High-precision solvent liquid preparation system

Abstract

The invention discloses a solvent high-precision liquid preparation system, and relates to the field of medicine preparation and liquid injection equipment, and the technical scheme is that the solvent high-precision liquid preparation system comprises a pre-dissolving unit and a needle inserting and filling unit; the pre-dissolving unit comprises a carrying assembly, a temporary storage table and a liquid supply table; the needle inserting and filling unit comprises a needle inserting assembly and a clamping assembly; the needle inserting assembly comprises a rack and a second needle head, the rack is downwards provided with the second needle head, the second needle head is communicated to the first needle head through a pipeline, and the pipeline winds around a peristaltic pump; the clamping assembly comprises a Z-axis linear module, a lifting frame and a hanging plate. The weight sensors are arranged for detecting the weight and retrograde movement of the liquid medicine during two times of liquid medicine transfer in the pre-dissolving stage and the acupuncture liquid injection stage of the liquid medicine in the medicine bottle, the dosage can be more accurately controlled, the liquid preparation error is reduced, and the high-standard liquid preparation requirement is met.

Description

Technical Field

[0001] The invention relates to the field of medicine dispensing and liquid injection equipment, in particular to a solvent high-precision liquid dispensing system. Background Art

[0002] Intravenous infusion is one of the most common ways to treat patients in medical institutions at all levels in my country; the number of hospitals using intravenous drug preparation centers has increased rapidly, striving to solve the greater occupational risks of medical and health workers who have to prepare large amounts of harmful drugs for a long time. In the realization of drug dispensing automation, during the preparation of drug solutions and solvents, they will flow between containers such as medicine bottles, syringes and solvent bags. If drug residues appear during the circulation process and are not detected in time, the error will result in the accuracy of the liquid preparation not being guaranteed and unable to meet high standards. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a high-precision solvent preparation system. Weight sensors are provided for weight and retrograde detection during the two drug transfers, namely, the pre-dissolution stage of the drug in the medicine bottle and the injection stage. This can more accurately control the amount of medicine, reduce the error of the solution preparation, and meet the high-standard solution preparation requirements.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a high-precision solvent dispensing system, including a pre-dissolving unit and a needle perfusion unit;

[0005] The pre-dissolving unit comprises a transport component, a buffering table and a liquid supply table;

[0006] The transport component is used to shake the medicine bottles and transport them to the buffer station, and to transport the medicine bottles from the buffer station to the liquid supply station;

[0007] The buffer station is provided with a first weight sensor for weighing the medicine bottle, and the liquid supply station is provided with a first needle inserted into the medicine bottle and transported to the outside;

[0008] The needle pricking and perfusion unit comprises a needle pricking assembly and a clamping assembly;

[0009] The needle assembly comprises a frame and a second needle, the frame is provided with the second needle downward, the second needle is connected to the first needle through a pipeline, and the pipeline passes through a peristaltic pump;

[0010] The clamping assembly includes a Z-axis linear module, a lifting frame and a hanging plate;

[0011] The Z-axis linear module is arranged on the frame, and the lifting frame is arranged at the moving end of the Z-axis linear module. The hanging plates are vertically arranged on both sides of the lifting frame respectively, and an upper limit piece and a lower limit piece are relatively arranged on the inner side of the hanging plate. A second weight sensor in contact with both ends of the connecting plate is arranged on the upper side of the lower limit piece, and the second needle head is arranged corresponding to the upper side of the connecting plate.

[0012] When this solution is used, the transport component first clamps the medicine bottle injected with the solvent, then shakes it and transports it to the buffer station, so as to wait for it to be transported to the liquid supply station, and then pierces it with the first needle, and the liquid in the medicine bottle is transported to the second needle through the pipeline;

[0013] The two sides of the lifting frame are respectively lifted up by the two ends of the corresponding connecting plate through the hanging plates, wherein the upper limit piece and the lower limit piece are used to limit the two ends of the connecting plate up and down, so as to lift the connecting plate to connect the solvent bag and move up and down.

[0014] After the two ends of the connecting plate are stuck between the lower limit piece and the upper limit piece, the lifting frame is driven upward by the Z-axis linear module, so that the connecting plate is close to the second needle until the second needle is inserted into the opening of the solvent bag, and the liquid in the pipeline is injected into the solvent bag through the second needle. After the injection is completed, it moves downward through the Z-axis linear module. Due to the existence of the upper limit piece, the connecting plate is away from the second needle, and the second needle is separated from the opening of the solvent bag, completing the injection of the solvent bag.

[0015] When the medicine bottle is on the buffering table, the buffering table is equipped with a first weight sensor, so the medicine bottle after shaking can be weighed, so as to accurately control the weight of the liquid in the medicine bottle and prepare for subsequent filling. Since the first weight sensor is provided on the lower limiter, the connecting plate and the solvent bag can be weighed before and after the liquid is filled, so as to accurately guide the weight of the liquid injected into the solvent bag, and the filling is more accurate.

[0016] Preferably, the transport components are provided with two groups, one of which transports the medicine bottles to the buffering station, and the other transports the medicine bottles from the buffering station to the liquid supply station;

[0017] The handling assembly includes a mechanical arm, a mounting seat and a fixture;

[0018] A flip motor is arranged at the end of the mechanical arm, the mounting seat is arranged at the output end of the flip motor, and the fixture is arranged on the mounting seat.

[0019] The cooperation between the two groups of handling components can significantly improve the efficiency of handling. The clamp is used to clamp the medicine bottle, which is shaken by the mechanical arm and turned over by the flip motor to meet the requirements of different working angles at the buffer table and the liquid supply table.

[0020] Preferably, the clamp comprises a linkage structure and a plurality of clamping structures; each of the clamping structures is clamped and released synchronously through the linkage structure.

[0021] The clamping structure includes a relatively distributed driven jaw and a driving jaw, the rear ends of the driven jaw and the driving jaw are respectively connected to the mounting seat through a rotating shaft, the rear ends of the driven jaw and the driving jaw are respectively provided with mutually meshing arc-shaped racks, the rear end of the driving jaw is provided with a swing arm, and the swing arm is linked to the linkage structure.

[0022] The linkage structure controls multiple clamping structures at the same time, which can significantly improve the clamping efficiency. The driven jaw and the driving jaw cooperate with each other through meshing arc-shaped racks. When the linkage structure drives the driving jaw to move, the driven jaw will also move synchronously, thereby achieving the effect of closing and opening.

[0023] Preferably, the linkage structure comprises a linkage plate, an eccentric wheel and a torsion spring, the linkage plate is slidably matched with the mounting seat, the linkage plate is provided with a pushing side and a force-bearing side, the pushing side and the torsion spring are respectively located on both sides of the swing arm, the torsion spring is provided on the mounting seat, the torsion spring pushes the swing arm to swing toward one side of the pushing side, the mounting seat is provided with a clamping motor, the eccentric wheel is provided at the output end of the clamping motor, the wheel surface of the eccentric wheel abuts against the force-bearing side, and the eccentric wheel pushes the swing arm to swing toward one side of the torsion spring;

[0024] An upper limit plate is arranged above the driven clamping jaw and the driving clamping jaw, and the upper limit plate is fixed to the mounting seat.

[0025] The torsion spring and the eccentric wheel are located on both sides of the swing arm. Therefore, when the eccentric wheel pushes the swing arm, it will overcome the torsion of the torsion spring. When the eccentric wheel does not push the swing arm, the torsion spring will push the swing arm to swing to one side of the eccentric wheel. Therefore, when the eccentric wheel rotates, with the cooperation of the torsion spring, the swing arm is always in contact with the eccentric wheel. Therefore, the swing arm will swing with the eccentric wheel, that is, drive the active clamp and the driven clamp to close and open.

[0026] Preferably, the cache table includes a base and a limiting jig, and the second weight sensor is arranged between the base and the limiting jig; the first needle is fixed upward to the liquid supply table, and the peristaltic pump is located inside the liquid supply table.

[0027] The medicine bottles can be placed in a limited position by a limiting jig so that they can be placed stably on the buffer table.

[0028] Preferably, the frame includes a Y-axis linear module and an X-axis linear module, the Y-axis linear module is provided with a base, the movable end of the Y-axis linear module is provided with an X-axis suspension beam, and the Z-axis linear module is located on the X-axis suspension beam; the second needle is provided at the movable end of the X-axis linear module.

[0029] The Y-axis linear module is used to move the whole in the Y-axis direction so as to increase the moving range of the pillow in the Y-axis and allow more solvent bags to be filled at a time.

[0030] Preferably, the needle puncture assembly includes an X-axis slide bar and a lever;

[0031] The X-axis slide bar slides in cooperation with the lifting frame, the lever is located on the outer side of one of the hanging plates, the middle part of the lever is hinged relative to the hanging plate, the upper end of the lever is linked to one end of the lever, the upper limit member includes a first upper limit member and a second upper limit member, the first upper limit member and the second upper limit member are respectively slid from the outer side of the hanging plates on both sides to the inner side, the first upper limit member is driven to slide by a push member, the outer end of the first upper limit member is linked to the other end of the lever, and the outer end of the second upper limit member is fixed relative to the other end of the X-axis slide bar.

[0032] Since the two ends of the lever are respectively connected to the X-axis slide bar and the first upper limit member, when the lever swings, it can drive the first upper limit member and the second upper limit member to slide at the same time, and they slide towards each other and move closer or farther away at the same time, thereby achieving simultaneous limitation and contact of the two ends of the connecting plate.

[0033] Preferably, the outer end of the first upper limit member is fixed to the first synchronous frame, and a roller is provided on the upper side of the first synchronous frame;

[0034] The pushing member includes a pushing plate and a reset spring, wherein the pushing plate is arranged on the base, and the pushing plate is provided with a guide edge in contact with the rotating roller, and the guide edge includes a vertical edge of an upper section and a beveled edge of a lower section, and the upper side of the beveled edge is closer to the rotating roller than the lower side; the reset spring is arranged between the first synchronous frame and the corresponding hanging plate, and when the lifting frame moves upward and the rotating roller contacts the beveled edge, the beveled edge pushes the first synchronous frame to squeeze the reset spring, and the inner end of the first upper limit member is penetrated through the inner side of the hanging plate.

[0035] The movement of the first upper limit member and the second upper limit member is provided by the pushing member. When the lifting frame is at the lowest position, the rotating roller is below the bevel, and under the action of the return spring, the first upper limit member and the second upper limit member are pushed outward and away, and the connecting plate can be taken out more conveniently at this time; the two ends of the connecting plate are placed behind the lower limit member, and when the lifting frame moves upward, the bevel will push the rotating roller, so that the first upper limit member and the second upper limit member are pushed inward and close to each other, that is, the first upper limit member and the second upper limit member move to above the two ends of the connecting plate. As a result, the connecting plate is limited at the top during the process of being driven upward. After the rotating roller contacts the vertical edge, the needle gradually penetrates into the solvent bag until the lifting frame moves to the uppermost position. After the needle completes the perfusion of the solvent bag,

[0036] Preferably, strip holes are respectively provided at both ends of the lever, and pins penetrating the strip holes are respectively provided at the end of the X-axis slide rod and the first synchronous frame; side limiters are provided on the inner side of the hanging plate corresponding to the front and rear sides of the connecting plate.

[0037] By adopting the matching mode of the strip hole and the pin, on the one hand, the linkage matching of the two can be maintained, and the lever can drive the first upper limit member and the second upper limit member to move; on the other hand, the problem of the position change of the pin matching caused by the swing of the lever can be avoided.

[0038] Preferably, a first guide rod is fixed in parallel to the first upper limit member, and the first guide rod is slidably matched with the corresponding hanging plate;

[0039] A second guide rod is fixed in parallel to the second upper limit member, and the second guide rod is slidably matched with the corresponding hanging plate; a second synchronous frame is arranged at the outer end of the second upper limit member, and the other end of the X-axis slide rod is fixed to the second synchronous frame.

[0040] This facilitates more stable sliding of the first upper limit member and the second upper limit member.

[0041] Beneficial effects of the present invention:

[0042] This solution is able to more accurately control the amount of medicine, reduce the error of liquid preparation, meet high-standard liquid preparation requirements, and automatically perform pre-dissolution and injection, which significantly improves the efficiency and safety of liquid preparation and reduces the labor intensity of staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only 9 of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 is a three-dimensional diagram of a pre-dissolving unit according to an embodiment of the present invention;

[0045] Figure 2 It is a first stereoscopic view of the clamp of the pre-dissolving unit according to an embodiment of the present invention (with a clamping motor);

[0046] Figure 3 A second stereoscopic view of the clamp of the pre-dissolving unit according to an embodiment of the present invention (without the clamping motor);

[0047] Figure 4 A schematic diagram of a buffer station of a pre-dissolving unit according to an embodiment of the present invention;

[0048] Figure 5 This is a first stereoscopic view of the acupuncture perfusion unit according to an embodiment of the present invention (equipped with a solvent bag);

[0049] Figure 6 A second stereoscopic view of the acupuncture perfusion unit according to an embodiment of the present invention (without the solvent bag);

[0050] Figure 7 The third stereoscopic view (back side perspective) of the acupuncture irrigation unit according to the embodiment of the present invention;

[0051] Figure 8 It is a front perspective view of a clamping assembly of an acupuncture irrigation unit according to an embodiment of the present invention;

[0052] Fig. 9 A rear perspective view of a clamping assembly of an acupuncture irrigation unit according to an embodiment of the present invention;

[0053] Among them, 1. Cache table; 2. Liquid supply table; 3. First weight sensor; 4. Robotic arm; 5. Mounting seat; 6. Clamp; 7. Flip motor; 8. Linkage structure; 9. Clamping structure; 10. Driven clamp; 11. Driving clamp; 12. Swing arm; 13. Linkage plate; 14. Eccentric wheel; 15. First needle; 16. Clamping motor; 17. Limiting fixture; 18. Upper limit plate; 19. Base; 20. Medicine bottle; 21. Peristaltic pump; 22. Second needle; 23. Z-axis linear module; 24. Lifting frame; 25. Hanging plate; 26. Roller; 2 7. Lower limit member; 28. Second weight sensor; 29. ​​Connecting plate; 30. Solvent bag; 31. Base; 32. X-axis suspension beam; 33. X-axis slide bar; 34. Lever; 35. First upper limit member; 36. Second upper limit member; 37. First synchronous frame; 38. Second synchronous frame; 39. Push plate; 40. Return spring; 41. Guide edge; 42. Vertical edge; 43. Bevel edge; 44. Strip hole; 45. Pin; 46. Side limit member; 47. First guide rod; 48. Second guide rod; 49. Y-axis linear module; 50. X-axis linear module. DETAILED DESCRIPTION

[0054] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0055] Example

[0056] like Figure 1 As shown, a solvent high-precision liquid preparation system includes a pre-dissolution unit and an acupuncture perfusion unit; the pre-dissolution unit includes a transport component, a buffer table 1 and a liquid supply table 2; the transport component is used to shake the medicine bottle 20 and transport it to the buffer table 1, and to transport the medicine bottle 20 on the buffer table 1 to the liquid supply table 2; the buffer table 1 is provided with a first weight sensor 3 for weighing the medicine bottle 20, and the liquid supply table 2 is provided with a first needle 15 inserted with the medicine bottle 20 and transported to the outside; the acupuncture perfusion unit includes an acupuncture component and a clamping component; the acupuncture component includes a frame and a second needle 22, and the frame is provided with the second needle 22 downward, The second needle 22 is connected to the first needle 15 through a pipeline, and the pipeline passes through the peristaltic pump 21; the clamping assembly includes a Z-axis linear module 23, a lifting frame 24 and a hanging plate 25; the Z-axis linear module 23 is arranged on the frame, and the lifting frame 24 is arranged at the moving end of the Z-axis linear module 23, and the hanging plates 25 are vertically arranged on both sides of the lifting frame 24, and the upper and lower limit members 27 are relatively arranged on the inner side of the hanging plate 25, and the upper side of the lower limit member 27 is provided with a second weight sensor 28 that contacts the two ends of the connecting plate 29, and the second needle 22 is arranged corresponding to the upper side of the connecting plate 29.

[0057] When the present solution is used, the transport component first clamps the medicine bottle 20 injected with the solvent, then shakes it and transports it to the buffer station 1, so as to wait for it to be transported to the liquid supply station 2, and pierces it with the first needle 15, and the liquid in the medicine bottle 20 is transported to the second needle 22 through the pipeline;

[0058] The two sides of the lifting frame 24 are lifted up by the hanging plates 25 corresponding to the two ends of the connecting plate 29, wherein the upper limit member and the lower limit member 27 are used to limit the two ends of the connecting plate 29 up and down, so as to lift the connecting plate 29 to connect with the solvent bag 30 and move up and down.

[0059] After the two ends of the connecting plate 29 are stuck between the lower limit piece 27 and the upper limit piece, the lifting frame 24 is driven upward by the Z-axis linear module 23, so that the connecting plate 29 is close to the second needle 22 until the second needle 22 is inserted into the opening of the solvent bag 30, and the liquid in the pipeline is injected into the solvent bag 30 through the second needle 22. After the injection is completed, it moves downward through the Z-axis linear module 23. Due to the existence of the upper limit piece, the connecting plate 29 is away from the second needle 22, and the second needle 22 is separated from the opening of the solvent bag 30, completing the injection of the solvent bag 30.

[0060] When the medicine bottle 20 is in the buffering table 1, since the buffering table 1 is provided with a first weight sensor 3, the medicine bottle 20 after being shaken can be weighed, so as to accurately control the weight of the liquid in the medicine bottle 20 and provide preparation for subsequent filling. Since the lower limit member 27 is provided with a second weight sensor 28, the connecting plate 29 and the solvent bag 30 can be weighed respectively before and after the liquid is filled, so as to accurately guide the weight of the liquid injected into the solvent bag 30, and the filling is more accurate.

[0061] The transport components are provided with two groups, one of which transports the medicine bottles 20 to the buffer station 1, and the other transports the medicine bottles 20 on the buffer station 1 to the liquid supply station 2;

[0062] The handling assembly includes a mechanical arm 4, a mounting seat 5 and a clamp 6;

[0063] A flip motor 7 is disposed at the end of the mechanical arm 4 , the mounting seat 5 is disposed at the output end of the flip motor 7 , and the fixture 6 is disposed on the mounting seat 5 .

[0064] The two groups of transport components cooperate with each other to significantly improve the efficiency of transport. The clamp 6 is used to clamp the medicine bottle 20, and the mechanical arm 4 is used to shake it. The medicine bottle 20 can be flipped by the flip motor 7 to meet the requirements of different working positions at the buffer station 1 and the liquid supply station 2.

[0065] The clamp 6 includes a linkage structure 8 and a plurality of clamping structures 9 ; each of the clamping structures 9 is clamped and released synchronously through the linkage structure 8 .

[0066] The clamping structure 9 includes a relatively distributed driven jaw 10 and a driving jaw 11, the rear ends of which are connected to the mounting seat 5 via a rotating shaft, and the rear ends of which are respectively provided with mutually meshing arc-shaped racks, and the rear end of the driving jaw 11 is provided with a swing arm 12, which is linked to the linkage structure 8.

[0067] The clamping efficiency can be significantly improved by controlling multiple clamping structures 9 simultaneously through the linkage structure 8. The driven clamping jaw 10 and the driving clamping jaw 11 cooperate through mutually meshing arc-shaped racks. When the linkage structure 8 drives the driving clamping jaw 11 to move, the driven clamping jaw 10 will also move synchronously, thereby achieving the effect of closing and opening.

[0068] The linkage structure 8 includes a linkage plate 13, an eccentric wheel 14 and a torsion spring. The linkage plate 13 is slidably matched with the mounting seat 5. The linkage plate 13 is provided with a pushing side and a force-bearing side. The pushing side and the torsion spring are respectively located on both sides of the swing arm 12. The torsion spring is provided on the mounting seat 5. The torsion spring pushes the swing arm 12 to swing toward one side of the pushing side. The mounting seat 5 is provided with a clamping motor 16. The eccentric wheel 14 is provided at the output end of the clamping motor 16. The wheel surface of the eccentric wheel 14 abuts against the force-bearing side. The eccentric wheel 14 pushes the swing arm 12 to swing toward one side of the torsion spring.

[0069] An upper limit plate 18 is disposed above the driven clamping jaw 10 and the driving clamping jaw 11 , and the upper limit plate 18 is fixed to the mounting seat 5 .

[0070] The torsion spring and the eccentric wheel 14 are located on both sides of the swing arm 12. Therefore, when the eccentric wheel 14 pushes the swing arm 12, the torsion force of the torsion spring will be overcome. When the eccentric wheel 14 does not push the swing arm 12, the torsion spring will push the swing arm 12 to swing to one side of the eccentric wheel 14. Therefore, when the eccentric wheel 14 rotates, the swing arm 12 is always in contact with the eccentric wheel 14 with the cooperation of the torsion spring. Therefore, the swing arm 12 will swing with the eccentric wheel 14, that is, drive the active clamping jaw and the driven clamping jaw 10 to close and open.

[0071] The buffering station 1 includes a base 19 and a limiting jig 17 , and the first weight sensor 3 is arranged between the base 19 and the limiting jig 17 ; the first needle 15 is fixed upward to the liquid supply station 2 , and the peristaltic pump 21 is located inside the liquid supply station 2 .

[0072] The medicine bottle 20 can be limited in position by the limiting jig 17 so that the medicine bottle 20 can be stably placed on the buffer table 1 .

[0073] The frame includes a Y-axis linear module 49 and an X-axis linear module 50. The Y-axis linear module 49 is provided with a base 31. The movable end of the Y-axis linear module 49 is provided with an X-axis suspension beam 32. The Z-axis linear module 23 is located on the X-axis suspension beam 32. The movable end of the X-axis linear module 50 is provided with the second needle 22.

[0074] The Y-axis linear module 49 is used to move the whole in the Y-axis direction so as to increase the moving range of the pillow in the Y-axis and allow more solvent bags 30 to be filled at a time.

[0075] The needle puncture assembly includes an X-axis slide bar 33 and a lever 34;

[0076] The X-axis slide bar 33 slides in cooperation with the lifting frame 24, the lever 34 is located on the outer side of one of the hanging plates 25, the middle part of the lever 34 is hinged relative to the hanging plate 25, the upper end of the lever 34 is linked to one end of the lever 34, the upper limit positioning member includes a first upper limit positioning member 35 and a second upper limit positioning member 36, the first upper limit positioning member 35 and the second upper limit positioning member 36 are respectively slidably penetrated from the outer side of the hanging plate 25 on both sides to the inner side, the first upper limit positioning member 35 is driven to slide by a push member, the outer end of the first upper limit positioning member 35 is linked to the other end of the lever 34, and the outer end of the second upper limit positioning member 36 is fixed relative to the other end of the X-axis slide bar 33.

[0077] Since the two ends of the lever 34 are respectively connected to the X-axis slide bar 33 and the first upper limit member 35, that is, when the lever 34 swings, it can simultaneously drive the first upper limit member 35 and the second upper limit member 36 to slide, and they slide toward each other and move closer or farther away from each other, thereby achieving simultaneous limitation and contact of the two ends of the connecting plate 29.

[0078] The outer end of the first upper limit member 35 is fixed to the first synchronous frame 37, and the upper side of the first synchronous frame 37 is provided with a rotating roller 26;

[0079] The push member includes a push plate 39 and a return spring 40. The push plate 39 is arranged on the base 31. The push plate 39 is provided with a guide edge 41 in contact with the roller 26. The guide edge 41 includes a vertical edge 42 in the upper section and a bevel edge 43 in the lower section. The upper side of the bevel edge 43 is closer to the roller 26 than the lower side. The return spring 40 is arranged between the first synchronous frame 37 and the corresponding hanging plate 25. When the lifting frame 24 moves upward and the roller 26 contacts the bevel edge 43, the bevel edge 43 pushes the first synchronous frame 37 to squeeze the return spring 40. The inner end of the first upper limit member 35 is passed through the inner side of the hanging plate 25.

[0080] The movement of the first upper limit member 35 and the second upper limit member 36 is provided by the pushing member. When the lifting frame 24 is at the lowest point, the roller 26 is below the bevel 43. Under the action of the return spring 40, the first upper limit member 35 and the second upper limit member 36 are pushed outward and away, and the connecting plate can be taken out more conveniently at this time; the two ends of the connecting plate 29 are placed after the lower limit member 27. When the lifting frame 24 moves upward, the bevel 43 will push the roller 26, so that the first upper limit member 35 and the second upper limit member 36 are pushed inward and close, that is, the first upper limit member 35 and the second upper limit member 36 move to above the two ends of the connecting plate 29. As a result, the connecting plate 29 is limited at the top during the process of being driven upward. After the roller 26 contacts the vertical edge 42, the second needle 22 gradually penetrates into the solvent bag 30 until the lifting frame 24 moves to the uppermost position. After the second needle 22 completes the perfusion of the solvent bag 30,

[0081] The two ends of the lever 34 are respectively provided with strip holes 44, and the ends of the X-axis slide rod 33 and the first synchronous frame 37 are respectively provided with pins 45 penetrating the strip holes 44; the inner side of the hanging plate 25 is provided with side limit members 46 corresponding to the front and rear sides of the connecting plate 29.

[0082] By adopting the matching mode of the strip hole 44 and the pin 45, on the one hand, the linkage between the two can be maintained, and the lever 34 can drive the first upper limit member 35 and the second upper limit member 36 to move. On the other hand, the problem of the position change of the pin 45 caused by the swing of the lever 34 can be avoided.

[0083] A first guide rod 47 is fixed in parallel to the first upper limit member 35, and the first guide rod 47 is slidably matched with the corresponding hanging plate 25;

[0084] A second guide rod 48 is fixed in parallel to the second upper limit member 36 , and the second guide rod 48 is slidably matched with the corresponding hanging plate 25 ; a second synchronous frame 38 is provided at the outer end of the second upper limit member 36 , and the other end of the X-axis slide rod 33 is fixed to the second synchronous frame 38 .

[0085] This facilitates more stable sliding of the first upper limit member 35 and the second upper limit member 36 .

[0086] Beneficial effects of the present invention:

[0087] This solution is able to more accurately control the amount of medicine, reduce the error of liquid preparation, meet high-standard liquid preparation requirements, and automatically perform pre-dissolution and injection, thereby significantly improving the efficiency and safety of liquid preparation and reducing the labor intensity of staff.

[0088] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A high-precision solvent dispensing system, characterized in that: It includes a pre-dissolution unit and a needle perfusion unit; The pre-dissolving unit comprises a transport component, a buffering table (1) and a liquid supply table (2); The transport component is used to shake the medicine bottles (20) and transport them to the buffer table (1), and to transport the medicine bottles (20) on the buffer table (1) to the liquid supply table (2); The buffer station (1) is provided with a first weight sensor (3) for weighing the medicine bottle (20), and the liquid supply station (2) is provided with a first needle (15) inserted into the medicine bottle (20) and transported to the outside; The needle pricking and perfusion unit comprises a needle pricking assembly and a clamping assembly; The needle assembly comprises a frame and a second needle (22), the frame being provided with the second needle (22) downwardly, the second needle (22) being connected to the first needle (15) via a pipeline, the pipeline passing through a peristaltic pump (21); The clamping assembly comprises a Z-axis linear module (23), a lifting frame (24) and a hanging plate (25); The Z-axis linear module (23) is arranged on the frame, and the lifting frame (24) is arranged at the moving end of the Z-axis linear module (23). The hanging plates (25) are respectively arranged vertically on both sides of the lifting frame (24). The upper limit member and the lower limit member (27) are arranged relatively on the inner side of the hanging plate (25). The upper side of the lower limit member (27) is provided with a second weight sensor (28) in contact with both ends of the connecting plate (29), and the second needle head (22) is arranged corresponding to the upper side of the connecting plate (29).

2. A solvent high-precision liquid preparation system according to claim 1, characterized in that: The transport components are provided in two groups, one of which transports the medicine bottles (20) to the buffering table (1), and the other transports the medicine bottles (20) on the buffering table (1) to the liquid supply table (2); The handling assembly comprises a mechanical arm (4), a mounting seat (5) and a clamp (6); A flip motor (7) is provided at the end of the mechanical arm (4), the mounting seat (5) is provided at the output end of the flip motor (7), and the fixture (6) is provided on the mounting seat (5).

3. A solvent high-precision liquid preparation system according to claim 2, characterized in that: The clamp (6) comprises a linkage structure (8) and a plurality of clamping structures (9); each of the clamping structures (9) is clamped and released synchronously through the linkage structure (8); The clamping structure (9) comprises a driven clamping jaw (10) and a driving clamping jaw (11) which are relatively distributed. The rear ends of the driven clamping jaw (10) and the driving clamping jaw (11) are respectively connected to the mounting seat (5) via a rotating shaft. The rear ends of the driven clamping jaw (10) and the driving clamping jaw (11) are respectively provided with arc-shaped racks which mesh with each other. The rear end of the driving clamping jaw (11) is provided with a swing arm (12). The swing arm (12) is arranged in linkage with the linkage structure (8).

4. A solvent high-precision liquid preparation system according to claim 3, characterized in that: The linkage structure (8) comprises a linkage plate (13), an eccentric wheel (14) and a torsion spring. The linkage plate (13) is slidably matched with the mounting seat (5). The linkage plate (13) is provided with a pushing side and a force-bearing side. The pushing side and the torsion spring are respectively located on two sides of the swing arm (12). The torsion spring is provided on the mounting seat (5). The torsion spring pushes the swing arm (12) to swing toward one side of the pushing side. The mounting seat (5) is provided with a clamping motor (16). The eccentric wheel (14) is provided at the output end of the clamping motor (16). The wheel surface of the eccentric wheel (14) abuts against the force-bearing side. The eccentric wheel (14) pushes the swing arm (12) to swing toward one side of the torsion spring. An upper limit plate (18) is provided above the driven clamping jaw (10) and the driving clamping jaw (11), and the upper limit plate (18) is fixed to the mounting seat (5).

5. A solvent high-precision liquid preparation system according to claim 1, characterized in that: The buffering table (1) comprises a base (19) and a limiting jig (17), wherein the first weight sensor (3) is arranged between the base (19) and the limiting jig (17); the first needle (15) is fixed upward to the liquid supply table (2), and the peristaltic pump (21) is located inside the liquid supply table (2).

6. A solvent high-precision liquid preparation system according to claim 1, characterized in that: The frame comprises a Y-axis linear module (49) and an X-axis linear module (50); the Y-axis linear module (49) is provided with a base (31); the movable end of the Y-axis linear module (49) is provided with an X-axis suspension beam (32); the Z-axis linear module (23) is located on the X-axis suspension beam (32); and the movable end of the X-axis linear module (50) is provided with the second needle head (22).

7. A solvent high-precision liquid preparation system according to claim 6, characterized in that: The needle-piercing assembly comprises an X-axis slide bar (33) and a lever (34); The X-axis slide bar (33) is slidably matched with the lifting frame (24), the lever (34) is located on the outer side of one of the hanging plates (25), the middle part of the lever (34) is hinged relative to the hanging plate (25), the upper end of the lever (34) is linked to one end of the lever (34), the upper limit member includes a first upper limit member (35) and a second upper limit member (36), the first upper limit member (35) and the second upper limit member (36) are respectively slidably penetrated from the outer side of the hanging plate (25) on both sides to the inner side, the first upper limit member (35) is driven to slide by a push member, the outer end of the first upper limit member (35) is linked to the other end of the lever (34), and the outer end of the second upper limit member (36) is fixed relative to the other end of the X-axis slide bar (33).

8. A solvent high-precision liquid preparation system according to claim 7, characterized in that: The outer end of the first upper limit member (35) is fixed to the first synchronous frame (37), and a rotating roller (26) is arranged on the upper side of the first synchronous frame (37); The push member includes a push plate (39) and a return spring (40). The push plate (39) is arranged on the base (31). The push plate (39) is provided with a guide edge (41) in contact with the roller (26). The guide edge (41) includes a vertical edge (42) in the upper section and a bevel edge (43) in the lower section. The upper side of the bevel edge (43) is closer to the roller (26) than the lower side. The return spring (40) is arranged between the first synchronous frame (37) and the corresponding hanging plate (25). When the lifting frame (24) moves upward and the roller (26) contacts the bevel edge (43), the bevel edge (43) pushes the first synchronous frame (37) to squeeze the return spring (40). The inner end of the first upper limit member (35) is arranged to pass through the inner side of the hanging plate (25).

9. A solvent high-precision liquid preparation system according to claim 8, characterized in that: The two ends of the lever (34) are respectively provided with strip holes (44), and the end of the X-axis slide rod (33) and the first synchronous frame (37) are respectively provided with pins (45) penetrating the strip holes (44); the inner side of the hanging plate (25) is provided with side limit members (46) corresponding to the front and rear sides of the connecting plate (29).

10. A solvent high-precision liquid preparation system according to claim 9, characterized in that: A first guide rod (47) is fixed in parallel to the first upper limit member (35), and the first guide rod (47) is slidably matched with the corresponding hanging plate (25); A second guide rod (48) is fixed in parallel to the second upper limit member (36), and the second guide rod (48) is slidably matched with the corresponding hanging plate (25); a second synchronous frame (38) is provided at the outer end of the second upper limit member (36), and the other end of the X-axis slide rod (33) is fixed to the second synchronous frame (38).

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