Patent US2647556A successfully refreshed from Google Patents.
EP0279004A1
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Method for manufacturing a measuring probe
Assignee: Hewlett Packard GmbH Germany
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Filing: 1987-02-17
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Granted: —
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Expires: 2007-02-17
Abstract
Abstract Probes, preferably optical probes for the invasive measurement of blood parameters consist of a plurality of sensors (or at least one sensor and a stabilizing core, or at least one single sensor) (11,17), each of these sensors (11,17) having a diffusion zone with a selective membrane (15) and all together surrounded by a stabilizing sheath (18); this sheath (18) is to be fastened on the sensor(s) (11,17) by a glue (22). A method is described for manufacturing such probes. This method includes the steps of covering the selective membrane (15) by a hardenable and soluble cover material (21), in particular a silicate, then fastening said sheath (18) on the sensors (11,17) by glue (22) - which cannot reach the selective membranes (15) as they are just covered by the cover material (21) - and then dissolving said cover material (21). This method guarantees that the selective membranes (15) are free of glue (22) after the manufacturing process.
Inventors
- 👤 Martin Günther
- 👤 Lothar Rupp
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 12:12
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/77; G01N21/7703; A; A61; A61B; A61B5/00; A61B5/145; A61B5/14539; A61B5/1455; A61B5/1459
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
153 words
Method for manufacturing a measuring probe, especially an optical probe for the invasive measurement of blood parameters such as pH, pO₂ or PCO₂, with at least one sensor (11, 17) having a selective membrane (15, 27, 28) and a sheath (18, 34) at least partially covering said sensor (11, 17) and fastened on said sensor (11, 17) by a glue (22, 36), said method being characterized by the following manufacturing steps: (1) The selective membrane (15, 27, 28) of the sensor (11, 17) is covered by a cover material (21, 37) which is (1.1) hardenable, (1.2) resistent to said glue (22, 36), (1.3) soluble in a dissolvent which neither attacks said glue (22, 36) nor the probe components, (2) the sheath (18, 34) is fastened on the sensor (11, 17) by said glue (22, 36), (3) the cover material (21, 37) is dissolved from the selective membrane (15, 27, 28) by said dissolvent.
Claim 2
Dependent Claim
153 words
Method for manufacturing a measuring probe, especially an optical probe for the invasive measurement of blood parameters such as pH, pO₂ or PCO₂, with at least one sensor (11, 17) having a selective membrane (15, 27, 28) and a sheath (18, 34) at least partially covering said sensor (11, 17) and fastened on said sensor (11, 17) by a glue (22, 36), said method being characterized by the following manufacturing steps: (1) The selective membrane (15, 27, 28) of the sensor (11, 17) is covered by a cover material (21, 37) which is (1.1) hardenable, (1.2) resistent to said glue (22, 36), (1.3) soluble in a dissolvent which neither attacks said glue (22, 36) nor the probe components, (2) the sheath (18, 34) is fastened on the sensor (11, 17) by said glue (22, 36), (3) the cover material (21, 37) is dissolved from the selective membrane (15, 27, 28) by said dissolvent.
Claim 3
Dependent Claim
15 words
Method according to claim 1, characterized in that said cover material (21, 37) is water-soluble.
Claim 4
Dependent Claim
17 words
Method according to claim 1 or 2, characterized in that said cover material (21, 37) is air-hardenable.
Claim 5
Dependent Claim
18 words
Method according to claims 1 to 3, characterized in that said cover material (21, 37) is a silicate.
Claim 6
Dependent Claim
27 words
Method according to at least one of claims 1 to 3, characterized in that said cover material (21, 37) is an organic substance, preferably gelatine or pectine.
Claim 7
Dependent Claim
21 words
Method according to at least one of claims 1 to 3, characterized in that said cover material (21, 37) is polyethylenglycol.
Claim 8
Dependent Claim
69 words
Method according to at least one of the preceding claims in which said measuring probe consists of - a plurality of sensors (11, 17) - and/or of at least one sensor (11, 17) and a stabilizing core (16) - in particular a wire - , characterized in that said sheath (18, 34) covers all of these sensors (11, 17) and/or the stabilizing core (16) and is fastened on them.
Claim 9
Dependent Claim
140 words
Method according to at least one of the preceding claims, characterized in that said sheath (18, 34) is loosely put over said sensor(s) (11, 17) and/or the stabilizing core (16) before said cover material (21, 37) is applied onto the selective membrane(s) (15, 27, 28) and that said glue (22, 36) is introduced between the sensor(s) (11, 17) and the sheath (18, 34) through openings (23, 38, 39) in said sheath (18, 34) when the cover material (21, 37) has hardened. Method according to at least one of claims 1 to 7, characterised in that the cover material (21,37) is applied onto the selective membrane(s) (15, 27, 28), said glue (22, 36) is applied onto the sensor(s) (11, 17) when said cover material (21, 37) has hardened and then said sheath (18, 34) is put over these sensor(s) (11, 17).
References Cited (Backward Citations)
EP0073558A2
Cited
US4557900A
Cited
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