摘要:
A medical prosthesis for use within the body which is formed of ultra high molecular weight polyethylene which has a polymeric structure with less than about 50% crystallinity, less than about 290 .ANG. lamellar thickness and less than about 940 MPa tensile elastic modulus, so as to reduce production of fine particles from the prosthesis during wear of the prosthesis, is described. Methods of manufacture of such devices and material used therein are also provided.
摘要:
A motivational savings bank set, the motivational savings bank set including a savings bank, the savings bank including a plurality of separate and discrete chambers, the chambers being of sequential, ordered, and ascending vertical heights, each of the chambers having indicia provided thereon, the indicia on the chambers indicating a plurality of sequential, ordered, and ascending levels of achievement corresponding to the sequential, ordered, and ascending vertical heights of the chambers, all but one of the chambers having an associated insertion slot and the shortest of the chambers lacking an insertion slot, and a plurality of tokens, each of the tokens bearing indicia thereon indicating a denomination, and the indicia on the tokens being of ascending denominations.
摘要:
Apparatus and method for polymerizing cement under pressurized conditions and for applying the cement under pressure at the appropriate time to a human bone cavity for implantation of a prosthesis, including a stemmed femoral component and an acetabular component. This apparatus alters the physical conditions under which bone cement cures, causing a decrease in cement porosity and thus increasing the resultant cement strength. The apparatus includes a pneumatically actuated gun having a piston for applying pressure to the cement, and applying cement to the bone, a pressurizable housing securable to the gun for containing the cement, and a nozzle having a valve which allows the cement to remain pressurized until application thereof through the nozzle. In one embodiment, one component of a two component polymerizable cement is provided in a sealed bladder secured to the nozzle while the other component is injected into the bladder and mixed with the first component when the cement is ready for use. A vent may be provided in the piston of the pneumatic gun to allow air to escape through the piston to prevent the injection of air into the cement. A sealing gasket may be provided on the end of the nozzle for placement over the open end of the bone cavity so that cement can be applied thereto under pressure.
摘要:
A medical prosthesis for use within the body which is formed of radiation treated ultra high molecular weight polyethylene having substantially no detectable free radicals, is described. Preferred prostheses exhibit reduced production of particles from the prosthesis during wear of the prosthesis, and are substantially oxidation resistant. Methods of manufacture of such devices and material used therein are also provided.
摘要:
A medical prosthesis for use within the body which is formed of radiation treated ultra high molecular weight polyethylene having substantially no detectable free radicals, is described. Preferred prostheses exhibit reduced production of particles from the prosthesis during wear of the prosthesis, and are substantially oxidation resistant. Methods of manufacture of such devices and material used therein are also provided.
摘要:
A method, apparatus and system of dispute resolution in a geo-spatial environment are disclosed. In one embodiment, a method includes providing a wiki interface such that users modify and add profiles of others prior to the profiles being claimed, permitting an initial claimant to control editability of a wiki portion of a selected profile when the initial claimant claims the selected profile, capturing what personally identifiable information the initial claimant is willing to submit if the selected profile is disputed, placing the selected profile in dispute when a disputing claimant challenges an ownership of the selected profile by the initial claimant, electing a dispute resolution process that communication a code through a direct mail mechanism to a physical address associated with the selected profile, and allocating the selected profile to one of the initial claimant and the disputing claimant based on entry of the code in the selected profile.
摘要:
A method, apparatus and system of youth communities in a geo-spatial environment are disclosed. In one embodiment, a method includes generating a set of user profiles above a general mapping environment, determining that one of the set of user profiles in a guardian profile through a verification technique, creating a dependent profile in a youth mapping environment when a guardian user associated with the guardian profile elects to allow a dependent user to create the dependent profile in the youth mapping environment, restricting access of the dependent user in the youth mapping environment based on a set of permissions granted by the guardian user and simultaneously visualizing the dependent profile based on a location data associated with the dependent profile along with adjacent dependent profiles having adjacent location data to the location data.
摘要:
The present invention provides monopolar acetabular liners that can enclose a femoral head to form a hip replacement prosthesis, wherein the liner has a rim that creates an orifice, wherein the orifice has a diameter that is smaller than the diameter of the femoral head, and wherein the liner encompasses greater than 50 percent of the volume of the head, wherein a constraining ring can be used in conjunction with the monopolar constrained acetabular liner to provide additional support for the femoral head to stay with the acetabular liner and avoid dislocation. Assemblies, complete prosthetic replacements, and methods of replacing also are provided. Liners and constraining rings having no, one or more recesses also are provided.
摘要:
A medical prosthesis for use within the body which is formed of radiation treated ultra high molecular weight polyethylene having substantially no detectable free radicals, is described. Preferred prostheses exhibit reduced production of particles from the prosthesis during wear of the prosthesis, and are substantially oxidation resistant. Methods of manufacture of such devices and material used therein are also provided.