Calf compression devices
First Claim
1. A calf compression device for reducing the risk of deep vein thrombosis, the device comprising:
- a first inflatable cuff adapted to be wrapped around the whole or part of a first calf of a human person;
a second inflatable cuff adapted to be wrapped around the whole or part of a second calf of a human person; and
a pump configured to inflate and deflate the first cuff and the second cuff over a regular repeating cycle, said repeating cycle comprising;
a first inflation period of no more than 10 seconds wherein the first cuff is inflated to a pressure of between 40 and 70 mm mercury above ambient;
a first pressure maintenance period of between 10 and 15 seconds wherein the pressure in the first cuff is maintained, the first pressure maintenance period immediately succeeding the first inflation period;
a first deflation period of between 40 and 50 seconds wherein the first cuff is deflated, the first deflation period immediately succeeding the first pressure maintenance period;
a second inflation period of no more than 10 seconds wherein the second cuff is inflated to a pressure of between 40 and 70 mm mercury above ambient, the second inflation period occurring within the combined first pressure maintenance period and first deflation period;
a second pressure maintenance period of between 10 and 15 seconds wherein the pressure in the second cuff is maintained, the second pressure maintenance period immediately succeeding the second inflation period;
a second deflation period of between 40 and 50 seconds wherein the second cuff is deflated, the second deflation period immediately succeeding the second pressure maintenance period; and
a repeated first inflation period immediately succeeding the first deflation period, the repeated first inflation period occurring within the combined second pressure maintenance period and second deflation period.
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Accused Products
Abstract
There is provided a calf compression device for reducing the risk of deep vein thrombosis which comprises an inflatable cuff (100, 200) adapted to be wrapped around the whole or part of a calf of a human person and a pump (104, 204) capable of first inflating the cuff (2) and then deflating the cuff over a regular repeating cycle, said repeating cycle comprising rapidly inflating the cuff (100, 200) to a pressure of between 40 and 70 mm mercury above ambient, maintaining the pressure for 10 to 15 seconds, deflating the cuff (100, 200) over a period of 40 to 50 seconds and then repeating the cycle by rapidly inflating the cuff (100, 200) within 10 seconds of commencement of the cycle.
29 Citations
6 Claims
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1. A calf compression device for reducing the risk of deep vein thrombosis, the device comprising:
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a first inflatable cuff adapted to be wrapped around the whole or part of a first calf of a human person; a second inflatable cuff adapted to be wrapped around the whole or part of a second calf of a human person; and a pump configured to inflate and deflate the first cuff and the second cuff over a regular repeating cycle, said repeating cycle comprising; a first inflation period of no more than 10 seconds wherein the first cuff is inflated to a pressure of between 40 and 70 mm mercury above ambient; a first pressure maintenance period of between 10 and 15 seconds wherein the pressure in the first cuff is maintained, the first pressure maintenance period immediately succeeding the first inflation period; a first deflation period of between 40 and 50 seconds wherein the first cuff is deflated, the first deflation period immediately succeeding the first pressure maintenance period; a second inflation period of no more than 10 seconds wherein the second cuff is inflated to a pressure of between 40 and 70 mm mercury above ambient, the second inflation period occurring within the combined first pressure maintenance period and first deflation period; a second pressure maintenance period of between 10 and 15 seconds wherein the pressure in the second cuff is maintained, the second pressure maintenance period immediately succeeding the second inflation period; a second deflation period of between 40 and 50 seconds wherein the second cuff is deflated, the second deflation period immediately succeeding the second pressure maintenance period; and a repeated first inflation period immediately succeeding the first deflation period, the repeated first inflation period occurring within the combined second pressure maintenance period and second deflation period. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification