A tumor care compounding device and method of use thereof

Abstract

The present application belongs to the technical field of medical apparatus and instruments, in particular to a tumor nursing dispensing device and its using method, aiming at solving the problem of liquid back-spraying and poor dissolving effect of the existing dispensing method, the device comprises a base, a bearing tray, a lifting arm and an injection mechanism, the injection mechanism comprises a sliding groove and a pressing plate, the outer wall of the piston cylinder is provided with a back-spraying prevention mechanism, which comprises a fixing ring and an outer sleeve, when the needle is pierced, the positive pressure generated in the bottle is introduced into the air bag to absorb the pressure and prevent the liquid from back-spraying when the needle is pulled out, a shaking mechanism is arranged between the base and the bearing tray, comprising a metal ring, a vertical rod and a supporting mechanism, the mechanism can make the bearing tray produce a conical swing trajectory similar to nutation while driving the bearing tray to rotate, forming liquid vortex in the medicine bottle to gently dissolve the freeze-dried powder of chemotherapy, avoiding the generation of harmful bubbles, the device can effectively reduce the risk of liquid back-spraying and improve the uniformity of drug dissolution and the accuracy of dosage.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a tumor care medication dispensing device and its usage method. Background Technology

[0002] In the clinical care of cancer patients, the preparation of chemotherapy drugs is a critical and risky operation. Chemotherapy drugs are usually stored in vials in the form of lyophilized powder. Before use, a specific solvent must be injected into the vial using a syringe to fully dissolve the drug before it can be administered to the patient. This process not only requires precise operation to ensure accurate drug dosage, but also requires strict prevention of drug splashing or aerosol diffusion, because these drugs are often cytotoxic and pose a potential health threat to the operators.

[0003] Medication preparation in oncology care often relies on manual operation by medical staff. During manual operation, medical staff need to hold the syringe and insert the needle into the vial, and then push the piston rod to inject the drug solution. During this process, since the vial was originally under negative pressure or normal pressure, the gas pressure inside the vial increases after the drug solution is injected. When the syringe needle is pulled out of the vial stopper, the high-pressure gas often pushes the drug solution out of the needle hole, forming a "back spray" phenomenon. This phenomenon not only wastes the drug solution, but also increases the risk of skin contact or inhalation of harmful drugs for the operator.

[0004] After injecting the drug solution into the storage bottle containing the lyophilized chemotherapy powder, the drug solution and lyophilized powder in the bottle need to be thoroughly mixed and dissolved. The traditional dissolution method is mostly manual shaking. This method is not only inefficient, but also difficult to control the strength and amplitude of shaking. Too little force may result in insufficient dissolution, while too much force can easily generate a large number of bubbles in the liquid. When the bubbles burst, they may generate aerosols, which also poses a safety hazard. In addition, the liquid may cause cavitation effect due to violently hitting the bottle wall, which may have a potential impact on the active ingredients of the drug. Summary of the Invention

[0005] This invention addresses the core cause of drug backflow, which is the imbalance of positive pressure inside the vial after injection. It designs a pure gas pressure anti-backflow mechanism with self-balancing positive pressure inside the vial, enabling automatic pressure buffering during injection. To address the issues of drug dissolution bubbles and activity degradation, it breaks through the conventional approach of vibration and reciprocating shaking, developing a nutation-type shaking mechanism that combines rotation and conical oscillation. This mechanism achieves efficient dissolution of lyophilized powder through gentle eddies inside the vial. Finally, a limit-switching mechanism seamlessly connects the injection positioning and shaking dissolution working states, resulting in a tumor care drug preparation device and its usage method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tumor care medication dispensing device, comprising:

[0008] Base;

[0009] A support tray is disposed above the base, and the top of the support tray is provided with multiple receiving slots for accommodating liquid storage bottles;

[0010] The mounting plate is welded and fixed to one side of the top of the base;

[0011] The lifting arm is slidably mounted within the mounting plate;

[0012] A clamping mechanism is provided inside the lifting arm for clamping the piston cylinder;

[0013] An injection mechanism, disposed within the mounting plate, is used to inject the liquid medicine in the piston cylinder into the corresponding storage bottle. The injection mechanism includes a sliding groove disposed within the mounting plate and a pressure plate for driving the piston rod of the piston cylinder to descend.

[0014] An anti-backflow mechanism is provided on the outer wall of the piston cylinder to prevent backflow of the medicine when the piston cylinder injects medicine into the storage bottle and the piston cylinder is removed from the storage bottle. The anti-backflow mechanism includes a fixing ring fixed to the outer wall of the piston cylinder and an outer sleeve sleeved on the outer wall of the needle at the bottom end of the piston cylinder.

[0015] A shaking mechanism is provided between the base and the support tray to dissolve the drug solution and chemotherapy lyophilized powder in the storage bottle. The shaking mechanism includes a metal ring fixed to the outer wall of the support tray, a vertical rod provided between the base and the metal ring, and a support mechanism for supporting the support tray.

[0016] In one possible design, the clamping mechanism includes a groove disposed on one end of the lifting arm near the bearing tray. U-shaped plates are fixed to both sides of the top of the lifting arm via vertical plates, and the U-shaped plates are located on both sides of the groove. The two handles of the piston cylinder extend into the slots within the two U-shaped plates respectively. A plurality of elastic balls are fixed to the inner wall of the top of the slots of the U-shaped plates. The elastic balls are used to elastically press against the top of the handles of the piston cylinder to press the handles tightly into the slots of the U-shaped plates.

[0017] In one possible design, the injection mechanism further includes a lead screw rotatably disposed within the slide groove, a first motor fixed to the top of the mounting plate for driving the lead screw to rotate, a lead screw nut fixed within the lifting arm and slidingly engaged with the threaded groove on the lead screw, and a plurality of vertically arranged slide rods I with their top ends sliding through the lifting arm. An electric push rod is fixed to the top of the lifting arm, the top end of the piston rod of the electric push rod is fixedly connected to the bottom of the pressure plate, and a slide rod II is fixed to the top of the lifting arm and slidingly penetrates the pressure plate. The electric push rod cooperates with the pressure plate to compress the piston rod of the piston cylinder, and a distance sensor is fixed to the top of the lifting arm for detecting the distance by which the electric push rod drives the pressure plate to move downward.

[0018] In one possible design, the anti-backflow mechanism further includes an airbag fixed to the top of the fixed ring and sleeved on the outer wall of the piston cylinder, a threaded ring fixedly sleeved on the outer wall of the piston cylinder and located below the fixed ring, and a sealing cover threaded on the outer wall of the threaded ring. A transition cavity is formed between the sealing cover and the threaded ring. The bottom of the airbag is fixedly connected to multiple air guide tubes. The bottom ends of the multiple air guide tubes are fixedly inserted through the threaded ring and extend into the transition cavity. The top end of the outer sleeve is fixedly inserted through the bottom inner wall of the sealing cover. An annular gap is formed between the outer sleeve and the needle of the piston cylinder. The annular gap is connected to the transition cavity. The bottom end of the outer sleeve is located above the bottom end of the needle of the piston cylinder.

[0019] During drug injection, the increased air pressure inside the reservoir bottle enters the air bladder through the annular gap, transition chamber, and air delivery tube, causing the air bladder to inflate and absorb the positive pressure inside the bottle.

[0020] In one possible design, the support mechanism includes a rotating shaft rotatably connected to the top of the base, a hollow sphere fixed to the top of the rotating shaft, multiple ball seats fixed to the bottom of the support tray, a truncated cone fixedly sleeved on the outer wall of the rotating shaft, and multiple elastic support components disposed between the ball seats and the truncated cone. The hollow sphere is rolled within the support tray. The elastic support components include a ball hinge I rolled within the ball seat via a ball socket, a sliding guide rod fixed to one side of the ball hinge I, a ball hinge II rolled within the truncated cone via a ball socket, a fixed sleeve fixed to the side of the ball hinge II away from the truncated cone, and a spring disposed on the inner wall of the sliding guide rod and the fixed sleeve. One end of the sliding guide rod extends slidably into the fixed sleeve.

[0021] In one possible design, the rocking mechanism further includes an L-shaped plate and a fixed rod fixed to the top of the base, a vertical rod sliding through the L-shaped plate, a tension spring fixed between the top of the base and the bottom of the vertical rod, an annular electromagnet fixedly embedded at the top of the vertical rod, a ball bearing rolling on the top of the vertical rod via a ball socket, a slide block slidably connected to the top of the base, and a turntable fixedly sleeved on the outer wall of the rotating shaft. The tension spring is sleeved on the outer wall of the fixed rod, and the top of the fixed rod slides into the vertical rod. The annular electromagnet and the metal ring generate magnetic attraction. The top side of the slide block is rotatably connected to the vertical rod via a connecting rod I. The outer wall of the turntable is provided with multiple arc-shaped grooves and multiple arc-shaped blocks, and the arc-shaped grooves and arc-shaped blocks are arranged alternately.

[0022] One end of the slide moves along the outer circumference of the turntable, the inner wall of the arc groove, and the outer wall of the arc block when the turntable rotates, so as to drive the upright to move up and down reciprocally through the connecting rod I. The upright drives one side of the bearing tray to shift up and down through the magnetic attraction between the annular electromagnet and the metal ring, so that the bearing tray as a whole makes a conical swing.

[0023] In one possible design, a roller is rotatably mounted on one end of the slide near the turntable, and the roller abuts against the outer circumferential wall of the turntable, the inner wall of the arc-shaped groove, and the outer wall of the arc-shaped block.

[0024] In one possible design, a nut seat is rotatably connected to the top of the hollow sphere, a screw rod passes through the nut seat, and the nut seat is threaded onto the outer wall of the screw rod. The bottom end of the screw rod passes through the hollow sphere and slides into the rotating shaft. A positioning ring located inside the hollow sphere is fixedly fitted onto the outer wall of the screw rod. Multiple limiting plates slide through the hollow sphere, and the limiting plates are rotatably connected to the positioning ring via a connecting rod II. The top of the limiting plate mates with a pre-set abutment surface at the bottom of the carrying pallet to limit the movement of the carrying pallet.

[0025] When the positioning ring moves up and down, it drives the limiting plate to extend and retract via connecting rod II, so as to limit or release the load-bearing pallet.

[0026] In one possible design, the top of the limiting plate on the side away from the positioning ring has a slope.

[0027] The entire device features fully automatic anti-backflow protection, requiring minimal manual operation. The shaking dissolution process is gentle and does not damage the drug's activity or generate bubbles. The entire device can simultaneously achieve automatic injection, anti-backflow protection, and gentle dissolution.

[0028] A method of using a tumor care medication dispensing device includes the following steps:

[0029] S1. Rotate the nut seat to move the screw and positioning ring down. The positioning ring pushes the limiting plate outward through the connecting rod II. The top of the limiting plate contacts and fits against the bottom of the carrying tray. Place the liquid storage bottle into the receiving groove on the top of the carrying tray. Place the piston cylinder in the groove of the lifting arm so that its two handles extend into the groove of the U-shaped plate. The elastic ball at the top of the groove of the U-shaped plate presses the top of the handles to fix the piston cylinder.

[0030] S2. The second motor drives the rotating shaft to rotate the carrying tray, moving the liquid storage bottle directly below the piston cylinder. The first motor drives the lead screw to move the lifting arm down along slide bar I. The needle at the bottom of the piston cylinder pierces the bottle cap, and the outer tube pierces the bottle cap and stays above the upper liquid surface inside the bottle. The electric push rod drives the pressure plate down along slide bar II, squeezing the piston rod inside the piston cylinder to inject the medicine into the liquid storage bottle. The gas pressure inside the bottle increases, and the gas enters the air bladder through the bottom of the outer tube, the annular gap, the transition chamber, and the gas guide tube. The air bladder expands to absorb the positive pressure. The distance sensor detects the downward movement distance of the pressure plate. When the preset value is reached, the electric push rod stops. The first motor drives the lead screw in the opposite direction to move the lifting arm up, pulling out the needle and outer tube.

[0031] S3. The reverse drive screw moves the positioning ring upward. The positioning ring pulls the limiting plate back into the hollow sphere through the connecting rod II. The second motor drives the rotating shaft to rotate the hollow sphere. At the same time, the turntable rotates synchronously. Its arc groove and arc block drive the slide to move back and forth. The slide drives the upright to move up and down along the L-shaped plate and the fixed rod through the connecting rod I. The annular electromagnet is energized and generates a magnetic attraction force with the metal ring on the outer wall of the support tray. The ball at the top of the upright contacts the metal ring. The upright moves up and down, pulling the support tray to swing on one side. The hollow sphere at the top of the rotating shaft serves as the support fulcrum at the bottom of the support tray, so that the support tray exhibits nutation motion during rotation.

[0032] S4. The support tray drives the liquid storage bottle to rotate, and the liquid medicine and the freeze-dried powder in the bottle form a liquid vortex to complete the dissolution; in the support mechanism at the bottom of the support tray, multiple sliding guide rods retract and extend in the fixed sleeve under the action of springs, providing resistance to the sway and assisting in restoring balance.

[0033] S5. During the dispensing process, the spring and the tension spring at the bottom of the upright keep all parts stable; after dissolution is complete, the annular electromagnet is de-energized and the storage bottle is removed.

[0034] Beneficial effects: In this invention, by setting up an anti-backflow mechanism, when the piston cylinder injects the drug into the storage bottle, the increased positive pressure inside the bottle drives the airbag to expand, absorbing and balancing the pressure inside the bottle. This effectively avoids the backflow of the drug caused by the high pressure inside the bottle when the needle is pulled out, significantly reducing the risk of operators coming into contact with cytotoxic drugs and improving the safety of tumor nursing drug preparation operations.

[0035] In this invention, a shaking mechanism consisting of a rotating shaft, a hollow sphere, a vertical rod, a turntable, and a support mechanism is set up to drive the carrying tray to generate nutation motion. This motion can form a gentle liquid vortex inside the liquid storage bottle, and use the internal shear force of the fluid to gently dissolve the lyophilized powder. This avoids the violent liquid slapping and harmful bubbles that may be generated by traditional shaking methods, protects the active pharmaceutical ingredients, and improves the uniformity and efficiency of dissolution.

[0036] In this invention, the support mechanism in the shaking mechanism provides flexible support and restoring force when the carrying tray moves through the cooperation of springs, sliding guide rods and fixed sleeves, ensuring the stability and controllability of the nutation motion. At the same time, the setting of the limiting mechanism allows the device to flexibly switch between the two states of injection operation and shaking operation.

[0037] In this invention, the anti-spray mechanism solves the risk of drug splashing during the preparation of chemotherapy drugs by using air pressure guidance and airbag buffering. The shaking mechanism provides a gentle dissolution method for mixing the drug solution and lyophilized powder, avoiding potential damage to the drug by traditional methods. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural schematic diagram of a tumor care medication dispensing device provided by the present invention;

[0039] Figure 2 A three-dimensional exploded view of the lifting arm and mounting plate of a tumor care medication dispensing device provided by the present invention;

[0040] Figure 3 This is a three-dimensional cross-sectional view of the U-shaped plate of a tumor care medication dispensing device provided by the present invention.

[0041] Figure 4 This is a cross-sectional view of the sealing cover and airbag of a tumor care medication dispensing device provided by the present invention.

[0042] Figure 5 This is a three-dimensional exploded structural diagram of the air bladder, threaded ring, and sealing cover of a tumor care medication dispensing device provided by the present invention;

[0043] Figure 6 This is a three-dimensional cross-sectional view of the support tray and hollow sphere of a tumor care medication dispensing device provided by the present invention.

[0044] Figure 7 This is a three-dimensional exploded view of the sliding guide rod and the fixed sleeve of the tumor care medication dispensing device provided by the present invention;

[0045] Figure 8 This is a three-dimensional structural diagram of the turntable, slide, and upright of a tumor care medication dispensing device provided by the present invention;

[0046] Figure 9 This is a three-dimensional exploded view of the turntable and rollers of a tumor care medication dispensing device provided by the present invention;

[0047] Figure 10 This is a cross-sectional view of the support tray and hollow sphere of a tumor care medication dispensing device provided by the present invention.

[0048] In the diagram: 1. Base; 2. Liquid storage bottle; 3. Mounting plate; 4. Slide groove; 5. Lifting arm; 6. Slide rod I; 7. Lead screw; 8. Electric push rod; 9. Pressure plate; 10. Slide rod II; 11. Piston cylinder; 12. Groove; 13. U-shaped plate; 14. Elastic ball; 15. Fixing ring; 16. Airbag; 17. Threaded ring; 18. Air guide tube; 19. Sealing cover; 20. Outer tube; 21. Annular gap; 22. Rotating shaft; 23. Hollow ball; 24. Bearing tray; 25. Receiving groove; 2 6. Frustum; 27. Ball seat; 28. Ball joint I; 29. ​​Sliding guide rod; 30. Fixed sleeve; 31. Spring; 32. Ball joint II; 33. Upright rod; 34. Ring electromagnet; 35. Ball bearing; 36. L-shaped plate; 37. Fixed rod; 38. Tension spring; 39. Slide seat; 40. Connecting rod I; 41. Turntable; 42. Arc groove; 43. Arc block; 44. Roller; 45. Screw; 46. Nut seat; 47. Positioning ring; 48. Limiting plate; 49. Connecting rod II; 50. Metal ring. Detailed Implementation

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0050] In one embodiment: Refer to Figure 1 and Figure 2 A tumor care medication dispensing device, relating to the field of medical device technology, includes a base 1 as the mounting base. A vertically arranged mounting plate 3 is fixedly installed on one side of the top of the base 1 by welding. The mounting plate 3 constitutes the main support frame of the device. A vertically extending groove 4 is opened inside the mounting plate 3. A lifting arm 5 is slidably assembled in the groove 4 and can move up and down along the groove 4.

[0051] Reference Figure 1 and Figure 6A support tray 24 is provided above the base 1. The top end face of the support tray 24 has a plurality of receiving slots 25 arranged in a circumferential array. The size of these receiving slots 25 matches the body of the standard liquid storage bottle 2, and is used to stably accommodate and position the liquid storage bottle 2. The support tray 24 is connected to the base 1 by a shaking mechanism. The shaking mechanism is used to drive the support tray 24 to perform a specific compound movement, so that the drug solution and chemotherapy lyophilized powder in the liquid storage bottle 2 inside it can be gently and fully mixed.

[0052] Reference Figure 2 and Figure 3 The lifting arm 5 is equipped with a clamping mechanism for fixing a piston cylinder 11 pre-filled with liquid medicine. The clamping mechanism includes a groove 12 located at one end of the lifting arm 5 near the support tray 24. A vertical plate is fixed on each of the top two sides of the lifting arm 5, and a U-shaped plate 13 is fixed on each vertical plate. The two U-shaped plates 13 are located on the left and right sides of the groove 12, respectively. The cylinder body of the piston cylinder 11 can be accommodated in the groove 12, and the handles on both sides of the piston cylinder 11 extend into the slots of the two U-shaped plates 13. Multiple elastic balls 14 are fixed on the inner wall of the top of the slot of the U-shaped plate 13. When the handle of the piston cylinder 11 is placed in the slot of the U-shaped plate 13, the elastic balls 14 will deform due to compression, thereby applying a downward pressure to the top of the handle, increasing the friction between the piston cylinder 11 and the U-shaped plate 13, ensuring that the piston cylinder 11 is stably clamped and fixed on the lifting arm 5, and preventing it from loosening or falling off in subsequent operations.

[0053] Reference Figure 2 The injection mechanism inside the mounting plate 3 drives the piston rod of the piston cylinder 11 to press down, thereby completing the injection of the drug solution. The injection mechanism includes the aforementioned slide groove 4 and pressure plate 9. Specifically, a vertically arranged lead screw 7 is rotatably mounted inside the slide groove 4. A first motor is fixed to the top of the mounting plate 3 via a frame. The output shaft of the first motor is connected to the top of the lead screw 7 via a coupling, which drives the lead screw 7 to rotate. A lead screw nut is fixedly installed inside the lifting arm 5. The lead screw nut engages with the threaded groove on the lead screw 7 to form a lead screw nut transmission pair. When the lead screw 7 rotates, the lead screw nut will... The lifting arm 5 moves up and down along the axis of the lead screw 7. In order to increase the stability of the lifting arm 5 during the lifting process and prevent it from bending, multiple vertically arranged slide rods I6 are fixed in the slide groove 4. The top ends of these slide rods I6 slide through the lifting arm 5, providing guidance for the movement of the lifting arm 5. In order to prevent external contaminants from entering the transmission mechanism, a retractable dust cover (not shown in the figure) is provided at the slide groove 4 of the mounting plate 3. One end of the dust cover is fixed to the mounting plate 3 and the other end is fixed to the lifting arm 5. It extends and retracts with the movement of the lifting arm 5, isolating the lead screw 7 and slide rods I6 from the external environment.

[0054] Reference Figure 2 An electric push rod 8 is fixedly installed on the top of the lifting arm 5. The piston rod of the electric push rod 8 extends vertically upward, and the pressure plate 9 is fixedly connected to the top of the piston rod. A slide rod II 10 is also fixed on the top of the lifting arm 5. The top of the slide rod II 10 slides through the pressure plate 9 to provide guidance for the lifting and lowering movement of the pressure plate 9, so that it can move up and down smoothly. In addition, a distance sensor is fixed on the top of the lifting arm 5. The detection end of the distance sensor is aligned with the pressure plate 9 to detect the distance that the electric push rod 8 drives the pressure plate 9 to move down in real time, thereby accurately controlling the injection volume of the medicine.

[0055] Specifically, the operator first places multiple storage bottles 2 containing lyophilized chemotherapy powder into the corresponding receiving slots 25 on the support tray 24. Then, by rotating the support tray 24, the storage bottle 2 to be injected is precisely moved to directly below the piston cylinder 11. Next, the first motor starts, driving the lead screw 7 to rotate, which in turn moves the lifting arm 5 smoothly downward along the slide rod I6 until the needle at the bottom of the piston cylinder 11 pierces the cap of the storage bottle 2 and enters the bottle. After that, the electric push rod 8 starts, and its piston rod drives the pressure plate 9 to move downward. The pressure plate 9 presses down on the piston rod of the piston cylinder 11, causing the piston rod to move downward and inject the medicine in the piston cylinder 11 into the storage bottle 2 through the needle. During this process, the distance sensor monitors the downward distance of the pressure plate 9 in real time. When the displacement value corresponding to the preset injection volume is reached, the electric push rod 8 stops moving, completing a single precise injection.

[0056] Reference Figure 2 , Figure 4 and Figure 5To prevent backflow of medication during the injection process and when the needle is withdrawn from the reservoir 2, this device incorporates an anti-backflow mechanism on the outer wall of the piston cylinder 11. This mechanism includes a fixing ring 15, an air bladder 16, a threaded ring 17, a sealing cover 19, and an outer sleeve 20. The sealing cover 19 is preferably made of medical-grade PP material. The fixing ring 15 is fixedly fitted onto the outer wall of the piston cylinder 11. The bottom of the air bladder 16 is fixed to the top of the fixing ring 15, and the air bladder 16 is entirely fitted onto the outer wall of the piston cylinder 11. The threaded ring 17 is fixedly fitted onto the outer wall of the piston cylinder 11 and is located below the fixing ring 15. The inner wall of the sealing cover 19 has internal threads that connect with the external threads of the threaded ring 17. The threads are screwed together to form a closed transition cavity between the sealing cover 19 and the threaded ring 17. The bottom of the airbag 16 is fixedly connected to multiple air guide tubes 18. The bottom ends of these air guide tubes 18 all extend downward and are fixedly connected to the transition cavity after passing through the threaded ring 17. The top end of the outer sleeve 20 is fixedly connected to the bottom inner wall of the sealing cover 19 and is connected to the transition cavity. The outer sleeve 20 is coaxially sleeved on the outside of the needle of the piston cylinder 11, forming an annular gap 21 between them. The annular gap 21 is connected to the transition cavity. The length of the outer sleeve 20 is shorter than the needle of the piston cylinder 11, that is, the bottom end of the outer sleeve 20 is located above the bottom end of the needle of the piston cylinder 11.

[0057] Specifically, when the lifting arm 5 moves the piston cylinder 11 downwards, the longer piston cylinder 11 needle first pierces into the storage bottle 2 and gradually extends to near the bottom of the bottle. As the lifting arm 5 continues to move downwards, the outer tube 20 will subsequently pierce the bottle cap and enter the storage bottle 2. However, due to its shorter length, its bottom end will remain in the upper space inside the bottle, above the liquid surface. When the pressure plate 9 pushes the piston rod of the piston cylinder 11 downwards to inject the medicine into the bottle, the volume of liquid inside the bottle increases rapidly. The pressure in the bottle space, which was originally occupied by the medicine and air, rises, increasing the pressure... The gas pressure enters the annular gap 21 through the bottom of the outer tube 20 located above the liquid surface, and then passes through the transition chamber and the gas guide tube 18 in sequence, finally entering the air bladder 16. The high-pressure gas causes the air bladder 16 to expand, thereby absorbing the increased positive pressure inside the bottle and releasing the pressure inside the bottle. When the injection is completed, the lifting arm 5 drives the piston cylinder 11 to move upward. When the needle and outer tube 20 are pulled out of the bottle stopper, since the pressure inside the bottle has been restored to a near-normal pressure state by the expansion of the air bladder 16, there will be no phenomenon of the liquid being pushed outward by the high-pressure gas.

[0058] Reference Figure 1 and Figure 6After the drug injection is completed, the drug solution in the storage bottle 2 and the lyophilized chemotherapy powder need to be fully dissolved by a shaking mechanism. The shaking mechanism includes a metal ring 50, a vertical rod 33 and a support mechanism. The metal ring 50 is fixedly sleeved on the outer wall of the carrying tray 24. A rotating shaft 22 is rotatably connected to the top of the base 1. A second motor is fixed inside the base 1 by a frame. The output shaft of the second motor is connected to the bottom end of the rotating shaft 22 to drive the rotating shaft 22 to rotate. A hollow sphere 23 is fixed at the top of the rotating shaft 22. The central area of ​​the carrying tray 24 is provided with a spherical concave surface that matches the outer wall of the hollow sphere 23. The hollow sphere 23 is rolled in the spherical concave surface, so that the carrying tray 24 can swing in all directions with the hollow sphere 23 as the fulcrum.

[0059] Reference Figure 1 , Figure 6 and Figure 8 The rocking mechanism also includes components for driving the support tray 24 to generate nutation motion. An L-shaped plate 36 and a fixed rod 37 are fixed to the top of the base 1. The bottom end of the upright 33 slides through the L-shaped plate 36. The top of the base 1 and the bottom end of the upright 33 are connected by a tension spring 38. The tension spring 38 is sleeved on the outside of the fixed rod 37 to apply a downward pulling force to the upright 33. The top end of the fixed rod 37 slides into the interior of the upright 33 to provide guidance for the up and down movement of the upright 33. A ring electromagnet 34 is fixedly embedded in the top end of the upright 33. When the ring electromagnet 34 is energized, it generates a magnetic attraction force between itself and the metal ring 50. A ball bearing 35 is rolled on the top end of the upright 33 through a ball socket. When the ring electromagnet 34 and the metal ring 50 are attracted, the ball bearing 35 contacts the lower surface of the metal ring 50 to reduce the friction force when the two move relative to each other.

[0060] Reference Figure 1 , Figure 6 , Figure 8 and Figure 9 A slide block 39 is slidably connected to the top of the base 1. The top side of the slide block 39 is rotatably connected to the lower part of the upright 33 through a connecting rod I 40, so that the horizontal reciprocating movement of the slide block 39 can be converted into the vertical movement of the upright 33. A turntable 41 is fixedly sleeved on the outer wall of the rotating shaft 22. Multiple arc grooves 42 are opened on the outer circumference of the turntable 41, and multiple arc blocks 43 are fixed thereon. The arc grooves 42 and arc blocks 43 are arranged alternately along the circumferential direction. A roller 44 is rotatably provided at one end of the slide block 39 near the turntable 41. The roller 44 always keeps in contact with the outer circumference of the turntable 41, the inner wall of the arc groove 42, or the outer wall of the arc block 43.

[0061] Specifically, when the second motor drives the rotating shaft 22 to rotate, the turntable 41 rotates synchronously. Due to the special contours of the arc groove 42 and the arc block 43, as the roller 44 on the slide 39 moves along the surface of the turntable 41, the slide 39 will produce regular reciprocating linear movement as the radius of the turntable 41 changes. The reciprocating motion of the slide 39 drives the upright 33 to move up and down through the connecting rod I 40. The annular electromagnet 34 at the top of the upright 33 is energized and is connected to the metal ring 50 on the support tray 24 through magnetic attraction. Therefore, when the upright 33 moves up and down, it will pull one side of the support tray 24 up and down. While the oscillation occurs, the rotating shaft 22 drives the hollow sphere 23 to rotate. The hollow sphere 23 acts as a fulcrum, driving the entire carrying tray 24 to rotate. The combination of these two movements causes the carrying tray 24 to exhibit a nutation motion trajectory similar to that of a coin about to stop spinning. That is, the carrying tray 24 itself does not rotate around its central axis, but its central axis oscillates in a conical manner around the axis of the rotating shaft 22. This motion mode can generate a gentle and continuous liquid vortex inside the liquid storage bottle 2, using the internal shear force of the fluid to slowly carry the lyophilized powder into the solvent, avoiding the harmful cavitation bubbles that may be generated by the liquid violently hitting the bottle wall.

[0062] Reference Figure 6 and Figure 7 The support mechanism provides support and restoring force when the carrying pallet 24 sways. The support mechanism includes multiple ball seats 27 arranged in a ring, ball hinge I 28, sliding guide rod 29, fixed sleeve 30, spring 31, and ball hinge II 32. Multiple ball seats 27 are fixed to the bottom of the carrying pallet 24, near its edge. Each ball seat 27 has a ball hinge I 28 rolled along its side near the rotating shaft 22 via a ball socket. One end of the ball hinge I 28 is fixedly connected to the sliding guide rod 29. A frustum 26 is fixedly fitted onto the outer wall of the rotating shaft 22. On the conical surface of the frustum 26, corresponding to each ball seat 27, a ball hinge II 32 is rolled along its side via a ball socket. A fixed sleeve 30 is fixed to the side of each ball hinge II 32 away from the frustum 26. One end of the sliding guide rod 29 extends slidably. The sliding guide rod 29 is inserted into the corresponding fixed sleeve 30, and the end of the sliding guide rod 29 is connected to the inner wall of the fixed sleeve 30 by a spring 31. The two ends of the sliding guide rod 29 are fixed to the end of the sliding guide rod 29 and the inner wall of the fixed sleeve 30 by spring seats respectively. This structure forms a support arm. When the carrying tray 24 is in a horizontal state, all the sliding guide rods 29 are in an initial position under the action of the spring 31, providing balanced support for the carrying tray 24. When the carrying tray 24 sways, some of the sliding guide rods 29 will be further pressed into the fixed sleeve 30, compressing the spring 31, while the sliding guide rods 29 on the opposite side will extend more under the elastic force of the spring 31. This combined action can provide a certain resistance to the sway of the carrying tray 24 and help it return to a horizontal state after the external force disappears.

[0063] The device also includes a controller, which is electrically connected to the first motor, the second motor, the electric push rod 8, the distance sensor, and the annular electromagnet 34. The controller is configured to: respond to a start signal, control the second motor to drive the carrying tray 24 to rotate to a preset position; control the first motor to drive the lifting arm 5 to descend to a first preset position; control the electric push rod 8 to drive the pressure plate 9 to move downward and receive feedback signals from the distance sensor, and control the electric push rod 8 to stop when the downward distance reaches a preset threshold; control the first motor to drive the lifting arm 5 to rise and reset; control the second motor to drive the turntable 41 to rotate and control the annular electromagnet 34 to be energized to perform a shaking operation; and control the annular electromagnet 34 to be de-energized after the shaking is completed.

[0064] In another embodiment: Refer to Figure 6 and Figure 10 To facilitate the placement and removal of the liquid storage bottle 2, this device is also equipped with a limiting mechanism. A nut seat 46 is rotatably connected to the top of the hollow sphere 23. A screw 45 passes through the nut seat 46. The nut seat 46 is threaded onto the outer wall of the screw 45. The bottom end of the screw 45 passes through the hollow sphere 23 and slides into the interior of the rotating shaft 22. A positioning ring 47 is fixedly fitted on the outer wall of the screw 45. The positioning ring 47 is located inside the hollow sphere 23. Multiple radially distributed limiting plates 48 slide through the side wall of the hollow sphere 23. Each limiting plate 48 is rotatably connected to the positioning ring 47 by a connecting rod II 49. The top of the limiting plate 48 cooperates with the pre-set abutment surface at the bottom of the carrying tray 24 to limit the carrying tray 24.

[0065] Specifically, when it is necessary to place the liquid storage bottle 2 or perform an injection operation, the operator rotates the nut seat 46, causing the screw 45 and the positioning ring 47 to move downwards. When the positioning ring 47 moves downwards, it pushes the limiting plate 48 outwards through the connecting rod II 49. The top of the limiting plate 48 contacts and fits against the bottom edge of the carrying tray 24, physically limiting the swing range of the carrying tray 24. The top of the side of the limiting plate 48 away from the positioning ring 47 is provided with a slope. This slope can guide the limiting plate 48 when it moves outwards, ensuring that the limiting plate 48... It can smoothly slide into the bottom of the carrying tray 24 without getting stuck; when shaking and dissolving is required, the reverse drive screw 45 and positioning ring 47 move upward. When the positioning ring 47 moves upward, it pulls the limiting plate 48 back into the hollow sphere 23 through the connecting rod II 49, so that the limiting plate 48 is completely retracted into the hollow sphere 23. At this time, the bottom of the carrying tray 24 is not restricted by the limiting plate 48, but it naturally maintains a horizontal state under the action of the support mechanism. Then, it can drive the carrying tray 24 to slide and dissolve the medicine and lyophilized powder.

[0066] A method of using a tumor care medication dispensing device includes the following steps:

[0067] S1. During the preparation stage, the operator rotates the nut seat 46, causing the screw 45 and the positioning ring 47 to move downwards. When the positioning ring 47 moves downwards, it pushes the limiting plate 48 outwards through the connecting rod II 49. The top of the limiting plate 48 contacts and abuts against the bottom edge of the carrying tray 24, physically restricting the carrying tray 24. The top of the limiting plate 48 on the side away from the positioning ring 47 has a slope. The slope guides the limiting plate 48 as it moves outwards, ensuring that the limiting plate 48 can smoothly slide into the bottom of the carrying tray 24 and cooperate with the pre-set abutment surface at the bottom of the carrying tray 24 to avoid jamming. The operator then places multiple containers of lyophilized chemotherapy powder into the storage container. Liquid bottles 2 are placed in the corresponding receiving slots 25 on the top of the carrying tray 24. The size of each receiving slot 25 matches the body of the liquid bottle 2, so that the liquid bottle 2 remains stable during subsequent movement. Then, the operator places the piston cylinder 11 pre-filled with solvent solution into the groove 12 of the lifting arm 5, so that the two handles of the piston cylinder 11 extend into the slots of the two U-shaped plates 13 respectively. Multiple elastic balls 14 fixed on the inner wall of the top of the slot of the U-shaped plate 13 squeeze the top of the handle. The deformation of the elastic balls 14 applies downward pressure to the handle, and the piston cylinder 11 is stably fixed on the lifting arm 5, completing the preparation work before dispensing medicine.

[0068] S2. During the injection stage, the second motor drives the rotating shaft 22 to rotate, which in turn rotates the carrying tray 24, moving the storage bottle 2 containing the injected medication to a position directly below the piston cylinder 11. The first motor starts, driving the lead screw 7 to rotate. The lead screw 7, through the lead screw nut, drives the lifting arm 5 to move downwards along the slide rod I 6. During the descent of the lifting arm 5, the needle at the bottom of the piston cylinder 11 first pierces the cap of the storage bottle 2 and continues to move downwards to near the bottom of the bottle. Subsequently, the outer tube 20 pierces the cap and remains in the upper space inside the bottle. The bottom end of the outer tube 20 is positioned above the liquid surface inside the storage bottle 2. After the lifting arm 5 stops moving, the electric push rod 8 starts. The piston rod of the electric push rod 8 drives the pressure plate 9 to move downwards along the slide rod II 10. The pressure plate 9 presses down on the piston rod of the piston cylinder 11, causing the piston rod to move downwards and inject the medication inside the piston cylinder 11 into the storage bottle 2 through the needle. During the medication injection process, the storage... As the volume of liquid in liquid bottle 2 increases, the air inside the bottle is compressed, and the air pressure rises. The increased air pressure enters the annular gap 21 through the bottom of the outer sleeve 20. The high-pressure gas enters the transition chamber along the annular gap 21, and then enters the air bladder 16 through the air guide tube 18. The air bladder 16 expands under the action of the high-pressure gas, absorbing the increased positive pressure inside the liquid storage bottle 2 and restoring the pressure inside the bottle to a near-normal pressure state. During the downward movement of the piston rod of the electric push rod 8, the distance sensor detects the downward movement distance of the pressure plate 9 in real time. When the downward movement distance of the pressure plate 9 reaches the displacement value corresponding to the preset injection volume, the electric push rod 8 stops moving, completing the injection of the liquid. Subsequently, the first motor drives the lead screw 7 to rotate in the reverse direction, causing the lifting arm 5 to move upward. The needle of the piston cylinder 11 and the outer sleeve 20 are pulled out from the cap of the liquid storage bottle 2. Since the pressure inside the bottle has been released by the expansion of the air bladder 16, there will be no back spraying of the liquid during the needle removal process.

[0069] S3. Before the shaking and dissolving operation, the controller checks whether the limiting plate 48 is in the retracted state (e.g., via a position sensor installed inside the hollow sphere 23, not shown in the figure). If the limiting plate 48 is not fully retracted, the controller issues an alarm and prohibits the shaking mechanism from starting, ensuring operational safety. It then reverses the drive screw 45 and the positioning ring 47 to move upwards. When the positioning ring 47 moves upwards, it pulls the limiting plate 48 back into the hollow sphere 23 via connecting rod II 49, causing the limiting plate 48 to fully retract into the hollow sphere 23. At this time, the supporting support... The bottom of disk 24 is not restricted by the limiting plate 48, but it naturally maintains a horizontal state under the action of the support mechanism. The second motor drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the hollow sphere 23 to rotate. At the same time, the rotating shaft 22 drives the turntable 41 to rotate synchronously. The outer circumference of the turntable 41 is staggered with arc-shaped grooves 42 and arc-shaped blocks 43. The roller 44 at one end of the slide 39 always maintains contact with the outer circumference of the turntable 41, the inner wall of the arc-shaped groove 42, or the outer wall of the arc-shaped block 43. When the turntable 41 rotates, the change in its radius drives the slide 39 to move forward. The slide block 39 moves in a reciprocating linear motion. The reciprocating motion of the slide block 39 drives the upright 33 to move up and down along the L-shaped plate 36 and the fixed rod 37 via the connecting rod I 40. When the annular electromagnet 34 at the top of the upright 33 is energized, a magnetic attraction is generated between the annular electromagnet 34 and the metal ring 50 on the outer wall of the supporting tray 24, causing the supporting tray 24 to tilt. The top of the upright 33 contacts the metal ring 50 via a ball bearing 35, reducing friction during relative movement. When the upright 33 moves up and down, the magnetic attraction pulls the supporting tray 24... The hollow sphere 23, fixed at the top of the rotating shaft 22, is rolled in the spherical concave surface at the bottom of the carrying tray 24, serving as the support fulcrum of the carrying tray 24. The rotation of the rotating shaft 22 causes the carrying tray 24 to rotate as a whole. Under the fulcrum effect of the hollow sphere 23 and the traction effect of the upright 33, the rotational motion of the carrying tray 24 is combined with the up-and-down swinging motion on one side, so that the carrying tray 24 presents the motion trajectory of not rotating on its own and its central axis swinging around the axis of the rotating shaft 22 in this embodiment, that is, nutation motion.

[0070] S4. The support mechanism at the bottom of the carrying tray 24 provides support during movement. When the carrying tray 24 sways, part of the sliding guide rod 29 is pressed into the fixed sleeve 30 and the spring 31 is compressed. The sliding guide rod 29 on the opposite side extends under the elastic force of the spring 31, providing resistance to the sway of the carrying tray 24 and assisting it to restore its balance when the external force changes. The carrying tray 24 drives the liquid storage bottle 2 inside it to perform nutation motion. The drug solution and the lyophilized chemotherapy powder in the liquid storage bottle 2 form a continuous liquid vortex in the bottle. The internal shear force of the fluid gently rolls the lyophilized powder into the solvent, completing the full dissolution of the drug solution and the lyophilized powder.

[0071] S5. Throughout the entire drug preparation process, the spring 31 in the support mechanism continuously provides elastic support force when the carrying tray 24 moves, and the tension spring 38 at the bottom of the upright 33 applies a downward pulling force to the upright 33 to ensure that each moving part remains stable during the movement. After dissolution is completed, the annular electromagnet 34 is de-energized, and the operator removes the liquid storage bottle 2 from the receiving tank 25 to complete all drug preparation operations.

[0072] To ensure the long-term stable operation of the device, regular maintenance is required. Operators should regularly inspect and clean contaminants from the surfaces of moving parts such as the lead screw 7, slide rod I6, and sliding guide rod 29, and add an appropriate amount of lubricant. If necessary, the sealing cover 19 can be unscrewed from the threaded ring 17 for cleaning to ensure the sensitivity of air pressure transmission.

[0073] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric actuator 8 and the annular electromagnet 34 are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0074] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tumor care medication dispensing device, comprising: Base (1); A support tray (24) is provided above the base (1), and the top of the support tray (24) is provided with a plurality of receiving slots (25) for holding the liquid storage bottle (2). Mounting plate (3) is welded and fixed to one side of the top of the base (1); The lifting arm (5) is slidably disposed within the mounting plate (3), characterized in that it further comprises: A clamping mechanism is provided inside the lifting arm (5) for clamping the piston cylinder (11). An injection mechanism is provided in the mounting plate (3) for injecting the liquid medicine in the piston cylinder (11) into the corresponding storage bottle (2). The injection mechanism includes a slide groove (4) provided in the mounting plate (3) and a pressure plate (9) for driving the piston rod of the piston cylinder (11) to descend. An anti-backflow mechanism is provided on the outer wall of the piston cylinder (11) to prevent backflow of the medicine when the piston cylinder (11) is injected into the liquid storage bottle (2). The anti-backflow mechanism includes a fixing ring (15) fixed on the outer wall of the piston cylinder (11) and an outer sleeve (20) sleeved on the outer wall of the needle at the bottom end of the piston cylinder (11). And a shaking mechanism, disposed between the base (1) and the support tray (24), for dissolving the drug solution in the storage bottle (2) with the lyophilized chemotherapy powder. The shaking mechanism includes a metal ring (50) fixed to the outer wall of the support tray (24), a vertical rod (33) disposed between the base (1) and the metal ring (50), and a support mechanism for supporting the support tray (24).

2. The tumor care medication dispensing device according to claim 1, characterized in that, The clamping mechanism includes a groove (12) provided on one end of the lifting arm (5) near the bearing tray (24). U-shaped plates (13) are fixed on both sides of the top of the lifting arm (5) by vertical plates, and the U-shaped plates (13) are located on both sides of the groove (12). The two handles of the piston cylinder (11) extend into the slots of the two U-shaped plates (13) respectively. Multiple elastic balls (14) are fixed on the inner wall of the top of the slot of the U-shaped plate (13). The elastic balls (14) are used to elastically press the top of the handle of the piston cylinder (11) to press the handle into the slot of the U-shaped plate (13).

3. The tumor care medication dispensing device according to claim 2, characterized in that, The injection mechanism also includes a lead screw (7) rotatably disposed in the slide groove (4), a first motor fixed to the top of the mounting plate (3) for driving the lead screw (7) to rotate, a lead screw nut fixed in the lifting arm (5) and cooperating with the threaded groove on the lead screw (7), and a plurality of vertically arranged slide rods I (6) with their top ends sliding through the lifting arm (5). An electric push rod (8) is fixed to the top of the lifting arm (5). The top end of the piston rod of the electric push rod (8) is fixedly connected to the bottom of the pressure plate (9). A slide rod II (10) is fixed to the top of the lifting arm (5) and slides through the pressure plate (9). The electric push rod (8) cooperates with the pressure plate (9) to squeeze the piston rod of the piston cylinder (11). A distance sensor is fixed to the top of the lifting arm (5) for detecting the distance by which the electric push rod (8) drives the pressure plate (9) to move downward.

4. The tumor care medication dispensing device according to claim 3, characterized in that, The anti-backflow mechanism also includes an airbag (16) fixed to the top of the fixed ring (15) and sleeved on the outer wall of the piston cylinder (11), a threaded ring (17) fixedly sleeved on the outer wall of the piston cylinder (11) and located below the fixed ring (15), and a sealing cover (19) threaded on the outer wall of the threaded ring (17). A transition cavity is formed between the sealing cover (19) and the threaded ring (17). The bottom of the airbag (16) is fixedly connected to a plurality of air guide tubes (18). The bottom ends of the plurality of air guide tubes (18) are fixedly penetrated through the threaded ring (17) and extended into the transition cavity. The top end of the outer sleeve (20) is fixedly penetrated through the bottom inner wall of the sealing cover (19). An annular gap (21) is formed between the outer sleeve (20) and the needle of the piston cylinder (11). The annular gap (21) is connected to the transition cavity. The bottom end of the outer sleeve (20) is located above the bottom end of the needle of the piston cylinder (11). When the drug solution is injected, the increased air pressure in the storage bottle (2) enters the air bag (16) through the annular gap (21), the transition chamber and the air guide tube (18), causing the air bag (16) to expand to absorb the positive pressure in the bottle.

5. A tumor care medication dispensing device according to claim 4, characterized in that, The support mechanism includes a rotating shaft (22) rotatably connected to the top of the base (1), a hollow sphere (23) fixed to the top of the rotating shaft (22), a plurality of ball seats (27) fixed to the bottom of the bearing tray (24), a frustum (26) fixedly sleeved on the outer wall of the rotating shaft (22), and a plurality of elastic support components disposed between the ball seats (27) and the frustum (26). The hollow sphere (23) is rolled within the bearing tray (24). The elastic support components include a ball seat (23) rotatably connected to the top of the base (1), a hollow sphere (23) fixed to the top of the base (1), a hollow sphere (23) fixed to the top of the base (22), a hollow sphere (23) rotatably connected to the top of the base (1), a hollow sphere (23) fixedly sleeved on the outer wall of the rotating shaft (22), and a plurality of elastic support components disposed between the ball seats (27) and the frustum (26). The hollow sphere (23) is rolled within the bearing tray (24). The elastic support components include a ball seat (23) rotatably connected to the top of the base (1), a hollow sphere (23) fixed to the top of the base (22), a hollow sphere (23) fixed to the top of the base (24 ...2), a hollow sphere (23) fixed to the top of the base (24), a hollow sphere (23) fixed to the top of the base (22), a hollow sphere (23) fixed to The ball joint I (28) is rolled in the ball seat (27), the sliding guide rod (29) is fixed to one side of the ball joint I (28), the ball joint II (32) is rolled in the truncated cone (26) through the ball joint, the fixed sleeve (30) is fixed to the side of the ball joint II (32) away from the truncated cone (26), and the spring (31) is provided on the inner wall of the sliding guide rod (29) and the fixed sleeve (30). One end of the sliding guide rod (29) slides into the fixed sleeve (30).

6. A tumor care medication dispensing device according to claim 5, characterized in that, The rocking mechanism further includes an L-shaped plate (36) and a fixed rod (37) fixed to the top of the base (1), a vertical rod (33) slidingly passing through the L-shaped plate (36), a tension spring (38) fixed between the top of the base (1) and the bottom of the vertical rod (33), an annular electromagnet (34) fixedly embedded in the top of the vertical rod (33), a ball bearing (35) rolling on the top of the vertical rod (33) through a ball socket, a slide block (39) slidably connected to the top of the base (1), and a fixed sleeve on the outside of the rotating shaft (22). The turntable (41) of the wall, the tension spring (38) is sleeved on the outer wall of the fixed rod (37), the top end of the fixed rod (37) slides to extend into the upright (33), the annular electromagnet (34) and the metal ring (50) generate magnetic attraction force, the top side of the slide (39) is rotatably connected to the upright (33) through the connecting rod I (40), the outer wall of the turntable (41) is provided with multiple arc grooves (42) and multiple arc blocks (43), the arc grooves (42) and the arc blocks (43) are arranged alternately; When the turntable (41) rotates, one end of the slide (39) moves along the outer circumference of the turntable (41), the inner wall of the arc groove (42) and the outer wall of the arc block (43) so as to drive the upright (33) to move up and down through the connecting rod I (40). The upright (33) drives one side of the bearing tray (24) to shift up and down through the magnetic attraction of the annular electromagnet (34) and the metal ring (50), so that the bearing tray (24) as a whole makes a conical swing.

7. A tumor care medication dispensing device according to claim 6, characterized in that, The slide (39) has a roller (44) rotatably mounted on one end near the turntable (41). The roller (44) abuts against the outer circumferential wall of the turntable (41), the inner wall of the arc groove (42), and the outer wall of the arc block (43).

8. A tumor care medication dispensing device according to claim 7, characterized in that, The top of the hollow sphere (23) is rotatably connected to a nut seat (46), and a screw (45) passes through the nut seat (46). The nut seat (46) is threaded onto the outer wall of the screw (45). The bottom end of the screw (45) passes through the hollow sphere (23) and slides into the rotating shaft (22). The outer wall of the screw (45) is fixedly fitted with a positioning ring (47) located inside the hollow sphere (23). Multiple limiting plates (48) slide through the hollow sphere (23). The limiting plates (48) and the positioning ring (47) are rotatably connected by a connecting rod II (49). The top of the limiting plate (48) cooperates with a pre-set abutment surface at the bottom of the carrying tray (24) to limit the carrying tray (24). When the positioning ring (47) moves up and down, it drives the limiting plate (48) to extend and retract through the connecting rod II (49) to limit or release the load-bearing tray (24).

9. A tumor care medication dispensing device according to claim 8, characterized in that, The top of the limiting plate (48) on the side away from the positioning ring (47) is provided with a slope.

10. A method of using a tumor care medication dispensing device, applied to the tumor care medication dispensing device described in claim 9, characterized in that, Includes the following steps: S1. Rotate the nut seat (46) to move the screw (45) and positioning ring (47) down. The positioning ring (47) pushes the limiting plate (48) outward through the connecting rod II (49). The top of the limiting plate (48) contacts and fits against the bottom of the carrying tray (24). Place the liquid storage bottle (2) into the receiving groove (25) on the top of the carrying tray (24). Place the piston cylinder (11) in the groove (12) of the lifting arm (5) so that its two handles extend into the slot of the U-shaped plate (13). The elastic ball (14) at the top of the slot of the U-shaped plate (13) squeezes the top of the handles to fix the piston cylinder (11). S2. The second motor drives the rotating shaft (22) to rotate the carrying tray (24), so that the liquid storage bottle (2) is moved directly below the piston cylinder (11). The first motor drives the lead screw (7) to move the lifting arm (5) down along the slide rod I (6). The needle at the bottom of the piston cylinder (11) pierces the bottle cap, and the outer tube (20) pierces the bottle cap and stays above the upper liquid surface inside the bottle. The electric push rod (8) drives the pressure plate (9) down along the slide rod II (10) to squeeze the piston rod inside the piston cylinder (11) and inject the medicine into the liquid storage bottle (2). The gas pressure inside the bottle increases, and the gas enters the air bag (16) through the bottom of the outer tube (20), the annular gap (21), the transition chamber and the gas guide tube (18). The air bag (16) expands to absorb the positive pressure. The distance sensor detects the distance the pressure plate (9) moves down. When the preset value is reached, the electric push rod (8) stops. The first motor drives the lead screw (7) in the opposite direction to move the lifting arm (5) up and pull out the needle and the outer tube (20). S3. The reverse drive screw (45) moves the positioning ring (47) upward. The positioning ring (47) pulls the limiting plate (48) back into the hollow sphere (23) through the connecting rod II (49). The second motor drives the rotating shaft (22) to rotate the hollow sphere (23). At the same time, the turntable (41) rotates synchronously. Its arc groove (42) and arc block (43) drive the slide (39) to move back and forth. The slide (39) drives the upright (33) along the L-shaped plate (36) through the connecting rod I (40). The rod (37) and the fixed rod (34) move up and down, the annular electromagnet (34) is energized, and a magnetic attraction is generated with the metal ring (50) on the outer wall of the support tray (24). The ball (35) at the top of the upright rod (33) contacts the metal ring (50), and the upright rod (33) moves up and down, pulling the support tray (24) to swing on one side. The hollow ball (23) at the top of the rotating shaft (22) serves as the support fulcrum at the bottom of the support tray (24), so that the support tray (24) exhibits nutation motion during rotation. S4. The support tray (24) drives the liquid storage bottle (2) to rotate, and the liquid in the bottle and the freeze-dried powder form a liquid vortex to complete the dissolution; in the support mechanism at the bottom of the support tray (24), multiple sliding guide rods (29) retract and extend in the fixed sleeve (30) under the action of spring (31), providing resistance to the sway and assisting in restoring balance; S5. During the preparation of the medicine, the spring (31) and the tension spring (38) at the bottom of the upright (33) keep each part stable; after the dissolution is completed, the annular electromagnet (34) is de-energized and the storage bottle (2) is taken out.

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