Source: http://www.google.de/patents/US8048163
Timestamp: 2013-05-25 07:01:14
Document Index: 201022826

Matched Legal Cases: ['application No. 2003217551', 'application No. 2', 'application No. 2003217551', 'application No. 2003', 'application No. 2', 'Application No. 03713503']

Patent US8048163 - Knee arthroplasty prosthesis - Google PatenteSuche Bilder Maps Play YouTube News Gmail Drive Mehr » Erweiterte Patentsuche | Webprotokoll | Anmelden Erweiterte Patentsuche PatenteA knee arthroplasty prosthesis includes a femoral component having multiple pieces with engagement means provided for engaging various pieces of the femoral component to one another following their insertion in the incised area of the femur. A tibial component includes multiple pieces designed for assembly...http://www.google.de/patents/US8048163?utm_source=gb-gplus-sharePatent US8048163 - Knee arthroplasty prosthesis Ver�ffentlichungsnummerUS8048163 B2PublikationstypErteilung Anmeldenummer11/209,930 Ver�ffentlichungsdatum1. Nov. 2011Eingetragen22. Aug. 2005 Priorit�tsdatum20. Febr. 2002Auch ver�ffentlicht unterUS8092545US8092546US20050283250US20050283251US20050283252US20120083893 ErfinderThomas M. CoonDonald M. SmuckerJR. Alfred J. TriaRichard R. Van ZileUrspr�nglich Bevollm�chtigterZimmer, Inc.Nemcomed Ltd. US-Klassifikation623/20.15623/20.27623/20.35Internationale KlassifikationA61F2/00A61F2/38A61F2/30A61F2/46A61L27/00 UnternehmensklassifikationA61F2002/30332A61F2002/30515A61F2002/30616A61F2002/30975A61F2002/30822A61F2002/30708A61F2002/30878A61F2/389A61F2002/4638A61F2002/30387A61F2002/30344A61F2002/30884A61F2/30744A61F2002/4631A61F2220/0025A61F2002/30892A61F2002/30794A61F2220/0033A61F2002/30492A61F2002/30433A61F2/3859A61F2/38A61F2002/30604A61F2002/30434A61F2002/30382A61F2002/30405A61F2220/0041A61F2/4637A61F2002/30797A61F2250/0084 Europ�ische KlassifikationA61F 2/46FA61F 2/38A61F 2/38TReferenzenPatentzitate (192)Nichtpatentzitate (67) Referenziert von (1)Externe LinksUSPTO USPTO-Zuordnung EspacenetKnee arthroplasty prosthesisUS 8048163 B2 Zusammenfassung A knee arthroplasty prosthesis includes a femoral component having multiple pieces with engagement means provided for engaging various pieces of the femoral component to one another following their insertion in the incised area of the femur. A tibial component includes multiple pieces designed for assembly following positioning in the incision. The tibial component includes a Morse taper cavity on one piece of the tibial component and a Morse taper extension on another member of the component for receipt therein.
1. A femoral component for knee arthroplasty in a knee having a natural patella or a prosthetic patella comprising:
(a) a first piece having a patellar femoral flange portion including an articulating surface for engagement by said patella, said first piece extending from an anterior end toward a posterior end and having one or more engagement surfaces defining one side of a joint, said first piece including a central surface extending laterally and first and second side engagement surfaces extending from said central surface angularly away from each other in a direction toward said anterior end;
(b) a second piece defining first and second condylar portions and having an articulating surface, said second piece extending from said posterior end toward said anterior end and having one or more abutment surfaces cooperating with said engagement surfaces to define said joint;
(c) at least one laterally extending cross member located adjacent said abutment surfaces and connecting said first condylar portion to said second condylar portion, said cross member has (i) a medial surface spaced from said condylar portion articulating surface, (ii) an opposed bone engaging surface, and (iii) a leading surface facing said first piece and extending between said medial surface and said bone engaging surface and wherein said first piece includes a ledge extending anteriorly from said central surface, said ledge engaged to said medial surface of said cross member;
(d) a posterior cam located adjacent said posterior end and connecting said first condylar portion to said second condylar portion; and
(e) a fastener for securing said first piece and said second piece together such that said posterior cam is spaced apart and separate from said first piece.
2. The femoral component of claim 1 wherein said first piece comprises a first aperture and said second piece comprises a second aperture, said fastener fittable through said first aperture and said second aperture to secure said first piece to said second piece.
3. The femoral component of claim 1 wherein said first and second side engagement surfaces of said first piece define curved engagement surfaces following a contour for mating engagement with said abutment surfaces of said second piece.
4. The femoral component of claim 1 wherein said abutment surfaces and said engagement surfaces define a recessed joint. Beschreibung
CROSS REFERENCE TO RELATED APPLICATION This patent application is a divisional of U.S. patent application Ser. No. 10/370,154, filed Feb. 19, 2003 (now abandoned), and claims the benefit under 35 U.S.C. �119(e) of provisional application U.S. Provisional Patent Application Ser. No. 60/358,174, filed Feb. 20, 2002.
BACKGROUND OF THE INVENTION In performing knee arthroplasty with conventional knee prostheses, it has been necessary to form large incisions in order to accommodate the preparation of the femur to receive the prosthesis and to accommodate the reception of a fairly large prosthesis into the incised femur for implantation on the prepared distal end of the femur. As is appreciated by those skilled in the art, it is desirable to minimize the size of any incision as the smaller the incision, the more rapidly the patient may recover. Prior art prostheses formed with a single piece metal component having both left and right condylar portions integral with the patellar flange area require large incisions in order to accommodate implantation in the prepared femur. In contrast, under the present invention, through the use of multiple pieces for the femoral component, it is possible to greatly reduce the size of any such incision, thereby reducing the amount of damage to soft tissue from any such arthroplasty and speeding the time of recovery. Similarly, it is desirable to minimize the size of any incision In the tibia during any implantation of the tibial component.
SUMMARY OF THE INVENTION The present invention is directed to a prosthesis for use in knee arthroplasty including total knee arthroplasty which is minimally invasive to the patient and to a method for performing surgery using such prosthesis including the femoral and tibial components thereof. Under the invention, the femoral component and, preferably, the tibial component are manufactured in at least two and possibly three or more pieces. However, it is possible that the tibial component could be a single piece, monoblock construction as well as modular multipiece construction. In both the single piece and multipiece construction, there is also provided a plastic articular surface insert piece. The pieces are designed to be assembled together following insertion into the knee. This allows total knee arthroplasty to be performed through very small incisions, as small as three inches, in each of the distal end of the femur and proximal end of the tibia. Following insertion, the pieces of the femoral component implanted at the distal end of the femur are joined together with a locking mechanism to form the modular femoral component and the pieces of the tibial component implanted at the proximal end of the tibia are assembled to form the modular tibial component.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of one embodiment of femoral component showing the medial condyle as a separate piece from the remainder of the femoral component.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIG. 1, there is shown one embodiment of femoral component generally designated by the numeral 10. The femoral component includes a first piece 12 having a patellar flange portion 14 and an integral, unitary lateral condyle portion 16 extending therefrom. A prior art femoral component would also have an integral, unitary medial condyle on the opposite side from the lateral condyle portion 16. Under the present invention, there is provided, as a separate piece, a medial condyle piece 18 intended to be assembled to the first piece 12 following implantation of both the first piece 12 and the medial condyle piece 18 in the patient. The assembly mechanism or locking joint for securing the medial condyle piece 18 to the first piece 12 will be hereinafter described.
Preparatory to implantation of the condylar member 42B and patellar femoral flange piece 418, an aperture is drilled or otherwise formed in the femur of sufficient size to receive the extensions 130 and 134.
The first piece 141 is provided with an abutment wall 146 having a contour to be snuggly engaged to the abutment wall 145 of the second piece 144. As such, the abutment wall 146 includes, a tongue 147 contoured to fit snuggly in the groove defined by sidewalls 145C and bottom wall 145D of the second piece 144. The tongue 147 is defined by sidewalls 146C, 146C and an end wall 146D contoured to snuggly engaged the wall 145D forming the bottom of the groove of the second piece 144. The walls 146C, 146C taper inwardly toward one another as they extend toward the wall 146D and snuggly engage the tapered sidewalls 145C of the second piece 144.
A threaded passageway 172 is formed in the Morse taper extension 298 and is aligned with the central passageway 170 when the tibial stem 163 is engaged to the extension 165. The tibial stem 163 is supported on the tibial base 162 by the screw 158 extending through the central passageway 170 of the tibial base 162 and engaged to the threaded passageway 172. A plug 244 is engaged in the distal end of the tibial stem 163 to prevent blood or, other contaminates from entering the threaded passageway 172. The plug 244 may be secured to the tibial stem 163 by means of a threaded extension engaging the threaded passageway 172.
Extending distally from the inferior surface 183 is an extension 187. The tibial base 181 has a central passageway 188 extending from the superior surface 184 and through the extension 187. The extension 187 and the passageway 188 may be disposed at an angle of up to 100 relative to a line perpendicular to the superior surface 184 in order to accommodate the anatomy of the patient.
In preparing the proximal end of the tibia T to receive the tibial component 180, the proximal end T1 of the tibia is cut to form substantially a flat surface. A cavity T2 is formed to receive the tibial stem 182. Since the cavity T2 may be oversized, the tibial stem 182 is provided with an annular groove 198 sized to receive the tines 195A of the tool 195. As can be seen in FIG. 21, with the lines 195A engaged in the groove 198, the tool 195 can support the tibial stem 182 at the proper location relative to the prepared proximal end T1 of the tibia T until such time as the screw 196 is engaged in the threaded recess 190 to support such tibial stem 182 on the tibial base 181.
An extramedullary tibial alignment guide is placed along the medial or lateral half of the tibia and secured with fixation pins. An extrameduallary alignment guide of the type disclosed in application Ser. No. 09/973,584 filed Oct. 9, 2001, assigned to the assignee of the present invention and incorporated herein by reference, is fixed to the femur after performing the extramedullary alignment procedure, and the distal femoral cut is made at the appropriate depth and angle of the implant, nominally 60� valgus and 10-12 mm depth of cut. As an alternative, an intramedullar alignment guide system could be used. This cut is taken all the way across both distal femoral condyles, rather than being unicondylar in nature. This cut is made at 90� to the femoral shaft.
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Dec. 1997, pp. 44-52.5Abstract-Trabecular bone strength patterns at the proximal tibial epiphysis; Dr. Ivan Hvid, et al., Journal of Orthopaedic Research, vol. 3, Issue 4, pp. 464-472.6Abstract�Trabecular bone strength patterns at the proximal tibial epiphysis; Dr. Ivan Hvid, et al., Journal of Orthopaedic Research, vol. 3, Issue 4, pp. 464-472.7Advisory Action mailed Nov. 29, 2005 in related U.S. Appl. No. 10/370,154.8AGC Total Knee System; Patellar Femoral Systems; Biomet Inc.9Brochure-Zimmer NexGen MIS Tibial Component, 97-5950-001-00 7.5mm, 2005, 2006.10Brochure�Zimmer NexGen MIS Tibial Component, 97-5950-001-00 7.5mm, 2005, 2006.11Brochure-Zimmer NexGen System, Complete Knee Solution, Implant Options-Surgeon-Specific.12Brochure�Zimmer NexGen System, Complete Knee Solution, Implant Options�Surgeon-Specific.13Election filed Apr. 28, 2009 in related U.S. Appl. No. 11/209,931.14Election filed Apr. 28, 2009 in related U.S. Appl. No. 11/209,932.15European Search Report from PCT/US03/04750 which corresponds to this U.S. application.16Extended European Search Report mailed Jul. 13, 2011 in related European Patent Application No. EP11166282.1.17Final Office Action mailed Aug. 17, 2006 in related U.S. Appl. No. 10/370,154.18Final Office Action mailed Aug. 5, 2005 in related U.S. Appl. No. 10/370,154.19Final Office Action mailed Feb. 25, 2010 in related U.S. Appl. No. 11/209,931.20Final Office Action mailed May 7, 2010 in related U.S. Appl. No. 11/209,932.21Geometric Total Knee; A-97-A-100.22International Preliminary Examination Report mailed Apr. 26, 2004 in related International application No. PCT/US2003/04750.23International Search Report mailed Jul. 8, 2003 in related International Application No. PCT/US2003/04750.24Knee Systems; Insall/Burstein II* Modular Knee System; A 168-A 170.25Miller/Galante; Unicompartmental Knee System Implants and Instrumentation; Zimmer.26Office Action mailed Apr. 30, 2007 in related Australian application No. 2003217551.27Office Action mailed Apr. 5, 2007 in related Canadian application No. 2,475,078.28Office Action mailed Dec. 11, 2007 in related Australian application No. 2003217551.29Office Action mailed Feb. 17, 2006 in related U.S. Appl. No. 10/370,154.30Office Action mailed Jan. 5, 2010 in related U.S. Appl. No. 11/308,932.31Office Action mailed Jan. 7, 2008 in related Japanese application No. 2003-569089.32Office Action mailed Jun. 30, 2009 in related U.S. Appl. No. 11/209,931.33Office Action mailed Jun. 30, 2009 in related U.S. Appl. No. 11/308,932.34Office Action mailed Mar. 1, 2005 in related U.S. Appl. No. 10/370,154.35Office Action mailed Oct. 7, 2008 in related U.S. Appl. No. 11/209,933.36P.F.C. Total Knee System; Johnson & Johnson Orthopaedics Implants.37P.F.C. Total Knee System; Johnson & Johnson Orthopaedics; Tibial Component.38Patellar Resurfacing with Specialist Instruments in Total Knee Arthroplasty; Surgical Technique; Technique and Instruments Developed in Conjunction with James A. Rand, M.D., Mayo Clinic; Johnson & Johnson Orthopaedics.39Product Brochure-ADVANTIM Total Knee System, Wright Medical Technology, 1996.40Product Brochure�ADVANTIM Total Knee System, Wright Medical Technology, 1996.41Product Brochure-MAXIM The Complete Knee System, Biomet, 1995.42Product Brochure�MAXIM The Complete Knee System, Biomet, 1995.43Product Brochure-Whiteside Ortholoc Modular Knee System; Total Condylar, Dow Corning 1989.44Product Brochure�Whiteside Ortholoc Modular Knee System; Total Condylar, Dow Corning 1989.45Product Brochure-Zimmer Natural Knee II System, Zimmer 2005.46Product Brochure�Zimmer Natural Knee II System, Zimmer 2005.47Response and RCE filed Dec. 16, 2005 to the Office Action mailed Feb. 17, 2006 in related U.S. Appl. No. 10/370,154.48Response filed Feb. 4, 2010 in related U.S. Appl. No. 11/308,932.49Response filed Jul. 5, 2006 to the Final Office Action mailed Aug. 17, 2006 in related U.S. Appl. No. 10/370,154.50Response filed May 31, 2005 to the Office Action mailed Mar. 1, 2005 in related U.S. Appl. No. 10/370,154.51Response filed Nov. 4, 2005 to the Final Office Action mailed Aug. 5, 2005 in related U.S. Appl. No. 10/370,154.52Response filed Oct. 5, 2007 to the Office Action mailed Apr. 5, 2007 in related Canadian application No. 2,475,078.53Response filed Oct. 9, 2009 to the Office Action mailed Jun. 30, 2009 in related U.S. Appl. No. 11/308,932.54Response filed Sep. 9, 2010 in related U.S. Appl. No. 11/209,932.55Response to OA filed Aug. 9, 2010 in related U.S. Appl. No. 11/209,931.56Response to OA filed Oct. 9, 2009 in related U.S. Appl. No. 11/209,931.57Restriction Requirement mailed Mar. 23, 2009 in related U.S. Appl. No. 11/209,932.58Restriction Requirement mailed Mar. 23, 2010 in related U.S. Appl. No. 11/209,931.59Surgical Technique; Genesis Total Knee System Posterior-Stabilized; Smith+Nephew; Richards.60Surgical Technique; The Intermedics Natural-Knee System; Aaron A. Hofmann, M.D., Associate Professor of Surgery, Division of Orthopedic Surgery, University of Utah Medical Center, Salt Lake City, Utah; Intermedics Orthopedics.61The AMK Total Knee system; Design Rationale and Surgical Procedure, Gerald A. Engh, M.D., John R. Moreland, M.D., Robert G. Volz, M.D.; Instruments Designed by John R. Moreland, M.D.; DePuy.62The European Office Action mailed Mar. 23, 2011 in related European Patent Application No. 03713503.5.63The Intermedics Natural Knee� System with Cancellous-Structured Titanium.64The Intermedics Natural-Knee� System with Cancellous-Structured Titamium(TM).65The Intermedics Natural-Knee� System with Cancellous-Structured Titamium�.66The Miller/Galante Advantage; Unicompartmental Knee System; Zimmer.67Whiteside Ortholoc Modular Knee System; Surgical Procedure for the Whiteside Ortholoc� Modular Knee System; Dow Corning Wright. Referenziert von Zitiert von PatentEingetragen Ver�ffentlichungsdatum Antragsteller TitelUS2011001574918. Juni 201020. Jan. 2011Alexandria Research Technologies, LlcModular apparatus and method for sculpting the surface of a jointDrehenOriginalbildGoogle-Startseite - Sitemap - USPTO-Bulk-Downloads - Datenschutzerkl�rung - Nutzungsbedingungen - �ber Google Patente - Feedback gebenDaten bereitgestellt von IFI CLAIMS Patent Services.© 2012 Google