FR2730565A1 - Industrial or Bio-medical multi-parameter miniature probe for fluid analysis - Google Patents

Abstract

The probes miniaturised detectors, for the detection of physical-chemical parameters, are grouped inside circulation cells of the fluid to be examined. These cells have windows formed in the thickness of a tube support eventually using the axial light of the liquid circulation tube. The tube may be rigid, flexible or supple. The detection system consists of several stages of miniaturised detectors each detecting a specific parameter. Probe analysis is made by continuous simultaneous measurement or by a programmed pulse regime switching between detectors to give measurements of: optical density of materials in suspension, over several wavelengths. temperature and pressure. PH, Po2, T ,Redox, humidity in the milli-second domain. fluid speed. fluid clarity by means of photo-conductors coupled to an external spectro-photometer.

Description

PATENT
Miniature multi-parametric physicochemical probes
Deposited by Monsieur orins hybak, 21 rue béranger, 75003 Paris
It is now necessary to capture as much as possible this particular physicochemical phenomenon at the same time and in the same place, so as to establish relevant and reliable control networks for the state of fluids - gases, vapors, waters and liquids. other natures.

 This patent covers the production of environmental probes in the general sense of this term, that is to say in the environment of the biotope in which living beings are immersed as well as in that of the physiological or pathological "interior environment" of these very beings, especially humans and animals. This leads to designing the very geometry of the individual sensors and probes integrating component sensors, which is covered by this patent which is based on two conceptually self-supporting bases: 1) the most advanced miniaturization, 2) topographic ergonomics components and assembly.

 The miniaturization must allow metric exploration as much in the field of biomedical engineering - by catheterization of the blood system as an indication - as in the field of the environment by implantation in situ permanently or not in natural fluids - the water table phreatic as an indication - or others.

 ergonomics must allow convenient and safe use in the ecosystems considered by using the geometrical, physical and chemical constitutive properties of measurement chains, that is to say sensors at their conductive link of the information thus captured and their processing analog or digital transit (amplification, etc.), recording (memories, etc.), automation (self-management of the process, etc.) and remote transmission (telesptic, tele-hearing, etc.).

 This patent covers in particular the dimensional and functional compactification of the canals and their associations; it therefore covers a family of fine metric instruments formed on the geometric basis (tubular cylinders, topological surfaces, polygonal, spherical volumes and their derivatives). The present patent covers in particular the cylindrical or other junctions of tubes of small diameter, possibly catheterizable, whatever the chemical nature and the physical properties of these tubes. Without limitation, the outside diameter of a Po2 sensor can be from 0.5 to 0.7 mm, that of an absolute photometer can be 2.2 mm.

The patent covers the novelty of making sensors and probes with stepped measurement cells on the constituent tube or tubes; These cells consist of windows open in the mass of the generator of the tube, thus forming cells for circulation of the fluids to be examined, inside which the sensitive parts of the chosen parametric sensor (s) are housed. This patent covers several assemblies whose associated elements can be swapped, scient:
a) a sensor grouping in its circulation cell one and single body with the carrier tube, whatever its chemical (metal, metallolae, Polymer) and physical (rigid, flexible, flexible, elastic, plastic, dielectric, isothermal a indicative), containing at least two different parametric sensors and indicatively: 1) a photometric sensor for the measurement of suspended solids (MES) in liquids (polluted water, microbial cultures, as an indication), working advantageously in bJEm where the photoemissive system is in line with the photoreceptive system; 2) a thermometric sensor advantageously made up of a metallic resistance (Pt, Ni for information); a topo-electronic pressure measurement sensor adapted to the juxta-fenestrated wall; 4) a conductimetric sensor formed of wired or non-wired and ergonomic electrodes precisely in that the cell cylinder is made up or coated with metallic elements separated by a dielectric, which is advantageously the carrier tube itself, and thus forming conductimetric electrodes.

 b) he patent also covers, as said in the preamble, a stepped device with at least one other fenestrated cell juxtaposed as close as possible to the other cell or, as necessary, at a distance therefrom.

This second cell contains other parametric sensors, for information: 1) a sensor for the measurement of ia Po2 by Clark or zirconium microelectrode; 2) a glass or non-glass pH sensor; 3) a redox sensor with Au, Ag or Pt electrode; 4) a VAP type humidity sensor for gases, vapors and fumes.

 c) The patent also covers a photoelectric device with another measuring cell, always forming one body with the rest of the probe considered, cell to which the end of a small diameter tube is added by which an opaque index is introduced or colored which, by traversing the distance from this cell to the other, fitted with a photoelectric device, gives the speed and the flow rate of the fluid being analyzed.

 d) The patent also covers a fourth stepped cell in which is placed a photo-emitter connected by photo-conductors to a spectrophotometer located outside the probe which analyzes opacifiers and dyes, the light being able to be diffused at 90.

 e) The bravet moreover covers the ergonomics of circulation of the fluid to be examined having for a measuring cell only one entry or exit window and the flow taking place in the distal zone by the axial channel itself of the suppot tube.

 By a system of tubes of small diameters serving each measuring cell circulates of what to carry out the manual or automatic cleaning program.

Claims (5)

 1. Miniature probes for ecological, industrial and bio-medical uses characterized by their construction made of miniaturized sensors, for physicochemical parameters, which are grouped within the same cell with circulation to the fluid to be examined and formed of windows realizes as in the very thickness of the support tube possibly using the axial lens of this rigid, flexible or flexible tube for this circulation.  2. The probes according to claim 1 characterized by the staging of said circulation cells le. along the support tube, so that the miniaturized sensors, specific to other parameters than those of other stages, work in concert.  3. The analytical probes according to claims 1 and 2 operate inside or even the surface of the reduced space of the support tube by simultaneously measuring continuously or in programmed pulsed regime the following parameters with permutable sensors: optical density of the materials in suspension over several wavelengths, temperature, pressure by topoelectronics, conductimetric factors, PO2, pH, T, redox, humidity in the domain of milliseconds, speed of the fluid, fine clarity of the fluid by internal-external photometry diffusable at 90 using photoconductors coupled to a spectrophotometer external to the probe.  4. The probes according to claims 1, 2 and 3 are characterized in that they are self-cleaning.  5. The probes according to any one of claims i, 2, 3 and 4 are characterized in that a tele-transmission system of optical, acoustic, radio, mechanical, chemical information is @@@ ptable.