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:
Nov. 28, 1995
Filed:
Jul. 22, 1994
Paul Walinsky, Wyndmoor, PA (US);
Other;
Abstract
A perfusion balloon catheter (10), as for angioplasty by dilatation, has the balloon (30) formed so that, when inflated within a vas or coronary artery, one or more channels (40) are provided for the flow of bodily fluids or blood past the inflated balloon. In one embodiment, the balloon has a toroidal shape which defines a central open channel. In order to avoid closure of the central channel when the balloon inflation pressure is increased to distend the vas within which it is placed, a portion (44) of the balloon is made from a relatively elastic membrane, and the portion of the balloon (244) adjacent the channel (40) is made from a relatively less elastic material, or a rigid material, whereby additional pressure does not cause channel closure.