Continuous pressure measuring type tracheotomy cannula

Abstract

The invention discloses a continuous pressure measuring type tracheotomy cannula which comprises an outer cannula body, an air bag arranged on the outer cannula body and an inner cannula body connected to the outer cannula body, and a miniature thin film pressure sensor is arranged in the air bag and tightly attached to the inner wall of the air bag. A wire conduit of the miniature thin film pressure sensor extends out of the air bag to be connected with a pressure displayer, a breather pipe of the air bag extends out of the air bag, and an air bag external connector is arranged on the breather pipe. According to the tracheotomy cannula, integration of the cannula and pressure measurement is achieved, all-directional continuous pressure measurement display of the pressure of the air bag can be achieved, the monitoring accuracy of the pressure of the air bag is guaranteed, the filling degree of the air bag can be timely and accurately adjusted according to continuous real-time pressure measurement values, and the stable use effect of the tracheotomy cannula is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of medical equipment and relates to a tracheotomy cannula, in particular to a continuous pressure measurement type tracheotomy cannula. Background Art

[0002] Tracheotomy has been widely used as a rescue method in clinical practice. When the condition of patients with tracheotomy is serious and the swallowing function has not recovered, most of them will choose plastic tracheotomy tubes, because they can be directly connected to the ventilator, and they are equipped with air bags and subglottic drainage. The filled air bags can effectively prevent oral secretions from flowing into the trachea and even the lungs, which can effectively reduce the occurrence of VAP (ventilator-associated pneumonia). However, the pressure of the air bag needs to be monitored regularly to ensure that the pressure is within the normal range, because too high or too low air bag pressure will cause adverse effects.

[0003] The silicone tracheotomy tube currently used in clinical practice is equipped with an air bag. The air bag can play two roles: one is to prevent blood from flowing into the airway in the early stage of tracheotomy, and the other is to prevent oral secretions from flowing into the airway when the swallowing function has not fully recovered in the later stage. We use an air bag pressure test table to monitor the pressure of the air bag. The air bag pressure is monitored regularly by an external pressure measuring device. However, the pressure is different under different body positions with the same volume. This does not allow a comprehensive observation of the air bag pressure. The air bag pressure is not completely equal to the airway pressure, and the pressure is different for each patient with different height, weight and airway diameter. Therefore, the pressure data obtained by the existing tracheotomy tube air bag pressure monitoring method cannot accurately represent the airway pressure, which will lead to inaccurate adjustment of the air bag filling degree. Overfilling can cause airway damage, and insufficient air bag inflation can cause aspiration or increase the probability of VAP (ventilator-associated pneumonia). Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, a continuous pressure measurement tracheotomy tube is provided, which realizes the integration of the tube and the pressure measurement, and can realize all-round continuous pressure measurement and display of the airbag pressure, which not only ensures the monitoring accuracy of the airbag pressure, but also can timely and accurately adjust the filling degree of the airbag according to the continuous real-time pressure measurement value, thereby ensuring the stable use effect of the tracheotomy tube.

[0005] Technical solution: To achieve the above-mentioned purpose, the present invention provides a continuous pressure measurement tracheotomy tube, comprising an outer tube, an air bag arranged on the outer tube, and an inner tube connected to the outer tube, wherein a micro-thin film pressure sensor is arranged in the air bag, and the micro-thin film pressure sensor is tightly attached to the inner wall of the air bag, the wire tube of the micro-thin film pressure sensor extends out of the air bag and is connected to a pressure display, the ventilation tube of the air bag extends out of the air bag, and the ventilation tube is provided with an air bag external interface.

[0006] Furthermore, a snap-fit ​​fixing piece is provided on the inner sleeve, and the snap-fit ​​fixing piece is used to fix the inner sleeve.

[0007] Furthermore, a subglottic drainage tube is provided on the airbag.

[0008] Furthermore, the subglottic drainage tube is provided with a drainage tube external interface.

[0009] Furthermore, the wire tube and the ventilation tube are both fitted and fixed on the outer sleeve.

[0010] Beneficial effects: Compared with the prior art, the present invention closely fits the micro-thin film pressure sensor on the inner wall of the airbag, and replaces the existing method of regularly monitoring the airbag pressure with an external pressure measuring device by internal pressure measurement. This innovative structural design does not affect the normal use of the airbag. The micro-thin film pressure sensor can sense the all-round pressure conditions inside the airbag, and can realize the real-time digital display of the pressure value through the conversion of the pressure display, thereby realizing continuous pressure measurement of the airbag pressure, which not only ensures the accuracy of airbag pressure monitoring, but also can timely and accurately adjust the filling degree of the airbag according to the continuous real-time pressure measurement value, thereby ensuring the stable use effect of the tracheotomy tube, better protecting the patient's airway mucosa, reducing secondary injuries, and saving medical costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 Schematic diagram of the structural connection between the airbag and the micro-thin film pressure sensor. DETAILED DESCRIPTION

[0013] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0014] like Figure 1 and Figure 2As shown, the present invention provides a continuous pressure measurement type tracheotomy cannula, comprising an outer cannula 1, an air bag 3 arranged on the outer cannula 1, and an inner cannula 2 connected to the outer cannula 1, a micro film pressure sensor 9 is arranged in the air bag 3, the micro film pressure sensor 9 is tightly fitted on the inner wall of the air bag 3, a wire tube 5 of the micro film pressure sensor 9 extends out of the air bag 3 and is connected to a pressure display 6, a ventilation tube 4 of the air bag 3 extends out of the air bag 3, an air bag external interface 41 is arranged on the ventilation tube 4, a buckle fixing part 8 is arranged on the inner cannula 2, the buckle fixing part 8 is used to fix the inner cannula 2, and a subglottic drainage tube 7 is arranged on the air bag 3 The subglottic drainage tube 7 is provided with a drainage tube outer interface 71, and the subglottic drainage tube 7 is connected to the drainage device through the drainage tube outer interface 71. The wire tube 5 and the ventilation tube 4 are both fitted and fixed on the outer sleeve 1. In this embodiment, the pressure display 6 adopts the RFP pressure testing system RFP-xw01, which can convert the measured pressure into a specific value through the acquisition circuit and data processing. The inner sleeve 2 is made of disposable medical non-toxic PVC material, which can be regularly replaced according to the relevant regulations on hospital infection and the relevant requirements for disinfection and isolation, and can also be replaced at any time according to the patient's infection degree and sputum viscosity, so as to better ensure the patency of the respiratory tract.

[0015] In this embodiment, the above-mentioned continuous pressure measurement type tracheotomy tube is used as an example, and the specific operation process is as follows:

[0016] During the use of the tracheotomy tube, the micro-thin film pressure sensor 9 can sense the all-round overall pressure value in the airbag 3, and the pressure display 6 displays these pressure values ​​in real time through charts and data, so that the operator can obtain the overall real-time pressure situation in the airbag 3 and the pressure situation over a period of time through the pressure display 6. The operator adjusts the filling degree of the airbag 3 with reference to these pressure conditions, so that the filling degree of the airbag 3 corresponds to the real-time situation of the patient, which not only ensures the accuracy of airbag pressure monitoring, but also can timely and accurately adjust the filling degree of the airbag 3 according to the continuous real-time pressure measurement values, thereby ensuring the stable use effect of the tracheotomy tube, better protecting the patient's airway mucosa, reducing secondary injuries, and saving medical costs.

Claims

1. A continuous pressure measurement tracheotomy tube, comprising an outer tube, an air bag arranged on the outer tube, and an inner tube connected to the outer tube, characterized in that: A micro-thin film pressure sensor is arranged inside the airbag, and the micro-thin film pressure sensor is tightly attached to the inner wall of the airbag. The wire tube of the micro-thin film pressure sensor extends out of the airbag and is connected to a pressure display. The ventilation tube of the airbag extends out of the airbag, and an airbag external interface is arranged on the ventilation tube.

2. A continuous pressure measuring tracheotomy tube according to claim 1, characterized in that: The inner sleeve is provided with a buckle fixing piece, and the buckle fixing piece is used to fix the inner sleeve.

3. A continuous pressure measuring tracheotomy tube according to claim 1, characterized in that: The air bag is provided with a subglottic drainage tube.

4. A continuous pressure measuring tracheotomy tube according to claim 3, characterized in that: The subglottic drainage tube is provided with a drainage tube external interface.

5. A continuous pressure measurement tracheotomy tube according to claim 1, characterized in that: The wire tube and the vent tube are both fitted and fixed on the outer sleeve.

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