CN115165199A - Small-sized air bag pressure monitoring device - Google Patents

Abstract

The invention discloses a small-sized air bag pressure monitoring device, which relates to the technical field of trachea cannula and is used for detecting the pressure of an air bag on the trachea cannula, wherein a connector is arranged on the air bag, and the small-sized air bag pressure monitoring device comprises a detection assembly and a communication assembly; the detection assembly comprises a shell provided with a detection port and an air pressure detection module arranged in the shell; the air pressure detection module is used for detecting the pressure in the detection port; the communication component comprises a communication piece, a first interface, a second interface and a third interface which are mutually communicated are arranged on the communication piece, the first interface is detachably connected with the connector, the first interface is communicated with the air bag, and the second interface is communicated with the detection port; the third interface is used for leading gas into or out of the communicating piece so as to enable the air pressure in the air bag and the detection port to be synchronously increased or reduced, and then the pressure of the air bag is detected through the air pressure detection module; the use convenience is improved, and the fixing efficiency and the portability of the air bag are improved.

Description

Small airbag pressure monitoring device

technical field

The present invention relates to the technical field of endotracheal intubation, and more particularly, to a small airbag pressure monitoring device.

Background technique

Endotracheal intubation is one of the most widely used and effective tools in airway management. For patients with respiratory dysfunction, endotracheal intubation is an important rescue device. It can assist breathing and can quickly suck out the trachea and hinder breathing. If there are secretions or foreign bodies, the medical staff can manually or mechanically ventilate the patient through tracheal intubation to avoid hypoxia or high carbon dioxide concentration.

The use method of the endotracheal intubation in the related art generally includes: an inflatable fixed balloon is usually provided on the insertion end of the endotracheal intubation for feeding into the airway of the patient, and the fixed balloon is extended to the outside through the catheter to supply gas Introduce, fix the balloon and fix it in the trachea after inflating, so as to achieve the purpose of fixing the insertion depth of the tracheal intubation;

In the process of filling the gas, the medical staff need to manually pinch and wipe the small flexible airbag connected to the fixed airbag at the end of the catheter to sense the airbag pressure. gas;

During the above-mentioned insertion and fixation of the tracheal intubation, the pressure sensing method of the fixed air bag relies too much on the operating experience of the medical staff, and the pressure control accuracy of the fixed air bag is low, resulting in the pressure of the fixed air bag being easily too high or too low, and the excessive air pressure will affect the The side wall of the patient's airway causes compression, and the air pressure is too small to stabilize the tracheal intubation;

At the same time, because the air pressure of the fixed air bag cannot be monitored in real time during the inflation process, medical staff need to repeatedly inflate and deflate to adjust, and the fixing efficiency of the fixed air bag is low, which greatly affects the rescue time;

In addition, although there is a device capable of detecting the pressure of the fixed airbag in the related art, this kind of detection device does not simply detect the pressure of the fixed airbag. It has various functions and is also bulky, so medical staff cannot carry it with them.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a small airbag pressure monitoring device that is portable and can precisely control the airbag pressure.

The technical scheme adopted by the present invention to solve its technical problems is:

The application provides a small airbag pressure monitoring device, the small airbag pressure monitoring device is used to detect the pressure of the airbag on the endotracheal intubation, and the airbag is provided with a connector, characterized in that the small airbag pressure monitoring device includes a detection components and connected components;

The detection assembly includes a housing provided with a detection port, and an air pressure detection module arranged in the housing; the air pressure detection module is used to detect the pressure in the detection port;

The communication assembly includes a communication piece, and the communication piece is provided with a first interface, a second interface and a third interface that communicate with each other, the first interface is detachably connected to the connecting head, and the first interface is connected to the connecting head. the airbag is in communication, and the second interface is in communication with the detection port;

Wherein, the third interface is used for gas to be introduced into or out of the communication member, so that the air pressure in the air bag and the detection port can be raised or lowered synchronously, and then the air pressure detection module can detect the pressure of the air bag. .

In some embodiments, the communication component further includes an intake and exhaust one-way valve disposed in the third interface, and the intake and exhaust one-way valve is used to block or open the third interface.

In some embodiments, a flange is provided on the outer side wall of the connector, an end of the first interface is provided with an escape groove, and the groove wall of the escape groove is provided with a clamping protrusion;

The connecting head can be inserted into the first interface, so that the flange falls into the avoidance groove, and the clamping protrusion is clamped with the flange.

In some embodiments, a jacking member is provided in the first interface, and a connection check valve is provided in the connecting head;

The pushing member is used for pushing the connection check valve to open, so that the first interface communicates with the connection head.

In some embodiments, the connection check valve includes a partition plate with a valve hole, a valve core through the through hole, an elastic member sleeved outside the valve core, and a bracket with a through hole opened plate;

The partition plate and the support plate are arranged in the connecting head at intervals, one end of the elastic member abuts on the support plate, and the other end of the elastic member is connected with the valve core;

Wherein, the valve core can move in a direction away from the support plate under the support of the elastic member, so that the valve core blocks the valve hole and further blocks the connecting head;

The valve core can also be inserted into the through hole under the pressing of the pressing member, so as to open the valve hole and then the connecting head.

In some embodiments, the balloon comprises a fixed balloon provided on the end of the endotracheal tube, an auxiliary balloon provided with a through hole, and a catheter provided on the endotracheal tube;

One end of the conduit extends along the side wall of the tracheal intubation tube and is connected to the fixed balloon, the other end of the conduit extends and is connected to the auxiliary balloon, and the connector is penetrated through the via hole.

In some embodiments, the fixed balloon is in the shape of an inverted cone with a narrow bottom and a wide top.

In some embodiments, the small balloon pressure monitoring device further includes a detection catheter, one end of the detection catheter is detachably connected to the detection port, and the other end of the detection catheter is detachably connected to the second interface.

In some embodiments, the air pressure detection module includes a detection unit for collecting the pressure of the airbag, a main control unit for generating a display instruction according to the collected pressure of the airbag, and a main control unit for generating a display instruction according to the display instruction A display unit that generates an early warning signal; the main control unit is connected to the detection unit and the display unit.

In some embodiments, the air pressure detection module further includes an alarm unit for working according to an alarm instruction generated by the main control unit; the alarm unit is connected to the main control unit.

The small airbag pressure monitoring device of the present invention has at least the following beneficial effects:

The small airbag pressure monitoring device of the present invention relates to the technical field of endotracheal intubation. The small airbag pressure monitoring device includes a communication component and a detection component. A first interface, a second interface and a third interface are provided on the communication member of the communication component through the communication component. , and then the first interface and the connector on the tracheal intubation tube are set to be detachably connected, so as to improve the disassembly and assembly efficiency of the small airbag pressure monitoring device and improve the convenience of use;

Secondly, the second interface is communicated with the detection component, so that when the gas is introduced or exported through the third interface, the pressure of the airbag will increase or decrease synchronously with the pressure in the second interface, so that the detection component can monitor the airbag in real time. pressure to improve the fixing efficiency of the airbag;

At the same time, the communication piece, the housing and the air pressure detection module in the housing do not need to occupy too much space, which can be easily carried by medical staff.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic structural diagram of a small airbag pressure monitoring device in a preferred embodiment of the present invention;

Fig. 2 is an exploded view of the small airbag pressure monitoring device shown in Fig. 1;

Fig. 3 is a partial structural schematic diagram of the small airbag pressure monitoring device shown in Fig. 2;

FIG. 4 is a schematic diagram of the internal structure of a communication member and a connecting one-way valve in a preferred embodiment of the present invention;

Fig. 5 is an enlarged view of the connecting piece and the connecting one-way valve shown in Fig. 4 at A;

6 is a structural diagram of an air pressure detection module in a preferred embodiment of the present invention;

7 is a schematic diagram of a detection unit in a preferred embodiment of the present invention;

8 is a schematic diagram of a main control unit in a preferred embodiment of the present invention;

9 is a schematic diagram of a display unit in a preferred embodiment of the present invention;

10 is a schematic diagram of a display unit in another preferred embodiment of the present invention;

11 is a schematic diagram of an alarm unit in a preferred embodiment of the present invention;

FIG. 12 is a schematic diagram of a power management unit in a preferred embodiment of the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

1 and 2 show a small airbag pressure monitoring device 10 in some preferred embodiments of the present invention. The small airbag pressure monitoring device 10 is used to monitor the pressure of the airbag 20a on the tracheal intubation tube 20, and the airbag 20a is provided with a connector 221a , the connecting head 221a communicates with the airbag 20a, and the airbag 20a can be inflated and deflated through the connecting head 221a.

As shown in FIGS. 1 to 3 , in some embodiments, the balloon 20a includes a fixed balloon 21a provided on the end of the endotracheal tube 20 , an auxiliary balloon 22a provided with a through hole 222a , and an auxiliary balloon 22a provided on the endotracheal tube 20 . One end of the conduit 23a extends along the side wall of the tracheal intubation tube 20 and connects to the fixed balloon 21a, the other end of the conduit 23a extends and connects to the auxiliary balloon 22a, and the connector 221a passes through the through hole 222a.

It can be understood that the fixed balloon 21a is used to penetrate into the airway under the driving of the endotracheal intubation tube 20, the auxiliary balloon 22a is extended through the catheter 23a and exposed outside the patient's mouth, and the connector 221a is used for gas introduction or extraction of the auxiliary balloon 22a, In this way, the fixed airbag 21a is inflated or deflated and contracted, so that the fixed airbag 21a can be fixed, and the hole wall of the via hole 222a can be connected with the connector 221a by means of pasting, hot melting or snapping, etc., in order to effectively seal the via hole. The hole wall of 222a and the connector 221a are preferred.

It should be noted that one end of the endotracheal intubation tube 20 is used to be inserted into the patient's mouth and penetrate deep into the airway, and the other end of the endotracheal intubation tube 20 is used to connect a ventilator or other medical auxiliary equipment to perform manual or mechanical ventilation on the patient; The cannula 20 is provided with a balloon 20a. The balloon 20a includes a fixed balloon 21a, an auxiliary balloon 22a and a catheter 23a. The catheter 23a is respectively connected to the fixed balloon 21a and the auxiliary balloon 22a. The auxiliary balloon 22a is provided with a connector 221a.

As shown in FIGS. 1 to 4 , the small airbag pressure monitoring device 10 includes a detection component 1 and a communication component 2 , the detection component 1 communicates with the connecting head 221 a through the communication component 2 , and the detection component 1 is used for the pressure of the airbag 20 a through the communication component 2 Perform monitoring; the communication component 2 is used to communicate the detection component 1, the airbag 20a and the components for inflation and deflation together, so that the pressure of the airbag 20a can be monitored synchronously during the inflation and deflation of the airbag 20a.

The detection assembly 1 includes a housing 11 and an air pressure detection module 12 . The housing 11 is provided with a detection port 111 , the air pressure detection module 12 is arranged in the housing 11 , and the air pressure detection module 12 is used to detect the pressure in the detection port 111 .

It can be understood that the housing 11 plays the role of housing and protecting the air pressure detection module 12 and other components, and the air pressure detection module 12 may include a common air pressure detection sensor in the related art and a circuit board that drives the air pressure detection sensor to work.

The communication assembly 2 includes a communication piece 21. The communication piece 21 is provided with a first interface 211, a second interface 212 and a third interface 213 that communicate with each other. The first interface 211 is detachably connected to the connector 221a, and the first interface 211 is connected to the airbag. 20a is communicated, and the second interface 212 is communicated with the detection port 111; wherein, the third interface 213 is used for the introduction of gas into or out of the communication member 21, so that the air pressure in the airbag 20a and the detection port 111 can be raised or lowered synchronously, and then the air pressure can pass through the air bag 20a. The detection module 12 detects the pressure of the airbag 20a.

It can be understood that a cavity is provided in the communication member 21, and the first interface 211, the second interface 212 and the third interface 213 are all communicated with the cavity, so that the components connected to each interface can communicate with each other; the first interface 211 and the connector 221a can be connected by a snap connection structure, a magnetic connection structure, a screw fitting structure or other detachable connection structures in the related art; the second interface 212 and the detection port 111 can be connected by a detachable connection structure. The pneumatic connector can be detachably connected, and can also be set as a non-detachable connection, which can be set flexibly according to the needs of use; the gas can be introduced or exported through the third interface 213 by using a gas charging and discharging device or equipment, so that the airbag 20a is inflated and fixed. into the trachea, or by deflating the balloon 20a to adjust the insertion depth.

It can also be understood that when the airbag 20a on the tracheal intubation tube 20 needs to be inflated and deflated, the first interface 211 is connected to the connector 221a, so that the first interface 211 is communicated with the airbag 20a, that is, the airbag 20a is connected to the airbag 20a respectively. The second interface 212 is communicated with the third interface 213, and then the gas is introduced through the gas charging and discharging device or equipment externally connected to the third interface 213, so that the pressure of the airbag 20a is increased. During the pressure increase, the air pressure detection module 12 also The pressure of the airbag 20a can be detected synchronously, so that the pressure adjustment of the airbag 20a and the pressure detection of the airbag 20a can be carried out at the same time, which improves the fixing efficiency of the airbag, and also improves the pressure control accuracy of the airbag 20a, so as to avoid the excessive pressure of the airbag to the patient. The side wall of the airway can cause compression injury, and it can also avoid the insufficient pressure of the air bag to cause the tracheal intubation to be fixed.

As shown in FIG. 3 , in some embodiments, the communication component 2 may further include an intake and exhaust one-way valve 2131 disposed in the third interface 213 , and the intake and exhaust one-way valve 2131 is used to block or open the third interface 213 .

It can be understood that in the natural state of the intake and exhaust check valve 2131, that is, when the pneumatic joint is not connected, the gas in the auxiliary air bag 22a cannot be directly discharged through the intake and exhaust one-way valve 2131, thereby maintaining The function of fixing the pressure of the airbag 21a, and after the third interface 213 is connected to the pneumatic connector on the gas charging and discharging device or the equipment, the pneumatic connector will hold the air intake and exhaust one-way valve 2131 open, so that the gas charging and discharging device can The fixed airbag 21a is inflated and discharged, and after the connection is released, the pressure of the fixed airbag 21a will also remain constant under the action of the intake and exhaust check valve 2131 .

It can also be understood that the air intake and exhaust check valve 2131 can be a common gas one-way valve in the related art, or can be a common pneumatic connector in the related art. Specifically, when the gas charging and discharging device or equipment is not connected The gas leakage of the airbag 20a can be prevented, and the airbag 20a can be opened to communicate with the gas inflating and discharging device when a gas inflating and discharging device or equipment is connected.

As shown in FIG. 4 and FIG. 5 , in some embodiments of the small airbag pressure monitoring device 10 , a flange 223 a is provided on the outer side wall of the connecting head 221 a, and an escape groove 2111 is formed at the end of the first interface 211 to avoid A clamping protrusion 2112 is provided on the groove wall of the position groove 2111;

The connecting head 221a can be inserted into the first interface 211, so that the flange 223a falls into the avoidance groove 2111, and the clamping protrusion 2112 is clamped with the flange 223a.

It can be understood that the flange 223a is used to clamp each other with the clamping protrusion 2112, and the groove wall contour of the avoidance groove 2111 and the outer contour of the flange 223a match each other, effectively eliminating the gap between the avoidance groove 2111 and the flange 223a. The matching gap between the groove walls prevents the flange 223a from coming out of the escape groove 2111, thereby improving the connection reliability and stability.

It can also be understood that in some embodiments, the clamping protrusions 2112 may include annular protrusions disposed on the groove walls of the avoidance grooves 2111 , and may also include spherical protrusions disposed on the groove walls of the space avoidance grooves 2111 . Specifically, it is preferable that the connector 221a and the first interface 211 are not directly separated.

As shown in FIG. 3 and FIG. 4 , in some embodiments of the communication member 21 , the first interface 211 is provided with a jacking member 2113 , and the connecting head 221 a is provided with a connecting check valve 20b ; the jacking member 2113 is used for jacking Keep the connection check valve 20b open, so that the first port 211 communicates with the connection head 221a.

Understandably, after the first interface 211 of the communicating member 21 is assembled and connected with the connector 221a, the holding member 2113 will open the valve core in the connecting one-way valve 20b under the driving of the first interface 211, thereby opening the first interface. There is an interface 211, and after disassembling the first interface 211 and the connector 221a, the jacking member 2113 will also withdraw synchronously, and will no longer hold the connecting check valve 20b, and the connecting check valve 20b will close and isolate the first interface 211, so that the airbag The pressure of 20a is maintained.

As shown in FIG. 4 , in some embodiments, the connection check valve 20b may include a partition plate 21b with a valve hole 211b, a valve core 22b passing through the through hole 241b, an elastic member 23b sleeved outside the valve core 22b, and a support plate 24b having a through hole 241b;

The partition plate 21b and the support plate 24b are arranged in the connecting head 221a at intervals, one end of the elastic member 23b abuts on the support plate 24b, and the other end of the elastic member 23b is connected with the valve core 22b;

The valve core 22b can be moved away from the support plate 24b under the support of the elastic member 23b, so that the valve core 22b can block the valve hole 211b and the connecting head 221a; The 2113 is inserted into the through hole 241b under the pressing force, thereby opening the valve hole 211b and further opening the connecting head 221a.

It can be understood that the partition plate 21b serves to limit the moving position of the valve core 22b; the valve hole 211b is used to connect both sides of the gas partition plate 21b when it is open, and the valve hole 211b is also used to block the partition plate 21b when it is closed. the two sides of the diaphragm 21b, that is, the two sides of the diaphragm 21b cannot be communicated; the valve core 22b is used to move toward the direction close to the diaphragm 21b under the drive of the elastic member 23b, thereby blocking the valve hole 211b, and the valve core 22b is also used for The valve hole 211b is opened by overcoming the elastic force of the elastic member 23b and moving away from the partition plate 21b under the pressing of the lifting member 2113; Other components of force; the support plate 24b is used to define the position of the valve core 22b together with the partition plate 21b from two positions, so as to prevent the valve core 22b from swinging or offset; the through hole 241b is used to provide a moving space for the valve core 22b.

It can also be understood that when the air bag is filled with gas and has a certain pressure, the valve core will be subjected to the force exerted by both the elastic member and the pressure gas in the air bag, so that the elastic force of the elastic member 23b may decrease to a certain extent. Next, ensure that the valve core 22b can still tightly seal the valve hole 211b.

Further, as shown in FIG. 4 , in some embodiments of connecting the one-way valve 20b, a blocking member for blocking the valve hole 211b and a limiting member for limiting the movement distance of the valve core may be provided on the valve core , the blocking member and the limiting member are respectively located on both sides of the partition plate 21b, and the blocking member is in contact with the elastic member 23b.

It can be understood that the blocking member can block the valve hole 211b under the driving of the valve core, and when the jacking member 2113 pushes the valve core to move, the limiting member can prevent the valve core from going too deep and causing dislocation, resulting in the removal of the communicating member. The spool does not reset properly after 21.

As shown in FIG. 1 and FIG. 2 , in some embodiments of the fixed airbag 21a, it may be in the shape of an inverted cone with a narrow bottom and a wide top.

It can be understood that the shape of the lower narrow and upper wide enables the fixing balloon 21a to better fit the patient's trachea, so that the fixing balloon 21a is better fixed in the patient's trachea and improves the stability of the tracheal intubation after being fixed.

As shown in FIG. 1 and FIG. 2 , the small balloon pressure monitoring device 10 may further include a detection catheter 3 in some embodiments, one end of the detection catheter 3 is detachably connected to the detection port 111 , and the other end of the detection catheter 3 is detachable connected to the second interface 212 .

Understandably, the detection catheter 3 is used to communicate with the second interface 212 and the detection port 111, thereby connecting the auxiliary balloon 22a and the detection assembly 1; 3 flexible placement within the length of the range, improving the ease of use.

As shown in FIG. 1 and FIG. 2 , in some embodiments, the detection assembly 1 may further include a power source 13 disposed in the housing 11 , and the power source 13 is electrically connected to the air pressure detection module 12 .

It can be understood that the power source 13 is used to supply power to the air pressure detection module 12; the power source 13 can be set as a detachable or non-detachable battery unit, specifically, the power source 13 can be a lithium battery, and the lithium battery has a high energy density. The battery as the power source 13 can improve the endurance of the detection assembly 1 .

As shown in FIG. 6 , in some embodiments, the air pressure detection module 12 includes a detection unit for collecting the pressure of the airbag, a main control unit for generating a display instruction according to the collected pressure of the airbag, and a warning unit for generating an early warning according to the display instruction Signal display unit; the main control unit connects the detection unit and the display unit.

Further, as shown in FIG. 7 , the detection unit includes an air pressure sensor U2 and a first capacitor C1 in some embodiments; wherein, the model of the air pressure sensor U2 can be BA5803, specifically, the communication address setting end of the air pressure sensor U2 (corresponding to The first DC voltage is connected to the CSB pin); the communication bus of the air pressure sensor U2 (corresponding to its SDA pin and SCLK pin) is connected to the main control unit, so as to send the collected pressure of the airbag to the main control unit.

Further, as shown in FIG. 8 , in some embodiments, the main control unit includes a main control chip U1, a crystal oscillator X1, a third capacitor C3, a fourth capacitor C4, a first capacitor R1, a fourth resistor R4 and a reset switch KEY1; Among them, the model of the main control chip U1 can be STM32F070F6P6. Specifically, the two clock signal input terminals of the main control chip U1 (corresponding to the OSC_IN pin and the OSC_OUT pin) are connected to the two clock signal output terminals of the crystal oscillator X1 in a one-to-one correspondence, and one clock signal output terminal of the crystal oscillator X1 is connected through the first The three capacitors C3 are connected to the ground, the other clock signal output terminal of the crystal oscillator X1 is connected to the ground through the fourth capacitor C4, the mode setting terminal of the main control chip U1 is connected to the ground through the first capacitor R1, and the reset terminal of the main control chip U1 is connected to the ground through the first capacitor R1. The fourth resistor R4 is connected to the first DC voltage, the reset terminal of the main control chip U1 is also connected to the ground through the reset switch KEY1, and several IO ports in the main control chip U1 are connected to the communication bus of the air pressure sensor U2 and the display unit.

Further, as shown in FIG. 9 , in some embodiments, the display unit includes a first indicator LED1 , a second indicator LED2 , a fifth resistor R5 and a sixth resistor U6 . Specifically, the cathodes of the first indicator LED1 and the second indicator LED2 are respectively connected to the IO ports in the main control chip U1 in a one-to-one correspondence to receive corresponding display instructions; the anode of the first indicator LED1 passes through the fifth resistor R5 Connected to the first DC voltage, the anode of the second indicator LED2 is connected to the first DC voltage through the sixth resistor R6.

8 and 9, in this embodiment, the working principle of the display unit is as follows: when the user injects gas into the airbag, when the air pressure sensor U2 detects that the air pressure of the airbag is greater than the inflation warning air pressure value, the main control chip U1 sends the gas to the airbag. A PWM signal is input to the cathode of the first indicator LED1, so that the first indicator LED1 flashes to indicate that the airbag air pressure is close to the ideal air pressure, and then prompts the user to appropriately reduce the gas injection speed. When setting the value, the main control chip U1 sets the cathode of the first indicator LED1 to a low level, so that the first indicator LED1 is on for a long time to indicate that the airbag air pressure has reached the ideal air pressure; after the gas injection is completed, if the airbag is deflated When it is detected that the air pressure of the airbag is less than the deflation warning air pressure value, the main control chip U1 inputs a PWM signal to the cathode of the second indicator LED2, so that the second indicator LED2 flashes to indicate that the airbag begins to deflate, and then prompts The user needs to add gas. When it is detected that the air pressure of the air bag is lower than the air pressure value of the deflation alarm, the main control chip U1 sets the cathode of the second indicator LED2 to a low level, so that the second indicator LED2 is on for a long time to indicate that the air bag has air pressure. Severely insufficient situation; wherein, the deflation warning air pressure value is less than the deflation warning air pressure value.

Further, as shown in FIG. 10 , the display unit includes a display screen M1 in some embodiments; wherein, the display screen M1 may be an OLED display. Specifically, the display screen M1 is connected to the main control unit, and the display screen M1 is used to display the air pressure and the air pressure change rate of the airbag according to the display instruction (the main control unit can perform differential processing on the air pressure of the airbag to obtain).

As shown in FIG. 6 , in some embodiments, the air pressure detection module 12 further includes an alarm unit for working according to an alarm instruction generated by the main control unit; the alarm unit is connected to the main control unit.

Further, as shown in FIG. 11 , in some embodiments, the alarm unit includes a buzzer B1 , a transistor Q1 , an eighth resistor R8 and a ninth resistor R9 . Specifically, the positive pole of the buzzer B1 is connected to the first DC voltage, the negative pole of the buzzer B1 is connected to the collector of the transistor Q1, the emitter of the transistor Q1 and the second end of the ninth resistor R9 are grounded, and the base of the transistor Q1 is connected to the ground The second end of the eighth resistor R8 and the first end of the ninth resistor R9, and the first end of the eighth resistor R8 is connected to the IO port in the main control chip U1.

8 and 11, the working principle of the alarm unit is as follows: after the gas injection is completed, if it is detected that the air pressure of the air bag is less than the deflation warning air pressure value, the first end of the eighth resistor R8 is set high in the main control chip U1 level, the transistor Q1 is turned on, and the buzzer B1 is electrified and beeps for a long time, thereby prompting the user that the airbag is deflated.

As shown in FIG. 12 , in some embodiments, the air pressure detection module 12 further includes a power management unit for converting the power supply 13 into a first DC voltage, which includes a self-locking switch SW1 , a linear voltage regulator chip U4 , and a sixth capacitor C6 , the tenth resistor R10 and the eleventh resistor R11. Specifically, the positive pole of the power supply 13 is connected to the second end of the self-locking switch SW1, the first end of the self-locking switch SW1 is connected to the input end of the linear voltage regulator chip U4, and the self-locking switch SW1 is the power switch of the air pressure detection module 12; The output terminal of the voltage regulator chip U4 is the first DC voltage output terminal connected to the ground (and the negative pole of the power supply 13) through the sixth capacitor C6, and the input terminal of the linear voltage regulator chip U4 is also connected to the ground through the tenth resistor R10 and the eleventh resistor R11 in turn. Connect to the ground; the second end of the tenth resistor R10 is connected to the IO port in the main control chip U1 as a battery voltage collection end, so that the main control chip U1 can The resistance ratio of the eleven resistors R11 calculates the power of the power supply 13 (corresponding to the battery BAT in FIG. 12 ), and can prompt the power status through the display unit.

Correspondingly, as shown in FIG. 9 , in some embodiments, the display unit further includes a power indicator LED3 and a seventh resistor R7 . Specifically, the cathode of the power indicator LED3 is connected to the IO port in the main control chip U1, and the power indicator LED3 is connected to the first DC voltage through the seventh resistor R76. Among them, the working principle of the power indicator LED3 is as follows: when the main control chip U1 detects that the power of the power supply 13 is normal, the main control chip U1 sets the cathode of the power indicator LED3 to a low level, so that the power indicator LED3 is on for a long time. When it is detected that the power of the power supply 13 is lower than the preset low power alarm value, the main control chip U1 inputs a PWM signal to the cathode of the power indicator LED3 to make it flash to remind the user that the power is insufficient.

The small airbag pressure monitoring device of the present invention has at least the following beneficial effects:

The small airbag pressure monitoring device of the present invention relates to the technical field of endotracheal intubation. The small airbag pressure monitoring device includes a communication component and a detection component. A first interface, a second interface and a third interface are provided on the communication member of the communication component through the communication component. , and then the first interface and the connector on the tracheal intubation tube are set to be detachably connected, so as to improve the disassembly and assembly efficiency of the small airbag pressure monitoring device and improve the convenience of use;

Secondly, the second interface is communicated with the detection component, so that when the gas is introduced or exported through the third interface, the pressure of the airbag will increase or decrease synchronously with the pressure in the second interface, so that the detection component can monitor the airbag in real time. pressure to improve the fixing efficiency of the airbag;

At the same time, the communication piece, the housing and the air pressure detection module in the housing do not need to occupy too much space, which can be easily carried by medical staff.

The above embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement accordingly, and cannot limit the protection scope of the present invention. All equivalent changes and modifications made with the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims (10)

1. A small-sized air bag pressure monitoring device is used for detecting the pressure of an air bag (20 a) on an endotracheal tube (20), and a connector (221 a) is arranged on the air bag, and is characterized by comprising a detection assembly (1) and a communication assembly (2);

the detection assembly (1) comprises a shell (11) provided with a detection port (111) and an air pressure detection module (12) arranged in the shell (11); the air pressure detection module (12) is used for detecting the pressure in the detection port (111);

the communication assembly (2) comprises a communication piece (21), a first interface (211), a second interface (212) and a third interface (213) which are communicated with each other are arranged on the communication piece (21), the first interface (211) is detachably connected with the connecting head (221 a), the first interface (211) is communicated with the air bag, and the second interface (212) is communicated with the detection port (111);

the third interface is used for leading gas into or out of the communicating piece (21) so as to enable the air pressure in the air bag and the detection port (111) to be synchronously increased or decreased, and then the pressure of the air bag is detected through the air pressure detection module (12).

2. The small air bag pressure monitoring device according to claim 1, wherein the communication assembly (2) further comprises an air inlet/outlet check valve (2131) disposed in the third port (213), and the air inlet/outlet check valve (2131) is used for blocking or unblocking the third port.

3. The small-sized air bag pressure monitoring device according to claim 1, wherein a flange (223 a) is arranged on the outer side wall of the connecting head (221 a), an avoiding groove (2111) is formed at the end part of the first connector (211), and a clamping protrusion (2112) is arranged on the groove wall of the avoiding groove (2111);

connector (221 a) can insert in first interface (211), so that flange (223 a) falls into keep away in the groove (2111), and make chucking arch (2112) with flange (223 a) chucking mutually.

4. The small-sized air bag pressure monitoring device according to claim 1 or 3, characterized in that a propping piece (2113) is arranged in the first interface (211), and a connecting one-way valve (20 b) is arranged in the connecting head (221 a);

the propping piece (2113) is used for propping the connecting one-way valve (20 b) to be opened so as to enable the first interface (211) to be communicated with the connecting head (221 a).

5. The small-sized air bag pressure monitoring device according to claim 4, wherein the connecting check valve (20 b) comprises a partition plate (21 b) provided with a valve hole (211 b), a valve core (22 b) penetrating through the through hole (241 b), an elastic member (23 b) sleeved outside the valve core (22 b), and a supporting plate (24 b) provided with a through hole (241 b);

the partition plate (21 b) and the supporting plate (24 b) are arranged in the connecting head (221 a) at intervals, one end of the elastic piece (23 b) abuts against the supporting plate (24 b), and the other end of the elastic piece (23 b) is connected with the valve core (22 b);

the valve core (22 b) can move towards a direction away from the supporting plate (24 b) under the jacking of the elastic piece (23 b), so that the valve core (22 b) blocks the valve hole (211 b) and further blocks the connecting head (221 a);

the valve core (22 b) can be inserted into the through hole (241 b) under the supporting of the supporting piece (2113), so that the valve hole (211 b) is opened, and the connecting head (221 a) is opened.

6. The small-sized air bag pressure monitoring device according to claim 1, wherein the air bag comprises a fixed air bag (21 a) arranged on the end of the tracheal cannula (20), an auxiliary air bag (22 a) provided with a through hole (222 a), and a conduit (23 a) arranged on the tracheal cannula (20);

one end of the guide tube (23 a) extends along the side wall of the tracheal cannula (20) and is communicated with the fixed air bag (21 a), the other end of the guide tube (23 a) extends and is communicated with the auxiliary air bag (22 a), and the connector (221 a) penetrates through the through hole (222 a).

7. The small air bag pressure monitoring device according to claim 6, wherein the fixing air bag (21 a) is in the shape of an inverted cone with a narrow lower part and a wide upper part.

8. The small balloon pressure monitoring device according to claim 1, wherein the small balloon pressure monitoring device (10) further comprises a detection catheter (3), one end of the detection catheter (3) is detachably connected to the detection port (111), and the other end of the detection catheter (3) is detachably connected to the second interface (212).

9. The small-sized air bag pressure monitoring device according to claim 1, wherein the air pressure detection module (12) comprises a detection unit for collecting the pressure of the air bag, a main control unit for generating a display instruction according to the collected pressure of the air bag and a display unit for generating an early warning signal according to the display instruction; the main control unit is connected with the detection unit and the display unit.

10. The small-sized air bag pressure monitoring device according to claim 9, characterized in that the air pressure detection module (12) further comprises an alarm unit for operating according to an alarm instruction generated by the main control unit; the alarm unit is connected with the main control unit.

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