US4924871A
Expired / Lapsed
US
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Motion artifact detection for continuous blood pressure monitor transducer
Assignee: Omron Healthcare Co Ltd
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Filing: 1988-02-26
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Granted: 1990-05-15
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Expires: 2008-02-26
Abstract
Abstract A method for detecting motion artifacts in data obtained from a blood pressure monitoring transducer is provided which prevents erroneous data related to such artifacts from interfering with the accuracy of the blood pressure measurement by way of continuously monitoring the pressure control source which maintains the transducer hold down pressure, and temporarily delaying data acquisition in the event the hold down pressure changes in excess of a predetermined limit.
Inventors
- 👤 Kevin S. Honeyager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:27
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B2562/00; A61B2562/02; A61B2562/0247; A61B2562/04; A61B2562/046; A61B5/72; A61B5/7203; A61B5/7207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A method for rejecting motion artifacts in data obtained from a blood pressure monitor transducer, comprising the steps of: attaching a transducer to a person's wrist, said transducer comprising a pressurizable bellows and a sensor having a plurality of pressure sensing elements thereon, said sensor being positioned over an artery in said wrist to allow at least one of said pressure sensing elements to produce a pulse amplitude output signal indicative of the pulse waveform in said artery; pressurizing said pressurizable bellows to a predetermined hold down pressure; monitoring the pressure in said pressurizable bellows to detect a change therein above a predetermined limit, said predetermined limit being indicative of motion of said patient; and interrupting the collection of data from said pressure sensing elements for a predetermined time upon detection of a change in pressure above said predetermined limit.
Claim 2
Independent Claim
140 words
A method for rejecting motion artifacts in data obtained from a blood pressure monitor transducer, comprising the steps of: attaching a transducer to a person's wrist, said transducer comprising a pressurizable bellows and a sensor having a plurality of pressure sensing elements thereon, said sensor being positioned over an artery in said wrist to allow at least one of said pressure sensing elements to produce a pulse amplitude output signal indicative of the pulse waveform in said artery; pressurizing said pressurizable bellows to a predetermined hold down pressure; monitoring the pressure in said pressurizable bellows to detect a change therein above a predetermined limit, said predetermined limit being indicative of motion of said patient; and interrupting the collection of data from said pressure sensing elements for a predetermined time upon detection of a change in pressure above said predetermined limit.
References Cited (Backward Citations)
US3123068A
Cited
US3219035A
Cited
US3880145A
Cited
US4030484A
Cited
US4185621A
Cited
US4423738A
Cited
US4360029A
Cited
US4232682A
Cited
US4561447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |