发明名称 |
WIRE COLLECTION DEVICE WITH VARYING COLLECTION DIAMETER |
摘要 |
A stent delivery system includes a wire collection device which is constructed with a thumbwheel coupled to a collection spindle that is rotatable to collect a retraction wire about a varying collection diameter of the collection spindle. A proximal end of an outer stent-constraining sheath is coupled to the collection spindle by the retraction wire and a distal end of the outer sheath retractably surrounds a distally-disposed self-expanding stent. The collection spindle includes a substantially constant outer diameter greater than the varying collection diameter, and the varying collection diameter increases from a first end of the spindle towards a second end of the spindle along a spiral groove formed between the varying collection diameter and the substantially constant outer diameter in a manner that provides substantially constant rotating force on the thumbwheel, thereby accommodating changing resistance as the outer sheath is retracted and releases binding force of the stent. |
申请公布号 |
US2015250631(A1) |
申请公布日期 |
2015.09.10 |
申请号 |
US201514639566 |
申请日期 |
2015.03.05 |
申请人 |
Cook Medical Technologies LLC |
发明人 |
Cummins Sean |
分类号 |
A61F2/966 |
主分类号 |
A61F2/966 |
代理机构 |
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代理人 |
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主权项 |
1. A stent delivery system including a wire collection device, the device comprising:
a thumbwheel coupled to a collection spindle that is rotatable to collect a retraction wire about a varying collection diameter of the collection spindle, wherein: a proximal end of an outer stent-constraining sheath is coupled to the collection spindle by the retraction wire and a distal end of the outer sheath retractably surrounds a distally-disposed self-expanding stent; the collection spindle comprises a substantially constant outer diameter greater than the varying collection diameter; and the varying collection diameter increases from a first end of the spindle towards a second end of the spindle along a spiral groove formed between the varying collection diameter and the substantially constant outer diameter in a manner that provides substantially constant rotating force on the thumbwheel, accommodating changing resistance as the outer sheath is retracted and releases binding force of the stent. |
地址 |
Bloomington IN US |