Source: http://www.google.es/patents/US5911758?hl=es&dq=flatulence
Timestamp: 2013-05-19 16:35:31
Document Index: 702596273

Matched Legal Cases: ['art.\n8', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4']

Patente US5911758 - Tibia platform for a knee joint prosthesis and knee joint prosthesis with ... - Google PatentesB�squeda Im�genes Maps Play YouTube Noticias Gmail Drive M�s » B�squeda avanzada de patentes | Historial web | Iniciar sesi�n B�squeda avanzada de patentesPatentesThe tibia platform (1) contains a joint support (5) and an anchoring part (4) with passage openings (12) for fastening elements (14) for fastening the anchoring part (4) to the tibia bone (3). The passage openings (12) are each executed with a femur-side, upper countersink (25). At least one passage...http://www.google.es/patents/US5911758?utm_source=gb-gplus-sharePatente US5911758 - Tibia platform for a knee joint prosthesis and knee joint prosthesis with such a tibia platform N�mero de publicaci�nUS5911758 ATipo de publicaci�nConcesi�n N�mero de solicitud08/667,922 Fecha de publicaci�n15 Jun 1999 Fecha de presentaci�n20 Jun 1996 Fecha de prioridad21 Jun 1995Tambi�n publicado comoEP0749733A1EP0749733B1 InventoresKurt BiderNikolaus BohlerJurg OehyMartin SchochWolfgang Schwagerl Cesionario originalSulzer Orthopaedie Ag Clasificaci�n de EE.UU.623/20.32 Clasificaci�n internacionalA61F2/30A61F2/46A61F2/38A61B17/86A61F2/00 Clasificaci�n cooperativaA61F2/30744A61F2310/00023A61F2002/30797A61F2/389A61F2002/30682A61F2002/464A61B17/86A61F2002/305A61F2002/30846A61F2002/30772A61F2220/0025 Clasificaci�n europeaA61F 2/38TA61F 2/30B9ReferenciasCitas de patentes (10) Citada por (10)Enlaces externosUSPTO Cesi�n de USPTO EspacenetTibia platform for a knee joint prosthesis and knee joint prosthesis with such a tibia platformUS 5911758 A Resumen The tibia platform (1) contains a joint support (5) and an anchoring part (4) with passage openings (12) for fastening elements (14) for fastening the anchoring part (4) to the tibia bone (3). The passage openings (12) are each executed with a femur-side, upper countersink (25). At least one passage opening (12) not used for the fastening is provided with a closure plug (15) which can be inserted from above, which is executed with a supporting surface (16a) running around this sealing surface (16a) and can be braced in the countersink (25). The closure plug (15) contains a number of spring tongues (18) which can be introduced into the relevant passage opening (12) and which form a snap connection with the wall of the passage opening (12), and a central cylindrical protusion (17) which is provided with a blind bore (17a) open upwards for receiving a setting tool (20). In this manner a secure sealing of the passage opening (12) is attained and the movement into the tibia bone bed of abraded particles possibly originating between the anchoring part (4) and the joint support (5) is prevented.
We claim: 1. A closure plug for fastening over unused passage openings for a knee joint prosthesis fastened to a tibia bone wherein the knee joint prosthesis includes, an anchoring part, a plurality of passage openings defined in the anchoring part for receiving a fastening element for fastening the anchoring part into the tibia bone on a tibia side of the anchoring part, the anchoring part at each of the passage openings constructed with a countersink defining a recessed receptacle surrounding the passage openings on a femur side of the anchoring part, the closure plug for one of the plurality of openings comprising: a closure plug for insertion from the femur side; a sealing surface defined at a top of the closure plug which can be inserted in the countersink so as to seat at the recessed receptacle around the countersink to seal off the passage opening; and, a plurality of spring tongues which can be inserted into the passage openings having interfering snap connections with a wall of the passage opening for holding the closure plug to the countersink when the countersink is not occupied by a fastening element.
2. A closure plug for fastening over unused passage openings for a knee joint prosthesis according to claim 1 and wherein: the closure plug has a cylindrical central raised portion placed at a distance from the spring tongues protruding from the tibia side of the anchoring part; and, the cylindrical central raised portion defines a blind bore open towards the femur side for receiving a setting tool.
3. A closure plug for fastening over unused passage openings for a knee joint prosthesis according to claim 2 and wherein: the blind bore is provided with threading.
4. A closure plug for fastening over unused passage openings for a knee joint prosthesis according to claim 1 and wherein: the spring tongues are formed of lug-like wall sections protruding from the sealing surface toward the tibia side and moveable relative to one another.
5. A knee joint prosthesis adapted to be fastened to a tibia bone comprising: an anchoring part fastened to a body of the knee joint prosthesis; a plurality of passage openings defined in the anchoring part for receiving a fastening element for fastening the anchoring part into the tibia bone, at least one fastening element for fastening the anchoring part of the knee joint prosthesis to the tibia bone; the anchoring part at the passage openings constructed with a first countersink defining a recessed receptacle surrounding the passage openings on a femur side of the anchoring part opening to a tibia side of the anchoring part; at least one closure plug for insertion from the femur side; a sealing surface defined at a top of the closure plug which can be inserted in the countersink so as to seat at the recessed receptacle around the countersink to seal off the passage opening; and, a plurality of spring tongues which can be inserted into the passage openings having interfering snap connections with a wall of the passage opening for holding the closure plug to the countersink when the countersink is not occupied by a fastening element.
6. A knee joint prosthesis is adapted to be fastened to a tibia bone according to claim 5 further comprising: the recessed receptacle has a form of a dome with a spherical surface; and, the closure plug has a form of a dome with a corresponding spherical surface.
7. A knee joint prosthesis adapted to be fastened to a tibia bone according to claim 5 further comprising: each of the passage openings of the anchoring part is constructed with a second countersink formed at the tibia side of the anchoring part so as to define with the first countersink a locally narrowed peripheral part of the passage opening; the spring tongues of the closure plug are each constructed with an end section which can be inserted into the second countersink with a depression corresponding to the narrowed peripheral part.
8. A knee joint prosthesis adapted to be fastened to a tibia bone according to claim 5 further comprising: the passage openings are formed with a tibia side protrusion from the anchoring part for introduction to the tibia bone; the tibia side protrusion bounds an edge portion of the passage openings in a manner of a cutting edge; and, the closure plug is configured to be held at a distance from this edge portion to allow penetration of the edge portion into the tibia bone.
DESCRIPTION OF THE PREFERRED EMBODIMENT The knee joint prosthesis in FIGS. 1 and 2 contains a tibia platform 1 and an anchoring part 4 of metal, e.g. titanium, which can be placed onto a resection surface 2 of tibia bone 3 and which surrounds a joint support 5 of a plastic, e.g. polyethylene, which can be placed upon a supporting surface 4a of the anchoring part 4 and can be latched to this anchoring part 4. The anchoring part 4 is executed with a central pin 6 which can be introduced into a recess of the tibia bone 3 and with two annular projections 7 which can be introduced into corresponding recesses of the tibia bone 3, each projection 7 being provided with a passage opening 12 passing through the anchoring part 4. The passage openings 12 are each suitable for or provided for receiving a fastening element 14 of an arbitrary type which can be anchored in the tibia bone 3, and which is shown in the form of a bone screw which can be screwed into the bone tissue. In the example shown a single fastening element 14 is provided for fastening the anchoring part 4 at the tibia bone 3 and serves principally for the primary stable fastening of the anchoring part 4 at the resection surface 2. The passage opening 12 not used for the fastening of the anchoring part 4 is provided with a closure plug 15 which can be inserted and fixed from above, from the femur side.
BRIEF DESCRIPTION OF THE DRAWING A closure plug for a tibia platform in accordance with the invention is the subject of claim 9.
BACKGROUND OF THE INVENTION Furthermore the invention relates to a knee joint prosthesis executed with such a tibia platform as well as a closure plug for such a tibia platform.
SUMMARY OF THE INVENTION The object of the invention is to provide a tibia platform improved in particular in this respect, which permits a simple adaptation of the fastening arrangement to the given anatomical conditions with low cost and complexity during preparation of the tibia bone, and which at the same time ensures a secure screening of the bone tissue against undesired contact with abraded particles.
Citas de patentes Patente citada Fecha de presentaci�n Fecha de publicaci�n Solicitante T�tuloUS438892122 May 198121 Jun 1983Institut Straumann AgDevice comprising a plate and screws for fastening a plate to a boneUS448457022 May 198127 Nov 1984Synthes Ltd.Device comprising an implant and screws for fastening said implant to a bone, and a device for connecting two separated pieces of boneUS50191035 Feb 199028 May 1991Boehringer Mannheim CorporationTibial wedge systemUS507487926 Oct 199024 Dic 1991Buechel; Frederick F.Prosthetic device with modular stemUS524645924 Feb 199221 Sep 1993Elias; Sarmed G.Modular tibial support pegs for the tibial component of a prosthetic knee replacement systemUS533053522 Abr 199319 Jul 1994Protek AgScrew-nut for screwing implants togetherEP0170779A14 Abr 198512 Feb 1986Gebr�der Sulzer AktiengesellschaftPlug-like anchoring for the cement-free fixation of bone implantsEP0495340A113 Dic 199122 Jul 1992Gebr�der Sulzer AktiengesellschaftModular construction kit for the tibial part of a knee joint prosthesisEP0502815A15 Feb 19929 Sep 1992Protek AgNut for threaded connection in an implantGB1057763A T�tulo no disponible Citada por Patente citante Fecha de presentaci�n Fecha de publicaci�n Solicitante T�tuloUS612054621 Ene 199919 Sep 2000Sulzer Orthopedics Inc.Implantable prosthesis having spring-engaged hole plugsUS641325914 Dic 20002 Jul 2002Blackstone Medical, IncBone plate assembly including a screw retaining memberUS710502610 Dic 200412 Sep 2006Zimmer Technology, Inc.Modular knee prosthesisUS715076123 May 200319 Dic 2006Medicinelodge, Inc.Modular femoral components for knee arthroplastyUS729716416 Ago 200520 Nov 2007Zimmer Technology, Inc.Modular knee prosthesisUS752765011 Oct 20075 May 2009Zimmer Technology, Inc.Modular knee prosthesisUS761508123 May 200310 Nov 2009Zimmer, Inc.Femoral components for knee arthroplastyUS804816322 Ago 20051 Nov 2011Zimmer, Inc.Knee arthroplasty prosthesisUS809254522 Ago 200510 Ene 2012Zimmer, Inc.Knee arthroplasty prosthesis methodUS809254622 Ago 200510 Ene 2012Zimmer, Inc.Knee arthroplasty prosthesisGirarImagen originalP�gina principal de Google - Sitemap - Descargas masivas de USPTO - Pol�tica de privacidad - Condiciones de servicio - Acerca de Google Patentes - Danos tu opini�nDatos proporcionados por IFI CLAIMS Patent Services©2012 Google