Leak-proof pharmacological experiment dispensing device

Abstract

The utility model discloses a leakproof pharmacological experiment dispensing device which comprises a liquid pumping cylinder, the liquid pumping cylinder is of a hollow structure with an opening in the upper end, a movable plate is movably arranged in the liquid pumping cylinder, a movable rod is arranged on the movable plate, the end, away from the movable plate, of the movable rod is arranged above the liquid pumping cylinder, a needle head is arranged below the liquid pumping cylinder, and the needle head is connected with the movable plate. And a protection assembly is arranged on the liquid pumping cylinder. The utility model relates to the technical field of anti-leakage experiment dispensing, in particular to an anti-leakage pharmacological experiment dispensing device.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-leakage experimental medicine dispensing, in particular to an anti-leakage pharmacological experiment medicine dispensing device. Background Art

[0002] Pharmacology experiment is a compulsory course to cultivate undergraduate students' basic experimental skills and experimental design capabilities in pharmacology and drug toxicology. In pharmacology experiments, in order to ensure the safety of drug preparation, it is generally carried out in a biological safety cabinet. However, if the prepared drugs are in small doses, they are likely to cause harm to personnel.

[0003] Syringes are commonly used in the process of drug preparation. Some liquid harmful substances are often stored in sealed containers and extracted with syringes when used. However, the existing syringe structure is relatively simple. After the harmful substances are absorbed, there is residual liquid on the needle, which is easy to cause harm to the dispenser. Based on this problem, a pharmacological experiment dispenser is specially designed to prevent leakage of liquid harmful substances during the preparation process. Utility Model Content

[0004] In view of the above situation, in order to make up for the above existing defects, the utility model provides a leakage-proof pharmacological experiment dispenser.

[0005] The utility model provides the following technical scheme: the utility model proposes a leakage-proof pharmacological experiment dispensing device, comprising a liquid pumping cylinder, the liquid pumping cylinder is a hollow structure with an upper end opening, a movable plate is movably provided in the liquid pumping cylinder, a movable rod is provided on the movable plate, an end of the movable rod away from the movable plate is arranged above the liquid pumping cylinder, a needle is provided under the liquid pumping cylinder, and a protective component is provided on the liquid pumping cylinder; the protective component comprises a sleeve plate, the sleeve plate is sleeved on the liquid pumping cylinder, the lower end of the outer wall of the liquid pumping cylinder is evenly provided with slide rails, the slide rails are arranged under the sleeve plate, a protective cylinder is movably sleeved at the lower end of the liquid pumping cylinder, the inner wall of the protective cylinder is movably arranged on the slide rail, the upper end of the outer wall of the protective cylinder is evenly provided with connecting blocks, a connecting rod is provided between the connecting block and the sleeve plate, a connecting spring is sleeved on the connecting rod, a needle outlet is provided on the protective cylinder, the position of the needle outlet corresponds to the position of the needle, and a protective piece is provided under the protective cylinder.

[0006] Furthermore, the protective member includes a through slot, the lower wall of the protective tube is symmetrically provided with through slots, the through slots are arranged on both sides of the needle outlet, a blocking rod is movably provided in the through slot, one end of the blocking rod is arranged at the needle outlet and the other end passes through the through slot and is arranged on one side of the protective tube, a connecting plate is provided at the end of the blocking rod away from the needle outlet, a control spring is provided between the connecting plate and the protective tube, the control spring is sleeved on the blocking rod, a rotating rod is symmetrically provided at the lower end of the outer wall of the protective tube, a control plate is connected to the rotating rod, the control plate is arranged perpendicular to the rotating rod, the end of the control plate away from the rotating rod is arranged on the side of the connecting plate away from the control spring, when not in use, the control spring is in a compressed state, the blocking rod contacts at the needle outlet to block the needle outlet, and when the device needs to be used, the rotating rod is rotated to control The plate rotates away from one side of the connecting plate, and under the elastic force of the control spring, the connecting plate moves with the baffle rod in opposite directions to expose the needle outlet, and the protective tube is pressed against the bottle mouth where liquid needs to be extracted, and the liquid extraction tube is pressed downward. As the needle is inserted into the liquid bottle, the protective tube is pushed up along the slide rail by the top of the bottle mouth, and the connecting spring is slowly compressed. After the liquid is extracted, the needle is pulled out, and the protective tube loses the pressure of the bottle mouth. Under the action of the elastic force of the connecting spring, the protective tube moves away from the sleeve plate, and the needle is wrapped in the protective tube to prevent the liquid on the needle from causing harm to the dispensing personnel. At the same time, the connecting plates are pressed toward each other, and the connecting plates move toward each other with the baffle rod to block the needle outlet, and the rotating rod is rotated. The rotating rod brings the control plate to one side of the connecting plate to block the connecting plate, thereby sealing the needle outlet.

[0007] Wherein, a sealing ring is provided on the movable plate to ensure the sealing performance below the movable plate in the liquid extraction cylinder.

[0008] Preferably, a pressing plate is symmetrically provided on the upper end of the liquid extraction cylinder, so that when squeezing out the liquid in the liquid extraction cylinder, it is convenient for the staff to press the liquid out with one hand.

[0009] Furthermore, the connecting rod is a telescopic rod structure, which is convenient for connecting the protective tube and for adjusting the length according to needs.

[0010] The leak-proof pharmacological experiment dispenser proposed by the utility model adopting the above structure has the following beneficial effects:

[0011] 1. Through the setting of protective components, during the dispensing process, needles that have been in contact with harmful substances can be better protected to avoid harm to the dispensing personnel.

[0012] 2. The provision of the protective piece not only facilitates the entry and exit of the needle, but also further seals the protective tube, thereby further improving the sealing performance of the protective component.

[0013] 3. Due to the setting of the sealing ring, the sealing under the moving plate in the liquid extraction cylinder is guaranteed, so that the liquid can be drawn into the liquid extraction cylinder.

[0014] 4. By setting the pressing plate, when squeezing out the liquid in the liquid pumping cylinder, it is convenient for the staff to press the liquid out with one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a leak-proof pharmacological experiment dispenser proposed by the utility model;

[0017] Figure 2 Based Figure 1 Enlarged view of point A in the middle.

[0018] Among them, 1. liquid extraction cylinder, 2. moving plate, 3. moving rod, 4. needle, 5. protection component, 6. sleeve plate, 7. slide rail, 8. protection cylinder, 9. connecting block, 10. connecting rod, 11. connecting spring, 12. needle outlet, 13. protective part, 14. through groove, 15. blocking rod, 16. connecting plate, 17. control spring, 18. rotating rod, 19. control plate, 20. sealing ring, 21. pressing plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] like Figure 1 , Figure 2As shown, this embodiment provides a leak-proof pharmacological experiment dispenser, including a liquid pumping cylinder 1, the liquid pumping cylinder 1 is a hollow structure with an upper end opening, a movable plate 2 is movably arranged in the liquid pumping cylinder 1, a sealing ring 20 is arranged on the movable plate 2, a movable rod 3 is arranged on the movable plate 2, and an end of the movable rod 3 away from the movable plate 2 is arranged above the liquid pumping cylinder 1, a needle 4 is arranged under the liquid pumping cylinder 1, and a protective component 5 is arranged on the liquid pumping cylinder 1; the protective component 5 includes a sleeve plate 6, the sleeve plate 6 is sleeved on the liquid pumping cylinder 1, and a slide rail 7 is evenly arranged at the lower end of the outer wall of the liquid pumping cylinder 1 The slide rail 7 is arranged below the sleeve plate 6, and a protective cylinder 8 is movably sleeved on the lower end of the liquid extraction cylinder 1. The inner wall of the protective cylinder 8 is movably arranged on the slide rail 7, and connecting blocks 9 are evenly arranged on the upper end of the outer wall of the protective cylinder 8. A connecting rod 10 is arranged between the connecting block 9 and the sleeve plate 6, and a connecting spring 11 is sleeved on the connecting rod 10. A needle outlet 12 is arranged on the protective cylinder 8, and the position of the needle outlet 12 corresponds to the position of the needle 4. A protective member 13 is arranged under the protective cylinder 8, and a pressing plate 21 is symmetrically arranged on the upper end of the liquid extraction cylinder 1, and the connecting rod 10 is a telescopic rod structure.

[0022] like Figure 2 As shown, the protective member 13 includes a through slot 14, and the lower wall of the protective tube 8 is symmetrically provided with the through slots 14, and the through slots 14 are arranged on both sides of the needle outlet 12. A blocking rod 15 is movably provided in the through slot 14, and one end of the blocking rod 15 is arranged at the needle outlet 12 and the other end passes through the through slot 14 and is arranged on one side of the protective tube 8. A connecting plate 16 is provided at the end of the blocking rod 15 away from the needle outlet 12, and a control spring 17 is provided between the connecting plate 16 and the protective tube 8, and the control spring 17 is sleeved on the blocking rod 15. A rotating rod 18 is symmetrically provided at the lower end of the outer wall of the protective tube 8, and a control plate 19 is connected to the rotating rod 18. The control plate 19 is arranged perpendicular to the rotating rod 18, and the end of the control plate 19 away from the rotating rod 18 is arranged on the side of the connecting plate 16 away from the control spring 17.

[0023] When in use, when not in use, the control spring 17 is in a compressed state, and the blocking rod 15 contacts the needle outlet 12 to block the needle outlet 12. When the device needs to be used, the rotating rod 18 is rotated to rotate the control plate 19 away from the side of the connecting plate 16. Under the elastic force of the control spring 17, the connecting plate 16 moves with the blocking rod 15 in reverse to expose the needle outlet 12. The protective tube 8 is pressed against the bottle mouth to be extracted, and the liquid extraction cylinder 1 is pressed downward. As the needle 4 is inserted into the liquid bottle, the protective tube 8 is pushed against the bottle mouth and moves upward along the slide rail 7, and the connecting spring 11 is slowly in a compressed state. When the needle 4 contacts the liquid, it is pulled The moving rod 3 moves upward with the moving plate 2 to draw the liquid into the liquid extraction cylinder 1 below the moving plate 2. After the liquid is drawn, the needle 4 is pulled out, and the protective tube 8 loses the pressure of the bottle mouth. Under the action of the elastic force of the connecting spring 11, the protective tube 8 moves away from the sleeve plate 6, and the needle 4 is wrapped in the protective tube 8 to prevent the liquid contacting the needle 4 from causing harm to the dispensing personnel. At the same time, the connecting plates 16 are pressed toward each other, and the connecting plates 16 move toward each other with the blocking rod 15 to block the needle outlet 12. The rotating rod 18 is rotated, and the rotating rod 18 brings the control panel 19 to the side of the connecting plate 16 to block the connecting plate 16, thereby sealing the needle outlet 12.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leak-proof pharmacological experiment dispenser, characterized in that: The cam is provided with a plurality of movable plates, and a movable rod is provided on the movable plate. One end of the movable rod is arranged above the cam, and a needle is arranged under the cam. The cam is provided with a protective component. The protective component comprises a sleeve plate, which is sleeved on the cam, and a slide rail is evenly arranged on the lower end of the outer wall of the cam, and the slide rail is arranged under the sleeve plate. A protective sleeve is movably sleeved on the lower end of the cam, and the inner wall of the protective sleeve can be movably arranged on the slide rail. Connecting blocks are evenly provided on the upper end of the outer wall of the protective sleeve, and a connecting rod is provided between the connecting block and the sleeve plate. A connecting spring is sleeved on the connecting rod, and a needle outlet is provided on the protective sleeve, and the position of the needle outlet corresponds to the position of the needle, and a protective member is provided under the protective sleeve.

2. The leak-proof pharmacological experiment dispenser according to claim 1, characterized in that: The protective member includes a through slot, and the lower wall of the protective tube is symmetrically provided with through slots, and the through slots are arranged on both sides of the needle outlet. A blocking rod is movably provided in the through slot, and one end of the blocking rod is arranged at the needle outlet and the other end passes through the through slot and is arranged on one side of the protective tube. A connecting plate is provided at the end of the blocking rod away from the needle outlet, and a control spring is provided between the connecting plate and the protective tube, and the control spring is sleeved on the blocking rod. A rotating rod is symmetrically provided at the lower end of the outer wall of the protective tube, and a control plate is connected to the rotating rod, and the control plate is arranged perpendicular to the rotating rod, and the end of the control plate away from the rotating rod is arranged on a side of the connecting plate away from the control spring.

3. A leak-proof pharmacological experiment dispenser according to claim 2, characterized in that: A sealing ring is arranged on the movable plate.

4. A leak-proof pharmacological experiment dispenser according to claim 3, characterized in that: A pressing plate is symmetrically arranged on the upper end of the liquid pumping cylinder.

5. A leak-proof pharmacological experiment dispenser according to claim 4, characterized in that: The connecting rod is a telescopic rod structure.

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