Deep Brain Stimulation Device Having Wireless Power Feeding By Magnetic Induction

• US 20110046693A1
• Filed: 05/14/2008
• Published: 02/24/2011
• Est. Priority Date: 05/14/2007
• Status: Active Grant

• Current Assignee: Gachon University of Medicine # Science Industry-A
• Original Assignee: Gachon University of Medicine # Science Industry-A
• Inventors: Park, Yeon Joon, Lee, Uhn, Choi, Sang Hyouk
• Granted Patent: US 8,412,344 B2
• Time in Patent Office: Days
• US Class Current: 607/45
• CPC Class Codes: A61N 1/0534 Electrodes for deep brain stimulation
• CPC Class Codes: A61N 1/3787 from an external energy source

Abstract

Provided is a deep brain stimulation (DBS) device having power wirelessly fed by a magnetic induction to form a rotating magnetic field using a rotating magnetic field disk installed inside a hat put on a patient and generate induced power using an induction coil plate fixed underneath a scalp of the patient to be combined with the rotating magnetic field, to drive electrodes implanted into a brain of the patient so as to correct abnormal motor and sensory functions of the patient using power wirelessly fed from an outside into a body of the patient. The DBS device includes: a hat module which is installed inside a hat put on a head of the o patient to generate a rotating magnetic field; and an implantation module which is implanted through a skull under a scalp to contact a nervous system of the patient and combined with the rotating magnetic field of the hat module to stimulate the cerebral nerve using induced power generated by the magnetic induction.

Claims

1. A deep brain stimulation (DBS) device having power wirelessly fed by a magnetic induction to stimulate a cerebral nerve of a patient having abnormal motor and sensory functions so as to normalize functions of a brain of the patient, the DBS device comprising:

a hat module which is installed inside a hat put on a head of the patient to generate a rotating magnetic field; and

an implantation module which is implanted through a skull under a scalp to contact a nervous system of the patient and combined with the rotating magnetic field of the hat module to stimulate the cerebral nerve using induced power generated by the magnetic induction.

2. The DBS device of claim 1, wherein the hat module 3 comprises:

a rotating magnetic field disk which generates a magnetic field toward the Implantation module 4 to generate power required for driving the implantation module;

a small-sized electric motor which rotates the rotating magnetic field disk to rotate the magnetic field; and

a controller which controls the small-sized electric motor 32.

3. The DBS device of claim 2, wherein a plurality of small-sized magnets are attached on a surface of the rotating magnetic field disk to be disposed at equal intervals along a circumference of the rotating magnetic field disk.

4. The DBS device of claim 1, wherein the implantation module comprises:

a stimulation pin which is implanted through the skull under the scalp to contact a deep cerebral nerve so as to provide an electric stimulation to the nervous system of the patient;

an induction coil plate which is combined with the magnetic field generated by the hat module to generate the induced power; and

a power modulator which modulates the induced power generated by the induction coil plate into power for driving the stimulation pin.

5. The DBS device of claim 4, wherein the induction coil plate comprises:

the power modulator which is attached to a center of the induction coil plate; and

a minute induction coil which is formed of a metal line in a predetermined pattern around the power modulator.

6. The DBS device of claim 4, wherein:

the hat module further comprises a controller and a transmitter which is controlled by the controller to transmit a nerve stimulation command signal; and

the implantation module further comprises a receiver which receives the nerve stimulation command signal from the transmitter and transmits the nerve stimulation command signal to the power modulator.