Cervical self-sampling and inspection device

Abstract

The present invention discloses a cervical self-sampling and inspection device, which relates to the technical field of gynecological examination, and comprises an inner tube and a piston. A front end sealing cover is provided at one end of the inner tube, and a rear end sealing cover is provided at the other end of the inner tube. A liquid hole is penetrated by the front end sealing cover, and the piston is slidably installed in the inner tube. An end portion of the piston close to the front end sealing cover forms a liquid storage cavity with the inner wall of the inner tube and the front end sealing cover, and the other end of the piston forms a negative pressure cavity with the inner wall of the inner tube and the rear end sealing cover. A control component for controlling the piston to slide toward the front end sealing cover is installed on the outer side of the inner tube. The present invention and the device set a negative pressure cavity, and utilize the piston to push the flushing liquid out of the liquid hole when sliding in the inner tube, and at the same time, negative pressure is formed in the negative pressure cavity, so that the piston has the function of automatic rebound. The whole operation is convenient, the structure is simple, the design is reasonable, there is no need to set a reset spring, etc., the production and processing are simple, and the manufacturing cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of gynecological examination, in particular to a cervical self-sampling and examination device. Background Art

[0002] Cervicitis is a common gynecological disease, but severe inflammation can turn into cervical cancer, which seriously threatens the life and health of patients, so it is usually necessary to take samples for cervicitis patients. The current cervical sampling requires doctors to collect samples, usually with a cervical brush. This method has the following disadvantages: First, the cervix needs to be dilated first, and then the cervical brush needs to be taken out through the vagina after the cervical sampling. In the middle, it is easy to touch the vagina and vaginal secretions, causing the cervical secretions to mix with the vaginal secretions. In addition, the secretions will also slip and mix during the dilation process, resulting in inaccurate sampling; second, sampling requires manual wiping on the cervical wall, but the space inside the cervix is ​​small, which is not easy to operate, troublesome, time-consuming and labor-intensive, and has low work efficiency.

[0003] In view of the above problems, the Chinese patent "CN216455112U" discloses an automatic rebound irrigation sampling tube, which includes a tube body and a push rod, wherein a sampling cavity is provided in the tube body, the push rod is provided in the sampling cavity, a rubber plug is provided at the front end of the push rod, a sampling hole is provided at the front end of the tube body, a sealing plug is provided in the sampling hole, and an automatic rebound mechanism is also provided on the push rod. Compared with the prior art, the present invention has the functional characteristics of integrating sampling and storage, and the sampling process can automatically rebound, making sampling more comfortable and storage more convenient. The application adds a reset spring in the tube body so that it can automatically rebound during the sampling process, but the application still has the following problems:

[0004] 1. The sampling tube is provided with corresponding components such as a return spring, which makes the production and processing technology more complicated and increases the manufacturing cost of the sampling tube;

[0005] 2. Due to the arrangement of corresponding components such as a return spring, the structure is complex and the sampling tube is more susceptible to damage during carrying or use.

[0006] In view of this, there is an urgent need for a sampling tube that is simple to produce and process, low in cost, not easily damaged, and can automatically rebound. Summary of the invention

[0007] In view of the problems existing in the prior art, the present invention solves the problems with the following technical structure.

[0008] To achieve the above object, the present invention adopts the following technical solution:

[0009] The cervical self-sampling and inspection device comprises an inner tube and a piston, wherein one end of the inner tube is provided with a front end cover, the other end of the inner tube is provided with a rear end cover, and the front end cover is provided with a liquid hole through it;

[0010] The piston is slidably installed in the inner tube, and one end of the piston close to the front end cover forms a liquid storage cavity with the inner wall of the inner tube and the front end cover. The liquid storage cavity is pre-filled with flushing liquid, and the other end of the piston forms a negative pressure cavity with the inner wall of the inner tube and the rear end cover;

[0011] The inner tube is provided with a control assembly for controlling the piston to slide toward one side of the front end cover.

[0012] It is further characterized in that

[0013] The control assembly comprises a push tube for pushing the piston, and the push tube is arranged on the inner tube.

[0014] The push tube sliding sleeve is arranged on the outside of the inner tube, and the annular surface of the inner tube is provided with a through groove along the axial direction of the inner tube. A piston bracket is installed on the piston, and the suspended end of the piston bracket extends to the outside of the inner tube through the through groove. The suspended end of the piston bracket points to one end of the rear end cover, and one end of the push tube abuts against the suspended end of the piston bracket.

[0015] There are at least two through slots, and the piston brackets correspond to and match the through slots one by one.

[0016] The suspended end of the push tube is provided with a push handle.

[0017] The piston comprises a piston front end, a piston rear end and a support column. The piston front end and the piston rear end are fixedly connected via the support column. The suspension ends of the piston front end and the piston rear end are both provided with rubber plugs.

[0018] An outer tube is coaxially sleeved on the outer side of the push tube. The outer tube is slidably mounted on the push tube. One end of the outer tube is connected to the front end cover.

[0019] The outer tube is provided with two finger rings on an annular surface at one end close to the push handle.

[0020] A hole plug is arranged at the liquid passage hole.

[0021] The above structure of the present invention can achieve the following beneficial effects:

[0022] (1) The device sets a negative pressure chamber, and uses the piston to push the flushing liquid out of the liquid hole when sliding in the inner tube. At the same time, negative pressure is formed in the negative pressure chamber, so that the piston has the function of automatic rebound. The liquid hole sucks in the flushing liquid sample mixed with the secretions of the cervical opening, which is convenient for subsequent inspection. The whole operation is convenient, the structure is simple, the design is reasonable, there is no need to set a reset spring, etc., the production and processing are simple, and the manufacturing cost is low.

[0023] (2) By providing an outer tube, two finger rings on the outer tube, and a push handle on the push tube, when using the sampling tube, the fingers are hooked into the two finger rings and the palms are pressed against the push handle, making it more convenient to use the device. This enables the examinee to collect the sample at home and send it for examination, especially in the application of cervical cancer screening, which can save a lot of professional sampling time and facilitate the participation of the masses.

[0024] (3) The device is provided with an outer tube on the outside, which has the function of dilating the uterus, making it easy to insert into the vagina so that the liquid outlet hole on the inner tube is aligned with the cervical opening, and also has a certain protective effect on the internal structure of the sampler, making it not easy to be damaged and having a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of this embodiment;

[0026] Figure 2 is a structural cross-sectional view of this embodiment;

[0027] Figure 3 This is a cross-sectional view of the structure of this embodiment when in use;

[0028] Figure 4 Schematic diagram of the structure of the piston in this embodiment;

[0029] Figure 5 Schematic diagram of the structure of the inner tube in this embodiment.

[0030] In the figure: 1, inner tube; 11, front end cover; 111, liquid hole; 12, rear end cover; 13, liquid storage chamber; 14, negative pressure chamber; 15, through groove; 2, piston; 21, front end of piston; 22, rear end of piston; 23, bracket column; 24, rubber plug; 25, piston bracket; 3, push tube; 31, push handle; 4, outer tube; 41, finger ring. DETAILED DESCRIPTION

[0031] Example 1, reference Figure 1-5 The cervical self-sampling and inspection device shown comprises an inner tube 1 and a piston 2. The piston 2 comprises a piston front end 21, a piston rear end 22, and a support column 23. The piston front end 21 and the piston rear end 22 are fixedly connected by the support column 23. The suspension ends of the piston front end 21 and the piston rear end 22 are both provided with rubber plugs 24. One end of the inner tube 1 is provided with a front end cover 11, and the other end of the inner tube 1 is provided with a rear end cover 12. The front end cover 11 is penetrated by a liquid hole 111, and a hole plugging plug is provided at the liquid hole 111.

[0032] The piston 2 is slidably installed in the inner tube 1. One end of the piston 2 close to the front end cover 11 forms a liquid storage chamber 13 with the inner wall of the inner tube 1 and the front end cover 11. The liquid storage chamber 13 is pre-filled with flushing liquid 133. The other end of the piston 2 forms a negative pressure chamber 14 with the inner wall of the inner tube 1 and the rear end cover 12.

[0033] A control component for controlling the piston 2 to slide toward the front end cover 11 is installed on the outer side of the inner tube 1, and the control component includes a push tube 3 for pushing the piston 2, and the push tube 3 is coaxially slidably sleeved on the inner tube 1 from one end of the rear end cover 12. The annular surface of the inner tube 1 is provided with a through groove 15 along the axial direction of the inner tube 1. A piston bracket 25 is installed on the piston 2, and the connecting end of the piston bracket 25 can be installed on the front end 21 of the piston, the rear end 22 of the piston or the bracket column 23. The most preferred installation method is that the connecting end of the piston bracket 25 is installed on the bracket column 23, and the suspension end of the piston bracket 25 extends to the outside of the inner tube 1 through the through groove 15, and the suspension end of the piston bracket 25 points to one end of the rear end cover 12, and one end of the push tube 3 abuts against the suspension end of the piston bracket 25.

[0034] Based on the above structure, by slidingly setting the piston 2 in the inner tube 1, when sampling is needed, the plug at the liquid hole 111 is removed, the sampling tube is slowly inserted into the vagina to the cervical opening, and the push tube 3 is manually pushed to move to the side of the liquid hole 111. The front end of the push tube 3 abuts against the end of the piston bracket 25, so that the piston 2 moves to the side of the liquid hole 111, and the flushing liquid flows out from the liquid hole 111 to flush the cervical secretions, and the flushing liquid in the compressed liquid storage chamber 13 flows out, and the negative pressure chamber 14 becomes larger At this time, negative pressure is formed in the negative pressure chamber 14, so that the piston 2 has suction to move toward the side of the rear end cover 12, and the flushing liquid all flows out of the liquid storage chamber 13, and then the push tube 3 is no longer pushed forward. At this time, the liquid hole 111 is facing the liquid to be sampled. At this time, the negative pressure chamber 14 is under negative pressure, so that the piston 2 moves toward the side of the rear end cover 12. At this time, negative pressure is generated in the liquid storage chamber 13, and the liquid to be sampled enters the liquid storage chamber 13 through the liquid hole 111 until the sampling is completed, and then the liquid hole 111 is blocked with a plug.

[0035] There are at least two through grooves 15 , and the piston brackets 25 correspond to and match the through grooves 15 one by one. By providing multiple through grooves 15 and matching multiple piston brackets 25 , the piston 2 can be pushed to slide in the inner cavity of the inner tube 1 more smoothly.

[0036] Among them, a push handle 31 is provided at the suspended end of the push tube 3, and an outer coaxial sleeve is provided on the outer side of the push tube 3. The outer tube 4 is slidably installed on the push tube 3, and one side end of the outer tube 4 is connected to the front end cover 11. Two finger rings 41 are provided on the annular surface of one end of the outer tube 4 close to the push handle 31. By providing the outer tube 4, two finger rings 41 on the outer tube 4, and the push handle 31 on the push tube 3, when using the sampling tube, the fingers are pinched in the two finger rings 41, and the palm is against the push handle 31, making it more convenient to use the device.

[0037] The working principle of the present invention is as follows: by slidingly setting the piston 2 in the inner tube 1, when sampling is needed, the plug at the liquid hole 111 is removed, the sampling tube is slowly inserted into the vagina to the cervical opening, and the push tube 3 is manually pushed to move to the side of the liquid hole 111. The front end of the push tube 3 abuts against the end of the piston bracket 25, so that the piston 2 moves to the side of the liquid hole 111, and the flushing liquid flows out from the liquid hole 111 to flush the cervical secretions, and the flushing liquid in the compressed liquid storage chamber 13 flows out, and the negative pressure chamber 14 becomes larger. At this time, negative pressure is formed in the negative pressure chamber 14, so that the piston 2 has suction to move toward the side of the rear end cover 12, and the flushing liquid all flows out of the liquid storage chamber 13, and then the push tube 3 is no longer pushed forward. At this time, the liquid hole 111 is facing the liquid to be sampled. At this time, the negative pressure chamber 14 is under negative pressure, so that the piston 2 moves toward the side of the rear end cover 12. At this time, negative pressure is generated in the liquid storage chamber 13, and the liquid to be sampled enters the liquid storage chamber 13 through the liquid hole 111 until the sampling is completed, and then the liquid hole 111 is blocked with a plug.

[0038] By providing the outer tube 4, two finger rings 41 on the outer tube 4 and a push handle 31 on the push tube 3, when using the device, fingers are inserted into the two finger rings 41 and the palm is pressed against the push handle 31, making it more convenient to use the device.

[0039] The device is provided with a negative pressure chamber 14, and utilizes the negative pressure formed in the negative pressure chamber 14 when the piston 2 slides in the inner tube 1, so that the piston 2 has the function of automatic rebound. The structure is simple and the design is reasonable. There is no need to set a return spring, etc., the production and processing are simple, and the manufacturing cost is low.

[0040] The device is provided with an outer tube 4 outside, which has the function of dilating the uterus, and is convenient for inserting into the vagina so that the inner tube 1 is aligned with the cervical opening through the liquid hole 111. The outer tube 4 also has a certain protective effect on the internal structure of the sampler, making it not easy to be damaged and having a longer service life.

[0041] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A cervical self-sampling and inspection device, characterized in that: It comprises an inner tube (1) and a piston, wherein one end of the inner tube (1) is provided with a front end cover (11), the other end of the inner tube (1) is provided with a rear end cover (12), and the front end cover (11) is provided with a liquid hole (111) penetrating therethrough; The piston is slidably mounted in the inner tube (1); one end of the piston close to the front end cover (11) forms a liquid storage chamber (13) with the inner wall of the inner tube (1) and the front end cover (11); the liquid storage chamber (13) is pre-filled with flushing liquid; the other end of the piston forms a negative pressure chamber (14) with the inner wall of the inner tube (1) and the rear end cover (12); The inner tube (1) is equipped with a control component for controlling the piston to slide toward one side of the front end cover (11); The control assembly comprises a push tube (3) for pushing the piston, wherein the push tube (3) is arranged on the inner tube (1); The push tube (3) is slidably sleeved on the outside of the inner tube (1); the annular surface of the inner tube (1) is provided with a through groove (15) along the axial direction of the inner tube (1); a piston bracket (25) is mounted on the piston; the suspension end of the piston bracket (25) extends to the outside of the inner tube (1) through the through groove (15); the suspension end of the piston bracket (25) points to one end of the rear end cover (12); one end of the push tube (3) abuts against the suspension end of the piston bracket (25); An outer tube (4) is coaxially sleeved on the outer side of the push tube (3). The outer tube (4) is slidably mounted on the push tube (3). One end of the outer tube (4) is connected to a front end cover (11).

2. The cervical self-sampling and inspection device according to claim 1, characterized in that: There are at least two through slots (15), and the piston brackets (25) correspond to and match the through slots (15) in a one-to-one manner.

3. The cervical self-sampling and inspection device according to claim 1, characterized in that: A push handle (31) is provided at the suspended end of the push tube (3).

4. The cervical self-sampling and inspection device according to claim 1, characterized in that: The piston comprises a piston front end (21), a piston rear end (22), and a support column (23); the piston front end (21) and the piston rear end (22) are fixedly connected via the support column (23); and the suspension ends of the piston front end (21) and the piston rear end (22) are both provided with rubber plugs (24).

5. The cervical self-sampling and inspection device according to claim 1, characterized in that: Two finger rings (41) are provided on an annular surface at one end of the outer tube (4) close to the push handle (31).

6. The cervical self-sampling and inspection device according to claim 1, characterized in that: A hole plug is provided at the liquid passage hole (111).

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