Liquid medicine oscillation device for injection pump and injection system

Abstract

The application discloses a medicine liquid oscillation device for an injection pump and an injection system, and relates to the technical field of medical instruments. The medicine liquid oscillation device comprises a base shell, a mounting seat and a driving mechanism, wherein the mounting seat is movably arranged relative to the base shell, the mounting seat is provided with a mounting position for fixing and mounting the injection pump, and the mounting seat is further provided with a first driven position and a second driven position which are spaced apart, and the driving mechanism is used for alternately pushing the first driven position and the second driven position so as to swing the mounting seat. The above scheme can improve the uniformity of the mixing of the medicine components in the medicine liquid.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a drug oscillation device and injection system for an infusion pump. Background Technology

[0002] Infusion pumps, as medical devices capable of precisely and stably injecting medications, are widely used in clinical practice. For example, in interventional oncology, infusion pumps are used to inject suspensions of chemotherapy drugs and embolic materials into patients; in ultrasound examinations, infusion pumps are used to inject contrast agents into patients.

[0003] The uniformity of the mixture of components in a drug solution is closely related to its efficacy. Because drug suspensions can separate and stratify within a short time when at rest, uneven drug injection can affect therapeutic effects. Current technologies typically prevent separation and sedimentation by having medical staff manually shake the infusion pump continuously during injection, or by using a shaking device. Furthermore, interventional procedures require prolonged infusion under close X-ray observation, increasing the risk of radiation exposure for the medical staff. In practical applications of current technologies, even with continuous pump shaking, drug separation and sedimentation still occur, making it difficult to achieve the desired effect. Therefore, current technologies offer limited improvement in the uniformity of drug mixture mixing. Summary of the Invention

[0004] This application provides a drug solution oscillation device and injection system for an injection pump, which can improve the uniformity of drug component mixing in the drug solution.

[0005] To address the above problems, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a drug liquid oscillation device for an infusion pump, the drug liquid oscillation device comprising a base, a mounting base, and a driving mechanism, wherein:

[0007] The mounting base is movably disposed relative to the base shell. The mounting base has a mounting position for fixing the injection pump. The mounting base also has a first driven part and a second driven part distributed at intervals. The driving mechanism is used to alternately push the first driven part and the second driven part to make the mounting base swing.

[0008] In some embodiments of this application, the liquid oscillation device further includes a controller, which includes a wireless communication module. The controller is communicatively connected to the drive mechanism through the wireless communication module to remotely control the drive mechanism.

[0009] In some embodiments of this application, the first driven portion and the second driven portion are arranged along a first direction, or the first driven portion and the second driven portion are arranged along a second direction; wherein, when the injection pump is installed in the mounting position, the injection pump drives the syringe along the first direction, and the second direction is perpendicular to the first direction;

[0010] And / or, the base shell has an opening and a support surface disposed at the inner edge of the opening, the support surface being configured such that, during the swinging of the mounting base, the support surface at least partially abuts against the edge of the mounting base.

[0011] In some embodiments of this application, the driving mechanism includes a second driving device and an alternating transmission structure connected to each other, wherein the second driving device alternately drives the first driven part and the second driven part through the alternating transmission structure.

[0012] In some embodiments of this application, the alternating transmission structure includes a transmission shaft, a first cam, and a second cam, wherein: the transmission shaft is rotatably mounted on the base shell, the second driving device is connected to the transmission shaft, the first cam and the second cam are both mounted on the transmission shaft and rotate with the transmission shaft, the first cam is used to correspondingly push the first driven part, and the second cam is used to correspondingly push the second driven part;

[0013] Alternatively, the alternating transmission structure includes a crankshaft, a first piston, and a second piston, wherein: the crankshaft is rotatably disposed on the base housing; the second driving device is connected to the crankshaft; the first piston is telescopically disposed on the base housing and connected to the first connecting rod journal of the crankshaft; the second piston is telescopically disposed on the base housing and connected to the second connecting rod journal of the crankshaft; the first connecting rod journal and the second connecting rod journal are arranged off-axis; the first piston is used to correspondingly push the first driven part; and the second piston is used to correspondingly push the second driven part.

[0014] In some embodiments of this application, the arrangement direction of the first driven part and the second driven part intersects with the arrangement direction of the driving component of the alternating transmission structure; the driving mechanism further includes a first connecting member and a second connecting member, the alternating transmission structure is used to alternately drive the first connecting member and the second connecting member, the first connecting member is bent so that its force-applying end corresponds to the first driven part, and the second connecting member is bent so that its force-applying end corresponds to the second driven part.

[0015] In some embodiments of this application, the liquid oscillation device further includes a first connecting member and a second connecting member, wherein the first connecting member corresponds to the first driven portion, the second connecting member corresponds to the second driven portion, and the driving mechanism is used to alternately push the first connecting member and the second connecting member, wherein:

[0016] Both the first connector and the second connector are connected to the mounting base, and both the first connector and the second connector are elastic structural components; or, both the first connector and the second connector abut against the mounting base, and the liquid oscillation device further includes an elastic support member, the two ends of which are respectively connected to the mounting base and the base shell.

[0017] In some embodiments of this application, when the first driven part and the second driven part are arranged along the first direction, the swing amplitude of the mounting base near the first driven part is greater than the swing amplitude of the mounting base near the second driven part. The first driven part is provided corresponding to the output end of the injection pump, and the second driven part is provided corresponding to the drive end of the injection pump.

[0018] In some embodiments of this application, the force application stroke of the driving mechanism corresponding to the first driven part is greater than the force application stroke of the driving mechanism corresponding to the second driven part.

[0019] Secondly, embodiments of this application also provide an injection system, including an injection pump and the drug solution oscillation device described in the first aspect of this application, wherein the injection pump is installed at the mounting position.

[0020] The technical solution adopted in the embodiments of this application can achieve the following beneficial effects:

[0021] Firstly, in the drug liquid oscillation device disclosed in this application, a driving mechanism alternately pushes the first and second driven parts of the mounting base to cause the mounting base to swing. During the swinging process of the mounting base, the thrust it receives is obliquely distributed. This thrust can be decomposed into horizontal and vertical components. Overall, it causes the drug components in the syringe to move towards the middle of the syringe tube. The trajectory of this movement can be divided into multiple trajectories corresponding to the thrust components, thereby avoiding the separation and precipitation of drug components caused by oscillating the drug liquid in a single direction (e.g., front-back, left-right, up-down, or circumferential). Ultimately, uniform mixing is achieved. Compared with related technologies, the drug liquid oscillation device disclosed in this application can obviously improve the uniformity of mixing of drug components in the drug liquid.

[0022] Secondly, by setting up a controller that includes a wireless communication module, the controller can remotely control the drug oscillation device based on the wireless communication module. In this way, the surgeon can control the drug oscillation device outside the operating room through the controller. This scenario is particularly suitable for the injection of suspended drugs in interventional surgery, which can greatly reduce radiation damage to the medical staff performing the procedure. Attached Figure Description

[0023] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0024] In the attached diagram:

[0025] Figure 1 This is a schematic diagram of the structure of the injection system disclosed in some embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the structure of the injection system disclosed in the first embodiment of this application (with the base shell portion hidden);

[0027] Figure 3 This is a schematic diagram of the structure of the injection system disclosed in the second embodiment of this application (with the base shell portion hidden);

[0028] Figure 4 This is a schematic diagram of the structure of the injection system disclosed in the third embodiment of this application (with the base shell portion hidden);

[0029] Figure 5 This is a partial structural schematic diagram of the liquid oscillation device disclosed in the third embodiment of this application;

[0030] Figure 6 and Figure 7 This is a schematic diagram illustrating the working principle of the injection system disclosed in some embodiments of this application, which achieves back-and-forth swinging.

[0031] Figure 8 and Figure 9 This is a schematic diagram illustrating the working principle of the injection system disclosed in some embodiments of this application, which enables left-right oscillation.

[0032] Figure 10 This is a schematic diagram of the structure of the injection system disclosed in the fourth embodiment of this application (with the base shell portion hidden);

[0033] Figure 11 This is a schematic diagram illustrating the mating relationship between the base shell and the mounting base as disclosed in the fifth embodiment of this application;

[0034] Figure 12 This is a schematic diagram comparing the structures of the first cam and the second cam disclosed in the sixth embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100-Medicine liquid shaking device

[0037] 110-Base shell, 111-Opening, 112-Supporting surface, 113-Elastic support component

[0038] 120 - Mounting base, 121 - First driven part, 122 - Second driven part

[0039] 130 - Drive mechanism, 131 - Second drive device, 132 - First connecting member, 133 - Second connecting member, 134 - Alternating transmission structure, 134a - Drive shaft, 134b - First cam, 134b1 - First tooth, 134c - Second cam, 134c1 - Second tooth, 134d - Adapter, 134e - Crankshaft, 134e1 - First connecting rod journal, 134e2 - Second connecting rod journal, 134f - First piston, 134g - First sleeve, 134h - Second piston, 134i - Second sleeve

[0040] 140-Positioning foot,

[0041] 200-Injection pump, 200a-Output end, 200b-Drive end, 210-First drive device, 220-Lead screw, 300-Controller, 400-Injector, 410-Injector tube. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] The technical solutions disclosed in the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0044] In related technologies, the existing method of shaking the injection pump with an oscillation device cannot effectively mix the various drug components of the solution evenly, and separation and precipitation are still likely to occur, making it difficult to achieve the desired efficacy and obtain excellent clinical treatment results.

[0045] Through research, the inventors discovered that the aforementioned problems are primarily caused by the overly unidirectional shaking direction of existing oscillation devices. Specifically, when shaking a syringe pump using existing oscillation devices, the process is often achieved by shaking the pump back and forth in the same direction, while no shaking is performed in other directions. This easily leads to separation and precipitation of the drug components. For example, in scenarios where the syringe pump is shaken left and right, the drug components in the vertical direction tend to precipitate at the bottom of the syringe tube; in scenarios where the syringe pump is shaken circumferentially, the drug components are easily adhered to the inner wall of the syringe tube due to centrifugal force, resulting in insufficient suspension of drug components in the middle of the syringe tube. Therefore, the existing method of shaking the syringe pump makes it difficult to achieve an ideal, uniform mixing state for the drug components.

[0046] In view of this, some embodiments of this application provide a drug solution oscillation device for an injection pump, which can improve the uniformity of drug component mixing in the drug solution by driving the mounting base to oscillate.

[0047] Please see Figures 1-12 The drug liquid oscillation device 100 disclosed in this application includes a base shell 110, a mounting base 120, and a drive mechanism 130. The mounting base 120 is movably disposed relative to the base shell 110 and has a mounting position for fixing the injection pump 200. The mounting base 120 also has a first driven portion 121 and a second driven portion 122 spaced apart. The drive mechanism 130 is used to alternately push the first driven portion 121 and the second driven portion 122 to cause the mounting base 120 to oscillate. The base shell 110 is the basic component of the drug liquid oscillation device 100, serving as the mounting base for other components and also protecting at least some of them. The embodiments of this application do not limit the specific structural type of the base shell 110; it can also be a frame structure.

[0048] The liquid oscillation device 100 may also include a positioning support 140 located at the bottom of the base shell 110, which can be fixedly installed on the mounting base (e.g., a workbench) via the positioning support 140.

[0049] In the embodiments of this application, since the mounting base 120 is movably disposed relative to the base shell 110, the mounting base 120 can move relative to the base shell 110 to achieve a swinging motion of the mounting base 120. When the infusion pump 200 is mounted in the mounting position, the infusion pump 200 can swing with the mounting base 120. At the same time, the infusion pump 200 can fix the syringe 400, so the syringe 400 mounted on the infusion pump 200 can also swing with the mounting base 120, thereby mixing the drug solution in the syringe 400.

[0050] Regarding the syringe pump 200, it can drive the lead screw 220 through the first drive device 210 on it, and drive the syringe 400 to realize the liquid injection operation. Its specific working principle is well known and will not be described in detail.

[0051] The drive mechanism 130 is the power source of the liquid oscillation device 100. It causes the mounting base 120 to swing by alternately pushing the first driven part 121 and the second driven part 122, thereby shaking the injection pump 200. It can be understood that the first driven part 121 and the second driven part 122 correspond to the force-applying parts of the drive mechanism 130, and they are distributed at intervals to facilitate alternating force application and achieve the swinging motion of the mounting base 120. The first driven part 121 and the second driven part 122 are typically located on opposite sides of the corresponding central axis of the mounting base 120 to facilitate the swinging motion; however, the embodiments of this application do not limit this, and the first driven part 121 and the second driven part 122 may also be located on the same side of the central axis of the mounting base 120, as long as the swinging motion can be achieved.

[0052] It should be noted that both the first driven portion 121 and the second driven portion 122 are general areas on the mounting base 120 that are pushed by the driving mechanism 130. These areas can be fixed parts on the mounting base 120 or parts that change with the swinging motion. For example, in an embodiment where the driving mechanism 130 swings by pushing against the mounting base 120, the area on the mounting base 120 that the driving mechanism 130 pushes against changes as the mounting base 120 swings. That is, the first driven portion 121 and the second driven portion 122 include the area on the mounting base 120 that is pushed against, which changes with the swinging motion. To facilitate the illustration of the layout and orientation relationships between structures, a spatial coordinate system is constructed in the accompanying drawings of the embodiments of this application, but this is not intended to limit the structural layout and orientation relationships in the embodiments of this application.

[0053] In the embodiments of this application, the specific swing direction of the mounting base 120 is not limited, that is, the arrangement direction of the first driven part 121 and the second driven part 122. It should be noted that both the injection pump 200 and the syringe 400 swing through the mounting base 120, and the force conditions of the injection pump 200 and the syringe 400 can be characterized by the force conditions of the mounting base 120. That is, the oscillation effect of the drug solution in the syringe 400 can be characterized by analyzing the force on the mounting base 120.

[0054] In one specific embodiment of this application, the first driven portion 121 and the second driven portion 122 are arranged along a first direction on the mounting base 120; wherein, when the syringe pump 200 is mounted in the mounting position, the syringe pump 200 drives the syringe 400 along the first direction. It can be understood that, as Figure 2As shown, the first direction can be referenced to the X-axis direction. Since the injection pump 200 drives the syringe 400 along the first direction, the syringe 400 is also arranged to extend along the first direction on the injection pump 200. This implementation can also be understood as the drug liquid oscillation device 100 driving the injection pump 200 to roughly achieve back-and-forth oscillation.

[0055] As mentioned above, the mounting base 120 is movably disposed relative to the base shell 110. Under the alternating pushing action of the drive mechanism 130, it will tilt accordingly. Thus, the first driven part 121 and the second driven part 122 will alternately switch between high and low positions.

[0056] like Figure 6 and Figure 7 As shown, during the alternating pushing of the first driven part 121 and the second driven part 122 by the drive mechanism 130, the first driven part 121 is pushed, and compared to the second driven part 122, the first driven part 121 is gradually pushed to a higher position. Force analysis of the mounting base 120 shows that the thrust F it experiences is distributed perpendicularly to the mounting base 120, specifically divided into a component along the X-axis direction, i.e., F1... X And the component along the Z-axis, i.e., F Z The thrust F received by the mounting base 120 indirectly acts on the syringe pump 200 and the syringe 400 thereon, which is equivalent to making the syringe pump 200 swing in both the front-back direction and the up-down direction. The lower of the first driven part 121 and the second driven part 122 corresponds to its swing fulcrum, and the mounting base 120 swings around this point.

[0057] It is worth noting that as the mounting base 120 alternates in its swinging motion, both the first driven part 121 and the second driven part 122 alternate between high and low positions, thus alternately achieving the back-and-forth swinging motion. Of course, as the mounting base 120 swings, its tilt angle gradually changes, and the direction of the thrust F acting on the higher position of the first driven part 121 and the second driven part 122 also changes accordingly. For details, please refer to [link to relevant documentation]. Figure 6 and Figure 7 , Figure 7 In the swing amplitude greater than Figure 6 state, Figure 7 Compared to medium thrust F Figure 6 The thrust F in the middle is tilted more to the right, therefore, F X Increase, F Z Decrease.

[0058] It can be seen that during the swinging process of the mounting base 120, the thrust components it receives in the front-back direction and the up-down direction change accordingly, thereby changing the amplitude of the swinging motion of the injection pump 200 and the syringe 400 in the two directions, so as to balance the swing amplitude in different directions and improve the uniformity of drug component mixing.

[0059] Essentially, in the above embodiments of this application, when the mounting base 120 is driven, the thrust F on the mounting base 120 can be divided into thrust components in the front-back direction and the up-down direction. This allows oscillation to be achieved in multiple directions, avoiding the problem of the existing oscillation device having a single shaking direction. This prevents the separation and precipitation of drug components in the syringe 400 and improves the uniformity of drug component mixing in the liquid.

[0060] Alternatively, in another embodiment of this application, the first driven portion 121 and the second driven portion 122 may be arranged on the mounting base 120 along a second direction; the second direction is perpendicular to the aforementioned first direction. It can be understood that, as Figure 3 and Figure 4 As shown, the second direction can be referenced to the Y-axis direction. Since the injection pump 200 drives the syringe 400 along the first direction, this implementation can also be understood as the drug liquid oscillation device 100 driving the injection pump 200 to roughly oscillate left and right.

[0061] As mentioned earlier, the mounting base 120 is movably disposed relative to the base shell 110, and it will tilt accordingly under the pushing action of the drive mechanism 130, thus, as Figure 8 and Figure 9 As shown, during the alternating pushing of the first driven part 121 and the second driven part 122 by the drive mechanism 130, the first driven part 121 is pushed, and compared to the second driven part 122, the first driven part 121 is gradually pushed to a higher position. Force analysis of the mounting base 120 shows that the thrust F it experiences is distributed perpendicularly to the mounting base 120, specifically divided into a component along the Y-axis, i.e., F1. Y And the component along the Z-axis, i.e., F X This is equivalent to enabling the syringe pump 200 to oscillate in both the left-right and up-down directions. The lower of the first driven part 121 and the second driven part 122 corresponds to its oscillation fulcrum, around which the mounting base 120 oscillates.

[0062] It is worth noting that as the mounting base 120 alternates in its swinging motion, both the first driven part 121 and the second driven part 122 alternate between high and low positions, thus alternately achieving left-right swinging motion. Of course, as the mounting base 120 swings, its tilt angle gradually changes, and the direction of the thrust F acting on the higher position of the first driven part 121 and the second driven part 122 also changes accordingly. For details, please refer to [link to relevant documentation]. Figure 8 and Figure 9 , Figure 9 In the swing amplitude greater than Figure 8 state, Figure 9 Compared to medium thrust F Figure 8 The thrust F in the middle is tilted more to the right, therefore, F Y Increase, F Z Decrease.

[0063] It can be seen that during the swinging process of the mounting base 120, the thrust components it receives in the left-right and up-down directions change accordingly, thereby changing the amplitude of the swinging motion of the injection pump 200 and the syringe 400 in the two directions, so as to balance the swing amplitude in different directions and improve the uniformity of drug component mixing.

[0064] Essentially, in the process of the drug liquid oscillation device 100 in this application embodiment being driven by the mounting base 120, the thrust F received by the mounting base 120 can be divided into thrust components in the left-right direction and the up-down direction. In this way, oscillation can be achieved in multiple directions, avoiding the problem of the existing oscillation device having a single shaking direction. This can prevent the drug components in the syringe 400 from separating and precipitating, and improve the uniformity of the drug component mixing in the drug liquid.

[0065] In the two embodiments described above in this application, the mounting base 120 swings along a regular distribution direction such as the first direction and the second direction. Of course, it can also swing along a direction relative to the first direction and the second direction, that is, the first driven part 121 and the second driven part 122 are distributed along a direction that intersects with the first direction or the second direction.

[0066] Regardless of the arrangement of the first driven part 121 and the second driven part 122, during the swinging process of the mounting base 120, the thrust F experienced by the mounting base 120 is distributed obliquely, specifically obliquely relative to the horizontal plane or the vertical direction. Thus, the thrust F experienced by the mounting base 120 can be decomposed into a horizontal component (e.g., F0). X and F Y ) and the vertical component (i.e., F) ZThe device causes the drug components in the syringe 400 to move towards the center of the syringe tube 410. The trajectory of this movement can be divided into multiple directions corresponding to the thrust component, thus avoiding separation and precipitation of drug components caused by oscillating the drug solution in a single direction (e.g., front-back, left-right, up-down, or circumferential). This ultimately achieves uniform mixing. Compared to related technologies, the drug solution oscillation device 100 disclosed in this application obviously improves the uniformity of mixing of drug components in the drug solution.

[0067] In the embodiments of this application, the specific type of the injection pump 200 is not limited; it can be a single-channel type, or a multi-channel type such as a dual-channel or triple-channel pump, and can be selected according to actual needs. Of course, depending on the type of injection pump 200, the drug solution oscillation device 100 can be adapted with structural modifications. For example... Figure 1 and Figure 2 As shown, the liquid oscillation device 100 also includes a controller 300, which includes a wireless communication module. The controller 300 is connected to the drive mechanism 130 via the wireless communication module to remotely control the drive mechanism 130. It can be understood that the operator can control the drive mechanism 130 through the controller 300, thereby controlling the working state of the liquid oscillation device 100, such as controlling the start and stop of the swinging motion of the mounting base 120, and the frequency of the swinging motion.

[0068] In some surgical procedures, surgeons need to operate infusion pumps in the operating room, which exposes them to radiation. Additionally, the medications used during the procedure can easily evaporate into the air, leading to toxic side effects in the environment.

[0069] In this embodiment, the controller 300 can communicate wirelessly with the drive mechanism 130 through the wireless communication module, that is, to achieve remote control. In this way, the surgeon can control the drug liquid oscillation device 100 outside the operating room through the controller 300, thereby avoiding injury inside the operating room.

[0070] The wireless communication module can be a Wi-Fi module, a Bluetooth module, an ultra-wideband module, etc.

[0071] like Figures 2-5 As shown, in some embodiments of this application, the drive mechanism 130 includes a second drive device 131 and an alternating transmission structure 134 connected to each other. The second drive device 131 alternately drives the first driven part 121 and the second driven part 122 through the alternating transmission structure 134.

[0072] It is understood that in this embodiment, by setting the alternating transmission structure 134, the second driving device 131 alternately pushes the first driven part 121 and the second driven part 122, thus completing the swinging action of the mounting base 120. This structural layout reduces the number of driving devices, which can reduce costs and reduce the overall space occupied by the driving mechanism 130, thus optimizing the structural layout.

[0073] In the embodiments of this application, the specific type of the drive mechanism 130 is not limited. For example, the drive mechanism 130 may include two independent drive devices (such as linear motors), which may respectively drive the first driven part 121 and the second driven part 122 of the mounting base 120.

[0074] In the embodiments of this application, the alternating transmission structure 134 has various structural forms.

[0075] like Figure 2 As shown, in one specific implementation, the alternating transmission structure 134 includes a transmission shaft 134a, a first cam 134b, and a second cam 134c, wherein: the transmission shaft 134a is rotatably mounted on the base shell 110, and the second driving device 131 is connected to the transmission shaft 134a to drive the transmission shaft 134a to rotate; the first cam 134b and the second cam 134c are both mounted on the transmission shaft 134a and rotate with the transmission shaft 134a, the first cam is used to correspondingly push the first driven part 121, and the second cam is used to correspondingly push the second driven part 122.

[0076] Understandably, with this layout, during the rotation of the drive shaft 134a, the first cam 134b and the second cam 134c rotate with the drive shaft 134a, gradually changing their orientation towards the support portion of the mounting base 120. When the cam teeth (i.e., the protruding parts of the cams) rotate to be opposite the mounting base 120, the mounting base 120 swings to its highest point at the corresponding position. Of course, the cam teeth of the first cam 134b and the second cam 134c need to be staggered in the circumferential direction to alternately drive the mounting base 120 to achieve the swinging action. The above-described cam-based alternating transmission structure is simple in structure, has low processing costs, and is compact in overall design, improving space utilization.

[0077] It is worth noting that the drive mechanism 130 can directly push the first driven part 121 and the second driven part 122 through the first cam 134b and the second cam 134c, or it can indirectly achieve the pushing effect by setting a connecting structure between the alternating transmission structure 134 and the mounting base 120.

[0078] Furthermore, such as Figure 2As shown, the first cam 134b has a first tooth 134b1, and the second cam 134c has a second tooth 134c1. The first tooth 134b1 and the second tooth 134c1 are arranged to protrude in opposite directions, which makes the alternating oscillation interval of the mounting base 120 and the injection pump 200 more balanced, which is beneficial to improving the uniformity of drug component mixing in the liquid.

[0079] Or, such as Figure 3 and Figure 4 As shown, in another implementation of the alternating transmission structure 134, the alternating transmission structure 134 includes a crankshaft 134e, a first piston 134f, and a second piston 134h, wherein: the crankshaft 134e is rotatably disposed on the base housing 110, and the second drive device 131 is connected to the crankshaft 134e to drive the crankshaft 134e to rotate; the first piston 134f is telescopically disposed on the base housing 110 and connected to the first connecting rod journal 134e1 of the crankshaft 134e, and the second piston 134h is telescopically disposed on the base housing 110 and connected to the second connecting rod journal 134e2 of the crankshaft 134e. The first connecting rod journal 134e1 and the second connecting rod journal 134e2 are arranged off-axis. The first piston 134f is used to correspondingly push the first driven part 121, and the second piston 134h is used to correspondingly push the second driven part 122.

[0080] Understandably, with this layout, during the driven rotation of the crankshaft 134e, the first connecting rod journal 134e1 and the second connecting rod journal 134e2 will also rotate, changing their circumferential positions around the main axis of the crankshaft 134e, thereby driving the first piston 134f and the second piston 134h to extend and retract. Simultaneously, since the first connecting rod journal 134e1 and the second connecting rod journal 134e2 are arranged on opposite axes, the first piston 134f and the second piston 134h can alternately extend and retract, respectively pushing the first driven part 121 and the second driven part 122, thereby driving the mounting base 120 to swing. This crankshaft-piston structure, employing an alternating transmission layout, transforms rotational driving action into linear driving action, thus improving the pushing efficiency of the mounting base 120 and consequently enhancing the control sensitivity of the liquid oscillation device 100.

[0081] It is worth noting that the drive mechanism 130 can directly push the first driven part 121 and the second driven part 122 through the first piston 134f and the second piston 134h, or it can indirectly achieve the pushing effect by setting a connecting structure between the alternating transmission structure 134 and the mounting base 120.

[0082] Furthermore, such as Figure 3 and Figure 4As shown, the first connecting rod journal 134e1 and the second connecting rod journal 134e2 are distributed on the same radial direction of the crankshaft 134e. This makes the alternating oscillation interval of the mounting seat 120 and the injection pump 200 more balanced, which is beneficial to improving the uniformity of drug component mixing in the liquid.

[0083] To ensure that the first piston 134f and the second piston 134h can telescopically move along a preset trajectory, the base shell 110 may be provided with a telescopic channel for the movement of the first piston 134f and the second piston 134h. For example... Figures 3-5 As shown, the alternating transmission structure 134 may further include a first sleeve 134g and a second sleeve 134i connected to the base shell 110. A first piston 134f is movably disposed within the first sleeve 134g, which provides a telescopic channel for the first piston 134f and also constrains and guides it. A second piston 134h is movably disposed within the second sleeve 134i, which provides a telescopic channel for the second piston 134h and also constrains and guides it. Alternatively, the first sleeve 134g and the second sleeve 134i may be directly formed on the base shell 110.

[0084] In some application scenarios, the arrangement direction of the first driven part 121 and the second driven part 122 intersects with the arrangement direction of the driving components (such as the aforementioned cam, piston, etc.) of the alternating transmission structure 134. This will make it difficult for the drive mechanism 130 to apply thrust to the first driven part 121 and the second driven part 122 on the mounting base 120 to achieve the swing action.

[0085] Based on this, in some embodiments of this application, the drive mechanism 130 further includes a first connector 132 and a second connector 133, and an alternating transmission structure 134 is used to alternately drive the first connector 132 and the second connector 133. The first connector 132 is bent so that its force-applying end corresponds to the first driven part 121, and the second connector 133 is bent so that its force-applying end corresponds to the second driven part 122.

[0086] It is understood that the bending setting can change the extension path of the first connector 132 and the second connector 133, so that the force-applying end of the first connector 132 extends to correspond to the first driven part 121, thereby pushing the first driven part 121, and the force-applying end of the second connector 133 extends to correspond to the second driven part 122, thereby pushing the second driven part 122, so as to smoothly realize the swinging action of the mounting base 120, without changing the structural layout of the alternating transmission structure 134, and ensuring that the mounting base 120 can realize the swinging action in the predetermined direction.

[0087] In optional embodiments, such as Figures 3-5 As shown, the first piston 134f and the second piston 134h are arranged along a first direction, which can be seen in the X-axis direction of the figure. The first driven part 121 and the second driven part 122 are arranged along a second direction, which can be seen in the Y-axis direction of the figure. The first connecting member 132 corresponds to the first driven part 121 by bending, and the second connecting member 133 corresponds to the second driven part 122 by bending. The first connecting member 132 and the second connecting member 133 are misaligned with each other to avoid interference.

[0088] It is worth emphasizing that the arrangement of the alternating transmission structure 134 needs to take into account the layout space of the base shell 110. Figures 3-5 In the illustrated embodiment, the crankshaft 134e in the alternating transmission structure 134 is arranged along the first direction, which makes use of the larger layout space in the base housing 110 in the first direction. Meanwhile, the mounting base 120 is required to perform a swinging motion in the second direction. This embodiment can take both of these considerations into account by setting up a curved first connector 132 and a curved second connector 133.

[0089] In some embodiments of this application, the base shell 110 has an opening 111 and a support surface 112 disposed on the inner edge of the opening 111. The support surface 112 is configured such that, during the swinging of the mounting base 120, the support surface 112 at least partially abuts against the edge of the mounting base 120.

[0090] It is understandable that when the mounting base 120 abuts against the support surface 112, the support surface 112 can provide support for the mounting base 120. Simultaneously, with this arrangement, the support surface 112 can limit and stop the mounting base 120 while supporting it, thus constraining its swinging motion and preventing it from deflecting outwards from the base shell 110. This allows the mounting base 120 and the injection pump 200 to achieve regular and moderately amplitude swinging motions, thereby optimizing the uniformity of drug component mixing in the solution. Of course, when the base shell 110 passes through the support surface 112, it can prevent excessive swinging amplitudes of the injection pump 200 and the syringe 400, which could cause the syringe 400 to accidentally detach from the injection pump 200 during the agitation of the drug solution.

[0091] Among them, such as Figure 10 As shown, the support surface 112 can have an optional inclined surface, such as... Figure 11 As shown, the support surface 112 can be selected as an arc surface adapted to the swing trajectory of the edge of the mounting base 120, thus providing a better restraining and stopping effect on the mounting base 120.

[0092] In the embodiments of this application, the swing amplitude of the mounting base 120 is not limited, such as Figure 11As shown, the swing angle range of the mounting base 120 is defined as α. For example, the mounting base 120 can swing within the range of -30° to 30°, or within the range of -35° to 35°.

[0093] In some embodiments of this application, the mounting base 120 oscillates alternately within the range of -20° to 20°, i.e., α satisfies the relationship: -20°≤α≤20°. This arrangement allows the mounting base 120 to alternately oscillate with a relatively small amplitude, increasing the oscillation frequency of both the mounting base 120 and the injection pump 200, thereby improving the uniformity of drug component mixing in the solution. Simultaneously, because the oscillation amplitude of the mounting base 120 is small, it reduces the amount of drug components adhering to the wall of the syringe tube 410 due to inertial motion.

[0094] In some embodiments of this application, the liquid oscillation device 100 further includes a first connector 132 and a second connector 133. The first connector 132 corresponds to the first driven part 121, and the second connector 133 corresponds to the second driven part 122. The driving mechanism 130 is used to alternately push the first connector 132 and the second connector 133.

[0095] Among them, such as Figure 2 As shown, both the first connector 132 and the second connector 133 are connected to the mounting base 120, and both the first connector 132 and the second connector 133 are elastic structural components.

[0096] It is understood that in this embodiment, the first connector 132 and the second connector 133 can support the mounting base 120. With this arrangement, as the mounting base 120 swings, the connection state between it and the first connector 132 and the second connector 133 will change with the swinging motion. Since both the first connector 132 and the second connector 133 are elastic structural components, they can achieve a flexible connection with the connection part of the mounting base 120 through their own deformation. This allows for smooth swinging motion while avoiding the risk of damage from rigid connections.

[0097] Meanwhile, based on the elastic characteristics of the elastic structural components, during the process of the drive mechanism 130 pushing the mounting base 120 through the first connector 132 and the second connector 133, both the first connector 132 and the second connector 133 exhibit compression energy storage and rebound energy release phenomena. This can appropriately enhance the swing amplitude and swing frequency of the mounting base 120 in the extension direction of the aforementioned connectors, thereby optimizing the oscillation effect on the liquid medicine.

[0098] Of course, such as Figure 3As shown, the first connector 132 and the second connector 133 can also be non-elastic structural components, which support the mounting base 120 and are used to alternately push the first driven part 121 and the second driven part 122. Under this structural layout, it can achieve a relatively stable support effect, and can have a certain bending deformation when the mounting base 120 swings.

[0099] Alternatively, in another embodiment, such as Figure 4 As shown, the first connector 132 and the second connector 133 both abut against the mounting base 120. The liquid oscillation device 100 also includes an elastic support 113, with the two ends of the elastic support 113 connected to the mounting base 120 and the base shell 110, respectively.

[0100] It is understood that in this embodiment, the first connector 132 and the second connector 133 primarily apply a thrust to the mounting base 120, while the elastic support member 113 provides support for the mounting base 120. Thus, as... Figure 4 and Figure 5 As shown, the first connector 132 and the second connector 133 can be non-elastic structural components. In addition to providing reliable support, they can also provide more stable, faster and stronger thrust so that the mounting base 120 can quickly respond to the swinging action.

[0101] Meanwhile, in this embodiment, the elastic support 113 acts as an elastic buffer to prevent the mounting base 120 from swinging too much.

[0102] Furthermore, it is worth noting that in this embodiment, the mounting base 120 obtains its support through the elastic support member 113. That is, the mounting base 120 achieves a support effect through elastic floating. Therefore, when the mounting base 120 swings under force, the elastic support member 113 undergoes compression and rebound deformation, causing the mounting base 120 to also float up and down. Of course, this floating motion is limited by the elastic support member 113 under extreme conditions. It is precisely because the mounting base 120 exhibits both swinging and up-and-down floating motion that it further agitates the drug components within the syringe 400 on the infusion pump 200, thereby further improving their uniformity.

[0103] like Figure 2 As shown, in an embodiment where the alternating transmission structure 134 includes a cam structure, in order to facilitate the setting of the first connecting member 132 and the second connecting member 133, the alternating transmission structure 134 may also include a transition member 134d. The first cam 134b and the second cam 134c can alternately push the transition member 134d, and the transition member 134d drives the first connecting member 132 and the second connecting member 133 to alternately push the mounting base 120.

[0104] Preferably, the adapter 134d is an adapter plate.

[0105] like Figures 2-4 As shown, in some embodiments of this application, when the first driven portion 121 and the second driven portion 122 are arranged along a first direction, the swing amplitude of the mounting base 120 near the first driven portion 121 is greater than the swing amplitude of the mounting base 120 near the second driven portion 122. The first driven portion 121 is provided corresponding to the output end 200a of the injection pump 200, and the second driven portion 122 is provided corresponding to the drive end 200b of the injection pump 200.

[0106] It is understandable that in the implementation of the back-and-forth swing, it is necessary to consider that as the syringe pump 200 drives the syringe 400 to inject the drug solution, the amount of drug solution in the syringe pump 200 decreases. As the amount of drug solution decreases, the drug solution in the syringe 400 gets closer and closer to the output end 200a of the syringe pump 200. The weight distribution gradient of the syringe pump 200 will gradually change. Specifically, the weight is greater closer to the output end 200a of the syringe pump 200, and the swing amplitude on the output end 200a side of the syringe pump 200 becomes smaller and smaller. Especially in the aforementioned embodiment where the drive structure 130 is connected to the mounting base 120 through an elastic structural member, this causes the swing amplitude of the syringe pump 200 to become unbalanced, which in turn leads to a decrease in the mixing uniformity of the drug components in the first direction.

[0107] In this embodiment, the above-described structural layout makes the swing amplitude on the output end 200a side of the injection pump 200 greater than the swing amplitude on the drive end 200b side of the injection pump 200. As the injection pump 200 drives the syringe 400 to gradually output the drug solution, it can compensate for the imbalance of the swing amplitude caused by the gradual change in the weight distribution gradient of the injection pump 200, so as to optimize the uniformity of the drug components in the first direction.

[0108] Furthermore, the force application stroke of the drive mechanism 130 corresponding to the first driven portion 121 is greater than the force application stroke of the drive mechanism 130 corresponding to the second driven portion 122. It should be noted that the force application stroke of the drive mechanism 130 refers to the stroke by which it acts on the mounting base 120, causing the mounting base 120 to move in the force application direction. With this arrangement, the mounting base 120 can achieve a larger pushing stroke at the first driven portion 121, thereby enhancing the swing amplitude on that side.

[0109] In the embodiments of this application, the drive mechanism 130 may have various structural forms so that the force application strokes corresponding to the first driven part 121 and the second driven part 122 are different.

[0110] like Figure 12As shown, in one specific implementation, in an embodiment where the drive mechanism 130 drives the mounting base 120 to swing alternately via a cam structure, the rotation radius R1 of the first tooth 134b1 of the first cam 134b can be configured to be greater than the rotation radius R2 of the second tooth 134c1 of the second cam 134c. For details, please refer to... Figure 12 The horizontal dashed line represents this. Thus, the value obtained by subtracting the base circle radius of the first cam 134b from R1 must be greater than the value obtained by subtracting the base circle radius of the second cam 134c from R2. Therefore, the first cam 134b can push the first driven part 121 of the mounting base 120 higher than the second cam 134c, thereby making the swing amplitude of the mounting base 120 near the first driven part 121 greater than the swing amplitude of the mounting base 120 near the second driven part 122. In other words, the swing amplitude of the injection pump 200 near its output end 200a is greater.

[0111] In other implementations, the drive mechanism 130 can use other force-applying structures to achieve differences in the force-applying stroke. For example, in an embodiment where the drive mechanism 130 drives the mounting base 120 to swing alternately through a crankshaft piston structure, the rotation radius of the first connecting rod journal 134e1 relative to the crankshaft 134e main shaft can be set to be greater than the rotation radius of the second connecting rod journal 134e2 relative to the crankshaft 134e main shaft. This allows the travel stroke of the first piston 134f to be greater than the travel stroke of the second piston 134h.

[0112] like Figures 6-9 As shown, the mounting base 120 has a first central axis O1 and a second central axis O2, the first central axis O1 is arranged along a second direction, and the second central axis O2 is arranged along a first direction.

[0113] In some embodiments of this application, when the first driven portion 121 and the second driven portion 122 are arranged along a first direction, the first distance between the first driven portion 121 and the first central axis O1 is greater than the second distance between the second driven portion 122 and the first central axis O1.

[0114] It is understandable that as the injection process proceeds, the weight of the syringe 400 and the liquid becomes increasingly concentrated on the side of the mounting base 120 closest to the first driven part 121, which increases the difficulty of swinging the mounting base 120 on the side closest to the first driven part 121. In this embodiment, compared to the case where the first distance and the second distance are equal, the lever arm of the thrust applied by the drive mechanism 130 is correspondingly increased, which increases the torque on the mounting base 120, thereby reducing the difficulty of swinging the mounting base 120 to a certain extent.

[0115] In some embodiments of this application, when the first driven portion 121 and the second driven portion 122 are arranged along the second direction, the swing amplitude of the mounting base 120 on the side closer to the first driven portion 121 is equal to the swing amplitude of the mounting base 120 on the side closer to the second driven portion 122.

[0116] It is understandable that in the implementation of the left and right swinging method, there will be basically no change in the weight distribution gradient of the injection pump 200 in the second direction. Therefore, the above structural layout can further enhance the balance of the left and right swinging motion of the injection pump 200, thereby optimizing the uniformity of the mixing of drug components in the liquid.

[0117] Specifically, when the first driven portion 121 and the second driven portion 122 are arranged along the second direction, the distance between the first driven portion 121 and the second central axis O2 is equal to the distance between the second driven portion 122 and the second central axis O2.

[0118] It is understood that, based on the above structural layout, the lever arm of the drive mechanism 130 when it applies a pushing action to the first driven part 121 is equal to the lever arm when it applies a pushing action to the second driven part 122. Thus, during the alternating left and right swinging of the injection pump 200 with the mounting base 120, the swinging torque applied by the drive mechanism 130 to the first driven part 121 is equal to the swinging torque applied to the second driven part 122. This ensures that the swing amplitude of the mounting base 120 on the side closer to the first driven part 121 is equal to the swing amplitude of the mounting base 120 on the side closer to the second driven part 122, that is, the swing amplitudes of the left and right sides of the injection pump 200 are relatively balanced.

[0119] Please see Figures 1-12 Some embodiments of this application also provide an injection system, including an injection pump 200 and a drug liquid oscillation device 100 mentioned in any of the foregoing solutions. The injection pump 200 is installed in the mounting position, so that the injection system has the beneficial effects of any of the foregoing drug liquid oscillation devices 100, which will not be described in detail here.

[0120] In actual use, the syringe 400 is placed on the injection pump 200, which can control the injection rate of the syringe 400. Optionally, the injection rate of the syringe 400 can be in the range of 0.2 ml / min to 10 ml / min.

[0121] In some embodiments of this application, the injection system may include a syringe 400. The capacity of the syringe 400 is not limited; optionally, the drug solution capacity of the syringe 400 may be 2 ml to 50 ml. Optionally, the injection system may also include a display device, an operating table, etc.

[0122] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0123] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A drug solution oscillation device for an injection pump, characterized in that, The liquid medicine oscillation device includes a base shell, a mounting base, and a drive mechanism, wherein: The mounting base is movably disposed relative to the base shell. The mounting base has a mounting position for fixing the injection pump. The mounting base also has a first driven part and a second driven part distributed at intervals. The driving mechanism is used to alternately push the first driven part and the second driven part to make the mounting base swing. The first driven part and the second driven part are arranged along a first direction. When the injection pump is installed in the mounting position, the injection pump drives the syringe along the first direction. The driving mechanism includes a second driving device and an alternating transmission structure connected to each other. The second driving device alternately drives the first driven part and the second driven part through the alternating transmission structure. The alternating transmission structure includes a transmission shaft, a first cam, and a second cam, wherein: the transmission shaft is rotatably mounted on the base shell, the second driving device is connected to the transmission shaft, the first cam and the second cam are both mounted on the transmission shaft and rotate with the transmission shaft, the first cam is used to correspondingly push the first driven part, and the second cam is used to correspondingly push the second driven part; The liquid oscillation device further includes a first connector and a second connector. The first connector corresponds to the first driven part, and the second connector corresponds to the second driven part. The driving mechanism is used to alternately push the first connector and the second connector. The first connector and the second connector are both connected to the mounting base, and the first connector and the second connector are both elastic structural members. The alternating transmission structure further includes a transition member, wherein the first connecting member and the second connecting member are disposed on the transition member, and the first cam and the second cam alternately push the transition member; The first driven part is disposed corresponding to the output end of the injection pump, and the second driven part is disposed corresponding to the drive end of the injection pump; the force application stroke of the drive mechanism corresponding to the first driven part is greater than the force application stroke of the drive mechanism corresponding to the second driven part; the swing amplitude of the mounting base near the first driven part is greater than the swing amplitude of the mounting base near the second driven part.

2. The liquid oscillation device according to claim 1, characterized in that, The liquid oscillation device also includes a controller, which includes a wireless communication module. The controller communicates with the drive mechanism through the wireless communication module to remotely control the drive mechanism.

3. The liquid oscillation device according to claim 1, characterized in that, The base shell has an opening and a support surface located at the inner edge of the opening. The support surface is configured such that, during the swinging of the mounting base, the support surface at least partially abuts against the edge of the mounting base.

4. An injection system, characterized in that, It includes an injection pump and a drug solution oscillation device according to any one of claims 1 to 3, wherein the injection pump is installed at the mounting position.

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