Clinical pharmaceutical experiment sampling device

Abstract

The utility model provides a clinical pharmacy experiment sampling device which comprises a needle tube used for extracting clinical pharmacy experiment liquid medicine, one end of the needle tube is fixedly connected with a first limiting plate, one end of the needle tube penetrates through the first limiting plate, and an extraction mechanism is arranged on the side, away from the needle tube, of the first limiting plate. The needle tube is sleeved with a fixing mechanism used for fixing the extraction mechanism. The extraction mechanism comprises a piston, a threaded rod and a second limiting plate, when liquid medicine is extracted, a needle head at the front end of a needle tube extends into the liquid medicine, then the threaded rod is rotated through a transmission ball, and the threaded rod and a threaded groove are matched with each other to drive the piston to move horizontally to extract the liquid medicine. The amount of the extracted liquid medicine can be more conveniently and accurately controlled, the consequence that the accuracy of an experiment result is not ideal due to the fact that the amount of the extracted liquid medicine is not accurate due to uneven force in the push-pull process of a traditional medical injector is avoided, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices for clinical pharmacy experiments, in particular to a sampling device for clinical pharmacy experiments. Background Art

[0002] Clinical pharmacy refers to the scientific branch separated from hospital pharmacy. It is a comprehensive applied technical discipline that takes patients as the object, aims to improve the quality of clinical drug use, takes the interaction between drugs and the body as the core, and studies and practices the rational application methods of drugs in clinical practice. In clinical pharmacy experiments, it is necessary to sample and detect the drugs in the experiments. At present, most clinical pharmacy experiments use medical syringes for sampling. When in use, the needle at the front end of the syringe is inserted into the liquid medicine, and the push-pull plate is pulled to drive the transmission rod and the piston to move to extract the liquid medicine sample for sampling. However, during the process of pulling the push-pull plate, the liquid medicine to be extracted is relatively fine, and medical staff cannot accurately control the force used in the push-pull process manually, which easily leads to inaccurate volume of the liquid medicine extracted by the syringe, thus affecting the experimental results.

[0003] Therefore, it is necessary to provide a new sampling device for clinical pharmacy experiments to solve the above technical problems. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a sampling device for clinical pharmacy experiments.

[0005] The sampling device for clinical pharmacy experiments provided by the utility model includes a syringe barrel for extracting the liquid medicine in clinical pharmacy experiments. One end of the syringe barrel is fixedly connected with a first limiting plate. One end of the syringe barrel penetrates through the first limiting plate. A sampling mechanism is arranged on the side of the first limiting plate away from the syringe barrel. A fixing mechanism for fixing the sampling mechanism is sleeved outside the syringe barrel.

[0006] The sampling mechanism includes a piston, a threaded rod and a second limiting plate. The piston is slidably arranged inside the syringe barrel. One side of the piston is rotatably connected with a threaded rod through a first bearing. One side of the first limiting plate is fixedly connected with a second limiting plate through two connecting columns. A through threaded groove is opened at the center of the second limiting plate. The threaded groove is threadedly connected with the threaded rod. One end of the threaded rod away from the piston is fixedly connected with a transmission ball. Anti-slip lines are arranged on the surface of the transmission ball.

[0007] Preferably, the outer wall of the piston is closely attached to the inner wall of the syringe barrel. The total length dimensions of the syringe barrel, the first limiting plate, the connecting columns and the second limiting plate are smaller than the length dimension of the threaded rod.

[0008] Preferably, the diameter of the transmission ball is larger than the diameter of the threaded rod.

[0009] Preferably, the fixing mechanism includes a transmission plate, transmission rods and a fixing sleeve. A second bearing is fixedly sleeved on the outer wall of the end of the threaded rod close to the transmission ball, and a transmission plate is fixedly sleeved on the outer wall of the second bearing. Two transmission rods are fixedly connected to the side of the transmission plate away from the transmission ball, and a fixing sleeve is fixedly connected between the two transmission rods. The fixing sleeve is slidably sleeved on the outer wall of the syringe, and two connecting blocks are fixedly connected to one side of the opening of the fixing sleeve. A fixing bolt is threadedly connected inside the two connecting blocks.

[0010] Preferably, two limiting holes are opened at the corresponding parts of the first limiting plate and the second limiting plate, and the two transmission rods sequentially pass through the plurality of limiting holes. A transparent observation window is arranged on the surface of the fixing sleeve.

[0011] Preferably, a needle head is clamped at the liquid inlet at the front end of the syringe.

[0012] Compared with the related art, the clinical pharmacy experiment sampling device provided by the present utility model has the following

[0013] beneficial effects:

[0014] The present utility model provides a clinical pharmacy experiment sampling device, and in specific implementation:

[0015] 1. When extracting the liquid medicine, insert the needle head at the front end of the syringe into the liquid medicine, and then rotate the threaded rod through the transmission ball. The threaded rod and the threaded groove cooperate with each other to drive the piston to move horizontally to extract the liquid medicine. This device drives the piston to move horizontally by rotating, which is more convenient and accurate to control the amount of extracted liquid medicine, avoiding the inaccurate amount of extracted liquid medicine caused by uneven force during the push-pull process of the traditional medical syringe, resulting in an unsatisfactory accuracy of the experimental results, and is more convenient to use;

[0016] 2. During the process of extracting the liquid medicine by this device, the threaded rod will drive the transmission plate to move horizontally. The transmission plate drives the fixing sleeve to slide horizontally on the surface of the syringe through the transmission rods. When the extraction of the liquid medicine is completed, tighten the fixing bolt. The fixing bolt drives the connecting blocks to squeeze relatively, and the connecting blocks drive the fixing sleeve to fit more tightly on the surface of the syringe, thereby fixing the threaded rod through the transmission rods and the transmission plate, avoiding the situation that the threaded rod retracts due to vibration when moving the device, resulting in the spillage of the liquid medicine, and ensuring the experimental accuracy to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric view of the clinical pharmacy experiment sampling device provided by the present utility model;

[0018] Figure 2 is an exploded axonometric view of the clinical pharmacy experiment sampling device provided by the present utility model;

[0019] Figure 3Schematic diagram of the fixing structure of the sampling device for clinical pharmacy experiments provided by the present utility model.

[0020] Reference numerals in the figure: 1, syringe; 2, piston; 3, first bearing; 4, threaded rod; 5, transmission ball; 6, anti-slip pattern; 7, first limiting plate; 8, connecting column; 9, second limiting plate; 10, threaded groove; 11, transmission plate; 12, second bearing; 13, transmission rod; 14, fixing sleeve; 15, connecting block; 16, limiting hole; 17, fixing bolt; 18, observation window; 19, needle tip. Detailed implementation manner

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and implementation manners.

[0022] Please refer to Figure 1 - Figure 3 , where Figure 1 is the axonometric view of the sampling device for clinical pharmacy experiments provided by the present utility model; Figure 2 is the exploded axonometric view of the sampling device for clinical pharmacy experiments provided by the present utility model; Figure 3 is the schematic diagram of the fixing structure of the sampling device for clinical pharmacy experiments provided by the present utility model.

[0023] In the specific implementation process, such as Figure 1 - Figure 3As shown in the figure, a clinical pharmacy experiment sampling device includes a syringe 1 for extracting the liquid medicine for clinical pharmacy experiments. One end of the syringe 1 is fixedly connected to a first limiting plate 7. One end of the syringe 1 penetrates through the first limiting plate 7. A sampling mechanism is arranged on the side of the first limiting plate 7 away from the syringe 1. A fixing mechanism for fixing the sampling mechanism is sleeved outside the syringe 1. The sampling mechanism includes a piston 2, a threaded rod 4, and a second limiting plate 9. The piston 2 is slidably arranged inside the syringe 1. One side of the piston 2 is rotatably connected to the threaded rod 4 through a first bearing 3. One side of the first limiting plate 7 is fixedly connected to a second limiting plate 9 through two connecting columns 8. A through threaded groove 10 is opened at the center of the second limiting plate 9. The threaded rod 4 is threadedly connected to the threaded groove 10. One end of the threaded rod 4 away from the piston 2 is fixedly connected to a transmission ball 5. Anti-slip lines 6 are arranged on the surface of the transmission ball 5. The outer wall of the piston 2 is closely attached to the inner wall of the syringe 1. The sum of the length dimensions of the syringe 1, the first limiting plate 7, the connecting columns 8, and the second limiting plate 9 is less than the length dimension of the threaded rod 4. The diameter of the transmission ball 5 is greater than the diameter of the threaded rod 4. The fixing mechanism includes a transmission plate 11, a transmission rod 13, and a fixing sleeve 14. A second bearing 12 is fixedly sleeved on the outer wall of the threaded rod 4 near the transmission ball 5. The transmission plate 11 is fixedly sleeved on the outer wall of the second bearing 12. Two transmission rods 13 are fixedly connected to the side of the transmission plate 11 away from the transmission ball 5. A fixing sleeve 14 is fixedly connected between the two transmission rods 13. The fixing sleeve 14 is slidably sleeved on the outer wall of the syringe 1. One side of the opening of the fixing sleeve 14 is fixedly connected to two connecting blocks 15. Two fixing bolts 17 are threadedly connected inside the two connecting blocks 15. Two limiting holes 16 are opened at the corresponding parts of the first limiting plate 7 and the second limiting plate 9. The two transmission rods 13 sequentially pass through the plurality of limiting holes 16. A transparent observation window 18 is arranged on the surface of the fixing sleeve 14. A needle head 19 is clamped at the liquid inlet at the front end of the syringe 1.

[0024] The working principle provided by the present utility model is as follows: When extracting the liquid medicine, the needle head at the front end of the syringe 1 is inserted into the liquid medicine. Subsequently, the threaded rod 4 is rotated through the transmission ball 5. The threaded rod 4 and the threaded groove 10 cooperate with each other to drive the piston 2 to move horizontally to extract the liquid medicine. The device drives the piston 2 to move horizontally in a rotating manner for liquid medicine sampling, which is more convenient and precise to control the amount of extracted liquid medicine, avoiding the consequence that the accuracy of the experimental results is not ideal due to inaccurate extraction of the liquid medicine caused by uneven force during the pushing and pulling process of the traditional medical syringe. During the process of extracting the liquid medicine, the threaded rod 4 will drive the transmission plate 11 to move horizontally. The transmission plate 11 drives the fixing sleeve 14 to slide horizontally on the surface of the syringe 1 through the transmission rod 13. When the extraction of the liquid medicine is completed, the fixing bolt 17 is tightened. The fixing bolt 17 drives the connecting blocks 15 to relatively squeeze. The connecting blocks 15 drive the fixing sleeve 14 to fit more closely on the surface of the syringe 1, thereby fixing the threaded rod 4 through the transmission rod 13 and the transmission plate 11, avoiding the situation that the liquid medicine spills out due to the retraction of the threaded rod 4 caused by vibration when moving the device.

[0025] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated herein. The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall equally be included within the patent protection scope of the present utility model.

Claims

1. Clinical pharmacy experiment sampling device, characterized in that, It includes a syringe (1) for extracting clinical pharmacy experiment liquid medicine. One end of the syringe (1) is fixedly connected with a first limiting plate (7). One end of the syringe (1) penetrates through the first limiting plate (7). An extraction mechanism is arranged on the side of the first limiting plate (7) away from the syringe (1). A fixing mechanism for fixing the extraction mechanism is sleeved outside the syringe (1). The extraction mechanism includes a piston (2), a threaded rod (4) and a second limiting plate (9). The piston (2) is slidably arranged inside the syringe (1). One side of the piston (2) is rotatably connected with the threaded rod (4) through a first bearing (3). One side of the first limiting plate (7) is fixedly connected with a second limiting plate (9) through two connecting columns (8). A through threaded groove (10) is opened at the center of the second limiting plate (9). The threaded groove (10) is threadedly connected with the threaded rod (4). One end of the threaded rod (4) away from the piston (2) is fixedly connected with a transmission ball (5). Anti-slip lines (6) are opened on the surface of the transmission ball (5).

2. The clinical pharmacy experiment sample extraction device according to claim 1, characterized in that, The outer wall of the piston (2) is closely attached to the inner wall of the syringe (1). The total length dimensions of the syringe (1), the first limiting plate (7), the connecting columns (8) and the second limiting plate (9) are smaller than the length dimension of the threaded rod (4).

3. The clinical pharmacy experiment sample extraction device according to claim 1, characterized in that, The diameter of the transmission ball (5) is larger than the diameter of the threaded rod (4).

4. The clinical pharmacy experiment sample extraction device according to claim 1, wherein, The fixing mechanism includes a transmission plate (11), a transmission rod (13) and a fixing sleeve (14). A second bearing (12) is fixedly sleeved on the outer wall of the threaded rod (4) near the transmission ball (5). The transmission plate (11) is fixedly sleeved on the outer wall of the second bearing (12). Two transmission rods (13) are fixedly connected to the side of the transmission plate (11) away from the transmission ball (5). A fixing sleeve (14) is fixedly connected between the two transmission rods (13). The fixing sleeve (14) is slidably sleeved on the outer wall of the syringe (1). One side of the opening of the fixing sleeve (14) is fixedly connected with two connecting blocks (15). A fixing bolt (17) is threadedly connected inside the two connecting blocks (15).

5. The clinical pharmacy experiment sample extraction device according to claim 4, characterized in that, Two limiting holes (16) are opened at the corresponding parts of the first limiting plate (7) and the second limiting plate (9). The two transmission rods (13) sequentially pass through a plurality of limiting holes (16). A transparent observation window (18) is arranged on the surface of the fixing sleeve (14).

6. The clinical pharmacy experiment sample extraction device according to claim 1, wherein, A needle head (19) is clamped at the liquid inlet at the front end of the syringe (1).

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