BALLOON CATHETER SHAFT HAVING HIGH STRENGTH AND FLEXIBILITY
First Claim
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1. A balloon catheter, comprising:
- an elongated shaft having a proximal end and a distal end, the elongated shaft including a biaxially oriented nonporous thermoplastic polymer tubular member having a Shore durometer hardness of less than about 75 D with an inflation lumen defined therein; and
a balloon sealingly secured proximate the distal end of the shaft and having an interior in fluid communication with the inflation lumen.
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Abstract
Balloon catheter comprises an elongated shaft having a proximal end and a distal end, the elongated shaft including a biaxially oriented nonporous thermoplastic polymer tubular member having a Shore durometer hardness of less than about 75 D with an inflation lumen defined therein. The balloon catheter also comprises a balloon sealing secured proximate the distal end of the shaft and having an interior in fluid communication with the inflation lumen.
23 Citations
35 Claims
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1. A balloon catheter, comprising:
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an elongated shaft having a proximal end and a distal end, the elongated shaft including a biaxially oriented nonporous thermoplastic polymer tubular member having a Shore durometer hardness of less than about 75 D with an inflation lumen defined therein; and a balloon sealingly secured proximate the distal end of the shaft and having an interior in fluid communication with the inflation lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A balloon catheter prepared by a process comprising:
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a) melt-extruding a thermoplastic polymeric material having a Shore durometer hardness of less than about 75 D at an elevated temperature into a tube having a first outer diameter, a first inner diameter, and a tube lumen defined therein, and cooling the extruded tube to a temperature less than the elevated temperature of the melt-extrusion; b) placing the extruded tube within a capture member and biaxially orienting the polymeric material of the extruded tube by radially expanding the extruded tube with pressurized media in the tube lumen and axially expanding the extruded tube with a load applied on at least one end of the tube; and c) cooling the expanded tube to room temperature to form a biaxially oriented nonporous thermoplastic polymer tubular member with an inflation lumen defined therein; and d) sealingly securing a balloon proximate to a distal end of the tubular member with an interior of the balloon in fluid communication with the inflation lumen. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification