Patents by Inventor Ross R. Muth

Ross R. Muth 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: 6260699
    Abstract: Synthetic absorbable sutures are filled with a stabilizing agent, preferably a mixture of glycerol and calcium lactate, and inserted into a retainer having a narrow convoluted passageway. The retainer is inserted into an open foil pouch with a package stabilizing element such as a paper sheet filled with stabilizing agent. The package containing the suture, retainer and package stabilizing element is sterilized, aerated, equilibrated to a relatively high moisture level, and sealed. Long lengths of suture and doubled-over and tripled-over suture may be withdrawn from the retainer with low force without damaging the suture. Bends and kinks in the suture are prevented so as to provide a synthetic absorbable suture having highly desirable out of package hand and feel. The suture an removed from the package exhibits improved tissue drag characteristics.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 17, 2001
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth, David L. Brown, Henry A. Holzwarth
  • Patent number: 6228954
    Abstract: Polymer blends of glycolide and/or lactide homopolymer and/or glycolide/lactide copolymer and polycaprolactone and/or polytrimethylene carbonate homopolymer or copolymers thereof and absorbable surgical devices manufactured therefrom having improved mechanical properties, such as improved impact resistance and improved cyclic flex, are disclosed.
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: May 8, 2001
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew Hermes, Ross R. Muth, John Kennedy
  • Patent number: 5876421
    Abstract: A method for removing residual xylene from sutures includes contacting the suture with water either subjecting the suture to an atmosphere containing water vapor or be immersing the suture in liquid water, followed by drying the suture.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: March 2, 1999
    Inventors: Robert D. Torgerson, Ross R. Muth
  • Patent number: 5795584
    Abstract: Surgical adhesion barriers and methods of using such surgical adhesion barriers are provided. Surgical adhesion barriers according to the present invention have at least one layer of a bioabsorbable material comprising copolymers and/or block copolymers derived from trimethylene carbonate. Alternatively, a multilayer surgical structure having one or more bioabsorbable layers superimposed on a non-absorbable layer is useful for minimizing or preventing formation of fibrous adhesions between a healing trauma site and adjacent surrounding tissue. Alternatively, a bioabsorbable non-woven fabric in adherent contact with at least one bioabsorbable layer of foam, film, mesh, web or woven fabric is also provided. One or more medicinal agents may be interposed between or disposed within any of the aforementioned layers.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: August 18, 1998
    Assignee: United States Surgical Corporation
    Inventors: Nagabhushanam Totakura, Ross R. Muth, Roy D. Gravener, Matthew Hain, Ilya S. Koyfman
  • Patent number: 5674286
    Abstract: A completely bioabsorbable reinforced composite material for use in medical implants and a method for making same. The composite material comprises a hybrid yarn of intimately co-mingled reinforcement fibers of a crystalline polymer and matrix fibers of a polymer having a glass transition temperature below the melting point of the crystalline polymer. The hybrid yarn is heated under pressure to a processing temperature between the glass transition temperature of the matrix fibers and the melting point of the crystalline polymer to form a continuous matrix with reinforcing fibers of crystalline polymer. The composite material may be formed by a two step consolidation process.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: October 7, 1997
    Assignee: United States Surgical Corporation
    Inventors: Keith D'Alessio, Donald S. Kaplan, Ross R. Muth, John Kennedy
  • Patent number: 5518502
    Abstract: Methods for preventing and/or eliminating fogging of endoscope lenses during an endoscopic procedure which include the steps of introducing an endoscope into a body cavity and contacting the endoscope lens with a biocompatible and biodegradable composition containing a polyalkylene oxide while the lens is positioned within the body. Alternatively, the endoscope may be coated with a biocompatible polyHEMA coating which is activated by a biocompatible solution, such as water or saline, which may be introduced during use through a fluid conduit on the endoscope. Devices for preventing and/or eliminating fogging of endoscope lenses during endoscopic procedures and conveying antifogging solutions to the distal end of the endoscope are also provided, and may include a distensible applicator.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: May 21, 1996
    Assignee: The United States Surgical Corporation
    Inventors: Donald S. Kaplan, Ross R. Muth, Nagabhushanam Totakura, Darren E. Zinner, Corbett W. Stone
  • Patent number: 5502159
    Abstract: A block copolymer for use in the fabrication of bioabsorbable articles such as monofilament surgical sutures is prepared by copolymerizing one or more hard phase forming monomers and 1,4-dioxan-2-one, and then polymerizing one or more hard phase forming monomers with the dioxanone-containing copolymer.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: March 26, 1996
    Assignee: United States Surgical Corporation
    Inventors: Cheng-Kung Liu, Steven L. Bennett, John Kennedy, Donald S. Kaplan, Ross R. Muth
  • Patent number: 5478355
    Abstract: A method is provided for improving the in vivo strength retention of a bioabsorbable implantable medical device such as a suture.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: December 26, 1995
    Assignee: United States Surgical Corporation
    Inventors: Ross R. Muth, Nagabhushanam Totakura, Cheng-Kung Liu
  • Patent number: 5475063
    Abstract: Polymer blends of glycolide and/or lactide homopolymer and/or glycolide/lactide copolymer and polycaprolactone and/or polytrimethylene carbonate homopolymer or copolymers thereof and absorbable surgical devices manufactured therefrom having improved mechanical properties, such as improved impact resistance and improved cyclic flex, are disclosed. The blends may be prepared by polymerizing a glycolide or lactide containing polymer in the presence of a polymer derived from trimethylene carbonate or .epsilon.-caprolactone.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: December 12, 1995
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew Hermes, Ross R. Muth, John Kennedy
  • Patent number: 5474732
    Abstract: A method for forming a surgical clip and fixture for use therein includes molding a polymeric clip body, the clip body having hinged legs, the polymer of the clip body being substantially amorphous. The clip body can then be moved to a desired configuration while being subjected to a temperature above the glass transition temperature. The molded clip body is then heated to a temperature within the crystallization range for a period of time sufficient to impart at least 20% crystallinity thereto to impart a spring back property. Also disclosed herein is a fixture for forming a surgical clip in accordance with this method.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: December 12, 1995
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, Daniel Shichman, Ross R. Muth, Charles E. Gorman, Jr.
  • Patent number: 5472702
    Abstract: A human growth factor (HGF), a human growth factor-containing composition or a medical or surgical device such as a wound dressing or suture filled with a human growth factor-containing composition is sterilized employing an ethylene oxide gaseous sterilizant.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: December 5, 1995
    Assignee: United States Surgical Corporation
    Inventors: Ross R. Muth, Matthew E. Hermes, Donald S. Kaplan
  • Patent number: 5468252
    Abstract: Synthetic absorbable sutures are filled with a stabilizing agent, preferably a mixture of glycerol and calcium lactate, and inserted into a retainer having a narrow convoluted passageway. The retainer is inserted into an open foil pouch with a package stabilizing element, such as a paper sheet filled with stabilizing agent. The package containing the suture, retainer and package stabilizing element is sterilized, aerated, equilibrated to a relatively high moisture level, and sealed. Long lengths of suture and doubled-over and tripled-over suture may be withdrawn from the retainer with low force without damaging the suture. Bends and kinks in the suture are prevented so as to provide a synthetic absorbable suture having highly desirable out of package hand and feel. The suture as removed from the package exhibits improved tissue drag characteristics.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: November 21, 1995
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth, David L. Brown, Henry A. Holzwarth
  • Patent number: 5462162
    Abstract: Synthetic absorbable sutures are filled with a stabilizing agent, preferably a mixture of glycerol and calcium lactate, and inserted into a retainer having a narrow convoluted passageway. The retainer is inserted into an open foil pouch with a package stabilizing element, such as a paper sheet filled with stabilizing agent. The package containing the suture, retainer and package stabilizing element is sterilized, aerated, equilibrated to a relatively high moisture level, and sealed. Long lengths of suture and doubled-over and tripled-over suture may be withdrawn from the retainer with low force without damaging the suture. Bends and kinks in the suture are prevented so as to provide a synthetic absorbable suture having highly desirable out of package hand and feel. The suture as removed from the package exhibits improved tissue drag characteristics.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: October 31, 1995
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth, David L. Brown, Henry A. Holzwarth
  • Patent number: 5458616
    Abstract: A siliconized surgical needle is provided which requires significantly less force to effect tissue penetration than a standard siliconized needle.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: October 17, 1995
    Assignee: United States Surgical Corporation
    Inventors: Richard N. Granger, Ross R. Muth, George R. Proto
  • Patent number: 5447966
    Abstract: An absorbable composition useful for treating absorbable surgical devices to render the same storage stable and/or to enhance delivery of the article and/or a medico-surgically useful substance to a wound. The preferred composition includes collagen or a derivative thereof, a plasticizer and a surfactant.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: September 5, 1995
    Assignee: United States Surgical Corporation
    Inventors: Matthew E. Hermes, Ross R. Muth, Darel L. Gustafson
  • Patent number: 5425949
    Abstract: A bioabsorbable copolymer is obtained from the polymerization of a major amount of .epsilon.-caprolactone and a minor amount of at least one other copolymerizable monomer in the presence of an initiator possessing at least two carboxylic acid groups. The copolymer is useful, inter alia, as a coating for a surgical suture.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: June 20, 1995
    Assignee: United States Surgical Corporation
    Inventors: Steven L. Bennett, Mark S. Roby, Ross R. Muth
  • Patent number: 5376118
    Abstract: A support material for cell impregnation is provided. The support material is fabricated from a semiabsorbable composite yarn comprising a nonabsorbable, elastic core yarn and an absorbable, relatively inelastic sheath yarn. A prosthetic device may be formed from the support material. The support material is impregnated with living cells followed by incorporation into the tissue structure of a host organism. The support material impregnated with cells may be cultured in vitro to increase the number of cells prior to incorporation into the host organism.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: December 27, 1994
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, John Kennedy, Ross R. Muth, Elliot A. Gruskin
  • Patent number: 5366458
    Abstract: A latchless surgical clip provides effective hemostasis while avoiding or minimizing the risk of injury to the tissue site to which the clip is applied. The clip includes a hinge region having an elastic spring back property so that the legs are spread apart to engage opposing sides of the tissue and then released to return to their tissue clamping (closed) position. A method for forming the latchless surgical clip and a fixture for use therein are also described.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: November 22, 1994
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, Daniel Shichman, Ross R. Muth, Charles E. Gorman, Jr.
  • Patent number: 5366081
    Abstract: Synthetic absorbable sutures are filled with a stabilizing agent, preferably a mixture of glycerol and calcium lactate, and inserted into a retainer having a narrow convoluted passageway. The retainer is inserted into an open foil pouch with a package stabilizing element, such as a paper sheet filled with stabilizing agent. The package containing the suture, retainer and package stabilizing element is sterilized, aerated, equilibrated to a relatively high moisture level, and sealed. Long lengths of suture and doubled-over and tripled-over suture may be withdrawn from the retainer with low force without damaging the suture. Bends and kinks in the suture are prevented so as to provide a synthetic absorbable suture having highly desirable out of package hand and feel. The suture as removed from the package exhibits improved tissue drag characteristics.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: November 22, 1994
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth, David L. Brown, Henry A. Holzwarth
  • Patent number: 5358677
    Abstract: Method for forming polyvinyl alcohol (PVA) into surgical elements include forming a mixture of PVA and water into a film by vacuum pressing with a first force, heating, applying a second force two to two hundred times the firs force, drying the film to remove water to a content of less than about 10% by weight based on the weight of the film, and molding the film into a desired shape.
    Type: Grant
    Filed: March 17, 1992
    Date of Patent: October 25, 1994
    Assignee: United States Surgical Corporation
    Inventors: Ross R. Muth, Nagabhushanam Totakura, Keith D'Alessio