Helical thrombus removal device
First Claim
1. A device for removing a thrombus from a body cavity, the device comprising:
- a flexible wire having a proximal end and a distal end;
an elongated shaft having a proximal portion and a distal portion, the proximal portion attached to the distal end of the flexible wire and distally extending therefrom to the distal portion; and
an expandable member formed helically about the elongated shaft, the expandable member being configured to helically close defining a collapsed state for delivery and retrieval of the device, the expandable member being configured to helically open defining an expanded state for removing a thrombus from the body cavity, the expandable member having a plurality of member portions helically opening and extending from the elongated shaft, each of the member portions helically extending proximally at a predetermined angle relative to the elongated shaft and defining a helical proximally faced opening when the member portion is in the expanded state, the expandable member is disposed along a longitudinal axis, the expandable member being helically closed in the collapsed state when the elongated shaft is rotated about the longitudinal axis in a first direction, wherein adjacent member portions overlap each other.
3 Assignments
0 Petitions
Accused Products
Abstract
A device for removing thrombus from a body cavity is disclosed. The device comprises a flexible wire having a proximal end and a distal end. The device further comprises an elongated shaft having a proximal portion and a distal portion. The proximal portion attached to the distal end of the flexible wire and distally extends therefrom to the distal portion. The device further comprises an expandable member formed helically about the elongated shaft. The expandable member is configured to helically close, defining a collapsed state for delivery and retrieval of the device. The expandable member is configured to helically open, defining an expanded state for removing thrombus from the body cavity. The expandable member has at least one member portion helically extending from the elongated shaft at a predetermined angle, defining a proximally faced opening when the member is in the expanded state.
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Citations
20 Claims
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1. A device for removing a thrombus from a body cavity, the device comprising:
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a flexible wire having a proximal end and a distal end; an elongated shaft having a proximal portion and a distal portion, the proximal portion attached to the distal end of the flexible wire and distally extending therefrom to the distal portion; and an expandable member formed helically about the elongated shaft, the expandable member being configured to helically close defining a collapsed state for delivery and retrieval of the device, the expandable member being configured to helically open defining an expanded state for removing a thrombus from the body cavity, the expandable member having a plurality of member portions helically opening and extending from the elongated shaft, each of the member portions helically extending proximally at a predetermined angle relative to the elongated shaft and defining a helical proximally faced opening when the member portion is in the expanded state, the expandable member is disposed along a longitudinal axis, the expandable member being helically closed in the collapsed state when the elongated shaft is rotated about the longitudinal axis in a first direction, wherein adjacent member portions overlap each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A clot removal assembly for removing a thrombus from a body cavity, the assembly comprising:
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an inner catheter having a tubular body portion; an outer catheter having a distal end through which the inner catheter is disposed for deployment in the body vessel; and a clot removal device coaxially disposed within the inner catheter for removal of thrombus in a body cavity, the device comprising; a flexible wire having a proximal end and a distal end; an elongated shaft having a proximal portion and a distal portion, the proximal portion attached to the distal end of the flexible wire and distally extending therefrom; and an expandable member formed helically about the distal portion of the elongated shaft, the expandable member being configured to helically close defining a collapsed state for delivery and retrieval of the device, the expandable member being configured to helically open defining an expanded state for removing a thrombus from the body cavity, the expandable member having a plurality of member portions helically opening and extending from the elongated shaft, each of the member portions helically extending proximally at a predetermined angle relative to the elongated shaft and defining a helical proximally faced opening when the member portion is in the expanded state, the expandable member is disposed along a longitudinal axis, the expandable member being helically closed in the collapsed state when the elongated shaft is rotated about the longitudinal axis in a first direction, wherein adjacent member portions overlap each other. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A device for removing a thrombus from a body cavity, the device comprising:
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a flexible wire having a proximal end and a distal end; an elongated shaft having a proximal portion and a distal portion, the proximal portion attached to the distal end of the flexible wire and distally extending therefrom to the distal portion; and an expandable member formed helically about the elongated shaft, the expandable member being configured to helically close defining a collapsed state for delivery and retrieval of the device, the expandable member being configured to helically open defining an expanded state for removing a thrombus from the body cavity, the expandable member having a plurality of member portions helically opening and extending from the elongated shaft, each of the member portions helically extending proximally at a predetermined angle relative to the elongated shaft and defining a helical proximally faced opening when the member portion is in the expanded state, the expandable member is disposed along a longitudinal axis, the expandable member being helically closed in the collapsed state when the elongated shaft is rotated about the longitudinal axis in a first direction, the opening of each member portion has an outer diameter, the outer diameter increasing distally longitudinally relative to the elongated shaft to define the expandable member having a distally flared profile. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification