A sputum crust removal device for tracheotomy intubation

Abstract

The present invention belongs to the field of medical devices and relates to a sputum crust removal device for tracheotomy intubation. The sputum crust removal device at least comprises a sputum removal part, a sputum collection part, a breathing tube, and a guiding device; wherein, after being unfolded, the sputum removal part is hermetically arranged on the periphery of the sputum collection part, and the sputum removal part is foldable; the sputum collection part is used for collecting sputum crusts and can prevent them from falling into the lower respiratory tract and causing coughing; the breathing tube can provide a normal breathing passage during sputum crust removal; the guiding device restricts the sputum crust removal device to always move along the central axis of the cannula when it extends into the invisible area of the cannula, so as to avoid touching the inner wall of the cannula.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and relates to a sputum crust removal device, in particular to a sputum crust removal device for tracheotomy intubation. Background Art

[0002] During the postoperative rehabilitation of patients with tracheotomy intubation, in order to prevent the tracheotomy intubation device from being blocked by sputum crusts and affecting the patient's breathing, nursing staff need to regularly clean and care for the inner tube and outer tube of the tracheal intubation device. Currently, the most common is the pre-embedded metal outer tube. The outer tube is a 75° arc tube, and the bending radius of the center line of the outer tube is usually set to 10 times the diameter of the outer tube. During rehabilitation, the outer tube is fixedly pre-embedded in the larynx and cannot be taken out of the body; sputum crusts usually accumulate in the lower area of the outer tube. Affected by limited operating space and poor visibility, when cleaning and caring for the outer tube, there is a possibility that sputum crusts will fall off and enter the lower respiratory tract, thereby triggering coughing.

[0003] The inventor has found in long-term practice that the sputum crust removal devices in the prior art have defects such as sputum crusts being easily inhaled into the lower respiratory tract and inducing choking, insufficient cleaning ability of the brush, and great difficulty in using the negative pressure suction device for different populations (specific analysis is as follows). In addition, most sputum crust removers are for cleaning the patient's respiratory tract, and there are few devices for cleaning the outer tube of the tracheal intubation device.

[0004] Prior art 1 (authorization publication number: CN204411452U) shows a sputum crust remover for the respiratory department. When this sputum crust remover is used, the oxygen supply connector is connected to the ventilator, the suction connector is connected to the suction machine, and the catheter is inserted into the patient's trachea together with the annular sponge body under the guidance of the guiding head. The air outlet and the oxygen channel form a respiratory channel, so as not to cause the patient to suffocate; at the same time, the crust removing claws at the front end of the catheter can scrape off the sputum crusts adhering to the respiratory tract and sweep the sputum crusts into the sputum storage cavity. Under the suction force of the suction channel, the sputum crusts in the sputum storage cavity are sucked into the annular suction cavity through the sputum suction holes and are sucked out of the patient's body by the suction machine through the suction channel. The thicker sputum on the respiratory tract is discharged out of the body by the crust removing claws and the annular sponge body.

[0005] In the process of using the technical solution in prior art 1: The catheter is inserted into the patient's trachea together with the annular sponge under the guidance of the guiding head. However, the annular sponge body cannot change its size. During the insertion process, the annular sponge body will squeeze off the sputum crusts adhering to the tracheal wall, and then the sputum crusts will fall into the lower respiratory tract and cause the patient to cough.

[0006] In view of the technical problems existing in the prior art 1, in order to prevent sputum crusts from entering the lower respiratory tract, the prior art 2 (authorization publication number: CN204745271U) discloses a sputum crust removal device for the respiratory department. Before using this sputum crust removal device, the crust removing claws are fitted with the crust removing claw grooves, that is, the crust removing claws are in a closed state. When in use, the oxygen pipeline is connected to the ventilator, and the suction channel is connected to the suction machine. Then, the sputum crust removal body is inserted into the patient's trachea. When reaching the affected area, the retraction switch of the micro electric telescopic rod is turned on. The retraction of the micro electric telescopic rod drives the crust removing claws to open. The crust removing claws can scrape off the sputum crusts adhering to the respiratory tract. The sputum crusts will be sucked out of the patient's body by the suction machine through the suction pipeline. When pulling out the sputum crust removal body from the trachea, the extension switch of the micro electric telescopic rod is turned on to close the crust removing claws. Finally, the sputum crust removal body can be pulled out of the trachea.

[0007] In the process of using the technical solution in the prior art 2: when the crust removing claws penetrate into the trachea, they are in a retracted state, which can reduce the possibility of pushing sputum crusts into the lower respiratory tract during the penetration process. However, during the crust removal process, there are gaps between the crust removing claws, and some sputum crusts will fall from the gaps between the crust removing claws and enter the lower respiratory tract, causing the patient to cough and choke.

[0008] Both of the above prior arts use a negative pressure device or an inhalation device to suction sputum when removing sputum crusts. Since the sizes of sputum crusts are different, the required air pressures are different, and the tolerances of different patients to air pressure are also different. Slight mistakes are likely to cause the patient to cough and choke, increasing the discomfort of the patient. Therefore, higher requirements are put forward for the precise control of the size of the air pressure. If the pressure is too small, the sputum crusts cannot be sucked out. If the pressure is too large, the patient cannot accept it, resulting in difficult operation and poor sputum suction effect.

[0009] At the same time, in the prior art, most sputum crust removal devices use a straight-in method. When cleaning the arc-shaped casing, it is not only difficult to reach the bottom of the casing smoothly by straight-in, but also when reaching the middle and lower parts of the casing, it will touch the inner wall of the casing, greatly increasing the possibility of the sputum crusts being pushed out of the casing and falling into the lower respiratory tract.

[0010] In summary, in the front-line practice, there is an urgent need for a sputum crust removal device that can prevent sputum crusts from entering the lower respiratory tract during the penetration process, has sufficient cleaning ability, and is easy to operate. Therefore, this case is proposed. Summary of the Invention

[0011] The purpose of the present invention is: aiming at the problem that in the process of removing sputum crusts from tracheotomy intubation, the existing devices may cause sputum and sputum crusts to fall into the lower respiratory tract, thereby causing coughing and choking, the present invention proposes a sputum crust removal device for tracheotomy intubation.

[0012] In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions:

[0013] A device for removing sputum crusts from a tracheotomy cannula, comprising at least a sputum removal part, a sputum collection part, and a breathing tube; wherein, the sputum removal part is hermetically arranged on the sputum collection part, and the sputum removal part is foldable; after the sputum removal part is unfolded, the outer diameter of the sputum removal part is the same as the inner diameter of the cannula of the tracheotomy cannula device; the sputum collection part at least comprises a sputum collection cavity and a breathing hole, the sputum collection cavity and the breathing hole are arranged separately, and the breathing tube is conductively connected to the breathing hole; the breathing tube is an arc-shaped tube, and the radius of curvature of the center line of the breathing tube is the same as the radius of curvature of the center line of the cannula.

[0014] Further, the sputum removal part comprises a first scraping piece and a second scraping piece, the first scraping piece and the second scraping piece are alternately arranged on the top positioning surface of the sputum collection part, and the top positioning surface of the sputum collection part comprises an outer positioning surface and an inner positioning surface; wherein, the first scraping piece is arranged on the inner positioning surface of the sputum collection part, and a sputum drainage hole is arranged on the first scraping piece; the second scraping piece is arranged on the outer positioning surface of the sputum collection part.

[0015] Further, the sputum crust removal device further comprises a control tube, the control tube is an arc-shaped tube, and the control tube is sleeved on the breathing tube; a transmission rod is arranged between the bottom end of the control tube and the sputum removal part, one end of the transmission rod is connected to a scraping piece interface arranged on the sputum removal part, and the other end of the transmission rod is connected to a tube interface arranged on the control tube; both the tube interface and the scraping piece interface can rotate around their central axes.

[0016] Further, the transmission rod comprises a long rod and a short rod; the length of the long rod is greater than the length of the short rod; the long rod is connected to the second scraping piece, and the short rod is connected to the first scraping piece.

[0017] Further, the sputum crust removal device further comprises a limit stop block, the limit stop block is arranged on the control tube, and the limit stop block is used to control the insertion depth of the sputum crust removal device in the cannula; when the bottom of the control tube extends out of the bottom of the cannula, the limit stop block abuts against the top of the cannula.

[0018] Further, the sputum crust removal device further comprises a guiding device, the sputum crust removal device further comprises a guiding device, and the guiding device is arranged on the control tube along the bending radius direction of the control tube; the guiding device comprises a primary guiding device and a secondary guiding device; the primary guiding device comprises a guiding frame and guiding wheels, the guiding wheels are arranged on both sides of the guiding frame, and the surface arc radius of the guiding wheels matches the inner diameter of the cannula; the secondary guiding device has the same structure as the primary guiding device; based on the distance L between the bottom of the control tube and the limit stop block, the primary guiding device is arranged at a position from L / 3 to L / 2 away from the bottom of the control tube, and the secondary guiding device is arranged at a position from L / 2 to 2L / 3 away from the bottom of the control tube.

[0019] Furthermore, the phlegm crust removal device further includes a handheld part, which includes a grip rod and a push rod; the grip rod is arranged on the control tube, and the push rod is arranged on the breathing tube; a grooved pulley is sleeved on the push rod, and an arc-shaped clearance groove is arranged on the control tube, and the grooved pulley cooperates with the arc-shaped clearance groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. During the use of the present invention, the scraped phlegm crusts are collected through the phlegm collection cavity, which can prevent the phlegm crusts from falling into the lower respiratory tract and causing coughing during phlegm crust removal. At the same time, the suction sputum step is also omitted, improving the phlegm crust removal efficiency. In the present invention, the phlegm crust removal can be completed without setting an air suction device, without the requirement of precisely controlling the magnitude of the negative pressure, reducing the difficulty of using the device; at the same time, during the operation process, the operation of the nursing staff is not restricted by an external air source, and the phlegm crust cleaning action can be more flexible.

[0022] 2. The folding function of the phlegm removal part makes the contact surface between the phlegm crust removal device and the phlegm crust smaller when entering the sleeve, reducing the possibility of the phlegm crust being pushed into the patient's lower respiratory tract. After the phlegm removal part is unfolded, it is a fully enclosed structure, reducing the possibility of phlegm crust falling off and entering the lower respiratory tract during phlegm removal. At the same time, in the prior art, many technical solutions use a flexible airbag as the phlegm removal part for phlegm removal. Since the airbag is a flexible structure, there will be a problem of insufficient cleaning strength. The present invention uses a foldable structure to achieve variable diameter. When removing phlegm crusts, the phlegm removal part and the sleeve are in rigid scraping, with higher cleaning strength.

[0023] 3. The setting of the limit stop block can quickly determine whether the phlegm crust removal device reaches the specified position; through the cooperation of the primary guiding device and the secondary guiding device, the central line angle of the control tube can be restricted to coincide with the central line of the sleeve, and then the phlegm removal part can be smoothly controlled to advance along the central line of the sleeve, avoiding touching the inner wall of the sleeve.

[0024] 4. The setting of the handheld part makes it very easy to fold and unfold the phlegm removal part, thus reducing the workload of the nursing staff and improving the operation efficiency. Description of the Drawings

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the phlegm crust removal device;

[0026] Figure 2 It is a cross-sectional schematic diagram of the phlegm removal part and the phlegm collection part;

[0027] Figure 3 It is an enlarged schematic diagram of the local structure of the cross-section at the front end of the phlegm crust removal device;

[0028] Figure 4Schematic enlarged view of the partial structure in the retracted state of the sputum removal part;

[0029] Figure 5 Schematic enlarged view of the positional relationship structure between scraper one and scraper two when the sputum removal part is retracted;

[0030] Figure 6 Schematic enlarged view of the partial sectional structure of the handheld part;

[0031] Figure 7 Schematic diagram of the operation steps when the sputum crust removal device extends into the sleeve.

[0032] Among them, the meanings of the reference symbols in the figure are as follows:

[0033] 1. Sputum removal part; 11. Scraper one; 111. Sputum discharge hole; 12. Scraper two; 13. Long rod; 14. Short rod; 15. Pipe interface; 16. Scraper interface; 2. Sputum collection part; 21. Sputum collection cavity; 22. Respiration hole; 23. Outer positioning surface; 24. Inner positioning surface; 3. Respiration tube;

[0034] 4. Handheld part; 41. Grip rod; 42. Push rod; 43. Grooved wheel; 5. First-level guiding device; 51. Guiding frame; 52. Guiding wheel; 6. Limit stop block; 7. Control tube; 71. Arc-shaped clearance groove; 8. Second-level guiding device;

[0035] 10. Sleeve. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0037] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0038] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] As shown in the Figure 1 - Figure 3 , Figure 7 drawings, this embodiment is a device for removing sputum crusts from a tracheotomy cannula. The sputum crust removal device at least includes a sputum removal part 1, a sputum collection part 2, and a breathing tube 3. Among them, the sputum removal part 1 is arranged on the sputum collection part 2, the sputum removal part 1 is foldable, and after the sputum removal part 1 is unfolded, the outer diameter of the sputum removal part 1 is the same as the inner diameter of the cannula 10 of the tracheotomy cannula device; the sputum collection part 2 at least includes a sputum collection cavity 21 and a breathing hole 22, and the sputum collection cavity 21 and the breathing hole 22 are arranged separately; the breathing tube 3 is conductively connected to the breathing hole 22; the breathing tube 3 is an arc-shaped tube, and the radius of curvature of the center line of the breathing tube 3 is the same as the radius of curvature of the center line of the cannula 10.

[0042] During use, the sputum removal part 1 is retracted, and the sputum crust removal device is inserted into the cannula 10 of the tracheotomy cannula until the sputum removal part 1 extends out of the bottom of the cannula 10; then, the sputum removal part 1 is opened, and the sputum crust removal device is pulled outwards. The sputum removal part 1 scrapes off the sputum crusts on the inner wall of the cannula, and the scraped sputum crusts are collected through the sputum collection cavity 21 of the sputum collection part 2 to prevent them from falling into the lower respiratory tract and causing coughing. At the same time, the setting of the sputum collection cavity 21 eliminates the step of sputum suction and improves the efficiency of sputum crust removal. The conductive connection between the breathing hole 22 and the breathing tube 3 provides an independent breathing channel for the patient during sputum crust removal, reducing the discomfort of the patient.

[0043] Since the sputum crust cleaning device needs to be inserted into the intubation cannula provided on the trachea, its size is usually small. In the prior art, in order to set up the suction device, the interior of the sputum crust cleaning device is often designed to be relatively complex, resulting in a high cost. In addition, since the sizes of sputum crusts vary, different pressures are required, and different patients have different tolerances to negative pressure. Slight improper operation is likely to cause choking cough in patients, affecting the compliance of patients. Therefore, a relatively high requirement is put forward for the precise control of the magnitude of the negative pressure. If the pressure is too small, the sputum crust cannot be sucked out; if the pressure is too large, the patient cannot accept it, resulting in difficult operation and poor sputum suction effect. In the present invention, the sputum crust can be removed without setting up a suction device, reducing the cost. After the sputum removal part 1 is unfolded, the outer diameter of the sputum removal part 1 is the same as the inner diameter of the cannula 10 of the tracheal intubation device, which can prevent the sputum crust from falling into the lower respiratory tract during the sputum crust removal process. At the same time, during the operation process, the operation of the nursing staff is not restricted by an external air source, and the sputum crust cleaning action can be more flexible.

[0044] To avoid the sputum removal part 1 touching the tube wall when inserted into the cannula, a variable diameter structure needs to be adopted. In the prior art, an airbag is mostly used to achieve variable diameter. The airbag is a flexible structure, and the sputum and sputum crust mixture is relatively slippery. In this case, when removing the sputum crust through the airbag, there will be a problem of insufficient cleaning strength. In the present invention, a foldable structure is used to achieve variable diameter. When removing the sputum crust, the sputum removal part 1 and the cannula 10 are in rigid scraping, and the cleaning strength is higher.

[0045] Preferably, as shown in the attached Figure 2 - attached Figure 4 figure, the sputum removal part 1 includes a first scraping piece 11 and a second scraping piece 12. Both the first scraping piece 11 and the second scraping piece 12 are fan-shaped structures. The fan-shaped structure means: the shape formed after changing the lower base of an isosceles trapezoid into an arc; the first scraping piece 11 and the second scraping piece 12 are alternately arranged on the top positioning surface of the sputum collection part 2. The top positioning surface of the sputum collection part 2 includes an outer positioning surface 23 and an inner positioning surface 24. Among them, the first scraping piece 11 is arranged on the inner positioning surface 24 of the sputum collection part 2, and a sputum discharge hole 111 is arranged on the first scraping piece 11; the second scraping piece 12 is arranged on the outer positioning surface 23 of the sputum collection part 2.

[0046] In the present invention, after the sputum removal part 1 is unfolded, it is a closed structure, and the outer diameter of the sputum removal part is the same as the inner diameter of the cannula of the tracheal intubation device, which can effectively avoid the possibility of the sputum crust falling off and entering the lower respiratory tract during the sputum removal process. The meaning of the closed structure is: different from the existence of gaps between the scab removing claws in the prior art, after the sputum removal part 1 in the present invention is unfolded, there is no gap between the first scraping piece 11 and the second scraping piece 12.

[0047] Preferably, as shown in the attached Figure 1 、attached Figure 3 - attached Figure 5As shown, the phlegm crust removal device further includes a control tube 7. The control tube 7 is an arc-shaped tube, and the control tube 7 is sleeved on the breathing tube 3. To reduce the resistance when the breathing tube 3 slides in the control tube 7, the front end portion of the control tube 7 is in transitional fit with the breathing tube 3, and the other parts of the control tube 7 are in clearance fit with the breathing tube 3. A transmission rod is provided between the bottom end of the control tube 7 and the phlegm removal part 1. One end of the transmission rod is connected to a blade interface 16 provided on the phlegm removal part 1, and the other end of the transmission rod is connected to a tube interface 15 provided on the control tube 7. Both the tube interface 15 and the blade interface 16 can rotate around their central axes. The transmission rod includes a long rod 13 and a short rod 14. The length of the long rod 13 is greater than the length of the short rod 14. The long rod 13 is connected to a second blade 12 provided on the outside, and the short rod 14 is connected to a first blade 11 provided on the inside.

[0048] During use, the control tube 7 controls the action of the phlegm removal part 1 through the transmission rod, enabling the phlegm removal part 1 to expand into a circle matching the inner diameter of the sleeve 10 or to fold and retract into a folded structure. Since the first blade 11 provided on the inside is connected to a shorter transmission rod, when the phlegm removal part 1 is retracted, the first blade 11 can be retracted faster, thus avoiding interference between the first blade 11 and the second blade 12 during retraction. The folding function of the phlegm removal part 1 makes the contact surface between the phlegm crust removal device and the phlegm crust in the sleeve 10 smaller, reducing the possibility that the phlegm crust is pushed down into the lower respiratory tract of the patient during the downward movement of the phlegm crust removal device.

[0049] Preferably, the phlegm crust removal device further includes a limit stop 6. The limit stop 6 is provided on the control tube 7, and the limit stop 6 is used to control the insertion depth of the phlegm crust removal device in the sleeve 10. When the bottom of the control tube 7 extends out of the bottom of the sleeve 10, the limit stop 6 just abuts against the top of the sleeve 10 to form a block, thus preventing the phlegm crust removal device from penetrating too deep into the respiratory tract and causing discomfort to the patient.

[0050] Since the sleeve is an arc-shaped tube, when the phlegm crust removal device is inserted into the sleeve, at most only the insertion depth of the phlegm crust removal device at the front end of the sleeve can be seen by the naked eye, and the insertion depth of the rear end of the sleeve cannot be judged by the naked eye. The setting of the limit stop can quickly judge whether the phlegm crust removal device has been inserted to the specified position.

[0051] Preferably, in order to prevent the sputum removal part 1 from touching the inner wall of the sleeve 10 during the process of extending into the sleeve 10, the sputum crust removal device further includes a guiding device, which is arranged on the control tube 7 along the bending radius direction of the control tube 7; the guiding device includes a primary guiding device 5 and a secondary guiding device 8. The primary guiding device 5 includes a guiding frame 51 and guiding wheels 52, and the guiding wheels 52 are arranged on both sides of the guiding frame 51, and the guiding wheels 52 are in contact with the inner wall of the sleeve 10. The secondary guiding device 8 has the same structure as the primary guiding device 5. Let the distance between the bottom of the control tube 7 and the limit stop 6 be L. The primary guiding device 5 is arranged at a position from L / 3 to L / 2 of the bottom of the control tube 7, and the secondary guiding device 8 is arranged at a position from L / 2 to 2L / 3 of the bottom of the control tube 7.

[0052] Since the sputum crust is mainly concentrated at the position of the lower 1 / 3 section of the sleeve 10 away from the outlet, and the sleeve 10 is an arc-shaped structure, when the sputum removal part 1 extends into the front end part of the sleeve 10, it is a visible operation inside the sleeve 10. This distance can be observed to smoothly extend the sputum removal part 1. Due to the setting of the primary guiding device 5, the sputum removal part 1 can smoothly enter the invisible area of the sleeve; before the sputum removal part 1 enters the area where the sputum crust may exist, through the cooperation of the primary guiding device 5 and the secondary guiding device 8, the central line angle of the control tube 7 can be restricted to coincide with the central line of the sleeve 10, so as to smoothly control the sputum removal part 1 to advance along the central line of the sleeve 10 and avoid touching the inner wall of the sleeve.

[0053] Preferably, as shown in Figure 1 and Figure 6 - Figure 7 shown, the sputum crust removal device further includes a handheld part 4, and the handheld part 4 includes a grip rod 41 and a push rod 42. The grip rod 41 is arranged on the control tube 7, and the push rod 42 is arranged on the breathing tube; a grooved wheel 43 is sleeved on the push rod 42, and an arc-shaped clearance groove 71 is arranged on the control tube 7. The grooved wheel 43 cooperates with the arc-shaped clearance groove 71, that is, the groove of the grooved wheel 43 contacts the upper surface and the lower surface of the arc-shaped clearance groove 71.

[0054] In use, push the push rod 42 forward to move the push rod 42 away from the grip 41, control the tube 7 to slide upward relative to the breathing tube 3, and make the control tube 7 pull up and fold the expectoration part 1 through the transmission rod; at this time, insert the sputum crust removal device into the sleeve 10. Before the expectoration part 1 enters the invisible area, the first-level guiding device 5 enters the sleeve to limit and guide the expectoration part 1; before the expectoration part 1 enters the position of 1 / 3 section from the outlet of the sleeve, the second-level guiding device 8 enters the sleeve; through the cooperation of the first-level guiding device 5 and the second-level guiding device 8, the center line angle of the control tube 7 can be limited to coincide with the center line of the sleeve 10, so as to control the expectoration part 1 to move forward along the center line of the sleeve 10 and avoid touching the inner wall of the sleeve. When the limit stop 6 abuts against the top of the sleeve 10, the expectoration part 1 has completely extended out of the sleeve 10; at this time, make the push rod 42 and the grip 41 move towards each other, the control tube 7 slides downward relative to the breathing tube 3, the expectoration part 1 is unfolded, and then the sputum crust removal device is pulled outwards to complete the cleaning of the sputum crust. The setting of the handheld part 4 makes the folding and unfolding of the expectoration part 1 very easy and simple, reducing the workload of the nursing staff and improving the operation efficiency.

[0055] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A device for removing sputum crusts from a tracheotomy cannula, characterized in that: It at least includes a sputum removal part, a sputum collection part, a breathing tube, a control tube, and a handheld part; wherein, the sputum removal part is hermetically arranged on the sputum collection part, and the sputum removal part is foldable; after the sputum removal part is unfolded, the outer diameter of the sputum removal part is the same as the inner diameter of the cannula of the tracheotomy cannula device; the sputum collection part at least includes a sputum collection cavity and a breathing hole, the sputum collection cavity and the breathing hole are arranged separately, and the breathing tube is conductively connected to the breathing hole; the breathing tube is an arc-shaped tube, and the radius of curvature of the center line of the breathing tube is the same as the radius of curvature of the center line of the cannula. The sputum removal part includes a first scraping piece and a second scraping piece, the first scraping piece and the second scraping piece are alternately arranged on the top positioning surface of the sputum collection part, and the top positioning surface of the sputum collection part includes an outer positioning surface and an inner positioning surface; wherein, the first scraping piece is arranged on the inner positioning surface of the sputum collection part, and a sputum discharge hole is arranged on the first scraping piece; the second scraping piece is arranged on the outer positioning surface of the sputum collection part. The control tube is an arc-shaped tube, the control tube is sleeved on the breathing tube, and the breathing tube can slide in the control tube; a transmission rod is arranged between the bottom end of the control tube and the sputum removal part, one end of the transmission rod is connected to a scraping piece interface arranged on the sputum removal part, and the other end of the transmission rod is connected to a tube interface arranged on the control tube; both the tube interface and the scraping piece interface can rotate around their central axes. The handheld part includes a grip rod and a push rod; the grip rod is arranged on the control tube, and the push rod is arranged on the breathing tube; a grooved wheel is sleeved on the push rod, and an arc-shaped gap groove is arranged on the control tube, and the grooved wheel is matched with the arc-shaped gap groove.

2. The sputum crust removal device for tracheotomy intubation according to claim 1, characterized in that: The transmission rod includes a long rod and a short rod; the length of the long rod is greater than the length of the short rod; the long rod is connected to the second scraping piece, and the short rod is connected to the first scraping piece.

3. The sputum crust removal device for tracheotomy intubation according to claim 2, wherein: The sputum crust removal device further includes a limit stop block, the limit stop block is arranged on the control tube, and the limit stop block is used to control the insertion depth of the sputum crust removal device in the cannula; when the bottom of the control tube extends out of the bottom of the cannula, the limit stop block abuts against the top of the cannula.

4. The sputum crust removal device for tracheotomy intubation according to claim 3, characterized in that: The sputum crust removal device further includes a guiding device, the guiding device is arranged on the control tube along the bending radius direction of the control tube; the guiding device includes a primary guiding device and a secondary guiding device; the primary guiding device includes a guiding frame and guiding wheels, the guiding wheels are arranged on both sides of the guiding frame, and the surface arc radius of the guiding wheels matches the inner diameter of the cannula; the secondary guiding device has the same structure as the primary guiding device; based on the distance L between the bottom of the control tube and the limit stop block, the primary guiding device is arranged at a position from L / 3 to L / 2 away from the bottom of the control tube, and the secondary guiding device is arranged at a position from L / 2 to 2L / 3 away from the bottom of the control tube.

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