Nasal cannula springing device and method of springing a nasal cannula

Abstract

The present application relates to the technical field of nasal catheter production, and discloses a nasal catheter spring threading device and method, wherein the nasal catheter spring threading device comprises an assembling table, a spring limiting assembly, a cannula limiting assembly and a thin tube. The spring limiting assembly is used for bearing and supplying a plurality of springs to be installed. The cannula limiting assembly is arranged correspondingly with the spring limiting assembly and is used for fixing and expanding the end of the nasal catheter towards the spring limiting assembly. One end of the thin tube can be sequentially rotated and arranged in the inside of the nasal catheter and the spring to be installed along the longitudinal direction. A plurality of air bags are arranged on the thin tube along the longitudinal direction. The other end of the thin tube is communicated with an external air pressure device. Through the nasal catheter spring threading device, the problem that each nasal catheter needs to be expanded and fixed at the end during feeding and is prone to damage and deformation of the pipe opening to affect the production quality can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of nasal cannula manufacturing technology, specifically to a nasal cannula spring-piercing device and a nasal cannula spring-piercing method. Background Technology

[0002] Tongue displacement is a major cause of airway obstruction during moderate to deep sedation; nasal cannulas can effectively improve the effect of high-flux oxygen, significantly increase oxygen flow, avoid hypoxia caused by tongue displacement due to patient obesity during anesthesia, and greatly reduce the preparation time before anesthesia intubation.

[0003] The nasal cannula is extruded from a soft polymer material to facilitate insertion into narrow airways. An internal pressure-resistant coil spring is embedded, ensuring that the internal space remains unconstrained by external pressure during passage through narrow passages. Our company's nasal cannula is 160mm long, with an outer diameter of 4mm and an inner diameter of 2.5mm. While meeting oxygen supply requirements, its relatively thin outer diameter reduces the risk of airway damage to patients.

[0004] In related technologies, to facilitate the insertion of springs into nasal cannulas, for example, the prior art patent CN215386761U provides a semi-automatic spring insertion machine for nasal cannulas. This device, through the design of a spring fixing device, a tube rear end locking device and unloading device, a tube front end fixing device and a support claw device, etc., positions the tube by setting locking devices at both the front and rear ends of the cannula, thereby facilitating the insertion of springs into the cannula. In addition, the operator can transport the springs to be inserted through a spring temporary storage device, and pneumatically transport the springs through the inlet air chamber of the spring fixing device. The spring is blown into the insertion tube, and a spring limiting device is also provided. After the spring limiting block of the spring limiting device clamps the insertion tube, the insertion position of the spring is limited. The automatic insertion method of the machine makes the insertion position of the spring more accurate than that of manual insertion. The locking device at the rear end of the tube can be easily opened by driving the cylinder, and the fixing device at the front end of the tube can also be unloaded by the unloading device, so that the insertion tube with the spring inserted can be removed from the spring insertion machine. In the actual production process, the spring temporary storage device can be manually fed to carry out the entire production process. The automatic spring insertion method of the machine achieves higher production efficiency compared to manual insertion.

[0005] While the existing technical solutions described above can achieve the effect of blowing the spring into the nasal cannula for assembly by setting up a spring fixing device, a tube rear end locking device and a material unloading device, and a tube front end fixing device and a support claw device, each spring and nasal cannula needs to be fed separately for assembly. In particular, for the nasal cannula feeding, the operation of fixing the end of each nasal cannula is relatively troublesome. Moreover, when fixing the end, the tube opening needs to be opened by the support claw device to facilitate the smooth insertion of the spring. This process not only increases the complexity of the equipment but also prolongs the operation time. In addition, the support claw device is prone to damaging the tube wall when clamping the nasal cannula, thereby affecting the quality and safety of the product.

[0006] In view of this, we propose a nasal cannula spring-loaded device and method. Summary of the Invention

[0007] Technical problems to be solved In view of the above-mentioned shortcomings of the prior art, the present invention provides a nasal cannula spring-insertion device and a nasal cannula spring-insertion method, which can effectively solve the problem that in the prior art, each nasal cannula needs to be stretched and fixed at the end during feeding, which is cumbersome and easily causes damage and deformation to the cannula opening, thus affecting production quality.

[0008] Technical solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a nasal cannula spring-loaded device, comprising: Assembly station; A spring limiting assembly is installed on the assembly table; it is used to support and supply several springs to be installed. The intubation limiting component is set on the assembly table and is correspondingly set with the spring limiting component. It is used to fix the nasal cannula and expand it toward the end of the spring limiting component. A thin tube extends longitudinally; one end of the thin tube can be rotated longitudinally and passed through the inside of the nasal cannula and the spring to be installed; multiple airbags are arranged longitudinally at intervals on the thin tube; the other end of the thin tube is connected to an external pneumatic device. The assembly table is defined as having a length direction that is longitudinal, a width direction that is transverse, and a direction perpendicular to the plane containing the transverse and longitudinal axes that is vertical.

[0010] Furthermore, the spring limiting assembly includes: A support column is installed on top of the assembly platform. A spring groove plate extends longitudinally; the spring groove plate is provided with a strip-shaped groove for accommodating the spring. One end of the spring groove plate is rotatably connected to the top of the support column via a rotating shaft; the other end can rotate relative to the rotating shaft. Arc-shaped limiting plates are spaced apart along the longitudinal direction; one end of the arc-shaped limiting plate is movably connected to the spring groove plate, and the other end is connected to the assembly table; arc-shaped insertion holes are uniformly opened at the bottom of the spring groove plate and the arc-shaped limiting plates; the arc-shaped limiting plates are all concentrically arranged with the rotation shaft.

[0011] Furthermore, the cannulation limiting assembly includes: The cannula support plate extends longitudinally and is provided with a support groove for accommodating the nasal cannula. An end fixing component is disposed at one end of the cannula support plate near the spring groove plate, for fixing the end of the nasal cannula disposed on the cannula support plate, and for enlarging the end of the nasal cannula.

[0012] Furthermore, the cannulation limiting assembly also includes: A partition is provided at both ends of the bottom of the insertion tube bearing groove plate. An arc-shaped end plate is fixedly provided on the side of the partition plate near the spring groove plate. The arc-shaped end plate cooperates with the end of the spring groove plate. A ball head latch is slidably provided at one end of the spring groove plate near the arc-shaped end plate, and a spring A is fixedly provided on the inner side of the spring groove plate for applying elastic force to the ball head latch; The arc-shaped end plate has a strip groove and multiple spherical pin holes on the side near the spring groove plate, and the strip groove is located above the spherical pin holes; The spring groove plate has a push-pull rod rotatably mounted on one end near the ball head pin. A connecting block is fixedly mounted on the outside of the push-pull rod. The connecting block is located at the drive end of the electric push rod A. The electric push rod A is rotatably mounted on the top of the assembly table. The drive end of the electric push rod A is connected to the connecting block through a spring B.

[0013] Furthermore, the end fixing assembly includes: A retaining ring is fixedly installed at one end of the cannula bearing groove plate; A conical sleeve is rotatably disposed inside the fixing ring. The inner diameter of the conical sleeve is greater than or equal to the inner diameter of the nasal cannula, and the outer periphery of the conical sleeve has a conical structure. A fixed sleeve is fitted on the outside of the tapered sleeve. The fixed sleeve is slidably mounted on the insertion tube bearing groove plate driven by external force. A receiving groove is opened on the inner side of the insertion tube bearing groove plate corresponding to the fixed sleeve.

[0014] Furthermore, it also includes: a cutting component, located outside the cannula limiting component, used to cut the nasal cannula into segments after several springs have been inserted inside; Furthermore, the cutting assembly includes: A rotating rod is rotatably mounted on the outside of the cannula support groove plate. Blades are fixedly mounted at equal intervals on the outside of the rotating rod. The rotating rod is driven by an external force to rotate the blades to the outside of the nasal cannula. The blades are located between two adjacent springs to be installed, and one of the blades is provided with a corresponding end fixing component.

[0015] Furthermore, a discharge port is provided on the inner side of the insertion tube bearing groove plate between the receiving groove and the fixing ring; The partition and the arc-shaped end plate form a discharge channel that communicates with the discharge port, which is used to discharge waste material after the nasal cannula fixing end is cut off.

[0016] Furthermore, a vertical sliding groove is provided at the bottom of the inner side of the cannula support groove plate corresponding to each segment of the nasal cannula. The vertical sliding groove is located on one side of the partition plate. An arc-shaped groove plate is slidably provided on the inner side of the vertical sliding groove. The arc-shaped groove plate cooperates with the inner side of the cannula support groove plate. The arc-shaped groove plate is driven to move up and down by external force. A guide plate is fixedly installed on the side of the partition away from the cutting component to guide the unloading of the assembled nasal cannula.

[0017] Furthermore, a sleeve is fixedly provided on the outside of the thin tube at the cut point of the nasal cannula, and the outer diameter of the sleeve is smaller than the inner diameter of the nasal cannula; A swing arm is fixedly provided at one end of the rotating rod. A straight sliding hole is provided on the inner side of the swing arm. A sliding pin is slidably provided on the inner side of the straight sliding hole. A connecting seat is fixedly provided on the outer side of the sliding pin. The connecting seat is located at the drive end of the electric push rod D, which is fixedly mounted on the top of the assembly table. The drive end of the electric push rod D is connected to the connecting seat via a spring C.

[0018] Furthermore, it also includes: a drive assembly, disposed on the side of the cannula limiting assembly away from the spring limiting assembly, for driving the thin tube to slide and rotate; The drive assembly includes a lead screw, a bearing plate rotatably mounted at one end of the lead screw, the bearing plate being fixedly mounted on the outside of the guide rail, the guide rail being fixedly mounted on the top of the assembly table, a slide block being threadedly connected to the outside of the lead screw, the slide block being slidably mounted on the top of the guide rail, and a thin tube being rotatably mounted on the inside of the slide block; An air guide tube is fixedly installed on the side of the slide away from the thin tube. The air guide tube is rotatable and sealed to one end of the thin tube. A motor A for driving the thin tube to rotate is fixedly installed on the outside of the slide. The assembly platform is fixedly equipped with a device housing on its top. Inside the device housing, a motor B for driving the lead screw to rotate and a suction device for connecting the air guide tube are fixedly installed.

[0019] This invention also provides a method for perforating a nasal cannula spring, using any of the nasal cannula spring-perforating devices described above, comprising the following steps: Several springs to be installed are supported and limited by spring limiting components; Place the nasal cannula in the intubation limiting assembly, secure the intubation limiting assembly, and expand the nasal cannula toward the end of the spring limiting assembly. The thin tube is inserted horizontally along the longitudinal direction into the nasal cannula and the spring to be installed; After the thin tube is inserted into place, the external pneumatic device injects gas into the thin tube, causing the air bladder on the outside of the thin tube to expand and squeeze and clamp the spring to be installed. The thin tube moves the spring to be installed into the nasal cannula, so that the spring to be installed can be inserted into the nasal cannula. After depressurization, the thin tube is withdrawn from inside the nasal cannula.

[0020] Beneficial effects

[0021] The technical solution provided by this invention has the following advantages compared with the prior art: (1) The present invention positions and places several springs to be installed by setting a spring limiting component, and then positions and fixes a longer nasal cannula by inserting a tube limiting component. Then the thin tube moves horizontally along the longitudinal direction and is inserted into the nasal cannula and the springs to be installed in sequence. When the air bladder on the outside of the thin tube expands, it can increase the resistance between the thin tube and the springs to be installed. When the driving component drives the thin tube to slide in the opposite direction, the thin tube can drive the springs to be installed to move into the nasal cannula through the air bladder. Several springs to be installed can be quickly inserted into the nasal cannula. Then the cutting component is used to cut the nasal cannula evenly, which achieves the effect of producing several nasal cannula components in one fixing operation. While ensuring production efficiency, the number of nasal cannula disassembly and assembly operations is reduced.

[0022] (2) Through the cooperation of the spring limiting assembly, the cannula limiting assembly and the cannula and other structures in this application, the nasal cannula is first fixed by the cannula limiting assembly and the cannula opening is expanded, which greatly reduces the damage to the cannula wall that is easy to cause when using the nasal cannula, and greatly improves the quality and pass rate of the product. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 2 This is a partial structural diagram of an embodiment of the present invention; Figure 3 This is a front view schematic diagram of the spring limiting assembly and the insertion tube limiting assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the cannula limiting assembly according to an embodiment of the present invention; Figure 5 This is an exploded structural diagram of the cannula limiting assembly according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the cannula limiting assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the spring limiting assembly according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the thin tube structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the cutting component according to an embodiment of the present invention; Figure 10 for Figure 1 Enlarged structural diagram at point A; Figure 11 for Figure 5 A magnified structural diagram at point B in the middle.

[0025] The numbers in the diagram represent: 100, spring to be installed; 200, nasal cannula; 1. Assembly table; 11. Device housing; 12. Gas duct; 13. Control module; 2. Spring limiting assembly; 21. Spring groove plate; 22. Rotating shaft; 23. Support column; 24. Arc-shaped insertion hole; 25. Arc-shaped limiting plate; 26. Electric push rod A; 27. Push-pull rod; 28. Ball head pin; 29. ​​Spring A; 210. Connecting block; 211. Spring B; 3. Insertion tube limiting assembly; 31. Insertion tube bearing groove plate; 32. End fixing assembly; 321. Fixing ring; 322. Conical tube sleeve; 323. Fixing tube sleeve; 324. Electric push rod B; 33. Partition plate; 34. Vertical slide groove; 35. Arc-shaped groove plate; 36. Vertical sliding plate; 37. Connecting plate; 38. Electric push rod C; 39. Guide plate; 310. Side plate; 311. Arc-shaped end plate; 312. Strip groove; 313. Spherical pin hole; 314. Limiting block; 315. Receiving groove; 316. Discharge port; 317. Discharge channel; 4. Thin tube; 41. Airbag; 42. Sleeve; 43. Gear A; 5. Drive assembly; 51. Lead screw; 52. Bearing plate; 53. Guide rail; 54. Slide; 55. Gear B; 56. Fixing plate; 57. Motor A; 58. Toothed pulley; 59. Toothed belt; 6. Cutting assembly; 61. Rotating rod; 62. Tool holder; 63. Blade; 64. Electric push rod D; 65. Swing arm; 66. Straight sliding hole; 67. Sliding pin; 68. Connecting seat; 69. Spring C. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] The present invention will be further described below with reference to embodiments.

[0028] Please see Figures 1-10 The present invention provides a nasal cannula spring-loaded device, including an assembly platform 1, a spring limiting assembly 2, an insertion cannula limiting assembly 3, and a thin tube 4.

[0029] The assembly platform 1 is defined as having a longitudinal direction in length, a transverse direction in width, and a vertical direction perpendicular to the plane containing both the longitudinal and transverse directions. The extension direction of the thin tube 4 is the same as the longitudinal direction.

[0030] Specifically, the spring limiting assembly 2 is disposed on the assembly table 1; it is used to support and supply several springs 100 to be installed. The cannula limiting component 3 is disposed on the assembly table 1 and is disposed corresponding to the spring limiting component 2. It is used to fix and expand the nasal cannula 200 toward the end of the spring limiting component 2. A thin tube 4 extends longitudinally; one end of the thin tube 4 can be rotated longitudinally and passed through the inner side of the nasal cannula 200 and the spring 100 to be installed; multiple airbags 41 are arranged longitudinally at intervals on the thin tube 4; the other end of the thin tube 4 is connected to an external pneumatic device.

[0031] In a preferred embodiment, a driving component 5 and a cutting component 6 may also be provided; the driving component 5 is located on the side of the insertion tube limiting component 3 away from the spring limiting component 2, and is used to drive the thin tube 4 to slide and rotate; the cutting component 6 is located on the outside of the insertion tube limiting component 3, and is used to cut the nasal cannula 200, which has several springs 100 inserted inside, into segments.

[0032] In practice, several springs 100 to be installed are positioned and placed by the spring limiting assembly 2, and the longer nasal cannula 200 is positioned and fixed by the cannula limiting assembly 3. Then, the thin tube 4 is driven to move horizontally by the driving assembly 5 and is inserted into the nasal cannula 200 and the springs 100 to be installed in sequence. At this time, the air bladder 41 on the outside of the thin tube 4 is in a contracted state to ensure that the thin tube 4 can be inserted smoothly.

[0033] Then, through the external air pressure device of the thin tube 4, gas is fully injected into the inside of the thin tube 4, causing the airbag 41 to expand inside the spring 100 to increase the resistance between the thin tube 4 and the spring 100. When the drive assembly 5 drives the thin tube 4 to slide in the opposite direction, the thin tube 4 can drive the spring 100 to move into the nasal cannula 200 through the airbag 41, so that several springs 100 can be quickly inserted into the inside of the nasal cannula 200.

[0034] Then, the nasal cannula 200 is evenly cut by the cutting component 6, which achieves the effect of producing several nasal cannula components in one fixed operation of the nasal cannula 200.

[0035] In actual use, each spring limiting component 2, insertion tube limiting component 3, thin tube 4, drive component 5 and cutting component 6 forms an assembly line. Two assembly lines can be set on the top of the assembly table 1 for alternating use to ensure production efficiency.

[0036] Based on the above scheme, the spring limiting assembly 2 includes a spring groove plate 21, a support column 23, a rotating shaft 22, and an arc-shaped limiting plate 25.

[0037] The support column 23 is located on the top of the assembly platform 1. The spring groove plate 21 extends in the longitudinal direction; the spring groove plate 21 is provided with a strip-shaped groove for accommodating the spring 100; one end of the spring groove plate 21 is rotatably connected to the top end of the support column 23 through a rotating shaft 22; the other end can rotate relative to the rotating shaft 22. Arc-shaped limiting plates 25 are spaced longitudinally; one end of each arc-shaped limiting plate 25 is movably connected to the spring groove plate 21, and the other end is connected to the assembly table 1; arc-shaped insertion holes 24 are evenly provided at the bottom of the spring groove plate 21 and the arc-shaped limiting plates 25; the arc-shaped limiting plates 25 are all concentrically arranged with the rotating shaft 22. During implementation, the spring groove plate 21 is driven by external force to rotate downwards and tilt around the rotating shaft 22.

[0038] Specifically, when loading the spring 100, in order to facilitate the positioning of the spring 100, the spring 100 can be pre-placed (located on both sides of the arc-shaped insertion hole 24) inside the spring slot plate 21. Then, by driving the spring slot plate 21 to rotate around the rotating shaft 22, one end of the spring slot plate 21 is tilted downward. At this time, a part of the spring slot plate 21 gradually slides to the outside of the arc-shaped limiting plate 25, so that the top of the arc-shaped limiting plate 25 passes through the spring slot plate 21. When the spring slot plate 21 is tilted to a certain extent, the spring 100 moves along the tilt direction to the outside of the arc-shaped limiting plate 25, and then each spring 100 is positioned by the arc-shaped limiting plate 25. Then, the spring slot plate 21 is rotated upward to a horizontal state to wait for assembly, so as to facilitate the positioning and loading of several springs 100.

[0039] Based on the above solution, this application provides a specific implementation of the intubation limiting component 3, which includes an intubation carrying groove plate 31 and an end fixing component 32.

[0040] Specifically, the cannula support plate 31 extends in the longitudinal direction and is provided with a support groove for accommodating the nasal cannula 200; The end fixing component 32 is disposed at one end of the cannula support groove plate 31 near the spring groove plate 21, for fixing the end of the nasal cannula 200 disposed on the cannula support groove plate 31, and for enlarging the end of the nasal cannula 200.

[0041] Based on the above scheme, the cannula limiting assembly 3 also includes a partition 33.

[0042] Specifically, the partition 33 is disposed at both ends of the bottom of the insertion tube bearing groove plate 31, and an arc-shaped end plate 311 is fixedly disposed on the side of the partition 33 near the spring groove plate 21, and the arc-shaped end plate 311 cooperates with the end of the spring groove plate 21. A ball head pin 28 is slidably provided at one end of the spring groove plate 21 near the arc-shaped end plate 311, and a spring A29 for applying elastic force to the ball head pin 28 is fixedly provided on the inner side of the spring groove plate 21. The arc-shaped end plate 311 has a strip groove 312 and a plurality of spherical pin holes 313 on the side near the spring groove plate 21, and the strip groove 312 is located above the spherical pin holes 313. Among them, a push-pull rod 27 is rotatably provided at one end of the spring groove plate 21 near the ball head pin 28, and a connecting block 210 is fixedly provided on the outside of the push-pull rod 27. The connecting block 210 is provided at the driving end of the electric push rod A26, which is rotatably provided on the top of the assembly table 1. The driving end of the electric push rod A26 is connected to the connecting block 210 through spring B211.

[0043] During implementation, due to the large resistance between the inner side of the spring groove plate 21 and the contact surface of the spring to be installed 100, and the small mass of the spring to be installed 100, when the spring groove plate 21 is tilted, the spring to be installed 100 may get stuck or be unable to move closer to the arc-shaped limiting plate 25, resulting in an unstable positioning process of the spring to be installed 100.

[0044] In view of this, a ball head latch 28 is slidably provided at one end of the spring groove plate 21 near the arc-shaped end plate 311, and a spring A29 for applying elastic force to the ball head latch 28 is fixedly provided on the inner side of the spring groove plate 21; a strip groove 312 and a spherical pin hole 313 are provided on one side of the arc-shaped end plate 311 near the spring groove plate 21, the strip groove 312 is located above the spherical pin hole 313, and several spherical pin holes 313 are provided; a limit block 314 is fixedly provided on the top of the arc-shaped end plate 311; a push-pull rod 27 is rotatably provided at one end of the spring groove plate 21 near the ball head latch 28, and a connecting block 210 is fixedly provided on the outer side of the push-pull rod 27. The connecting block 210 is provided at the driving end of the electric push rod A26, the electric push rod A26 is rotatably provided on the top of the assembly table 1, and the driving end of the electric push rod A26 is connected to the connecting block 210 through the spring B211.

[0045] When the spring slot plate 21 begins to tilt, the connecting block 210 is driven to move downward by the electric push rod A26 at the top of the assembly table 1. The connecting block 210 pulls the spring slot plate 21 to rotate through the push-pull rod 27. At this time, the ball head pin 28 at the end of the spring slot plate 21 is located inside the strip groove 312, which can ensure that the spring slot plate 21 tilts downward at a certain angle, so that the arc-shaped limiting plate 25 passes through the bottom of the spring slot plate 21 to block the spring 100 to be installed.

[0046] When the ball head latch 28 moves to the bottom of the strip groove 312, the rotation of the spring groove plate 21 will be blocked by the engagement of the ball head latch 28 with the strip groove 312. At this time, the spring B211 at the output end of the electric push rod A26 is stretched to a certain extent. When the ball head latch 28 squeezes the spring A29 to disengage from the strip groove 312, the spring groove plate 21 can be rapidly rotated downward under the pulling force of the spring B211. When the ball head latch 28 falls into the inner side of the spherical pin hole 313, it will be stuck. The collision caused by the stuck movement will cause the spring 100 to be installed inside the spring groove plate 21 to vibrate. Then, as the ball head latch 28 passes through several spherical pin holes 313, the spring 100 to be installed can be moved to the outer side of the arc-shaped limiting plate 25 for positioning.

[0047] Based on the above solution, the end fixing component 32 of this application embodiment includes a fixing ring 321, a tapered tube sleeve 322, and a fixing tube sleeve 323.

[0048] A fixing ring 321 is fixedly mounted at one end of the cannula bearing groove plate 31, and a tapered sleeve 322 is rotatably mounted inside the fixing ring 321. The inner diameter of the tapered sleeve 322 is greater than or equal to the inner diameter of the nasal cannula 200, and the outer periphery of the tapered sleeve 322 has a tapered structure. The fixed sleeve 323 is fitted to the outside of the tapered sleeve 322. Specifically, the fixed sleeve 323 is composed of two mutually rotating collars; the inner side of the insertion tube bearing groove plate 31 is provided with a receiving groove 315 corresponding to the fixed sleeve 323.

[0049] During implementation, an electric push rod B324 is also fixedly installed on the outside of the partition 33, and the fixed tube sleeve 323 is slidably installed on the inside of the tube support groove plate 31 by the electric push rod B324.

[0050] When feeding the nasal cannula 200, one end of the nasal cannula 200 is passed through the fixed sleeve 323 and then put on the outside of the conical sleeve 322. The end of the nasal cannula 200 is expanded by the conical structure at the end of the conical sleeve 322.

[0051] As the nasal cannula 200 is pinched and pushed tightly towards the conical sleeve 322 by hand, the fixed sleeve 323 is then driven by the electric push rod B324 to move outward of the conical sleeve 322, finally fixing the end of the nasal cannula 200 to the outside of the conical sleeve 322.

[0052] Specifically, since the inner diameter of the tapered sleeve 322 is not less than the inner diameter of the nasal cannula 200, the thin tube 4 can pass smoothly through the nasal cannula 200, and then the rest of the nasal cannula 200 can be placed along the inner side of the insertion support groove plate 31.

[0053] Based on the above scheme, the cutting assembly 6 of this application includes a rotating rod 61 rotatably disposed on the outside of the cannula bearing groove plate 31. Blades 63 are fixedly disposed at equal intervals on the outside of the rotating rod 61 through the blade holder 62. The rotating rod 61 is driven by external force to rotate the blades 63 to the outside of the nasal cannula 200. The blades 63 are located between two adjacent springs 100 to be installed, and one of the blades 63 is disposed corresponding to the end fixing assembly 32.

[0054] Specifically, a sleeve 42 is fixedly installed on the outer side of the thin tube 4 at the cut end of the nasal cannula 200. The outer diameter of the sleeve 42 is smaller than the inner diameter of the nasal cannula 200. A swing arm 65 is fixedly installed at one end of the rotating rod 61. A straight sliding hole 66 is opened on the inner side of the swing arm 65. A sliding pin 67 is slidably installed on the inner side of the straight sliding hole 66. A connecting seat 68 is fixedly installed on the outer side of the sliding pin 67. The connecting seat 68 is located at the driving end of the electric push rod D64. The electric push rod D64 is fixedly installed on the top of the assembly table 1. The driving end of the electric push rod D64 is connected to the connecting seat 68 through a spring C69.

[0055] During implementation, when the nasal cannula 200 with the internally assembled spring 100 is cut, the electric push rod D64 pushes the sliding pin 67 to move upward, causing the sliding pin 67 to push the swing arm 65 to rotate upward, thereby driving the blade 63 on the outside of the rotating rod 61 to move closer to the nasal cannula 200. When the blade 63 is located on the outside of the nasal cannula 200, the electric push rod D64 continues to push the swing arm 65 to compress the spring C69, thereby achieving elastic pressure on the blade 63. At this time, the drive assembly 5 drives the thin tube 4 to rotate, so that the thin tube 4 can rotate as a whole with the nasal cannula 200 and the spring 100 to be installed through the interference fit between the airbag 41 and the nasal cannula 200.

[0056] During rotation, the blade 63 applies pressure to the side wall of the nasal cannula 200 to cut it. The side wall of the nasal cannula 200 will stick to the outside of the sleeve 42, reducing the deformation of the side wall when the nasal cannula 200 is squeezed during cutting, so as to ensure the production quality of the nasal cannula end.

[0057] Based on the above scheme, a discharge port 316 is provided on the inner side of the insertion tube bearing groove plate 31 between the receiving groove 315 and the fixing ring 321. A discharge channel 317 is formed between the partition plate 33 and the arc-shaped end plate 311, which is connected to the discharge port 316 and is used to discharge waste after the fixed end of the nasal cannula 200 is cut off.

[0058] When the nasal cannula 200 is cut by the cutting component 6, the fixed end of the nasal cannula 200 will be cut off simultaneously due to the deformation caused by compression. After the cut waste material is reset to the inside of the receiving groove 315 by the fixed sleeve 323, it falls into the inside of the feeding channel 317 through the feeding port 316 and is finally discharged from the inside of the insertion tube bearing groove plate 31 to facilitate the cleaning of the cutting waste material.

[0059] Specifically, a vertical sliding groove 34 is provided on the bottom inner side of the cannula support plate 31 for each segment of the nasal cannula 200. The vertical sliding groove 34 is located on one side of the partition plate 33. An arc-shaped groove plate 35 is slidably arranged on the inner side of the vertical sliding groove 34. The arc-shaped groove plate 35 cooperates with the inner side of the cannula support plate 31. A vertical sliding plate 36 is fixedly arranged at the bottom of the arc-shaped groove plate 35. A connecting plate 37 is fixedly arranged at the bottom of the vertical sliding plate 36. An electric push rod C38 is fixedly arranged at the bottom of the connecting plate 37. The electric push rod C38 is fixedly arranged on the outer side of the partition plate 33. A guide plate 39 is fixedly arranged on the side of the partition plate 33 away from the cutting component 6 to guide the unloading of the assembled nasal cannula 200. A side plate 310 is fixedly arranged on the side of the partition plate 33 away from the guide plate 39.

[0060] During implementation, after the nasal cannula 200 is cut into multiple segments, in order to facilitate the unloading of the nasal cannula 200, the connecting plate 37 is driven to move up and down by the electric push rod C38. The connecting plate 37 pushes the arc-shaped groove plate 35 upward through the vertical slide plate 36, which in turn pushes the nasal cannula 200 to move outward of the insertion tube bearing groove plate 31. Under the guidance of the arc-shaped groove plate 35, the nasal cannula 200 can fall to the side where the guide plate 39 is located. The nasal cannula 200 is cut and guided by the guide plate 39 for unloading.

[0061] Specifically, the drive assembly 5 includes a lead screw 51, with a bearing plate 52 rotatably mounted at one end of the lead screw 51. The bearing plate 52 is fixedly mounted on the outside of the guide rail 53, which is fixedly mounted on the top of the assembly table 1. A slide block 54 is threadedly connected to the outside of the lead screw 51. The slide block 54 is slidably mounted on the top of the guide rail 53. A thin tube 4 is rotatably mounted on the inside of the slide block 54. An air guide tube 12 is fixedly mounted on the side of the slide block 54 away from the thin tube 4. The air guide tube 12 and one end of the thin tube 4 are rotatably and sealed together.

[0062] During implementation, a motor A57 for driving the thin tube 4 to rotate is fixedly installed on the outside of the slide 54. A device housing 11 is fixedly installed on the top of the assembly table 1. A motor B for driving the lead screw 51 to rotate and a suction device for connecting the air guide tube 12 are fixedly installed inside the device housing 11. A control module 13 is fixedly installed on the outside of the device housing 11 for the operator to control the operation of the equipment.

[0063] Specifically, a gear A43 is fixedly installed on the outside of the thin tube 4, and a gear B55 is rotatably installed on one side of the slide 54. The gear B55 is meshed on the outside of the gear A43. Toothed pulleys 58 are fixedly installed at the end of the gear B55 and the drive end of the motor A57. The toothed pulleys 58 are linked together by a toothed belt 59. The motor A57 is fixedly installed on the outside of the slide 54 by a fixing plate 56.

[0064] This application also provides a method for perforating a nasal cannula spring, including the following steps: (1) Several springs 100 to be installed are supported and limited by spring limiting assembly 2; (2) Place the nasal cannula 200 in the cannula limiting assembly 3, fix the cannula limiting assembly 3 and expand the nasal cannula 200 toward the end of the spring limiting assembly 2; (3) The thin tube 4 is inserted horizontally along the longitudinal direction into the nasal cannula 200 and the spring to be installed 100; (4) After the thin tube 4 is inserted into place, the external pneumatic device injects gas into the thin tube 4, causing the air bladder 41 on the outside of the thin tube 4 to expand and squeeze and clamp the spring 100 to be installed. (5) The thin tube 4 drives the spring to be installed 100 to move into the nasal cannula 200 so that the spring to be installed 100 is inserted into the nasal cannula 200. (6) After depressurization, the thin tube 4 is pulled out from inside the nasal cannula 200.

[0065] Based on the above scheme, when inserting the thin tube 4, the operator controls the motor B inside the outer shell 11 of the device through the control module 13, so that the motor B drives the lead screw 51 to rotate, and the lead screw 51 drives the slide 54 to slide along the guide rail 53. The slide 54 drives the thin tube 4 to be inserted horizontally into the nasal cannula 200 and the spring to be installed 100 in sequence. After the thin tube 4 is inserted into place, gas is injected into the thin tube 4 through the suction device inside the outer shell 11 of the device, so that the air bladder 41 on the outside of the thin tube 4 expands and squeezes and clamps the spring to be installed 100.

[0066] Specifically, after the thin tube 4 drives the spring 100 to be installed inside the nasal cannula 200, the toothed pulley 58 at the output end is driven to rotate by the control motor A57, so that the toothed pulley 58 at the drive end drives the toothed pulley 58 at the end of the gear B55 to rotate synchronously through the toothed belt 59, and then the gear B55 drives the thin tube 4 to rotate through the gear A43.

[0067] During the rotation process, the thin tube 4, together with the cutting component 6, can divide the nasal cannula 200. After division, the gas inside the thin tube 4 is extracted by the suction device inside the outer shell 11 of the device, causing the airbag 41 to contract and release the limiting position of the spring 100 to be installed and the nasal cannula 200. At this time, the slide 54 can be driven to move backward by the lead screw 51 until the slide 54 drives the thin tube 4 to detach from the inside of the nasal cannula 200.

[0068] The principle and advantages of the nasal cannula spring device: First, several springs 100 to be installed are supported and limited by the spring limiting assembly 2 to ensure that the distance between each spring 100 is equal. Then, the nasal cannula 200 is placed inside the cannula support plate 31. Next, one end of the nasal cannula 200 is passed through the fixing sleeve 323 and then fitted onto the outside of the conical sleeve 322. The conical structure at the end of the conical sleeve 322 expands the end of the nasal cannula 200. As the nasal cannula 200 is squeezed and pushed tightly into the conical sleeve 322 by hand, the fixing sleeve 323 is moved outward by the electric push rod B324, finally fixing the end of the nasal cannula 200 to the outside of the conical sleeve 322. Afterward, the motor B inside the device housing 11 drives the lead screw 51 to rotate, and the lead screw 51 drives the slide 54 to slide along the guide rail 53. The slide 54 drives the thin tube 4 to be horizontally inserted into the nasal cannula 200 and the spring 100 to be installed in sequence. After the thin tube 4 is inserted into place, gas is injected into the thin tube 4 through the suction device inside the outer shell 11 of the device, causing the airbag 41 on the outside of the thin tube 4 to expand and squeeze and clamp the spring 100 to be installed. Then, the motor B drives the lead screw 51 to reverse, causing the lead screw 51 to drive the slide 54 to move in the opposite direction and reset. In turn, the slide 54 drives the spring 100 to be installed on the outside of the thin tube 4 to move into the nasal cannula 200. When the airbag 41 enters the nasal cannula 200 after expansion, it is in an interference fit with the nasal cannula 200, so that the airbag 41 and the inner wall of the nasal cannula 200 have a certain resistance. This resistance is much smaller than the holding force of the end fixing component 32, so as to ensure that the airbag 41 enters the nasal cannula 200 under the interference fit. Finally, by controlling motor A57 to drive the toothed pulley 58 at the output end to rotate, the toothed pulley 58 at the drive end drives the toothed pulley 58 at the end of gear B55 to rotate synchronously via toothed belt 59. This causes gear B55 to drive the thin tube 4 to rotate via gear A43. At this time, electric push rod D64 pushes sliding pin 67 upward, causing sliding pin 67 to push swing arm 65 upward, thereby causing the blade 63 on the outside of rotating rod 61 to move closer to nasal cannula 200. When blade 63 is located outside nasal cannula 200, electric push rod D64... 4. Continue to push the swing arm 65 to compress the spring C69, thereby applying elastic pressure to the blade 63. Since the thin tube 4 is in a rotating state, the thin tube 4 can drive the nasal cannula 200 and the spring 100 to be installed to rotate as a whole through the interference fit between the air bag 41 and the nasal cannula 200. During the rotation, the blade 63 applies pressure to the side wall of the nasal cannula 200 to cut it. The side wall of the nasal cannula 200 will stick to the outside of the sleeve 42, reducing the deformation of the side wall when the nasal cannula 200 is squeezed during cutting. Finally, the nasal cannula 200 is cut into multiple finished products.

[0069] Its advantages are that several springs 100 to be installed are positioned and placed by the spring limiting component 2, and the longer nasal cannula 200 is positioned and fixed by the insertion limiting component 3. Then, the thin tube 4 is driven to move horizontally by the driving component 5 and is inserted into the nasal cannula 200 and the springs 100 to be installed in sequence. When the air bladder 41 on the outside of the thin tube 4 expands, it can increase the resistance between the thin tube 4 and the springs 100 to be installed. When the driving component 5 drives the thin tube 4 to slide in the opposite direction, the thin tube 4 can drive the springs 100 to be installed to move into the nasal cannula 200 through the air bladder 41. Several springs 100 to be installed can be quickly inserted into the nasal cannula 200. Then, the nasal cannula 200 is cut evenly by the cutting component 6. This achieves the effect of producing several nasal cannula components in one fixing operation of the nasal cannula 200. While ensuring production efficiency, it reduces the number of disassembly and assembly operations of the nasal cannula 200.

[0070] In use, the spring limiting assembly 2 in the nasal cannula spring-penetrating device of this application firstly drives the connecting block 210 downward by the electric push rod A26 on the top of the assembly table 1, causing the connecting block 210 to pull the spring groove plate 21 to rotate via the push-pull rod 27. At this time, the ball head locking pin 28 at the end of the spring groove plate 21 is located inside the strip groove 312, which can ensure that the spring groove plate 21 tilts downward at a certain angle, so that the arc-shaped limiting plate 25 passes through the bottom of the spring groove plate 21 to block the spring 100 to be installed. When the ball head locking pin 28 moves to the bottom of the strip groove 312, the rotation of the spring groove plate 21 will be stopped by the ball head locking pin 28. When the engagement with the slot 312 is blocked, the spring B211 at the output end of the electric push rod A26 is stretched to a certain extent. When the ball head pin 28 squeezes the spring A29 to disengage from the slot 312, the spring slot plate 21 can be rotated downward rapidly under the tension of the spring B211. When the ball head pin 28 falls into the inner side of the spherical pin hole 313, it is stuck. The collision caused by the stuck movement causes the spring 100 to be installed inside the spring slot plate 21 to vibrate. Then, as the ball head pin 28 passes through several spherical pin holes 313, the spring 100 to be installed can be moved to the outer side of the arc-shaped limiting plate 25 for positioning.

[0071] It is worth noting that the above positioning method has the following advantages: One advantage is that the spring 100 to be installed can be positioned by rotating the spring slot plate 21. After the spring 100 to be installed is pre-placed inside the spring slot plate 21, the spring 100 to be installed can be positioned by tilting the spring slot plate 21 downwards, making the operation more convenient.

[0072] Secondly, by setting several arc-shaped limiting plates 25 on the outside of the support column 23, and the arc-shaped limiting plates 25 are concentrically set with the rotating shaft 22, when the spring groove plate 21 is in a horizontal state, the top of the arc-shaped limiting plates 25 is hidden inside the arc-shaped insertion hole 24, so as to ensure that the spring to be installed 100 is pulled into the nasal cannula 200 after being clamped by the thin tube 4. When the spring groove plate 21 is tilted, the end of the arc-shaped limiting plate 25 located inside the arc-shaped insertion hole 24 gradually protrudes to block the spring to be installed 100, and is used to position the spring to be installed 100.

[0073] Thirdly, by setting a ball head pin 28 at the end of the spring groove plate 21, the ball head pin 28 can be driven through the spherical pin hole 313 on the outside of the arc end plate 311 during the rotation of the spring groove plate 21. The vibration generated by continuous jamming makes the spring 100 to be installed move more smoothly downward, so as to ensure the stability of the automatic positioning of the spring 100 to be installed.

[0074] Fourthly, by setting a strip groove 312 on the outer side of the arc-shaped end plate 311, and the strip groove 312 being located above the spherical pin hole 313, the spring groove plate 21 can drive the ball head locking pin 28 to move inside the strip groove 312 when it first rotates. At this time, the spring groove plate 21 will not vibrate when it rotates. As the ball head locking pin 28 approaches the bottom of the strip groove 312, the arc-shaped limiting plate 25 located inside the arc-shaped insertion hole 24 is exposed, thus blocking the spring 100 to be installed. Conversely, it can maintain the stability of the spring 100 to be installed before the spring groove plate 21 rotates upward to reset, preventing the spring 100 to be installed from vibrating and shifting at the moment it is in a horizontal state.

[0075] In practical applications, the feeding method after the nasal cannula is divided into 200 parts is as follows: The connecting plate 37 is driven to move up and down by the electric push rod C38, so that the connecting plate 37 pushes the arc-shaped groove plate 35 upward through the vertical slide plate 36, and then the arc-shaped groove plate 35 pushes the nasal cannula 200 to move outward of the insertion tube support groove plate 31. Under the guidance of the arc-shaped groove plate 35, the nasal cannula 200 can fall to the side where the guide plate 39 is located. The guide plate 39 cuts the nasal cannula 200 and guides it for unloading.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A nasal cannula spring-loaded device, characterized in that, include: Assembly station (1); A spring limiting assembly (2) is provided on the assembly table (1); it is used to support and supply several springs (100) to be installed. The cannula limiting assembly (3) is set on the assembly table (1) and is correspondingly set with the spring limiting assembly (2) for fixing and expanding the nasal cannula (200) toward the end of the spring limiting assembly (2); A thin tube (4) extends longitudinally; one end of the thin tube (4) can be rotated longitudinally and passed through the inner side of the nasal cannula (200) and the spring (100) to be installed; multiple airbags (41) are arranged longitudinally at intervals on the thin tube (4); the other end of the thin tube (4) is connected to an external air pressure device. The cannulation limiting component (3) includes: The cannula support plate (31) extends in the longitudinal direction; it is provided with a support groove for accommodating the nasal cannula (200); An end fixing component (32) is disposed at one end of the cannula support groove plate (31) near the spring groove plate (21) for fixing the end of the nasal cannula (200) disposed on the cannula support groove plate (31) and for enlarging the end of the nasal cannula (200). The cutting component (6) is located outside the insertion limiting component (3) and is used to cut the nasal cannula (200) into segments after several springs (100) have been inserted inside. The cutting component (6) includes: A rotating rod (61) is rotatably disposed on the outside of the cannula bearing groove plate (31). Blades (63) are fixedly disposed at equal intervals on the outside of the rotating rod (61). The rotating rod (61) is driven by an external force to rotate the blades (63) to the outside of the nasal cannula (200). The blades (63) are located between two adjacent springs (100) to be installed, and one of the blades (63) is disposed corresponding to the end fixing component (32). The assembly table (1) is defined as having a longitudinal direction in length, a transverse direction in width, and a vertical direction perpendicular to the plane containing the transverse and longitudinal directions.

2. The nasal cannula spring-loaded device according to claim 1, characterized in that, The spring limiting assembly (2) includes: A support column (23) is provided on top of the assembly platform (1). A spring groove plate (21) extends in the longitudinal direction; the spring groove plate (21) is provided with a strip-shaped groove for accommodating the spring (100); One end of the spring groove plate (21) is rotatably connected to the top of the support column (23) via a rotating shaft (22); the other end can rotate relative to the rotating shaft (22). Arc-shaped limiting plates (25) are spaced apart along the longitudinal direction; one end of the arc-shaped limiting plate (25) is movably connected to the spring groove plate (21), and the other end is connected to the assembly table (1); the bottom of the spring groove plate (21) is evenly provided with arc-shaped insertion holes (24) corresponding to the arc-shaped limiting plates (25); the arc-shaped limiting plates (25) are all concentrically arranged with the rotating shaft (22).

3. The nasal cannula spring-loaded device according to claim 2, characterized in that, The cannulation limiting assembly (3) also includes: A partition (33) is provided at both ends of the bottom of the insertion tube bearing groove plate (31). An arc-shaped end plate (311) is fixedly provided on the side of the partition (33) near the spring groove plate (21). The arc-shaped end plate (311) cooperates with the end of the spring groove plate (21). A ball head pin (28) is slidably provided at one end of the spring groove plate (21) near the arc-shaped end plate (311), and a spring A (29) for applying elastic force to the ball head pin (28) is fixedly provided on the inner side of the spring groove plate (21). The arc-shaped end plate (311) has a strip groove (312) and a plurality of spherical pin holes (313) on the side near the spring groove plate (21), and the strip groove (312) is located above the spherical pin holes (313); Among them, a push-pull rod (27) is rotatably provided at one end of the spring groove plate (21) near the ball head pin (28). A connecting block (210) is fixedly provided on the outside of the push-pull rod (27). The connecting block (210) is provided at the driving end of the electric push rod A (26). The electric push rod A (26) is rotatably provided on the top of the assembly table (1). The driving end of the electric push rod A (26) is connected to the connecting block (210) through the spring B (211).

4. The nasal cannula spring-loaded device according to claim 3, characterized in that, The end fixing assembly (32) includes: A fixing ring (321) is fixedly installed at one end of the insertion tube bearing groove plate (31); A conical sleeve (322) is rotatably disposed inside the fixing ring (321). The inner diameter of the conical sleeve (322) is greater than or equal to the inner diameter of the nasal cannula (200). The outer periphery of the conical sleeve (322) is a conical structure. A fixed sleeve (323) is fitted on the outside of the tapered sleeve (322). The fixed sleeve (323) is driven by an external force and slides with the insertion tube bearing groove plate (31). The inner side of the insertion tube bearing groove plate (31) is provided with a receiving groove (315) corresponding to the fixed sleeve (323).

5. The nasal cannula spring-loaded device according to claim 4, characterized in that, The inner side of the insertion tube bearing groove plate (31) is provided with a discharge port (316) between the receiving groove (315) and the fixing ring (321). A feeding channel (317) is formed between the partition (33) and the arc-shaped end plate (311) and is connected to the feeding port (316) for discharging waste material after the fixed end of the nasal cannula (200) is cut off.

6. The nasal cannula spring-loaded device according to claim 5, characterized in that, The bottom of the inner side of the cannula support plate (31) is provided with a vertical sliding groove (34) corresponding to each segment of the nasal cannula (200). The vertical sliding groove (34) is located on one side of the partition (33). An arc-shaped groove plate (35) is slidably provided on the inner side of the vertical sliding groove (34). The arc-shaped groove plate (35) cooperates with the inner side of the cannula support plate (31). The arc-shaped groove plate (35) is driven to move up and down by external force. Among them, a guide plate (39) is fixedly provided on the side of the partition (33) away from the cutting component (6) to guide the unloading of the assembled nasal cannula (200).

7. The nasal cannula spring-loaded device according to claim 1, characterized in that, A sleeve (42) is fixedly provided on the outside of the thin tube (4) at the cut end of the nasal cannula (200), and the outer diameter of the sleeve (42) is smaller than the inner diameter of the nasal cannula (200). One end of the rotating rod (61) is fixedly provided with a swing arm (65), a straight sliding hole (66) is provided on the inner side of the swing arm (65), a sliding pin (67) is slidably provided on the inner side of the straight sliding hole (66), and a connecting seat (68) is fixedly provided on the outer side of the sliding pin (67). The connecting seat (68) is located at the driving end of the electric push rod D (64). The electric push rod D (64) is fixedly installed on the top of the assembly table (1). The driving end of the electric push rod D (64) is connected to the connecting seat (68) through the spring C (69).

8. The nasal cannula spring-loaded device according to claim 1, characterized in that, Also includes: The drive assembly (5) is located on the side of the cannula limiting assembly (3) away from the spring limiting assembly (2) and is used to drive the thin tube (4) to slide and rotate. The drive assembly (5) includes a lead screw (51), one end of which is rotatably provided with a bearing plate (52), the bearing plate (52) is fixedly provided on the outside of the guide rail (53), the guide rail (53) is fixedly provided on the top of the assembly table (1), a slide (54) is threadedly connected to the outside of the lead screw (51), the slide (54) is slidably provided on the top of the guide rail (53), and a thin tube (4) is rotatably provided on the inside of the slide (54). A guide tube (12) is fixedly provided on the side of the slide (54) away from the thin tube (4). The guide tube (12) is rotatable and sealed with one end of the thin tube (4). A motor A (57) for driving the thin tube (4) to rotate is fixedly provided on the outside of the slide (54). The assembly platform (1) is fixedly provided with a device housing (11) on top. Inside the device housing (11) are a motor B for driving the lead screw (51) to rotate and a suction device for connecting the air guide pipe (12).

9. A method for inserting a spring through a nasal cannula, characterized in that, The nasal cannula spring device as described in any one of claims 1-7 includes the following steps: Several springs (100) to be installed are supported and limited by spring limiting assembly (2); The nasal cannula (200) is placed in the cannula limiting assembly (3), the cannula limiting assembly (3) is fixed and the nasal cannula (200) is expanded toward the end of the spring limiting assembly (2); The thin tube (4) is inserted horizontally along the longitudinal direction into the nasal cannula (200) and the spring to be installed (100); After the thin tube (4) is inserted into place, the external pneumatic device injects gas into the thin tube (4), causing the air bladder (41) on the outside of the thin tube (4) to expand and squeeze and clamp the spring (100) to be installed. The thin tube (4) drives the spring (100) to be installed into the nasal cannula (200) so that the spring (100) to be installed is inserted into the nasal cannula (200); After depressurization, the thin tube (4) is pulled out from inside the nasal cannula (200).

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