Treatment of indications using electrical stimulation

Abstract

In one embodiment, a method includes implanting an implant entirely under the subject's skin. The implant includes a passive electrical conductor of sufficient length to extend from subcutaneous tissue located below one of a surface cathodic electrode and a surface anodic electrode to the tibial nerve. The surface electrodes are positioned in spaced relationship on the subject's skin, with one of the electrodes positioned over the pick-up end of the electrical conductor such that the portion of the current is transmitted through the conductor to the tibial nerve, and such that the current flows through the tibial nerve and returns to the other of the surface cathodic electrode and the surface anodic electrode. An electrical current is applied between the surface cathodic electrode and the surface anodic electrode to cause the portion of the electrical current to flow through the implant to stimulate the tibial nerve.

Description

BACKGROUND[0001]The invention relates generally to medical devices and more particularly to devices and methods for use in electrical stimulation treatment.[0002]Nerve cells consist of an axon for transmitting action potentials or neural impulses, and dendrites for receiving such impulses. Normally, nerves transmit action potentials from the impulse-sending axon of one nerve cell to the impulse-receiving dendrites of an adjacent nerve cell. At synapses, the axon secretes neurotransmitters to trigger the receptors on the next nerve cell's dendrites to initiate a new electrical current.[0003]In some pathological states, transmission of action potentials is impaired, thus, activation of neural impulses is required to restore normal functioning. Electrically-excitable bodily tissues, such as nerves and muscles, may be activated by an electrical field applied between electrodes applied externally to the skin. Electric current flows through the skin between a cathodic electrode and an ano...

AI Technical Summary

Benefits of technology

[0008]Systems and methods of treating a targeted body tissue (e.g., bone, soft tissue, muscle, ligaments, etc.) by stimulating the body tissue with an electric current are described herein. In one embodiment, a method includes implanting an implant entirely under the subject's skin. The implant includes a passive electrical conductor of sufficient length to extend from subcutaneous tissue located below either a surface cathodic electrode(s) or a surface anodic electrode(s) to the tibial nerve. The surface electrodes are positioned in spaced relationship on the subject's skin, with one of the electrodes positioned over the pick-up end of the electrical conductor such that the portion of the current is transmitted through the cond

Problems solved by technology

In other pathological states, action potentials are transmitted which do not serve a useful purpose; hence, blocking of unnecessary neural impulses is required to restore normal functioning.

However, all neural prostheses intended for long-term use require the implantation of a stimulator that contains electronic components and often a battery.

A disadvantage of stimulation through electrodes attached to the body surface is that many non-targeted tissues may be co-activated along with the targeted tissues.

This lack of selectivity often causes unwanted sensations and / or unwanted movements.

Furthermore, tissues that lie deep within the body can be difficult or impossible to stimulate adequately, because most of the electrical current flowing between the electrodes flows through tissues closer to the electrodes than the targeted tissues.

Implanted stimulators are expensive and often require a controller and / or power source external to the body.

This has generally limited the use of percutaneous electrodes to short-term applications.

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