Intracranial aspiration catheter
First Claim
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1. An intracranial aspiration catheter, comprising:
- an elongate, flexible tubular body, having a proximal end, a distal end, and an aspiration lumen extending therethrough;
a distally facing opening on the distal end of the aspiration lumen;
a proximal section on the body, having a fixed diameter;
a distal section on the body in which the aspiration lumen including the distally facing opening is movable between a first, reduced inside diameter for transluminal navigation and a second, enlarged inside diameter for aspirating material;
an axially movable support for controllably supporting the aspiration lumen against collapse when in the second diameter; and
a control on the proximal end of the catheter for controlling the support;
wherein the distal section is advanced from the first diameter to the second diameter in response to distal movement of the support; and
wherein the support is in a first proximal position within the catheter when the distal section is in the first inside diameter configuration and a second distal position within the catheter to support the distal section when the distal section is in the second inside diameter configuration.
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Abstract
Disclosed is an access catheter, having a distal segment which is movable from a reduced outside diameter for positioning at a target site, and an enlarged outside diameter to create an enlarged internal working lumen. In one application, the catheter is configured for use as an intracranial aspiration catheter. Methods are also disclosed.
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Citations
26 Claims
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1. An intracranial aspiration catheter, comprising:
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an elongate, flexible tubular body, having a proximal end, a distal end, and an aspiration lumen extending therethrough; a distally facing opening on the distal end of the aspiration lumen; a proximal section on the body, having a fixed diameter; a distal section on the body in which the aspiration lumen including the distally facing opening is movable between a first, reduced inside diameter for transluminal navigation and a second, enlarged inside diameter for aspirating material; an axially movable support for controllably supporting the aspiration lumen against collapse when in the second diameter; and a control on the proximal end of the catheter for controlling the support; wherein the distal section is advanced from the first diameter to the second diameter in response to distal movement of the support; and wherein the support is in a first proximal position within the catheter when the distal section is in the first inside diameter configuration and a second distal position within the catheter to support the distal section when the distal section is in the second inside diameter configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An access catheter, comprising:
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an elongate, flexible tubular body, having a proximal end, a distal end, and an aspiration lumen extending therethrough; a distally facing opening on the distal end of the aspiration lumen; a proximal section on the body, having a fixed diameter; a distal section on the body in which the aspiration lumen including the distally facing opening is movable between a first, reduced inside diameter for transluminal navigation and a second, enlarged inside diameter for aspirating material; an axially movable support for controllably supporting the aspiration lumen against collapse when in the second diameter; and a control on the proximal end of the catheter for controlling the support; wherein the distal section is advanced from the first diameter to the second diameter in response to distal movement of the support; and wherein the support is in a first proximal position within the catheter when the distal section is in the first inside diameter configuration and a second distal position within the catheter to support the distal section when the distal section is in the second inside diameter configuration. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification