发明名称 |
Catheter with soft deformable tip |
摘要 |
A catheter for insertion in a body orifice or blood vessel comprising an elongated tubular body with a soft, symmetrically deformable member on the distal end thereof for decreasing the likelihood of injury to body tissue upon the insertion and removal thereof. In one embodiment, the tip member comprises a toroidally shaped inflatable and non-distensible expandable "balloon" mounted on the end of the otherwise relatively rigid tip of the catheter. The catheter has a lumen extending the length thereof and communicating with the tip member whereby a fluid may be introduced to control the size, shape and firmness of the tip member. In a second embodiment, the soft deformable tip member comprises an annular plastic or rubber sleeve surrounding the otherwise rigid tip of the catheter and normally extending there beyond by a predetermined distance. The thickness or composition of the sleeve is varied about a circumferential ring so as to provide a preferred location for the collapse of the sleeve.
|
申请公布号 |
US4531943(A) |
申请公布日期 |
1985.07.30 |
申请号 |
US19830520996 |
申请日期 |
1983.08.08 |
申请人 |
ANGIOMEDICS CORPORATION |
发明人 |
VAN TASSEL, ROBERT A.;RYDELL, MARK A.;SCHJELDAHL, GILMORE T. |
分类号 |
A61M25/04;A61F2/958;A61M25/00;A61N1/05;(IPC1-7):A61M25/00 |
主分类号 |
A61M25/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|