US5218967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic sphygmomanometer
Assignee: Terumo Corp
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Filing: 1991-11-27
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Granted: 1993-06-15
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Expires: 2011-11-27
Abstract
Abstract An electronic sphygmomanometer employing both the Korotkoff method and the oscillometric method which is thereby capable of accurately measuring blood pressure due to the advantages of the two methods. The electronic sphygmomanometer is arranged in such a manner that either of the results of measurements of the two methods can be automatically selected. A gate for detecting the Korotkoff sound by using an oscillation in cuff pressure is automatically stopped, and that the validity of the Korotkoff sound is determined in accordance with a change in the height of the oscillating pulse wave.
Inventors
- 👤 Tsutomu Shinomiya
- 👤 Takahiro Souma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:57
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/02208
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
156 words
An electronic sphygmomanometer employing both a Korotkoff method in which blood pressure is measured in accordance with an appearance or disappearance of Korotkoff sound detected by a cuff pressed to a portion of a living body, and an oscillometric method in which blood pressure is measured in accordance with a change in a level of oscillation in a cuff pressure overlapping a pressure of said cuff, said electronic sphygmomanometer comprising: first blood pressure measuring means for measuring blood pressures in accordance with the appearance or disappearance of Korotkoff sound; second blood pressure measuring means for measuring blood pressures in accordance with the change in the level of oscillation overlapping the cuff pressure; and measurement stopping means for stopping measurement of said oscillation in cuff pressure in accordance with a detection of said oscillation before a recognition point of one of a systolic blood pressure and a diastolic blood pressure obtained in accordance with said Korotkoff sound.
Claim 2
Dependent Claim
156 words
An electronic sphygmomanometer employing both a Korotkoff method in which blood pressure is measured in accordance with an appearance or disappearance of Korotkoff sound detected by a cuff pressed to a portion of a living body, and an oscillometric method in which blood pressure is measured in accordance with a change in a level of oscillation in a cuff pressure overlapping a pressure of said cuff, said electronic sphygmomanometer comprising: first blood pressure measuring means for measuring blood pressures in accordance with the appearance or disappearance of Korotkoff sound; second blood pressure measuring means for measuring blood pressures in accordance with the change in the level of oscillation overlapping the cuff pressure; and measurement stopping means for stopping measurement of said oscillation in cuff pressure in accordance with a detection of said oscillation before a recognition point of one of a systolic blood pressure and a diastolic blood pressure obtained in accordance with said Korotkoff sound.
Claim 3
Dependent Claim
47 words
An electronic sphygmomanometer according to claim 1, wherein said measurement stopping means stops said measurement of said oscillation in cuff pressure when a number of pulses of said oscillation corresponding to said Korotkoff sound which has been first detected is less than a predetermined number of pulses
References Cited (Backward Citations)
US4009709A
Cited
JPS5919691A
Cited
EP0154995A2
Cited
JPS6140416A
Cited
GB2165052A
Cited
US4712564A
Cited
EP0240924A2
Cited
EP0378683A1
Cited
US5054495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |