Interventional catheter for retrograde use having embolic protection capability and methods of use
First Claim
1. An interventional catheter for use in a vessel, comprising:
- an inner member having an exterior surface and a reduced diameter region;
a filter disposed on the inner member at the reduced diameter region, the filter comprising a plurality of longitudinally extending struts and an annular distal circumferential ring; and
a sheath slidably disposed on the inner member, the sheath movable from an extended position, wherein a distal end of the sheath retains the filter in a collapsed configuration, to a retracted position, wherein the filter is in a deployed configuration and the distal end of the sheath is located proximal to the filter, andwherein the filter is configured so that the annular distal circumferential ring contacts the exterior surface of the inner member before the longitudinally extending struts.
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Accused Products
Abstract
Interventional catheters are disclosed for use in performing diagnostic and therapeutic procedures in vessels that are accessed retrograde to blood flow. The catheters include an elongated shaft slidably disposed within a sheath, a distal region having an end effector and a filter disposed proximal to the end effector to capture emboli liberated during the diagnostic or therapeutic procedure. The filter includes a plurality of struts that cooperate with an exterior surface of the catheter to define a reservoir to retain captured emboli, the reservoir configured so that advancement of the sheath contracts the filter without squeezing or dislodging captured emboli beyond a distal end of the filter.
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Citations
20 Claims
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1. An interventional catheter for use in a vessel, comprising:
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an inner member having an exterior surface and a reduced diameter region; a filter disposed on the inner member at the reduced diameter region, the filter comprising a plurality of longitudinally extending struts and an annular distal circumferential ring; and a sheath slidably disposed on the inner member, the sheath movable from an extended position, wherein a distal end of the sheath retains the filter in a collapsed configuration, to a retracted position, wherein the filter is in a deployed configuration and the distal end of the sheath is located proximal to the filter, and wherein the filter is configured so that the annular distal circumferential ring contacts the exterior surface of the inner member before the longitudinally extending struts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification