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: 5356412
    Abstract: A strap assembly to be looped about split portions of human tissue to retain the split portions in adjacent contacting relation to promote healing thereof includes a flexible elongated member and a buckle member. The buckle member includes a frame member and a clamp member rotatably mounted within the frame member from a non-strap securing position to a strap securing position. The clamp member rotates to the strap securing position in response to tensional forces exerted on the strap during tensioning thereof about the tissue portions.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: October 18, 1994
    Assignee: United States Surgical Corporation
    Inventors: Ellen M. Golds, Ross R. Muth
  • Patent number: 5322925
    Abstract: Block copolymers have a first copolymer block wherein lactide is the predominant component and a second copolymer block wherein trimethylene carbonate is the predominant component. The copolymers are useful in forming surgical devices, including monofilament sutures.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: June 21, 1994
    Assignee: United States Surgical Corporation
    Inventors: Ross R. Muth, Nagabhushanam Totakura, Cheng-Kung Liu
  • Patent number: 5320624
    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: April 12, 1993
    Date of Patent: June 14, 1994
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew Hermes, Ross R. Muth, John Kennedy
  • Patent number: 5314989
    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 3, 1993
    Date of Patent: May 24, 1994
    Assignee: United States Surgical Corporation
    Inventors: John Kennedy, Donald S. Kaplan, Ross R. Muth
  • Patent number: 5306289
    Abstract: A braided suture exhibits one or more improved properties, e.g., reduced chatter, greater flexibility and/or better hand, than that of a braided suture of known, or standard, construction and of substantially equivalent size.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: April 26, 1994
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth
  • Patent number: 5258013
    Abstract: A siliconized surgical needle is provided which requires significantly less force to effect tissue penetration than a standard siliconized needle.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: November 2, 1993
    Assignee: United States Surgical Corporation
    Inventors: Richard N. Granger, Ross R. Muth, George R. Proto
  • Patent number: 5256762
    Abstract: Compositions comprising polyesters having predetermined monomeric sequence are produced by stepwise addition of monomeric hydroxyacids to a growing polymeric chain. Included herein are various polyesters having predetermined monomeric sequence, methods of their production use as well as articles formed from said compositions.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: October 26, 1993
    Assignee: United States Surgical Corporation
    Inventors: Matthew E. Hermes, Ross R. Muth
  • Patent number: 5236444
    Abstract: Block copolymers have a first polymer block wherein glycolide is the predominant component and a second block having glycolide, lactide and trimethylene carbonate linkages. The copolymers are useful in forming surgical devices, including monofilament sutures.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: August 17, 1993
    Assignee: United States Surgical Corporation
    Inventors: Ross R. Muth, Nagabhushanam Totakura, Cheng-Kung Liu
  • Patent number: 5226912
    Abstract: A surgical needle is attached to a braided suture of particular construction to provide a combined surgical needle-braided suture device. A shrinkable tubing is employed to secure the needle to the suture. The tubing shrinks in response to the application of energy, e.g., heat. Attachment parameters may be controlled to provide standard needle attachment or removable needle attachment.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: July 13, 1993
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth, Herbert W. Korthoff
  • Patent number: 5225520
    Abstract: A block copolymer for use in the fabrication of bioabsorbable articles such as monofilament surgical sutures is prepared by copolymerizing lactide and 1,4-dioxanone, and then polymerizing glycolide with the lactide/1,4-dioxanone copolymer.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: July 6, 1993
    Assignee: United States Surgical Corporation
    Inventors: John Kennedy, Donald S. Kaplan, Ross R. Muth
  • Patent number: 5222978
    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: August 16, 1990
    Date of Patent: June 29, 1993
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth, David L. Brown, Henry A. Holzwarth
  • Patent number: 5217495
    Abstract: A semi-bioabsorbable connective tissue prosthesis, e.g., a replacement for the human anterior cruciate ligament, is provided whose stress-strain characteristics closely match those of the natural tissue.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: June 8, 1993
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, John Kennedy, Ross R. Muth
  • Patent number: 5160677
    Abstract: A method for supporting a piece which is to undergo a treatment process including embedding the piece in a particulate support medium, enclosing the support medium in a container, and pressurizing the support medium by applying pressure to the outside of the container or by applying a vacuum to the interior of the container. Various treatment processes may be employed, such as annealing.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: November 3, 1992
    Assignee: United States Surgical Corporation
    Inventors: Roy D. Gravener, Ross R. Muth
  • Patent number: 5160678
    Abstract: A method for supporting a piece which is to undergo a treatment process including embedding the piece in a particulate support medium, enclosing the support medium in a container, and pressurizing the support medium by applying pressure to the outside of the container or by applying a vacuum to the interior of the container. Various treatment processes may be employed, such as annealing.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: November 3, 1992
    Assignee: United States Surgical Corporation
    Inventors: Roy D. Gravener, Ross R. Muth
  • Patent number: 5147400
    Abstract: A semi-bioabsorbable connective tissue prosthesis, e.g., a replacement for the human anterior cruciate ligament, is provided whose stress-strain characteristics closely match those of the natural tissue.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: September 15, 1992
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, John Kennedy, Ross R. Muth
  • Patent number: 5143662
    Abstract: A process is provided for preparing bioabsorbable polymer particles employing rotary atomization.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: September 1, 1992
    Assignee: United States Surgical Corporation
    Inventors: Michael P. Chesterfield, Ross R. Muth, John Kennedy
  • Patent number: 5123912
    Abstract: An absorbable coating composition useful for coating sutures, said absorbable coating composition comprising a copolymer derived from (i) the copolymerization of a polyalkylene glycol, glycolide monomer and lactide monomer or (ii) the copolymerization of a polyalkylene glycol and a copolymer of lactide and glycolide and multifilament sutures coated with same.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: June 23, 1992
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Ross R. Muth
  • Patent number: 5124103
    Abstract: An absorbable, annealed surgical device made from a multi-phase, polymeric composition derived from lactide and glycolide. Preferably, the composition has two phases, both phases are continuous, the first phase has about 0-about 25%m glycolide moieties, the overall composition has up to 45%m glycolide moieties, and the first phase constitutes at least 50% (and preferably not more than about 95%) by weight of the composition. The device has a high distortion temperature, good resistance to hot-wet creep, but yet loses tensile strength in vivo quickly. The composition per se is injection-moldable, can be annealed, and is not brittle.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: June 23, 1992
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth, John J. Kennedy
  • Patent number: 5051272
    Abstract: The storage stability of a polymeric article susceptible to hydrolytic degradation, e.g., an absorbable suture, is improved by applying a storage stabilizing amount of a mixture comprising at least one water soluble hygroscopic polyhydroxy compound and/or ester thereof, e.g., glycerol, monoacetin, diacetin, and the like, and at least one compound having the general formula ##STR1## and hydreates thereof to the article as storage stabilizing agent, said agent being retained by the article prior to sealing of the enclosure in which the suture is packaged.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: September 24, 1991
    Assignee: United States Surgical Corporation
    Inventors: Matthew E. Hermes, Ross R. Muth
  • Patent number: 4990158
    Abstract: A composite yarn possessing a nonabsorbable, elastic core yarn component and an absorbable, relatively inelastic sheath yarn component is employed in the manufacture of a porous tubular prosthesis useful, e.g., in vascular reconstruction.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: February 5, 1991
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, John Kennedy, Ross R. Muth