CS266154B1 - Microtermocarbon needle - Google Patents

Abstract

The microthermocouple needle consists of at least two thermocouples embedded in a two-component resin inside the injection needle, which may be interrupted longitudinally. The microthermocouple needle can be used in healthcare, food processing and wherever it is necessary to measure temperature simultaneously at different depths.

Description

KADEŘÁBEK JAN, PRAGUE, CHOICE OF CHARLES RNDr. CSc., HRADEC KRALOVE

Micro-thermocouple needle (57) The micro-thermocouple needle consists in that at least two thermocouples are embedded in the two-component resin inside the injection needle, possibly longitudinally interrupted. The thermocouple needle can be used in healthcare, food and wherever temperature needs to be measured at different depths simultaneously.

CS 266154 Bl

CS 266 154 Bl

The invention relates to a micro-thermocouple needle.

To control the temperature in the treatment of some tumors by radiofrequency or microwave heating, thermometer sensors placed on a flexible conductor are inserted through a catheter, which is then retracted, or a sensor placed on the needle tip. In the first case, it is necessary to use a hypodermic needle with a large size, in the elongated dial of the needle. In both pFfnrinrh, the patient is more burdened and trauinated and the physician has more work to introduce the sensors.

The above-mentioned drawbacks are overcome by the micro-thermocouple needle according to the invention, which consists in that at least two thermocouples are embedded in the two-component resin inside the injection needle, possibly longitudinally interrupted. The thermocouples are formed at the joints of the insulated individual conductors with the insulated common conductor. The conductors are guided inside the injection needle and further through an insulating tube which is connected to the injection needle by an insulating tube.

Placing the required number of thermocouples inside the needle will improve handling during use, reduce patient loading by disproportionate number of punctures, and extend the life of the thermocouples.

At external multijew diameters of less than 400 µm, the risk associated with tissue damage by puncture and the potential risk associated with induction of metastasis by this route are virtually eliminated.

Claims (1)

FIG. 1 is a front elevational view of a multiple thermocouple needle in cross sectional view; Fig. 2 is a cross-sectional plan view of a multiple thermocouple needle closed; Fig. 3 is a cross-sectional plan view of a multiple thermocouple needle longitudinally interrupted to reduce heating in a high-frequency field. The required number of insulated individual conductors 2 is conductively connected to the insulated common conductor 1 at the desired distances. If the material of the common conductor X and the individual conductors χ is different from that of the sheath E of the injection needle X, the conductor joints must be insulated with varnish χ. The thermocouple bundle 3 is inserted into a stainless steel injection needle χ whose low thermal conductivity prevents the thermocouple from being influenced by heat transfer over the injection needle sheath χ and is embedded in a two-component resin 6. The insulated common conductor X and the individual conductors 2 is connected to the injection needle χ by the insulating material χ. By the described multiple micro-thermocouple needle it is possible to measure temperatures in multiple planes in various liquids, loose or soft materials into which the needle can be inserted. object of the invention A micro-thermocouple needle, characterized in that at least two thermocouples X are embedded within the injection needle 5, optionally longitudinally interrupted, with two-component resin 6, the thermocouples 3 being at the joints of the isolated individual conductors 2 with the insulated common conductor 1. and a flexible insulating tube 1 which is connected to the injection needle X by an insulating material terminal X. 1 drawing