Guide wire activation mechanism and proximal actuation mechanism

Inventors

Friedman, Aharon • Gedulter, Matan • Miller, Moshe • Eckhouse, Ronen

Assignees

Rapid Medical Ltd

Abstract

An intraluminal guide wire may include an elongated shaft extending between a distal and a proximal end. The guide wire may include a user actuation segment positioned proximal to the proximal end of the shaft and configured for movement relative to the shaft. The guide wire may include a core wire affixed to the user actuation segment and the distal end of the shaft. The guide wire may also include an inner member having a proximal end situated at least partially within and fixed relative to the user actuation segment and a distal end situated partially within the shaft, the core wire passing through the inner member. The guide wire may be configured with a distal segment of the inner member within the shaft exhibiting a friction-based restraint on movement within the shaft. The friction-based restraint on movement may be a frictional force between the inner member and the shaft.

Core Innovation

The disclosed invention relates to an intraluminal guide wire that includes a hollow elongated shaft having a proximal end and a distal end. A user actuation segment is situated proximally to the proximal end of the hollow elongated shaft and is configured to move relative to the hollow elongated shaft.

A core wire extends between the user actuation segment and the distal end of the hollow elongated shaft. The invention further provides an inner member having a proximal end fixed relative to the user actuation segment and a distal end configured for placement within, and axial movement relative to, the hollow elongated shaft, and the core wire passes through the inner member.

A locking segment of the inner member is configured for placement within the hollow elongated shaft and is configured to exhibit a friction-based restraint on movement within the hollow elongated shaft, where the restraint is produced by a frictional force between an outer surface of the inner member and an inner surface of the hollow elongated shaft. The locking segment includes at least one bend such that, when the locking segment is inserted within the hollow elongated shaft, the at least one bend is configured to exert the frictional force upon the inner surface of the hollow elongated shaft, and the outer diameter of the inner member at the at least one bend is smaller than the diameter of the inner surface of the hollow elongated shaft.

Claims Coverage

The independent claim provides an intraluminal guide wire architecture combining a movable user actuation segment, a core wire passing through a fixed inner member, and an inner-member locking segment that creates a friction-based restraint within a hollow elongated shaft through a bent friction geometry with a specified outer diameter relationship. Dependent claims further refine the locking segment geometry and material/dimensional relationships, while additional dependent claims add further frictional restraint elements involving bends and user-actuation-driven deflectable-segment behavior.

Across the provided claim coverage, the core inventive concept is an inner-member locking segment inside a hollow elongated shaft that produces a frictional restraint through at least one bend acting against the hollow shaft inner surface, with an explicitly smaller outer diameter at the bend relative to the inner surface diameter, integrated with a movable proximal user actuation segment and a core wire passing through a fixed inner member.

Stated Advantages

Documented Applications