Microporous catheter

Details Microporous catheter Microporous catheter

1996-05-08

1998-09-01

Coggins, Wynn Wood

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 20, 604 21, A61M 2900

Patent

active

058003924

ABSTRACT:
An apparatus for delivering an agent to a treatment area. The apparatus includes a catheter that has a distal portion and a proximal portion. The catheter defines a lumen. A pressure regulator is in fluid communication with the lumen. A selectively inflatable member is also in fluid communication with the lumen, and is formed from a membrane. The membrane has first and second portions. The first portion defines pores sized from about 0.05 .mu. to about 1 .mu. and has a pore density from about 10.sup.6 pores/cm.sup.2 to about 10.sup.9 pores/cm.sup.2. The flux rate is from about 0.001 ml/(min.multidot.cm.sup.2 .multidot.atm) to about 0.4 ml/(min.multidot.cm.sup.2 .multidot.atm). The second portion is substantially impermeable.

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Wolinsky et al., "Use of a Perforated Balloon Catheter to Deliver Concentrated Heparin into the Wall of the Normal Canine Artery" JACC, vol. 15, No. 2, at 475-481 (1990).

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