Thermoelectric device for thermal impact on person's arm

FIELD: medicine.

SUBSTANCE: thermoelectric device for the thermal impact on a person's arm contains a temperature irritant. Thermoelectric modules of the temperature irritant are built into a flexible elastic base with holes for their installation and are connected to a programmable power source by means of electric cables. The holes are located in one row along the base length. The base is provided with the Velcro fastener on edges and is made in the form of two cloths from a synthetic elastic fabric, sewn to each other with capron thread on the perimeter of the installed in them thermoelectric modules at a 2-3 mm distance from their edges. A part of the fabric overlaps surfaces of the thermoelectric modules, covering 2-3 mm of the latter on the perimeter. Internal thermocouple junctions of the thermoelectric modules face the person's arm and are brought into thermal contact with a flexible heat-equalising plate through heat-conductive paste. External thermocouple junctions of the thermoelectric modules through the heat-conductive paste contact with thin-walled flexible reservoirs, filled with a melting working substance with the melt point of 35-45°C. The reservoirs play the role of heat removal and are sewn to the base on their angles with the capron thread. The base from the side of location of the external thermocouple junctions of the thermoelectric modules on its entire area is brought into tight mechanical contact with a cuff, connected with a blower by means of a tube.

EFFECT: application of the invention will make it possible to simplify the device construction and reduce its overall dimensions and weight.

2 dwg

 

The invention relates to medicine and is intended for local contrast thermal effects on one's hand.

The prototype of the invention is the device described in [1]. The device includes a temperature stimulus, including a set of serially connected elements of heat, connected to a programmable DC electric current and installed thermal contact with an elastic layer, each of which consists of a thermoelectric battery, located near the inner elastic layer battery junction has a thermal contact with teplovidelyaushy plate and the external finned heat sink. Elastic interlayer is arranged to ensure a tight contact at the site of a human hand, and each element of thermal effects is provided with a device pairing comprising a hinge with a fixed guide plate are formed with a longitudinal groove of a trapezoidal shape and a first contact pad on its surface connected to the first output of thermoelectric battery by means of a metal spring and a second spring-loaded contact pad placed on the insulation layer of the element temperature effects with the possibility of heavy contact and education electrical connection betwee�communicating with the first contact pad of another element thermal effects. The fin located on the side of the guide plate of the other element temperature effects, has a projection of the same trapezoidal shape, made with the possibility of the formation of a mechanical connection by means of dense occurrence in a longitudinal groove of the guide plate adjacent element by heat.

The disadvantage of this device is the complexity and bulkiness of the structure.

The aim of the invention is to simplify the design of the device, and reducing its overall dimensions and mass.

This object is achieved in that the device thermoelectric modules (TEM) are embedded in a flexible elastic base, the edges provided with a Velcro fastener, with the holes to install them, arranged in one row along its length. The base is made in the form of two webs of synthetic elastic of cloth sewn together with nylon thread around the perimeter of the TEM at a distance from their edges 2-3 mm so that a portion of matter is on the surface of the TEM, closing the last 2-3 mm around the perimeter. Internal junctions TAM, facing the man's hand, is provided in thermal contact with a flexible teplovidelyaushy plate using thermally conductive paste, the opposite external to internal junctions TEM also using heat-conducting paste are in contact with thin gibtelecom, filled with a consumable refrigerant, which has a melting point lies in the range of 35-45°C, performing the role of cooling, these containers are sewn to the base, back to your corners with nylon thread. Base by finding external junctions of thermoelectric modules along their entire surface area is shown in tight mechanical contact with the sleeve, connected to the blower tube.

Block diagram of the device shown in Fig.1-2.

The device comprises a flexible elastic base 1 with holes arranged in one row along the length of the base, to install the TEM 2. The base 1 is made in the form of two webs 3 of synthetic elastic of cloth sewn together with nylon thread around the perimeter of the TEM 2 at a distance from their edges 2-3 mm so that a portion of matter is on the surface TEM 3, closing the last 2-3 mm around the perimeter. Internal junctions 4 TEM 2 facing the human hand shown in thermal contact with a flexible teplovidelyaushy plate 5 through thermally conductive paste 6. The opposite outer junctions 7 TEM 2 through thermally conductive paste 6 are in contact with the thin-walled flexible containers 8 filled with a consumable refrigerant, which has a melting point lies in the range of 35-45°C, performing the role of heat removal. Capacity 8 are sewn to based�se 1 to your corners with nylon thread. TEM electric wires 2 are connected to a programmable power source (not shown) that implements different modes of operation of the modules (cooling, heating, alternation). The base 1 along the edges provided with Velcro-type fasteners 9. The base 1 by finding external junctions TEM 2 over its entire area is indicated in tight mechanical contact with the sleeve 10 connected to the compressor 11 of the tube 12.

The device operates as follows.

Before beginning the procedure, the device is fixed on the section of the human hand subjected to heat, ensuring tight contact due to the elastic properties of the base 1 and the presence of the Velcro fasteners 9. The procedure begins with the inclusion of a programmable power supply, for a given program powering the electric current of the required magnitude and polarity TEM 2. Dose and duration of heat exposure is determined by the attending physician, it is monitoring the patient's condition. The tank 8 filled with a consumable refrigerant, designed for the removal of excess heat from the external junctions 7 TEC 2 cooling area of the hand and teplovidelyaushaya plate 5 provides a uniform temperature distribution. To ensure a tight contact by means of the blower 11 through the tube 12, pumped the air in the cuff 10. For with�et generated inside of the cuff 10, the pressure contact area of the hand and teplovidelyaushy plate 5 is improved, which increases the efficiency of heat transfer from the inner junctions 4 TEM 2 to the impact zone.

The structural simplicity of the device and the possibility of regime change in wide temperature range ensures its application in various fields of medicine.

Literature

1. RF patent for the invention №2299711. Thermoelectric semiconductor device for local thermal effects on the human hand / Ismailov T. A", Avdulov O. V., G. I. Amines, Hasanova M. A., publ. 27.05.2007, bull. No. 15.

Thermoelectric device for thermal effects on the person's hand, containing a thermal stimulus is provided in thermal contact with a human hand, made on the basis of thermoelectric modules brought into contact with teplovidelyaushy plate and the heat removal device and connected to a programmable power source electrical wires, characterized in that thermoelectric modules are integrated into a flexible elastic base, the edges provided with a Velcro fastener, with the holes to install them, arranged in one row along its length, wherein the base is made in the form of two webs of synthetic elastic matter, sewn together with nylon thread around the perimeter of thermoelectric modules at a distance from their edges 2-3 mm in such a way that cha�th matter is on the surface of thermoelectric modules closing the last 2-3 mm around the perimeter, and the internal junctions of thermoelectric modules facing the human hand shown in thermal contact with a flexible teplovidelyaushy plate using thermally conductive paste, the opposite external to internal junctions of thermoelectric modules are also using heat-conducting paste are in contact with the thin-walled flexible containers filled with a consumable refrigerant, which has a melting point lies in the range of 35-45°C, performing the role of cooling, these containers are sewn to the base, back to your corners with nylon thread, and the basis from finding external junctions of thermoelectric modules along their entire surface area is shown in tight mechanical contact with the sleeve, connected to the blower tube.



 

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