GB2108675A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Measuring probe
Assignee: Draegerwerk AG and Co KGaA
•
Filing: 1982-04-28
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Granted: —
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Expires: 2002-04-28
Abstract
Abstract A measuring probe has a first tube (2) one end of which is pointed, and a second tube (3) which partially encloses and is secured to the first tube (2). An end region of the first tube (2), including said one end, extends beyond the second tube (3). At least one electrode is secured within and insulated from the first tube (2). The second tube (3) supports the first tube (2) which can be of a sufficiently small diameter, for example less than 150 mu m for a puncture or opening made by a probe in an artery to be self-sealing without bleeding. The electrodes may sense oxygen, sodium or calcium, and a thermocouple and light guide may also be located in tube 2 so that flow may be measured from the rate of temperature change when the radiation is passed down the light guide from LED 22. <IMAGE>
Inventors
- 👤 Janos Slemmer
- 👤 Peter Vehrens
- 👤 Werner Riedmann
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 01:37
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/145; A61B5/14542; A61B5/02; A61B5/026; A61B5/0275; A61B5/028; A61B5/1455; A61B5/1459; A61B5/1468; A61B5/1473; A61B5/68; A61B5/6846; A61B5/6847; A61B5/6848; A61B2562/00; A61B2562/02; A61B2562/0209; A61B2562/0215
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
61 words
A measuring probe capable of penetrating tissue and comprising: a first tube, one end of which is pointed; a second tube, which partially encloses and is secured to the first tube, with an end region of the first tube including said one end extending beyond the second tube; and one or more electrode secured within and insulated from the first tube.
Claim 2
Dependent Claim
61 words
A measuring probe capable of penetrating tissue and comprising: a first tube, one end of which is pointed; a second tube, which partially encloses and is secured to the first tube, with an end region of the first tube including said one end extending beyond the second tube; and one or more electrode secured within and insulated from the first tube.
Claim 3
Dependent Claim
25 words
A measuring probe as claimed in claim 1, wherein the first and second tubes are secured together so that electrical conduction can occur between them.
Claim 4
Dependent Claim
20 words
A measuring probe as claimed in claim 1 or 2, in which the first and second tubes are glued together.
Claim 5
Dependent Claim
27 words
A measuring probe as claimed in claim 1,2 or 3 wherein one or each of the first tube and the second tube is formed of stainless steel.
Claim 6
Dependent Claim
27 words
A measuring probe as claimed in claim 1,2, 3 or 4, wherein exterior surfaces of the first and second tubes are covered with a layer of Ag/AgCl.
Claim 7
Dependent Claim
43 words
A measuring probe as claimed in any preceding claim, in which the external diameter of the first tube is less than or equal to 150 *4m and the external diameter of the second tube is less than or equal to approximately 500 ssm.
Claim 8
Dependent Claim
34 words
A measuring probe as claimed in any preceding claim, wherein an end of the second tube remote from said one end of the first tube is located in an opening in a holding disc.
Claim 9
Dependent Claim
29 words
A measuring probe as claimed in claim 7, wherein the holding disc is axially displaceable on guide pins and a cylindrical metal screen Is attached to the holding disc.
Claim 10
Dependent Claim
13 words
A measuring probe as claimed in claim 8, which includes a light-emitting diode.
Claim 11
Dependent Claim
18 words
A measuring probe as claimed in claim 9, wherein light-emitting diode is located within the cylindrical metal screen.
Claim 12
Dependent Claim
35 words
A measuring probe as claimed in any preceding claim, which includes, within the first tube adjacent said one end thereof, a first electrode and a thermocouple comprising second and third electrodes which are connected together.
Claim 13
Dependent Claim
44 words
A measuring probe as claimed in claim 11 when appendant to claim 5, wherein in use the Ag/AgCl layer acts as a reference electrode for gas measurement and an electrical connection is provided between the first electrode and the Ag/AgCl layer by an electrolyte.
Claim 14
Dependent Claim
32 words
A measuring probe as claimed in claim 11 or 12, wherein said one end of the first tube is covered with a layer of salt which, in use, acts as an electrolyte.
Claim 15
Dependent Claim
18 words
A measuring probe as claimed in claim 13, wherein the layer of salt is covered with a membrane.
Claim 16
Dependent Claim
46 words
A measuring probe as claimed in claim 11,
12, 13 or 14 when appendant to claim 10, wherein the first electrode comprises an optical fibre covered with a layer of gold, one end of the optical fibre being arranged to receive light from the light-emitting diode.
Claim 17
Dependent Claim
66 words
A measuring probe as claimed in any one of claims 11 to 1 5 when appendant to claim 10, wherein the second electrode, being one of the two electrodes of the thermocouple, comprises a copper wire and the third electrode comprises an optical fibre which is covered with a layer of nickel and one end of which is arranged to receive light from the light-emitting diode.
Claim 18
Dependent Claim
31 words
A measuring probe as claimed in any preceding claim, which includes fourth and fifth electrodes, each of which includes a coating to make it sensitive to a particular ion or ions.
Claim 19
Dependent Claim
27 words
A measuring probe substantially as hereinbefore described with reference to, and as shown in, Figures 1,2 and 3 or Figures 1 and 4 of the accompanying drawings.
Claim 20
Dependent Claim
27 words
A measuring probe substantially as hereinbefore described with reference to, and as shown in, Figures 1,2 and 3 or Figures 1 and 4 of the accompanying drawings.
References Cited (Backward Citations)
No citation records indexed.
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