Patents by Inventor Andreas Meyenhofer
Andreas Meyenhofer 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: 11957590Abstract: A shell (1) for a prosthetic joint to be driven into a bone substance. The shell having an outer lateral surface (4) which is convexly curved in cross section and on which a plurality of ribs (5) is arranged. All ribs extend in the same direction at a preferably increasing gradient angle of 45° to 85° at the equatorial end (6) to a pole-side end (7). The cumulative flank projection area of all ribs (5) corresponds to at least a fifth of the entire outer lateral surface. As a result of this measure, a very high primary stability is achieved once the shell has been driven in, the shell being screwed into the bone substance very precisely and without bone material being sheared off. This arrangement can also be applied, similarly, to a concavely curved inner lateral surface.Type: GrantFiled: November 19, 2019Date of Patent: April 16, 2024Assignee: MATHYS AG BETTLACHInventors: Christian Gugler, Armin Jossi, Martin Schmidt, Andreas Meyenhofer
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Publication number: 20210275309Abstract: A shell (1) for a prosthetic joint to be driven into a bone substance. The shell having an outer lateral surface (4) which is convexly curved in cross section and on which a plurality of ribs (5) is arranged. All ribs extend in the same direction at a preferably increasing gradient angle of 45° to 85° at the equatorial end (6) to a pole-side end (7). The cumulative flank projection area of all ribs (5) corresponds to at least a fifth of the entire outer lateral surface. As a result of this measure, a very high primary stability is achieved once the shell has been driven in, the shell being screwed into the bone substance very precisely and without bone material being sheared off. This arrangement can also be applied, similarly, to a concavely curved inner lateral surface.Type: ApplicationFiled: November 19, 2019Publication date: September 9, 2021Inventors: Christian GUGLER, Armin JOSSI, Martin SCHMIDT, Andreas MEYENHOFER
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Patent number: 10258474Abstract: An artificial joint cup, in particular a hip joint cup, for implanting in a cavity in a bone. The joint cup is, in particular, substantially in the form of a spherical dome cup, having a convex outer surface and a concave inner surface. In addition, the joint cup comprises an outer diameter and an inner diameter. The ratio of the difference between the outer diameter and the inner diameter, in relation to the outer diameter, is in a range of between 0.5 and 0.07, preferably between 0.3 and 0.075, particularly preferably between 0.2 and 0.1. The joint cup is manufactured from a ceramic material, and the convex outer surface has a micro-structuring.Type: GrantFiled: August 13, 2015Date of Patent: April 16, 2019Assignee: JOSSI HOLDING AGInventors: Armin Jossi, Andreas Meyenhofer, Martin Schmidt
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Publication number: 20180200062Abstract: An implant (1), in particular an acetabular implant, for implantation into a bone has, at least in parts, a surface structure (2) of raised portions (3) and depressions (4). The depressions (4) have zones coated with a porous coating (5). The raised portions are either not coated at all or are coated such that the coating has a thin layer thickness or a higher abrasion resistance in these portions. In this way, an improved abrasion behavior is reached when the implant is inserted into the bone.Type: ApplicationFiled: April 18, 2016Publication date: July 19, 2018Inventors: Andreas MEYENHOFER, Christian GUGLER, Daniel NADLER
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Publication number: 20170239056Abstract: An artificial joint cup (2), in particular a hip joint cup, for implanting in a cavity in a bone. The joint cup (2) is, in particular, substantially in the form of a spherical dome cup, having a convex outer surface (3) and a concave inner surface (4). In addition, the joint cup (2) comprises an outer diameter (OD) and an inner diameter (ID). The ratio of the difference (D) between the outer diameter (OD) and the inner diameter (ID) in relation to the outer diameter (OD) is in a region between 0.5 and 0.07, preferably between 0.3 and 0.075, particularly preferably between 0.2 and 0.1. The joint cup (2) is manufactured from a ceramic material, and the convex outer surface (3) has a micro-structuring.Type: ApplicationFiled: August 13, 2015Publication date: August 24, 2017Applicant: JOSSI HOLDING AGInventors: Armin JOSSI, Andreas MEYENHOFER, Martin SCHMIDT
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Patent number: 9301852Abstract: The instrument has a collet (19) that has at least two clamping jaws (18, 18?) for engaging an engaging means (4) on an implant body (1). The collet is received in a sleeve portion (20), the free end (21) of which has a support portion (22) that can be supported on the surface of the implant. A tension element (23) that engages the collet is used as an actuating means for actuating the collet. The outer faces of the clamping jaws interact with the inner face of the sleeve portion such that the collet can be closed and moved relative to the free end of the sleeve portion by pulling the tension element.Type: GrantFiled: April 23, 2012Date of Patent: April 5, 2016Assignee: Jossi Holding AGInventors: Andreas Meyenhofer, Christian Gugler
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Patent number: 9198761Abstract: The invention relates to a ball-and-socket implant (I), in particular an acetabular implant, preferably in the shape of a spherical cup shell, said implant having at least one region with a surface structure (2, 7). The at least one region extends between the equator and the pole of the spherical cup shell. The surface structure comprises a plurality of structural elements (6), each of which is formed by a plurality of intersecting ridges (3, 8) with opposite inclinations. The number of structural elements (6) on the equator (5) or on a circle of latitude near the equator is the same as on a circle of latitude near the pole. The ridges (3, 8) have a curvature such that the inclination of the ridges with respect to the circles of latitude, and thus an angle between a tangent of the ridge curvature and a circle of latitude, continuously increases from the equator (5) to the pole (4).Type: GrantFiled: March 21, 2012Date of Patent: December 1, 2015Assignee: Jossi Holding AGInventors: Christian Gugler, Martin Schmidt, Andreas Meyenhofer
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Patent number: 9173741Abstract: An implant, having a surface segment with at least one break line delineating an opening or recess of a closure segment which can be removed from the surface segment, is produced by first making a sub-assembly of the implant and then weakening the material in the region of the break line by material deformation.Type: GrantFiled: May 4, 2011Date of Patent: November 3, 2015Assignee: Jossi Holding AGInventors: Christian Gugler, Daniel Nadler, Andreas Meyenhofer, Simon Bodmer
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Publication number: 20140074248Abstract: The instrument has a collet (19) that has at least two clamping jaws (18, 18?) for engaging an engaging means (4) on an implant body (1). The collet is received in a sleeve portion (20), the free end (21) of which has a support portion (22) that can be supported on the surface of the implant. A tension element (23) that engages the collet is used as an actuating means for actuating the collet. The outer faces of the clamping jaws interact with the inner face of the sleeve portion such that the collet can be closed and moved relative to the free end of the sleeve portion by pulling the tension element.Type: ApplicationFiled: April 23, 2012Publication date: March 13, 2014Inventors: Andreas Meyenhofer, Christian Gugler
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Publication number: 20140012391Abstract: The invention relates to a ball-and-socket implant (I), in particular an acetabular implant, preferably in the shape of a spherical cup shell, said implant having at least one region with a surface structure (2, 7). The at least one region extends between the equator and the pole of the spherical cup shell. The surface structure comprises a plurality of structural elements (6), each of which is formed by a plurality of intersecting ridges (3, 8) with opposite inclinations. The number of structural elements (6) on the equator (5) or on a circle of latitude near the equator is the same as on a circle of latitude near the pole. The ridges (3, 8) have a curvature such that the inclination of the ridges with respect to the circles of latitude, and thus an angle between a tangent of the ridge curvature and a circle of latitude, continuously increases from the equator (5) to the pole (4).Type: ApplicationFiled: March 21, 2012Publication date: January 9, 2014Applicant: Jossi Holding AGInventors: Christian Gugler, Martin Schmidt, Andreas Meyenhofer
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Publication number: 20130218287Abstract: The present invention relates to a joint socket (1) for a hip joint prosthesis, with a metal outer shell (2) and with a preferably ceramic inner shell (3). The outer shell (2) and the inner shell (3) are held together with a force fit by shrinkage and are connected to each other by at least one additional form-fit means (4; 5). The at least one form-fit means (4;5) is arranged on the periphery in the equatorial edge region of the joint socket in such a way that, as a result of the shrinkage stress, it forms a sealing operative connection between outer shell (2) and inner shell (3). The present invention further relates to a method for producing a joint socket (1), in which method a metal outer shell (2) is shrink-fitted onto a preferably ceramic inner shell (3), wherein at least one peripheral form-fit means (4;5) in the equatorial edge region of the outer shell (2) engages in a corresponding means of the inner shell (3).Type: ApplicationFiled: August 31, 2011Publication date: August 22, 2013Applicant: Jossi Holding AGInventors: Andreas Meyenhofer, Martin Schmidt, Christian Gugler, Daniel Nadler
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Publication number: 20130053976Abstract: The invention relates to a method for producing an implant (1) having at least one surface segment having at least one break line (3) delineating for exposing an opening or recess of a closure segment (2) removable from the surface segment by the effect of force. In a first, preferably machining method, a sub-assembly of the implant (1) is first produced. In a second step, the material strength in the region of the break line (3) is weakened by material deformation.Type: ApplicationFiled: May 4, 2011Publication date: February 28, 2013Applicant: JOSSI HOLDING AGInventors: Christian Gugler, Daniel Nadler, Andreas Meyenhofer, Simon Bodmer