Patents by Inventor Hakan A. E. Rohman

Hakan A. E. Rohman 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).

  • Method for performing an anastomosis
    Patent number: 4917090
    Abstract: In surgery, especially in microsurgery, the joining of blood vessels or tubular organs, anastomosis, consumes a considerable part of the surgical time. This invention provides fasteners that are shaped in such a manner that they are retained in a novel clamping device until the joining is accomplished. The fasteners comprise at least two couplable rings having axially directed pins and intermediate holes distributed about their centers, and a shoulder portion formed along the periphery of at least one of the rings for fitting at least one of the rings into the clamping device.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: April 17, 1990
    Assignee: Unilink, Inc.
    Inventors: Anders Berggren, Hakan A. E. Rohman, Leif T. Ostrup
  • Annular fastening means
    Patent number: 4917091
    Abstract: In surgery, especially in microsurgery, anastomosis, consumes a considerable part of the time. In order to carry out anastomosis rapidly and reliably a surgical instrument (1) according to the invention is provided with two clamping means (2,3), each being arranged to support a fastening means (5a,5b) consisting of a ring with axially directed pins (6). The clamping means (2,3) are rotatably connected to the instrument and can be actuated by a mechanism (i.a. 7) to be turned towards each other to join the fastening means (5a,5b) and vessels or organs (50,51) threaded onto these.The invention relates to fastening means (5a,5b) shaped in such a manner that they are retained in the clamping means (2,3) of the instrument until the joining is accomplished.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: April 17, 1990
    Assignee: Unilink AB
    Inventors: Anders Berggren, Hakan A. E. Rohman, Leif T. Ostrup
  • Surgical instrument for performing anastomosis
    Patent number: 4624257
    Abstract: PCT Filed Jun. 17, 1983 PCT Pub. No. WO84/00102 PCT Pub. Date Jan. 19, 1984 .In surgery, especially in microsurgery, the joining of blood vessel ends or other tubular organs, anastomosis, consumes a considerable part of the time. In order to carry out anastomosis rapidly and reliably a surgical instrument (1) is provided with two clamping means (2, 3), each being arranged to support a fastening means (5a, 5b) consisting of a ring with axially directed pins (6). The clamping means (2, 3) are rotatably connected to the instrument and can be actuated by mechanism (i.a. 7) to be turned towards each other to join the fastening means (5a, 5b) and vessels or organs (50, 51) threaded onto these. The invention also relates to fastening means 5a, 5b) shaped in such a manner that they are retained in the clamping means (2, 3) of the instrument until the joining is accomplished.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: November 25, 1986
    Inventors: Anders Berggren, Hakan A. E. Rohman, Leif T. Ostrup