Medical liquid preparation machine and liquid preparation method thereof

Abstract

This invention discloses a medical solution dispensing machine and its dispensing method, comprising a worktable with multiple sets of dispensing racks spaced apart for sequentially arranging multiple medicine bottles. The dispensing racks are fixedly installed on the worktable by a fixed support assembly or floated up and down by an elastic shaking assembly to shake and mix the medicines in the medicine bottles. A mixing bottle for receiving the medicines to be mixed is correspondingly provided on the front side of the dispensing rack. Each set of dispensing racks has a corresponding sliding automatic suction device on one side to automatically suction and mix the medicines from multiple medicine bottles on the corresponding dispensing rack. The sliding direction includes the arrangement direction of the medicine bottles on the dispensing rack and the vertical direction. A mixing and filling device is also provided on the worktable for uniformly collecting the mixed medicines from multiple mixing bottles into a disposable infusion bag and shaking it. This invention integrates the functions of liquid extraction, injection, and mixing, is compatible with commonly packaged drugs on the market, avoids drug waste and cross-contamination, has good ergonomics, and is easy to operate.

Description

Technical Field

[0001] This invention relates to a medical solution preparation machine and its solution preparation method, belonging to the technical field of injection solution preparation equipment. Background Technology

[0002] In the field of existing drug preparation technology, the use of medicine bottles such as vials is often involved in drug preparation. A vial is a small glass container used to hold liquid medicine. Its structure includes a bottle body and a bottle head, as well as a bottleneck located in the recessed part between the bottle body and the bottle head. The capacity is generally 1 to 25 ml. It is generally used for injectable liquid medicine or powder medicine. The cap of the vial head is generally made of rubber, and a layer of metal aluminum foil is also covered on the outside of the rubber for sealing.

[0003] Currently, the typical method for preparing vials of medication involves holding the vial by hand, drawing a portion of the medication from the infusion bag with a syringe, inserting the syringe needle through the vial cap, and injecting the medication into the vial. For diluted powders, the entire amount of medication is then drawn out using the syringe. This method, which relies on holding the vial by hand, is inherently dangerous, prone to slipping, and inefficient. Therefore, there is an urgent need for a medication preparation device that reduces manual labor and risks in situations requiring the preparation of large quantities of vials of medication. Summary of the Invention

[0004] The problem this invention aims to solve is the inadequacy of existing technologies in effectively assisting medical personnel in medication preparation. It provides a desktop medical medication preparation workstation that integrates functions such as fluid extraction, injection, and mixing; is compatible with commonly available drug packaging formats (such as ampoules, vials, and infusion bags); avoids drug waste and cross-contamination; is ergonomically designed and easy to operate; and complies with medical standards.

[0005] To achieve the above-mentioned technical objectives and effects, this application provides the following technical solution:

[0006] In a first aspect, the present invention provides a medical dispensing machine, including a worktable. Multiple dispensing racks are spaced apart on the worktable for sequentially arranging multiple medicine bottles. The dispensing racks are fixedly mounted on the worktable by a fixed support assembly or are floating on the worktable by an elastic shaking assembly to shake and mix the medicines in the medicine bottles. A mixing bottle for receiving the medicines to be mixed is correspondingly arranged on the front side of each dispensing rack. Each set of dispensing racks has a sliding automatic suction device on one side to automatically suction and mix the medicines from multiple medicine bottles on the corresponding dispensing rack. The sliding direction of the automatic suction device includes the direction in which the medicine bottles on the dispensing rack are arranged and the vertical direction. The worktable is also equipped with a mixing and dispensing device for uniformly collecting the mixed medicines from multiple mixing bottles into a disposable infusion bag and shaking it.

[0007] Preferably, the dispensing rack has an inclined dispensing platform, on which multiple sets of clamping mechanisms are detachably mounted to accommodate the clamping and fixing of different types of medicine bottles, and the clamping force of the clamping mechanisms is applied in a direction parallel to the dispensing platform; and / or, The liquid preparation rack also includes a mounting base. The liquid preparation platform is convex and is fitted into the mounting base. A handle is provided on the outer wall of the liquid preparation platform.

[0008] Furthermore, the clamping mechanism includes a limiting seat, a clamping block, and an elastic element. Two limiting seats and two clamping blocks are correspondingly provided. The two limiting seats are symmetrically arranged on the liquid dispensing platform. The two clamping blocks are symmetrically arranged with clamping grooves on opposite sides. Each clamping block has at least one limiting post on its side facing the limiting seat, which slides and inserts into the limiting seat. The elastic element is disposed between the limiting seat and the clamping block to provide clamping force when the clamping block is clamped; and / or, The clamping block has a limiting block at its bottom, and the limiting seat has a limiting groove that slides and engages with the limiting block; and / or, The elastic element is a compression spring and is sleeved on the outside of the limiting post. The number of elastic elements corresponds to the number of limiting posts.

[0009] Preferably, the sliding of the automatic aspiration device in the direction of the arrangement of medicine bottles on the liquid dispensing rack is driven by a sliding component, and a lifting component is driven to slide on the sliding component to drive the automatic aspiration device to slide vertically. The lifting assembly has a lifting platform that is configured to move up and down. A fixed seat is detachably mounted on the lifting platform, and an aspiration syringe is positioned on the fixed seat. Between the fixed seat and the lifting platform, there are respectively a clamping assembly one for clamping and fixing the body of the aspiration syringe, a pulling assembly for pulling the piston rod of the aspiration syringe, and a clamping assembly two for clamping and stabilizing the needle of the aspiration syringe. The pulling assembly is a lifting structure driven by a reciprocating motor.

[0010] Furthermore, the pull-out assembly includes a transmission seat, a pull-out bracket, a drive screw, and a transmission block. The drive screw is driven and rotated on the lifting platform by the reciprocating motor. The transmission block is screwed to the drive screw to limit sliding on the lifting platform along the axial direction of the suction syringe. The transmission seat is fixedly connected to the transmission block. The pull-out bracket is detachably connected to the top of the transmission seat to engage with the piston rod of the suction syringe.

[0011] Preferably, the mixing and dispensing device includes a hanging rack and a shaking mechanism. The hanging rack is provided with multiple hanging brackets, each of which is used to hang at least one medicine bag and at least one mixing bottle. The shaking mechanism has a receiving plate and a shaking component that is poweredly connected to the receiving plate to drive the receiving plate to reciprocate. The disposable infusion bag is placed on the receiving plate, and the disposable infusion bag is connected to the multiple medicine bags and medicine bottles through at least one dispensing main pipe.

[0012] Furthermore, the shaking assembly includes a shaking seat, a connecting seat, a transmission shaft, a first drive motor, a drive seat, and a drive connecting rod. The transmission shaft is rotatably mounted on the worktable via two shaking seats. At least one connecting seat is detachably fixedly connected to the transmission shaft. The connecting seat is detachably connected to the bottom of the receiving plate. The first drive motor is mounted on the worktable. A transmission wheel is coaxially fixedly mounted on the output shaft of the first drive motor. The drive seat is fixedly connected to the bottom of the receiving plate and located above the first drive motor. The drive connecting rod is located between the transmission wheel and the drive seat, with one end rotatably connected to the transmission wheel to perform eccentric movement around the output shaft of the first drive motor. The other end of the drive connecting rod is rotatably connected to the drive seat to drive the drive seat to move up and down through eccentric movement.

[0013] Furthermore, the workbench is also equipped with a controller, a counting sensor, and a sensor plate. The controller is mounted on the workbench, and the counting sensor is detachably mounted on one side of any of the shaking seats via a positioning seat. One end of the sensor plate is fixedly connected to the end face of the transmission shaft to rotate back and forth with the transmission shaft, and the other end of the sensor plate cooperates with the counting sensor to provide feedback on the number of reciprocating rotations of the transmission shaft. The controller is electrically connected to the counting sensor and the drive motor.

[0014] Preferably, the mixing bottle is detachably placed on the front side of the dispensing rack via a positioning assembly. The positioning assembly includes positioning columns, torsion springs, clamping plates, a top seat, and a hanging seat. Two positioning columns, torsion springs, and clamping plates are correspondingly arranged, with the two positioning columns spaced apart. The torsion springs are respectively sleeved on the outside of the positioning columns. The clamping plates are rotatably sleeved on the positioning columns by the torsion springs and limited by a support body. The body of the mixing bottle is clamped by the two clamping plates. The top seat is fixedly connected to the top of the two positioning columns, and the hanging seat is provided on the front side of the top seat for hanging the bottle head; and / or, The clamping plate is rotatably equipped with clamping main plates, and the mixing bottle is clamped between the two clamping main plates.

[0015] Secondly, the present invention provides a method for preparing an injectable drug solution, using a medical solution preparation machine according to any of the above claims, comprising the following steps: Bottles of liquid medicines that need to be mixed in advance are arranged in sequence on the dispensing rack supported by the fixed support assembly. Bottles of liquid medicines that need to be mixed in advance and corresponding powder medicines are arranged in sequence on the dispensing rack supported by the elastic shaking assembly. After all the medicine bottles are placed, the automatic suction device corresponding to the dispensing rack will draw and mix the medicine according to the settings and finally collect it into the mixing bottle corresponding to the dispensing rack. The operators collect all the mixing bottles and place them uniformly on the mixing and dispensing device; The mixing and dispensing device collects the mixed medicine from all the mixing bottles into a disposable infusion bag and shakes it well.

[0016] The medical solution preparation machine and solution preparation method provided by this invention have the following advantages: 1. The clamping structure utilizes the adaptability of springs to accommodate various sizes of medicine bottles while maintaining stable clamping. The combination of a fixed support component and an elastic shaking component provides two options for dispensing conditions. The fixed support component is suitable for liquid medicines that do not require shaking during dispensing, providing a sufficiently stable environment for aspiration and injection. The elastic shaking component is suitable for dispensing conditions that require shaking and agitation, especially when mixing powdered and liquid medicines.

[0017] 2. After positioning the drug storage tank, clamping components one and two can securely and automatically clamp the aspiration syringe onto the fixed base. The sliding and lifting components can then move the aspiration syringe on the fixed base to the location of the drug storage tank to be aspirated and complete the insertion action. Subsequently, the pulling component drives the aspiration syringe to perform the aspiration operation. The entire aspiration process is automatically completed by the aspiration device, which has high aspiration efficiency. Medical personnel can avoid contact with the drug solution as much as possible, ensuring high safety. Furthermore, the pulling component uses a motor and screw feeding method, which allows for controllable stroke and higher aspiration accuracy.

[0018] 3. The solution mixing manifold can simultaneously transfer the solutions from multiple medicine bags and bottles to a disposable infusion bag. Multiple solutions can be mixed for the first time in the manifold. While the solution is being poured in, the disposable infusion bag is shaken back and forth by the receiving tray under the drive of the shaking component. This causes the mixed solution flowing into the disposable infusion bag to be shaken and mixed again, thus ensuring that the components of the infusion solution are thoroughly mixed as much as possible. Moreover, the shaking process has little contact with the outside world, which greatly reduces the risk of solution contamination. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a medical solution dispensing machine provided by the present invention; Figure 2This is a schematic diagram illustrating the connection between the dispensing rack and the storage platform, which is the main structural feature of this invention. Figure 3 for Figure 2 Enlarged diagram of section A in the middle; Figure 4 This is a structural diagram illustrating the connection between the automatic suction device and the worktable, which is the main feature of this invention. Figure 5 This is a schematic diagram illustrating the overall structure of the automatic suction device of the present invention. Figure 1 ; Figure 6 This is a schematic diagram illustrating the overall structure of the automatic suction device of the present invention. Figure 2 ; Figure 7 This is an exploded structural diagram illustrating the overall structure of the automatic suction device of this invention. Figure 1 ; Figure 8 This is an exploded structural diagram illustrating the overall structure of the automatic suction device of this invention. Figure 2 ; Figure 9 This is a schematic diagram illustrating the connection between the mixing and dispensing device and the workbench, which is the main structural feature of this invention. Figure 10 This is a schematic diagram illustrating the connection structure of the mixing and filling device during the filling of a disposable infusion bag, which is the main feature of this invention. Figure 11 for Figure 10 Enlarged diagram of section B in the middle; Figure 12 for Figure 10 Enlarged diagram of section C; Figure 13 This is a structural diagram illustrating the overall structure of the positioning component, which is the main feature of this invention.

[0020] In the picture: 1-Workbench; 2-Dispensing rack; 21-Dispensing platform; 211-Connecting hole; 22-Mounting base; 3-Fixed support assembly; 4-Elastic shaking assembly; 41-Support column two; 411-Limiting protrusion; 42-Reciprocating spring; 43-Adapter base; 44-Drive motor two; 45-Oscillating cam; 5-Automatic suction device; 51-Clamping assembly one; 511-Guide rail two; 512-Guide rail slide two; 513-Clamping base; 514-Clamping block one; 515-Clamping drive component; 5151-Reciprocating motor two; 5152-Drive gear; 5153-Transmission gear block; 5154-Clamping power 52-Seat; 521-Reciprocating Motor 1; 522-Transmission Seat; 523-Slip-out Card Seat; 524-Drive Screw; 525-Transmission Block; 53-Clamping Assembly 2; 531-Clamping Block 2; 532-Slot; 6-Fixed Seat; 7-Mixing and Filling Device; 71-Hanging Bracket; 711-Mounting Feet; 712-Mounting Column; 713-Horizontal Hanging Rod; 714-Optical Axis Cross Clamp; 72-Shaking Mechanism; 721-Receiving Plate; 722-Shaking Assembly; 7221-Shaking Seat; 7222-Through-Connecting Seat; 722A-Through-Connecting Hole; 722B-Clamping Gap; 7223-Transmission Shaft; 7224-Drive motor 1; 7225-Drive base; 7226-Drive linkage; 7227-Transmission wheel; 722C-Transmission hole; 8-Placement stage; 9-Clamping mechanism; 91-Limit seat; 911-Limit groove; 92-Clamping block; 921-Clamping groove; 922-Limit post; 923-Limit block; 93-Elastic element; 10-Cover; 11-Sliding assembly; 12-Lifting assembly; 121-Lifting platform; 13-Telescopic assembly; 131-Fixed connecting seat; 1311-Oval adjustment hole; 132-Sliding connecting seat; 1321-Positioning hole; 14-Suction syringe; 15-Frame 16-Guide rail seat; 17-Guide rail one; 18-Mounting rail seat; 19-Guide rail slide one; 20-Sensor one; 23-Sensor two; 24-Hanging bracket; 25-Mixing bottle; 26-Disposable infusion bag; 27-Dispensing main pipe; 28-Drug bag; 29-Drug bottle; 30-Flow limiting clamp; 31-Control unit; 32-Counting sensor; 33-Sensing plate; 34-Shielding cover; 35-Positioning component; 351-Positioning column; 352-Torsion spring; 353-Clamping plate; 354-Top seat; 355-Hanging seat; 36-Clamping main board; 37-Handle; 38-Mounting base. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figure 1 A medical dispensing machine includes a worktable 1. Multiple dispensing racks 2 are installed at intervals on the worktable 1 for arranging multiple medicine bottles 29 sequentially. The dispensing racks 2 are fixedly installed on the worktable 1 by a fixed support component 3 or are set on the worktable 1 by an elastic shaking component 4 to shake and agitate the medicines in the medicine bottles 29. A mixing bottle 25 for receiving the medicines to be mixed is correspondingly mounted on the front side of the dispensing rack 2, thereby realizing the priority mixing of easily mixed medicines. Finally, the several mixed medicines are further mixed evenly to improve the mixing efficiency. Each set of dispensing racks 2 is equipped with a sliding automatic suction device 5 on one side to automatically suction and mix the medicines from multiple medicine bottles 29 on the corresponding dispensing rack 2. The sliding direction of the automatic suction device 5 includes the arrangement direction of the medicine bottles 29 on the dispensing rack 2 and the vertical direction. A mixing and filling device 7 is also installed on the worktable 1 to collect the mixed medicines from multiple mixing bottles 25 into a disposable infusion bag 26 and shake it evenly.

[0023] A control unit 31 is also installed on the workbench 1. The control unit 31 is installed on the workbench 1 for starting and controlling the electrical components of the liquid preparation machine, and has a preset start and control program, so that the electrical components of the liquid preparation machine of this application can be operated and controlled in sequence to complete the entire liquid preparation operation. In this embodiment, the control unit 31 is a PC, and the application of all electrical components is existing technology. Therefore, the control of the control unit 31 is also a mature existing technology, which will not be described in detail.

[0024] Reference Figures 1-3 Multiple sets of dispensing racks 2 are mounted on the workbench 1 via a platform 8. Each dispensing rack 2 has an inclined dispensing platform 21. Multiple sets of clamping mechanisms 9 are detachably installed on the dispensing platform 21 to accommodate the clamping and fixing of different types of medicine bottles 29. The clamping force of the clamping mechanism 9 is applied in a direction parallel to the dispensing platform 21, which allows the medicine bottles 29 to be placed at an incline. Gravity helps the liquid to gather on one side of the bottle, making it easier for the syringe needle to align with the liquid surface, reducing residue, and thus achieving a cleaner aspiration.

[0025] Reference Figures 1-3In a further embodiment, the clamping mechanism 9 includes a limiting seat 91, a clamping block 92, and an elastic element 93. Two limiting seats 91 and clamping blocks 92 are correspondingly provided. The two limiting seats 91 are symmetrically mounted on the dispensing platform 21. The two clamping blocks 92 are symmetrically arranged, with clamping grooves 921 on opposite sides. The clamping grooves 921 are triangularly arranged to accommodate various shapes of medicine bottles 29. A chamfer is provided on the side wall of the top opening of the clamping groove 921 to guide the medicine bottle 29 during placement, facilitating its rapid entry. At least one limiting post 922 is integrally formed on the side of the clamping block 92 facing the limiting seat 91, which slides and inserts into the limiting block 923. The elastic element 93 is installed between the limiting seat 91 and the clamping block 92 to provide clamping force when the clamping block 92 is clamped. In this embodiment, the elastic element 93 is a compression spring and is sleeved on the outside of the limiting post 922. The number of elastic elements 93 corresponds to the number of limiting posts 922, preferably two.

[0026] When placing and clamping the medicine bottle 29, the preparation personnel confirm the desired placement position of the medicine bottle 29, place the medicine bottle 29 against the chamfer of the clamping groove 921 of the clamping block 92 at the corresponding position, and apply sufficient external force. The external force is transmitted through the medicine bottle to the clamping block 92, causing the two clamping blocks 92 to move away from each other. This allows the elastic element 93 to be compressed, gaining elastic potential energy, while the medicine bottle 29 enters between the two clamping blocks 92. After the medicine bottle 29 completely falls into the clamping groove 921, the pressing force on the clamping blocks 92 disappears, and the elastic potential energy of both clamping blocks 92 is released, thereby pushing the two clamping blocks 92 closer together to achieve stable clamping of the medicine bottle 29. In a feasible embodiment, the preparation personnel can also directly separate the two clamping blocks 92 by hand to insert the medicine bottle 29 for clamping.

[0027] In a further embodiment, a limiting block 923 is integrally formed at the bottom of the clamping block 92, and a limiting groove 911 is provided on the limiting seat 91 to slide and engage with the limiting block 923, thereby further ensuring the stability of the clamping block 92 when clamping.

[0028] Reference Figure 2 and Figure 3 The limiting seat 91 and the dispensing platform 21 are connected by bolts. The dispensing platform 21 has multiple connecting holes 211 evenly spaced on both sides along the clamping direction of the two clamping blocks 92 for connecting with bolts. While realizing the detachable connection and fixation between the limiting seat 91 and the dispensing platform 21, the distance between the two limiting seats 91 can be adjusted according to the specifications of the medicine bottle 29, so as to match more specifications of medicine bottles 29 and improve the adaptability of the clamping mechanism 9.

[0029] Reference Figure 2 and Figure 3The dispensing rack 2 also includes a mounting base 22. The dispensing platform 21 is convex and is fitted into the mounting base 22. A handle 37 is installed on the outer wall of the dispensing platform 21. With this configuration, before dispensing, the operator can clamp and fix all the bottles 29 to be mixed using multiple clamping mechanisms 9 on the same dispensing platform 21 before inserting them into the mounting base 22 for positioning. When retrieving the bottles, simply pull out the dispensing platform 21 using the handle 37 to handle all the bottles at once, which is convenient and quick. In feasible embodiments, the mounting base 22 can be of any shape; in this embodiment, the mounting base 22 is a rectangular mounting base 22.

[0030] Reference Figure 1 and Figure 2 The fixed support assembly 3 includes multiple support columns, one end of which is inserted and fixed to the mounting base 22, and the other end is inserted and fixed to the shelf 8. In this embodiment, four support columns are preferably installed at the four corners of the mounting base 22 to ensure the overall placement stability of the liquid dispensing rack 2.

[0031] The elastic shaking assembly 4 includes a second support column 41, a reciprocating spring 42, an adapter 43, a second drive motor 44, and an oscillating cam 45. Multiple second support columns 41 and reciprocating springs 42 are correspondingly arranged. The second support column 41 passes through the mounting base 22 and is inserted into the platform 8. The reciprocating spring 42 is sleeved on the second support column 41 and clamped between the platform 8 and the mounting base 22. The top of the second support column 41 has a limiting protrusion 411 to restrict the sliding of the mounting base 22. The second drive motor 44 is mounted on the bottom of the mounting base 22 via the adapter 43. The oscillating cam 45 is sleeved and fixed on the output shaft of the second drive motor 44. The oscillating cam 45 rotates with the output shaft of the second drive motor 44 to reciprocate and impact the mounting base 22, thereby causing the mounting base 22 and the reciprocating spring 42 to cooperate in achieving rapid up-and-down shaking, thus achieving shaking of the medicine in the medicine bottle 29 placed on the dispensing rack 2 mounted on the platform 8 via the elastic shaking assembly 4. In this embodiment, the drive motor 44 is a servo motor, and the power supply is AC power, which is existing technology and will not be described in detail.

[0032] In this embodiment, the configuration personnel select the specific installation method of the liquid preparation rack 2 according to the preparation requirements. In actual application, at least one set of liquid preparation rack 2 installed by the fixed support component 3 and one set of liquid preparation rack 2 installed by the elastic shaking component 4 are guaranteed.

[0033] Reference Figure 1 and Figure 2 The mounting base 22 can also be bolted with a cover 10. The clamping mechanism 9 is enclosed in the cover 10 to provide protection, preventing the possibility of liquid leakage during the preparation process from corroding the elastic parts 93, etc., and thus extending the service life.

[0034] Reference Figure 1 , Figure 4 and Figure 5 The automatic suction device 5 slides on the liquid preparation rack 2 in the direction of the arrangement of medicine bottles 29 through the sliding assembly 11. The sliding assembly 11 is driven by the lifting assembly 12 to drive the automatic suction device 5 to slide vertically. In this embodiment, the sliding assembly 11 and the lifting assembly 12 include, but are not limited to, lifting and sliding mechanisms driven by motor and synchronous belt, lifting and sliding mechanisms driven by motor and ball screw, or lifting and sliding mechanisms driven by chain / sprocket and motor synchronously. These are all existing technologies and will not be described in detail.

[0035] Furthermore, the lifting assembly 12 has a lifting platform 121 that is configured to lift up and down. A fixed seat 6 is detachably connected to the lifting platform 121 via a telescopic assembly 13, and a suction syringe 14 is positioned and placed on the fixed seat 6.

[0036] Specifically, the telescopic assembly 13 includes at least one set of correspondingly arranged fixed connecting seats 131 and sliding connecting seats 132. The fixed connecting seats 131 are bolted to the lifting platform 121. One end of the sliding connecting seat 132 is slidably inserted into the fixed connecting seat 131, and the other end is bolted to the fixed seat 6 to move the fixed seat 6 closer to or away from the lifting platform 121. This allows for adjustment of the distance between the fixed seat 6 and the lifting platform 121, improving the adaptability of the fixed seat 6 and the position of the suction syringe 14. In this embodiment, the telescopic assembly 13 preferably has two sets of symmetrically arranged fixed connecting seats 131 and sliding connecting seats 132, giving the device better stability.

[0037] The sliding connecting seat 132 is provided with at least one positioning hole 1321, and the fixed connecting seat 131 is provided with a waist-shaped adjustment hole 1311 corresponding to the positioning hole 1321. The relative position of the fixed connecting seat 131 and the sliding connecting seat 132 is locked by a positioning bolt passing through the positioning hole 1321 and the waist-shaped adjustment hole 1311 and a positioning nut screwed to the positioning bolt.

[0038] Reference Figures 4-8 The automatic aspiration device 5 includes a clamping assembly 51 for clamping and fixing the body of the aspiration syringe 14, a pulling assembly 52 for pulling the piston rod of the aspiration syringe 14, and a clamping assembly 53 for clamping and securing the needle of the aspiration syringe 14, all installed between the fixed base 6 and the lifting platform 121. This achieves stable clamping of the aspiration syringe 14 as a whole. The pulling assembly 52 is a lifting structure driven by a reciprocating motor 521, with controllable stroke and higher aspiration accuracy. A mounting base 15 for positioning and placing the aspiration syringe 14 is fixedly installed on the fixed base 6 by bolts. The mounting base 15 is used for initial positioning and clamping of the body of the aspiration syringe 14, thereby avoiding the need for medical personnel to manually grasp the aspiration syringe 14 while waiting for the clamping assembly 51 and the clamping assembly 53 to clamp it, further improving installation efficiency.

[0039] Furthermore, the pull-out assembly 52 includes a transmission base 522, a pull-out bracket 523, a drive screw 524, and a transmission block 525. The drive screw 524 is driven to rotate on the lifting platform 121 by a reciprocating motor 521. Specifically, a guide rail base 16 is fixedly installed on the lifting platform 121 by bolts, and a guide rail 17 is fixedly installed on the guide rail base 16 by bolts. Mounting rail bases 18 are fixedly connected to both ends of the guide rail 17 by bolts. The drive screw 524 is rotatably installed on the mounting rail bases 18 at both ends. The reciprocating motor 521 is installed on one of the mounting rail bases 18 and is coaxially fixedly connected to the drive screw 524. A guide rail slide 19 is slidably provided on the guide rail 17, and the transmission block 525 is fixedly connected to the guide rail slide 19 by bolts. The transmission block 525 is simultaneously screwed to the drive screw 524 to limit its sliding movement on the lifting platform 121 along the axial direction of the suction syringe 14. The transmission seat 522 and the transmission block 525 are fixedly connected by bolts. The pull-out bracket 523 is detachably connected to the top of the transmission seat 522 by bolts to engage with the piston rod of the suction syringe 14. Thus, the transmission seat 522 can drive the pull-out bracket 523 to pull up or press down the piston rod of the suction syringe 14 to achieve the suction operation of the suction syringe 14. In this embodiment, the reciprocating motor 521 is a bidirectional servo motor, which is existing technology and will not be described in detail.

[0040] Clamping assembly 51 includes guide rail 2 511, guide rail slide 2 512, clamping seat 513, clamping block 1 514, and clamping drive component 515. Guide rail 2 511 is detachably mounted on the bottom side of the fixed base 6 away from the lifting platform 121 by bolts, and the length direction of guide rail 2 511 is perpendicular to the axis of the suction syringe 14. There are two guide rail slides 2 512, clamping seat 513, and clamping block 1 514 respectively. One of the guide rail slides 2 512 is bolted to the bottom side of the fixed base 6. The first guide rail is fixed to the second guide rail 511. The second guide rail slide 512 is driven to slide on the second guide rail 511 by the clamping drive component 515 installed on the fixed base 6 to approach or move away from the fixed guide rail slide 512. The clamping base 513 is detachably connected to the corresponding guide rail slide 512 by bolts. The two clamping blocks 92 are symmetrically installed on the corresponding clamping bases 513, thereby completing the clamping of the suction syringe 14 body through the two clamping blocks 92.

[0041] In a further embodiment, the clamping drive component 515 includes a reciprocating motor 5151, a drive gear 5152, a transmission gear block 5153, and a clamping power seat 5154. The reciprocating motor 5151 is fixedly mounted on the rear side of the fixed base 6, and the drive gear 5152 is sleeved on its output shaft. At least one clamping power seat 5154 is mounted thereon. One end of the clamping power seat 5154 passes through the fixed base 6 and is bolted to the sliding guide rail slide 512. The other end is located on the side of the fixed base 6 facing the lifting platform 121 and is bolted to the transmission gear block 5153. The transmission gear block 5153 meshes with the drive gear 5152 for power connection. Thus, the movement of the transmission gear block 5153 and the drive gear 5152 drives the sliding of the guide rail slide 512, achieving the purpose of moving away from or closer to the fixed side guide rail slide 512. In this embodiment, the reciprocating motor 5151 is a bidirectional servo motor, and two clamping power seats 5154 are installed vertically spaced and staggered.

[0042] The clamping assembly 2 53 includes two clamping blocks 2 531 that fit together. The two clamping blocks 2 531 are detachably connected to the clamping seat 513 by bolts. When the two clamping blocks 2 531 are engaged, they form a slot 532 for clamping the needle of the aspiration syringe 14. In this embodiment, the slot 532 is formed on one of the clamping blocks 2 531, and the side wall of the opening of the slot 532 is machined with a rounded corner to guide the clamping of the needle of the aspiration syringe 14.

[0043] Reference Figure 6 and Figure 8 A sensor 20 for sensing the syringe 14 is installed on the outer wall of the clamping block 92 on the fixed side guide slide 512. In feasible embodiments, the sensor 20 includes, but is not limited to, a proximity switch or a photoelectric sensor. A sensor 23 for sensing the medicine bottle 29 is provided on the side of the fixed seat 6 away from the lifting platform 121. In feasible embodiments, the sensor 23 includes, but is not limited to, a photoelectric sensor or a position sensor. During automatic aspiration, the controller 31 receives the position information of the syringe 14 and the installation position information of the medicine bottle 29 from the sensors and controls the operation of each electrical component to complete the movement and aspiration operation.

[0044] Reference Figures 9-12The mixing and dispensing device 7 includes a hanger 71 and a shaking mechanism 72. The hanger 71 has multiple mounting brackets 24, each for mounting at least one medicine bag 28 and at least one mixing bottle 25. The shaking mechanism 72 is installed on one side of the hanger 71 and has a receiving plate 721 and a shaking component 722 that is powered to drive the receiving plate 721 to reciprocate. A disposable infusion bag 26 is placed on the receiving plate 721. The disposable infusion bag 26 is connected to multiple medicine bags 28 and medicine bottles 29 through at least one main dispensing pipe 27 to simultaneously dispense multiple component medicines into the disposable infusion bag 26. The medicines can be initially mixed within the main dispensing pipe 27, and the reciprocating shaking of the receiving plate 721 further promotes uniform mixing of the mixed medicines flowing into the disposable infusion bag 26. The shaking process involves minimal external contact, greatly reducing the risk of medicine contamination while ensuring the shaking rate.

[0045] In a further embodiment, the bracket 71 includes mounting feet 711, mounting columns 712, horizontal hanging rods 713, and optical axis cross clamps 714. Two mounting feet 711, mounting columns 712, and optical axis cross clamps 714 are installed correspondingly. The two mounting feet 711 are spaced apart and detachably connected to the workbench 1 by bolts. The mounting columns 712 are inserted and fixed in the corresponding mounting feet 711 and can be further tightened by tightening bolts. The horizontal hanging rods 713 are set perpendicular to the two mounting columns 712 and their two ends are fixedly connected to the corresponding mounting columns 712 by optical axis cross clamps 714. During installation, the hanging height of the horizontal hanging rods 713 can be conveniently and quickly adjusted according to the needs. In this embodiment, the installation and use of the optical axis cross clamps 714 are existing technologies and will not be described in detail.

[0046] The number of liquid dispensing main pipes 27 corresponds to the number of hanging racks 24, and they are connected to the medicine bags 28 and medicine bottles 29 on the corresponding hanging racks 24. The liquid dispensing main pipes 27 have multiple connecting pipes that connect the medicine bags 28 and medicine bottles 29. A flow limiting clamp 30 is installed outside the connecting pipes to control the opening and closing of the connecting pipes and the flow rate.

[0047] Reference Figures 10-12 The shaking assembly 722 includes a shaking seat 7221, a connecting seat 7222, a transmission shaft 7223, a drive motor 7224, a drive seat 7225, and a drive connecting rod 7226.

[0048] A drive shaft 7223 is rotatably mounted on a workbench 1 via two spaced-apart rocker seats 7221 each fitted with bearings. At least one through-hole seat 7222 is detachably and fixedly connected to the drive shaft 7223. The through-hole seat 7222 is detachably connected to the bottom of a receiving plate 721 by bolts. A drive motor 7224 is mounted on the workbench 1. A drive wheel 7227 is coaxially fixedly sleeved on the output shaft of the drive motor 7224. A drive seat 7225 is bolted to the bottom of the receiving plate 721 and located above the drive motor 7224. A drive linkage 7226 is mounted between the drive wheel 7227 and the drive seat 7225, with one end rotatably connected to the drive wheel 7227 to perform eccentric movement around the output shaft of the drive motor 7224. The other end of the drive linkage 7226 is rotatably connected to the drive seat 7225 to drive the drive seat 7225 up and down through the eccentric movement. In this embodiment, the drive motor 7224 is a servo motor, but a stepper motor can also be used. Two symmetrically installed connectors 7222 are preferred, and the drive seat 7225 is installed in the middle of the receiving plate 721 and located between the two connectors 7222, which can improve the stability of the receiving plate 721 when it shakes up and down.

[0049] In a further embodiment, the through-hole 7222 is bolted to the bottom of the receiving plate 721. The through-hole 7222 has a through hole 722A for the drive shaft 7223 to pass through. A clamping gap 722B communicating with the through hole 722A is provided on one side of the through-hole 7222. The spacing of the clamping gap 722B is adjusted by adjusting bolts that pass through the clamping gap 722B and are screwed to the through-hole 7222, making disassembly and assembly convenient.

[0050] Reference Figure 10 and Figure 12The workbench 1 is also equipped with a counting sensor 32 and a sensing plate 33. The counting sensor 32 is detachably mounted on one side of any shaking seat 7221 via a mounting base 38 on the workbench 1, which is connected to the mounting base 38 by bolts. One end of the sensing plate 33 is fixedly connected to the end face of the drive shaft 7223 to rotate back and forth with the drive shaft 7223. The other end of the sensing plate 33 cooperates with the counting sensor 32 to provide feedback on the number of reciprocating rotations of the drive shaft 7223. In feasible embodiments, the counting sensor 32 includes, but is not limited to, a photoelectric switch, a Hall sensor, or an inductive proximity switch. In this embodiment, the counting sensor 32 is a photoelectric sensor, i.e., a photoelectric switch. When the sensing plate 33 rotates past the photoelectric sensor, it blocks the light path, triggering a level transition (high → low or low → high), and the microcontroller counts once. The control unit 31 is electrically connected to the counting sensor 32 and the drive motor. The control unit 31 is equipped with control software adapted to the drive motor 7224 and signal acquisition and processing software adapted to the photoelectric sensor. The operator can set the shaking time or number of times of the receiving plate 721 according to the drug mixing characteristics through the control unit 31 and then start the drive motor 7224. The counting sensor 32 provides timely feedback. When the shaking time or number of times reaches the target value, the control unit 31 immediately shuts off the drive motor 7224.

[0051] Reference Figure 10 and Figure 11 The transmission wheel 7227 has multiple transmission holes 722C for connecting the drive link 7226. The multiple transmission holes 722C are evenly spaced around the circumference of the transmission wheel 7227. In this embodiment, four transmission holes 722C are preferably provided, so that the transmission wheel 7227 can be quickly connected to the transmission link after being sleeved and fixed, which is more convenient and faster.

[0052] Reference Figure 1 and Figure 9 The workbench 1 is equipped with a cover 34 that covers the shaking component 722. The cover 34 passes through the connection between the shaking component 722 and the receiving plate 721. The cover 34 can protect the shaking component 722 and prevent damage to the various parts of the shaking component 722, especially the drive motor 7224, that may occur during operation, thereby improving the service life of the device.

[0053] Reference Figure 1 and Figure 13The mixing bottle 25 is detachably installed on the front side of the dispensing rack 2 via a positioning assembly 35. The positioning assembly 35 includes a positioning column 351, a torsion spring 352, a clamping plate 353, a top seat 354, and a hanging seat 355. There are two positioning columns 351, torsion springs 352, and clamping plates 353. The two positioning columns 351 are spaced apart. The torsion springs 352 are respectively sleeved on the outside of the positioning columns 351. The clamping plates 353 are rotated and sleeved on the positioning columns 351 by the torsion springs 352 and are limited by the support body. The bottle body of the mixing bottle 25 is clamped by the two clamping plates 353. The top seat 354 is fixedly connected to the top of the two positioning columns 351 by bolts. The hanging seat 355 is fixedly installed on the front side of the top seat 354 by bolts for hanging the bottle head of the mixing bottle 25. When performing the liquid preparation operation, the mixing bottle 25 is positioned by the hanging seat 355 and then clamped by the clamping plate 353 to achieve a stable position. Then, all the medicine bottles 29 are placed in the liquid preparation rack 2 in sequence. The medicine can then be drawn or mixed by the automatic suction device 5 and then injected into the mixing bottle 25.

[0054] A clamping main plate 36 is rotatably mounted on the clamping plate 353. The mixing bottle 25 is clamped between the two clamping main plates 36. The clamping main plates 36, which are rotatably set, enable the clamping of the mixing bottle 25 to have a certain adaptability, such as mixing bottles 25 of different diameters or shapes.

[0055] The present invention also provides a method for preparing an injectable drug solution, using a medical solution preparation machine according to any of the above claims, comprising the following steps: The liquid medicine bottles 29 that need to be mixed in advance are arranged in sequence on the dispensing rack 2 supported by the fixed support component 3, or the liquid medicine bottles 29 that need to be mixed in advance and the corresponding powder medicine bottles are arranged in sequence on the dispensing rack 2 supported by the elastic shaking component 4. After all the medicine bottles 29 are placed, the automatic suction device 5 corresponding to the liquid preparation rack 2 will perform liquid suction and mixing according to the settings and finally collect the mixture into the mixing bottle 25 corresponding to the liquid preparation rack 2. The workers collected all the mixing bottles 25 and placed them uniformly on the mixing and dispensing device 7; The mixing and dispensing device 7 collects the mixed medicine from all the mixing bottles 25 into the disposable infusion bag 26 and shakes it well.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A medical solution preparation machine, characterized in that, The device includes a workbench with multiple sets of dispensing racks spaced apart for sequentially arranging multiple medicine bottles. The dispensing racks are either fixedly mounted on the workbench via a fixed support assembly or float vertically on the workbench via an elastic shaking assembly to agitate the medicines inside the bottles. A mixing bottle for receiving the medicines to be mixed is positioned at the front of each dispensing rack. Each set of dispensing racks has a sliding automatic suction device on one side to automatically aspirate and mix the medicines from multiple bottles on the corresponding rack. The sliding direction of the automatic suction device includes both the direction in which the medicine bottles are arranged on the dispensing rack and the vertical direction. The workbench is also equipped with a mixing and dispensing device, which is used to collect the mixed medicine from multiple mixing bottles into a disposable infusion bag and shake it well.

2. The medical solution preparation machine as described in claim 1, characterized in that, The dispensing rack has an inclined dispensing platform, on which multiple sets of clamping mechanisms are detachably mounted to accommodate the clamping and fixing of different types of medicine bottles. The clamping force of the clamping mechanisms is applied in a direction parallel to the dispensing platform; and / or, The liquid preparation rack also includes a mounting base. The liquid preparation platform is convex and is fitted into the mounting base. A handle is provided on the outer wall of the liquid preparation platform.

3. The medical solution preparation machine as described in claim 2, characterized in that, The clamping mechanism includes a limiting seat, a clamping block, and an elastic element. Two limiting seats and two clamping blocks are correspondingly provided. The two limiting seats are symmetrically arranged on the dispensing platform. The two clamping blocks are symmetrically arranged, with clamping grooves on opposite sides. Each clamping block has at least one limiting post on its side facing the limiting seat, which slides and inserts into the limiting seat. The elastic element is disposed between the limiting seat and the clamping block to provide clamping force when the clamping block is clamped; and / or, The clamping block has a limiting block at its bottom, and the limiting seat has a limiting groove that slides and engages with the limiting block; and / or, The elastic element is a compression spring and is sleeved on the outside of the limiting post. The number of elastic elements corresponds to the number of limiting posts.

4. The medical solution preparation machine as described in claim 1, characterized in that, The sliding of the automatic suction device in the direction of the arrangement of the medicine bottles on the liquid dispensing rack is driven by a sliding component, and a lifting component is driven to slide on the sliding component to drive the automatic suction device to slide vertically. The lifting assembly has a lifting platform that is configured to move up and down. A fixed seat is detachably mounted on the lifting platform, and an aspiration syringe is positioned on the fixed seat. Between the fixed seat and the lifting platform, there are respectively a clamping assembly one for clamping and fixing the body of the aspiration syringe, a pulling assembly for pulling the piston rod of the aspiration syringe, and a clamping assembly two for clamping and stabilizing the needle of the aspiration syringe. The pulling assembly is a lifting structure driven by a reciprocating motor.

5. The medical solution preparation machine as described in claim 4, characterized in that, The pull-out assembly includes a transmission base, a pull-out bracket, a drive screw, and a transmission block. The drive screw is driven and rotated on the lifting platform by the reciprocating motor. The transmission block is screwed to the drive screw to limit sliding on the lifting platform along the axial direction of the suction syringe. The transmission base is fixedly connected to the transmission block. The pull-out bracket is detachably connected to the top of the transmission base to engage with the piston rod of the suction syringe.

6. The medical solution preparation machine as described in claim 1, characterized in that, The mixing and dispensing device includes a hanging rack and a shaking mechanism. The hanging rack is provided with multiple hanging brackets, each of which is used to hang at least one medicine bag and at least one mixing bottle. The shaking mechanism has a receiving plate and a shaking component that is poweredly connected to the receiving plate to drive the receiving plate to reciprocate. The disposable infusion bag is placed on the receiving plate, and the disposable infusion bag is connected to the multiple medicine bags and medicine bottles through at least one main dispensing pipe.

7. The medical solution preparation machine as described in claim 6, characterized in that, The shaking assembly includes a shaking base, a connecting base, a transmission shaft, a first drive motor, a drive seat, and a drive connecting rod. The transmission shaft is rotatably mounted on the worktable via two shaking bases. At least one connecting base is detachably and fixedly connected to the transmission shaft. The connecting base is detachably connected to the bottom of the receiving plate. The first drive motor is mounted on the worktable. A transmission wheel is coaxially and fixedly mounted on the output shaft of the first drive motor. The drive seat is fixedly connected to the bottom of the receiving plate and located above the first drive motor. The drive connecting rod is located between the transmission wheel and the drive seat, with one end rotatably connected to the transmission wheel to perform eccentric movement around the output shaft of the first drive motor. The other end of the drive connecting rod is rotatably connected to the drive seat to drive the drive seat to move up and down through the eccentric movement.

8. The medical solution preparation machine as described in claim 7, characterized in that, The workbench is also equipped with a controller, a counting sensor, and a sensor plate. The controller is set on the workbench. The counting sensor is detachably set on one side of any of the shaking seats via a positioning seat. One end of the sensor plate is fixedly connected to the end face of the transmission shaft to rotate back and forth with the transmission shaft. The other end of the sensor plate cooperates with the counting sensor to provide feedback on the number of reciprocating rotations of the transmission shaft. The controller is electrically connected to the counting sensor and the drive motor.

9. The medical solution preparation machine as described in claim 1, characterized in that, The mixing bottle is detachably placed on the front side of the dispensing rack via a positioning assembly. The positioning assembly includes positioning columns, torsion springs, clamping plates, a top seat, and a hanging seat. Two positioning columns, torsion springs, and clamping plates are correspondingly arranged, with the two positioning columns spaced apart. The torsion springs are respectively sleeved on the outside of the positioning columns. The clamping plates are rotatably sleeved on the positioning columns by the torsion springs and limited by a support body. The body of the mixing bottle is clamped by the two clamping plates. The top seat is fixedly connected to the top of the two positioning columns. The hanging seat is provided on the front side of the top seat for hanging the bottle head; and / or... The clamping plate is rotatably equipped with clamping main plates, and the mixing bottle is clamped between the two clamping main plates.

10. A method for preparing an injectable drug solution, characterized in that, The application of the medical solution preparation machine as described in any one of claims 1-9 for solution preparation includes the following steps: Bottles of liquid medicines that need to be mixed in advance are arranged in sequence on the dispensing rack supported by the fixed support assembly. Bottles of liquid medicines that need to be mixed in advance and corresponding powder medicines are arranged in sequence on the dispensing rack supported by the elastic shaking assembly. After all the medicine bottles are placed, the automatic suction device corresponding to the dispensing rack will draw and mix the medicine according to the settings and finally collect it into the mixing bottle corresponding to the dispensing rack. The operators collect all the mixing bottles and place them uniformly on the mixing and dispensing device; The mixing and dispensing device collects the mixed medicine from all the mixing bottles into a disposable infusion bag and shakes it well.

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