Multi-medicine mixed injection device for anesthesiology department
By designing a multi-drug mixing injection device for anesthesiology, the problems of accuracy and convenience of existing infusion pumps when injecting multiple drugs were solved. It enabled flexible combination and independent control of four syringes, improving injection efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-06
- Publication Date
- 2026-03-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing infusion pumps cannot meet the needs when multiple drugs need to be mixed for injection, resulting in problems such as drug leakage and poor injection accuracy.
A multi-drug mixing injection device for anesthesiology is designed. By setting up an extension mechanism, the device can simultaneously inject drugs into four syringes. The device also uses a clamping and pushing mechanism and a pressing and limiting mechanism to fix and control the movement of the syringes, thereby improving injection accuracy and convenience.
It enables efficient mixed injection of multiple drugs, improves injection accuracy and convenience, reduces production costs, and meets the needs of multiple drug injections.
Smart Images
Figure CN121648385A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of anesthetic drug injection technology, and in particular to a device for mixing and injecting multiple drugs in anesthesiology. Background Technology
[0002] When anesthesiologists administer injections, they either inject the drugs directly using a syringe or with the assistance of an infusion pump. When surgery requires the injection of multiple anesthetic drugs, an infusion pump is generally used. An infusion pump is an electromechanical device that can precisely control the delivery speed and dosage of the drug solution in the syringe. It uses a precision stepper motor to drive the piston of the syringe to achieve micro-volume, continuous, and uniform drug infusion.
[0003] Currently, conventional infusion pumps can administer injections from one or two syringes at a time. However, when a large number of medications need to be mixed, traditional infusion pumps cannot meet the demand. Therefore, during surgery, anesthesiologists need to change different syringes on the infusion pump. When changing syringes, anesthesiologists need to remove the original syringe from the infusion pump and disconnect the drug delivery tubing connected to the original syringe. This process not only easily leads to drug leakage, but also when the anesthesiologist reconnects the new syringe to the drug delivery tubing, air can be pushed into the drug delivery tubing, resulting in air bubbles in the drug delivery tubing and affecting the accuracy of drug injection.
[0004] Therefore, in order to enable the infusion pump to meet the needs of mixed injection of multiple drugs, the present invention provides a multi-drug mixed injection device for anesthesiology to meet the needs. Summary of the Invention
[0005] The technical problem this invention aims to solve is to provide a multi-drug mixing injection device for anesthesiology. By setting up an expansion mechanism, this device can simultaneously inject drugs into four syringes. Users can selectively connect the first expansion seat and the second expansion seat to the bottom and back of the main body shell according to actual injection needs. This flexible combination improves the practicality of the device, eliminates the need for users to change syringes, and improves the accuracy and convenience of drug injection. The above settings can solve the problems of low injection efficiency and poor injection accuracy when the infusion pump needs to process multiple drugs at once.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An anesthesiology-grade multi-drug mixing injection device includes a support frame, a main rear shell, and a main front shell. A first mounting seat is fixedly connected to the outer wall of the main rear shell, and a first adjustment knob is screwed onto the first mounting seat. The main rear shell and the support frame are fixed together by the first mounting seat and the first adjustment knob. A baffle is fixedly connected to the inner wall of the support frame. Both the support frame and the baffle have several adjustment holes. Two drive mechanisms are installed inside the support frame. A clamping and pushing mechanism is installed at the end of each drive mechanism. The drive mechanism drives the clamping and pushing mechanism to reciprocate in the horizontal direction. The clamping and pushing mechanism is used to clamp and fix the thumb cap of the syringe piston. The clamping and pushing mechanism consists of a pushing inner shell, a push rod, a pushing outer shell, a clamping mechanism, and a manual adjustment plate. The pushing inner shell and the pushing outer shell are fixed together by screws. The push rod is fixedly connected to the outer wall of the pushing inner shell. The clamping mechanism is installed inside the pushing inner shell and the pushing outer shell. The manual adjustment plate is rotatably connected to the outer wall of the pushing outer shell. A downward limiting mechanism is installed inside the front shell of the main body. A downward pressing rod is slidably connected to the downward limiting mechanism. The downward pressing rod cooperates with the downward limiting mechanism to clamp and limit the syringe barrel. An expansion mechanism is used to increase the number of syringes that the device can process. The expansion mechanism is connected to the support frame and the clamping and pushing mechanism respectively.
[0007] Optionally, the expansion mechanism includes a first expansion seat and a second expansion seat mounted on the support frame. The inner walls of the first expansion seat and the second expansion seat are both fixedly connected with guide cylinders that are adapted to the size of the push rod. The expansion mechanism also includes a first connecting plate and a second connecting plate fixedly connected to the clamping and pushing mechanism.
[0008] Optionally, a housing positioning cylinder is fixedly connected to the inner wall of the propulsion housing, and an inner housing positioning cylinder is fixedly connected to the inner wall of the propulsion inner housing. A first insert rod is fixedly connected to the first connecting plate, and a second insert rod is fixedly connected to the second connecting plate. A locking knob is inserted into both the first insert rod and the second insert rod.
[0009] Optionally, the locking knob is inserted through the outer casing positioning cylinder and extends from the end of the outer casing positioning cylinder and is screwed into the inner casing positioning cylinder.
[0010] Optionally, a mounting bracket is sleeved on the outer wall of the support frame, and a third mounting seat and a second mounting seat are fixedly connected to the top and bottom ends of the mounting bracket, respectively. A third adjustment knob and a second adjustment knob are screwed onto the third mounting seat and the second mounting seat, respectively. The support frame and the mounting bracket are fixed together by the second mounting seat and the third mounting seat.
[0011] Optionally, the first extension base and the support frame are fixed together by the second mounting base and screws, and the second extension base and the support frame are fixed together by the third mounting base and screws.
[0012] Optionally, the mounting bracket, the second mounting base, and the third mounting base are integrally formed.
[0013] Optionally, the main body front shell is provided with two clamping and pushing mechanisms and two pressing rods. The first expansion seat and the second expansion seat are each provided with a clamping and pushing mechanism and a pressing rod. The clamping and pushing mechanism located at the bottom of the main body front shell is connected to the clamping and pushing mechanism located on the first expansion seat through the first connecting plate. The clamping and pushing mechanism located at the top of the main body front shell is connected to the clamping and pushing mechanism located on the second expansion seat through the second connecting plate.
[0014] Optionally, the support frame consists of three parts: a bottom frame, universal self-locking wheels, and a top rod, wherein the universal self-locking wheels are fixedly connected to the bottom of the bottom frame, and the top rod is fixedly connected to the top of the bottom frame.
[0015] Optionally, the main body front shell, the first expansion seat, and the second expansion seat are all provided with grooves for limiting the syringe flange.
[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting up an expansion mechanism, the device can simultaneously inject drugs into four syringes. The four syringes are divided into two groups of two, with each group having the same movement speed and stroke. Each group of syringes can be controlled independently. When multiple drugs need to be mixed for injection, the user can selectively connect the first expansion seat and the second expansion seat to the bottom and back of the main body according to the actual injection needs. This flexible combination improves the practicality of the device, eliminates the need for the user to change syringes, and improves the accuracy and convenience of drug injection. Furthermore, the device increases the number of syringes it can handle without adding a drive source, reducing the production cost and meeting actual production needs. In addition, by setting up the first and second connecting plates, the splicing method of the first and second expansion seats is simpler and more convenient, improving the ease of use of the device. Attached Figure Description
[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.
[0018] Figure 1 A first-person perspective three-dimensional structural diagram of a multi-drug mixing injection device used in anesthesiology. Figure 2 A second-view stereoscopic structural diagram of a multi-drug mixing injection device used in anesthesiology. Figure 3 A third-view stereoscopic diagram of a multi-drug mixing injection device used in anesthesiology. Figure 4 A schematic diagram of the three-dimensional structure of the main body rear shell, main body front shell, and clamping and propulsion mechanism; Figure 5 A three-dimensional structural diagram showing the main body rear shell, main body front shell, and first mounting base in combination; Figure 6 A three-dimensional structural diagram showing the main rear shell, drive mechanism, and clamping and propulsion mechanism working together; Figure 7 A three-dimensional structural diagram showing the main front shell, drive mechanism, and clamping and propulsion mechanism working together; Figure 8 A first-person perspective three-dimensional structural diagram illustrating the coordination between the drive mechanism and the clamping and propulsion mechanism; Figure 9 A second-view three-dimensional structural diagram illustrating the coordination between the drive mechanism and the clamping and propulsion mechanism; Figure 10 Enlarged three-dimensional structural diagram for use with clamping and propulsion mechanism; Figure 11 A schematic diagram of the explosive three-dimensional structure for the clamping and propulsion mechanism and the clamping mechanism in coordination; Figure 12 A magnified three-dimensional structural diagram of the main front shell and the downward pressure limiting mechanism; Figure 13 A three-dimensional structural diagram showing the cooperation between the pressure rod and the pressure limiting mechanism; Figure 14 A schematic diagram of the three-dimensional structure of the main body front shell, main body rear shell and first expansion base; Figure 15 A cross-sectional three-dimensional structural diagram showing the cooperation between the first extension seat and the clamping and propulsion mechanism; Figure 16 for Figure 15 Enlarged 3D structural diagram at point A in the middle; Figure 17 A schematic diagram of the three-dimensional structure for the cooperation of the inner shell, outer shell, and first connecting plate; Figure 18 A three-dimensional structural diagram showing the combination of the first connecting plate, the first insert rod, and the locking knob; Figure 19 A first-view three-dimensional structural diagram showing the main body rear shell, main body front shell, and second extension base in conjunction; Figure 20A schematic diagram of the three-dimensional structure for the cooperation of the inner propulsion shell, the outer propulsion shell, and the second connecting plate; Figure 21 A three-dimensional structural diagram showing the combination of the second connecting plate, the second insert rod, and the locking knob; Figure 22 A schematic diagram of the three-dimensional structure from a second perspective, showing the main body rear shell, main body front shell, and second extension base in conjunction with the main body rear shell and the main body front shell. Figure 23 A three-dimensional structural diagram showing the cooperation between the support frame and the mounting frame; Figure 24 This is an enlarged three-dimensional structural diagram of the mounting bracket.
[0019] Figure label: 1. Support frame; 2. Adjustment hole; 3. Baffle; 4. Main body rear shell; 5. Main body front shell; 6. First mounting base; 7. First adjustment knob; 8. Drive mechanism; 9. Clamping and pushing mechanism; 10. Pushing inner shell; 11. Push rod; 12. Pushing outer shell; 13. Clamping mechanism; 14. Manual adjustment plate; 15. Pressing rod; 16. Pressing limit mechanism; 17. First expansion base; 18. Guide cylinder; 19. First connecting plate; 20. First insertion rod; 21. Locking knob; 22. Outer shell positioning cylinder; 23. Inner shell positioning cylinder; 24. Second expansion base; 25. Second connecting plate; 26. Second insertion rod; 27. Mounting frame; 28. Second mounting base; 29. Second adjustment knob; 30. Third mounting base; 31. Third adjustment knob. Detailed Implementation
[0020] The following is a detailed description of a multi-drug mixing injection device for anesthesiology provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.
[0021] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.
[0022] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.
[0023] like Figures 1 to 13 As shown, an embodiment of the present invention provides a multi-drug mixing injection device for anesthesiology, including a support frame 1, a main body rear shell 4, and a main body front shell 5. The support frame 1 consists of three parts: a bottom frame, a universal self-locking wheel, and a top rod. The universal self-locking wheel is fixedly connected to the bottom of the bottom frame, and the top rod is fixedly connected to the top of the bottom frame. A first mounting seat 6 is fixedly connected to the outer wall of the main body rear shell 4, and a first adjustment knob 7 is screwed onto the first mounting seat 6. The main body rear shell 4 and the support frame 1 are fixedly connected through the first mounting seat 6 and the first adjustment knob 7. A baffle 3 is fixedly connected to the inner wall of the support frame 1, and several adjustment holes 2 are provided on both the support frame 1 and the baffle 3.
[0024] In the above structure, the adjustment hole 2 is opened on the top rod of the support frame 1. The user can insert the first adjustment knob 7 into the adjustment hole 2 on both the support frame 1 and the baffle 3 at the same time, and then fix the main body rear shell 4 on the support frame 1 with the help of the first mounting base 6. Since the support frame 1 is provided with several adjustment holes 2, the user can insert the first adjustment knob 7 into the adjustment holes 2 at different positions to achieve the effect of adjusting the fixed height of the main body rear shell 4. With this setting, the device can be independently fixed on the support frame 1, and the position of the device can be adjusted with the help of the universal self-locking wheel on the support frame 1, making it more convenient for the user to move and adjust the device and improving the convenience of using the device.
[0025] Two drive mechanisms 8 are installed inside the support frame 1. The end of the drive mechanism 8 is equipped with a clamping and pushing mechanism 9. The drive mechanism 8 is used to drive the clamping and pushing mechanism 9 to reciprocate in the horizontal direction. The clamping and pushing mechanism 9 is used to clamp and fix the thumb cap of the syringe piston. The clamping and pushing mechanism 9 is composed of a pushing inner shell 10, a push rod 11, a pushing outer shell 12, a clamping mechanism 13, and a hand adjustment plate 14. The pushing inner shell 10 and the pushing outer shell 12 are fixed together by screws. The push rod 11 is fixedly connected to the outer wall of the pushing inner shell 10. The clamping mechanism 13 is installed inside the pushing inner shell 10 and the pushing outer shell 12. The hand adjustment plate 14 is rotatably connected to the outer wall of the pushing outer shell 12.
[0026] In this technical solution, the drive mechanism 8, the clamping and pushing mechanism 9, and the clamping mechanism 13 are mature existing technologies in the field of syringe pump technology. Therefore, the working principle of the cooperation between the drive mechanism 8, the clamping and pushing mechanism 9, and the clamping mechanism 13 is disclosed as prior art in this application and will not be described in detail here. It is worth mentioning that two drive mechanisms 8 are installed in the front shell 5 of the main body, and each of the two drive mechanisms 8 is equipped with a clamping and pushing mechanism 9. Each drive mechanism 8 can drive the clamping and pushing mechanism 9 to reciprocate in the horizontal direction independently. This setting allows the device to independently drive the two clamping and pushing mechanisms 9 to move at different strokes and speeds, thereby pushing the two syringes to perform drug injection. Moreover, the two independently moving clamping and pushing mechanisms 9 can independently adjust the speed and amount of drug injected by the syringe.
[0027] Furthermore, the user can press the hand adjustment plate 14 to allow the clamping and pushing mechanism 9 to clamp and fix the thumb cap of the syringe piston, so that when the clamping and pushing mechanism 9 moves, it can push the piston of the syringe to move.
[0028] A pressing limiting mechanism 16 is installed inside the front shell 5 of the main body. A pressing rod 15 is slidably connected to the pressing limiting mechanism 16. The pressing rod 15 works with the pressing limiting mechanism 16 to clamp and limit the syringe barrel. The pressing limiting mechanism 16 is used to limit and adjust the pressing height of the pressing rod 15, thereby achieving the effect of fixing the syringe barrel with the pressing rod 15. In this technical solution, the working principle of the working between the pressing rod 15 and the pressing limiting mechanism 16 is a mature prior art in the field of syringe pump technology. It is disclosed as prior art in this application and will not be described in detail here.
[0029] As one implementation method in this embodiment, such as Figures 14 to 22 As shown, the expansion mechanism is used to increase the number of syringes that the device can handle. The expansion mechanism is connected to the support frame 1 and the clamping and pushing mechanism 9 respectively. The expansion mechanism includes a first expansion seat 17 and a second expansion seat 24 mounted on the support frame 1. The main body front shell 5, the first expansion seat 17 and the second expansion seat 24 are all provided with grooves for limiting the syringe flanges. The inner walls of the first expansion seat 17 and the second expansion seat 24 are all fixedly connected with guide cylinders 18 that are adapted to the size of the push rod 11. The expansion mechanism also includes a first expansion seat 18 fixedly connected to the clamping and pushing mechanism 9. A connecting plate 19 and a second connecting plate 25 are provided. The main body front shell 5 is provided with two clamping and pushing mechanisms 9 and two pressing rods 15. The first extension seat 17 and the second extension seat 24 are each provided with a clamping and pushing mechanism 9 and a pressing rod 15. The clamping and pushing mechanism 9 located at the bottom of the main body front shell 5 is connected to the clamping and pushing mechanism 9 located on the first extension seat 17 through the first connecting plate 19. The clamping and pushing mechanism 9 located at the top of the main body front shell 5 is connected to the clamping and pushing mechanism 9 located on the second extension seat 24 through the second connecting plate 25.
[0030] In the above structure, since both the first expansion seat 17 and the second expansion seat 24 are equipped with a clamping and pushing mechanism 9 and a pressing rod 15, and both the first expansion seat 17 and the second expansion seat 24 are equipped with a pressing and limiting mechanism 16 for adjusting and limiting the pressing rod 15, both the first expansion seat 17 and the second expansion seat 24 can achieve the effect of fixing the syringe barrel and the piston thumb cap. The user can insert the flange part of the syringe barrel into the groove on the first expansion seat 17 and the second expansion seat 24, and then clamp and fix the thumb cap of the syringe piston on the clamping and pushing mechanism 9, thereby completing the overall fixing effect of the syringe.
[0031] Furthermore, guide cylinders 18 for limiting push rods 11 are installed in both the first extension base 17 and the second extension base 24. This arrangement allows the clamping and pushing mechanism 9 to slide freely within the first extension base 17 and the second extension base 24 without detachment or shaking during the sliding process.
[0032] Furthermore, since the clamping and pushing mechanism 9 at the bottom of the main body front shell 5 is connected to the clamping and pushing mechanism 9 on the first extension base 17 via the first connecting plate 19, when the clamping and pushing mechanism 9 at the bottom of the main body front shell 5 is driven by the driving mechanism 8, it will simultaneously pull the clamping and pushing mechanism 9 on the first extension base 17. This allows the clamping and pushing mechanism 9 on the first extension base 17 and the clamping and pushing mechanism 9 at the bottom of the main body front shell 5 to move synchronously, with the same speed and stroke. Similarly, since the clamping and pushing mechanism 9 at the top of the main body front shell 5 and the clamping and pushing mechanism 9 on the second extension base 24 are connected via the second connecting plate 25, when the clamping and pushing mechanism 9 at the top of the main body front shell 5 is driven by the driving mechanism 8, it will simultaneously pull the clamping and pushing mechanism 9 on the second extension base 24. The propulsion mechanism 9 moves, and through the upper structure, this device can inject drugs into four syringes. The four syringes are divided into two groups of two, and the movement speed and stroke of each group of syringes are consistent. Each group of syringes can be controlled independently. When multiple drugs need to be mixed for injection, the user can selectively connect the clamping and propulsion mechanisms 9 on the first extension seat 17 and the second extension seat 24 to the clamping and propulsion mechanisms 9 at the bottom and top of the main body front shell 5 according to the actual injection needs. This flexible combination setting improves the practicality of this device, saves the user from changing syringes, improves the accuracy and convenience of drug injection, and increases the number of syringes that the device can handle without adding a drive source, reducing the production cost of the device and meeting actual production needs.
[0033] Optionally, a routine general anesthesia surgery typically involves three to four classes of anesthetic drugs, so the device's ability to process four syringes meets the needs of practical use.
[0034] In this embodiment, as Figures 15 to 21 As shown, a housing positioning cylinder 22 is fixedly connected to the inner wall of the propulsion housing 12, and an inner housing positioning cylinder 23 is fixedly connected to the inner wall of the propulsion inner housing 10. A first insertion rod 20 is fixedly connected to the first connecting plate 19, and a second insertion rod 26 is fixedly connected to the second connecting plate 25. A locking knob 21 is inserted into both the first insertion rod 20 and the second insertion rod 26. The locking knob 21 is inserted through the housing positioning cylinder 22 and extends from the end of the housing positioning cylinder 22 and is screwed into the inner housing positioning cylinder 23.
[0035] As mentioned above, the clamping and pushing mechanism 9 at the bottom of the main body front shell 5 and the clamping and pushing mechanism 9 on the first extension base 17 are connected together by the first connecting plate 19. The clamping and pushing mechanism 9 at the top of the main body front shell 5 and the clamping and pushing mechanism 9 on the second extension base 24 are connected together by the second connecting plate 25. Specifically, the outer circumference of the first insertion rod 20 on the first connecting plate 19 and the second insertion rod 26 on the second connecting plate 25 are adapted to the inner circumference of the outer shell positioning cylinder 22. Therefore, the first insertion rod 20 and the second insertion rod 26 can be inserted into the outer shell positioning cylinder 22. In the actual assembly process, the user can first use the first insertion rod 20 and the second insertion rod 26 to position and insert the first connecting plate 19 and the second connecting plate 25 onto the clamping and pushing mechanism 9. Then, manually turn the locking knob 21 and screw the locking knob 21 into the inner shell positioning cylinder 23 to achieve the fixing effect of the first connecting plate 19 and the second connecting plate 25. This fixing method is not only simple to operate, but also structurally stable.
[0036] In this embodiment, as Figures 22 to 24 As shown, a mounting bracket 27 is sleeved on the outer wall of the support frame 1. The top and bottom ends of the mounting bracket 27 are respectively fixedly connected to a third mounting seat 30 and a second mounting seat 28. A third adjusting knob 31 and a second adjusting knob 29 are respectively screwed onto the third mounting seat 30 and the second mounting seat 28. The support frame 1 and the mounting bracket 27 are fixed together by the second mounting seat 28 and the third mounting seat 30. The first extension seat 17 and the support frame 1 are fixed together by the second mounting seat 28 and screws. The second extension seat 24 and the support frame 1 are fixed together by the third mounting seat 30 and screws. The mounting bracket 27, the second mounting seat 28 and the third mounting seat 30 are integrally formed structures.
[0037] In the above structure, the first extension seat 17 and the second extension seat 24 can be simultaneously fixed on the support frame 1 with the help of the mounting bracket 27. Moreover, the first extension seat 17 and the second extension seat 24 are respectively fixed to the bottom and back of the main body rear shell 4. This centralized fixing method makes it more convenient for the user to connect the drug delivery tube to the syringe.
[0038] The working principle of the technical solution provided by this invention is as follows: In use, the user first inserts the first adjustment knob 7 into the adjustment holes 2 on both the support frame 1 and the baffle 3. Then, the user uses the first mounting base 6 to fix the main body rear shell 4 and the main body front shell 5 onto the support frame 1. Since the support frame 1 has several adjustment holes 2, the user can insert the first adjustment knob 7 into the adjustment holes 2 at different positions to adjust the height of the main body rear shell 4 and the main body front shell 5. After the main body rear shell 4 and the main body front shell 5 are fixed, the user presses the hand adjustment plate 14 to make the clamping and pushing mechanism 9 clamp and fix the thumb cap of the syringe piston. Then, the user presses down the pressing rod 15 to make the pressing rod 15 clamp and fix the syringe barrel, thereby achieving the effect of fixing the syringe.
[0039] When multiple drugs need to be mixed for injection, the user first uses the mounting bracket 27 to simultaneously fix the first expansion seat 17 and the second expansion seat 24 onto the support frame 1. At this time, the first expansion seat 17 and the second expansion seat 24 are located at the bottom and back of the main body rear shell 4, respectively. Then, the syringe is fixed onto the first expansion seat 17 and the second expansion seat 24. Finally, the user first uses the first insertion rod 20 and the second insertion rod 26 to position and insert the first connecting plate 19 and the second connecting plate 25 onto the clamping and pushing mechanism 9. Then, the user manually turns the locking knob 21 and screws the locking knob 21 into the inner shell positioning cylinder 23, thereby achieving the fixing effect of the first connecting plate 19 and the second connecting plate 25. At this time, when the clamping and pushing mechanism 9 at the bottom of the main body front shell 5 is driven by the driving mechanism 8, it will simultaneously pull the first The clamping and pushing mechanism 9 on the extension base 17 moves, so that the clamping and pushing mechanism 9 on the first extension base 17 and the clamping and pushing mechanism 9 at the bottom of the main body front shell 5 can move synchronously, and the speed and stroke of the two movements are the same. Similarly, since the clamping and pushing mechanism 9 at the top of the main body front shell 5 and the clamping and pushing mechanism 9 on the second extension base 24 are connected together by the second connecting plate 25, when the clamping and pushing mechanism 9 at the top of the main body front shell 5 is driven by the driving mechanism 8, it will synchronously pull the clamping and pushing mechanism 9 on the second extension base 24 to move. Through the above structure, this device can perform drug injection processing on four syringes, and the four syringes are divided into two groups of two, and the movement speed and stroke of each group of syringes are the same, and each group of syringes can be controlled independently.
[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A multi-drug mixing injection device for anesthesiology, comprising a support frame, a rear shell of the main body, and a front shell of the main body, characterized in that, A first mounting base is fixedly connected to the outer wall of the main body rear shell. A first adjustment knob is screwed onto the first mounting base. The main body rear shell and the support frame are fixed together by the first mounting base and the first adjustment knob. A baffle is fixedly connected to the inner wall of the support frame. Several adjustment holes are provided on both the support frame and the baffle. Two drive mechanisms are installed inside the support frame. A clamping and pushing mechanism is installed at the end of the drive mechanism. The drive mechanism is used to drive the clamping and pushing mechanism to reciprocate in the horizontal direction. The clamping and pushing mechanism is used to clamp and fix the thumb cap of the syringe piston. The clamping and pushing mechanism consists of a pushing inner shell, a push rod, a pushing outer shell, a clamping mechanism, and a hand adjustment plate. The pushing inner shell and the pushing outer shell are fixed together by screws. The push rod is fixedly connected to the outer wall of the pushing inner shell. The clamping mechanism is installed inside the pushing inner shell and the pushing outer shell. The hand adjustment plate is rotatably connected to the outer wall of the pushing outer shell. A pressure limiting mechanism is installed inside the front shell of the main body. A pressure rod is slidably connected to the pressure limiting mechanism. The pressure rod cooperates with the pressure limiting mechanism to clamp and limit the barrel of the syringe. An expansion mechanism is provided to increase the number of syringes that the device can handle. The expansion mechanism is connected to both the support frame and the clamping and pushing mechanism.
2. The anesthesiology multi-drug mixing injection device according to claim 1, characterized in that, The expansion mechanism includes a first expansion seat and a second expansion seat mounted on the support frame. The inner walls of the first expansion seat and the second expansion seat are fixedly connected with guide cylinders that are adapted to the size of the push rod. The expansion mechanism also includes a first connecting plate and a second connecting plate fixedly connected to the clamping and pushing mechanism.
3. The anesthesiology multi-drug mixing injection device according to claim 2, characterized in that, A housing positioning cylinder is fixedly connected to the inner wall of the propulsion housing, and an inner housing positioning cylinder is fixedly connected to the inner wall of the propulsion inner housing. A first insert rod is fixedly connected to the first connecting plate, and a second insert rod is fixedly connected to the second connecting plate. A locking knob is inserted into both the first insert rod and the second insert rod.
4. The anesthesiology multi-drug mixing injection device according to claim 3, characterized in that, The locking knob is inserted through the outer casing positioning cylinder and extends from the end of the outer casing positioning cylinder and is screwed into the inner casing positioning cylinder.
5. The anesthesiology multi-drug mixing injection device according to claim 2, characterized in that, A mounting bracket is fitted onto the outer wall of the support frame. A third mounting seat and a second mounting seat are fixedly connected to the top and bottom ends of the mounting bracket, respectively. A third adjustment knob and a second adjustment knob are screwed onto the third mounting seat and the second mounting seat, respectively. The support frame and the mounting bracket are fixed together by the second mounting seat and the third mounting seat.
6. The anesthesiology multi-drug mixing injection device according to claim 5, characterized in that, The first extension base and the support frame are fixed together by the second mounting base and screws, and the second extension base and the support frame are fixed together by the third mounting base and screws.
7. The anesthesiology multi-drug mixing injection device according to claim 5, characterized in that, The mounting bracket, the second mounting base, and the third mounting base are integrally formed structures.
8. The anesthesiology multi-drug mixing injection device according to claim 2, characterized in that, The main body front shell is provided with two clamping and pushing mechanisms and two pressing rods. The first expansion base and the second expansion base are each provided with a clamping and pushing mechanism and a pressing rod. The clamping and pushing mechanism located at the bottom of the main body front shell is connected to the clamping and pushing mechanism located on the first expansion base through the first connecting plate. The clamping and pushing mechanism located at the top of the main body front shell is connected to the clamping and pushing mechanism located on the second expansion base through the second connecting plate.
9. The anesthesiology multi-drug mixing injection device according to claim 1, characterized in that, The support frame consists of three parts: a bottom frame, universal self-locking wheels, and a top rod. The universal self-locking wheels are fixedly connected to the bottom of the bottom frame, and the top rod is fixedly connected to the top of the bottom frame.
10. The anesthesiology multi-drug mixing injection device according to claim 2, characterized in that, The main body front shell, the first expansion seat, and the second expansion seat are all provided with grooves for limiting the syringe flange.