Patents by Inventor Per G. Lindgren

Per G. Lindgren 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).

  • Tissue sampling device
    Patent number: 4699154
    Abstract: A device for tissue sampling by thick needle punctuation including a needle assembly including a hollow first needle and second needle extending through the hollow first needle. The needle assembly is contained in a housing having an opening through which the needles extend. Compressed springs in the housing are caused to expand to urge the needles away from the housing during the sampling of tissue. A rod is provided extending from the housing to simultaneously place the springs in a compressed condition.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: October 13, 1987
    Assignee: Radiplast AB
    Inventor: Per G. Lindgren
  • Tissue sampling device
    Patent number: RE33582
    Abstract: A device for tissue sampling by thick needle punctuation including a needle assembly including a hollow first needle and second needle extending through the hollow first needle. The needle assembly is contained in a housing having an opening through which the needles extend. Compressed springs in the housing are caused to expand to urge the needles away from the housing during the sampling of tissue. A rod is provided extending from the housing to simultaneously place the springs in a compressed condition.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: May 7, 1991
    Assignee: C.R. Bard, Inc.
    Inventor: Per G. Lindgren
  • Tissue sampling device
    Patent number: RE33673
    Abstract: A device for tissue sampling by thick needle punctuation including a needle assembly including a hollow first needle and second needle extending through the hollow first needle. The needle assembly is contained in a housing having an opening through which the needles extend. Compressed springs in the housing are caused to expand to urge the needles away from the housing during the sampling of tissue. A rod is provided extending from the housing to simultaneously place the springs in a compressed condition.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: August 27, 1991
    Assignee: C. R. Bard, Inc.
    Inventor: Per G. Lindgren
  • Tissue sampling device
    Patent number: RE34056
    Abstract: A device for tissue sampling by thick needle punctuation including a needle assembly including a hollow first needle and second needle extending through the hollow first needle. The needle assembly is contained in a housing having an opening through which the needles extend. Compressed springs in the housing are caused to expand to urge the needles away from the housing during the sampling of tissue. A rod is provided extending from the housing to simultaneously place the springs in a compressed condition.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: September 8, 1992
    Assignee: C.R. Bard, Inc.
    Inventors: Per G. Lindgren, Dan Akerfeld