Tracheal catheter fixing angle adjustable device

Abstract

The invention discloses a tracheal catheter fixing angle adjustable device which comprises a stabilizing plate, a fixing belt, a limiting mechanism, an adjusting mechanism and a limiting mechanism, the fixing belt is arranged at the outer end of the stabilizing plate, the limiting mechanism is arranged in the middle of the stabilizing plate, the adjusting mechanism is arranged in the limiting mechanism, and the limiting mechanism is arranged in the limiting mechanism. The limiting mechanism is arranged on the adjusting mechanism; the limiting mechanism comprises a center ring, an outer protruding ring, a rolling groove, a screw hole, a blocking column, an angle ruler, a rotating head, a stud and an anti-skid pad. According to the scheme, the practicability, safety and convenience of fixing and angle adjusting of the tracheal catheter are effectively improved on the whole, and the use requirements in various clinical scenes are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tracheal tube, in particular to a tracheal tube fixed angle adjustable device. BACKGROUND

[0002] The tracheal tube is a medical device for establishing and maintaining airway patency, which is mainly made of medical polymer materials (such as polyvinyl chloride, silicone, etc.), usually in a hollow, tubular structure with a certain arc, and some models are also equipped with inflatable cuff, sputum suction side hole and other auxiliary designs. It plays a core role in clinical first aid, anesthesia, intensive care and other scenes, and the core function is to ensure that gas can effectively enter and exit the lungs to maintain normal respiratory function.

[0003] The existing tracheal tube fixed angle adjustable device has the following disadvantages: most products can only achieve simple fixation of the tracheal tube (such as single clamp, strap or paste fixation), the fixation stability is poor, and the tube is easily loosened and displaced due to patient position change, airflow impact or secretion; Even a few devices with angle adjustment function also have the problem of single adjustment method - only supporting rough adjustment in a single plane (such as only forward and backward or left and right adjustment), lacking multi-dimensional (such as tilt + rotation) flexible adaptation ability, and the adjustment precision is low (no fine scale, only preset fixed gear), the operation is cumbersome (requires special tools or two-handed cooperation), which cannot meet the needs of precise and convenient adjustment of the tube angle in different patients' anatomical differences, body position changes (such as lateral position, prone position) and diagnosis and treatment operations (such as sputum suction, bronchoscopy), which not only increases the operation burden of medical staff, but also increases the risk of airway mucosa damage and insufficient ventilation due to improper angle adaptation.

[0004] Therefore, a solution is needed. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a tracheal tube fixed angle adjustable device to solve the problems raised in the background art.

[0007] (II) Technical solutions

[0008] To achieve the above purpose, the present application is realized by the following technical solutions: A tracheal tube fixed angle adjustable device, comprising a stable plate, a fixing belt, a limiting mechanism, an adjusting mechanism and a limiting mechanism, the fixing belt is arranged at the outer end of the stable plate, the limiting mechanism is arranged in the middle of the stable plate, the adjusting mechanism is arranged inside the limiting mechanism, and the limiting mechanism is arranged on the adjusting mechanism. The limiting mechanism comprises a center ring, an outer convex ring, a rolling groove, screw holes, a blocking column, an angle scale, a rotating head, a stud and an anti-skid pad, the center ring is arranged in the middle of the stable plate, the outer convex ring is arranged at the front end of the center ring, the rolling groove is arranged in the inner ring of the center ring and the outer convex ring, the screw holes are uniformly arranged on the outer convex ring, the blocking columns are oppositely arranged at the top of the front end of the outer convex ring, the angle scale is arranged between the two blocking columns, the rotating head is arranged at the outer end of each screw hole, the stud is arranged at the inner end of each rotating head and inside the screw hole, and the anti-skid pad is arranged at the inner end of each stud.

[0009] Preferably, the circumference of the outer convex ring is smaller than the circumference of the center ring, the thickness of the outer convex ring in the front-rear direction is greater than the thickness of the center ring in the front-rear direction, the blocking column is in a cylindrical structure, and the stable plate, the center ring, the outer convex ring and the blocking column are integrally formed.

[0010] Preferably, the rolling groove is in a wheel structure recessed to the periphery and the vertical section of the rolling groove is in an arc structure, the rolling groove is spaced from the front end and the rear end of the outer convex ring, the twenty-degree angle between the two blocking columns and the center point of the front end of the outer convex ring, the angle scale is distributed along the front end of the outer convex ring in a circumferential direction and is in an overall arc structure, and the angle scale is designed to be concave.

[0011] Preferably, the circumference of the rotating head is greater than the circumference of the stud, the circumference of the anti-skid pad is smaller than the circumference of the stud, and the rotating head and the stud are integrally formed.

[0012] Preferably, the adjusting mechanism comprises an adjusting ball, a limiting groove, an anti-skid rubber tube, an expansion groove, a spring, a fixed seat, a limiting ball and an anti-skid layer, the adjusting ball is arranged inside the rolling groove, the limiting groove is arranged in the middle of the adjusting ball in a front-rear direction, the anti-skid rubber tube is arranged along the inner wall of the limiting groove inside the limiting groove, the expansion grooves are uniformly arranged inside the adjusting ball, the spring is arranged inside each expansion groove and connected to the inner end of the expansion groove, the fixed seat is arranged at the outer end of each spring, the limiting ball is arranged at the outer end of each fixed seat, and the anti-skid layer is arranged at the outer end of each limiting ball.

[0013] Preferably, the length of the front-to-back direction of the adjusting ball is less than the length of the up-to-down direction, each of the telescopic grooves faces the center of the limiting groove inside the adjusting ball, the telescopic grooves are distributed in an upper-middle-lower structure on the left and right sides of the vertical center line of the limiting groove and are opposite to each other, the included angle between each adjacent two telescopic grooves is forty-five degrees, each six telescopic grooves on the left and right sides form a group and are equidistantly distributed along the length direction of the limiting groove, a gap is left between the left three telescopic grooves and the right three telescopic grooves of each group to allow the sleeve to vertically pass through, and each telescopic groove simultaneously penetrates the antiskid rubber cylinder at the current position.

[0014] Preferably, the fixing seat is in a cylindrical structure, the lower half of the limiting ball is located inside the fixing seat, the fixing seat and the limiting ball are integrally formed, and the antiskid layer is located in the upper half of the limiting ball; in the state that the spring is relaxed, the antiskid layer is completely exposed inside the limiting groove and the fixing seat is also exposed inside the limiting groove.

[0015] Preferably, the transverse area of the middle part of the adjusting ball is located inside the rolling groove, and the curved surface structure of the adjusting ball is consistent with the curved surface structure of the rolling groove, so that the adjusting ball can smoothly rotate inside the rolling groove.

[0016] Preferably, the limiting mechanism comprises a limiting ring and a limiting rod, the limiting ring is arranged at the front half of the adjusting ball, and the limiting rod is arranged at the top of the limiting ring.

[0017] Preferably, the limiting ring is in an isosceles trapezoidal structure when viewed from the side, the inner surface of the limiting ring is in an arc structure and is consistent with the curved surface structure of the adjusting ball, the limiting rod is in a cylindrical structure and is located between the left and right blocking columns, the adjusting ball can be tilted in a three-hundred-and-sixty-degree direction around the limiting ring, and the tilting angle is limited within fifteen degrees, and the adjusting ball, the limiting ring and the limiting rod are integrally formed.

[0018] (Three) beneficial effects

[0019] The application provides a tracheal tube fixing angle adjustable device. 1. Good stability and adaptability The adjusting mechanism exerts pressure on the tracheal tube through springs, limiting balls and other components, can stably fix tracheal tubes of different thicknesses, and improves the flexibility and universality of use.

[0020] The cross-distributed rotating heads and studs can provide stable support for the adjusting ball, further enhance the overall fixing effect, and reduce the risk of displacement of the tracheal tube.

[0021] Flexible and safe and controllable angle adjustment The adjusting ball can be tilted in 360 degrees, and the limiting ring controls the tilt angle within 15 degrees, which meets the needs of multi-directional adjustment and airway safety.

[0022] The adjusting ball can be rotated left and right, and the blocking column limits the rotation range within 20 degrees, which ensures the flexibility of adjustment and the safety of operation.

[0023] Convenient and efficient operation Only need to rotate the rotating head to release / re-fix the adjusting ball, the angle adjustment steps are simple, which is convenient for medical staff to quickly operate to save time.

[0024] The design of the stabilizing plate and the fixing belt is convenient for fixing the device at the appropriate part of the patient, and simplifies the overall use process. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure diagram of the limiting ring of the whole structure of the present application is shown and the limiting ring is not shown; Figure 2 The detailed structure diagram of the present application is based on Figure 1 ; Figure 3 The structure diagram of the limiting mechanism of the present application is shown; Figure 4 The structure diagram of the rotating head, screw post and non-slip pad of the present application is shown; Figure 5 The structure diagram of the adjusting mechanism of the present application is shown, and the limiting ring is not shown; Figure 6 The structure diagram of the outer surface of the adjusting ball of the present application is shown; Figure 7 The structure diagram of the limiting mechanism of the present application is shown; Figure 8 The internal structure diagram of the adjusting ball of the present application is shown; Figure 9 The internal perspective detailed structure diagram of the adjusting ball of the present application is shown; Figure 10 The structure diagram of the fixing seat, limiting mechanism and non-slip layer of the present application is shown.

[0026] 1-stabilizing plate; 2-fixing belt; 3-limiting mechanism; 31-center ring; 32-outer convex ring; 33-rolling groove; 34-screw hole; 35-blocking column; 36-angle scale; 37-rotating head; 38-screw post; 39-non-slip pad; 4-adjusting mechanism; 41-adjusting ball; 42-limiting groove; 43-non-slip rubber cylinder; 44-elastic groove; 45-spring; 46-fixing seat; 47-limiting ball; 48-non-slip layer; 5-limiting mechanism; 51-limiting ring; 52-limiting rod. DETAILED DESCRIPTION

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0028] Please refer to Figures 1-10 The embodiment of the present application provides a technical solution: including a stable plate 1, a fixing belt 2, a limiting mechanism 3, an adjusting mechanism 4 and a limiting mechanism 5, the fixing belt 2 is arranged at the outer end of the stable plate 1, the limiting mechanism 3 is arranged at the middle of the stable plate 1, the adjusting mechanism 4 is arranged inside the limiting mechanism 3, and the limiting mechanism 5 is arranged on the adjusting mechanism 4.

[0029] The limiting mechanism 3 includes a center ring 31, an outer convex ring 32, a rolling groove 33, a screw hole 34, a blocking column 35, an angle scale 36, a rotating head 37, a stud 38 and an anti-skid pad 39, the center ring 31 is arranged in the middle of the stable plate 1, the outer convex ring 32 is arranged at the front end of the center ring 31, the rolling groove 33 is arranged in the inner circle of the center ring 31 and the outer convex ring 32, the screw hole 34 is uniformly arranged on the outer convex ring 32, the blocking column 35 is arranged at the top of the front end of the outer convex ring 32, the angle scale 36 is arranged between the two blocking columns 35, the rotating head 37 is arranged at the outer end of each screw hole 34, the stud 38 is arranged at the inner end of each rotating head 37 and located inside the screw hole 34, and the anti-skid pad 39 is arranged at the inner end of each stud 38.

[0030] In detail, the circumference of the outer convex ring 32 is smaller than the circumference of the center ring 31, the thickness of the outer convex ring 32 in the front-rear direction is greater than the thickness of the center ring 31 in the front-rear direction, the blocking column 35 is in a cylindrical structure, and the stable plate 1, the center ring 31, the outer convex ring 32 and the blocking column 35 are integrally formed.

[0031] The rolling groove 33 is in a wheel structure recessed to the periphery and the vertical section of the rolling groove 33 is in an arc structure, the rolling groove 33 is spaced from the front end and the rear end of the outer convex ring 32, the two blocking columns 35 and the center point of the front end of the outer convex ring 32 form a twenty-degree angle, the angle scale 36 is distributed along the front end of the outer convex ring 32 in a circumferential direction and is in an overall arc structure, and the angle scale 36 is designed in a concave manner.

[0032] The circumference of the rotating head 37 is greater than the circumference of the stud 38, the circumference of the anti-skid pad 39 is smaller than the circumference of the stud 38, and the rotating head 37 and the stud 38 are integrally formed.

[0033] The adjusting mechanism 4 comprises an adjusting ball 41, a limiting groove 42, an anti-skid rubber cylinder 43, an expansion groove 44, a spring 45, a fixing base 46, a limiting ball 47 and an anti-skid layer 48, the adjusting ball 41 is arranged inside the rolling groove 33, the limiting groove 42 is arranged through the middle part of the adjusting ball 41, the anti-skid rubber cylinder 43 is arranged along the inner wall of the limiting groove 42, the expansion grooves 44 are uniformly arranged inside the adjusting ball 41, the spring 45 is arranged inside each expansion groove 44 and connected with the inner end of the expansion groove 44, the fixing base 46 is arranged at the outer end of each spring 45, the limiting ball 47 is arranged at the outer end of each fixing base 46, and the anti-skid layer 48 is arranged at the outer end of each limiting ball 47.

[0034] The length of the adjusting ball 41 in the front-rear direction is less than the length in the up-down direction, each expansion groove 44 faces the center of the limiting groove 42 inside the adjusting ball 41, the expansion grooves 44 are distributed in upper-middle-lower structure on the left and right sides of the vertical center line of the limiting groove 42 and are opposite to each other, the included angle between each adjacent two expansion grooves 44 is forty-five degrees, each six expansion grooves 44 opposite to each other form a group and are equidistantly distributed along the length direction of the limiting groove 42, a gap is left between the left three expansion grooves 44 and the right three expansion grooves 44 of each group for the vertical passing of the sleeve bag, and each expansion groove 44 simultaneously penetrates the anti-skid rubber cylinder 43 at the current position.

[0035] The fixing base 46 is in cylindrical structure, the lower half of the limiting ball 47 is located inside the fixing base 46, the fixing base 46 and the limiting ball 47 are integrally formed, and the anti-skid layer 48 is located at the upper half of the limiting ball 47, in the relaxed state of the spring 45, the anti-skid layer 48 is completely exposed inside the limiting groove 42 and a small part of the fixing base 46 is also exposed inside the limiting groove 42.

[0036] The transverse area of the middle part of the adjusting ball 41 is located inside the rolling groove 33 and the curved surface structure of the adjusting ball 41 matches the curved surface structure of the rolling groove 33, and the adjusting ball 41 can smoothly rotate inside the rolling groove 33.

[0037] The limiting mechanism 5 comprises a limiting ring 51 and a limiting rod 52, the limiting ring 51 is arranged at the front half of the adjusting ball 41, and the limiting rod 52 is arranged at the top of the limiting ring 51.

[0038] The limiting ring 51 is in isosceles trapezoidal structure from the side, the inner surface of the limiting ring 51 is in arc structure and matches the curved surface structure of the adjusting ball 41, the limiting rod 52 is in cylindrical structure and is located between the left and right two blocking columns 35, the adjusting ball 41 can tilt with the limiting ring 51 in the three hundred and sixty degrees direction around and the tilting angle is limited within fifteen degrees, and the adjusting ball 41, the limiting ring 51 and the limiting rod 52 are integrally formed.

[0039] Scheme analysis: I. Good fixing stability and adaptability 1. With the help of components such as spring 45, fixing seat 46, and limiting ball 47 in the adjusting mechanism 4, when the endotracheal tube passes through the anti-slip rubber sleeve 43, the limiting ball 47 will be squeezed towards the telescopic groove 44 under the force of spring 45, and will apply pressure to the endotracheal tube through the reaction force, thus firmly fixing the endotracheal tube. Moreover, this structure can be adapted to endotracheal tubes of different thicknesses, eliminating the need to change the fixing device according to the thickness of the tube, thus improving the flexibility and versatility of use.

[0040] 2. The rotating head 37 and the stud 38 in the limiting mechanism are distributed in a cross structure. When the rotating head 37 is tightened to fix the adjusting ball 41, it can provide stable support for the adjusting ball 41, further enhancing the overall stability of the fixation and reducing the risk of the conduit shifting due to unstable fixation.

[0041] II. Flexible and safe angle adjustment. 1. The adjusting ball 41 can rotate smoothly within the roller groove 33, and can tilt in all directions of 360 degrees. At the same time, the limiting ring 51 limits the tilt angle to within 15 degrees. This not only meets the need for multi-directional adjustment of the endotracheal tube angle during surgery, but also avoids damage to the patient's airway that may be caused by excessive tilting, thus providing strong protection for surgical safety.

[0042] 2. The adjusting ball 41 can also rotate to the left or right. When rotating, the limiting ring 51 drives the limiting rod 52 to rotate synchronously. The rotation range is limited to within 20 degrees by the two left and right stop posts 35. This ensures both the flexibility of adjustment and the safety of operation.

[0043] III. Convenient and efficient operation 1. When adjusting the angle of the endotracheal tube, simply rotate the stud 38 slightly through the rotating head 37 to release the fixation of the adjusting ball 41, and the angle can be adjusted. After adjustment, tighten the rotating head 37 to fix it again. The operation steps are simple, which makes it easy for medical staff to operate quickly and saves surgical time.

[0044] 2. The design of the fixation strap 2 and the stabilizing plate 1 makes it easy to fix the device to the appropriate part of the patient, further simplifying the usage process.

[0045] Working principle: In use, the cuff of the endotracheal tube head is vertically inserted through the anti-skid rubber sleeve 43, and the cuff passes through the longitudinal gap between the left three and right three limiting balls 47. The space between each set of six limiting balls 47 is passed through by the endotracheal tube, and when the endotracheal tube is subsequently retracted after passing through, it will touch the spherical surface of each limiting ball 47 to extrude each limiting ball 47 in the direction of the respective telescopic groove 44 by the force of the spring 45. The spring 45 exerts pressure on each limiting ball 47, which can be stably fixed when the action of inserting the endotracheal tube is stopped, and can also adapt to endotracheal tubes of different thicknesses. When the endotracheal tube needs to be adjusted during surgery, each knob 37 can be rotated out a little until the anti-skid pad 39 no longer contacts the adjusting ball 41. The knob 37 has four and is distributed in a cross structure, which can provide stable support for the fixation of the adjusting ball 41. After the adjusting ball 41 is unfixed, the adjusting ball 41 can be tilted in the direction of 360 degrees around it, and the limiting ring 51 limits the tilt angle to within 15 degrees to provide strong protection for surgical safety. When the tilt angle reaches 15 degrees, the edge of the limiting ring 51 will abut against the front end face of the outer convex ring 32 to prevent further tilting; at the same time, the adjusting ball 41 can also be rotated to the left or right, which also has safety protection. When rotating, the limiting ring 51 drives the limiting rod 52 to rotate synchronously, and the rotation amplitude is limited by the left and right two stop columns 35 to within 20 degrees. After adjusting, one hand holds the endotracheal tube, and the other hand tightens any one knob 37, and then the hand can be released to tighten the remaining all knobs 37 to complete the re-fixation of the adjusting ball 41.

[0046] Technical effects of implementing the present solution: The endotracheal tube angle-adjustable fixing device can stably adapt to endotracheal tubes of different thicknesses in terms of fixation, can be flexibly adjusted in multiple directions and has a safety angle limit in terms of angle adjustment, and the operation process is convenient and efficient, which overall improves the practicality, safety and convenience of endotracheal tube fixation and angle adjustment, and meets the use requirements in various clinical scenarios.

[0047] 1-stable plate; 2-fixing belt; 3-limiting mechanism; 31-center ring; 32-outer convex ring; 33-rolling groove; 34-screw hole; 35-stop column; 36-angle scale; 37-rotary head; 38-stud; 39-non-slip pad; 4-adjusting mechanism; 41-adjusting ball; 42-limiting groove; 43-non-slip rubber cylinder; 44-telescopic groove; 45-spring; 46-fixing seat; 47-limiting ball; 48-non-slip layer; 5-limiting mechanism; 51-limiting ring; 52-limiting rod, these components are all general standard components or components known to those skilled in the art, their structure and principle can be known by technical personnel through technical manual or through conventional experimental method, the problem solved by the present application is that the existing tracheal tube angle adjustable device can only be simply fixed and has poor stability, a few adjustable devices also have the problems of single adjustment mode (only single plane rough adjustment), low precision and complicated operation, which cannot meet the clinical diversified precise matching demand, and there are safety hazards and medical operation burden. The present application effectively improves the practicability, safety and convenience of tracheal tube fixation and angle adjustment, and meets the use demand in various clinical scenes.

[0048] The basic principles and main features of the present application and the advantages of the present application are shown and described above, and it is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0049] In addition, it should be understood that although the present application is described in the specification, each embodiment only contains one independent technical solution, and the description manner of the specification is only for clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. An adjustable endotracheal tube fixing angle device, characterized in that: It includes a stabilizing plate (1), a fixing strap (2), a limiting mechanism (3), an adjusting mechanism (4), and a restricting mechanism (5). The fixing strap (2) is located at the outer end of the stabilizing plate (1), the limiting mechanism (3) is located in the middle of the stabilizing plate (1), the adjusting mechanism (4) is located inside the limiting mechanism (3), and the restricting mechanism (5) is located on the adjusting mechanism (4). The limiting mechanism (3) includes a central ring (31), an outer convex ring (32), a groove (33), a screw hole (34), a stop (35), an angle scale (36), a rotating head (37), a screw (38), and an anti-slip pad (39). The central ring (31) is located in the middle of the stabilizing plate (1), the outer convex ring (32) is located at the front end of the central ring (31), the groove (33) is located in the inner ring of the central ring (31) and the outer convex ring (32), and the screw hole (34) is located in the middle of the stabilizing plate (1). 4) The outer convex ring (32) is uniformly and continuously disposed on the outer convex ring (32). The stop posts (35) are disposed opposite each other on the top of the front end of the outer convex ring (32). The angle scale (36) is disposed between the two stop posts (35). The rotating head (37) is disposed at the outer end of each screw hole (34). The stud (38) is disposed at the inner end of each rotating head (37) and located inside the screw hole (34). The anti-slip pad (39) is disposed at the inner end of each stud (38).

2. The adjustable endotracheal tube fixing angle device according to claim 1, characterized in that: The circumference of the outer convex ring (32) is smaller than that of the central ring (31), the thickness of the outer convex ring (32) in the front-to-back direction is greater than that of the central ring (31) in the front-to-back direction, the stop post (35) has a cylindrical structure, and the stabilizing plate (1), the central ring (31), the outer convex ring (32) and the stop post (35) are integrally formed.

3. The adjustable endotracheal tube fixing angle device according to claim 2, characterized in that: The groove (33) has a wheel-shaped structure that is concave in all directions and the vertical cross section of the groove (33) is arc-shaped. There is a gap between the front end and the rear end of the groove (33) and the outer convex ring (32). The two left and right stop posts (35) form a 20-degree angle with the center point of the front end of the outer convex ring (32). The angle scale (36) is distributed along the circumference of the front end of the outer convex ring (32) and has an overall arc-shaped structure. The angle scale (36) adopts an inward concave design.

4. The adjustable endotracheal tube fixing angle device according to claim 3, characterized in that: The circumference of the rotating head (37) is greater than the circumference of the stud (38), the circumference of the anti-slip pad (39) is less than the circumference of the stud (38), and the rotating head (37) and the stud (38) are integrally formed.

5. The adjustable endotracheal tube fixing angle device according to claim 4, characterized in that: The adjustment mechanism (4) includes an adjustment ball (41), a limiting groove (42), an anti-slip rubber sleeve (43), a telescopic groove (44), a spring (45), a fixed seat (46), a limiting ball (47), and an anti-slip layer (48). The adjustment ball (41) is disposed inside the rolling groove (33). The limiting groove (42) is disposed through the middle of the adjustment ball (41). The anti-slip rubber sleeve (43) is disposed inside the limiting groove (42) along the inner wall of the limiting groove (42). The telescopic groove (44) is evenly disposed inside the adjustment ball (41). The spring (45) is disposed inside each telescopic groove (44) and connected to the inner end of the telescopic groove (44). The fixed seat (46) is disposed at the outer end of each spring (45). The limiting ball (47) is disposed at the outer end of each fixed seat (46). The anti-slip layer (48) is disposed at the outer end of each limiting ball (47).

6. The adjustable endotracheal tube fixing angle device according to claim 5, characterized in that: The length of the adjusting ball (41) in the front-to-back direction is less than the length in the up-down direction. Each of the telescopic grooves (44) is located inside the adjusting ball (41) facing the center of the limiting groove (42). The telescopic grooves (44) are distributed in an upper-middle-lower structure on the left and right sides of the vertical center line of the limiting groove (42) and are opposite to each other. The included angle between each pair of adjacent telescopic grooves (44) is 45 degrees. Each pair of six telescopic grooves (44) opposite to each other is a group and each group is equidistant along the length of the limiting groove (42). There is a gap between the three left telescopic grooves (44) and the three right telescopic grooves (44) of each group so that the sleeve can pass through vertically. Each telescopic groove (44) simultaneously penetrates the anti-slip rubber tube (43) at the current position.

7. The adjustable endotracheal tube fixing angle device according to claim 8, characterized in that: The fixing seat (46) has a cylindrical structure. The lower half of the limiting ball (47) is located inside the fixing seat (46). The fixing seat (46) and the limiting ball (47) are integrally formed. The anti-slip layer (48) is located on the upper half of the limiting ball (47). When the spring (45) is relaxed, the anti-slip layer (48) is completely exposed inside the limiting groove (42), and the fixing seat (46) is also partially exposed inside the limiting groove (42).

8. The adjustable endotracheal tube fixing angle device according to claim 7, characterized in that: The transverse region in the middle of the adjusting ball (41) is located inside the groove (33), and the curved surface structure of the adjusting ball (41) matches the curved surface structure of the groove (33). The adjusting ball (41) can rotate smoothly inside the groove (33).

9. The adjustable endotracheal tube fixing angle device according to claim 8, characterized in that: The limiting mechanism (5) includes a limiting ring (51) and a limiting rod (52). The limiting ring (51) is disposed in the front half of the adjusting ball (41), and the limiting rod (52) is disposed on the top of the limiting ring (51).

10. The adjustable endotracheal tube fixing angle device according to claim 9, characterized in that: The limiting ring (51) has an isosceles trapezoidal structure when viewed from the side. The inner surface of the limiting ring (51) has an arc-shaped structure and matches the curved surface structure of the adjusting ball (41). The limiting rod (52) has a cylindrical structure and is located between the two left and right stops (35). The adjusting ball (41) can tilt in all directions of 360 degrees with the limiting ring (51) and the tilt angle is limited to within 15 degrees. The adjusting ball (41), the limiting ring (51) and the limiting rod (52) are integrally formed.

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