Virus sampling assembly
By designing a limiting block and an anti-detachment hook structure, the problem of difficulty in controlling the strength of the sampling rod is solved, and the sampling head is stably kept in the sampling tube, improving the controllability and safety of the sampling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGYUAN CENT HOSPITAL
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-29
Smart Images
Figure CN224299235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and in particular to virus sampling components. Background Technology
[0002] This invention relates to a virus sampling assembly for collecting pharyngeal secretion samples for pathogen detection. It includes a sampler and a sampling tube. The sampler comprises a sampling rod and a sampling head connected to the front end of the sampling rod. The sampling tube includes a tube body and a cap covering the tube body, and contains a preservation solution. Existing sampling rods have notches on both sides of the front end, resulting in lower strength and breakage of the sampling tube at these points.
[0003] During virus sampling, hold the sampling rod and insert the sampling head into the pharynx to collect secretions. Then remove the sampler, insert it into the tube, and break the tube at its weakest point. Specifically, tilt the sampler so the sampling head rests against the inner wall of the tube, the sampling rod rests against the tube opening, and the weakest part of the sampling rod is outside and close to the opening. Then, press the tube cap down on the sampling rod, pressing it against the opening. Finally, hold the sampling rod and press down on its rear to bend it, ultimately breaking it at its weakest point.
[0004] If the force required to break the sampling rod at its weakest point in the existing virus sampling assembly is large, the sampling rod is not easy to break; if it is small, the sampling rod is subjected to bending force during use and may break when collecting secretion samples. Balancing these two scenarios, the force required to break the weakest point of the existing sampling rod is often large, making breakage inconvenient; furthermore, during the breakage process, the rear of the sampling rod is pressed down, causing its front end to tend to tilt upwards, which may cause the sampling head to slide along the inner wall of the tube, resulting in the sampling head being ejected. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a virus sampling component including a pull-out sampler.
[0006] The technical solution adopted in this utility model is as follows: The virus sampling component includes a sampler and a sampling tube. The sampler includes a sampling rod and a sampling head connected to the front end of the sampling rod. The sampling tube includes a tube body and a cap covering the tube body. The sampling rod includes a front part and a rear part. The rear end of the front part has an insertion hole arranged axially along the front part of the rod. The rear part of the rod is inserted into the insertion hole and is interference-fitted with the insertion hole. The sampling tube includes a limiting block located inside the tube body and close to the tube opening of the tube body. The limiting block is connected to the tube body and has a U-shaped opening. The width of the U-shaped opening matches the size of the rear part of the rod. When the sampling rod extends into the tube body and the rear part of the rod enters the U-shaped opening, and the front part of the rod is below the limiting block, pulling the rear part of the rod back will push the front part of the rod down.
[0007] Furthermore: the rear of the rod has an anti-detachment groove; the sampler includes an anti-detachment hook, which includes a hook piece and a hook head. The hook piece is arranged in the front-rear direction and connected to the rear end of the front of the rod. The hook piece is elastic. The hook head is connected to the rear end of the hook piece. The hook head is shaped like a right triangle. One right-angled side of the hook head is in the front-rear direction, the other right-angled side of the hook head faces forward, the hypotenuse of the hook head faces backward, and the tip of the hook head is embedded in the anti-detachment groove.
[0008] The sampling tube includes a swing drive plate and a top plate. Both the swing drive plate and the top plate are located below the limiting block and connected to the limiting block. The top plate rests on the inclined surface of the hook head, which can cause the hook head to swing outward, so that the hook head leaves the anti-detachment groove. When the hook head leaves the anti-detachment groove, the top plate contacts the rear end of the front part of the rod.
[0009] Furthermore, the swing drive plate is located near the bottom of the U-shaped opening; there are two top-bottom plates, which are located on the left and right sides of the U-shaped opening respectively.
[0010] Furthermore, the cross-section of the rear part of the rod is square.
[0011] Furthermore, the front of the rod has a gas hole that extends from the side of the front of the rod to the bottom of the insertion hole.
[0012] Furthermore, the end of the U-shaped opening narrows to form an inlet.
[0013] The beneficial effects of this utility model are as follows: The specimen sampling method of this utility model is the same as that of the prior art. After sampling, the sampling rod is inserted into the tube, with the rear part of the rod entering the U-shaped opening and the front part of the rod positioned below the limiting block; then the rear part of the rod is pulled back, and the rear end of the front part of the rod abuts against the lower surface of the limiting block; then the rear part of the rod is pulled back with force, and because the limiting block restricts the rearward movement of the front part of the rod, the rear part of the rod is pulled out of the insertion hole, which is equivalent to the limiting block pushing down the front part of the rod; the sampling head falls into the preservation liquid, completing the sampling.
[0014] It is evident that during the removal of the rear part of the sampling rod (equivalent to the breakage of existing sampling rods), the sampling head will not pop out. Furthermore, during the sampling process, when the sampling rod is held and the sampling head is pressed against the patient's pharyngeal wall, the sampling rod is subjected to bending force, which does not cause the rear part of the rod to be pulled out. Therefore, the amount of interference fit between the rear part of the rod and the insertion hole can be smaller, making it easier to remove the rear part of the rod later. Attached Figure Description
[0015] Figure 1 This is a structural diagram of the virus sampling component;
[0016] Figure 2 This is a structural diagram of the connection between the front and rear parts of the sampler's rod;
[0017] Figure 3 Here is a diagram of the sampling tube structure;
[0018] Figure 4 for Figure 3 AA section view;
[0019] Figure 5 Step A is shown in the diagram for pulling out the rear of the rod;
[0020] Figure 6 Figure B shows the step of pulling out the rear of the rod;
[0021] Figure 7 Figure C shows the step of pulling out the rear of the rod;
[0022] Reference numerals: Sampler 1, Sampling rod 11, Front part of rod 111, Insertion hole 1111, Gas hole 1112, Rear part of rod 112, Anti-detachment groove 1121, Anti-detachment hook 113, Hook piece 1131, Hook head 1132, Sampling head 12, Sampling tube 2, Tube body 21, Tube cap 22, Limiting block 23, U-shaped opening 231, Inlet 2311, Swing drive piece 24, Top and bottom piece 25. Detailed Implementation
[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0024] like Figures 1 to 4 As shown, the virus sampling assembly includes a sampler 1 and a sampling tube 2. The sampler 1 includes a sampling rod 11 and a sampling head 12 connected to the front end of the sampling rod 11. The sampling tube 2 includes a tube body 21 and a tube cap 22 covering the tube body 21. The sampling rod 11 includes a front part 111 and a rear part 112. The rear end of the front part 111 has an insertion hole 1111 arranged axially along the front part 111. The rear part 112 is inserted into the insertion hole 1111 and is press-fitted with the insertion hole 1111. The sample tube 2 includes a limiting block 23, which is located inside the tube body 21 and close to the opening of the tube body 21. The limiting block 23 is connected to the tube body 21 and has a U-shaped opening 231. The width of the U-shaped opening 231 matches the size of the rear part 112 of the rod. The sampling rod 11 extends into the tube body 21, and the rear part 112 of the rod enters the U-shaped opening 231. When the front part 111 of the rod is below the limiting block 23, the rear part 112 of the rod is pulled back, and the limiting block 23 can push down the front part 111 of the rod.
[0025] The specimen sampling method of this utility model is the same as that of the prior art. The steps for leaving the sampling head 12 containing the specimen in the sampling tube 2 after sampling are as follows: A. (The rest of the text is incomplete and requires further context.) Figure 5 Insert the sampling rod 11 into the tube 21, with the rear part 112 of the rod entering the U-shaped opening 231, and the front part 111 of the rod positioned below the limiting block 23; B, as Figure 6 The rear end of the rear pull rod 112 and the rear end of the front part 111 abut against the lower surface of the limiting block 23; C, as Figure 7Then, pull the rear part 112 of the rod with force. Due to the limitation block 23 restricting the front part 111 of the rod to move backward, the rear part 112 of the rod is pulled out of the insertion hole 1111, which is equivalent to the limitation block 23 pushing down the front part 111 of the rod; the sampling head 12 falls into the preservation liquid, and the sampling is completed.
[0026] It is evident that during the removal of the rear part 112 of the sampling rod (equivalent to the breakage of an existing sampling rod), the sampling head 12 will not pop out. Furthermore, during the sampling process, when the sampling rod 11 is held and the sampling head 12 is pressed against the patient's pharyngeal wall, the sampling rod 11 is subjected to bending force, which does not cause the rear part 112 to be pulled out. Therefore, the amount of interference fit between the rear part 112 and the insertion hole 1111 can be smaller, making it easier to remove the rear part 112 with less force later.
[0027] Obviously, the front part 111 of the rod should be larger than the rear part 112 of the rod, so that the insertion hole 1111 of the rear part 112 of the rod can be set, and so that the rear part 112 of the rod can pass through the U-shaped opening 231 in the vertical direction, while the front part 111 of the rod cannot pass through the U-shaped opening 231 in the vertical direction.
[0028] To further prevent accidental pull-out of the rear part 112 of the rod while minimizing the interference fit between the rear part 112 and the insertion hole 1111, this utility model can be further improved as follows: The rear part 112 of the rod has an anti-detachment groove 1121; the sampler 1 includes an anti-detachment hook 113, which includes a hook piece 1131 and a hook head 1132. The hook piece 1131 is arranged in a front-rear direction and connected to the rear end of the front part 111 of the rod. The hook piece 1131 is elastic. The hook head 1132 is connected to the rear end of the hook piece 1131. The hook head 1132 is shaped like a right-angled triangle, with one right-angled side... The direction is front and back, with the other right-angled side of the hook head 1132 facing forward and the hypotenuse of the hook head 1132 facing backward. The tip of the hook head 1132 is embedded in the anti-detachment groove 1121. The sampling tube 2 includes a swing drive plate 24 and a top plate 25. Both the swing drive plate 24 and the top plate 25 are located below the limiting block 23 and connected to the limiting block 23. The top plate 25 presses against the hypotenuse of the hook head 1132, which can make the hook head 1132 swing outward, so that the hook head 1132 leaves the anti-detachment groove 1121. When the hook head 1132 leaves the anti-detachment groove 1121, the top plate 25 contacts the rear end of the front part 111 of the rod.
[0029] The tip of the hook head 1132 is embedded in the anti-disengagement groove 1121, which can further prevent the rear part of the rod 112 from being accidentally pulled out when the interference fit between the rear part of the rod 112 and the insertion hole 1111 is smaller. After adding the above setting, steps A and C, which leave the sampling head 12 with the specimen in the sampling tube 2 after sampling, remain unchanged. Step B is changed as follows: the lower plate 25 presses against the inclined surface of the hook head 1132, causing the hook head 1132 to swing outward, so that the hook head 1132 leaves the anti-disengagement groove 1121; when the hook head 1132 leaves the anti-disengagement groove 1121, the lower plate 25 contacts the rear end of the front part of the rod 111.
[0030] Specifically, the preferred oscillating drive piece 24 is located near the bottom end of the U-shaped opening 231; there are two top-bottom pieces 25, which are located on the left and right sides of the U-shaped opening 231 respectively.
[0031] In the operation of leaving the sampling head 12 containing the specimen in the sampling tube 2 after sampling, it is obviously necessary to ensure that the anti-detachment hook 113 is aligned with the swing drive plate 24; otherwise, the swing drive plate 24 cannot drive the anti-detachment hook 113 to swing. To facilitate the alignment of the anti-detachment hook 113 with the swing drive plate 24, it is preferable that the cross-sectional shape of the rear part 112 of the rod is square. Thus, when the rear part 112 of the rod enters the U-shaped opening 231, the orientation of the anti-detachment hook 113 is adjusted, and the U-shaped opening 231 restricts the rotation and left and right movement of the rear part 112 of the rod. Therefore, when the rear part 112 of the rod is moved to fit against the bottom of the U-shaped opening 231, the anti-detachment hook 113 and the swing drive plate 24 are naturally aligned.
[0032] To avoid air pressure affecting the insertion and removal of the rod rear 112 into the insertion hole 1111, it is preferable that the rod front 111 has an air hole 1112, which extends from the side of the rod front 111 to the bottom of the insertion hole 1111.
[0033] In order to facilitate the entry of the rear part 112 of the rod into the U-shaped opening 231, it is preferable that the end of the U-shaped opening 231 narrows to form an inlet 2311.
Claims
1. A virus sampling assembly, comprising a sampler (1) and a sampling tube (2), wherein the sampler (1) comprises a sampling rod (11) and a sampling head (12) connected to the front end of the sampling rod (11), and the sampling tube (2) comprises a tube body (21) and a tube cap (22) covering the tube body (21); characterized in that: The sampling rod (11) includes a front part (111) and a rear part (112). The rear end of the front part (111) has an insertion hole (1111) arranged axially along the front part (111). The rear part (112) is inserted into the insertion hole (1111) and is press-fitted with the insertion hole (1111). The sampling tube (2) includes a limiting block (23). The limiting block (23) is located inside the tube body (21) and close to the opening of the tube body (21). 23) Connected to the tube body (21), the limiting block (23) has a U-shaped opening (231), the width of the U-shaped opening (231) matches the size of the rear part (112) of the rod; the sampling rod (11) extends into the tube body (21), the rear part (112) of the rod enters the U-shaped opening (231), when the front part (111) of the rod is below the limiting block (23), the rear part (112) of the rod is pulled back, and the limiting block (23) can push down the front part (111) of the rod.
2. The virus sampling component according to claim 1, characterized in that: The rear part (112) of the rod has an anti-detachment groove (1121); the sampler (1) includes an anti-detachment hook (113), the anti-detachment hook (113) includes a hook piece (1131) and a hook head (1132), the hook piece (1131) is arranged in the front-back direction and connected to the rear end of the front part (111) of the rod, the hook piece (1131) is elastic, the hook head (1132) is connected to the rear end of the hook piece (1131), the shape of the hook head (1132) is a right triangle, one right-angled side of the hook head (1132) is in the front-back direction, the other right-angled side of the hook head (1132) faces forward, the hypotenuse of the hook head (1132) faces backward, and the tip of the hook head (1132) is embedded in the anti-detachment groove (1121); The sampling tube (2) includes a swing drive plate (24) and a top plate (25). Both the swing drive plate (24) and the top plate (25) are located below the limiting block (23) and connected to the limiting block (23). The top plate (25) abuts against the inclined surface of the hook head (1132), which enables the hook head (1132) to swing outward, so that the hook head (1132) leaves the anti-detachment groove (1121). When the hook head (1132) leaves the anti-detachment groove (1121), the top plate (25) contacts the rear end of the front part (111) of the rod.
3. The virus sampling component according to claim 2, characterized in that: The swing drive plate (24) is close to the bottom of the U-shaped opening (231); there are two top-bottom plates (25), which are located on the left and right sides of the U-shaped opening (231) respectively.
4. The virus sampling component according to claim 2, characterized in that: The cross-section of the rear part (112) of the rod is square.
5. The virus sampling component according to claim 2, characterized in that: The front part (111) of the rod has a gas hole (1112) that extends from the side of the front part (111) to the bottom of the insertion hole (1111).
6. The virus sampling component according to claim 2, characterized in that: The end of the U-shaped opening (231) narrows to form an inlet (2311).