Method and device for prevention of deep vein thrombosis
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United States of America Patent
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Jul 1, 1997
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N/A
app pub date -
Nov 21, 1995
filing date -
Nov 21, 1995
priority date (Note) -
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Abstract
An electrical stimulator and method of prevention of deep vein thrombosis, ankle edema, and venostasis. An electronic circuit that includes a power source and a micro controller for processing the signals generated by a duration control circuit, a frequency control circuit, and an intensity control circuit so as to generate a square wave pattern or wave form having a controllable duration ranging between 0.1 to 0.3 milliseconds, a controllable frequency ranging between 0.001 to 0.1 cycles per seconds, and a controllable intensity ranging between 1 to 20 milliamperes. In application, an electrode portion having an exposed juxtapositioned anode and cathode is secured to the patient externally at or near the tibial nerve at the popliteal fossa, on both legs. The specific wave pattern generated stimulates the nerve causing a muscle contraction, whether passively or actively, of the calves which prevents deep vein thrombosis, ankle edema, and venostasis.
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