Small airbag pressure monitoring device

Abstract

The small airbag pressure monitoring device of the present invention relates to the technical field of endotracheal intubation. The small airbag pressure monitoring device is used to detect the pressure of the airbag on the endotracheal intubation. A connecting head is arranged on the airbag. The small airbag pressure monitoring device includes a detection component and a connecting component; the detection component includes a shell provided with a detection port, and an air pressure detection module arranged in the shell; the air pressure detection module is used to detect the pressure in the detection port; the connecting component includes a connecting piece, and the connecting piece is provided with a first interface, a second interface and a third interface that are interconnected, the first interface is detachably connected to the connecting head, the first interface is connected to the airbag, and the second interface is connected to the detection port; wherein the third interface is used to supply gas to or from the connecting piece, so that the air pressure in the airbag and the detection port is synchronously increased or decreased, and then the pressure of the airbag is detected by the air pressure detection module; the convenience of use is improved, and the fixing efficiency and portability of the airbag are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of endotracheal intubation, and more particularly to a small air bag pressure monitoring device. Background Art

[0002] Endotracheal intubation is one of the most widely used and effective tools in respiratory management. For patients with respiratory dysfunction, endotracheal intubation is an important rescue device. While assisting breathing, it can also quickly suck out secretions or foreign objects in the trachea that hinder breathing. Medical staff can use endotracheal intubation to perform artificial or mechanical ventilation on patients to prevent patients from hypoxia or excessive carbon dioxide concentration.

[0003] The method of using the endotracheal tube in the related art generally includes: an inflatable fixed airbag is usually provided on the insertion end of the endotracheal tube for inserting into the patient's airway, the fixed airbag is extended to the outside through a catheter for gas introduction, and the fixed airbag is fixed in the trachea after being inflated, so as to achieve the purpose of fixing the insertion depth of the endotracheal tube;

[0004] During the gas filling process, medical staff need to manually pinch and swab the small flexible airbag at the end of the catheter that is connected to the fixed airbag to sense the airbag pressure. When the small flexible airbag reaches the predetermined expansion level through finger sensing, the gas input into the catheter is shut off in time.

[0005] During the insertion and fixation process of the above-mentioned endotracheal tube, the pressure sensing method of the fixed airbag is too dependent on the operating experience of medical staff, and the pressure control accuracy of the fixed airbag is low, which makes the pressure of the fixed airbag easily too high or too low. If the air pressure is too high, it will compress the side wall of the patient's respiratory tract, and if the air pressure is too low, the endotracheal tube cannot be stabilized.

[0006] At the same time, since the air pressure of the fixed airbag cannot be monitored in real time during the inflation process, medical staff need to repeatedly inflate and deflate the airbag for adjustment, and the fixing efficiency of the fixed airbag is low, which greatly affects the rescue time;

[0007] In addition, although there are devices in the related art that can detect the pressure of the fixed airbag, this type of detection equipment does not simply detect the pressure of the fixed airbag. It has multiple functions and is also large in size, so medical staff cannot carry it with them. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a portable small airbag pressure monitoring device which can accurately control the airbag pressure.

[0009] The technical solution adopted by the present invention to solve the technical problem is:

[0010] The present application provides a small airbag pressure monitoring device, which is used to detect the pressure of the airbag on the endotracheal tube. A connector is provided on the airbag, and is characterized in that the small airbag pressure monitoring device includes a detection component and a connection component;

[0011] The detection assembly includes a shell provided with a detection port, and an air pressure detection module disposed in the shell; the air pressure detection module is used to detect the pressure in the detection port;

[0012] The communication component includes a communication piece, on which a first interface, a second interface and a third interface are provided that are interconnected, the first interface is detachably connected to the connector, the first interface is connected to the airbag, and the second interface is connected to the detection port;

[0013] The third interface is used for introducing or exporting gas from the connecting piece, so that the air pressure in the airbag and the detection port increases or decreases synchronously, and then the pressure of the airbag is detected by the air pressure detection module.

[0014] In some embodiments, the connecting component further includes an intake and exhaust check valve disposed in the third interface, and the intake and exhaust check valve is used to isolate or open the third interface.

[0015] In some embodiments, a flange is provided on the outer side wall of the connector, a relief groove is provided at the end of the first interface, and a clamping protrusion is provided on the groove wall of the relief groove;

[0016] The connector 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.

[0017] In some embodiments, a supporting member is disposed in the first interface, and a connection check valve is disposed in the connector;

[0018] The holding member is used to hold the connection one-way valve open so that the first interface is connected to the connection head.

[0019] In some embodiments, the connecting one-way valve comprises a partition plate with a valve hole, a valve core penetrating the through hole, an elastic member sleeved outside the valve core, and a support plate with a through hole;

[0020] The partition plate and the support plate are arranged in the connector at intervals, one end of the elastic member abuts against the support plate, and the other end of the elastic member is connected to the valve core;

[0021] 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 connector;

[0022] The valve core can also be inserted into the through hole under the support of the support member, thereby opening the valve hole and further opening the connector.

[0023] In some embodiments, the airbag includes a fixed airbag disposed on the end of the endotracheal tube, an auxiliary airbag with a through hole, and a catheter disposed on the endotracheal tube;

[0024] One end of the catheter extends along the side wall of the endotracheal tube to be connected to the fixed airbag, and the other end of the catheter extends to be connected to the auxiliary airbag, and the connector is inserted into the through hole.

[0025] In some embodiments, the fixed airbag is in the shape of an inverted cone that is narrow at the bottom and wide at the top.

[0026] In some embodiments, the small airbag pressure monitoring device further includes a detection catheter, one end of which is detachably connected to the detection port, and the other end of which is detachably connected to the second interface.

[0027] 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 based on the collected pressure of the airbag, and a display unit for generating a warning signal based on the display instruction; the main control unit is connected to the detection unit and the display unit.

[0028] In some embodiments, the air pressure detection module further includes an alarm unit configured to operate according to an alarm instruction generated by the main control unit; the alarm unit is connected to the main control unit.

[0029] The small airbag pressure monitoring device of the present invention has at least the following beneficial effects:

[0030] The small airbag pressure monitoring device of the present invention relates to the technical field of endotracheal intubation. The small airbag pressure monitoring device comprises a connecting component and a detecting component. A first interface, a second interface and a third interface are arranged on a connecting piece of the connecting component through the connecting component, and then a detachable connection is arranged with a connector on the endotracheal intubation through the first interface, so as to improve the disassembly and assembly efficiency of the small airbag pressure monitoring device and improve the convenience of use.

[0031] Secondly, the second interface is connected to 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 pressure of the airbag in real time, thereby improving the fixing efficiency of the airbag;

[0032] At the same time, the connecting piece, the shell and the air pressure detection module in the shell do not need to occupy too much space and can be convenient for medical staff to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0034] Figure 1 It is a structural schematic diagram of a small airbag pressure monitoring device in a preferred embodiment of the present invention;

[0035] Figure 2 yes Figure 1 An exploded view of the small airbag pressure monitoring device shown;

[0036] Figure 3 yes Figure 2 A partial structural schematic diagram of a small air bag pressure monitoring device shown;

[0037] Figure 4 It is a schematic diagram of the internal structure of the connecting piece and the connecting one-way valve in a preferred embodiment of the present invention;

[0038] Figure 5 yes Figure 4 An enlarged view of the connecting piece and the connecting one-way valve at position A is shown;

[0039] Figure 6 is a structural diagram of an air pressure detection module in a preferred embodiment of the present invention;

[0040] Figure 7 is a schematic diagram of a detection unit in a preferred embodiment of the present invention;

[0041] Figure 8 is a schematic diagram of a main control unit in a preferred embodiment of the present invention;

[0042] Fig. 9 is a schematic diagram of a display unit in a preferred embodiment of the present invention;

[0043] Fig.10 is a schematic diagram of a display unit in another preferred embodiment of the present invention;

[0044] Fig.11 is a schematic diagram of an alarm unit in a preferred embodiment of the present invention;

[0045] Fig.12 It is a schematic diagram of a power management unit in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0047] Figure 1 and Figure 2 A small airbag pressure monitoring device 10 in some preferred embodiments of the present invention is shown. The small airbag pressure monitoring device 10 is used to monitor the pressure of the airbag 20a on the endotracheal tube 20. A connector 221a is provided on the airbag 20a. The connector 221a is connected to the airbag 20a, and the airbag 20a can be inflated and deflated through the connector 221a.

[0048] like Figures 1 to 3 As shown, in some embodiments, the airbag 20a includes a fixed airbag 21a arranged on the end of the endotracheal tube 20, an auxiliary airbag 22a with a through hole 222a, and a catheter 23a arranged on the endotracheal tube 20; one end of the catheter 23a extends along the side wall of the endotracheal tube 20 to connect to the fixed airbag 21a, and the other end of the catheter 23a extends to connect to the auxiliary airbag 22a, and the connector 221a is passed through the through hole 222a.

[0049] It can be understood that the fixed airbag 21a is used to penetrate into the airway under the drive of the endotracheal tube 20, the auxiliary airbag 22a is extended through the catheter 23a and exposed outside the patient's mouth, the connector 221a is used to supply gas to or from the auxiliary airbag 22a, so that the fixed airbag 21a is inflated or deflated, thereby fixing the fixed airbag 21a, and the hole wall of the through hole 222a can be connected to the connector 221a by gluing, hot melting or biting, and it is preferred to be able to effectively seal the hole wall of the through hole 222a and the connector 221a.

[0050] It should be noted that one end of the endotracheal tube 20 is used to be inserted into the patient's mouth and penetrate into the airway, and the other end of the endotracheal tube 20 is used to connect to a ventilator or other medical auxiliary equipment to perform artificial or mechanical ventilation on the patient; the endotracheal tube 20 is provided with an air bag 20a, and the air bag 20a includes a fixed air bag 21a, an auxiliary air bag 22a and a catheter 23a, and the catheter 23a is respectively connected to the fixed air bag 21a and the auxiliary air bag 22a, and a connector 221a is provided on the auxiliary air bag 22a.

[0051] like Figures 1 to 4 As shown, the small airbag pressure monitoring device 10 includes a detection component 1 and a connecting component 2. The detection component 1 is connected to the connector 221a through the connecting component 2. The detection component 1 is used to monitor the pressure of the airbag 20a through the connecting component 2; the connecting component 2 is used to connect the detection component 1, the airbag 20a and the element used for inflation and deflation together, so that the pressure of the airbag 20a can be monitored synchronously during the process of inflation and deflation of the airbag 20a.

[0052] 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 disposed in the housing 11 . The air pressure detection module 12 is used to detect the pressure in the detection port 111 .

[0053] It can be understood that the housing 11 serves to accommodate and protect components such as the air pressure detection module 12 . The air pressure detection module 12 may include an air pressure detection sensor commonly used in the relevant technology and a circuit board that drives the air pressure detection sensor to work.

[0054] The connecting component 2 includes a connecting piece 21, on which a first interface 211, a second interface 212 and a third interface 213 that are interconnected are provided. The first interface 211 is detachably connected to the connecting head 221a, the first interface 211 is connected to the airbag 20a, and the second interface 212 is connected to the detection port 111; wherein the third interface 213 is used for introducing or exporting gas into or out of the connecting piece 21, so that the air pressure in the airbag 20a and the detection port 111 can be synchronously increased or decreased, and then the pressure of the airbag 20a is detected by the air pressure detection module 12.

[0055] It can be understood that a cavity is provided in the connecting piece 21, and the first interface 211, the second interface 212 and the third interface 213 are all connected to the cavity, so that the components respectively connected to each interface can be connected to each other; the first interface 211 and the connecting head 221a can be connected by a snap connection structure, a magnetic connection structure, a threaded matching structure or other detachable connection structures in the relevant technology; the second interface 212 and the detection port 111 can be detachably connected by a detachable pneumatic joint, or can be set as a non-detachable connection, which can be flexibly set according to the specific usage requirements; a gas charging and discharging device or equipment can be used to import or export gas through the third interface 213, so that the airbag 20a can be expanded and fixed in the trachea, or the airbag 20a can be contracted to adjust the insertion depth.

[0056] It can also be understood that when it is necessary to inflate or deflate the airbag 20a on the endotracheal tube 20, the first interface 211 is connected to the connector 221a so that the first interface 211 is connected to the airbag 20a, that is, the airbag 20a is connected to the second interface 212 and the third interface 213 respectively. Subsequently, gas is introduced through a gas charging and discharging device or equipment external to the third interface 213, so that the pressure of the airbag 20a increases. During the pressure increase process, the air pressure detection module 12 can also synchronously detect the pressure of the airbag 20a, thereby achieving simultaneous pressure adjustment of the airbag 20a and pressure detection of the airbag 20a, thereby improving the fixation efficiency of the airbag, and also improving the pressure control accuracy of the airbag 20a, thereby avoiding compression injuries to the patient's respiratory side walls due to excessive airbag pressure, and avoiding insufficient airbag pressure that causes the endotracheal tube to be loosely fixed.

[0057] like Figure 3 As shown, in some embodiments, the connecting component 2 may further include an inlet and outlet check valve 2131 disposed in the third interface 213 , and the inlet and outlet check valve 2131 is used to block or open the third interface 213 .

[0058] It can be understood that when the inlet and exhaust check valve 2131 is in a natural state, that is, when the pneumatic connector is not connected, the gas in the auxiliary airbag 22a cannot be directly discharged through the inlet and exhaust check valve 2131, thereby maintaining the pressure of the fixed airbag 21a. After the third interface 213 is connected to the pneumatic connector on the gas charging and discharging device or equipment, the pneumatic connector will hold the inlet and exhaust check valve 2131 open, so that the gas charging and discharging device can charge and discharge the fixed airbag 21a. After the connection is released, the pressure of the fixed airbag 21a will also be kept constant under the action of the inlet and exhaust check valve 2131.

[0059] It can also be understood that the air intake and exhaust check valve 2131 can be a gas check valve commonly used in the relevant technology, or a pneumatic connector commonly used in the relevant technology, which can specifically prevent gas leakage of the airbag 20a when the gas charging and discharging device or equipment is not connected, and can open the airbag 20a to connect with the gas charging and discharging device when the gas charging and discharging device or equipment is connected.

[0060] like Figure 4 and Figure 5 As shown, in some embodiments of the small airbag pressure monitoring device 10, a flange 223a is provided on the outer wall of the connector 221a, a relief groove 2111 is provided at the end of the first interface 211, and a clamping protrusion 2112 is provided on the groove wall of the relief groove 2111;

[0061] The connector 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.

[0062] It can be understood that the flange 223a is used to clamp with the clamping protrusion 2112, and the groove wall contour of the avoidance groove 2111 matches the outer edge contour of the flange 223a, effectively eliminating the fitting gap between the groove wall of the avoidance groove 2111 and the flange 223a, preventing the flange 223a from falling out of the avoidance groove 2111, thereby improving the connection reliability and stability.

[0063] It can also be understood that the clamping protrusion 2112 may include an annular raised edge arranged on the groove wall of the avoidance groove 2111 in some embodiments, and may also include a spherical protrusion arranged on the groove wall of the avoidance groove 2111, and it is preferred that the connecting head 221a and the first interface 211 will not be directly separated.

[0064] like Figure 3 and Figure 4 As shown, in some embodiments of the connecting piece 21, a supporting piece 2113 is provided in the first interface 211, and a connecting one-way valve is provided in the connecting head 221a; the supporting piece 2113 is used to support the connecting one-way valve to open so that the first interface 211 is connected with the connecting head 221a.

[0065] It can be understood that after the first interface 211 of the connecting piece 21 is assembled and connected with the connecting head 221a, the supporting member 2113 will, driven by the first interface 211, support the valve core in the connecting one-way valve to open, thereby opening the first interface 211. After the first interface 211 and the connecting head 221a are disassembled, the supporting member 2113 will also be withdrawn synchronously and will no longer support the connecting one-way valve. The connecting one-way valve closes and isolates the first interface 211, so that the pressure of the airbag 20a is maintained.

[0066] like Figure 4 As shown, in some embodiments, the connecting one-way valve may include a partition plate 21b with a valve hole 211b, a valve core 22b with a through hole 241b, an elastic member 23b sleeved on the valve core 22b, and a support plate 24b with a through hole 241b;

[0067] The partition plate 21b and the support plate 24b are spaced apart and arranged in the connector 221a, one end of the elastic member 23b abuts against the support plate 24b, and the other end of the elastic member 23b is connected to the valve core 22b;

[0068] Among them, the valve core 22b can move in the direction away from the support plate 24b under the support of the elastic member 23b, so that the valve core 22b blocks the valve hole 211b and then blocks the connecting head 221a; the valve core 22b can also be inserted into the through hole 241b under the support of the supporting member 2113, thereby opening the valve hole 211b and then opening the connecting head 221a.

[0069] It can be understood that the partition 21b plays a role in limiting the moving position of the valve core 22b; the valve hole 211b is used to connect the two sides of the gas partition 21b when it is open, and the valve hole 211b is also used to separate the two sides of the partition 21b when it is closed, that is, the two sides of the partition 21b cannot be connected; the valve core 22b is used to move toward the direction close to the partition 21b under the drive of the elastic member 23b, thereby blocking the valve hole 211b, and the valve core 22b is also used to overcome the elastic force of the elastic member 23b under the support of the support member 2113 and move in the direction away from the partition 21b, thereby opening the valve hole 211b; the elastic member 23b can be a spring, and can also be other components commonly used in the relevant technology that can provide elastic reset force; the support plate 24b is used to jointly limit the position of the valve core 22b with the partition 21b from two positions to prevent the valve core 22b from swinging or deflecting; the through hole 241b is used to provide a moving space for the valve core 22b.

[0070] It can also be understood that when the airbag is filled with gas with a certain pressure, the valve core will be subjected to the force exerted by both the elastic member and the pressure gas in the airbag. In this way, when the elastic force of the elastic member 23b decreases to a certain extent, it can be ensured that the valve core 22b can still tightly block the valve hole 211b.

[0071] Furthermore, if Figure 4 As shown, in some embodiments of connecting the one-way valve, a blocking member for blocking the valve hole 211b and a limiting member for limiting the movement distance of the valve core can be provided on the valve core. The blocking member and the limiting member are respectively located on both sides of the partition 21b, and the blocking member abuts against the elastic member 23b.

[0072] It can be understood that the blocking member can block the valve hole 211b under the drive of the valve core. When the supporting member 2113 supports the valve core to move, the limiting member can prevent the valve core from going too deep and being misplaced, resulting in the valve core being unable to be correctly reset after the connecting member 21 is removed.

[0073] like Figure 1 and Figure 2 As shown, in some embodiments, the fixed airbag 21a may be in the shape of an inverted cone that is narrow at the bottom and wide at the top.

[0074] It can be understood that the shape of being narrow at the bottom and wide at the top enables the fixing airbag 21a to fit the patient's trachea more closely, so that the fixing airbag 21a is better fixed in the patient's trachea, thereby improving the stability of the tracheal tube after fixation.

[0075] like Figure 1 and Figure 2 As shown, in some embodiments, the small airbag pressure monitoring device 10 may further include a detection catheter 3 , one end of which is detachably connected to the detection port 111 , and the other end of which is detachably connected to the second interface 212 .

[0076] It can be understood that the detection catheter 3 is used to connect the second interface 212 and the detection port 111, thereby connecting the auxiliary airbag 22a and the detection component 1; the setting of the detection catheter 3 enables the detection component 1 to be flexibly placed within the length range of the detection catheter 3 when detecting the pressure of the airbag 20a, thereby improving the convenience of use.

[0077] like Figure 1 and Figure 2 As shown, in some embodiments, the detection assembly 1 may further include a power supply 13 disposed in the housing 11 , and the power supply 13 is electrically connected to the air pressure detection module 12 .

[0078] It can be understood that the power supply 13 is used to power the air pressure detection module 12; the power supply 13 can be set as a detachable or non-detachable battery unit. Specifically, the power supply 13 can be a lithium battery. The lithium battery has a higher energy density. Using a lithium battery as the power supply 13 can improve the endurance of the detection component 1.

[0079] like Figure 6 As shown, 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 display unit for generating a warning signal according to the display instruction; the main control unit connects the detection unit and the display unit.

[0080] Furthermore, if Figure 7 As shown, the detection unit in some embodiments includes an air pressure sensor U2 and a first capacitor C1; 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 CSB pin) is connected to the first DC voltage; the communication bus of the air pressure sensor U2 (corresponding to its SDA pin and SCLK pin) is connected to the main control unit to send the collected airbag pressure to the main control unit.

[0081] Furthermore, if Figure 8 As shown, 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; wherein, the model of the main control chip U1 may 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 one-to-one with the two clock signal output terminals of the crystal oscillator X1, one clock signal output terminal of the crystal oscillator X1 is connected to the ground via the third capacitor C3, and the other clock signal output terminal of the crystal oscillator X1 is connected to the ground via the fourth capacitor C4, the mode setting terminal of the main control chip U1 is connected to the ground via the first capacitor R1, the reset terminal of the main control chip U1 is connected to the first DC voltage via the fourth resistor R4, and the reset terminal of the main control chip U1 is also connected to the ground via the reset switch KEY1, and several IO ports in the main control chip U1 are connected to the communication bus and the display unit of the air pressure sensor U2.

[0082] Furthermore, if Fig. 9As shown, 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 is connected to the first DC voltage via the fifth resistor R5, and the anode of the second indicator LED2 is connected to the first DC voltage via the sixth resistor R6.

[0083] refer to Figure 8 and Fig. 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 inputs a PWM signal to the cathode of the first indicator LED1, causing the first indicator LED1 to flash, to indicate that the air pressure of the airbag is close to the ideal air pressure, thereby prompting the user to appropriately reduce the injection speed of the gas. When it is detected that the air pressure of the airbag is greater than the preset value of the ideal air pressure, the main control chip U1 sets the cathode of the first indicator LED1 to a low level, causing the first indicator LED1 to light up, to indicate that the air pressure of the airbag has reached the ideal pressure. If the airbag is deflated after the gas injection is completed, when it is detected that the air pressure of the airbag is less than the deflation warning pressure value, the main control chip U1 inputs a PWM signal to the cathode of the second indicator light LED2, causing the second indicator light LED2 to flash, to indicate that the airbag is beginning to deflate, thereby prompting the user to replenish gas; when it is detected that the air pressure of the airbag is less than the deflation alarm pressure value, the main control chip U1 sets the cathode of the second indicator light LED2 to a low level, causing the second indicator light LED2 to stay on, to indicate that the airbag is seriously lacking in air pressure; wherein, the deflation alarm pressure value is less than the deflation warning pressure value.

[0084] Furthermore, if Fig.10 As shown, in some embodiments, the display unit includes a display screen M1; 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 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 it).

[0085] like Figure 6 As shown, in some embodiments, the air pressure detection module 12 also includes an alarm unit for operating according to an alarm instruction generated by the main control unit; the alarm unit is connected to the main control unit.

[0086] Furthermore, if Fig.11As shown, 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 electrode of the buzzer B1 is connected to the first DC voltage, the negative electrode 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, the base of the transistor Q1 is connected to 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.

[0087] refer to Figure 8 and Fig.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 airbag is lower than the deflation warning pressure value, the first end of the eighth resistor R8 in the main control chip U1 is set to a high level, so that the transistor Q1 is turned on, and the buzzer B1 is energized and sounds long, thereby notifying the user that the airbag is deflated.

[0088] like Fig.12 As shown, in some embodiments, the air pressure detection module 12 also 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, a sixth capacitor C6, a tenth resistor R10 and an eleventh resistor R11. Specifically, the positive electrode of the power supply 13 is connected to the second end of the self-locking switch SW1, and the first end of the self-locking switch SW1 is connected to the input end of the linear voltage regulator chip U4. The self-locking switch SW1 is the power switch of the air pressure detection module 12; the output end of the linear voltage regulator chip U4 is the first DC voltage output end connected to the ground (and the negative electrode of the power supply 13) through the sixth capacitor C6, and the input end of the linear voltage regulator chip U4 is also connected to the ground through the tenth resistor R10 and the eleventh resistor R11 in sequence; 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 calculate the power supply 13 (corresponding to) according to the voltage of the second end of the tenth resistor R10 and the resistance ratio of the tenth resistor R10 and the eleventh resistor R11. Fig.12 The battery level (BAT) in the battery can be monitored and the battery level can be prompted through the display unit.

[0089] Accordingly, if Fig. 9As shown, 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 via the seventh resistor R76. The working principle of the power indicator LED3 is as follows: when the main control chip U1 detects that the power level 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 always on; when it is detected that the power level 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, so that it flashes, to prompt the user that the power is low.

[0090] The small airbag pressure monitoring device of the present invention has at least the following beneficial effects:

[0091] The small airbag pressure monitoring device of the present invention relates to the technical field of endotracheal intubation. The small airbag pressure monitoring device comprises a connecting component and a detecting component. A first interface, a second interface and a third interface are arranged on a connecting piece of the connecting component through the connecting component, and then a detachable connection is arranged with a connector on the endotracheal intubation through the first interface, so as to improve the disassembly and assembly efficiency of the small airbag pressure monitoring device and improve the convenience of use.

[0092] Secondly, the second interface is connected to 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 pressure of the airbag in real time, thereby improving the fixing efficiency of the airbag;

[0093] At the same time, the connecting piece, the shell and the air pressure detection module in the shell do not need to occupy too much space and can be convenient for medical staff to carry.

[0094] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot limit the scope of protection of the present invention. All equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A small airbag pressure monitoring device, used for detecting the pressure of an airbag (20a) on a tracheal tube (20), wherein the airbag is provided with a connector (221a), characterized in that: The small airbag pressure monitoring device comprises a detection component (1) and a connection component (2); The detection component (1) comprises a housing (11) provided with a detection port (111), and an air pressure detection module (12) arranged in the housing (11); the air pressure detection module (12) is used to detect the pressure in the detection port (111); The communication component (2) comprises a communication piece (21), the communication piece (21) being provided with a first interface (211), a second interface (212) and a third interface (213) which are interconnected, the first interface (211) being detachably connected to the connector (221a), the first interface (211) being connected to the airbag, and the second interface (212) being connected to the detection port (111); The third interface is used for introducing or exporting gas into or out of the connecting piece (21), so that the air pressure in the airbag and the detection port (111) increases or decreases synchronously, and the pressure of the airbag is detected by the air pressure detection module (12); The airbag comprises a fixed airbag (21a) arranged on the end of the endotracheal tube (20), an auxiliary airbag (22a) provided with a through hole (222a), and a catheter (23a) arranged on the endotracheal tube (20); One end of the catheter (23a) extends along the side wall of the endotracheal tube (20) to be connected to the fixed airbag (21a), and the other end of the catheter (23a) extends to be connected to the auxiliary airbag (22a), and the connector (221a) is inserted into the through hole (222a); The fixed air bag (21a) is in the shape of an inverted cone that is narrow at the bottom and wide at the top; A supporting piece (2113) is provided in the first interface (211), and a connecting one-way valve is provided in the connecting head (221a); The holding member (2113) is used to hold the connection one-way valve open, so that the first interface (211) is connected to the connection head (221a); The connecting one-way valve comprises a partition plate (21b) provided with a valve hole (211b), a valve core (22b), an elastic member (23b) sleeved outside the valve core (22b), and a support plate (24b) provided with a through hole (241b); The valve core (22b) is provided with the 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 against the support plate (24b), and the other end of the elastic member (23b) is connected to the valve core (22b); Wherein, the valve core (22b) can move in a direction away from the support plate (24b) under the support of the elastic member (23b), so that the valve core (22b) blocks the valve hole (211b) and further blocks the connector (221a); The valve core (22b) can also be inserted into the through hole (241b) under the support of the support member (2113), thereby opening the valve hole (211b) and further opening the connector (221a).

2. The small airbag pressure monitoring device according to claim 1, characterized in that: The connecting component (2) further comprises an inlet and outlet one-way valve (2131) arranged in the third interface (213), wherein the inlet and outlet one-way valve (2131) is used to block or open the third interface.

3. The small airbag pressure monitoring device according to claim 1, characterized in that: A flange (223a) is provided on the outer side wall of the connector (221a); ​​a relief groove (2111) is provided at the end of the first interface (211); and a clamping protrusion (2112) is provided on the groove wall of the relief 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).

4. The small airbag pressure monitoring device according to claim 1, characterized in that: The small airbag pressure monitoring device (10) further comprises a detection catheter (3), one end of the detection catheter (3) being detachably connected to the detection port (111), and the other end of the detection catheter (3) being detachably connected to the second interface (212).

5. The small airbag pressure monitoring device according to claim 1, characterized in that: The air pressure detection module (12) comprises 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 display unit for generating a warning signal according to the display instruction; the main control unit is connected to the detection unit and the display unit.

6. The small airbag pressure monitoring device according to claim 5, characterized in that: The air pressure detection module (12) further comprises an alarm unit used to operate according to an alarm instruction generated by the main control unit; the alarm unit is connected to the main control unit.

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