Automatic medicine pushing device and automatic medicine pushing method based on injector

Abstract

The invention discloses an automatic medicine pushing device and method based on an injector. The automatic medicine pushing device comprises an injector support. The driving module comprises a driving motor and a push block, a groove matched with an injection push rod of the injector in shape is formed in the push block, and the driving motor is used for providing driving force for the push block so that the push block can push the injection push rod to move towards the injection needle cylinder; the locking mechanism comprises a locking module, the locking module is attached to the push block, the locking module comprises a spring and a spring bolt, the spring bolt is elastically connected with the spring, and the spring bolt extends to the position above the opening of the groove due to the elastic force of the spring; when the spring bolt is in contact with the injection push rod in the process of moving along with the push block, the spring bolt is extruded by the injection push rod to be contracted and abdicated, and after the injection push rod slides into the groove of the push block, the spring bolt extends out under the action of the reset force of the spring and locks the injection push rod. The automation degree of medicine feeding of the medicine pushing device in the organ in-vitro transfer process can be improved, and the labor cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of drug delivery, and in particular to an automatic drug pushing device and an automatic drug pushing method based on a syringe. Background Art

[0002] During the organ ex vivo transport process, specific drugs need to be injected into the organ to maintain its normal function. The demand for drugs varies with the duration of transport. When the organ is ex vivo for a long time, a large dose of drugs is required. When the organ is ex vivo for a short time, a small dose of drugs is required. For cases with very short transport times, there are usually a lot of drugs left over. Due to the organ-drug specificity, the remaining drugs cannot be used a second time and can only be discarded, resulting in great waste.

[0003] When injecting specific drugs into organs, the drug administration speed must be strictly controlled to ensure uniform and extremely low-speed drug administration. In related technologies, a drug pushing device with a syringe is used to inject drugs into organs. First, the syringe needs to be installed and fixed on the drug pushing device and locked. Then the medical staff manually pushes the drug pushing head to contact the tail of the injection push rod, and then manually triggers the drug pushing program to inject specific drugs into the organ. That is, the entire drug pushing process requires the intervention of medical staff, which consumes a lot of manpower. In addition, the syringe installation process is cumbersome, and the drug pushing device cannot accurately identify the starting position of the syringe drug pushing. After manually locking the syringe, the drug pushing head needs to be manually pushed to contact the tail of the injection push rod, which makes the drug pushing device low in automation during the ex vivo transportation of organs. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides an automatic drug delivery device and an automatic drug delivery method based on a syringe, which is conducive to improving the automation of drug delivery by the drug delivery device during organ ex vivo transportation and reducing labor costs.

[0005] In the first aspect, the present application proposes an automatic drug pushing device based on a syringe, comprising:

[0006] A syringe holder, used to fix the syringe barrel of the syringe;

[0007] A driving module, comprising a driving motor and a push block, wherein the push block is provided with a groove matching the shape of the injection push rod of the syringe, and the driving motor is used to provide a driving force for the push block so that the push block pushes the injection push rod to move in the direction of the injection syringe;

[0008] The locking mechanism comprises a locking module, the locking module is fitted with the push block, the locking module comprises a spring and a locking tongue, the locking tongue is elastically connected to the spring, and the locking tongue extends above the opening of the groove due to the elastic force of the spring; when the locking tongue contacts the injection push rod during the movement of the push block, the locking tongue is squeezed by the injection push rod to shrink and give way, and after the injection push rod slides into the groove of the push block, the locking tongue extends and locks the injection push rod under the action of the spring restoring force.

[0009] The technical solution of the first aspect of the present application has at least one of the following advantages or beneficial effects: the automatic drug pushing device is provided with a syringe support, and the syringe support can fix the injection syringe of the syringe, so that the injection syringe of the syringe remains stable during the drug injection process, and the syringe is uniformly and stably delivered to the organ to avoid organ damage. Since the locking module and the push block are fitted, when the driving motor drives the push block to move, the lock tongue moves with the push block. In the process of the lock tongue moving with the push block, when the lock tongue contacts the injection push rod, the lock tongue is squeezed by the injection push rod and the lock tongue shrinks and gives way. At this time, the injection push rod slides into the groove provided on the push block that matches the shape of the injection push rod of the syringe. After the injection push rod slides into the groove of the push block, the lock tongue extends under the action of the spring reset force and locks the injection push rod. At the same time, the driving motor provides a driving force for the push block to push the injection push rod to move in the direction of the injection syringe. Through the cooperation of the driving module and the locking mechanism, the push block and the injection push rod are automatically contacted and locked in the process of the driving motor driving the push block to move in the direction of the injection syringe, so as to realize the automatic pushing of the drug. In the drug pushing process of the automatic drug pushing device based on a syringe in the embodiment of the present application, there is no need for manual pushing of the drug pushing head to contact the tail of the injection push rod, and then manual triggering to start the drug pushing program to achieve drug pushing. That is, the automatic drug pushing device based on a syringe in the present application does not require manual intervention during operation, which improves the degree of automation of drug administration by the drug pushing device during ex vivo organ transportation and can reduce labor costs.

[0010] According to some embodiments of the present application, the automatic medicine pushing device further includes:

[0011] a starting point trigger switch, disposed in the groove, and configured to send a push injection ready signal to the controller when the starting point trigger switch is triggered by the injection push rod;

[0012] The end point optical coupler is arranged at a first preset position, and the end point optical coupler is used to send a push injection end signal to the controller when the end point optical coupler switches from a first state to a second state.

[0013] According to some embodiments of the present application, the automatic medicine pushing device further includes:

[0014] The zero-point optical coupler is arranged at the second preset position, and is used to send a zero-point reset signal to the controller when it is detected that the optical signal is not cut off; and is also used to send a zero-point reset success signal to the controller when it is detected that the optical signal is cut off.

[0015] According to some embodiments of the present application, the locking module further includes:

[0016] A locking block and a locking contact, wherein the locking block is embedded in the locking module, and the locking block is provided with an inverted V structure. When the locking contact is engaged with the inverted V structure, the locking tongue is in an extended state, and when the locking contact is in contact with the bottom of the locking block, the locking tongue is in a retracted and yielding state;

[0017] The end point unlocking contact is set at a third preset position. When the locking block contacts the end point unlocking contact, the locking block retreats under the thrust of the end point unlocking contact, so that the lock contact contacts the bottom of the locking block, and the lock tongue is in a retracted and yielding state.

[0018] According to some embodiments of the present application, a reset plate, wherein a lock reset contact is disposed on the reset plate, wherein the lock reset contact and the locking block are disposed in the same horizontal direction;

[0019] When the locking block contacts the lock reset contact, the locking block is reset under the thrust of the lock reset contact, so that the lock contact is engaged with the inverted V structure, and the lock tongue is in an extended state.

[0020] According to some embodiments of the present application, the syringe bracket includes an arc-shaped bracket, the arc-shaped bracket forms a bayonet, and the opening of the bayonet is smaller than the diameter of the injection syringe.

[0021] In a second aspect, an embodiment of the present application provides an automatic medicine pushing method based on a syringe, which is applied to an automatic medicine pushing device based on a syringe as described in the technical solution of the first aspect above, wherein the automatic medicine pushing device based on a syringe further comprises a starting point trigger switch and an end point optical coupler, wherein the starting point trigger switch is used to send a push injection ready signal when the starting point trigger switch is triggered by the injection push rod, and the end point optical coupler is used to send a push injection end signal when the end point optical coupler is switched from a first state to a second state, wherein the automatic medicine pushing method comprises:

[0022] Controlling the driving motor to provide driving force for the push block to move, so that the push block pushes the injection push rod to move in the direction of the injection syringe;

[0023] In response to the injection ready signal, controlling the driving motor to push the push block at a first speed, so that the push block pushes the injection push rod to push the drug;

[0024] The driving motor is controlled to stop working in response to the injection end signal.

[0025] The technical solution of the second aspect of the present application has at least one of the following advantages or beneficial effects: the automatic drug pushing device is provided with a starting point trigger switch and an end point optical coupler. When the starting point trigger switch is triggered by the injection push rod, the starting point trigger switch sends a push injection ready signal to the controller. The controller controls the drive motor to work at a preset speed to provide driving force for the push block, so that the push block pushes the injection push rod to move in the direction of the injection syringe, thereby realizing the automatic pushing of the drug. When the end point optical coupler switches from the first state to the second state, it sends a push injection end signal to the controller, and the controller controls the drive motor to stop working, thereby stopping the push block from continuing to push the injection push rod to move, and the drug pushing ends. By setting the starting point trigger switch and the end point optical coupler, the starting position and the end position of the drug pushing can be determined, and the automatic pushing and the end pushing of the drug can be realized according to the starting position and the end position of the drug pushing, thereby improving the degree of automation of the drug pushing device during the ex vivo transportation of the organ.

[0026] According to some embodiments of the present application, the automatic medicine pushing device further includes a recording module, the recording module is used to record the travel, the end point optical coupler is set at a first preset position, the end point optical coupler has a preset coordinate, and the first speed is determined by the following method:

[0027] When the driving motor is powered on, the driving motor is controlled to provide driving force for the push block to move, so that the push block pushes the injection push rod to move in the direction of the injection syringe;

[0028] When the push injection ready signal is received, the current position is recorded as the coordinates of the push injection starting point;

[0029] Determine the injection stroke length according to the preset coordinates and the injection starting point coordinates;

[0030] The first speed is determined according to the injection stroke length and a preset injection time.

[0031] According to some embodiments of the present application, the syringe-based automatic medicine pushing device further includes a zero-point optical coupler, and the automatic medicine pushing method further includes:

[0032] If it is the first time to power on, collect the state of the optical signal detected by the zero-point optical coupler;

[0033] When the optical signal detected by the zero point optical coupler is not cut off, a zero point reset signal is sent;

[0034] In response to a zero point reset signal, the motor is controlled to retract so that the push block is reset to a preset zero point position;

[0035] When the optical signal detected by the zero point optical coupler is cut off, a zero point reset success signal is sent.

[0036] In a third aspect, an embodiment of the present application provides a controller comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method described in the technical solution of the second aspect when running the computer program.

[0037] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of an automatic medicine pushing device based on a syringe provided in an embodiment of the present application;

[0039] Figure 2 It is a structural schematic diagram of another automatic medicine pushing device based on a syringe provided in an embodiment of the present application;

[0040] Figure 3 is a structural schematic diagram of a locking module provided in an embodiment of the present application;

[0041] Figure 4 This is a flow chart of an automatic medicine pushing method provided in an embodiment of the present application;

[0042] Figure 5 is a flow chart of a method for determining a first speed provided in an embodiment of the present application;

[0043] Figure 6 is a flow chart of a push block resetting method provided in an embodiment of the present application;

[0044] Figure 7 It is a structural schematic diagram of a controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. In addition, the characteristics, operations or features described in the specification can be combined in any appropriate manner to form various implementation methods. At the same time, the steps or actions in the method description can also be replaced or adjusted in order in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the accompanying drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary sequence, unless otherwise specified that a certain sequence must be followed.

[0046] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0047] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0048] During the ex vivo transport of organs, specific drugs need to be injected into the organs to maintain their normal functions. In the related art, a drug-pushing device with a syringe is used to inject drugs into the organs. First, the syringe needs to be fixed to the drug-pushing device and locked. Then, the medical staff manually pushes the drug-pushing head to contact the tail of the injection push rod, and then manually triggers the drug-pushing program to inject specific drugs into the organs. That is, the entire drug-pushing process requires the intervention of medical staff, which consumes a lot of manpower. In addition, the syringe installation process is cumbersome, and the drug-pushing device cannot accurately identify the starting position of the syringe drug-pushing. After manually locking the syringe, the drug-pushing head needs to be manually pushed to contact the tail of the injection push rod, which makes the drug-pushing device low in the degree of automation of drug administration during the ex vivo transport of organs.

[0049] Based on this, the embodiments of the present application provide an automatic drug pushing device and an automatic drug pushing method based on a syringe, which are beneficial to improving the degree of automation of drug administration by the drug pushing device during ex vivo organ transportation, while reducing labor costs.

[0050] The automatic medicine pushing device and the automatic medicine pushing method of the syringe are further described below in conjunction with the accompanying drawings.

[0051] Reference Figures 1 to 3As shown, the automatic drug pushing device based on the syringe includes a syringe bracket 100, a driving module and a locking mechanism. The syringe bracket 100 is used to fix the injection syringe 110 of the syringe. The driving module includes a driving motor 210 and a push block 220. The push block 220 is provided with a groove 221 matching the shape of the injection push rod 120 of the syringe. The driving motor 210 is used to provide a driving force for the push block 220 so that the push block 220 pushes the injection push rod 120 to move in the direction of the injection syringe 110; the locking mechanism includes a locking module 300, the locking module 300 and the push block 220. The push block 220 fits well, and the locking module 300 includes a spring 310 and a locking tongue 320. The locking tongue 320 and the spring 310 are elastically connected, and the locking tongue 320 extends above the opening of the groove 221 due to the elastic force of the spring 310; when the locking tongue 320 contacts the injection push rod 120 during the movement of the push block 220, the locking tongue 320 is squeezed by the injection push rod 120 to shrink and make way. After the injection push rod 120 slides into the groove 221 of the push block 220, the locking tongue 320 extends and locks the injection push rod 120 under the action of the restoring force of the spring 310.

[0052] In the present application, the automatic drug pushing device of the syringe is provided with a syringe support 100, which can fix the injection syringe 110 of the syringe, so that the injection syringe 110 of the syringe remains stable during the drug injection process, and the syringe is uniformly and stably delivered to the organ to avoid organ damage. Since the locking module 300 and the push block 220 are fitted, when the driving motor 210 drives the push block 220 to move, the locking tongue 320 moves with the push block 220. During the movement of the locking tongue 320 with the push block 220, when the locking tongue 320 contacts the injection push rod 120, the locking tongue 320 is squeezed by the injection push rod 120 and the locking tongue 320 shrinks and gives way. At this time, the injection push rod 120 slides into the groove 221 set on the push block 220 and matches the shape of the injection push rod 120 of the syringe. After the injection push rod 120 slides into the groove 221 of the push block 220, the locking tongue 320 extends under the action of the reset force of the spring 310 and locks the injection push rod 120. At the same time, the driving motor 210 provides driving force for the push block 220 to push the injection push rod 120 toward the injection syringe 110 to push the medicine.

[0053] The automatic drug pushing device based on a syringe of the present application only needs to place the syringe on the syringe holder 100, and through the cooperation of the driving module and the locking mechanism, the push block 220 and the injection push rod 120 are automatically contacted and locked in the process of the driving motor 210 driving the push block 220 to move in the direction of the injection syringe 110, so as to realize the automatic pushing of the drug. In the process of pushing the drug by the automatic drug pushing device based on a syringe of the present application, there is no need to manually push the drug pushing head to contact with the tail of the injection push rod 120, and then manually trigger the drug pushing program to push the drug, that is, the automatic drug pushing device based on a syringe of the present application does not require manual intervention during the working process, which improves the degree of automation of the drug pushing device in the process of ex vivo transport of organs, and can reduce labor costs at the same time.

[0054] In some embodiments of the present application, the syringe bracket 100 includes an arc-shaped bracket, which forms a bayonet, and the opening of the bayonet is smaller than the diameter of the injection syringe 110 .

[0055] By setting the arc-shaped bracket of the syringe bracket 100 to form a bayonet, and setting the opening of the bayonet to be smaller than the diameter of the injection syringe 110, the injection syringe 110 can be fixed by using the bayonet formed by the arc-shaped bracket, thereby preventing the injection syringe 110 from shifting when the push block 220 pushes the injection push rod 120 to move in the direction of the injection syringe 110, thereby improving the accuracy of automatic drug pushing of the syringe.

[0056] In some embodiments of the present application, the automatic drug pushing device also includes a starting point trigger switch 222 and an end point optical coupler 400. The starting point trigger switch 222 is arranged in the groove 221, and the starting point trigger switch 222 is used to send a push injection ready signal to the controller when the starting point trigger switch 222 is triggered by the injection push rod 120; the end point optical coupler 400 is set at a first preset position, and the end point optical coupler 400 is used to send a push injection end signal to the controller when the end point optical coupler 400 switches from the first state to the second state.

[0057] In the embodiment of the present application, a groove 221 matching the shape of the injection push rod 120 of the syringe is provided on the push block 220, and a starting point trigger switch 222 is provided at the groove 221. In the process of the driving motor 210 driving the push block 220 to move in the direction of the injection syringe 110, when the push block 220 and the injection push rod 120 are in contact, the injection push rod 120 will contact the starting point trigger switch 222 on the push block 220. When the starting point trigger switch 222 is triggered by the injection push rod 120, the starting point trigger switch 222 sends a push injection ready signal to the controller. After receiving the push injection ready signal, the controller outputs a first preset PWM signal to control the driving motor 210 to operate at a preset speed. The driving motor 210 provides driving force for the push block 220, so that the push block 220 stably and uniformly pushes the injection push rod 120 to move in the direction of the injection syringe 110, thereby realizing the automatic delivery of the drug. The end point optical coupler 400 is set at a first preset position. When the push block 220 pushes the injection push rod 120 to move in the direction of the injection syringe 110, when the push block 220 passes the position of the end point optical coupler 400, the end point optical coupler 400 switches from the first state to the second state, and sends a push end signal to the controller. It can be understood that the first state is a high level state and the second state is a low level state; or, the first state is a low level state and the second state is a high level state. In one embodiment, when the push block 220 pushes the injection push rod 120 to move in the direction of the injection syringe 110, when the end point optical coupler 400 switches from a high level to a low level, a push end signal is sent to the controller. After receiving the push end signal, the controller outputs a second preset PWM signal to control the drive motor 210 to stop working, so as to stop providing driving force to the push block 220, and the drug push is completed. In another embodiment, when the push block 220 pushes the injection push rod 120 to move in the direction of the injection syringe 110, when the end point optical coupler 400 switches from a low level to a high level, a push end signal is sent to the controller. After receiving the push end signal, the controller outputs a second preset PWM signal to control the drive motor 210 to stop working, so as to stop providing driving force to the push block 220, and the drug pushing is completed.

[0058] In the present application, the automatic drug pushing device is provided with a starting point trigger switch 222 and an end point optical coupler 400. When the starting point trigger switch 222 is triggered by the injection push rod 120, the starting point trigger switch 222 sends a push injection ready signal to the controller, and the controller controls the drive motor 210 to work at a preset speed to provide driving force for the push block 220, so that the push block 220 pushes the injection push rod 120 to move in the direction of the injection syringe 110, thereby realizing the automatic pushing of the drug. When the end point optical coupler 400 switches from the first state to the second state, it sends a push injection end signal to the controller, and the controller controls the drive motor 210 to stop working, thereby stopping the push block 220 from continuing to push the injection push rod 120 to move, and the drug pushing ends. By setting the starting point trigger switch 222 and the end point optical coupler 400, the starting position and the end position of the drug pushing can be determined, and the automatic pushing and the end pushing of the drug can be realized according to the starting position and the end position of the drug pushing, thereby improving the degree of automation of the drug pushing device during the ex vivo transportation of the organ.

[0059] In some embodiments of the present application, the automatic medicine pushing device also includes a zero-point optical coupler 500, which is arranged at a second preset position. The zero-point optical coupler is used to send a zero-point reset signal to the controller when it detects that the light signal is not cut off; and is also used to send a zero-point reset success signal to the controller when it detects that the light signal is cut off.

[0060] It can be understood that by setting the zero-point optocoupler 500 at the second preset position, after the automatic medicine pushing device is powered on, within the first time interval, the zero-point optocoupler 500 detects the optical signal in real time. When the optical signal detected by the zero-point optocoupler 500 is not cut off, it indicates that the current push block 220 is not at the zero position. The zero-point optocoupler 500 sends a zero-point reset signal to the controller. The controller outputs a third preset PWM signal according to the zero-point reset signal to control the drive motor 210, so that the drive motor 210 drives the push block 220 to return to the zero position, thereby ensuring that after the automatic medicine pushing device is powered on, the initial position of the push block 220 before executing the automatic medicine pushing is at the zero position, thereby improving the accuracy of the automatic medicine pushing stroke. When the optical signal detected by the zero-point optical coupler 500 is cut off, a zero-point reset success signal is sent to the controller, and the driving motor 210 drives the push block 220 to move toward the injection syringe 110. When the locking tongue 320 contacts the injection push rod 120 during the movement of the push block 220, the locking tongue 320 is squeezed by the injection push rod 120, causing the locking tongue 320 to shrink and make way. After the injection push rod 120 slides into the groove 221 of the push block 220, the locking tongue 320 extends and locks the injection push rod 120 under the action of the reset force of the spring 310. In the process of the driving motor 210 driving the push block 220 to move toward the injection syringe 110, when the injection push rod 120 contacts the starting point trigger switch 222, the starting point trigger switch 222 is triggered by the injection push rod 120, and the starting point trigger switch 222 sends a push injection ready signal to the controller. After receiving the push injection ready signal, the controller outputs a first preset PWM signal to control the driving motor 210 to operate at a preset speed. The driving motor 210 provides driving force for the push block 220, so that the push block 220 stably and uniformly pushes the injection push rod 120 to move in the direction of the injection syringe 110, thereby realizing the automatic delivery of the drug.

[0061] It should be noted that in some embodiments of the present application, the first time interval is 10 seconds, and the zero-point optical coupler 500 determines whether the optical signal is cut off within 10 seconds after the automatic medicine pushing device is powered on. When the optical signal detected by the zero-point optical coupler 500 is not cut off, it indicates that after the automatic medicine pushing device is powered on, the initialization position of the push block 220 is not at the zero position, and the position of the push block 220 needs to be returned to the zero position. The embodiment of the present application does not limit the size of the first time interval, and those skilled in the art can set the size of the first time interval according to actual conditions.

[0062] In some embodiments of the present application, the locking module 300 also includes a locking block 330, a lock contact 340 and an end point unlocking contact 340. The locking block 330 is embedded in the locking module 300. The locking block 330 is provided with an inverted V structure. When the lock contact 340 and the inverted V structure are engaged, the lock tongue 320 is in an extended state. When the lock contact 340 and the bottom of the locking block 330 are in contact, the lock tongue 320 is in a retracted and yielding state. The end point unlocking contact 340 is set at a third preset position. When the locking block 330 and the end point unlocking contact 340 are in contact, the locking block 330 retreats under the thrust of the end point unlocking contact 340, so that the lock contact 340 and the bottom of the locking block 330 are in contact, and the lock tongue 320 is in a retracted and yielding state.

[0063] The locking module 300 also includes a locking block 330 and a lock contact 340, and the locking block 330 is embedded in the locking module 300. In one embodiment, the locking block 330 is in the shape of a long strip, and the locking block 330 is provided with an inverted V structure. When the lock contact 340 and the inverted V structure are engaged, the lock tongue 320 is in an extended state. When the lock contact 340 and the bottom of the locking block 330 are in contact, the lock tongue 320 is in a retracted and yielding state. It can be understood that, in the process of the push block 220 pushing the injection push rod 120 to move in the direction of the injection syringe 110, when the automatic medicine pushing device is about to approach the end point, the first end of the locking block 330 and the end point unlocking contact 340 first contact, and the locking block 330 retreats under the thrust of the end point unlocking contact 340. In the process of the locking block 330 retreating, the positional relationship between the locking contact 340 and the locking block 330 is switched from the inverted V-structure card connection between the locking contact 340 and the locking block 330 to the bottom contact of the locking contact 340 and the locking block 330. When the locking contact 340 and the bottom of the locking block 330 are in contact, the locking tongue 320 shrinks and gives way. When the push block 220 passes the position of the end point optocoupler 400, when the end point optocoupler 400 switches from the first state to the second state, a push injection end signal is sent to the controller. After receiving the push injection end signal, the controller outputs a second preset PWM signal to control the drive motor 210 to stop working, so as to stop providing driving force to the push block 220, and the drug pushing is completed.

[0064] In some embodiments of the present application, the syringe-based automatic drug pushing device also includes a reset plate 600, on which a lock reset contact 610 is provided, and the lock reset contact 610 and the locking block 330 are arranged in the same horizontal direction; when the locking block 330 and the lock reset contact 610 are in contact, the locking block 330 is reset under the thrust of the lock reset contact 610, so that the lock contact 340 and the inverted V structure are engaged, and the lock tongue 320 is in an extended state.

[0065] After the drug pushing is completed, the driving motor 210 drives the pushing block 220 to retreat to the zero position. In the process of the driving motor 210 driving the pushing block 220 to retreat to the zero position, the second end of the locking block 330 will contact the reset plate 600. Since the reset plate 600 is provided with a lock reset contact 610, the second end of the locking block 330 contacts the lock reset contact 610. When the second end of the locking block 330 contacts the lock reset contact 610, the locking block 330 retreats under the reset force of the lock reset contact 610. In the process of the locking block 330 retreating, the positional relationship between the lock contact 340 and the locking block 330 is switched from the bottom contact between the lock contact 340 and the locking block 330 to the inverted V structure of the lock contact 340 and the locking block 330, and the lock tongue 320 is in an extended state.

[0066] By setting the reset plate 600, after the drug pushing is completed, when the driving motor 210 drives the pushing block 220 to retreat to the zero position, the second end of the locking block 330 contacts the lock reset contact 610, and the locking block 330 returns to the state of being engaged with the lock contact 340 and the inverted V structure under the thrust of the lock reset contact 610, so that the locking block 330 is reset and the locking tongue 320 is in an extended state, thereby ensuring that after the drug pushing is completed, the locking tongue 320 of the locking module 300 is in an extended state, so as to ensure that the locking tongue 320 is in an extended state when the automatic drug pushing device is powered on next time to realize automatic drug pushing, thereby improving the accuracy of automatic drug pushing by the automatic drug pushing device.

[0067] Reference Figure 4 , Figure 4 is a flow chart of an automatic medicine pushing method provided in an embodiment of the present application. The automatic medicine pushing method includes but is not limited to steps S100 to S300. Specifically,

[0068] Step S100: controlling the driving motor to provide driving force for the push block to move, so that the push block pushes the injection push rod to move in the direction of the injection syringe;

[0069] Step S200: in response to the injection ready signal, controlling the driving motor to push the push block at a first speed, so that the push block pushes the injection push rod to push the medicine;

[0070] Step S300: In response to the injection completion signal, the driving motor is controlled to stop working.

[0071] In an embodiment of the present application, an automatic drug pushing method based on a syringe is applied to an automatic drug pushing device based on a syringe, the automatic drug pushing device comprising a syringe bracket for fixing the injection syringe of the syringe; a driving module comprising a driving motor and a push block, the push block being provided with a groove matching the shape of the injection push rod of the syringe, the driving motor being used to provide a driving force for the push block so that the push block pushes the injection push rod to move in the direction of the injection syringe; a locking mechanism comprising a locking module, the locking module and the push block being fitted, the locking module comprising a spring and a locking tongue, the locking tongue and the spring being elastically connected, the locking tongue extending above the opening of the groove due to the elastic force of the spring; when the locking tongue contacts the injection push rod during the movement of the push block, the locking tongue is squeezed by the injection push rod to cause the locking tongue to shrink and give way, and after the injection push rod slides into the groove of the push block, the locking tongue extends and locks the injection push rod under the action of the spring return force. The automatic medicine pushing device also includes a starting point trigger switch and an end point optical coupler. The starting point trigger switch is used to send a push injection ready signal when the starting point trigger switch is triggered by the injection push rod, and the end point optical coupler is used to send a push injection end signal when the end point optical coupler switches from a first state to a second state.

[0072] The automatic drug pushing method includes controlling a driving motor to provide a driving force for a push block to move, so that the push block pushes an injection push rod to move in the direction of an injection syringe. In the process of the push block pushing the injection push rod to move in the direction of the injection syringe, when a push-in preparation signal sent by a starting point trigger switch is received, in response to the push-in preparation signal, the driving motor is controlled to push the push block at a first speed, so that the push block pushes the injection push rod to push the drug; when a push-in end signal sent by an end point optical coupler is received, in response to the push-in end signal, the driving motor is controlled to stop working to stop providing a driving force for the push block, and the push block stops pushing the injection push rod to move, thereby completing the automatic drug pushing.

[0073] In the present application, the automatic drug pushing device is provided with a starting point trigger switch and an end point optical coupler. When the injection push rod contacts the starting point trigger switch, the starting point trigger switch is triggered by the injection push rod, and the starting point trigger switch sends a push injection ready signal to the controller. The controller controls the drive motor to work at a first speed to provide a driving force for the push block, so that the push block pushes the injection push rod to move in the direction of the injection syringe, thereby realizing the automatic pushing of the drug. When the end point optical coupler switches from the first state to the second state, it sends a push injection end signal to the controller, and the controller controls the drive motor to stop working, thereby stopping the push block from continuing to push the injection push rod to move, and the drug pushing ends. By setting the starting point trigger switch and the end point optical coupler, the starting position and the end point of the drug pushing can be determined, and the automatic pushing and the end pushing of the drug can be realized according to the starting position and the end point of the drug pushing, thereby improving the degree of automation of the drug pushing device during the ex vivo transportation of organs.

[0074] Reference Figure 5 , Figure 5is a flowchart of a method for determining a first speed provided in an embodiment of the present application. The method for determining the first speed includes but is not limited to steps S400 to S430. Specifically,

[0075] Step S400: when the driving motor is powered on, the driving motor is controlled to provide driving force for the push block to move, so that the push block pushes the injection push rod to move in the direction of the injection syringe;

[0076] Step S410: when receiving a push injection ready signal, recording the current position as the push injection starting point coordinates;

[0077] Step S420: determining the push stroke length according to the preset coordinates and the push starting point coordinates;

[0078] Step S430: Determine the first speed according to the injection stroke length and the preset injection time.

[0079] In some embodiments of the present application, the automatic drug pushing device also includes a recording module, which is used to record the stroke. The end point optical coupler is set at a first preset position, and the end point optical coupler has preset coordinates. After the drive motor is powered on, the drive motor is controlled to provide driving force for the push block to move, so that the push block pushes the injection push rod to move in the direction of the injection syringe. In the process of the push block pushing the injection push rod to move in the direction of the injection syringe, when the injection push rod of the syringe contacts the starting point trigger switch, the starting point trigger switch is triggered by the injection push rod, and the starting point trigger switch contacts and sends a push injection ready signal. When the push injection ready signal sent by the starting point trigger switch is received, the current position is recorded as the push injection starting point coordinate. It can be understood that the distance between the push injection starting point coordinate and the preset coordinate corresponding to the end point optical coupler is the push injection stroke length. Therefore, the push injection stroke length is determined according to the push injection starting point coordinate and the preset coordinate corresponding to the end point optical coupler, and then the first speed is determined according to the push injection stroke length and the preset push injection time.

[0080] It should be noted that the coordinates of the injection push rod of the syringe are related to the amount of medicine in the injection barrel of the syringe. Since the starting point trigger switch is triggered by the injection push rod, the starting point trigger switch contacts and sends a push-in ready signal. When the push-in ready signal sent by the starting point trigger switch is received, the current position is recorded as the push-in starting point coordinates. Therefore, the amount of medicine in the injection barrel of the syringe is related to the push-in starting point coordinates. The push-in starting point coordinates are variable, and the push-in starting point coordinates change according to the amount of medicine in the injection barrel.

[0081] The push stroke length is determined according to the preset coordinates and the push starting point coordinates, and the first speed is determined according to the push stroke length and the preset push time. Therefore, the first speed can change synchronously according to the amount of drug content in the injection syringe. No matter how much the drug content in the injection syringe is, when the injection push rod of the syringe contacts the starting point trigger switch, the starting point trigger switch is triggered by the injection push rod, and the push starting point coordinates can be accurately recorded. The push stroke length is determined according to the preset coordinates corresponding to the push starting point coordinates and the end point optical coupler, thereby determining the first speed corresponding to the drug content in the injection syringe, and then the push injection can be performed according to the determined first speed, which improves the stability of drug pushing during the organ ex vivo transportation process, and at the same time improves the safety of the organ ex vivo transportation process.

[0082] It should be noted that the preset push injection time can be determined according to the transit time, and the preset push injection time is one of 60 minutes, 90 minutes, and 120 minutes. It can be understood that when the transit time is longer, the preset push injection time is set to be longer, and the longer the preset push injection time is slightly greater than the transit time. When the transit time is shorter, the preset push injection time is set to be shorter, and the longer the preset push injection time is slightly greater than the transit time. Those skilled in the art can determine the size of the preset push injection time according to the actual transit time, and the embodiment of the present application does not limit the size of the preset push injection time.

[0083] Reference Figure 6 , Figure 6 is a flow chart of a push block reset method provided in an embodiment of the present application. The push block reset method includes but is not limited to steps S500 to S530. Specifically,

[0084] Step S500: if it is the first time to power on, collect the state of the optical signal detected by the zero-point optical coupler;

[0085] Step S510: When the optical signal detected by the zero point optical coupler is not cut off, a zero point reset signal is sent;

[0086] Step S520: In response to the zero point reset signal, the motor is controlled to retract so that the push block is reset to a preset zero point position;

[0087] Step S530: When the optical signal detected by the zero point optical coupler is cut off, a zero point reset success signal is sent.

[0088] In some embodiments of the present application, the automatic medicine pushing device also includes a zero-point optical coupler, which is used to detect whether the initial position of the push block is located at the preset zero position after the drive motor is powered on. It can be understood that when it is detected that the light signal is not cut off, a zero-point reset signal is sent to the controller; it is also used to send a zero-point reset success signal to the controller when it is detected that the light signal is cut off. If the drive motor is powered on for the first time, the light signal detected by the zero-point optical coupler is collected. When the light signal detected by the zero-point optical coupler is not cut off, it indicates that the current push block is not at the preset zero position, then a zero-point reset signal is sent, and in response to the zero-point reset signal, the drive motor is controlled to retract so that the push block is reset to the preset zero position, thereby ensuring that the push block of the automatic medicine pushing device is at the preset zero position before executing the automatic medicine pushing method, thereby improving the accuracy of automatic medicine pushing. When the light signal detected by the zero-point optical coupler is cut off, it indicates that the push block is at the preset zero position, and a zero-point reset success signal is sent.

[0089] Reference Figure 7 , Figure 7 It is a structural diagram of a controller 1000 provided in an embodiment of the present application, including a processor 1001, which can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the method provided in the embodiment of the present application; a memory 1002, which can be implemented in the form of a read-only memory 1002 (Read Only Memory, ROM), a static storage device, a dynamic storage device or a random access memory 1002 (Random Access Memory, RAM), etc. The memory 1002 can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1002 and are called by the processor 1001 to execute the embodiments of this application; the input / output interface 1003 is used to implement information input and output; the communication interface 1004 is used to implement communication interaction between this device and other devices, and communication can be achieved through wired methods (such as USB, network cables, etc.) or wireless methods (such as mobile networks, WIFI, Bluetooth, etc.); a bus transmits information between various components of the device (such as the processor 1001, the memory 1002, the input / output interface 1003 and the communication interface 1004); wherein the processor 1001, the memory 1002, the input / output interface 1003 and the communication interface 1004 are connected to each other within the device through the bus.

[0090] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer-readable storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer-readable storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0091] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above-mentioned implementation mode. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the present application. These equivalent deformations or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. An automatic medicine pushing device based on a syringe, characterized in that: include: A syringe holder, used to fix the syringe barrel of the syringe; A driving module, comprising a driving motor and a push block, wherein the push block is provided with a groove matching the shape of the injection push rod of the syringe, and the driving motor is used to provide a driving force for the push block so that the push block pushes the injection push rod to move in the direction of the injection syringe; The locking mechanism comprises a locking module, the locking module is fitted with the push block, the locking module comprises a spring and a locking tongue, the locking tongue is elastically connected to the spring, and the locking tongue extends above the opening of the groove due to the elastic force of the spring; when the locking tongue contacts the injection push rod during the movement of the push block, the locking tongue is squeezed by the injection push rod to shrink and give way, and after the injection push rod slides into the groove of the push block, the locking tongue extends and locks the injection push rod under the action of the spring restoring force.

2. The automatic drug pushing device based on a syringe according to claim 1, characterized in that: The automatic medicine pushing device also includes: A starting point trigger switch, disposed in the groove, the starting point trigger switch being used to send a push injection ready signal to a controller when the starting point trigger switch is triggered by the injection push rod; The end point optical coupler is arranged at a first preset position, and the end point optical coupler is used to send a push injection end signal to the controller when the end point optical coupler switches from a first state to a second state.

3. The automatic drug pushing device based on a syringe according to claim 1, characterized in that: The automatic medicine pushing device also includes: The zero point optocoupler is arranged at a second preset position, and is used to send a zero point reset signal to the controller when it is detected that the optical signal is not cut off; and is also used to send a zero point reset success signal to the controller when it is detected that the optical signal is cut off.

4. The automatic drug pushing device based on a syringe according to claim 1, characterized in that: The locking module further comprises: A locking block and a locking contact, wherein the locking block is embedded in the locking module, and the locking block is provided with an inverted V structure. When the locking contact is engaged with the inverted V structure, the locking tongue is in an extended state, and when the locking contact is in contact with the bottom of the locking block, the locking tongue is in a retracted and yielding state; The end point unlocking contact is set at a third preset position. When the locking block contacts the end point unlocking contact, the locking block retreats under the thrust of the end point unlocking contact, so that the lock contact contacts the bottom of the locking block, and the lock tongue is in a retracted and yielding state.

5. The automatic drug pushing device based on a syringe according to claim 4, characterized in that: Also includes: A reset plate, wherein a lock reset contact is disposed on the reset plate, and the lock reset contact and the locking block are disposed in the same horizontal direction; When the locking block contacts the lock reset contact, the locking block is reset under the thrust of the lock reset contact, so that the lock contact is engaged with the inverted V structure, and the lock tongue is in an extended state.

6. The automatic drug pushing device based on a syringe according to claim 1, characterized in that: Also includes: The syringe support comprises an arc-shaped support, the arc-shaped support forms a bayonet, and the opening of the bayonet is smaller than the diameter of the injection syringe.

7. A syringe-based automatic medicine pushing method, applied to the syringe-based automatic medicine pushing device according to any one of claims 1 to 6, characterized in that: The automatic medicine pushing device based on the syringe further includes a starting point trigger switch and an end point optical coupler, wherein the starting point trigger switch is used to send a push injection ready signal when the starting point trigger switch is triggered by the injection push rod, and the end point optical coupler is used to send a push injection end signal when the end point optical coupler is switched from a first state to a second state. The automatic medicine pushing method includes: Controlling the driving motor to provide driving force for the push block to move, so that the push block pushes the injection push rod to move in the direction of the injection syringe; In response to the injection ready signal, controlling the driving motor to push the push block at a first speed, so that the push block pushes the injection push rod to push the drug; The driving motor is controlled to stop working in response to the injection end signal.

8. The automatic drug pushing method based on a syringe according to claim 7, characterized in that: The automatic medicine pushing device further includes a recording module, which is used to record the travel. The end point optical coupler is set at a first preset position, and the end point optical coupler has a preset coordinate. The first speed is determined by the following method: When the driving motor is powered on, the driving motor is controlled to provide driving force for the push block to move, so that the push block pushes the injection push rod to move in the direction of the injection syringe; When the push injection ready signal is received, the current position is recorded as the coordinates of the push injection starting point; Determine the push stroke length according to the preset coordinates and the push starting point coordinates; The first speed is determined according to the injection stroke length and a preset injection time.

9. The automatic drug pushing method based on a syringe according to claim 7, characterized in that: The automatic medicine pushing device based on the syringe further includes a zero-point optical coupler, and the automatic medicine pushing method further includes: If it is the first time to power on, collect the state of the optical signal detected by the zero-point optical coupler; When the optical signal detected by the zero point optical coupler is not cut off, a zero point reset signal is sent; In response to a zero point reset signal, the motor is controlled to retract so that the push block is reset to a preset zero point position; When the optical signal detected by the zero point optical coupler is cut off, a zero point reset success signal is sent.

10. A controller, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method according to any one of claims 7 to 9 when executing the computer program.

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