Patents Assigned to Waldemar Link GmbH & Co. KG
  • Patent number: 11266450
    Abstract: The invention relates to an arthrodesis plate for the stiffening of joints, in particular finger joints, comprising a proximal and distal anchoring region which are connected to one another in a mechanically rigid manner, characterised in that at least one outer contour of one of the two anchoring regions has a cross-section which is undulating, for example roof-shaped, or is provided with alternating crests and troughs by means of coating, and/or has a transversal-sagittal cross-section.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: March 8, 2022
    Assignee: WALDEMAR LINK GmbH & Co. KG
    Inventors: Helmut D. Link, Jan Teuber
  • Publication number: 20220015914
    Abstract: A knee joint endoprosthesis set comprising modular knee joint endoprostheses in different sizes. Each knee joint endoprosthesis comprises a tibial component (2). The femoral component (3) comprises a joint element for articulated cooperation with the tibial component and comprises a shaft (5) for anchoring in the femur. The set comprises shafts in different sizes. In the femoral component (3), the shape of the shafts tapers from a distal end (51), facing toward the joint element, to a proximal free end (52) of the shaft. An oval cross section is provided at the distal end (51), and a round cross section is provided at the proximal free end (52) of the shaft. An ovality defined by the oval cross section increases as the size of the shafts increases. The different sizes are preferably graded according to the ovality. The set permits excellent adaptation to the particular medullary canal by means of the different sizes.
    Type: Application
    Filed: December 10, 2019
    Publication date: January 20, 2022
    Applicant: WALDEMAR LINK GmbH & Co. KG
    Inventors: Harm-Iven Jensen, Helmut D. Link
  • Patent number: 11213399
    Abstract: The invention relates to a revision prosthesis shaft of a revision joint endoprosthesis for anchoring in an elongate bone (9), in particular femur. The surface is designed for adhesive agent-free fastening in the proximal epimetaphysis (91) and the diaphysis (92) of the bone. According to the invention, a distal epimetaphyseal extension (2) is provided at the far end of the shaft (12), the tip of which extension reaches into the distal epimetaphysis (93) of the bone. The extension (2) is designed for fastening in the distal epimetaphysis (93) by means of an adhesive agent (3), in particular bone cement. The invention combines the advantages of cement-free fastening, namely of the shaft in itself in the diaphysis (92), with the advantages of cemented fastening, namely of the extension in the distal epimetaphysis (93). Even in difficult cases in which sufficient hold previously could not be achieved for lack of fastening distance in the diaphysis, stable anchoring can thus be achieved.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: January 4, 2022
    Assignee: WALDEMAR LINK GmbH & Co. KG
    Inventor: Helmut D. Link
  • Publication number: 20210378829
    Abstract: The present invention discloses an intermediate segment (20) for arrangement between a concave implantation surface (14) of a joint component (10), particularly a femoral prosthesis, and bone tissue. The intermediate segment (20) comprises an intermediate segment body (23) with at least one side (24, 25) facing the joint component (10), wherein one (24) of the at least one side facing the joint component is convex. In addition, the intermediate segment (20) comprises a locking mechanism for attaching the intermediate segment to the joint component with at least a first (21) and a second (32) latching element, wherein at least one of the latching elements (21, 32) is movable. The present invention also relates to a joint component (10) comprising an intermediate segment (20) and a method for securing an intermediate segment (20) to a joint component (10).
    Type: Application
    Filed: November 15, 2017
    Publication date: December 9, 2021
    Applicant: Waldemar Link GmbH & Co. KG
    Inventor: Klaus Dmuschewsky
  • Patent number: 11166820
    Abstract: A bone implant includes a body having a porous structure and having a size and shape configured for fitting to a bone, preferably in a bone defect. The porous structure is comprised of regularly arranged elementary cells whose interior spaces form interconnected pores, the elementary cells are formed by basic elements arranged in layers, wherein the basic elements are shaped like tetrapods, the tetrapods in each layer being arranged in parallel orientation and being positioned in-layer rotated with respect to tetrapods of an adjacent layer. The layers with rotated and non-rotated tetrapods are alternatingly arranged. Thereby a porous structure can be achieved which features improved mechanical characteristics, leading to improved biocompatibility.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: November 9, 2021
    Assignee: WALDEMAR LINK GMBH & CO. KG
    Inventor: Eckhard Bauer
  • Publication number: 20210128782
    Abstract: A coating for an implant component, in particular a component of a spinal implant, is provided. The coating is a ceramic titanium nitride coating comprising an at % content of 5 to 30 At % of Ag in addition to an at % content of Ti and an at % content of N.
    Type: Application
    Filed: April 30, 2019
    Publication date: May 6, 2021
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Helmut D. Link, Richard Csaszar
  • Patent number: 10973643
    Abstract: A joint configuration is proposed for a joint endoprosthesis forming a hinge joint, comprising a joint receptacle, which has a joint receptacle surface and a receptacle locking structure, and a joint body, which is receivable in the joint receptacle and has a joint body surface and a body locking structure. The joint receptacle surface and the joint body surface are movable in relation to one another into a position in which the receptacle locking structure and the body locking structure assume a locked position, in which they can be engaged for a locked state between the joint receptacle and the joint body.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: April 13, 2021
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Helmut D. Link, Jörg Ewald, Günther Jendro, Andreas Dänike, Udo Borchers
  • Publication number: 20210093455
    Abstract: The present invention provides an active substance application insert (10, 110) for an implant (30), in particular a joint implant. The active substance application insert has a main body (11), an active substance chamber (12) formed in the main body, an application side (13, 113) which forms a front face of the active substance chamber, wherein the application side has a plurality of application openings (14, 114), and a securing means (15) with which the main body can be detachably secured in the implant. In a state in which the main body is inserted into the implant, the application side faces outwards relative to the implant, such that the application openings connect the active substance chamber to the environment of the implant. Furthermore, within the scope of the present invention an implant (30) with a recess (31) for receiving an active substance application insert (10, 110) is provided.
    Type: Application
    Filed: March 19, 2019
    Publication date: April 1, 2021
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Rodolfo Capanna, Helmut D. Link
  • Patent number: 10952860
    Abstract: Provided is a joint replacement with a joint socket (10) having a concave joint surface (11), and with a joint insert (20) having a concave joint surface (21) and a convex joint surface (22) which are each delimited by a peripheral edge (23, 24). The convex joint surface (22) of the joint insert (20) is designed, in the assembled state, to form a first partial joint with the concave joint surface (11) of the joint socket (10). Moreover, the concave joint surface (21) of the joint insert (20) is designed, in the assembled state, to form a second partial joint with the convex joint surface (32) of a joint head (30). The joint socket (10) and the joint insert (20) each have a securing means (12, 25, 26) for preventing dislocation of the joint replacement.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: March 23, 2021
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Helmut Link, Günther Jendro, Georg Gradl
  • Patent number: 10813767
    Abstract: A reinforcing implant anchors shafts of two prostheses which are arranged opposite each other on an elongated bone, in particular a femur. The implant has a generally elongated shaft-like shape and a receiving sleeve at both ends for a respective anchoring shaft and a disconnectable coupling piece lying between the receiving sleeves for a rigid connection. In this manner, a force bridge is formed between the two anchoring shafts so that the bone is no longer subjected to the force transmission in particular in the sensitive intermediate region between the two anchoring shafts.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: October 27, 2020
    Assignee: WALDEMAR LINK GmbH & Co. KG
    Inventor: Helmut D. Link
  • Patent number: 10813674
    Abstract: The invention relates to a fastening element for preventing unwanted release of a connection between the fastening element and a counter-piece. The fastening element is designed to come into engagement with the counter-piece through a rotary movement of the fastening element about an axis of rotation in a connection direction. Such fastening elements are suitable for use in a wide range of technical fields, for example the automotive industry, household electronics and medical technology, in particular in the field of instruments for implants or prostheses and modular systems of implants or prostheses.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: October 27, 2020
    Assignee: Waldemar Link GmbH & Co. KG
    Inventor: Klaus Dmuschewsky
  • Publication number: 20200330235
    Abstract: Implantable drug-eluting device (1) comprising a microporous structure (2) having regularly arranged pores (4, 5) in at least two different uniform sizes, and manufacturing method. The pores are configured for receiving a drug (9) and are being connected by interconnections (6, 7). Interconnections (6) originating from pores (4) of a first size have a first elution area and interconnections (7) originating from pores (5) of a second size have a second elution area. The interconnections convey the drug (9) to a surface of the device for elution to surrounding tissue. The ratio between the first and the second elution areas is predefined and selectable. The differently sized elution areas provide for different outflow rates. This allows for simple but reliable dispensing of drugs at positively controlled and well determined rates. Particularly, this enables a single implantable device to dispense drugs over preselectable durations of time, like short-term or long-term.
    Type: Application
    Filed: October 11, 2018
    Publication date: October 22, 2020
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Eckhard Bauer, Helmut D. Link
  • Publication number: 20200306049
    Abstract: The invention relates to an endoprosthesis shaft system for elongate bones, comprising an anchoring part (10) and a shaft (1), which is formed from module elements that can be coupled by means of a plug-in connection (45), wherein a mutual rotation of the elements along the shaft (1) is adjustable and is blocked by means of an anti-rotation mechanism. In order to adjust the rotation, a rotation piece (5) is provided as a further module element, which has a self-contained rotation adjustment device (6) and a clamping device (7) as a mechanism for blocking the rotation. The rotation piece (5) comprises two end faces for the plug-in connection (45) and a sleeve (77). The invention provides, with the rotation piece, a particular module element for the shaft, which as a structural unit allows both an adjustment of the rotation and a blocking against undesired rotation in a self-contained unit.
    Type: Application
    Filed: December 11, 2018
    Publication date: October 1, 2020
    Applicant: WALDEMAR LINK GmbH & Co. KG
    Inventors: Helmut D. Link, Udo Borchers, Gunnar Erb
  • Publication number: 20200179019
    Abstract: The invention relates to an arthrodesis plate for the stiffening of joints, in particular finger joints, comprising a proximal and distal anchoring region which are connected to one another in a mechanically rigid manner, characterised in that at least one outer contour of one of the two anchoring regions has a cross-section which is undulating, for example roof-shaped, or is provided with alternating crests and troughs by means of coating, and/or has a transversal-sagittal cross-section.
    Type: Application
    Filed: March 9, 2018
    Publication date: June 11, 2020
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Helmut D. Link, Jan Teuber
  • Patent number: 10675097
    Abstract: A handheld surgical tool includes a handle, an instrument shaft, and a navigation device, which includes at least one sensor unit for sensing positional data, a computing unit configured to determine a position in space based on signals of the sensor unit, at least one set key and a position memory configured to store a data set for a position upon activation of the at least one set key. A comparator is operatively connected to the position memory for comparing an actual position against a stored position in at least two different operation modes and for generation of a deviation signal, wherein operation modes differ in that a first mode is configured for a reduced comparison only which lacks at least one spatial dimension. A feedback device is provided supplied with the deviation signal and being configured to indicate direction and preferably magnitude of any deviation.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: June 9, 2020
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Helmut D. Link, Riccardo Signoretti
  • Publication number: 20200146828
    Abstract: The invention relates to a connecting sleeve for anchoring shafts of two oppositely arranged prostheses, preferably on an elongate bone such as a femur or humerus. The reinforcing sleeve comprises two receiving bushes (1, 2) for one prosthesis shaft each and comprises a separable coupling region (3) arranged therebetween for connection in such a manner as to resist shear forces and rotation. According to the invention, each receiving bush (1, 2) has, on the side thereof facing the coupling region, one fork (31, 32) of a pair of forks that interact with each other, and a fitting block (4) is arranged on a base of the fork, the lateral surfaces (44) of which fitting block have a distance that corresponds to an inner width of the fork, and the lateral surfaces (44) are designed to contact flanks of the fork in a planar manner, at least one fastening screw (5) being arranged transversely through the fork. The fork connection is simpler to produce than the known wedge connection and yet is sufficiently robust.
    Type: Application
    Filed: March 29, 2018
    Publication date: May 14, 2020
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Helmut D. Link, Udo Borchers
  • Publication number: 20200060832
    Abstract: The invention relates to a revision prosthesis shaft of a revision joint endoprosthesis for anchoring in an elongate bone (9), in particular femur. The surface is designed for adhesive agent-free fastening in the proximal epimetaphysis (91) and the diaphysis (92) of the bone. According to the invention, a distal epimetaphyseal extension (2) is provided at the far end of the shaft (12), the tip of which extension reaches into the distal epimetaphysis (93) of the bone. The extension (2) is designed for fastening in the distal epimetaphysis (93) by means of an adhesive agent (3), in particular bone cement. The invention combines the advantages of cement-free fastening, namely of the shaft in itself in the diaphysis (92), with the advantages of cemented fastening, namely of the extension in the distal epimetaphysis (93). Even in difficult cases in which sufficient hold previously could not be achieved for lack of fastening distance in the diaphysis, stable anchoring can thus be achieved.
    Type: Application
    Filed: December 5, 2017
    Publication date: February 27, 2020
    Applicant: Waldemar Link GmbH & Co. KG
    Inventor: Helmut D. Link
  • Patent number: 10568748
    Abstract: The invention relates to a connection device for connecting a first and a second prosthesis part, in particular of a tibial and a femoral trial prosthesis for trial arrangement on the corresponding bones, wherein the connection device has a first connection element and a second connection element. The first connection element has inner walls, serving as a guide, and a mating piece and serves for arrangement on the first prosthesis part, and the second connection element is enclosed at least in part by the inner walls of the connection element and is movable in a displacement direction along the inner walls relative to the first connection element and has a groove for receiving a portion of the second prosthesis part.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: February 25, 2020
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Dörte Asmus, Klaus Dmuschewsky
  • Publication number: 20190380789
    Abstract: A surgical navigation system for providing computer-aided surgery. The surgical navigation system includes a handheld surgical tool with computer-aided navigation, an imaging device, an alignment module, and a user interface module. The handheld surgical tool includes at least one sensor for measuring a position of the tool in three dimensions, and at least one set key. A processor and at least one display device are associated with the handheld surgical tool and configured to display a target trajectory of the handheld surgical tool for the surgical procedure.
    Type: Application
    Filed: June 14, 2019
    Publication date: December 19, 2019
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Helmut D. Link, Riccardo Signoretti
  • Publication number: 20190209330
    Abstract: The present invention relates to an implant (10) comprising an implant body having a first surface area (A1, A2, A3, A4) configured for contact with soft connective tissue and a second surface area configured for contact with bone tissue, wherein the first surface area is covered with a coating comprising tantalum and the second surface area is formed by a material, which is different than the one forming the coating.
    Type: Application
    Filed: August 11, 2017
    Publication date: July 11, 2019
    Applicant: Waldemar Link GmbH & Co. KG
    Inventor: Helmut D. Link