04554929 is referenced by 316 patents and cites 5 patents.

Guide wire and method for insertion and use of a catheter. The guide wire has a shaft of substantially smaller diameter than the luminal opening, with a flexible coil at one end of the shaft. The guide wire is inserted into the cardiovascular system, and the catheter is advanced along the guide wire to the desired position, with the flexible coil outside the distal end of the catheter. An annular passageway is formed between the shaft and the wall of the luminal opening, and fluids are passed through this passageway while the guide wire is within the catheter. A marker of radio opaque material is provided at the distal end of the guide wire so that the position of the wire can be accurately determined even though the wire itself may be too small to be visible with a fluoroscope.

Title
Catheter guide wire with short spring tip and method of using the same
Application Number
6/513222
Publication Number
4554929
Application Date
July 13, 1983
Publication Date
November 26, 1985
Inventor
Ronald J Solar
Palo Alto
CA, US
Wilfred J Samson
Saratoga
CA, US
Agent
Flehr Hohbach Test Albritton & Herbert
Assignee
Advanced Cardiovascular Systems
CA, US
IPC
A61B 5/02
View Original Source