RU220798U1 - Arctic group first aid kit - Google Patents

Abstract

Use: in emergency and military medicine services in the Arctic region and is intended to maintain the temperature regime of thermolabile drugs and medical supplies during transportation in extremely low temperatures. Objective: improving the main operational characteristics and indicators of the APPG, such as the retention time of residual heat in the internal space of the APPG, through the use of thermal insulation material with the lowest thermal conductivity coefficient (λ). Essence: APPG-A contains a body consisting of two elements - a valve and a base, on the outer surfaces of which an outer cover based on holofiber is mounted, and a lining cover is mounted on the inner surfaces. On the back wall there is a M.O.L.L.E type fastening system, which allows you to attach this first aid kit closer to the user’s body under the main equipment of winter clothing, for additional heating of the first aid kit during prolonged exposure to extremely low temperatures. Also on the cover valve there are insulated zipper linings to reduce heat leaks from the interior of the first aid kit. In addition, the outer cover of the first aid kit is made of fabric with a polyurethane coating “Cordon-500” KMF. The design of the APPG-A first aid kit allows you to preserve the residual heat of the internal space and the positive temperature of thermolabile medications in conditions of extremely low temperatures (minus 50°C) in the Arctic region, for emergency medical care after leaving the vehicle for 20 minutes.

Description

The Arctic group first aid kit (hereinafter referred to as APPG-A) is designed for storing and transporting thermolabile drugs and medical supplies in extremely low temperatures and will find effective use in emergency and military medicine services in the Arctic region.

The quality of most medicines and medical products when exposed to the open air can deteriorate under the influence of low temperature, high humidity, and bright lighting. Some drugs decompose at low temperatures, which accelerate the removal of substance crystals from solutions, destroy colloidal and emulsion systems, and sometimes promote polymerization and other chemical processes. As a result of freezing and subsequent thawing, various drugs in liquid dosage form irreversibly change their physicochemical properties. Exposure to low temperatures is especially dangerous for drugs, the freezing and thawing of which breaks the tightness of the consumer packaging.

A device is known, according to RF patent No. 2303974 - “Home first aid kit for providing self- and mutual assistance.”

The device contains a case that contains six blisters, painted in different colors with medications located in them, which have identifying inscriptions and designations on the front.

The known device cannot be used in conditions of extremely low temperatures of the Arctic region for a long time since the materials used are not resistant to extremely low temperatures, there is no heat-insulating layer, which leads to cooling and subsequent freezing of the contents after a short period of time.

The closest technical solution to the proposed utility model and chosen as a prototype is the device accepted for supply by order of the Ministry of Defense of the Russian Federation No. 744 dated May 21, 2011 - “Group first aid kit (APPG-A)” registration certificate No. RZN 2013/1209 .

The device contains a housing, which is a parallelepiped of two parts - a valve and a housing. The body has buttons for fixing the valve, half rings and a fastening system compatible with the M.O.L.L.E system. In the internal volume of the case there are partitions that divide the internal volume into compartments.

The known device cannot be used in conditions of extremely low temperatures of the Arctic region for a long time since the fabric and fittings used are not resistant to extremely low temperatures, there is no heat-insulating layer, and there is no tightness of the valve closure, which is a significant cold bridge at temperatures down to -50° C and leads to cooling and subsequent freezing of the contents after a short period of time. The objective of the proposed technical solution is to improve the basic operational characteristics and indicators of the “Group First Aid Kit (AFG)”, such as the retention time of residual heat in the internal space of the AFPG due to the use of thermal insulation material 6 with the lowest thermal conductivity coefficient (λ).

To solve this problem, a device has been proposed - APPG-A, containing a main case, which is a parallelepiped of two parts - a valve and a body. The body has buttons and a zipper to secure the valve, half rings and a fastening system compatible with the M.O.L.L.E system. In the internal volume of the case there are partitions that divide the internal volume into compartments. The housing has one common volume for medicines and medical devices that may be exposed to short-term exposure to extremely low temperatures. The body is equipped with a Velcro-type textile fastener for tight fixation of the insulated linings on the zippers. On the back wall of the case there is a M.O.L.L.E type fastening system.

Unlike the prototype, the main cover APPG-A is made of two elements - a valve and a body, on the outer surfaces of which an outer fabric with a polyurethane coating based on holofiber is mounted, and a lining fabric is mounted on the inner surfaces. On the back wall there is a M.O.L.L.E type fastening system, which allows you to attach this first aid kit closer to the user’s body under the main equipment of winter clothing, for additional heating of the first aid kit during prolonged exposure to extremely low temperatures. Also on the valve of the main case there are insulated zipper linings to reduce heat leaks from the internal space of the first aid kit. In addition, the outer fabric with a polyurethane coating is made of KMF Kordon-500 material.

The essence of the proposed utility model is that the design of the APPG-A first aid kit allows you to preserve the residual heat of the internal space and the positive temperature of thermolabile drugs in conditions of extremely low temperatures (minus 50°C) in the Arctic region, for emergency medical care after leaving the vehicle in within 20 minutes, which is confirmed by bench tests. In FIG. Figure 5 shows a table of the dependence of the temperature of the internal space of APPG-A on time and a graph of the dependence of the cooling temperature of the internal volume of APPG-A on time (Fig. 6).

Of great importance for solving this problem is the use of new advanced thermal insulation materials and fabrics in this development.

The use of KMF “Cordon-500” fabric in the colors of the corresponding clothing fabric used in polar units with a polyurethane coating makes it possible to improve the wear resistance, as well as the windproof and water-repellent properties of the APPG-A outer cover. The plain weave of the polyamide threads of this fabric gives it strength and elasticity and does not allow possible cuts on the fabric to diverge. Water-repellent properties are ensured by a polyurethane coating, which is hot applied to the fabric during production. This fabric is resistant to aggressive liquids (gasoline, diesel fuel, aviation kerosene, oils containing acids up to 90%), washing and dry cleaning (soda ash, washing powder, laundry soap). Also, KMF Kordon-500 fabric is resistant to solar reaction. The thermal insulation material “Isosoft 304” was chosen as insulation for the outer cover of APPG-A, since the fibers of this material are bonded with polymer cross-links, the density of the fabric is 250 g/ ^m2 , which provides better protection from the effects of negative temperatures while maintaining an acceptable level of hygroscopicity. The use of thermal insulation material - "Isosoft 304" allows you to increase the retention time of residual heat, since "Isosoft 304" has the lowest thermal conductivity coefficient among hygroscopic materials λ = 0.031 W/mK.

The essence of the proposed utility model is illustrated by drawings, where

in fig. 1 - layout diagram of the main elements of APPG-A (front view);

in fig. 2 - layout diagram of the main elements of APPG-A (rear view);

in fig. 3 - layout diagram of the main elements of APPG-A (front view, open);

in fig. 4 - diagram of the shell of the APPG-A case;

in fig. 5 - table of the dependence of the temperature of the internal space of APPG-A on time when the product is in conditions of extremely low temperature minus 50°C;

in fig. 6 - graph of the cooling temperature of the internal volume of APPG-A versus time.

APPG-A (Fig. 1, Fig. 2, Fig. 3) contains: main cover 1 made of two elements of valve 2 and body 3. The valve is fixed on the main cover using a zipper 4, buttons 5 and is closed with insulated linings 6 with textile fasteners of the Velcro type 7. Case 3 has a M.O.L.L.E system 8 on the back wall, half rings 9, and a textile fastener of the Velcro type 7 in the upper part. On the valve 2 there is a removable emblem “Red Cross” 10 and tongues 11. Case 3 has partitions 12 , which divide the internal space into compartments. The main cover (Fig. 4) is a three-layer structure consisting of lining fabric 13, insulation based on holofiber 14, and outer fabric with a polyurethane coating 15.

Thus, thanks to the design features of the APPG-A cover, the use of advanced thermal insulation materials and fabrics as insulation, as well as design features - the presence of insulated linings for insulating zippers, the main operational characteristics and performance of the Arctic first aid kit (APPG-A) have been improved. .

Claims (2)

1. Group Arctic first aid kit for storing and transporting thermolabile drugs and medical supplies in conditions of extremely low temperatures down to -50°C, containing a main case, which is a parallelepiped of two parts - a valve and a body, which has a common volume for drugs and medical products that can be exposed to extremely low temperatures down to -50°C, zipper, buttons, textile fastener for fixing the valve, half rings, on the back wall of the main case there are M.O.L.L.E. fasteners, while the valve has insulated linings with textile fasteners Velcro type for zipper insulation, the group Arctic first aid kit includes partitions dividing the internal volume of the case into compartments, in the group Arctic first aid kit the main cover is made with a heat-insulating layer made of Isosoft 304 material, mounted on the outer surfaces of the main cover outer fabric with polyurethane coating; lining fabric is attached to the inner surfaces of the main cover. 2. Group Arctic first aid kit according to claim 1, characterized in that the outer fabric of the main cover is made of polyurethane-coated fabric “Cordon-500” KMF.

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