http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1283158-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_18d92c46f60af8af24e262b67381d7eb |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-14539 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-14542 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-1477 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-1477 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-416 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-30 |
| filingDate | 1970-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1972-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1283158-A |
| titleOfInvention | Percutaneous gas sensor |
| abstract | 1283158 Gas sensor JOHNS HOPKINS UNIVERSITY 20 May 1970 [20 May 1969] 24523/70 Heading G1N In a sensing device for determing tissue carbon dioxide or oxygen and hence effective alveolar ventilation the gas is directly introduced to a liquid filled cup in which liquid is positioned a gaspermeable membrane-faced ph sensing electrode for determining the concentration of the gas. The ph sensing head 10 includes a ph sensitive glass electrode 38 containing a silver chloride coated silver wire and electrolyte E together with a reference silver chloride coated silver wire electrode 44. The electrode 38 is positioned in a saline buffer solution B in a cavity 26 formed by members 32, 34 and the open end of which is closed by a gas permeable but not liquid permeable membrane 64 backed by a thin disc of bibulous material 62 such as nylon mesh. After insertion of the ph sensing electrode in cavity 26 metal sleeve 18 is press-fitted about cylinder 24 so as to form, when the head 10 is positioned over a prepared skin area 5 of a patient's arm, a cup or well in which water or saline solution C is introduced, the device being held in position by a malleable lead base-plate L strapped around the arm, Fig.1 (not shown). Gas in the tissue of the patient diffuses freely through the skin, through liquid C, membrane 64 and liquid B into cavity 26 where it affects the ph measurement on a meter connected to leads 56, 60. The lead base-plate L acts as a thermal sink to mimimize temperature changes within the sensor. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2600557-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2506175-A1 |
| priorityDate | 1969-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.