SU326793A1 - Radiocapsule - Google Patents

Description

....one

I The invention relates to medical,

, technology, namely radiocapsules for the study of human internal organs

 and animals.

Known radiocapsules containing

a housing with a circuit located inside it, my measurement of the parameters of the gastrointestinal tract under investigation and the transmission circuit. Such radio capsules are relatively large in size, and: therefore convenient.

The proposed radio capsule differs from the known ones in that its body is made of a microwire in glass insulation, which is shaped and i

I which is at the same time an element of the measurement circuit of the parameter being examined, for example an inductor.

Such an embodiment of a radio capsule allows reducing its size while maintaining the amount of information transmitted.

FIG. 1 shows a schematic representation of a pre-, lagay radio capsule for registering a single parameter; in fig. 2 - the same for registering several parameters.

The radio capsule contains a housing made of microwire 1 in glass insulation 2. The turns of the microwire in insulation have a vacuum-tight connection 3 created by sintering, and the housing is shaped to the required shape. The cylinder formed by these turns is closed at the ends by gaskets 4 and has a closed volume 5, inside of which is located the circuit part of the radio capsule.

The nature of the information obtained depends on the insulation material of the microwire. I Various options can be used, for example, the following:

a) the insulation is made of conductive material (copper, silver) - the body is an inductance coil and can be used either as an inductive pressure sensor coil or as part of a generator circuit located inside this body;

b) insulation is made, nz. resistive material (manganin, alloys) the body is a resistor and can be used

Designed as part of a circuit located inside this enclosure;

c) the insulation is made of a thermo-,: -the dependence of the material (nickel, germanium); the housing is a resistance thermometer and can be connected to a temperature measurement circuit located inside the housing; .

d) Isolation of qi is made of black-eye

; metals (gold, platinum). In this case, subject to removing part of the insulation (e.g. by dissolving in hydrofluoric acid, see Fig. 2), the housing becomes a platinum electrode in glass insulation and can be connected to the inside its pH measurement scheme;

e) the insulation is made of ion exchange; th glass - the body is itself

an electrode and can be connected to an internal circuit for measuring p Wa or pK.

Any of the above options reduces the size of the radio capsule due to the fact that part of the capsule circuit, or its sensors, constitute the corps of the radio capsule.

To obtain the most complete volume; The information body of a radio capsule can be made of intertwined microwires with different insulation (Fig. 2), for example, 6 of platinum, 7 of ion exchange glass, 8 of temperature-dependent material, 9 of conductive material, 1O of resistive material. . .....

Subject invention

A radio capsule containing a housing with (placed inside Him a measurement circuit of the parameters of the gastrointestinal tract under study and a transmission circuit., Characterized in that, in order to reduce the size of the radio capsule while maintaining the amount of information transmitted, the housing is made of microwire in glass insulation according to the required form, which is at the same time an element of the measurement circuit of the parameter under study, for example, an inductance coil.

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FIG. 2