04728319 is referenced by 337 patents and cites 10 patents.

An intravascular catheter includes a flexible guide wire mounted for relative rotational and reciprocal movements within a reciprocal and flexible first tube. A rotary and flexible second tube is mounted on the first tube to define an annular passage therebetween and has a rotary inner cutting head secured on a distal end thereof. The inner cutting head is closely fitted within an outer cutting head that is secured on the first tube. The cutting heads are adapted to cut a blockage in a blood vessel into fragments in response to rotation of the second tube and inner cutting head. The fragments are flushed-out from the inner cutting head and are conveyed away from the cutting heads and through the annular passage by facing spiral threads defined on the first and second tubes.

Title
Intravascular catheter
Application Number
841879
Publication Number
4728319
Application Date
May 21, 1986
Publication Date
March 1, 1988
Inventor
Helmut Masch
764 Asbury St., San Jose, 95126
CA, US
Agent
Phillips Moore Lempio & Finley
IPC
A61B 17/20
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