The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 1996
Filed:
Jan. 23, 1995
Joel R Racchini, Edina, MN (US);
CorTrak Medical Inc., Minneapolis, MN (US);
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.