RU146620U1 - SYSTEM FOR THROUGH WASTE DRAINING OF RAS AND CAVITIES - Google Patents

Abstract

A system for through drainage of cavities and wounds, consisting of perforated drainage tubes, one of which is connected to the solution supply means by means of couplings, and the other is connected to the aspiration means, characterized in that the system consists of three perforated tubes of different diameters, welded together avoidance of displacement of the tubes relative to each other; the first tube, with the largest clearance, is intended for aspiration of the wound discharge; its ends are interconnected with an aspiration device with a tee with a switch, which can be installed in two positions depending on the direction of washing the wound; the second tube, parallel to the first tube and soldered with it throughout, has a smaller diameter and is designed to feed the solution into the wound; at its ends there are couplings for connection with means for supplying solutions; the third air supply tube, located in the lumen of the first tube and welded to its wall, has the smallest diameter and contains perforations smaller and smaller than the first tube, in order to avoid large losses of negative pressure in the first tube; the ends of the third tube exit the lumen of the first tube through sealed openings and communicate with the external environment.

Description

The utility model relates to medicine, in particular to surgery, and is intended for drainage of purulent cavities of the abdominal cavity and retroperitoneal space.

A device for through drainage of cavities and wounds, containing a tube of elastic material with perforation at the work site. The tube is made with a gradually increasing diameter from the middle of the working section to the ends of the tube. Inside the drainage there may be turunda made of hygroscopic material (for example, gauze, carbon, etc.) which can be impregnated with a water-soluble ointment (for example, Levomikol), the tube can be made with screw corrugations on the surface (1).

The disadvantages of this device are:

- uneven diameter of the tube along its length. The decrease in diameter, and as a result, the cross-sectional area to the middle of the working section of the tube leads to a decrease in its clearance, the number and size of perforation holes in its working part. This leads to a decrease in the efficiency of drainage of surgical wounds due to impaired outflow of purulent discharge and sequestration along the drainage tube due to clogging of perforations. On the other hand, the increasing diameter of the tube from its middle to the ends does not give visible advantages over drainage with a single diameter, since the throughput and efficiency of the drainage as a whole is determined by the design of its working part. In addition, with an increase in the diameter of the tube as you move away from the middle part, the risk of developing pressure sores increases. Removing this tube will be technically more difficult due to the passage of its wider part through the formed wound canal or cavity, where part of the tube of a smaller diameter was located, the morbidity of this manipulation increases;

- the use of turundas made of hygroscopic material will require more frequent manipulations with drainage to replace them, otherwise they will begin to play the role of plugs;

- screw corrugations of the drainage injure the surrounding tissue when the drainage is displaced, replaced or removed, which is fraught with complications;

- Inadequate drainage of the cavity due to the suction effect.

Known drainage device, consisting of two elastic tubes with side holes, one of which is a direct outlet, the second, a smaller diameter, curved screw-like, inlet. The inlet tube is made in the form of a coil spring and is wound onto the outlet spring with a gap, while the tubes are connected in series through a hollow adapter. There is a longitudinal airway tunnel in the wall of the outlet tube. Side holes in the inlet tube are located on its inner surface facing the outlet tube (2).

The disadvantages of this device are:

- inadequate drainage in the area of the end of the drainage;

- non-through type of drainage of cavities and wounds;

- the lead tube, made in the form of a cylindrical coil spring, injures the surrounding tissue when the drainage is displaced, replaced or removed, which is fraught with complications;

- the impossibility of changing the drainage along the conductor.

A device is known, a universal combined suction-non-suction drainage, consisting of a narrow tube and a wide tube that are inserted into each other, and the narrow tube is made with the possibility of tight installation in a wide tube due to the clamp, which is a tight-fitting ring worn on a narrow tube, and with the ability to remove from a wide lumen of the tube, while the wide tube has internal perforations deposited along the length of the corresponding drained cavity, and the clamp has longitudinal through channels, or a wavy shape, or another version of its design, which facilitates the flow of atmospheric air through the clamp (3).

The disadvantage of this device is the through type of drainage of cavities and wounds.

A known device for drainage, made with the possibility of modeling on the surface of purulent formations, containing drainage perforated catheters with a means of supplying antiseptic solutions and a means of aspiration of purulent exudate. It additionally includes a sleeve connected to the means for supplying antiseptic and therapeutic solutions, connected on the other hand to a perforated catheter, inside of which a flexible wire is fixed, attached to the sleeve, allowing the catheter to be modeled on the surface of the purulent formations, as well as a second sleeve connected to the suction means purulent exudate, connected on the other hand with a perforated catheter, inside of which is a flexible wire fixed to a second sleeve, allowing modeling catheter on the surface of purulent formations (4).

The disadvantages of this device are inadequate drainage of the cavity due to the suction of surrounding tissues to the walls of the drainage perforated catheters; the elastic design of the simulated device increases the risk of bedsores, complications when the device is displaced, replaced or removed; the inability to change the direction of washing the wound without changing the design of the device. This device is taken as a prototype.

The purpose of the development of a utility model is to create a system for drainage of cavities and wounds, which allows for the most effective and adequate rehabilitation, to reduce the likelihood of complications of drainage, to increase the safety of displacement or removal of the system.

This goal is achieved by the fact that the presented system consists of three perforated tubes of different diameters, welded together to avoid displacement of the tubes relative to each other; the first tube, with the largest clearance, is intended for aspiration of the wound discharge; its ends are interconnected with an aspiration device with a tee with a switch, which can be installed in two positions depending on the direction of washing the wound; the second tube, parallel to the first tube and soldered with it throughout, has a smaller diameter and is designed to feed the solution into the wound; at its ends there are couplings for connection with means for supplying solutions; the third air supply tube, located in the lumen of the first tube and welded to its wall, has the smallest diameter and contains perforations smaller and smaller than the first tube to avoid large losses of negative pressure in the first tube; the ends of the third tube exit the lumen of the first tube through sealed openings and communicate with the external environment.

Comparison of the proposed system with others known in the field of medicine shows its compliance with the criteria of a utility model.

The utility model is illustrated by graphic material. The figure 1 shows the proposed system. The first tube (1) with the largest clearance is connected via a tee (2) to a switch (3) with an aspiration device (4). The second tube (5), of smaller diameter, is connected to the means for supplying solutions (7) using couplings (6). The third tube (8) for supplying air is installed in the lumen of the first tube; its ends exit the lumen of the first tube through sealed openings (9) and communicate with the external environment.

The system is used as follows.

The system, consisting of three tubes welded together with perforations, is installed in the drained wound (10) during the operation so that the perforations of the system are located directly in the wound cavity, which must be drained, and the ends of the system are brought out through two contrapertures (11 ) Through the sleeve (6) to one of the ends of the second tube (5) is attached a means of supplying the solution (7), which is necessary for washing the wound. The ends of the first tube (1) are interconnected with an aspiration device (4) by a tee (2) with a switch (3), which can be installed in two positions depending on the direction of washing the wound. In one position, aspiration is performed through one end of the first tube (1), while the second end overlaps; in another position - on the contrary, one gap is blocked and the second opens. This allows washing the wound in two directions. If the perforation holes of the first tube (1) are closed by the walls of the wound (10) or its contents along the third tube (8), due to the increased negative pressure, air begins to flow more intensively from the external environment. This leads to a decrease in increased pressure, and thereby to a decrease in tissue suction to the first tube (1).

Example 1. Patient N., 39 years old, operated on for pancreatic necrosis, had intensive conservative therapy and flow-through washing of the stuffing box with antiseptic solutions in the postoperative period using our proposed system for through drainage of wounds and cavities. After 15 days of flow washing, after termination of washing of sequestration, the stuffing bag was washed twice a day for another 7 days. During the flushing of the system, the perforations of the first tube were closed several times by surrounding tissues. In these cases, the drainage system was freely displaced to one or the other side by 3-5 cm, due to the lack of suction of tissues to the tube, and washing was continued. During the treatment, the patient did not experience any complications associated with the use of the drainage system. The system was removed 22 days after surgery. As a result of the treatment, the phenomena of pancreatitis were stopped, which is confirmed by clinical, instrumental and laboratory studies. The patient was discharged for outpatient treatment in satisfactory condition.

The technical result of creating a system for through drainage of cavities and wounds is to increase the efficiency and adequacy of its drainage, reduce the likelihood of complications, increase the safety of displacement and removal of the system.

This device can be widely used in medical hospitals and specialized medical centers.

INFORMATION SOURCES:

1. RF patent for utility model No. 52568 “Drainage for through drainage of cavities and wounds” dated 10.04.2006.

2. RF patent for utility model No. 42957 "Drainage device" dated 12/27/2004.

3. RF patent for utility model No. 2292922 "Universal combined surgical drainage" dated 10.02.2007.

4. RF patent for utility model No. 2381816 "Device for drainage, made with the possibility of modeling on the surface of purulent formations" from 02/20/2010

Claims (1)

A system for through drainage of cavities and wounds, consisting of perforated drainage tubes, one of which is connected to the solution supply means by means of couplings, and the other is connected to the suction means, characterized in that the system consists of three perforated tubes of different diameters, welded together avoidance of displacement of the tubes relative to each other; the first tube, with the largest clearance, is intended for aspiration of the wound discharge; its ends are interconnected with an aspiration device with a tee with a switch, which can be installed in two positions depending on the direction of washing the wound; the second tube, parallel to the first tube and soldered with it throughout, has a smaller diameter and is designed to feed the solution into the wound; at its ends there are couplings for connection with means for supplying solutions; the third air supply tube, located in the lumen of the first tube and welded to its wall, has the smallest diameter and contains perforations of a smaller size and in a smaller quantity than the first tube, in order to avoid large losses of negative pressure in the first tube; the ends of the third tube exit the lumen of the first tube through sealed openings and communicate with the external environment.

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