System for performing remote ischemic preconditioning
First Claim
Patent Images
1. A system for remote ischemic preconditioning, the system comprising:
- a cuff configured to retract about a limb of a subject;
an actuator connected to the cuff and that, when actuated, causes the cuff to contract about the limb of the subject to reduce blood flow there through; and
a controller that controls the actuator to operate according to a treatment protocol that includes a plurality of sequentially actuated treatment cycles, each treatment cycle comprising;
cuff actuation, during which the actuator contracts the cuff about the limb of the subject to a pressure above systolic pressure to occlude blood flow through the limb;
an ischemic duration, during which the actuator maintains the cuff contracted about the limb at a set point above systolic pressure to occlude blood flow through the limb, the ischemic duration lasting for at least about a minute;
cuff release, during which the actuator releases the cuff to allow blood flow through the limb; and
a reperfusion duration, during which the cuff is maintained in an at least partially relaxed state to allow blood flow through the limb, the reperfusion duration lasting for at least one minute.
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Abstract
A system for remote ischemic preconditioning that includes a cuff, and actuator, and a controller that operates the actuator according to a treatment protocol. The treatment protocol includes a plurality of treatment cycles that each comprise cuff actuation, an ischemic duration, cuff release, and a reperfusion duration.
91 Citations
33 Claims
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1. A system for remote ischemic preconditioning, the system comprising:
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a cuff configured to retract about a limb of a subject; an actuator connected to the cuff and that, when actuated, causes the cuff to contract about the limb of the subject to reduce blood flow there through; and a controller that controls the actuator to operate according to a treatment protocol that includes a plurality of sequentially actuated treatment cycles, each treatment cycle comprising; cuff actuation, during which the actuator contracts the cuff about the limb of the subject to a pressure above systolic pressure to occlude blood flow through the limb; an ischemic duration, during which the actuator maintains the cuff contracted about the limb at a set point above systolic pressure to occlude blood flow through the limb, the ischemic duration lasting for at least about a minute; cuff release, during which the actuator releases the cuff to allow blood flow through the limb; and a reperfusion duration, during which the cuff is maintained in an at least partially relaxed state to allow blood flow through the limb, the reperfusion duration lasting for at least one minute. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of performing remote ischemic preconditioning comprising:
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providing a device that includes; a cuff configured to retract about a limb of a subject; an actuator connected to the cuff and that, when actuated, causes the cuff to contract about the limb of the subject to reduce blood flow there through; and a controller that controls the actuator according to a treatment protocol that includes a plurality of sequentially actuated treatment cycles; initiating operation of the device to effect remote ischemic preconditioning of the subject by actuating the actuator according to the treatment protocol, wherein the treatment protocol comprises; contracting the cuff about the limb of the subject to a pressure above systolic pressure to occlude all blood flow through the limb; maintaining the cuff in a contracted state about the limb at a set point above systolic pressure to occlude all blood flow through the limb for at least about a minute; releasing the cuff to allow blood flow through the limb; maintaining the cuff in at least a partially relaxed state to allow blood flow through the limb for at lest one minute; and repeating the treatment protocol. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A method of performing remote ischemic preconditioning, the method comprising:
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providing a system that includes; a cuff configured to retract about a limb of a subject; an actuator connected to the cuff and that, when actuated, causes the cuff to contract about the limb of the subject to reduce blood flow there through; and a controller that controls the actuator to operate according to a treatment protocol that includes a plurality of sequentially actuated treatment cycles, each treatment cycle comprising; cuff actuation, during which the actuator contracts the cuff about the limb of the subject to a pressure above systolic pressure to occlude all blood flow through the limb; an ischemic duration, during which the actuator maintains the cuff contracted about the limb at a set point above systolic pressure to occlude all blood flow through the limb, the ischemic duration lasting for at least about a minute; cuff release, during which the actuator releases the cuff to allow blood flow through the limb; and a reperfusion duration, during which the cuff is maintained in an at least partially relaxed state to allow blood flow through the limb, the reperfusion duration lasting for at least one minute; positioning the cuff about the limb of the subject; and initiating operation of the device to effect remote ischemic preconditioning of the subject by actuating the actuator according to the treatment protocol.
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Specification