Infusion device

Abstract

The present application relates to the technical field of medical infusion pump, and relates to an infusion device which comprises a bearing structure, an infusion assembly and a driving assembly, the number of the infusion assembly is multiple groups; the bearing structure is provided with an input port, an output port and multiple infusion cavities, and the multiple infusion cavities are sequentially communicated; the multiple groups of infusion assemblies are movably connected with the multiple infusion cavities respectively, and the infusion assembly is used for sealing or opening the liquid inlet hole; the driving assembly is used for driving the infusion assembly to move relative to the infusion cavity, so that the end of the multiple groups of infusion assemblies is distributed along a cosine curve. In the infusion device of the embodiment, through cooperation of the driving assembly and the multiple groups of infusion assemblies, external liquid can be driven to enter the infusion cavity through the input port and be discharged through the output port, so as to realize the effect of pumping liquid, compared with the infusion device of the extrusion infusion tube type, the infusion precision and the durability of the infusion device can be effectively improved, meanwhile, the power consumption can be reduced, and the use effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical infusion pump, and particularly relates to an infusion device. BACKGROUND

[0002] Infusion equipment is widely used in the medical field. However, there are some problems in the infusion pumps used in the market at present, such as the deviation of infusion precision with the increase of pressure difference, the attenuation of flexible infusion tube after long time use, etc. When the difference between the inlet pressure and the outlet pressure of the infusion pump is large, the deviation of infusion precision will also increase. In addition, after the flexible infusion tube is extruded for a long time, its resilience decreases, resulting in a large difference between the infusion flow rate and the theoretical value, thereby reducing the infusion precision. The flexible infusion tube in the market at present is generally only suitable for gravity infusion, and it is difficult to guarantee the precision when used as a pump infusion tube. In order to solve these problems, some infusion pump manufacturers design infusion tubes specially used for infusion pumps, and the tube segment of the working part of the infusion pump is made of silica gel tube with good elasticity. However, this design still cannot completely solve the above technical problems.

[0003] Therefore, it is necessary to improve the above problems to change the status quo. SUMMARY

[0004] The present application provides an infusion device, which is used to solve the problems of the peristaltic pump in the existing infusion equipment, such as the reduction of infusion precision and the reduction of durability.

[0005] The present application provides an infusion device, which comprises:

[0006] A bearing structure is provided with an input port, an output port and a plurality of infusion cavities, and the plurality of infusion cavities are sequentially communicated; the bearing structure is provided with a liquid inlet hole and a liquid outlet hole which are respectively communicated with the infusion cavities, and the liquid inlet hole of one of the infusion cavities is communicated with the liquid outlet hole of the previous infusion cavity; the input port is communicated with the liquid inlet hole of the first infusion cavity, and the output port is communicated with the liquid outlet hole of the last infusion cavity;

[0007] A plurality of groups of infusion assemblies are respectively movably connected with the plurality of infusion cavities, and the infusion assemblies are used to seal or open the liquid inlet hole; and

[0008] A driving assembly comprises a main shaft and a power mechanism, the power mechanism is connected with the bearing structure and is power-connected with the main shaft, the main shaft is rotationally connected with the bearing structure, and the main shaft is sequentially arranged in the plurality of groups of infusion assemblies and is used to drive the plurality of groups of infusion assemblies to move relative to the infusion cavities, so that the end of the plurality of groups of infusion assemblies towards the liquid inlet hole is distributed along a cosine curve.

[0009] According to one of the embodiments of the present application, the infusion assembly comprises a peristaltic structure and an eccentric wheel, the eccentric wheel is connected to the peristaltic structure, and the main shaft is arranged in the eccentric wheel, the peristaltic structure is movably connected to the infusion cavity and used for sealing or opening the liquid inlet hole; the main shaft is used for driving the eccentric wheel to rotate so as to drive the peristaltic structure to move along the axial direction of the infusion cavity.

[0010] According to one of the embodiments of the present application, the peristaltic structure comprises a peristaltic sheet and a plunger, the peristaltic sheet is movably connected to the eccentric wheel, the plunger is detachably connected to the end of the peristaltic sheet, and the outer wall of the plunger is movably arranged and sealingly connected to the infusion cavity, and the plunger is used for sealing or opening the liquid inlet hole.

[0011] According to one of the embodiments of the present application, the plunger comprises a plunger rod and a plunger head, one end of the plunger rod is detachably connected to the peristaltic sheet, the plunger head is connected to the other end of the plunger rod, and the plunger head is a flexible plunger head and is used for sealing or opening the liquid inlet hole.

[0012] According to one of the embodiments of the present application, the peristaltic sheet is provided with a sliding groove, the eccentric wheel is movably arranged in the sliding groove, and the extension direction of the sliding groove is perpendicular to the axial direction of the infusion cavity.

[0013] According to one of the embodiments of the present application, the eccentric wheel is provided with a positioning convex part and a positioning groove on opposite sides, and two adjacent eccentric wheels are connected through the positioning convex part and the positioning groove.

[0014] According to one of the embodiments of the present application, the bearing structure comprises a plunger cover and a plunger seat, the infusion cavity is arranged on the plunger seat, the opening at one end of the infusion cavity is arranged on the end face of the plunger seat, the other end of the infusion cavity is respectively connected to the liquid inlet hole and the liquid outlet hole, and the plunger cover is detachably connected to the plunger seat and covers the opening at the end of the infusion cavity away from the liquid inlet hole.

[0015] According to one of the embodiments of the present application, the input port and the output port are arranged on the plunger cover, and a plurality of liquid inlet holes and a plurality of liquid outlet holes are arranged on the plunger seat.

[0016] According to one of the embodiments of the present application, the power mechanism comprises a driving motor and a gear set, the driving motor is connected to the bearing structure, the gear set is power-connected to the driving motor and the main shaft respectively, and the main shaft is arranged in parallel with the rotating shaft of the driving motor.

[0017] According to one embodiment of the present application, the infusion device further comprises a detection assembly, the detection assembly comprising a detection sheet and a photoelectric sensor, the detection sheet being connected to an end of the main shaft, the photoelectric sensor being connected to the bearing structure, and the photoelectric sensor being inductive cooperation with the detection sheet and used to acquire a rotation signal of the detection sheet.

[0018] The embodiments of the present application have the following beneficial effects:

[0019] When the infusion device of the present embodiment is used, the main shaft is driven to rotate by the power mechanism, and the plurality of infusion assemblies are driven to move along the infusion cavity and are distributed along the cosine curve. In the liquid inlet stage, a negative pressure can be generated in one of the infusion cavities to drive the external liquid in the inlet port to enter the infusion cavity through the liquid inlet hole. Then, the plurality of infusion assemblies are sequentially moved to sequentially drive the external liquid to enter the plurality of infusion cavities. In the liquid outlet stage, the infusion assembly in one of the infusion cavities drives the external liquid in the infusion cavity to enter the next infusion cavity through the liquid outlet hole. In the movement process of the plurality of infusion assemblies, the liquid in the plurality of infusion cavities can be sequentially driven to flow and finally be output from the outlet port.

[0020] In the infusion device of the present embodiment, the driving assembly cooperates with the plurality of infusion assemblies to drive the external liquid to enter the infusion cavity through the inlet port and be discharged through the outlet port, so as to realize the liquid pumping effect. Compared with the liquid pump of the extrusion infusion tube type, the infusion precision and durability of the infusion device can be effectively improved, and the use effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0022] Among them:

[0023] Figure 1 is a sectional view of the infusion device in the embodiments of the present application;

[0024] Figure 2 is Figure 1 is an enlarged view of part A in

[0025] Figure 3 is a schematic view of the internal structure of the infusion device in the embodiments of the present application;

[0026] Figure 4 is a schematic view of the structure of the infusion assembly in the embodiments of the present application;

[0027] Figure 5 is a structural schematic diagram of the infusion assembly in another embodiment of the present application;

[0028] Reference signs:

[0029] 10, infusion device; 100, bearing structure; 110, plunger cover; 111, input port; 112, output port; 120, plunger seat; 121, infusion cavity; 1211, liquid inlet hole; 1212, liquid outlet hole; 130, base; 200, infusion assembly; 210, peristaltic structure; 211, peristaltic sheet; 2111, sliding groove; 212, plunger; 2121, plunger rod; 2122, plunger head; 220, eccentric wheel; 221, positioning protrusion; 300, driving assembly; 310, main shaft; 320, power mechanism; 321, driving motor; 322, gear set; 400, detection assembly; 410, detection sheet; 420, photoelectric sensor. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described below in connection with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0031] Reference Figures 1 to 5 As shown in the drawings, the embodiment of the present application provides an infusion device 10, which comprises a bearing structure 100, an infusion assembly 200 and a driving assembly 300, and the number of the infusion assembly 200 is multiple groups; the bearing structure 100 is provided with an input port 111, an output port 112 and multiple infusion cavities 121, and the multiple infusion cavities 121 are sequentially communicated; the bearing structure 100 is provided with a liquid inlet hole 1211 and a liquid outlet hole 1212 which are respectively communicated with the infusion cavities 121, and the liquid inlet hole 1211 of one of the infusion cavities 121 is communicated with the liquid outlet hole 1212 of the previous infusion cavity 121; the input port 111 is communicated with the liquid inlet hole 1211 of the first infusion cavity 121, and the output port 112 is communicated with the liquid outlet hole 1212 of the last infusion cavity 121; the multiple groups of the infusion assembly 200 are movably connected with the multiple infusion cavities 121 respectively, and the infusion assembly 200 is used for sealing or opening the liquid inlet hole 1211; the driving assembly 300 comprises a main shaft 310 and a power mechanism 320, the power mechanism 320 is connected with the bearing structure 100 and is drivingly connected with the main shaft 310, the main shaft 310 is rotationally connected with the bearing structure 100, and the main shaft 310 is sequentially arranged in the multiple groups of the infusion assembly 200 and is used for driving the infusion assembly 200 to move relative to the infusion cavity 121, so that the end of the multiple groups of the infusion assembly 200 towards the liquid inlet hole 1211 is distributed along a cosine curve.

[0032] When the infusion device 10 is used, the power mechanism 320 drives the main shaft 310 to rotate, and the main shaft 310 drives the plurality of infusion assemblies 200 to move along the infusion cavity 121 and be distributed along the cosine curve. In the liquid inlet stage, a negative pressure can be generated in one of the infusion cavities 121 to drive the external liquid in the input port 111 to enter the infusion cavity 121 through the liquid inlet hole 1211, and then the plurality of infusion assemblies 200 move in turn to make the external liquid enter the plurality of infusion cavities 121 in turn. In the liquid outlet stage, the infusion assembly 200 in one of the infusion cavities 121 drives the liquid in the infusion cavity 121 to enter the next infusion cavity 121 through the liquid outlet hole 1212, and in the movement process of the plurality of infusion assemblies 200, the liquid in the plurality of infusion cavities 121 can be driven to flow in turn and finally be output from the output port 112.

[0033] In the infusion device 10 of the embodiment, the driving assembly 300 cooperates with the plurality of infusion assemblies 200 to drive the external liquid to enter the infusion cavity 121 through the input port 111 and be discharged through the output port 112, so as to realize the liquid pumping effect. Compared with the liquid pump of the extrusion infusion tube type, the infusion precision and durability of the infusion device 10 can be effectively improved, and the use effect is good. It should be noted that in other embodiments, the liquid flow directions of the liquid inlet hole 1211 and the liquid outlet hole 1212 can also be interchanged. For example, in the above-mentioned embodiment, the liquid enters the infusion cavity 121 from the liquid inlet hole 1211 and is output through the liquid outlet hole 1212. In other embodiments, the liquid can enter the infusion cavity 121 from the liquid outlet hole 1212 and be output through the liquid inlet hole 1211. The specific adaptive adjustment can be made according to the actual application mode of the infusion device 10, which is not uniquely limited here.

[0034] Specifically, as shown in the embodiment shown in Figure 1 Each of the infusion cavities 121 contains a group of infusion assemblies 200, and when the main shaft 310 rotates, the end of the plurality of infusion assemblies 200 towards the liquid inlet hole 1211 and the liquid outlet hole 1212 is always on the same cosine curve. When the power mechanism 320 drives the main shaft 310 to rotate at a constant speed, the liquid flow rates in the input port 111 and the output port 112 of the infusion device 10 satisfy the following relationship:

[0035] q(t) = A cos 2 (ωt) + B cos(ωt) + C

[0036] According to the above formula, q(t) is a function of time t, A, B and C are constants, and the sizes of A, B and C are adaptively changed according to the actual size of the infusion assembly 200 to change the shape and amplitude of the function q(t).

[0037] Referring to Figure 2As shown, in an embodiment, the external liquid entering the input port 111 is driven by the movement of the infusion assembly 200 to move along the conveying path in the drawing, for example, defining the first infusion assembly, the second infusion assembly and the third infusion assembly from left to right in the drawing, and the bottom height of the first infusion assembly, the second infusion assembly and the third infusion assembly decreases in turn, and the first infusion assembly, the second infusion assembly and the third infusion assembly rise in turn under the driving action of the driving assembly 300, at this time the liquid enters the corresponding infusion cavity 121 of the first infusion assembly, the second infusion assembly and the third infusion assembly in turn along the conveying path, and the above movement is the liquid inlet state; when the first infusion assembly passes the top point of the cosine curve (i.e. after the movement of the first infusion assembly exceeds the highest point), the first infusion assembly, the second infusion assembly and the third infusion assembly descend in turn after passing the highest point, at this time the first infusion assembly, the second infusion assembly and the third infusion assembly apply pressure to the infusion cavity 121 in turn, until the first infusion assembly closes the liquid inlet hole 1211 of the infusion cavity 121, at this time, due to the volume reduction of the three infusion cavities 121, the liquid in the infusion cavity 121 is conveyed in the direction of the first infusion assembly, the second infusion assembly and the third infusion assembly under the action of pressure and can be discharged through the output port 112.

[0038] Specifically, referring to Figure 1 and Figure 3 As shown, the infusion assembly 200 includes a peristaltic structure 210 and an eccentric wheel 220, the eccentric wheel 220 is connected to the peristaltic structure 210, and the main shaft 310 is arranged in the eccentric wheel 220, the peristaltic structure 210 is movably connected with the infusion cavity 121 and is used for sealing or opening the liquid inlet hole 1211; the main shaft 310 is used for driving the eccentric wheel 220 to rotate to drive the peristaltic structure 210 to move along the axial direction of the infusion cavity 121.

[0039] In the embodiment, the eccentric wheel 220 is connected with the main shaft 310, and a plurality of eccentric wheels 220 are in different phases, when the power mechanism 320 starts and drives the main shaft 310 to rotate, the plurality of eccentric wheels 220 can drive the peristaltic structure 210 to move along the cosine curve type state; when the peristaltic structure 210 moves to the bottom of the infusion cavity 121, the peristaltic structure 210 can seal the liquid inlet hole 1211, when the liquid inlet hole 1211 of the previous infusion cavity 121 is closed, the external liquid can be conveyed to the next infusion cavity 121; when the liquid outlet hole 1212 of the previous infusion cavity 121 is opened and the infusion assembly 200 continues to move, the external liquid can enter the infusion cavity 121 in turn and be conveyed to the output port 112.

[0040] Further, referring to Figure 3 and Figure 4As shown, the peristaltic structure 210 comprises a peristaltic sheet 211 and a plunger 212, the peristaltic sheet 211 is movably connected to the eccentric wheel 220, the plunger 212 is detachably connected to the end of the peristaltic sheet 211, and the outer wall of the plunger 212 is sealingly and movably connected to the infusion cavity 121, and the plunger 212 is used for sealing or opening the liquid inlet hole 1211.

[0041] Therefore, the plunger 212 in the embodiment can be a rubber plunger or a silica gel plunger, which can be deformed to seal the liquid inlet hole 1211 when the plunger 212 moves to the bottom of the infusion cavity 121, and the outer wall of the plunger 212 can seal the inner wall of the infusion cavity 121 during the movement of the infusion assembly 200, so as to generate negative pressure (suck external liquid) and pressure (discharge external liquid) in the infusion cavity 121. When the eccentric wheel 220 rotates, the peristaltic sheet 211 can be driven to move the plunger 212. Of course, in some embodiments, the plunger 212 can be integrally formed with the peristaltic sheet 211, so that the overall strength is improved, but the flexibility is reduced, and the peristaltic sheet 211 or the plunger 212 cannot be separately disassembled and maintained.

[0042] Specifically, referring to Figure 4 As shown, the plunger 212 comprises a plunger rod 2121 and a plunger head 2122, one end of the plunger rod 2121 is detachably connected to the peristaltic sheet 211, and the plunger head 2122 is connected to the other end of the plunger rod 2121, and the plunger head 2122 is a flexible plunger head 2122 and is used for sealing or opening the liquid inlet hole 1211.

[0043] In the embodiment, the plunger head 2122 can be a rubber plunger head or a silica gel plunger head; by adopting the detachable connection mode to combine the peristaltic sheet 211, the plunger rod 2121 and the plunger head 2122, when the plunger 212 is worn, only the plunger head 2122 needs to be replaced, without replacing the overall structure of the plunger 212, which not only improves the disassembly and assembly convenience, but also reduces the maintenance cost. Of course, in some embodiments, the plunger rod 2121 and the peristaltic sheet 211 can be an integral structure, and the plunger head 2122 is detachably connected to the plunger rod 2121, which can improve the connection strength between the plunger rod 2121 and the peristaltic sheet 211, but when there is a machining error between the two, it is easy to interfere with the movement, and the plunger rod 2121 or the peristaltic sheet 211 cannot be separately disassembled and maintained.

[0044] Referring to Figure 5 As shown, in another embodiment, the peristaltic sheet 211 is provided with a sliding groove 2111, and the eccentric wheel 220 is movably accommodated in the sliding groove 2111, and the extension direction of the sliding groove 2111 is perpendicular to the axial direction of the infusion cavity 121.

[0045] Thus, when the eccentric wheel 220 rotates, the rotation of the eccentric wheel 220 can be converted into the vertical movement of the plunger 212 through the sliding fit between the eccentric wheel 220 and the sliding groove 2111.

[0046] Further, referring to Figure 4 As shown, the opposite sides of the eccentric wheel 220 are provided with a positioning protrusion 221 and a positioning groove, and the adjacent two eccentric wheels 220 are connected through the positioning protrusion 221 and the positioning groove.

[0047] In this embodiment, by providing the positioning protrusion 221 and the positioning groove between the adjacent eccentric wheels 220, the transmission reliability between the multiple groups of infusion assemblies 200 can be improved, and such an arrangement can reduce the torsional load of the main shaft 310, thereby improving the durability of the main shaft 310 and the infusion precision of the infusion device 10.

[0048] Specifically, referring to Figure 1 and Figure 3 As shown, the carrier structure 100 includes a plunger cover 110 and a plunger seat 120, an infusion cavity 121 is arranged on the plunger seat 120, and the opening at one end of the infusion cavity 121 is located on the end face of the plunger seat 120. The other end of the infusion cavity 121 is respectively communicated with the liquid inlet hole 1211 and the liquid outlet hole 1212. The plunger cover 110 is detachably connected to the plunger seat 120 and covers the opening at the end of the infusion cavity 121 away from the liquid inlet hole 1211. The input port 111, the output port 112, the plurality of liquid inlet holes 1211, and the plurality of liquid outlet holes 1212 are arranged on the plunger cover 110.

[0049] When assembling the infusion device 10 of the embodiment, first, the infusion assembly 200 is assembled in the infusion cavity 121 from the opening of the infusion cavity 121. At this time, the plunger 212 is movably connected to the infusion cavity 121 and is in interference fit with the infusion cavity 121 to achieve sealing. Then, the plunger cover 110 is covered on the plunger seat 120 to make the liquid inlet hole 1211 and the liquid outlet hole 1212 communicate with the infusion cavity 121, and the assembly of the infusion device 10 is completed. The overall structure is simple and convenient to assemble. Specifically, as Figure 3 shown in the embodiment, the plunger 212 is cylindrical. In other embodiments, the plunger 212 can also be annular, elliptical, or other shapes, which are specifically adapted according to the infusion cavity 121.

[0050] In addition, by arranging the input port 111 and the output port 112 on the plunger cover 110 and arranging the plurality of liquid inlet holes 1211 and the plurality of liquid outlet holes 1212 on the plunger seat 120, the manufacturing cost of the plunger seat 120 can be reduced, and the assembly and later maintenance of the plunger cover 110 are facilitated.

[0051] Specifically, referring to Figure 3As shown, the power mechanism 320 comprises a driving motor 321 connected to the bearing structure 100 and a gear set 322 power-connected to the driving motor 321 and the main shaft 310 respectively, and the main shaft 310 is arranged in parallel with the rotation shaft of the driving motor 321.

[0052] In the embodiment, the bearing structure 100 further comprises a base 130 detachably connected to the plunger seat 120, and the driving motor 321 can be fixed to the base 130. In the assembly process, the base 130 and the driving motor 321 can be connected to form a module structure first, and then connected with the plunger seat 120, so as to improve the assembly convenience of the infusion device 10.

[0053] The gear set 322 is arranged to realize the transmission between the driving motor 321 and the main shaft 310, so that the driving motor 321 can be variable torque to reduce the compound of the driving motor 321. At the same time, by arranging the main shaft 310 in parallel with the driving motor 321, the overall structure of the infusion device 10 can be compact, and the infusion device 10 can be combined with external components to optimize the occupied space of the infusion device 10.

[0054] Further, the infusion device 10 further comprises a detection assembly 400, the detection assembly 400 comprises a detection sheet 410 and a photoelectric sensor 420, the detection sheet 410 is connected to the end of the main shaft 310, and the photoelectric sensor 420 is connected to the bearing structure 100, and the photoelectric sensor 420 is inductive cooperation with the detection sheet 410 and is used to obtain the rotation signal of the detection sheet 410.

[0055] In the embodiment, the detection sheet 410 and the photoelectric sensor 420 are arranged on the main shaft 310, and the detection sheet 410 and the photoelectric sensor 420 are inductive cooperation, for example, the detection sheet 410 is arranged on the end of the main shaft 310, and the photoelectric sensor 420 is arranged on the bearing structure 100. Figure 3As shown, when the detection sheet 410 rotates, the photoelectric sensor 420 can acquire a rotation signal of the detection sheet 410 to monitor the infusion state of the infusion device 10; specifically, the infusion device 10 further comprises a control module, or is connected with an external control module, the control module can be connected with the driving motor 321 and the photoelectric sensor 420, at this time, the detection assembly 400 can be used to acquire the rotation speed signal of the main shaft 310, and the control module can control the rotation speed of the driving motor 321 according to the built-in program or control instruction, so as to adjust and control the infusion speed, infusion amount and other liquid conveying signals of the infusion device 10. Specifically, the control module can be, but is not limited to, various PLCs (Programmable Logic Controller), STM32 (STM32 microcontroller, 32-bit microcontroller with ARM Cortex-M core), single-chip microcomputers, FPGAs (Field Programmable Gate Array), ARMs (Advanced RISC Machine), etc., which are arranged inside the equipment and used for directly controlling the equipment and acquiring the running state of the equipment.

[0056] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0057] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0058] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0059] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0060] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An infusion device, characterized by The application relates to a bearing structure, which is provided with an input port, an output port and a plurality of infusion cavities, the plurality of infusion cavities are sequentially communicated, the bearing structure is provided with liquid inlet holes and liquid outlet holes which are respectively communicated with the infusion cavities, the liquid inlet hole of one of the infusion cavities is communicated with the liquid outlet hole of the previous infusion cavity, the input port is communicated with the liquid inlet hole of the first infusion cavity, the output port is communicated with the liquid outlet hole of the last infusion cavity, a plurality of infusion assemblies are respectively and sealingly connected with the inner walls of the plurality of infusion cavities and are movably arranged, the infusion assemblies are used for sealing or opening the liquid inlet holes, a driving assembly is provided, the driving assembly comprises a main shaft and a power mechanism, the power mechanism is connected with the bearing structure and is power-connected with the main shaft, the main shaft is rotationally connected with the bearing structure, the main shaft is sequentially arranged in the plurality of infusion assemblies and is used for driving the plurality of infusion assemblies to move relative to the infusion cavities, so that the plurality of infusion assemblies are distributed along a cosine curve towards the end of the liquid inlet hole, the bearing structure further comprises a base, and the power mechanism is fixed on the base. The infusion assembly comprises a peristaltic structure and an eccentric wheel, the eccentric wheel is connected with the peristaltic structure, the main shaft is arranged in the eccentric wheel, the peristaltic structure is sealingly connected with the inner wall of the infusion cavity and is movably arranged, and the peristaltic structure is used for sealing or opening the liquid inlet hole. The main shaft is used for driving the eccentric wheel to rotate so as to drive the peristaltic structure to move along the axial direction of the infusion cavity. The peristaltic structure comprises a peristaltic sheet and a plunger, the peristaltic sheet is movably connected with the eccentric wheel, the plunger is detachably connected with the end of the peristaltic sheet, the outer wall of the plunger is sealingly connected with the inner wall of the infusion cavity and is movably arranged, and the plunger is used for sealing or opening the liquid inlet hole. The plunger comprises a plug rod and a plug head, one end of the plug rod is detachably connected with the peristaltic sheet, the plug head is connected with the other end of the plug rod, the plug head is a flexible plug head and is used for sealing or opening the liquid inlet hole. The peristaltic sheet is provided with a sliding groove, the eccentric wheel is movably arranged in the sliding groove, and the extension direction of the sliding groove is perpendicular to the axial direction of the infusion cavity. The eccentric wheel is provided with a positioning convex part and a positioning groove on opposite sides, and two adjacent eccentric wheels are clamped and matched through the positioning convex part and the positioning groove.

2. The infusion device of claim 1, wherein The bearing structure comprises a plunger cover and a plunger seat, the infusion cavity is arranged on the plunger seat, the opening of one end of the infusion cavity is arranged on the end face of the plunger seat, the other end of the infusion cavity is respectively communicated with the liquid inlet hole and the liquid outlet hole, the plunger cover is detachably connected with the plunger seat and covers the opening of one end of the infusion cavity away from the liquid inlet hole. The input port and the output port are arranged on the plunger cover, and the plurality of liquid inlet holes and the plurality of liquid outlet holes are respectively arranged on the plunger seat.

3. The infusion device of claim 2, wherein The power mechanism comprises a driving motor and a gear set, the driving motor is fixed on the base, the gear set is power-connected with the driving motor and the main shaft, and the main shaft is arranged in parallel with the rotating shaft of the driving motor.

4. The infusion device of claim 3, wherein ​ 5. The infusion device of claim 3, wherein ​ 6. Infusion device according to any one of claims 2 to 5, characterized in that ​ 7. The infusion device of any one of claims 1-5, wherein, ​ 8. The infusion device of claim 7, wherein ​ 9. The infusion device of any one of claims 1-5, wherein, ​ 10. The infusion device of any one of claims 1-5, wherein, The infusion device further comprises a detection assembly, which comprises a detection sheet and a photoelectric sensor, the detection sheet is connected to the end of the main shaft, the photoelectric sensor is connected to the bearing structure, and the photoelectric sensor is inductive cooperation with the detection sheet and is used for acquiring the rotation signal of the detection sheet.

Images