WO2021092974A1

WO2021092974A1 - Infusion pump and infusion control method therefor

Info

Publication number: WO2021092974A1
Application number: PCT/CN2019/119282
Authority: WO
Inventors: 左鹏飞; 陈大兵; 郑宏; 张鹏; 胡莲
Original assignee: 深圳迈瑞科技有限公司
Priority date: 2019-11-15
Filing date: 2019-11-18
Publication date: 2021-05-20

Abstract

An infusion pump and a control method therefor. The infusion pump comprises an ultrasonic detection assembly (184, 185), and when a pump door (200) and a pump body (100) are closed, the pump door (200) closes the detection port of the ultrasonic detection assembly (184, 185). When an infusion tube (300) is mounted on the ultrasonic detection assembly (184, 185), the infusion tube (300) is limited in the detection port. Therefore, the infusion tube (300) is difficult to be pulled out of the ultrasonic detection assembly (184, 185). It is ensured that the ultrasonic detection assembly (184, 185) can always detect the liquid status in the infusion tube (300) during infusion; even when the pump door (200) is just opened, the infusion tube (300) is still disposed in the detection port of the ultrasonic detection assembly (184, 185), the ultrasonic detection assembly (184, 185) can still detect the liquid status in the infusion tube (300), and a processor controls, according to an ultrasonic detection signal at this time, a liquid stop assembly (181) to perform a corresponding operation; thus, free flow occurring at the moment when the pump door (200) is opened can be avoided, and higher accuracy can be provided.

Description

Infusion pump and its infusion control method

Technical field

This application relates to the field of medical devices, and in particular to an infusion pump and an infusion control method thereof.

Background technique

As the main infusion product for clinical infusion, infusion pumps are usually equipped with pump doors and liquid stop clamps to ensure the safety of infusions. The pump doors and liquid stop clamps are usually controlled manually. In clinical use, during the infusion or at the end of the infusion, medical staff often need to close the stop clamp of the infusion tube first, and then manually open the pump door to take out the infusion tube for inspection or end the infusion. If the medical staff forget to close the stopper clamp on the infusion tube before opening the pump door, it will cause free flow and cause the patient to be given the wrong dose of medicine, which will cause clinical risks. The above-mentioned operation process needs to be performed by the medical staff personally, which causes operation inconvenience to the medical staff, and the multi-step operation easily distracts the medical staff's attention and affects the safety of clinical infusion.

technical problem

This application mainly provides an infusion pump and an infusion control method of the infusion pump.

Technical solutions

An embodiment of the present application provides an infusion control method of an infusion pump. The infusion pump includes a pump main body and a pump door, and the pump door is installed on the pump main body in a closable and openable manner; The pump body has a pump body shell, a processor, a pump body component, a liquid stop component, a first ultrasonic detection component, and a pump door state detection component; the pump body shell has an infusion tube mounting surface, and the infusion tube mounting surface is used for installation Infusion tube, the liquid stop component, the pump body component and the first ultrasonic detection component are all arranged in the pump body housing, and at least the partial liquid stop component, the at least partial pump body component and the at least partial first ultrasonic detection component The assembly is exposed on the installation surface of the infusion tube; wherein the stopper assembly is used to clamp and release the infusion tube; the installation surface of the infusion tube is provided with a first detection at a position corresponding to the first ultrasonic detection assembly Port, the first ultrasonic detection component is used to detect the liquid condition in the first detection port; the pump body component is used to squeeze the infusion tube to drive the liquid in the infusion tube to move; the state of the pump door The detection component is used to detect the state between the pump door and the pump body; the pump body component, the liquid stop component, the first ultrasonic detection component, and the pump door state detection component are all connected to the processor; Methods include:

Determine the state between the pump door and the pump main body according to the pump door state signal of the pump door state component;

Determine the state of the first detection port according to the first ultrasonic signal of the first ultrasonic detection component;

When the state between the pump door and the pump body is changed from closed to open, if it is determined that at least two positions on the installation surface of the infusion tube are in an anhydrous state and/or no infusion tube state, then The liquid stop component is controlled to release the infusion tube, and one of the positions is the first detection port.

This application also provides

An infusion pump, characterized by comprising a pump main body and a pump door, the pump door being installed on the pump main body in a closable and openable manner;

The pump body has a pump body housing, a processor, a pump body component, a liquid stop component, a first ultrasonic detection component, and a pump door state detection component;

The pump body housing has an infusion tube mounting surface, and the infusion tube mounting surface is used to install the infusion tube; the liquid stop assembly, the pump body assembly, and the first ultrasonic detection assembly are all arranged in the pump body housing, and at least A partial liquid stop component, at least a partial pump body component, and at least a partial first ultrasonic detection component are exposed on the installation surface of the infusion tube;

The liquid stop component is used to clamp and release the infusion tube;

A first detection port is provided at a position corresponding to the first ultrasonic detection component on the mounting surface of the infusion tube, and the first ultrasonic detection component is used to detect the liquid condition in the first detection port;

The pump body assembly is used to squeeze the infusion tube to drive the liquid in the infusion tube to move;

The pump door state detection component is used to detect the state between the pump door and the pump body;

The pump body component, the liquid stop component, the first ultrasonic detection component, and the pump door state detection component are all connected to the processor and controlled by the processor;

The processor is used for when the state between the pump door and the pump body is changed from closed to open, if it is determined that at least two positions on the installation surface of the infusion tube are in an anhydrous state and/or an infusion tube In the infusion tube state, the liquid stop component is controlled to release the infusion tube, and one of the positions is the first detection port.

Beneficial effect

In the infusion pump and its infusion control method in the above embodiments, the infusion pump has a first ultrasonic detection assembly. When the infusion tube is installed on the first ultrasonic detection assembly, the pump door is closed when the pump door and the pump body are closed. The first detection port of the component, the infusion tube is restricted in the first detection port at least in the horizontal direction, to ensure that the first ultrasonic detection component can always detect the liquid condition of the infusion tube during the infusion process, even when the pump door is opened. During the slow process, the infusion tube still cannot be separated from the first detection port, and the first ultrasonic detection component can still detect the liquid condition of the infusion tube. The processor combines the state of the infusion tube or the liquid state in another location according to the ultrasonic detection signal at this time To control the liquid stop component to perform corresponding operations can prevent the pump door from causing free flow during the opening process, and can also eliminate the existence of bubbles in the first detection port, which can more accurately realize the control of the liquid stop clip.

Description of the drawings

1 and 2 are schematic diagrams of the structure of the infusion pump from different perspectives in an embodiment of the application;

FIG. 3 is a flowchart of an infusion control method in an embodiment of the application;

Fig. 4 is a schematic structural diagram of a lock rod assembly of an infusion pump in an embodiment of the application.

Embodiments of the present invention

Hereinafter, the present invention will be further described in detail through specific embodiments in conjunction with the accompanying drawings. Among them, similar elements in different embodiments use related similar element numbers. In the following embodiments, many detailed descriptions are used to make this application better understood. However, those skilled in the art can easily realize that some of the features can be omitted under different circumstances, or can be replaced by other elements, materials, and methods. In some cases, some operations related to this application are not shown or described in the specification. This is to avoid the core part of this application being overwhelmed by excessive descriptions. For those skilled in the art, these are described in detail. Related operations are not necessary, they can fully understand the related operations based on the description in the manual and the general technical knowledge in the field.

In addition, the features, operations, or features described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be sequentially exchanged or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment, and are not meant to be a necessary sequence, unless it is specified that a certain sequence must be followed.

The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application include direct and indirect connection (connection) unless otherwise specified. (It can also be omitted according to the situation)

In this embodiment, in order to prevent the liquid stop assembly from opening unintended when the pump door of the infusion pump is opened, an infusion pump and a control method based on the infusion pump are provided. This method is safer than just relying on the tube in-situ detection components to be set at both ends of the infusion tube installation surface, and then relying on the state of the tube in-situ detection components at both ends to determine the clamping or release of the liquid stop component, because During the infusion process, there may be cases where the infusion tube detaches from both ends. At this time, if the pump door is opened, only relying on the tube in-position detection component to determine the status of the liquid stop component may cause the liquid stop component to release the infusion tube. Lead to the creation of free flow. In the method in the embodiment of the present application, the ultrasonic detection component is introduced to detect the liquid state in the detection port, and the liquid stop component can be controlled more accurately, which is safe and efficient.

The infusion pump includes a pump main body and a pump door. The pump door is installed on the pump main body in a closable and openable manner. For example, as shown in FIG. 1, the pump door 100 is rotatably installed on the pump main body 100 so that the pump door 200 can rotate to It opens and closes with respect to the pump body 100. Of course, the closing and opening method is not limited to this. In some embodiments, the pump door may be closed and opened with the pump body by sliding, turning, folding, or the like. In other embodiments, the pump door and the pump body are connected in a detachable manner, and the pump door is completely detached from the pump body, that is, the open state; the pump door is installed on the pump body, that is, the closed state .

In some embodiments, in order to prevent the pump door from being unintentionally opened during the infusion process and causing infusion safety accidents, a locked state is also included between the pump door and the pump body, so that the pump door and the pump body can be more firmly connected Together.

In some of the embodiments, the pump body further includes a pump body housing, a processor, a pump body component, a liquid stop component, a first ultrasonic detection component, and a pump door state detection component. One side of the casing of the pump main body is an infusion tube installation surface, and the infusion tube installation surface is provided with a space for accommodating the infusion tube, and the infusion tube can be installed. In addition, multiple windows are provided on the installation surface of the infusion tube. The liquid stop component, the pump body component and the first ultrasonic detection component are all arranged in the pump body shell, but their respective at least partial components are respectively exposed in a plurality of windows on the installation surface of the infusion tube. For example, the chuck part of the liquid stop assembly is arranged in the window of the installation surface of the infusion tube, so that the chuck part can be clamped and released with the infusion tube. For example, the pump sheet in the pump body assembly is set in the window on the installation surface of the infusion tube, so that the pump sheet can directly or indirectly (for example, through a waterproof membrane) contact the infusion tube under the control of the drive and transmission parts of the pump body assembly , To squeeze the liquid in the infusion tube to move directionally. For example, the first detection port of the first ultrasonic detection component is set in the window of the installation surface of the infusion tube, and the upper and lower ends of the first detection port are the transmitting end and the receiving end respectively, so that the transmitting end can emit ultrasonic waves through the first detection port. Then received by the receiving end. The pump door status detection component can be provided on the side of the pump body shell in contact with the pump door, such as the upper end of the infusion tube mounting surface. The pump door status detection component can detect whether the pump door is in contact with the pump body in its detection area. It can be to detect the distance between the pump door and the pump body, etc., to determine the state (closed or open) between the pump door and the pump body. The pump door status detection component, the liquid stop component, the pump body component and the first ultrasonic detection component are all connected to the processor, and the processor can receive signals and/or send control signals to the pump door status detection component, the liquid stop component, The pump body component and the first ultrasonic detection component are used to control the pump door state detection component, the liquid stop component, the pump body component and the first ultrasonic detection component.

In some of the embodiments, the flow chart of the infusion control method applicable to the infusion pump is shown in FIG. 3.

S401: Determine the state between the pump door and the pump main body according to the pump door state signal of the pump door state component;

The processor receives the pump door status signal of the pump door status component, and can determine whether the pump door and the pump body are in a closed state or an open state according to the pump door state signal.

S402: Determine the state of the first detection port according to the first ultrasonic signal of the first ultrasonic detection component;

The first ultrasonic sensor includes a transmitting end and a receiving end. The transmitting end sends ultrasonic waves through the first detection port. When the ultrasonic waves pass through the interface of two different media, physical phenomena such as reflection, refraction, and transmission will occur. Due to the large difference in acoustic impedance between liquid and air, ultrasonic waves will be reflected and refracted to a greater extent when they penetrate the interface between liquid and air; and because ultrasonic waves have better penetrability to liquids, take advantage of these physical phenomena , The processor obtains its output amplitude (output voltage) by receiving the first ultrasonic signal fed back by the receiving end, thereby monitoring the energy attenuation of the ultrasonic wave. When the infusion tube is set in the first detection port, when there is water in the infusion tube, the ultrasonic energy attenuation is less than when there is no water in the infusion tube, so the infusion tube has a water state (it can be regarded as full water or tiny bubbles) The output amplitude of the ultrasonic signal under the infusion tube is much larger than the output amplitude of the ultrasonic signal under the anhydrous state of the infusion tube (which can be regarded as a huge gas column); when the infusion tube is not set in the first detection port, the first detection port does not There is a liquid (it can be regarded as a huge gas column), and the energy attenuation of the ultrasonic wave is large enough, so the output amplitude of the ultrasonic signal is also small. Therefore, by comparing the ultrasonic signal with the preset threshold, it can be recognized that the detection port has water state (the infusion tube has water state), or the detection port's anhydrous state (can be the infusion tube anhydrous state, or it can be No infusion tube state).

S403. When the state between the pump door and the pump body is changed from closed to open, if it is determined that at least two positions on the installation surface of the infusion tube are in an anhydrous state and/or no infusion tube state, control the liquid stop assembly When releasing the infusion tube, one of the positions is the first detection port.

According to the pump door status signal, the processor can detect that the state between the pump door and the pump body is changing from closed to open. In some embodiments, the opening and closing of the pump door is driven by a motor, so it may be slow In this slow door opening process, the infusion tube is still in the first detection port, and the first ultrasonic detection component can still detect the liquid state of the first detection port; when the liquid state in the first detection port is no water in the detection port In the state (anhydrous state or no infusion tube state), the processor can simultaneously determine whether to release the infusion tube or clamp the infusion tube in combination with the liquid state of another position on the infusion tube installation surface. When the liquid state at the other position is also an anhydrous state or no infusion tube state, the liquid stop assembly can be driven to release the infusion tube. In this way, the processor controls the liquid stop component to perform corresponding operations according to the ultrasonic detection signal when the pump door is turned from closed to open, combined with the state of the infusion tube or liquid in another position, and can avoid the pump door during the opening process. The free flow is caused, and the situation that bubbles just exist in the first detection port can also be eliminated, and the control of the liquid stop clamp can be realized more accurately.

In some of the embodiments, the pump body further includes a first tube in-situ detection assembly provided on one end of the infusion tube mounting surface. The first ultrasonic detection component is arranged between the liquid stop component and the pump body component. The processor can combine the detection result in the first detection area corresponding to the first tube in-position detection component with the detection result obtained by the first ultrasonic detection component to realize the control of the liquid stop device. Specifically, the processor can control the liquid stop device through The first tube in-position signal of the first tube in-position detection component determines the status of the infusion tube and the infusion tube installation surface in the first detection area (the infusion tube is present or there is no infusion tube), when the processor is closed by the pump door When turned to open, receive the current first tube in-position signal of the first tube in-position detection component to determine that there is no infusion tube in the first detection area at this time, and receive the current first ultrasonic detection signal of the first ultrasonic detection component , To determine that there is no water in the first detection port at this time, you can control the liquid stop assembly to open and release the infusion tube; in this way, it can be predicted that the user is removing the infusion tube, and the infusion tube is released at this time, which is more intelligent This reduces the number of steps the user needs to open the liquid stop component. When the processor is in the process of turning the pump door from closed to open, it receives the current first tube in-position signal of the first tube in-position detection assembly to determine that there is an infusion tube in the first detection area at this time, and then it can control the liquid stop The assembly is closed and the infusion tube is clamped. This will not cause free flow during the opening of the pump door. When the pump door is opened, the processor receives the current first tube in-position signal of the first tube in-position detection component to determine that there is an infusion tube in the first detection area at this time, and then it can control the liquid stop component to close and clamp the infusion For example, the user opens the pump door and installs the infusion tube on the infusion installation surface. At this time, the processor recognizes the presence of the infusion tube in the first detection area through the first tube in-position detection component, and then controls the liquid stop component to close and clamp The infusion tube can automatically clamp the infusion tube when the user installs the tube, which reduces the steps for the user to manually close the liquid stop component, and is intelligent and easy to use.

In some of the embodiments, the pump body further includes a lock rod assembly, the liquid stop assembly is provided with a liquid stop assembly plunger, and the pump door is also provided with a pump door plunger; the lock rod assembly is provided with a corresponding through hole, The plunger of the liquid stop assembly and the pump door plunger can be arranged therein, wherein when the pump door is opened, the pump door plunger will be separated from the lock rod assembly. The lock rod assembly is connected with the processor through a drive motor, and the processor sends a control signal to the drive motor to drive the lock rod assembly to move. When the pump door is opened, the processor recognizes the presence of the infusion tube in the first detection area according to the first tube in-position signal of the first tube in-position component, and then controls the drive motor to drive the lock lever assembly to move to the liquid stop position to stop the liquid. The plunger of the liquid component is close to the opposite side, so that the liquid stop component is closed and the infusion tube is automatically clamped. Then the pump door is closed on the pump body, and the processor recognizes that the pump door is closed according to the signal of the pump door status detection component, and then continues to drive the motor to drive the lock lever assembly to move to the lock lever position to fix the pump door plunger. Inside the lock lever assembly. Then the processor will control the pressure detection component set on the pump body to detect the pressure in the infusion tube. If the pressure detection result meets the conditions, the processor will continue to drive the motor to drive the lock lever assembly to move when the infusion start instruction is received. To the liquid-passing position, so that the plunger of the liquid-stop assembly is far away from the opposite side, so that the liquid-stop assembly can be opened and infusion can be performed. If the pressure detection result does not meet the conditions at this time, the processor will stay in this position, and then send a control signal to the alarm prompt module set in the pump body to control it to emit a sound or visual alarm signal. Then when the processor receives the user's instruction to stop the infusion, it controls the liquid stop assembly to clamp the infusion tube, and at the same time, the drive motor drives the lock rod assembly to move in the opposite direction to the unlocked position, so that the pump door plunger is separated from the lock rod assembly, so that the pump The door is turned from the locked state to the closed state. During the process of the pump door being turned from closed to open, the processor detects that there is no water in the first detection port and the first detection area according to the signal of the first ultrasonic detection component. If there is no infusion tube, continue to drive the lock rod assembly to move in the above direction. During the movement, the plunger of the liquid stop component is restricted by the through hole to move the stop liquid plunger away from the opposite side, so that the liquid stop component releases the infusion tube . When the pump door is turned from closed to open, the processor recognizes that there is an infusion tube in the first detection area according to the signal of the first ultrasonic detection assembly, and it will keep the lock lever assembly still, so that the liquid stop assembly continues to hold the clamp. Tighten the infusion tube. In short, the liquid stop position, door lock position, and liquid flow position on the lock lever assembly are arranged in sequence.

In some of the embodiments, the pump body further includes a first tube in-position detection component provided on one end of the infusion tube mounting surface and a second tube in-position detection component provided on the other end of the infusion tube mounting surface. The first ultrasonic detection component is arranged between the liquid stop component and the pump body component. The processor can combine the detection result in the first detection zone corresponding to the first tube in-place detection component, the detection result in the second detection zone corresponding to the second tube in-place detection component, and the detection result obtained by the first ultrasonic detection component. The detection result is used to control the liquid stop device. Specifically, the processor uses the first and second tube presence signals of the first and second tube presence detection components to determine the infusion tube and the infusion in the first detection zone The state of the tube mounting surface (there is an infusion tube or there is no infusion tube), when the processor turns the pump door from closed to open, it receives the first and second tubes in place of the first and second tube in-position detection components Signal to determine that there is no infusion tube in the first and second detection areas at this time, and to receive the current first ultrasonic detection signal of the first ultrasonic detection component to determine that the first detection port is in an anhydrous state at this time, and then it can be controlled The liquid stop component is opened to release the infusion tube; in this way, it can be more accurately predicted that the user is removing the infusion tube, and the infusion tube is released at this time, which is more intelligent and reduces the user's need to open the liquid stop component. When the processor is in the process of turning the pump door from closed to open, it receives the current first and second tube presence signals of the first and second tube presence detection components to determine whether the first and second detection areas are in position at this time. If there is an infusion tube, the liquid stop component can be controlled to close and the infusion tube can be clamped. This will not cause free flow during the opening of the pump door. When the pump door is opened, the processor receives the current first and second tube presence signals of the first and second tube in-position detection components to determine that there are infusion tubes in the first and second detection areas at this time. Control the liquid-stop assembly to close and clamp the infusion tube; for example, the user opens the pump door and installs the infusion tube on the infusion installation surface, and the processor recognizes the first and second tubes through the first and second tube in-position detection components. If there is an infusion tube in the detection area, the liquid stop assembly is controlled to close and the infusion tube is clamped, so that the infusion tube is automatically clamped during the user's installation of the tube, which reduces the steps for the user to manually close the liquid stop assembly, and is intelligent and easy to use.

In some of the embodiments, the pump body further includes a lock rod assembly, the liquid stop assembly is provided with a liquid stop assembly plunger, and the pump door is also provided with a pump door plunger; the lock rod assembly is provided with a corresponding through hole, The plunger of the liquid stop assembly and the pump door plunger can be arranged therein, wherein when the pump door is opened, the pump door plunger will be separated from the lock rod assembly. The lock rod assembly is connected with the processor through a drive motor, and the processor sends a control signal to the drive motor to drive the lock rod assembly to move. When the pump door is opened, the processor recognizes the presence of the infusion tube in the first and second detection areas according to the first and second tube in-position signals of the first and second tube in-position components, and then controls the drive motor to drive the lock rod assembly Move to the liquid stop position so that the plunger of the liquid stop component is close to the opposite side, so that the liquid stop component is closed and the infusion tube is automatically clamped. Then the pump door is closed on the pump body, and the processor recognizes that the pump door is closed according to the signal of the pump door status detection component, and then continues to drive the motor to drive the lock lever assembly to move to the lock lever position to fix the pump door plunger. Inside the lock lever assembly. Then the processor will control the pressure detection component set on the pump body to detect the pressure in the infusion tube. If the pressure detection result meets the conditions, the processor will continue to drive the motor to drive the lock lever assembly to move when the infusion start instruction is received. To the liquid-passing position, so that the plunger of the liquid-stop assembly is far away from the opposite side, so that the liquid-stop assembly can be opened and infusion can be performed. If the pressure detection result does not meet the conditions at this time, the processor will stay in this position, and then send a control signal to the alarm prompt module set in the pump body to control it to emit a sound or visual alarm signal. Then when the processor receives the user's instruction to stop the infusion, it controls the liquid stop assembly to clamp the infusion tube, and at the same time, the drive motor drives the lock rod assembly to move in the opposite direction to the unlocked position, so that the pump door plunger is separated from the lock rod assembly, so that the pump The door turns from the locked state to the closed state. When the pump door is turned from closed to open, the processor detects that there is no water in the first detection port according to the signal of the first ultrasonic detection component, and the first and second If there is no infusion tube in the detection area, continue to drive the lock rod assembly to move in the above direction. During the movement, the plunger of the liquid stop component is restricted by the through hole to move the stop liquid plunger away from the opposite side, so that the liquid stop component Release the infusion tube. When the pump door is turned from closed to open, the processor recognizes the presence of the infusion tube in the first and second detection areas according to the signal of the first ultrasonic detection assembly, and then keeps the lock lever assembly in place to make the liquid stop assembly Continue to hold the infusion tube clamped. In short, the liquid stop position, door lock position, and liquid flow position on the lock lever assembly are arranged in sequence.

Please refer to FIG. 4, in an embodiment, the lock rod assembly 150 is installed on the pump body bracket 120, and a lock 220 is provided on the corresponding pump door bracket 211, and the lock rod assembly 150 is matched with the lock 220的锁hook151. The drive mechanism drives the lock rod assembly 150 to move, so that the lock hook 151 and the lock catch 220 are locked and unlocked.

In some of the embodiments, the pump body further includes a second ultrasonic detection assembly that is installed in the same manner as the first ultrasonic detection assembly, and is installed in the pump body and at least partially The installation surface of the infusion tube. The first ultrasonic detection component and the second ultrasonic detection component can be arranged on one side or both sides of the pump body component, and the detection position corresponding to the second ultrasonic detection component is the second detection port.

The processor can combine the detection results obtained by the first and second ultrasonic detection components to realize the control of the liquid stop device. Specifically, when the pump door is switched from closed to open, the processor receives the first and second The current first and second ultrasonic detection signals of the ultrasonic detection component are used to determine that the first and second detection ports are in an anhydrous state at this time, and the liquid stop component can be controlled to open and release the infusion tube; in this way, if the first The detection port and the second detection port are both in an anhydrous state, and it can be predicted that the user is dialing out the infusion tube. At this time, the processor controls the liquid stop component to release the infusion tube, which is more intelligent and reduces the need for the user to open the liquid stop component. step. When the processor receives the current first or second ultrasonic signal of the first or second ultrasonic detection component during the process of turning the pump door from closed to open, it determines that at least one of the first or second detection areas is present at this time. In the water state, the liquid stop component can be controlled to close and the infusion tube can be clamped. This will not cause free flow during the opening of the pump door. When the pump door is opened, the processor receives the current first and second ultrasonic signals of the first and second ultrasonic detection components to determine that there is water in the first and second detection ports at this time, and then the liquid stop can be controlled The component is closed and the infusion tube is clamped; for example, the user opens the pump door and installs the infusion tube on the infusion installation surface. At this time, the processor recognizes that the first and second detection ports are both available through the first and second ultrasonic detection components. In the water state, the liquid stop assembly is controlled to close and the infusion tube is clamped, so that the infusion tube is automatically clamped during the user's installation of the tube, which reduces the steps for the user to manually close the liquid stop assembly, and is intelligent and easy to use.

In some of the embodiments, the pump body further includes a lock rod assembly, the liquid stop assembly is provided with a liquid stop assembly plunger, and the pump door is also provided with a pump door plunger; the lock rod assembly is provided with a corresponding through hole, The plunger of the liquid stop assembly and the pump door plunger can be arranged therein, wherein when the pump door is opened, the pump door plunger will be separated from the lock rod assembly. The lock rod assembly is connected with the processor through a drive motor, and the processor sends a control signal to the drive motor to drive the lock rod assembly to move. When the pump door is opened, the processor recognizes that the first and second detection ports are in the water state according to the first and second ultrasonic signals of the first and second ultrasonic components, and then controls the drive motor to drive the lock rod assembly to move to the stop. The position of the liquid so that the plunger of the liquid stop component is close to the opposite side, so that the liquid stop component is closed and the infusion tube is automatically clamped. Then the pump door is closed on the pump body, and the processor recognizes that the pump door is closed according to the signal of the pump door status detection component, and then continues to drive the motor to drive the lock lever assembly to move to the lock lever position to fix the pump door plunger. Lock the pump door inside the lock lever assembly. Then the processor will control the pressure detection component set on the pump body to detect the pressure in the infusion tube. If the pressure detection result meets the conditions, the processor will continue to drive the motor to drive the lock lever assembly to move when the infusion start instruction is received. To the liquid-passing position, so that the plunger of the liquid-stop assembly is far away from the opposite side, so that the liquid-stop assembly can be opened and infusion can be performed. If the pressure detection result does not meet the conditions at this time, the processor will stay in this position, and then send a control signal to the alarm prompt module set in the pump body to control it to emit a sound or visual alarm signal. Then when the processor receives the user's instruction to stop the infusion, it controls the liquid stop assembly to clamp the infusion tube, and at the same time, the drive motor drives the lock rod assembly to move in the opposite direction to the unlocked position, so that the pump door plunger is separated from the lock rod assembly, so that the pump The door turns from the locked state to the closed state. When the pump door is turned from closed to open, the processor detects that there is no water in the first detection port according to the signals of the first and second ultrasonic detection components, and then continues The lock rod assembly is driven to continue to move. During the movement, the plunger of the liquid stop component is restricted by the through hole to move the stop liquid plunger away from the opposite side, so that the liquid stop component releases the infusion tube. When the pump door is turned from closed to open, the processor recognizes that there is water in the first or second detection port according to the signals of the first and second ultrasonic detection components, and it will keep the lock lever assembly in place. Make the liquid stop assembly continue to clamp the infusion tube. In short, the liquid stop position, door lock position, and liquid flow position on the lock lever assembly are arranged in sequence.

In some of the embodiments, referring to FIG. 1, the infusion pump includes a pump body 100 and a pump door 200. Generally, the pump door 200 is rotatably installed on the pump body 100 so that the pump door 200 can be rotated to open and close the pump door 200. Of course, in some embodiments, the lockable and openable manner is not limited to the pump door 200 being rotatably connected to the pump main body 100. The pump door 200 may be closed and opened with the pump main body 100 by sliding, turning, folding, etc. . In addition, in other embodiments, the closing and opening method may also be to connect the pump door 200 to the pump body 100 in a detachable manner, that is, in the open state, the pump door 200 can be completely detached from the pump body 100 , When it needs to be closed, install the pump door 200 on the pump body 100.

In some of these embodiments, in order to prevent the pump door 200 from being unintentionally opened during the infusion process, resulting in infusion safety accidents, the pump door 200 can be further installed on the pump body 100 in a lockable manner. When the pump door 200 is moved to the corresponding closed position, it can be locked with the pump body 100 to start the infusion operation.

Please continue to refer to Figure 1, the pump body 100 has a pump body housing 110, a processor (not shown in the figure), a pump body assembly 170, a liquid stop assembly 181, at least one ultrasonic detection assembly 184, 185, a lock lever assembly (Figure Not shown in) and pump door status detection components (not shown in the figure). The pump body housing 110 has an infusion tube installation surface 111, and the infusion tube 300 is installed on the infusion tube installation surface 111.

The pump body housing 110 has an installation cavity for installing various components. The side of the pump body housing 110 facing the pump door 200 is the front cover 111. In the structure shown in FIG. 1, the front cover 111 serves as the infusion tube mounting surface of this embodiment. Of course, in other embodiments, the infusion tube mounting surface 111 may also be provided in other positions of the pump body housing 110. The front cover 111 has an infusion tube installation structure for installing the infusion tube 300 and a pump body installation position for installing the pump body assembly 170. The infusion tube installation structure is used to stabilize the infusion tube 300 on the pump body 100 for infusion and various tests. As shown in FIG. 1, the infusion tube 300 is placed on the infusion tube installation structure of the front cover 111. Generally, the infusion tube installation structure can be a clamping structure or other installation structures, and it will not be repeated here. The installation position of the pump body is usually an installation window, and the part of the pump body 100 for squeezing the infusion tube 300 can extend from the installation window 1111 to squeeze the infusion tube 300.

The processor is the entire control center of the infusion pump, which usually has a processor and related control circuits. The processor is connected with other modules, components, or mechanisms that need to be controlled, so as to control these modules, components, or mechanisms according to system settings.

The liquid stop component 181, the pump body component 170, and the ultrasonic detection components 184, 185 are all arranged at the infusion tube mounting surface 111; the liquid stop component 181 is used to clamp and release the infusion tube 300; the pump body component 170 is used to squeeze the infusion tube The tube 300 drives the liquid in the infusion tube 300 to move; the lock lever assembly is used to lock the pump door 200 and the pump body 100; the pump door state detection assembly is used to detect whether the pump door 200 is closed with the pump body 100. The pump door state detection component can adopt various structures capable of realizing position detection, such as Hall elements. The pump body component 170, the liquid stop component 181, the ultrasonic detection components 184, 185, the lock rod component, and the pump door status detection component are all connected to the processor and controlled by the processor. When the pump door state detection component detects that the pump door 200 is separated from the pump body 100, the processor controls the liquid stop component 181 to clamp and open the infusion tube 300 according to the detection result of the tube presence detection component.

Wherein, the ultrasonic detection components 184 and 185 are used to detect the liquid condition in the infusion tube 300. The ultrasonic detection components 184 and 185 have detection ports for placing the infusion tube 300, and the opening of the detection port is set toward the pump door 200, When the door 200 and the pump body 100 are closed, the pump door 200 closes the detection port, and the infusion tube 300 is placed in the detection port. For example, when the pump door 200 and the pump body 100 are closed, the ultrasonic detection components 184 and 185 have detection ports at least in the upper limit of the direction toward the pump door, and the infusion tube 300 is restricted at least in the direction toward and away from the pump door. Inside the detection port. The detection port can be individually enclosed by the ultrasonic detection components 184 and 185, or can be respectively enclosed by the ultrasonic detection components 184 and 185 together with other components, for example, by means of the infusion tube mounting surface 111 and the pump door 200.

Among them, when the infusion tube is set in the detection port, the processor can use the ultrasonic signal fed back by the ultrasonic detection component to determine the attenuation of the ultrasonic wave after passing through the infusion tube, so as to determine whether there is no water in the infusion tube (the infusion tube is in an anhydrous state). When the infusion tube is not set in the detection port, the processor can still use the ultrasonic signal fed back by the ultrasonic detection component to determine the attenuation of the ultrasonic wave after passing through the detection port, so as to determine that there is no Water body (without infusion tube state). The processor can control the release of the liquid stop component in the anhydrous state and the non-tube state (collectively referred to as the liquid condition) of the infusion tube; when the infusion tube has water, the processor can control the clamping of the liquid stop component. Among them, the infusion tube has the water state, the infusion tube anhydrous state, and the infusion tube state is collectively referred to as the liquid state.

When the infusion tube 300 is installed on the ultrasonic detection components 184 and 185, it is confined in the detection port at least in the horizontal direction. Therefore, it is difficult for the infusion tube 300 to be pulled out of the ultrasonic detection components 184 and 185 in the horizontal direction. Even if in some cases, the infusion tube 300 is displaced due to pulling or other reasons, it will not be separated from the detection ports of the ultrasonic detection components 184 and 185. Therefore, the ultrasonic detection components 184 and 185 can accurately determine the position of the infusion tube 300. status.

For example, in one embodiment, the detection ports of the ultrasonic detection components 184 and 185 are C-shaped notches, and the opening of the C-shaped notch faces the pump door 200. When the pump door 200 and the pump body 100 are closed, the opening of the C-shaped notch is blocked. , Restrict the infusion tube 300 in the C-shaped notch at least in the horizontal direction.

In some embodiments, when the pump door 200 and the pump body 100 are closed, the detection port may also be a completely closed cavity to prevent the infusion tube 300 from falling from the detection port in other directions.

Based on the above infusion pump, this embodiment provides an infusion control method, which includes:

Tube taking step: When the processor detects that the pump door 200 and the pump body 100 are changed from closed to open, and the ultrasonic detection components 184 and 185 detect air bubbles, the processor controls the liquid stop component 181 to open and release the infusion tube 300.

The processor detects that the pump door 200 and the pump body 100 are changed from closed to open, which can be realized by interacting with the lock lever assembly and the pump door state detecting assembly.

Further, in the tube taking step, when the processor detects that the pump door 200 and the pump body 100 are changed from closed to open, and the ultrasonic detection components 184 and 185 do not detect air bubbles, the processor controls the liquid stop component 181 to clamp the infusion Pipe 300. The ultrasonic detection components 184, 185 do not detect air bubbles, which means that the infusion tube 300 is still placed on the ultrasonic detection components 184, 185, indicating that the infusion tube 300 has not been removed at this time, so the processor controls the liquid stop component 181 to clamp Tighten the infusion tube 300 to avoid free flow of liquid in the infusion tube 300.

In this control method, when the pump door 200 is opened, based on the detection results of the ultrasonic detection components 184 and 185, it is determined whether the infusion tube 300 accidentally falls off or the user takes it off actively. When the pump door 200 is opened, only when the pump door state detection component detects that the pump door 200 is separated from the pump body 100, and the ultrasonic detection components 184, 185 detect air bubbles (that is, there is no water in the infusion tube 300 or there is no infusion tube 300) The processor controls the opening of the liquid stop assembly 181, which can prevent the liquid stop assembly 181 from opening in an undesired situation, causing free flow of liquid in the infusion tube 300, thereby causing irreparable damage to the patient.

Of course, the infusion control method shown in this embodiment further includes a tube installation step, and the tube installation step can be implemented by using existing operations and control procedures. In an embodiment of the present application, the tube installation step is specifically as follows: when the pump door status detection component detects that the pump door 200 is separated from the pump body 100, all the tube presence detection components detect that the infusion tube 300 is in place, and the ultrasound When the detection components 184 and 185 do not detect bubbles, the processor controls the liquid stop component 181 to clamp the infusion tube 300.

In one embodiment, in the infusion control method, when the pump door 200 is closed to the pump body 100, the two can be manually locked to keep the two closed. Of course, the two can also be automatically locked through an automatic locking structure. The automatic door lock step can be implemented in accordance with the existing operation and control procedures. However, in an embodiment of the present application, the automatic door lock step is specifically as follows: when the pump door state detection component detects that the pump door 200 and the pump body 100 are closed, the processor controls the lock lever assembly to lock the pump door 200. The lock rod assembly can be driven by a special drive mechanism, such as a motor.

In this embodiment, the ultrasonic detection components 184 and 185 not only function to detect bubbles in the infusion tube 300, but also can assist in determining the position of the infusion tube 300. Without adding more components, the operational safety of the infusion pump is improved. When using the infusion pump and the infusion control method, in some embodiments, the tube in-situ detection assembly can be omitted, so as to save parts, simplify the structure, and make the infusion pump more miniaturized and compact.

In another embodiment, the pump body 100 can also be equipped with a tube in-position detection component, and the state of the infusion tube 300 can be determined by the joint action of the tube in-position detection component and the ultrasonic detection components 184 and 185. There can be at least one tube in-situ detection component, which can be arranged at any position of the infusion tube installation surface 111, and is usually arranged on one or both ends of the infusion tube installation surface 111.

In an embodiment, the pump body 100 further includes at least one tube in-position detection assembly 186, 187, and the tube in-position detection assembly 186, 187 is used to detect whether the infusion tube 300 is in place. In the tube taking step, when the processor detects that the pump door 200 and the pump body 100 are changed from closed to open, at least one of the tube in-position detection components 186 and 187 detects that the infusion tube 300 is in position, and the ultrasonic detection components 184 and 185 detect that the infusion tube 300 is in place. When there is a bubble, the processor controls the liquid stop component 181 to open, and the infusion tube 300 is released.

In an embodiment, the pump body 100 further includes at least one tube in-position detection component 186, 187, the tube in-position detection component 186, 187 is used to detect whether the infusion tube 300 is in place; in the tube-taking step, when the processor detects When the pump door 200 and the pump body 100 are changed from closed to open, at least one of the tube presence detection components 186, 187 detects that the infusion tube 300 is not in place, and the ultrasonic detection components 184, 185 do not detect bubbles, the processor controls the liquid stop The assembly 181 clamps the infusion tube 300.

Specifically, in the embodiment where the tube presence detection components 186 and 187 are added, the infusion control method specifically includes the following steps:

Tube installation steps: when the pump door 200 and the liquid stop assembly 181 are opened, the tube in-position detection components 186 and 187 periodically detect the status of the infusion tube 300. If the tube in-position detection components 186 and 187 at one or both ends of the infusion pump body are both detected When the infusion tube 300 is in place and the liquid stop component 181 is in an open state, the processor controls the liquid stop component 181 to close, preventing the user from unintended liquid entering the patient after installing the infusion tube 300;

Automatic door lock steps: when the pump door 200 is closed, the infusion pump triggers the pump door status detection component, and the pump door status detection component feeds back the closing signal of the pump door 200 to the processor, and the processor controls the infusion pump closing mechanism to lock the pump door 200 to ensure The pump door 200 is reliably locked.

Steps to take the tube: After the pump door 200 is closed to open, the tube in-position detection components 186 and 187 periodically detect the status of the infusion tube 300. If at least one tube in-position detection component 186, 187 does not detect that the infusion tube 300 is installed in the infusion pump The ultrasonic detection components 184, 185 between the pump body assembly 170 and the tube in-position detection components 186, 187 (can also be installed in other positions) detect the presence of air bubbles (there is no water in the infusion tube 300 or the infusion tube 300 is Remove), the processor controls the opening of the liquid stop assembly 181, which is convenient for the user to take out the infusion tube 300 or install the infusion tube 300; if the tube presence detection components 186 and 187 detect that the infusion tube 300 is installed in the infusion pump, then the door will be opened and processed The device controls the liquid stop assembly 181 to close, shuts off the infusion path of the infusion tube 300, and prevents the unintended infusion of liquid into the patient's body.

Further, please refer to FIG. 1. In an embodiment, the tube in-position detection components are at least two 186 and 187, which are the upper tube in-position detection component 186 and the lower tube in-position detection component 187, respectively. The detection component 186 and the down tube in-position detection component 187 are respectively arranged at the outermost ends on both sides of the infusion tube installation surface 111.

Further, please refer to FIG. 1. In an embodiment, for ease of description, the present application divides the front cover 111 into an upstream area and a downstream area according to the liquid flow direction of the infusion tube 300 and the pump body assembly 170 as the boundary, that is, the infusion tube The part where the liquid flows to the position of the pump body assembly 170 in 300 is the upstream 301, and the part that flows away from the position of the pump body assembly 170 is the downstream 302. The area corresponding to the front cover 111 and the upstream 301 of the infusion tube 300 is the upstream area. The area corresponding to the downstream 302 of the infusion tube 300 is the downstream area. In the angle shown in FIG. 1, the liquid in the infusion tube 300 flows from right to left, the part of the front cover 111 on the right side of the pump body assembly 170 is the upstream area, and the part on the left side of the pump body assembly 170 is the downstream area. Wherein, the liquid stop component 181 is located in the downstream area of the front cover 111 and is exposed from the front cover 111 so as to stop the flow of liquid in the transfusion tube 300. In terms of the liquid flow direction in the infusion tube 300, the liquid stop assembly 181 is arranged downstream of the pump body assembly 170, which is beneficial to intercept the flow of more liquid. When the infusion is not needed, the fluid flow in the tube can be quickly stopped, preventing too much fluid from flowing into the patient. In particular, the liquid stop component 181 is arranged on the outer side of the downstream area as much as possible, and when the infusion is not required, the flow of liquid to the patient is reduced as much as possible to ensure product safety.

Further, referring to FIG. 1, in an embodiment, the ultrasonic detection assembly includes an upper ultrasonic inspection assembly 184 and a lower ultrasonic inspection assembly 185. The upper ultrasonic inspection assembly 184 is located in the upstream area of the infusion tube installation surface 111, and the lower ultrasonic inspection assembly 185 It is located in the downstream area of the infusion tube installation surface 111 and upstream of the liquid stop assembly 181.

Further, please refer to FIG. 1. In an embodiment, the pump body 100 further includes an upper pressure detection component 182 and a lower pressure detection component 183 to detect the pressure of the liquid in the infusion tube 300; the upper pressure detection component 182 is located on the installation surface of the infusion tube In the upstream area of 111, the down pressure detection assembly 183 is located in the downstream area of the infusion pipe installation surface 111.

Further, referring to FIG. 1, in one embodiment, the lower pressure detection component 183 is located between the liquid stop component 181 and the lower ultrasonic detection component 185, and the upper pressure detection component 182 is located upstream of the upper ultrasonic detection component 184.

On the other hand, an embodiment provides another infusion control method of an infusion pump. 1 and 2, in this embodiment, the infusion pump includes a pump main body 100 and a pump door 200, and the pump door 200 is installed on the pump main body 100 in a lockable and openable manner. The pump body 100 has a pump body housing 110, a processor (not shown), a pump body assembly 170, a liquid stop assembly 181, at least one ultrasonic detection assembly 184, 185, a lock lever assembly (not shown), and a pump door Status detection component (not shown). The pump body housing 110 has an infusion tube installation surface 111, the infusion tube 300 is installed on the infusion tube installation surface 111, the liquid stop component 181, the pump body component 170, and the tube in-position detection components 186, 187 are all installed on the infusion tube installation surface 111 . The liquid stop assembly 181 is used to clamp and release the infusion tube 300. The tube in-position detection components 186 and 187 are used to detect whether the infusion tube 300 is in place, and the pump body assembly 170 is used to squeeze the infusion tube 300 to drive the liquid in the infusion tube 300 to move. The lock lever assembly is used to lock the pump door 200 and the pump body 100. The pump door status detection component is used to detect whether the pump door 200 is closed with the pump body 100. The pump body component 170, the liquid stop component 181, the tube in-position detection components 186, 187, the lock lever component, and the pump door status detection component are all connected to the processor and controlled by the processor.

Based on the above infusion pump, the infusion control method includes:

Tube taking step: When the processor receives the signal to open the pump door 200, regardless of whether the infusion tube 300 is detected by the tube presence detection components 186 and 187, the processor controls the lock lever assembly to open the pump door 200 and controls the liquid stop assembly 181 clamp the infusion tube 300.

In this embodiment, when the pump door 200 is closed, no matter whether the infusion tube 300 falls from the tube presence detection components 186, 187, when the pump door 200 is opened, the liquid stop component 181 is controlled to clamp the infusion tube 300, just in case.

In this embodiment, the infusion pump can omit the ultrasonic detection components 184, 185, or be provided with the ultrasonic detection components 184, 185, but the ultrasonic detection components 184, 185 do not necessarily have a closed detection port, it only needs to be able to realize the infusion The detection of air bubbles in the tube 300 is sufficient. Of course, in some embodiments, the ultrasonic detection components 184 and 185 can also be combined with the tube taking step of this implementation in the manner of the above-mentioned embodiment.

Further, in an embodiment, the pump body 100 and/or the pump door 200 have an alarm prompt module (the speaker 124 shown in FIG. 2 may also display a screen, an indicator light, etc.); in the tube removal step, when processing When the device receives a signal to open the pump door 200, if the tube presence detection components 186 and 187 detect that the infusion tube 300 is not in place, the processor controls the alarm prompt module to send a signal that the infusion tube 300 is not in place.

When the user adjusts the infusion tube 300 to the correct position according to the prompt signal, the processor can control the alarm prompt module to stop prompting according to the detection signal of the tube in-position detection components 186 and 187.

Further, in an embodiment, the infusion control method includes:

Tube installation steps: when the pump door status detection component detects that the pump door 200 is separated from the pump body 100, and all the tube in-position detection components 186 and 187 detect that the infusion tube 300 is in place, the processor controls the liquid stop component 181 to clamp the infusion tube 300.

Further, in an embodiment, the infusion control method includes:

Automatic door lock step: when the pump door state detection component detects that the pump door 200 and the pump body 100 are closed, the processor controls the lock lever assembly to lock the pump door 200.

On the other hand, an embodiment provides another infusion control method of an infusion pump. Please refer to Figures 1 and 2. In this embodiment, the infusion pump includes a pump body 100 and a pump door 200. The pump body 100 and/or the pump door 200 have an alarm prompt module (the speaker 124 shown in Figure 2 can also display a screen , Indicator lights, etc.); the pump door 200 is installed on the pump body 100 in a lockable and openable manner; the pump body 100 has a pump body housing 110, a processor (not shown), a pump body assembly 170, a liquid stop assembly 181, Tube in-position detection components 186, 187, lock lever components (not shown), and pump door status detection components (not shown). The pump body housing 110 has an infusion tube mounting surface 111, and the infusion tube 300 is installed on the infusion tube mounting surface 111 Above, the liquid stop component 181, the tube in-position detection components 186, 187, and the pump body component 170 are all arranged at the infusion tube installation surface 111. The liquid stop component 181 is used to clamp and release the infusion tube 300, and the tube in-position detection component 186 187 is used to detect whether the infusion tube 300 is in place, the pump body assembly 170 is used to squeeze the infusion tube 300 to drive the liquid in the infusion tube 300 to move, and the lock lever assembly is used to lock the pump door 200 and the pump body 100, and the pump door status The detection component is used to detect whether the pump door 200 is closed with the pump body 100. The pump body component 170, the liquid stop component 181, the tube in-position detection components 186, 187, the lock lever component and the pump door status detection component are all connected to the processor, The processor controls.

Based on the above infusion pump, the infusion control method includes:

Steps to take the tube: when the processor receives the signal to open the pump door 200, if the tube in-position detection components 186 and 187 detect that the infusion tube 300 is not in place, the processor controls the lock lever assembly to lock the pump door 200, and controls the liquid stop assembly 181 to clamp The infusion tube 300 is tightened, and the alarm notification module is controlled to send a signal that the infusion tube 300 is not in place.

In this embodiment, when the user adjusts the infusion tube 300 to the correct position, the processor controls the lock lever assembly to open the pump door 200, and then opens the liquid stop assembly 181.

In an embodiment, the infusion control method includes:

Tube installation steps: When the pump door status detection component detects that the pump door 200 is separated from the pump body 100, and all the tube in-position detection components 186, 187 detect that the infusion tube 300 is in place, the processor controls the liquid stop component 181 to clamp the infusion tube 300.

In an embodiment, the infusion control method includes:

The first ultrasonic detection component referred to in this application may be one of the upper ultrasonic detection component or the lower ultrasonic detection component, and the second ultrasonic detection component may be the other of the upper ultrasonic detection component or the lower ultrasonic detection component.

The above uses specific examples to illustrate the application, which are only used to help understand the application, and are not used to limit the application. For those of ordinary skill in the art, according to the idea of the present application, the above-mentioned specific implementation manners can be changed.

Claims

An infusion control method of an infusion pump, characterized in that the infusion pump includes a pump body and a pump door, the pump door is installed on the pump body in a closable and open manner; the pump body has a pump body A housing, a processor, a pump body assembly, a liquid stop assembly, a first ultrasonic detection assembly, and a pump door state detection assembly; the pump body housing has an infusion tube mounting surface, and the infusion tube mounting surface is used to install the infusion tube. The liquid stop component, the pump body component, and the first ultrasonic detection component are all arranged in the pump body housing, and at least a partial liquid stop component, at least a partial pump body component, and at least a partial first ultrasonic detection component are exposed in the pump body housing. The installation surface of the infusion tube; wherein the liquid stop assembly is used to clamp and release the infusion tube; the installation surface of the infusion tube is provided with a first detection port at a position corresponding to the first ultrasonic detection assembly, and the first detection port is provided on the installation surface of the infusion tube. An ultrasonic detection component is used to detect the liquid condition in the first detection port; the pump body component is used to squeeze the infusion tube to drive the liquid in the infusion tube to move; the pump door state detection component is used to detect The state between the pump door and the pump body; the pump body assembly, the liquid stop assembly, the first ultrasonic detection assembly, and the pump door state detection assembly are all connected to the processor; the method includes:

Determine the state between the pump door and the pump main body according to the pump door state signal of the pump door state component;

Determine the state of the first detection port according to the first ultrasonic signal of the first ultrasonic detection component;

When the state between the pump door and the pump body is changed from closed to open, if it is determined that at least two positions on the installation surface of the infusion tube are in an anhydrous state and/or no infusion tube state, then The liquid stop component is controlled to release the infusion tube, and one of the positions is the first detection port.
The method according to claim 1, wherein the infusion pump further comprises a first tube in-situ detection component arranged on one end of the infusion tube mounting surface; on the infusion tube mounting surface, the The first ultrasonic detection component is arranged between the liquid stop component and the pump body component; wherein the other position is the first detection area corresponding to the first tube in-position detection component, and the method further includes:

Determine the state of the infusion tube and the installation surface of the infusion tube according to the first tube in-position signal of the first tube in-position detection assembly;

When the state between the pump door and the pump body is changed from closed to open, if it is detected that at least two positions on the installation surface of the infusion tube are in an anhydrous state and/or no infusion tube State, control the liquid stop component to release the infusion tube, including:

When the state between the pump door and the pump body is changed from closed to open, if it is determined that the first detection zone is in the state of no infusion tube, and the first detection port is in the state of anhydrous or no infusion tube In the infusion tube state, the liquid stop component is controlled to release the infusion tube.
The method according to claim 2, further comprising:

When the state between the pump door and the pump body is changed from closed to open, if it is determined that the first detection zone is the infusion tube in-position state, the liquid stop assembly is controlled to clamp the infusion tube.
The method according to claim 2, further comprising:

When the state between the pump door and the pump main body is open, if it is determined that the first detection zone is in the in-position state of the infusion tube, the liquid stop assembly is controlled to clamp the infusion tube.
The method according to claim 1, wherein the infusion pump further comprises a first tube in-position detection component and a second tube in-position detection component respectively provided on both ends of the installation surface of the infusion tube; On the mounting surface of the infusion tube, the first ultrasonic detection component is arranged between the liquid stop component and the pump body component; wherein the other one of the positions includes the first detection component corresponding to the first tube in-position detection component Area and a second detection area corresponding to the second tube in-position detection assembly, the method further includes:

Determine the state of the infusion tube and the installation surface of the infusion tube according to the first tube in-position signal of the first tube in-position detection assembly;

Determining the state of the infusion tube and the installation surface of the infusion tube according to the second tube in-position signal of the second tube in-position detection assembly;

When the state between the pump door and the pump body is changed from closed to open, if it is detected that at least two positions on the installation surface of the infusion tube are in an anhydrous state and/or no infusion tube State, control the liquid stop component to release the infusion tube, including:

When the state between the pump door and the pump body changes from closed to open, if it is determined that the first detection zone and the second detection zone are in a state without an infusion tube, and the first detection port is If the infusion tube is in an anhydrous state or without an infusion tube state, the liquid stop component is controlled to release the infusion tube.
The method according to claim 5, further comprising:

When the state between the pump door and the pump body is changed from closed to open, if it is determined that the first detection zone and the second detection zone are both in the infusion tube in-position state, the liquid stop is controlled The assembly clamps the infusion tube.
The method according to claim 5, further comprising:

When the state between the pump door and the pump body is open, if it is determined that the first detection zone and the second detection zone are both in the infusion tube in-position state, the liquid stop assembly is controlled to be clamped The infusion tube.
The method according to claim 1, wherein the infusion pump further comprises a second ultrasonic detection component, and a second detection port is provided at a position corresponding to the second ultrasonic detection component on the mounting surface of the infusion tube On the mounting surface of the infusion tube, the first ultrasonic detection assembly and the second ultrasonic detection assembly are arranged on one side of the pump body assembly or are respectively arranged on both sides of the pump body assembly; one of the other positions Is the second detection port; the method further includes:

Determine the state of the second detection port according to the second ultrasonic signal of the second ultrasonic detection component;

When the state between the pump door and the pump body is changed from closed to open, if it is detected that at least two positions on the installation surface of the infusion tube are in an anhydrous state and/or no infusion tube State, control the liquid stop component to release the infusion tube, including:

When the state between the pump door and the pump body is changed from closed to open, if it is determined that the first detection port and the second detection port are both in an anhydrous state or a state without an infusion tube, control the station The liquid stop component releases the infusion tube.
The method according to claim 8, further comprising:

When the state between the pump door and the pump body is changed from closed to open, if it is determined that at least one of the first detection zone or the second detection zone is in the state of water in the infusion tube, the control station is controlled. The liquid stop component clamps the infusion tube.
The method according to claim 8, further comprising:

When the state between the pump door and the pump body is open, if it is determined that the first detection zone and the second detection zone are both in the state of water in the infusion tube, the liquid stop assembly is controlled to be clamped The infusion tube.
The method according to claim 8, wherein the second ultrasonic detection component comprises a second transmitting end and a second receiving end, and the second transmitting end and the second receiving end are respectively arranged on the first The two detection ports are on two opposite sides.
The method according to any one of claims 1-11, wherein the first ultrasonic detection component comprises a first transmitting end and a first receiving end, and the first transmitting end and the first receiving end are respectively Are arranged on two opposite sides of the first detection port.
The method according to any one of claims 1-11, wherein the infusion pump further comprises a lock rod assembly, the movement of the lock rod assembly is controlled by the processor; the pump door is provided with a column The method further includes: when the state between the pump door and the pump body is turned from open to closed, moving the lock lever assembly to the door lock position and fixing the plunger in the lock Door position.
The method according to claim 13, wherein the infusion pump further comprises a pressure detection component, and on the infusion installation surface, the pressure detection component is disposed between the pump body component and the liquid stop component Between; said moving the lock rod assembly to be located at the door lock position and after the plunger is fixed in the door lock position, further includes:

To determine the pressure state of the infusion tube according to the pressure signal of the pressure detection component;

If it is determined that the pressure state of the infusion tube is normal, the clamping assembly is controlled to release the infusion tube.
The method according to claim 13, wherein the infusion pump further comprises an alarm prompt module and a pressure detection component, and the pressure detection component is arranged on the pump body component and the pressure detection component on the infusion installation surface. Between the liquid stop components; after the moving the lock rod assembly is located at the door lock position and the plunger is fixed at the door lock position, further includes:

To determine the pressure state of the infusion tube according to the pressure signal of the pressure detection component;

If it is determined that the pressure state of the infusion tube is abnormal, the alarm prompt module is controlled to emit a sound or visual prompt signal, and the clamping assembly is controlled to clamp the infusion tube.
An infusion pump, characterized by comprising a pump main body and a pump door, the pump door being installed on the pump main body in a closable and openable manner;

The pump body has a pump body housing, a processor, a pump body component, a liquid stop component, a first ultrasonic detection component, and a pump door state detection component;

The pump body housing has an infusion tube mounting surface, and the infusion tube mounting surface is used to install the infusion tube; the liquid stop assembly, the pump body assembly, and the first ultrasonic detection assembly are all arranged in the pump body housing, and at least A partial liquid stop component, at least a partial pump body component, and at least a partial first ultrasonic detection component are exposed on the installation surface of the infusion tube;

The liquid stop component is used to clamp and release the infusion tube;

A first detection port is provided at a position corresponding to the first ultrasonic detection component on the mounting surface of the infusion tube, and the first ultrasonic detection component is used to detect the liquid condition in the first detection port;

The pump body assembly is used to squeeze the infusion tube to drive the liquid in the infusion tube to move;

The pump door state detection component is used to detect the state between the pump door and the pump body;

The pump body component, the liquid stop component, the first ultrasonic detection component, and the pump door state detection component are all connected to the processor and controlled by the processor;

The processor is used for when the state between the pump door and the pump body is changed from closed to open, if it is determined that at least two positions on the installation surface of the infusion tube are in an anhydrous state and/or an infusion tube In the infusion tube state, the liquid stop component is controlled to release the infusion tube, and one of the positions is the first detection port.
The infusion pump according to claim 16, further comprising a first tube in-situ detection component arranged on one end of the infusion tube installation surface; on the infusion tube installation surface, the first ultrasonic The detection component is arranged between the liquid stop component and the pump body component; the other one of the positions is the first detection zone corresponding to the first tube in-position detection component, and the processor is used to determine the The first tube in-position signal of the in-position detection assembly determines the state of the infusion tube and the installation surface of the infusion tube. When the state between the pump door and the pump body changes from closed to open, if it is determined If the first detection area is in a state without an infusion tube, and the first detection port is in an anhydrous state or a state without an infusion tube, the liquid stop component is controlled to release the infusion tube.
The infusion pump according to claim 17, wherein the processor is further configured to: when the state between the pump door and the pump body is changed from closed to open, if the first detection zone is determined When the infusion tube is in position, the liquid stop component is controlled to clamp the infusion tube.
The infusion pump according to claim 17, wherein the processor is further configured to determine that the first detection area is an infusion tube when the state between the pump door and the pump body is open In the in-position state, the liquid stop assembly is controlled to clamp the infusion tube.
The infusion pump according to claim 16, further comprising a first tube in-position detection component and a second tube in-position detection component respectively provided on both ends of the infusion tube mounting surface; On the tube mounting surface, the first ultrasonic detection component is arranged between the liquid stop component and the pump body component; wherein the other one of the positions includes the first detection zone and the first detection zone corresponding to the first tube in-position detection component The second detection zone corresponding to the second tube in-position detection assembly, the processor is used to determine the state of the infusion tube and the installation surface of the infusion tube according to the first tube in-position signal of the first tube in-position detection assembly , According to the second tube in-position signal of the second tube in-position detection assembly, determine the state of the infusion tube and the installation surface of the infusion tube, and the state between the pump door and the pump body is closed When turned to open, if it is determined that the first detection zone and the second detection zone are in the state of no infusion tube, and the first detection port is in the state of anhydrous or no infusion tube, the stop is controlled. The liquid assembly releases the infusion tube.
The infusion pump according to claim 20, wherein the processor is further configured to: when the state between the pump door and the pump body is changed from closed to open, if the first detection zone is determined If both the infusion tube and the second detection zone are in the in-position state, the liquid stop component is controlled to clamp the infusion tube.
The infusion pump according to claim 20, wherein the processor is configured to determine whether the first detection zone and the second detection zone are in an open state between the pump door and the pump body. If the detection area is in a state where the infusion tube is in place, the liquid stop component is controlled to clamp the infusion tube.
The infusion pump according to claim 16, wherein the infusion pump further comprises a second ultrasonic detection component, and a second detection component is provided at a position corresponding to the second ultrasonic detection component on the mounting surface of the infusion tube.口; On the mounting surface of the infusion tube, the first ultrasonic detection assembly and the second ultrasonic detection assembly are arranged on one side of the pump body assembly or are respectively arranged on both sides of the pump body assembly; the other The position is the second detection port; the processor is used to determine the state of the second detection port according to the second ultrasonic signal of the second ultrasonic detection assembly, which is between the pump door and the pump body When the state of is changed from closed to open, if it is determined that the first detection port and the second detection port are both in an anhydrous state or no infusion tube state, the liquid stop component is controlled to release the infusion tube.
The infusion pump according to claim 23, wherein the processor is further configured to: when the state between the pump door and the pump body changes from closed to open, if the first detection zone is determined Or at least one of the second detection areas is in a state where the infusion tube has water, then the liquid stop component is controlled to clamp the infusion tube.
The infusion pump according to claim 23, wherein the processor is further configured to determine that the first detection zone and the pump body are in an open state when the pump door is open. If the second detection zone is in a state where the infusion tube has water, the liquid stop assembly is controlled to clamp the infusion tube.
The infusion pump according to claim 23, wherein the second ultrasonic detection assembly comprises a second transmitting end and a second receiving end, and the second transmitting end and the second receiving end are respectively arranged at the The second detection port is on two opposite sides.
The infusion pump according to any one of claims 16-26, wherein the first ultrasonic detection assembly comprises a first transmitting end and a first receiving end, the first transmitting end and the first receiving end They are respectively arranged on two opposite sides of the first detection port.
The infusion pump according to claim 27, wherein the first detection port is a C-shaped notch, the opening of the C-shaped notch faces the pump door, and the pump door is closed with the pump body时, block the opening.