Implantable tibial nerve stimulation system

Abstract

The invention relates to an implantable tibial nerve stimulation system, and belongs to the technical field of medical instruments. The system comprises an implanted stimulator, an emitter, a controller and a program controller; the implanted stimulator is arranged in the ankle close to the tibial nerve, and the emitter is correspondingly arranged outside the ankle; the program controller is connected with the emitter through the controller; and wireless power supply devices are arranged in the emitter and the implanted stimulator. The implanted stimulator obtains a power source in a wireless power supply mode, the size of an implanted part is reduced, and risks related to a battery are avoided; the implanted stimulator is cuboid-shaped and is provided with a fixing hole, so that the implanted stimulator is convenient to fix and is not easy to shift; the head-on area of the receiving coil in the implanted stimulator and the emitter is large, so that the efficiency of wireless power supply is improved; and the stimulation contacts on the surface of the implanted stimulator are arranged to be in a plane shape, and the stimulation efficiency is high.

Description

technical field [0001] The invention relates to an implanted tibial nerve stimulation system, which belongs to the technical field of medical devices. Background technique [0002] Overactive bladder (OAB) is a bladder disorder characterized by an urgent and sudden urge to urinate. Typical symptoms include urinary frequency, urgency, bladder spasms, and urine leakage. Possible causes of OAB include neurologic disorders, diabetes mellitus, acute urinary tract infection, and bladder masses (eg, tumors or bladder stones). OAB can significantly impact quality of life (eg, causing sleep disruption and social isolation) and is often associated with depression and anxiety. At present, the main methods for the treatment of OAB are behavioral training and drug therapy, but studies have shown that as many as 80% of OAB patients cannot adhere to the behavioral and drug therapy in the first year of treatment. According to the current research, stimulating some nerves (such as sacral ...

AI Technical Summary

Problems solved by technology

The disadvantages of this kind of system are as follows: 1. The implanted part has a large volume, and the incision and the space required for implantation are relatively large

2. The implanted part contains a battery, which may rupture and leak, and may need to be re-implanted after the battery is exhausted

3. Since the implanted part contains a complete working system, once a failure occurs, it is difficult to stop the system work

Causes continued uncontrolled stimulation of the nerve, causing harm to the patient

4. Since the electrode wire is thin, in order to ensure that the electrode reaches the designated position at any angle and can effectively stimulate when rotating, the contacts are all in the shape of a ring, and this shape will make the current appear radiant, wasting electric energy in the muscles or Fat and other non-nervous parts

But this kind of design has the following problems: 1. Both the glass and the cylindrical shape are easy to cause difficulties in fixing, including sliding up and down and rotating

Once displaced, the stimulation current cannot affect the nerve, making the treatment ineffective

2. The installation method is fixed to the main trunk of the tibial nerve through a silicone buckle, but since the implantation time lasts for several years, the accumulated friction between the stimulator and the nerve may cause neuritis, etc.

3. The corresponding area of ​​the receiving coil inside the cylindrical stimulator is small, which is not conducive to improving the efficiency of wireless power supply

4. The current of the cylindrical electrode diverges to the surroundings, resulting in low efficiency

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