EP0282349A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ion selective sensors
Assignee: Medisense Inc
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Filing: 1988-03-11
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Granted: —
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Expires: 2008-03-11
Abstract
Abstract The present invention relates to the calibration and stabilisation of disposable ion-selective sensors by means of a hydrogel layer containing the relevant ionic species, located either between the electrodes and their covering membranes for stabilisation, or removably over the analyte contact area for calibration, or both.
Inventors
- 👤 Jerome Francis Mcaleer
- 👤 Christopher Blackburn
- 👤 Howard James Orman
- 👤 Martyn Peter Andrews
- 👤 Jennifer Ann Hirst
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 08:55
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4163; G01N27/28; G01N27/30; G01N27/333; G01N27/403; G01N27/4035
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
36 words
An ion-selective sensor, comprising a reference electrode and an ion-selective electrode, characterised in that a removable hydrophilic gel layer containing a known concentration of the selected ion bridges the analyte-contacting portions of the electrodes for calibration.
Claim 2
Dependent Claim
36 words
An ion-selective sensor, comprising a reference electrode and an ion-selective electrode, characterised in that a removable hydrophilic gel layer containing a known concentration of the selected ion bridges the analyte-contacting portions of the electrodes for calibration.
Claim 3
Dependent Claim
14 words
A sensor according to claim 1, wherein the sensor is a disposable strip sensor.
Claim 4
Dependent Claim
13 words
A sensor according to claim 1 or 2, wherein the gel is hydrogel.
Claim 5
Dependent Claim
16 words
A sensor according to any preceding claim, wherein ionic selectivity is conferred by an ion-selective membrane.
Claim 6
Dependent Claim
23 words
A sensor according to claim 4, wherein the reference electrode has a protective, hydrophobic membrane containing a lipophilic salt of the relevant anion.
Claim 7
Dependent Claim
16 words
A sensor according to claim 5, wherein the hydrophobic membrane is made from highly plasticised PVC.
Claim 8
Dependent Claim
23 words
A sensor according to claim 4, 5 or 6, wherein a gel layer as defined in any preceding claim separates membrane and electrode.
Claim 9
Independent Claim
32 words
A method for calibrating a sensor as defined in any of claims 1 to 7, comprising taking a reading to calibrate the sensor prior to removal of the electrode bridging gel layer.
Claim 10
Dependent Claim
13 words
A sensor as defined in claim 7, not having the removable gel layer.
Claim 11
Dependent Claim
16 words
A sensor according to any of claims 1 to 7 or 9, for detecting potassium ion.
References Cited (Backward Citations)
No citation records indexed.
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