04338942 is referenced by 165 patents and cites 11 patents.

A dilatation catheter is provided with a double lumen tube and inner and outer inflatable and deflatable balloon elements, one within the other. The inner bag element is twisted for retraction while the outer bag element is inflated. Subsequent deflation of the outer bag element serves to further laterally compress the inner bag element and provide a smooth buffering surface for engagement with blood vessel walls as the catheter is moved past them.

Title
Dilatation catherter apparatus
Application Number
6/198342
Publication Number
4338942
Application Date
October 20, 1980
Publication Date
July 13, 1982
Inventor
Thomas J Fogarty
770 Welch Rd., Palo Alto, 94304
CA, US
Agent
Naylor Neal & Uilkema
IPC
A61M 29/02
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