Medical aspirator

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a medical aspirator. The medical aspirator can be connected with negative pressure equipment and comprises a liquid collection bottle, a buffer bottle, an electromagnetic valve and a control mechanism, the buffer bottle is arranged between the liquid collection bottle and the negative pressure equipment; the electromagnetic valve is arranged in the buffer bottle cap; the control mechanism is used for controlling the electromagnetic valve to be started or closed and comprises a controller, a control button and a liquid level sensing assembly. In the using process, a medical worker firstly connects the medical aspirator with negative pressure equipment, then the electromagnetic valve is powered on through the control mechanism, at the moment, the liquid collecting bottle begins to collect liquid, when the liquid in the liquid collecting bottle enters the buffering bottle, the liquid level sensing assembly senses that the liquid exists in the buffering bottle body, the control mechanism controls the electromagnetic valve to be powered off, and then the liquid collecting bottle starts to collect the liquid. The buffer bottle and the negative pressure equipment can be timely blocked, the situation that liquid in the liquid collecting bottle flows back to the negative pressure equipment due to the fact that the buffer bottle is small in size and short in buffer time is avoided, and the workload of medical staff is relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a medical aspirator. Background Art

[0002] The negative pressure suction device uses negative pressure to suck out the dirty blood or sputum in the patient's body, and collects the sucked liquid through the liquid collection bottle on the negative pressure suction device. The liquid collection bottle in the suction device in the prior art is the same size as the buffer bottle. Since the liquid collection bottle needs to hold a large amount of liquid, the liquid collection bottle needs to be made larger, which is inconvenient to carry; however, if the buffer bottle is made smaller, the buffering time is shortened, and the medical staff fails to respond in time, which easily causes the liquid in the liquid collection bottle to flow back into the negative pressure device, causing damage to the negative pressure device. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a medical aspirator which can prevent liquid from flowing back.

[0004] The utility model adopts the following technical solutions:

[0005] A medical suction device, which can be connected to a negative pressure device, comprises a liquid collection bottle, a buffer bottle, a solenoid valve and a control mechanism;

[0006] A liquid collecting bottle, used to collect liquid;

[0007] A buffer bottle is arranged between the liquid collecting bottle and the negative pressure device, comprising a buffer bottle body, a buffer bottle cap arranged at the opening of the buffer bottle body and detachably connected to the buffer bottle body through a thread, and a gas delivery port arranged at one side of the buffer bottle body and connected to the liquid collecting bottle, wherein the buffer bottle cap comprises an air flow channel formed inside the buffer bottle cap, an air inlet arranged at the bottom of the buffer bottle cap and connecting the air flow channel with the inside of the buffer bottle body, and a negative pressure connector arranged at the side of the buffer bottle cap and connecting the air flow channel with the negative pressure device;

[0008] A solenoid valve, which is set in the buffer bottle cap, can open or close the air inlet;

[0009] The control mechanism is used to control the start or close of the solenoid valve, including a controller arranged on the buffer bottle cover and connected to the solenoid valve, a control button arranged on the side of the buffer bottle cover and connected to the controller to control the solenoid valve, and a liquid level sensing component arranged in the buffer bottle body and connected to the controller to monitor the internal situation of the buffer bottle body.

[0010] Furthermore, the solenoid valve includes a solenoid valve body and a battery assembly for power supply.

[0011] Furthermore, the battery assembly includes a wind-driven motor disposed in the airflow channel and a rechargeable battery disposed on the wind-driven motor for supplying power to the electromagnetic valve body.

[0012] Furthermore, the liquid level sensing assembly includes a liquid level sensing rod disposed at the bottom of the buffer bottle cover and extending downward to the inside of the buffer bottle body, and the liquid level sensing rod is connected to the controller.

[0013] Furthermore, the buffer bottle cap also includes a gas pressure gauge arranged on the buffer bottle cap and used for measuring the internal pressure of the air flow channel.

[0014] Furthermore, the liquid collecting bottle includes a liquid collecting bottle body and a liquid collecting bottle cover detachably connected to the liquid collecting bottle body, and the liquid collecting bottle cover includes a liquid extraction port and an air extraction port respectively arranged on the top thereof, a liquid extraction tube arranged on the liquid extraction port, and an air supply tube connected to the air extraction port at one end and the buffer bottle at the other end.

[0015] Furthermore, the control mechanism also includes a buzzer alarm arranged on the side of the buffer bottle cap and connected to the controller.

[0016] It can be seen from the above description of the utility model that, compared with the prior art, the utility model has the following beneficial effects: the application cooperates between a liquid collecting bottle, a buffer bottle arranged between the liquid collecting bottle and the negative pressure device, a solenoid valve arranged in the buffer bottle cover, and a control mechanism for controlling the start or close of the solenoid valve. During use, the medical staff first connects the buffer bottle to the liquid collecting bottle and the negative pressure device through the gas inlet and the negative pressure connector respectively, and then energizes the solenoid valve through the control button to open the air inlet, so that the inside of the buffer bottle body is connected to the air flow channel. At this time, the liquid collecting bottle begins to collect liquid. When the liquid in the liquid collecting bottle enters the buffer bottle body, the liquid level sensing component senses that there is liquid in the buffer bottle body, and the controller controls the solenoid valve to cut off the power, thereby closing the air inlet, which can timely block the buffer bottle body and the negative pressure device, and avoid the liquid in the liquid collecting bottle from flowing back to the negative pressure device due to the small volume of the buffer bottle and the short buffer time, thereby reducing the workload of medical staff.

[0017] Through the cooperation between the wind-driven motor arranged in the air flow channel and the rechargeable battery arranged on the wind-driven motor for powering the electromagnetic valve body, when the air delivery port is connected with the air inlet, the negative pressure air flow passes through the air flow channel to enable the wind-driven motor to charge the rechargeable battery, thereby providing electrical energy for the electromagnetic valve body, thereby ensuring the normal operation of the electromagnetic valve and extending the service life of the electromagnetic valve;

[0018] By setting a buzzer alarm on the buffer bottle cover and connected to the controller, when the liquid level sensing component senses that there is liquid in the buffer bottle body, the buzzer alarm sounds to remind medical staff that the liquid collection bottle needs to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a medical aspirator.

[0020] Figure 2Schematic diagram of the exploded structure of the buffer bottle.

[0021] Figure 3 This is a cross-sectional view of the buffer bottle structure.

[0022] In the figure: 1-liquid collecting bottle, 11-liquid collecting bottle body, 12-liquid collecting bottle cap, 13-liquid extraction port, 14-gas extraction port, 15-liquid extraction tube, 16-gas supply pipe, 2-buffer bottle, 21-buffer bottle body, 22-buffer bottle cap, 23-gas supply port, 24-air flow channel, 25-air inlet, 26-negative pressure connector, 27-gas pressure gauge, 3-solenoid valve, 31-solenoid valve body, 32-battery assembly, 33-wind-driven motor, 34-rechargeable battery, 4-control mechanism, 41-control button, 42-liquid level sensing assembly, 43-liquid level sensing rod, 44-buzzer alarm. DETAILED DESCRIPTION

[0023] The present invention is further described below through specific implementation methods.

[0024] like Figures 1 to 3 As shown, this embodiment provides a medical suction device that can be connected to a negative pressure device, including a liquid collection bottle 1, a buffer bottle 2, a solenoid valve 3 and a control mechanism 4.

[0025] The liquid collecting bottle 1 is used to collect liquid, and includes a liquid collecting bottle body 11 and a liquid collecting bottle cover 12 detachably connected to the liquid collecting bottle body 11; specifically, the liquid collecting bottle cover 12 includes a liquid extraction port 13 and an air extraction port 14 respectively arranged on the top thereof, a liquid extraction tube 15 arranged on the liquid extraction port 13, and an air supply tube 16 connected to the air extraction port 14 at one end and to the buffer bottle 2 at the other end, wherein the other end of the liquid extraction tube 15 can be extended into the patient's body to absorb liquid.

[0026] The buffer bottle 2 is arranged between the liquid collecting bottle 1 and the negative pressure equipment, and includes a buffer bottle body 21, a buffer bottle cap 22 arranged at the opening of the buffer bottle body 21 and detachably connected to the buffer bottle body 21 by threads, and a gas inlet 23 arranged on one side of the buffer bottle body 21 and connected to the liquid collecting bottle 1; specifically, the buffer bottle cap 22 includes an air flow channel 24 formed inside it, an air inlet 25 arranged at the bottom of the buffer bottle cap 22 connecting the air flow channel 24 with the inside of the buffer bottle body 21, and a negative pressure connector 26 arranged on the side of the buffer bottle cap 22 connecting the air flow channel 24 with the negative pressure equipment; further, the buffer bottle cap 22 also includes a gas pressure gauge 27 arranged on the buffer bottle cap 22 for measuring the internal pressure of the air flow channel 24.

[0027] The solenoid valve 3 is arranged in the buffer bottle cover 22, which can open or close the air inlet 25, and includes a solenoid valve body 31 and a battery assembly 32 for powering the solenoid valve. When the buffer bottle 2 is connected to the negative pressure device, the solenoid valve 3 is not powered on. At this time, the air inlet 25 is in a closed state, and the negative pressure airflow is only in the airflow channel 24. The solenoid valve 3 is started by the control mechanism 4 to put the solenoid valve 3 in a powered state, thereby opening the air inlet 25, and the liquid collecting bottle 1 begins to absorb the liquid in the patient's body. Specifically, the battery assembly 32 includes a wind-driven motor 33 arranged in the airflow channel 24 and a rechargeable battery 34 arranged on the wind-driven motor 33 to power the solenoid valve body 31. When the buffer bottle 3 is connected to the negative pressure device, the negative pressure airflow can drive the wind-driven motor 33 to operate and charge the rechargeable battery 34, so that the rechargeable battery 34 can provide electrical energy to the solenoid valve body 33, thereby ensuring the normal operation of the solenoid valve 3 and extending the service life of the solenoid valve 3.

[0028] The control mechanism 4 is used to control the start or close of the solenoid valve 3, including a controller arranged on the buffer bottle cover 22 and connected to the solenoid valve 3, a control button 41 arranged on the side of the buffer bottle cover 22 and connected to the controller to control the solenoid valve 3, and a liquid level sensing component 42 arranged in the buffer bottle body 21 and connected to the controller to monitor the internal situation of the buffer bottle body 21; when in use, the buffer bottle 2 is first connected to the negative pressure device, and then the solenoid valve 3 is energized through the control button 41, and the liquid collecting bottle 1 starts to collect liquid. When the liquid in the liquid collecting bottle 1 enters the buffer bottle body 21, the liquid level sensing component 42 senses that there is liquid in the buffer bottle body 41, and the controller controls the solenoid valve 3 to be powered off, which can be blocked in time. The buffer bottle body 21 and the negative pressure device prevent the liquid in the liquid collecting bottle 1 from flowing back into the negative pressure device due to the small size of the buffer bottle 2 and the short buffering time, thereby reducing the workload of medical staff; specifically, the liquid level sensing component 42 includes a liquid level sensing rod 43 arranged at the bottom of the buffer bottle cover 22 and extending downward to the inside of the buffer bottle body 21, and the liquid level sensing rod 43 is connected to the controller; further, the control mechanism 4 also includes a buzzer alarm 44 arranged on the side of the buffer bottle cover 22 and connected to the controller; when the liquid level sensing component 42 senses the presence of liquid in the buffer bottle body 21, the buzzer alarm 44 will sound to remind medical staff that the liquid collecting bottle 1 needs to be replaced; further, the controller is a single-chip microcomputer.

[0029] To sum up, with the help of the above-mentioned technical scheme of the utility model, through the cooperation between the liquid collecting bottle 1, the buffer bottle 2 arranged between the liquid collecting bottle 1 and the negative pressure equipment, the solenoid valve 3 arranged in the buffer bottle cover 22 and the control mechanism 4 for controlling the start or close of the solenoid valve 3, the buffer bottle 21 and the negative pressure equipment can be blocked in time to avoid the liquid in the liquid collecting bottle 1 from flowing back into the negative pressure equipment due to the small volume and short buffer time of the buffer bottle 2, thereby reducing the workload of medical staff; in addition, through the cooperation between the wind-driven motor 33 arranged in the airflow channel 24 and the rechargeable battery 34 arranged on the wind-driven motor 33 to power the solenoid valve body 31, the solenoid valve 3 can work stably and the service life of the solenoid valve 3 can be extended; in addition, through the buzzer alarm 44 connected to the controller arranged on the buffer bottle cover 22, when the liquid level sensing component 42 senses the presence of liquid in the buffer bottle body 21, the buzzer alarm 44 makes a sound to remind medical staff that the liquid collecting bottle needs to be replaced.

[0030] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of application of the present invention and the contents of the specification should still fall within the scope covered by the present invention.

Claims

1. A medical suction device, which can be connected to a negative pressure device, characterized in that: It includes a liquid collecting bottle, a buffer bottle, a solenoid valve and a control mechanism; A liquid collecting bottle, used to collect liquid; A buffer bottle is arranged between the liquid collecting bottle and the negative pressure device, comprising a buffer bottle body, a buffer bottle cap arranged at the opening of the buffer bottle body and detachably connected to the buffer bottle body through a thread, and a gas delivery port arranged at one side of the buffer bottle body and connected to the liquid collecting bottle, wherein the buffer bottle cap comprises an air flow channel formed inside the buffer bottle cap, an air inlet arranged at the bottom of the buffer bottle cap and connecting the air flow channel with the inside of the buffer bottle body, and a negative pressure connector arranged at the side of the buffer bottle cap and connecting the air flow channel with the negative pressure device; A solenoid valve, which is set in the buffer bottle cap, can open or close the air inlet; The control mechanism is used to control the start or close of the solenoid valve, including a controller arranged on the buffer bottle cover and connected to the solenoid valve, a control button arranged on the side of the buffer bottle cover and connected to the controller to control the solenoid valve, and a liquid level sensing component arranged in the buffer bottle body and connected to the controller to monitor the internal situation of the buffer bottle body.

2. A medical aspirator according to claim 1, characterized in that: The solenoid valve comprises a solenoid valve body and a battery assembly for supplying power.

3. A medical aspirator according to claim 2, characterized in that: The battery assembly comprises a wind-driven motor arranged in the air flow channel and a rechargeable battery arranged on the wind-driven motor for supplying power to the electromagnetic valve body.

4. A medical aspirator according to claim 1, characterized in that: The liquid level sensing assembly comprises a liquid level sensing rod which is arranged at the bottom of the buffer bottle cover and extends downward to the inside of the buffer bottle body, and the liquid level sensing rod is connected to the controller.

5. A medical aspirator according to claim 1, characterized in that: The buffer bottle cap also includes a gas pressure gauge arranged on the buffer bottle cap and used for measuring the internal pressure of the air flow channel.

6. A medical suction device according to claim 1, characterized in that: The liquid collecting bottle includes a liquid collecting bottle body and a liquid collecting bottle cover detachably connected to the liquid collecting bottle body, and the liquid collecting bottle cover includes a liquid extraction port and an air extraction port respectively arranged on the top thereof, a liquid extraction tube arranged on the liquid extraction port, and an air supply tube connected to the air extraction port at one end and a buffer bottle at the other end.

7. A medical aspirator according to claim 1, characterized in that: The control mechanism also includes a buzzer alarm which is arranged on the side of the buffer bottle cap and connected to the controller.

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