Neuro thrombectomy catheter
First Claim
Patent Images
1. A rotational neuro thrombectomy catheter, comprising:
- an elongate flexible tubular body, having a proximal end and a distal end, the tubular body having a distal segment with an outside diameter small enough to access the M1 segment of the middle cerebral artery and sufficiently kink-resistant to enable rotation of a rotatable tip therein;
a rotatable element extending through the body;
a rotatable tip at the distal end of the body and connected to the rotatable element;
a control on the proximal end of the body;
at least one radially inwardly extending stationary cutting member on the tubular body; and
at least one radially outwardly extending flange on the rotatable tip for cooperating with the stationary cutting member to cut material drawn into the tubular body.
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Accused Products
Abstract
An elongate tubular body extends between a rotatable cutter and a control. The cutter is connected to the control with a rotatable element. A vacuum is applied through an annular passage defined between the tubular body and the rotatable element. The tubular body has a sufficiently small outside diameter and sufficient kink resistance and pushability to navigate through the internal carotid artery and at least into the M3 segment of the middle cerebral artery.
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Citations
83 Claims
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1. A rotational neuro thrombectomy catheter, comprising:
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an elongate flexible tubular body, having a proximal end and a distal end, the tubular body having a distal segment with an outside diameter small enough to access the M1 segment of the middle cerebral artery and sufficiently kink-resistant to enable rotation of a rotatable tip therein;
a rotatable element extending through the body;
a rotatable tip at the distal end of the body and connected to the rotatable element;
a control on the proximal end of the body;
at least one radially inwardly extending stationary cutting member on the tubular body; and
at least one radially outwardly extending flange on the rotatable tip for cooperating with the stationary cutting member to cut material drawn into the tubular body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of removing material from the middle cerebral artery, comprising the steps of:
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providing an elongate, flexible, tubular body, having a proximal end and a distal end, a rotatable tip at the distal end of the tubular body, and at least one stationary cutting member on the tubular body which cooperates with at least one flange on the rotatable tip;
advancing the distal end of the tubular body transluminally through the internal carotid artery at least as distal as the M1 segment of the middle cerebral artery;
rotating the rotatable tip; and
drawing portions of material from the middle cerebral artery proximally past the rotatable tip so that the material is cut by the action of the flange rotating past the stationary member. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of removing material from a patient, comprising:
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providing an elongate flexible tubular body, having a proximal end, a distal end, and at least two radially inwardly extending stationary cutting members near the distal end, a rotatable distal tip carried by the distal end of the tubular body, the tip having at least two radially outwardly extending flanges, and a control on the proximal end of the tubular body, the tubular body having a diameter of no more than about 1.3 mm over a distal portion of the catheter having a length of at least about 25 cm;
advancing the distal tip of the tubular body into the vasculature of the brain to the material to be removed;
manipulating the control to activate a vacuum through the tubular body;
commencing rotation of the rotatable tip to remove material from the patient; and
shearing the material between the flanges and the stationary cutting members.
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30. A rotational neuro thrombectomy catheter, comprising:
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an elongate flexible tubular body, having a proximal end and a distal end, the tubular body having a distal segment with an outside diameter small enough to access the M1 segment of the middle cerebral artery and sufficiently kink-resistant to enable rotation of a rotatable tip therein;
a rotatable element extending through the body;
a rotatable tip at the distal end of the body and connected to the rotatable element;
a control on the proximal end of the body;
at least one radially inwardly extending stationary cutting member on the tubular body; and
two radially outwardly extending flanges on the rotatable tip for cooperating with the stationary cutting member to cut material drawn into the tubular body. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A rotational neuro thrombectomy catheter, comprising:
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an elongate flexible tubular body, having a proximal end and a distal end, the tubular body having a distal segment with an outside diameter small enough to access the M1 segment of the middle cerebral artery and sufficiently kink-resistant to enable rotation of a rotatable tip therein;
a rotatable element extending through the body;
a rotatable tip at the distal end of the body and connected to the rotatable element;
a control on the proximal end of the body;
two radially inwardly extending stationary cutting members on the tubular body; and
at least one radially outwardly extending flange on the rotatable tip for cooperating with the stationary cutting member to cut material drawn into the tubular body. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. A rotational neuro thrombectomy catheter, comprising:
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an elongate flexible tubular body, having a proximal end and a distal end, the tubular body having a distal segment with an outside diameter small enough to access the M1 segment of the middle cerebral artery and sufficiently kink-resistant to enable rotation of a rotatable tip therein;
a rotatable element extending through the body;
a rotatable tip at the distal end of the body and connected to the rotatable element;
a control on the proximal end of the body;
at least one radially inwardly extending stationary cutting member on the tubular body;
at least one radially outwardly extending flange on the rotatable tip for cooperating with the stationary cutting member to cut material drawn into the tubular body; and
an annular recess in the tubular body for rotatably receiving the radially outwardly extending flange. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83)
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Specification