RU179861U1 - Wound dressing - Google Patents

Abstract

A vacuum dressing for treating wounds refers to medical equipment, namely, devices designed to treat purulent and necrotic wounds. A vacuum dressing for treating purulent wounds, consisting of a drainage tube, a surgical sterile film, a mechanical block for applying reduced pressure, characterized by elastic elastic sterile a camera, staggered holes at the end of the drainage tube, and a mechanical block for applying reduced pressure. As a result of creating a reduced yes Lenia wound is expressed in a complex positive effect on the course of disease: edema is reduced, improving local circulation, reduced bacterial load, accelerates healing.

Description

A useful model for treating wounds relates to medical equipment, namely, devices designed to treat purulent and necrotic wounds.

Purulent wounds are formed in various pathological conditions: injuries, burns, frostbite, open skull injuries and other diseases, especially with concomitant pathology [6].

To date, surgical infections of the skin and soft tissues (ICMT) remain the area of surgery, which is paid little attention by specialists of both the outpatient and inpatient units. The significance of the problem is emphasized by the fact that in the structure of primary referral to a general surgeon, their frequency reaches 70%. In the structure of nosocomial infections, the frequency of surgical infections of soft tissues (postoperative suppuration, post-injection complications, etc.) reaches 36%, in Russia - 24%. Infections of the skin and soft tissues are the most common reason for patients seeking surgical care: for example, in the UK they make up 10% of hospital admissions, and in the United States, ICMT cause 330,000 hospital admissions per year. According to expert estimates, this pathology is observed in approximately 700 thousand patients annually in the Russian Federation. The importance of this problem may be evidenced by the fact that mortality in diseases such as necrotic infections reaches 50 percent or more [4, 5]

The level of technology. One of the new methods used in the treatment of purulent wounds is the local long-term use of reduced pressure (technical vacuum or subatmospheric pressure), which is created and maintained by a vacuum system.

The analogue of the British production of SMITH AND NEFU PLC Company “device and method for treating wounds with negative pressure” (patent RU 2582866 from 12/22/2010) is a sealed coating material, a piping system for applying reduced pressure and for the outflow of exudate, as well as an electronic unit for applying reduced pressure. The disadvantage of this device is its high cost, expensive repairs and consumables, volatility, mainly stationary use.

There is a "device for aspirating liquids and / or particles from the openings of the body" (patent No.RU 2581494 dated 02.20.17) of the German company MAKVET GMBH UND KO, which consists of a suction channel and a reduced pressure application unit. The disadvantage of this device is the narrow focus for draining only wound openings in the human body and the inability to treat extensive wounds, in addition, the possibility of only stationary use.

For the prototype, the authors took the device of the British company SMITH AND NEFU PELSi "wound dressing" (patent number RU 2560973 from 04/21/2011). This dressing consists of directly sealed coating material, a piping system and an electronic unit for applying reduced pressure. A significant drawback of this device is the lack of a reservoir for collecting drainage contents, as a result, the exudation is evacuated directly into the spongy material of the coating material, which contributes to infection and contamination of the wound. In addition, the use of a spongy substance as a covering material for a wound will lead to an increase in the frequency of dressings, as well as energy dependence and stationary use.

Disclosure of the essence of the utility model. The device consists of:

- a mechanical block for applying reduced pressure (1) made of transparent polymeric materials (GOST ISO 7886-1-2011), whose length is 165 mm, diameter 20 mm, it has two check valves (2) and a crane (3) made from polymeric material;

- a drainage elastic sterile chamber (4), the elasticity of which creates a maximum lowered pressure equal to 75 mm Hg, having a corrugated structure made of PVC with a volume of 400 ml, this pressure creates the most optimal therapeutic effect on the wound to stimulate local circulation;

- a drainage tube (5) made of transparent medical thermoplastic polyvinyl chloride, with a perforated section having 48 holes staggered, with a diameter of 1 mm, an inner diameter of 3 mm, and a wall thickness of 1 mm. (GOST 19034-82) Additional openings contribute to a better outflow of exudate from the bottom of the wound (6);

- two-layer sterile gauze napkins (7) made of gauze according to GOST-9412;

- surgical sterile films (8) for closing a wound defect, possible sizes: 200 × 300 mm, 250 × 280 mm, 300 × 400 mm, 300 mm × 450 mm, 450 × 550 mm, 450 × 600 mm. The size of the surgical film is selected in accordance with the size of the wound defect, an adhesive layer based on polyacrylate adhesive. Transparent, ultra-thin, strong, elastic, easily extensible and soft polymer (polyurethane) film.

The film is glued to the wound, the edges of which are treated with disinfectants, is tightly fixed and completely repeats the relief of body parts, which eliminates the sticking of the film along the edges of the incision, provides comfortable use. The polyacrylate adhesive layer is suitable for normal and sensitive skin, without causing allergies and irritation when using an operating coating, adheres well and is easily distributed at the place of application.

The polymer film is impervious to water and bacteria, prevents the ingress of microorganisms from the skin into the wound.

A vacuum dressing for the treatment of wounds is made of materials that are not pyrogenic and toxic (GOST 24861-91). The single use will eliminate the risk of infection, helps to save dressings, accelerate the healing of patients, the high efficiency of the therapeutic effect, create the most comfortable conditions for the patient, since this dressing can be used on an outpatient basis.

Under the influence of the pressure difference, the exudate comes from the wound, through the drainage tube brought to it, into the sterile drainage chamber.

The effects of using the utility model are: active removal of wound exudate, preservation of a moist environment in the wound, reduction of bacterial contamination of the wound, increased local blood circulation, reduction of the area of the wound. All this contributes to the speedy healing of wounds.

Implementation of a utility model.

The application of a vacuum dressing is as follows. Before applying the vacuum dressing, the wound (6) is thoroughly washed and dried, a sterile napkin (7) is laid strictly on the wound surface, pressed tightly to its bottom. Further, the drainage tube (5) is drawn through the thickness of the prepared sterile wipe.

Surgical sterile film (8) for isolating the surgical field sequentially, as it adheres to the skin, it is released from the protective layer. The film is hermetically applied to the skin around the wound. Further, by acting on the mechanical unit to create a reduced pressure (1), an optimal pressure is created under a sealed dressing. Air in the wound is pumped out and sent to the external environment by means of a check valve (2). The necessary pressure in the wound is created only after complete spontaneous compression of the drainage elastic sterile chamber (4). A vacuum of 75 mmHg is created. To disconnect the mechanical unit (1), the valve (3) is closed. Additionally, the bandage is fixed with a gauze bandage. If necessary, the connection of a mechanical unit (1) is allowed. All of these components make up a single functioning system, the single purpose of which is the treatment of wounds.

Bibliographic list:

1) Device and method for treating wounds with negative pressure. Patent No.RU 2582866 of December 22, 2010

2) A device for aspirating liquids and / or particles from the openings of the body. Patent No.RU 2581494 of 02.20.17.

3) Wound dressing. Patent No.RU 2560973 dated 04/21/2011

4) Obolensky V.N., Semeny A.Yu., Nikitin V.G., Sychev D.V. Vacuum therapy in the treatment of wounds and wound infections // breast cancer. 2010. No.17. S.1064

5) Derbenev V.A., Nabiev A.F., Steshin A.V., Kuleshov I.Yu. Extremely high-frequency and laser therapy in the treatment of patients with purulent wounds of soft tissues // Laser medicine. 2010. No3. S. 8-11.

6) Busoedov A.V., Verevkina T.Yu. Sorption therapy in patients with purulent wounds // Actual problems of modern medicine. 2016.S. 124-126.

Claims (1)

A vacuum dressing for the treatment of purulent wounds, consisting of a drainage tube, a sterile surgical film, a mechanical block for applying reduced pressure, characterized by a sterile elastic drainage chamber, checkerboard holes on the end of the drainage tube, and a mechanical block for applying reduced pressure.

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