Solution preparation and injection system based on a reciprocating drive device

Abstract

The present invention provides a solution preparation and injection system based on a reciprocating drive device, comprising a liquid storage device, a first pipeline, a first valve, a second pipeline, a second valve, a control device and a liquid preparation device; a fourth accommodation space is provided inside the liquid preparation device; the fourth accommodation space is connected to the liquid storage device through the first pipeline; the fluid in the fourth accommodation space flows out through the second pipeline; the first valve and the second valve are respectively installed on the first pipeline and the second pipeline, and the control device is electrically connected to the first valve and the second valve respectively; the number of the liquid preparation devices can be set according to the types of fluids required in solution preparation, and an injection head is provided on the second pipeline. In the present invention, the entire preparation system is hermetically connected through pipelines, without splashing and volatilization of the liquid medicine. During the injection process of the liquid medicine, no electric energy supply is required except for the switch, which is safe and reliable, noiseless, and widely applicable.

Description

Technical Field

[0001] The present invention relates to the technical field of solution preparation, and particularly to a solution preparation and injection system based on a reciprocating drive device. Background Art

[0002] Injection refers to injecting a liquid or gas into the human body with the aid of a medical device such as a syringe for the purpose of diagnosis, treatment, and prevention of diseases. Different from taking medicine, the medicinal liquid can quickly reach the blood and take effect after injection. However, in case of misuse, the drug is not easily removed, there is pain during injection, and local adverse reactions sometimes occur at the injection site.

[0003] In the existing medical technology field, many patients need to inject drugs regularly to maintain normal life. Therefore, patients need to spend a lot of time going to the hospital for injection regularly. At the same time, medical staff also need to spend a lot of time manually preparing drugs regularly. Among them, the labor intensity is high, the efficiency is low, and it is easy to make operation mistakes during the drug preparation process, which not only wastes the time of patients and medical staff, but also has safety hazards; especially for the preparation of many medicinal liquids, the requirements are relatively strict, and the preparation ratios of various medicinal liquids are strictly required, so it brings greater challenges to manual preparation of medicinal liquids.

[0004] Patent document CN209154758U discloses an intelligent injection system. The blood glucose value of the user is obtained by a continuous blood glucose monitor and sent to a single-chip microcomputer through a wireless connection module. The single-chip microcomputer sends the blood glucose value to the liquid crystal display screen for display, so that the user can know his current blood glucose value in real time. When the blood glucose value is higher than the normal level, an instruction is sent to the single-chip microcomputer through a key. The single-chip microcomputer receives the instruction of the key and controls the first motor drive circuit to drive the double-tube injection pump to inject insulin. When the blood glucose value is lower than the normal level, an instruction is sent to the single-chip microcomputer through a key. The single-chip microcomputer receives the instruction of the key and controls the second motor drive circuit to drive the double-tube injection pump to inject glucagon, so as to be able to monitor and display the blood glucose value of diabetic patients in real time, and inject insulin or glucagon immediately through a key to maintain the blood glucose balance in the body and ensure the safety of diabetic patients. However, this design cannot realize the situation of preparing multiple medicinal liquids, and is completely based on electric energy, with noise. Summary of the Invention

[0005] Aiming at the defects in the prior art, the purpose of the present invention is to provide a solution preparation and injection system based on a reciprocating drive device.

[0006] According to a solution preparation and injection system based on a reciprocating drive device provided by the present invention, it includes a liquid storage device, a first pipeline 1, a first valve 5, a second pipeline 6, a second valve 7, a control device, and a liquid preparation device;

[0007] The interior of the liquid dispensing device is provided with a fourth accommodation space 35;

[0008] The fourth accommodation space 35 is connected to the liquid storage device through a first pipeline 1;

[0009] The fluid in the fourth accommodation space 35 flows out through a second pipeline 6;

[0010] The first valve 5 and the second valve 7 are respectively installed on the first pipeline 1 and the second pipeline 6, and the control device is electrically connected to the first valve 5 and the second valve 7 respectively;

[0011] The number of the liquid dispensing devices can be set according to the types of fluids required in the solution preparation, and the number of the liquid storage devices matches the number of the liquid dispensing devices.

[0012] Preferably, a fluid actuator and a power actuator are provided in the liquid dispensing device, and a second driving body 8 is provided in the power actuator, adopting any one of the following structural forms:

[0013] - including a linkage rod 9, the linkage rod 9 is provided with a first connection end 33 and a second connection end 36, the first connection end 33 extends into the interior of the fluid actuator and forms a fourth accommodation space 35 with the fluid actuator;

[0014] The second connection end 36 extends into the interior of the power actuator and forms a fifth accommodation space 37 with the power actuator, the fifth accommodation space 37 is a closed space, and the second driving body 8 is installed in the fifth accommodation space 37;

[0015] The second driving body 8 is electrically connected to the control device;

[0016] Driven by the second driving body 8, the linkage rod 9 moves in a direction away from the fifth accommodation space 37;

[0017] The fifth accommodation space 37 is a closed space, the linkage rod 9 is communicated with the outside atmosphere, and when the driving of the second driving body 8 is released, under the action of the outside atmospheric pressure, the linkage rod 9 moves in a direction close to the fourth accommodation space 35, and at this time the volume of the fourth accommodation space 35 becomes smaller.

[0018] - One end of the power actuator extends into the interior of the fluid actuator and forms a sixth accommodation space 38 with the fluid actuator, and the other end of the power actuator is a free end;

[0019] The power actuator includes a fixed rod 39 and a moving housing 34. The fixed rod 39 is installed inside the moving housing 34, and a first accommodation space 3 is formed between the fixed rod 39 and the moving housing 34. The second driver 8 is installed in the first accommodation space 3;

[0020] The second driver 8 is electrically connected to the control device;

[0021] Driven by the second driver 8, the moving housing 34 moves along the fixed rod 39 in the direction in which the volume of the first accommodation space 3 increases;

[0022] The first accommodation space 3 is a closed space. The fixed rod 39 is connected to the outside atmosphere through the moving housing 34. When the drive of the second driver 8 is released, under the action of the outside atmospheric pressure, the moving housing 34 moves along the fixed rod 39 in the direction in which the volume of the first accommodation space 3 decreases. At this time, the volume of the sixth accommodation space 38 decreases.

[0023] Preferably, it further includes a liquid replenishing device and a third valve 13;

[0024] The third valve 13 is installed on the first pipeline 1;

[0025] The liquid replenishing device is installed on the first pipeline 1 and is arranged between the first valve 5 and the third valve 13;

[0026] The interior of the liquid replenishing device is provided with a liquid replenishing device housing 24 and a first driving rod 2. The interior of the liquid replenishing device housing 24 is divided by the first driving rod 2 into a second accommodation space 30 and a third accommodation space 31;

[0027] Both the second accommodation space 30 and the third accommodation space 31 are closed spaces. A first driver 4 is arranged in the second accommodation space 30;

[0028] The third accommodation space 31 is respectively connected to the fourth accommodation space 35 and the liquid storage device through the first pipeline 1; or

[0029] The third accommodation space 31 is respectively connected to the sixth accommodation space 38 and the liquid storage device through the first pipeline 1;

[0030] The first driver 4 is electrically connected to the control device;

[0031] When the first driver 4 drives the first driving rod 2 to move close to the third accommodation space 31, the first valve 5 is opened, and the fluid in the third accommodation space 31 enters the fourth accommodation space 35 through the first pipeline 1;

[0032] When the driving of the first driver 4 is released, the third valve 13 is opened and the first valve 5 is closed. Under the action of the external atmospheric pressure, the first driving rod 2 moves away from the third accommodation space 31, thereby sucking the fluid in the liquid storage device into the third accommodation space 31.

[0033] Preferably, the first valve 5, the second valve 7, and the third valve 13 respectively adopt any one of the following structural forms:

[0034] - Comprising a first control rod 10, a second control rod 11, a control mechanism 12, and a joint shaft 14. The first control rod 10 and the second control rod 11 are arranged crosswise, and the first control rod 10 and the second control rod 11 can rotate relative to each other around the joint shaft 14 under the drive of the control mechanism 12;

[0035] When the control mechanism 12 drives one end of the first control rod 10 and the second control rod 11 to move away from each other, the other ends of the first control rod 10 and the second control rod 11 move away from each other. At this time, the first valve 5 or the second valve 7 is shown to be open;

[0036] When the control mechanism 12 drives one end of the first control rod 10 and the second control rod 11 to move closer to each other, the other ends of the first control rod 10 and the second control rod 11 move closer to each other. At this time, the first valve 5 or the second valve 7 is shown to be closed;

[0037] - Comprising a control mechanism 12, a mounting carrier 15, a control arm 16, a support column 17, and a telescopic mechanism 18;

[0038] The control arm 16 includes a control end and a driving end;

[0039] One end of the control mechanism 12, one end of the support column 17, and one end of the telescopic mechanism 18 are respectively mounted on the mounting carrier 15, and the control arm 16 is rotatably mounted on the other end of the support column 17;

[0040] The driving end of the control arm 16 rotates around the other end of the support column 17 under the drive of the control mechanism 12, so that the control end of the control arm 16 moves, realizing the opening of the first valve 5 and / or the second valve 7;

[0041] When the control mechanism 12 moves away from the driving end, the telescopic mechanism 18 can drive the driving end to realize the closing of the first valve 5 and / or the second valve 7;

[0042] - Comprising a first bladder 41, a second bladder 42, and a first magnetic field control body;

[0043] The first bladder 41 and the second bladder 42 are respectively arranged on both sides along the width direction inside the first pipeline 1 and the second pipeline 6, and the first bladder 41 and the second bladder 42 are filled with a switching fluid;

[0044] When the first magnetic field control body does not apply a magnetic field, there is a first gap between the first bladder 41 and the second bladder 42. At this time, the first valve 5 and / or the second valve 7 is open;

[0045] When the first magnetic field control body applies a magnetic field, the first bladder 41 and the second bladder 42 deform and approach each other, thereby blocking the first pipeline 1 and / or the second pipeline 6 to achieve the closing of the first valve 5 and / or the second valve 7;

[0046] - Comprising a third bladder 44 and a second magnetic field control body, the third bladder 44 is arranged inside the first pipeline 1 and the second pipeline 6, and the third bladder 44 is filled with a switching fluid;

[0047] When the second magnetic field control body does not apply a magnetic field, there is a second gap between the third bladder 44 and the inner wall of the first pipeline 1 or the second pipeline 6. At this time, the first valve 5 and / or the second valve 7 is open;

[0048] When the second magnetic field control body applies a magnetic field, the third bladder 44 deforms to block the first pipeline 1 and / or the second pipeline 6 to achieve the closing of the first valve 5 and / or the second valve 7.

[0049] Preferably, the control mechanism 12 includes any one of the following structural forms:

[0050] - A piezoelectric ceramic structure;

[0051] - A magnetostrictive structure;

[0052] - A shape memory alloy actuator;

[0053] - A hydraulic or pneumatic actuator;

[0054] - A magnetorheological fluid actuator;

[0055] - An electrorheological fluid actuator;

[0056] - A thermal expansion actuator;

[0057] - An electromagnetic actuator;

[0058] - An electromagnetic permanent magnet actuator.

[0059] Preferably, the first actuator 4 or the second actuator 8 respectively adopts any one of the following drive structures:

[0060] - A motor;

[0061] - A phase change actuator;

[0062] - A smart material structure;

[0063] - Pneumatic drive body;

[0064] - Hydraulic drive body.

[0065] Preferably, the liquid replenishing device housing 24 adopts an annular structure;

[0066] An annular channel is arranged inside the annular structure, a plug 22 is fixed inside the annular channel, and the first drive rod 2 and the plug 22 divide the annular channel into a second accommodation space 30 and a third accommodation space 31.

[0067] Preferably, it further includes a mixing chamber 40;

[0068] The mixing chamber 40 is respectively connected to the fourth accommodation space 35 and the third accommodation space 31 through the first pipeline 1; or

[0069] The mixing chamber 40 is respectively connected to the sixth accommodation space 38 and the third accommodation space 31 through the first pipeline 1.

[0070] Preferably, it further includes an injection device, the injection device includes an injection head 25, one end of the injection head 25 is connected to the second pipeline 6, and the other end of the injection head 25 is a free end;

[0071] The number of the injection heads 25 is one or more.

[0072] Preferably, it further includes a liquid preparation tank 20 and a finished product tank 21;

[0073] The liquid preparation tank 20 is respectively connected to the second pipeline 6 and the finished product tank 21.

[0074] Compared with the prior art, the present invention has the following beneficial effects:

[0075] 1. The present invention realizes the automatic preparation of solutions based on a reciprocating drive device and a control device, and the entire preparation system is hermetically connected through pipelines, without splashing and volatilization of liquid medicine. During the process of the liquid medicine flowing from the fourth accommodation space 3 to the liquid preparation tank, no electric energy supply is required except for the switch, which is safe, reliable, precisely controllable, noiseless, and can realize the preparation of multiple kinds of liquid medicines at the same time. Compared with the prior art, it has a simple structure, convenient operation, and wide application.

[0076] 2. This device can be applied to the automatic injection system of the human body or animal body, complete the automatic preparation of solutions and the injection of solutions, with the preparation and injection being carried out synchronously, small in volume, high in precision, suitable for patients or animals to carry, with great portability, and can be installed or worn on the human body or animal body, with strong practicability.

[0077] 3. In the present invention, the first valve and the second valve can adopt precision switches to control the flow of a small amount of fluid through the valves, thereby achieving large-stroke output and precise displacement of the first transmission rod. The control precision is high, and it can be applied to precision instruments.

[0078] 4. The present invention can adopt various driving methods such as shape memory alloy structures and motors, and can be reasonably selected according to different application scenarios.

[0079] 5. By setting multiple liquid dispensing devices and multiple cooperating liquid storage devices, the present invention can achieve the online preparation of multiple solutions. By presetting the injection dose, the safe preparation of a single determined amount can be achieved, which is safe and reliable. Moreover, through the control device, automatic preparation and automatic injection can be realized, greatly reducing the labor intensity of patients during the treatment process.

[0080] 6. In the present invention, the first valve, the second valve, and the third valve can adopt a fluid (switch fluid) that specifically functions as a switch to realize the opening and closing of the valves, which is convenient to operate and has a wide range of applications.

[0081] 7. In the present invention, the liquid medicine can be added to the liquid preparation tank from the fourth accommodation space by generating a pressure difference between the fifth accommodation space and the external atmosphere, reducing energy consumption. At the same time, the solution preparation can be realized by the method of active pressure application, and it can be reasonably selected according to different application scenarios, with strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present invention will become more apparent:

[0083] Figure 1 is a schematic structural diagram of the present invention;

[0084] Figure 2 is a schematic structural diagram of the present invention adopting a liquid replenishing device

[0085] Figure 3 is a schematic structural diagram of the first valve and the second valve in the embodiment of the present invention when they are closed;

[0086] Figure 4 is a schematic structural diagram of the first valve and the second valve in the embodiment of the present invention when they are opened;

[0087] Figure 5 is a schematic structural diagram of the first valve and the second valve in the embodiment;

[0088] Figure 6 is a schematic structural diagram of the amplification of the liquid transmission displacement in the control mechanism;

[0089] Figure 7 is a schematic structural diagram of the reduction of the liquid transmission displacement in the control mechanism;

[0090] Figure 8 It is a schematic structural diagram before and after the phase change of the phase change material in the first driver;

[0091] Figure 9 It is a schematic structural diagram when the liquid replenishing device adopts an annular structure;

[0092] Figure 10 It is a schematic structural diagram when the first valve or the second valve adopts multiple capsules to open the valve;

[0093] Figure 11 It is a schematic structural diagram when the first valve or the second valve adopts multiple capsules to close the valve;

[0094] Figure 12 It is a schematic structural diagram when the first valve or the second valve adopts one capsule to open the valve;

[0095] Figure 13 It is a schematic structural diagram when the first valve or the second valve adopts one capsule to close the valve;

[0096] Figure 14 It is a schematic structural diagram of the present invention after installing the liquid distribution tank and the finished product tank;

[0097] Figure 15 It is a schematic structural diagram when the injection head of the present invention is installed on the second pipeline;

[0098] Figure 16 It is a schematic structural diagram when the injection head of the present invention is installed on the liquid distribution tank;

[0099] Figure 17 It is a schematic structural diagram of an embodiment of the present invention;

[0100] Figure 18 It is a schematic structural diagram when the present invention is installed with an installation shell;

[0101] Figure 19 It is a schematic structural diagram when the present invention is installed on a human arm;

[0102] Figure 20 It is a schematic structural diagram when the present invention is installed on the front chest or waist of a human body;

[0103] Figure 21 It is a schematic structural diagram of the mixing chamber.

[0104] As shown in the figure:

[0105] Specific embodiments

[0106] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0107] The present invention provides a solution preparation and injection system based on a reciprocating drive device, as Figure 1 shown, which includes a liquid storage device, a first pipeline 1, a first valve 5, a second pipeline 6, a second valve 7, a control device, and a liquid preparation device; a fourth accommodation space 35 is provided inside the liquid preparation device; the fourth accommodation space 35 is connected to the liquid storage device through the first pipeline 1; the fluid in the fourth accommodation space 35 flows out through the second pipeline 6; the first valve 5 and the second valve 7 are respectively installed on the first pipeline 1 and the second pipeline 6, and the control device is electrically connected to the first valve 5 and the second valve 7 respectively; the number of the liquid preparation devices can be set according to the types of fluids required in the solution preparation, and the number of the liquid storage devices matches the number of the liquid preparation devices.

[0108] Furthermore, as Figure 1 shown, it further includes an injection device, the injection device includes an injection head 25, one end of the injection head 25 is connected to the second pipeline 6, and the other end of the injection head 25 is a free end; the number of the injection heads 25 is one or more. When the number of the injection heads 25 is multiple, the multiple injection heads 25 can be arranged in a parallel and sequential planar arrangement structure, such as Figure 15 the single-row structure form in Figure 15 or the multiple injection heads 25 can be arranged in a regular array arrangement structure, such as

[0109] the array structure form in

[0110] the array structure form in, or can also be arranged in an irregular three-dimensional arrangement according to the injection site, and specifically needs to be designed according to the actual application scenario to meet the actual needs. Under a stable negative pressure condition, through precise control of the valves, the device can achieve the effect of slow and uniform injection of the liquid medicine for a long time (sustained release effect) through multiple injection heads 25. In a preferred example, the number of the injection heads 25 is 64, and the 64 injection heads 25 are arranged in an 8-row and 8-column cuboid structure array arrangement. Furthermore, in addition to being directly installed on the second pipeline 6 for use, the injection head 25 can also be installed on the liquid preparation tank 20 for use or the injection head 25 can be installed on the finished product tank 21 for use, and specific selection should be made reasonably according to the actual situation.

[0110] The injection device in the present invention can achieve the effect of gravity - free injection through the pressure difference formed by the fifth accommodation space 37 and the external atmospheric pressure, overcoming the traditional gravity drip mode. In practical applications, this device can be designed into a compact structure, such as Figure 17 shown, achieving the effect of a small volume, and being installed in the installation housing 26, such as Figure 18 shown, the injection end of the injection head 25 extends to the outside of the installation housing 26. During use, it can be worn on the body according to actual situations, or can be installed on the human body according to the injection site, such as Figure 19 、 Figure 20 shown, Figure 19 is installed on the human arm, Figure 20 is installed on the front chest of the human body or on the abdomen of the human body or any part of the human body that needs to be installed, achieving the effect of full follow - up on the human body.

[0111] Specifically, as Figure 14 、 Figure 16 shown, it further includes a liquid preparation tank (20) and a finished product tank (21). The liquid preparation tank (20) is respectively connected to the second pipeline (6) and the finished product tank (21). According to the characteristics of different liquid medicines, the liquid medicine can be first added to the liquid preparation tank (20) for mixing, and then pressed into the finished product tank (21) for use. Passing through the finished product tank (21) can make the liquid medicine more uniform and meet the requirements of special solutions.

[0112] Specifically, as Figure 14 shown, the injection device is installed on the finished product tank 21, and the finished product tank 21 is connected to the liquid preparation tank 20 through a pipeline; the control device can respectively control the first valve 5, the second valve 7, the liquid preparation device, and the injection device according to the set program to complete the preparation and injection operations of the solution. In practical applications, it can be applied to a portable injection device. For patients who often need injections, this system can be used to preset the injection dose and injection time to complete the automatic preparation of the liquid medicine, and then complete the automatic injection, solving the trouble of patients frequently going to the hospital.

[0113] Specifically, as Figure 1As shown, a fluid actuator and a power actuator are provided in the liquid dispensing device. A second driver 8 is provided in the power actuator. The liquid dispensing device can adopt various structural forms. In a preferred example, it includes a linkage rod 9. A first connection end 33 and a second connection end 36 are provided on the linkage rod 9. The first connection end 33 extends into the interior of the fluid actuator and forms a fourth accommodation space 35 with the fluid actuator; the second connection end 36 extends into the interior of the power actuator and forms a fifth accommodation space 37 with the power actuator. The fifth accommodation space 37 is a sealed space, and the second driver 8 is installed in the fifth accommodation space 37; the second driver 8 is electrically connected to the control device; driven by the second driver 8, the linkage rod 9 moves in a direction away from the fifth accommodation space 37; the fifth accommodation space 37 is a sealed space, and the linkage rod 9 is connected to the outside atmosphere. When the driving of the second driver 8 is released, under the action of the outside atmospheric pressure, the linkage rod 9 moves in a direction close to the fourth accommodation space 35, and at this time the volume of the fourth accommodation space 35 becomes smaller.

[0114] Further, as Figure 1 shown, in a preferred example of the liquid dispensing device, the second driver 8 uses a shape memory alloy to realize the movement of the linkage rod 9, and drives the pistons at both ends to act synchronously through the linkage rod 9. Under the action of the outside atmospheric pressure, the linkage rod 9 can move in a direction away from the fourth accommodation space 35. However, the driving device used at this time, such as the shape memory alloy, is a combined method, which can be a shape memory alloy that shrinks when heated, or can also be driven by cooling and shrinking.

[0115] Further, in a variant, one end of the power actuator extends into the interior of the fluid actuator and forms a sixth accommodation space 38 with the fluid actuator, and the other end of the power actuator is a free end; the power actuator includes a fixed rod 39 and a moving housing 34. The fixed rod 39 is installed inside the moving housing 34, and a first accommodation space 3 is formed between the fixed rod 39 and the moving housing 34. The second driver 8 is installed in the first accommodation space 3; the second driver 8 is electrically connected to the control device; driven by the second driver 8, the moving housing 34 moves along the fixed rod 39 in a direction where the volume of the first accommodation space 3 becomes larger; the first accommodation space 3 is a sealed space, and the fixed rod 39 is connected to the outside atmosphere through the moving housing 34. When the driving of the second driver 8 is released, under the action of the outside atmospheric pressure, the moving housing 34 moves along the fixed rod 39 in a direction where the volume of the first accommodation space 3 becomes smaller, and at this time the volume of the sixth accommodation space 38 becomes smaller.

[0116] Specifically, as Figure 1 、 Figure 2As shown, it further includes a liquid replenishing device and a third valve 13; the third valve 13 is installed on the first pipeline 1; the liquid replenishing device is installed on the first pipeline 1 and is arranged between the first valve 5 and the third valve 13.

[0117] Specifically, as Figure 2 shown, the interior of the liquid replenishing device is provided with a liquid replenishing device housing 24 and a first driving rod 2. The interior of the liquid replenishing device housing 24 is divided by the first driving rod 2 into a second accommodating space 30 and a third accommodating space 31. Both the second accommodating space 30 and the third accommodating space 31 are closed spaces. A first driving body 4 is arranged in the second accommodating space 30; the third accommodating space 31 is respectively connected to a fourth accommodating space 35 and a liquid storage device through the first pipeline 1; or the third accommodating space 31 is respectively connected to a sixth accommodating space 38 and a liquid storage device through the first pipeline 1; the first driving body 4 is electrically connected to the control device; when the first driving body 4 drives the first driving rod 2 to move close to the third accommodating space 31, the first valve 5 is opened, and the fluid in the third accommodating space 31 enters the fourth accommodating space 35 through the first pipeline 1; when the driving of the first driving body 4 is released, the third valve 13 is opened and the first valve 5 is closed. Under the action of the external atmospheric pressure, the first driving rod 2 moves away from the third accommodating space 31, thereby sucking the fluid in the liquid storage device into the third accommodating space 31.

[0118] Specifically, in a preferred example, as Figure 1 shown, the liquid storage device adopts a liquid storage bottle 23, and containers with different structural forms and sizes can also be selected according to actual situations to meet the requirements of actual applications.

[0119] Specifically, as Figure 1 shown, the first driving body 4 or the second driving body 8 includes various driving forms, including using smart materials, motors, hydraulics, pneumatics, or phase change materials, etc. In a preferred example, the first driving body 4 uses a phase change material as the driving body. For example, paraffin, a phase change material, is used. An electric heating wire is arranged in the paraffin, and the phase change of the phase change material is realized by heating the electric heating wire by electrifying it. Thus, the expansion and contraction are realized by controlling the temperature change of the paraffin, so as to realize the precise driving of the first driving rod 2 by the first driving body 4, as Figure 8As shown, it is a schematic diagram of the first driving rod 2 before and after movement when heated by an electric heating wire; in a variant, the first driving body 4 uses a shape memory alloy in smart materials as the driving body. The shape memory alloy has a shape memory effect. Taking a spring made of memory alloy as an example, when this spring is placed in hot water, the length of the spring immediately elongates, and when it is placed in cold water, it will immediately return to its original shape. By controlling the water temperature, the elongation length of the shape memory alloy spring can be controlled, thereby realizing the driving function. Another example is that the magnetostrictive material in smart materials can also achieve precise driving by magnetizing in a magnetic field to achieve elongation and shortening in the magnetic field direction.

[0120] Specifically, as Figure 1 、 Figure 21 shown, it further includes a mixing chamber 40; the mixing chamber 40 is respectively connected to the fourth accommodation space 35 and the third accommodation space 31 through the first pipeline 1; or the mixing chamber 40 is respectively connected to the sixth accommodation space 38 and the third accommodation space 31 through the first pipeline 1. By setting the mixing chamber 40 as a mixing transition container, through the repeated pressing in and sucking out of the fluid, the liquid medicine is mixed and then added to the fourth accommodation space 35, improving the quality of solution preparation.

[0121] Specifically, as Figure 21 shown, the mixing chamber 40 is an elastomer. When the liquid inside is filled and expands, the restoring force of the elastomer acts on the liquid inside the mixing chamber 40. At this time, if the mixing chamber 40 is connected to the external injection head 25 and the corresponding switch is opened, the elastomer squeezes the internal liquid, which can increase the injection pressure of the injection head 25. Therefore, through the resilience of the mixing chamber 40 itself, it helps to stabilize and increase the injection pressure.

[0122] Furthermore, as Figure 21 shown, the mixing chamber 40 is connected to the sixth accommodation space 38. Through the second driving body 8, the liquid medicine in the sixth accommodation space 38 can flow into the mixing chamber 40, and at the same time, under the action of the external atmospheric pressure, the liquid medicine in the mixing chamber 40 can flow back into the sixth accommodation space 38. After flowing in and out of the mixing chamber 40 repeatedly for many times, the liquid medicine is fully stirred. Based on the same principle, as Figure 2 shown, the liquid preparation tank 20 can also achieve the same function as the mixing chamber 40, realizing the uniform mixing of the liquid medicine.

[0123] Specifically, in a preferred example, the housing 24 of the liquid storage device adopts an annular structure, as Figure 9As shown, an annular channel is provided inside the annular structure, and a plug 22 is fixed inside the annular channel. The first driving body 4 includes an electric heating wire and a phase change material. One end of the electric heating wire is installed on the plug 22, and the other end of the electric heating wire is connected to the first driving rod 2. When the electric heating wire is electrified and heated, the phase change material undergoes a phase change when heated, so as to drive the first driving rod 2 to move along the direction of the annular channel inside the annular structure, so that the third accommodation space 31 can be enlarged or reduced, and thus the fluid can flow into the third accommodation space 31 or the fluid can flow out of the third accommodation space 31.

[0124] Specifically, as Figure 3 、 Figure 4 shown, the first valve 5, the second valve 7 or the third valve 13 can adopt various structural forms. In one embodiment, the first valve 5, the second valve 7 or the third valve 13 includes a first control rod 10, a second control rod 11, a control mechanism 12 and a joint shaft 14. The first control rod 10 and the second control rod 11 are arranged crosswise, and the first control rod 10 and the second control rod 11 can rotate relative to each other around the joint shaft 14 under the drive of the control mechanism 12. When the control mechanism 12 drives one end of the first control rod 10 and the second control rod 11 to move away from each other, the other end of the first control rod 10 and the second control rod 11 also moves away from each other. As Figure 4 shown, at this time, the first valve 5 or the second valve 7 is shown to be open; when the control mechanism 12 drives one end of the first control rod 10 and the second control rod 11 to move closer to each other, the other end of the first control rod 10 and the second control rod 11 also moves closer to each other. As Figure 3 shown, at this time, the first valve 5 or the second valve 7 is shown to be closed; wherein, a second spring 24 is arranged on the side of the first control rod 10 and the second control rod 11 close to the control mechanism 12, which can play an auxiliary buffering role during the valve opening and closing process.

[0125] Furthermore, in another embodiment, as Figure 5As shown, the first valve 5, the second valve 7 or the third valve 13 includes a control mechanism 12, a mounting carrier 15, a control arm 16, a support column 17 and a telescopic mechanism 18. The control arm 16 includes a control end and a driving end. One end of the control mechanism 12, one end of the support column 17 and one end of the telescopic mechanism 18 are respectively mounted on the mounting carrier 15. The control arm 16 is rotatably mounted at the other end of the support column 17. The driving end of the control arm 16 rotates around the other end of the support column 17 under the drive of the control mechanism 12, so that the control end of the control arm 16 moves away from the fluid in the valve, thereby opening the first valve 5, the second valve 7 or the third valve 13. A first spring 19 is provided on the telescopic mechanism 18. When the other end of the control mechanism 12 moves away from the driving end of the control arm 16, the first spring 19 can drive the telescopic mechanism 18 to drive the control end of the control arm 16 to move closer to the fluid in the valve, thereby closing the first valve 5, the second valve 7 or the third valve 13. In specific applications, the installation position of the support column 17 on the control arm 16 can be adjusted according to the actual application scenario, so as to realize the action sensitivity of the control end when the control mechanism 12 applies force to the driving end, and realize the corresponding amplification or reduction of force or displacement, such as Figure 6 , Figure 7 shown, so as to realize the corresponding amplification or reduction of force or displacement of the desired control effect, so as to realize the desired control effect.

[0126] Furthermore, in another embodiment, it includes a third bladder 44 and a second magnetic field control body. The third bladder 44 is arranged inside the first pipeline 1 and the second pipeline 6. The third bladder 44 is filled with a switching fluid. When the second magnetic field control body does not apply a magnetic field, there is a second gap between the third bladder 44 and the inner wall of the first pipeline 1 or the second pipeline 6, as Figure 12 shown. At this time, the first valve 5 and / or the second valve 7 is open. When the second magnetic field control body applies a magnetic field, as Figure 13 shown, the third bladder 44 deforms to block the first pipeline 1 or the second pipeline 6, thereby closing the first valve 5, the second valve 7 or the third valve 13.

[0127] In practical applications, in order to make the third bladder 44 achieve a better effect of blocking the pipeline, the first pipeline 1 and the second pipeline 6 can be provided with a reduced diameter. The inner diameter at the reduced diameter of the pipeline is smaller than the inner diameter of the pipeline, which can realize better blocking of the pipeline when the third bladder 44 deforms; the first pipeline 1 and the second pipeline 6 can also adopt a structure with a polygonal cross-section of the internal flow channel, such as a square, which can also increase the blocking effect of the third bladder 44 on the pipeline when it deforms. When designing specifically, it is reasonably selected according to the specific application scenario.

[0128] Specifically, in yet another embodiment, it includes a first bladder 41, a second bladder 42, and a first magnetic field control body. The first bladder 41 and the second bladder 42 are respectively arranged on both sides along the width direction inside the first pipeline 1 or the second pipeline 6. In a preferred example, the first bladder 41 and the second bladder 42 are filled with a switching fluid, such as magnetorheological fluid. When the first magnetic field control body does not apply a magnetic field, there is a first gap between the first bladder 41 and the second bladder 42, as Figure 10 shown. At this time, the first valve 5 or the second valve 7 is open; when the first magnetic field control body applies a magnetic field, as Figure 11 shown, the first bladder 41 and the second bladder 42 deform and approach each other to block the first pipeline 1 or the second pipeline 6, thereby closing the first valve 5 or the second valve 7.

[0129] It should be noted that the fluid flowing in the pipeline is named the working fluid. This is applicable to the case where the switching fluid and the working fluid are different types of fluids. The switching fluid is used to implement the opening and closing of the valve. The switching fluid is filled in the bladder to isolate it from the working fluid and prevent mutual contamination. Among them, the number of bladders can be one or multiple, and both can achieve the opening and closing of the valve. For example, Figure 10 、 Figure 11 use two bladders to achieve the opening or closing of the first valve 5 or the second valve 7; for another example, Figure 12 、 Figure 13 use one bladder to achieve the opening or closing of the first valve 5 or the second valve 7. Among them, it can also be more than two bladders that achieve the opening and closing of the valve.

[0130] Specifically, the control mechanism 12 can adopt various structural forms according to the actual application scenario, such as Figure 10 、 Figure 6 、 Figure 7 shown. It is a fluid transmission displacement mechanism in the form of a communicating vessel, which is a device that can achieve the amplification or reduction of force. Under the action of the same magnetic field force, when the control mechanism 12 adopts the structure in Figure 5 、 Figure 7 , a larger driving stroke can be obtained. When the control mechanism 12 adopts the structure in Figure 6 , a smaller driving stroke can be obtained. Therefore, it can be reasonably selected according to the requirements in actual applications.

[0131] Furthermore, the control mechanism 12 adopts a piezoelectric ceramic structure body, and the opening and closing of the control mechanism 12 are realized by controlling the current applied to the piezoelectric ceramic to achieve precise control; in a variant, the control mechanism 12 adopts a magnetostrictive structure body, and the opening and closing of the control mechanism 12 are realized by controlling the magnitude of the magnetic field applied to the magnetostrictive structure body. In another variant, the control mechanism 12 adopts an electromagnetic coil cooperating with a permanent magnet structure to achieve the opening and closing of the control mechanism 12.

[0132] Furthermore, the control mechanism 12 can also be implemented in various structural forms such as a shape memory alloy driver, a hydraulic or pneumatic driver, a magnetorheological fluid driver, an electrorheological fluid driver, a thermal expansion driver, an electromagnetic driver, etc. to achieve control.

[0133] Specifically, the present invention can perform precise solution preparation. For example, Figure 14 as shown, the number of liquid preparation devices is set according to the types of liquid medicines required in the solution preparation. After various liquid medicines are mixed in the liquid preparation tank 20, they enter the finished product tank 21 for mixing and standby.

[0134] It should be noted that the liquid medicine in the present invention is one type in the solution preparation, and it can also be the preparation of other liquids. Therefore, the present invention can be applied to the preparation of various liquids and has a wide application range.

[0135] Taking the preparation of liquid medicine as an example and combining with Figure 1 、 Figure 16 , the working principle of the present invention is as follows:

[0136] Select the number of liquid preparation devices according to the types of liquid medicines to be added to the liquid medicine. For example, if 3 types of liquid medicines need to be mixed in the liquid medicine, marked as A, B, and C, assuming the total preparation amount of the liquid medicine is 25 ml, where A is 7 ml, B is 8 ml, and C is 10 ml. Input the parameter information of the liquid medicine preparation into the control device according to the actual situation of the liquid preparation. The control device controls the first valve 5, the second valve 7, and the second driver 8 to complete the preparation of the liquid medicine, and the control device controls the injection device to inject into the human body according to the preset information to complete the automatic injection task.

[0137] Specifically, during the process of preparing the liquid medicine, first, close the second valve 7 and open the first valve 5. The control device controls the second driving body 8 to drive the linkage rod 9 to move away from the fourth accommodation space 35. The fourth accommodation space 35 is a closed space. As the volume of the fourth accommodation space 35 increases, the liquid medicine in the liquid storage device is sucked into the fourth accommodation space 35. When the amount of liquid medicine sucked into the fourth accommodation space 35 reaches the set requirement, the control device controls the second driving body 8 to stop driving. Secondly, close the first valve 5 and open the second valve 7. Since the linkage rod 9 is connected to the outside atmosphere and the fifth accommodation space 37 is a closed space, when the driving force of the second driving body 8 is released, a pressure difference is generated between the fifth accommodation space 37 and the outside atmosphere. Under the action of the outside atmospheric pressure, the linkage rod 9 moves towards the direction close to the fourth accommodation space 35. At this time, the volume of the fourth accommodation space 35 becomes smaller, and the liquid medicine in the fourth accommodation space 35 is pressed into the liquid preparation tank 20 through the second pipeline 6. After the liquid medicines of types A, B, and C are all added to the liquid preparation tank 20 according to the set volume of the solution, the various liquid medicines are mixed in the liquid preparation tank 20, and the liquid medicine in the liquid preparation tank 20 flows into the finished product tank 21, and the injection of the liquid medicine is completed through the injection device under the control of the control device.

[0138] It should be noted that during the process of preparing the liquid medicine of the present invention, the process of sucking the liquid medicine into the fourth accommodation space 35 consumes energy. During the process of adding the liquid medicine from the fourth accommodation space 35 to the liquid preparation tank 20, except for the valves, no electricity is consumed, which is achieved by generating a pressure difference between the fifth accommodation space 37 and the outside atmosphere. The control accuracy of the whole process is high, and the control device can automatically select the number of liquid preparation devices according to the input information instructions, realizing the automation of liquid medicine preparation and injection.

[0139] The present invention realizes the automatic preparation of the solution based on the reciprocating driving device and the control device, and the whole preparation system is hermetically connected through pipelines, without splashing and volatilization of the liquid medicine, safe and reliable, precisely controllable, noiseless, and capable of preparing multiple liquid medicines simultaneously. Compared with the prior art, it has a simple structure, convenient operation, and wide application.

[0140] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0141] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily with each other.

Claims

1. A solution preparation and injection system based on a reciprocating drive device, characterized in that, It includes a liquid storage device, a first pipeline (1), a first valve (5), a second pipeline (6), a second valve (7), a control device and a liquid dispensing device; A fourth accommodation space (35) is provided inside the liquid dispensing device; The fourth accommodation space (35) is connected to the liquid storage device through the first pipeline (1); The fluid in the fourth accommodation space (35) flows out through the second pipeline (6); The first valve (5) and the second valve (7) are respectively installed on the first pipeline (1) and the second pipeline (6), and the control device is electrically connected to the first valve (5) and the second valve (7) respectively; The number of the liquid dispensing devices can be set according to the types of fluids required in solution preparation, and the number of the liquid storage devices matches the number of the liquid dispensing devices; It can complete the automatic preparation of solutions and the injection of solutions, and the solution preparation and injection can be carried out synchronously; It further includes an injection device and a liquid dispensing tank (20); The injection device can achieve injection without relying on gravity through the pressure difference formed by the fifth accommodation space (37) and the external atmospheric pressure; The control device can respectively control the first valve (5), the second valve (7), the liquid dispensing device and the injection device according to the set program to complete the solution preparation and injection operations; A fluid actuator and a power actuator are provided in the liquid dispensing device. A second driving body (8) is provided in the power actuator, including a linkage rod (9). A first connection end (33) and a second connection end (36) are provided on the linkage rod (9). The first connection end (33) extends into the interior of the fluid actuator and forms a fourth accommodation space (35) with the fluid actuator; The second connection end (36) extends into the interior of the power actuator and forms a fifth accommodation space (37) with the power actuator. The fifth accommodation space (37) is a closed space, and the second driving body (8) is installed in the fifth accommodation space (37); The second driving body (8) is electrically connected to the control device; Driven by the second driving body (8), the linkage rod (9) moves in a direction away from the fifth accommodation space (37); The fifth accommodation space (37) is a closed space, and the linkage rod (9) is connected to the outside atmosphere. When the driving of the second driving body (8) is released, under the action of the external atmospheric pressure, the linkage rod (9) moves in a direction close to the fourth accommodation space (35). At this time, the volume of the fourth accommodation space (35) becomes smaller.

2. The solution preparation and injection system based on a reciprocating drive device according to claim 1, wherein One end of the power actuator extends into the interior of the fluid actuator and forms a sixth accommodation space (38) with the fluid actuator, and the other end of the power actuator is a free end; The power actuator includes a fixed rod (39) and a moving housing (34). The fixed rod (39) is installed inside the moving housing (34), and a first accommodation space (3) is formed between the fixed rod (39) and the moving housing (34). The second driving body (8) is installed in the first accommodation space (3); The second driving body (8) is electrically connected to the control device; Driven by the second driver (8), the moving housing (34) moves along the fixed rod (39) in the direction in which the volume of the first accommodation space (3) increases; The first accommodation space (3) is a closed space. The fixed rod (39) is connected to the outside atmosphere through the moving housing (34). When the drive of the second driver (8) is released, under the action of the outside atmospheric pressure, the moving housing (34) moves along the fixed rod (39) in the direction in which the volume of the first accommodation space (3) decreases. At this time, the volume of the sixth accommodation space (38) decreases.

3. The solution preparation and injection system based on the reciprocating drive device according to claim 1, characterized in that, It further includes a liquid replenishing device and a third valve (13); The third valve (13) is installed on the first pipeline (1); The liquid replenishing device is installed on the first pipeline (1) and is arranged between the first valve (5) and the third valve (13); The interior of the liquid replenishing device is provided with a liquid replenishing device housing (24) and a first driving rod (2). The interior of the liquid replenishing device housing (24) is divided into a second accommodation space (30) and a third accommodation space (31) by the first driving rod (2); Both the second accommodation space (30) and the third accommodation space (31) are closed spaces. A first driver (4) is arranged in the second accommodation space (30); The third accommodation space (31) is respectively connected to the fourth accommodation space (35) and the liquid storage device through the first pipeline (1); or The third accommodation space (31) is respectively connected to the sixth accommodation space (38) and the liquid storage device through the first pipeline (1); The first driver (4) is electrically connected to the control device; When the first driver (4) drives the first driving rod (2) to move close to the third accommodation space (31), the first valve (5) is opened, and the fluid in the third accommodation space (31) enters the fourth accommodation space (35) through the first pipeline (1); When the drive of the first driver (4) is released, the third valve (13) is opened and the first valve (5) is closed. Under the action of the outside atmospheric pressure, the first driving rod (2) moves away from the third accommodation space (31), thereby sucking the fluid in the liquid storage device into the third accommodation space (31).

4. The solution preparation and injection system based on the reciprocating drive device according to claim 3, characterized in that, The first valve (5), the second valve (7), and the third valve (13) respectively adopt any of the following structural forms: - It includes a first control rod (10), a second control rod (11), a control mechanism (12), and a joint shaft (14). The first control rod (10) and the second control rod (11) are arranged crosswise, and the first control rod (10) and the second control rod (11) can rotate relative to each other around the joint shaft (14) under the drive of the control mechanism (12); When the control mechanism (12) drives one ends of the first control rod (10) and the second control rod (11) to move away from each other, the other ends of the first control rod (10) and the second control rod (11) move away from each other. At this time, the first valve (5) or the second valve (7) is shown to be open; When the control mechanism (12) drives one ends of the first control rod (10) and the second control rod (11) to approach each other, the other ends of the first control rod (10) and the second control rod (11) approach each other. At this time, the first valve (5) or the second valve (7) is shown as closed; - Comprising a control mechanism (12), a mounting carrier (15), a control arm (16), a support column (17), and a telescopic mechanism (18); The control arm (16) includes a control end and a driving end; One end of the control mechanism (12), one end of the support column (17), and one end of the telescopic mechanism (18) are respectively mounted on the mounting carrier (15), and the control arm (16) is rotatably mounted at the other end of the support column (17); The driving end of the control arm (16) rotates around the other end of the support column (17) under the drive of the control mechanism (12), so that the control end of the control arm (16) acts to open the first valve (5) and / or the second valve (7); When the control mechanism (12) moves away from the driving end, the telescopic mechanism (18) can drive the driving end to close the first valve (5) and / or the second valve (7); - Comprising a first bladder (41), a second bladder (42), and a first magnetic field control body; The first bladder (41) and the second bladder (42) are respectively arranged on both sides along the width direction inside the first pipeline (1) and the second pipeline (6), and the first bladder (41) and the second bladder (42) are filled with a switching fluid; When the first magnetic field control body does not apply a magnetic field, there is a first gap between the first bladder (41) and the second bladder (42). At this time, the first valve (5) and / or the second valve (7) is open; When the first magnetic field control body applies a magnetic field, the first bladder (41) and the second bladder (42) deform and approach each other, thereby blocking the first pipeline (1) and / or the second pipeline (6) to close the first valve (5) and / or the second valve (7); - Comprising a third bladder (44) and a second magnetic field control body. The third bladder (44) is arranged inside the first pipeline (1) and the second pipeline (6), and the third bladder (44) is filled with a switching fluid; When the second magnetic field control body does not apply a magnetic field, there is a second gap between the third bladder (44) and the inner wall of the first pipeline (1) or the second pipeline (6). At this time, the first valve (5) and / or the second valve (7) is open; When the second magnetic field control body applies a magnetic field, the third bladder (44) deforms, thereby blocking the first pipeline (1) and / or the second pipeline (6) to close the first valve (5) and / or the second valve (7).

5. The solution preparation and injection system based on the reciprocating drive device according to claim 4, characterized in that, The control mechanism (12) includes any one of the following structural forms: - A piezoelectric ceramic structure; - A magnetostrictive structure; - A shape memory alloy driver; - A hydraulic or pneumatic driver; - A magnetorheological fluid driver; - An electrorheological fluid driver; - A thermal expansion driver; - An electromagnetic driver; - An electromagnetic permanent magnet driver.

6. The solution preparation and injection system based on a reciprocating drive device according to claim 2 or claim 4, characterized in that, The first driver (4) or the second driver (8) respectively adopts any one of the following driving structures: - A motor; - Phase change driving body; - Intelligent material structure; - Pneumatic driving body; - Hydraulic driving body.

7. The solution preparation and injection system based on the reciprocating drive device according to claim 3, characterized in that, The liquid replenishing device housing (24) adopts an annular structure; An annular channel is arranged inside the annular structure, and a plug (22) is fixed inside the annular channel. The first driving rod (2) and the plug (22) divide the annular channel into a second accommodation space (30) and a third accommodation space (31).

8. The solution preparation and injection system based on a reciprocating drive device according to claim 3, wherein, It further includes a mixing chamber (40); The mixing chamber (40) is respectively connected to a fourth accommodation space (35) and a third accommodation space (31) through a first pipeline (1); or The mixing chamber (40) is respectively connected to a sixth accommodation space (38) and a third accommodation space (31) through a first pipeline (1).

9. The solution preparation and injection system based on a reciprocating drive device according to claim 1, characterized in that The injection device includes an injection head (25). One end of the injection head (25) is connected to a second pipeline (6), and the other end of the injection head (25) is a free end; The number of the injection heads (25) is one or more.

10. The solution preparation and injection system based on a reciprocating drive device according to claim 1, wherein, It further includes a finished product tank (21); The liquid preparation tank (20) is respectively connected to the second pipeline (6) and the finished product tank (21).

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