GUIDEWIRE STOP
First Claim
1. An actuatable guidewire stop configured to limit movement of an intravascular device relative to a guidewire, comprising:
- a coil spring having an inner lumen with a first diameter configured to slideably and rotationally receive the guidewire in an unlocked configuration, and frictionally engage the guidewire in a locked configuration, wherein in the locked configuration the inner lumen has a second diameter smaller than the first diameter.
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Accused Products
Abstract
A user-actuatable guidewire stop is disclosed which can be used to stop and/or lock a medical device on a guidewire advanced through a body lumen. In one embodiment, the guidewire stop is configured as a coil spring having an inner lumen configured to slideably and rotationally receive the guidewire in an unlocked configuration, and to frictionally engage the guidewire in a locked configuration, wherein in the inside diameter of the coil spring in the locked configuration is smaller than the diameter in the unlocked configuration. A restraining member maintains the coil spring in the unlocked configuration during deployment and is removed at the interventional site causing the coil spring to collapse onto the guidewire. The guidewire stop can be employed with an embolic filter or another intravascular device.
36 Citations
20 Claims
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1. An actuatable guidewire stop configured to limit movement of an intravascular device relative to a guidewire, comprising:
a coil spring having an inner lumen with a first diameter configured to slideably and rotationally receive the guidewire in an unlocked configuration, and frictionally engage the guidewire in a locked configuration, wherein in the locked configuration the inner lumen has a second diameter smaller than the first diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An actuatable guidewire stop configured to limit movement of an intravascular device relative to a guidewire, comprising:
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a tubular member having at least one resilient member formed in a peripheral opening thereof and exerting a radially inward bias force, the tubular member surrounding a section of the guidewire, and a restraining member interposed between the tubular member and the section of the guidewire to maintain the guidewire stop in an unlocked configuration on the section of the guidewire, wherein upon removal of the restraining member from a space between the tubular member and the section of the guidewire, the resilient member frictionally engages the section of the guidewire and locks the guidewire stop to the section of the guidewire. - View Dependent Claims (17)
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18. An intravascular filter device, comprising:
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a filter frame disposed about a guidewire; a filter membrane operatively coupled to the filter frame; and a coil spring attached to the filter frame, said coil spring having an inner lumen with a first diameter configured to slideably and rotationally receive the guidewire in an unlocked configuration, and frictionally engage the guidewire in a locked configuration, wherein in the locked configuration the inner lumen has a second diameter smaller than the first diameter.
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19. A method for locking a guidewire stop onto a guidewire at a desired location along the length of the guidewire, comprising;
advancing the guidewire stop configured as a coil spring having an inner lumen with a first diameter configured to slideably and rotationally receive the guidewire in an unlocked configuration to the desired location; and
removing a restraining member which maintains the coil spring in the unlocked configuration, thereby causing the coil spring to frictionally engage the guidewire in a locked configuration and lock the guidewire stop on the guidewire, wherein in the locked configuration the inner lumen has a second diameter smaller than the first diameter.- View Dependent Claims (20)
Specification