Muscle energy converter with smooth continuous tissue interface

• US 7,715,918 B2
• Filed: 10/18/2006
• Issued: 05/11/2010
• Est. Priority Date: 10/18/2005
• Status: Active Grant

• Current Assignee: University of Cincinnati
• Original Assignee: University of Cincinnati
• Inventors: Melvin, David Boyd
• Primary Examiner(s): Layno; Carl H
• Assistant Examiner(s): EL-KAISSI, HIBA CARINE
• Application Number:
  US11/550,653
• Publication Number:
  US 20070088402A1
• Time in Patent Office: 1,301 Days
• Field of Search: 607 33- 35, 607/61
• US Class Current: 607/35
• CPC Class Codes: A61N 1/3785 generated by biological activity or substance, e.g. body movement
• CPC Class Codes: H02K 35/02 with moving magnets and stationary coil systems
• CPC Class Codes: H02K 7/1823 structurally associated with turbines or similar engines
• CPC Class Codes: H02K 7/1853 driven by intermittent forces
• CPC Class Codes: H02K 7/1876 with reciprocating, linearly oscillating or vibrating parts

Abstract

A device and corresponding method for converting the contractile work of skeletal muscles into transportable energy. The device may comprise a converter having a mobile end adapted to be connected to a skeletal muscle, a relatively stationary end opposite the mobile end; one or more energy processing units operatively connected to the mobile and stationary ends of the converter, with each energy processing unit adapted to convert tensile forces generated by contraction of the skeletal muscle into transportable energy; and one or more energy conduits such as electrical wires associated with the relatively stationary end of the converter for delivering the transportable energy to power-consuming devices implanted in a body. The device may further comprise a relatively stationary end that is operatively connected to a body structure that is stationary relative to the skeletal muscle.

Claims

1. A converter for converting contractile work of skeletal muscles into transportable energy, comprising:

a relatively stationary end and a mobile end opposite the relatively stationary end and adapted to be connected to a skeletal muscle for movement of the mobile end relative to the relatively stationary end;

at least one pair of tension elements operatively positioned between the mobile and stationary ends of the converter, the tension elements arranged in a serpentine pattern defining pairs of points of a first distance between the tension elements, and pairs of points of a second distance between the tension elements, the first distance being greater than the second distance;

at least one piezoelectric crystal disposed between the tension elements, the at least one piezoelectric crystal adapted to convert the relative movement of the mobile end into transportable energy; and

at least one energy conduit associated with the relatively stationary end for delivering the transportable energy to a power-consuming device implanted in a body.

2. The converter of claim 1, wherein the relatively stationary end of the converter is adapted to be operatively connected to a body structure.

3. The converter of claim 1, wherein the relatively stationary end is operatively connected to a second muscle for movement of the relatively stationary end in a direction opposite to the relative movement of the mobile end.

4. The converter of claim 1, wherein the at least one energy conduit includes at least one of an electrical wire or a tube.

5. The converter of claim 1, wherein the at least one piezoelectric crystal is disposed between a pair of points of the first distance between the tension elements, wherein movement of the mobile end relative to the relatively stationary end is adapted to cause compression of the at least one piezoelectric crystal.

6. The converter of claim 1, further comprising at least one closed band coupled about a pair of points of the second distance between the tension elements, the closed band restricting the tension elements from movement relative to one another.

7. The converter of claim 1, wherein the mobile end includes fibers adapted for coupling to the skeletal muscle.

8. The converter of claim 1, further comprising an encasing block surrounding the tension elements.

9. The converter of claim 8, further comprising a fluid disposed within the encasing block.

10. The converter of claim 1, further comprising:

a plurality of tension elements arranged in respective serpentine patterns, the plurality of tension elements arranged so as to minimize torsion of the converter upon the relative movement of the mobile end.