Patents by Inventor Robin S. M. Ling

Robin S. M. Ling 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: 6264698
    Abstract: A method of implanting an acetabular cup which includes the step of preparing an acetabular socket to receive a cup, placing cement in the acetabular socket before or after locating a tube in line with the acetabular socket and inserting the acetabular cup through the tube and into the socket.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: July 24, 2001
    Assignee: Howmedica International S. de R.L.
    Inventors: Peter Lawes, Robin S. M. Ling
  • Patent number: 6197032
    Abstract: A profile gauge for use with an acetabular cup loading tube provided with a skirt or flange characterized by adjustable means for measuring and indicating the diametric profile of the mouth of the rim area adjacent thereto of an acetabular socket into which an acetabular cup is to be implanted and includes means for removably locating said adjustable means on a loading tube to indicate on the skirt thereof the measured diameter profile.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: March 6, 2001
    Assignee: Howmedica International Inc.
    Inventors: Peter Lawes, Robin S. M. Ling
  • Patent number: 6019766
    Abstract: A device for use with an acetabular socket prosthesis which has an outer rim of predetermined size. The device comprises an outwardly extending removable location and/or sealing element adapted to surround the outer rim of said cup with which it is to be used during implantation thereof.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: February 1, 2000
    Assignee: Stryker Technologies Corporation
    Inventors: Robin S. M. Ling, Graham A. Gie, Andrew J. Timperley, Donald W. Howie, Namal S. Nawana, John A. Storer
  • Patent number: 5879402
    Abstract: A method of implanting an acetabular cup which includes the step of preparing an acetabular socket to receive a cup, placing cement in the acetabular socket before or after locating a tube in line with the acetabular socket and inserting the acetabular cup through the tube and into the socket.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: March 9, 1999
    Assignee: Howmedica International Inc.
    Inventors: Peter Lawes, Robin S. M. Ling
  • Patent number: 5665121
    Abstract: A prosthesis having attachment portion for insertion into or attachment to a patient's bone without bone cement. Parts of the attachment portion on the prosthesis are attached to the bone are covered with a mantle of synthetic resin material and which has a roughened outer surface with bone fragments or calcium phosphate fragments embedded therein.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: September 9, 1997
    Assignee: Howmedica International
    Inventors: Graham A. Gie, Peter Lawes, Lars Linder, Robin S. M. Ling, Tom J. Slooff
  • Patent number: 5470336
    Abstract: An apparatus for performing hip prosthesis revision surgery includes means for preparation of the cavity left after removal of the original prosthesis. A tamp having a longitudinal passageway extending longitudinally through the stem portion thereof and a guidewire positioned in the cavity function to compact bone graft material in the cavity and form a precisely contoured new hip prosthesis receiving cavity.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: November 28, 1995
    Inventors: Robin S. M. Ling, W. E. Michael Mikhail, James J. Elting, Graham A. Gie, Tom J. J. H. Slooff, Jacques J. Vanderlinden
  • Patent number: 5290318
    Abstract: A tapered, collarless femoral hip joint prosthesis formed of Co-Cr-Mo alloy with highly polished surfaces is provided.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: March 1, 1994
    Inventors: Robin S. M. Ling, W. E. Michael Mikhail, James J. Elting
  • Patent number: 5258033
    Abstract: A total hip replacement femoral component has an outer surface shaped to conform to an acetabular socket and has an internal bore adapted to receive a femoral head. The head has been shaped and dimensioned to provide a spigot to enter the bore and be locked in place by a cement mantle between the bone and the walls of the bore. The head allows the hip component to move further over said spigot and re-lock should the cement creep or thereby any movement in the bone after assembly. The internal bore is inwardly tapered. Thus the taper can be co-axial with the femoral neck, but there may be advantages in orientating the axis of the taper as close to vertical as possible when in position so that it is closer to the average force vector acting on the femoral head during human activity.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: November 2, 1993
    Assignee: Howmedica International Inc.
    Inventors: Peter Lawes, Robin S. M. Ling
  • Patent number: 5192283
    Abstract: A method and apparatus for performing hip prosthesis revision surgery includes preparation of the cavity left after removal of the original prosthesis. A tamp having a longitudinal passageway extending longitudinally through the stem portion thereof and a guidewire positioned in the cavity function to compact bone graft material in the cavity and form a precisely contoured new hip prosthesis receiving cavity.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: March 9, 1993
    Inventors: Robin S. M. Ling, Graham A. Gie, W. E. Michael Mikhail, James J. Elting, Tom J. J. H. Slooff
  • Patent number: 5171275
    Abstract: A tapered, collarless femoral hip joint prosthesis formed of Co-Cr-Mo alloy with highly polished surfaces is provided.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: December 15, 1992
    Inventors: Robin S. M. Ling, W. E. Michael Mikhail, James J. Elting
  • Patent number: 5171286
    Abstract: An acetabular cup for use in a total hip prosthesis includes an implant/cement interface portion for location in a cement mantle. The cup has an enclosure element for allowing the cup to slide lengthwise to re-engage itself in the cement mantle to accommodate creep or movement thereof. Thus, should there be a tendency for the cup to become loose, the construction according to the invention is intended to relock the cup within the cement mantle. Thus, if the bone remodels, then the cement mantle will creep to re-adapt itself to the bone and the implant will re-engage in the cement mantle accommodating to the movement of the cement. If the bone cement is too highly stressed in places, it will creep in order to relieve this stress and the implant will re-settle.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: December 15, 1992
    Assignee: Howmedica International Inc.
    Inventors: Peter Lawes, Robin S. M. Ling
  • Patent number: 4753657
    Abstract: A bone implant assembly having an implant element whereof a stem portion is for insertion into a bone cavity, and wedge means for wedging between a proximal region of the cavity wall and the stem. The stem is tapered so that deeper insertion urges the wedge means against the wall. The wedge means may comprise lateral and medial wedges. Each may comprise a stem engaging portion with a low-friction surface, and an outer, wall engaging portion having a surface adapted for non-slip engagement, being a high friction surface and/or adapted for ingrowth of bone.
    Type: Grant
    Filed: January 15, 1985
    Date of Patent: June 28, 1988
    Assignee: University of Exeter
    Inventors: Alan J. C. Lee, Robin S. M. Ling
  • Patent number: 4488549
    Abstract: A seal member for fitting over and sealing the opening of a cavity in a bone to allow pressurization of cement in the cavity has an aperture for sealingly receiving a cement delivery nozzle. The seal member may be a balloon seal, which may be inflatable and expandable, or a solid body of conformable material. In use, the seal member is urged against the opening, e.g. by force applied by the barrel of a cement delivery gun on an abutment means having an apertured pressure piece shaped to urge the seal member against the mouth of the opening.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: December 18, 1984
    Assignee: University of Exeter
    Inventors: Alan J. C. Lee, Robin S. M. Ling
  • Patent number: 4344190
    Abstract: An implant 22, e.g. for locating a hip prosthesis, is placed in the medullary canal 18 of a bone 20 (e.g. the femur) and secured by pressurized cement 24. A push-fit plug 10 prevents cement penetrating down the canal. The plug can be biodegradable so that in time it dissolves away and does not modify the flexural rigidity of the cement/bone system and the risk of fractures occurring at the level of the plug is reduced. Additionally or alternatively, the outwardly facing end portion 16 of the plug may be generally conical so that the thickness of the cement increases gradually and the flexural rigidity likewise changes gradually.
    Type: Grant
    Filed: July 23, 1980
    Date of Patent: August 17, 1982
    Assignee: University of Exeter
    Inventors: Alan J. C. Lee, Robin S. M. Ling
  • Patent number: 4180254
    Abstract: Surgical apparatus for locating a patient lying on his side to facilitate hip surgery by the so-called Southern approach comprises a first platform part to support the patient's lower hip, two posts upstanding from respectively opposite sides of this part to engage the patient about the rear and front of his pelvis, a second platform part extending from the first part to support the patient's lower leg, at least one further post upstanding from the second part, and a third platform part connected to the further post above the second part to support the patient's upper leg. Preferably the first posts are adjustable in mutually opening and closing manner, such posts are respectively shorter and longer, all posts are adjustable in height, and the third platform part is adjustably tilted.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: December 25, 1979
    Assignee: National Research Development Corporation
    Inventors: Alan J. C. Lee, Robin S. M. Ling