Clot retrieval system
First Claim
1. A system for removing objects adhered to a wall of an interior lumen of an animal, the system comprising:
- a pull wire having a proximal end and a distal end;
a distal body attached to said pull wire, said distal body comprising an interior, an exterior, a proximal end, a distal end, a plurality of proximal memory metal strips located at said proximal end, a proximal hub located in said distal body interior, and a distal hub located distal relative to said proximal hub, said distal body having a relaxed state wherein said distal body has a first height and width, and a collapsed state wherein said distal body has a second height and width, said second height less than said first height, said second width less than said first width;
a catheter having an interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal body when said distal body is in said collapsed state;
wherein each of said proximal memory metal strips has a proximal end and a distal end,wherein, in said relaxed state, each of said proximal ends of said memory metal strips is located proximal relative to said proximal hub,wherein, in said relaxed state, said proximal ends of said proximal memory metal strips are configured to move towards each other and towards said pull wire, while remaining a fixed distance from said distal hub, by moving said proximal hub distally towards said distal hub,wherein, in said relaxed state, said proximal ends of said proximal memory metal strips are configured to move away from each other and away from said pull wire, by moving said proximal hub proximally and away from said distal hub, andwherein said proximal memory metal strips are configured to remove an object adhered to a wall of an interior lumen of an animal.
1 Assignment
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Accused Products
Abstract
The present invention relates to a system for removing obstructions and other objects within a blood vessel or other interior lumen of an animal. The system may be deployed in the lumen from a catheter and includes a pull wire having a proximal end and a distal end, and a distal body. Optionally, the distal body includes a plurality of memory metal strips that form a closeable claw that is used to capture the obstruction. Optionally, the memory metal strips are connected to a proximal hub that is slideable along at least a segment of the pull wire and the memory metal strips are moved towards each other and towards the pull wire by moving the proximal hub distally towards a stationary distal hub, which in turn, causes the claw to close and capture the obstruction. The present invention also relates to methods of making and using such systems.
90 Citations
30 Claims
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1. A system for removing objects adhered to a wall of an interior lumen of an animal, the system comprising:
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a pull wire having a proximal end and a distal end; a distal body attached to said pull wire, said distal body comprising an interior, an exterior, a proximal end, a distal end, a plurality of proximal memory metal strips located at said proximal end, a proximal hub located in said distal body interior, and a distal hub located distal relative to said proximal hub, said distal body having a relaxed state wherein said distal body has a first height and width, and a collapsed state wherein said distal body has a second height and width, said second height less than said first height, said second width less than said first width; a catheter having an interior, a proximal end leading to said interior and a distal end leading to said interior, said catheter comprised of a biocompatible material and configured to envelope said distal body when said distal body is in said collapsed state; wherein each of said proximal memory metal strips has a proximal end and a distal end, wherein, in said relaxed state, each of said proximal ends of said memory metal strips is located proximal relative to said proximal hub, wherein, in said relaxed state, said proximal ends of said proximal memory metal strips are configured to move towards each other and towards said pull wire, while remaining a fixed distance from said distal hub, by moving said proximal hub distally towards said distal hub, wherein, in said relaxed state, said proximal ends of said proximal memory metal strips are configured to move away from each other and away from said pull wire, by moving said proximal hub proximally and away from said distal hub, and wherein said proximal memory metal strips are configured to remove an object adhered to a wall of an interior lumen of an animal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification