Patent US5469845A successfully refreshed from Google Patents.
US5469845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable pulse oximeter sensor
Assignee: Nellcor Puritan Bennett LLC
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Filing: 1993-09-13
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Granted: 1995-11-28
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Expires: 2013-09-13
Abstract
Abstract A conformable sensor which uses a flexible substrate, preferably a polyester strip is disclosed. The emitter and detector are mounted on one portion of the strip with conductive traces connecting to them. The second portion of the strip is folded over to cover the emitter and detector and traces, with openings for the emitter and detector. A conductive coating is applied to the strip to provide shielding from electromagnetic interference. Preferably, a second portion of the strip, which folds over the first portion, also has a Faraday shield covering the opening over the detector. The detector and emitter semiconductor chip die (rather than use encapsulated chips) may be mounted directly on the polyester strip so that it is in contact with one of the conductive traces.
Inventors
- 👤 Russell Delonzor
- 👤 Lee Middleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:45
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/145; A61B5/1455; A61B5/14551; A61B5/14552; A61B5/02; A61B5/024; A61B5/02416; A61B5/02427; A61B2562/00; A61B2562/08
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
100 words
A non-invasive, electrooptical sensor for removable attachment to the skin of a patient, comprising: a flexible substrate; a light emitter mounted on one of a first and second portion of the substrate; a light detector mounted on one of said first and second portions of the substrate; and said second portion of the substrate being folded over to cover said first portion of the substrate, said second portion of the substrate at least partially covering the first portion of the substrate and being electrically connected thereto, with said substrate allowing light to reach said light emitter and the light detector.
Claim 2
Dependent Claim
100 words
A non-invasive, electrooptical sensor for removable attachment to the skin of a patient, comprising: a flexible substrate; a light emitter mounted on one of a first and second portion of the substrate; a light detector mounted on one of said first and second portions of the substrate; and said second portion of the substrate being folded over to cover said first portion of the substrate, said second portion of the substrate at least partially covering the first portion of the substrate and being electrically connected thereto, with said substrate allowing light to reach said light emitter and the light detector.
Claim 3
Dependent Claim
50 words
The sensor of claim 1 further comprising: a plurality of conductive lines on at least one of the first and second portions of the substrate connected to the light emitter and the light detector; and a conductive layer on a surface of the substrate shielding a portion of said lines.
Claim 4
Dependent Claim
12 words
The sensor of claim 2 wherein said conductive layer is conductive ink.
Claim 5
Dependent Claim
12 words
The sensor of claim 2 wherein said conductive lines are conductive ink.
Claim 6
Dependent Claim
21 words
The sensor of claim 2 further comprising at least one coding resistor coupled to at least one of said conductive lines.
Claim 7
Dependent Claim
19 words
The sensor of claim 5 wherein at least a portion of said coding resistor is formed from resistive ink.
Claim 8
Dependent Claim
17 words
The sensor of claim 1 wherein said substrate has openings allowing light to reach said light detector.
Claim 9
Dependent Claim
21 words
The sensor of claim 1 wherein said substrate has at least one transparent portion allowing light to reach said light detector.
Claim 10
Dependent Claim
18 words
The sensor of claim 1 further comprising a Faraday shield attached to said substrate over said light detector.
Claim 11
Dependent Claim
26 words
The sensor of claim 1 wherein at least one of said light emitter and light detector comprise a semiconductor die directly mounted on said flexible substrate.
Claim 12
Dependent Claim
34 words
The sensor of claim 10 wherein said semiconductor die has an electrical contact pad on a face thereof which is directly mounted on a conductive area on said flexible substrate and electrically connected thereto.
Claim 13
Dependent Claim
22 words
The sensor of claim 10 further comprising a wire bond coupling said semiconductor die directly to a conductive trace on said substrate,
Claim 14
Dependent Claim
14 words
The sensor of claim 10 further comprising a clear epoxy covering said semiconductor die.
Claim 15
Dependent Claim
34 words
The sensor of claim 1 wherein at least one of said light emitter and light detector has an active surface facing said substrate, said substrate allowing light to pass through to said active surface.
Claim 16
Dependent Claim
10 words
The sensor of claim 1 wherein the substrate is polyester.
Claim 17
Dependent Claim
22 words
The sensor of claim 1 further comprising a plug coupled to one end of one of said portions of said flexible substrate.
Claim 18
Dependent Claim
72 words
A non-invasive, electrooptical sensor for removable attachment to the skin of a patient, comprising: a flexible substrate; a light emitter mounted on one of a first and second portion of the substrate; a light detector mounted on one of said first and second portions of the substrate; said second portion of the substrate at least partially covering the first portion of the substrate and being electrically connected thereto, with said substrate allowing
Claim 19
Dependent Claim
72 words
A non-invasive, electrooptical sensor for removable attachment to the skin of a patient, comprising: a flexible substrate; a light emitter mounted on one of a first and second portion of the substrate; a light detector mounted on one of said first and second portions of the substrate; said second portion of the substrate at least partially covering the first portion of the substrate and being electrically connected thereto, with said substrate allowing
Claim 20
Dependent Claim
18 words
The sensor of claim 17 further comprising a Faraday shield attached to said substrate over said light detector.
Claim 21
Dependent Claim
26 words
The sensor of claim 17 wherein at least one of said light emitter and light detector comprise a semiconductor die directly mounted on said flexible substrate.
Claim 22
Dependent Claim
34 words
The sensor of claim 17 wherein at least one of said light emitter and light detector has an active surface facing said substrate, said substrate allowing light to pass through to said active surface.
Claim 23
Dependent Claim
23 words
The sensor of claim 17 further comprising a plurality of electrical contacts on one of said first and second portions of the substrate.
Claim 24
Dependent Claim
24 words
The sensor of claim 21 wherein said plurality of conductive lines are other than a ground line, and are connected to said electrical contacts.
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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) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |