Patent EP0750878A1 successfully refreshed from Google Patents.
EP0750878A1
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Blood pressure monitor
Assignee: Colin Corp
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Filing: 1996-01-12
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Granted: —
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Expires: 2016-01-12
Abstract
Abstract The sphygmomanometry using sphygmomanometric means (72) is terminated with sphygmomanometry terminating means (84), when the value of |D M - D CP |/D CP is within the range of a preset reference value α for judgment, the D M representing a phase difference provided based on a monitoring blood value MBP determined with monitoring blood pressure value determining means (76) from a phase difference/blood pressure relationship in the step of initiating sphygmomanometry with the sphygmomanometric means (72) while the D CP representing an actual phase difference determined with phase difference computing means (80). Therefore, when a deviation of the pressure pulse wave/blood pressure relationship is not significant, the execution of unnecessary sphygmomanometry for redetermining the pressure pulse wave/blood pressure relationship can be dispensed with, thus reducing the frequency of sphygmomanometry using a cuff, which in turn reduces the burden on the living body.
Inventors
- 👤 Masayuki c/o Colin Corporation SHINODA
- 👤 Hidekatsu c/o Colin Corporation INUKAI
- 👤 Hiroshi c/o Colin Corporation SAKAI
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 20:39
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/145; A61B5/1455; A61B5/14551; A61B5/02; A61B5/021; A61B5/02108; A61B5/02116; A61B5/02125; A61B5/022; A61B5/72; A61B5/7235; A61B5/7239
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
355 words
A blood pressure monitor apparatus including a blood pressure measuring device for measuring a blood pressure value of a living subject based on variation of a pulse-synchronous wave obtained by changing a pressure of a cuff which is worn on the living subject, a pressure pulse wave sensor adapted to be pressed on an artery of the living subject for detecting a pressure pulse wave produced from the artery of the living subject, a pressure pulse wave-blood pressure relationship determining means for determining, at a predetermined period, a pressure pulse wave-blood pressure relationship between magnitude of pressure pulse wave and blood pressure, based on the pressure pulse wave detected by said pulse wave sensor and the blood pressure value measured by said blood pressure measuring device, by starting said blood pressure measuring device at said predetermined period, and a monitor blood pressure determining means for successively determining a monitor blood pressure value based on an actual pressure pulse wave detected by said pressure pulse wave sensor, according to said pressure pulse wave-blood pressure relationship, the blood pressure monitor apparatus being characterized by comprising: a pair of heartbeat-synchronous wave sensors for detecting, on different portions of said living subject, respective heartbeat-synchronous waves produced in synchronism with a heartbeat of the living subject; a phase difference calculating means for calculating a phase difference of the heartbeat-synchronous waves detected by said pair of heartbeat-synchronous wave sensors; a phase difference-blood pressure relationship determining means for determining a phase difference-blood pressure relationship between phase difference and blood pressure, based on the phase difference calculated by said phase difference calculating means and the blood pressure value measured by said blood pressure measuring device; and a blood pressure measurement terminating means for terminating a blood pressure measurement of said blood pressure measuring device, when a difference between a phase difference obtained according to said phase difference-blood pressure relationship based on a monitor blood pressure value determined by said monitor blood pressure determining means, and a phase difference obtained by said phase difference calculating means, when the blood pressure measurement of said blood pressure measuring device starts, is smaller than a reference value.
Claim 2
Dependent Claim
68 words
A blood pressure monitor apparatus according to claim 1, wherein one of said pair of heartbeat-synchronous wave sensors includes said cuff, a pressure sensor for detecting a pressure of the cuff, and a band-pass filter for extracting, as one of said heartbeat-synchronous waves, a cuff pulse wave produced in synchronism with the heartbeat of the living subject, from the pressure of the cuff detected by the pressure sensor.
Claim 3
Dependent Claim
46 words
A blood pressure monitor apparatus according to claim 2, wherein said phase difference calculating means calculates said phase difference based on said cuff pulse wave detected from said cuff when an increasing of the pressure of said cuff is started by said blood pressure measuring device.
Claim 4
Dependent Claim
28 words
A blood pressure monitor apparatus according to any one of claims 1-3, wherein the other of said pair of heartbeat-synchronous wave sensors includes said pressure pulse wave sensor.
Claim 5
Dependent Claim
44 words
A blood pressure monitor apparatus according to any one of claims 1-4, wherein one of said pair of heartbeat-synchronous wave sensors includes an electrocardiographic waveform detecting device for detecting an electrocardiographic waveform through electrodes which are put on a surface of the living subject.
Claim 6
Dependent Claim
164 words
A blood pressure monitor apparatus including a blood pressure measuring device for measuring, at a predetermined period, a blood pressure value of a living subject based on variation of a pulse wave obtained by changing a pressure of a cuff which is worn on the living subject, the blood pressure monitor apparatus being characterized by comprising: a pair of heartbeat-synchronous wave sensors for detecting, on different portions of the living subject, respective heartbeat-synchronous waves produced in synchronism with a heartbeat of the living subject; a phase difference calculating means for calculating a phase difference of the heartbeat-synchronous waves detected by said pair of heartbeat-synchronous wave sensors; a phase difference change calculating means for calculating a change of the phase differences calculated by said phase difference calculating means; and a starting means for starting a blood pressure measurement of said blood pressure measuring device, when the change of the phase differences calculated by said phase difference change calculating means is greater than a reference value.
Claim 7
Dependent Claim
68 words
A blood pressure monitor apparatus according to claim 6, wherein one of said pair of heartbeat-synchronous wave sensors includes said cuff, a pressure sensor for detecting a pressure of the cuff, and a band-pass filter for extracting, as one of said heartbeat-synchronous waves, a cuff pulse wave produced in synchronism with the heartbeat of the living subject, from the pressure of the cuff detected by the pressure sensor.
Claim 8
Dependent Claim
113 words
A blood pressure monitor apparatus according to claim 7, further comprising a cuff-pressure increasing device which increases, at a predetermined period, said pressure of said cuff up to a predetermined value not higher than, for example, a mean blood pressure of the living subject, while said blood pressure measuring device does not operate, wherein said phase difference calculating means calculates a phase difference between a cuff pulse wave produced in said cuff inflated by said cuff-pressure increasing device and a pulse wave detected by the other of said pair of heartbeat-synchronous wave sensors which is worn on a portion of the living subject different from a portion on which the cuff is worn.
Claim 9
Dependent Claim
100 words
A blood pressure monitor apparatus according to claim 6, further comprising a cuff-pressure increasing device for increasing, at a predetermined period, said pressure of said cuff up to a predetermined value, while said blood pressure measuring device does not operate, wherein said phase difference calculating means calculates a phase difference between a cuff pulse wave produced in said cuff inflated by said cuff-pressure increasing device and a pulse-synchronous wave detected by the other of said pair of pulse-synchronous wave sensors which is worn on a portion of the living subject different from a portion on which the cuff is worn.
Claim 10
Dependent Claim
66 words
A blood pressure monitor apparatus according to any one of claims 6-9, wherein the other of said pair of heartbeat-synchronous wave sensors includes a photoelectric pulse wave sensor which detects a photoelectric pulse wave based on variation in quantity of light transmitted through, or reflected from, a portion of the living subject, the light being emitted toward a surface of said portion of the living subject.
Claim 11
Dependent Claim
44 words
A blood pressure monitor apparatus according to any one of claims 6-10, wherein one of said pair of heartbeat-synchronous wave sensors includes an electrocardiographic waveform detecting device which detects an electrocardiographic waveform through electrodes which are put on a surface of the living subject.
References Cited (Backward Citations)
No citation records indexed.
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