RU100396U1 - DRAINAGE DIALYSIS DEVICE FOR ANIMALS - Google Patents

Abstract

 A drainage dialysis device, including a membrane capsule with a dialysis solution installed in the infected cavity, equipped with two tubes with plugs - a lead for introducing a dialysate solution and a drain for removing the spent solution, characterized in that a plastic retainer is installed to hold the device in the cavity at the upper end of the membrane capsule , longitudinally cut into ribs and covered with a protective sleeve, while the inlet and outlet tubes are equipped with screw caps and races olozheny at opposite ends of the capsule membrane, and to install the device in the infected cavity is provided with the guide-needle.

Description

The utility model relates to veterinary medicine, in particular to veterinary surgery, and can be used to treat infected wounds and purulent-necrotic processes with the formation of purulent cavities in the tissues of cattle and small cattle, horses.

In veterinary medicine, methods for draining the purulent cavities of soft tissues using various devices (rubber and PVC tubes of various sizes and diameters, gauze swabs) are known, a significant drawback of which is low efficiency [1].

When using a rubber soft tube, the discharge flows under the action of gravity along the surface of the drainage [1]. The method is widely used in veterinary surgery, however, it does not provide constant stable diffusion of drugs into the affected tissue and requires additional laborious fixation of the rubber tube with a surgical suture.

The method of drainage with corrugated tubes is intended only for the discharge of pus [1].

The method of draining with a gauze swab soaked in solutions of salts, antiseptics, or proteolytic enzymes is based on capillary diffusion [1, 2, 3]. However, the drains are effective for 2-4 hours, then they should be removed, as they prevent the excretion and become a source of intoxication [2]. To maintain optimal conditions, their regular replacement is necessary, which is extremely traumatic for the animal and leads to disruption of reparative processes in the wound.

A known method of ring drainage, intended only for passive removal of discharge from the wound [1]. In addition, when the animal moves, the external non-sterile part of the ring moves into the wound cavity and its further infection.

Vacuum drainage methods are also known in which the discharge is sucked out by creating a reduced pressure inside the system [1]. However, the use of bulky external devices and energy-intensive equipment impedes the implementation of drainage in farm animals. In addition, the entry of drugs into the wound is not provided.

The known method of wound dialysis, based on the selectivity of the action of a semipermeable membrane [4]: on the one hand, it provides a stable diffusion of various drugs in the body tissue, and on the other - removes toxic products. The method consists in laying a capsule from a semipermeable membrane filled with a highly osmolar dialysate solution at the bottom of the wound. The method is widely used in various fields of surgery, but is not used in veterinary medicine, as devices adapted for animals have not been developed that reliably hold membrane capsules in the wound cavity.

Closest to the proposed model in technical essence is a device for drainage of wounds [5], containing a membrane of a semipermeable membrane filled with a medicinal solution laid on the bottom of the wound. The free end of the shell is fixed with a rubber sleeve and a clamp, and the sleeve is equipped with two tubes - inlet and outlet. The opposite end of the capsule is knotted. The device is held in the wound with a bandage. The inlet and outlet tubes with cannulas for connecting a syringe are brought to the surface of the dressing, which are closed with rubber plugs during fractional replacement of the dialysis solution.

The drug solution is injected through the supply tube with a syringe - with fractional replacement of the solution or from a dropper - with a flow system.

A known device intended for use in surgery is cumbersome and not applicable to farm animals.

The objective of the utility model is to create a reliable, non-traumatic drainage dialysis device for animals, which provides effective dialysis of infected wounds and purulent cavities.

The objective is achieved by the fact that the drainage dialysis device includes a membrane capsule with a dialysis solution installed in the infected cavity, at the opposite ends of which there are tubes with screw caps - inlet for introducing a dialysate solution and outlet for removing the spent solution. To hold the device in the cavity at the upper end of the membrane capsule is a plastic retainer, longitudinally cut into the ribs, and covered with a protective sleeve. To install the device in an infected cavity, it is equipped with a guide pin.

Figure 1 shows a drainage dialysis device prepared for insertion into the cavity; figure 2 - device during dialysis. The device comprises: a capsule (1) from a semipermeable membrane; two pyrogen-free elastic tubes (2), (3) with screw caps (4), (5) at the ends - a supply pipe (2) for introducing a dialysate solution with a plug (4) and a discharge pipe (3) for removing the spent solution with a plug (5); a plastic cylindrical retainer (6), longitudinally cut into the ribs and covered with a protective plastic sleeve (7), and a guide pin (8) for installing the device in the cavity with the possibility of movement along the axis of the device.

The principle of operation of the drainage dialysis device is based on the constant flow of drugs into the wound cavity by diffusion through the pores of the cellulose membrane and the removal of toxic products from the wound to the outside.

All structural elements of the device are made of pyrogen-free non-toxic materials, which allows you to leave the drainage device in the tissues of the animal for 5-7 days.

Drain dialysis device operates as follows.

As a semipermeable membrane, a cellulose tubular membrane used in the food industry is used, with an outer diameter of 20-40 mm, a pore diameter of 1.5-3.0 nm and a length of 50-300 mm, depending on the size of the wound cavity of the animal. At the opposite ends of the cellulose tubular casing, pyrogen-free polyvinyl chloride tubes are introduced — a supply tube (2) and a discharge tube (3) with screw caps (4) and (5). Tubes (2) and (3) are hermetically fixed with a cellulosic shell with pierced silk ligatures and two rubber rings. A closed membrane cavity is formed - a capsule (1). A clamp (6) is tightly put on the upper end of the supply tube (2), made of a polypropylene cylinder that is longitudinally incised on the ribs. The retainer ribs are bent up and pressed with a protective plastic sleeve (7). A guide pin (8) is inserted into the lower end of the outlet tube (3) until it stops against the inside of the plug (4). After performing a revision of the wound and contraperture incisions, the device is quickly inserted through the lower contraperture and removed through the upper contraperture to the level of fixation of the latch. The protective sleeve (7) is removed, releasing the ribs of the retainer (6), which are radially straightened due to the elastic properties of polypropylene, taking a direction transverse to the cut. Then, the guide pin (8) is removed from the lower end of the device and the plug (5) is screwed on the outlet tube (3). The lower section of the cellulose membrane should protrude 10-20 mm beyond the edges of the cut. The dialysis solution is introduced into the membrane capsule (1) of the device through the upper supply tube (2) using a syringe. After filling the device with a medicinal solution, a plug (4) is screwed on the supply tube (2). The drainage device is left in the tissues of the animal for 5-7 days. Dialysis solution is replaced once a day.

Upon reaching a positive result of treatment, the drainage device is removed by cutting off the protruding upper part of the membrane at the level of the edges of the wound and pulling the drainage immersed in the tissue through the lower counter-opening.

The effectiveness of treatment with the use of a drainage dialysis device is judged by a change in the general condition of the animal, a decrease in swelling, a decrease in intoxication, the disappearance of functional disorders, and a change in laboratory data.

Technical result:

- ease of installation and reliability of fixation, which prevents displacement and accidental loss of the device from the wound of the animal;

- the ability to conduct therapeutic measures without disturbing the peace of the wound and without delivering painful sensations to the animal;

- effective cleansing and detoxification of the pathological focus with minimal contraperture incisions;

- lack of special energy-intensive equipment. The device was developed taking into account the physiological and behavioral characteristics of cattle and small cattle, horses. The device is compact, economical, reliable in operation and can be used in a veterinary clinic, livestock complex and field conditions.

Information sources

1. Shebits X., Brass V., Operative surgery of dogs and cats. - Moscow: Aquarium, 2005. - P.91-92.

2. Lebedeva A.V., Lukyanovsky V.A., et al. General Veterinary Surgery. - Moscow: Colossus, 2000 .-- C.117-118.

3. Plahotin M.V., Handbook of Veterinary Surgery.- Moscow: Colossus, 1977, S. 43-44.

4. Grakov B.S., Selezov E.A., Shvetsky A.G. Semi-permeable membranes in the treatment and prevention of surgical infection. - Krasnoyarsk: Publishing House of the Krasnoyarsk University, 1988).

5. Copyright certificate of the USSR. A method for treating infected wounds. SU 1050679. Publ. 10.30.83.

Claims (1)

A drainage dialysis device comprising a membrane capsule with a dialysis solution installed in the infected cavity, equipped with two tubes with plugs - a lead for introducing a dialysate solution and a drain for removing the spent solution, characterized in that a plastic retainer is installed to hold the device in the cavity at the upper end of the membrane capsule , longitudinally cut into ribs and covered with a protective sleeve, while the inlet and outlet tubes are equipped with screw caps and races olozheny at opposite ends of the capsule membrane, and to install the device in the infected cavity is provided with the guide-needle.