INTERVENTIONAL CATHETER ASSEMBLIES INCORPORATING GUIDE WIRE BRAKE AND MANAGEMENT SYSTEMS
First Claim
1. An interventional catheter assembly comprising:
- an elongated flexible catheter sized and configured to be navigated to an internal interventional site having a guide wire lumen;
a controller communicating with the interventional catheter and having a guide wire port for receiving a proximal portion of a guide wire; and
a guide wire clamp positioned a distance from the guide wire port;
wherein the space between the guide wire port and the guide wire clamp provides a guide wire buffer zone that, when the guide wire is in a clamped condition, accommodates accumulation of the guide wire in an unsupported condition and in curved profiles, thereby accommodating changes in the length of guide wire exposed in the guide wire buffer zone produced by relative axial displacement of a distal end of the catheter with respect to the clamped guide wire.
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Accused Products
Abstract
Interventional catheter assemblies that operate over a guide wire and incorporate guide wire management systems are disclosed. Specifically, a guide wire buffer zone is provided between a proximal end of the interventional catheter and the guide wire clamp that accommodates variable lengths of exposed guide wire in an unrestrained condition when the guide wire is clamped, allowing the distal end of the operating catheter to be advanced and retracted over the distal end of the guide wire without repositioning and reclamping the proximal end of the guide wire. The configuration of the guide wire buffer zone may be adjusted prior to or during an intervention based on the anticipated range of axial motion of the catheter and operating head relative to the guide wire.
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Citations
16 Claims
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1. An interventional catheter assembly comprising:
- an elongated flexible catheter sized and configured to be navigated to an internal interventional site having a guide wire lumen;
a controller communicating with the interventional catheter and having a guide wire port for receiving a proximal portion of a guide wire; and
a guide wire clamp positioned a distance from the guide wire port;
wherein the space between the guide wire port and the guide wire clamp provides a guide wire buffer zone that, when the guide wire is in a clamped condition, accommodates accumulation of the guide wire in an unsupported condition and in curved profiles, thereby accommodating changes in the length of guide wire exposed in the guide wire buffer zone produced by relative axial displacement of a distal end of the catheter with respect to the clamped guide wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- an elongated flexible catheter sized and configured to be navigated to an internal interventional site having a guide wire lumen;
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16. A method for operating an interventional catheter assembly comprising an elongated flexible catheter sized and configured to be navigated to an internal interventional site over a guide wire, a controller component in proximity to a proximal end having a guide wire port for receiving a proximal portion of a guide wire, and a guide wire clamp positioned proximally of the guide wire port, the method comprising navigating a guide wire to a target intervention site in an internal lumen or cavity;
- advancing the interventional catheter over the guide wire and positioning the interventional catheter in proximity to the target intervention site and proximally of a distal end of the guide wire;
clamping the guide wire brake;
advancing the distal end of the interventional catheter over the guide wire toward the distal end of the guide wire; and
accumulating guide wire exposed between the guide wire port and the guide wire clamp as the distal end of the interventional catheter is advanced in an unsupported and unconstrained condition.
- advancing the interventional catheter over the guide wire and positioning the interventional catheter in proximity to the target intervention site and proximally of a distal end of the guide wire;
Specification