04926858 is referenced by 455 patents and cites 18 patents.

An atherectomy catheter for removal of plaque buildup from the walls of a blood vessel. The atherectomy catheter includes a cutter assembly disposed at the distal end of a flexible guide tube that may be inserted into a vessel and directed to the occlusion. A proximal actuator assembly is adapted to impart both rotary and axial movement to the cutter. The cutter assembly includes a cutter having a forwardly extending annular cutting surface. A guide wire with a flexible spring tip extends forward of the cutter for guiding the cutter as it travels axially through the artery. All of the removed atheroma materials are collected within the device and a retention member carried by the guide wire and positioned in front of the cutter forms a cap to retain the collected atheroma materials. In a disclosed embodiment, the retention member is expandable, and in one of the preferred embodiments, the retention member may be expanded to engage the vessel walls to anchor the device during the cutting stroke.

Title
Atherectomy device for severe occlusions
Application Number
615298
Publication Number
4926858
Application Date
August 7, 1989
Publication Date
May 22, 1990
Inventor
Peter S Brown
Los Altos Hills
CA, US
John B Simpson
Woodside
CA, US
Hanson S Gifford III
Palo Alto
CA, US
Agent
Townsend & Townsend
Assignee
Devices for Vascular Intervention
CA, US
IPC
A61F 17/32
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