A quantitative sampling and storage device for drug analysis

Abstract

The present invention discloses a drug analysis quantitative sampling and storage device, which relates to the technical field of drug sampling and storage, and comprises: a storage cylinder, a sealing piston is slidably nested inside the storage cylinder, and a movable disk is fixed on the upper side of the sealing piston; a quantitative limiting mechanism, which comprises a connecting cap, a quantitative ring, a limiting retaining ring and two inverted U-shaped rods; a pull rod, which is threadedly connected to the movable disk; a one-way drug feed component, which is threadedly mounted on the drug feed end of the storage cylinder; and a drug extraction needle component, which is threadedly mounted on the bottom end of the one-way drug feed component. The present invention can simultaneously complete quantitative sampling and store and preserve the sampled medicine. When sampling, the medicine directly enters the storage cylinder for storage and preservation, which simplifies the steps of sampling and transferring and preserving the medicine, and avoids the risk of contamination of the medicine during the transfer of the medicine.

Description

Technical Field

[0001] The invention relates to the technical field of drug sampling and preservation, and in particular to a drug analysis quantitative sampling and preservation device. Background Art

[0002] The quantitative sampling and storage device for drug analysis is specially designed for the field of drug analysis, aiming to achieve quantitative sampling and storage of drugs, ensuring the accuracy of sampling and the safety of storage. In the related art, the quantitative sampling and storage device for drug analysis usually includes a sampling tube and a storage tube, the sampling tube is used to extract drugs, and the storage tube is used to store drugs.

[0003] In actual applications, the sampling tube and the preservation tube are separately provided, and the sampling tube is in the form of a syringe. When sampling the medicine, the medicine is first extracted through the sampling tube, and then the needle of the sampling tube is inserted into the preservation tube and the medicine is injected into the preservation tube for preservation. Since the sampling tube and the preservation tube are separately provided, bacteria and other substances may enter the preservation tube along with the medicine during the process of transferring the medicine from the sampling tube to the preservation tube, thereby causing contamination of the medicine in the preservation tube. At the same time, the sampling tube is directly discarded after use, which increases the cost. Summary of the invention

[0004] The purpose of the present invention is to provide a quantitative sampling and storage device for drug analysis to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a drug analysis quantitative sampling and storage device, comprising:

[0006] A storage cylinder, wherein a sealing piston is slidably nested inside the storage cylinder, a movable disk is fixed on the upper side of the sealing piston, and a telescopic sleeve is connected between the upper side of the movable disk and the top port of the storage cylinder;

[0007] A quantitative limit mechanism, the quantitative limit mechanism comprising a connecting cap, a quantitative ring, a limit retaining ring and two inverted U-shaped rods, the connecting cap is threadedly sleeved on the top of the storage tube, the quantitative ring is slidably sleeved on the outside of the storage tube, the limit retaining ring is nested in the telescopic sleeve, and the limit retaining ring and the quantitative ring are connected by two U-shaped rods;

[0008] A pull rod, the pull rod passes through the connecting cap and is threadedly connected to the moving plate;

[0009] A one-way drug inlet assembly, wherein the one-way drug inlet assembly is threadedly mounted on the drug inlet end of the storage cylinder;

[0010] The medicine extraction needle assembly is threadedly mounted on the bottom end of the one-way medicine feeding assembly.

[0011] Preferably, the outer walls on both the front and rear sides of the storage cylinder are provided with scale lines;

[0012] A through opening is provided in the middle of the upper side of the storage tube, the lower end of the telescopic sleeve is fixedly connected to the movable disk, the upper side of the telescopic sleeve is fixedly connected to the bottom edge of the through opening, and the telescopic sleeve is made of medical silicone material to ensure the cleanliness of the inner cavity of the storage tube, thereby avoiding contamination of the medicine in the storage tube.

[0013] Preferably, convex strips are fixed on the left and right side walls of the inner cavity of the storage cylinder, and sliding grooves are provided on the left and right sides of the sealing piston and the movable disk at positions corresponding to the convex strips. The sealing piston and the movable disk are slidably connected to the convex strips through the sliding grooves, so that the sealing piston and the movable disk can move up and down stably, and at the same time, the sealing piston and the movable disk can be prevented from deflecting, thereby facilitating the connection between the movable disk and the pull rod.

[0014] Preferably, the top of the storage tube is configured as a threaded portion;

[0015] A thread groove is provided at the bottom of the connection cap, and a through hole is provided at the middle of the upper side of the connection cap, the through hole is connected with the thread groove, and the thread groove is threadedly connected with the threaded part, so that the connection between the connection cap and the storage tube is simple and reliable, and convenient for later disassembly and separation;

[0016] The outer ring diameter of the limit stop ring is smaller than the diameter of the through opening, so that the limit stop ring can pass through the through opening and be inserted into the telescopic sleeve;

[0017] Rod sleeves are fixed to the outer walls on the left and right sides of the connecting cap, and the vertical rod body connecting the U-shaped rod and the limit stop ring is nested in the telescopic sleeve, and the vertical rod body connecting the U-shaped rod and the limit stop ring passes through the connecting cap, and the vertical rod body connecting the U-shaped rod and the quantitative ring is located on the outside of the storage tube, and the vertical rod body connecting the U-shaped rod and the quantitative ring slides through the rod sleeve, and a locking knob is nested in the outer thread of the rod sleeve. Loosening the locking knob allows the U-shaped rod to move up and down, thereby facilitating the adjustment of the positions of the limit stop ring and the quantitative ring and realizing the quantitative sampling. Tightening the locking knob can fix the U-shaped rod.

[0018] Preferably, the quantitative ring is located below the limiting baffle ring, and the distance from the upper center of the quantitative ring to the lower center of the limiting baffle ring is equal to the distance from the upper center of the movable disk to the lower center of the sealing piston, thereby ensuring the accuracy of subsequent sampling and quantification.

[0019] Preferably, a threaded channel is provided in the middle of the upper side of the movable plate, the diameter of the pull-out rod is smaller than the diameter of the limit stop ring, the pull-out rod passes through the limit stop ring, a threaded column is fixed to the bottom end of the pull-out rod, the threaded column is threadedly nested in the threaded channel, and push-pull blocks are fixed to the top ends of the front and rear sides of the pull-out rod;

[0020] The connection between the pull-out rod and the movable plate is simple and convenient for disassembly and separation. The pull-out rod can be conveniently pulled or pushed by the push-pull block, thereby realizing pulling or pushing the movable plate.

[0021] Preferably, the one-way drug inlet assembly comprises a first internally threaded sleeve and an externally threaded sleeve, the externally threaded sleeve is fixed at the bottom of the first internally threaded sleeve, the first internally threaded sleeve is connected to the inner cavity of the externally threaded sleeve, the bottom of the externally threaded sleeve is provided with a drug inlet connected to the inner cavity thereof, a baffle is fixed to the upper end of the inner cavity of the externally threaded sleeve, a plurality of drug inlet notches are provided on the edge of the baffle, a spring is connected to the middle part of the lower side of the baffle, a sealing gasket is fixed to the bottom end of the spring, the diameter of the sealing gasket is smaller than the inner cavity diameter of the externally threaded sleeve, and the diameter of the sealing gasket is larger than the diameter of the drug inlet;

[0022] After installing the medicine extraction needle assembly on the one-way medicine feed assembly, lift the sealing gasket disk away from the medicine inlet, so that the medicine can enter the external threaded sleeve of the one-way medicine feed assembly through the medicine extraction needle assembly, then enter the first internal threaded sleeve through the medicine feed notch, and finally enter the storage tube. After the medicine extraction needle assembly is removed from the one-way medicine feed assembly, the sealing gasket disk tightly covers the medicine inlet under the elastic force of the spring to achieve sealing.

[0023] Preferably, an externally threaded drug feed tube head is fixed to the middle part of the lower side of the storage tube, the inner cavity of the externally threaded drug feed tube head is connected with the inner cavity of the storage tube, and the externally threaded drug feed tube head is threadedly connected to the first internally threaded sleeve, so that the connection between the one-way drug feed assembly and the storage tube is simple and reliable, and it is also convenient for later disassembly and separation.

[0024] Preferably, the drug extraction needle assembly comprises a second internally threaded sleeve and a needle tube, a hollow top column is fixed in the middle of the bottom wall of the inner cavity of the second internally threaded sleeve, a drug discharge port is opened at the top of both the front and rear sides of the hollow top column, the drug discharge port is connected with the inner cavity of the hollow top column, the needle tube is fixed at the bottom of the second internally threaded sleeve, and the inner cavity of the needle tube is connected with the inner cavity of the hollow top column;

[0025] The diameter of the hollow top column is smaller than the diameter of the drug inlet, so that the hollow top column can pass through the drug inlet, thereby lifting the sealing gasket disc;

[0026] The second internal thread sleeve is threadably sleeved on the external thread sleeve, so that the connection between the medicine extraction needle assembly and the one-way medicine feeding assembly is simple and reliable, and is also convenient for later disassembly and separation.

[0027] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0028] 1. The quantitative sampling and storage device for drug analysis provided by the present invention is composed of a storage cylinder, a quantitative limit mechanism, a pull rod, a one-way drug feeding assembly and a drug extraction needle assembly, and can simultaneously complete quantitative sampling and store and preserve the sampled medicines. When sampling, the medicines directly enter the storage cylinder for storage and preservation, which simplifies the steps of sampling and transferring and preserving the medicines, and avoids the risk of medicines being contaminated during the transfer process;

[0029] 2. The one-way medicine inlet assembly is threadedly connected to the external thread medicine inlet pipe head of the storage tube, and a telescopic sleeve is connected between the moving disk in the storage tube and the top port of the storage tube, which ensures the sealing and cleanliness of the storage space inside the storage tube, improves the medicine storage effect, and reduces the risk of medicine contamination;

[0030] 3. The pull-out rod is threadedly connected to the movable disk in the storage tube. The pull-out rod and the movable disk are easy to install and disassemble. The quantitative limit mechanism and the storage tube are easy to install and disassemble. The pull-out rod and the quantitative limit mechanism will not come into contact with the medicine during the sampling and storage process of the medicine, so that the quantitative limit mechanism can be disassembled, cleaned and disinfected and reused, which reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is another angle schematic diagram of the present invention;

[0034] Figure 3 is a three-dimensional cross-sectional view of the present invention;

[0035] Figure 4 It is a schematic diagram of the storage cylinder structure of the present invention;

[0036] Figure 5 For the present invention Figure 4 A three-dimensional cross-sectional view of

[0037] Figure 6 It is a schematic diagram of the connection between the movable plate and the telescopic sleeve of the present invention;

[0038] Figure 7 It is a schematic diagram of the structure of the quantitative limiting mechanism of the present invention;

[0039] Figure 8 It is a schematic diagram of the pull-out rod structure of the present invention;

[0040] Fig. 9 This is a schematic diagram of the structure of the one-way drug feeding component of the present invention;

[0041] Fig.10 For the present invention Fig. 9 A three-dimensional cross-sectional view of

[0042] Fig.11 This is a schematic diagram of the structure of the medicine extraction needle assembly of the present invention;

[0043] Fig.12 For the present invention Fig.11 A three-dimensional cross-sectional view of .

[0044] Description of reference numerals:

[0045] 10. Storage cylinder; 11. Sealing piston; 12. Moving plate; 121. Threaded channel; 13. Telescopic sleeve; 14. Scale line; 15. Through port; 16. Threaded portion; 17. Raised strip; 18. Slide groove; 19. Externally threaded medicine inlet pipe head;

[0046] 20. quantitative limit mechanism; 21. connecting cap; 211. threaded groove; 212. through-hole; 211. threaded groove; 22. quantitative ring; 23. limit stop ring; 24. U-shaped rod; 25. rod sleeve; 26. locking knob;

[0047] 30. Pull-out rod; 31. Threaded column; 32. Push-pull block;

[0048] 40. One-way drug inlet assembly; 42. Externally threaded sleeve; 41. First internally threaded sleeve; 43. Drug inlet; 44. Stop plate; 45. Drug inlet notch; 46. Spring; 47. Sealing pad;

[0049] 50. Medicine extraction needle assembly; 51. Second internal threaded sleeve; 52. Needle tube; 53. Hollow top column; 54. Medicine discharge port. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] The present invention provides Figures 1 to 12 A drug analysis quantitative sampling and storage device is shown, comprising:

[0052] A storage cylinder 10, wherein a sealing piston 11 is slidably nested inside the storage cylinder 10, a movable disk 12 is fixed on the upper side of the sealing piston 11, and a telescopic sleeve 13 is connected between the upper side of the movable disk 12 and the top port of the storage cylinder 10;

[0053] The quantitative limit mechanism 20 includes a connecting cap 21, a quantitative ring 22, a limit retaining ring 23 and two inverted U-shaped rods 24. The connecting cap 21 is threadedly sleeved on the top of the storage tube 10, the quantitative ring 22 is slidably sleeved on the outside of the storage tube 10, the limit retaining ring 23 is nested in the telescopic sleeve 13, and the limit retaining ring 23 and the quantitative ring 22 are connected by two U-shaped rods 24.

[0054] A pull rod 30, the pull rod 30 passes through the connection cap 21, and the pull rod 30 is threadedly connected to the movable plate 12;

[0055] A one-way drug inlet assembly 40, which is threadedly mounted on the drug inlet end of the storage tube 10;

[0056] The medicine extraction needle assembly 50 is threadedly mounted on the bottom end of the one-way medicine feeding assembly 40 .

[0057] The outer walls of the storage tube 10 on both the front and rear sides are provided with scale marks 14;

[0058] A through opening 15 is provided in the middle of the upper side of the storage tube 10, the lower end of the telescopic sleeve 13 is fixedly connected to the movable disk 12, and the upper side of the telescopic sleeve 13 is fixedly connected to the bottom edge of the through opening 15. The telescopic sleeve 13 is made of medical silicone material to ensure the cleanliness of the inner cavity of the storage tube 10, thereby avoiding contamination of the medicine in the storage tube 10.

[0059] The left and right side walls of the inner cavity of the storage cylinder 10 are fixed with ridges 17, and the left and right sides of the sealing piston 11 and the movable plate 12 are provided with sliding grooves 18 corresponding to the positions of the ridges 17. The sealing piston 11 and the movable plate 12 are slidably connected to the ridges 17 through the sliding grooves 18, so that the sealing piston 11 and the movable plate 12 can move up and down stably, and at the same time, the sealing piston 11 and the movable plate 12 can be prevented from deflecting, thereby facilitating the connection between the movable plate 12 and the pull rod 30.

[0060] The top of the storage cartridge 10 is provided with a threaded portion 16;

[0061] A thread groove 211 is formed at the bottom of the connection cap 21, and a through hole 212 is formed at the middle of the upper side of the connection cap 21. The through hole 212 is connected to the thread groove 211, and the thread groove 211 is threadedly connected to the threaded portion 16, so that the connection between the connection cap 21 and the storage cartridge 10 is simple and reliable, and convenient for later disassembly and separation.

[0062] The outer ring diameter of the limiting retaining ring 23 is smaller than the diameter of the through opening 15, so that the limiting retaining ring 23 can pass through the through opening 15 and be inserted into the telescopic sleeve 13;

[0063] Rod sleeves 25 are fixed to the outer walls on both sides of the connecting cap 21, and the vertical rod body connecting the U-shaped rod 24 and the limit ring 23 is nested in the telescopic sleeve 13, and the vertical rod body connecting the U-shaped rod 24 and the limit ring 23 passes through the connecting cap 21, and the vertical rod body connecting the U-shaped rod 24 and the quantitative ring 22 is located on the outside of the storage tube 10, and the vertical rod body connecting the U-shaped rod 24 and the quantitative ring 22 slides through the rod sleeve 25, and a locking knob 26 is nested in the outer thread of the rod sleeve 25. Loosening the locking knob 26 allows the U-shaped rod 24 to move up and down, thereby facilitating the adjustment of the positions of the limit ring 23 and the quantitative ring 22 to achieve quantitative sampling, and tightening the locking knob 26 can fix the U-shaped rod 24.

[0064] The quantitative ring 22 is located below the limiting retaining ring 23. The distance from the upper center of the quantitative ring 22 to the lower center of the limiting retaining ring 23 is equal to the distance from the upper center of the movable disk 12 to the lower center of the sealing piston 11, thereby ensuring the accuracy of subsequent sampling and quantitative determination.

[0065] A threaded channel 121 is provided in the middle of the upper side of the movable plate 12. The diameter of the pull rod 30 is smaller than the diameter of the limit stop ring 23. The pull rod 30 passes through the limit stop ring 23. A threaded column 31 is fixed to the bottom end of the pull rod 30. The threaded column 31 is threadedly embedded in the threaded channel 121. Push-pull blocks 32 are fixed to the top ends of the front and rear sides of the pull rod 30.

[0066] The connection between the pull rod 30 and the movable plate 12 is simple and convenient for disassembly and separation. The pull rod 30 can be easily pulled or pushed by the push-pull block 32 , thereby achieving pulling or pushing of the movable plate 12 .

[0067] The one-way drug inlet assembly 40 includes a first internally threaded sleeve 41 and an externally threaded sleeve 42, the externally threaded sleeve 42 is fixed to the bottom of the first internally threaded sleeve 41, the first internally threaded sleeve 41 is connected to the inner cavity of the externally threaded sleeve 42, the bottom of the externally threaded sleeve 42 is provided with a drug inlet 43 connected to the inner cavity thereof, a baffle 44 is fixed to the upper end of the inner cavity of the externally threaded sleeve 42, a plurality of drug inlet notches 45 are provided on the edge of the baffle 44, a spring 46 is connected to the middle part of the lower side of the baffle 44, a sealing gasket 47 is fixed to the bottom end of the spring 46, the diameter of the sealing gasket 47 is smaller than the inner cavity diameter of the externally threaded sleeve 42, and the diameter of the sealing gasket 47 is larger than the diameter of the drug inlet 43;

[0068] After the drug extraction needle assembly 50 is installed on the one-way drug feed assembly 40, the sealing gasket 47 is lifted up to move it away from the drug feed port 43, so that the medicine can enter the external threaded sleeve 42 of the one-way drug feed assembly 40 through the drug extraction needle assembly 50, then enter the first internal threaded sleeve 41 through the drug feed notch 45, and finally enter the storage tube 10. After the drug extraction needle assembly 50 is removed from the one-way drug feed assembly 40, the sealing gasket 47 tightly covers the drug feed port 43 under the elastic force of the spring 46 to achieve sealing.

[0069] An externally threaded drug feed pipe head 19 is fixed to the middle part of the lower side of the storage barrel 10. The inner cavity of the externally threaded drug feed pipe head 19 is connected to the inner cavity of the storage barrel 10. The externally threaded drug feed pipe head 19 is threadedly connected to the first internally threaded sleeve 41, so that the connection between the one-way drug feed component 40 and the storage barrel 10 is simple and reliable, and it is also convenient for later disassembly and separation.

[0070] The drug extraction needle assembly 50 includes a second internally threaded sleeve 51 and a needle tube 52. A hollow top column 53 is fixed in the middle of the bottom wall of the inner cavity of the second internally threaded sleeve 51. The tops of the front and rear sides of the hollow top column 53 are provided with drug discharge ports 54. The drug discharge ports 54 are connected to the inner cavity of the hollow top column 53. The needle tube 52 is fixed to the bottom of the second internally threaded sleeve 51. The inner cavity of the needle tube 52 is connected to the inner cavity of the hollow top column 53.

[0071] The diameter of the hollow top column 53 is smaller than the diameter of the drug inlet 43, so that the hollow top column 53 can pass through the drug inlet 43, thereby lifting the sealing pad 47;

[0072] The second internal threaded sleeve 51 is threadedly sleeved on the external threaded sleeve 42, so that the connection between the medicine extraction needle assembly 50 and the one-way medicine feeding assembly 40 is simple and reliable, and is also convenient for later disassembly and separation.

[0073] In the present invention, first, when the quantitative limiting mechanism 20 is connected to the storage tube 10, the quantitative ring 22 on the quantitative limiting mechanism 20 is sleeved on the outside of the storage tube 10, and the limiting retaining ring 23 passes through the through opening 15 at the top of the storage tube 10 and is inserted into the telescopic sleeve 13, and then the connecting cap 21 on the quantitative limiting mechanism 20 is threadedly connected with the threaded portion 16 at the top of the storage tube 10. At this time, the quantitative ring 22 is located at the bottom end of the scale line 14 outside the storage tube 10, and the bottom of the limiting retaining ring 23 conflicts with the upper side of the movable disk 12 in the storage tube 10;

[0074] Then, the pull rod 30 is connected to the mobile disk 12 in the storage cartridge 10, and one end of the pull rod 30 with the threaded column 31 is inserted into the telescopic sleeve 13 through the connecting cap 21, and the pull rod 30 on the pull rod 30 is threadedly nested in the threaded channel 121 on the mobile disk 12, so as to realize the connection between the pull rod 30 and the mobile disk 12;

[0075] Then, the one-way drug inlet assembly 40 is connected to the externally threaded drug inlet pipe head 19 at the bottom of the storage tube 10, and the first internally threaded sleeve 41 on the one-way drug inlet assembly 40 is threadedly sleeved on the externally threaded drug inlet pipe head 19, so as to realize the connection between the one-way drug inlet assembly 40 and the storage tube 10;

[0076] Finally, the drug extraction needle assembly 50 is connected to the one-way drug inlet assembly 40, and the second internally threaded sleeve 51 on the drug extraction needle assembly 50 is threadedly sleeved on the externally threaded sleeve 42 on the one-way drug inlet assembly 40, and at the same time, the hollow top column 53 in the second internally threaded sleeve 51 can pass through the drug inlet port 43 at the bottom of the externally threaded sleeve 42, thereby lifting the sealing pad 47 in the externally threaded sleeve 42;

[0077] When sampling, loosen the locking knob 26 on the quantitative limit mechanism 20 to release the lock on the U-shaped rod 24, so that the U-shaped rod 24 can move up and down, move the U-shaped rod 24, drive the quantitative ring 22 and the limit stop ring 23 to move, and move the quantitative ring 22 to the corresponding position on the scale line 14 according to the amount of medicine to be extracted, and then tighten the locking knob 26 to fix the U-shaped rod 24, thereby fixing the position of the quantitative ring 22 and the limit stop ring 23, insert the needle tube 52 of the medicine extraction needle assembly 50 into the medicine to be extracted, pull the extraction rod 30, the extraction rod 30 drives the movable disk 12 to move, and the movement of the movable disk 12 drives the sealing piston 11 to move, so that negative pressure is generated in the storage cylinder 10, thereby The medicine is sucked, and the medicine enters the storage tube 10 for storage through the medicine extraction needle assembly 50 and the one-way medicine feeding assembly 40. The pulling rod 30 is continuously pulled until the movable disk 12 conflicts with the bottom of the limiting baffle ring 23 and the pulling rod 30 cannot be pulled. Then the quantitative sampling of the medicine is completed. Then, the one-way medicine feeding assembly 40 is held with one hand, and the medicine extraction needle assembly 50 is rotated with the other hand to remove the medicine extraction needle assembly 50 from the one-way medicine feeding assembly 40. Under the elastic force of the spring 46, the sealing pad 47 in the one-way medicine feeding assembly 40 tightly covers the medicine feeding port 43 to achieve sealing. At the same time, the pulling rod 30 is rotated to disassemble and remove the pulling rod 30, and then the connecting cap 21 is rotated to disassemble and remove the quantitative limit mechanism 20.

[0078] The quantitative sampling and storage device for drug analysis provided by the present invention is composed of a storage tube 10, a quantitative limit mechanism 20, a pull rod 30, a one-way drug feed assembly 40 and a drug extraction needle assembly 50, which can simultaneously complete quantitative sampling and store and preserve the sampled medicines. When sampling, the medicines directly enter the storage tube 10 for storage and preservation, which simplifies the sampling and transfer and preservation steps of the medicines, and avoids the risk of contamination of the medicines during the transfer process; at the same time, the one-way drug feed assembly 40 is threadedly connected to the external threaded drug feed pipe head 19 of the storage tube 10, and the movable disk 12 in the storage tube 10 is connected to the storage tube 10. A telescopic sleeve 13 is connected between the top ports to ensure the sealing and cleanliness of the internal storage space of the storage tube 10, improve the storage effect of the medicine, and reduce the risk of the medicine being contaminated; the pull-out rod 30 is threadedly connected to the movable disk 12 in the storage tube 10, the pull-out rod 30 and the movable disk 12 are easy to install and disassemble, the quantitative limit mechanism 20 and the storage tube 10 are easy to install and disassemble, and the pull-out rod 30 and the quantitative limit mechanism 20 will not come into contact with the medicine during the sampling and storage process of the medicine, so that the quantitative limit mechanism 20 can be disassembled, cleaned and disinfected and reused, thereby reducing the cost.

[0079] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A quantitative sampling and storage device for drug analysis, characterized in that: include: A storage cylinder (10), wherein a sealing piston (11) is slidably nested inside the storage cylinder (10), a movable disk (12) is fixed on the upper side of the sealing piston (11), and a telescopic sleeve (13) is connected between the upper side of the movable disk (12) and the top port of the storage cylinder (10); A quantitative limiting mechanism (20), the quantitative limiting mechanism (20) comprising a connecting cap (21), a quantitative ring (22), a limiting retaining ring (23) and two inverted U-shaped rods (24), the connecting cap (21) being threadedly sleeved on the top of the storage tube (10), the quantitative ring (22) being slidably sleeved on the outside of the storage tube (10), the limiting retaining ring (23) being nested in the telescopic sleeve (13), and the limiting retaining ring (23) and the quantitative ring (22) being connected via the two U-shaped rods (24); A pull rod (30), the pull rod (30) passes through the connection cap (21), and the pull rod (30) is threadedly connected to the movable plate (12); A one-way drug inlet assembly (40), wherein the one-way drug inlet assembly (40) is threadedly mounted on the drug inlet end of the storage tube (10); A medicine extraction needle assembly (50) is threadedly mounted on the bottom end of the one-way medicine feeding assembly (40).

2. A drug analysis quantitative sampling and storage device according to claim 1, characterized in that: The outer walls of the storage cylinder (10) on both the front and rear sides are provided with scale marks (14); A through opening (15) is provided in the middle of the upper side of the storage tube (10); the lower end of the telescopic sleeve (13) is fixedly connected to the movable plate (12); the upper side of the telescopic sleeve (13) is fixedly connected to the bottom edge of the through opening (15); and the telescopic sleeve (13) is made of medical silicone material.

3. A drug analysis quantitative sampling and storage device according to claim 1, characterized in that: The left and right side walls of the inner cavity of the storage cylinder (10) are both fixed with convex strips (17), and the left and right sides of the sealing piston (11) and the movable plate (12) are provided with sliding grooves (18) at positions corresponding to the convex strips (17), and the sealing piston (11) and the movable plate (12) are slidably sleeved on the convex strips (17) through the sliding grooves (18).

4. A drug analysis quantitative sampling and storage device according to claim 2, characterized in that: The top of the storage cylinder (10) is provided as a threaded portion (16); The bottom of the connecting cap (21) is provided with a thread groove (211), the middle part of the upper side of the connecting cap (21) is provided with a through hole (212), the through hole (212) is connected with the thread groove (211), and the thread groove (211) is threadedly connected with the threaded portion (16); The outer ring diameter of the limiting retaining ring (23) is smaller than the diameter of the through opening (15); Rod sleeves (25) are fixed to the outer walls on both sides of the connecting cap (21); a vertical rod connecting the U-shaped rod (24) and the limiting retaining ring (23) is nested in the telescopic sleeve (13); the vertical rod connecting the U-shaped rod (24) and the limiting retaining ring (23) passes through the connecting cap (21); the vertical rod connecting the U-shaped rod (24) and the quantitative ring (22) is located outside the storage cylinder (10); the vertical rod connecting the U-shaped rod (24) and the quantitative ring (22) slides through the rod sleeve (25); and a locking knob (26) is threadedly nested on the outer side of the rod sleeve (25).

5. A drug analysis quantitative sampling and storage device according to claim 1, characterized in that: The quantitative ring (22) is located below the limiting stop ring (23), and the distance from the upper end center of the quantitative ring (22) to the lower end center of the limiting stop ring (23) is equal to the distance from the upper end center of the moving disk (12) to the lower end center of the sealing piston (11).

6. A drug analysis quantitative sampling and storage device according to claim 1, characterized in that: A threaded channel (121) is provided in the middle of the upper side of the movable disk (12); the diameter of the pull-out rod (30) is smaller than the diameter of the limit stop ring (23); the pull-out rod (30) passes through the limit stop ring (23); a threaded column (31) is fixed to the bottom end of the pull-out rod (30); the threaded column (31) is threadedly embedded in the threaded channel (121); push-pull blocks (32) are fixed to the top ends of the front and rear sides of the pull-out rod (30).

7. A drug analysis quantitative sampling and storage device according to claim 1, characterized in that: The one-way drug inlet assembly (40) comprises a first internally threaded sleeve (41) and an externally threaded sleeve (42), wherein the externally threaded sleeve (42) is fixed at the bottom of the first internally threaded sleeve (41), the first internally threaded sleeve (41) is in communication with the inner cavity of the externally threaded sleeve (42), the bottom of the externally threaded sleeve (42) is provided with a drug inlet (43) in communication with the inner cavity thereof, a baffle (44) is fixed at the upper end of the inner cavity of the externally threaded sleeve (42), a plurality of drug inlet notches (45) are provided at the edge of the baffle (44), a spring (46) is connected to the middle portion of the lower side of the baffle (44), a sealing gasket (47) is fixed at the bottom end of the spring (46), the diameter of the sealing gasket (47) is smaller than the inner cavity diameter of the externally threaded sleeve (42), and the diameter of the sealing gasket (47) is larger than the diameter of the drug inlet (43).

8. A drug analysis quantitative sampling and storage device according to claim 7, characterized in that: An externally threaded medicine feed pipe head (19) is fixed to the middle portion of the lower side of the storage tube (10); the inner cavity of the externally threaded medicine feed pipe head (19) is connected to the inner cavity of the storage tube (10); and the externally threaded medicine feed pipe head (19) is threadedly connected to the first internally threaded sleeve (41).

9. A drug analysis quantitative sampling and storage device according to claim 7, characterized in that: The medicine extraction needle assembly (50) comprises a second internally threaded sleeve (51) and a needle tube (52); a hollow top column (53) is fixed in the middle of the bottom wall of the inner cavity of the second internally threaded sleeve (51); medicine discharge ports (54) are provided at the tops of both the front and rear sides of the hollow top column (53); the medicine discharge ports (54) are connected to the inner cavity of the hollow top column (53); the needle tube (52) is fixed to the bottom of the second internally threaded sleeve (51); the inner cavity of the needle tube (52) is connected to the inner cavity of the hollow top column (53); The diameter of the hollow top column (53) is smaller than the diameter of the drug inlet (43); The second internally threaded sleeve (51) is threadably sleeved on the externally threaded sleeve (42).

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