Implantable nerve stimulator

Abstract

The invention discloses an implantable nerve stimulator, and belongs to the field of medical care apparatuses. The implantable nerve stimulator comprises a nerve stimulator body in which a PCB circuitcomponent is arranged, wherein the nerve stimulator body comprises a housing component and an eight-needle feed through flange arranged in the housing component; a contact elastic piece which is electrically connected with the near end of a stimulating electrode is arranged on the eight-needle feed through flange; a needle pin penetrating through the eight-needle feed through flange is connectedto the contact elastic piece, and is connected with the PCB circuit component; a pressing cover for compacting the near end of the stimulating electrode to be propped against the contact elastic pieceis arranged on the eight-needle feed through flange; an annular first liquid resisting sealing piece is compacted between the pressing cover and the eight-needle feed through flange; the near end ofthe stimulating electrode is inserted into the first liquid resisting sealing piece from the outer side; and a second liquid resisting sealing piece which is arranged surrounding the near end of the stimulating electrode and is propped against the eight-needle feed through flange is arranged in the first liquid resisting sealing piece. The implantable nerve stimulator disclosed by the invention and the near end of the stimulating electrode are transplanted together to the human body, the using of an extending wire is omitted, and the operation cost is reduced.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an implantable nerve stimulator. Background technique [0002] The nerve stimulator uses the electric stimulator to generate pulse current and transmits it to the puncture needle. When the puncture needle is close to the mixed nerve, it will cause the mixed nerve to depolarize, and the motor nerve is more likely to be depolarized and the muscles it controls will tremble. It can be located by the muscle trembling response, and it is not necessary to judge by the abnormal sensation caused by the puncture needle touching the nerve. [0003] The Chinese patent document with the notification number CN205307612U discloses a nerve stimulator, including a base plate, a nerve stimulator body is provided on the base plate, and the nerve stimulator body is connected with a first stimulating electrode and a second stimulating electrode. The two stimulating electrodes are respectively connecte...

AI Technical Summary

Problems solved by technology

[0006] 1. The neurostimulators currently on the market are designed to be placed in the body parts below the patient's head. They are generally large in size and far away from the stimulation target. See figure 1 , it is necessary to use the extension wire 01 to connect the stimulator 02 and the stimulation electrode 03. During the exercise, the patient will pull the electrode and the extension wire due to various reasons, causing damage to the electrode and the extension wire;

[0007] 2. Too far from the electrode and the stimulator will cause additional trauma to the patient during the operation

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