Insulin pump dual-channel precision infusion drive device

Abstract

The application discloses an insulin pump double-channel precision infusion driving device, which comprises a base and a cover plate matched with the base, and further comprises two groups of storage barrels for storing insulin, the piston parts of the two groups of storage barrels are connected with the base through sliding assemblies, and the piston parts drive the insulin in the storage barrels when the sliding assemblies work; variable speed assemblies for driving the sliding assemblies to move are arranged in the base, the two groups of variable speed assemblies are connected with the sliding assemblies at corresponding positions respectively, and the variable speed assemblies are connected with the driving motor in the base. Through the design of the electric and manual double-mode driving, the six-gear variable speed adjusting mechanism is combined, the automatic and accurate infusion demand in the daily scene is met, the emergency infusion can be realized through the manual operation when the electric mode fails or there is no power supply, and the reliability and scene adaptability of the equipment use are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of diabetes treatment technology, and more specifically, to a dual-channel precision infusion drive device for insulin pumps. Background Technology

[0002] In the daily treatment of diabetes patients, precise insulin infusion is crucial for stabilizing blood sugar levels. It requires continuous infusion at different rates or on-demand infusion based on the patient's blood sugar fluctuations and dietary needs. Furthermore, it must have emergency infusion capabilities to prevent abnormal blood sugar spikes in case of power outages or malfunctions. In addition, the reliability of the infusion circuit must be ensured during insulin infusion to prevent leakage risks during non-infusion periods, thus ensuring the safety and effectiveness of treatment.

[0003] Most existing insulin pump infusion drive devices employ a single drive mode. While some products offer dual-channel infusion capabilities, they suffer from limitations in speed adjustment and adaptability for emergency operations. Currently common drive solutions rely on a single transmission structure for electric infusion speed switching, making it difficult to balance infusion accuracy and smooth switching. Inaccurate transmission ratio adjustment can lead to infusion speed fluctuations, impacting glycemic control. Furthermore, emergency manual infusion mechanisms are relatively simple, mostly only allowing for fixed-speed manual delivery, unable to adapt to patient needs for variable-speed infusion. The switching process between manual and electric drive is cumbersome and difficult to operate.

[0004] Furthermore, in existing technologies, the on / off control of the fluid circuit and the infusion drive are mostly designed independently, which presents certain problems. When the drive device is not in operation or during switching, the fluid circuit may still be in an open state, posing a risk of insulin leakage. When infusion is started, the synchronization between fluid circuit on / off and speed adjustment is poor, which may lead to infusion delay or instantaneous abnormal flow rate. On the other hand, the two infusion units of some dual-channel drive devices interfere with each other, and coupling effects are easily generated during speed adjustment, resulting in a decrease in the accuracy of single-channel independent control and failing to meet the personalized needs of patients for different infusion routes. Therefore, we urgently need a dual-channel precision infusion drive device for insulin pumps to solve the above problems. Summary of the Invention

[0005] One objective of this invention is to provide a new technical solution for a dual-channel precision infusion drive device for insulin pumps. Through a mechanically coordinated design of dual-mode drive, six-speed transmission, independent dual-channel control, and synchronous on / off of ball valves, it achieves precise and controllable insulin infusion, flexible scenario adaptation, and safe and sealed operation, solving problems such as poor adaptability and unstable infusion in traditional equipment.

[0006] According to a first aspect of the present invention, a dual-channel precision infusion drive device for an insulin pump is provided, comprising a base and a cover plate adapted to the base, and further comprising: two sets of storage containers for storing insulin, wherein the piston portions of both sets of storage containers are connected to the base via sliding components, and when the sliding components are working, they drive the piston portions to push the insulin in the storage containers; a speed-changing component for driving the sliding components to move is provided in the base, wherein the two sets of speed-changing components are respectively connected to the sliding components at corresponding positions, and the base is connected to the speed-changing components via a drive motor, wherein when the drive motor is working, it drives the speed-changing components to transmit the corresponding speed to the sliding components to control the infusion rate of insulin; and manual toggle components are symmetrically arranged in the base, wherein when the manual toggle components are connected to the speed-changing components, a first working area is formed, and when the manual toggle components are disengaged from the speed-changing components, a second working area is formed.

[0007] Optionally, the sliding assembly includes a support frame symmetrically mounted on the bottom wall of the base. The storage bucket is fixedly mounted on the support frame via a bracket. A first lead screw is rotatably connected to the support frame via a bearing seat. A fixing bracket for mounting the piston part is threaded onto the first lead screw. When the first lead screw rotates, the fixing bracket drives the piston part to move along the path of the first lead screw. A first partition and a second partition are fixedly mounted on the bottom wall of the base. The empty rod parts of the two sets of first lead screws are rotatably connected to the first partition. The speed change assembly is located in the speed change zone formed between the first partition and the second partition.

[0008] Optionally, the transmission assembly includes a first transmission rod that rotates symmetrically within the transmission zone. The end of the first transmission rod is connected to the end of a first lead screw. A plurality of first gears are coaxially mounted on the first transmission rod. The plurality of first gears are arranged at intervals along the axial direction of the first transmission rod, and the number of teeth of the first gears is different from each other. The end of the first transmission rod away from the first partition is rotatably connected to a bearing seat on the bottom wall of the base. A first meshing tooth is fixedly installed on the end of the first transmission rod.

[0009] Optionally, a second transmission rod is provided in the speed change zone. One end of the second transmission rod is rotatably connected to the first partition plate, and the other end of the second transmission rod is rotatably connected to the second partition plate. Multiple second gears are loosely fitted on the second transmission rod. The multiple second gears are arranged at intervals along the axial direction of the second transmission rod, and the number of teeth of the second gears is different for each other. The multiple second gears mesh with the first gears at corresponding positions. A third gear is fixedly connected to the second transmission rod and located between two adjacent sets of second gears. A synchronizer that can slide axially is mounted on the multiple sets of third gears. A toothed ring adapted to the synchronizer is fixedly provided on each of the multiple sets of second gears. When the synchronizer meshes with the toothed ring on the corresponding second gear, the second gear rotates with the second transmission rod and forms a power transmission zone. When the synchronizer disengages from the toothed ring on the corresponding second gear, the second gear rotates relative to the second transmission rod and forms an idle zone.

[0010] Optionally, a first transmission tooth is rotatably connected to the second partition plate, the output end of the drive motor is connected to the first transmission tooth, and a second transmission tooth is fixedly installed on each of the two sets of second transmission rods. The two sets of second transmission teeth mesh with the first transmission tooth. When the drive motor drives the first transmission tooth to rotate, the two sets of second transmission teeth and the second transmission rod rotate accordingly.

[0011] Optionally, multiple sets of synchronizers are rotatably connected to actuating rods. Sliding plates adapted to the actuating rods are symmetrically installed on the cover plate. The end of the actuating rod is slidably connected to a groove on the sliding plate. A third partition for adapting the movement of the synchronizer is provided on the sliding plate. Multiple sets of actuating rods are located in the moving area separated by the corresponding third partition. Magnetic suction plates for positioning the actuating rods are symmetrically arranged in the moving area. When in the power transmission area, the actuating rod and the corresponding magnetic suction plate magnetically attract to form a fixed area. When in the idling area, the actuating rod disengages from the magnetic suction plate and abuts against the side wall of the sliding plate through a clamp to form a positioning area.

[0012] Optionally, the manual actuation assembly includes a sliding frame symmetrically mounted on a base. A second lead screw is rotatably connected within the sliding frame. A vertical frame is threaded onto the second lead screw. A second meshing tooth, adapted to the first meshing tooth, is fixedly connected to the vertical frame via a round rod. A first bevel gear is fixedly connected to the other end of the round rod. The optical axis section of the second lead screw extends outward and is fixedly mounted with a first handwheel for rotation. When the first handwheel is rotated, driving the second lead screw to rotate, and the second meshing tooth engages with the first meshing tooth, a transmission zone is formed. When the second meshing tooth disengages from the first meshing tooth, a waiting zone is formed.

[0013] Optionally, the base has symmetrically provided limiting holes, and a moving rod is provided in the limiting hole. The limiting hole consists of a limiting section and a rotating section. The limiting section is located on the inner wall of the base. The inner wall of the limiting section has circumferentially spaced toothed grooves for limiting rotation. A limiting ring adapted to the toothed groove is fixedly installed on the moving rod. A second bevel gear adapted to the first bevel gear is fixedly installed at the end of the moving rod. The other end of the moving rod extends outward and is fixedly installed with a second handwheel for rotation. When in the transmission zone, the second bevel gear meshes with the first bevel gear, and the limiting ring disengages from the toothed groove. When in the waiting zone, the second bevel gear disengages from the first bevel gear, and the limiting ring meshes with the toothed groove.

[0014] Optionally, a ball valve for connecting to the injection pipe is fixedly installed at the output port of the storage tank. A gear ring is fixedly sleeved on the rotating wheel connected to the valve core inside the ball valve. Each of the multiple actuating rods is equipped with a retaining rod. A rack adapted to the gear ring is slidably connected to the base at the output port position, and the end of the rack is connected to the corresponding retaining rod. The rack is symmetrically provided with a meshing area and a neutral area between the two sets of meshing areas. When it is in the fixed area, the corresponding retaining rod pushes the rack out, and the corresponding meshing area meshes with the gear ring and drives the transmission, so that the ball valve and the injection pipe form a passage. When it is in the positioning area, the gear ring is in the neutral area, so that the ball valve and the injection pipe form a disconnection.

[0015] Optionally, the base is symmetrically slidably equipped with shields for covering the first handwheel and the second handwheel.

[0016] 1. According to one embodiment of the present disclosure, the dual-channel precision infusion drive device for insulin pumps adopts a dual-mode drive design of electric and manual, combined with a six-speed variable adjustment mechanism, which not only meets the needs of automated and precise infusion in daily scenarios, but also enables emergency infusion through manual operation when the electric mode fails or there is no power, which significantly improves the reliability and scenario adaptability of the device.

[0017] 2. According to one embodiment of this disclosure, the dual-channel precision infusion drive device for insulin pumps, through two sets of independent speed-changing components, sliding components and control structures, combined with the partition operation of the lever, realizes flexible switching between dual-channel synchronous, asynchronous and single-channel infusion, which can adapt to the medication needs in different treatment scenarios and effectively expand the applicability of the device.

[0018] 3. According to one embodiment of this disclosure, the dual-channel precision infusion drive device for insulin pump achieves synchronous control of gear switching and ball valve on / off by using a lever-linked synchronizer and rack design. At the same time, relying on the sealing structure of the base and cover plate and the airtight replenishment design of the inlet, it not only avoids drug leakage during infusion but also prevents external contaminants from entering the device, thus ensuring the safety and cleanliness of infusion.

[0019] 4. According to one embodiment of this disclosure, the dual-channel precision infusion drive device for insulin pumps, through the coordinated cooperation of mechanical structures such as gear meshing transmission and lead screw propulsion, combined with the magnetic positioning and interlock protection design of the lever, ensures the stability of power transmission, the accuracy of gear switching and the safety of operation, effectively solving the problems of insufficient infusion accuracy, multi-channel interference and cumbersome operation of traditional equipment.

[0020] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0022] Figure 1 This is a first-view overall structural schematic diagram of a dual-channel precision infusion drive device for an insulin pump in one embodiment.

[0023] Figure 2 This is a second-view overall structural schematic diagram of a dual-channel precision infusion drive device for an insulin pump in one embodiment.

[0024] Figure 3 As one embodiment, this is a dual-channel precision infusion drive device for an insulin pump. Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 As one embodiment, this is a dual-channel precision infusion drive device for an insulin pump. Figure 2 Enlarged structural diagram at point B;

[0026] Figure 5 This is a first-view partial structural diagram of a dual-channel precision infusion drive device for an insulin pump in one embodiment.

[0027] Figure 6 As one embodiment, this is a dual-channel precision infusion drive device for an insulin pump. Figure 5 Enlarged structural diagram at point C;

[0028] Figure 7 This is a partial cross-sectional structural diagram of a dual-channel precision infusion drive device for an insulin pump in one embodiment;

[0029] Figure 8 This is a first-view partial cross-sectional structural schematic diagram of a dual-channel precision infusion drive device for an insulin pump in one embodiment.

[0030] Figure 9 As one embodiment, this is a dual-channel precision infusion drive device for an insulin pump. Figure 8Enlarged structural diagram at point D;

[0031] Figure 10 This is a partial cross-sectional view of the second-angle structure of a dual-channel precision infusion drive device for an insulin pump in one embodiment.

[0032] Figure 11 As one embodiment, this is a dual-channel precision infusion drive device for an insulin pump. Figure 10 Enlarged structural diagram at point E;

[0033] Figure 12 This is a second-view partial structural schematic diagram of a dual-channel precision infusion drive device for an insulin pump in one embodiment.

[0034] The diagram shows the following components: 1. Base; 2. Cover plate; 3. Storage tank; 4. Drive motor; 5. Support frame; 6. First lead screw; 7. Fixing frame; 8. First partition; 9. Second partition; 10. First transmission rod; 11. First gear; 12. First meshing gear; 13. Second transmission rod; 14. Second gear; 15. Third gear; 16. Synchronizer; 17. Gear ring; 18. First transmission gear; 19. Second transmission gear; 20. Actuating lever. 21. Sliding plate; 22. Third partition plate; 23. Magnetic suction plate; 24. Clamping plate; 25. Sliding frame; 26. Second lead screw; 27. Stand; 28. Second meshing tooth; 29. ​​First bevel gear; 30. First handwheel; 31. Limiting hole; 32. Moving rod; 33. Gear groove; 34. Limiting ring; 35. Second bevel gear; 36. Second handwheel; 37. Ball valve; 38. Gear ring; 39. Clamping rod; 40. Rack; 41. Baffle plate. Detailed Implementation

[0035] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0036] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0037] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0038] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0039] like Figure 1-12As shown, the dual-channel precision infusion drive device for an insulin pump includes a base 1 and a cover plate 2 that is adapted to the base 1.

[0040] Here, the base 1 and the cover plate 2 adopt a sealed fitting structure, and the two together form a fully enclosed protective cavity, which can completely wrap all internal transmission, speed change and control components, effectively blocking the intrusion of external impurities and protecting the stable operation of the internal structure; the detachable assembly design not only ensures the sealing performance, but also provides convenience for the installation and maintenance of internal components. At the same time, the fitting structure between the cover plate 2 and the base 1 can ensure that all moving parts do not contact each other.

[0041] Furthermore, the inner wall of the cover plate 2 is reserved with dedicated clearance space according to the running trajectory of the internal actuating rod 20, transmission gear and synchronizer 16. After closing, it does not hinder the sliding and rotation of any component. While achieving all-round protection, it ensures smooth operation of the device and solves the problem of easy conflict between the sealing structure and moving parts.

[0042] Furthermore, the base 1 adopts a modular partition layout, separating the sliding component, speed change component, manual component, and on / off component through partitions. Each area works independently without interfering with each other, optimizing space utilization and making the dual-channel drive structure more compact. At the same time, the partition design simplifies the power transmission path, reduces power loss, and improves overall operating efficiency.

[0043] It also includes two sets of storage containers 3 for storing insulin. The pistons of both sets of storage containers 3 are connected to the base 1 through a sliding assembly. When the sliding assembly is working, it drives the piston to push the insulin in the storage container 3.

[0044] The sliding assembly includes a support frame 5 symmetrically mounted on the bottom wall of the base 1. The storage tank 3 is fixedly mounted on the support frame 5 via a bracket. A first lead screw 6 is rotatably connected to the support frame 5 via a bearing seat. A fixing bracket 7 for mounting to the piston part is threaded onto the first lead screw 6. When the first lead screw 6 rotates, the fixing bracket 7 drives the piston part to move along the path of the first lead screw 6. A first partition 8 and a second partition 9 are fixedly mounted on the bottom wall of the base 1. The empty rod parts of the two sets of first lead screws 6 are rotatably connected to the first partition 8. The speed change assembly is located in the speed change zone formed between the first partition 8 and the second partition 9.

[0045] Here, the storage bucket 3 is stably mounted on the support frame 5 by a bracket. The flexible fit design prevents damage to the bucket. The piston part and the fixed frame 7 are in close fit without gaps, ensuring that the piston advances synchronously and smoothly when the sliding component is running, and the insulin is pushed evenly without fluctuations. The support frame 5 provides stable support for the first lead screw 6, ensuring that the rotational motion is accurately converted into linear propulsion motion.

[0046] Furthermore, the first lead screw 6 rotates coaxially through the bearing seat, ensuring smooth and uninterrupted operation. Its threaded transmission with the fixed frame 7 allows for precise control of the piston's displacement, structurally guaranteeing the accuracy of insulin infusion. The first partition 8 and the second partition 9 enclose an independent speed-changing zone, physically isolating the speed-changing component from the sliding component to avoid motion interference and ensure independent and stable power transmission in both channels.

[0047] Furthermore, the sliding component works in conjunction with the speed-changing component and the on / off component. The speed-changing component can achieve six speed settings, which directly drive the sliding component to operate. The on / off component works synchronously to open and close the passage. The three work together to achieve integrated control of infusion speed, pushing action, and passage opening and closing, simplifying the operation process.

[0048] The base 1 is equipped with a speed-changing component for driving the sliding component to move. Two sets of speed-changing components are respectively connected to the sliding component at the corresponding position. The base 1 is connected to the speed-changing component through a drive motor 4. When the drive motor 4 works, it drives the speed-changing component to transmit the corresponding speed to the sliding component to control the insulin infusion rate.

[0049] Here, an integrated design of a single power source driving a dual-speed transmission component using a drive motor 4 is adopted, which simplifies the internal layout, reduces the number of failure points, and ensures that the power sources of the two channels are the same, thus avoiding infusion speed deviation from the source. The drive motor 4 is flexibly connected to the transmission component, which buffers the vibration during operation, prevents the vibration from affecting the infusion accuracy, and extends the service life of the components.

[0050] Furthermore, the speed change component can convert the constant power of the drive motor 4 into six-speed variable power. Through internal gear meshing and switching with synchronizer 16, speed adjustment from 1 to 6 levels can be achieved, which can adapt to the needs of all scenarios such as micro-volume continuous infusion, medium-speed fine-tuning infusion, and rapid large-dose infusion. The two speed change components are independently controlled, which can realize dual-channel synchronous, asynchronous, and single-channel infusion.

[0051] Furthermore, the transmission component and the sliding component are rigidly connected, ensuring lossless and lag-free power transmission. After the drive motor 4 starts, the transmission component can quickly switch to any gear for speed adjustment, and the sliding component synchronously performs the pushing action. At the same time, the transmission component and the on / off component are linked, and the ball valve 37 is automatically controlled to open and close while adjusting the speed, realizing fully automated linkage control.

[0052] The transmission assembly includes a first transmission rod 10 that rotates symmetrically within the transmission zone. The end of the first transmission rod 10 is connected to the end of the first lead screw 6. Multiple first gears 11 are coaxially mounted on the first transmission rod 10. The multiple first gears 11 are arranged at intervals along the axial direction of the first transmission rod 10, and the number of teeth of each first gear 11 is different. The end of the first transmission rod 10 away from the first partition plate 8 is rotatably connected to a bearing seat on the bottom wall of the base 1. A first meshing tooth 12 is fixedly installed on the end of the first transmission rod 10.

[0053] Here, six sets of first gears 11 of different specifications are coaxially arranged on the first transmission rod 10, providing a basic transmission structure for six-speed gear shifting. Different first gears 11 correspond to different transmission speeds, and their axial spacing prevents mutual interference, providing a stable foundation for the shifting of the three sets of synchronizers 16. The first transmission rod 10 is stably supported at both ends, and there is no lateral movement during rotation, ensuring stable power transmission.

[0054] Furthermore, the first transmission rod 10 serves as the core connection between the transmission assembly and the sliding assembly, directly transmitting the power after gear shifting from 1 to 6 to the first lead screw 6, resulting in a simple and efficient power transmission path. The first meshing tooth 12 is integrally formed with the first transmission rod 10, exhibiting high structural strength and stable connection to the manual shifting assembly, enabling seamless switching between electric and manual modes.

[0055] Furthermore, the six sets of first gears 11 mesh with the corresponding second gears 14 to form six independent transmission pairs, which correspond to infusion speeds from 1 to 6. The gear division is clear and the speed change logic is simple. With the sliding switching of synchronizer 16, the speed adjustment of the six gears can be completed quickly to meet different infusion needs.

[0056] A second transmission rod 13 is provided in the transmission zone. One end of the second transmission rod 13 is rotatably connected to the first partition 8, and the other end of the second transmission rod 13 is rotatably connected to the second partition 9. Multiple second gears 14 are loosely fitted on the second transmission rod 13. The multiple second gears 14 are arranged at intervals along the axial direction of the second transmission rod 13, and the number of teeth of the second gears 14 is different for each other. The multiple second gears 14 mesh with the first gears 11 at corresponding positions. A third gear 15 is fixedly connected on the second transmission rod 13 and between two adjacent sets of second gears 14. A synchronizer 16 that can slide axially is mounted on the multiple sets of third gears 15. A toothed ring 17 that is adapted to the synchronizer 16 is fixedly provided on each of the multiple sets of second gears 14. When the synchronizer 16 meshes with the toothed ring 17 on the corresponding second gear 14, the second gear 14 rotates with the second transmission rod 13 and forms a power transmission zone. When the synchronizer 16 disengages from the toothed ring 17 on the corresponding second gear 14, the second gear 14 rotates relative to the second transmission rod 13 and forms an idle zone.

[0057] Here, the six sets of second gears 14, which are loosely fitted on the second transmission rod 13, mesh with the six sets of first gears 11 one by one, forming six independent transmission pairs. The three sets of synchronizers 16 are respectively mounted on the third gear 15 and can slide axially along the second transmission rod 13. By meshing and disengaging with the gear ring 17, the power on and off of the six gears are controlled, thereby realizing gear switching and speed adjustment.

[0058] Furthermore, when the synchronizer 16 slides backward toward the drive motor 4, it sequentially engages the gear ring 17 of the corresponding second gear 14, switching to low-speed to medium-high-speed transmission modes of gear 1, gear 3, and gear 5 respectively; when the synchronizer 16 slides forward toward the ball valve 37, it sequentially engages the gear ring 17 of another set of second gears 14, switching to medium-speed to high-speed transmission modes of gear 2, gear 4, and gear 6 respectively; when engaged, the second gear 14 rotates with the second transmission rod 13 to transmit power, and when disengaged, it rotates freely without affecting power transmission.

[0059] Furthermore, this transmission structure is fully linked with the shift lever 20, the clamping lever 39, and the rack 40. While the shift lever 20 controls the synchronizer 16 to slide and switch any gear, it drives the clamping lever 39 to push the rack 40, thereby controlling the on / off state of the ball valve 37. This achieves the simultaneous completion of the three actions of shifting gears, changing speed, and switching on / off, with no operation delay, improving the convenience and safety of operation.

[0060] The second partition 9 is rotatably connected to the first transmission gear 18. The output end of the drive motor 4 is connected to the first transmission gear 18. The two sets of second transmission rods 13 are fixedly installed with second transmission gears 19. The two sets of second transmission gears 19 mesh with the first transmission gear 18. When the drive motor 4 drives the first transmission gear 18 to rotate, the two sets of second transmission gears 19 and the second transmission rods 13 rotate accordingly.

[0061] Here, the first transmission gear 18 meshes symmetrically with two sets of second transmission gears 19 to form a balanced power distribution structure. The power output by the drive motor 4 can be evenly distributed to the two sets of second transmission rods 13, ensuring that the power input of the two channels is completely consistent and improving the synchronization and stability of the dual-channel infusion.

[0062] Furthermore, the transmission gears are rigidly and precisely meshed, ensuring seamless and lag-free power transmission. Changes in the speed of the drive motor 4 can be transmitted to the transmission components in real time, making the adjustment of infusion speed from level 1 to level 6 more precise. The symmetrical transmission layout supports synchronous infusion at the same level in both channels, as well as independent control of any level in a single channel, making it flexible to use.

[0063] Furthermore, this power transmission structure provides a stable power source for the speed change assembly. No matter which gear the synchronizer 16 switches to, the second transmission rod 13 can rotate continuously and stably, ensuring that the power is not interrupted during the speed change process and that the injection process is continuous and smooth.

[0064] Multiple synchronizers 16 are rotatably connected to actuating rods 20. Sliding plates 21 adapted to the actuating rods 20 are symmetrically installed on the cover plate 2. The end of the actuating rod 20 is slidably connected in the groove on the sliding plate 21. The sliding plate 21 is provided with a third partition 22 for adapting to the movement of the synchronizer 16. Multiple actuating rods 20 are located in the moving area at the corresponding separation of the third partition 22. Magnetic suction plates 23 for positioning the actuating rods 20 are symmetrically arranged in the moving area. When in the power transmission area, the actuating rod 20 and the corresponding magnetic suction plate 23 magnetically attract to form a fixed area. When in the idling area, the actuating rod 20 disengages from the magnetic suction plate 23 and abuts against the side wall of the sliding plate 21 through the clamp 24 to form a positioning area.

[0065] Here, the three sets of levers 20 are the core control components of the six-speed transmission. Pushing the first set of levers 20 backward causes the synchronizer 16 to slide backward to switch to gear 1, and pushing it forward switches to gear 2. Pushing the second set of levers 20 backward switches to gear 3, and pushing it forward switches to gear 4. Pushing the third set of levers 20 backward switches to gear 5, and pushing it forward switches to gear 6. The three sets of levers 20 are operated independently and do not interfere with each other.

[0066] Furthermore, the sliding groove of the sliding plate 21 provides precise guidance for the toggle lever 20, and the third partition 22 separates the moving area to prevent the toggle lever 20 from sliding off course; the magnetic plate 23 and the clamping plate 24 form a dual positioning, and the 1st to 6th working gears are locked by magnetic attraction, while the neutral gear is positioned by elastic clamping to avoid accidental displacement and ensure stable speed change of the six gears.

[0067] Furthermore, the toggle lever 20 is triple-linked with the synchronizer 16 and the clamping lever 39. The moment the toggle lever 20 slides to switch between gears 1 to 6, the synchronizer 16 completes the corresponding gear shift engagement, the clamping lever 39 simultaneously pushes the rack 40 to move, and the ball valve 37 simultaneously opens the passage, realizing integrated linkage of control, six-level speed change, and on / off switching, without the need for additional operation, greatly simplifying the usage process.

[0068] The base 1 is symmetrically equipped with manual toggle components. When the manual toggle components are connected to the gear shifting components, a first working area is formed. When the manual toggle components are disengaged from the gear shifting components, a second working area is formed.

[0069] The manual actuation assembly includes a sliding frame 25 symmetrically mounted on a base 1. A second lead screw 26 is rotatably connected inside the sliding frame 25. A stand 27 is threaded onto the second lead screw 26. A second meshing tooth 28, which is adapted to the first meshing tooth 12, is fixedly connected to the stand 27 via a round rod. A first bevel gear 29 is fixedly connected to the other end of the round rod. The optical axis section of the second lead screw 26 extends outward and is fixedly mounted with a first handwheel 30 for rotation. When the first handwheel 30 is rotated, it drives the second lead screw 26 to rotate. When the second meshing tooth 28 meshes with the first meshing tooth 12, a transmission zone is formed. When the second meshing tooth 28 disengages from the first meshing tooth 12, a waiting zone is formed.

[0070] Here, the manual control component is designed for emergency infusion. Rotating the first handwheel 30 drives the second lead screw 26 to rotate, which in turn drives the upright 27 to move along the sliding frame 25, so that the second meshing tooth 28 engages with the first meshing tooth 12, thus engaging the manual mode and forming a transmission zone with the transmission component; rotating in the opposite direction disengages the manual mode and returns to the electric mode waiting zone.

[0071] Furthermore, in manual mode, the three sets of levers 20 can be used to freely switch between any gear from 1 to 6. The speed change logic is exactly the same as in electric mode. The manual power is transmitted to the speed change component through the meshing teeth, and then drives the sliding component to run. At the same time, the ball valve 37 is turned on and off to ensure the accuracy and safety of manual infusion.

[0072] Furthermore, the threaded transmission between the second lead screw 26 and the support frame 27 can precisely control the engagement position, ensuring a tight and secure engagement without any loosening, and providing lossless manual power transmission. This component is completely independent of the electric component and does not interfere with each other. It can be quickly switched in emergency situations to ensure the normal use of the six-speed manual infusion and guarantee the continuity of treatment.

[0073] A limiting hole 31 is symmetrically provided on the base 1. A moving rod 32 is provided in the limiting hole 31. The limiting hole 31 is composed of a limiting section and a rotating section. The limiting section is located on the inner wall of the base 1. The inner wall of the limiting section is provided with equidistant annular toothed grooves 33 for limiting rotation. A limiting ring 34 adapted to the toothed grooves 33 is fixedly installed on the moving rod 32. A second bevel gear 35 adapted to the first bevel gear 29 is fixedly installed at the end of the moving rod 32. The other end of the moving rod 32 extends outward and is fixedly installed with a second handwheel 36 for rotation. When in the transmission zone, the second bevel gear 35 meshes with the first bevel gear 29 and the limiting ring 34 disengages from the toothed grooves 33. When in the waiting zone, the second bevel gear 35 disengages from the first bevel gear 29 and the limiting ring 34 meshes with the toothed grooves 33. A cover plate 41 for covering the first handwheel 30 and the second handwheel 36 is symmetrically slidable on the base 1.

[0074] Here, in manual mode, pushing the second handwheel 36 causes the moving lever 32 to engage the second bevel gear 35 with the first bevel gear 29, disengaging the limiting ring 34 from the tooth groove 33 and releasing the rotation restriction. Rotating the second handwheel 36 then transmits power. In electric mode, the limiting ring 34 engages with the tooth groove 33, locking the moving lever 32 to prevent accidental operation from disrupting the six-position infusion settings.

[0075] Furthermore, the bevel gear pair converts the rotational power of the second handwheel 36 into transmission power adapted to the transmission component, resulting in smooth and effortless transmission. Combined with the six-speed transmission structure from 1 to 6 gears, it can precisely control the speed of manual infusion. In electric mode, the baffle plate 41 covers the handwheel, strengthening the protection against misoperation and preventing accidental gear switching.

[0076] Furthermore, the manual toggle component is fully linked with the speed change component, sliding component, and on / off component. Turning the second handwheel 36 provides power, and the three toggle levers 20 control the 1 / 2, 3 / 4, and 5 / 6 speed changes respectively. The ball valve 37 is opened and closed synchronously, completely replicating the linkage effect of the electric mode, ensuring the operation logic and stability of manual infusion.

[0077] A ball valve 37 for connecting to the injection pipe is fixedly installed at the output port of the storage tank 3. A gear ring 38 is fixedly sleeved on the rotating wheel connected to the valve core inside the ball valve 37. Each of the multiple actuating levers 20 is equipped with a clamping rod 39. A rack 40 adapted to the gear ring 38 is slidably connected to the output port on the base 1, and the end of the rack 40 is connected to the corresponding clamping rod 39. The rack 40 is symmetrically provided with a meshing area and a neutral area between the two sets of meshing areas. When it is in the fixed area, the corresponding clamping rod 39 pushes the rack 40 out, and the corresponding meshing area meshes with the gear ring 38 and drives the ball valve 37 to form a passage with the injection pipe. When it is in the positioning area, the gear ring 38 is in the neutral area, so that the ball valve 37 and the injection pipe are disconnected.

[0078] Here, the ball valve 37 is switched on and off in full coordination with the toggle lever 20 and the synchronizer 16. When any set of toggle levers 20 is pushed backward to switch to gears 1 / 3 / 5 or forward to switch to gears 2 / 4 / 6, the clamping lever 39 synchronously pushes the rack 40, and the meshing area engages with the gear ring 38, and the ball valve 37 automatically opens. When any toggle lever 20 returns to neutral, the rack 40 resets, and the ball valve 37 automatically closes.

[0079] Furthermore, the meshing area and neutral area of ​​the rack 40 are precisely matched, and the ball valve 37 is only opened at working positions 1 to 6, and completely closed in the neutral state. The on-off control is precise, preventing drug leakage and ensuring clean and safe infusion. The three sets of racks 40 are independently linearly arranged and do not interfere with each other, which is compatible with the independent on-off control of six positions in the dual channel.

[0080] Furthermore, the lever 20 controls gears 1-6, the synchronizer 16 corresponds to the gear shift, the clamping lever 39 moves, the rack 40 moves, the ball valve 37 is switched on and off, and the sliding component is pushed. The entire process is mechanically linked, without electronic dependence, ensuring stable and reliable operation. At the same time, it simplifies operation and improves the user experience of multi-gear infusion.

[0081] In this invention, the electric mode workflow is as follows:

[0082] Initial power output: Start the drive motor 4. The motor output shaft drives the first transmission gear 18 to rotate through the coupling. The first transmission gear 18 simultaneously meshes with two sets of second transmission gears 19, and transmits the power evenly to the second transmission rods 13 on both sides, so that the two sets of second transmission rods 13 rotate synchronously.

[0083] Gear switching and speed adjustment: According to the infusion requirements, operate the lever 20 of the corresponding channel on the cover plate 2. The lever 20 drives the synchronizer 16 to slide axially along the second transmission rod 13, so that the synchronizer 16 meshes with the gear ring 17 on the second gear 14 of the target gear. At this time, the power of the second transmission rod 13 is transmitted to the first gear 11 meshing with it through the meshing second gear 14. Then, the first gear 11 drives the first transmission rod 10 to rotate, realizing the speed transmission of power. If the lever 20 is reset to the middle position, the synchronizer 16 disengages from the gear ring 17 of the second gear 14, and the power transmission is interrupted.

[0084] Infusion execution: After the first transmission rod 10 rotates, it drives the first lead screw 6 connected to it to rotate synchronously. When the first lead screw 6 rotates, it drives the threaded fixed frame 7 to move along the lead screw axis. The fixed frame 7 drives the piston in the storage tank 3 to advance at a constant speed, squeezing out the insulin in the storage tank 3 and completing the infusion action.

[0085] Ball valve 37 on / off control: When the lever 20 switches gears, the connected clamping rod 39 pushes the rack 40 to move along the guide groove in the base 1, so that the rack 40 meshes with the gear ring 38 on the ball valve 37, driving the valve core of the ball valve 37 to rotate, so that the ball valve 37 forms a passage with the injection pipe; when the lever 20 returns to the middle position, the rack 40 returns to the middle position, the gear ring 38 aligns with the neutral area of ​​the rack 40, the ball valve 37 closes, blocking the drug passage, thus realizing synchronous control of gear position and ball valve 37 on / off.

[0086] Dual-channel control: The speed-changing components, sliding components, and manual components of the two channels are arranged independently. By operating the toggle levers 20 of the two channels respectively, dual-channel synchronous infusion, asynchronous infusion, or single-channel infusion can be achieved.

[0087] Manual mode, as a supplement to electric mode, is suitable for emergency scenarios such as electric mode failure or no power. The core power is provided by manually operating the handwheel. The specific procedure is as follows:

[0088] Mode switching and power path construction: First, slide the cover plate 41 to expose the first handwheel 30 and the second handwheel 36; rotate the first handwheel 30 to drive the second lead screw 26 connected to it to rotate, and the stand 27 on the second lead screw 26 moves axially along the sliding frame 25, so that the second meshing tooth 28 on the stand 27 engages with the first meshing tooth 12 on the first transmission rod 10 to form a manual power transmission path; then push the second handwheel 36 to drive the moving rod 32 to move axially, so that the second bevel gear 35 on the moving rod 32 engages with the first bevel gear 29 on the stand 27, and at the same time, the limiting ring 34 on the moving rod 32 disengages from the tooth groove 33 in the limiting hole 31, releasing the rotation restriction of the moving rod 32.

[0089] Manual infusion execution: According to the gear logic of electric mode, operate the corresponding channel to select the target gear by operating the lever 20. The lever 20 drives the synchronizer 16 to mesh with the gear ring 17 of the corresponding second gear 14 to complete the speed adjustment. Rotate the second handwheel 36, and the manual power is transmitted through the path of the second bevel gear 35-the first bevel gear 29-the second meshing tooth 28-the first meshing tooth 12-the first transmission rod 10, and then drives the first lead screw 6 to rotate through the speed change assembly, which drives the piston in the fixed frame 7 and the storage tank 3 to advance, so as to realize insulin infusion.

[0090] Mode Reset: After infusion is completed, pull the second handwheel 36 to disengage the second bevel gear 35 from the first bevel gear 29, and engage the limiting ring 34 with the tooth groove 33 in the limiting hole 31 to lock the rotation of the moving rod 32; rotate the first handwheel 30 in the opposite direction to disengage the second meshing tooth 28 from the first meshing tooth 12 and remove the manual power passage; finally, slide the cover plate 41 to cover the handwheel and restore the equipment to the electric mode.

[0091] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A dual-channel precision infusion drive device for an insulin pump, comprising a base (1) and a cover plate (2) adapted to the base (1), characterized in that: Also includes: Two sets of storage containers (3) for storing insulin. The pistons of both sets of storage containers (3) are connected to the base (1) through a sliding assembly. When the sliding assembly is working, it drives the piston to push the insulin in the storage container (3). The base (1) is provided with a speed-changing component for driving the sliding component to move. The two sets of speed-changing components are respectively connected to the sliding component at the corresponding position. The base (1) is connected to the speed-changing component through a drive motor (4). When the drive motor (4) works, it drives the speed-changing component to transmit the corresponding speed to the sliding component to control the insulin infusion speed. The base (1) is symmetrically provided with manual toggle components. When the manual toggle components are connected to the speed change components, a first working area is formed. When the manual toggle components are disengaged from the speed change components, a second working area is formed.

2. The dual-channel precision infusion drive device for an insulin pump according to claim 1, characterized in that: The sliding assembly includes a support frame (5) symmetrically installed on the bottom wall of the base (1). The storage bucket (3) is fixedly installed on the support frame (5) by a bracket. A first lead screw (6) is rotatably connected to the support frame (5) through a bearing seat. A fixing frame (7) for mounting with the piston is threaded onto the first lead screw (6). When the first lead screw (6) rotates, the fixing frame (7) drives the piston to move along the path of the first lead screw (6). A first partition (8) and a second partition (9) are fixedly installed on the bottom wall of the base (1). The empty rods of the two sets of first lead screws (6) are rotatably connected to the first partition (8). The speed change assembly is located in the speed change zone formed between the first partition (8) and the second partition (9).

3. The dual-channel precision infusion drive device for an insulin pump according to claim 2, characterized in that: The speed change assembly includes a first transmission rod (10) that rotates symmetrically within the speed change zone. The end of the first transmission rod (10) is connected to the end of the first lead screw (6). Multiple first gears (11) are coaxially mounted on the first transmission rod (10). The multiple first gears (11) are arranged at intervals along the axial direction of the first transmission rod (10), and the number of teeth of the first gears (11) is different from each other. The end of the first transmission rod (10) away from the first partition (8) is rotatably connected to a bearing seat on the bottom wall of the base (1). The end of the first transmission rod (10) is fixedly mounted with a first meshing tooth (12).

4. The dual-channel precision infusion drive device for an insulin pump according to claim 3, characterized in that: A second transmission rod (13) is provided in the speed change zone. One end of the second transmission rod (13) is rotatably connected to the first partition plate (8), and the other end of the second transmission rod (13) is rotatably connected to the second partition plate (9). A plurality of second gears (14) are loosely fitted on the second transmission rod (13). The plurality of second gears (14) are arranged at intervals along the axial direction of the second transmission rod (13), and the number of teeth of the second gears (14) is different from each other. The plurality of second gears (14) mesh with the first gears (11) at corresponding positions. The second transmission rod (13) is located on two adjacent sets of second gears. A third gear (15) is fixedly connected between (14). A synchronizer (16) that can slide axially is mounted on multiple sets of the third gears (15). A gear ring (17) that is adapted to the synchronizer (16) is fixedly installed on multiple sets of the second gears (14). When the synchronizer (16) meshes with the gear ring (17) on the corresponding second gear (14), the second gear (14) rotates with the second transmission rod (13) and forms a power transmission zone. When the synchronizer (16) disengages from the gear ring (17) on the corresponding second gear (14), the second gear (14) rotates relative to the second transmission rod (13) and forms an idle zone.

5. The dual-channel precision infusion drive device for an insulin pump according to claim 4, characterized in that: The second partition (9) is rotatably connected to the first transmission gear (18), and the output end of the drive motor (4) is connected to the first transmission gear (18). The two sets of second transmission rods (13) are fixedly installed with second transmission gears (19). The two sets of second transmission gears (19) mesh with the first transmission gears (18). When the drive motor (4) drives the first transmission gears (18) to rotate, the two sets of second transmission gears (19) and the second transmission rods (13) rotate accordingly.

6. The dual-channel precision infusion drive device for an insulin pump according to claim 5, characterized in that: Multiple sets of synchronizers (16) are rotatably connected to actuating rods (20). Sliding plates (21) adapted to the actuating rods (20) are symmetrically installed on the cover plate (2). The end of the actuating rod (20) is slidably connected to the groove on the sliding plate (21). The sliding plate (21) is provided with a third partition (22) for adapting to the movement of the synchronizer (16). Multiple sets of actuating rods (20) are located in the moving area separated by the corresponding third partition (22). Magnetic suction plates (23) for positioning the actuating rods (20) are symmetrically arranged in the moving area. When in the power transmission area, the actuating rod (20) and the corresponding magnetic suction plate (23) magnetically attract to form a fixed area. When in the idle area, the actuating rod (20) and the magnetic suction plate (23) separate and abut against the side wall of the sliding plate (21) through the clamp (24) to form a positioning area.

7. The dual-channel precision infusion drive device for an insulin pump according to claim 6, characterized in that: The manual actuation assembly includes a sliding frame (25) symmetrically mounted on a base (1). A second lead screw (26) is rotatably connected inside the sliding frame (25). A stand (27) is threaded onto the second lead screw (26). A second meshing tooth (28) adapted to the first meshing tooth (12) is fixedly connected to the stand (27) via a round rod. A first bevel gear (29) is fixedly connected to the other end of the round rod. The optical axis section of the second lead screw (26) extends outward and is fixedly mounted with a first handwheel (30) for rotation. When the first handwheel (30) is rotated and the second lead screw (26) is driven to rotate, and the second meshing tooth (28) meshes with the first meshing tooth (12), a transmission zone is formed. When the second meshing tooth (28) disengages from the first meshing tooth (12), a waiting zone is formed.

8. The dual-channel precision infusion drive device for an insulin pump according to claim 7, characterized in that: The base (1) is symmetrically provided with limiting holes (31), and a moving rod (32) is provided in the limiting hole (31). The limiting hole (31) is composed of a limiting section and a rotating section. The limiting section is located on the inner wall of the base (1). The inner wall of the limiting section is provided with equidistant annular toothed grooves (33) for limiting rotation. A limiting ring (34) adapted to the toothed grooves (33) is fixedly installed on the moving rod (32). The end of the moving rod (32) is fixedly installed with... There is a second bevel gear (35) that is adapted to the first bevel gear (29). The other end of the moving rod (32) extends outward and is fixedly mounted with a second handwheel (36) for rotation. When in the transmission zone, the second bevel gear (35) meshes with the first bevel gear (29) and the limiting ring (34) disengages from the tooth groove (33). When in the waiting zone, the second bevel gear (35) disengages from the first bevel gear (29) and the limiting ring (34) meshes with the tooth groove (33).

9. The dual-channel precision infusion drive device for an insulin pump according to claim 8, characterized in that: The output port of the storage tank (3) is fixedly equipped with a ball valve (37) for connecting the injection pipe. A gear ring (38) is fixedly sleeved on the rotating wheel connected to the valve core inside the ball valve (37). Each of the multiple actuating rods (20) is equipped with a clamping rod (39). A rack (40) adapted to the gear ring (38) is slidably connected to the output port on the base (1). The end of the rack (40) is connected to the corresponding clamping rod (39). The rack (40) is symmetrically provided with a meshing area and a gap area between the two sets of meshing areas. When it is in the fixed area, the corresponding clamping rod (39) pushes the rack (40) out. The corresponding meshing area meshes with the gear ring (38) and drives the ball valve (37) and the injection pipe to form a passage. When it is in the positioning area, the gear ring (38) is in the gap area, so that the ball valve (37) and the injection pipe form a break.

10. The dual-channel precision infusion drive device for an insulin pump according to claim 9, characterized in that: The base (1) has symmetrically sliding cover plates (41) for covering the first handwheel (30) and the second handwheel (36).

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