Chemical substance measuring apparatus
First Claim
1. A chemical substance measuring apparatus for measuring the quantities of chemical substances contained in a solution to be assayed, said chemical substance measuring apparatus comprising:
- a chemical-substance sensitive sensor having a potentiometric electrode capable of responding selectively to specific chemical substances;
a liquid-junction type reference electrode comprising;
a tube,a porous thread member housed in a front end opening of said tube wherein said porous thread member has a pore capacity of 0.2 cc/g or more and which has a hydrophilic surfacea silver-silver chloride wire housed in said tube such that at its one end the wire is in contact with said porous thread member and which extends along said tube and is connected to a connector at the other end opening of said tube,an electrical insulating resin filled in said tube at least at the front end portion thereof for fixing both the silver-silver chloride wire and the thread member by contact therewith and for stopping said tube; and
an internal solution retained by suction in said porous thread member.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for measuring the quantities of chemical substances contained in a solution to be assayed by using a chemical-substance sensitive sensor consists of a potentiometric electrode which responds selectively to chemical substances, and a liquid-junction type reference electrode including a tube, a porous thread member housed in the front end opening of the tube and having a pore capacity of 0.2 cc/g or more and at least the surface of which is hydrophilic, a silver-silver chloride wire is provided and housed in the tube so that at one end of the wire is in contact with the thread member and the wire which extends along the tube. The wire is connected to a connector at the other end opening of the tube, an electrical insulating resin fills said tube, at least at the front end portion thereof, for fixing both the silver-silver chloride wire and the thread member by contact therewith and for stopping said tube. An internal solution is retained by suction in said porous thread member. This apparatus is advantageously used for monitoring the living body and may be thermally sterilized.
171 Citations
13 Claims
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1. A chemical substance measuring apparatus for measuring the quantities of chemical substances contained in a solution to be assayed, said chemical substance measuring apparatus comprising:
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a chemical-substance sensitive sensor having a potentiometric electrode capable of responding selectively to specific chemical substances; a liquid-junction type reference electrode comprising; a tube, a porous thread member housed in a front end opening of said tube wherein said porous thread member has a pore capacity of 0.2 cc/g or more and which has a hydrophilic surface a silver-silver chloride wire housed in said tube such that at its one end the wire is in contact with said porous thread member and which extends along said tube and is connected to a connector at the other end opening of said tube, an electrical insulating resin filled in said tube at least at the front end portion thereof for fixing both the silver-silver chloride wire and the thread member by contact therewith and for stopping said tube; and an internal solution retained by suction in said porous thread member. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A chemical substance measuring apparatus for measuring the quantities of chemical substances contained in a solution to be assayed, said chemical substance measuring apparatus comprising:
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a tubular body having at least two independent cavities; a chemical-substance sensitive sensor having; a potentiometric electrode housed in one of said cavities and capable of responding selectively to specific chemical substances, said electrode having a chemical-substance measuring zone projecting outwardly from one end of the tubular body, a lead wire connected at one end thereof to said electrode and extending on the other end side thereof along said cavity, with other end of said lead wire being connected to a connector at an opening of said tubular body at the other end thereof; and an electrical insulating resin filled in said electrode at least at a lead wire junction thereof for stopping the cavity; and a liquid-junction type reference electrode including a porous thread member housed in the front end portion of the other cavity and having a pore capacity of 0.2 cc/g or more and having at least a hydrophilic surface a silver-silver chloride wire housed in said cavity such that one end of said wire is in contact with said thread member and wherein said wire extends along the cavity and is connected to a connector at an opening of the other end of the cavity, an electrical insulating resin filled in said cavity at least at the front end portion thereof, for fixing both the silver-silver chloride wire and the thread member by contact therewith and further for additionally stopping said cavity, and an internal solution retained by suction in the porous thread member. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification
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- Resources
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Current AssigneeKuraray Company Limited 1621 Sakazu Kurashiki City Okayama Japan
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Original AssigneeKuraray Company Limited
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InventorsNakamura, Michihiro, Yano, Makoto, Kusudo, Osamu, Hamamoto, Yoshito, Tsurumi, Hiroshi, Ikeya, Hidehiko
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Primary Examiner(s)Kaplan, G. L.
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Application NumberUS06/724,641Time in Patent Office292 DaysField of Search204/435, 204/412, 204/416, 204/418, 204/419, 204/420, 204/403, 128/635, 357/25US Class Current257/253CPC Class CodesG01N 27/4035 Combination of a single ion...
