Electro-actuatable compression garments with shape memory elements
A compression garment having one or more flex frames that can be shortened or lengthened to apply or release a compressive force to the limb or other anatomical feature of a user. The compression garment can have a wire made of shape memory material (shape memory alloy). A controller of the compression garment can supply an electrical input to the wire, generating heat that can cause the wire to contract such that the flex frame deflects to a shorter length to apply a compressive force to the limb or other anatomical feature of the user. The one or more flex frames can be contracted in unison or in sequence to direct the flow of bodily fluids in the limb or other anatomical feature of the user.
1 . A compression garment configured to be worn on an anatomical feature of a user, the compression garment comprising:
a flex frame comprising:
a first support structure;
a second support structure;
a first spring connected to the first support structure;
a second spring connected to the second support structure;
a bridge disposed between and connected to the first spring and the second spring the bridge comprising an upper channel and a lower channel disposed on opposing sides of a partition, the upper channel configured to be disposed more distal relative to the anatomical feature of the user compared to the lower channel when the compression garment is worn on the anatomical feature;
a wire comprising a shape memory material, the wire configured to be routed around the first support structure and the second support structure and through the upper channel and the lower channel of the bridge such that the wire crosses over itself at the partition such that the partition electrically insulates portions of the wire disposed through the upper channel and the lower channel from each other; and
a controller configured to heat the wire, configured to cause the wire to shorten such that a length of the flex frame shortens to apply a compressive force to the anatomical feature of the user when the compression garment is worn by the user.
2 . The compression garment of claim 1 , wherein the shape memory material comprises a shape memory alloy.
3 . The compression garment of claim 1 , wherein the controller applies a current to the wire to heat the wire.
4 . The compression garment of claim 1 , further comprising a plurality of protrusions configured to break up fibrotic tissue of the user.
5 . The compression garment of claim 1 , further comprising one or more sensors configured to measure one or more parameters of the user.
6 . The compression garment of claim 5 , wherein the measured one or more parameters are configured to be used by the controller to regulate heating of the wire.
7 . The compression garment of claim 1 , wherein the first spring is connected to a central region of the first support structure and the second spring is connected to a central region of the second support structure.
8 . The compression garment of claim 7 , wherein the first spring extends outward from the central region of the first support structure toward a first lateral edge of the flex frame and a second lateral edge of the flex frame opposite the first lateral edge and the second spring extends outward from the central region of the second support structure toward the first lateral edge of the flex frame and the second lateral edge of the flex frame.
9 . The compression garment of claim 1 , wherein each of the first support structure and the second support structure comprise grooves disposed on opposite ends of the first support structure and the second support structure that receive the wire therein.
10 . The compression garment of claim 1 , wherein the first support structure and the second support structure displace but do not deflect when the length of the flex frame shortens due to the shortening of the wire.
11 . A compression garment configured to be worn on an anatomical feature of a user, the compression garment comprising:
a flex frame comprising a plurality of springs, a plurality of support structures, and a bridge disposed between and connected to adjacent springs of the plurality of springs, the bridge comprising an upper channel and a lower channel disposed on opposing sides of a partition, the upper channel configured to be disposed more distal relative to the anatomical feature of the user compared to the lower channel when the compression garment is worn on the anatomical feature;
a wire comprising a shape memory material, the wire configured to be routed around the plurality of support structures and through the upper channel and the lower channel of the bridge such that the wire crosses over itself at the partition such that the partition electrically insulates portions of the wire disposed through the upper channel and the lower channel from each other; and
a controller configured to heat the wire, configured to cause the wire to shorten such that a length of the flex frame shortens to apply a compressive force to the anatomical feature of the user when the compression garment is worn by the user.
12 . The compression garment of claim 11 , wherein the shape memory material comprises a shape memory alloy.
13 . The compression garment of claim 11 , wherein the controller applies a current to the wire to heat the wire.
14 . The compression garment of claim 11 , further comprising a plurality of protrusions configured to break up fibrotic tissue of the user.
15 . The compression garment of claim 11 , further comprising one or more sensors configured to measure one or more parameters of the user.
16 . The compression garment of claim 15 , wherein the measured one or more parameters are configured to be used by the controller to regulate heating of the wire.
17 . The compression garment of claim 11 , wherein the plurality of springs are connected to central regions of the plurality of support structures.
18 . A compression garment configured to be worn on an anatomical feature of a user, the compression garment comprising:
a flex frame comprising a plurality of springs and a bridge disposed between and connected to adjacent springs of the plurality of springs, the bridge comprising an upper channel and a lower channel disposed on opposing sides of a partition, the upper channel configured to be disposed more distal relative to the anatomical feature of the user compared to the lower channel when the compression garment is worn on the anatomical feature;
a wire comprising a shape memory material, the wire configured to be routed through the upper channel and the lower channel of the bridge such that the wire crosses over itself at the partition such that the partition electrically insulates portions of the wire disposed through the upper channel and the lower channel from each other; and
a controller configured to heat the wire, configured to cause the wire to shorten such that a length of the flex frame shortens to apply a compressive force to the anatomical feature of the user when the compression garment is worn by the user.
19 . The compression garment of claim 18 , wherein the flex frame comprises a plurality of support structures, and wherein the wire is configured to be routed around the plurality of support structures.
20 . The compression garment of claim 19 , wherein the plurality of springs are connected to central regions of the plurality of support structures.