摘要:
A method and apparatus for performing hip surgery utilize a preformed sleeve (30) formed of bone cement material and having apertures (33) which is positioned in the cavity. Fresh bone cement is injected under pressure to fill the femoral cavity including the apertures (33) and any spaces or voids between the preformed sleeve and the wall of the cavity. A femoral prosthesis (P) having a stem portion (24) is implanted therein. The interior wall of the sleeve (30) is larger than the stem exterior wall portion (24) encircled by the sleeve (30) such that fresh bone cement is between the interior wall of the sleeve (35) and the stem (24).
摘要:
Devices for imparting vibration to implanted devices to reduce accumulation of biofilm thereon including a vibration tip, the vibration tip being sized and shaped to couple to a vibrator and receive a vibration therefrom, wherein the vibration tip is sized and shaped to conduct the vibration from the vibrator to an implanted device are disclosed. Methods of inhibiting biofilm formation including abutting a vibration source against an implanted device, and activating the vibration source to impart vibration to the implanted device thereby inhibiting a formation of biofilm on the implanted device are also disclosed.
摘要:
The invention relates to a method for modification of a biocompatible component comprising the steps of a) providing a biocompatible component at least partly covered by metallic oxide; and b) treating at least a part of said component, which part is covered by said metallic oxide, with an aqueous composition comprising oxalic acid; whereby a modified metallic oxide is obtained. The invention also relates to a biocompatible component comprising a substrate having a surface comprising a) a microstructure comprising pits separated by plateus and/or ridges; and b) a primary nanostructure being superimposed on said microstructure, said primary nanostructure comprising depressions arranged in a wave-like formation.
摘要:
A generic bone implant, or set of standardized implants, is created based on using a guide device to develop an axis normal to an articular surface of bone and collecting only one or two data points. A generic cutting tool is used to cut the bone to a point where a generic implant can be used. Several improved tools relating to the procedure for using such an implant, as well as methods for using implants consistent with the invention are further described, including: single-axis and biaxial drill guide tools and methods, generic single-axis implant methods and devices, generic biaxial implant methods and devices, tools and methods for holding or delivering an implant, removal or revision tools and methods, digital measuring systems and methods, and set of measuring gauges for determining the appropriate implant dimensions.
摘要:
Die erfindungsgemässe Anordnung besteht aus einem metallischen Stent (3), als medizinisches Implantat zur Behandlung von Läsionen in Blutgefässen, und einer Verpackung (1), mit einem Innenvolumen, in welchem der Stent (3) geschützt angeordnet ist. Der Stent (3) hat eine Vielzahl von Stegen (33), die miteinander eine Röhrenform bilden, sowie ein proximales Ende (31) und ein distales Ende (32), zwischen denen sich ein Stentlumen (34) erstreckt. Die Stentoberfläche (35) besitzt eine hydrophile Eigenschaft. Die aus der Atmosphäre stammenden molekularen chemischen Verunreinigungen, vorrangig Kohlenwasserstoff-Verbindungen, sind auf der Oberfläche durch eine Behandlung signifikant reduziert, wodurch sich der Kontaktwinkel als Mass der Hydrophilizität eines an der Oberfläche (35) aufsitzenden Wassertropfens im Verhältnis zum Kontaktwinkel vor dieser Behandlung verringert. Der Stent (3) ist in der Verpackung (1) inert gelagert.
摘要:
A method of surface finishing a bone implant comprises the steps of roughening a surface of the implant by blasting with abrasive particles and then pickling the surface-roughened implant in a pickling solution in order to loosen any partially embedded abrasive blasting particles that may be contaminating the surface of the implant. Thereafter the roughened surface of the implant is cleaned by mechanical action to detach the loosened abrasive particles there from. The pickling and cleaning steps are not intended to produce any additional roughening of the treated surface, which should be structured to the required roughness by the initial abrasive blasting, typically such that the Ra and Rt roughness parameters are 3≤Ra≤7um and 20≤Rt≤70um respectively.
摘要:
L'invention concerne un dispositif formant endoprothèse comprenant une extrémité proximale et une extrémité distale, comprenant un moyen facilitant le passage du dispositif au travers d'un obstacle. L'invention concerne principalement un dispositif formant endoprothèse (10), comprenant une extrémité distale (10a) et une extrémité proximale (10b), comprenant au moins un moyen (11) facilitant le passage du dispositif dans un conduit, tel qu'un conduit sanguin ou un cathéter-guide, notamment au niveau d'un obstacle, par exemple une sténose ou l'extrémité d'un cathéter-guide. L'invention est notamment utilisable dans le domaine de la cardiologie interventionnelle et de la radiologie vasculaire.
摘要:
A method for implanting a prosthetic spinal disc nucleus in an intervertebral disc nucleus space includes: (a) providing a disc nucleus implant instrument having a passageway for passing a prosthetic disc nucleus, and a dilator for dilating an opening in a disc annulus; (b) providing a prosthetic disc nucleus having a first configuration and a second configuration, where the first configuration presents a first cross-sectional size and said second configuration presents a second cross-sectional size, with the first cross-sectional size being larger than the second cross-sectional size; (c) making a hole in the annulus of a disc receiving the prosthetic disc nucleus, with the hole having an undilated size that is smaller than the first cross-sectional size of said prosthetic disc nucleus; (d) providing the prosthetic disc nucleus in its second configuration in the passageway of said disc nucleus implant instrument; (e) introducing the dilator of the disc nucleus implant instrument into the hole in the disc annulus while said hole is not fully dilated; (f) causing the dilator to dilate the hole in the disc annulus; (g) passing the prosthetic disc nucleus through the dilator and into the disc nucleus space while the disc annulus is dilated and the prosthetic disc nucleus is in its second configuration; (h) withdrawing the disc nucleus implant instrument and allowing the disc annulus to return to a size smaller that its dilated size; and (i) causing or allowing the prosthetic disc nucleus to assume its first configuration. The disc nucleus implant instrument may also include an activator for causing the dilator to dilate.
摘要:
An open, seal-less intraocular lens is disclosed herein. An example intraocular lens may include an annular substrate (102) including an oil electrode (104) disposed in or on an inner sidewall of the annular substrate to electrostatically manipulate a volume of electrowetting oil, an optical window (106) coupled to the substrate, where a side of the optical window adjacent to the inner sidewall and the inner sidewall of the annular substrate define a region for constraining the volume of electrowetting oil, and a saline electrode (116) coupled to the annular substrate, the saline electrode positionable within an aqueous humor of an eye upon implantation.
摘要:
An attachment surface for an implantable device has an irregular pattern (46,47,45,44,40) formed through a process including masking, chemical or electrochemical etching, blasting and debris removal steps. Surface material is removed from the implant surface without stress on the adjoining material and the process provides fully dimensional fillet radii at the base of the surface irregularities. This irregular surface is adapted to receive the ingrowth of bone material and to provide a strong anchor for that bone material which is resistant to cracking or breaking. The surface is prepared through an etching process which utilizes the random application of a maskant and subsequent etching in areas unprotected by the maskant. This chemical etching process is repeated a number of times as necessitated by the nature of the irregularities required in the surface. The blasting and debris removal steps produce microfeatures (150) on the surface that enhance the ingrowth of bone material.