Patents by Inventor Hans Grundei

Hans Grundei 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: 8226731
    Abstract: A connection adapter between a rigid transcutaneous implant can be anchored intracorporeally in a femoral stump, and a part of an extracorporeal orthopaedic knee joint. The connection adapter comprises a first coupling part for connection to the transcutaneous implant and a second coupling part for connection to the knee joint. The second coupling can be connected releasably to the first coupling part. A safety coupling is arranged in the interior of the second coupling part and transfers a torsional moment between the first coupling part and the second coupling part and slips through when an adjustable maximum value of the torsional moment is exceeded.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: July 24, 2012
    Assignee: Orthodynamics GmbH
    Inventor: Hans Grundei
  • Publication number: 20110190906
    Abstract: A connection adapter between a rigid transcutaneous implant can be anchored intracorporeally in a femoral stump, and a part of an extracorporeal orthopedic knee joint. The connection adapter comprises a first coupling part for connection to the transcutaneous implant and a second coupling part for connection to the knee joint. The second coupling can be connected releasably to the first coupling part. A safety coupling is arranged in the interior of the second coupling part and transfers a torsional moment between the first coupling part and the second coupling part and slips through when an adjustable maximum value of the torsional moment is exceeded.
    Type: Application
    Filed: January 19, 2009
    Publication date: August 4, 2011
    Inventor: Hans Grundei
  • Publication number: 20100305713
    Abstract: A set for producing an offset resurfacing condyle cap implant for an artificial hip joint is described. The set has a thin-walled metallic cap (1), to be placed onto the hip joint head that has been milled into shape only in polar area (P) and otherwise has been only decartilaged or freshened, with the walls of the metallic cap being steadily enlarged in the cross-sectional view from of 2 mm to 6 mm in thickness in the area of base edge (2), such that an eccentricity results in its external shape and its interior space (I) has first an essentially cylindrical equatorial area (Z) followed in aforementioned polar area (P) by a truncated cone-shaped, conically narrowing area, with several bore holes (4) in its walls, the axes of which run parallel to main axis (H) of cap (1), and at least one peg (5) for centering and load-bearing insertion into bore holes (4) in cap (1).
    Type: Application
    Filed: August 22, 2008
    Publication date: December 2, 2010
    Applicant: ESKA IMPLANTS AG
    Inventor: Hans Grundei
  • Patent number: 7771485
    Abstract: A ball joint or cap for an artificial hip joint is described that is suitable for carrying out a rotating or pivoting motion in an artificial hip joint socket, with a gap being provided for a natural fluid film (synovial fluid) between itself and the artificial hip joint socket, and with regular depressions without interconnecting channels between them being recessed in areas of its surface. It is proposed that its surface in the polar area is smooth and without depressions, that an area is provided in an intermediate area between the smooth polar area and its equator, in which depressions are recessed with hole widths between 1.0 mm to 3.0 mm, that adjacently in the intermediate area in the direction of its base edge, further depressions are recessed, the hole widths of which become steadily smaller, the closer they lie to the base edge, with hole widths between 0.5 mm and 1.0 mm.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: August 10, 2010
    Assignee: ESKA Implants GmbH & Co., KG
    Inventor: Hans Grundei
  • Publication number: 20100191344
    Abstract: Described here is a set for the construction of a resurfacing hip implant. It comprises a thin metal cup for cemented insertion into the natural acetabulum, a thin metal cap for cemented placement upon the natural femoral head, and an inlay which can be placed in the cup of the acetabulum as a sliding partner for the cap for the femoral head. Also described are methods of using and implanting the implant.
    Type: Application
    Filed: March 17, 2010
    Publication date: July 29, 2010
    Applicant: ESKA IMPLANTS GMBH & CO., KG
    Inventors: Hans Grundei, Ludger Gerdesmeyer
  • Patent number: 7628820
    Abstract: A set is provided for creating an offset-resurfacing hip-joint implant. The set includes a 1 to 1.5 mm thick metallic acetabulum shell (1) for insertion into the natural acetabulum, from which only cartilage has been removed, a metallic head cap (2) for placement on the natural hip-joint head, from which only cartilage has been removed, and an inlay (3) for insertion into the acetabulum shell (1) as a sliding partner for the head cap (2). The inlay has a material thickness of 2 to 5 mm. The head cap (2) has a wall thickness which increases constantly from a thickness of 2 mm to 6 mm viewed in cross section in the region of the base edge (6) of the head cap, so that an eccentricity is produced in its outer shape.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: December 8, 2009
    Assignee: ESKA Implants GmbH & Co. KG
    Inventors: Hans Grundei, Ludger Gerdesmeyer
  • Publication number: 20090112330
    Abstract: A ball joint or cap for an artificial hip joint is described that is suitable for carrying out a rotating or pivoting motion in an artificial hip joint socket, with a gap being provided for a natural fluid film (synovial fluid) between itself and the artificial hip joint socket, and with regular depressions without interconnecting channels between them being recessed in areas of its surface. It is proposed that its surface in the polar area is smooth and without depressions, that an area is provided in an intermediate area between the smooth polar area and its equator, in which depressions are recessed with hole widths between 1.0 mm to 3.0 mm, that adjacently in the intermediate area in the direction of its base edge, further depressions are recessed, the hole widths of which become steadily smaller, the closer they lie to the base edge, with hole widths between 0.5 mm and 1.0 mm.
    Type: Application
    Filed: March 20, 2008
    Publication date: April 30, 2009
    Applicant: ESKA Implants GmbH & Co. KG
    Inventor: Hans Grundei
  • Publication number: 20090018666
    Abstract: A set is provided for creating an offset-resurfacing hip-joint implant. The set includes a 1 to 1.5 mm thick metallic acetabulum shell (1) for insertion into the natural acetabulum, from which only cartilage has been removed, a metallic head cap (2) for placement on the natural hip-joint head, from which only cartilage has been removed, and an inlay (3) for insertion into the acetabulum shell (1) as a sliding partner for the head cap (2). The inlay has a material thickness of 2 to 5 mm.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 15, 2009
    Applicant: ESKA IMPLANTS GMBH & CO. KG
    Inventors: Hans Grundei, Ludger Gerdesmeyer
  • Publication number: 20080215160
    Abstract: Described here is a set for the construction of a resurfacing hip implant. It comprises a thin metal cup for cemented insertion into the natural acetabulum, a thin metal cap for cemented placement upon the natural femoral head, and an inlay which can be placed in the cup of the acetabulum as a sliding partner for the cap for the femoral head.
    Type: Application
    Filed: January 12, 2006
    Publication date: September 4, 2008
    Inventors: Hans Grundei, Ludger Gerdesmeyer
  • Publication number: 20070260312
    Abstract: A subcutaneous, intramuscular mounting for a rigid transcutaneous implant is disclosed, which may be fixed intracorporally in a bone stump, comprising a spacer (3) between the implant and an extracorporal coupling device (4) which may be coupled thereto, whereby the spacer (3) is embodied as a rigid bush (5) with a coupling element (6), sealed in the intracorporal direction, to which the extracorporal coupling device may be coupled. According to the invention, the bush (5) widens out significantly from the end (12) thereof facing the extracorporal direction to the end (13) thereof facing the intracorporal direction and comprises a smooth surface such that arthrogenic material can not grow into the surface thereof and as a result of a lack of frictional effects also causes hardly any inflammation.
    Type: Application
    Filed: August 23, 2005
    Publication date: November 8, 2007
    Inventor: Hans Grundei
  • Patent number: 7018420
    Abstract: A subcutaneous, intramuscular bearing (1) for a rigid transcutaneous implant (2) is provided, for anchoring intracorporally in a bone stump and having an intermediate piece (3) between the implant (2) and an extracorporal coupling for coupling on the implant. A rigid bushing (5) is tightly connected to the intermediate piece (3), such that between the wall of the bushing (5) and the intermediate piece (3) an annular space (6) is formed, which is closed in the intracorporal direction, for receiving and setting the extracorporal coupling. The outer wall of the bushing (5) has an open-meshed, three-dimensional lattice structure (8) and a lattice-free distal region having a width B. A spring ring (9) is set in the annular space (6) from the distal end, moved with a telescoping motion, and locked under exertion of its spring effect.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: March 28, 2006
    Assignee: ESKA Implants GmbH & Co.
    Inventor: Hans Grundei
  • Patent number: 7004975
    Abstract: Joint endoprostheses are provides which respectively have a joint part with a metallic core, wherein the metallic core is coated, in regions that roll and/or slide on another joint part during execution of the joint function, with a glass-ceramic composite mixture. In one embodiment, the glass-ceramic has the following composition with approximate amounts in wt. %: Component Amount (wt %) SiO2 45–50% Al2O3 15–20% ZrO2 ?8–12% K2O 0–8% Na2O ??0–7.5% CaO ??0–2.5% TiO2 ??0–1.5% and furthermore a residual amount of up to about 12.5% of MnO2 and/or Fe2O3 and/or Co2O3.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: February 28, 2006
    Assignee: ESKA Implants GmbH & Co.
    Inventor: Hans Grundei
  • Patent number: 6955692
    Abstract: A leg prosthesis adapted to a thigh stump includes an adapter (2) for a knee joint (3), a knee joint (3) mounted on this adapter, and a prosthetic lower leg (4) coupled to the knee joint (3). A prosthetic foot (5) is attached to this prosthetic lower leg and can pivot into a toes-raised foot position. The knee joint (3) upon transition from the extended position to the bent position performs a combined rolling-sliding movement about a pivot axis (6). A force-transmitting element (8) moves the prosthetic foot (5) substantially from the toes-down foot position to the toes-raised foot position during bending of the knee joint (3). Each bending position of the knee joint is transformed by a converter into an unambiguous electrical signal, which is supplied to a programmable control device, which generates a signal used to control an electrically adjustable actuator, which increases or decreases the resistance of the knee joint against or for further bending according to the signal.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: October 18, 2005
    Assignee: ESKA Implants GmbH & Co.
    Inventor: Hans Grundei
  • Publication number: 20050102035
    Abstract: Joint endoprostheses are provides which respectively have a joint part with a metallic core, wherein the metallic core is coated, in regions that roll and/or slide on another joint part during execution of the joint function, with a glass-ceramic composite mixture. In one embodiment, the glass-ceramic has the following composition with approximate amounts in wt. %: Component Amount (wt %) SiO2 45-50% Al2O3 15-20% ZrO2 ?8-12% K2O 0-8% Na2O ??0-7.5% CaO ??0-2.5% TiO2 ??0-1.5% and furthermore a residual amount of up to about 12.5% of MnO2 and/or Fe2O3 and/or Co2O3.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 12, 2005
    Inventor: Hans Grundei
  • Publication number: 20050102038
    Abstract: A subcutaneous, intramuscular bearing (1) for a rigid transcutaneous implant (2) is provided, for anchoring intracorporally in a bone stump and having an intermediate piece (3) between the implant (2) and an extracorporal coupling for coupling on the implant. A rigid bushing (5) is tightly connected to the intermediate piece (3), such that between the wall of the bushing (5) and the intermediate piece (3) an annular space (6) is formed, which is closed in the intracorporal direction, for receiving and setting the extracorporal coupling. The outer wall of the bushing (5) has an open-meshed, three-dimensional lattice structure (8) and a lattice-free distal region having a width B. A spring ring (9) is set in the annular space (6) from the distal end, moved with a telescoping motion, and locked under exertion of its spring effect.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 12, 2005
    Inventor: Hans Grundei
  • Patent number: 6869450
    Abstract: A subcutaneous, intramuscular support (1) is provided for a rigid transcutaneous implant (2), which can be anchored intracorporeally in a bone stump. The support has an intermediate piece (3) between the part of the implant (2) to be intracorporeally anchored and an extracorporeal coupling device (4) that can be coupled to it. A rigid bushing (5) is firmly connected with the intermediate piece (3), such that an annulus (6) is formed between the wall of the bushing (5) and the intermediate piece (3), the annulus being closed in the intracorporeal direction, and into which annulus the extracorporeal coupling device can be inserted. A tube (7) made of a flexible material is applied to the outer wall of the bushing (5), and a metallic wool (8) is applied to the flexible tube (7).
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: March 22, 2005
    Assignee: ESKA Implants GmbH & Co.
    Inventor: Hans Grundei
  • Patent number: 6843808
    Abstract: A subcutaneous, intramuscular bearing for a rigid transcutaneous implant that can be anchored intracorporeally in a bone stump and that has an extracorporeal coupling device for a standard exoprosthetic component that includes a flexible material, and that has a socket that distally surrounds the implant in a firm manner, the bearing including: an enveloping sheath arranged intracorporeally in the form of a flexible pleated bellows, which is proximally connected to the socket via a collar that is formed thereon in a sealing manner, in such a way that a hollow space with a minimum breadth s remains free between the inner walling of the pleated bellows and the outer walling of the socket; a flexible grid network is arranged distally at the pleated bellows; and an additional grid network adjoins the flexible grid network on the distal side, wherein the additional grid network has a higher modulus of elasticity in comparison to that of the flexible grid network.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: January 18, 2005
    Assignee: Eska Implants GmbH & Co.
    Inventor: Hans Grundei
  • Publication number: 20040193286
    Abstract: A leg prosthesis adapted to a thigh stump includes an adapter (2) for a knee joint (3), a knee joint (3) mounted on this adapter, and a prosthetic lower leg (4) coupled to the knee joint (3). A prosthetic foot (5) is attached to this prosthetic lower leg and can pivot into a toes-raised foot position. The knee joint (3) upon transition from the extended position to the bent position performs a combined rolling-sliding movement about a pivot axis (6). A force-transmitting element (8) moves the prosthetic foot (5) substantially from the toes-down foot position to the toes-raised foot position during bending of the knee joint (3). Each bending position of the knee joint is transformed by a converter into an unambiguous electrical signal, which is supplied to a programmable control device, which generates a signal used to control an electrically adjustable actuator, which increases or decreases the resistance of the knee joint against or for further bending according to the signal.
    Type: Application
    Filed: February 13, 2004
    Publication date: September 30, 2004
    Applicant: ESKA Implants GmbH & Co.
    Inventor: Hans Grundei
  • Patent number: 6793680
    Abstract: A knee joint endoprosthesis is provided having a femoral part (1) that can be linked with a shank part to be anchored in the femur, the femoral part being provided with two runners (2, 3) interlinked ventrally via a bridge. A tibia plateau part (5) interacts with a shank part to be anchored in the tibia and is provided with two slide guides (6) in which the runners (2, 3) of the femoral part (1) can roll off and slide. With increasing bend of the knee joint and upon exceeding a predetermined bending angle, the femoral part is allowed to perform an increasing rotation relative to the tibia plateau part (5).
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: September 21, 2004
    Assignee: ESKA Implants GmbH & Co.
    Inventors: Hans Grundei, Wolfram Thomas
  • Publication number: 20040102786
    Abstract: A system is provided for reconstructing the natural torque between the natural knee and the natural hip area, including a saw jig (2) with an exact parallelepipedal configuration, traversed by saw slots (16, 17, 18) for producing perpendicular ventral and dorsal and diagonal cuts. The front face of the saw jig can be placed on the horizontal cut of the femur (13) and detachably fixed thereto. The saw jig has a central opening (19) and is provided with coupling means for detachably coupling to a rotational jig (1). The system also includes an intramedullary pin (11), provided on the femur side, which can be connected in a pivoting manner to the rotational jig (1) and can be inserted in the femoral bone canal. The saw jig (2) can be threaded onto the intramedullary pin (11) and can then be coupled to the rotational jig (1), whereby the intramedullary pin (11) forms a pivoting axis for the saw jig (2), about which axis the latter can be pivoted plus or minus 10° about the horizontal.
    Type: Application
    Filed: September 15, 2003
    Publication date: May 27, 2004
    Applicant: ESKA Implants GmbH & Co.
    Inventor: Hans Grundei