Constrained Joint Patents (Class 623/20.24)
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Patent number: 7572292Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed.Type: GrantFiled: December 20, 2002Date of Patent: August 11, 2009Assignee: Smith & Nephew, Inc.Inventors: Paul Crabtree, Greg Marik, Abraham Salehi, Kevin Weaver, Frantz Langlais, Denis Huten, Dennis Harrison
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Publication number: 20090171463Abstract: An endoprothetical connection element for creating a knee arthrodesis comprises a coupling element that comprises a first fastener and a second fastener. The first fastener is adapted for connection with a first fastening element corresponding to the first fastener that is provided at a shaft insertable into a femur of a patient. The second fastener is adapted for connection with a second fastening element corresponding to the second fastener that is provided at a shaft insertable into a tibia of the patient. The coupling element is formed such that a first longitudinal axis of the femoral shaft connected to the first fastener and a second longitudinal axis of the tibial shaft connected to the second fastener include an angle different from 180 degrees which, when implanted into the body of the patient, is lying in a coronal plane of the patient.Type: ApplicationFiled: December 19, 2008Publication date: July 2, 2009Inventor: Peter Brehm
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Publication number: 20090125116Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed.Type: ApplicationFiled: January 14, 2009Publication date: May 14, 2009Applicant: SMITH & NEPHEW, INC.Inventors: Paul Crabtree, Greg Marik, Abraham Salehi, Kevin Weaver, Frantz Langlais, Denis Huten, Dennis Harrison
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Publication number: 20090088860Abstract: An orthopaedic prosthesis includes a tibial bearing, a femoral component, and a hinge post coupled to the tibial bearing and the femoral component. The hinge post includes a medial and lateral axle. A pair of bushings are coupled to the axles and received in an internal chamber of the femoral component. The prosthesis may also include a plug received in the internal chamber and positioned to secure the hinge post to the femoral component. The femoral component is configured to rotate about an axis defined by the axles. In some embodiments, the femoral component may include a housing and a patella bearing separate from the housing.Type: ApplicationFiled: September 30, 2007Publication date: April 2, 2009Inventors: Kristen L. Romeis, Matthew D. Smith, Allan Ritchie
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Publication number: 20080288080Abstract: A knee joint prosthesis is disclosed. The prosthesis has a femoral component and a tibial component. The tibial component has a tibial plateau element fitted in a tibial tray element. A hemi capstan shaped bridge member is provided between replicated condyles on the femoral component. A specially shaped post is provided between kidney shaped meniscal depression on the tibial plateau element. The bridge member and the post act together to form an additional joint for load transfer during deep flexion of the prosthesis in its operative configuration.Type: ApplicationFiled: July 25, 2008Publication date: November 20, 2008Inventor: Kantilal Hastimal SANCHETI
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Publication number: 20080255671Abstract: A joint device is disclosed for use as a prosthesis in a human or animal body. The joint device comprises a T-shaped member having a transverse pin fixedly connected to a column member and a pair of transverse sleeves configured to receive the pin and allow the pin to rotate about its longitudinal axis within the sleeves. The sleeves engage a bore in a first bone and the column member is coupled to a second bone so that the first and second bones are pivotably interconnected by the joint device. The sleeves are compressible so as to allow multi-directional movement of the bones in the joint.Type: ApplicationFiled: February 21, 2006Publication date: October 16, 2008Inventor: Hans Rudolf Kriek
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Publication number: 20080021566Abstract: A prosthesis for replacing an articulating portion of bone is provided. The prosthesis can include an adaptor operable to replace a portion of the bone. The prosthesis can further include a sleeve coupled to the adaptor. The sleeve can define an offset coupling axis. The prosthesis can also include an articulating portion operable to replace the articulating portion of the bone. The sleeve can be positionable to couple the articulating portion to the offset coupling axis at a predetermined orientation.Type: ApplicationFiled: July 18, 2006Publication date: January 24, 2008Applicant: Biomet Manufacturing Corp.Inventors: Christopher Peters, Robert Metzger
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Publication number: 20080004708Abstract: A hinged orthopaedic knee prosthesis includes a femoral component, a tibial component, and a bearing component positioned between the femoral and tibial components. A hinge assembly is coupled to the femoral component to constrain the movement of the femoral component relative to the tibial component.Type: ApplicationFiled: June 30, 2006Publication date: January 3, 2008Inventor: Joseph G. Wyss
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Publication number: 20070282451Abstract: A prosthesis for replacing a selected portion of the anatomy is disclosed. Also disclosed is an exemplary method and apparatus for performing a procedure. The procedure can be minimally or less invasive.Type: ApplicationFiled: May 31, 2006Publication date: December 6, 2007Applicant: Biomet Manufacturing Corp.Inventors: Robert Metzger, Duke A. Fox
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Patent number: 7232465Abstract: A knee prosthesis includes a femoral prosthetic part which forms a pair of condylar gliding surfaces, a tibial part that has tibial gliding surfaces cooperating with the condylar gliding surfaces and a coupling part that connects the femoral and tibial parts so that they can rotate about a rotational axis that is approximately parallel to the axis of the tibia. If the femoral and tibial parts have the same anteroposterior alignment, an applied load is borne by a central region of the tibial gliding surfaces. The tibial gliding surface slopes upwardly relative to the prosthesis both in front of and behind the central region of the tibial gliding surface so that when the femoral and tibial parts rotate against one another, each of the condylar gliding surfaces remains in contact with its corresponding tibial gliding surface.Type: GrantFiled: July 25, 2003Date of Patent: June 19, 2007Assignee: Waldemar Link GmbH & Co. KGInventor: Arnold Keller
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Patent number: 6986791Abstract: A knee prosthetic for implantation includes a mobile rotatable posterior stabilized (PS) post. The mobile PS post may rotate or distract superiorly relative to a tibial component. The mobile PS post may rotate with the femur after implantation, at least for a selected distance. Various exterior shapes of the mobile PS post and/or a bore formed in the tibial component may be selected to limit the amount of rotation. Various materials may be chosen to form the mobile PS post depending upon desired qualities.Type: GrantFiled: April 15, 2003Date of Patent: January 17, 2006Assignee: Biomet Manufacturing Corp.Inventor: Robert Metzger
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Patent number: 6984249Abstract: A knee prosthesis with a flexion hinge which is formed by a hinge fork with two branches lying opposite each other, by a center part which is to be fitted in the hinge fork transversely with respect to the flexion axis of the latter, and by a hinge pin which, after the center part has been fitted into the hinge fork, is to be mounted, by movement in its longitudinal direction, in aligned hinge bores of the hinge fork and of the center part. So as not to have to push the pin into the prosthesis from the outside, it is formed by two pin stumps which, in an assembly position, are arranged inside the center part and, in a mounted position, partially protrude from the latter.Type: GrantFiled: April 15, 2002Date of Patent: January 10, 2006Assignee: Walde mar Link GmbH & Co. KGInventor: Arnold Keller
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Publication number: 20040249467Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available. The meniscal component includes a mechanism for preventing lift off of the meniscal component from the tibial component, while allowing rotation of the meniscal component relative to the tibial component.Type: ApplicationFiled: March 19, 2004Publication date: December 9, 2004Inventors: John E. Meyers, G. Doug Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa, Peter S. Walker
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Publication number: 20040186584Abstract: Knee prosthesis with a flexion hinge which is formed by a hinge fork with two branches (8) lying opposite each other, by a centre part (14) which is to be fitted in the hinge fork transversely with respect to the flexion axis (19) of the latter, and by a hinge pin which, after the centre part (14) has been fitted into the hinge fork, is to be mounted, by movement in its longitudinal direction, in aligned hinge bores (11, 20) of the hinge fork and of the centre part (14). So as not to have to push the pin into the prosthesis from the outside, it is formed by two pin stumps (12, 13) which, in an assembly position, are arranged inside the centre part (14) and, in a mounted position, partially protrude from the latter.Type: ApplicationFiled: May 6, 2004Publication date: September 23, 2004Inventor: Arnold Keller
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Publication number: 20040186583Abstract: Knee prosthesis, consisting of a femoral component (1), a tibial component (3) and an intermediate piece (10) which connects these and forms a flexion bearing (11) with the femoral component (1) and a rotation bearing (14, 15) with the tibial component (3), which rotation bearing (14, 15) can be locked relative to the tibial part (3). To allow the physician to decide during the operation whether to use a rotation-free prosthesis or a rotationally fixed prosthesis, the intermediate piece (10) is alternatively provided with a projection which engages in a matching recess in the tibial component (4).Type: ApplicationFiled: May 10, 2004Publication date: September 23, 2004Inventor: Arnold Keller
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Patent number: 6773461Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.Type: GrantFiled: September 4, 2002Date of Patent: August 10, 2004Assignee: Zimmer Technology, Inc.Inventors: John E. Meyers, G. Douglas Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
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Patent number: 6719800Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available. The meniscal component includes a mechanism for preventing lift off of the meniscal component from the tibial component, while allowing rotation of the meniscal component relative to the tibial component.Type: GrantFiled: November 2, 2001Date of Patent: April 13, 2004Assignee: Zimmer Technology, Inc.Inventors: John E. Meyers, G. Doug Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
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Patent number: 6699291Abstract: A prosthesis, such as a knee prosthesis, for the lower limb including a femur prosthetic element having a block presenting a lug running into the trochlea and adjacent to a notch from which a convex bearing surface extends, and a tibia prosthetic element having an insert with a sagittally oriented elevation defining a projection for antero-postero stabilization engaged in the notch when the prosthesis is in the extended position and which runs into a concave sliding ramp that extends to the rear edge of the insert.Type: GrantFiled: March 31, 2000Date of Patent: March 2, 2004Assignee: Merck Biomaterial FranceInventors: Marc Augoyard, Gerard Bascoulergue, Maurice Basso, Rene Bertocchi, Philippe Charret, Philippe Courcelles, Jean-Louis Debiesse, Laurent Dupre La Tour, Guy Eyraud, Jean-Philippe Fayard, Paul-Henri Hulin, Francois Lecuire, Gilles Melere, Joseph Millon, Jean-Paul Passot, Jacques Peyrot, Marc Relave, Gerard de Witte, Michel Vernizeau
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Publication number: 20030216809Abstract: A method of securing soft tissue to a prosthesis that has a retaining member secured thereto is disclosed. The method includes looping a first end portion of a first band around the retaining member such that both the first end portion of the first band and a second end portion of the first band extend outwardly from the retaining member. The method further includes looping a first end portion of a second band around the retaining member such that both the first end portion of the second band and a second end portion of the second band extend outwardly from the retaining member. Moreover, the method includes securing the soft tissue to (i) the first end portion and the second end portion of the first band, and (ii) the first end portion and the second end portion of the second band.Type: ApplicationFiled: June 17, 2003Publication date: November 20, 2003Inventor: Joe W. Ferguson
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Patent number: 6582469Abstract: Total prosthesis of a knee including a femoral element fitted with two condyles, a first of the condyles being external, a second of the condyles being internal, and a tibial plateau fitted with custom-made recesses to hold the condyles, wherein at least one of the condyles is integral on one of its sides with a convex cam ensuring posterior stability of the prosthesis. The tibial plateau has at least one track placed in the immediate vicinity of the recess holding the condyle integral with the cam, the at least one track being circumscribed by at least one curved abutment and at least one horizontal recess between posterior and anterior extremities of the tibial plateau. Provision is made between the condyles of the femoral element and the recesses of the tibial plateau for a free space and a notch for passage of a posterior cruciate ligament of a knee.Type: GrantFiled: June 9, 2000Date of Patent: June 24, 2003Assignee: Tornier S.A.Inventor: Alain Tornier
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Publication number: 20030009228Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.Type: ApplicationFiled: September 4, 2002Publication date: January 9, 2003Inventors: John E. Meyers, G. Douglas Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
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Patent number: 6488711Abstract: The invention relates to a (knee) joint for positioning two pivoting parts in such a way that they can pivot within a limited range. According to the invention, a combined turning and sliding movement is produced by means of curved guides (6, 6′, 7, 7′). A cam body (8) connected to one pivoting part, e.g. the lower leg, has two cams (10, 11; 13, 14), preferably on each side. Said cams interact with the curved guides (6, 6′, 7, 7′). The curved guides (6, 6′, 7, 7′) are located in half-shells (3, 4) which are connected to the second pivoting part, e.g. the upper leg. Parts of the inventive knee joint which are subject to wear are relatively easy to replace and movement sequences can also be modified when replacements are made.Type: GrantFiled: May 24, 2000Date of Patent: December 3, 2002Inventor: Josef Grafinger
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Patent number: 6485519Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.Type: GrantFiled: January 29, 2001Date of Patent: November 26, 2002Assignee: Bristol-Myers Squibb CompanyInventors: John E. Meyers, G. Douglas Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
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Publication number: 20020107576Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available. The meniscal component includes a mechanism for preventing lift off of the meniscal component from the tibial component, while allowing rotation of the meniscal component relative to the tibial component.Type: ApplicationFiled: November 2, 2001Publication date: August 8, 2002Inventors: John E. Meyers, G. Doug Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
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Publication number: 20020103541Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.Type: ApplicationFiled: January 29, 2001Publication date: August 1, 2002Inventors: John E. Meyers, G. Douglas Letson, Russell Windsor, Vincent A. Webster, Bill N. Sisk, Bill H. Haywood, Adam Griner, Michael Cook, Rodney L. Bays, Jerry L. Aikins, Marvin Figueroa
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Patent number: 6319283Abstract: An orthopaedic knee component for implanting within a proximal tibia includes a tibial tray with a proximal tibial plateau and a projection extending generally orthogonal to the tibial plateau. The tibial tray also includes a distally extending stem. A bearing is coupled with the tibial plateau and has an articular bearing surface for engagement with a femoral component. The bearing is rotationally movable between a first rotational limit and a second rotational limit about an axis extending generally orthogonal to the tibial plateau. The bearing has a backing surface engaging the tibial plateau which is sized and shaped such that the backing surface is substantially entirely supported by the tibial plateau at any position during rotational movement between the first rotation limit and the second rotational limit.Type: GrantFiled: July 2, 1999Date of Patent: November 20, 2001Assignee: Bristol-Myers Squibb CompanyInventors: John Insall, Audrey Patmore, Christopher McLean, Linggawati Tanamal, Clayton R. Miller
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Patent number: 6264696Abstract: A knee endoprosthesis comprising: a tibial part comprising a tibial rod bearing a tibial plate, a first tibial insert (11) disposed on the tibial plate, a femoral part comprising a femoral rod bearing two condyles (8, 9) each having a first sliding surface co-operating and congruent with a respective second sliding surface formed on the first tibial insert (11), wherein the tibial part is coupled to the femoral part so that the femur can bend relative to the tibia from a position (&agr;≈0) where the knee is extended to a position (&agr;max) where the knee is bent and vice versa. A progressive locking element is provided for limiting the lateral rotation and proper rotation of the condyles (8, 9) relative to the tibial plate, starting from a knee-bending angle &agr;0 determined in advance and up to a zero angle, the amplitude of proper rotation, when the angle &agr;0 is decreased, varying down to zero amplitude (complete blocking) at zero angle (unbent knee).Type: GrantFiled: January 3, 2000Date of Patent: July 24, 2001Assignee: AesculapInventors: Bernard Reigner, Jean-François Biegun, Pascal Marceaux
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Patent number: 6210444Abstract: An orthopaedic knee component for implanting within a proximal tibia includes a tibial tray with a proximal tibial plateau and a distally extending stem. The tibial tray also includes a recess extending into the tibial plateau. The recess is configured to define a first rotational stop and a second rotational stop. The tibial tray further includes a generally cylindrical post positioned within the recess. The post extends generally orthogonal to the tibial plateau and defines an axis of rotation. A bearing is carried by the tibial tray and has an articular bearing surface for engagement with a femoral component. The bearing has an opening in which the post is disposed. The opening and the post allow pivotal movement of the bearing relative to the tibial plateau about the axis of rotation. The bearing further has a projection extending into the recess of the tibial tray.Type: GrantFiled: October 26, 1999Date of Patent: April 3, 2001Assignee: Bristol-Myers Squibb CompanyInventors: Vincent A. Webster, Clayton R. Miller