US5752914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mesh EMI shield for pulse oximetry sensor
Assignee: Nellcor Puritan Bennett LLC
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Filing: 1996-05-28
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Granted: 1998-05-19
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Expires: 2016-05-28
Abstract
Abstract An improved electromagnetic shield for a photodetector which uses a wire mesh screen laminated to an insulating layer. A portion of the wire mesh screen and laminated layer sandwich can then be cut out to provide an individual electromagnetic shield. The sandwich combination is flexible, and can be easily wrapped around the photodetector. Preferably, an adhesive is on one side of the insulating layer, to allow the wrapped combination to adhere to the photodetector.
Inventors
- 👤 Russell Delonzor
- 👤 Al Namy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:45
CPC Classifications
H; H05; H05K; H05K9/00; A; A61; A61B; A61B5/00; A61B5/145; A61B5/1455; A61B5/14551; A61B5/14552; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/259
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
63 words
A method for providing an electromagnetic shield for a photodetector, comprising the steps of: providing an insulating layer; providing a wire mesh screen; laminating said wire mesh screen to said insulating layer to produce a laminated sandwich; cutting out individual electromagnetic shields from said laminated sandwich; and placing one of said electromagnetic shields adjacent said photodetector, with said insulating layer facing said photodetector.
Claim 2
Independent Claim
63 words
A method for providing an electromagnetic shield for a photodetector, comprising the steps of: providing an insulating layer; providing a wire mesh screen; laminating said wire mesh screen to said insulating layer to produce a laminated sandwich; cutting out individual electromagnetic shields from said laminated sandwich; and placing one of said electromagnetic shields adjacent said photodetector, with said insulating layer facing said photodetector.
Claim 3
Dependent Claim
25 words
The method of claim 1 further comprising the step of providing an adhesive on a side of said insulating layer opposite said wire mesh screen.
Claim 4
Dependent Claim
26 words
The method of claim 1 further comprising the step of wrapping said electromagnetic shield around leads to said photodetector up to a shield around said leads.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein said wire mesh screen is copper.
Claim 6
Dependent Claim
33 words
The method of claim 4 wherein said wire mesh screen is comprised of wires having a diameter of 0.0020-0.0024 inches, and having a grid of between 75×75 and 125×125 wires per square inch.
Claim 7
Independent Claim
96 words
A method for providing an electromagnetic shield for a photodetector, comprising: providing an insulating layer; providing a wire mesh screen; laminating said wire mesh screen to said insulating layer to produce a laminated sandwich; cutting out individual electromagnetic shields from said laminated sandwich; and placing one of said electromagnetic shields adjacent said photodetector, with said insulating layer facing said photodetector; wherein said insulating layer is a double sided adhesive layer bonded to a release liner on at least one side, wherein said cutting step cuts through said double sided adhesive layer but not said release liner.
Claim 8
Independent Claim
96 words
A method for providing an electromagnetic shield for a photodetector, comprising: providing an insulating layer; providing a wire mesh screen; laminating said wire mesh screen to said insulating layer to produce a laminated sandwich; cutting out individual electromagnetic shields from said laminated sandwich; and placing one of said electromagnetic shields adjacent said photodetector, with said insulating layer facing said photodetector; wherein said insulating layer is a double sided adhesive layer bonded to a release liner on at least one side, wherein said cutting step cuts through said double sided adhesive layer but not said release liner.
Claim 9
Independent Claim
137 words
A method for providing an electromagnetic shield for a photodetector, comprising the steps of: providing an insulating layer as a double sided adhesive layer bonded to a release liner; providing a copper wire mesh screen; laminating said wire mesh screen to said insulating layer to produce a laminated sandwich; cutting out individual electromagnetic shields from said laminated sandwich by cutting through said copper wire mesh screen and said insulating layer, but not through said release liner; separating one of said electromagnetic shields from said release liner; and at least partially enclosing said photodetector with said one of said electromagnetic shields, with a side of said electromagnetic shield having said insulating layer being adjacent said photodetector, and including, within the area wrapped by said electromagnetic shield, leads connected to said photodetector up to a shield around said leads.
Claim 10
Independent Claim
137 words
A method for providing an electromagnetic shield for a photodetector, comprising the steps of: providing an insulating layer as a double sided adhesive layer bonded to a release liner; providing a copper wire mesh screen; laminating said wire mesh screen to said insulating layer to produce a laminated sandwich; cutting out individual electromagnetic shields from said laminated sandwich by cutting through said copper wire mesh screen and said insulating layer, but not through said release liner; separating one of said electromagnetic shields from said release liner; and at least partially enclosing said photodetector with said one of said electromagnetic shields, with a side of said electromagnetic shield having said insulating layer being adjacent said photodetector, and including, within the area wrapped by said electromagnetic shield, leads connected to said photodetector up to a shield around said leads.
Claim 11
Dependent Claim
37 words
A sensor comprising: a photodetector mounted in said sensor; a wire mesh screen; and an insulating layer bonded to said wire mesh screen to form an electromagnetic shield, said electromagnetic shield at least partially enclosing said photodetector.
Claim 12
Dependent Claim
37 words
A sensor comprising: a photodetector mounted in said sensor; a wire mesh screen; and an insulating layer bonded to said wire mesh screen to form an electromagnetic shield, said electromagnetic shield at least partially enclosing said photodetector.
Claim 13
Dependent Claim
21 words
The sensor of claim 8 further comprising an adhesive bonded to said insulating layer for holding said electromagnetic shield in position.
Claim 14
Dependent Claim
26 words
The sensor of claim 8 wherein said electromagnetic shield is also at least partially enclosing leads of said photodetector up to a shield for said leads.
Claim 15
Dependent Claim
12 words
The sensor of claim 8 wherein said wire mesh screen is copper.
Claim 16
Dependent Claim
36 words
The sensor of claim 11 wherein said wire mesh screen is comprised of wires having a diameter of 0.0020 inches to 0.0024 inches, and having a grid of between 75×75 and 125×125 wires per square inch.
Claim 17
Dependent Claim
83 words
A pulse oximeter sensor comprising: a photoemitter mounted in said sensor; a photodetector mounted in said sensor; a copper wire mesh screen; an insulating layer bonded to said wire mesh screen to form an electromagnetic shield, said electromagnetic shield at least partially enclosing said photodetector; an adhesive bonded to said insulating layer for holding said electromagnetic shield in a wrapped position; and wherein said electromagnetic shield is also at least partially enclosing leads of said photodetector up to a shield for said leads.
Claim 18
Dependent Claim
83 words
A pulse oximeter sensor comprising: a photoemitter mounted in said sensor; a photodetector mounted in said sensor; a copper wire mesh screen; an insulating layer bonded to said wire mesh screen to form an electromagnetic shield, said electromagnetic shield at least partially enclosing said photodetector; an adhesive bonded to said insulating layer for holding said electromagnetic shield in a wrapped position; and wherein said electromagnetic shield is also at least partially enclosing leads of said photodetector up to a shield for said leads.
Claim 19
Dependent Claim
70 words
A sensor comprising: a photodetector mounted in said sensor; an insulating layer; and a conductive layer bonded to said insulating layer to form an electromagnetic shield, said electromagnetic shield at least partially enclosing said photodetector; said conductive layer being sufficiently transparent to block less than 50% of the light directed at said photodetector, and being sufficiently conductive to reduce electromagnetic interference by at least 50% compared to an unshielded photodetector.
Claim 20
Dependent Claim
70 words
A sensor comprising: a photodetector mounted in said sensor; an insulating layer; and a conductive layer bonded to said insulating layer to form an electromagnetic shield, said electromagnetic shield at least partially enclosing said photodetector; said conductive layer being sufficiently transparent to block less than 50% of the light directed at said photodetector, and being sufficiently conductive to reduce electromagnetic interference by at least 50% compared to an unshielded photodetector.
Claim 21
Dependent Claim
23 words
The sensor of claim 14 further comprising an adhesive bonded to said insulating layer for holding said electromagnetic shield in a wrapped position.
Claim 22
Dependent Claim
24 words
The sensor of claim 14 wherein said electromagnetic shield is also wrapped around leads of said photodetector up to a shield for said leads.
Claim 23
Dependent Claim
13 words
The sensor of claim 14 wherein said conductive layer is indium tin oxide.
Claim 24
Dependent Claim
15 words
The sensor of claim 14 further comprising a ground lead coupled to said conductive layer.
Claim 25
Dependent Claim
19 words
The sensor of claim 18 wherein said ground lead is coupled to said conductive layer by a conductive adhesive.
Claim 26
Dependent Claim
22 words
The sensor of claim 18 wherein said ground lead is connected to said conductive layer by a low temperature curing conductive epoxy.
Claim 27
Dependent Claim
11 words
The sensor of claim 14 wherein said conductive layer is silver.
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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) | 2001-05-18 | 2001-11-17 | 2002-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-18 | 2005-11-17 | 2006-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-18 | 2009-11-17 | 2010-05-19 | $7700.00 | Window Closed / Lapsed |