and may or may not have a metallic core. A corresponding apparatus is also described.