Surgery – Truss – Pad
Patent
1985-04-24
1987-04-28
Howell, Kyle L.
Surgery
Truss
Pad
128680, A61B 502
Patent
active
046605673
ABSTRACT:
Method and apparatus are disclosed for linearly pressurizing a cuff, affixed to the limb of a patient, with gas from a liquified gas tank, monitoring Korotkoff sounds that appear and disappear during cuff pressurization to ascertain approximate systolic and diastolic blood pressures as cuff pressurization is in process, halting pressurization at a point slightly higher than the approximate systolic blood pressure and then immediately depressurizing the cuff at a regulated rate to actually measure and determine true systolic blood pressure. Following the determination of systolic blood pressure, the cuff is depressurized at a rapid rate down to a point slightly higher than the approximate diastolic blood pressure and is then depressurized again at the regulated rate again to actually measure and determine true diastolic blood pressure. When a Korotkoff sound cannot be found during attempted actual measurement of the diastolic blood pressure, the currently prevailing cuff pressure is raised by a predetermined amount and the cuff is then vented again at the regulated rate to remeasure and redetermine diastolic blood pressure for the purpose of covering any fluctuation in the patient's blood pressure.
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"Comparision of Indirect Pressure Measurements (Korotkoff) with Simultaneous Direct Brachial Artery Pressure Distal to the Cuff", Seymour B. London and Rose E. London--Advances in Internal Medicine, vol. 13, pp. 127-142.
Kaneko Yoshihiro
Tochikubo Osamu
Yokoi Hiroyuki
Howell Kyle L.
Sykes Angela D.
Takeda Medical Company Limited
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