RU2248222C1 - Device for treating purulent cavities - Google Patents

Abstract

FIELD: medical engineering.

SUBSTANCE: device has tube introducible via trocar. The tube has circular groove in distal part with head piece put over it at its top. The head piece is spherical hollow reservoir having cylindrical sleeve. Ring-shaped thickening is available on the sleeve end for fixing it in the circular groove. The spherical reservoir is molded from flexible material and has cleansing pile arranged at an angle of 90° to the surface as follows. One filament is on the pole, a part of is arranged along equator half distance between the poles and the other filaments are distributed in the middle between the equator and the poles. Slit-like valves are available between the pile filaments along the lines of their arrangement. Proximal part of the tube is enclosed in casing and protrudes 30-40 mm from it. Worm gear is available in tube casing forming worm-and-worm pair with a worm with shaft projects from the casing and is connected to electric engine rotating the tube. Sleeve is put on over the protruding proximal part and fixed on the casing. The sleeve is connected to pump by means of a hose.

EFFECT: enhanced effectiveness of treatment.

4 cl, 1 dwg

Description

The invention relates to medicine, namely to video endoscopic surgery.

Known irrigator-aspirator (aquapurator) for sanitation of purulent cavities, which consists of a hollow thin-walled metal tube with a cut at the end and has 4 additional holes on the distal working part on the walls for spraying liquid, and on the proximal part there are valves for regulating the flow and outflow of fluid , and which is connected by hoses to a pump forcing liquid and a tank for collecting effluent from the sanitation products (WISAP Aqua-Purator 1610 User Manual).

The disadvantage is low efficiency in some cases, especially in the presence of a cavity of complex shape, dense contents in it or sections of purulent-necrotic tissue fixed to the walls of the cavity.

The technical result of the invention is to increase the efficiency of sanitation of purulent cavities.

The technical result is achieved by the fact that there is a rotating hollow metal or plastic tube with a diameter of 5 mm with a circular furrow 1 mm deep on the distal part 10 mm from the end hole. The proximal part of the tube is enclosed in the body, and the tube in the proximal direction is longer than the body and has a worm wheel, which, being part of the worm pair, transmits rotation from the electric motor through the worm with the shaft. The electric motor is placed in the handle housing, which is connected by a lock to the device, and allows you to adjust the speed of rotation of the tube from 0 to 100 rpm. On the proximal part of the tube and body, a fitting with a stuffing box is put on, which is connected to a pump that supplies liquid under pressure. A nozzle is put on the distal part with fixation in a circular groove, which is a hollow spherical container molded from an elastic material, for example, silicone, 10 mm in diameter with a 10 mm cylindrical sleeve having a ring-shaped thickening at the proximal end to fix it in the circular groove of the device tube. The surface of the nozzle is equipped with 17 cleaning fibers 4 mm long and 0.7 mm thick, which are located at an angle of 90 degrees to the surface of the nozzle as follows: 6 pieces at the equator at an equal distance from each other; 5 pieces in the middle of the distance between the equator and the poles, also at the same distance from each other, and 1 at the distal pole. Between the villi, along the line of their location, there are 16 slit-like valves through which the liquid supplied under pressure is sprayed.

The drawing shows a General view of the device.

The device consists of the following parts: a hollow thin-walled tube with a diameter of 5 mm (1), equipped in the distal part with a circular furrow 1 mm deep (2) at a distance of 10 mm from the end hole (3). The proximal part of the tube is enclosed in the body (4), and the tube protrudes from the body 30-40 mm (5). Inside the housing on the tube there is a worm wheel (6), forming a worm pair with a worm (7) located in the same housing. A shaft (8) comes out of the worm from the body. A handle (10) is connected to the device case at the place of the shaft exit by means of a lock (9), inside of which there is an electric motor (11), a rotating shaft. A fitting (12) is put on the proximal part of the tube and the body with an oil seal (13), which ensures tightness. The fitting is connected by a flexible hose (14) to the pump (15). A nozzle (16) is put on the distal part with fixation in a circular furrow, which is a hollow spherical container with a diameter of 10 mm (17), molded from an elastic material, such as silicone, with a cylindrical sleeve (18), at the end of which there is an annular thickening (19) to fix it in the groove (2) of the tube (1). The nozzle surface is covered with 17 cleaning fibers 4 mm long and 0.7 mm thick, located at an angle of 90 degrees to the nozzle surface as follows: 6 pieces at the equator at an equal distance from each other (20); 5 in the middle of the distance between the poles and the equator (21) also at the same distance between each other, and 1 at the distal pole (22). Between the villi there are 16 slit-like valves (23) through which the liquid supplied under pressure is sprayed.

The device operates as follows. a handle (10) is connected to the device case (4) in the place of the shaft exit (8) by means of a lock (9). A fitting (12) connected by a flexible hose (14) to the pump (15) is connected to the proximal part of the tube (5) and the body (4) of the device. A nozzle (16) is put on the distal part of the tube with fixation in a circular groove (2). By turning on the pump (15) and the electric motor (11), the quality and speed of rotation of the nozzle and liquid spray are checked. Then the pump and motor are turned off. Under the supervision of an ultrasound trocar, a purulent cavity is punctured, the liquid part of the contents is evacuated, and a video camera is inserted into the cavity. Then, under the control of the video camera, a second trocar is installed in the cavity, through which the assembled device is introduced. Under the control of vision by a rotating nozzle (16) with continuous supply of fluid by a pump (15) through a flexible hose (14), the walls of the cavity are treated with purification from purulent-necrotic masses and thick detritus. The resulting suspension is periodically removed with an aspirator.

The proposed device allows for effective sanitation of abscesses of any localization, especially in the presence of a cavity of complex shape, thick detritus, purulent-necrotic deposits on the walls. With the location of abscesses in hard-to-reach places, the introduction of the device can be carried out under the control of computed tomography. The device can be metal, which will allow it to be sterilized and reused, or plastic and disposable.

Claims (4)

1. Device for sanitation of purulent cavities, consisting of a tube, characterized in that the device is adapted to be inserted through a trocar, the tube in the distal part being provided with a circular groove, onto which a nozzle is placed on top, which is a hollow spherical container with a cylindrical sleeve, at the end which has a ring-shaped thickening for fixing it in a circular groove, while the spherical container is molded from an elastic material and has cleaning fibers located at an angle 90 degrees to the surface as follows: one villi at the pole, part of the villi along the equator line located in the middle of the distance between the poles, and the remaining villi at the middle of the distance between the equator and the poles, as well as slit valves between the villi along the lines of their location, the proximal part of the tube enclosed in the housing and protrudes from it by 30-40 mm, in the housing on the tube there is a worm wheel forming a worm pair with a worm, the shaft of which protrudes from the housing and is connected to an electric motor rotating a tube, on the proximal protruding part of which a fitting is attached with fixation on the body, connected by a hose to the pump. 2. The device according to claim 1, characterized in that the fitting has an oil seal. 3. The device according to claim 1 or 2, characterized in that the tube is made of metal. 4. The device according to claim 1 or 2, characterized in that the tube is made of plastic.