Slidable vascular filter
First Claim
1. A medical device comprising:
- a mandrel defining a distal end;
a stop fixed relative to the mandrel and spaced proximally of the distal end of the mandrel; and
a filter element comprising a proximal coupling slidably coupled to the mandrel proximal of the stop and a distal coupling slidably coupled to the mandrel distal of the stop,wherein at least a portion of the mandrel is configured to be disengaged from the filter element,wherein the stop restricts translation of the filter element along the mandrel, andwherein translation of the filter element is restricted on the mandrel proximally by the distal coupling abutting against the stop, and distally by the proximal coupling abutting against the stop.
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Accused Products
Abstract
A collapsible medical device for use, e.g., as a vascular filter. The device includes a mandrel having a distal end and a stop spaced proximally of the distal end. A proximal length of the mandrel extends proximally of the stop and a distal length of the mandrel extends distally of the stop. A functional element (e.g., a vascular filter) has a radially expandable body and includes a proximal slider and a distal slider. The proximal and distal sliders are slidable along the mandrel independently of one another such that the distance between the proximal slider and distal slider can be varied to effect different configurations of the functional element. In one method of using such a device, the functional element is urged distally to a treatment site by urging the mandrel distally. This causes the stop to exert a distal biasing force on the distal slider, which acts against a restorative force of the functional element to axially elongate the functional element and reduce friction between the functional element and a wall of the vessel.
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Citations
21 Claims
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1. A medical device comprising:
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a mandrel defining a distal end; a stop fixed relative to the mandrel and spaced proximally of the distal end of the mandrel; and a filter element comprising a proximal coupling slidably coupled to the mandrel proximal of the stop and a distal coupling slidably coupled to the mandrel distal of the stop, wherein at least a portion of the mandrel is configured to be disengaged from the filter element, wherein the stop restricts translation of the filter element along the mandrel, and wherein translation of the filter element is restricted on the mandrel proximally by the distal coupling abutting against the stop, and distally by the proximal coupling abutting against the stop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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positioning a filter element of a medical device in a channel of body of a patient, the medical device comprising; a mandrel defining a distal end; a stop fixed relative to the mandrel and spaced proximally of the distal end of the mandrel; and the filter element comprising a proximal coupling slidably coupled to the mandrel proximal of the stop and a distal coupling slidably coupled to the mandrel distal of the stop, wherein at least a portion of the mandrel is configured to be disengaged from the filter element, wherein the stop restricts translation of the filter element along the mandrel, and wherein translation of the filter element is restricted on the mandrel proximally by the distal coupling abutting against the stop, and distally by the proximal coupling abutting against the stop; and withdrawing the at least the portion of the mandrel from the patient, wherein withdrawing the at least the portion of the mandrel comprises disengaging the at least the portion of the mandrel from the filter element. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification