INTERVENTIONAL CATHETER FOR RETROGRADE USE HAVING EMBOLIC PROTECTION CAPABILITY AND METHODS OF USE
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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
45 Claims
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1-25. -25. (canceled)
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26. An interventional catheter for use in a vessel, comprising:
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an elongated shaft having an exterior surface, a proximal end, and a distal end; and an amphora-shaped filter coupled to the exterior surface of the elongated shaft, the filter comprising a plurality of expanding struts supporting a filter mesh, the struts configured to transition between a contracted position, wherein a concave portion of the struts contacts the exterior surface of the elongated shaft, and an expanded position, wherein the filter mesh is deployed to capture emboli, the filter defining a reservoir between the concave portions and a proximal portion of the struts when the plurality of struts is in the contracted position. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A method of capturing emboli in a vessel, comprising:
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advancing an interventional catheter into a vessel having a lesion such that the catheter is positioned adjacent to the lesion, the interventional catheter having a sheath, an elongated shaft slidably disposed within the sheath, and an amphora-shaped filter coupled to the elongated shaft; retracting the sheath to a position proximal to the filter such that a plurality of struts supporting a filter mesh on the filter expand to capture emboli from the lesion; and moving the sheath to a position distal to the filter such that a concave portion of the struts contacts the elongated shaft to define a reservoir between the concave portions and a proximal portion of the struts. - View Dependent Claims (42, 43, 44, 45)
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Specification