System and method for therapeutic neuromuscular electrical stimulation

• US 8,165,685 B1
• Filed: 09/28/2006
• Issued: 04/24/2012
• Est. Priority Date: 09/29/2005
• Status: Active Grant

• Current Assignee: Case Western Reserve University
• Original Assignee: Case Western Reserve University
• Inventors: Knutson, Jayme S., Chae, John
• Primary Examiner(s): Lavert, Nicole F
• Application Number:
  US11/536,495
• Time in Patent Office: 2,035 Days
• Field of Search: 607/2, 607/48
• US Class Current: 607/48
• CPC Class Codes: A61N 1/0452 Specially adapted for transcutaneous muscle stimulation [TMS]
• CPC Class Codes: A61N 1/0456 Specially adapted for transcutaneous electrical nerve stimulation [TENS]
• CPC Class Codes: A61N 1/0484 Garment electrodes worn by the patient
• CPC Class Codes: A61N 1/36003 of motor muscles, e.g. for walking assistance
• CPC Class Codes: A61N 1/36031 using physiological parameters for adjustment
• CPC Class Codes: A61N 1/36034 specified by the stimulation parameters

Abstract

A system for neuromuscular electrical stimulation therapy includes one or more sensors for sensing the position or the muscle contractions of a body part, such as an arm, hand, finger, leg, etc.; a stimulator in communication with the sensor or sensors; and two or more electrodes that can be positioned to activate the paralyzed body part. Based on signals from the one or more sensors, the stimulator can regulate the stimulation provided through the electrodes, including the intensity and duration of the electrical stimulation signal. The sensors can be assembled in a wearable article, such as a glove, sock, or sleeve, to monitor the position or muscle contractions of the healthy body part. The electrodes also may be assembled in a wearable device that allows customized placement of those electrodes.

Claims

1. A method for therapeutic contralaterally controlled functional electrical stimulation, comprising:

sensing an intentional muscle contraction of a first body part through one or more sensors associated with a wearable article;

correlating the intentional muscle contraction of the first body part with a degree of electrical stimulation to be provided to a second homologous contralateral body part to the first body part; and

electrically stimulating the second body part at an intensity directly controlled by and solely a function of the sensed intentional muscle contraction of the first body part.

6. The method of claim 1, comprising signaling a patient to move the first body part to control stimulated movement of the second body part.

7. The method of claim 1, where the first body part is a functional body part that can be intentionally controlled and where the second body part is an at least partially dysfunctional body part.

8. The method of claim 1, comprising:

receiving an electrical signal from the one or more sensors associated with the wearable article worn by the first body part; and

sensing the intentional movement of the first body part as a function of the electrical signal.

2. A method for therapeutic contralaterally controlled functional electrical stimulation, comprising:

detecting a magnitude of an intentional muscle contraction of a muscle associated with a first body part through one or more sensors associated with a wearable article, where the muscle was intentionally contracted by performing a movement of the first body part; and

electrically stimulating a second body part that is homologous and contralateral to the first body part, at an intensity corresponding to and solely determined by the magnitude of the intentional muscle contraction of the muscle associated with the first body part.

3. The method of claim 2, comprising signaling a patient to move the first body part to control stimulated movement of the second body part.

4. The method of claim 2, where the first body part is a functional body part that can be intentionally controlled and where the second body part is an at least partially dysfunctional body part.

5. The method of claim 2, comprising:

establishing a minimum electric current intensity associated with muscle stimulation associated with the first body part being at rest; and

establishing a maximum electrical current intensity associated with muscle stimulation associated with the second body part being at a maximum comfortable muscle stimulation removed from an unstimulated muscle state.