发明名称 |
Guidewire with an intermediate variable stiffness section |
摘要 |
The invention is directed to an guide wire for intraluminal deployment of a medical device within a patient, the guide wire having an elongate core member with an intermediate core section comprising a plurality of contiguous segments in alignment with the longitudinal axis of the core member with alternating flexible and rigid core segments, so that the articulated section bends in a discontinuous, discrete manner when advanced through a curved blood vessel or other body lumen within the patient. When an obstruction on a vessel wall causes the catheter or other coaxial device to be impeded, the guide wire and intermediate core section may alternately be advanced and retracted a short distance through the catheter distal tip causing a "nodding" motion of the catheter tip while the catheter is pushed through the vessel, so as to avoid and bypass the vessel obstruction.
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申请公布号 |
US2003083643(A1) |
申请公布日期 |
2003.05.01 |
申请号 |
US20020310392 |
申请日期 |
2002.12.05 |
申请人 |
WILSON W. STAN;ESSELSTEIN ROBERT C.;CORNISH WAYNE E.;RICHARDSON MARK T. |
发明人 |
WILSON W. STAN;ESSELSTEIN ROBERT C.;CORNISH WAYNE E.;RICHARDSON MARK T. |
分类号 |
A61M25/00;A61M25/09;(IPC1-7):A61M25/00 |
主分类号 |
A61M25/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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