Beaded basket retrieval device
First Claim
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1. A medical retrieval device for capturing material in the body of a patient, comprising:
- at least two loops, each of the at least two loops comprising a plurality of beads, a first end, and a second end,the first end of at least one loop being fixed and the second end of the at least one loop being slideably moveable relative to the first end, slideable movement of the second end of the at least one loop moving the at least one loop for capturing material in the body of the patient;
a tapered distal tip linking the at least two loops, the at least one loop being slideably moveable relative to the tip,the tip having a proximal-most end and a side surface extending distally therefrom, the side surface defining a plurality of apertures;
a sheath having a distal portion, a proximal portion, and defining a lumen; and
wherein the at least two loops comprise two positions, a retracted position wherein the loops are constrained within the lumen of the sheath, and a deployed position wherein the loops are extended beyond the distal portion of the sheath, and the deployed position comprises a deployed expanded position wherein the loops are expanded, and a deployed collapsed position wherein the loops are collapsed.
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Abstract
A medical retrieval device, and related method, for removing material (such as calculi and stones) from the body of a patient has the ability to capture and readily release material. The retrieval device includes a basket having at least one loop with first and second ends including a plurality of bead elements. The first end of the loop is immovable and the second end of the loop is slideably movable.
159 Citations
34 Claims
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1. A medical retrieval device for capturing material in the body of a patient, comprising:
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at least two loops, each of the at least two loops comprising a plurality of beads, a first end, and a second end, the first end of at least one loop being fixed and the second end of the at least one loop being slideably moveable relative to the first end, slideable movement of the second end of the at least one loop moving the at least one loop for capturing material in the body of the patient; a tapered distal tip linking the at least two loops, the at least one loop being slideably moveable relative to the tip, the tip having a proximal-most end and a side surface extending distally therefrom, the side surface defining a plurality of apertures; a sheath having a distal portion, a proximal portion, and defining a lumen; and wherein the at least two loops comprise two positions, a retracted position wherein the loops are constrained within the lumen of the sheath, and a deployed position wherein the loops are extended beyond the distal portion of the sheath, and the deployed position comprises a deployed expanded position wherein the loops are expanded, and a deployed collapsed position wherein the loops are collapsed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for retrieving material from a body, the system comprising:
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an elongated member comprising a distal end, and a proximal end; a basket disposed at the distal end of the elongated member, the basket comprising a plurality of legs formed by at least two loops, each of the at least two loops comprising a first end and a second end, the first end of at least one loop being fixed and the second end of the at least one loop being slideably moveable relative to the first end; a tapered distal tip linking the at least two loops, the at least one loop being slideably moveable relative to the tip, the tip having a proximal-most end and a side surface extending distally therefrom, the side surface defining a plurality of apertures; a plurality of beads having a lumen with a portion of one of the plurality of legs extending therethrough; a sheath having a lumen, wherein the basket has a retracted position in which the basket is positioned in the lumen of the sheath, a deployed position in which the basket is positioned beyond the distal portion of the sheath and open, and a collapsed position in which the basket is extended beyond the distal portion of the sheath and the plurality of legs are collapsed; a proximal handle including a first actuator and a second actuator, the first actuator moveable relative to the second actuator to move the basket and sheath relative to one another between the retracted position and deployed position; and the second actuator moveable relative to the first actuator to move the basket between the deployed position and the collapsed position. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification