Intubation tube structure with pressure stabilizing air bag

Abstract

A cannula structure with a pressure stabilizing air bag comprises a cannula, a cannula air bag and an inflation structure, the cannula air bag is arranged on the outer side of the cannula and used for fixing the end of the cannula in the trachea of a patient, and the inflation structure is connected with the cannula air bag and used for inflating the cannula air bag. In the inflation process of an inflation structure, the pressure of an air bag in an intubation air bag is difficult to control, the pressure of the air bag in the intubation air bag is likely to be too large or too small, and the use of the intubation structure is not facilitated. The air inflation mechanism comprises an air inflation tube, an air inflation head and a pressure relief head, the air inflation head and the pressure relief head are connected to the air inflation tube, the air inflation head is used for being connected with a needle tube or a component with an air inflation function and inflating the intubation air bag, the pressure relief head is used for conducting pressure relief on the intubation air bag, and the air bag pressure in the intubation air bag is controlled through pressure relief of the pressure relief head. Therefore, the air bag pressure in the intubation air bag is kept within a reasonable range.

Description

Technical Field

[0001] The utility model belongs to the technical field of tracheal intubation, and in particular relates to an intubation structure with a pressure-stabilizing air bag. Background Art

[0002] In clinical practice, ensuring the patency of the airway and maintaining normal gas exchange are the first tasks that must be solved when rescuing critically ill patients such as anesthetized patients, severely traumatized patients, and patients with respiratory and cardiac arrest. It is the basic guarantee for maintaining the normal functions of various organs of the body and, when necessary, further completing the resuscitation of the circulation and central nervous system and saving kidney function. Tracheal intubation technology is often used during general anesthesia surgery or cardiopulmonary resuscitation and the rescue of critically ill patients with respiratory dysfunction. Tracheal intubation refers to the technology of inserting a special catheter into the trachea through the glottis. Emergency tracheal intubation technology has become an important measure in the rescue of cardiopulmonary resuscitation and critically ill patients with respiratory dysfunction. When installing the endotracheal tube, the endotracheal tube is fixed in the patient's trachea by the airbag. During the inflation of the airbag, the airbag pressure value must be kept within the range of 25-30 mmHg. If the airbag pressure value is too high, it may cause compression to the tracheal wall, restricting the blood supply, and causing ischemia and hypoxia of the mucosa, thereby causing local mucosal necrosis and affecting the body's breathing; if the airbag pressure value is too low, the tube may easily move or even leak.

[0003] The invention with application number CN201510589313.X discloses a dial-type micro-pressure indicator, which is composed of a transparent cover, an upper shell, a push plate, a vent pipe joint, a tension spring, a fixed plate, an airbag, a lower shell, a vent pipe, a one-way valve, a three-way connector, a gear with a shaft and a pointer. One end of the one-way valve is connected to the air inlet pipeline, and the other end of the one-way valve is sealed to the three-way connector. The left side of the three-way connector is sealed to one end of the left section of the vent pipe, and the other end of the left section is sealed to the air inlet of the airbag. The left side of the airbag is bonded and fixed to the fixed plate, and the right side of the airbag is bonded and fixed to the rotatable push plate. At present, the airbag pressure in the airbag is often controlled by the above-mentioned pressure indicator on the market, but in the actual inflation process, the airbag needs to be pumped and deflated by a syringe to control the airbag pressure value in the airbag within the normal range, which is inconvenient to operate. Summary of the invention

[0004] In view of the above shortcomings, the technical problem to be solved by the utility model is to provide a cannula structure with a pressure-stabilizing airbag, which controls the airbag pressure in the airbag to a normal value through automatic pressure relief, thereby greatly improving the convenience of airbag pressure control.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A cannula structure with a pressure-stabilizing airbag, the cannula structure comprising a cannula, an cannula airbag and an inflation structure, the inflation structure being connected to the cannula airbag and being used to inflate the cannula airbag, the inflation structure comprising an inflation tube and an inflation head and a pressure relief head connected to the inflation tube, the airbag pressure in the cannula airbag being controlled by pressure relief from the pressure relief head, a locking piece being installed on the pressure relief head to lock the pressure relief head.

[0007] As a preferred solution of the utility model, an abutment column is provided in the locking member, and the abutment column is adapted to the pressure relief head to lock the pressure relief head.

[0008] As a preferred solution of the utility model, a pressure relief valve core is provided in the pressure relief head, and the abutment column is adapted to the pressure relief valve core, and the pressure relief head is locked by the abutment column.

[0009] As a preferred solution of the utility model, a guide column is provided on the pressure relief valve core, and an exhaust groove is provided on the side wall of the guide column, and air flows through the pressure relief valve core through the exhaust groove.

[0010] As a preferred solution of the utility model, the pressure relief head includes a pressure relief sleeve, and two ends of the pressure relief sleeve are respectively provided with a connecting hole connected to the inflation tube and a guide hole connected to the guide column.

[0011] As a preferred solution of the utility model, a pressure relief spring is provided between the pressure relief valve core and the inner wall of the pressure relief sleeve.

[0012] As a preferred solution of the utility model, an inflation valve core is provided in the inflation head, and an ejector pin is provided on the inflation valve core, and the inflation valve core is driven to move by the ejector pin.

[0013] As a preferred solution of the utility model, a baffle is provided in the inflation head, the baffle is adapted to the inflation valve core to prevent the air in the inflation head from flowing back, and the ejector pin extends out of the baffle.

[0014] As a preferred solution of the utility model, an air inlet groove is provided on the side wall of the ejector pin, and air flows into the inflation head through the air inlet groove.

[0015] As a preferred solution of the utility model, the inflation tube is in a Y-shaped structure.

[0016] The utility model has the beneficial effect of relieving the pressure of the intubation airbag through the pressure relief head, so that the airbag pressure in the intubation airbag is maintained within a reasonable range, thereby preventing the tracheal intubation from leaking or causing harm to the patient during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present cannula structure.

[0018] Figure 2It is a cross-sectional view of the cannula structure.

[0019] Figure 3 This is a partial enlarged view of point A.

[0020] Figure 4 This is a partial enlarged view of point B.

[0021] Figure 5 It is a structural diagram of the inflation valve core.

[0022] Figure 6 It is a structural diagram of the pressure relief valve core.

[0023] Figure markings: cannula 1, cannula airbag 2, inflation tube 4, inflation head 5, inflation valve core 5-1, ejector pin 5-2, baffle 5-3, air inlet groove 5-4, inflation sleeve 5-5, self-locking spring 5-6, pressure relief head 6, locking piece 6-1, abutment column 6-2, pressure relief valve core 6-3, guide column 6-4, exhaust groove 6-5, pressure relief sleeve 6-6, connecting hole 6-7, guide hole 6-8, pressure relief spring 6-9. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] A cannula structure with a pressure-stabilizing airbag comprises a cannula 1, a cannula airbag 2 and an inflation structure. The cannula airbag 2 is arranged on the outside of the cannula 1 and is used to fix the end of the cannula 1 in the patient's trachea. The inflation structure is connected to the cannula airbag 2 and is used to inflate the cannula airbag 2.

[0026] During the inflation process of the inflation structure, it is difficult to control the airbag pressure in the intubation airbag 2, which may easily lead to excessive or insufficient airbag pressure in the intubation airbag 2, which is not conducive to the use of the intubation structure. In order to facilitate maintaining the airbag pressure in the intubation airbag 2 within a reasonable range, the inflation mechanism 3 includes an inflation tube 4 and an inflation head 5 and a pressure relief head 6 connected to the inflation tube 4. The inflation head 5 is used to connect with a needle or a component with an inflation function to inflate the intubation airbag 2. The pressure relief head 6 is used to relieve the pressure of the intubation airbag 2. The airbag pressure in the intubation airbag 2 is controlled by the pressure relief of the pressure relief head 6, thereby maintaining the airbag pressure in the intubation airbag 2 within a reasonable range.

[0027] The inflation head 5 includes an inflation sleeve 5-5, one side end of the inflation sleeve 5-5 is fixedly connected to the inflation tube 4, and the inner diameter of the inflation sleeve 5-5 is larger than the inner diameter of the inflation tube 4, so that the connection between the inflation sleeve 5-5 and the inflation tube 4 is stepped, and an inflation valve core 5-1 is slidably installed in the inflation sleeve 5-5, and a baffle 5-3 is provided in the middle of the inflation sleeve 5-5. A self-locking spring 5-6 is provided between the inflation valve core 5-1 and the inflation tube 4. The self-locking spring 5-6 is used to abut the inflation valve core 5-1 against the baffle 5-3 to prevent the air in the inflation tube 4 from flowing out from the baffle 5-3, thereby preventing the air in the inflation head 5 from flowing back.

[0028] In order to improve the stability of the air in the inflation head 5 by the cooperation between the inflation valve core 5-1 and the baffle 5-3, the inflation valve core 5-1 has a conical structure on the side facing the baffle 5-3. The conical structure cooperates with the through hole on the baffle 5-3 to ensure that the air in the inflation head 5 cannot flow out to the side of the baffle 5-3.

[0029] In order to improve the convenience of inflation, a push pin 5-2 is provided on the inflation valve core 5-1, and the push pin 5-2 is arranged outside the baffle 5-3, so that the inflation valve core 5-1 can be pushed after the needle tube or the component with inflation function abuts against the push pin 5-2, thereby separating the inflation valve core 5-1 from the baffle 5-3, thereby facilitating the air to flow into the inflation head 5 through the through hole on the baffle 5-3.

[0030] An air inlet groove 5-4 is provided on the side wall of the ejector pin 5-2, so that the cross section of the ejector pin 5-2 is cross-shaped, preventing the ejector pin 5-2 from blocking the air outlet of the needle tube or the component with the inflation function, thereby further improving the convenience of inflation.

[0031] As a preferred embodiment, the end of the ejector pin 5-2 is located inside the inflation sleeve 5-5, so as to prevent the ejector pin 5-2 from being accidentally touched and causing pressure relief in the inflation head 5, thereby ensuring the stability of the device.

[0032] The pressure relief head 6 includes a pressure relief sleeve 6-6 and a pressure relief valve core 6-3. The pressure relief valve core 6-3 is slidably installed in the pressure relief sleeve 6-6. One end of the pressure relief sleeve 6-6 is fixedly connected to the inflation tube 4, and the inner diameter of the pressure relief sleeve 6-6 is larger than the inner diameter of the inflation tube 4, so that the connection between the pressure relief sleeve 6-6 and the inflation tube 4 is stepped. The pressure relief head 6 is connected to the inflation tube 4 through a connecting hole 6-7. A guide plate is provided in the middle of the pressure relief sleeve 6-6, and a guide hole 6-8 is formed on the guide plate. The guide hole 6-8 provides guidance for the movement of the pressure relief valve core 6-3.

[0033] A guide post 6-4 is provided on the pressure relief valve core 6-3, and the guide post 6-4 is slidably installed in the guide hole 6-8. A pressure relief spring 6-9 is sleeved on the outer side of the guide post 6-4, and the pressure relief spring 6-9 is respectively abutted against the pressure relief valve core 6-3 and the guide plate, and is used to abut the pressure relief valve core 6-3 against the connecting hole 6-7. An exhaust groove 6-5 is provided on the side wall of the guide post 6-4. When the airbag pressure in the intubation airbag 2 is too large, the pressure relief valve core 6-3 moves, so that the air is discharged to the outside of the pressure relief head 6 through the connecting hole 6-7, the exhaust groove 6-5, and the guide hole 6-8 in sequence, so as to realize the pressure relief of the intubation airbag 2. The pressure relief pressure of the pressure relief head 6 is controlled by selecting a pressure relief spring 6-9 with a suitable length and elastic coefficient, so as to control the pressure in the intubation airbag 2 through the pressure relief head 6.

[0034] A locking piece 6-1 is installed at the end of the pressure relief head 6. The locking piece 6-1 is covered on the end of the pressure relief head 6 by threads or overfitting. An abutment column 6-2 is provided in the locking piece 6-1. When the locking piece 6-1 is covered, the abutment column 6-2 abuts against the guide column 6-4, so that the pressure relief valve core 6-3 abuts against the connecting hole 6-7, thereby locking the pressure relief head 6 and achieving the closure of the pressure relief head 6.

[0035] The inflation tube 4 is in a Y-shaped structure, and the intubation airbag 2, the inflation head 5, and the pressure relief head 6 are respectively connected to three ports of the inflation tube 4.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0037] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A cannula structure with a pressure-stabilizing airbag, characterized in that: The intubation structure comprises an intubation tube (1), an intubation airbag (2) and an inflation structure, wherein the inflation structure is connected to the intubation airbag (2) and is used to inflate the intubation airbag (2), wherein the inflation structure comprises an inflation tube (4), an inflation head (5) and a pressure relief head (6) connected to the inflation tube (4), wherein the airbag pressure in the intubation airbag (2) is controlled by pressure relief through the pressure relief head (6), and a locking member (6-1) is installed on the pressure relief head (6) to lock the pressure relief head (6).

2. The intubation structure with a pressure-stabilizing airbag according to claim 1, characterized in that: An abutment column (6-2) is provided inside the locking member (6-1), and the abutment column (6-2) is adapted to the pressure relief head (6) to lock the pressure relief head (6).

3. The intubation structure with a pressure-stabilizing airbag according to claim 2, characterized in that: The pressure relief head (6) is provided with a pressure relief valve core (6-3), the abutment column (6-2) is adapted to the pressure relief valve core (6-3), and the pressure relief head is locked by the abutment column (6-2).

4. The intubation structure with a pressure-stabilizing airbag according to claim 3, characterized in that: The pressure relief valve core (6-3) is provided with a guide column (6-4), and a side wall of the guide column (6-4) is provided with an exhaust groove (6-5), and air flows through the pressure relief valve core (6-3) through the exhaust groove (6-5).

5. The intubation structure with a pressure-stabilizing airbag according to claim 4, characterized in that: The pressure relief head (6) comprises a pressure relief sleeve (6-6), and two ends of the pressure relief sleeve (6-6) are respectively provided with a connection hole (6-7) connected to the inflation tube (4) and a guide hole (6-8) connected to the guide column (6-4).

6. The intubation structure with a pressure-stabilizing airbag according to claim 5, characterized in that: A pressure relief spring (6-9) is provided between the pressure relief valve core (6-3) and the inner wall of the pressure relief sleeve (6-6).

7. The intubation structure with a pressure-stabilizing airbag according to claim 1, characterized in that: An inflation valve core (5-1) is provided in the inflation head (5), and a thimble (5-2) is provided on the inflation valve core (5-1), and the inflation valve core (5-1) is driven to move by the thimble (5-2).

8. The intubation structure with a pressure-stabilizing airbag according to claim 7, characterized in that: A baffle (5-3) is provided inside the inflation head (5), and the baffle (5-3) is adapted to the inflation valve core (5-1) to prevent the backflow of air inside the inflation head (5), and the ejector pin (5-2) extends out of the baffle (5-3).

9. The intubation structure with a pressure-stabilizing airbag according to claim 7, characterized in that: An air inlet groove (5-4) is provided on the side wall of the ejector pin (5-2), and air flows into the inflation head (5) through the air inlet groove (5-4).

10. The intubation structure with a pressure-stabilizing airbag according to claim 1, characterized in that: The inflation tube (4) has a Y-shaped structure.

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