05100424 is referenced by 286 patents and cites 11 patents.

Front-end and side-on intravascular catheters are described that comprise an abrasive head contained substantially within a housing. Aspiration means and flushing means are connected to the region of grinding to remove dislodged debris. A preferred embodiment has the abrasive surface of a rotatable head comprised of diamond powder, fused silica, tungsten carbide, aluminum oxide, or boron nitride. Another preferred embodiment has an ultrasonic transducer affixed to the head to permit transluminal imaging of the site of occlusion.

Title
Intravascular catheter having combined imaging abrasion head
Application Number
7/526413
Publication Number
5100424
Application Date
May 21, 1990
Publication Date
March 31, 1992
Inventor
William M Belef
San Jose
CA, US
Yue Teh Jang
Fremont
CA, US
Agent
Townsend and Townsend
Assignee
Cardiovascular Imaging Systems
CA, US
IPC
A61B 8/12
A61M 25/00
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