A multi-station pharmaceutical preparation apparatus and a liquid medicine transfer device therefor

Abstract

The utility model provides a kind of multi-station medicament preparation equipment and for its liquid medicine transfer device, belong to dispensing equipment field, the multi-station medicament preparation equipment includes base, the vertical rotation installation of base one side has installation bottom plate, the surface of installation bottom plate is provided with linear guide rail one, linear guide rail one is successively slidably installed infusion bag fixed extrusion mechanism, needle fixing mechanism, oscillation mechanism along its length direction;The surface of installation bottom plate is also provided with fixed support, the surface of fixed support is rotatably installed with westlin bottle fixed mechanism, westlin bottle fixed mechanism is provided with at least one westlin bottle clamping unit, and the westlin bottle clamping unit can be located between oscillation mechanism and needle fixing mechanism.The utility model has the beneficial effects that, it is not only compact structure, small space occupation, but also can reduce production cost to a certain extent.

Description

Technical Field

[0001] This utility model belongs to the field of drug preparation equipment, specifically relating to a multi-station drug preparation equipment and a drug liquid transfer device used therein. Background Technology

[0002] In the daily medical work of hospitals, intravenous infusion is a common treatment method, and mixing the medicine from the vial into the infusion bag is an important operation in the medication preparation process.

[0003] Traditionally, this process relies primarily on manual operation by medical staff. Typically, a syringe is first used to draw medication from the IV bag, then the needle is inserted into a vial to inject the medication. The vial is then manually shaken to mix the medication, and the needle is inserted again to draw the remaining medication. The syringe is then used to inject the medication back into the IV bag, and the syringe is removed, completing the transfer of the medication (whether liquid or powder). However, this manual method has many problems, such as being cumbersome and inefficient. Therefore, in situations requiring large-volume medication preparation, the workload for medical staff is high, and there is a risk of medication errors, making it difficult to meet the actual needs of hospitals. Especially when the prepared medication contains insoluble drugs, manual shaking to dissolve them is difficult and time-consuming, often requiring prolonged standing to dissolve.

[0004] With the development of technology, although some intravenous drug preparation robots and automated drug preparation equipment have gradually appeared on the market, they still have some shortcomings. For example: 1. Existing drug preparation equipment often requires a vial fixing mechanism to move all vials together to approach or move away from the drug transfer device in order to achieve the corresponding vial puncture or withdrawal action. Therefore, this vial fixing mechanism often requires a high-power drive source, thereby increasing the overall production cost of the equipment; 2. Existing drug preparation equipment often has a large volume, but the size of existing sterile boxes is limited. Therefore, the large space occupied by the equipment itself makes it inconvenient for medical staff to perform operations such as retrieving vials and changing drug transfer devices inside the sterile box. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing drug preparation equipment, such as complex structure, large space occupation, and high production cost, by proposing and designing a multi-station drug preparation equipment and a drug liquid transfer device for it, so as to overcome the above-mentioned shortcomings and have the advantages of compact structure, small space occupation, and low production cost.

[0006] To achieve the above objectives, on the one hand, this utility model provides a multi-station pharmaceutical preparation device, which includes a base, a mounting plate vertically and rotatably mounted on one side of the base, a linear guide rail on the surface of the mounting plate, and an infusion bag fixing and squeezing mechanism, a needle fixing mechanism, and an oscillation mechanism sequentially slidably mounted on the linear guide rail along its own length direction; a fixed support is also provided on the surface of the mounting plate, and a vial fixing mechanism is rotatably mounted on the surface of the fixed support. The vial fixing mechanism is provided with at least one vial clamping unit, and the vial clamping unit can be located between the oscillation mechanism and the needle fixing mechanism.

[0007] In this case, when using this invention for medication preparation, the infusion bag can be inserted into the infusion bag fixing and squeezing mechanism, the medication transfer device into the needle fixing mechanism, and the vial into the vial fixing mechanism. Then, first, the oscillation mechanism is controlled to approach the corresponding vial, followed by the needle fixing mechanism approaching the vial to complete the insertion of the medication transfer device into the vial. Finally, the infusion bag fixing and squeezing mechanism is controlled to approach the needle fixing mechanism to complete the insertion of the medication transfer device into the infusion bag fixing and squeezing mechanism. This achieves the insertion of the infusion bag into the vial. The device connects the vials; then, by controlling the infusion bag fixing and squeezing mechanism to squeeze the infusion bag and controlling the rotation of the mounting base plate, the medication can be transferred between the infusion bag and the vial. After the medication transfer is completed, the mounting base plate can be rotated to a horizontal position on the linear guide rail, and then the oscillation mechanism, infusion bag fixing and squeezing mechanism, and needle fixing mechanism can be sequentially controlled to move away from the corresponding vial to complete the corresponding needle removal action. Finally, the mounting base plate can be rotated to a vertical position on the linear guide rail to complete the reset action. Furthermore, because this invention uses a shared linear guide rail for the oscillation mechanism, infusion bag fixing and squeezing mechanism, and needle fixing mechanism, and places the vial fixing mechanism separately on the outside of this linear guide rail, it not only makes the overall structure of the device more compact, reducing the overall space occupied, but also reduces the load on the configured drive source to a certain extent by adjusting the degrees of freedom of the needle fixing mechanism and the vial fixing mechanism, thereby achieving the goal of reducing production costs.

[0008] Furthermore, the infusion bag fixing and squeezing mechanism includes a sliding plate 1. One side of the sliding plate 1 is slidably mounted on a linear guide rail 1 via a slider 1, and the sliding plate 1 is driven by a linear drive mechanism 1, which can drive the sliding plate 1 to slide along the linear guide rail 1. The other side of the sliding plate 1 is provided with a mounting bracket 1, and the surface of the mounting bracket 1 is provided with a linear guide rail 2. A clamping plate 1 and a clamping plate 2 are slidably mounted on the linear guide rail 2. The clamping parts of the clamping plate 1 and the clamping parts of the clamping plate 2 are arranged opposite to each other. The clamping plate 1 and the clamping plate 2 are driven by a clamping drive mechanism 1, which can drive the clamping plate 1 and the clamping plate 2 to move closer or further away from each other, so as to realize the functions of clamping the infusion bag and squeezing the infusion bag.

[0009] Furthermore, the surface of the mounting bracket is also provided with an infusion bag injection end fixing claw, which fixes the injection end of the infusion bag to ensure the stability of the infusion bag.

[0010] Furthermore, an anti-fall mechanism is provided between clamp one and clamp two to prevent the infusion bag from tipping over and falling between clamp one and clamp two.

[0011] Furthermore, the needle fixing mechanism includes a sliding plate two. One side of the sliding plate two is slidably mounted on a linear guide rail one via a slider two. The sliding plate two is also connected to a linear drive mechanism two, which can drive the sliding plate two to slide along the linear guide rail one. The other side of the sliding plate two is provided with a mounting bracket two. The upper end of the mounting bracket two is provided with a needle clamp. The needle clamp can be designed by directly slotting the top of the mounting bracket two and directly using the slotted structure to clamp and fix the liquid transfer device.

[0012] Furthermore, the oscillation mechanism includes a sliding plate three. One side of the sliding plate three is slidably mounted on a linear guide rail one via a slider three. The sliding plate three is also connected to a linear drive mechanism three, which can drive the sliding plate three to slide along the linear guide rail one. The other side of the sliding plate three is provided with a mounting bracket three. An oscillator is provided at the upper end of the mounting bracket three. The oscillator can directly connect with the tail of the vial and perform vibration treatment on the vial.

[0013] Furthermore, the vial fixing mechanism includes a rotating base frame rotatably mounted on a fixed support. One side of the rotating base frame is connected to a shifting rotation drive mechanism. On the other side of the rotating base frame, at least two vial clamping units are arranged in a circular array around its own rotation center. The vial clamping units fix the vial. The shifting rotation drive mechanism adjusts the position of each vial to adjust the vial to be dispensed to the corresponding position.

[0014] Furthermore, the vial clamping unit includes a fixed base mounted on a rotating frame. A rotating shaft is fixedly installed on the fixed base, and a first clamp and a second clamp are fitted onto the surface of the rotating shaft. A spring connects the first clamp and the second clamp. When it is necessary to secure the vial, the first clamp and the second clamp can be manually pried apart first, and then the vial can be placed between the first clamp and the second clamp. Under the force of the spring, the first clamp and the second clamp will move closer together, thus securing the vial. Preferably, each vial clamping unit can be numbered and marked with stickers or other means to facilitate medical personnel in identifying the placement position of the vials.

[0015] Furthermore, a main rotation drive mechanism is installed on the mounting base plate, which drives the mounting base plate and various mechanisms installed on the mounting base plate to rotate vertically together, so as to adjust the relative position of the infusion bag fixed by the infusion bag fixing squeezing mechanism and the vial fixed by the vial fixing mechanism, so as to ensure that the medicine can flow smoothly into the corresponding vial.

[0016] On the other hand, this utility model also provides a liquid transfer device for the above-mentioned multi-station pharmaceutical preparation equipment, which includes a liquid transfer device body. A needle 1 and a needle 2 are respectively provided at both ends of the liquid transfer device body. A channel 1 and a channel 2, which are independent of each other, are connected through the needle 1 and the needle 2. The opening heights of the channel 1 and the channel 2 at the needle 1 are not equal, and the opening heights of the channel 1 and the channel 2 at the needle 2 are also not equal. A gripping part is provided on the left and right sides of the liquid transfer device body.

[0017] As can be seen from the above technical solutions, this utility model has the following advantages: First, because this utility model uses a set of linear guide rails for the oscillation mechanism, the infusion bag fixing and squeezing mechanism, and the needle fixing mechanism, and sets the vial fixing mechanism separately on the outside of the linear guide rail, the structure of the multi-station drug preparation equipment provided by this utility model is more compact, greatly reducing the overall space occupied, so that medical staff can operate it in a conventional sterile box; Second, because this utility model adjusts the degrees of freedom of the needle fixing mechanism and the vial fixing mechanism, this utility model reduces the load of the configured drive source to a certain extent, thereby achieving the purpose of reducing production costs; At the same time, because this utility model is equipped with an oscillation mechanism, compared with the manual shaking of the drug bottle in the prior art, the dissolution effect and efficiency of this utility model are significantly improved, thereby greatly improving the drug preparation efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of the infusion bag fixing mechanism, needle fixing mechanism and oscillation mechanism in this utility model;

[0021] Figure 3 This is a schematic diagram of the infusion bag fixing mechanism and the needle fixing mechanism in this utility model;

[0022] Figure 4 This is a schematic diagram of the vial clamping unit of this utility model (the spring is not shown in the figure).

[0023] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0024] In the diagram: 1. Base; 2. Mounting base plate; 3. Infusion bag fixing and squeezing mechanism; 4. Needle fixing mechanism; 5. Oscillating mechanism; 6. Vial fixing mechanism; 7. Clamping plate one; 8. Mounting bracket one; 9. Sliding plate one; 10. Linear guide rail one; 11. Sliding plate two; 12. Sliding plate three; 13. Mounting bracket two; 14. Oscillator; 15. Vial clamping unit; 16. Rotating base frame; 17. Servo motor three; 18. Linkage rod; 19. Anti-fall mechanism; 20. Clamping seat one; 21. Clamping block one; 22. Fixing seat; 23. Gripper one; 24. Gripper two; 25. Grip part; 26. Channel one; 27. Channel two. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0026] Example 1

[0027] like Figures 1 to 4 As shown in the figure, this embodiment provides a multi-station pharmaceutical preparation device, which includes a base 1. A mounting plate 2 is vertically rotatably mounted on one side of the base 1. A main rotation drive mechanism is mounted on the mounting plate 2 near the base 1. The main rotation drive mechanism drives the mounting plate 2 and each mechanism mounted on the mounting plate 2 to rotate vertically together, so as to adjust the relative position relationship of each mechanism and realize the corresponding pharmaceutical preparation function. Moreover, the main rotation drive mechanism can adopt a common rotary drive structure on the market, such as a combination of a drive motor and a gear transmission structure.

[0028] A linear guide rail 10 is provided on the side of the mounting base plate 2 away from the base 1. An infusion bag fixing and squeezing mechanism 3, a needle fixing mechanism 4, and an oscillation mechanism 5 are sequentially slidably mounted on the linear guide rail 10 along its length. A fixed support is also provided on the side of the mounting base plate 2 away from the base 1. A vial fixing mechanism 6 is rotatably mounted on the surface of the fixed support. The vial fixing mechanism 6 has at least one vial clamping unit 15, which is positioned between the oscillation mechanism 5 and the needle fixing mechanism 4.

[0029] Specifically, in this embodiment, the infusion bag fixing and squeezing mechanism 3 includes a sliding plate 9. One side of the sliding plate 9 is slidably mounted on a linear guide rail 10 via a slider. The sliding plate 9 is also connected to a linear drive mechanism 1. The linear drive mechanism 1 can drive the sliding plate 9 to slide along the linear guide rail 10. It can adopt a combination of a servo motor and a gear and rack transmission structure. That is, a servo motor 1 can be installed on the surface of the mounting base plate 2, a gear 1 can be set at the power output end of the servo motor 1, and a rack 1 can be installed on the surface of the sliding plate 9. Then, the rack 1 meshes with the gear 1, thereby controlling the sliding plate 9 to slide linearly along the linear guide rail 10 through the cooperation of the servo motor 1 and the gear and rack transmission structure. On the other side of the sliding plate 9, there is a mounting bracket 8. The surface of the mounting bracket 8 is provided with a linear guide rail 2. A clamping plate 7 and a clamping plate 2 are slidably mounted on the linear guide rail 2. The clamping part of the clamping plate 7 and the clamping part of the clamping plate 2 are arranged opposite to each other. The bottom of the clamping plate 7 and the bottom of the clamping plate 2 are connected to a clamping drive mechanism 1. The clamping drive mechanism 1 can drive the clamping plate 7 and the clamping plate 2 to move closer or further away from each other, so as to realize the functions of clamping the infusion bag and squeezing the infusion bag. Furthermore, the clamping drive mechanism can also adopt a combination of a servo motor and a rack and pinion transmission structure. That is, a servo motor can be installed on the mounting bracket 8, a gear can be set at the power output end of the servo motor, a rack can be installed on the surface of the clamping plate 7, and a rack can be installed on the surface of the clamping plate 2. Then, the rack and pinion are respectively meshed with the two sides of the gear 2. Thus, through the cooperation of the servo motor and the rack and pinion transmission structure, the clamping plate 7 and the clamping plate 2 can be controlled to move closer or further away from each other along the linear guide rail 2 to achieve the corresponding squeezing action.

[0030] Meanwhile, as a preferred embodiment, an anti-fall mechanism 19 can be provided between the first clamp 7 and the second clamp to prevent the infusion bag from tipping over and falling between the first clamp 7 and the second clamp. Specifically, the anti-fall mechanism 19 includes a mounting base installed on the first clamp 7 or the second clamp. The mounting base has an open insertion hole, and a stop bar is inserted into the insertion hole. A locking bolt is threaded onto the opening of the insertion hole, and the stop bar provides a corresponding blocking function. The gap between the stop bar and the insertion hole can be adjusted by the locking bolt to ensure that medical personnel can adjust the position of the stop bar.

[0031] The surface of the mounting bracket 18 is also provided with an infusion bag injection end fixing claw, which is used to fix the injection end of the infusion bag to ensure the stability of the infusion bag. Specifically, it includes a clamp seat 120 and a clamp seat 2 mounted on the mounting bracket 23. A connecting shaft is installed between the clamp seat 120 and the clamp seat 2, and a spring 1, a clamp block 121, a clamp block 2, and a spring 2 are sequentially sleeved on the connecting shaft. It also includes a servo motor 3317 mounted on the mounting bracket 23. The power output end of the servo motor 3317 is rotatably mounted with a connecting rod 18, and the end of the connecting rod 18 is hinged to the clamp block 2. At this time, the clamp block 2 can be controlled to slide along the connecting shaft by controlling the servo motor 3317, so as to drive the clamp block 2 to move closer to or away from the clamp block 121, thereby realizing the corresponding clamping and releasing actions. Moreover, as a preferred embodiment, a proximity switch, sensor, or other detection element can be installed at the middle position between clamping plate 7 and clamping plate 2, and the detection element can be electrically connected to servo motor 3 17. In this way, the sensor can detect whether the infusion bag is placed between clamping plate 7 and clamping plate 2, and when it is detected that an infusion bag has been placed there, the servo motor 3 17 can be controlled to perform a clamping action.

[0032] The needle fixing mechanism 4 includes a sliding plate 2 11. One side of the sliding plate 2 11 is slidably mounted on a linear guide rail 10 via a slider 2. The sliding plate 2 11 is connected to a linear drive mechanism 2, which drives the sliding plate 2 11 to slide along the linear guide rail 10. This linear drive mechanism 2 can employ a combination of a servo motor and a rack and pinion transmission structure. Specifically, a servo motor 4 can be mounted on the surface of the mounting base plate 2, a gear 3 can be installed at the power output end of the servo motor 4, and a rack 4 can be mounted on the surface of the sliding plate. The rack 4 meshes with the gear 3, thereby controlling the sliding plate 2 11 to slide linearly along the linear guide rail 10 through the cooperation of the servo motor 4 and the rack and pinion transmission structure. A mounting bracket 2 13 is provided on the other side of the sliding plate 2 11. A needle gripper is provided at the upper end of the mounting bracket 2 13. The needle gripper can be designed by directly slotting the top of the mounting bracket 2 13, and directly using this slotted structure to clamp and fix the liquid transfer device.

[0033] The oscillation mechanism 5 includes a sliding plate 3 12. One side of the sliding plate 3 12 is slidably mounted on a linear guide rail 10 via a slider 3. The sliding plate 3 12 is connected to a linear drive mechanism 3, which drives the sliding plate 3 12 to slide along the linear guide rail 10. Preferably, the linear drive mechanism 3 has a structure opposite to the linear drive mechanism 1 and the linear drive mechanism 2. The other side of the sliding plate 3 12 is provided with a mounting bracket 3. An oscillator 14 is provided at the upper end of the mounting bracket 3. The oscillator 14 can directly connect to the tail of the vial and vibrate the vial.

[0034] The vial fixing mechanism 6 includes a rotating base 16 rotatably mounted on a fixed support. A shifting rotation drive mechanism is connected to one side of the rotating base 16. This mechanism drives the rotating base 16 and all components mounted on it to rotate together, adjusting the relative positions of the components to ensure the vial is positioned between the needle fixing mechanism 4 and the oscillation mechanism 5. Furthermore, the shifting rotation drive mechanism can employ a commercially available rotary drive structure, such as a combination of a drive motor and gear transmission.

[0035] On the other side of the rotating base 16, at least two vial clamping units 15 are arranged in a circular array around its own rotation center, and the vials are fixed by these vial clamping units 15. Specifically, each vial clamping unit 15 includes a fixing seat 22 mounted on the rotating base 16, a rotating shaft fixedly mounted on the fixing seat 22, and a first clamp 23 and a second clamp 24 sleeved on the surface of the rotating shaft, with a spring connecting the first clamp 23 and the second clamp 24. When it is necessary to fix the vial, the first clamp 23 and the second clamp 24 can be manually pried apart first, and then the vial can be placed between the first clamp 23 and the second clamp 24. Under the action of the spring, the first clamp 23 and the second clamp 24 can be controlled to move closer to each other, thereby fixing the vial. Moreover, as a preferred embodiment, each vial clamping unit 15 can be numbered and marked by stickers or other means to facilitate medical staff to distinguish the placement position of the vials.

[0036] In addition, as a preferred embodiment, an isolation cover can be installed on the outside of the entire device to reduce external contamination of the infusion drugs during the drug preparation and dissolution process, and to ensure a sterile operating environment.

[0037] Example 2

[0038] like Figure 5As shown in the figure, this embodiment provides a drug transfer device for the multi-station drug dispensing equipment described in embodiment two. It includes a rectangular drug transfer device body, with a needle tip one and a needle tip two at each end. Independent channels one 26 and two 27 pass through the needle tip one and needle tip two, respectively. The opening heights of channels one 26 and two 27 at the needle tip one and two needle tips two are unequal. This difference in opening height between channels one 26 and two 27 ensures that the medication in the vial flows fully into the infusion bottle, reducing drug residue and ensuring smooth drug flow.

[0039] In addition, to facilitate medical staff to hold it, this embodiment 2 also provides gripping parts 25 on its left and right sides.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-station pharmaceutical preparation device, comprising a base, wherein a mounting plate is vertically and rotatably mounted on one side of the base; characterized in that, The surface of the mounting base plate is provided with a linear guide rail. The linear guide rail is slidably mounted with an infusion bag fixing and squeezing mechanism, a needle fixing mechanism, and an oscillation mechanism along its own length. The surface of the mounting base plate is also provided with a fixed support. The surface of the fixed support is rotatably mounted with a vial fixing mechanism. The vial fixing mechanism is provided with at least one vial clamping unit, and the vial clamping unit can be located between the oscillation mechanism and the needle fixing mechanism.

2. The multi-station pharmaceutical preparation equipment according to claim 1, characterized in that, The infusion bag fixing and squeezing mechanism includes a sliding plate 1. One side of the sliding plate 1 is slidably mounted on a linear guide rail 1 via a slider 1. The sliding plate 1 is also connected to a linear drive mechanism 1, which can drive the sliding plate 1 to slide along the linear guide rail 1. The other side of the sliding plate 1 is provided with a mounting bracket 1. The surface of the mounting bracket 1 is provided with a linear guide rail 2. A clamping plate 1 and a clamping plate 2 are slidably mounted on the linear guide rail 2. The clamping parts of the clamping plate 1 and the clamping parts of the clamping plate 2 are arranged opposite to each other. The clamping plate 1 and the clamping plate 2 are connected to a clamping drive mechanism 1, which can drive the clamping plate 1 and the clamping plate 2 to move closer or further apart.

3. The multi-station pharmaceutical preparation equipment according to claim 2, characterized in that, The surface of mounting bracket one is also equipped with clamps for fixing the injection end of the infusion bag.

4. The multi-station pharmaceutical preparation equipment according to claim 2, characterized in that, A fall protection mechanism is installed between clamp one and clamp two.

5. The multi-station pharmaceutical preparation equipment according to claim 1, characterized in that, The needle fixing mechanism includes a sliding plate 2. One side of the sliding plate 2 is slidably mounted on a linear guide rail 1 via a slider 2. The sliding plate 2 is also connected to a linear drive mechanism 2, which can drive the sliding plate 2 to slide along the linear guide rail 1. The other side of the sliding plate 2 is provided with a mounting bracket 2, and the upper end of the mounting bracket 2 is provided with a needle gripper.

6. The multi-station pharmaceutical preparation equipment according to claim 1, characterized in that, The oscillation mechanism includes a sliding plate three. One side of the sliding plate three is slidably mounted on a linear guide rail one via a slider three. The sliding plate three is also connected to a linear drive mechanism three, which can drive the sliding plate three to slide along the linear guide rail one. The other side of the sliding plate three is provided with a mounting bracket three, and an oscillator is provided at the upper end of the mounting bracket three.

7. The multi-station pharmaceutical preparation equipment according to claim 1, characterized in that, The vial fixing mechanism includes a rotating base frame rotatably mounted on a fixed support. One side of the rotating base frame is connected to a shifting rotation drive mechanism, and the other side of the rotating base frame has at least two vial clamping units arranged in a circular array around its own rotation center.

8. The multi-station pharmaceutical preparation equipment according to claim 7, characterized in that, The vial clamping unit includes a fixed base mounted on a rotating base, a rotating shaft fixedly mounted on the fixed base, and a first clamp and a second clamp sleeved on the surface of the rotating shaft, with a spring connecting the first clamp and the second clamp.

9. The multi-station pharmaceutical preparation equipment according to claim 1, characterized in that, The main rotation drive mechanism is mounted on the mounting base plate.

10. A liquid transfer device for a multi-station pharmaceutical preparation apparatus according to any one of claims 1-9, characterized in that, The device includes a drug transfer device body, with needle one and needle two respectively at both ends. Needle one and needle two are connected by independent channels one and two, and the opening heights of channels one and two at the needle one are not equal, and the opening heights of channels one and two at the needle two are also not equal. Grip parts are provided on the left and right sides of the drug transfer device body.

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