05538504 is referenced by 88 patents and cites 3 patents.

A drug delivery catheter is provided which includes a catheter comprised of an elongated tubular shaft with an inner lumen and a vessel puncturing element which is housed in the lumen. The puncturing element has a retracted position such that it will not be in contact with the vessel wall as the catheter is guided through the vasculature. The puncturing element also has a puncturing position where it protrudes radially outward of the catheter shaft and engages and punctures the vessel wall. The catheter is first inserted into the vessel to be treated and the puncturing element is positioned at the site in the vessel to be treated. The puncturing element is then moved to its puncturing position and the inner surface of the vessel wall is punctured. A drug is then delivered through the puncture. The drug may be delivered into either the vessel wall itself or to the outside of the vessel wall.

Title
Intra-extravascular drug delivery catheter and method
Application Number
913227
Publication Number
5538504
Application Date
July 1, 1994
Publication Date
July 23, 1996
Inventor
Robert E Atkinson
New Brighton
MN, US
Peter T Keith
Fridley
MN, US
Donald F Palme II
Dayton
MN, US
Bradley C Linden
Minneapolis
MN, US
Agent
Brinks Hofer Gilson & Lione
Assignee
SciMed Life Systems
MN, US
IPC
A61M 31/00
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