RU2562513C2 - Thermoelectric device for thermal exposure on individual's hand - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: thermoelectric device for thermal exposure on an individual's hand comprises a temperature stimulant. Thermoelectric cells of the temperature stimulant are integrated into a flexible support with mount holes and electrically wired to a programmable power supply. The holes are arranged in line along the length of the support. On its periphery, the support has a Velcro fastener and configured as two synthetic flexible cloths sewed together by caprone thread along the perimeter of the mounted thermoelectric cells at 2-3 mm from the borders. The cloth partially comes over the surfaces of the thermoelectric cells and closes 2-3 mm thereof along the perimeter. Internal junctions of the thermoelectric cells face an individual's hand and are placed in a thermal contact to a flexible thermobalancing plate through a heat transfer paste. External junctions of the thermoelectric cells contact flexible metal plates through the heat transfer paste. The metal plates are used for heat takeoff and angularly sewed to the support by caprone thread.

EFFECT: using the invention is supposed to simplify the design and reduce its size and weight.

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Description

The invention relates to medicine and is intended for local contrast thermal effects on the human hand.

The prototype of the invention is the device described in [1]. The device contains a temperature irritant, including a set of series-connected elements of heat exposure, connected to a programmable source of constant electric current and installed with a thermal contact on an elastic layer, each of which consists of a thermoelectric battery, while the inner junction of the battery located near the elastic layer has thermal contact with heat-leveling plate, and the outer one with a fin radiator. The elastic layer is made with the possibility of tight contact on the part of the human hand, and each element of the thermal effect is equipped with an interface device including a hinge with a guide plate fixed on it, made with a longitudinal groove of a trapezoidal shape and a first contact pad on its surface connected to the first terminal of the thermoelectric batteries by means of a metal spring, and a second spring-loaded contact pad located on the thermal insulation layer of the temperature element Exposure to the chance tight contact and forming an electrical connection with a first contact pad of another element temperature feedback. The radiator fin, located on the side of the guide plate of another element of the temperature effect, has a protrusion of the same trapezoidal shape, made with the possibility of mechanical connection by tightly fitting into the longitudinal groove of the guide plate of the neighboring element of the thermal effect.

The disadvantage of this device is the complexity and cumbersome design.

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

The goal is achieved by the fact that in the device thermoelectric modules (TEMs) are embedded in a flexible elastic base, equipped with Velcro fasteners at the edges, with holes for their installation, located in one row along its length. In this case, the base is made in the form of two canvases made of synthetic elastic material, sewn together with a nylon thread around the perimeter of the TEM installed in them at a distance of 2-3 mm from their edges so that some of the material is on the surface of the TEM, covering 2-3 mm last around the perimeter. Internal TEM junctions facing the human hand are brought into thermal contact with a flexible heat-leveling plate through a heat-conducting paste, while opposite to internal TEM junctions are also contacted through a heat-conducting paste with flexible metal plates that act as heat sinks, while metal plates are sewn to the base along its corners with kapron thread.

The block diagram of the device is shown in FIG. 1-2.

The device contains a flexible elastic base 1 with holes located in one row along the length of the base, for installing TEM 2. Base 1 is made in the form of two cloths 3 of synthetic elastic material, sewn together with a nylon thread around the perimeter of the TEM 2 installed in them at a distance from their edges are 2-3 mm in such a way that part of the matter is on the surface of TEM 3, covering 2-3 mm of the latter around the perimeter. The internal junctions 4 of the TEM 2 facing the human hand are brought into thermal contact with the flexible heat-leveling plate 5 through the heat-conducting paste 6. The opposite external junctions 7 of the TEM 2 are also in contact with the flexible metal plates 8, which act as heat sinks, through the heat-conducting paste 7. Metal plates 8 are sewn to the base 1 at its corners with kapron thread. TEM 2 are connected by electric wires to a programmable power source (not shown in the figure), which implements various modes of operation of the modules (cooling, heating, their alternation). The base 1 at the edges is equipped with a Velcro 9. The device operates as follows.

Before starting the procedure, the device is fixed on the part of the person’s hand that is subject to thermal influence, ensuring tight contact due to the elastic properties of the base 1 and the presence of Velcro fasteners 9. The procedure begins with the inclusion of a programmable power supply unit, which, according to a given program, provides electric current of the required size and polarity TEM 2. The dose and duration of heat exposure is determined by the attending physician, he also performs ongoing monitoring of the patient's condition. The metal plates 8 are designed to remove excess heat from the external junctions 7 of the TEM 2 during cooling of the arm section, and the heat-leveling plate 5 ensures uniform temperature distribution.

The constructive simplicity of the device and the possibility of changing modes in a wide temperature range ensures its use in various fields of medicine.

Literature

1. RF patent for the invention No. 2299711. Thermoelectric semiconductor device for local temperature effects on the human hand / Ismailov T.A., Evdulov O.V., Aminov G.I., Khazamova M.A., publ. 05/27/2007, Bull. No. 15.

Claims (1)

A thermoelectric device for thermal impact on a human hand, containing a thermal stimulus brought into thermal contact with a human hand, made on the basis of thermoelectric modules brought into contact with a heat-leveling plate and a heat removal device and connected to a programmable power source by electric wires, characterized in that thermoelectric the modules are built into a flexible elastic base, equipped with Velcro fasteners at the edges, with holes for their installation, located in one row along its length, while the base is made in the form of two canvases of synthetic elastic material, sewn together with a nylon thread around the perimeter of the thermoelectric modules installed in them at a distance of 2-3 mm from their edges so that part of the material finds on the surface of thermoelectric modules, covering 2-3 mm of the latter along the perimeter, the internal junctions of thermoelectric modules facing the human hand are brought into thermal contact with a flexible heat-leveling plate through heat-conducting paste y, which are opposite to the internal external junctions of thermoelectric modules also through heat-conducting paste are in contact with flexible metal plates that act as heat sinks, while metal plates are sewn to the base at their angles with a nylon thread.

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