Expandable retrieval device
First Claim
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1. A method of forming a medical device for retrieving an intravascular device from a body lumen, comprising;
- providing a braided member, including a plurality of filaments, adapted to radially expand and axially shorten when subjected to a tensile force, said braided member having a proximal end, a proximal portion, a distal end, a distal section adjacent to the distal end, and a lumen between the proximal end and the distal end sized and configured to receive an intravascular device to be retrieved;
extruding an elastomeric material over the distal section of the braided member;
cooling the elastomeric material to produce an elastomer coated braided member; and
attaching the elastomer coated braided member to an elongated shaft member having a flared distal section, wherein the proximal portion of the elastomer coated braided member extends proximally of a distal end of the elongated shaft member and is coupled to the flared distal section of the elongated shaft member, and the distal portion of the elastomer coated braided member extends distally of the distal end of the elongated shaft member,further wherein at least a portion of the proximal portion is encased within a wall of the flared distal section of the elongated shaft member.
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Abstract
A device for retrieving an intravascular device from a body lumen is disclosed. A retrieval device in accordance with an exemplary embodiment of the present invention includes a braided member coupled to an elongated shaft member. The braided member may include a number of filaments defining a radially expandable inner lumen configured to receive and encapsulate the intravascular device therein. An elastomeric jacket disposed about at least a portion of the braided member may encase the filaments.
265 Citations
6 Claims
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1. A method of forming a medical device for retrieving an intravascular device from a body lumen, comprising;
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providing a braided member, including a plurality of filaments, adapted to radially expand and axially shorten when subjected to a tensile force, said braided member having a proximal end, a proximal portion, a distal end, a distal section adjacent to the distal end, and a lumen between the proximal end and the distal end sized and configured to receive an intravascular device to be retrieved; extruding an elastomeric material over the distal section of the braided member; cooling the elastomeric material to produce an elastomer coated braided member; and attaching the elastomer coated braided member to an elongated shaft member having a flared distal section, wherein the proximal portion of the elastomer coated braided member extends proximally of a distal end of the elongated shaft member and is coupled to the flared distal section of the elongated shaft member, and the distal portion of the elastomer coated braided member extends distally of the distal end of the elongated shaft member, further wherein at least a portion of the proximal portion is encased within a wall of the flared distal section of the elongated shaft member. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification