CN213760032U

CN213760032U - NCPAP breathing pipeline

Info

Publication number: CN213760032U
Application number: CN202021485123.6U
Authority: CN
Inventors: 张�杰
Original assignee: Beijing Childrens Hospital
Current assignee: Beijing Childrens Hospital
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-07-23
Anticipated expiration: 2030-07-24

Abstract

The utility model relates to an NCPAP breathing pipeline, which comprises two breathing tubes of an NCPAP breathing machine and breathing hoses respectively communicated with the two breathing tubes, wherein the two breathing hoses are communicated through a nasal oxygen tube; the inner wall of the nasal oxygen tube at the joint with the breathing hose is provided with internal threads, and the outer wall of the breathing hose at the joint with the nasal oxygen tube is provided with external threads. Among the respiratory tube, breathe between hose and the nasal oxygen pipe accessible multiple form and consolidate the connection, guaranteed to breathe between hose and the respiratory tube, breathe the steadiness of being connected between hose and the nasal oxygen pipe, effectively prevent not hard up, the emergence of the risk that drops, guarantee to the continuous oxygen suppliment of neonate, avoid appearing because of the respiratory failure that the oxygen suppliment is not enough and appear.

Description

NCPAP breathing pipeline

Technical Field

The utility model belongs to the technical field of medical equipment, concretely relates to NCPAP breathing line.

Background

Ncpap (nasal Continuous Positive Airway pressure), a nasal Continuous Positive Airway pressure, and a non-invasive CPAP breathing mode, are implemented by nasal plugs, face masks, and the like.

Since the respiratory system of the newborn is not developed and matured, the respiratory function is incomplete, and various reasons can cause respiratory failure of the newborn, which is a significant cause of death of the newborn. NCPAP can treat respiratory failure caused by various neonatal diseases, and has remarkable effect.

Since the breathing tube 100 of the NCPAP ventilator is relatively short and hard, and is often not suitable for connecting with the existing nasal plug, and is easy to fall off, when in use, a section of breathing hose 200 is added between the nasal oxygen tube 300 and the breathing tube 100, the breathing hose 200 and the nasal oxygen tube 300 are sequentially communicated to form oxygen supply for the nasal oxygen tube 300.

However, in practical use, due to various reasons, for example, arm flapping of the newborn, and rolling of the newborn may cause looseness or even falling between the breathing hose 200 and the breathing tube 100, may also cause looseness or even falling between the breathing hose 200 and the nasal oxygen tube 300, and may also cause looseness or even falling between the breathing hose 200 and the nasal oxygen tube 300 due to saliva or nasal discharge of the newborn, which may affect oxygen supply to the newborn, and may even cause respiratory failure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a NCPAP breathing pipe to solve among the current breathing pipe the problem that not hard up or even droing appears easily between breathing hose and the breathing pipe, between breathing hose and the nasal oxygen tube.

In order to realize the purpose, the utility model provides a NCPAP breathing pipe, among the breathing pipe, the connection is consolidated to accessible multiple form between breathing hose and the respiratory tube, between breathing hose and the nasal oxygen pipe, has guaranteed between breathing hose and the respiratory tube, the steadiness of connecting between breathing hose and the nasal oxygen pipe, effectively prevents not hard up, the appearance of risk of droing, guarantees the continuous oxygen suppliment to the neonate, avoids appearing because of the respiratory failure that the oxygen suppliment is not enough and appears.

Specifically, the utility model discloses a technical scheme be:

an NCPAP breathing pipeline comprises two breathing tubes of an NCPAP breathing machine and breathing hoses respectively communicated with the two breathing tubes, wherein one ends, far away from the breathing tubes, of the two breathing hoses are communicated through a nasal oxygen tube; the inner wall of the nasal oxygen tube at the joint of the breathing hose is provided with an internal thread, the outer wall of the breathing hose at the joint of the nasal oxygen tube is provided with an external thread, and the breathing hose forms threaded connection with the external thread of the nasal oxygen tube through the internal thread.

Furthermore, at least one buckle is convexly arranged on the outer wall of the breathing tube at the joint of the breathing tube and the breathing hose; a buckle groove matched with the buckle is arranged on the inner wall of the breathing hose at the joint of the breathing pipe along the circumferential direction of the breathing hose; the buckle is matched with the buckle groove to form the buckle connection between the breathing tube and the breathing hose.

Furthermore, at least one connecting bulge is convexly arranged on the outer wall of the breathing hose at the joint of the nasal oxygen tube; a connecting clamping groove matched with the connecting bulge is arranged on the inner wall of the nasal oxygen tube at the joint of the breathing hose; the connecting bulge is matched with the connecting clamping groove to form clamping connection between the nasal oxygen tube and the breathing hose.

Further, the breathing hose is connected with the breathing pipe through a connecting pipe; the connecting pipe is connected with the breathing hose in an adhesive manner, or the connecting pipe and the breathing hose are of an integrated structure; a clamping ring groove is formed in the outer wall of the breathing tube at the joint of the breathing tube and the connecting tube along the circumferential direction of the breathing tube; a clamping bulge matched with the clamping ring groove is convexly arranged on the inner wall of the connecting pipe at the connecting part of the breathing pipe along the circumferential direction of the connecting pipe; the breathing tube is located to the connecting pipe cover, and the joint of connecting pipe is protruding to be connected with the joint annular block of breathing tube, forms the block between connecting pipe and the breathing tube and is connected.

Further, the breathing hose is connected with the nasal oxygen tube through a connecting conduit; the connecting conduit is connected with the breathing hose in an adhesive manner, or the connecting conduit and the breathing hose are of an integrated structure; a connecting ring groove is formed in the inner wall of the nasal oxygen tube at the connecting part of the connecting conduit along the circumferential direction of the nasal oxygen tube; the outer wall of the connecting conduit at the joint of the nasal oxygen tube is convexly provided with a convex part matched with the connecting ring groove along the circumferential direction of the connecting conduit; the connecting conduit is inserted into the nasal oxygen tube, and the convex part of the connecting conduit is clamped with the connecting ring groove of the nasal oxygen tube to form clamping connection between the connecting conduit and the nasal oxygen tube.

Furthermore, two opposite side walls of the connecting pipe are respectively provided with a clamping boss in a protruding mode, the side wall of the clamping boss is provided with a shaft hole penetrating through the clamping boss, a shaft lever is inserted into the shaft hole, and two ends of the shaft lever are located on the outer side of the clamping boss; one end of the clamping rod is rotatably connected with the outer side end of the clamping boss extending out of the shaft lever, and the other end of the clamping rod is provided with a convex ring; a clamping boss matched with the convex ring of the clamping rod is convexly arranged on the outer wall of the breathing tube; the breathing tube is located to the connecting pipe cover, and the rotatory bulge loop of drive of joint pole and block boss joint form the reinforcement of being connected between connecting pipe and the breathing tube.

Furthermore, two opposite side walls of the connecting conduit are respectively provided with a connecting boss in a protruding manner, the side wall of the connecting boss is provided with a connecting shaft hole penetrating through the connecting boss, a connecting shaft rod is inserted into the connecting shaft hole, and two ends of the connecting shaft rod are positioned outside the connecting boss; one end of the connecting rod is rotatably connected with the outer side end of the connecting boss extending out of the connecting shaft rod, and the other end of the connecting rod is provided with a connecting convex ring; the outer wall of the nasal oxygen tube is convexly provided with a connecting convex block matched with the connecting convex ring of the connecting rod; the connecting conduit is inserted into the nasal oxygen tube, and the connecting rod rotates to drive the connecting convex ring to be clamped with the connecting convex block, so that the connection between the connecting conduit and the nasal oxygen tube is reinforced.

The beneficial effects of the utility model reside in that:

the breathing hose and the breathing tube and the nasal oxygen tube are stably connected in multiple connection modes, so that the breathing hose and the breathing tube and the nasal oxygen tube are effectively prevented from loosening or falling off, smooth oxygen supply of a newborn is guaranteed, and the assembly, the disassembly and the use are convenient;

the breathing hose is in threaded connection with the breathing tube, and the breathing hose is in threaded connection with the nasal oxygen tube, so that the breathing hose and the breathing tube, and the breathing hose and the nasal oxygen tube are stably connected;

the buckle is matched with the buckle groove to form buckle connection between the breathing tube and the breathing hose, so that stable connection between the breathing tube and the breathing hose is ensured;

the connecting bulge is matched with the connecting clamping groove to form clamping connection between the nasal oxygen tube and the breathing hose, so that stable connection between the breathing tube and the nasal oxygen tube is ensured;

the connecting pipe is sleeved on the breathing pipe, the clamping bulge of the connecting pipe is clamped with the clamping ring groove of the breathing pipe to form clamping connection between the breathing hose and the breathing pipe through the connecting pipe, and stable connection between the breathing pipe and the breathing hose is ensured;

the connecting conduit is inserted into the nasal oxygen tube, the connecting bulge of the connecting conduit is clamped with the connecting annular groove of the nasal oxygen tube to form clamping connection between the breathing hose and the nasal oxygen tube through the connecting conduit, and the stable connection between the breathing tube and the nasal oxygen tube is ensured;

the connecting pipe is additionally provided with a clamping boss, the breathing tube is additionally provided with a clamping boss, and the connecting rod and the breathing tube are reinforced through the clamping rod, so that the stable connection between the breathing tube and the breathing hose is further ensured;

add the connection boss on the connecting conduit, add the connection lug on the nasal oxygen pipe, form the reinforcement of being connected between connecting conduit and the nasal oxygen pipe in pairs through the connecting rod, further guarantee the stability of support.

Drawings

Fig. 1 is a schematic structural diagram of an NCPAP respiratory circuit provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a snap connection between a breathing hose and a breathing tube in an NCPAP breathing circuit according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of the fastening connection between the breathing hose and the nasal oxygen tube in the NCPAP breathing circuit according to embodiment 1 of the present invention;

fig. 4 is a schematic structural view of the NCPAP respiratory circuit according to embodiment 1 of the present invention, with a connecting tube and a connecting conduit;

fig. 5 is a schematic structural view of the fastening connection between the connecting tube and the breathing tube in the NCPAP breathing circuit according to embodiment 1 of the present invention;

fig. 6 is a schematic structural view of the clamping connection between the connecting conduit and the nasal oxygen tube in the NCPAP respiratory conduit according to embodiment 1 of the present invention;

fig. 7 is a schematic view of a connection structure between a connection tube and a breathing tube in an NCPAP breathing circuit according to embodiment 2 of the present invention;

fig. 8 is a schematic view of a connection structure between a connecting conduit and a nasal oxygen tube in the NCPAP respiratory tract according to embodiment 3 of the present invention;

wherein, 1, a buckle, 11, a buckle groove;

2. the connecting bulge 21 is connected with the clamping groove;

3. the connecting pipe is 31, a clamping ring groove 32, a clamping protrusion 33, a clamping boss 34, a shaft hole 35 and a shaft rod;

4. the connecting guide pipe 41, the connecting ring groove 42, the bulge 43, the connecting boss 44, the connecting shaft hole 45 and the connecting shaft rod;

5. a clamping rod 51 and a clamping boss;

6. a connecting rod 61, a connecting lug;

100. a breathing tube;

200. a breathing hose;

300. a nasal oxygen tube.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Example 1

Referring to fig. 1 to 6, the NCPAP breathing circuit provided by the present invention includes two breathing tubes 100 of an NCPAP ventilator and breathing hoses 200 respectively communicated with the two breathing tubes 100, wherein one ends of the two breathing hoses 200, which are far away from the breathing tubes 100, are communicated through nasal oxygen tubes 300, external threads (not shown) are provided on the outer wall of the breathing tube 100 at the connection with the breathing hose 200, internal threads (not shown) are provided on the inner wall of the breathing hose 200 at the connection with the breathing tube 100, and the breathing hose 200 is in threaded connection with the external threads of the breathing tube 100 through the internal threads; an inner thread (not shown) is provided on the inner wall of the nasal oxygen tube 300 connected to the respiratory tube 200, an outer thread (not shown) is provided on the outer wall of the respiratory tube 200 connected to the nasal oxygen tube 300, and the respiratory tube 200 is in threaded connection with the outer thread of the nasal oxygen tube 300 through the inner thread.

Further, referring to fig. 2, at least one buckle 1 is convexly arranged on the outer wall of the breathing tube 100 at the connection part of the breathing hose 200; a buckle groove 11 matched with the buckle 1 is arranged on the inner wall of the breathing hose 200 at the joint of the breathing tube 100 along the circumferential direction of the breathing hose 200; the buckle 1 is matched with the buckle groove 11 to form a buckle connection between the breathing tube 100 and the breathing hose 200.

Breathe through buckle 1 and the cooperation of buckle recess 11 between hose 200 and the breathing tube 100, form the buckle and be connected, guarantee to breathe firm the being connected between hose 200 and the breathing tube 100, avoid appearing not hard up coming off, the design of buckle connection moreover makes things convenient for the dismouting between hose 200 and the breathing tube 100.

Further, referring to fig. 3, at least one connecting protrusion 2 is convexly arranged on the outer wall of the breathing hose 200 at the connecting position of the nasal oxygen tube 300; a connecting clamping groove 21 matched with the connecting bulge 2 is arranged on the inner wall of the nasal oxygen tube 300 at the joint of the breathing hose 200; the connecting protrusion 2 is matched with the connecting clamping groove 21 to form clamping connection between the nasal oxygen tube 300 and the breathing hose 200.

The nose oxygen pipe 300 and the breathing hose 200 are matched with each other through the connecting protrusion and the connecting clamping groove 21 to form a clamping connection, so that the stable connection between the nose oxygen pipe and the breathing hose 200 is ensured, the loosening and falling are avoided, and the nose oxygen pipe 300 and the breathing hose 200 are convenient to disassemble and assemble and use due to the design of clamping connection.

Further, referring to fig. 5, the breathing hose 200 is connected to the breathing tube 100 through a connection tube 3; the connecting pipe 3 is connected with the breathing hose 200 in an adhesive manner, or the connecting pipe 3 and the breathing hose 200 are of an integrated structure; a clamping ring groove 31 is formed in the outer wall of the breathing tube 100 at the joint of the connecting tube 3 along the circumferential direction of the breathing tube 100; a clamping protrusion 32 matched with the clamping ring groove 31 is convexly arranged on the inner wall of the connecting pipe 3 at the joint of the breathing pipe 100 along the circumferential direction of the connecting pipe 3; the connecting pipe 3 is sleeved on the breathing pipe 100, and the clamping protrusion 32 of the connecting pipe 3 is clamped with the clamping ring groove 31 of the breathing pipe 100 to form clamping connection between the connecting pipe 3 and the breathing pipe 100.

Set up connecting pipe 3 between breathing hose 200 and breathing tube 100, form the block through the cooperation of joint annular 31 and the protruding 32 of joint between connecting pipe 3 and the breathing tube and be connected, guarantee the firm connection between connecting pipe 3 and breathing tube 100, avoid appearing becoming flexible and drop, the structural design that the block is connected, the dismouting of being convenient for, connecting pipe 3's increase in addition, but extension length is convenient for enlarge application range.

Further, referring to fig. 6, the breathing hose 200 is connected to the nasal oxygen tube 300 through a connecting conduit 4; the connecting conduit 4 is connected with the breathing hose 200 in an adhesive manner, or the connecting conduit 4 and the breathing hose 200 are of an integrated structure; the inner wall of the nasal oxygen tube 300 at the connection part with the connecting conduit 4 is provided with a connecting ring groove 41 along the circumferential direction of the nasal oxygen tube 300; the outer wall of the connecting conduit 4 at the joint of the nasal oxygen tube 300 is convexly provided with a convex part 42 matched with the connecting ring groove 41 along the circumferential direction of the connecting conduit 4; the connecting conduit 4 is inserted into the nasal oxygen tube 300, and the convex part 42 of the connecting conduit 4 is clamped with the connecting ring groove 41 of the nasal oxygen tube 300 to form clamping connection between the connecting conduit 4 and the nasal oxygen tube 300.

Set up connecting tube 4 between breathing hose 200 and nasal oxygen pipe 300, form the joint through bellying 42 and the cooperation of connecting ring groove 41 between connecting tube 4 and the nasal oxygen pipe and be connected, the structural design that the joint is connected, can guarantee the firm connection between connecting tube 4 and the nasal oxygen pipe 300, prevent not hard up and drop, and the structural design that the joint is connected, the dismouting of being convenient for, connecting tube 4's increase, can prolong breathing hose 200's length, be convenient for enlarge application range.

The utility model provides a NCPAP breathing tube's application method as follows:

during the use, will breathe hose 200 and be connected with breathing tube 100 through threaded connection (or block connection or buckle connection), will breathe the hose 200 other end and be connected with nasal oxygen tube 300 through screw thread (or block connection or buckle connection), thereby guarantee breathing tube 100-breathe hose 200-nasal oxygen tube 300 between the firm connection, avoid appearing becoming flexible, smooth for the neonate's oxygen suppliment.

Example 2

Referring to fig. 7, two opposite side walls of the connecting pipe 3 are respectively provided with a clamping boss 33 in a protruding manner, a shaft hole 34 penetrating through the clamping boss 33 is formed in the side wall of the clamping boss 33, a shaft lever 35 is inserted into the shaft hole 34, and two ends of the shaft lever 35 are located at the outer side of the clamping boss 33; one end of the clamping rod 5 is rotatably connected with the outer side end of the clamping boss 33 extending out of the shaft lever 35, and the other end of the clamping rod 5 is provided with a convex ring (not shown); a clamping boss 51 matched with the convex ring of the clamping rod 5 is convexly arranged on the outer wall of the breathing tube 100; the connecting pipe 3 is sleeved on the breathing pipe 100, and the clamping rod 5 rotates to drive the convex ring to be clamped with the clamping boss 51, so that the connection between the connecting pipe 3 and the breathing pipe 100 is reinforced.

The increase of joint boss 33 on connecting pipe 3, the increase of block boss 51 on respiratory tube 100, joint boss 33-joint pole 5-block boss 51 cooperation form the reinforcement of being connected between connecting pipe 3 and respiratory tube 100, and the block between combining connecting pipe 3 and respiratory tube 100 is connected, and the firm connection between dual guarantee connecting pipe 3 and respiratory tube 100 effectively prevents to drop.

The rest is the same as example 1.

Example 3

Referring to fig. 8, two opposite side walls of the connecting conduit 4 are respectively provided with a connecting boss 43 in a protruding manner, a connecting shaft hole 44 penetrating through the connecting boss 43 is formed in the side wall of the connecting boss 43, a connecting shaft rod 45 is inserted into the connecting shaft hole 44, and two ends of the connecting shaft rod 45 are located outside the connecting boss 43; one end of the connecting rod 6 is rotatably connected with the outer side end, extending out of the connecting boss 43, of the connecting shaft rod 45, and the other end of the connecting rod 6 is provided with a connecting convex ring; the outer wall of the nasal oxygen tube 300 is convexly provided with a connecting lug 61 matched with the connecting convex ring of the connecting rod 6; the connecting conduit 6 is inserted into the nasal oxygen tube 300, and the connecting convex ring is rotationally driven by the connecting rod 6 to be clamped with the connecting convex block 61, so that the connection between the connecting conduit 4 and the nasal oxygen tube 300 is reinforced.

The connection boss 43 on the connecting conduit 4 is additionally arranged, the connecting lug 61 on the nasal oxygen tube 300 is additionally arranged, and the connection boss 43-the connecting rod 6-the connecting lug 61 are matched to form the reinforcement of the connection between the connecting conduit 4 and the nasal oxygen tube 300, and the stable connection between the connecting conduit 4 and the nasal oxygen tube 300 is dually ensured by combining the clamping connection between the connecting conduit 4 and the nasal oxygen tube 300, so that the looseness and the falling off are effectively prevented.

The rest is the same as example 1.

Although the present invention has been described in detail with reference to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made to the invention or a functional block can be deleted. Therefore, such modifications or improvements or deletions made without departing from the spirit of the invention are intended to be within the scope of the invention.

Claims

1. An NCPAP breathing circuit comprises two breathing tubes (100) of an NCPAP breathing machine and breathing hoses (200) respectively communicated with the two breathing tubes (100), wherein one ends of the two breathing hoses (200) far away from the breathing tubes (100) are communicated through a nasal oxygen tube (300),

the outer wall of the breathing tube (100) at the joint with the breathing hose (200) is provided with external threads, the inner wall of the breathing hose (200) at the joint with the breathing tube (100) is provided with internal threads, and the breathing hose (200) is in threaded connection with the external threads of the breathing tube (100) through the internal threads;

with nasal oxygen tube (300) inner wall of breathing hose (200) junction is provided with the internal thread, with breathing hose (200) outer wall of nasal oxygen tube (300) junction is provided with the external screw thread, breathing hose (200) form threaded connection through the external screw thread of internal thread and nasal oxygen tube (300).

2. The NCPAP breathing circuit according to claim 1, wherein at least one buckle (1) is convexly arranged on the outer wall of the breathing tube (100) at the connection with the breathing hose (200);

a buckle groove (11) matched with the buckle (1) is arranged on the inner wall of the breathing hose (200) at the joint of the breathing tube (100) along the circumferential direction of the breathing hose (200);

the buckle (1) is matched with the buckle groove (11) to form buckle connection between the breathing tube (100) and the breathing hose (200).

3. The NCPAP breathing circuit according to claim 1, wherein at least one connecting projection (2) is convexly arranged on the outer wall of the breathing hose (200) connected with the nasal oxygen tube (300);

a connecting clamping groove (21) matched with the connecting bulge (2) is arranged on the inner wall of the nasal oxygen tube (300) at the joint of the breathing hose (200);

the connecting bulge (2) is matched with the connecting clamping groove (21) to form clamping connection between the nasal oxygen tube (300) and the breathing hose (200).

4. The NCPAP breathing circuit according to claim 1, wherein the breathing hose (200) is connected to the breathing tube (100) by a connecting tube (3);

the connecting pipe (3) is connected with the breathing hose (200) in an adhesive manner, or the connecting pipe (3) and the breathing hose (200) are of an integrated structure;

a clamping ring groove (31) is formed in the outer wall of the breathing tube (100) at the joint of the breathing tube (3) along the circumferential direction of the breathing tube (100);

a clamping protrusion (32) matched with the clamping ring groove (31) is convexly arranged on the inner wall of the connecting pipe (3) at the joint of the breathing pipe (100) along the circumferential direction of the connecting pipe (3);

the breathing tube (100) is sleeved with the connecting tube (3), and the clamping protrusion (32) of the connecting tube (3) is clamped with the clamping ring groove (31) of the breathing tube (100) to form clamping connection between the connecting tube (3) and the breathing tube (100).

5. The NCPAP breathing circuit according to claim 1, wherein the breathing hose (200) is connected to the nasal oxygen tube (300) by a connecting conduit (4);

the connecting conduit (4) is connected with the breathing hose (200) in an adhesive manner, or the connecting conduit (4) and the breathing hose (200) are of an integrated structure;

a connecting ring groove (41) is arranged on the inner wall of the nasal oxygen tube (300) at the connecting part of the connecting conduit (4) along the circumferential direction of the nasal oxygen tube (300);

a bulge part (42) matched with the connecting ring groove (41) is convexly arranged on the outer wall of the connecting conduit (4) at the connecting part of the nasal oxygen tube (300) along the circumferential direction of the connecting conduit (4);

the connecting conduit (4) is inserted into the nasal oxygen tube (300), and the bulge (42) of the connecting conduit (4) is clamped with the connecting ring groove (41) of the nasal oxygen tube (300) to form clamping connection between the connecting conduit (4) and the nasal oxygen tube (300).

6. The NCPAP breathing circuit according to claim 4, wherein two opposite side walls of the connecting pipe (3) are respectively provided with a clamping boss (33) in a protruding manner, the side wall of the clamping boss (33) is provided with a shaft hole (34) penetrating through the clamping boss (33), a shaft rod (35) is inserted into the shaft hole (34), and two ends of the shaft rod (35) are positioned outside the clamping boss (33);

one end of the clamping rod (5) is rotatably connected with the outer side end, extending out of the clamping boss (33), of the shaft lever (35), and a convex ring is arranged at the other end of the clamping rod (5);

a clamping boss (51) matched with the convex ring of the clamping rod (5) is convexly arranged on the outer wall of the breathing tube (100);

breathing tube (100) are located to connecting pipe (3) cover, and joint pole (5) rotation drive bulge loop and block boss (51) joint form the reinforcement of being connected between connecting pipe (3) and breathing tube (100).

7. The NCPAP breathing circuit according to claim 5, wherein the connecting bosses (43) are respectively convexly arranged on two opposite side walls of the connecting conduit (4), the side walls of the connecting bosses (43) are provided with connecting shaft holes (44) penetrating through the connecting bosses (43), connecting shaft rods (45) are inserted into the connecting shaft holes (44), and two ends of the connecting shaft rods (45) are positioned outside the connecting bosses (43);

one end of the connecting rod (6) is rotatably connected with the outer side end, extending out of the connecting boss (43), of the connecting shaft rod (45), and a connecting convex ring is arranged at the other end of the connecting rod (6);

the outer wall of the nasal oxygen tube (300) is convexly provided with a connecting convex block (61) matched with the connecting convex ring of the connecting rod (6);

the connecting conduit (4) is inserted into the nasal oxygen tube (300), the connecting rod (6) rotates to drive the connecting convex ring to be clamped with the connecting convex block (61), and reinforcement of connection between the connecting conduit (4) and the nasal oxygen tube (300) is formed.