EP0120108A1
Expired / Lapsed
EP
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Electrochemical cell for determining a particular component of a fluid
Assignee: Draeger Nederland Bv Te Best
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Filing: 1983-03-25
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Granted: —
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Expires: 2003-03-25
Abstract
Abstract An electrochemical cell for determining oxygen or another component of a gaseous or a liquid fluid comprises a semiconductive substrate (9) supporting at least a cathode layer (20). The cathode (20) and the substrate (9) are covered by a thin layer (12) of a hydrophilic polymer matrix which is separated from the fluid by means of a selectively permeable membrane (13). A portion (14) of the polymer layer projects into an electrolyte compartment (4) so that the electrolyte (4) by means of the capillary action of the polymer layer (12) can enter the space around cathode (20). An anode (10) might be provided either on the substrate (9) or a separate anode (11 a) can be located within the electrolyte compartment (4). A temperature sensor (15) and/or a current amplifier and impedance converter may be integrated into substrate (9) which also carries connectors (16) for an electrical cable (17).
Inventors
- 👤 Martinus Henricus Kuypers
- 👤 Martinus Petrus Pancratius Vervoort
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 14:51
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/145; A61B5/14542; A61B5/1468; A61B5/1473; G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
135 words
Electrochemical cell for determining a particular property or component of a fluid comprising a) cathode (20) and spaced therefrom an anode (11,11a); b) a space (4) communicating with said electrodes and adapted for being filled with an electrolyte; c) a selectively permeable membrane (13) separating said electrodes from the fluid characterized in that d) the cathode (20) is provided on an insulating substrate (9); e) a thin layer (12) of hydrophylic polymer is provided between the membrane (13) and the cathode (20) and covers the cathode and part of the substrate (9); f) a part of the substrate together with a part of the layer covered by the membrane is adapted to be exposed to the fluid; g) another part (14) of the layer (12) is in direct contact with a closed electrolyte compartment (4).
Claim 2
Dependent Claim
135 words
Electrochemical cell for determining a particular property or component of a fluid comprising a) cathode (20) and spaced therefrom an anode (11,11a); b) a space (4) communicating with said electrodes and adapted for being filled with an electrolyte; c) a selectively permeable membrane (13) separating said electrodes from the fluid characterized in that d) the cathode (20) is provided on an insulating substrate (9); e) a thin layer (12) of hydrophylic polymer is provided between the membrane (13) and the cathode (20) and covers the cathode and part of the substrate (9); f) a part of the substrate together with a part of the layer covered by the membrane is adapted to be exposed to the fluid; g) another part (14) of the layer (12) is in direct contact with a closed electrolyte compartment (4).
Claim 3
Dependent Claim
16 words
Cell according to claim 1, characterized in that the anode (11)is provided on the substrate (9).
Claim 4
Dependent Claim
19 words
Cell according to claim 1, characterized in that the anode (11a) is provided separately in the electrolyte compartment (4).
Claim 5
Dependent Claim
36 words
Cell according to one of claims 1 to 3, characterized in t h a t the cathode (20), the hydrogel layer (12) and the membrane (13) are made by thin film technology on the substrate (9).
Claim 6
Dependent Claim
23 words
Cell according to claim 4, characterized in that the membrane (13) is made by centrifugal spinning technique or other depositing techniques and lithography.
Claim 7
Dependent Claim
41 words
Cell according to one of claims 1 to 5, characterized in that the substrate (9) is held in a tube (1) by means of a supporting structure (8) and is provided with electrical connectors (16) for at least the cathode (20).
Claim 8
Dependent Claim
20 words
Cell according to one of claim 1 to 6, characterized by a temperature sensor (15) provided on the substrate (9).
Claim 9
Dependent Claim
30 words
Cell according to one of claims 1 to 7, characterized in that the substrate (9) is a semiconductor substrate comprising an integrated impedance converter and amplifier or a current amplifier.
Claim 10
Dependent Claim
59 words
Cell according to one of claims 1 to 8 for measuring in a gaseous fluid, characterized in that the electrolyte compartment (4) is formed by a tube-like housing (1) and a part of the substrate (9) together with a part of the layer (12) covered by the membrane (13) projects outside from one end wall (10) of the housing.
Claim 11
Dependent Claim
31 words
Cell according to one of claim 1 to 8, characterized in that the housing (1) forms part of a thermostatically controlled adapter (3)for becoming inserted into an opening of patient mouthpiece.
Claim 12
Dependent Claim
60 words
Cell according to one of claims 1 to 8 for invasive measurement by means of a catheter, characterized in that a radial opening (22) is provided in the tip of the catheter (1), said opening allowing access of the fluid to the membrane (13). 12Cell according to claim 11, characterized in that the membrane (13) is a liquid ion membrane.
Claim 13
Dependent Claim
26 words
Cell according to claim 12, characterized in that the liquid ion membrane is deposited on the top of the hydrogel layer (12) by thin film technology.
References Cited (Backward Citations)
GB1505343A
Cited
FR2441166A1
Cited
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