Patents Assigned to Osteotech Inc.
  • Patent number: 5507813
    Abstract: Surgically implantable shaped materials, e.g., sheets, are fabricated from elongate bone particles, advantageously those that have been demineralized. The materials when applied to a bone repair site enhance or accelerate new bone ingrowth by any one of a variety of biological and/or mechanical mechanisms.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: April 16, 1996
    Assignee: Osteotech, Inc.
    Inventors: Michael Dowd, Denis G. Dyke
  • Patent number: 5507810
    Abstract: Fibrous connective tissue for surgical implantation is made substantially antigen-free by contact with one or more extraction agents. Solutions or mixtures of molecules having bipolar regions act as antigen removing permeation enhancers. Cationic, anionic, non-ionic or amphoteric surfactants are suitable bipolar permeation enhancers. One or more extraction agents can be combined to form extraction mixtures.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: April 16, 1996
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Robert K. O'Leary
  • Patent number: 5508036
    Abstract: A device for preventing adhesions or binding of tissue to tissue or of tissue to bone which comprises a composite of a first layer and a second layer, each of which comprises a biodegradable polymer. The first layer is selected from the group consisting of a non-porous layer and a porous layer having a pore size no greater than 3.mu.. The second layer has pores which have a pore size of from about 30.mu. to about 250.mu.. Such a composite device provides for tissue growth into the second layer, while the first layer acts as an adhesion-preventing barrier, and enables attachment of the device to tissue without suturing. Alternatively, the device comprises the first layer hereinabove mentioned and a second layer which is an adherence layer and which adheres to tissue and/or bone.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: April 16, 1996
    Assignee: Osteotech, Inc.
    Inventors: Dirkjan Bakker, Erica A. Bakkum, Clemens A. van Blitterswijk
  • Patent number: 5484601
    Abstract: A flowable demineralized bone powder composition is provided for use in surgical bone repair.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: January 16, 1996
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Patrick A. McBrayer
  • Patent number: 5480436
    Abstract: A device for preventing adhesions or binding of tissue to tissue or of tissue to bone which comprises a composite of a first layer and a second layer, each of which comprises a biodegradable polymer, such as, for example, a polyethylene glycol/polybutylene terephthalate copolymer. The first layer is selected from the group consisting of a non-porous layer and a porous layer having a pore size no greater than 3.mu.. The second layer has pores which have a pore size of from about 30.mu. to about 250.mu.. The device is placed between two tissues or between tissue and bone. Such a composite device provides for tissue growth into the second layer, while the first layer acts as an adhesion-preventing barrier, and enables attachment of the device to tissue without suturing. Alternatively, the device comprises the first layer hereinabove mentioned and a second layer which is an adherence layer and which adheres to tissue and/or bone.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: January 2, 1996
    Assignee: Osteotech, Inc.
    Inventors: Dirkjan Bakker, Erica A. Bakkum, Clemens A. van Blitterswlijk
  • Patent number: 5439684
    Abstract: A shaped piece of swollen demineralized bone which can also be plasticized is provided for use in surgical bone repair.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: August 8, 1995
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Roger C. Stikeleather, Simon Bogdansky, Robert K. O'Leary
  • Patent number: 5405390
    Abstract: An osteogenic composition is obtained from demineralized bone tissue.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: April 11, 1995
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Annamarie B. Prewett
  • Patent number: 5314476
    Abstract: Demineralized bone particles having a median length to median thickness ratio of at least about 10:1 are incorporated in an osteogenic composition useful for repairing bone defects.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: May 24, 1994
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Roger C. Stikeleather
  • Patent number: 5298222
    Abstract: A process for treating musculoskeletal tissue which comprises contacting musculoskeletal tissue with both an effective amount of at least one treating agent selected from the class consisting of antibiotics and disinfectants, and an agent to increase diffusion of the treating agent into the tissue, such as a surfactant or a permeation enhancer. The disinfectant and/or antibiotic function in killing bacteria, vegetative organisms, and viruses (including HIV virus) which may be remaining in the musculoskeletal tissue. A preferred disinfectant is ethanol.
    Type: Grant
    Filed: August 9, 1989
    Date of Patent: March 29, 1994
    Assignee: Osteotech, Inc.
    Inventor: Robert K. O'Leary
  • Patent number: 5298254
    Abstract: A shaped piece of swollen demineralized bone which can also be plasticized is provided for use in surgical bone repair.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: March 29, 1994
    Assignee: Osteotech, Inc.
    Inventors: Annamarie B. Prewett, Roger C. Stikeleather, Simon Bogdansky, Robert K. O'Leary
  • Patent number: 5290558
    Abstract: A flowable demineralized bone powder composition is provided for use in surgical bone repair.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: March 1, 1994
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Patrick A. McBrayer
  • Patent number: 5284655
    Abstract: Swollen demineralized bone particles are formulated into a flowable osteogenic composition which is useful in the repair of osseous defects.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: February 8, 1994
    Assignee: Osteotech, Inc.
    Inventors: Simon Bogdansky, Robert K. O'Leary
  • Patent number: 5236456
    Abstract: An osteogenic composition is obtained from demineralized bone tissue.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: August 17, 1993
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Annamarie B. Prewett
  • Patent number: 5120656
    Abstract: Bone is enzymatically debrided prior to undergoing further processing which renders the bone suitable for osteoprosthetic use.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: June 9, 1992
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Annamarie B. Prewett
  • Patent number: 5118512
    Abstract: A process for cryopreserving a biological material which comprises contacting the biological material with both an effective amount at least one cryopreservation agent, and an agent to increase diffusion of the cryopreservation agent into the biological material, such as a surfactant or a permeation enhancer.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: June 2, 1992
    Assignee: Osteotech, Inc. (a Delaware Corp.)
    Inventors: Robert K. O'Leary, Ann Prewett
  • Patent number: 5073373
    Abstract: A flowable demineralized bone powder composition is provided for use in surgical bone repair.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: December 17, 1991
    Assignee: Osteotech, Inc.
    Inventors: Robert K. O'Leary, Patrick A. McBrayer
  • Patent number: 5061286
    Abstract: At least a portion of the surface of an osteoprosthetic implant is provided with demineralized bone powder adhering thereto. Sorption of the bone particles is accompanied by rapid and deep bone in-growth which firmly anchors the prosthesis to the host bone repair site.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: October 29, 1991
    Assignee: Osteotech, Inc.
    Inventor: John W. Lyle
  • Patent number: 4994030
    Abstract: A kit and process for reconstituting human bone and/or related tissue is disclosed. The kit comprises a pre-formulated sterilized reconstitution medium and double ended transfer needle.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: February 19, 1991
    Assignee: Osteotech, Inc.
    Inventors: Frank P. Glowczewskie, Jr., David A. Present, David W. Anderson, Patrick A. McBrayer
  • Patent number: 4946792
    Abstract: Bone is enzymatically debrided prior to undergoing further processing which renders the bone suitable for osteoprosthetic use.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: August 7, 1990
    Assignee: Osteotech, Inc.
    Inventor: Robert K. O'Leary
  • Patent number: 4863473
    Abstract: A prosthesis for replacing bone extracted from a cadaver. A preferred prosthesis is formed of two tubes of differing diameter, the larger-diameter tube beng slidable over the smaller-diameter tube to provide a telescoping assembly. A stop is provided on the smaller tube, and is adjustably positioned thereon for operatively contacting an end of the larger tube to resist contraction of the assembly after insertion within a cadaver. Threaded pins are provided at the ends of the assembly for engagement within bone of a skeleton of the cadaver. The prosthesis retains the physical appearance of a cadaver after extraction of bone for use in surgical and other therapeutic purposes on living organisms.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: September 5, 1989
    Assignee: Osteotech, Inc.
    Inventors: Frank P. Glowczewskie, Jr., Alfred A. Litwak, Jamie M. Grooms, John W. Lyle