Patents Examined by David J. Isabelle
  • Patent number: 4650487
    Abstract: A surgically implantable, multi-lumen, high profile mammary implant includes a first, flexible, elastic lumen at least partly filled with a soft gel material and having a front wall approximating the shape of a human breast and a second, firmer, flexible lumen within the first lumen and connected thereto solely at the rear wall of the first lumen. The second lumen has a volume which is less than the volume of the first lumen and is at least partly filled with a second soft gel material. A third lumen preferably inflatably surrounds the first lumen and is inflated with saline solution.
    Type: Grant
    Filed: October 6, 1981
    Date of Patent: March 17, 1987
    Assignee: Memorial Hospital for Cancer and Allied Diseases
    Inventor: Toros A. Chaglassian
  • Patent number: 4571749
    Abstract: An implantable hydraulic urinary sphincter system is disclosed for maintaining continence in those patients unable to control or stop inadvertent urinary flow. The invented apparatus generally consists of an artificial urinary sphincter and a control means for obtaining continence while causing the artificial sphincter to apply minimal pressure to the urethra for all conditions of the bladder. The invented apparatus: (1) automatically causes sphincter fluid pressure to increase or decrease with sensed bladder and/or abdominal pressure, and (2) is manually actuated by a patient when he or she desires to urinate. The invented apparatus can be filled with fluid, or the fluid pressure can be reset, after implantation without necessitating a surgical procedure.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: February 25, 1986
    Assignee: The Johns Hopkins University
    Inventor: Robert E. Fischell
  • Patent number: 4546500
    Abstract: A method and apparatus for producing a vessel-equivalent prosthesis is described. A contractile agent such as fibroblast cells, smooth muscle cells or platelets is incorporated into a collagen lattice and contracts the lattice axially around an inner core. After the structure has set, additional layers may be formed in an ordered manner depending on the intended function of the prosthesis. Alternatively, all the layers may be formed concurrently. A plastic mesh sleeve is sandwiched between layers or embedded within the smooth muscle cell layer to reinforce the structure and provide sufficient elasticity to withstand intravascular pressure.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: October 15, 1985
    Assignee: Massachusetts Institute of Technology
    Inventor: Eugene Bell
  • Patent number: 4541429
    Abstract: A miniature implantable magnetically actuated valve relatively insensitive to normally-encountered shock loads includes a housing for containing a movable ferromagnetic valve member. Inlet and outlet passages are provided in the housing at least one of which has an internal valve seat which is engageable by the valve member to close that passage. The valve member is resiliently suspended within the housing by special flat multiply-started spiral springs which permit the valve member only a single degree of freedom toward and away from the valve seat. The valve member is biased in one direction or the other and the valve is actuated transcutaneously by a magnet juxtaposed to the valve outside the body which produces a magnetic force on the valve member which exceeds and opposes the biasing force.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: September 17, 1985
    Inventors: Frank R. Prosl, James G. Skakoon, Gerard S. Carlozzi, Infusaid Corporation
  • Patent number: 4523338
    Abstract: A joint for demountably clamping a tubular member into a main bore in a socket comprises an auxiliary bore directed perpendicular to the axis of the main bore and intersecting it over a small arc and first and second collets that fit in the auxiliary bore. Part cylindrical bearing faces on the collets are shaped to conform to the curvature of the tubular member. A clamping bolt urges the collets together so that they press on the tubular member and retain it in the socket. Preferably a reinforcing insert fits the end of the tubular member and has a disc or annulus that registers with the collets to resist compressive loads on the tube.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: June 18, 1985
    Assignee: J. E. Hanger & Company Limited
    Inventor: Denis R. W. May
  • Patent number: 4428082
    Abstract: A newly developed breast prosthesis overcomes the tightness and contracture of the fibrous capsule which forms around the existing prostheses. This prosthesis is constructed with an outer temporary component and an inner permanent component. The inner component is a fluid- or gel-filled container or sac of a flexible, non-absorbable material. The temporary outer component is a container or cover of a material which is absorbable under the conditions of use, and an inert filler material, preferably an absorbable, biologically acceptable liquid, e.g. saline solution, filling the space between the inner and outer components which is added through a valve or tube in the outer cover either at the time of manufacture or at the time of implantation. The inner component is preferably of silicone rubber film and is filled with a silicone gel. The outer portion is in the form of a sheet, film or coating of a material which can be absorbed in the body after surgical implantation.
    Type: Grant
    Filed: November 5, 1981
    Date of Patent: January 31, 1984
    Inventor: Sadeque S. Naficy
  • Patent number: 4428369
    Abstract: A corrective and protective knee brace wherein the upper and lower portions of the brace are connected together in such a manner that the flexing movement of the brace closely simulates the rolling and sliding movement of the human knee. The simulated knee movement is accomplished in the brace by a novel roller and inclined plane mechanism which coacts with flexible interconnecting cables. The upper portion of the knee brace includes a pair of pressure pads for engagement with opposite sides of the wearer's leg above the knee, and the lower portion of the brace includes a pair of pressure pads for engagement with opposite sides of the wearer's leg below the knee. The brace is provided with a toggle mechanism that is operable after the brace has been positioned on the leg to cause the upper and lower pressure pads to exert inward pressure above and below the knee.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: January 31, 1984
    Assignee: Arthur C. Peckham
    Inventors: Arthur C. Peckham, Rolf A. Faste, Arthur C. Peckham, Jr.
  • Patent number: 4413360
    Abstract: An adjustable prosthetic ankle assembly for allowing the heel height of a prosthetic foot to be adjusted and secured in a position that is of optimum comfort and facility to the user, the ankle assembly has a mechanism interposed between an ankle block and a connected foot block with a pivot and associated adjustment screw for altering the fore and aft tilt of the foot block with respect to the ankle block.
    Type: Grant
    Filed: October 27, 1981
    Date of Patent: November 8, 1983
    Inventors: Steve R. Lamb, Larry W. Lamoreux
  • Patent number: 4393777
    Abstract: A hand-held guide 50 for manually positioning a workpiece 58 between the anvil rib 25 and tool 9 of a hot die stamping press. A groove completed by interchangable cover plates 60, 70, 70' attached at one end of the guide conforms to a cross-sectional dimension common to similar workpieces and, with a force fit, retentively holds each of the workpieces.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: July 19, 1983
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Raymond P. Harris
  • Patent number: 4363144
    Abstract: A prosthetic device for mastectomy patients is provided wherein a brassiere is modified by the incorporation of temporary fasteners in at least one cup which will hold in place a prosthetic pad of unique manufacture. The brassiere itself is preferably releasably retained by fasteners mounted to the frontal top portions of a slip.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: December 14, 1982
    Inventor: Helen G. Goad