A small molecule DNA sampling stick

Abstract

This invention belongs to the field of medical device technology, specifically a small molecule DNA sampling stick, including a sampling swab head and a cannula. The cannula is fitted over the sampling swab head, and a sliding groove is formed inside the cannula. A slider is slidably connected within the groove, and a push rod is connected to the bottom of the slider. The sampling swab head is positioned on top of the slider, and when not in use, the sampling swab head is completely contained within the cannula. When sampling small molecule DNA, saliva produced by talking or sneezing in the sampling environment, as well as dandruff, can contaminate the sampled DNA, leading to errors in the test results. This invention, by incorporating a cannula, reduces the contact between the sampling swab head and air during insertion into the patient's mouth, removal from the patient's mouth, and placement into the sampling tube, thereby reducing the possibility of contamination of the DNA sample by saliva or dandruff in the air and improving the accuracy of the test results.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical equipment, and particularly relates to a small-molecule DNA sampling rod. BACKGROUND

[0002] The sampling rod head is special dust-free cloth, which is flat, not easy to fall off, and good in liquid absorption. The rod body is made of environmentally friendly PP material, has excellent flexibility, and has a breakable notch. When testing or detecting, the sampling rod can be directly broken after sampling in the corresponding production environment and stored in the corresponding vial without hand contact.

[0003] Oral swab (oral exfoliated cell) sampling is a simple, painless and non-invasive DNA specimen collection method. This method is suitable for collecting DNA samples of people of any age, but when sampling small-molecule DNA, in a room with a small room and a large number of patients and patient families gathered, the saliva and dandruff produced by people talking or sneezing in such a sampling environment can contaminate the sampled DNA, especially the saliva of people wearing non-standard masks or not wearing masks can float in the air for a long time, which can easily cause the saliva to adhere to the sampling swab head, resulting in errors in the test and identification results. SUMMARY

[0004] In order to make up for the shortcomings of the prior art, the application provides a small-molecule DNA sampling rod, which solves the problem that the saliva and dandruff produced by people talking or sneezing in the sampling environment can contaminate the sampled DNA when sampling small-molecule DNA, resulting in errors in the test and identification results.

[0005] The technical scheme adopted by the application to solve the technical problem is that the small-molecule DNA sampling rod comprises a sampling swab head and a sleeve, the sleeve is sleeved outside the sampling swab head, a sliding groove is formed in the sleeve, a sliding block is slidably connected in the sliding groove, a push rod is connected to the bottom of the sliding block, and the sampling swab head is arranged at the top of the sliding block.

[0006] Preferably, the sampling swab head is provided with a protrusion embedded in the sliding block near the sliding block, the top end of the push rod is rotatably connected with the sliding block and extends above the sliding block, and the part of the push rod above the sliding block is threadedly connected with the sampling swab head.

[0007] Preferably, the diameter of the sampling swab head is smaller than the inner diameter of the sleeve.

[0008] Preferably, a pipe cover is sleeved on the top of the sleeve.

[0009] Preferably, the inner part of the pipe cover is provided with a cavity, the cavity is filled with medical alcohol, and a push plate is slidably connected between the inner walls of the cavity; the top of the push plate is fixedly connected with a pull rod, the pull rod is slidably connected with the pipe cover and extends above the pipe cover, a flow guide groove is formed in the pipe cover and communicates with the cavity, the flow guide groove faces the bottom of the push plate, and a connecting groove is formed in the side wall of the cavity.

[0010] Preferably, a plurality of flow guide grooves are uniformly arranged, and the outlet of the flow guide groove corresponds to the inner wall of the sleeve when the pipe cover is arranged on the sleeve.

[0011] Preferably, the sleeve is provided with a baffle, and the baffle is transparent.

[0012] Preferably, the baffle is made of rubber material, the baffle is fixedly connected with the sleeve, and the connection between the baffle and the sleeve extends to the hand holding position.

[0013] Preferably, the baffle is slidably arranged on the sleeve, and the baffle is made of a material that can be easily folded.

[0014] Preferably, a plurality of limiting strips are fixedly connected to the inner wall of the sleeve.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The small molecule DNA sampling rod disclosed by the present application reduces the contact of the sampling swab head with air during the process of being put into the patient's mouth, being taken out of the patient's mouth and being put into the sampling test tube, reduces the possibility of pollution of the DNA sample by saliva or dandruff in the air, and improves the accuracy of the detection and identification result.

[0017] 2. The small molecule DNA sampling rod disclosed by the present application is provided with a sampling swab head which is threadedly connected with the part of the push rod above the sliding block, so that the sampling swab head is more convenient to take off, the physical strength for taking off the sampling swab head is saved, the trouble of accidental falling of the sampling swab head in use through the sliding connection mode is eliminated, and the sampling swab head is more inconvenient to break.

[0018] 3. The small molecule DNA sampling rod disclosed by the present application is provided with a sampling swab head with a diameter smaller than the inner diameter of the sleeve, so as to improve the accuracy of the detection and identification result of the sample, the pipe cover is taken off when sampling, the pipe cover is covered on the sleeve again when the sampling swab head is taken off, and the bacteria contacted in the sleeve are prevented from being spread through the discarded sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below with reference to the drawings.

[0020] Fig. 1 is a perspective view of the present application;

[0021] Fig. 2 This is a cross-sectional view of the present invention;

[0022] In the diagram: 1. Sampling swab head; 2. Sleeve; 21. Slide groove; 22. Slider; 23. Push rod; 3. Tube cap; 31. Cavity; 32. Push plate; 33. Pull rod; 34. Guide groove; 35. Connecting groove; 4. Baffle; 5. Limiting strip. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figs. 1-2 As shown, the present invention provides a small molecule DNA sampling stick, which includes a sampling swab head 1 and a sleeve 2. The sleeve 2 is sleeved over the sampling swab head 1. A groove 21 is provided inside the sleeve 2. A slider 22 is slidably connected inside the groove 21. A push rod 23 is connected to the bottom of the slider 22. The sampling swab head 1 is located at the top of the slider 22. When not in use, the sampling swab head 1 is completely contained inside the sleeve 2.

[0025] In existing technologies, when sampling small molecule DNA, saliva produced by people talking or sneezing in the sampling environment and dandruff can contaminate the sampled DNA, leading to errors in the test and identification results.

[0026] According to this invention, by setting a sleeve 2, when DNA samples need to be collected from the patient's oral mucosa, the sleeve 2 is inserted into the patient's mouth, and then the push rod 23 pushes the slider 22, causing the slider 22 to slide in the groove 21, which in turn causes the sampling swab head 1 to extend out of the patient's mouth. Then, the sampling swab head 1 scrapes the DNA sample from the oral mucosa. After the sampling is completed, the push rod 23 is pulled, causing the push rod 23 to drive the slider 22 to slide in the groove 21, which in turn causes the slider 22 to retract the sampling swab head 1 into the sleeve 2. After the collection is completed, the sleeve 2 is removed from the mouth and placed into the sampling test tube. Then, the sampling swab head 1 is extended again and removed by breaking or other means. The sampling test tube is then sealed to complete the DNA sample collection. This reduces the contact between the sampling swab head 1 and the air during the process of inserting it into the patient's mouth, removing it from the patient's mouth, and placing it into the sampling test tube, thereby reducing the possibility of saliva or dandruff in the air contaminating the DNA sample and improving the accuracy of the detection and identification results.

[0027] As one of the embodiments of the present application, the sampling swab head 1 is provided with a protrusion embedded in the sliding block 22 near the sliding block 22, the top end of the push rod 23 is rotationally connected with the sliding block 22 and extends above the sliding block 22, and the part of the push rod 23 above the sliding block 22 is threadedly connected with the sampling swab head 1; during operation, the material at the connection between the sampling swab head 1 and the push rod 23 is hard plastic, the sampling swab head 1 and the push rod 23 are threadedly connected, when the sampling swab head 1 is removed, one hand holds the sleeve 2 and the other hand rotates the push rod 23 to loosen the thread, so that the push rod 23 is separated from the sampling swab head 1, the sampling swab head 1 falls into the sampling test tube under the action of its own gravity, the protrusion embedded in the sliding block 22 is provided to ensure that the sampling swab head 1 does not rotate with the push rod 23 when the push rod 23 is rotated, so that the sampling swab head 1 is more convenient to remove, the physical strength for removing the sampling swab head 1 is saved, the trouble of accidental falling of the sampling swab head 1 in the sliding connection mode is eliminated, and the trouble of relatively inconvenient breaking of the integrated sampling swab head 1 and easy damage of the sampling swab head 1 and the sampling test tube is eliminated.

[0028] As one of the embodiments of the present application, the diameter of the sampling swab head 1 is smaller than the inner diameter of the sleeve 2; during operation, the sampling swab head 1 does not contact the inner wall of the sleeve 2 during the process of retracting into the sleeve 2 after sampling due to the smaller diameter, so that the occurrence of the situation that the taken sample adheres to the inner wall of the sleeve 2 or the impurities in the sleeve 2 adhere to the sampling swab head 1 is reduced, the quality of the taken sample is ensured, and the spread of the sample with bacteria to the sleeve 2 is prevented when the sleeve 2 is discarded, so that the spread of bacteria is prevented.

[0029] As one of the embodiments of the present application, the top of the sleeve 2 is provided with a pipe cover 3; during operation, the sleeve 2 is sealed by the pipe cover 3 before sampling, so that the saliva bacteria in the air is prevented from contacting the sampling swab head 1, the accuracy of the identification result of the sample is improved, the pipe cover 3 is removed when sampling, and the pipe cover 3 is covered on the sleeve 2 again when the sampling swab head 1 is removed, so that the bacteria contacted in the sleeve 2 are prevented from spreading through the discarded sleeve 2.

[0030] As an embodiment of the present application, the inside of the pipe cover 3 is provided with a cavity 31 filled with medical alcohol, and a push plate 32 is slidingly connected between the inner walls of the cavity 31; the top of the push plate 32 is fixedly connected with a pull rod 33, which is slidingly connected with the pipe cover 3 and extends above the pipe cover 3; the pipe cover 3 is provided with a flow guide groove 34 connected to the cavity 31, which is directed to the bottom of the push plate 32; and a connecting groove 35 is formed in the side wall of the cavity 31; in operation, the push plate 32 is initially located at the bottom of the cavity 31, and the medical alcohol is filled between the top of the push plate 32 and the inner wall of the cavity 31, so that the push plate 32 is not located at the position of the connecting groove 35 and blocks the opening of the flow guide groove 34, preventing the medical alcohol from flowing out of the flow guide groove 34; after the pipe cover 3 is placed on the sampling cover, the sleeve 2 is vertically placed, so that the pull rod 33 is upward, and the pull rod 33 is pulled to move the push plate 32 until the push plate 32 is located at the middle of the connecting groove 35 in the vertical direction, so that the medical alcohol above the push plate 32 can flow to the lower part of the push plate 32 through the connecting groove 35, and the push plate 32 is away from the opening of the flow guide groove 34, so that the flow guide groove 34 is connected to the outside, and the medical alcohol in the cavity 31 flows out of the flow guide groove 34 into the sleeve 2, thereby killing the bacteria in the sleeve 2 and preventing the spread of bacteria caused by the discarded sleeve 2.

[0031] As an embodiment of the present application, the flow guide groove 34 is uniformly provided with a plurality of flow guide grooves, and the outlet of the flow guide groove 34 corresponds to the inner wall of the sleeve 2 when the pipe cover 3 is placed on the sampling cover; in operation, the outlets of the plurality of flow guide grooves 34 are arranged at the positions corresponding to the inner wall of the sleeve 2, so that the medical alcohol can uniformly flow along the inner wall of the sleeve 2 when the medical alcohol is squeezed out, and the inner wall of the sleeve 2 is uniformly coated with alcohol, thereby improving the effect of killing bacteria and reducing the occurrence of bacterial growth caused by uneven alcohol coating.

[0032] As an embodiment of the present application, the sleeve 2 is provided with a baffle 4, which is transparent; in operation, the baffle 4 is arranged to block the hand of the sampling personnel from the mouth and nose of the patient, preventing the sampling personnel from touching the mouth and nose of the patient after contacting the bacteria and causing the spread of bacteria, and preventing the bacteria in the mouth and nose of the patient from being sprayed to the sampling personnel, thereby improving the safety during sampling, and the transparent baffle 4 can facilitate the observation of the sampling personnel during sampling.

[0033] The first embodiment of the blocking piece, the blocking piece 4 is made of rubber material, the blocking piece 4 is fixedly connected with the sleeve 2, and the connecting position of the blocking piece 4 and the sleeve 2 extends to the hand holding position; during operation, the sampler holds the extended connecting position of the blocking piece 4, so that the friction between the sampler's hand and the sleeve 2 is increased, the operation of the sampler is facilitated, the sampler is convenient to hold, and the sample is prevented from falling.

[0034] The second embodiment of the blocking piece, the blocking piece 4 is slidably arranged on the sleeve 2, and the blocking piece 4 is made of foldable material; during operation, the blocking piece 4 is slidably arranged on the sleeve 2, the position of the blocking piece 4 is adjusted, the operation of the sampler is facilitated, the blocking piece 4 is slid to the covering range of the pipe cover 3 before the pipe cover 3 is covered after sampling is completed, then the blocking piece 4 is folded and covered by the pipe cover 3, so that the blocking piece 4 is sealed, and the bacteria on the blocking piece 4 is prevented from breeding and spreading after being discarded.

[0035] As one embodiment of the application, the inner wall of the sleeve 2 is circumferentially fixedly connected with a set of limiting strips 5; during operation, by arranging the limiting strips 5, when the sampling swab head 1 is separated from the sleeve 2, the sampling swab head 1 is prevented from being inclined during falling, so that the sampling swab head 1 is clamped between the inner walls of the sleeve 2, and when the sampling swab head 1 is inclined, only the limiting strips 5 with relatively small area are contacted, so that the amount of samples on the sampling swab head 1 is reduced.

Claims

1. A small molecule DNA sampling swab comprising a sampling swab head (1) characterised in that: Also include the sleeve (2), the sleeve (2) is set outside the sampling swab head (1), the sleeve (2) is provided with a sliding groove (21), the sliding groove (21) is slidably connected with the sliding block (22), the bottom of the sliding block (22) is connected with the push rod (23), the sampling swab head (1) is arranged on the top of the sliding block (22), and the sampling swab head (1) is completely accommodated in the sleeve (2) in the state of not being used;The top of the sleeve (2) is provided with a pipe cover (3);The sleeve (2) is provided with a baffle (4); The inner wall of the sleeve (2) is circumferentially connected with a group of limiting strips (5); The sampling swab head (1) is provided with a protrusion embedded in the sliding block (22) near the sliding block (22), the top end of the push rod (23) is rotatably connected with the sliding block (22) and extends above the sliding block (22), and the part of the push rod (23) above the sliding block (22) is threadedly connected with the sampling swab head (1); The inside of the pipe cover (3) is provided with a cavity (31), the cavity (31) is filled with medical alcohol, and the inner wall of the cavity (31) is slidably connected with a push plate (32); The top of the push plate (32) is fixedly connected with a pull rod (33), the pull rod (33) is slidably connected with the pipe cover (3) and extends above the pipe cover (3), the pipe cover (3) is provided with a flow guide groove (34) connected to the cavity (31), the flow guide groove (34) faces the bottom of the push plate (32), and the side wall of the cavity (31) is provided with a connecting groove (35); The flow guide grooves (34) are uniformly provided with a plurality of flow guide grooves (34), and when the pipe cover (3) is covered, the outlet of the flow guide groove (34) corresponds to the inner wall of the sleeve (2).

2. The small molecule DNA sampling stick of claim 1, wherein: The diameter of the sampling swab head (1) is less than the inner diameter of the sleeve (2).

3. The small molecule DNA sampling stick of claim 1, wherein: The baffle (4) is transparent; The baffle (4) is made of rubber material, the baffle (4) and the sleeve (2) are fixedly connected, and the connection between the baffle (4) and the sleeve (2) extends to the hand holding position.

4. The small molecule DNA sampling stick of claim 3, wherein: The baffle (4) is slidably arranged on the sleeve (2), and the baffle (4) is made of a material that can be easily folded.

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