RU166426U1 - DYE SUPPLY UNIT FOR ENDOSCOPIC CHROMOSCOPY - Google Patents

Abstract

A device for supplying dye for endoscopic chromoscopy, having a body with a tube for conducting liquid and a tube for conducting air, a reservoir for liquid, a source of overpressure with an inlet check valve and a check valve, a mixing tube, characterized in that it has a rotary valve for changes in air supply direction; from the tube for supplying air through a rotary valve to the reservoir for the liquid leaves the tube to create excess pressure; a fluid reservoir made of a transparent material is fixed to the housing by means of a threaded connection; at the end of the mixing tube there is a cannula for attaching an endoscopic catheter to it; the outer diameter of the distal part of the body corresponds to the inner diameter of the C-shaped holder of the V-system of the endoscope.

Description

The invention relates to the field of medicine, in particular to devices designed to supply liquid dye to irrigate the gastrointestinal mucosa during endoscopic chromoscopy.

A device is known that contains a pump for dosed liquid supply and an associated motor with a power source (1). The disadvantage of this device is that it is difficult to manufacture, requires electric power, contains an electric motor and moving parts in the structure, requiring regular maintenance. The device is bulky and difficult to manage, which does not allow using it without interruption from ongoing endoscopic examination.

A device for spraying liquids is known, comprising a spray chamber, a drive shaft with holes for supplying liquid, and a device for secondary crushing of drops (2).

The disadvantages of the device are the complexity of the design, the impossibility of its use in endoscopic examination, the impossibility of adequate processing of parts of the device for reuse.

A device is known for irrigation of the larynx in the treatment of laryngitis, comprising a housing with a tube for conducting fluid and a tube for conducting air, a reservoir for fluid, a source of overpressure with an inlet check valve and a check valve, a mixing tube. The fluid reservoir is also used as a handle for holding the device (3). This device is taken by us as a prototype. The disadvantages of the device are the inability to attach to it a standard endoscopic catheter, which forces the device to be processed after each use. The lack of connection with the attachment of the endoscope makes its use in endoscopy technically difficult. The absence of a rotary valve does not allow to purge the system of supply tubes, which leads to an excessive consumption of the supplied liquid. Using the reservoir with the medicine as a pen is inconvenient for a visual assessment of the amount of solution used and its residue in the reservoir.

The purpose of the development of a utility model is to create a device for supplying dye with endoscopic chromoscopy, which allows to simplify the work of a doctor when performing endoscopic chromoscopy.

This goal is achieved in that the device has a rotary valve for changing the direction of air supply; from the tube for supplying air through a rotary valve to the reservoir for the liquid leaves the tube to create excess pressure; a fluid reservoir made of a transparent material is fixed to the housing by means of a threaded connection; at the end of the mixing tube there is a cannula for attaching an endoscopic catheter to it; the outer diameter of the distal part of the body corresponds to the inner diameter of the C-shaped holder of the V-system of the endoscope (4).

The technical result of the creation of the device is to reduce the complexity of the irrigation of the gastrointestinal mucosa during chromoscopy during endoscopic examination

The device is reliably strengthened and convenient for performing chromoscopy, due to the possibility of fixing the distal part of its body to the Conformable holder of the V-system of the endoscope, as well as the cannula at the end of the mixing tube for attaching an endoscopic catheter to it. The presence of a rotary valve allows the doctor to “blow through” the device’s tubes and catheter, which saves the amount of dye used. The transparent material from which the fluid reservoir is made allows the physician to visually assess its level, and the threaded connection to the body allows the reservoir to be removed and filled with fluid if necessary. The device does not come into contact with the internal environment of the body, and the supply of dye to the lumen of the gastrointestinal is carried out through a processed or disposable endoscopic catheter. Therefore, the device does not need sterilization and cannot cause the cross-transfer of pathogens.

The device for supplying dye for endoscopic chromoscopy has a housing with a tube for conducting liquid and a tube for conducting air, a reservoir for liquid, an overpressure source with an inlet check valve and a check valve, and a mixing tube. The device has a rotary valve for changing the direction of air supply. From the tube for supplying air through a rotary valve to the fluid reservoir, the tube leaves to create excess pressure. A fluid reservoir made of a transparent material is fixed to the body by means of a threaded connection. At the end of the mixing tube there is a cannula for attaching an endoscopic catheter to it. The outer diameter of the distal part of the body corresponds to the inner diameter of the C-shaped holder of the V-system of the endoscope.

The utility model is illustrated by graphic material. The figure 1 shows a diagram of the proposed device. The device consists of a housing (1) with a tube for conducting fluid (2) and a tube for conducting air (3), a reservoir for fluid (4), a source of overpressure (5) with an inlet check valve (6) and an outlet check valve (7), a mixing tube (8), a rotary valve (9) to change the direction of the air supply, a tube to create excess pressure (10). The fluid reservoir (4) is fixed to the housing (1) by means of a threaded connection (11). At the end of the mixing tube (8) there is a cannula (12) for attaching an endoscopic catheter. The outer diameter of the distal part (13) of the housing (1) corresponds to the inner diameter of the C-shaped holder of the V-system of the endoscope.

The device is used as follows. The required amount of dye is poured into the fluid reservoir (4). The fluid reservoir (4) is fixed to the housing (1) by means of a threaded connection (11). The distal part (13) of the housing (1) is fixed to the C-shaped holder of the V-system of the endoscope. An endoscopic catheter inserted into the working channel of the endoscope is fixed to the cannula (12). During chromoscopy, the doctor presses on the source of overpressure (5), as a result of which the air passes through the tube for conducting air (3), the rotary valve (9), the tube to create overpressure (10) and enters the reservoir for liquid (4) . The injected air through the tube for conducting fluid (2) pushes the fluid into the mixing tube (8) and then into the endoscopic catheter. When the pressure on the overpressure source (5) ceases, it is filled with air from the environment through the inlet check valve (6). The presence of an outlet return valve (7) prevents the retrograde flow of fluid from the fluid reservoir (4). These actions are repeated until the necessary part of the gastrointestinal tract is completely irrigated with dye. Next, the rotary valve (9) is rotated “from itself” by 90 °, due to this, air from the air conducting pipe (3) enters through the rotary valve (9) directly into the mixing tube (8), bypassing the reservoir with liquid (4), thereby perform "blowing" of the mixing tube (8) and the endoscopic catheter. To return to the liquid supply state, the rotary valve (9) is returned to the reverse position by turning by 90 ° “towards itself”.

The use of the device is illustrated by a clinical example. Patient B., 78 years old, diagnosed with gastrointestinal bleeding. When esophagogastroduodenoscopy in order to perform endoscopic chromoscopy, the proposed device was used. During use, the device was securely fixed to the endoscope, which allowed the doctor to freely manipulate the instrument. The device provided unimpeded flow of a dye-liquid. Since chromoscopy of several zones of interest was performed, the rotary valve of the device made it possible to "blow through" the mixing tube and the endoscopic catheter between the supply of the dye-liquid. There were no complications during the manipulation. The transparent material of the fluid reservoir allowed the doctor to visually assess the lack of dye for the next study. The reservoir was disconnected from the body and filled, which allowed for a similar study in another patient.

This device can be widely used both in research laboratories, and medical hospitals, diagnostic and specialized medical centers.

INFORMATION SOURCES:

1. RF patent for utility model No. 2240142, IPC A61M 5/145, 2004

2. RF patent for utility model No. 2435650, IPC B05V 3/00, 2011

3. RF patent for utility model No. 84707, IPC A61M 11/02, 2009

4. Olympus-V-system, C-shaped holder www.olympus.com.ru

Claims (1)

A device for supplying dye for endoscopic chromoscopy, having a body with a tube for conducting liquid and a tube for conducting air, a reservoir for liquid, a source of overpressure with an inlet check valve and a check valve, a mixing tube, characterized in that it has a rotary valve for changes in air supply direction; from the tube for supplying air through a rotary valve to the reservoir for the liquid leaves the tube to create excess pressure; a fluid reservoir made of a transparent material is fixed to the housing by means of a threaded connection; at the end of the mixing tube there is a cannula for attaching an endoscopic catheter to it; the outer diameter of the distal part of the body corresponds to the inner diameter of the C-shaped holder of the V-system of the endoscope.

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