摘要:
A prosthetic patellar component includes a base and a bearing element that includes first and second femoral engaging surfaces disposed between first and second (superior/inferior) edge surfaces. The edge surfaces are curved to provide a gradual transition from a posterior facing portion to a nearly vertical superior or inferior facing portion. Moreover, the inferior-superior dimension of the component is at least approximately 90% of the medial-lateral dimension. The relative height and gradually transitioning edges significantly reduce the likelihood of sudden posterior rotation during deep flexion movement. The edge surfaces extend from a substantially posterior facing portion proximate to the first and second femoral engaging surfaces and a substantially vertical facing portion proximate the base. The curved edge surfaces can include a plurality of adjacent medial-laterally extending surface portions having angular displacement relative to an adjacent surface portion of less than 30 degrees in the anterior-posterior direction.
摘要:
A modular knee implant system allows a surgeon to select between several different styles of distal femoral implant components and several different styles of stem extensions while also allowing for use of a metaphyseal component. The metaphyseal component can be a universal one that is usable with all of the styles of distal femoral implant components through use of an adapter. A second adapter allows for use of stem extensions with different types of connectors with the metaphyseal component. A separate metaphyseal component could also be provided with a distal Morse taper post to mate with a distal femoral component having a proximal Morse taper bore. The metaphyseal component may have an outer surface that is configured to maximize contact area with the patient's bone, and may have a surface finish over a substantial part of its overall length that is conducive to bone ingrowth.
摘要:
There is disclosed in the specification a tire repair device and kit for inserting plugging material typically in the form of rubber coated twisted strands into a tire puncture. The device and kit is provided with one or more interchangeable tools such as a strand inserting needle, an awl, a knife, and screwdriver, said tools being interchangeably joinable with the handle of said device. In operation the awl is first joined with said handle and used to enlarge the puncture, if necessary. The inserting needle tool is then joined to the handle. The plug material is threaded into the open eye of the needle and inserted into the puncture. The inserting motion is limited by a stop bushing captive on said needle tool so that the ends of the strands are not drawn into the puncture. The stop also limits the withdrawal of the needle. After the strand has been inserted in accordance with the present invention the knife tool may then be attached to said handle and used to trim off any excess strand of material extending out of the puncture.
摘要:
A method for use with a simulation includes running the simulation, receiving information from a control interface used by a user to interact with the simulation, analyzing the received information, forming at least an indication of the user's level of skill based on the analysis of the received information, and adjusting a difficulty level of the simulation based on the indication of the user's level of skill. A storage medium storing a computer program executable by a processor based system and an apparatus for use with a simulation are also disclosed.
摘要:
Systems and methods of the present invention for maintaining network data distribution are provided. Network data may be distributed in such as manner as to allow a network session to weather interrupted communications between host and clients without significant loss of data. Embodiments of the present invention provide for one or more clients to serve as backup host(s) for the network session, such determinations including the use of NAT profile information. When the other clients transmit data to the host, they may also transmit the data to one or more backup hosts if there are any indications of interrupted communication.
摘要:
A distal femoral osteotomy system and method according to which an end segment is cut from the bone to be realigned and a wedge-shaped segment is cut from between the end segment and the remaining portion of the bone. The wedge-shaped segment is cut so that it has an angled surface substantially corresponding to the angle of malalignment. The wedge-shaped segment is discarded and the severed end segment is repositioned relative to the remaining portion of the bone at an angle corresponding to the angle of malalignment to realign the end segment and the remaining bone portion and correct for the malalignment. A compressive load is then established across the remaining bone portion and the end segment.
摘要:
An implantable orthopedic prosthesis has a macro/micro-textured bone and soft tissue attachment surface to which a spiked washer is clamped by a threaded bolt received through said washer and threaded into said prosthesis. Soft tissue is secured to the prosthesis by clamping between said washer and said soft tissue attachment surface. The tissue attachment surface is arranged as a regular grid of depressions separated by orthogonal ridges formed by electrodischarge machining of the prosthesis using a machining electrode having a mold-opposite surface texture with a micro-textured roughened surface finish. The spacing of the spikes is and integer multiple of the spacing of the depressions to assure registry of the spikes with the depressions.
摘要:
Methods, apparatuses, and techniques for adjustment of game parameters based on users' performance are described. During play of a game a user's performance is monitored. It is then determined if the player's performance is within a desired range of performance, and game parameters are adjusted if the user's performance is outside the desired range. In a multi-player game, parameters can be adjusted differently for each of the players to make the overall game play more competitive.
摘要:
A comprehensive modular implant system is provided that is especially adapted for limb preservation. The modular components of the system can be combined to perform proximal, distal, mid-shaft, or total long bone replacement. Each replacement component is connected by a Morse taper engagement. The Morse taper engagement can be augmented by interlocking anti-rotation features between adjacent components. Certain components are configured to form part of a skeletal joint, while other components are configured for engagement within existing portions of the long bone. A number of segmental components operate as spacers for spanning the length of a removed section of bone. Certain segmental components are provided in several lengths, with one group of lengths increasing in 5 mm increments. Combinations of the segmental components can accommodate replacement lengths from 25 mm to 170 mm in 5 mm increments.
摘要:
A ratcheting strut comprising: (a) a ratchet box including a through passage; (b) a first tube sized to extend at least partially through the passage, the first tube including ratchet teeth that engage corresponding ratchet teeth of the ratchet box; (c) a second tube mounted to the ratchet box in parallel with the first tube, the second tube operatively coupled to a second fixation adapter; and (d) a threaded rod operatively coupled to a nut and a first fixation adapter, the threaded rod repositionably mounted to the first tube, where the nut is operatively coupled and repositionable with respect to the first tube.