Wire propeller and wire propeller assembly

Abstract

The invention provides a wire propeller assembly, and belongs to the technical field of medical instruments. The wire propeller assembly comprises: a propeller body which is internally provided with a propelling cavity used for limiting the radial direction of a wire, wherein the wire is suitable for sliding movement in the propelling cavity in the axial direction; and a sliding block connected with the propeller body in a matched mode, wherein the sliding block is suitable for sliding on the propeller body in the direction parallel to the axis of the propelling cavity, and the sliding block is provided with a connecting structure used for clamping and fixing the wire. According to the wire propeller, the wire is limited in the radial direction through the propelling cavity of the propeller body, only part of the head of the wire is reserved and used for being integrally inserted into a top cover of a pulse generator, then the wire is propelled towards the pulse generator through the sliding block, and the lead is radially limited in the propelling cavity to make the wire not bent in the propelling process, so the convenience and reliability of propelling the wire into the pulse generator are improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a wire pusher and a wire pusher assembly. Background technique [0002] With the development of neuromodulation technology, neurostimulator technology represented by deep brain stimulator, vagus nerve stimulator, spinal cord stimulator and sacral nerve stimulator has been continuously applied and promoted. Correspondingly, the manufacturability requirements of the electrode products involved in the stimulator system are also continuously increasing. Since electrodes with less stiffness are beneficial to the patient's activities, can reduce the discomfort of the patient's electrode implantation site and increase the service life of the electrode, so making the electrode less rigid and more fatigue-resistant is the current and future trend. [0003] As the electrodes become softer and softer, the operation of inserting the electrodes into the top cover of the implantable p...

AI Technical Summary

Problems solved by technology

Among them, the position of the electrode pinched by the doctor, the magnitude of the electrode clamping force, the magnitude of the electrode propulsion force, the distance of each advancement, and the depth of advancement are all uncertain factors, so the influence of the doctor's hand on the electrode cannot be determined. Different operating methods make doctors experience differently

[0004] For example, during operation, if the position of the electrode is too long from the end face of the IPG top cover, it may cause difficulty in inserting the electrode due to large bending deformation during insertion into the top cover, and even cause permanent deformation of the electrode and affect the function of the pulse generator.

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