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US4883055A
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Artificially induced blood pulse for use with a pulse oximeter
Assignee: Puritan Bennett Corp
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Filing: 1988-03-11
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Granted: 1989-11-28
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Expires: 2008-03-11
Abstract
Abstract An artificially induced blood pulse used for measuring oxygen saturation in arterial blood is produced by a cuff, wrapped around a body member having an artery upstream from a testing site, when a squeezing pulse is applied by the cuff to the body member.
Inventors
- 👤 Edwin B. Merrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:09
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6801; A61B5/6813; A61B5/6825; A61B5/6826; A61B5/145; A61B5/1455; A61B5/14551; A61B5/14552; A61B5/24; A61B5/316; A61B5/318; A61B5/346; A61B5/349; A61B5/352; A61B5/683; A61B5/6838; A61B5/6824
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A pulse oximeter for determining oxygen saturation comprising: a means for transmitting at least two wavelengths of light related to hemoglobin light absorption through a body member; a cuff means for artificially inducing blood pulse in the body member; photodetection means for detecting light transmitted through said body member and for producing electrical signals that are proportional to intensities of light detected for each wavelength of light; and electronic means for receiving the electronic signals produced by the photodetection means when blood is pulsed in said body member by said cuff means for determining oxygen saturation.
Claim 2
Dependent Claim
96 words
A pulse oximeter for determining oxygen saturation comprising: a means for transmitting at least two wavelengths of light related to hemoglobin light absorption through a body member; a cuff means for artificially inducing blood pulse in the body member; photodetection means for detecting light transmitted through said body member and for producing electrical signals that are proportional to intensities of light detected for each wavelength of light; and electronic means for receiving the electronic signals produced by the photodetection means when blood is pulsed in said body member by said cuff means for determining oxygen saturation.
Claim 3
Dependent Claim
37 words
A pulse oximeter in accordance with claim 1 wherein the cuff means comprises: an inflatable envelope; and a tube interconnected with the inflatable envelope and adapted for introducing and exhausting air into and out of said envelope.
Claim 4
Dependent Claim
18 words
The pulse oximeter of claim 1 wherein the blood pulse is applied in synchronism with normal blood pulses.
Claim 5
Dependent Claim
14 words
The pulse oximeter of claim 1 wherein the cuff means is a finger cuff.
Claim 6
Dependent Claim
14 words
The pulse oximeter of claim 1 wherein the cuff means is an arm cuff.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |