US3628525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood oxygenation and pulse rate monitoring apparatus
Assignee: Warner Lambert Technologies Inc
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Filing: 1969-06-19
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Granted: 1971-12-21
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Expires: 1989-06-19
Abstract
Abstract An ear oximeter functioning as a transducer for monitoring blood oxygen saturation and pulse rate comprising an ear clamp having a pair of opposed jaws between which body tissue may be clamped for transillumination by light emitted from one jaw into the clamped tissue. Thermostatically controlled heating means arterializes the transilluminated tissue and light emitter from the tissue is monitored by a photoelectric light-intensity meter for indication of percent oxygen in blood within the arterialized tissue.
Inventors
- 👤 Michael L Polanyi
- 👤 David S Ostrowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:10
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/145; A61B5/1455; A61B5/14551; A61B5/14552; A61B5/02; A61B5/024; A61B5/02416; A61B5/02427; A61B5/1491; A61B5/68; A61B5/6801; A61B5/6813; A61B5/6814; A61B5/6815; A61B5/6816
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
195 words
An oximeter device comprising: a main supporting member; a pair of parallel clamping jaws extending laterally from said member, said jaws being movable at least one toward the other along said member for clamping a section of body tissue between their corresponding terminal ends; light-emitting means in a first of said jaws of said pair adjacent its terminal end and a light-receiving platen adjacent the terminal of the second of said jaws between which said section of body tissue is adapted to be received for said clamping thereof and is adapted to be transilluminated by light emitted from said emitting means; an electrical heating element adjacent said platen for heating same; a thermistor in said platen; temperature control means in electrical circuit with said heating element and thermistor, said control means being responsive to variations in electrical resistance of said thermistor for maintaining the temperature of said platen and said section of tissue substantially constant during said transillumination of the tissue; means adjacent said terminal end of said jaw for receiving light transmitted through said tissue and; light intensity measuring means operatively associated with said light-receiving means for measuring the intensity of light received thereby.
Claim 2
Dependent Claim
195 words
An oximeter device comprising: a main supporting member; a pair of parallel clamping jaws extending laterally from said member, said jaws being movable at least one toward the other along said member for clamping a section of body tissue between their corresponding terminal ends; light-emitting means in a first of said jaws of said pair adjacent its terminal end and a light-receiving platen adjacent the terminal of the second of said jaws between which said section of body tissue is adapted to be received for said clamping thereof and is adapted to be transilluminated by light emitted from said emitting means; an electrical heating element adjacent said platen for heating same; a thermistor in said platen; temperature control means in electrical circuit with said heating element and thermistor, said control means being responsive to variations in electrical resistance of said thermistor for maintaining the temperature of said platen and said section of tissue substantially constant during said transillumination of the tissue; means adjacent said terminal end of said jaw for receiving light transmitted through said tissue and; light intensity measuring means operatively associated with said light-receiving means for measuring the intensity of light received thereby.
Claim 3
Dependent Claim
30 words
An oximeter device according to claim 1 wherein said light-emitting means comprises one end of an elongated bundle of light-conducting fibers having a source of light adjacent its opposite end.
Claim 4
Dependent Claim
17 words
An oximeter device according to claim 1 wherein said light-emitting means comprises at least one light-emitting diode.
Claim 5
Dependent Claim
28 words
An oximeter device according to claim 1 wherein said thermistor in said platen is positioned adjacent the surface thereof against which said tissue is adapted to be clamped.
Claim 6
Dependent Claim
31 words
An oximeter device according to claim 1 wherein said movable jaw is biased toward the other jaw of said pair thereof by spring means whereby said tissue may be clamped nonsubjectively.
Claim 7
Dependent Claim
26 words
An oximeter device according to claim 5 including means for releasably fixing said jaws against separation from a clamped relationship with said section of body tissue.
Claim 8
Dependent Claim
34 words
An oximeter device according to claim 6 further including an inflatable transparent membrane extending over said light-emitting means and means through which an inflating medium may be directed into said membrane to distend same.
Claim 9
Dependent Claim
31 words
An oximeter device according to claim 1 wherein said light-receiving means comprises one end of an elongated bundle of light-conducting fibers and said light-intensity measuring means includes a photoelectric transducer system.
Claim 10
Dependent Claim
43 words
An oximeter device according to claim 1 wherein said light-receiving means comprises at least one photoelectric detectoR for converting light received thereby into electrical energy and said light-intensity measuring means includes electrical energy measuring and intensity indicating means electrically connected to said detector.
Claim 11
Dependent Claim
34 words
An oximeter device according to claim 2 wherein portions of said light-conducting fibers adjacent said one end of said bundle are spaced a preselected radial distance away from the principal axis of the bundle.
Claim 12
Dependent Claim
24 words
An oximeter device according to claim 10 wherein said portions of said light-conducting fibers are disposed annularly about said principal axis of said bundle.
Claim 13
Dependent Claim
34 words
An oximeter device according to claim 8 wherein portions of said light-conducting fibers adjacent said one end of said bundle are spaced a preselected radial distance away from the principal axis of the bundle.
Claim 14
Dependent Claim
24 words
An oximeter device according to claim 13 wherein said portions of said light-conducting fibers are disposed annularly about said principal axis of said bundle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |