Patents by Inventor Achim Schünemann
Achim Schünemann 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: 10864030Abstract: A polyaxial bone anchoring device includes a receiving part having a longitudinal axis, a channel for receiving a rod, and an accommodation space for pivotably holding a head of a bone anchoring element, and a pressure member configured to be positioned in the receiving part and to exert pressure onto the head to lock the head in the receiving part. The pressure member includes a pressure exerting surface and a deformable portion having a free end, wherein the deformable portion is configured to assume at least a first configuration and a second configuration. The polyaxial bone anchoring device further includes a locking member configured to be inserted into the channel and to exert a force onto the deformable portion.Type: GrantFiled: November 19, 2018Date of Patent: December 15, 2020Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KGInventors: Lutz Biedermann, Achim Schünemann, Dimosthenis Dandanopoulos, Wilfried Matthis
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Publication number: 20200383713Abstract: A coupling assembly for coupling a rod to a bone anchoring element includes a receiving part having a first end, a second end, a recess having a bottom for receiving the rod, and an accommodation space having an opening at the second end of the receiving part for accommodating a head of the bone anchoring element, and a retainer element configured to be inserted into the receiving part from the first end and to hold at least part of the head, the retainer element having a first portion and a spring portion compressible in an axial direction attached to the first portion. When the retainer element is in the accommodation space in a first position, the spring portion extends in the axial direction from the first portion of the retainer element to an axial position between the first end of the receiving part and the bottom of the recess.Type: ApplicationFiled: June 18, 2020Publication date: December 10, 2020Inventors: Lutz Biedermann, Achim Schünemann, Dimosthenis Dandanopoulos
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Patent number: 10716609Abstract: A coupling assembly for coupling a rod to a bone anchoring element includes a receiving part having a first end, a second end, a recess having a bottom for receiving the rod, and an accommodation space having an opening at the second end of the receiving part for accommodating a head of the bone anchoring element, and a retainer element configured to be inserted into the receiving part from the first end and to hold at least part of the head, the retainer element having a first portion and a spring portion compressible in an axial direction attached to the first portion. When the retainer element is in the accommodation space in a first position, the spring portion extends in the axial direction from the first portion of the retainer element to an axial position between the first end of the receiving part and the bottom of the recess.Type: GrantFiled: July 23, 2018Date of Patent: July 21, 2020Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KGInventors: Lutz Biedermann, Achim Schünemann, Dimosthenis Dandanopoulos
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Publication number: 20200179008Abstract: A coupling device includes a first coupling body configured to be coupled to a first bone anchor, a second coupling body configured to be coupled a second bone anchor, and a connection device comprising a first connection member connectable to the first coupling body, a second connection member connectable to the second coupling body, and a length adjustment member positionable between and insertable at least partially into each of the first and second connection members. The first and second connection members are movable relative to the length adjustment member. The length adjustment member can be actuated in a first direction to increase a distance between the first connection member and the second connection member, and in a second direction different from the first direction to decrease the distance between the first connection member and the second connection member.Type: ApplicationFiled: December 2, 2019Publication date: June 11, 2020Inventors: Timo Biedermann, Achim Schünemann
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Publication number: 20200155203Abstract: An anchoring member for a polyaxial bone anchoring device includes a bone anchoring section having a first end, a second end, and a bone engagement structure, a head having an outer surface portion that defines a segment of a sphere, wherein a central axis extends through the head and the first and second ends of the bone anchoring section, and a neck extending between the first end of the bone anchoring section and the head. The neck has a first portion and a second portion between the first portion and the bone anchoring section. In at least a first cross-sectional plane including the central axis, the first portion of the neck is concave with a first curvature, and the second portion of the neck is concave with a second curvature that is less curved than the first curvature.Type: ApplicationFiled: November 18, 2019Publication date: May 21, 2020Inventors: Timo Biedermann, Achim Schünemann
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Publication number: 20200107862Abstract: A system for correcting a position of bones, bone parts, or vertebrae includes a first bone anchor including a shank for anchoring in bone and a receiver for connecting a rod to the shank, a second bone anchor including a shank for anchoring in bone and a receiver for connecting the rod to the shank, and an instrument including a positioning member, a first coupling member for coupling the positioning member to the first bone anchor, and a second coupling member for coupling the positioning member to the second bone anchor. The first and second coupling members are movable relative to one another. The receiver is pivotable relative to the shank for at least one bone anchor. The at least one bone anchor can assume a locked configuration where an angular position of the receiver relative to the shank is locked while the rod remains movable relative to the receiver.Type: ApplicationFiled: October 7, 2019Publication date: April 9, 2020Inventors: Timo Biedermann, Achim Schünemann, Marc Mundhenke
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Publication number: 20200078056Abstract: An instrument for locking and unlocking a head of a bone anchor relative to a receiving part of a polyaxial bone anchoring device includes a tube assembly with an inner tube and an outer tube at least partially around the inner tube, and an actuator assembly including an actuating mechanism movable from a first orientation to a second orientation to displace the inner tube and the outer tube relative to one another between a first axial position configured to unlock the bone anchoring device such that the head is pivotable relative to the receiving part, and a second axial position configured to lock the head. The actuator assembly is adjustable between a first configuration where the tube assembly assumes the first axial position when the actuating mechanism is moved, and a second configuration where the tube assembly assumes the second axial position when the actuating mechanism is moved.Type: ApplicationFiled: September 16, 2019Publication date: March 12, 2020Inventors: Timo Biedermann, Kevin Dold, Achim Schünemann
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Patent number: 10470805Abstract: An instrument for locking and unlocking a head of a bone anchor relative to a receiving part of a polyaxial bone anchoring device includes a tube assembly with an inner tube and an outer tube at least partially around the inner tube, and an actuator assembly including an actuating mechanism movable from a first orientation to a second orientation to displace the inner tube and the outer tube relative to one another between a first axial position configured to unlock the bone anchoring device such that the head is pivotable relative to the receiving part, and a second axial position configured to lock the head. The actuator assembly is adjustable between a first configuration where the tube assembly assumes the first axial position when the actuating mechanism is moved, and a second configuration where the tube assembly assumes the second axial position when the actuating mechanism is moved.Type: GrantFiled: August 4, 2017Date of Patent: November 12, 2019Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KGInventors: Timo Biedermann, Kevin Dold, Achim Schünemann
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Publication number: 20190133658Abstract: A polyaxial bone anchoring device includes a receiving part having a longitudinal axis, a channel for receiving a rod, and an accommodation space for pivotably holding a head of a bone anchoring element, and a pressure member configured to be positioned in the receiving part and to exert pressure onto the head to lock the head in the receiving part. The pressure member includes a pressure exerting surface and a deformable portion having a free end, wherein the deformable portion is configured to assume at least a first configuration and a second configuration. The polyaxial bone anchoring device further includes a locking member configured to be inserted into the channel and to exert a force onto the deformable portion.Type: ApplicationFiled: November 19, 2018Publication date: May 9, 2019Inventors: Lutz Biedermann, Achim Schünemann, Dimosthenis Dandanopoulos, Wilfried Matthis
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Publication number: 20190015144Abstract: A coupling assembly for coupling a rod to a bone anchoring element includes a receiving part having a first end, a second end, a recess having a bottom for receiving the rod, and an accommodation space having an opening at the second end of the receiving part for accommodating a head of the bone anchoring element, and a retainer element configured to be inserted into the receiving part from the first end and to hold at least part of the head, the retainer element having a first portion and a spring portion compressible in an axial direction attached to the first portion. When the retainer element is in the accommodation space in a first position, the spring portion extends in the axial direction from the first portion of the retainer element to an axial position between the first end of the receiving part and the bottom of the recess.Type: ApplicationFiled: July 23, 2018Publication date: January 17, 2019Inventors: Lutz Biedermann, Achim Schünemann, Dimosthenis Dandanopoulos
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Patent number: 10159519Abstract: A polyaxial bone anchoring device includes a receiving part having a longitudinal axis, a channel for receiving a rod, and an accommodation space for pivotably holding a head of a bone anchoring element, and a pressure member configured to be positioned in the receiving part and to exert pressure onto the head to lock the head in the receiving part. The pressure member includes a pressure exerting surface and a deformable portion having a free end, wherein the deformable portion is configured to assume at least a first configuration and a second configuration. The polyaxial bone anchoring device further includes a locking member configured to be inserted into the channel and to exert a force onto the deformable portion.Type: GrantFiled: August 10, 2015Date of Patent: December 25, 2018Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KGInventors: Lutz Biedermann, Achim Schünemann, Dimosthenis Dandanopoulos, Wilfried Matthis
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Publication number: 20180263663Abstract: A coupling assembly for coupling a rod to a bone anchoring element, and including a receiving part having a first end, a second end, and an accommodation space having an opening at the second end for inserting a head of the bone anchoring element, a pressure element insertable from the first end, positionable in the accommodation space, and configured to hold the head, the pressure element having at least one spring portion extending circumferentially around the pressure element and being radially compressible, and a rod receiving element separable from the pressure element, wherein in a first position, the spring portion is configured to engage an engagement structure at an inner wall of the receiving part to prevent movement of the pressure element towards the first end, and wherein the rod receiving element is configured to move the pressure element from the first position towards the second end.Type: ApplicationFiled: March 12, 2018Publication date: September 20, 2018Inventors: Lutz Biedermann, Wilfried Matthis, Dimosthenis Dandanopoulos, Achim Schünemann
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Patent number: 10058367Abstract: A coupling assembly for coupling a rod to a bone anchoring element includes a receiving part having a first end, a second end, a recess having a bottom for receiving the rod, and an accommodation space having an opening at the second end of the receiving part for accommodating a head of the bone anchoring element, and a retainer element configured to be inserted into the receiving part from the first end and to hold at least part of the head, the retainer element having a first portion and a spring portion compressible in an axial direction attached to the first portion. When the retainer element is in the accommodation space in a first position, the spring portion extends in the axial direction from the first portion of the retainer element to an axial position between the first end of the receiving part and the bottom of the recess.Type: GrantFiled: January 13, 2015Date of Patent: August 28, 2018Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KGInventors: Lutz Biedermann, Achim Schünemann, Dimosthenis Dandanopoulos
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Patent number: 9943338Abstract: A coupling assembly for coupling a rod to a bone anchoring element, and including a receiving part having a first end, a second end, and an accommodation space having an opening at the second end for inserting a head of the bone anchoring element, a pressure element insertable from the first end, positionable in the accommodation space, and configured to hold the head, the pressure element having at least one spring portion extending circumferentially around the pressure element and being radially compressible, and a rod receiving element separable from the pressure element, wherein in a first position, the spring portion is configured to engage an engagement structure at an inner wall of the receiving part to prevent movement of the pressure element towards the first end, and wherein the rod receiving element is configured to move the pressure element from the first position towards the second end.Type: GrantFiled: September 18, 2014Date of Patent: April 17, 2018Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KGInventors: Lutz Biedermann, Wilfried Matthis, Dimosthenis Dandanopoulos, Achim Schünemann
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Publication number: 20180055545Abstract: An instrument for locking and unlocking a head of a bone anchor relative to a receiving part of a polyaxial bone anchoring device includes a tube assembly with an inner tube and an outer tube at least partially around the inner tube, and an actuator assembly including an actuating mechanism movable from a first orientation to a second orientation to displace the inner tube and the outer tube relative to one another between a first axial position configured to unlock the bone anchoring device such that the head is pivotable relative to the receiving part, and a second axial position configured to lock the head. The actuator assembly is adjustable between a first configuration where the tube assembly assumes the first axial position when the actuating mechanism is moved, and a second configuration where the tube assembly assumes the second axial position when the actuating mechanism is moved.Type: ApplicationFiled: August 4, 2017Publication date: March 1, 2018Inventors: Timo Biedermann, Kevin Dold, Achim Schünemann
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Publication number: 20160038204Abstract: A polyaxial bone anchoring device includes a receiving part having a longitudinal axis, a channel for receiving a rod, and an accommodation space for pivotably holding a head of a bone anchoring element, and a pressure member configured to be positioned in the receiving part and to exert pressure onto the head to lock the head in the receiving part. The pressure member includes a pressure exerting surface and a deformable portion having a free end, wherein the deformable portion is configured to assume at least a first configuration and a second configuration. The polyaxial bone anchoring device further includes a locking member configured to be inserted into the channel and to exert a force onto the deformable portion.Type: ApplicationFiled: August 10, 2015Publication date: February 11, 2016Inventors: Lutz Biedermann, Achim Schünemann, Dimosthenis Dandanopoulos, Wilfried Matthis
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Publication number: 20150196338Abstract: A coupling assembly is provided comprising a receiving part (5, 5?) having a first end (5a), a second end (5b) and a central axis (C) extending through the first end (5a) and second end (5b), a recess (52) for receiving a rod (100), the recess having a bottom, and an accommodation space (54, 54?) for accommodating a head (3) of an anchoring element (1), the accommodation space having an opening (55, 55?) at the second end (5b) sized so as to permit the insertion of the head (3) and a bore extending from the accommodation space to the first end (5a), a retainer element (6, 6?) configured to be positioned at least partially in the accommodation space (54, 54?) and sized so as to at least partially encompass an inserted head (3); wherein the retainer element (6, 6?) comprises at least one spring portion (66a, 66b; 66?) that is compressible in an axial direction and that extends in an axial direction at least up to a position toward the first end (5a) of the receiving part that is higher than the bottom of theType: ApplicationFiled: January 13, 2015Publication date: July 16, 2015Inventors: Lutz BIEDERMANN, Achim SCHÜNEMANN, Dimosthenis DANDANOPOULOS
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Publication number: 20150080960Abstract: A coupling assembly for coupling a rod to a bone anchoring element, and including a receiving part having a first end, a second end, and an accommodation space having an opening at the second end for inserting a head of the bone anchoring element, a pressure element insertable from the first end, positionable in the accommodation space, and configured to hold the head, the pressure element having at least one spring portion extending circumferentially around the pressure element and being radially compressible, and a rod receiving element separable from the pressure element, wherein in a first position, the spring portion is configured to engage an engagement structure at an inner wall of the receiving part to prevent movement of the pressure element towards the first end, and wherein the rod receiving element is configured to move the pressure element from the first position towards the second end.Type: ApplicationFiled: September 18, 2014Publication date: March 19, 2015Inventors: Lutz Biedermann, Wilfried Matthis, Dimosthenis Dandanopoulos, Achim Schünemann