Continuous airbag pressure monitor capable of automatically adjusting airbag pressure

Abstract

The invention discloses a continuous balloon pressure monitor capable of automatically adjusting balloon pressure, and relates to the technical field of medical instruments.The continuous balloon pressure monitor comprises a monitoring box body, an elastic adhesive tape, a microprocessor and a pressure measuring balloon, a visual window is connected to the outer side of the monitoring box body in a penetrating mode, and a positioning mechanism is arranged on the outer side of the monitoring box body; the positioning mechanism is used for constraining and positioning the back of the monitoring box body and limiting the monitoring box body according to monitoring requirements to ensure the operation stability of electronic components of the monitoring box body, a monitoring mechanism is arranged on one side of the monitoring box body, and the monitoring mechanism is used for adjusting the pressure of a pressure measuring air bag through deflation or inflation. And the oxygen is controlled in a normal range in the oxygen conveying process. The pressure measuring air bag serves as a core assembly of a trachea cannula or a tracheotomy cannula in mechanical auxiliary ventilation, the pressure measuring air bag is tightly attached to the wall of the conical cannula after being inflated and expanded, a closed space is formed, and gas leakage or oral secretion mistakenly inhaled into the lung during ventilation is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a continuous cuff pressure monitor capable of automatically adjusting the cuff pressure. BACKGROUND

[0002] A tracheal tube is a medical device inserted into the trachea and / or bronchus of a patient to create a temporary artificial respiratory passage for the patient, especially for patients who cannot breathe independently. The pressure of the inflatable cuff on the tracheal tube needs to be maintained within a certain range. Currently, the guidelines at home and abroad indicate that the range of the inflatable cuff pressure is 18-22 mmHg. If the pressure in the inflatable cuff is too high, it will cause the inflatable cuff to compress the patient's trachea and / or bronchus, resulting in tracheal and / or bronchial injury.

[0003] The current situation in clinical practice is that real-time monitoring of the cuff pressure of the tracheal tube or tracheal cuff is not possible. By controlling the cuff pressure within the ideal range, it is possible to avoid airway injury caused by excessive cuff pressure or dislodgement caused by insufficient cuff pressure, and to reduce the incidence of adverse events such as tracheal cuff leakage and catheter slippage. In addition, the cuff pressure monitor is generally placed on the desktop, which occupies a certain amount of desktop space and is not convenient for medical personnel to observe. SUMMARY

[0004] The present application aims to provide a continuous cuff pressure monitor capable of automatically adjusting the cuff pressure to solve the above-mentioned defects in the prior art.

[0005] A continuous cuff pressure monitor capable of automatically adjusting the cuff pressure, comprising a monitoring box, an elastic tape, a microprocessor and a pressure measuring cuff, a visible window is connected through the outside of the monitoring box, a positioning mechanism is arranged on the outside of the monitoring box, the positioning mechanism binds and positions the back of the monitoring box, and then limits the monitoring box according to the monitoring requirements, ensuring the stability of the electronic components of the monitoring box, a monitoring mechanism is arranged on one side of the monitoring box, the monitoring mechanism adjusts the pressure of the pressure measuring cuff by deflation or inflation, so that the oxygen delivery process is controlled within the normal range.

[0006] Preferably, the positioning mechanism comprises a sub-magic tape, an elastic tape, a mother magic tape and a tape passing shaft, the sub-magic tape is arranged on the outside of the elastic tape, a plurality of mother magic tapes are arranged at equal intervals on the outside of the elastic tape, one side of the monitoring box is connected to the other end of the elastic tape, and the other side of the monitoring box is connected to the tape passing shaft.

[0007] Preferably, the monitoring box is connected to the outside of the elastic tape through the tape passing shaft arranged on one side.

[0008] Preferably, the monitoring mechanism comprises a conical sleeve, an oxygen tube, an air injection tube, a piezoresistive sensor, a microprocessor, a micro electromagnetic inflation valve, a piezoelectric ceramic deflation valve and a pressure measuring air bag, one side of the conical sleeve is provided with an oxygen tube, the outer side of the other group of oxygen tubes is connected through an air injection tube, the other end of the air injection tube is connected with a pressure measuring air bag, the pressure measuring air bag is arranged in the conical sleeve, the tail end of the air injection tube is connected with the output end of the piezoelectric ceramic deflation valve, the piezoelectric ceramic deflation valve and the micro electromagnetic inflation valve are installed in the inside of the monitoring box, the microprocessor is installed in the inside of the monitoring box, the piezoresistive sensor, the micro electromagnetic inflation valve and the piezoelectric ceramic deflation valve are electrically connected with the microprocessor, and the piezoresistive sensor is connected with the air injection tube through a valve.

[0009] Preferably, the oxygen tube is connected with the tail end of the other group of oxygen tubes through the conical sleeve arranged on one side.

[0010] Preferably, the pressure measuring air bag is connected with the output end of the micro electromagnetic inflation valve through the air injection tube connected on one side.

[0011] Compared with the prior art, the present application has the following advantages:

[0012] 1. The pressure measuring air bag is the core component of the tracheal cannula or tracheostomy cannula in mechanical assisted ventilation, and after inflation, the pressure measuring air bag is closely attached to the wall of the conical sleeve to form a sealed space, preventing gas leakage or oral secretion from being accidentally inhaled into the lungs during ventilation, and through the sensor, the air bag pressure is monitored in real time, and the value is continuously displayed through the visual device, so that the pressure is always in a safe range, and during the operation of the device, the system automatically performs inflation / deflation operation according to the sensor feedback, so as to offset the pressure abnormality caused by body position change (such as increased pressure in supine position), sputum suction operation or mechanical ventilation fluctuation.

[0013] 2. The pressure measuring air bag is usually made of soft materials such as polyurethane, and its excellent biocompatibility ensures that there is no toxic reaction in long-term contact with tracheal tissue, and it is suitable for short-term and long-term clinical needs. When the annular is in a semi-recumbent position, the local pressure of the air bag on the tracheal wall can be minimized, avoiding uneven pressure and mucosal damage caused by supine position, and through the elastic belt and the mother and child magic tape, the device is bound and positioned, the monitoring box is positioned, the transfer efficiency of the precision valve body is improved (5 times faster than the traditional screw fixing), and the shockproof and quick disassembly requirements of medical treatment are met. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the whole three-dimensional structure of the present application.

[0015] Figure 2 It is a schematic diagram of the inside of the conical sleeve in the present application.

[0016] Figure 3The internal structure diagram of the monitoring box in the application is shown.

[0017] Figure 4 The release diagram of the pressure measuring air bag in the application is shown.

[0018] Figure 5 The structure diagram of the cleaning tank itself in the application is shown.

[0019] Wherein:

[0020] 1, monitoring box; 2, visible window; 3, sub magic tape; 4, elastic tape; 5, mother magic tape; 6, positioning mechanism; 7, belt shaft body; 8, monitoring mechanism; 9, tapered sleeve; 10, oxygen pipe; 11, gas injection pipe; 12, piezoresistive sensor; 13, microprocessor; 14, micro electromagnetic inflation valve; 15, piezoelectric ceramic deflation valve; 16, pressure measuring air bag. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the application is further described below in combination with specific embodiments.

[0022] As shown in Figures 1 to 5 A continuous bag pressure monitor for automatically adjusting air bag pressure, comprising a monitoring box 1, an elastic tape 4, a microprocessor 13 and a pressure measuring air bag 16, the outer side of the monitoring box 1 is connected with a visible window 2, the outer side of the monitoring box 1 is provided with a positioning mechanism 6, the positioning mechanism 6 binds and positions the back of the monitoring box 1, and then limits the monitoring box 1 according to the monitoring requirements, to ensure the stability of the electronic components of the monitoring box 1, one side of the monitoring box 1 is provided with a monitoring mechanism 8, the monitoring mechanism 8 adjusts the pressure of the pressure measuring air bag 16 by deflation or inflation, so that the oxygen delivery process is controlled within a normal range.

[0023] In this embodiment, the positioning mechanism 6 comprises a sub magic tape 3, an elastic tape 4, a mother magic tape 5 and a belt shaft body 7, the sub magic tape 3 is arranged on the outer side of the elastic tape 4, a plurality of groups of mother magic tapes 5 are arranged at equal intervals on the outer side of the elastic tape 4, one side of the monitoring box 1 is connected to the other end of the elastic tape 4, and the other side of the monitoring box 1 is connected to the belt shaft body 7, the sub magic tape 3 is attached to the mother magic tape 5 arranged at equal intervals, which facilitates winding and positioning of the elastic tape 4.

[0024] In this embodiment, the monitoring box 1 is connected to the outer side of the elastic tape 4 through the belt shaft body 7 arranged on one side, and the outer side of the elastic tape 4 is limited by the belt shaft body 7, which facilitates the positioning and installation of the monitoring box 1.

[0025] In the embodiment, the monitoring mechanism 8 comprises a conical sleeve 9, an oxygen pipe 10, an air injection pipe 11, a piezoresistive sensor 12, a microprocessor 13, a micro electromagnetic inflation valve 14, a piezoelectric ceramic deflation valve 15, and a pressure measuring air bag 16, one side of the conical sleeve 9 is provided with the oxygen pipe 10, the outer side of the other group of the oxygen pipe 10 is connected through the air injection pipe 11, the other end of the air injection pipe 11 is connected with the pressure measuring air bag 16, the pressure measuring air bag 16 is arranged in the conical sleeve 9, the tail end of the air injection pipe 11 is connected with the output end of the piezoelectric ceramic deflation valve 15, the piezoelectric ceramic deflation valve 15 and the micro electromagnetic inflation valve 14 are installed in the inside of the monitoring box 1, the microprocessor 13 is installed in the inside of the monitoring box 1, the piezoresistive sensor 12, the micro electromagnetic inflation valve 14, and the piezoelectric ceramic deflation valve 15 are electrically connected with the microprocessor 13, the piezoresistive sensor 12 is connected with the air injection pipe 11 through the valve, and the microprocessor 13 realizes the cooperative control of the micro electromagnetic inflation valve 14 and the piezoelectric ceramic deflation valve 15 through the driving circuit, the power management module and the gas path interface.

[0026] In the embodiment, the oxygen pipe 10 is connected with the tail end of the other side of the oxygen pipe 10 through the conical sleeve 9 arranged through one side, and is connected through the conical sleeve 9 and the air injection pipe 11, and is attached to the inner wall of the arc-shaped conical sleeve 9 through the pressure measuring air bag 16, so that the precision of pressure control is improved.

[0027] In the embodiment, the pressure measuring air bag 16 is connected with the output end of the micro electromagnetic inflation valve 14 through the air injection pipe 11 connected on one side, the air volume of the pressure measuring air bag 16 is controlled through the air injection pipe 11 by the micro electromagnetic inflation valve 14, and then the pressure is effectively controlled.

[0028] The continuous air bag pressure monitoring instrument capable of automatically adjusting the air bag pressure includes the following working contents in actual application.

[0029] Step 1: medical staff installs two pipe connectors on the other end of the air injection pipe 11, the two pipe connectors are respectively connected with the micro electromagnetic inflation valve 14 and the piezoelectric ceramic deflation valve 15, then the elastic tape 4 is inserted into the head of the bed, then the elastic tape 4 is inserted into the outside of the tape insertion shaft body 7, and then the elastic tape 4 is bent in the opposite direction, so that the female magic tape 5 arranged on the outside of the elastic tape 4 is attached to the male magic tape 3 of the elastic tape 4, and then the positioning treatment of the monitoring box 1 is completed, so as to avoid the shaking of the hardware in the inside of the monitoring box 1 during the operation process;

[0030] Step 2: The piezoresistive sensor 12 collects the pressure inside the pressure measuring balloon 16 in the conical sleeve 9 in real time, eliminates environmental interference through a temperature compensation module, transmits to the microprocessor 13, and the microprocessor 13 is provided with a liquid crystal screen on the outside to continuously display the pressure curve. When the pressure is abnormal, the sound and light alarm is triggered. The operator displays the data through the visual window 2 provided on the outside of the box body 1. If the pressure in the pressure measuring balloon 16 is too high, the piezoelectric ceramic deflation valve 15 is opened for 0.2 seconds through the command of the microprocessor 13 below, and 0.5-1 ml of gas is accurately released. The gas in the pressure measuring balloon 16 is extracted by the gas injection tube 11;

[0031] Step 3: If the pressure in the pressure measuring balloon 16 is too low, the micro electromagnetic inflation valve 14 is instructed through the microprocessor 13 below. When the micro electromagnetic inflation valve 14 is started and runs for 0.5 seconds, 1-2 ml of compressed gas is injected through the gas injection tube 11, so that the gas injection tube 11 injects gas into the inside of the pressure measuring balloon 16, so that the outside of the pressure measuring balloon 16 is attached to the inner end of the conical sleeve 9. The pressure measuring balloon 16 automatically performs the inflation / deflation operation, offsets the pressure anomaly caused by body position change (such as increased pressure when lying flat), sputum suction operation or mechanical ventilation fluctuation, and uses the pressure measuring balloon 16 to block or reduce the pressure of one end of the oxygen tube 10;

[0032] Step 4: After the pressure measuring balloon 16 is inflated, the closed pressure is maintained at 25-30 cmH2O to ensure that there is no gas leakage between the conical sleeve 9 and the oxygen tube 10. If the balloon pressure is <20 cmH2O (low pressure), the sealing between the conical sleeve 9 and the oxygen tube 10 fails, so that oxygen escapes from the airway gap and the actual oxygen flow into the lungs is reduced. The output pressure of the oxygen source needs to be increased to compensate for the gas leakage. If the pressure of the pressure measuring balloon 16 is >35 cmH2O (high pressure), the mucosa of the oxygen tube 10 is deformed under pressure, and the inner diameter of the oxygen tube 10 is locally narrowed, so that the oxygen flow resistance of the oxygen tube 10 increases, and the downstream pressure is passively increased;

[0033] Step 5: When the patient changes from a semi-recumbent position to a flat position, the pressure inside the pressure measuring balloon 16 increases the internal pressure of the conical sleeve 9 by 4-6 cmH2, so that the cross-sectional area of the oxygen tube 10 is reduced, the oxygen flow resistance of the oxygen tube 10 is increased, and at the same time the downstream pressure of the oxygen tube 10 is increased. Part of the system is linked through the body position sensor, and the target pressure of the pressure measuring balloon 16 is automatically lowered (such as to 22-26 cmH2O) to offset the effect.

[0034] Thus, the embodiments disclosed above are merely exemplary, and nothing that is only an example. All changes within the scope of the invention or equivalent to the scope of the invention are included in the invention.

Claims

1. A continuous airbag pressure monitor capable of automatically adjusting airbag pressure, characterized in that: The invention comprises a monitoring box (1), an elastic tape (4), a microprocessor (13) and a pressure measuring airbag (16); a visual window (2) is connected through the outer side of the monitoring box (1); a positioning mechanism (6) is provided on the outer side of the monitoring box (1); the positioning mechanism (6) restrains and positions the back of the monitoring box (1), and then limits the monitoring box (1) according to the monitoring requirements, thereby ensuring the stability of the operation of the electronic components of the monitoring box (1); a monitoring mechanism (8) is provided on one side of the monitoring box (1); the monitoring mechanism (8) adjusts the pressure of the pressure measuring airbag (16) by deflating or inflating, so that the pressure is controlled within a normal range during the oxygen delivery process.

2. The continuous airbag pressure monitor capable of automatically adjusting airbag pressure according to claim 1, characterized in that: The positioning mechanism (6) comprises a child Velcro (3), an elastic tape (4), a mother Velcro (5), and a tape threading shaft (7); the child Velcro (3) is arranged on the outside of the elastic tape (4); and a plurality of groups of mother Velcro (5) are arranged at equal intervals on the outside of the elastic tape (4).

3. The continuous airbag pressure monitor capable of automatically adjusting airbag pressure according to claim 2, characterized in that: The other end of the elastic tape (4) is connected to one side of the monitoring box (1), and the other side of the monitoring box (1) is axially connected to a tape threading shaft (7).

4. The continuous airbag pressure monitor capable of automatically adjusting airbag pressure according to claim 3, characterized in that: The monitoring box (1) is connected to the outer side of the elastic tape (4) via a tape-threading shaft (7) provided on one side.

5. The continuous airbag pressure monitor capable of automatically adjusting airbag pressure according to claim 4, characterized in that: The monitoring mechanism (8) comprises a conical sleeve (9), an oxygen tube (10), an air injection tube (11), a piezoresistive sensor (12), a microprocessor (13), a micro electromagnetic inflation valve (14), a piezoelectric ceramic deflation valve (15), and a pressure measuring airbag (16). The oxygen tube (10) is provided on one side of the conical sleeve (9), and the air injection tube (11) is connected to the outside of another group of oxygen tubes (10).

6. The continuous airbag pressure monitor capable of automatically adjusting airbag pressure according to claim 5, characterized in that: The other end of the gas injection tube (11) is connected to a pressure measuring airbag (16), which is arranged inside the conical sleeve (9). The tail end of the gas injection tube (11) is connected to the output end of a piezoelectric ceramic air release valve (15). The piezoelectric ceramic air release valve (15) and the micro electromagnetic inflation valve (14) are installed inside the monitoring box (1), and the microprocessor (13) is installed inside the monitoring box (1).

7. The continuous airbag pressure monitor capable of automatically adjusting airbag pressure according to claim 6, characterized in that: The piezoresistive sensor (12), the micro electromagnetic inflation valve (14), and the piezoelectric ceramic deflation valve (15) are electrically connected to a microprocessor (13), and the piezoresistive sensor (12) is connected to the gas injection pipe (11) via a valve.

8. The continuous airbag pressure monitor capable of automatically adjusting airbag pressure according to claim 7, characterized in that: The oxygen tube (10) is connected to the tail end of the oxygen tube (10) on the other side through a conical sleeve (9) provided through one side.

9. The continuous airbag pressure monitor capable of automatically adjusting airbag pressure according to claim 8, characterized in that: The pressure measuring airbag (16) is connected to the output end of the micro electromagnetic inflation valve (14) via an air injection tube (11) connected at one side.

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