发明名称 |
Stent placement and retrieval. |
摘要 |
Placement and non-surgical retrieval of a ureteral stent is accomplished in one embodiment by suspending a ferromagnetic bead from an indwelling stent. The bead is suspended by a flaccid tether that reduces the likelihood of patient irritation when a shortened stent is used. The bead, tether, and stent assembly are advanced into the patient as a unit via a conventional cystoscope. A magnet-tipped catheter is employed to engage the bead in the bladder and permit removal of the connected stent as the catheter is withdrawn. In another embodiment, a collapsible basket is suspended from an indwelling stent. The basket is suspended by a flaccid tether that reduces the likelihood of patient irritation when a shortened stent is used. The basket is deployed in the bladder into its normal, generally ovoid configuration. A retrieval instrument having extensible graspers readily engage the hoop or ribs that make up the basket, thereby permitting retrieval of the connected stent as the instrument is withdrawn. |
申请公布号 |
HK1037314(A1) |
申请公布日期 |
2005.02.04 |
申请号 |
HK20010105755 |
申请日期 |
2001.08.16 |
申请人 |
BIU BIOMEDICAL INNOVATIONS (UROLOGY) INC. |
发明人 |
TAYLOR, WILLIAM, N.;IAN MCDOUGALL |
分类号 |
A61F2/04;A61F2/06;A61F2/84;A61F2/94;(IPC1-7):A61F |
主分类号 |
A61F2/04 |
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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