Wire and lock mechanism
First Claim
Patent Images
1. An assembly, comprising:
- an outer shaft having a proximal portion, a distal portion, and a longitudinally collapsible portion disposed between the proximal and distal portions, the outer shaft defining an outer shaft lumen, the longitudinally collapsible portion moveable between an extended configuration and a collapsed configuration;
a guidewire disposed within the outer shaft lumen, the guidewire including a filter fixed to the guidewire; and
guidewire gripping means positioned within the outer shaft lumen and fixedly attached to the outer shaft, the guidewire gripping means reversibly moveable between a relaxed configuration in which the guidewire may move freely in a longitudinal direction and a constricted configuration in which the guidewire is constrained from movement in a longitudinal direction;
wherein the guidewire extends through the guidewire gripping means.
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Abstract
Methods and devices for delivering and/or retrieving a filter fixed to a guidewire disposed within a blood vessel are disclosed. A system in accordance with the present invention comprises, an outer shaft having a proximal end, distal end and a wall defining an outer shaft lumen. The system also includes a stop mechanism disposed within the outer shaft lumen. The stop mechanism is preferably configured such that relative axial movement between the guidewire and the outer shaft may be selectively precluded.
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Citations
13 Claims
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1. An assembly, comprising:
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an outer shaft having a proximal portion, a distal portion, and a longitudinally collapsible portion disposed between the proximal and distal portions, the outer shaft defining an outer shaft lumen, the longitudinally collapsible portion moveable between an extended configuration and a collapsed configuration; a guidewire disposed within the outer shaft lumen, the guidewire including a filter fixed to the guidewire; and guidewire gripping means positioned within the outer shaft lumen and fixedly attached to the outer shaft, the guidewire gripping means reversibly moveable between a relaxed configuration in which the guidewire may move freely in a longitudinal direction and a constricted configuration in which the guidewire is constrained from movement in a longitudinal direction; wherein the guidewire extends through the guidewire gripping means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An assembly, comprising:
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an outer shaft defining an outer shaft lumen; an inner shaft defining an inner shaft lumen, the inner shaft disposed within the outer shaft lumen; a guidewire disposed within the inner shaft lumen, the guidewire including a filter fixed to the guidewire; and guidewire gripping means positioned within the outer shaft lumen and fixedly attached to the outer shaft, the guidewire gripping means reversibly moveable between a relaxed configuration in which the guidewire may move freely in a longitudinal direction and a constricted configuration in which the guidewire is constrained from movement in all longitudinal directions. - View Dependent Claims (13)
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Specification