Airway opening pressure measuring device

Abstract

The utility model discloses an airway opening pressure measuring device which comprises a breathing machine communicating pipe, a three-way pipe, a pressure measuring end pipe and an artificial airway fixator, the breathing machine communicating pipe is communicated with the pressure measuring end pipe through the three-way pipe, and the third opening end, different from the breathing machine communicating pipe and the pressure measuring end pipe, of the three-way pipe is a pressure zero calibration opening. The artificial airway fixator is clamped with an artificial airway outer opening and the pressure measuring end tube, and one end, deviating from the three-way tube, of the pressure measuring end tube extends into the artificial airway of the patient for pressure measurement; tracheotomy model number scales and trachea cannula model number scales are arranged on the pressure measuring end tube, the tracheotomy model number scales correspond to the tip opening in the lower trachea of the model number, and the trachea cannula model number scales correspond to the tip opening in the cannula of the model number. According to the utility model, the respiratory effort is measured by utilizing the synchronism and correlation of the fluctuation of the tip pressure in the artificial airway and the fluctuation of the pressure in the esophagus, the design and the operation are simple, the product consumable cost is low, the maintenance and the cleaning are simple, the labor cost is low, and the popularization is convenient.

Description

Technical Field

[0001] This utility model relates to an airway opening pressure measuring device, belonging to the field of medical device technology. Background Technology

[0002] In 1949, Buytendijk first demonstrated that intraesophageal pressure (Pes) could be used in place of intrathoracic pressure (Ppl). In 1952, Dornhorst and Leathart proved that Ppl and Pes changed similarly and were helpful in understanding respiratory mechanics. The variability in intraesophageal pressure (ΔPes) reflects the average PL during spontaneous breathing and also confirms that Pes can estimate the magnitude of inspiratory effort.

[0003] Currently, the magnitude of a patient's respiratory effort is measured by placing a gastric tube with a cuff in the esophagus to obtain pressure values, thereby estimating changes in intrathoracic pressure. The disadvantages of this method are that the patient must have this cuffed gastric tube inserted for monitoring, which is cumbersome, costly, difficult to maintain and clean, and the transpulmonary pressure can only be calculated using formulas while the ventilator is running.

[0004] With our refined monitoring of respiratory mechanics, we have discovered that during weaning trials or formal weaning in intubated and tracheostomized patients, monitoring the pressure at the tip of the artificial airway can indicate the patient's respiratory effort. In clinical practice, we have found a strong synchronicity and correlation between fluctuations in the pressure at the tip of the artificial airway and fluctuations in esophageal pressure. Therefore, we hope to use such devices to directly monitor the pressure at the tip of the airway in intubated or tracheostomized patients, thereby reflecting the magnitude of respiratory drive in these patients during weaning and providing valuable clinical guidance. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing respiratory effort drive magnitude monitoring can only be done by inserting a gastric tube with an air bag, which is cumbersome to operate, costly, difficult to maintain and clean, and can only be calculated by formula conversion when the ventilator is running.

[0006] To address the aforementioned technical problems, this invention provides an airway opening pressure measuring device that can be used to directly measure the pressure at the opening of an artificial airway (endotracheal intubation and tracheostomy), providing clinical reference values ​​during the patient's inhalation and exhalation phases.

[0007] To achieve the above-mentioned technical objectives and effects, this application provides the following technical solution:

[0008] An airway opening pressure measuring device includes a ventilator connecting tube, a three-way valve, a pressure measuring end tube, and an artificial airway fixator. The ventilator connecting tube and the pressure measuring end tube are connected through the three-way valve. The third port of the three-way valve, which is different from the ventilator connecting tube and the pressure measuring end tube, is a pressure zeroing port. The three-way valve is equipped with a three-way switch knob. The artificial airway fixator is snapped into the external opening of the artificial airway and the pressure measuring end tube. The end of the pressure measuring end tube opposite to the three-way valve extends into the patient's artificial airway to measure the pressure.

[0009] Preferably, the ventilator connecting tube is connected to the inlet of the three-way tube, the pressure measuring end tube is connected to the outlet of the three-way tube, and the pressure zeroing port is the middle interface of the three-way tube.

[0010] Preferably, the pressure measuring tube is a pressure measuring tube, and the outer wall of the pressure measuring tube is provided with two layers of scale lines, including the tracheotomy model number scale and the endotracheal tube model number scale.

[0011] Furthermore, the tracheotomy model number scale corresponds to the tip of the trachea inside that model, and the endotracheal tube model number scale corresponds to the tip of the endotracheal tube inside that model.

[0012] Furthermore, the artificial airway fixation device includes a first snap-fit ​​part, a second snap-fit ​​part, and a connecting part. The first snap-fit ​​part and the second snap-fit ​​part are disposed at both ends of the connecting part. The first snap-fit ​​part is snap-fitted and adapted to the side wall of the artificial airway opening, and the second snap-fit ​​part is snapped onto the scale line on the outer wall of the pressure measuring end tube.

[0013] Furthermore, both the first and second snap-fit ​​parts are C-shaped snap-fit ​​structures capable of elastic deformation.

[0014] The airway opening pressure measuring device provided by this utility model has the following advantages:

[0015] 1. The airway opening pressure measuring device of this utility model can be used to connect the patient monitoring end of the device to the ventilator pressure measuring end when the patient is weaned off the ventilator, whether the patient is intubated or has undergone tracheotomy. The first locking part is locked onto different types of artificial airways, and the pressure measuring tube is inserted into the patient's artificial airway at the corresponding scale and locked onto the second locking part. The ventilator can then monitor and record the pressure.

[0016] 2. The airway opening pressure measuring device of this utility model is simple to design and operate, requires no complicated procedures, has low material and consumable costs, can be achieved with ordinary pressure measuring tubes, is relatively simple to maintain and clean, has low labor costs, and is easy to promote. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of an airway opening pressure measuring device provided in an embodiment of this utility model;

[0018] Figure 2 A schematic diagram illustrating the connection between an airway opening pressure measuring device and an artificial airway, provided for an embodiment of this utility model;

[0019] In the picture:

[0020] 1-Ventilator connecting tube; 2-Three-way tube; 21-Three-way switch knob; 22-Pressure zeroing port; 3-Pressure measuring end tube; 4-Artificial airway fixator; 41-First locking part; 42-Second locking part; 43-Connecting part; 5-Tracheostomy type number scale; 6-Tracheal intubation type number scale; 7-Artificial airway. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Reference Figure 1 and Figure 2 An airway opening pressure measuring device includes a ventilator connecting tube 1, a three-way tube 2, a pressure measuring end tube 3, and an artificial airway fixation device 4. One end of the ventilator connecting tube 1 is connected to the ventilator pressure monitoring end, and the other end of the ventilator connecting tube 1 is connected to the pressure measuring end tube 3 through the three-way tube 2. The other end of the pressure measuring end tube 3 extends into the patient's artificial airway 7 to measure the pressure. The third port of the three-way tube 2, which is different from the ventilator connecting tube 1 and the pressure measuring end tube 3, is a pressure zeroing port 22, used for normal pressure calibration. A three-way switch knob 21 is installed on the three-way tube 2 to control the flow at each port of the three-way tube 2. The artificial airway fixation device 4 is snapped to fix the external opening of the artificial airway 7 and the pressure measuring end tube 3 to maintain the stability of the structure during testing. In this embodiment, the pressure measuring end tube 3 can be a common pressure measuring tube to achieve the measurement.

[0023] Furthermore, the ventilator connecting tube 1 is connected to the inlet of the three-way tube 2, the pressure measuring end tube 3 is connected to the outlet of the three-way tube 2, and the pressure zeroing port 22 is the intermediate interface of the three-way tube 2.

[0024] Reference Figure 1 and Figure 2 The outer wall of the pressure measuring tube 3 is provided with two layers of scale lines, including the tracheotomy model number scale 5 and the endotracheal tube model number scale 6. The tracheotomy model number scale 5 corresponds to the tip of the trachea inside the tube of that model, and the endotracheal tube model number scale 6 corresponds to the tip of the tube inside the tube of that model.

[0025] Reference Figure 1 and Figure 2The artificial airway fixation device 4 includes a first snap-fit ​​part 41, a second snap-fit ​​part 42, and a connecting part 43. The first snap-fit ​​part 41 and the second snap-fit ​​part 42 are respectively disposed at both ends of the connecting part 43. The first snap-fit ​​part 41 is snap-fitted and adapted to the outer side wall of the artificial airway 7. The second snap-fit ​​part 42 is snapped at the scale line on the outer wall of the pressure measuring end tube 3. Specifically, the first snap-fit ​​part 41 and the second snap-fit ​​part 42 are integrally formed with the connecting part 43. The first snap-fit ​​part 41 and the second snap-fit ​​part 42 are both C-shaped snap-fit ​​structural parts that can undergo elastic deformation, including but not limited to snap-fit ​​structural parts made of polyurethane, polypropylene, and nylon.

[0026] The working principle of the airway opening pressure measuring device of this utility model is as follows:

[0027] Based on the strong synchronicity and correlation between the pressure fluctuations at the tip of the artificial airway 7 and the pressure fluctuations in the esophagus, measurements are taken at the tip of the endotracheal tube and tracheostomy tube. The pressure is transmitted to the ventilator pressure terminal through the airflow pressure during the patient's inhalation and exhalation for identification. When the patient is weaned from the ventilator, whether via intubation or tracheostomy, the patient monitoring end of this device is connected to the ventilator pressure measurement end through the ventilator connecting tube 1. The first locking part 41 of the artificial airway fixation device 4 is then locked onto the artificial airway 7. The corresponding scale on the pressure measuring end tube 3 is then extended into the patient's artificial airway 7, and the second locking part 42 of the artificial airway fixation device 4 is locked onto the corresponding scale line on the pressure measuring end tube 3. Monitoring and recording are then performed on the ventilator.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. An airway opening pressure measurement device, characterized in that, The application relates to a breathing machine communication pipe (1), a three-way pipe (2), a pressure measuring end pipe (3) and an artificial airway fixer (4), wherein the breathing machine communication pipe (1) is communicated with the pressure measuring end pipe (3) through the three-way pipe (2), the third port end of the three-way pipe (2) is a pressure zero calibration port (22) which is different from the breathing machine communication pipe (1) and the pressure measuring end pipe (3), the three-way pipe (2) is provided with a three-way switch knob (21), the artificial airway fixer (4) is connected with an outer port of an artificial airway (7) and the pressure measuring end pipe (3), and one end of the pressure measuring end pipe (3) which is away from the three-way pipe (2) is inserted into the artificial airway (7) of a patient to measure pressure.

2. A device for measuring pressure in an airway opening as claimed in claim 1, wherein The breathing machine communication pipe (1) is communicated with the inlet of the three-way pipe (2), the pressure measuring end pipe (3) is communicated with the outlet of the three-way pipe (2), and the pressure zero calibration port (22) is the middle interface of the three-way pipe (2).

3. A device for measuring pressure in an airway opening as claimed in claim 1, wherein The pressure measuring end pipe (3) is a pressure measuring pipe, and two layers of scale lines are arranged on the outer wall of the pressure measuring end pipe (3), wherein the two layers of scale lines comprise a tracheotomy type number scale (5) and a tracheal intubation type number scale (6).

4. A device according to claim 3, wherein the pressure sensing means is a pressure sensor. The tracheotomy type number scale (5) corresponds to the inner sharp end port of the tracheotomy type, and the tracheal intubation type number scale (6) corresponds to the inner sharp end port of the tracheal intubation type.

5. A device according to claim 3, wherein the pressure sensing means is a pressure sensor. The artificial airway fixer (4) comprises a first clamping part (41), a second clamping part (42) and a connecting part (43), the first clamping part (41) and the second clamping part (42) are arranged at two ends of the connecting part (43), the first clamping part (41) is clamped and matched with the sidewall of the outer port of the artificial airway (7), and the second clamping part (42) is arranged on the scale line on the outer wall of the pressure measuring end pipe (3).

6. A device according to claim 5, wherein the pressure sensing means is a pressure sensor. The first clamping part (41) and the second clamping part (42) are both C-shaped clamping structural members which can be elastically deformed.

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