RU2336912C1 - Drainage device - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention concerns medicine, in particular to surgery, and can be used in treatment of open wound cavities of soft tissues. The drainage device includes a capacity with antiseptic, capacity for the flushing water, supply tube connecting the antiseptic capacity with a wound cavity, outlet tube and an air tube, with one end connected to the capacity with the antiseptic. The mentioned air tube is connected by other end to the basis of a rubber bag on which the supply tube is established. On the end of the rubber bag the elastic tube which is established in the capacity for flushing water is fixed in such a manner that liquid level would close access of air to the tube.

EFFECT: provision of supply of the antiseptic solution in open wound cavity, and also constant active outflow of flushing water from the drained wound cavity.

2 cl, 1 dwg

Description

The invention relates to medicine, in particular to surgery, and can be used in the treatment of open wound cavities of soft tissues.

Known active open flow-washing antibacterial drainage intended for the treatment of purulent cavities [1]. The drainage contains two pyrogen-free PVC pipes of various diameters. An antiseptic solution enters the purulent cavity through the inflow tube, and the second tube serves to drain the purulent flush. However, the known device cannot provide an effective outflow of flushing fluid, since it is carried out by gravity, under the action of gravity of the fluid itself. In this case, due to passive outflow of fluid from the open purulent cavity, the outlet tube becomes clogged with exudate particles, which leads to an increase in pressure in the cavity itself caused by the antiseptic solution flowing into it.

Also known is antibacterial drainage with a double-lumen tube with vacuum aspiration [1], which provides programmed washing of purulent postoperative wounds with an antiseptic solution with simultaneous dosed vacuum aspiration of purulent flushing. Aspiration is carried out using a vibrator designed on the basis of a vibrocompressor. However, the known drainage device is energy-intensive and is designed to flush only hermetically sealed purulent cavities.

Closest to the proposed device by technical essence is a device [2] for drainage of purulent cavity wounds (open cavities), which provides for active flow-aspiration drainage, containing a reservoir with antiseptic solution, an exudate collector, a leading tube connecting the reservoir with the wound cavity, aspiration a tube connecting the wound cavity to the collector, while the device is further provided with a connecting tube connecting the reservoir to the collector. However, the known device cannot provide effective drainage of open wound cavities, because the drainage process takes place cyclically and depends on the influx of an antiseptic into the wound cavity, while the washing fluid with air enters the exudate collector, and when air from the open wound cavity enters the exudate collector, the vacuum in it falls and to create it again, a certain time. At this time, the antiseptic solution enters the wound cavity, while the wound cavity is overflowed with the antiseptic solution, and due to the lack of dilution in the exudate collector, constant active aspiration of the washings does not occur.

The objective of the proposed drainage device is to ensure active permanent rehabilitation of open wounds and cavities.

The task is carried out due to the fact that the air tube with the other end - the lower one, is connected to the base of the rubber bulb, on which the outlet pipe is mounted, while at the end of the rubber bulb the elastic tube is fixed, which is installed in the tank for washing water so that the liquid level blocked the access of air to the tube, while the supply and air tubes are equipped with clamps.

The invention is illustrated in the drawing.

The drawing shows a diagram of the proposed drainage device, which consists of the following elements: inlet pipe (1), outlet pipe (2), air pipe (3), elastic pipe (4), rubber bulb (5), washing water tank (6 ), a container with an antiseptic solution (7). A container with an antiseptic solution (7) is installed upside down above the patient’s open wound cavity (8) on a standard stand (12) for a dropper. A wash water tank (6) and a rubber bulb (5) are installed below the patient’s open wound cavity (8). Tanks (7) and (6) are standard 400 ml glass bottles. The rubber bulb (5) is a hollow rubber vessel with a volume of 150 ml, which is not sealed on a tank for washing water (6). At the end of the rubber bulb (5), an elastic tube (4) is fixed, which is immersed at the bottom of the washing water tank (6), while at the bottom of this container there is a liquid level that blocks the air from entering the elastic tube (4). On the base of the rubber bulb, the discharge tube (2) and the lower end of the air tube (3) are hermetically fixed. Thus, a rubber bulb (5) and an air tube (3) hermetically connect a discharge tube (2) and a container with an antiseptic solution (7) into a single vacuum space. The container (7) communicates with the open wound cavity (8) through the supply tube (1), through which the antiseptic solution enters the open wound cavity (8). Purulent flush from the open wound cavity (8) through the discharge tube (2) enters the cavity of the rubber bulb (5). Tubes (1) and (2) have a different diameter depending on the size of the purulent cavity, while the inlet tube (1) is equipped with a clamp (9) for regulating the flow of the antiseptic solution into the open wound cavity (8) and a dropper (11). The air duct (3) is also equipped with a clamp (10) to prevent the antiseptic solution from entering the air duct during the initial period of operation of the drainage device, as well as to regulate the flow of air into the container with the antiseptic (7). Tubes (1) and (3) are made of PVC and have a diameter of 2-3 mm, and tubes (2) and (4) are made of silicone and have a diameter of 5-6 mm.

The principle of operation of the proposed drainage device is based on the creation of negative pressure in the cavity of the rubber bulb (5), which ensures effective outflow of the washing fluid from the open wound cavity (8). Since the container with the antiseptic (7) and the cavity of the rubber bulb (5) are connected by an air tube (3), the negative pressure in the cavity of the rubber bulb (5) is created due to the rarefaction in the container with the antiseptic (7), which occurs upon receipt antiseptic in the open wound cavity (8) under the action of gravity. Since the discharge tube (2) is hermetically fixed on the basis of the rubber bulb (5), the negative pressure created in the cavity of the rubber bulb (5) is also created in the lumen of the discharge tube (2), due to which there is an active constant aspiration of the wash water from an open wound cavity (8). An elastic tube (4), hermetically fixed at the end of the rubber bulb (5), is immersed at the bottom of the washing water tank (6) with a filled liquid level, which ensures the outflow of washing water entering the cavity of the rubber bulb (5) due to gravity. The liquid level that closes the air in the elastic tube (4) is necessary to prevent air from flowing from the washing water tank (6) into the cavity of the rubber bulb (5).

The drainage device operates as follows.

The end of the inlet tube (1) is fixed at the upper pole of the patient’s open wound cavity (8), and the end of the outlet tube (2) for outflow of washings is fixed at the lower pole of the patient’s open wound cavity (8). 50 ml of antiseptic is poured into the wash water tank (6) and an elastic tube (4) fixed to the end of the rubber bulb (5) is lowered to the bottom of this tank so that the liquid level blocks the air from entering the tube (4). Clamp (10) block the air tube (3). Open the clamp (9) on the inlet tube (1). Then, after about 30 seconds, after the antiseptic begins to enter the wound cavity through the inlet tube (1), the clamp (10) on the air tube (3) is opened. After the above-mentioned manipulations, the antiseptic solution from the container (7) through the inlet tube (1) begins to flow into the open wound cavity (8), and the washing water from it through the outlet tube (2) begins to actively aspirate into the cavity of the rubber bulb (5), and then through an elastic tube (4) enter the tank for washing water (6).

The cycle is repeated with the frequency and duration set by the doctor. The therapeutic effect of the drainage is ensured by the controlled flow of an antiseptic solution into the patient’s open wound cavity and active constant outflow of wash water from it.

The use of the proposed drainage device allows to ensure the flow of an antiseptic solution into the open wound cavity, the constant active aspiration of the wash water from the drained wound cavity, to regulate the flow rate of the antiseptic solution into the open wound cavity.

Information sources

1. Gulman M.I., Vinnik Yu.S., Miller SV. Atlas of drainage in surgery. - Krasnoyarsk, 2004.

2. "Device for drainage of purulent abdominal wounds" AM 662 A2, A61M 27/00, from 09/12/1999.

Claims (2)

1. A drainage device comprising a container with an antiseptic, a tank for rinsing water, a lead-in tube connecting a container with an antiseptic with a wound cavity, a drain pipe and an air pipe connected at one end to a container with an antiseptic, characterized in that said air pipe is connected to the other end to the base of the rubber bulb, on which the outlet pipe is installed, while at the end of the rubber bulb is mounted an elastic tube, which is installed in the tank for washing water in such a way that Lack of fluid blocked air from entering the tube. 2. The device according to claim 1, characterized in that the supply and air pipes are equipped with clamps.