Minimally-invasive medical retrieval device
First Claim
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1. A medical retrieval device comprising:
- an elongated cylindrical member having a passage extending therein and having metallic proximal and distal portions, and a retrieving portion defined in the distal portion, wherein the distal portion is formed from a metal and includes a shoulder and stepped portion of reduced outside diameter at a proximal end of the distal portion;
said proximal and distal portions formed as separate pieces and connected at a junction; and
whereby 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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Abstract
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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Citations
11 Claims
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1. A medical retrieval device comprising:
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an elongated cylindrical member having a passage extending therein and having metallic proximal and distal portions, and a retrieving portion defined in the distal portion, wherein the distal portion is formed from a metal and includes a shoulder and stepped portion of reduced outside diameter at a proximal end of the distal portion;
said proximal and distal portions formed as separate pieces and connected at a junction; and
whereby 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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A medical retrieval device comprising:
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an elongated cylindrical member having a passage extending therein and having a proximal portion including a braided sleeve and a distal portion, a retrieving portion defined in the distal portion, said proximal and distal portions formed as separate pieces and connected at a junction, the distal portion formed from a continuum of metal; and
whereby 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, wherein the proximal and distal portions are joined at the junction by a technique selected from the group consisting of welding, brazing, soldering and crimping. - View Dependent Claims (8, 9, 10, 11)
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Specification