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US4900381A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for manufacturing a measuring probe

Assignee: Koninklijke Philips NV
•
Filing: 1988-02-17
•
Granted: 1990-02-13
•
Expires: 2008-02-17
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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 Guenther
  • 👤 Lothar Rupp

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 07:15
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 144 words
A method for manufacturing an optical probe for invasive measurement of blood parameters with at least one sensor having a selective membrane covering an indicator dye containing gel, and a sheath partially covering said sensor such that a portion of the selective membrane covering said gel is not covered by said sheath, said sheath being fastened on said sensor by a glue, said method comprising: (1) covering said portion of the selective membrane covering said gel with a cover material which is: hardenable, resistant to said glue; and soluble in a dissolvent which neither attacks said glue nor components on said probe; (2) fastening the sheath to the sensor by said glue; and (3) dissolving the cover material from the portion of the selective membrane by said dissolvent such that the portion of the selective membrane covering said gel is free from said glue.
Claim 2
Independent Claim 144 words
A method for manufacturing an optical probe for invasive measurement of blood parameters with at least one sensor having a selective membrane covering an indicator dye containing gel, and a sheath partially covering said sensor such that a portion of the selective membrane covering said gel is not covered by said sheath, said sheath being fastened on said sensor by a glue, said method comprising: (1) covering said portion of the selective membrane covering said gel with a cover material which is: hardenable, resistant to said glue; and soluble in a dissolvent which neither attacks said glue nor components on said probe; (2) fastening the sheath to the sensor by said glue; and (3) dissolving the cover material from the portion of the selective membrane by said dissolvent such that the portion of the selective membrane covering said gel is free from said glue.
Claim 3
Dependent Claim 13 words
Method according to claim 1, characterized in that said cover material is water-soluble.
Claim 4
Dependent Claim 13 words
Method according to claim 1 characterized in that said cover material is air-hardenable.
Claim 5
Dependent Claim 14 words
Method according to claim 1 characterized in that said cover material is a silicate.
Claim 6
Dependent Claim 15 words
Method according to claim 1 characterized in that said cover material is an organic substance.
Claim 7
Dependent Claim 14 words
Method according to claim 1, characterized in that said cover material is polyethylene glycol.
Claim 8
Dependent Claim 21 words
The method recited in claim 1 including an additional initial step of placing, but not attaching said sheath on said sensor.
Claim 9
Dependent Claim 19 words
Method according to claim 5 where said organic substance is chosen from the group consisting of gelatine and pectine.

References Cited (Backward Citations)

US3304353A Cited
US3544668A Cited
US3926705A Cited
EP0073558A2 Cited
US4557900A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-02-12 1993-08-14 1994-02-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-02-12 1997-08-14 1998-02-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-02-12 2001-08-14 2002-02-13 $7700.00 Window Closed / Lapsed

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