Angioplasty device and method of making same
First Claim
1. An apparatus for insertion into a vessel-like structure, the apparatus comprising:
- a catheter for insertion into the vessel-like structure, the catheter having a catheter wall and a lumen extending longitudinally therethrough;
a moveable member disposed within the lumen;
at least one helically twisted flexible strut fixedly connected to the catheter wall and to the moveable member; and
a membrane operably connected to the at least one flexible strut to form a trap, wherein relative motion between the catheter wall and the moveable member actuates the trap between a helically twisted contracted position and a helically twisted expanded position, and further wherein the at least one strut forms a profile having a first portion and a second portion, wherein the first portion has a first radius of curvature and the second portion has a second radius of curvature, the first radius of curvature is larger than the second radius of curvature causing the first portion to contract first to form a cocoon.
2 Assignments
0 Petitions
Accused Products
Abstract
An angioplasty device and particle trap for use in removal of a particle from a small diameter vessel or vessel-like structure is disclosed. One embodiment includes a catheter for insertion into a vessel-like structure, the catheter having a catheter wall and a movable member, a trap operably connected to the catheter wall and to the movable member, wherein relative motion between the catheter wall and the movable member actuates the trap. In one embodiment, the expanded trap is formed from struts in a spiral-shaped configuration. In one embodiment, the contracted trap forms a waist to creates a pinch-point to trap particles. In one embodiment, the contracted trap forms a cocoon-like structure to further trap particles. In one embodiment, the angioplasty device includes a handle to actuate the trap from a contracted position to an expanded position and return to a contracted position. The handle provides rotational or longitudinal or both types of movement to actuate the trap.
16 Citations
18 Claims
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1. An apparatus for insertion into a vessel-like structure, the apparatus comprising:
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a catheter for insertion into the vessel-like structure, the catheter having a catheter wall and a lumen extending longitudinally therethrough; a moveable member disposed within the lumen; at least one helically twisted flexible strut fixedly connected to the catheter wall and to the moveable member; and a membrane operably connected to the at least one flexible strut to form a trap, wherein relative motion between the catheter wall and the moveable member actuates the trap between a helically twisted contracted position and a helically twisted expanded position, and further wherein the at least one strut forms a profile having a first portion and a second portion, wherein the first portion has a first radius of curvature and the second portion has a second radius of curvature, the first radius of curvature is larger than the second radius of curvature causing the first portion to contract first to form a cocoon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification