SU1725921A1 - Device for treating infected wounds - Google Patents

Abstract

The invention relates to medical technology and can be used in traumatology and orthopedics, as well as in purulent surgery. The goal is to increase the effectiveness of treatment due to the effect of additional therapeutic factors on infected wounds. The device contains a flexible pull 1 with balls 2 fixed on it from a solid polymer bioinert material. The surface of the balls has antiseptic properties. New is that the device is equipped with an adjustable DC source and a passive electrode; The surface of the balls, possessing antiseptic properties, is formed by sections from donor metal trace elements. All metal sections are connected to a conductor placed inside the rod. The conductor is connected to the positive terminal of the current source. 4 sludge. (Ls

Description

This invention relates to medicine, namely to traumatology and orthopedics, as well as to purulent surgery.

A device for treating infected wounds is known, containing silver wire connected to a direct current source.

However, this device has drawbacks: it is traumatic; there is no possibility of uniform provision of all wound sites with an antimicrobial agent and there is no possibility to influence additional therapeutic factors.

Closest to the present invention is a device for treating infected wounds, containing a flexible rod with balls fixed on it from solid polymeric bioinert material treated with an antiseptic agent.

The disadvantage of the device is the absence of the possibility of exposure to additional therapeutic factors.

The purpose of the invention is to increase efficiency by affecting infected wounds with additional therapeutic factors. -..-.

The goal is achieved by the fact that the device for treating infected wounds, containing a flexible rod with balls of solid polymeric bioinert material fixed to it, with a surface possessing antiseptic properties, is equipped with an adjustable DC source and a passive electrode, the surface of balls possessing antiseptic properties, formed by sites of bactericidal metals, which alternate with sites of donor metals of microelements, all metal sites of compounds with conductor, placed inside the rod and connected to the positive terminal of the current source.

FIG. 1 shows schematically a device in an infected bone cavity, general view; in fig. 2 — device in an infected wound of soft tissues; in fig. 3 - device, general view; in fig. 4 - electrically conductive part of the device with sections of bactericidal metals With alternating sections of donor metals of trace elements.

The device for treating infected wounds consists of an adjustable DC source, to the positive pole of which a thin and flexible electrically conductive cable 1 is connected with balls 2 fixed to it, made of bioinert polymeric material, for example polycarbonate siloxane, etc. 0.8 mm or more is made, for example, of electrically conductive sections in the form of a bundle of thin wires covered with a bioinert polymer film. Each section of wire (s) is also insulated from the adjacent section by a similar film. In one cable 1 can be from 2 to 4 - 5 or more sections. On the section of the cable 1, where balls 2 are placed,

0 This insulating film is not outside the cable 1.

Balls 2 are made of solid polymeric bioinert material (for example, polycarbonate siloxane, etc.) and

5 are placed on those sections of the cable, to which silver and copper sections 3, as well as sections 4 are connected, using electrically conductive inserts 5. Thus, the balls 2 form a sort of protective core-solid

0 case - for fragile electrogenerated and electrically conductive parts of the device, namely sections 3 and 4 and inserts 5, and prevent them from mechanical damage, as well as fix sections 3 and 4 in one and

5 of the same position.

The device is made in the form of balls 2 and their mobility due to the flexibility of the cable 1 is necessary for the possibility of unimpeded movement through any twisted fistulous and other bone paths into the wound and then optimal placement and modeling of the device in it regardless of the wound relief and its configuration adhesions, etc. Sizes of balls 2 and

The distances between them can be different and depend on specific requirements: the size of the wound, its bacterial dissemination, the shape and topography of the wound cavity.

0 Balls 2 in the same device can have the same dimensions, but they can also have different sizes and relief of the surface of the ball. For example, the ball may have an oval shape, a rough surface in the form of a bunch of grapes, which allows placing on the surface of the ball 2 a large number of areas 3 and 4 to enhance the antimicrobial and therapeutic effect of the device.

0 Sections 3 can be made of thin copper and thin silver plates, for example, in the form of inlaid hoops on the surface of a ball 2. The number of sections 3 can vary from 1-3 to 5-6

5 or more / Sections 4 are also stationary and diffusely located on the surface of the ball 2. These sections contain various trace elements. Different devices contain a different set of trace elements, which is selected depending on the stage of the wound process, the characteristics of the anatomical localization of the wound, the type of infectious process, the phase of inflammation.

Trace elements are applied to areas with 4 different methods (electrochemical deposition, vacuum deposition, etc.).

The number of sections 4 can be from 2-3 to 20 and more depending on the number of types of trace elements used (manganese, molybdenum, zinc, cobalt, etc.). In order to reduce the number of sections 4, during their manufacture, on one conductive plate (section 4), electrochemically related trace elements can be placed near islands, dissolving In the medium at the same mode of electric current, in particular, at the same current density. This takes into account the quantitative needs of these trace elements in the wound. ...

All sections 4, as well as sections 3, are connected to the electrically conductive sections of the cable 1 by means of electrically conductive inserts 5. By means of the inserts 5, the sections 3 and 4 become electrically adjustable. The electrochemical dissolution of the corresponding trace element or bactericidal metal depends on the generated current density in sections 3 and 4. Therefore, the specific current density depends on the specific electrochemical properties of an individual microelement.

A device for treating infected wounds is used as follows.

The wound is loosened or a soft tissue or osteomyelitis cavity is surgically treated. After that, a device of suitable size and length is selected and placed in an infected wound so that it fills the wound cavity (bone or soft tissue). After that, the wound is sewn up in layers, and the end of the cable 1 through a separate opening is brought out and connected to the positive terminal of the adjustable DC source. The device is in a wound for 3-4 to 10 days or more. The source of direct current is fixed on the patient, who works during the whole

the dwell time of the device in the wound with a certain interval (the current source is regulated by the doctor), using a microammeter regularly check the current strength at the poles of the galvanostat and set it to the optimum values. After the end of treatment, the galvanostat (current source) is disconnected, and the device is removed from the wound through the opening by pulling it over the end of the cable. A sterile dressing is applied to the opening until the wound is completely healed.

Other embodiments of the device are possible in which sections 3 and 4 are made of galvanic couples inducing ions of the corresponding metals and trace elements.

The proposed device is well tolerated by the patient, does not injure the wound, does not cause inconvenience to the patient. The duration of treatment of infected wounds is reduced by 1.5-2 times.

The device should be used in the treatment of infections of soft tissues (after opening phlegmon, abscesses), bones (osteomyelitis, infected bone cavities), joints (purulent arthritis) in surgery of the thoracic and abdominal cavities.

Claims (1)

Invention Formula Device for treating infected wounds, containing a flexible rod with balls of solid polymeric bioinert material fixed on it with a surface having antiseptic properties, characterized in that, in order to increase efficiency due to the effect of additional therapeutic factors, it is equipped with an adjustable direct current source and a passive electrode, the surface of the balls, which has antiseptic properties, is formed by sections of bactericidal metals that alternate with sections of donor-containing metals, all metal sections are connected to the electrical power supply, placed inside the rod and connected to the positive terminal of the current source. .