CN111588424A - Negative pressure endometrium sampler and using method thereof - Google Patents
Negative pressure endometrium sampler and using method thereof Download PDFInfo
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- CN111588424A CN111588424A CN202010579762.7A CN202010579762A CN111588424A CN 111588424 A CN111588424 A CN 111588424A CN 202010579762 A CN202010579762 A CN 202010579762A CN 111588424 A CN111588424 A CN 111588424A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0291—Instruments for taking cell samples or for biopsy for uterus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
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- General Health & Medical Sciences (AREA)
- Gynecology & Obstetrics (AREA)
- Reproductive Health (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention belongs to the field of medical instruments, and particularly relates to a negative-pressure endometrium sampler and a use method thereof; comprises a negative pressure adsorption device, a pressure adjusting device and a rotatable adsorption tube; the rotatable adsorption tube comprises a rotary sleeve and an adsorption tube assembly; the adsorption tube assembly comprises an adsorption tube and a protection tube arranged outside the adsorption tube; one end of the adsorption tube, which is far away from the rotary sleeve, is circumferentially provided with a scraper and a suction hole; one end of the rotary sleeve is connected with the pressure regulating pipe, and the inside of the other end of the rotary sleeve is matched and rotatably connected with the outer wall of the adsorption pipe through a bearing; a rotating block is arranged at the connecting end of the adsorption tube and the rotating sleeve; a clamping block movably connected is arranged between the protection tube and the rotating block; the rotating block and the protection tube can be attracted by magnetic attraction; the top of the adsorption tube is provided with a seal head; when the clamping block is installed, the protective tube is in contact fit with the end face of the sealing head. The device can remove intrauterine liquid before scraping endometrium, and improves the sampling quality of endometrium.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a negative-pressure endometrium sampler and a using method thereof.
Background
Some patients with endometrial cancer, suspected endometrial cancer and the like need to take endometrial samples of the patients for pathological examination before diagnosis, but currently, gynecologists mostly take samples in a uterine curettage mode, mostly adopt a metal endometrial curette when in uterine curettage, wherein a curette head is in a spoon shape or a spoon shape, and during operation, the endometrial curette is inserted into a cervix to the bottom of a uterus along the direction of the cervix, clings to a uterine wall and scrapes a plurality of tablets from top to bottom to obtain an endometrial specimen.
The existing method for sampling endometrium by adopting an endometrium curette has the following problems:
firstly, when the curette is used, the medical operator needs to exert a large force, the curette exerts a large pressure on the uterine wall, the damage to the uterine wall is large, the pain of a patient is large, and more seriously, if the medical operator operates improperly, the uterine perforation of the patient is easy to cause, the hemorrhage is caused, and the life risk is caused; secondly, the effect of using a curette for sampling is poor, and continuous sampling of multiple parts cannot be performed; when a small amount of liquid is stored in the uterus, if the liquid is not cleared firstly, the quality of a sampled sample can be reduced; in the traditional method, intrauterine liquid is firstly removed, and then a sample is extracted, so that the repeated entry of the sample into the uterus can bring pain to a sampler, and in the severe case, external bacteria can enter the uterus to cause infection, so that a novel negative pressure endometrium sampler needs to be designed to overcome the technical defects.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a negative pressure endometrium sampler and a using method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a negative pressure endometrium sampler comprises a negative pressure adsorption device, a pressure adjusting device and a rotatable adsorption tube;
the negative pressure adsorption device comprises a needle tube, a piston matched with the needle tube and a guide outlet arranged at the side end of the needle tube;
the pressure regulating device comprises a pressure regulating pipe and a regulating valve arranged on the pressure regulating pipe; the pressure adjusting pipe is connected with the adsorption port of the needle tube;
the rotatable adsorption pipe comprises a rotary sleeve and an adsorption pipe assembly; the adsorption tube assembly comprises an adsorption tube and a protection tube arranged outside the adsorption tube; one end of the adsorption tube, which is far away from the rotary sleeve, is circumferentially provided with scrapers and suction holes; one end of the rotary sleeve is connected with the pressure regulating pipe, and the inside of the other end of the rotary sleeve is matched and rotatably connected with the outer wall of the adsorption pipe through a bearing; a rotating block is arranged at the connecting end of the adsorption tube and the rotating sleeve; a clamping block movably connected is arranged between the protective tube and the rotating block; the rotating block and the protection tube can be attracted by magnetic attraction; the top of the adsorption tube is provided with a seal head; when the clamping block is installed, the protective tube is in contact fit with the end face of the sealing head.
The regulating valve comprises a middle shaft, a baffle plate arranged on the middle shaft and a rotating disc arranged at the bottom of the middle shaft; ratchets are annularly arranged at the rotary connection part of the pressure adjusting pipe and the rotary disc; the rotating disc is hinged with a guide rod matched with the ratchet; a spring is arranged between the guide rod and the rotating disc; and a sealing plate for sealing the rotating disc is fixed on the middle shaft.
The end of the middle shaft is provided with a rotating rod.
The outer wall of the adsorption tube is axially provided with a chute; and a sliding rail matched with the sliding groove is axially arranged in the protective tube.
The top of the seal head is of a flat structure.
The outer wall of the protection pipe is provided with scale marks.
The application also comprises a using method of the negative pressure endometrium sampler, which comprises the following steps:
a) before use, the regulating valve is in a closed state, the fixture block is arranged between the rotating block and the protection tube, the front end of the protection tube is supported at the end socket, and the adsorption tube is completely positioned in the protection tube; so that the device does not scratch the inner wall when entering the cervix; closing a leading-out port on the needle tube;
b) when the sampler is used, the sampler is inserted into a uterus, the clamping block is removed after the sampler is inserted into a preset position, the rotating block pulls the protective tube due to the magnetic absorption effect, the protective tube is separated from the end socket, the absorption tube is exposed, then the regulating valve is in a completely open-close state, negative pressure is generated by drawing the piston in the needle tube to absorb liquid in the uterus, after the needle tube is fully absorbed, the regulating valve is in a closed state, a guide outlet on the needle tube is connected with the guide tube and is connected to an external collecting device, then the needle tube is extruded, and the liquid in the needle tube is discharged from the guide outlet along with the guide outlet due to the sealing of the regulating valve;
c) repeating b) until there is no excess fluid in the uterus;
d) closing a leading-out port on the needle tube; rotating the regulating valve to a preset slightly opened state, then screwing the rotating block, driving the adsorption tube to rotate through the rotation of the rotating block, further scraping endometrium on uterus by a scraper on the adsorption tube, drawing the needle tube after the belt rotates for a plurality of circles, adsorbing and scraping the removed endometrium through the suction hole, and repeatedly rotating the scraper and drawing the needle tube to realize sampling of the endometrium at different depth positions; meanwhile, when the piston is pulled upwards for one section, the large regulating valve is regulated to control the negative pressure.
Compared with the prior art, the invention has the beneficial effects that:
1. the device can remove intrauterine liquid before scraping endometrium, thereby improving the sampling quality of endometrium;
2. when the device enters the uterus by the matching use of the protective tube and the clamping block, the scraping and rubbing of the scraper and the cervix and other places are avoided, and the safety of a sampler is ensured when the device enters the uterus.
3. The quantitative rotation through the ratchet can delimit the pressure value of negative pressure effectively, guarantees when adsorbing, and to the pressure value of negative pressure the accuse, makes the sample gathered can be the clear demonstration this equipment of level gather in the position of difference, makes the more accurate position of judging the pathological change of medical personnel.
4. This device is through setting up the export of leading on the needle tubing, makes the device only need once insert to the uterus, alright carry out liquid discharge and the sampling work of different positions, significantly reduced, at the whole in-process of sampling, vagina and external contact reduce the risk of bacterial infection.
Drawings
FIG. 1 is a schematic structural view of the present invention after a fixture block is removed;
FIG. 2 is a schematic structural view of the present invention after a fixture block is installed;
FIG. 3 is a schematic front view of the fixture block of the present invention;
FIG. 4 is a partial schematic view of a sorbent tube according to the present invention;
FIG. 5 is a schematic cross-sectional view of a portion of a sorbent tube in accordance with the present invention;
FIG. 6 is a schematic sectional view of a pressure regulating tube according to the present invention;
fig. 7 is a partially schematic sectional view of a pressure regulating tube of the present invention.
In the figure, a needle tube 1, a guide outlet 1-1, an adsorption port 1-2, a pressure adjusting tube 2, a ratchet 2-2, an adjusting valve 3, a middle shaft 3-1, a rotating disc 3-1-1, a guide rod 3-1-2, a spring 3-1-3, a sealing plate 3-1-4, a baffle 3-2, a rotating rod 3-3, a rotating sleeve 4, an adsorption tube component 5, an adsorption tube 5-1, a rotating block 5-2, a sliding groove 5-3, a protection tube 5-4, a scale mark 5-4-1, a clamping block 5-5, a scraper 5-6, an adsorption hole 5-7 and a sealing head 5-8.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
Figures 1-7 show a negative pressure endometrial sampler comprising a negative pressure suction device, a pressure adjustment device, and a rotatable suction tube; the negative pressure adsorption device comprises a needle tube 1, a piston matched with the needle tube and a leading-out port 1-1 arranged at the side end of the needle tube; the leading-out port 1-1 and the drawing end of the needle tube 1 form an angle of 30-60 degrees; the angle of 30-60 degrees is used for ensuring that the position of the device and the uterus is not obstructed when an external catheter is connected into the export port, and the external device is convenient to mount and dismount; and the leading-out port is close to the adsorption port, an internal thread is arranged at the adsorption port 1-2 of the needle tube 1, the adsorption port 1-2 is in threaded connection with one end of the pressure regulating tube 2, and a threaded interface for connection is arranged on the leading-out port 1-1.
The pressure regulating device comprises a pressure regulating pipe 2 and a regulating valve 3 arranged on the pressure regulating pipe; the pressure adjusting pipe 2 is connected with the adsorption port 1-2 of the needle tube; the regulating valve comprises a middle shaft 3-1, a baffle plate 3-2 arranged on the middle shaft and a rotating disc 3-1-1 arranged at the bottom of the middle shaft; ratchets 2-2 are annularly arranged at the rotary connection part of the pressure adjusting pipe and the rotary disc; a guide rod 3-1-2 matched with the ratchet is hinged on the rotating disc; a spring 3-1-3 is arranged between the guide rod and the rotating disc; and a sealing plate 3-1-4 for sealing the rotating disc is fixed on the middle shaft. The end part of the middle shaft is provided with a rotating rod 3-3. The part of the device is mainly matched with the guide rod 3-1-2 through the ratchet 2-2, so that the middle shaft is in quantitative and unidirectional rotation, and the arrangement is to facilitate the conversion of a negative pressure control pressure value into a negative pressure value according to the tooth pitch of the ratchet, so that the adsorbed negative pressure is better controlled.
The rotatable adsorption pipe comprises a rotary sleeve 4 and an adsorption pipe assembly 5; the adsorption tube assembly comprises an adsorption tube 5-1 and a protection tube 5-4 arranged outside the adsorption tube; the outer wall of the adsorption tube is axially provided with a chute 5-3; and a sliding rail 5-4 matched with the sliding groove is axially arranged in the protective tube. The adsorption tube is connected with the protection tube in a sliding way; one end of the adsorption tube, which is far away from the rotary sleeve, is circumferentially provided with scrapers 5-6 and suction holes 5-7;
one end of the rotary sleeve 4 is connected with the pressure adjusting pipe 2, and the inside of the other end is matched and rotatably connected with the outer wall of the adsorption pipe 5-1 through a bearing; here, one end of the rotary sleeve 4 is rotatably connected to the adsorption tube 5-1, and the other end is fixedly connected to the pressure adjustment tube 2, but the connection relationship is not limited to the one disclosed in the embodiment, as long as it is ensured that one end of the rotary sleeve 4 is rotatably connected to the adsorption tube 5-1, and the other end is fixedly connected to the pressure adjustment tube 2.
A rotating block 5-2 is arranged at the connecting end of the adsorption tube and the rotating sleeve; a clamping block 5-5 in movable connection is arranged between the protective tube and the rotating block; the rotating block and the protection tube can be attracted by magnetic attraction; the top of the adsorption tube is provided with a seal head 5-8; the top of the end socket is of a flat structure, and the end sockets 5-8 are of flat structures, so that small impact can be generated when the end socket enters a uterus, and the safety of a user is guaranteed. When the clamping block is installed, the protective tube is in contact fit with the end face of the sealing head. The outer wall of the protection pipe is provided with scale marks.
A use method of the negative pressure endometrium sampler comprises the following steps:
a) before use, the rotating rod 3-3 is adjusted to enable the adjusting valve 3 to be in a closed state, the clamping block 5-5 is installed between the rotating block 5-2 and the protecting pipe 5-4, the front end of the protecting pipe 5-4 is supported at the end socket 5-8, the side face of the supported protecting pipe 5-4 is flush with the side face of the end socket 5-8, and the adsorption pipe is completely located in the protecting pipe; so that the device does not scratch the inner wall when entering the cervix; sealing an outlet 1-1 on the needle tube 1;
b) when in use, the sampler is inserted into uterus, the depth of the insertion is controlled through the scale mark 5-4-1 arranged on the side wall of the protective tube 5-4, when the sampler is inserted to a preset position, the clamping block 5-5 is taken off, the protective tube 5-4 is pulled outwards to be magnetically adsorbed with the rotating block 5-2, and the adsorption tube 5-1 is exposed; then screwing the adjusting rotary rod 3-3 to enable the adjusting valve 3 to be in a complete opening and closing state, absorbing liquid in the uterus through the drawing needle tube 1, screwing the adjusting rotary rod 3-3 to enable the adjusting valve 3 to be in a closed state after one tube is fully absorbed, connecting the outlet 1-1 on the needle tube 1 with a conduit to be connected to an external collecting device, then extruding the needle tube 1, and discharging the liquid in the needle tube 1 from the outlet 1-1 along with the closing of the adjusting valve 3;
c) repeating the operation b until no excess liquid is present in the uterus;
d) sealing an outlet 1-1 on the needle tube 1; rotating a small amount of adjusting rotary rods 3-3 to enable the adjusting valves 3 to be in a preset slightly-opened state, then screwing the rotating blocks 5-2, driving the adsorption tubes 5-1 to rotate through the rotation of the rotating blocks 5-2, further enabling the scrapers 5-6 to scrape endometrium in uterus, drawing the needle tubes 1 after the belt rotates for a plurality of circles, adsorbing and scraping the scraped endometrium through the adsorption holes 5-7, then gradually drawing the sampler, and repeatedly rotating the scrapers 5-6 and the drawn needle tubes 1 to realize sampling of the endometrium at different depth positions; meanwhile, when the piston is pulled for one section, the regulating valves 3 are enlarged to realize the control of negative pressure; the unidirectional fixed-distance rotation is realized by the matching of the middle shaft of the adjusting pipe 2 and the ratchets 2-2, so that the directional control of the negative pressure value is realized, and the integrity of the extracted endometrium is ensured.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (7)
1. A negative pressure endometrium sampler is characterized by comprising a negative pressure adsorption device, a pressure regulating device and a rotatable adsorption tube;
the negative pressure adsorption device comprises a needle tube, a piston matched with the needle tube and a guide outlet arranged at the side end of the needle tube;
the pressure regulating device comprises a pressure regulating pipe and a regulating valve arranged on the pressure regulating pipe; the pressure adjusting pipe is connected with the adsorption port of the needle tube;
the rotatable adsorption pipe comprises a rotary sleeve and an adsorption pipe assembly; the adsorption tube assembly comprises an adsorption tube and a protection tube arranged outside the adsorption tube; one end of the adsorption tube, which is far away from the rotary sleeve, is circumferentially provided with scrapers and suction holes; one end of the rotary sleeve is connected with the pressure regulating pipe, and the inside of the other end of the rotary sleeve is matched and rotatably connected with the outer wall of the adsorption pipe through a bearing; a rotating block is arranged at the connecting end of the adsorption tube and the rotating sleeve; a clamping block movably connected is arranged between the protective tube and the rotating block; the rotating block and the protection tube can be attracted by magnetic attraction; the top of the adsorption tube is provided with a seal head; when the clamping block is installed, the protective tube is in contact fit with the end face of the sealing head.
2. The negative-pressure endometrial sampler of claim 1, wherein the adjustment valve comprises a central shaft, a baffle plate disposed on the central shaft, and a rotating disk disposed at the bottom of the central shaft; ratchets are annularly arranged at the rotary connection part of the pressure adjusting pipe and the rotary disc; the rotating disc is hinged with a guide rod matched with the ratchet; a spring is arranged between the guide rod and the rotating disc; and a sealing plate for sealing the rotating disc is fixed on the middle shaft.
3. The negative pressure endometrial sampler of claim 2, wherein a rotating rod is disposed at an end of the central shaft.
4. The negative-pressure endometrial sampler according to claim 1, wherein a sliding groove is axially formed in the outer wall of the absorption tube; and a sliding rail matched with the sliding groove is axially arranged in the protective tube.
5. The negative pressure endometrial sampler of claim 1, wherein the top of the sealing head is a flat structure.
6. The negative pressure endometrial sampler of claim 1, wherein the outer wall of the protective tube is provided with graduations.
7. A method of using a negative pressure endometrial sampler as claimed in any of the claims 1 to 6, characterized in that the following steps are used:
a) before use, the regulating valve is in a closed state, the fixture block is arranged between the rotating block and the protection tube, the front end of the protection tube is supported at the end socket, and the adsorption tube is completely positioned in the protection tube; so that the device does not scratch the inner wall when entering the cervix; closing a leading-out port on the needle tube;
b) when the sampler is used, the sampler is inserted into a uterus, the clamping block is removed after the sampler is inserted into a preset position, the rotating block pulls the protective tube due to the magnetic absorption effect, the protective tube is separated from the end socket, the absorption tube is exposed, then the regulating valve is in a completely open-close state, negative pressure is generated by drawing the piston in the needle tube to absorb liquid in the uterus, after the needle tube is fully absorbed, the regulating valve is in a closed state, a guide outlet on the needle tube is connected with the guide tube and is connected to an external collecting device, then the needle tube is extruded, and the liquid in the needle tube is discharged from the guide outlet along with the guide outlet due to the sealing of the regulating valve;
c) repeating b) until there is no excess fluid in the uterus;
d) closing a leading-out port on the needle tube; the adjusting valve is rotated to be in a preset slightly-opened state, then the rotating block is screwed, the rotation of the rotating block drives the adsorption tube to rotate, so that the scraper on the adsorption tube scrapes endometrium in uterus, the needle tube is pulled after the adsorption tube rotates for a plurality of circles, the scraped endometrium is adsorbed and scraped through the suction hole, and the scraper and the pulled needle tube are repeatedly rotated to realize sampling of the endometrium at different depth positions; meanwhile, when the piston is pulled upwards for one section, the large regulating valve is regulated to control the negative pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579762.7A CN111588424A (en) | 2020-06-23 | 2020-06-23 | Negative pressure endometrium sampler and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579762.7A CN111588424A (en) | 2020-06-23 | 2020-06-23 | Negative pressure endometrium sampler and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111588424A true CN111588424A (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010579762.7A Pending CN111588424A (en) | 2020-06-23 | 2020-06-23 | Negative pressure endometrium sampler and using method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303836A (en) * | 2021-06-03 | 2021-08-27 | 浙江省立同德医院 | Gynaecology uses endometrium sampling device |
| CN113892981A (en) * | 2021-11-15 | 2022-01-07 | 中国人民解放军陆军特色医学中心 | Visual type sampler convenient to quickly separating tumor biopsy sample |
-
2020
- 2020-06-23 CN CN202010579762.7A patent/CN111588424A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303836A (en) * | 2021-06-03 | 2021-08-27 | 浙江省立同德医院 | Gynaecology uses endometrium sampling device |
| CN113892981A (en) * | 2021-11-15 | 2022-01-07 | 中国人民解放军陆军特色医学中心 | Visual type sampler convenient to quickly separating tumor biopsy sample |
| CN113892981B (en) * | 2021-11-15 | 2024-04-30 | 中国人民解放军陆军特色医学中心 | Visual sampler convenient to quick separation tumour biopsy sample |
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