| 摘要 |
A medical retrieval device is provided which includes an elongated cylindrical member having a passage extending therein and having a metallic proximal and distal portions. The proximal and distal portions are formed as separate pieces and connected at a junction. The elongated cylindrical member has an area of substantially constant inner and outer diameters extending at least from a portion of the proximal portion closely adjacent to the junction through the junction and to a portion of the distal portion closely adjacent to the junction.
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