Compression garment apparatus

• US 9,271,890 B1
• Filed: 01/28/2015
• Issued: 03/01/2016
• Est. Priority Date: 02/11/2014
• Status: Active Grant

• Current Assignee: Koya Medical, Inc.
• Original Assignee: Compression Kinetics, Inc.
• Inventors: Pamplin, John C., Dennis, Robert Glenn
• Primary Examiner(s): Yu, Justine
• Assistant Examiner(s): Lyddane, Kathrynn
• Application Number:
  US14/607,249
• Time in Patent Office: 398 Days
• US Class Current: 1/1
• CPC Class Codes: A61F 13/08 Elastic stockings; for contracting aneurisms
• CPC Class Codes: A61H 11/00 Belts, strips or combs for massage purposes
• CPC Class Codes: A61H 2011/005 with belt or strap expanding and contracting around an encircled body part
• CPC Class Codes: A61H 2201/02 heated or cooled
• CPC Class Codes: A61H 2201/0207 heated
• CPC Class Codes: A61H 2201/0214 cooled
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 2205/02 Head
• CPC Class Codes: A61H 2205/04 neck
• CPC Class Codes: A61H 2205/06 Arms
• CPC Class Codes: A61H 2205/106 for the lower legs
• CPC Class Codes: A61H 2205/12 Feet
• CPC Class Codes: A61H 2209/00 Devices for avoiding blood stagnation, e.g. Deep Vein Thrombosis [DVT] devices
• CPC Class Codes: A61H 2230/065 used as a control parameter for the apparatus
• CPC Class Codes: A61H 2230/208 used as a control parameter for the apparatus
• CPC Class Codes: A61H 23/02 with electric or magnetic drive
• CPC Class Codes: A61H 7/001 without substantial movement between the skin and the device
• CPC Class Codes: A61H 7/007 Kneading

Abstract

A compression garment apparatus for a body part of an human and/or animal having a flexible backing, attaching means, a segmented flex frame, and a shape memory alloy on the segmented flex frame. The shape memory alloy can be connected to two terminals on the frame forming a circuit. A controller can be connected to the terminals applying current to the shape memory alloy at defined intervals providing intermittent, sequenced, or continuous compression therapy.

Claims

1. A compression garment apparatus for a body part of an animal comprising:

a flexible backing for contacting the body part of the animal;

an attaching means connected to the flexible backing;

at least one segmented flex frame connected to the flexible backing;

a first terminal and a second terminal formed on the segmented flex frame;

a shape memory alloy disposed on the segmented flex frame with a first end of the shape memory alloy engaging the first terminal and a second end of the shape memory alloy engaging the second terminal, the first terminal and the second terminal each performing a mechanical connection and an electrical connection for forming a circuit incorporating the shape memory alloy;

a controller operatively connected to the first terminal and the second terminal, wherein the controller is adapted to selectively apply a current to the shape memory alloy sufficient to shorten a length of the shape memory alloy at least 0.25 percent;

(i) the at least one segmented flex frame comprising;

a series of frame segments including at least two struts and at least one spring link;

wherein each strut has a groove configured to receive the shape memory alloy so that the shape memory alloy may be used to decrease a distance between two adjacent struts; and

each spring link, located entirely between a pair of adjacent frame segments is configured to transition between a first shape and a collapsed shape in response to a change of length of the shape memory alloy; and

each spring link having at least two bridges, wherein each bridge is connected between an outer perimeter of the spring link and an outer perimeter of an adjacent frame segment.

2. The compression garment apparatus of claim 1, further comprising a fabric cover disposed over the shape memory alloy and attached to the segmented flex frame.

3. The compression garment apparatus of claim 1, wherein the attaching means is a tube of expandable fabric.

4. The compression garment apparatus of claim 1, further comprising a tensioner secured to the flexible backing, the tensioner is configured to apply a baseline pressure to the body part.

5. The compression garment apparatus of claim 1, wherein the shape memory alloy is in the form of at least one of:

a ribbon, a wire, a mesh, a sheet, a film, or combinations thereof.

6. The compression garment apparatus of claim 1, wherein the controller comprises a microprocessor powered by a power supply, wherein the controller is in communication with a data storage, the data storage comprising computer instructions to instruct the microprocessor to:

provide preset levels of current to provide the compression therapy; and

provide current based on preset units of time.

7. The compression garment apparatus of claim 6, wherein the shape memory alloy is configured to perform as a sensor to measure at least one physical characteristic of the compression garment apparatus selected from changes in dimension of the compression garment apparatus, and stiffness of the body part.

8. The compression garment apparatus of claim 6, comprising a sensor connected to the controller for sensing and generating signals to the controller representing at least one of:

changes in dimension of the compression garment apparatus and stiffness of the body part, changes in dimension of the body part, measurable physiological parameters of the animal, or combinations thereof.

9. The compression garment apparatus of claim 1, further comprising a series of timers, wherein each timer is adapted to provide current to the shape memory alloy when the timer is “

on” and

no current to the shape memory alloy when the timer is “

off”

, further wherein each timer is adapted to provide current to at least a portion of the shape memory alloy on at least a portion of a segmented flex frame.

10. The compression garment apparatus of claim 1, wherein the current is a direct current or an alternating current.

11. The compression garment apparatus of claim 1, wherein the current is provided from 3 volts to 48 volts.

12. The compression garment apparatus of claim 1, wherein the shortening or lengthening of the shape memory alloy occurs within 10 degrees Centigrade of a target transition temperature.

13. The compression garment apparatus of claim 1, further comprising at least one standby phase, wherein a temperature of the shape memory alloy is held by the controller just below a target transition temperature keeping the length of the shape memory alloy unchanged but preparing the shape memory alloy for shortening of the shape memory alloy.

14. The compression garment apparatus of claim 6, comprising computer instructions in the data storage to instruct the microprocessor to compare sensed real time measured garment dimensions to preset garment dimension values and change current delivery to the shape memory alloy to achieve the preset garment dimension values.

15. The compression garment apparatus of claim 1, wherein the attaching means is a plurality of fastening straps.

16. The compression garment apparatus of claim 1 wherein at least two struts, at least one spring link located between the at least two struts, and at least two bridges located between the at least two struts are all made from an identical material.

17. The compression garment apparatus of claim 1 wherein at least two struts, at least one spring link located between the at least two struts, and at least two bridges located between the at least two struts are all made during one injection molding process.

18. The compression garment apparatus of claim 1 wherein:

a first bridge is located on a first side of the at least one spring link between the at least one spring link and a first strut

a second bridge is located on a second side of the at least one spring link between the at least one spring link and a second strut; and

the at least one spring link has an inner perimeter in addition to the outer perimeter of the spring link such that when the shape memory alloy is used to decrease a distance between two adjacent struts, the distance between the inner perimeter on the first side of the at least one spring link to the second side of the at least one spring link is decreased.

19. The compression garment apparatus of claim 1 wherein a distance between an inner perimeter on a first side of the at least one spring link to the inner perimeter on a second side of the at least one spring link is reduced to zero as inner perimeter on the first side of the at least one spring link contacts the inner perimeter on the second side of the at least one spring link.

20. A segmented flex frame for use in a compression garment, the segmented flex frame comprising:

a series of frame segments including at least two struts and at least one spring link;

wherein each strut has a groove configured to receive a portion of a length of shape memory alloy so that the length of shape memory alloy may be used to decrease a distance between two adjacent struts; and

each spring link, located entirely between a pair of adjacent frame segments is configured to transition between a first shape and a collapsed shape in response to a reduction of a length of the shape memory alloy and

each spring link having at least two bridges, wherein each bridge is connected between an outer perimeter of the spring link and an outer perimeter of an adjacent frame segment.

21. The segmented flex frame of claim 20 wherein the segmented flex frame is connected to a flexible backing for contacting a body part of an animal and an attaching means connected to the flexible backing.

22. The segmented flex frame of claim 20 further comprising:

a first terminal and a second terminal formed on the segmented flex frame;

a length of shape memory alloy disposed on the segmented flex frame with a first end of the length of shape memory alloy engaging the first terminal and a second end of the length of shape memory alloy engaging the second terminal; and

a controller operatively connected to the first terminal and the second terminal, wherein the controller is adapted to selectively apply a current to the length of shape memory alloy sufficient for the reduction of the length of shape memory alloy at least 0.25 percent.

23. The segmented flex frame of claim 20 wherein at least two struts, at least one spring link located between the at least two struts, and at least two bridges located between the at least two struts share a common planar face.

24. The segmented flex frame of claim 20 wherein the segmented flex frame is created as one integral piece during an injection molding process.