摘要:
The present invention generally provides implantable articles and methods of forming implantable articles from a crosslinked ultrahigh molecular weight polyethylene (“UHMWPE”) blend stabilized with Vitamin E. The crosslinked UHMWPE blend may be prepared by combining the UHMWPE material and vitamin E prior to irradiating the UHMWPE blend with electron beam radiation at a sufficient radiation dose rate to induce crosslinking. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements.
摘要:
The present invention generally provides implantable articles and methods of forming implantable articles from a crosslinked ultrahigh molecular weight polyethylene (“UHMWPE”) blend stabilized with Vitamin E. The crosslinked UHMWPE blend may be prepared by combining the UHMWPE material and vitamin E prior to irradiating the UHMWPE blend with electron beam radiation at a sufficient radiation dose rate to induce crosslinking. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements.
摘要:
The present invention generally provides implantable articles and methods of forming implantable articles from a crosslinked ultrahigh molecular weight polyethylene (“UHMWPE”) blend stabilized with Vitamin E. The crosslinked UHMWPE blend may be prepared by combining the UHMWPE material and vitamin E prior to irradiating the UHMWPE blend with electron beam radiation at a sufficient radiation dose rate to induce crosslinking. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements
摘要:
The present invention provides methods of making covalently crosslinked vinyl polymer hydrogels having advantageous physical properties, and covalently crosslinked vinyl polymer hydrogel compositions made by such methods, as well as articles of manufacture comprising such covalently crosslinked vinyl polymer hydrogel compositions. The physical properties of the produced hydrogels can be adjusted by varying controlled parameters such as the proportion of physical associations, the concentration of polymer and the amount of radiation applied. Such covalently crosslinked vinyl polymer hydrogels can be made translucent, preferably transparent, or opaque depending on the processing conditions. The stability of the physical properties of the produced vinyl polymer hydrogel can be enhanced by controlling the amount of covalent crosslinks.
摘要:
A textile material (21, 21′) comprising a textile substrate (22, 22′) has, at least on part of the surface of the textile substrate (22, 22′), a coating (24, 24′) that contains at least one compound chosen from the group composed of hydrogels, except keratin hydrogels, of polyurethanes, polyvinyl chloride, polytetrafluoroethylene and any desired combinations of two or more of the aforementioned compounds. This textile material (21, 21′) can be used particularly as a substance for an artificial intervertebral disc (16″, 16′″), as a replacement for the nucleus pulposus (16′, 16″), cage (16, 16′), vertebral body implant (16″″), articular surface substitute, or as a tube (18, 18′, 18′, 18″) in vertebroplasty or nucleoplasty.
摘要:
The present disclosure describes numerous example medical instruments that include an elongated portion having a proximal end and a distal end, and a passage defined therethrough and a soft tip coupled to the distal end of the elongated portion. The tip may be formed from a soft material. In some instances, the soft material may have a hardness less than the material forming the elongated portion. The tip may also include a passage that may be of a substantially equivalent size as the passage of the elongated portion. The tip may be coupled to the distal end of the elongated portion at an engagement site having a surface area greater than a cross-sectional area of the elongated portion.
摘要:
The present invention generally provides implantable articles and methods of forming implantable articles from a crosslinked ultrahigh molecular weight polyethylene (“UHMWPE”) blend stabilized with Vitamin E. The crosslinked UHMWPE blend may be prepared by combining the UHMWPE material and vitamin E prior to irradiating the UHMWPE blend with electron beam radiation at a sufficient radiation dose rate to induce crosslinking. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements.
摘要:
The present invention generally provides implantable articles and methods of forming implantable articles from a crosslinked ultrahigh molecular weight polyethylene (“UHMWPE”) blend stabilized with Vitamin E. The crosslinked UHMWPE blend may be prepared by combining the UHMWPE material and vitamin E prior to irradiating the UHMWPE blend with electron beam radiation at a sufficient radiation dose rate to induce crosslinking. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements.
摘要:
An ophthalmoscopic surgical contact lens for placement on an eye of a patient is disclosed. The surgical contact lens includes an optic surrounded by a rim and at least one flange. The optic includes an aspheric anterior surface and a posterior surface having a shape substantially corresponding to the shape of a human cornea. The rim, comprising an edge surrounding the optic, provides the user with a gripping surface conducive to manual positioning and repositioning of the lens against a human eye. The flange may include a plurality of tabs extending from a periphery of the flange, wherein each tab is shaped and configured to conform to the curvature of a human sclera. Various embodiments of the contact lenses disclosed herein facilitate the visualization of structures within the interior of an eye, such as may be necessary during vitreoretinal surgical procedures.
摘要:
The present disclosure describes numerous example medical instruments that include an elongated portion having a proximal end and a distal end, and a passage defined therethrough and a soft tip coupled to the distal end of the elongated portion. The tip may be formed from a soft material. In some instances, the soft material may have a hardness less than the material forming the elongated portion. The tip may also include a passage that may be of a substantially equivalent size as the passage of the elongated portion. The tip may be coupled to the distal end of the elongated portion at an engagement site having a surface area greater than a cross-sectional area of the elongated portion.