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US 8,939,931 B2Granted
Intravascular access catheter
AssigneeOnset Medical Corporation
InventorGerard von Hoffmann
Life of this patent
Estimating the term…
Abstract
Disclosed is an access catheter, having a distal segment which is moveable 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.
Claims19
An access catheter having an enlargeable internal working lumen, comprising:
- an elongate, flexible tubular body, having a proximal end, a distal end, and a working lumen extending therethrough;
- a proximal section on the body, having a fixed diameter;
- a distal section on the body which is movable between a first, reduced outside diameter less than the fixed diameter for transluminal navigation and a second, enlarged outside diameter to accommodate an enlarged internal working lumen;
- an axially movable tubular support for controllably supporting the working lumen against collapse when the working lumen is enlarged and the distal section is in the second diameter;
- and
- a control on the proximal end of the catheter for controlling the support;
- wherein the working lumen in the distal section is enlargeable from a first inside diameter to a second inside diameter in response to distal movement of the support;
- and wherein the support is movable from a first proximal limit within the catheter when the working lumen within the distal section is in the first inside diameter configuration to a second, distal position within the catheter to support the enlarged internal working lumen in the distal section.
5 more elements
An access catheter having an enlargeable internal working lumen, comprising:
- an elongate, flexible tubular body, having a proximal end, a distal end, and a working lumen extending therethrough;
- a proximal section on the body, having a fixed diameter;
- a distal section on the body which is movable between a first, reduced outside diameter less than the fixed diameter and a second, enlarged outside diameter;
- an axially movable tubular support for controllably supporting the working lumen against collapse when the working lumen is enlarged and the distal section is in the second diameter;
- and
- a control on the proximal end of the catheter for controlling the support;
- wherein the working lumen in the distal section is enlargeable from a first inside diameter to a second inside diameter in response to distal movement of the support;
- and wherein the support is movable from a first proximal position within the catheter when the working lumen within the distal section is in the first inside diameter configuration to a second, distal position within the catheter to support the enlarged internal working lumen in the distal section.
5 more elements
Dependencies are inferred from the claim text.