Retrieval apparatus and methods for use
First Claim
1. An apparatus for retrieving material within a body lumen, the apparatus comprising:
- an elongate cylindrical member including a proximal end, a distal end sized for introduction into a body lumen, the elongate cylindrical member defining an elongate cylindrical member lumen extending between the proximal end and the distal end of the elongate cylindrical member;
a wire configured to be received within the elongate cylindrical member lumen, the wire including a proximal end and a distal end extending distally beyond the distal end of the elongate cylindrical member;
a distal basket directly connected to the wire proximal to the distal end of the wire;
a proximal basket connected to the distal end of the elongate cylindrical member proximal to and spaced apart from the distal basket;
a middle mesh portion extending between the distal basket and the proximal basket; and
a tubular member comprising a proximal end and a distal end sized for introduction into the body lumen, the tubular member defining a tubular member lumen extending between the proximal end and the distal end of the tubular member, the tubular member lumen receiving the elongate cylindrical member, wherein;
the proximal and distal baskets are expandable from a contracted condition when disposed within the tubular member lumen to an expanded condition sized for capturing material within the proximal and distal baskets,the distal basket and the proximal basket each comprise an open end oriented towards one another, a circumferential wall, and a closed end opposite the open end,at least one of the baskets in the expanded condition is configured to be movable towards the other when the elongate cylindrical member or wire is moved relative to the other for substantially enclosing and capturing material within interiors of the baskets in the expanded condition,the baskets are biased to resiliently expand to the expanded condition upon being deployed, andthe baskets and the middle mesh portion each have a tubular mesh structure.
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Accused Products
Abstract
An apparatus for capturing material within a body lumen includes a shaft carrying an expandable basket device on a distal end thereof. The basket device includes a distal basket carried and a proximal basket carried on the shaft such that the proximal basket is proximal to and spaced apart from the distal basket. Each basket includes an open end communicating with an interior of the respective basket and oriented towards one another. In one embodiment, a tubular middle portion extends between the baskets. In another embodiment, the distal basket includes an actuator coupled to the distal basket open end such that movement of the baskets towards one another causes the actuator to direct the distal basket open end inwardly to allow the open end to be received within the proximal basket to facilitate removal of the apparatus after capturing material within the baskets.
20 Citations
23 Claims
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1. An apparatus for retrieving material within a body lumen, the apparatus comprising:
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an elongate cylindrical member including a proximal end, a distal end sized for introduction into a body lumen, the elongate cylindrical member defining an elongate cylindrical member lumen extending between the proximal end and the distal end of the elongate cylindrical member; a wire configured to be received within the elongate cylindrical member lumen, the wire including a proximal end and a distal end extending distally beyond the distal end of the elongate cylindrical member; a distal basket directly connected to the wire proximal to the distal end of the wire; a proximal basket connected to the distal end of the elongate cylindrical member proximal to and spaced apart from the distal basket; a middle mesh portion extending between the distal basket and the proximal basket; and a tubular member comprising a proximal end and a distal end sized for introduction into the body lumen, the tubular member defining a tubular member lumen extending between the proximal end and the distal end of the tubular member, the tubular member lumen receiving the elongate cylindrical member, wherein; the proximal and distal baskets are expandable from a contracted condition when disposed within the tubular member lumen to an expanded condition sized for capturing material within the proximal and distal baskets, the distal basket and the proximal basket each comprise an open end oriented towards one another, a circumferential wall, and a closed end opposite the open end, at least one of the baskets in the expanded condition is configured to be movable towards the other when the elongate cylindrical member or wire is moved relative to the other for substantially enclosing and capturing material within interiors of the baskets in the expanded condition, the baskets are biased to resiliently expand to the expanded condition upon being deployed, and the baskets and the middle mesh portion each have a tubular mesh structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for removing a material within a body lumen of a patient, the method comprising:
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introducing a basket device into the body lumen in a contracted condition, the basket device comprising; a proximal basket and a distal basket spaced apart from one another, each basket comprising an open end oriented towards one another, and each basket comprising a circumferential wall and a closed end opposite the open end, and a middle mesh portion extending between the distal basket and the proximal basket, the baskets and the middle mesh portion being formed from a tubular mesh structure; deploying the distal basket such that the distal basket resiliently expands within the body lumen and the open end of the distal basket is disposed distal to the material to be removed; deploying the mesh middle portion; deploying the proximal basket such that the proximal basket resiliently expands within the body lumen and the open end of the proximal basket is disposed proximal to the material to be removed; directing at least one of the proximal and distal baskets towards the other to capture the material through the open ends into interiors of the proximal and distal baskets; and removing the basket device capturing the material from the body lumen, wherein the mesh middle portion is substantially flexible such that the mesh middle portion is compressed axially when at least one of the proximal and distal baskets is moved toward the other for capturing material within the interiors of the baskets. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification