Abstract: A single-use disposable phlebotomy venous tourniquet formed from a strip of elastic fabric material. Such fabric may be initially selected or treated with a polymeric or elastomeric material to provide surfaces having predetermined frictional characteristics to minimize slippage and discomfort to the patient and to facilitate ease of use in knotting and releasing the tourniquet.
Type:
Grant
Filed:
December 7, 1992
Date of Patent:
July 30, 1996
Assignee:
Ingress Technologies, Inc.
Inventors:
C. Lee Payne, Jr., John L. Lundberg, J. Thomas Atkins, Ray L. Hauser
Abstract: An instrument for removing tissue samples from a tissue mass which automatically penetrates, severs, and removes a tissue portion for examination. The instrument is motor powered, preferably by self-contained rechargeable batteries, and employs electrically actuated stops to control the action of penetration into and retraction from the tissue mass. The tissue penetrating means and severing means includes an inner stylet which penetrates the tissue mass and a hollow outer tube or cannula which surrounds the stylet and serves to sever a sample of tissue. In a preferred form the tissue penetrating end of the stylet is notched so that when the stylet penetrates the tissue mass, a portion of the tissue relaxes in the notched area. After tissue penetration by the stylet, the cannula, having a cutting surface at its distal end, penetrates the tissue and cuts off the tissue portion residing in the notched area of the stylet.
Type:
Grant
Filed:
November 27, 1989
Date of Patent:
July 10, 1990
Assignee:
Ingress Technologies, Inc.
Inventors:
Richard A. Terwilliger, Daniell Hebert, Jack Hall