Perfusion catheter and method

• US 4,661,094 A
• Filed: 05/03/1985
• Issued: 04/28/1987
• Est. Priority Date: 05/03/1985
• Status: Expired due to Term

• Current Assignee: Advanced Cardiovascular Systems Incorporated 1395 Charleston Road Mountain View CA
• Original Assignee: Advanced Cardiovascular Systems Incorporated
• Inventors: Simpson, John B.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US06/730,680
• Time in Patent Office: 725 Days
• Field of Search: 604/8, 604/164, 604/165, 604/266, 604/272, 604/280, 604/44, 604/283, 604/284, 604/264, 604/28, 604/49, 604/53, 128/657, 128/772
• US Class Current: 604/8
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61M 2025/1097 with perfusion means for enabling blood circulation only while the balloon is in an inflated state, e.g. temporary by-pass within balloon

Abstract

Perfusion catheter adapted to be positioned in at least a partially occluded blood vessel having a lesion or restriction therein comprising an elongate flexible plastic tubular member having a flow passage extending therethrough. The member has proximal and distal ends and a fitting carried by the proximal end. The member has a plurality of holes spaced apart longitudinally from the distal end and permitting the flow of liquid from and into the flow passage through the holes when the catheter is positioned in the lesion or restriction so that at least some of the holes are on one side of the lesion or restriction and other holes are on the other side of the lesion or restriction.

Claims

1. In a method for maintaining blood flow across a stenosis in a blood vessel by the use of a perfusion catheter comprised of a flexible tubular member having a flow passage extending longitudinally of the same and having a plurality of spaced apart holes spaced longitudinally from the distal extremity of the tubular member and in communication with the flow passage in the tubular member, the method comprising inserting the perfusion catheter into the blood vessel of the patient so that the perfusion catheter extends through the stenosis so that at least one of the holes in the perfusion catheter is disposed on one side of the stenosis and at least one of the holes is disposed on the other side of the stenosis and at least one of the holes is disposed on the other side of the stenosis so that blood can flow into and out of at least certain of the holes in the tubular member and through the flow passage in the tubular member and across the stenosis to thereby permit blood to continue to flow through the blood vessel and across the stenosis.

2. In a method for maintaining blood flow across a stenosis in a blood vessel by the use of a perfusion catheter comprised of a flexible tubular member having a flow passage extending longitudinally of the same and having a plurality of spaced apart holes spaced longitudinally from the distal extremity of the tubular member and in communication with the flow passage in the tubular member and a guide wire, the method comprising inserting a guide wire into a vessel of the patient so that the distal extremity of the guide wire crosses the stenosis in the blood vessel, and introducing the perfusion catheter into the blood vessel over the guide wire so that the perfusion catheter extends through the stenosis so that at least one of the holes in the perfusion catheter is disposed on one side of the stenosis and at least one of the holes is disposed on the other side of the stenosis so that blood can flow into and out of at least certain of the holes in the tubular member and through the flow passage in the tubular member and across the stenosis to thereby permit blood to continue to flow through the blood vessel and across the stenosis.