RU182779U1 - Device for intraorgan intraluminal injection - Google Patents

Abstract

The utility model relates to medicine, namely to experimental surgery and is intended for intraorgan intraluminal injections into the wall of a hollow organ to simulate pathological processes (ulcers) developing from the mucous membrane of the target organ wall in experimental animals. Device for intraorgan intraluminal injection (hereinafter UDVI) ) is a tube-injector made in the form of two components. A tube (case) made in the form of a hollow polyvinyl chloride tube, an UDVI injector is presented in the form of a hollow polyvinyl chloride tube, the outer diameter of which is close to the inner diameter of the tube, the end part of the injector is equipped with a fixed standard shortened insulin needle, the proximal end of the injector is equipped with a fixed standard needle for intramuscular injection and a limiter allowing injections of a given depth. This device provides the ability to simulate pathological processes arising from the lumen of the hollow target organ.

Description

The utility model relates to medicine, namely to experimental surgery and is intended for intraorganic intraluminal injections into the wall of a hollow organ to model pathological processes (ulcers) developing from the mucous membrane of the target organ wall in experimental animals.

The device for intraorgan intraluminal injection (hereinafter UDVI) is a tube-injector made in the form of two components. The UDIVI tube (case) is made in the form of a hollow polyvinyl chloride tube with an outer diameter of 2.5 mm and an inner diameter of 1.5 mm, having a length of 300 + 0.5 mm, and in a free state, having a bend with a radius of 140 + 20 mm. The UDIVI injector is made in the form of a hollow polyvinyl chloride tube with an outer diameter of 1.5-0.25 mm and an inner diameter of 1.0 + 0.25 mm, having a length of 320 + 0.5 mm, in a free state, having a bend with a radius of 140 + 20 mm. The end part of the injector is equipped with a fixed standard shortened insulin needle (for insulin injection) with a bevel of 45 ^° and protruding beyond the lumen of the inner tube by 4 + 0.5 mm. The proximal end of the injector is equipped with a fixed standard needle for intramuscular injection. Then, at a distance of 20 mm from the proximal edge, 8 pieces (each 0.5 mm) were made into the inner tube for programmable fixation of the stroke limiter of the inner tube. The limiter of the stroke of the inner tube is made in the form of a polyvinyl chloride rectangular plate with a thickness of 2 + 0.5 mm, a height of 30 + 0.5 mm, a width of 9 + 0.5 mm inside which there is a conically tapering hole from 4 to 1 mm, in the area of maximum expansion there is a groove making it movable one of the faces of the plate. The presence of the metal part of the intramuscular needle in the proximal part of the lumen of the inner tube protects against compression and impaired passage of the injected fluid when the travel stop is fixed.

The utility model relates to medicine, namely to experimental surgery.

Analogues close to the claimed device (UDIVI) used in experimental surgery in the available literature have not been identified.

The objective of the utility model is to create conditions for intraorgan intraluminal injection into the wall of a hollow organ when modeling pathological processes (ulcers) developing from the mucous membrane of the target organ wall in experimental animals.

According to a utility model, the solution of this problem is achieved by first introducing a protective tube into the lumen of the gastrointestinal tract that protects the wall of the target organ from mechanical and chemical injuries, then an injector is introduced, the use of which allows the introduction of a given solution at a given location and at a given depth .

          The proposed UDVI is shown schematically in FIG. 1-4, where 1 is the standard intramuscular injection needle, 2 is the inner tube over the intramuscular injection needle, 3 is the stroke limiter of the inner tube, 4 is the tube (outer tube), 5 is the standard shortened insulin needle, 6 is the proximal notch the edge of the inner tube.

          Device for intraorganic intraluminal injection (UDIVI) is used as follows. Under anesthesia, after median laparotomy, through the mouth of the experimental animal into the esophagus and further into the lumen of the target organ (stomach, duodenum), the tube of the proposed UDVI is introduced, the end face of the tube from the mucosa abuts against a given section of the wall of the target organ, which is controlled from the side of the laparotomy wound , then an injector filled with a solution is introduced into the lumen of the tube (example: acetic acid, hypertonic solution), the stroke limiter is set to a predetermined depth of injection, after the insulin needle penetrates the organ wall - Ishenim insulin syringe with a predetermined dividing 0,01ml administered volume of the solution while controlling the integrity of the serous membrane of the target organ of laparotomic wound. After the injection, the UDI is removed from the lumen of the gastrointestinal tract.

This device for intraorganic intraluminal injection (UDIVI) allows you to reduce the risk of chemical exposure to aggressive environment on unprogrammed sections of the walls of the gastrointestinal tract through the use of a tube, achieved by the design of the device, which allows the injection of the solution into a strictly specified area and at a strictly specified depth due to the use of an injector and a course limiter, and thereby facilitating the modeling of pathological processes (ulcers) arising from the lumen of the target organ for e sperimentatora.

          UDIVI was used to model stomach and duodenal ulcers in a chronic experiment in laboratory rats. Complications of the use of UDIVI during surgery and in the postoperative period were not noted.

          The proposed device for intraorgan intraluminal injection (UDVI) is effective, safe and convenient when performing modeling of stomach ulcers and duodenal ulcers in an experiment in laboratory animals. The device is intended for reusable use, economically and available for use in biological laboratories involved in the study of pathological processes in the hollow organs of the gastrointestinal tract.

Claims (1)

A device for intraorganic intraluminal injection, which provides the possibility of introducing solutions into the wall of a hollow organ from the mucosa, characterized in that it is made in the form of a tube-injector, which is an outer tube designed to protect the walls of the gastrointestinal tract from unprogrammed chemical exposure to aggressive media, an inner tube equipped with an insulin needle at the end, and in the proximal part, with an intramuscular injection needle and an internal tube stop Enabling by means of an insulin syringe under control of laparotomic wound to produce injection solution in strictly predetermined zone and at a strictly predetermined depth.

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