Anti-slip trachea cannula connecting device and connecting method

Abstract

The invention relates to the technical field of trachea cannulas, in particular to an anti-slip trachea cannula connecting device and a connecting method, an artificial nose and a connecting piece are limited through the connecting device, and a connecting device main body is fixed on the artificial nose, so that the connecting piece connected with the trachea cannula is prevented from being separated from the artificial nose; opening and closing of the connecting device are facilitated through the rotating structure, control operation of an operator is facilitated, and the practicability of the device is improved; comprising a connecting device and a rotating structure, and the rotating structure is arranged on the connecting device; the limiting flange and the bottom bearing plate form a limiting groove to limit wing plates on the two sides of the bottom of the connecting piece. A lateral limiting groove is formed in the side vertical face of the front end of the first buckle piece and matched with the left side end of the covering protruding plate, and leftward rotation of the covering protruding plate is limited. And when the first buckle piece and the second buckle piece are rotationally closed, the lateral limiting groove can prevent the covering convex plate from excessively rotating to cause deformation of the connecting device, so that the stability during mounting is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of endotracheal intubation, and in particular to an anti-slip endotracheal intubation connection device and a connection method. Background Art

[0002] Establishing an artificial breathing channel through endotracheal intubation under general anesthesia is a mature and most commonly used technical means; endotracheal intubation is an important surgical instrument for establishing an artificial breathing circuit during endotracheal intubation surgery, and is often used as an essential medical device in emergency treatment, surgery requiring general anesthesia, and the rescue of critically ill patients; after the endotracheal intubation is inserted into the trachea and fixed with a balloon, one end of the artificial nose is connected to the ventilator and anesthesia machine through a connector, and the other end of the artificial nose is connected to the ventilator and anesthesia machine to provide oxygen and anesthetics to the patient; however, the existing connectors and artificial noses are connected by friction, The connector is connected to the artificial nose end for a quasi-cylindrical tube, that is, the inner diameter is cylindrical and the outer diameter has a certain taper. The connecting end of the artificial nose and the connector is a cylindrical tube. When the connector and the artificial nose connecting end are pressed into the deepest part, the connection is very tight. The connector is connected to the endotracheal tube end using a similar structure, and the connection between the connector and the endotracheal tube is very tight. However, during endotracheal intubation, a suction tube is usually inserted at intervals to suction and clean the sputum produced in the patient's throat. At this time, it is usually necessary to separate the connector from the artificial nose, and then Because the existing connection is too tight, it is necessary to use a lot of force to rotate the connector and the artificial nose. If you are not careful, the endotracheal tube may be pulled out of the trachea due to unstable force control. The air bag on the tube will damage the patient's tracheal mucosa during the process of pulling it out of the trachea. The need for re-intubation brings a lot of work and difficulty to the medical staff, causing multiple physical and mental injuries to the patient and his family. Therefore, in order to facilitate the separation of the connector and the artificial nose when suctioning the patient, the medical staff usually do not insert the connector to the deepest point when installing it into the artificial nose connection end. This is convenient to use, but the connection is not so tight. The heat generated by the patient's breathing will make the connector more slippery, especially when the patient turns over or other movements pull the endotracheal tube, which can easily cause the connector of the endotracheal tube to become detached from the artificial nose. This may cause the patient to suffer from hypoxia, and the patient's safety cannot be guaranteed. The artificial nose body, connector and endotracheal tube are existing technologies and are necessary connectors during the intubation process. They are universal and mature products that can be directly purchased and used on the market. The corresponding instructions for connection are attached. Figure 8The upper part of the connector is inserted into the lower part of the artificial nose body, and the lower part of the connector is inserted into the upper port of the endotracheal tube. Since operations such as suctioning are required during use, the artificial nose body and the upper connecting part of the connector need to be separated and connected. The connection between the connector and the endotracheal tube is a tight and stable connection, and usually there will be no problems. A group of wing plates are respectively provided on the front and back of the lower side of the connector. The provided wing plates facilitate the operator to complete the connection and separation of the artificial nose body and the connector.

[0003] The existing endotracheal tube is easily separated from the artificial nose by the connector during use, posing a safety hazard. During the separation process, if the connector is not carefully separated from the artificial nose, the endotracheal tube may be pulled out of the trachea due to unstable force control. The air-filled balloon on the tube may damage the patient's tracheal mucosa during the process of being pulled out of the trachea. In addition, the need for re-intubation brings a lot of work and difficulty to the medical staff, causing multiple physical and mental injuries to the patient and their family.

[0004] In order to overcome the above-mentioned problems that occur during the use of endotracheal intubation, the present invention provides an anti-slip endotracheal intubation connector and a connection method. By fixing and limiting the connector of the artificial nose and the endotracheal intubation, it is convenient to separate and connect the endotracheal intubation connector and the artificial nose, and ensure that the endotracheal intubation is connected to the artificial nose to prevent the endotracheal intubation connector and the connecting end of the artificial nose from falling off during use. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an anti-slip endotracheal tube connection device and connection method that limits the artificial nose and the connection piece through a connection device and fixes the device body on the artificial nose to prevent the connection piece from detaching from the artificial nose. The opening and closing of the connection device is facilitated by a rotating structure, which is convenient for the operator to control and operate, thereby improving the practicality of the device.

[0006] The cam is secured to the cam face of the second clamping member and is adapted to engage the first and second clamping members when the cam face is engaged. The bolt can extend through the internal threaded hole to the interior of the first clip and the second clip. The bottom of the first clip and the second clip are respectively provided with a bottom support plate, and the middle of the two groups of bottom support plates are provided with a through hole, and the hole structure formed by the first clip and the second clip is adapted to the shape of the artificial nose connecting part at the lower end of the artificial nose body. The inner diameter of the hole structure at the minimum inner diameter is larger than the outer diameter of the artificial nose connecting part and the narrow side width of the connecting part. The first clip and the second clip are respectively provided with wing plate grooves at the front and back to match the wing plate structures on both sides of the bottom of the connecting part.

[0007] The artificial nose and the connecting piece are limited by the connecting device, and the main body of the device is fixed on the artificial nose to prevent the connecting piece from detaching from the artificial nose. The rotating structure facilitates the opening and closing of the connecting device, which is convenient for the operator to control and operate, thereby improving the practicality of the device.

[0008] The first fastener and the second fastener cover the artificial nose connecting part and the main body of the connecting part, and then the fastening bolt is rotated to pass through the first fastener and the internal threaded hole on the covering convex plate and press on the side of the connecting part at the lower end of the artificial nose main body, thereby fixing the position of the first fastener and the second fastener main body, and limiting the lower part of the connecting part by the wing plate groove, the limiting flange and the bottom support plate to prevent the connecting part from being separated from the artificial nose main body. The lower part of the connecting part is connected to the tracheal cannula and passes through the through hole, which is convenient for quickly connecting, fixing and separating the tracheal cannula and the artificial nose, and is highly practical.

[0009] Preferably, an extended cylinder seat is further included, and an extended cylinder seat is provided at the front part of the internal threaded hole on the covering convex plate; the axial distance of the internal threaded hole on the covering convex plate is extended by extending the cylinder seat, so that when the first fastener and the second fastener need to be loosened, the fastening bolt is not easy to fall directly from the covering convex plate after being disengaged from the internal threaded hole on the first fastener, and is still connected to the internal threaded hole on the covering convex plate, which is convenient for subsequent secondary installation and tightening, thereby improving the practicality of the device.

[0010] Preferably, it also includes a limiting flange, and a limiting flange is provided on the lower part of the inner side surface of the first clip and the second clip, and the limiting flange can be segmented or annularly closed along the inner side surface; the limiting flange and the bottom support plate form a limiting groove to limit the wing plates on both sides of the bottom of the connecting member; the limiting groove is formed by the limiting flange and the bottom support plate to limit the position of the wing plates on both sides of the bottom of the connecting member in the first clip and the second clip, so as to prevent the connection between the connecting member and the artificial nose body during use, and make it easier for the connecting member to be fixed in the hole structure formed by the first clip and the second clip after being connected to the artificial nose, and the installation efficiency is high.

[0011] Preferably, the rotating structure includes a rotating connecting seat, a hemispherical protrusion, a hemispherical groove and a horizontally mounted shallow slide groove, and two groups of rotating connecting seats are respectively provided at the upper and lower rear ends of the first clip and the second clip, and the two groups of rotating connecting seats on the second clip are located between the upper and lower groups of rotating connecting seats on the first clip, and the upper end surface of the upper rotating connecting seat of the second clip and the lower end surface of the lower rotating connecting seat are both provided with hemispherical protrusions, and the two groups of rotating connecting seats of the first clip are respectively provided with hemispherical grooves on the opposite surfaces of the two groups of rotating connecting seats of the first clip, and horizontally mounted shallow slide grooves are provided on the side surfaces of the hemispherical grooves; the first clip and the second clip are connected by the hemispherical protrusions and the hemispherical grooves provided on the rotating connecting seats of the first clip and the second clip, and the first clip and the second clip bodies can be opened and closed and rotated, which is convenient for the installation and disassembly of the device body, and the horizontally mounted shallow slide grooves provided on the side surfaces of the hemispherical grooves facilitate the hemispherical protrusions to slide into the hemispherical grooves during assembly.

[0012] Preferably, the first fastener and the second fastener body are made of transparent material; by making the first fastener and the second fastener body adopt transparent material, it is convenient for the operator to adjust and observe the position of the first fastener and the second fastener fixed on the artificial nose body during the fixing process, and it is convenient to observe whether the connecting part is fixed in the limiting groove formed by the limiting flange and the bottom support plate, thereby improving the practicality of the device.

[0013] Preferably, it also includes a paddle structure, and a group of paddle structures are provided on the outer front sides of the first fastener and the second fastener; the paddle structure provided on the first fastener and the second fastener makes it convenient for the operator to paddle the first fastener and the second fastener to rotate, separate and dock the two, thereby reducing the difficulty of operation and improving the practicality of the device.

[0014] Preferably, the front side elevation of the first latch is further provided with a lateral limit slot, which engages with the left end of the cover protrusion and limits the cover protrusion from rotating to the left. When the first and second latches are rotated closed, the lateral limit slot prevents the cover protrusion from excessive rotation and causing deformation of the connecting device, thereby improving stability during installation.

[0015] A connection method based on an anti-slip endotracheal tube connection device is used to limit and fix the connection between an artificial nose body and a connector, comprising the following steps: (1) After the tracheal tube is connected to the artificial nose body through the connecting piece, the tracheal tube is passed through the through hole, the first clip and the second clip are opened and closed and fitted on the main connecting part of the artificial nose, and then the lower body of the connecting piece and the wing plate part are matched with the wing plate groove structure and placed into the lower part of the hole structure enclosed by the first clip and the second clip, so that the wing plate part is located in the limiting groove area between the limiting flange and the bottom support plate; (2) Rotate the first fastener and the second fastener to close them, then rotate the fastening bolt to fix the artificial nose connecting part to the inner wall of the hole structure formed by the first fastener and the second fastener, so as to achieve the connection and limitation between the artificial nose body and the connecting part.

[0016] Preferably, during the installation process, the positions of the first fastener and the second fastener on the artificial nose body are restricted, the axial height between the limiting flange and the bottom support plate is h, the thickness of the two wing plates at the lower part of the connecting piece is a, and the insertion depth of the artificial nose connecting part from the upper part of the connecting piece to the lower part of the artificial nose body is L, and L>ha is satisfied during installation; that is, the tracheal cannula is prevented from being separated from the artificial nose end when the tracheal cannula end is pulled downward, thereby improving the practicality of the device.

[0017] Preferably, the thickness a of the two wing plates at the lower portion of the connector is less than and infinitely close to the axial height h between the limiting flange and the bottom supporting plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The artificial nose and the connector are connected by a connecting device, and the main body of the device is fixed on the artificial nose to prevent the endotracheal tube connected to the connector from being separated from the artificial nose. The rotating structure facilitates the opening and closing of the connecting device, making it easier for the operator to control the operation. 2. The limiting flange and the bottom support plate form limiting grooves to limit the wing plates on both sides of the bottom of the connector; this prevents the connector from being separated from the connecting device during use, and also prevents the connector from being separated from the artificial nose body. It also makes it easier for the connector to be fixed to the artificial nose in the hole structure formed by the first clip and the second clip after being connected, which improves installation efficiency. 3. The front end side elevation of the first fastener is also provided with a lateral limit groove, which cooperates with the left end of the covering protrusion and limits the left rotation of the covering protrusion; when the first fastener and the second fastener are rotated closed, the lateral limit groove can prevent the covering protrusion from excessive rotation and causing deformation of the connecting device, thereby improving stability during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the first axonometric structure of the present invention installed on the artificial nose body and the connecting device; Figure 2 This is a second isometric structural diagram of the present invention installed on the artificial nose body and the connecting device; Figure 3 It is an axonometric structural diagram of the present invention; Figure 4 This is a schematic diagram of the first exploded structure of the artificial nose body, the connecting device, the endotracheal tube and the device of the present invention; Figure 5 This is a schematic diagram of the second exploded structure of the artificial nose body, the connecting device, the endotracheal tube and the device of the present invention; Figure 6 It is a schematic cross-sectional structure diagram of the present invention; Figure 7 It is a schematic diagram of the top structure of the present invention; Figure 8 It is a schematic cross-sectional view of the present invention installed on the artificial nose body and the connecting device; Markings in the accompanying drawings: 1. First fastener; 2. Second fastener; 3. Covering convex plate; 4. Fastening bolt; 5. Bottom support plate; 6. Through hole; 7. Wing plate groove; 8. Extended cylinder seat; 9. Limiting flange; 10. Rotating connecting seat; 11. Hemispherical protrusion; 12. Hemispherical groove; 13. Laterally installed shallow slide groove; 14. Paddle structure; 15. Lateral limiting groove; 21. Artificial nose body; 22. Connector; 23. Endotracheal tube; 210. Artificial nose connecting part; 220. Wing plate. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. Example

[0021] Figures 1-8 As shown, the rotating structure is installed on the connecting device; First, after the tracheal cannula 23 is connected to the artificial nose body 21 through the connecting piece 22, the tracheal cannula 23 passes through the through hole 6, and the first fastener 1 and the second fastener 2 are opened and closed and fitted on the main connecting part 210 of the artificial nose. Then, the lower body of the connecting piece 22 and the wing plate part cooperate with the structure of the wing plate groove 7 and are placed into the lower part of the hole structure enclosed by the first fastener 1 and the second fastener 2, so that the wing plate part is located in the limiting groove area formed between the limiting flange 9 and the bottom support plate 5.

[0022] Rotate the first fastener 1 and the second fastener 2 to close, then rotate the fastening bolt 4 to fix the artificial nose connecting part 210 to the inner wall of the hole structure formed by the first fastener 1 and the second fastener 2, thereby achieving the connection and limitation between the artificial nose body 21 and the connecting part 22.

[0023] During the installation process, the positions of the first fastener 1 and the second fastener on the artificial nose body 21 are restricted. The axial height between the limiting flange 9 and the bottom support plate 5 is h, the thickness of the two wing plates at the lower part of the connecting member 22 is a, and the insertion depth of the upper part of the connecting member 22 into the artificial nose connecting part 210 at the lower part of the artificial nose body 21 is L. L>ha is satisfied during installation.

[0024] The thickness a of the two wing plates at the lower part of the connecting member 22 is less than and close to the axial height h between the limiting flange 9 and the bottom supporting plate 5. When ha approaches zero, it is easier to fix during installation.

[0025] The connecting device includes a first clip 1 made of transparent material, a second clip 2, a covering convex plate 3, a bottom supporting plate 5, and a through hole 6; it also includes a fastening bolt 4 and a wing plate slot 7. The rear parts of the first clip 1 and the second clip 2 are connected by a rotating structure, and the front part of the second clip 2 is provided with a covering convex plate 3. After the first clip 1 and the second clip 2 are closed, the covering convex plate 3 covers the outer side of the front of the first clip 1. An internal threaded hole is provided on the upper part of the overlapping area of ​​the covering convex plate 3 and the front of the first clip 1. The fastening bolt 4 can pass through the internal threaded hole and extend to the first clip 1 and the second clip Inside the fastener 2, the first fastener 1 and the second fastener 2 are both provided with bottom supporting plates 5 at their inner bottoms, and a through hole 6 is provided in the middle of the two groups of bottom supporting plates 5. The hole-shaped structure formed by the first fastener 1 and the second fastener 2 is adapted to the outer shape of the artificial nose connecting portion 210 at the lower end of the artificial nose body 21. The inner diameter of the hole-shaped structure at the minimum inner diameter is larger than the outer diameter of the artificial nose connecting portion 210 and the narrow side width of the connecting member 22. The first fastener 1 and the second fastener 2 are respectively provided with wing plate grooves (7) at the front and rear to match the wing plate 220 structures on both sides of the bottom of the connecting member 22.

[0026] It also includes an extended cylinder seat 8, which is provided on the front part of the internal threaded hole on the covering convex plate 3; it also includes a limiting flange 9, which is provided on the lower part of the side of the first clip 1 and the second clip 2. The limiting flange 9 can be segmented or annularly closed along the inner side surface; the limiting flange 9 and the bottom support plate 5 form a limiting groove to limit the wing plates 220 on both sides of the bottom of the connecting member 22.

[0027] The rotating structure includes a rotating connecting seat 10, a hemispherical protrusion 11, a hemispherical groove 12 and a horizontally installed shallow slide groove 13. Two groups of rotating connecting seats 10 are respectively provided on the upper and lower rear parts of the first fastener 1 and the second fastener 2, and the two groups of rotating connecting seats 10 on the second fastener 2 are located between the upper and lower groups of rotating connecting seats 10 on the first fastener 1. The upper end surface of the upper rotating connecting seat 10 of the second fastener 2 and the lower end surface of the lower rotating connecting seat 10 are both provided with hemispherical protrusions 11, and the opposite surfaces of the two groups of rotating connecting seats 10 of the first fastener 1 are both provided with hemispherical grooves 12, and the side surfaces of the hemispherical grooves 12 are provided with horizontally installed shallow slide grooves 13.

[0028] It also includes a paddle structure 14. A group of paddle structures 14 are provided on the outer front sides of the first fastener 1 and the second fastener 2 to limit the artificial nose body 21 and the connecting member 22 through the connecting device, and fix the device body on the artificial nose to prevent the connecting device from being separated from the artificial nose. The rotating structure facilitates the opening and closing of the connecting device, facilitates the operator to perform control operations, and improves the practicality of the device.

[0029] The front side elevation of the first latch 1 also includes a lateral limit slot 15, which engages with the left end of the cover plate 3 and limits the leftward rotation of the cover plate 3. When the first latch 1 and the second latch 2 are rotated together, the lateral limit slot 15 prevents the cover plate 3 from excessively rotating and deforming the connection device, thereby improving installation stability.

[0030] The artificial nose, connector and tracheal tube of the present invention, which are anti-slip tracheal tube connection device and connection method, are common and mature products purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instructions, without the need for creative work by technicians in this field.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An anti-slip endotracheal tube connection device, characterized in that: The invention comprises a connecting device and a rotating structure, wherein the rotating structure is arranged on the connecting device; the connecting device comprises a first clip (1), a second clip (2), a covering convex plate (3), a fastening bolt (4), a bottom support plate (5), a through hole (6) and a wing plate slot (7); the rear parts of the first clip (1) and the second clip (2) are connected through the rotating structure; the front part of the second clip (2) is provided with a covering convex plate (3); after the first clip (1) and the second clip (2) are closed, the covering convex plate (3) covers the outer side of the front part of the first clip (1); an internal threaded hole is provided on the upper part of the overlapping area of ​​the covering convex plate (3) and the front part of the first clip (1); the fastening bolt (4) can pass through the internal threaded hole and extend to Inside the first fastener (1) and the second fastener (2), bottoms of the first fastener (1) and the second fastener (2) are both provided with bottom supporting plates (5), the middle parts of the two groups of bottom supporting plates (5) are provided with through holes (6), and the hole-shaped structure formed by the first fastener (1) and the second fastener (2) are adapted to the outer shape of the artificial nose connecting portion (210) at the lower end of the artificial nose body (21), the inner diameter of the hole-shaped structure at the minimum inner diameter is larger than the outer diameter of the artificial nose connecting portion (210) and the narrow side width of the connecting member (22), and the first fastener (1) and the second fastener (2) are respectively provided with wing plate grooves (7) at the front and rear to match the wing plate (220) structures on both sides of the bottom of the connecting member (22).

2. The anti-slip endotracheal tube connection device according to claim 1, characterized in that: It also includes an extended cylinder seat (8), which is provided on the front portion of the internal threaded hole on the covering convex plate (3).

3. The anti-slip endotracheal tube connection device according to claim 1, characterized in that: The connector (22) further comprises a limiting flange (9), wherein the limiting flange (9) is provided at the lower portion of the inner side surface of the first latch (1) and the second latch (2), and the limiting flange (9) can be segmented or annularly closed along the inner side surface; the limiting flange (9) and the bottom support plate (5) form a limiting groove to limit the wing plates (220) on both sides of the bottom of the connector (22).

4. The anti-slip endotracheal tube connection device according to claim 1, characterized in that: The rotating structure comprises a rotating connection seat (10), a hemispherical protrusion (11), a hemispherical groove (12) and a horizontally mounted shallow slide groove (13). Two groups of rotating connection seats (10) are respectively provided on the upper and lower rear parts of the first clip (1) and the second clip (2), and the two groups of rotating connection seats (10) on the second clip (2) are located between the upper and lower groups of rotating connection seats (10) on the first clip (1). The upper end surface of the upper rotating connection seat (10) of the second clip (2) and the lower end surface of the lower rotating connection seat (10) are both provided with a hemispherical protrusion (11). The opposite surfaces of the two groups of rotating connection seats (10) of the first clip (1) are both provided with a hemispherical groove (12), and the side surfaces of the hemispherical groove (12) are provided with a horizontally mounted shallow slide groove (13).

5. The anti-slip endotracheal tube connection device according to claim 1, characterized in that: The first fastener (1) and the second fastener (2) are also provided, and their main bodies are made of transparent material.

6. The anti-slip endotracheal tube connection device according to claim 1, characterized in that: It also includes a paddle structure (14), and a group of paddle structures (14) are provided on the outer front sides of the first latch (1) and the second latch (2).

7. The anti-slip endotracheal tube connection device according to claim 1, characterized in that: The front end side elevation of the first latch (1) is further provided with a lateral limiting groove (15), which cooperates with the left end of the covering convex plate (3) and limits the leftward rotation of the covering convex plate (3).

8. A connection method based on the anti-slip endotracheal tube connection device according to claims 1-7, characterized in that: The method is used for limiting and fixing the connection between the artificial nose body (21) and the connecting piece (22), and comprises the following steps: 1) After the tracheal tube (23) is connected to the artificial nose body (21) through the connecting piece (22), the tracheal tube (23) passes through the through hole (6), the first fastener (1) and the second fastener (2) are opened and closed and fitted on the main connecting part (210) of the artificial nose, and then the lower body of the connecting piece (22) and the wing plate part are matched with the wing plate groove (7) and placed into the lower part of the hole structure surrounded by the first fastener (1) and the second fastener (2), so that the wing plate part is located in the limiting groove area between the limiting flange (9) and the bottom support plate (5); 2) Rotate the first fastener (1) and the second fastener (2) to close them, and then rotate the fastening bolt (4) to fix the artificial nose connecting portion (210) to the inner side wall of the hole-shaped structure formed by the first fastener (1) and the second fastener (2), thereby achieving connection and positioning of the artificial nose body (21) and the connecting member (22).

9. The connection method according to claim 8, wherein: During the installation process, the positions of the first fastener (1) and the second fastener (2) on the artificial nose body (21) are restricted. The axial height between the limiting flange (9) and the bottom support plate (5) is h, the thickness of the two wing plates at the lower part of the connecting member (22) is a, and the insertion depth of the upper part of the connecting member (22) into the artificial nose connecting portion (210) at the lower part of the artificial nose body (21) is L. During installation, L>ha is satisfied.

10. The connection method according to claim 9, wherein: The thickness a of the two wing plates at the lower portion of the connecting member (22) is less than and close to the axial height h between the limiting flange (9) and the bottom supporting plate (5).

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