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US 8,007,502 B2Granted
Laser-resistant medical retrieval device
AssigneeSciMed Life Systems, Inc.
InventorsMichael S. H. Chu, George Bourne
Life of this patent
Estimating the term…
Abstract
A medical device used for retrieving material from within a body includes an engaging assembly in which at least a portion of the engaging assembly is resistant to laser energy-induced damage.
Claims43
A medical device comprising:
- a proximal handle;
- a sheath extending distally from the handle end having a lumen;
- an engaging assembly that consists essentially of a single layer and a plurality of legs for engaging material within a body;
- and
- an elongate member connected to the engaging assembly and extending proximally from the engaging assembly within the lumen of the sheath, the engaging assembly and sheath movable relative to each other to achieve a first state of the engaging assembly when the engaging assembly is within the lumen of the sheath and a second state of the engaging assembly when the engaging assembly extends from a distal end of the sheath, wherein the plurality of legs each have a proximal end directly joined to the elongate member and a distal end permanently secured to a corner of the layer, wherein the layer is a laser resistant fabric consisting essentially of plastics,
- wherein the distal ends of the plurality of legs are separated and interconnected by only the laser resistant fabric, and
- wherein the laser resistant fabric is directly secured to only the plurality of legs.
4 more elements
A medical device comprising:
- a sheath extending distally having a lumen;
- an engaging assembly that consists essentially of a single layer and a plurality of legs for engaging material within a body;
- an elongate member connected to the engaging assembly and extending proximally from the engaging assembly within the lumen of the sheath, the engaging assembly and sheath movable relative to each other to achieve a first state of the engaging assembly when the engaging assembly is within the lumen of the sheath and a second state of the engaging assembly when the engaging assembly extends from a distal end of the sheath;
- and
- wherein the plurality of legs each have a proximal end directly joined to the elongate member and a distal end permanently secured to a corner of the layer, wherein the layer is a laser resistant fabric consisting essentially of plastics,
- wherein the distal ends of the plurality of legs are separated and interconnected by only the laser resistant fabric,
- wherein the laser resistant fabric is directly secured to only the plurality of legs, and
- wherein the distal ends of each leg are spaced at approximately an equal distance from each other when the engaging assembly is in the second state.
5 more elements
A medical device comprising:
- a sheath extending distally having a lumen;
- an engaging assembly that consists essentially of a single layer and at least three legs for engaging material within a body;
- an elongate member connected to the engaging assembly and extending proximally from the engaging assembly within the lumen of the sheath, the engaging assembly and sheath movable relative to each other to achieve a first state of the engaging assembly when the engaging assembly is within the lumen of the sheath and a second state of the engaging assembly when the engaging assembly extends from a distal end of the sheath;
- and
- wherein the at least three legs each have a proximal end directly joined to the elongate member and a distal end permanently secured to a corner of the layer, wherein the layer is a laser resistant fabric consisting essentially of plastics,
- wherein the distal ends of the at least three legs are separated and interconnected by only the laser resistant fabric, and
- wherein the laser resistant fabric is directly secured to only the at least three legs.
4 more elements
Dependencies are inferred from the claim text.