Catheter with lumen occluding means

Details Catheter with lumen occluding means Catheter with lumen occluding means

1998-07-31

2000-06-13

McDermott, Corrine

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604247, 604 96, 604264, 604523, A61M 500

Patent

active

060743743

ABSTRACT:
A catheter for use with the vascular system includes an elongated catheter body which has a side wall defining an interior catheter lumen. A plurality of openings are provided in the side wall at a first distal zone of the catheter body. The openings are adapted for relatively low pressure movement of fluid therethrough. A plurality of normally closed pressure responsive exits are located in a side wall at a second distal zone of the catheter body, the second distal zone being spaced from and positioned proximal of the first distal zone. The pressure responsive exits permit fluid material to exit from the catheter lumen in response to internal fluid pressure which is greater than a predetermined magnitude. An intermediate zone is located between the first and second distal zones. A removable occluding member is adapted to be positioned within the catheter lumen. The occluding member has a sealing element with a collapsed insertion state and an expanded sealing state. When the sealing element is in the sealing state and positioned in the intermediate zone, it can be expanded to contact the inside surface of the side walls of the lumen in order to seal off fluid communications between the first and second distal zones. When the occluding member is in the sealed position, enzymatic fluid material is inserted through the lumen at a pressure greater than the predetermined magnitude to cause it to pass through the pressure responsive exits in order to contact any fibrin built up along the outside surface of the elongated catheter body radially expanding the catheter body causing the fibrin to loosen, dissolve and dissipate.

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patent: 5624413 (1997-04-01), Markel et al.
patent: 5647846 (1997-07-01), Berg et al.
patent: 5664567 (1997-09-01), Linder
patent: 5718692 (1998-02-01), Schon et al.
patent: 5776111 (1998-07-01), Tesio
patent: 5957901 (1999-09-01), Mottola et al.

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