RU165680U1 - SELF-EXPANDING SHELL TAMPON FOR TEMPORARY STOP OF BLEEDING IN WOUNDED CHANNELS - Google Patents

Abstract

1. A self-expanding shell swab for temporarily stopping bleeding in the wound canals, containing an elastic tensile sheath, characterized in that the sheath is fixed on one side of the polymer hollow tubular applicator with a hole on the free slice provided with a perforation and mushroom tip for attaching an elastic tensile sheath around the applicator, on the applicator, on the same side, a sealed threaded connector is installed, to which an aerosol can with a valve containing two omponentnuyu mixture to create a self-expanding self-hardening polyurethane peny.2. A tampon according to claim 1, characterized in that the membrane is coated with a local hemostatic drug.

Description

The utility model relates to medicine, namely to disaster medicine, military medicine, surgery, to medical equipment, specifically to hemostatic devices, and is intended for tight plugging of wound channels in soft tissues and can be used to temporarily stop external bleeding during first aid in the field due to the creation of a constant sufficient pressure inside the wound canal with a swab to stop bleeding without stopping collateral circulation.

A known analogue (medical device and method for squeezing a blood vessel) in the description of the invention in the patent application of the Russian Federation No. 2014121250, АВВ 17/132, publ. 12/10/2015, containing a hollow elongated cylindrical body with holes at the ends with a retaining element for attaching the body to a limb at one end. To achieve stopping the bleeding, the device is pressed against the vessel deep in the wound and fixed on the patient’s limbs by applying a retaining element around the patient’s limbs and fixing the retaining element by means of a fastening means.

Disadvantages: To achieve hemostasis, it is necessary to accurately hit and press the device into a bleeding vessel deep in the wound, which is impossible without removing blood from the wound cavity and visual localization of the blood vessel. The device does not provide a tight wound tamponade and does not allow to stop bleeding from several vessels simultaneously, from small vessels, parenchymal and capillary bleeding. Fixing the device only on the surface of the limb does not exclude a change in the position of the device in the wound and the accidental termination of the compression of the vessel when the limb moves.

The closest analogue is known (pneumotampon) in the description of the invention in RF patent No. 2434594, АВВ 17/12, publ. 11/27/2011, containing a pneumatic elastic chamber coated with local hemostatic drug, with a pneumatic cylinder and a pressure relief valve, fixed in the bed of the means for fixing in the form of a belt with a buckle. The tampon is fixed above the bleeding wound and due to the increase in pressure in the pneumotampon and its increase in volume, stopping bleeding from the wound

Disadvantages: A superficial application of a pneumotampone without a tight tamponade of the wound cavity may not ensure stopping bleeding from deep wound channels, in wounds under arrays of subcutaneous fat and muscle tissue, with wound channels extending into the interosseous spaces. The pneumatic method of creating pressure does not exclude the accidental release of compression in case of violation of the tightness of the chamber of the pneumotamp or failure of the pressure relief valve. The pressure of the pneumotamp may change during transportation of the injured person by air.

The utility model is based on the task of creating a self-expanding shell swab to temporarily stop bleeding in the wound canals, which is more effective for stopping bleeding due to the fact that it excludes the technical possibility of reducing the created pressure on soft tissues and blood vessels by expanded and hardened polyurethane foam; it is possible to apply pressure in all directions relative to the cavity of the wound channel at any depth of the wound channel; enhanced hemostatic effect due to contact with a hemostatic drug deposited on the elastic membrane of a self-expanding swab and due to the release of thermal energy during the exothermic foaming reaction; reliable fixation of the self-expanding shell swab in the wound canal is ensured due to the fulfillment of the entire form of the wound cavity and elastic stretching of soft tissues adjacent to the wound; it is possible to apply additional pressure to the wound, if necessary, through an installed self-expanding swab; it is possible to use a self-expanding swab in a significant range of ambient temperatures (not lower than minus 10 ° C), in a humid atmosphere, in the rain, with strong winds and snowfalls; and also provides the ability to use in the design of the tampon many standard available commercially available components.

The solution of the technical problem is provided by the fact that in a self-expanding shell swab to temporarily stop bleeding in the wound channels containing an elastic tensile sheath, the sheath is fixed on one side of the polymer hollow tubular applicator with a hole in the free section provided with a perforation and mushroom tip for attaching the elastic tensile sheath around the applicator coated with local hemostatic drug, on the applicator on the same side is installed ermetichny threaded connector, to which is connected an aerosol can with valve containing two-component mixture to create a self-expanding self-hardening polyurethane foam. The shell may be coated with a topical hemostatic drug.

The stopping of bleeding when using the proposed solution occurs due to the introduction of the applicator in an elastic stretchable shell with an attached aerosol can containing a two-component mixture (polyol mixture and isocyanate), which, when sprayed from an aerosol can and mixed between components, atmospheric air and moisture, has a high degree of polyurethane foam expansion with the ability to quickly harden (up to 15 minutes). The resulting polyurethane foam, expanding, creates sufficient pressure to compress capillaries, small, medium and large blood vessels, which helps to reduce and stop bleeding. Additional factors that help stop bleeding are the local hemostatic drug applied to the external surface of the stretchable elastic membrane and a sufficient amount of heat released during the exothermic process of the formation of polyurethane foam in the wound channel, which helps to accelerate hemostasis.

A utility model is illustrated in FIG. 1-4. In FIG. 1 shows a general view of a self-expanding shell swab. In FIG. 2 illustrates the use of a self-expanding shell swab to stop bleeding in the wound canal by introducing the tampon into the lumen of the wound canal and creating pressure on the surrounding tissues and blood vessels by expanding the polyurethane foam. In FIG. Figure 3 shows the immersion of a self-expanding membrane swab in the lumen of the wound canal and the detachment of the used aerosol can to form a polyurethane foam. In FIG. 4 shows the application of a pressure dressing over a self-expanding sheath swab in the lumen of the wound canal.

As shown in FIG. 1, the device comprises an aerosol can 1 with a two-component composition for the formation of a self-expanding quick-hardening polyurethane foam when spraying, a sealed threaded connector 2 for attaching the aerosol can 1 to the applicator. The applicator 4 contains a mushroom tip 3 of the applicator for applying fingers to create pressure on the valve of the aerosol can 1 and fix the elastic stretch shell 6. The hollow tubular applicator 4 for self-expanding foam 8 includes holes 5 for spraying the foam inside the elastic shell 6. The elastic stretch shell 6 is fixed to mushroom extension 3 of the applicator 4 due to its own elasticity and an additional elastic rubber ring 7. The shell 6 is covered with a local hemostatic drug th means.

The use of a tampon is as follows.

After performing urgent measures to stop bleeding (wound compression, application of a hemostatic tourniquet or turnstile), the applicator 4 and the stretchable elastic sheath 6 are removed from the sterile packaging. If necessary, the applicator 4 is cut to length, based on the expected depth of the wound channel. The aerosol can 1 with a two-component mixture 8 for the formation of spray polyurethane foam mixture is shaken vigorously for 30 seconds and attached to the connector of the applicator. While maintaining pressure on the wound or when a hemostatic tourniquet or tourniquet is applied, the applicator 1 in the elastic sheath is carefully inserted to the depth of the wound channel, after which two fingers are pressed on the mushroom head 3 of the applicator 4 to open the valve of the aerosol can 1 and release the contents into a stretch elastic sheath 6 .

The components of the mixture for the formation of foam, mixed together (two-component foaming composition), form in the lumen of the wound channel an expanding mass of polyurethane foam 8, which, expanding significantly over a short period of time, creates a pressure sufficient to compress the surrounding soft tissues, capillaries and blood vessels and stop bleeding.

The hemostatic effect is potentiated by a local hemostatic agent applied to the external strontium and by warming the surrounding tissues due to an exothermic reaction during foaming.

In FIG. Figure 2 shows the use of a self-expanding shell swab to stop bleeding in the wound canal by introducing a tampon into the lumen of the wound canal and creating pressure on the surrounding tissues and blood vessels by expanding polyurethane foam 7. Aerosol can 1 with a one-component or two-component composition for the formation of self-expanding, quick-hardening foam when sprayed 7 is installed in the area of the wound 8. When you click on the mushroom-shaped extension 3 elastic stretch shell 6, fixed 3 mushroom on expansion of the applicator 4 due to its own elasticity and the additional rubber ring, the formation of self-expanding polyurethane foam 7 inside the cavity of the wound channel a stretchable elastic shell 6.

Complete hardening of the expanded polyurethane foam 7 inside the wound channel occurs within 15 minutes. During this time, it is recommended to preserve the compression of the wound and the applicator 4 inserted into it with the polyurethane foam 7 formed inside the elastic elastic sheath 6 to prevent the bleeding and squeezing the applicator 4 out again under the action of the expanding polyurethane foam 7. After 15 minutes, the pressure on the wound and hemostatic turnstile is relieved (if applied) with constant monitoring of hemostasis.

In FIG. 3 shows the immersion of a self-expanding membrane swab in the lumen of the wound channel 8 and the detachment of the used aerosol can to form a polyurethane foam. Disconnect the used aerosol can 1 with a two-component composition to form a self-expanding quick-hardening polyurethane foam 7. When connecting the aerosol can, the connector 3 is fixed by hand in the wound channel 8. The aerosol can 1 is carefully unscrewed from the connector 3 of the applicator and removed (stored for future use or )

In FIG. 4 shows the application of a pressure dressing over a self-expanding sheath swab in the lumen of the wound canal. After introducing a self-expanding membrane swab into the wound channel 8, hardening the foam and stopping or significantly reducing bleeding over the wound 8, a sterile absorbent wipe 9 is applied over the mushroom cap 3 of the applicator 4 and a pressure bandage 10 is made from an elastic go ordinary bandage over an absorbent wipe. After the victim is delivered to the place of medical care, the frozen polyurethane foam inside the elastic tensile sheath 6 is removed during surgical treatment of the wound while controlling hemostasis. The mushroom cap 3 of applicator 4 is used to remove the tampon from the wound canal by hand.

The advantage and difference of a self-expanding shell swab for stopping bleeding from wound canals over analogues is:

- the technical impossibility of reducing the created pressure on soft tissues and blood vessels by expanded and hardened polyurethane foam, which eliminates the accidental removal of the applied pressure;

- the possibility of uniform application of pressure in all directions relative to the cavity of the wound channel at any depth of the wound channel;

- increased hemostatic effect due to contact with a hemostatic drug deposited on the elastic membrane of a self-expanding swab and due to the release of thermal energy during the exothermic foaming reaction;

- reliable fixation of the self-expanding shell swab in the wound channel due to the implementation of the entire form of the wound cavity and elastic stretching of the soft tissues adjacent to the wound;

- the possibility of applying pressure to the wound and transmitting pressure to the entire depth of the wound channel through the installed self-expanding swab;

- the possibility of using a self-expanding swab in a significant range of ambient temperatures, in a humid atmosphere, in the rain, in strong winds and snowfalls;

- use in the design of the tampon many standard commercially available components available.

Claims (2)

1. A self-expanding shell swab for temporarily stopping bleeding in the wound canals, containing an elastic tensile sheath, characterized in that the sheath is fixed on one side of the polymer hollow tubular applicator with a hole on the free slice provided with a perforation and mushroom tip for attaching an elastic tensile sheath around the applicator, on the applicator, on the same side, a sealed threaded connector is installed, to which an aerosol can with a valve containing two omponentnuyu mixture to create a self-expanding self-hardening polyurethane foam. 2. A tampon according to claim 1, characterized in that the membrane is coated with a local hemostatic drug.

Images