Medical retrieval basket
First Claim
1. A medical retrieval basket comprising:
- a first elongated member having a proximal end, a distal end, and a first hollow passageway longitudinally positioned therebetween;
a first superelastic metallic alloy wire having first and second ends extending through said first hollow passageway and fixedly positioned about said proximal end of said first member, said first wire forming a first loop extending longitudinally and distally from said distal end of said first member; and
a second superelastic metallic alloy wire having first and second ends extending through said first hollow passageway and fixedly positioned about said proximal end of said first member, said second wire forming a second loop extending longitudinally and distally from said distal end of said first member and interconnected distally to said first loop, whereby said said first and second loops interconnected distally form a bulbous shape for atraumatically capturing calculi with a heat-on approach.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical retrieval basket having superelastic metallic alloy wires attached to the distal end of an inner elongated member tube for percutaneously capturing and removing calculi from a cavity or duct of a patient. The basket comprises kink-resistant superelastic metallic alloy wires such as nitinol which forms a bulbous shape for capturing calculi therein. The ends of the superelastic wires of the basket extend through the passageway of the inner elongated member tube and are attached to the proximal end of the tube. An outer elongated member tube is percutaneously inserted into the biliary or urinary system. The inner member tube is inserted through the outer member tube into a duct, cavity or organ of the patient. The distal ends of both the inner and outer member tubes have a predetermined longitudinal curvature for controlling the positioning of the basket and the tubes within the patient. A sleeve is provided at the proximal end of the inner member tube for limiting the insertion thereof in the outer member tube.
-
Citations
20 Claims
-
1. A medical retrieval basket comprising:
-
a first elongated member having a proximal end, a distal end, and a first hollow passageway longitudinally positioned therebetween; a first superelastic metallic alloy wire having first and second ends extending through said first hollow passageway and fixedly positioned about said proximal end of said first member, said first wire forming a first loop extending longitudinally and distally from said distal end of said first member; and a second superelastic metallic alloy wire having first and second ends extending through said first hollow passageway and fixedly positioned about said proximal end of said first member, said second wire forming a second loop extending longitudinally and distally from said distal end of said first member and interconnected distally to said first loop, whereby said said first and second loops interconnected distally form a bulbous shape for atraumatically capturing calculi with a heat-on approach. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A medical retrieval basket comprising:
-
a first tube having a first proximal end, a first distal end, and a first passageway longitudinally positioned therebetween; a second tube having a second proximal end, a second distal end, and a second passageway longitudinally positioned therebetween and removably inserted in said first tube passageway, said first and second tubes each having a predetermined longitudinal curvature about said distal ends thereof; first, second, and third superelastic metallic alloy wires each having a pair of ends extending longitudinally through said second passageway and fixedly positioned therein about said second proximal end, said first, second, and third wires forming respective first, second, and third loops extending longitudinally and distally from said second distal end; and a fastener interconnecting said loops distally, whereby said said first and second loops interconnected distally form a bulbous shape for atraumatically capturing calculi with a head-on approach. - View Dependent Claims (16, 17, 18, 19)
-
-
20. A medical retrieval basket comprising:
-
a TEFLON tube having a first distal end, a first proximal end, and a first passageway extending longitudinally therebetween; a polyethylene tube having a tapered distal end, a second proximal end, and a second passageway extending longitudinally therebetween and removably inserted in said first passageway, said second tube having a double wall sleeve attached about said second proximal end and sized larger than first said passageway, said tubes each having a predetermined longitudinal curvature about said distal end thereof; first, second, and third nitinol wires each having a superelastic state and a pair of ends extending longitudinally through said second passageway and fixedly positioned therein about said second proximal end, said first, second and third wires forming respective first, second and third loops extending longitudinally and distally from said second distal end; and a suture and a urethane coating fixedly interconnecting said loops at a farmost distal position thereof, said first tube passageway being sized for withdrawing said loops in a collapsed state therethrough.
-
Specification