Peristaltic pump and medical liquid injection device

Abstract

The utility model discloses a peristaltic pump and a medical liquid injection device, and relates to the technical field of medical instruments, and the peristaltic pump comprises a pump seat; the wriggling mechanism is arranged on the pump base, an external hose can penetrate through the wriggling mechanism, and the wriggling mechanism is used for extruding and releasing the hose to enable liquid in the hose to flow; the pump cover is movably connected with the pump base and is provided with a closing position for covering the peristaltic mechanism and an opening position for exposing the peristaltic mechanism; and the detection control device is electrically connected with the peristaltic mechanism, and the detection control device is used for detecting the position of the pump cover and controlling the peristaltic mechanism to be switched to a corresponding working state. According to the technical scheme provided by the utility model, the problem that the peristaltic mechanism is still in a working state after the pump cover is opened can be solved, and the safety of the peristaltic pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a peristaltic pump and a medical liquid injection device. Background Art

[0002] In order to meet the liquid delivery needs in various medical operations, many medical devices choose to use peristaltic pumps to deliver the required liquids because peristaltic pumps have a simple structure, low noise, no pollution, and easy to control flow and direction.

[0003] Existing peristaltic pumps typically consist of a pump base, pump cover, rollers, and a hose. The pump base houses multiple movable rollers that sequentially squeeze the hose, moving the liquid within it and delivering the liquid. The pump cover covers the rollers, preventing any injuries such as pinching fingers or entrapment of hair. It also prevents debris like dust and moisture from entering the pump base, ensuring proper operation and extending the roller's lifespan.

[0004] However, when the user opens the pump cover, the roller of the existing peristaltic pump is still in working state, which may easily cause harm to the user. Utility Model Content

[0005] The main purpose of the utility model is to provide a peristaltic pump and a medical liquid injection device, aiming to solve the problem that the peristaltic mechanism is still in a working state after the pump cover is opened, thereby improving the safety of the peristaltic pump.

[0006] To achieve the above-mentioned purpose, the peristaltic pump proposed in the present invention comprises:

[0007] Pump seat;

[0008] a peristaltic mechanism, disposed on the pump base and capable of allowing an external hose to pass through, the peristaltic mechanism being used to squeeze and release the hose to allow the liquid in the hose to flow;

[0009] a pump cover movably connected to the pump base, having a closed position for covering the peristaltic mechanism and an open position for exposing the peristaltic mechanism; and

[0010] A detection control device is electrically connected to the peristaltic mechanism, and is used to detect the position of the pump cover and control the peristaltic mechanism to switch to a corresponding working state.

[0011] In one embodiment, the detection control device includes:

[0012] a detection assembly, provided on at least one of the pump base and the pump cover, the detection assembly being used to detect the position of the pump cover; and

[0013] A control component is electrically connected to the detection component and the peristaltic mechanism respectively. The control component is used to obtain the position of the pump cover detected by the detection component and control the peristaltic mechanism to switch to a corresponding working state.

[0014] In one embodiment, the detection assembly includes a detection member and a trigger member, the detection member is electrically connected to the control assembly, the detection member is provided at one of the pump base and the pump cover, and the trigger member is provided at the other of the pump base and the pump cover;

[0015] Wherein, when the pump cover changes between the closed position and the open position, the triggering member triggers the detecting member.

[0016] In one embodiment, the detection element is a magnetic switch, and the trigger element is a magnet; or

[0017] The detection component is an optical fiber sensor, and the trigger component is a light source.

[0018] In one embodiment, the detection component includes a distance measuring sensor, which is electrically connected to the control component. The distance measuring sensor is used to detect the relative distance between the pump seat and the pump cover to determine the position of the pump cover. The distance measuring sensor is provided at least one of the pump seat and the pump cover.

[0019] In one embodiment, the ranging sensor is an ultrasonic ranging sensor, a radar ranging sensor, or an infrared ranging sensor.

[0020] In one embodiment, the detection component is further configured to convert the detected position of the pump cover into a position signal and send the signal to the control component.

[0021] The control component includes:

[0022] an operational amplifier, electrically connected to the detection component, and configured to receive and amplify the position signal to obtain an amplified voltage;

[0023] a comparator electrically connected to the operational amplifier, the comparator being configured to compare the amplified voltage with a preset voltage to obtain a comparison result; and

[0024] A controller is electrically connected to the comparator and the peristaltic mechanism respectively, and is used to receive the comparison result and control the peristaltic mechanism to keep working or stop working accordingly.

[0025] In one embodiment, the pump cover has a first end and a second end opposite to each other, the first end being rotatably connected to the pump base so that the second end of the pump cover has a closed position covering the peristaltic mechanism and an open position exposing the peristaltic mechanism.

[0026] In one embodiment, the detection assembly is disposed on the pump base and close to the first end of the pump cover.

[0027] The utility model also provides a medical liquid injection device, comprising a hose and the above-mentioned peristaltic pump.

[0028] The peristaltic pump in the technical solution of the present invention includes a pump seat, a peristaltic mechanism, a pump cover, and a detection and control device. An external hose is inserted into the peristaltic mechanism. The liquid in the hose moves by squeezing and releasing the peristaltic mechanism, thereby completing the liquid delivery. The pump cover is movably connected to the pump seat, so that the pump cover has a closed position and an open position. When the pump cover is in the closed position, it covers the peristaltic mechanism, which helps to reduce noise and prevent the peristaltic mechanism from causing harm to the user, thereby improving safety. When the pump cover is in the open position, it improves the convenience of operations such as replacing the hose and repairing the peristaltic mechanism. The detection and control device is electrically connected to the peristaltic mechanism and is used to detect the position of the pump cover and control the working state of the peristaltic mechanism according to the position of the pump cover. Specifically, when the detection and control device detects that the pump cover has left the closed position, it controls the peristaltic mechanism to stop, preventing the exposed peristaltic mechanism from causing harm to the user, improving the safety of the peristaltic pump, and preventing the peristaltic mechanism from being entangled in debris during movement, thereby avoiding accidental damage to the peristaltic mechanism and extending the service life of the peristaltic pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of the structure of an embodiment of the medical injection device provided by the present utility model Figure 1 ;

[0031] Figure 2 A schematic diagram of the structure of a peristaltic pump according to the present invention Figure 1 ;

[0032] Figure 3 A schematic diagram of the structure of a peristaltic pump according to the present invention Figure 2 ;

[0033] Figure 4 A partial structural diagram of an embodiment of a peristaltic pump provided by the utility model;

[0034] Figure 5 A schematic diagram of the structure of an embodiment of the medical injection device provided by the present utility model Figure 2;

[0035] Figure 6 This is a structural schematic diagram of another embodiment of the medical injection device provided by the utility model;

[0036] Figure 7 This is a circuit diagram of a control component of an embodiment of a peristaltic pump provided by the present invention.

[0037] Description of Figure Numbers:

[0038] 100. Pump seat;

[0039] 200, peristaltic mechanism; 210, pressing block; 220, roller;

[0040] 300, hose;

[0041] 400, pump cover;

[0042] 500, detection control device; 510, detection component; 511, detection element; 512, trigger element; 513, distance sensor;

[0043] 600. Host.

[0044] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0047] In this utility model, unless otherwise specified or limited, the terms "connect" and "fix" should be understood in a broad sense. For example, "fix" can refer to a fixed connection, a detachable connection, or an integral connection; "connect" can refer to a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, and can refer to internal communication between two components or an interaction between two components. Unless otherwise specified, those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0048] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] The utility model provides a peristaltic pump.

[0050] See also Figures 1 to 3 , Figure 1 A schematic diagram of the structure of an embodiment of the medical injection device provided by the present utility model Figure 1 , Figure 2 A schematic diagram of the structure of a peristaltic pump according to the present invention Figure 1 , Figure 3 A schematic diagram of the structure of a peristaltic pump according to the present invention Figure 2 .

[0051] In one embodiment of the present invention, the peristaltic pump comprises:

[0052] Pump seat 100;

[0053] The peristaltic mechanism 200 is provided on the pump base 100 and can be passed through by the external hose 300. The peristaltic mechanism 200 is used to squeeze and release the hose 300 to allow the liquid in the hose 300 to flow;

[0054] A pump cover 400 movably connected to the pump base 100 , having a closed position for covering the peristaltic mechanism 200 and an open position for exposing the peristaltic mechanism 200 ; and

[0055] The detection and control device 500 is electrically connected to the peristaltic mechanism 200 . The detection and control device 500 is used to detect the position of the pump cover 400 and control the peristaltic mechanism 200 to switch to a corresponding working state.

[0056] The peristaltic pump of the present invention includes a pump base 100, a peristaltic mechanism 200, a pump cover 400, and a detection and control device 500. An external hose 300 is inserted through the peristaltic mechanism 200. The squeeze and release of the peristaltic mechanism 200 causes the liquid within the hose 300 to move, thereby completing liquid delivery. The pump cover 400 is movably connected to the pump base 100, allowing the pump cover 400 to have a closed position and an open position. In the closed position, the pump cover 400 covers the peristaltic mechanism 200, which helps reduce noise and prevents the peristaltic mechanism 200 from causing harm to the user, thereby improving safety. In the open position, the pump cover 400 facilitates operations such as replacing the hose 300 and repairing the peristaltic mechanism 200. The detection and control device 500 is electrically connected to the peristaltic mechanism 200, and is used to detect the position of the pump cover 400 and control the working state of the peristaltic mechanism 200 according to the position of the pump cover 400. Specifically, when the detection and control device 500 detects that the pump cover 400 leaves the closed position, it controls the peristaltic mechanism 200 to stop, preventing the exposed peristaltic mechanism 200 from causing harm to the user, thereby improving the safety of the peristaltic pump, and avoiding the peristaltic mechanism 200 in motion from being entangled in debris, thereby avoiding accidental damage to the peristaltic mechanism 200 and extending the service life of the peristaltic pump.

[0057] Among them, reference Figure 4 The peristaltic mechanism 200 includes a pressing block 210 and a plurality of rollers 220. The plurality of rollers 220 are arranged on the same side of the pressing block 210 and are spaced apart from the pressing block 210. A mounting groove is formed between the pressing block 210 and the rollers 220. The hose 300 is installed in the mounting groove. The plurality of rollers 220 squeeze the hose 300 in turn to move the liquid inside the hose 300.

[0058] In one embodiment, the detection control device 500 includes:

[0059] a detection assembly 510 , provided on at least one of the pump base 100 and the pump cover 400 , the detection assembly 510 being used to detect the position of the pump cover 400 ; and

[0060] The control component is electrically connected to the detection component 510 and the peristaltic mechanism 200 respectively. The control component is used to obtain the position of the pump cover 400 detected by the detection component 510 and control the peristaltic mechanism 200 to switch to a corresponding working state.

[0061] Reference Figure 5In an embodiment of the present invention, the detection and control device 500 includes a detection component 510 and a control component. The detection component 510 is used to detect the position of the pump cover 400, and the control component is used to receive and process the signal from the detection component 510, and control the working state of the peristaltic mechanism 200 according to the processing result. The position detection function and the control function are divided into two components for implementation. If any one of the detection component 510 and the control component is damaged, it can be repaired separately, thereby reducing the use cost of the peristaltic pump. In addition, the detection and control device 500 has a simple structure, is easy to implement, has a low manufacturing cost, and is easy to integrate into an existing peristaltic pump without the need for large-scale modification of the existing peristaltic pump. Among them, the detection component 510 can be set on the pump base 100 or on the pump cover 400, and the detection function can be realized in various forms such as proximity sensors, photoelectric sensors, and micro switches. The control component can be an electronic control unit such as a single-chip microcomputer and a PLC.

[0062] In one embodiment, the detection assembly 510 includes a detection member 511 and a trigger member 512. The detection member 511 is electrically connected to the control assembly. The detection member 511 is disposed on one of the pump base 100 and the pump cover 400, and the trigger member 512 is disposed on the other of the pump base 100 and the pump cover 400.

[0063] When the pump cover 400 changes between the closed position and the open position, the triggering member 512 triggers the detecting member 511 .

[0064] Reference Figure 5In an embodiment of the present invention, the detection component 510 includes a detection member 511 and a trigger member 512. The trigger member 512 cooperates with the detection member 511. When the pump cover 400 is in a specific position, the trigger member 512 can act on the detection member 511 to make the detection member 511 generate a signal. Among them, it can be configured that when the pump cover 400 is in the closed position, the trigger 512 triggers the detection member 511, so that the detection member 511 sends a signal to the control component, indicating that the pump cover 400 is in the closed position, so that the peristaltic mechanism 200 can operate normally. Once the pump cover 400 leaves the closed position, the trigger 512 no longer triggers the detection member 511, and the detection member 511 sends another signal to the control component, indicating that the pump cover 400 leaves the closed position, so that the peristaltic mechanism 200 stops; it can also be configured that when the pump cover 400 leaves the closed position, the trigger 512 triggers the detection member 511, so that the detection member 511 sends a signal to the control component, indicating that the pump cover 400 leaves the closed position, so that the peristaltic mechanism 200 stops, until the pump cover 400 returns to the closed position, the trigger 512 no longer triggers the detection member 511, and the detection member 511 sends another signal to the control component, so that the peristaltic mechanism 200 can operate normally. The position change of the pump cover 400 is detected by the cooperation of the detection member 511 and the trigger member 512. The entire detection assembly 510 has a simple structure, is easy to implement, and has high reliability, thereby reducing the possibility of failure.

[0065] In one embodiment, the detection member 511 is a magnetic switch, and the trigger member 512 is a magnet; or,

[0066] The detection component 511 is a fiber optic sensor, and the trigger component 512 is a light source.

[0067] In the embodiment of the present invention, the detection member 511 is a magnetic switch, and the trigger member 512 is a magnet. A magnetic switch is a switch that relies on changes in a magnetic field to connect or disconnect a circuit. When a magnet approaches, the reed within the magnetic switch becomes magnetized, causing the switch to connect or disconnect, thereby generating an electrical signal. Specifically, one of the magnetic switch and the magnet is located on the pump cover 400, and the other is located on the pump base 100. When the pump cover 400 moves relative to the pump base 100, the positional relationship between the magnet and the magnetic switch changes, causing the magnetic switch to connect or disconnect. For example, when the pump cover 400 is in the closed position, the magnet approaches the magnetic switch, magnetizing the magnetic switch and generating a signal. Upon receiving the signal from the magnetic switch, the control component confirms that the pump cover 400 is closed and allows the peristaltic mechanism 200 to begin or continue operation. When the pump cover 400 leaves the closed position, the magnet moves away from the magnetic switch, which is no longer magnetized and the signal disappears or changes. The control component detects the change in signal, determines that the pump cover 400 is open, and then controls the peristaltic mechanism 200 to stop operating, thereby ensuring the safety of the peristaltic pump. The magnet triggers the magnetic switch without contact, reducing mechanical wear, improving system reliability, and extending the service life of the detection component 510. Furthermore, because the magnet triggers the magnetic switch through a magnetic field, a fully enclosed protective cover can be provided around the magnetic switch to improve dust and water resistance, ensuring that the detection component 510 has a long service life even in relatively harsh medical environments.

[0068] In an embodiment of the present invention, detection element 511 is a fiber optic sensor, and trigger element 512 is a light source. When light emitted by the light source is received by the fiber optic sensor, the sensor can detect a signal based on changes in light parameters such as intensity, phase, and polarization state. Specifically, one of the fiber optic sensor and the light source is mounted on the pump cover 400, and the other is mounted on the pump base 100. When the pump cover 400 moves relative to the pump base 100, the light emitted by the light source may be blocked or exposed by the pump cover 400, thereby causing the signal from the fiber optic sensor to change. For example, when the pump cover 400 is in the closed position, the light emitted by the light source is blocked by the pump cover 400 and cannot be received by the fiber optic sensor. The fiber optic sensor cannot detect the light signal and generates an electrical signal. After receiving the signal from the fiber optic sensor, the control component confirms that the pump cover 400 is closed and allows the peristaltic mechanism 200 to start or continue operation. When the pump cover 400 leaves the closed position, the light emitted by the light source is received by the fiber optic sensor, which generates another electrical signal. The control component detects the change in signal and determines that the pump cover 400 is open. It then controls the peristaltic mechanism 200 to stop operating, thereby ensuring the safety of the peristaltic pump. The light emitted by the light source triggers the fiber optic sensor without contact, reducing mechanical wear, improving system reliability, and extending the service life of the detection component 510. In addition, the light propagates quickly, and the fiber optic sensor responds quickly when triggered, allowing the peristaltic mechanism 200 to stop operating quickly when the pump cover 400 is opened, further improving safety.

[0069] In one embodiment, the detection component 510 includes a distance measuring sensor 513, which is electrically connected to the control component. The distance measuring sensor 513 is used to detect the relative distance between the pump base 100 and the pump cover 400 to determine the position of the pump cover 400. The distance measuring sensor 513 is provided in at least one of the pump base 100 and the pump cover 400.

[0070] Reference Figure 6 In an embodiment of the present utility model, the detection component 510 detects the relative distance between the pump base 100 and the pump cover 400 through the distance sensor 513 to determine the position of the pump cover 400. The distance sensor 513 can adopt various forms such as ultrasonic waves, lasers, infrared rays, etc. Specifically, the distance sensor 513 measures the distance information between the pump base 100 and the pump cover 400. The distance sensor 513 sends this distance information to the control component. The control component compares this distance information to see if it is within the preset distance information range. The control component confirms whether the pump cover 400 is closed based on the comparison result, thereby controlling the peristaltic mechanism 200 to stop or work. The distance sensor 513 technology is mature, easy to obtain, and easy to integrate into existing peristaltic pumps without the need for large-scale modification of existing peristaltic pumps.

[0071] In one embodiment, the distance measuring sensor 513 is an ultrasonic distance measuring sensor, a radar distance measuring sensor, or an infrared distance measuring sensor.

[0072] In an embodiment of the present invention, the distance measuring sensor 513 is an ultrasonic distance measuring sensor that measures distance by emitting and receiving ultrasonic waves. This sensor has a simple structure, low cost, and can measure distance without physical contact, thus reducing the risk of mechanical wear and contamination. Alternatively, the distance measuring sensor 513 can be a radar distance measuring sensor that uses radio waves to measure distance, offering high measurement accuracy and requiring no physical contact, thus reducing the risk of mechanical wear and contamination. Alternatively, the distance measuring sensor 513 can be an infrared distance measuring sensor that uses infrared light to measure distance, offering fast response speed, high resolution, and being less susceptible to electromagnetic interference in the environment. This sensor can measure distance without physical contact, thus reducing the risk of mechanical wear and contamination.

[0073] In one embodiment, the detection component 510 is further configured to convert the detected position of the pump cover 400 into a position signal and send the signal to the control component.

[0074] The control components include:

[0075] an operational amplifier, electrically connected to the detection component 510 , and configured to receive and amplify the position signal to obtain an amplified voltage;

[0076] a comparator electrically connected to the operational amplifier, the comparator being configured to compare the amplified voltage with a preset voltage to obtain a comparison result; and

[0077] The controller is electrically connected to the comparator and the peristaltic mechanism 200 respectively. The controller is used to receive the comparison result and control the peristaltic mechanism 200 to keep working or stop working accordingly.

[0078] In an embodiment of the present invention, the detection component 510 converts the detected position of the pump cover 400 into a position signal and sends it to the control component. The control component includes an operational amplifier, a comparator and a controller. The operational amplifier is connected to the detection component 510, receives the signal from the detection component 510, and amplifies the input weak signal into a larger voltage signal (amplified voltage) for comparison by the comparator. The comparator compares the amplified voltage output by the operational amplifier with the preset voltage and outputs a high or low level signal to indicate whether the amplified voltage is higher or lower than the preset voltage. The controller receives the comparison result and is connected to the peristaltic mechanism 200 at the same time to send a control signal to decide whether to stop the peristaltic mechanism 200. For example: if the amplified voltage is lower than the preset voltage, it indicates that the pump cover 400 is open, and the controller will stop the peristaltic mechanism 200; if the amplified voltage is higher than or equal to the preset voltage, it indicates that the pump cover 400 is closed, and the controller allows the peristaltic mechanism 200 to keep working. The specific circuit is as follows: Figure 7As shown, the sensor signal is input into the operational amplifier via the INPUT pin, undergoes negative feedback to form a follower circuit, and is then input into the comparator circuit for comparison with the voltage formed by the voltage divider formed by resistor R9. The result is input into the controller (i.e., MCU, Microcontroller Unit, in the figure), which then controls the peristaltic mechanism 200 according to the structure. Resistor R1 is connected in series between the operational amplifier and the comparator. The comparator is connected in parallel with resistor R2 and then in series with resistor R3. The values of resistors R1, R2, and R3 are specifically designed according to actual conditions. Resistor R9 is an adjustable resistor used to eliminate signal errors in the detection component 510.

[0079] By using an operational amplifier and a comparator, the electrical stability of the system is improved, which not only avoids the problem of the peristaltic mechanism 200 not stopping in time when the pump cover 400 is opened, but also reduces the possibility of the peristaltic pump stopping by mistake.

[0080] In one embodiment, the pump cover 400 has a first end and a second end relative to each other, and the first end is rotatably connected to the pump base 100 so that the second end of the pump cover 400 has a closed position covering the peristaltic mechanism 200 and an open position exposing the peristaltic mechanism 200.

[0081] In an embodiment of the present invention, the pump cover 400 is opened or closed by rotation, which has a simple structure, is easy to implement, and is convenient to operate. Even in the open position, the pump cover 400 is connected to the pump base 100 to prevent the pump cover 400 from being lost.

[0082] In one embodiment, the detection assembly 510 is disposed on the pump base 100 and close to the first end of the pump cover 400 .

[0083] Reference Figure 5 and Figure 6 In an embodiment of the present invention, the first end of the pump cover 400 is rotatably connected to the pump base 100. The user generally opens and closes the pump cover 400 by operating the second end of the pump cover 400. The detection component 510 is arranged close to the first end of the pump cover 400 and away from the user's hand, which reduces the possibility of accidental touch by the user, ensures detection accuracy, and extends service life.

[0084] The present invention also proposes a medical injection device, comprising a hose 300 and the above-mentioned peristaltic pump. The specific structure of the peristaltic pump refers to the above-mentioned embodiment. Since the present medical injection device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described one by one here. Among them, the medical injection device can be used to deliver liquid medicine, nutrient solution, blood, saline, water, etc. to patients. For example, it can be used on dialysis equipment to deliver blood and dialysate; it can be used on orthopedic surgical equipment to deliver saline for cleaning the surgical site, cooling water for cooling tools, etc.

[0085] Specifically in this embodiment, refer to Figure 5 and Figure 6 The medical injection device can be connected to a medical host 600 such as a surgical power device, a plasma surgical device, etc. Specifically, the peristaltic pump is installed on the host 600, which facilitates the overall movement of the medical injection device and improves the convenience of use.

[0086] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A peristaltic pump, characterized in that: include: Pump seat; a peristaltic mechanism, disposed on the pump base and capable of allowing an external hose to pass through, the peristaltic mechanism being used to squeeze and release the hose to allow the liquid in the hose to flow; a pump cover movably connected to the pump base, having a closed position for covering the peristaltic mechanism and an open position for exposing the peristaltic mechanism; as well as A detection control device is electrically connected to the peristaltic mechanism, and is used to detect the position of the pump cover and control the peristaltic mechanism to switch to a corresponding working state.

2. The peristaltic pump according to claim 1, wherein The detection control device comprises: a detection assembly, provided on at least one of the pump base and the pump cover, the detection assembly being used to detect the position of the pump cover; and A control component is electrically connected to the detection component and the peristaltic mechanism respectively. The control component is used to obtain the position of the pump cover detected by the detection component and control the peristaltic mechanism to switch to a corresponding working state.

3. The peristaltic pump according to claim 2, wherein The detection assembly includes a detection member and a trigger member, the detection member is electrically connected to the control assembly, the detection member is provided at one of the pump base and the pump cover, and the trigger member is provided at the other of the pump base and the pump cover; Wherein, when the pump cover changes between the closed position and the open position, the triggering member triggers the detecting member.

4. The peristaltic pump according to claim 3, wherein The detection element is a magnetic switch, and the trigger element is a magnet; or The detection component is an optical fiber sensor, and the trigger component is a light source.

5. The peristaltic pump according to claim 2, wherein The detection component includes a distance measuring sensor, which is electrically connected to the control component. The distance measuring sensor is used to detect the relative distance between the pump seat and the pump cover to determine the position of the pump cover. The distance measuring sensor is provided in at least one of the pump seat and the pump cover.

6. The peristaltic pump according to claim 5, wherein The distance measuring sensor is one of an ultrasonic distance measuring sensor, a radar distance measuring sensor, and an infrared distance measuring sensor.

7. The peristaltic pump according to claim 2, wherein The detection component is also used to convert the detected position of the pump cover into a position signal and send it to the control component. The control component includes: an operational amplifier, electrically connected to the detection component, and configured to receive and amplify the position signal to obtain an amplified voltage; a comparator electrically connected to the operational amplifier, the comparator being configured to compare the amplified voltage with a preset voltage to obtain a comparison result; and A controller is electrically connected to the comparator and the peristaltic mechanism respectively, and is used to receive the comparison result and control the peristaltic mechanism to keep working or stop working accordingly.

8. The peristaltic pump according to claim 2, wherein The pump cover has a first end and a second end opposite to each other, the first end is rotatably connected to the pump base, so that the second end of the pump cover has a closed position covering the peristaltic mechanism and an open position exposing the peristaltic mechanism.

9. The peristaltic pump according to claim 8, wherein The detection component is arranged on the pump seat and close to the first end of the pump cover.

10. A medical injection device, characterized in that: The peristaltic pump comprises a hose and the peristaltic pump according to any one of claims 1 to 9.

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