Autoperfusion dilatation catheter having a bonded channel
First Claim
1. An autoperfusion dilatation balloon catheter useful in angioplasty comprisinga catheter shaft,mounted on said shaft, an inflatable non-elastomeric balloon having an outer surface and proximal and distal ends disposed along the length of said catheter shaft, said balloon when inflated having a channel in its outer surface whereby when said balloon is fully inflated and exerts pressure on the inner surface of a blood vessel in which blood is flowing, blood continues flowing between said outer surface of said balloon and said inner surface of said blood vessel through said channel, anda band tightly mounted over the outside surface of said balloon on a line along the length of said catheter shaft and fixedly attached to said catheter shaft at or beyond each of said balloon proximal and distal ends, whereby said band exerts a force on said balloon outside surface directed inward toward said catheter shaft along said line when said balloon is inflated, whereby said channel is formed in said balloon outer surface when inflated.
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Accused Products
Abstract
An autoperfusion dilatation catheter useful in angioplasty comprises a conventional catheter shaft and an inflatable balloon. The catheter is designed such that the balloon, when inflated, has an outer surface relief-structure whereby when this outer surface is fully inflated and exerts pressure on the inner surface of a blood vessel, blood continues to flow between the outer surface of the balloon and the blood vessel surface. Preferably, the relief structure is a channel formed in the outer surface of the balloon by the pressure of a band attached to the catheter and which presses against the outer surface of the balloon.
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Citations
12 Claims
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1. An autoperfusion dilatation balloon catheter useful in angioplasty comprising
a catheter shaft, mounted on said shaft, an inflatable non-elastomeric balloon having an outer surface and proximal and distal ends disposed along the length of said catheter shaft, said balloon when inflated having a channel in its outer surface whereby when said balloon is fully inflated and exerts pressure on the inner surface of a blood vessel in which blood is flowing, blood continues flowing between said outer surface of said balloon and said inner surface of said blood vessel through said channel, and a band tightly mounted over the outside surface of said balloon on a line along the length of said catheter shaft and fixedly attached to said catheter shaft at or beyond each of said balloon proximal and distal ends, whereby said band exerts a force on said balloon outside surface directed inward toward said catheter shaft along said line when said balloon is inflated, whereby said channel is formed in said balloon outer surface when inflated.
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11. In a method of performing an angioplasty procedure using a dilatation balloon catheter, the improvement wherein the catheter is an autoperfusion dilatation balloon catheter useful in angioplasty comprising
a catheter shaft, mounted on said shaft, an inflatable non-elastomeric balloon having an outer surface and proximal and distal ends disposed along the length of said catheter shaft, said balloon when inflated having a channel in its outer surface whereby when said balloon is fully inflated and exerts pressure on the inner surface of a blood vessel in which blood is flowing, blood continues flowing between said outer surface of said balloon and said inner surface of said blood vessel through said channel, and a band tightly mounted over the outside surface of said balloon on a line along the length of said catheter shaft and fixedly attached to said catheter shaft at or beyond each of said balloon proximal and distal ends, whereby said band exerts a force on said balloon outside surface directed inward toward said catheter shaft along said line when said balloon is inflated, whereby said channel is formed in said balloon outer surface when inflated, wherein the length of time the balloon of said catheter can safely remain inflated is increased.
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12. In a method of repairing a damaged blood vessel wall using a dilatation balloon catheter as an inflatable stent, the improvement wherein the catheter is an autoperfusion dilatation balloon catheter useful in angioplasty comprising
a catheter shaft, mounted on said shaft, an inflatable non-elastomeric balloon having an outer surface and proximal and distal ends disposed along the length of said catheter shaft, said balloon when inflated having a channel in its outer surface whereby when said balloon is fully inflated and exerts pressure on the inner surface of a blood vessel in which blood is flowing, blood continues flowing between said outer surface of said balloon and said inner surface of said blood vessel through said channel, and, a band tightly mounted over the outside surface of said balloon on a line along the length of said catheter shaft and fixedly attached to said catheter shaft at or beyond each of said balloon proximal and distal ends, whereby said band exerts a force on said balloon outside surface directed inward toward said catheter shaft along said line when said balloon is inflated, whereby said channel is formed in said balloon outer surface when inflated, wherein the length of time the balloon of said catheter can safely remain inflated is increased.
Specification
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- Resources
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Current AssigneeDianne M.F. Plunkett, Medtronic Incorporated (Medtronic Plc)
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Original AssigneeMedtronic Incorporated (Medtronic Plc)
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InventorsAnderson, R. David, Gurbel, Paul A.
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Primary Examiner(s)Rosenbaum, C. Fred
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Assistant Examiner(s)Maglione, Corrine
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Application NumberUS07/850,638Time in Patent Office739 DaysField of Search606/191-192, 606/194, 604/96, 604/101, 604/103US Class Current604/103.13CPC Class CodesA61M 2025/1097 with perfusion means for en...A61M 25/1002 characterised by balloon sh...A61M 25/104 used for angioplasty
