RU204508U1 - ATRAUMATIC FLEXIBLE PROBE WITH A MOVING TIP FOR DETERMINING THE DIRECTION OF CINDENT FISTULA - Google Patents

Abstract

The useful model relates to medicine, namely to colorectal surgery, and can be used for surgical interventions, as well as for carrying out diagnostic manipulations. The proposed version of an atraumatic flexible probe with a movable tip for determining the direction of convoluted fistulous passages is represented by a single instrument that combines a metal handle and a working part, which includes: straight and curved parts of the instrument, as well as a spherical tip, which are made of elastomer. All materials used in the instrument are resistant to disinfectants and sterilization conditions. Execution of the working part of the instrument from elastomer allows elastic and soft work with tissues, while avoiding the formation of false fistulous passages. The spherical tip made of elastomer provides atraumatic advancement through the canals and cavities, which significantly reduces the risk of trauma to blood vessels and wound bleeding. A useful model allows you to expand the possibilities of intraoperative diagnosis of pathological fistulous tracts, to assess the length, to identify changes in the relief of the intestinal mucosa and the presence of additional cavities in various pathologies ...

Description

The useful model relates to medicine, namely to colorectal surgery, and can be used for surgical interventions, as well as for carrying out diagnostic manipulations.

A well-performed procedure helps to establish the direction of the tortuous fistulous passages in relation to the intestinal wall, to assess the length, to identify changes in the relief and the presence of additional cavities, which in turn allows you to choose an adequate tactics of surgical intervention. The procedure is of particular value for the diagnosis of chronic paraproctitis (inflammation of the peri-rectal tissue), because makes it possible to establish a message of the pathological course directly with the rectal lumen. The presence of such a connection in the anal canal is the main feature of this disease, and its absence poses additional diagnostic tasks for the doctor.

Known device (Patent RU 190716 U1) [2], which has the ability to confirm the fact of emphasis on dense tissue or other anatomical structures that impede the advancement by the emergence of a light signal.

The disadvantage of this device is the lack of the ability to bypass the obstacle and establish the fact of pathological messages.

Known research method using a metal bulbous probe Moinigen, which is used to study the features of the topography of rectal fistulas [1]. This research method was adopted by us as a prototype. The disadvantages of the prototype are:

1. High risk of false path formation when metal elements touch the working part of the probe during the procedure.

2. Possible bleeding from soft tissues when reaching them with a metal spherical thickening during the procedure.

A known research method is a diagnostic test with a dye. The disadvantage of this study is the impossibility of isolating the fistulous course on the frame; allergic reactions are possible [3].

Thus, it is necessary to create conditions for detecting changes in the relief, length and presence of pathological canals and cavities in the intestinal wall of the rectum during therapeutic and diagnostic interventions.

The purpose of creating a useful model is to develop a model of an atraumatic flexible probe with a movable tip to determine the direction of the convoluted fistulous passages. Comparison of the proposed device with others known in this field of medicine has shown that it meets the criteria of a utility model. The proposed device is illustrated by graphic material.

Brief description of the drawing. The accompanying drawing shows a diagram of the design of an atraumatic flexible probe.

FIG. 1 shows the proposed device in lateral projection, indicating the following positions: 1 - the total length of the tool; 2 - straight part of the tool; 3 - spherical tip; 4 - curved part of the tool; 5 - bending angle; 6 - tool handle.

Implementation of the utility model. The proposed version of an atraumatic flexible probe with a movable tip for determining the direction of the convoluted fistulous passages is represented by a single tool that connects a metal handle (position 6 in Fig. No. 1) and a working part, including: straight (position 2 in Fig. 1) and curved (position 4 in Fig. No. 1) part of the tool, as well as a spherical tip (position 3 in Fig. 1), which are made of elastomer.

The general requirement for all materials used in this instrument is that they are made from those materials that are approved for use in medical devices, and that they are resistant to disinfectants and sterilization conditions.

The handle of the tool, which has a circular cross-section, is recommended to be made of stainless steel (position 6 in Fig. 1), its dimensions: length - 70 ± 0.2 mm, diameter - 2 ± 0.2 mm. The total length of the tool (position 1 in Fig. 1) is 230 ± 10 mm. The working part has a length of 160 ± 2 mm: the straight part (position 2 in Fig. 1) - 150 ± 1 mm, diameter 0.8 ± 0.2 mm; curved part (position 4 in Fig. 1) - 10 ± 1 mm, diameter 0.8 ± 0.2 mm; spherical tip (position 3 in Fig. 1) in diameter - 1 ± 0.2 mm. The bending angle of the working surface between the straight and curved parts of the tool (position 5 in Fig. 1) is 15 °.

The articulation of the metal handle (position 6 in Fig. 1) and the polymer straight working part (position 2 in Fig. 1) can be done by fusing directly onto the handle of the elastomer, and creating a metal rod with a length of 1.2 ± 0 on the side of the section, 5 mm, with a diameter of 0.3 ± 0.1 mm for applying an elastomeric element to it.

Execution of the working part of the instrument from elastomer allows elastic and soft work with tissues, and thus avoid the formation of false fistulous passages. The spherical elastomer tip provides atraumatic advancement through the canals and cavities, which significantly reduces the risk of blood vessel trauma and wound bleeding.

Thus, the use of the proposed device makes it possible to expand the possibilities of intraoperative diagnosis of pathological fistulous tracts, to estimate the length, to reveal changes in the relief of the intestinal mucosa and the presence of additional cavities in various pathologies.

In addition, the proposed useful model makes it possible to reduce the risk of bleeding arising from traumatization of soft tissues by metal working surfaces of the instrument, which in turn can accelerate both the operating stage itself and the process of tissue regeneration. This, in turn, makes it possible to improve the immediate and long-term results of treatment, and to reduce the length of stay of patients in the hospital.

INFORMATION SOURCES:

1. Dydykin S.S., Blinova E.V., Shcherbyuk A.N. "Modern Surgical Instruments: A Handbook". - M .: GEOTAR-Media, 2016: p. 29-30.

2. PROBE PUGUCHATY / Patent for a useful model of the Russian Federation RU 190716 U1, 09.07.2019.

3. Clinical guidelines for the diagnosis and treatment of adult patients with chronic paraproctitis (anal fistula, rectal fistula) / Association of Coloproctologists of Russia - 2013.

Claims (1)

Atraumatic flexible probe with a movable tip for determining the direction of convoluted fistulous tracts, represented by a single instrument, characterized in that the probe consists of a metal handle and a working part, including: a straight and curved part of the instrument, as well as a spherical tip, which are made of elastomer; the articulation of the metal handle and the polymer straight working part is made by fusing directly onto the handle of the elastomer.

Images