Patents by Inventor Charles A. Homsy

Charles A. Homsy 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: 6679913
    Abstract: The biocompatible material has a resilient, porous structure and is suitable for in vivo implantation. It possesses pores of a narrow pore size distribution between 150 to 300 &mgr;m and is usable for forming a sheeting with a thickness of less than 0.8 mm for tissue reinforcement or which is usable for forming shapes for soft tissue augmentation and with an improved tensile strength. The material provides an environment in which normal tissue growth is fostered. The material has a porous structure comprising fibers or particles having a critical surface tension of 35 mN/m or higher. The material has a porous structure of alumina fibers or particles and PTFE resin fibers and particles bonded together by sintered polytetrafluoroethylene in a manner to expose a maximum amount of fiber surface. The method of preparing the material includes the steps of mixing, filtering, compressing, rolling, sintering, drying, sintering and leaching or solving of leachable or solvable material.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: January 20, 2004
    Assignee: Tranquil Prospects Ltd.
    Inventor: Charles Homsy
  • Publication number: 20020082707
    Abstract: The biocompatible material has a resilient, porous structure and is suitable for in vivo implantation. It possesses pores of a narrow pore size distribution between 150 to 300 &mgr;m and is usable for forming a sheeting with a thickness of less than 0.8 mm for tissue reinforcement or which is usable for forming shapes for soft tissue augmentation and with an improved tensile strength. The material provides an environment in which normal tissue growth is fostered. The material has a porous structure comprising fibers or particles having a critical surface tension of 35 mN/m or higher. The material has a porous structure of alumina fibers or particles and PTFE resin fibers and particles bonded together by sintered polytetrafluoroethylene in a manner to expose a maximum amount of fiber surface. The method of preparing the material includes the steps of mixing, filtering, compressing, rolling, sintering, drying, sintering and leaching or solving of leachable or solvable material.
    Type: Application
    Filed: April 13, 1999
    Publication date: June 27, 2002
    Inventor: CHARLES HOMSY
  • Patent number: 5222985
    Abstract: An intramedullary prosthesis particularly for a hip prosthesis. The prosthesis utilizes a tapered elongate stem undersized precisely with respect to a precisely formed stem socket in the medullary canal with the stem socket defined by cortical bone or dense cancellous bone of a long bone. A layer of coating material surrounds the undersized stem along its entire length and is of a generally uniform thickness along the entire length of the stem with the costing material filling the void area between the stem of the prosthesis and the precisely formed stem socket.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: June 29, 1993
    Inventor: Charles A. Homsy
  • Patent number: 5176712
    Abstract: The endoprosthesis is adapted for insertion into a socket formed within the medullary canal of a patient's bone. It comprises an elongated stem defining a proximal region, a distal region, and a tip. A soft porous pad extends distally from the stem tip. The pad has a thickness greater than two millimeters. The distal region is preferably biocompatible, porous, soft, resilient, deformable, and tissue-ingrowth promoting.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: January 5, 1993
    Assignee: Tranquil Prospects Ltd.
    Inventor: Charles A. Homsy
  • Patent number: 5002488
    Abstract: The dental prosthesis is adapted for insertion into a socket formed within the patient's jaw. It comprises an elongated shaft defining a proximal region, a distal region, and a tip. A soft porous pad extends distally from the shaft tip. The distal region is preferably biocompatible, porous, soft, resilient, deformable, tissue-ingrowth promoting, and has a compressive stress per unit of strain which is substantially smaller than that of adjacent bone.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: March 26, 1991
    Assignee: Hadaco, Ltd.
    Inventor: Charles A. Homsy
  • Patent number: 4976735
    Abstract: The present invention relates to a fixed volume prosthetic urinary bladder for use in a human being. The invention, more particularly, concerns a prosthetic urinary bladder comprising a vent channel having a removable cap and a urethral discharge valve. The present invention is intended for implantation in a human being such that the vent channel protrudes through the abdominal wall and the vent cap lies flush with the outer surface of the abdomen.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: December 11, 1990
    Inventors: Donald P. Griffith, Charles A. Homsy
  • Patent number: 4955367
    Abstract: The mandible oscillator system comprises an intraoral-extraoral appliance mounted on the upper and lower arches of the user. Extraoral oscillating means are coupled to the extraoral portion of the appliance for forcibly oscillating the lower jaw within a predetermined angular range between a starting position and an end position. During one-half cycle of oscillation, the lower jaw is forced to move away from the upper jaw, and during the other half-cycle, the lower jaw is forced to move toward the upper jaw.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: September 11, 1990
    Assignee: Dynamax, Ltd.
    Inventor: Charles A. Homsy
  • Patent number: 4936852
    Abstract: The prosthetic mini-condyle is for use with a prosthetic glenoid fossa. The mini-condyle covers an excised natural condyle having a superior cut surface and a lateral cut surface. The mini-condyle has a superior, convexo-planar articular face and an inferior flat face. A shank extends inferiorly from the inferior face and is adapted to become secured to the lateral cut surface. The flat interior face is adapted to abut against the superior cut surface. Preferably, a porous bicompatible coating is bonded to the inferior face of the condyle and to the medial face of the shank.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: June 26, 1990
    Assignee: Vitek, Inc.
    Inventors: John N, Kent, Charles A. Homsy
  • Patent number: 4919665
    Abstract: An intramedullary prosthesis, particularly but not exclusively a hip prosthesis, is provided comprising an articulating member at one end and a stem at the other. The stem is shaped to conform substantially to the transverse sections of the medullary canal into which it is to be inserted, and is preferably covered with a porous resilient coating which is oversized with respect to the stem socket prepared in the medullary canal. The coating becomes compressed as the stem is inserted into the canal. The porous resilient layer also promotes the ingrowth of tissue thereby ensuring the long term fixation of the prosthesis.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: April 24, 1990
    Inventor: Charles A. Homsy
  • Patent number: 4851004
    Abstract: An intramedullary prosthesis device and the method of orthopedic implantation of the prosthesis device, particularly for a hip prosthesis. The prosthesis device and the method of implantation are directed to a precise undersized stem socket defined by compact bone formed by cortical or dense cancellous bone, and an oversized stem of the prosthesis device coated with a soft, resilient and compressible coating so that upon insertion of the coated stem within the undersized socket the coating is compressed along the length of the stem by the surrounding compact bone of the socket.
    Type: Grant
    Filed: December 31, 1985
    Date of Patent: July 25, 1989
    Inventor: Charles A. Homsy
  • Patent number: 4778472
    Abstract: The surgical TM joint implant has two-parts: a first part which covers or replaces the natural glenoid fossa and articular eminence of a natural TM joint, and a second part which replaces the natural condylar head of the joint. The first part includes a plate having a fossa cavity defined by a relatively deep concave portion and an anteriorly located concavo-planar portion. The second part has a condylar head defining a convexo-planar, articular face for engaging the concavo-planar surface and establishing therewith a planar contact area which minimizes the unit stress transmitted between the first and second parts, thereby providing for an even load distribution between their engaged planar surfaces.
    Type: Grant
    Filed: December 9, 1986
    Date of Patent: October 18, 1988
    Assignee: Vitek, Inc.
    Inventors: Charles A. Homsy, John W. Tellkamp, John N. Kent
  • Patent number: 4778474
    Abstract: An improved acetabular prosthesis (14) is disclosed for use with a femoral head prosthesis (12). The acetabular prosthesis (14) comprises a cup (28) having, in use, sufficient strength to maintain its shape. The exterior surface of the cup (28) is substantially hemispherical. A coating (32) of sufficient thickness is provided on the exterior surface of the cup (28). The coating (32) is sufficiently deformable and has limited elastic memory to mold itself to the particular anatomic geometry or inner contour of the acetabulum. The coating (32) has grooves (36) on its external surfaces.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: October 18, 1988
    Inventor: Charles A. Homsy
  • Patent number: 4636214
    Abstract: An intramedullary prosthesis device and the method of orthopedic implantation of the prosthesis device, particularly for a hip prosthesis. The prosthesis device and the method of implantation utilize an elongate stem undersized precisely with respect to a precisely formed stem socket defined by cortical bone or dense cancellous bone of a long bone. Bone cement is used to fill the void area between the stem of the prosthesis device and the precisely formed stem socket.
    Type: Grant
    Filed: October 17, 1985
    Date of Patent: January 13, 1987
    Inventor: Charles A. Homsy
  • Patent number: 4576608
    Abstract: A composition of matter, and the method of making same, suitable for in vivo implantation to provide an environment in which normal tissue growth is fostered, which composition is a porous, fibrous structure of polytetrafluoroethylene fibers and resin, wherein the combination is sintered at a temperature which fuses the fibers together without substantial detriment to their tensile strength. The composition is prepared containing a material which is soluble in a suitable solvent, which subsequent to sintering of the composition, may be removed to produce the desired amount of void space in the composition.
    Type: Grant
    Filed: November 8, 1983
    Date of Patent: March 18, 1986
    Inventor: Charles A. Homsy
  • Patent number: D277981
    Type: Grant
    Filed: October 22, 1982
    Date of Patent: March 12, 1985
    Assignee: Vitek, Inc.
    Inventors: Charles A. Homsy, John W. Tellkamp, John N. Kent
  • Patent number: D280020
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: August 6, 1985
    Inventor: Charles A. Homsy
  • Patent number: D288236
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: February 10, 1987
    Assignee: Vitek, Inc.
    Inventors: Charles A. Homsy, John W. Tellkamp, John N. Kent
  • Patent number: D288237
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: February 10, 1987
    Assignee: Vitek, Inc.
    Inventors: Charles A. Homsy, John W. Tellkamp, John N. Kent
  • Patent number: D288238
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: February 10, 1987
    Assignee: Vitek, Inc.
    Inventors: Charles A. Homsy, John W. Tellkamp, John N. Kent
  • Patent number: D295076
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: April 5, 1988
    Assignee: Vitek, Inc.
    Inventors: Charles A. Homsy, John W. Tellkamp, John N. Kent