Patents by Inventor Roland Willi
Roland Willi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9763790Abstract: The invention relates to a shaft for a femoral neck prosthesis, which comprises an anchoring area (27, 29) which is arranged inside the femur in order to anchor the prosthesis into bone, a head area which is axially adjacent to the anchoring area (27, 29) on the proximal side, said head area comprising a device (13) which is connected to the prosthesis head (15), in addition to a distal end which is arranged opposite the head area in the axial direction of the anchoring area (27, 29). The invention is characterised in that the maximum cross-sectional dimension of the head area is at the most equal and, in particular, smaller than the maximum diameter of the anchoring area (27, 29), in such a manner that the maximum cross-sectional dimension of the shaft (11) is in the anchoring area (27, 29).Type: GrantFiled: May 24, 2006Date of Patent: September 19, 2017Assignee: Zimmer GmbHInventors: Guido Grappiolo, Roland Willi
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Patent number: 9763677Abstract: Rasps for preparing bones of various patients to receive a prosthetic implant and a method for using the same. Multiple rasps may be provided as a set. Within the set, the rasps generally correspond to the size and shape of a single prosthetic implant, such as a prosthetic femoral hip stem, and have a range of bone removal and bone compression capabilities to account for unique bone characteristics of the various patients. A surgeon may select a desired rasp from the set provided depending on the patient's unique bone characteristics.Type: GrantFiled: October 8, 2014Date of Patent: September 19, 2017Assignee: Zimmer GmbHInventors: Sergio Romagnoli, Roland Willi
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Publication number: 20150025536Abstract: Rasps for preparing bones of various patients to receive a prosthetic implant and a method for using the same. Multiple rasps may be provided as a set. Within the set, the rasps generally correspond to the size and shape of a single prosthetic implant, such as a prosthetic femoral hip stem, and have a range of bone removal and bone compression capabilities to account for unique bone characteristics of the various patients. A surgeon may select a desired rasp from the set provided depending on the patient's unique bone characteristics.Type: ApplicationFiled: October 8, 2014Publication date: January 22, 2015Inventors: Sergio Romagnoli, Roland Willi
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Patent number: 8900241Abstract: In some examples, a method for at least one of preparation or machining of a femoral head formed on a neck of a femur includes selecting an instrument including probing forceps and a guide element including a centering axis. The guide element is coupled to the probing forceps at first and second coupling points disposed along the centering axis such that the centering axis is disposed in a central plane of the probing forceps independent of an opening angle of the probing forceps. The probing forceps are closed with probing jaws symmetrically contacting the neck of the femur at opposite sides with respect to an axis of the neck of the femur. The guide element self-adjusts with closing of the probing forceps so that the centering axis is automatically aligned in the middle with respect to the two oppositely disposed sides of the neck of the femur.Type: GrantFiled: July 26, 2012Date of Patent: December 2, 2014Assignee: Zimmer GmbHInventors: Roland Willi, Marcel Hinder, Andreas Marchione
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Patent number: 8870875Abstract: Rasps for preparing bones of various patients to receive a prosthetic implant and a method for using the same. Multiple rasps may be provided as a set. Within the set, the rasps generally correspond to the size and shape of a single prosthetic implant, such as a prosthetic femoral hip stem, and have a range of bone removal and bone compression capabilities to account for unique bone characteristics of the various patients. A surgeon may select a desired rasp from the set provided depending on the patient's unique bone characteristics.Type: GrantFiled: July 25, 2008Date of Patent: October 28, 2014Assignee: Zimmer GmbHInventors: Sergio Romagnoli, Roland Willi
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Patent number: 8377376Abstract: An implant is set forth having at least one first element and a second element, wherein the first element is provided in a pre-determined relative location to the second element, in particular at least partly in a recess of the second element. The first element has a pre-positioning location having play with respect to the second element and allowing a fully area gas sterilization of both elements and can be displaced from this pre-positioning location into an end positioning location corresponding to a fixed connection of both elements.Type: GrantFiled: November 20, 2008Date of Patent: February 19, 2013Assignee: Zimmer GmbHInventors: Roland Baege, Hermann Breimesser, Roland Willi
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Publication number: 20120289967Abstract: In some examples, a method for at least one of preparation or machining of a femoral head formed on a neck of a femur includes selecting an instrument including probing forceps and a guide element including a centering axis. The guide element is coupled to the probing forceps at first and second coupling points disposed along the centering axis such that the centering axis is disposed in a central plane of the probing forceps independent of an opening angle of the probing forceps. The probing forceps are closed with probing jaws symmetrically contacting the neck of the femur at opposite sides with respect to an axis of the neck of the femur. The guide element self-adjusts with closing of the probing forceps so that the centering axis is automatically aligned in the middle with respect to the two oppositely disposed sides of the neck of the femur.Type: ApplicationFiled: July 26, 2012Publication date: November 15, 2012Applicant: ZIMMER GMBHInventors: Roland Willi, Marcel Hinder, Andreas Marchione
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Patent number: 8236001Abstract: The invention relates to an instrument for preparing and/or machining a femoral head (11) embodied on a femoral neck (19). Said instrument comprises tactile forceps (91) that are provided with two forked levers (13, 15) and two tactile jaws (23, 25), each of which is assigned to one of the forked levers (13, 15). The forked levers are interconnected at a fulcrum (93). The inventive instrument features a manipulating end and a working end. The tactile jaws are located at the working end of the instrument. A guiding element (28) is provided which encompasses a centering pin (21) and is mounted and/or guided at least at two points (105, 107) spaced apart from each other in the direction of the centering pin (21) in such a way that the centering pin (21) always lies on a central plane (12) of the tactile forceps (91) regardless of an opening angle of the tactile forceps (91), said central plane (12) containing the fulcrum (93).Type: GrantFiled: October 6, 2006Date of Patent: August 7, 2012Assignee: Zimmer GmbHInventors: Roland Willi, Marcel Hinder, Andreas Marchione
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Patent number: 7857859Abstract: The specified implant for use as a femur component in a hip joint prosthesis comprises a shaft, being intended for the implantation in a cavity of a proximal femur, a head section, for fastening a femoral head prosthesis and a femoral neck section, being arranged between the shaft and the head section. The femoral neck section comprises a femoral head axis and a contour in a cross-section perpendicular to the femoral neck axis, tapering in a V-shape or wedge-shape to medial and at least an anterior straight section and at least a posterior straight section, wherein the straight sections define the tapering.Type: GrantFiled: May 15, 2008Date of Patent: December 28, 2010Assignee: Zimmer, GmbHInventors: Roland Willi, Aude Leroy Gallissot, Hermann Breimesser
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Publication number: 20100023014Abstract: Rasps for preparing bones of various patients to receive a prosthetic implant and a method for using the same. Multiple rasps may be provided as a set. Within the set, the rasps generally correspond to the size and shape of a single prosthetic implant, such as a prosthetic femoral hip stem, and have a range of bone removal and bone compression capabilities to account for unique bone characteristics of the various patients. A surgeon may select a desired rasp from the set provided depending on the patient's unique bone characteristics.Type: ApplicationFiled: July 25, 2008Publication date: January 28, 2010Inventors: Sergio Romagnoli, Roland Willi
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Publication number: 20090105842Abstract: The invention relates to an implant system having at least one shaft of a prosthesis, in particular a hip joint prosthesis, which can be anchored without cement, and a set of instruments for the preparation of the bone in which the shaft is to be anchored, wherein the shaft has an arcuate base body with a trapezoidal or rectangular cross-section and the set of instruments includes a first instrument which is shaped in accordance with the arcuate shape of the shaft and with which a recess serving for the reception of the base body can be established in the bone; and wherein the shaft is provided with ribs in the proximal region and the set of instruments includes a guide body shaped in accordance with the arcuate shape of the shaft for a second instrument with which structures can be manufactured in the bone serving to fix a path for the shaft ribs when the guide body is located in the recess.Type: ApplicationFiled: December 19, 2008Publication date: April 23, 2009Applicant: ZIMMER, GMBHInventors: Hubert Noetzli, Roland Willi
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Publication number: 20090081076Abstract: An implant is set forth having at least one first element and a second element, wherein the first element is provided in a pre-determined relative location to the second element, in particular at least partly in a recess of the second element.Type: ApplicationFiled: November 20, 2008Publication date: March 26, 2009Applicant: ZIMMER, GMBHInventors: Roland Baege, Hermann Breimesser, Roland Willi
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Publication number: 20090076619Abstract: The invention relates to a shaft for a femoral neck prosthesis, which comprises an anchoring area (27, 29) which is arranged inside the femur in order to anchor the prosthesis into bone, a head area which is axially adjacent to the anchoring area (27, 29) on the proximal side, said head area comprising a device (13) which is connected to the prosthesis head (15), in addition to a distal end which is arranged opposite the head area in the axial direction of the anchoring area (27, 29). The invention is characterised in that the maximum cross-sectional dimension of the head area is at the most equal and, in particular, smaller than the maximum diameter of the anchoring area (27, 29), in such a manner that the maximum cross-sectional dimension of the shaft (11) is in the anchoring area (27, 29).Type: ApplicationFiled: May 24, 2006Publication date: March 19, 2009Applicant: ZIMMER GMBHInventors: Guido Grappiolo, Roland Willi
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Patent number: 7481842Abstract: The invention relates to an implant system having at least one shaft of a prosthesis, in particular a hip joint prosthesis, which can be anchored without cement, and a set of instruments for the preparation of the bone in which the shaft is to be anchored, wherein the shaft has an arcuate base body with a trapezoidal or rectangular cross-section and the set of instruments includes a first instrument which is shaped in accordance with the arcuate shape of the shaft and with which a recess serving for the reception of the base body can be established in the bone; and wherein the shaft is provided with ribs in the proximal region and the set of instruments includes a guide body shaped in accordance with the arcuate shape of the shaft for a second instrument with which structures can be manufactured in the bone serving to fix a path for the shaft ribs when the guide body is located in the recess.Type: GrantFiled: July 12, 2005Date of Patent: January 27, 2009Assignee: Zimmer, GmbHInventors: Hubert Noetzli, Roland Willi
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Patent number: 7473279Abstract: An implant is set forth having at least one first element and a second element, wherein the first element is provided in a pre-determined relative location to the second element, in particular at least partly in a recess of the second element. The first element has a pre-positioning location having play with respect to the second element and allowing a fully area gas sterilization of both elements and can be displaced from this pre-positioning location into an end positioning location corresponding to a fixed connection of both elements.Type: GrantFiled: April 9, 2003Date of Patent: January 6, 2009Assignee: Zimmer, GmbHInventors: Roland Baege, Hermann Breimesser, Roland Willi
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Publication number: 20080228283Abstract: The specified implant for use as a femur component in a hip joint prosthesis comprises a shaft, being intended for the implantation in a cavity of a proximal femur, a head section, for fastening a femoral head prosthesis and a femoral neck section, being arranged between the shaft and the head section. The femoral neck section comprises a femoral head axis and a contour in a cross-section perpendicular to the femoral neck axis, tapering in a V-shape or wedge-shape to medial and at least an anterior straight section and at least a posterior straight section, wherein the straight sections define the tapering.Type: ApplicationFiled: May 23, 2008Publication date: September 18, 2008Applicant: ZIMMER GmbHInventors: Roland WILLI, Aude Leroy GALLISSOT, Hermann BREIMESSER
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Publication number: 20080215057Abstract: The invention relates to an instrument for preparing and/or machining a femoral head (11) embodied on a femoral neck (19). Said instrument comprises tactile forceps (91) that are provided with two forked levers (13, 15) and two tactile jaws (23, 25), each of which is assigned to one of the forked levers (13, 15). The forked levers are interconnected at a fulcrum (93). The inventive instrument features a manipulating end and a working end. The tactile jaws are located at the working end of the instrument. A guiding element (28) is provided which encompasses a centering pin (21) and is mounted and/or guided at least at two points (105, 107) spaced apart from each other in the direction of the centering pin (21) in such a way that the centering pin (21) always lies on a central plane (12) of the tactile forceps (91) regardless of an opening angle of the tactile forceps (91), said central plane (12) containing the fulcrum (93).Type: ApplicationFiled: October 6, 2006Publication date: September 4, 2008Applicant: ZIMMER GMBHInventors: Roland Willi, Marcel Hinder, Andreas Marchione
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Publication number: 20060012127Abstract: The invention relates to an implant system having at least one shaft of a prosthesis, in particular a hip joint prosthesis, which can be anchored without cement, and a set of instruments for the preparation of the bone in which the shaft is to be anchored, wherein the shaft has an arcuate base body with a trapezoidal or rectangular cross-section and the set of instruments includes a first instrument which is shaped in accordance with the arcuate shape of the shaft and with which a recess serving for the reception of the base body can be established in the bone; and wherein the shaft is provided with ribs in the proximal region and the set of instruments includes a guide body shaped in accordance with the arcuate shape of the shaft for a second instrument with which structures can be manufactured in the bone serving to fix a path for the shaft ribs when the guide body is located in the recess.Type: ApplicationFiled: July 12, 2005Publication date: January 19, 2006Applicant: Zimmer GmbHInventors: Hubert Noetzli, Roland Willi
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Publication number: 20040019380Abstract: An implant is set forth having at least one first element and a second element, wherein the first element is provided in a pre-determined relative location to the second element, in particular at least partly in a recess of the second element. The first element has a pre-positioning location having play with respect to the second element and allowing a fully area gas sterilisation of both elements and can be displaced from this pre-positioning location into an end positioning location corresponding to a fixed connection of both elements.Type: ApplicationFiled: April 9, 2003Publication date: January 29, 2004Inventors: Roland Baege, Hermann Breimesser, Roland Willi
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Patent number: 5658345Abstract: The acetabulum (1) in accordance with the invention comprises a spherically formed outer shell (3) as well as a spherically formed inner shell (4) which is inserted into the outer shell (3). The inner shell (4) can, for example, consist of an oxide-ceramic material, in particular of aluminum oxide. The outer shell (4) can consist of, for example, titanium. The outer surface (4c) of the inner shell (4) is formed such that it has a first partial surface (4c) with increasing outer cross-section from the pole (2a) towards the equatorial opening (4b) to a site (4a) with a largest outer diameter, that a further partial surface (4e) with an outer cross-section decreasing towards the equatorial opening (4b) connects to the partial surface (4c), which goes into a further partial surface (4f) with increasing outer cross-section towards the equatorial opening.Type: GrantFiled: July 11, 1995Date of Patent: August 19, 1997Assignee: Sulzer Medizinaltechnik AGInventor: Roland Willi