发明名称 |
HIGH COMPLIANCE, HIGH STRENGTH CATHETER BALLOONS USEFUL FOR TREATMENT OF GASTROINTESTINAL LESIONS |
摘要 |
Balloon especially useful for dilatation of gastrointestinal lesions has a burst pressure of at least 9 atmospheres, a diameter at 3 atmospheres of about 5 mm or more, and an average compliance over the range of from 3 atmospheres to burst of at least 3 % per atmosphere. Such balloons and balloons having other combinations of burst strength, compliance and diameter may be prepared by a method wherein a tubing of a thermoplastic polymer material is radially expanded under a first elevated pressure at an elevated temperature to form the balloon at a first diameter and then annealing the balloon at a second elevated temperature and a second pressure less than the first elevated pressure for a time sufficient to shrink the formed balloon to a second diameter less than the first diameter. The thermoplastic polymer material may be a block copolymer material. Catheters bearing balloons prepared by this method have low withdrawal force requirements, especially catheters used in through-the-scope applications.
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申请公布号 |
WO9803218(A1) |
申请公布日期 |
1998.01.29 |
申请号 |
WO1997US12074 |
申请日期 |
1997.07.11 |
申请人 |
SCIMED LIFE SYSTEMS, INC. |
发明人 |
WANG, LIXIAO;FOURNIER, DONALD, J. |
分类号 |
A61L29/00;A61F2/958;A61M25/00;(IPC1-7):A61M25/00 |
主分类号 |
A61L29/00 |
代理机构 |
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主权项 |
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地址 |
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