METHODS AND APPARATUS FOR TREATING SMALL VESSEL THROMBOEMBOLISMS
4 Assignments
0 Petitions
Accused Products
Abstract
A device and method for intravascular treatment of an embolism, and particularly an embolism within a small vessel, is disclosed herein. One aspect of the present technology, for example, is directed toward a clot treatment device that includes a support member configured to extend through a delivery catheter and a plurality of clot engagement members positioned about the circumference of a distal portion of the support member. The individual clot engagement members can have a first portion and a second portion extending from the first portion, and the first portions can have a proximal region attached to the support member. In the deployed state, the individual second portions can extend from the distal region of one of the first portions and project radially outwardly relative to the support member in a curve that has a proximally extending section which defines a proximally facing concave portion.
119 Citations
31 Claims
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1-20. -20. (canceled)
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21. A method of treating a cerebral or coronary embolism within a small vessel that at least partially restricts blood flow through the small vessel, the method comprising:
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delivering an embolectomy device to a treatment site within the small vessel without the use of a guidewire; deploying the embolectomy device within the embolism, wherein The embolectomy device includes a first plurality of clot engagement members configured to deploy at a first location along the device and a second plurality of clot engagement members configured to deploy at a second location along the device proximal of the first location, and the embolectomy device is deployed by withdrawing a delivery catheter such that a terminus of at least one of a the clot engagement members of the first and/or second pluralities of clot engagement members penetrates through the clot material along an arcuate path that extends radially outward, then proximally with respect to the elongated shaft, and then curves radially inwardly, whereby the clot material is held by at least one of the clot engagement members of the first and/or second pluralities of clot engagement members; at least one of the first plurality of clot engagement members penetrates through the clot material at the first location and, upon further withdrawal of the delivery catheter, at least one of the second plurality of clot engagement members penetrates through the clot material at the second location; moving the embolectomy device and at least a portion of the embolism along the small vessel; and withdrawing the embolectomy device and at least a portion of the embolism from the small vessel. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification