Patents by Inventor Wilfried Matthis

Wilfried Matthis 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).

  • Patent number: 10779863
    Abstract: A coupling device is provided for coupling a rod to a bone anchoring element. The coupling device includes a receiving part having a first end, a second end, a central axis extending through the first end and the second end, and a channel for receiving a rod. The receiving part defines an accommodation space for accommodating a head of a bone anchoring element, the accommodation space having an opening for inserting the head. The coupling device further includes a pressure element arranged at least partially in the accommodation space, the pressure element having a flexible portion to clamp an inserted head, and a clamping element extending at least partially around the flexible portion of the pressure element. The clamping element is configured to move from a first position to a second position in which the clamping element exerts a clamping force onto the pressure element, where the movement includes rotating the clamping element around the central axis.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: September 22, 2020
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Timo Biedermann, Wilfried Matthis
  • Publication number: 20200268418
    Abstract: A receiving part of a bone anchoring device is provided, where the receiving part includes a first end, a second end opposite to the first end, a central axis extending through the first end and the second end, and a substantially U-shaped-recess adjacent to the first end for receiving a spinal fixation element. The substantially U-shaped recess forms two free legs. The receiving part also includes a bore extending from the first end towards the second end and in communication with the substantially U-shaped recess. A groove is provided in an outer surface of each of the legs, where the groove has a first end and a second end and extends in a circumferential direction in an arcuate shape between the first end of the groove and the second end of the groove.
    Type: Application
    Filed: March 3, 2020
    Publication date: August 27, 2020
    Inventors: Lutz BIEDERMANN, Timo BIEDERMANN, Wilfried MATTHIS
  • Patent number: 10751101
    Abstract: A dynamic bone anchor includes an anchor member having first and second ends and a tubular section between the ends, a longitudinal axis extending from the first to second end, an outer surface, and a bone engagement structure for engaging a bone on at least a portion of the outer surface; and a longitudinal core member having a first portion and a second portion configured to be received in the tubular section and to connected to the anchor member, with the first portion configured to be spaced apart from the anchor member and movable with respect to it. The core member is made at least partially of a nickel-titanium (Ni—Ti) based shape memory alloy such that its shape after transitioning from a martensitic to austenitic phase is configured to result in a press-fit connection between the second portion and the anchor member with the second portion in the austenitic phase.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: August 25, 2020
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Wilfried Matthis
  • Patent number: 10751092
    Abstract: A bone anchoring device includes a receiving part including a rod receiving portion with a first end, a second end, and a U-shaped recess for receiving a rod, the recess defining two free legs, and a head receiving portion at the second end for introducing and clamping the head, and a locking ring configured to be arranged around the head receiving portion, the locking ring including an engagement structure for engagement with a tool, the engagement structure defining a width of the locking ring that is greater than a greatest width of the rod receiving portion, wherein the locking ring can assume a locking position exerting a greatest compressive force on the head receiving portion of the receiving part to lock an inserted head, and wherein the locking ring is movable out of the locking position towards the first end of the rod receiving portion.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 25, 2020
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Timo Biedermann, Wilfried Matthis, Berthold Dannecker
  • Patent number: 10722272
    Abstract: A bone anchoring device includes a bone anchoring element with a spherical segment-shaped head, a receiving part configured to couple a rod to the bone anchoring element, and having a top end, a bottom end, a first passage at the bottom end with a first longitudinal axis, and a second passage at the top end with a second longitudinal axis that intersects the first longitudinal axis, a compression element, and a locking element. The receiving part also has a recess for the rod, the recess extending from the top end towards the bottom end and having a bottom that extends along an axis that is perpendicular to the second longitudinal axis. The receiving part or the compression element further has a seat. The compression element is configured to move along the first longitudinal axis while the locking element is configured to move along the second longitudinal axis.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: July 28, 2020
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Wilfried Matthis
  • Publication number: 20200229849
    Abstract: An instrument for holding and inserting a bone anchor into a bone is provided, where the bone anchor includes a shank for anchoring in the bone and a head. The instrument includes a holding member for holding the head of the bone anchor and has a plurality of arms configured to at least partially encompass the head, where the arms include an inner surface forming a seat for the head. The instrument also includes a drive shaft for engaging the head of the bone anchor and defining a longitudinal axis of the instrument. The instrument further includes a displacement member configured to act on the holding member. The holding member can assume a first configuration in which it is configured to permit the head to enter the seat and a second configuration in which it is configured to hold the head in the seat.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 23, 2020
    Inventors: Lutz Biedermann, Wilfried Matthis, Timo Biedermann
  • Publication number: 20200205868
    Abstract: A bone nail (1) for the heel includes: a front portion (2) determined for insertion into one or more bones (14, 15, 16) or bone fragments of the heel and having a tip (3), and an arc-shaped main portion (4) extending from the front portion (2) and having a rear end (5), wherein the main portion (4) includes a tapered shape such that a cross sectional diameter of the main portion (4) within at least one first section (20) increases towards the rear end (5). According to embodiments, a curvature of the arc-shaped main portion (4) includes a radius of curvature rc which amounts to at least 130 mm. According to other embodiments, the tapered shape is a conical shape.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Inventors: Lutz Biedermann, Wilfried Matthis, Tobias Hägle, Kaj Klaue
  • Patent number: 10682169
    Abstract: A bone screw is provided including a tubular body and a head as separate parts. The tubular body has a first end, a second end, a tubular wall defining a cavity and a plurality of openings extending through the tubular wall into the cavity. The tubular body also includes a continuous exterior bone thread on an exterior tubular surface of the tubular wall. The continuous exterior bone thread extends for at least one full revolution about the tubular surface. The head defines an inner bore and includes an engagement structure to engage with a driver to advance the bone screw in the bone when a rotating force from the driver is applied to the engagement structure in a first direction, and a connection structure to connect to the tubular body at the first end.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: June 16, 2020
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Wilfried Matthis, Helmar Rapp
  • Patent number: 10610263
    Abstract: A receiving part of a bone anchoring device is provided, where the receiving part includes a first end, a second end opposite to the first end, a central axis extending through the first end and the second end, and a substantially U-shaped-recess adjacent to the first end for receiving a spinal fixation element. The substantially U-shaped recess forms two free legs. The receiving part also includes a bore extending from the first end towards the second end and in communication with the substantially U-shaped recess. A groove is provided in an outer surface of each of the legs, where the groove has a first end and a second end and extends in a circumferential direction in an arcuate shape between the first end of the groove and the second end of the groove.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: April 7, 2020
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Timo Biedermann, Wilfried Matthis
  • Patent number: 10568668
    Abstract: An instrument for holding and inserting a bone anchor into a bone is provided, where the bone anchor includes a shank for anchoring in the bone and a head. The instrument includes a holding member for holding the head of the bone anchor and has a plurality of arms configured to at least partially encompass the head, where the arms include an inner surface forming a seat for the head. The instrument also includes a drive shaft for engaging the head of the bone anchor and defining a longitudinal axis of the instrument. The instrument further includes a displacement member configured to act on the holding member. The holding member can assume a first configuration in which it is configured to permit the head to enter the seat and a second configuration in which it is configured to hold the head in the seat.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: February 25, 2020
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Wilfried Matthis, Timo Biedermann
  • Publication number: 20200054364
    Abstract: A bone anchoring device includes an anchoring element having a shaft and a head, a receiving part having a coaxial bore and a seat for receiving the head, a pressure element configured to be movable within the bore, and a preload element being positionable between the head and the pressure element. When the head is inserted in the receiving part, the head is pivotable with respect to the receiving part, and can be locked at an angle relative to the receiving part by the pressure element. The pressure element can assume a position relative to the receiving part where the pressure element and the preload element are in direct contact, and where the pressure element exerts a force onto the head via the preload element to maintain one of a plurality of releasable angular positions between the head and the receiving part by friction before locking the head.
    Type: Application
    Filed: August 27, 2019
    Publication date: February 20, 2020
    Inventors: Lutz Biedermann, Wilfried Matthis, Martin Meer
  • Publication number: 20200038065
    Abstract: A receiving part for receiving a rod for coupling the rod to a bone anchoring element includes a receiving part body including a first end and a second end, and having a substantially U-shaped recess at the first end forming a channel for receiving the rod, and an accommodation space for accommodating a head of the bone anchoring element, the accommodation space having an opening at the second end for introducing the head; and a pressure element arranged at least partially in the accommodation space, the pressure element including a first section having a second recess for receiving the rod, and a second section having a flexible portion to clamp the head, the first section and the second section being fixed relative to each other, wherein said pressure element is insertable from the opening.
    Type: Application
    Filed: August 12, 2019
    Publication date: February 6, 2020
    Inventors: Lutz Biedermann, Wilfried Matthis
  • Publication number: 20200038066
    Abstract: A coupling device for coupling a bone anchor to a rod includes a receiving part having a longitudinal axis, a channel for receiving a rod, and an accommodation space for holding a head of a bone anchor, a pressure member having a first portion for holding and clamping the head and a deformable portion with a free end, and a locking member. The pressure member is expandable for inserting the head and adjustable to lock the head. When the deformable portion is at a first configuration, the free end of the deformable portion is supported by the receiving part, and at least part of the locking member is movable to exert a force on the deformable portion for adjusting the deformable portion to a second configuration where at least part of the deformable portion is farther away from the longitudinal axis compared to the first configuration.
    Type: Application
    Filed: August 19, 2019
    Publication date: February 6, 2020
    Inventors: Timo Biedermann, Wilfried Matthis, Bernd Fischer
  • Patent number: 10548650
    Abstract: A bone nail (1) for the heel includes: a front portion (2) determined for insertion into one or more bones (14, 15, 16) or bone fragments of the heel and having a tip (3), and an arc-shaped main portion (4) extending from the front portion (2) and having a rear end (5), wherein the main portion (4) includes a tapered shape such that a cross sectional diameter of the main portion (4) within at least one first section (20) increases towards the rear end (5). According to embodiments, a curvature of the arc-shaped main portion (4) includes a radius of curvature rc which amounts to at least 130 mm. According to other embodiments, the tapered shape is a conical shape.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: February 4, 2020
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Wilfried Matthis, Tobias Hägle, Kaj Klaue
  • Publication number: 20200008844
    Abstract: A coupling assembly for coupling a rod to a bone anchoring element is provided, wherein the coupling assembly includes a receiving part having a first end, a second end, a central axis extending through the first end and second end, an accommodation space for accommodating a head of an anchoring element, a bore extending from the accommodation space to the first end, and a recess for receiving a rod. The accommodation space has an opening at the second end sized to permit insertion of a head of the bone anchoring element. The coupling assembly further includes a retainer element configured to be positioned at least partially in the accommodation space and being radially expandable and/or compressible to allow retaining a head inserted through the opening. The retainer element is held in position adjacent the opening by an engagement structure provided at or in the accommodation space.
    Type: Application
    Filed: July 22, 2019
    Publication date: January 9, 2020
    Inventors: Lutz BIEDERMANN, Bernd FISCHER, Wilfried MATTHIS
  • Publication number: 20190365422
    Abstract: A screw element includes a screw axis, a shank for inserting in a bone, and a drive portion for engaging a screw driver. The drive portion includes a first wall defining a first recess and a second wall defining a second recess. Drive grooves are formed in the first wall and extend parallel to the screw axis. The second wall extends axially from a free end portion of the screw element to the first wall and has an inner diameter that continuously increases from the first wall towards the free end portion. A plurality of guide grooves are formed in the second wall at circumferential positions corresponding respectively to circumferential positions of the drive grooves. The guide grooves extend further radially from the screw axis than the drive grooves and guide the screw driver from the free end portion of the screw element to the drive grooves.
    Type: Application
    Filed: May 20, 2019
    Publication date: December 5, 2019
    Inventors: Lutz Biedermann, Dimosthenis Dandanopoulos, Wilfried Matthis
  • Publication number: 20190365429
    Abstract: A coupling assembly for coupling a rod to a bone anchoring element includes a receiving part with an accommodation space defining an opening for inserting and accommodating a head of the bone anchoring element, and a pressure element having a cap portion configured to hold the head. In an inserting position, the cap portion of the pressure element is expandable in the accommodation space of the receiving part, and a first retaining element is configured to prevent the pressure element from moving towards a first end of the receiving part. In a pre-locking position, the head is held in the cap portion of the pressure element and is pivotable in the receiving part, while the cap portion is restricted from expanding to prevent removal of the head, and where a second retaining element is configured to prevent the pressure element from moving from the pre-locking position towards the inserting position.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 5, 2019
    Inventors: Lutz Biedermann, Wilfried Matthis
  • Publication number: 20190350630
    Abstract: A bone screw is provided including a longitudinal core member having a longitudinal axis defining a longitudinal direction and having an outer surface and a helical groove in the outer surface, the groove being defined by opposed sidewalls; and a helical thread body configured to be accommodated in the groove. When the thread body is assembled in the groove of the core member and when the core member is straight, the thread body is configured to abut one opposed sidewall without abutting the other opposed sidewall along a full turn of the thread body, the thread body is configured to slide in the groove between the opposed sidewalls of the helical groove parallel to the longitudinal axis, and a first portion of the thread body that is outside the helical groove has a height greater than a second portion of the thread body that is in the helical groove.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 21, 2019
    Inventors: Lutz Biedermann, Wilfried Matthis, Bernd Fischer
  • Publication number: 20190336175
    Abstract: A polyaxial bone anchoring device includes a bone anchoring element having a head and a shaft, a receiving part having a head receiving portion, a rod receiving portion, and a bore having a bore axis, and a pressure member movable in the bore and having a first surface for engaging the head, wherein the pressure member is movable to a first position where friction between the first surface and the head generates a preload on the head to maintain the shaft at a temporary angular position relative to the receiving part, and wherein the pressure member is configured to engage the receiving part to generate a holding force for holding the pressure member at the first position without a positive lock, and wherein the pressure member is movable in and out of the first position by applying an axial force on the pressure member greater than the holding force.
    Type: Application
    Filed: May 20, 2019
    Publication date: November 7, 2019
    Inventors: Wilfried Matthis, Martin Meer, Lutz Biedermann
  • Patent number: 10448976
    Abstract: A polyaxial bone anchoring device includes a bone anchoring element having a head and a shaft, a receiving part having a head receiving portion, a rod receiving portion, and a bore having a bore axis, and a pressure member movable in the bore and having a first surface for engaging the head, wherein the pressure member is movable to a first position where friction between the first surface and the head generates a preload on the head to maintain the shaft at a temporary angular position relative to the receiving part, and wherein the pressure member is configured to engage the receiving part to generate a holding force for holding the pressure member at the first position without a positive lock, and wherein the pressure member is movable in and out of the first position by applying an axial force on the pressure member greater than the holding force.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: October 22, 2019
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Wilfried Matthis, Martin Meer, Lutz Biedermann