RU2423078C1 - Device for collection of diagnostic material - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine, namely to devices for diagnostic sampling, and can be used, for instance, in gynecology for sampling biological material. Device for sampling diagnostic material contains conductor in form of tube with flexible distal end, which is made with lateral opening. Inside conductor rod is placed. One end of rod is connected with element for sampling biological material, the other rod end is provided with handle. Element for sampling biological material is located in cavity of rod distal end. Limiter of depth of conductor introduction into uterus cavity is located on conductor surface. Element for sampling biological material is made in form of loop-scraper with possibility of its passing out through elongated lateral opening on closed distal end of spherical shape. Rod has possibility of interaction with distal end of conductor. On proximal end of conductor sealing device is installed.

EFFECT: extended functional possibilities of device, which ensure increase of amount of biological material sampled from uterus cavity.

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Description

The invention relates to medicine, in particular to devices for taking diagnostic samples, and can be used, for example, in gynecology for the collection of biological material (epithelial cells, biological fluids, microbial bodies) from the mucous membrane of the uterine cavity for the purpose of conducting diagnostic studies, allowing determine the precancerous and cancerous state, including endometrial cancer, as well as the hormonal composition of the uterine mucosa.

A device for collecting diagnostic material, containing a hollow conductor, at the distal end of which there are longitudinal strips connected to a rod located inside the conductor, and having the ability to bend to form gaps when the rod is pulled out of the conductor (patent RU No. 2347533 C1, IPC АВВ 10 / 00, published on February 27, 2009).

The disadvantage of this device is the limited amount of diagnostic material taken due to the lack of an additional vacuum fence, which reduces the reliability of the analysis result.

The closest in technical essence to the claimed technical solution is a device for collecting diagnostic material, containing in the form of a tube a conductor with a flexible distal end equipped with an opening for receiving biological material, a rod placed inside the conductor with an element for collecting biological material fixed to it, located in the cavity of the distal end, the proximal end of the rod is equipped with a handle, the depth gauge of the insertion into the uterus placed on its surface of the conductor (patent RU No. 225 0078 C1, IPC А61В 10/00, published on 04/20/2005).

However, the functionality of this device is limited due to the fact that the element for collecting biological material, which is a cytobrush, is made elastic, as a result of which stable removal and collection of biological material from the inner surface of the uterus is not provided. In addition, when the cytobrush is pulled out of the end opening of the conductor, injury to the inner walls of the uterus is possible. The introduction of the conductor into the cervical canal is difficult due to the bent distal end of the conductor, resulting in injury to the walls of the cervical canal by the end edges of the distal end of the conductor.

The technical task of the claimed technical solution is to expand the functionality of the device, providing an increase in the amount of collected biological material from the uterine cavity in order to increase the reliability of diagnostic tests, convenience and reduce the risk of injury when using.

This object is achieved due to the fact that the device for collecting diagnostic material, containing in the form of a tube a conductor with a flexible distal end provided with a side hole, a rod placed inside the conductor, one end of which is connected to an element for collecting biological material located in the cavity of the distal end , the other end is provided with a handle, a depth gauge for introducing the conductor into the uterine cavity, placed on the surface of the conductor, according to the invention, an element for collecting the biological mother la is formed as a scraper-loops with access to it through a lateral opening at the distal end of the elongated shape, wherein the end face of the distal end plugged and has a spherical shape, and the proximal end of the conductor sealing device is installed.

The presence of a loop-scraper and its fastening on the rod during rotation of the device around its axis allows biopsy of the endometrium from the walls of the uterus in an amount necessary for the reliability of biological research and at the same time ensures ease of use and speed of collection of material due to their simultaneous movement.

The exit of the loop-scraper through the lateral opening of an elongated shape and its location inside the conductor excludes injury to the uterine cavity and cervical canal by the distal end of the conductor when it is inserted and removed from the uterine cavity.

The spherical surface of the end face of the conductor allows you to easily and painlessly insert the device into the cervical canal without injuring its walls.

The sealing device at the proximal end of the conductor allows you to increase the amount of biological material taken by eliminating air leakage into the conductor cavity.

The figure 1 shows a General view of the described device in assembled form;

figure 2 - shows a section of a rod with a loop-scraper at the distal end located inside the distal end of the conductor.

A device for collecting diagnostic material contains a conductor in the form of a tube 1 with a flexible distal end 2 (figure 1). At the distal end 2 there is a lateral hole 3 of an elongated shape. Inside the conductor 1 there is a rod 4, on the distal end of which a loop-scraper 5 is fixed, and on the proximal end - a handle 6. The loop-scraper 5 (Fig. 2) is placed in the cavity of the distal end 2 of the conductor 1 with the possibility of its exit through the side hole 3 for taking biological material. The end face of the distal end 2 is plugged and has a spherical shape for painless insertion of the device through the cervical canal into the uterine cavity without injuring their walls. The conductor 1 is equipped with a limiter 8 and a sealing device 7 located on the surface of the conductor 1. The limiter 8 provides the introduction of the conductor into the uterine cavity by the required amount to prevent injury to the uterine wall. The sealing device 7 is placed at the proximal end of the conductor and serves to prevent air leakage into the conductor cavity and thereby increase the amount of biological material taken from the walls of the uterine cavity.

The device operates as follows:

In the initial position, the loop-scraper 5 is removed from the distal end 2 and is located inside the conductor 1. To take the biological material, the conductor 1 is inserted into the uterus to the limiter 8. While holding the conductor 1, the rod 4 by means of the handle 6 is pulled into the conductor 1 until it stops at the end of the distal end 2 conductors 1. At the same time, the scraper loop moves with the rod 5. When the rod 4 rests on the end of the distal end 2 of the conductor 1, the scraper loop 5, located opposite the elongated side hole 3, leaves the wire through this hole 1. arrestor conductor 1 having a distal end attached to two rotation around its axis. During the rotation of the loop-scraper 5, the biological material is separated from the walls of the uterine cavity. Then, the rod 4 with the loop-scraper 5 attached to it on the handle 6 is moved in the opposite direction from the conductor 1 and the loop-scraper 5 enters through the lateral hole 3 into the conductor 1. The biological material separated from the walls of the uterus is aspirated through the rod 4 in the opposite direction a lateral hole 3 into the conductor 1 into the resulting space in the cavity. The sealing device 7 eliminates the inflow of air into the cavity of the conductor 1 and increases the amount of biological material taken. After that, the device with biomaterial is removed from the uterine cavity and sent for diagnostic tests.

Thus, the design of the proposed device is simple to manufacture and use, an increase in the amount of collection of biological material is achieved by separating it from the walls of the uterine cavity with its subsequent suction into the conductor in the right amount for the reliability and accuracy of biological research. The collection of biological material is painless and does not injure the walls of the uterus.

Claims (1)

A device for collecting diagnostic material, comprising a conductor in the form of a tube with a flexible distal end provided with a lateral hole, a rod is placed inside the conductor, one end of which is connected to an element for collecting biological material located in the cavity of the distal end, the other end is provided with a handle, an input depth limiter a conductor into the uterine cavity, placed on the surface of the conductor, characterized in that the element for collecting biological material is made in the form of a loop-scraper with the possibility of exit it through an elongated side hole at the distal end, while the end of the distal end is muffled and spherical in shape, the rod has the ability to interact with the distal end of the conductor, and a sealing device is installed at the proximal end of the conductor.

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