Patents by Inventor Daniel E. Andrew

Daniel E. Andrew 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).

  • Epidural needle having cannula clamp
    Patent number: 5368573
    Abstract: A clamping device is disclosed for securing a cannula in an epidural needle. The clamping device comprises a cylindrical housing seated in an epidural needle, the housing having a pair of diametrically opposed openings in which the arms of a clip are inserted to loosely receive the cannula or engage the cannula as desired.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: November 29, 1994
    Inventor: Daniel E. Andrew
  • Method and system for inserting spinal catheters
    Patent number: 5160323
    Abstract: A method and a system for inserting spinal catheters for administration of spinal anaesthesia are disclosed. An epidural needle (10) having a hub (22) is inserted into the epidural space of a patient and a cannula (18) having a blunt end (52) is inserted into and advanced forwardly within the epidural needle for abutment against the dura-arachnoid membrane (53) to place the membrane in tension. The cannula is locked in place in the epidural needle by a securing means (32) attached to the hub of the epidural needle. A flexible catheter (54) having a wire (58) or stylet therein with an end projecting beyond the distal end of the catheter is inserted through the cannula for piercing a hole in the tensioned dura-arachnoid membrane whereby the catheter can be inserted a predetermined distance through the dura-arachnoid membrane into the subarachnoid space. The cannula and epidural needle are removed and the wire withdrawn to allow continuous administering of an anaesthetic through the catheter.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: November 3, 1992
    Inventor: Daniel E. Andrew
  • Method and system for inserting spinal catheters
    Patent number: 4973312
    Abstract: A method and a system for inserting spinal catheters for administration of spinal anaesthesia are disclosed. An epidural needle having a hub is inserted into the epidural space of a patient and a cannula having a blunt end is inserted into and advanced forwardly within the epidural needle for abutment against the dura-arachnoid membrane to place the membrane in tension. The cannula is locked in place in the epidural needle by a securing means attached to the hub of the epidural needle. A flexible catheter having a wire or stylet therein with an end projecting beyond the distal end of the catheter is inserted through the cannula for piercing a hole in the tensioned dura-arachnoid membrane whereby the catheter can be inserted a predetermined distance through the dura-arachnoid membrane into the subarachnoid space. The cannula and epidural needle are removed and the wire withdrawn to allow continuous administering of an anaesthetic through the catheter.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: November 27, 1990
    Inventor: Daniel E. Andrew