Patents Assigned to Waldemar Link GmbH & Co. KG
  • 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
  • Publication number: 20190099275
    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: Application
    Filed: March 6, 2017
    Publication date: April 4, 2019
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Helmut D. LINK, Jörg EWALD, Günther JENDRO, Andreas DÄNIKE, Udo BORCHERS
  • Publication number: 20190070008
    Abstract: An augment device includes a hollow sleeve surrounding a channel extending through the hollow sleeve from a top to a bottom of the hollow sleeve, the hollow sleeve comprising a wall having an inner face and an outer face. The hollow sleeve includes at least one bending joint, the bending joint being configured for compressing the channel. Thereby the hollow sleeve may be compressed under an external force, leading to a decreased circumference and width of the hollow sleeve. This leads to a gap between the perimeter of the augment device and surrounding bone material, breaking any connections. By virtue of this, a much facilitated removal of the augment device can be achieved. Further, an extraction tool includes grippers for engaging and compressing the augment device, and further instruments, particularly a jig, for achieving an effective removal.
    Type: Application
    Filed: June 24, 2016
    Publication date: March 7, 2019
    Applicant: WALDEMAR LINK GmbH & Co. KG
    Inventors: Eckhard BAUER, Helmut D. LINK
  • Patent number: 10194925
    Abstract: A medical tool system for providing a trapezoidal recess in a joint surface of a bone, including a milling tool rotatable about a tool axis and having milling edges active on the circumferential side and milling edges that are active at an axial end with respect to the tool axis, and a template part fixable to the joint surface for guiding the milling too. A stop limits a penetration depth of the milling tool. The template part has a base element with a slide guide and a slide which can be moved in the slide guide between two end stops along a guide path lying on a guide plane. A guide channel which runs diagonally to the guide plane and leads to a milling tool receiving area directed transversely to the tool axis is formed in the slide such that the milling tool can rotate freely about the tool axis.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: February 5, 2019
    Assignee: Waldemar Link GmbH & Co. KG
    Inventor: Amos Balzarini
  • Patent number: 10166029
    Abstract: A jig for determining a patient-adapted implant size of a femoral implant of a knee endoprosthesis. The jig has a main body, a probe part movable relative to the main body along a measuring direction. The probe part has an arm with a tip placeable on an anterior reference point of the femur's distal end, two contact pieces for placing on and referencing the medial and lateral posterior condyle of the femur's distal end, and at least one scale and pointer for indicating the probe part's position in the measuring direction relative to the contact pieces. The distance of the probe tip from the contact pieces is adjustable such that the distance is different with respect to the two contact pieces and, for each contact piece, a dedicated scale and an associated pointer are provided for the indication of the probe part's position relative to the respective contact piece.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: January 1, 2019
    Assignee: Waldemar Link GmbH & Co. KG
    Inventor: Klaus Dmuschewsky
  • Publication number: 20180221157
    Abstract: The present invention provides a method for treating a polymer workpiece (1) for use in a joint implant. It comprises the steps of placing the polymer workpiece in an explosion chamber, introducing a combustible gas mixture into the explosion chamber and igniting the combustible gas mixture. Igniting the gas mixture in the explosion chamber produces a temperature that lies above the melting point of a polymer of the polymer workpiece.
    Type: Application
    Filed: July 27, 2016
    Publication date: August 9, 2018
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Helmut D. LINK, Carsten Schöttler
  • Publication number: 20180214273
    Abstract: The present invention provides a joint implant component as well as a method for the implantation thereof. The joint implant component (1), in particular of a hip endoprosthesis, has a proximal joint section (10), a distal anchoring section (30) and a transition section (20) having a fixation structure (21) between the joint section (10) and the anchoring section (30), the fixation structure being arranged in at least one part of the perimeter of the transition section (20) as an elongate recess (22) for guiding suture material.
    Type: Application
    Filed: February 2, 2018
    Publication date: August 2, 2018
    Applicant: Waldemar Link GmbH & Co. KG
    Inventor: Helmut D. Link
  • Publication number: 20180200061
    Abstract: An augment device for a joint endoprosthesis, the device including a sleeve surrounding a channel extending through the sleeve. The sleeve is formed of porous material for ingrowth of bony material, the sleeve comprising an inner face and an outer face. The sleeve further comprises a wall surrounding the channel, the wall being made of solid material and forming a sandwich structure with the porous material, wherein the wall forms a bulkhead between the inner face and the outer face. Thereby, the bulkhead wall will stop inflow of any cement across the sleeve from its inner to its outer face. The porous material on the outer face will be kept free from cement and its capability to promote bone ingrowth is reliably preserved. The augment devices are preferably provided as a set having different sizes and straight or stepped bottoms for improved versatility and maximum preservation of natural bone matter.
    Type: Application
    Filed: June 24, 2016
    Publication date: July 19, 2018
    Applicant: WALDEMAR LINK GmbH & Co. KG
    Inventors: Eckhard BAUER, Helmut D. LINK
  • Publication number: 20180193152
    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: Application
    Filed: June 24, 2016
    Publication date: July 12, 2018
    Applicant: WALDEMAR LINK GmbH & Co. KG
    Inventor: Eckhard BAUER
  • Publication number: 20180008420
    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: Application
    Filed: December 11, 2015
    Publication date: January 11, 2018
    Applicant: Waldemar Link GmbH & Co. KG
    Inventors: Helmut LINK, Günther JENDRO, Georg GRADL
  • Patent number: 9855061
    Abstract: Equipment for inserting a joint prosthesis, in particular a femur component of a knee prosthesis, comprises a base frame having a guiding plate and a laterally protruding primary gage, a fastening device on the bone, and a curved milling gage having a main body and a guiding piece, which can be moved along a curved guiding path relative to the main body and has a receptacle for an abrasive tool. Furthermore, the equipment comprises an aligning device, which places the curved milling gage in a clearly defined relative position when the curved milling gage is inserted into the base frame. Due to the precise positioning in conjunction with the curved guiding path, the mounting seat can be prepared easily without damaging surrounding tissue. Thus, even large and complexly shaped prostheses, such as knee joint prosthesis, can be reproducibly inserted in an easy and safe manner.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: January 2, 2018
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Balzarini Amos, Marco Iredi, Klaus Dmuschewsky
  • Patent number: 9855059
    Abstract: A holder for a medical instrument having a quick coupling for receiving a connection end of the instrument's shaft. The quick coupling has a first coupling element having a first axial through-hole for the connection end and a second coupling element having a second axial through-hole for the connection end. The second coupling element is movable relative to the first coupling element in a direction crosswise to the axial direction of the through-holes from a locked position, in which the through-holes are offset so that an edge of the second through-hole engages behind an undercut on the shaft's connection end in a locking manner, to a release position, in which the through-holes lie in alignment and the connection end is freely guidable through both through-holes. A spring bridge connects the first and second coupling elements together and preloads the first and second coupling elements into the locked position.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: January 2, 2018
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Klaus Dmuschewsky, Amos Balzarini, Dörte Freisberg
  • Patent number: 9814529
    Abstract: An instrument holder and grip for detachably connecting to a medical instrument, which has a basic body with a grip section and a connecting section for connecting to the medical instrument. A locking means movable from a release position into a locking position is provided in the connecting section for locking the medical instrument on the connecting section. The instrument holder and grip has lever elements connected together and each mounted pivotably on the basic body. A first element has an actuating lever arm and a second element moves the locking means. The holder permits significantly simplified cleaning and sterilization after use, while continuing to provide a reliable holding effect on the instrument. It is possible to dismantle the instrument holder into a few easily cleaned parts with a few simple actions and without small parts such as connecting pins or similar.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: November 14, 2017
    Assignee: Waldemar Link GmbH & Co. KG
    Inventor: Klaus Dmuschewsky
  • Patent number: 9744045
    Abstract: An endoprosthesis for partial replacement of the human pelvic bone (B) in the region of the acetabulum and of the ilium (II), by means of which a single prosthesis provides a bone replacement and stabilization in the region of the acetabulum and in defective sections of the ilium (II). The endoprosthesis, is suitable for restoring one single piece, even for serious bone defects in the pelvic region, and for maintaining or reshaping articulation and mobility in this region. The endoprosthesis includes a first section having a first partially spherical recess that serves as a replacement for the acetabulum, and a second section for the contact elements on the ilium (II). The second section extends from the first section along an edge of the first partially spherical recess in a flattened manner and is integrally connected to the first section. A second partially spherical recess is provided in the second section.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: August 29, 2017
    Assignee: Waldemar Link GmbH & Co. KG
    Inventor: Helmut D Link
  • Patent number: 9724117
    Abstract: A medical sliding-shaft instrument having a first handle arm, a second handle arm pivotably mounted to the first handle arm, a shaft connected to the first handle arm and a slider coupleable to the second handle arm and axially displaceable on the shaft. The slider is removable from the shaft and is guided along a sliding path. A cross-pin couples the second handle arm to the slider and is received in a slot defined by first and second legs of the second handle arm. The first leg is a resilient tongue moveable transversely to a longitudinal axis of the first leg and outwardly away from the second leg. The second handle arm is positioned so that the cross pin lies in the slot. The cross pin is covered and held back by the first leg and is released by applying a force and displacing the end of the first leg.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: August 8, 2017
    Assignee: Waldemar Link GmbH & Co. KG
    Inventor: Klaus Dmuschewsky
  • Publication number: 20170172745
    Abstract: The invention relates to an implant component having at least one connection section. The connection section is coated at least partially with a TiNb coating and said coating has a thickness of 1-20 ?m, preferably 1-6 ?m. The invention also relates to a modular endoprosthesis comprising an implant component of this type.
    Type: Application
    Filed: March 25, 2015
    Publication date: June 22, 2017
    Applicant: Waldemar Link GmbH & Co. KG
    Inventor: Helmut D. LINK
  • Patent number: 9675730
    Abstract: The invention relates to a joint prosthesis having a shaft made from a titanium alloy, in which at least the shaft is investment cast and has a body-centered cubic crystal structure. A titanium alloy having this crystal structure (known as ?-titanium alloy) has an advantageously low modulus of elasticity which is well matched to the physiological demands of joint prostheses. Furthermore, implementation as a shaped casting allows a complex shape to be achieved. It is particularly embodied as a femoral prosthesis for an artificial hip joint, which has an elongate shaft with grooves and sawtooth-like projections for bone anchoring.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: June 13, 2017
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Sevki Baliktay, Arnold Keller
  • Patent number: 9662130
    Abstract: A pair of surgical forceps which can be taken apart and which includes a handle, a pivot joint with a rotational axis and a jaw. It further includes two releasably coupled forceps parts, each of which has a pin-less pivot joint element. The first pivot joint element has a first guide rail and a first guide recess. The second pivot joint element has a second guide rail and a second guide recess. The guide rails, which engage in an undercut of the guide recesses on the pivot joint elements, form a sliding guide for the pivot joint. The first pivot joint element has a first thickening element and the second pivot joint element has a second surface element. In a safety position the first thickening element interacts with the second surface element by means of jamming.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: May 30, 2017
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Carolin Bartels, Klaus Dmuschewsky