CN210871737U

CN210871737U - Uterine cavity sampler

Info

Publication number: CN210871737U
Application number: CN201921113853.0U
Authority: CN
Inventors: 王建东
Original assignee: BEIJING OBSTETRICS AND GYNECOLOGY HOSPITAL CAPITAL MEDICAL UNIVERSITY
Current assignee: BEIJING OBSTETRICS AND GYNECOLOGY HOSPITAL CAPITAL MEDICAL UNIVERSITY
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-06-30
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a uterine cavity sampler, which comprises an outer sleeve capable of passing through cervix uteri and a sampling brush arranged in the outer sleeve, wherein the sampling brush can do linear reciprocating motion in the outer sleeve; the length of the sampling brush is greater than that of the outer sleeve; the sampling brush comprises a sampling rod and a sampling brush head arranged at the far end of the sampling rod; the sampling brush head consists of an elastic ring which can be changed into an inverted triangle and brush hair wound on the elastic ring; the sampling brush head can extend out of the far end of the outer sleeve and release to be in an inverted triangle under the pushing of the sampling rod. The utility model discloses the sampling brush get endometrium cell can, need not to get the tissue, all can realize not having the sampling operation of wound to patient's cervix uteri and palace chamber. The uterine cavity sampler is used for collecting endometrial cells to carry out preliminary cytological examination on endometrium, and patients with problems in cytological examination results can carry out hysteroscopy next step, so that the problems that all suspected patients need invasive examination and cause unnecessary injury to problem-free patients are effectively solved.

Description

Uterine cavity sampler

Technical Field

The utility model relates to a sampler, in particular to a sampler for sampling cells in uterine cavity, belonging to the field of medical appliances.

Background

The endometrial hyperplasia has a certain canceration tendency, so is classified as precancerous lesion, but according to long-term observation, most of the endometrial hyperplasia is a reversible lesion, or keeps a persistent benign state, only a few cases may develop into cancer after a longer time interval, the endometrial hyperplasia is classified into type 3 according to the structural morphology change of glands and the presence or absence of abnormal shape of glandular epithelial cells, ① is simple hyperplasia, the physiological reaction of endometrium is caused by the long-term stimulation of estrogen without progesterone antagonism, stroma and glands are proliferated simultaneously without gland crowding, the morphology of glandular epithelium has no abnormal shape, ② is complex hyperplasia, the glandular crowding of lesion areas is obvious, the abnormal shape of glandular epithelium is absent, ③ is atypical hyperplasia, the glandular epithelium has abnormal shape, belongs to intraepithelial tumors of endometrium, and is classified into light, medium and heavy according to the pathological degree, and the diagnosis depends on the diagnosis of endometrial histology.

At present, the clinical endometrial histology material drawing method mainly comprises the following steps: intimal biopsy, dilatation and curettage, and hysteroscopy. Since atypical endometrial hyperplasia often appears as a sporadic or focal lesion, the entire endometrium may be hyperplastic to varying degrees at the same time, and biopsy of only a few tissues may not reflect all changes in the endometrium. For perimenopausal women with uterine curettage and atypical hyperplasia of endometrium, 30-50% of the resected uteruses have highly differentiated adenocarcinoma. Therefore, obtaining comprehensive pathological examination of the endometrial tissue of the uterine cavity is of great importance. Compared with the simple collection of a few pieces of endometrial tissue, the tissue scraped by the uterine dilation and curettage is more comprehensive, but some parts, especially the double uterine horn and the uterine fundus, can still be missed before the curettage spoon. The hysteroscopy can not only see the condition of the endometrium from the appearance of the endometrium, but also can carry out uterine curettage or negative pressure suction under direct vision, and the examination and diagnosis are more detailed and comprehensive. However, the hysteroscope operation is complicated, 5% glucose solution or normal saline is needed to expand the uterus, after the uterine cavity is full, the visual field is bright, the scope is rotated to observe comprehensively according to the sequence, and if necessary, the location biopsy is carried out. The womb expanding process brings discomfort and fear to the patient. Most importantly, the samples obtained in the three examinations are endometrial tissues, so that the three examinations are invasive. Because cytological sampling and examination are not available at present, invasive examination is required for all suspected patients, and unnecessary injuries are caused to the benign endometrial hyperplasia patients.

How to solve the above problems in the prior art is still a hot spot for those skilled in the art to study.

Disclosure of Invention

The utility model aims to solve the technical problem that a can be fast convenient uterine cavity sample thief of gathering endometrium cell comprehensively is proposed, gather endometrium cell through this sample thief and carry out subsequent cytology inspection and can carry out preliminary cytology examination to the endometrium.

In order to achieve the above object, the utility model adopts the following technical scheme:

a uterine cavity sampler comprises an outer sleeve capable of passing through a cervix and a sampling brush arranged in the outer sleeve, wherein the sampling brush can do linear reciprocating motion in the outer sleeve; wherein the length of the sampling brush is greater than that of the outer sleeve; the sampling brush comprises a sampling rod and a sampling brush head arranged at the far end of the sampling rod; the sampling brush head consists of an elastic ring which can be changed into an inverted triangle and bristles which are wound on the elastic ring; the sampling brush head can extend out of the far end of the outer sleeve and is released into an inverted triangle under the pushing of the sampling rod.

Preferably, the sampling rod is provided with an original scale mark A.

Preferably, the sampling rod is of a hollow tubular structure.

Preferably, a guide wire is arranged in the sampling rod, and the guide wire can linearly reciprocate in the sampling rod; the far end of the guide wire is fixedly connected with the middle part of the elastic ring of the sampling brush head.

Wherein preferably said guide wire length is greater than said sampling brush length.

Preferably, the guide wire is provided with an original scale mark B and a complete release scale mark C.

Wherein preferably, the bristles are wound around the elastic ring in 360 degrees.

Wherein, preferably, be equipped with the fracture mark between sampling brush head and the sampling pole.

Preferably, the outer sleeve is made of a clinically acceptable rigid plastic material.

In the present invention, the "far end" and the "near end" are known to those skilled in the art, the far end is the end closer to the affected part, and the near end is the end closer to the operator.

The utility model has the advantages that:

(1) the diameter of the outer sleeve of the uterine cavity sampler is smaller than that of the cervical orifice, and the sampler can smoothly enter the uterine cavity through the cervical orifice in a natural state without expanding the cervical orifice or expanding the uterus. The sampling brush is brushed to take the endometrial cells without taking tissues, and noninvasive sampling operation can be realized for the cervix and the uterine cavity of a patient. The uterine cavity sampler is used for collecting endometrial cells to carry out preliminary cytological examination on endometrium, and patients with problems in cytological examination results can carry out hysteroscopy next step, so that the problems that all suspected patients need invasive examination and cause unnecessary injury to problem-free patients are effectively solved.

(2) After the outer sleeve enters the uterine cavity, the inverted triangle shape design of the sampling brush head and the 360-degree brush hair design surrounding the brush head can ensure that sampling in the uterine cavity is omitted, especially, the double uterine horns and the uterine bottom can be covered by the sampling brush head, so that the cytological examination result of a patient is more comprehensive and accurate.

(3) Because the sampling brush head has certain elasticity, the sampling brush head can quickly and conveniently retract into the outer sleeve after sampling is finished, and the sampling brush head can easily withdraw from the uterine cavity.

(4) This palace chamber sample thief has still increased the guide wire design, and the guide wire can support the sampling brush head and keep purpose shape unchangeable after the release of sampling brush head and sampling process, and can draw the guide wire after the sample is accomplished, thereby makes the first middle part of sampling brush sunken whole folding sampling brush head to overcoat intraductal, and this beta structure can effectively keep the overhead cell of sampling brush complete and not fall off.

(5) The design of a plurality of scale marks can be more convenient for operators to carry out standardized operation.

(6) The uterine cavity sampler has better clinical use effect and can lay a solid foundation for further uterine cavity cytology examination.

Drawings

Fig. 1 is a schematic view of an original state structure of embodiment 1 of the present invention;

fig. 2 is a schematic view of a deployed state of a sampling brush head according to embodiment 1 of the present invention;

fig. 3 is a schematic view of a recovery state of a sampling brush head in embodiment 1 of the present invention;

fig. 4 is a schematic view of a fully-recovered state of a sampling brush head in embodiment 1 of the present invention;

fig. 5 is a schematic view of the original state structure of embodiment 2 of the present invention;

fig. 6 is a schematic view of a deployed state of a sampling brush head according to embodiment 2 of the present invention;

fig. 7 is a schematic view of a recovery state of a sampling brush head according to embodiment 2 of the present invention;

fig. 8 is a schematic view of a fully recovered state of a sampling brush head according to embodiment 2 of the present invention;

fig. 9 is a state diagram of the sampling brush head of the utility model in embodiment 2 immersed in the cell preservation solution after being broken.

Detailed Description

Example 1

As shown in figures 1 to 4, the utility model discloses a uterine cavity sampler, which comprises an outer sleeve 1 capable of passing through cervix. The diameter of the cervix is about 3-6 mm under the natural condition, so the diameter of the outer sleeve of the sampler can be set to be less than 6mm generally, and a plurality of diameter sizes can be set according to the actual condition for individual difference. The outer sleeve 1 has the function of smoothly carrying the sampling brush into or out of the uterine cavity through the cervix without expanding the cervical orifice.

The sampling brush 2 is arranged in the outer sleeve 1 in a penetrating way, and the sampling brush 2 can do linear reciprocating motion in the outer sleeve 1. The overall length of the sampling brush 2 is greater than the length of the outer cannula 1 so that an operator grippable portion remains at the proximal end of the outer cannula 1 after the sampling brush head 22 of the sampling brush 2 is released. The sampling brush 2 comprises a sampling rod 21 and a sampling brush head 22 arranged at the far end of the sampling rod 21. The sampling rod 21 is provided with an original scale mark A, when the outer sleeve 1 is positioned at the original scale mark A, the sampling brush head 22 is completely accommodated in the outer sleeve 1, and the original scale mark A is arranged to prompt an operator to position the sampling brush head 22. The sampling brush head 22 consists of an elastic ring 221 which can be deformed into an inverted triangle and bristles 222 wound on the elastic ring 221; the sampling brush head 22 can extend out of the far end of the outer sleeve 1 under the pushing of the sampling rod 21 and is released into an inverted triangle, the shape of the sampling brush head is more in accordance with the shape of a coronary face of the uterine cavity, the three sides of the inverted triangle rotate by taking the sampling rod as an axis to realize the complete sampling of the uterine cavity, and particularly, the problems of sampling omission can be solved by brushing the uterine horn and the uterine fundus. The 360 degree bristles 222 attached to the elastic ring 221 are flexible and deformable, and can carry endometrial cells during sampling without damaging the endometrial tissue. A breaking mark 23 is arranged between the sampling brush head 22 and the sampling rod 21, the sampling brush head 22 can be conveniently broken after the sampling is finished by the breaking mark 23, and the sampling brush head 22 is placed in cell preservation solution for the next cytology examination. The outer sleeve 1 is made of clinically acceptable rigid plastic materials, and has certain hardness so as to facilitate the outer sleeve to smoothly pass through the cervix.

The utility model discloses before the use, place in outer tube 1 in sampling brush 2. When sampling, firstly, the outer sleeve 1 with the sampling brush 2 enters the uterine cavity through a cervical orifice, an operator fixes the sampling rod 21 after entering the uterine cavity and then withdraws from the outer sleeve 1 from the outside, after the outer sleeve 1 withdraws, the sampling brush head 22 is released to be in an inverted triangle shape, the sampling rod 21 is rotated to drive the sampling brush head 22 to sample comprehensively in the uterine cavity, and as the shape of the sampling brush head 22 completely conforms to the shape of the uterine cavity after being rotated, the uterine horn and the uterine fundus can be brushed by the sampling brush head through rotary sampling. After sampling, the outer sleeve is sleeved on the sampling rod again and pushed into the uterine cavity, the outer sleeve 1 is positioned in the original scale mark A of the sampling rod, and the sampling brush head 22 is recovered into the outer sleeve 1 and is carried by the outer sleeve 1 to exit from the uterine cavity. After the sample is withdrawn, the sampling rod 21 is used for pushing out the sampling brush head 22, and the sampling brush head 22 can be broken off and placed into the cell preservation solution 4 by slight force at the broken mark 23 for subsequent cytological examination.

Example 2

As shown in fig. 5 to 9, in the present embodiment, the sampling rod 21 is a hollow tubular structure, the guide wire 3 is disposed inside the sampling rod 21, and the guide wire 3 can reciprocate linearly in the sampling rod 21; the far end of the guide wire 3 is fixedly connected with the middle part of the elastic ring 221 of the sampling brush head. The length of the guide wire 3 is greater than the length of the sampling brush 2. The guide wire 3 is used for controlling the shape of the sampling brush head 22 to be rapidly deformed into an inverted triangle when the sampling brush head is released, and is not subjected to non-visual deformation under the action of external force. The guide wire 3 can be made of plastic material with certain hardness. The middle part of the guide wire 3 can be retracted firstly in the recovery process of the sampling brush head 22, so that the guide wire is folded in the outer sleeve more completely, and the folding form can more effectively protect the integrity of the sampled cells. In order to more clearly position the guide wire 3, the guide wire 3 is provided with an original scale mark B and a complete release scale mark C, and when the sampling rod 21 is positioned at the original scale mark B, the sampling brush head 22 is in a state of being completely retracted into the outer sleeve. When the sampling rod 21 is positioned at the position of the completely-released scale mark C, the shape of the sampling brush head 22 is completely released, and the shape of the sampling brush head 22 can be continuously adjusted according to the position of the completely-released scale mark C in the sampling operation process, so that the sampling brush head is more completely contacted with the uterine floor.

The other structure of this embodiment is the same as embodiment 1.

The utility model discloses before the use, place in outer tube 1 in sampling brush 2. Firstly, an outer sleeve 1 with a sampling brush 2 enters a uterine cavity through a cervical orifice, an operator fixes a sampling rod 21 after entering the uterine cavity and then exits the outer sleeve 1 from the outside of the sampling rod, after the outer sleeve 1 exits, a sampling brush head 22 is released, the shape of the sampling brush head 22 is adjusted by a guide wire 3, and the sampling brush head 22 is released to be an inverted triangle when the guide wire 3 is pushed until the sampling rod 21 is positioned at a complete release scale C. The sampling rod 21 is rotated to drive the sampling brush head 22 to rotate to fully sample in the uterine cavity. After sampling, the outer sleeve 1 is sleeved on the sampling rod 21 again and pushed into the uterine cavity, before the outer sleeve is completely sleeved on the sampling brush head 22, the guide wire 3 is firstly pulled to the near end of the instrument to the position of the original scale mark B, meanwhile, the outer sleeve 1 is pushed into the original scale mark A of the sampling rod 21, at the moment, the middle part of the sampling brush head 22 is sunken, symmetrically folded and retracted into the outer sleeve 1, and the outer sleeve 1 carries the whole body to exit from the uterine cavity. After the sample is withdrawn, the sampling brush head 22 is pushed out from the outer sleeve 1 by using the sampling rod 21, the sampling brush head 22 can be broken off by slightly exerting force at the broken mark 23, the guide wire 3 can be cut off by an instrument, and the sampling brush head 22 is placed into the cell preservation solution 4 for subsequent cytology examination.

Claims

1. A uterine cavity sampler comprises an outer sleeve capable of passing through a cervix and a sampling brush arranged in the outer sleeve, wherein the sampling brush can do linear reciprocating motion in the outer sleeve; the method is characterized in that:

the length of the sampling brush is greater than that of the outer sleeve;

the sampling brush comprises a sampling rod and a sampling brush head arranged at the far end of the sampling rod;

the sampling brush head consists of an elastic ring which can be changed into an inverted triangle and bristles which are wound on the elastic ring;

the sampling brush head extends out of the far end of the outer sleeve under the pushing of the sampling rod and is released into an inverted triangle.

2. The uterine cavity sampler of claim 1, wherein:

and the sampling rod is provided with an original scale mark A.

3. The uterine cavity sampler of claim 1 or 2, wherein:

the sampling rod is of a hollow tubular structure.

4. The uterine cavity sampler of claim 3, wherein:

a guide wire is arranged in the sampling rod, and the guide wire can linearly reciprocate in the sampling rod; the far end of the guide wire is fixedly connected with the middle part of the elastic ring of the sampling brush head.

5. The uterine cavity sampler of claim 4, wherein:

the guide wire length is greater than the sampling brush length.

6. The uterine cavity sampler of claim 5, wherein:

the guide wire is provided with an original scale mark B and a complete release scale mark C.

7. The uterine cavity sampler of claim 1, wherein:

the bristles are wound around the elastic ring in 360 degrees.

8. The uterine cavity sampler of claim 1, wherein:

and a fracture mark is arranged between the sampling brush head and the sampling rod.

9. The uterine cavity sampler of claim 1, wherein:

the outer sleeve is made of clinically acceptable rigid plastic materials.