
US Patent No: 4,869,261
Number of patents in Portfolio can not be more than 2000
Automatic noninvasive blood pressure monitor
Stats
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Sep 26, 1989
Issued date -
Mar 22, 1988
filing date -
07/171,601
serial no -
Expired
status
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Abstract
An automatic noninvasive blood pressure monitor with a continuous correction of the setpoint and of the gain without interruptions of the blood pressure measurement has a pressure vibration generator, the frequency of vibration being higher than that of the highest harmonic component of blood pressure wave, and a correction circuit, the input of which is connected either directly or through at least one amplifier of the basic servosystem to the sensor of the plethysmographic gauge and output of which is fed to the input of the circuit for correction of the setpoint of the basic servosystem.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,475,554 Noninvasive continuous blood pressure meter | 37 | 1981 | |
| 4,539,997 Method and device for controlling the cuff pressure in measuring the blood pressure in a finger by means of photo-electric plethysmograph | 35 | 1982 | |
| 4,510,940 Plethysmograph pressure correcting arrangement | 16 | 1982 | |
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| 4,524,777 Automatic, continuous and indirect blood pressure measurement apparatus | 30 | 1983 | |