Retrieval of material from vessel lumens
First Claim
1. A clot retrieving device, comprising:
- an elongated shaft having a distal region;
a capture structure having a proximal portion coupled to the distal region of the elongated shaft and a distal portion having a distal terminus; and
a cover having a first portion coupled to the distal region of the elongated shaft and a second portion extending from the first portion, the cover having a first configuration in which the second portion of the cover extends proximally from the first portion, and the cover having a second configuration in which the capture structure is at least partially ensheathed within the first portion of the cover and the second portion of the cover extends distally from the first portion, and in the second configuration the second portion has (a) a first region distal to a distal terminus of the capture structure, the first region tapering radially inwardly in a distal direction, and (b) a second region extending distally and radially outwardly from the first region.
1 Assignment
0 Petitions
Accused Products
Abstract
Devices for removing clot material from a blood vessel lumen and associated systems and methods are disclosed herein. A clot retrieving device may include, for example, an elongated shaft, a capture structure having a proximal portion and a distal portion, and a cover having a first portion coupled to the elongated shaft and a second portion extending from the first portion. The cover may have an inverted configuration in which the capture structure is at least partially ensheathed within the first portion of the cover and the second portion of the cover extends distally from the first portion. In the inverted configuration, the second portion may have (a) a first region distal to a distal terminus of the capture structure, the first region tapering radially inwardly in a distal direction, and (b) a second region extending distally and radially outwardly from the first region.
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Citations
25 Claims
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1. A clot retrieving device, comprising:
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an elongated shaft having a distal region; a capture structure having a proximal portion coupled to the distal region of the elongated shaft and a distal portion having a distal terminus; and a cover having a first portion coupled to the distal region of the elongated shaft and a second portion extending from the first portion, the cover having a first configuration in which the second portion of the cover extends proximally from the first portion, and the cover having a second configuration in which the capture structure is at least partially ensheathed within the first portion of the cover and the second portion of the cover extends distally from the first portion, and in the second configuration the second portion has (a) a first region distal to a distal terminus of the capture structure, the first region tapering radially inwardly in a distal direction, and (b) a second region extending distally and radially outwardly from the first region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A clot retrieving device, comprising:
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an elongated shaft having a distal region; a capture structure having a proximal portion coupled to the distal region of the elongated shaft and a distal portion having a distal terminus; and a cover coupled to the distal region of the elongated shaft, the cover having a first portion and a second portion extending from the first portion, wherein the cover has (a) a first configuration in which the second portion of the cover extends proximally from the first portion, and (b) a second configuration in which the capture structure is at least partially ensheathed within the first portion of the cover and the second portion extends distally from the first portion, and wherein, in the second configuration, the second portion has; a neck portion distal to the capture structure, the neck portion having a cross-sectional area that decreases then increases in a distal direction, a broad portion that curves radially outwardly and proximally from a distal region of the neck portion, and a channel extending through the neck portion that terminates at an opening at a distal face of the cover. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for using a clot retrieval device to retrieve clot material from a blood vessel of a patient, the clot retrieval device including a capture structure and a cover having a first portion and a second portion, the method comprising:
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expanding the clot retrieval device within the blood vessel lumen into a first configuration such that the second portion of the cover extends proximally from the first portion of the cover and the second portion of the cover contacts an interior surface of the vessel wall; moving the capture structure proximally relative to the cover to transform the clot retrieval device from the first configuration into a second configuration in which (a) the first portion of the cover surrounds the capture structure, and (b) the second portion extends distally from the first portion, the second portion tapering radially inward distal to a distal terminus of the capture structure to a narrow region, and then curves radially outwardly from the narrow region to form a wide region; and retaining at least a portion of the clot material within the cover and removing the clot material and clot retrieval device from the patient with the clot retrieval device in the second configuration. - View Dependent Claims (22, 23, 24, 25)
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Specification