An adjustable tracheotomy cannula and method

Abstract

The present invention relates to the technical field of medical devices, and discloses an adjustable tracheotomy cannula and method, which includes an outer cannula. One end of the outer cannula is connected with an airbag, and an inner cannula is connected inside the outer cannula. A positioning tube is sleeved outside the outer cannula, and a fixed wing is connected to the positioning tube. A connection port is opened at one end of the fixed wing. A semi-circular ring is slidably connected to one side of the positioning tube, and clamping teeth are opened at both ends of the semi-circular ring. One end of the fixed wing is connected to the semi-circular ring. One end of the inner cannula is connected with an internal threaded tube, and an external threaded tube is threadedly connected to the internal threaded tube. A filtering mechanism for filtering the air entering the tracheotomy cannula is connected to the external threaded tube. The present invention can filter impurities such as dust in the air by using a filter screen structure, reducing the risk of lung infection of patients. Moreover, the connection structure of the filter screen and the inner cannula can be easily disassembled, improving the convenience of filter screen replacement and avoiding discomfort of patients caused by long-term operation of the cannula structure.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to an adjustable tracheostomy cannula and method. Background Art

[0002] A tracheostomy cannula is a medical device mainly used after tracheotomy to help patients maintain airway patency. It is usually made of materials such as metal and plastic, and is divided into parts such as an inner cannula and an outer cannula. There are different models and specifications to meet the needs of different patients, which facilitates operations such as sputum suction and oxygen supply, and plays an important role in ensuring respiratory function and promoting recovery.

[0003] Traditional tracheostomy cannulas have serious deficiencies in air filtration. Patients directly breathe external air through the tracheostomy cannula, and impurities such as dust, bacteria, and viruses in the air enter the respiratory tract without effective filtration, greatly increasing the risk of lung infection in patients and seriously affecting the patient's recovery process.

[0004] Secondly, during sputum suction operations, existing tracheostomy cannulas cannot effectively prevent sputum from flowing back. When the sputum suction operation is completed, the residual sputum in the tube may slide back to the patient's throat along the tracheostomy cannula when the patient breathes or changes position, which may not only cause the patient to have respiratory obstruction again and pose an asphyxiation risk, but also easily cause the germs carried in the sputum to be secondarily transmitted in the respiratory tract, aggravating the patient's infection condition.

[0005] Based on this, an adjustable tracheostomy cannula and method are proposed. Summary of the Invention

[0006] The purpose of the present invention is to propose an adjustable tracheostomy cannula and method to solve the above problems.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] An adjustable tracheostomy cannula includes an outer cannula, one end of the outer cannula is connected with an airbag, an inner cannula is connected inside the outer cannula, a positioning tube is sleeved outside the outer cannula, a fixed wing is connected to the positioning tube, and a connection port is opened at one end of the fixed wing;

[0009] A semi-circular ring is slidably connected to one side of the positioning tube, clamping teeth are opened at both ends of the semi-circular ring, one end of the fixed wing is connected to the semi-circular ring, an inner threaded tube is connected to one end of the inner cannula, an outer threaded tube is threadedly connected to the inner threaded tube, and a filtering mechanism for filtering the incoming air of the tracheostomy cannula is connected to the outer threaded tube.

[0010] Preferably, an abutting rod is threadedly connected to the positioning tube, and a dial is connected to one end of the abutting rod.

[0011] Preferably, a bottom sliding groove is provided on the outer sleeve, and one end of the abutting rod is slidably connected to the bottom sliding groove.

[0012] Preferably, a ring groove is provided at one end of the outer sleeve, a clamping interface is provided on the ring groove, a limiting ring is connected to the outside of the inner sleeve, a first toothed ring is rotatably connected to the limiting ring, and a clamping frame is connected to the first toothed ring.

[0013] Preferably, a hinged frame is connected to the outside of the positioning tube, the semi-circular ring is slidably connected to the hinged frame through a sliding piece, a clamping spring is connected to one side of the sliding piece, and the clamping spring is sleeved on the hinged frame.

[0014] Preferably, the filtering mechanism includes a filter screen, the filter screen is connected inside the externally threaded tube, one end of the externally threaded tube is connected to an abutting tube, and an air inlet is provided on the abutting tube;

[0015] One end of the externally threaded tube is connected to a second toothed ring, and a dust collecting frame is connected inside the second toothed ring.

[0016] Preferably, a connecting ring is connected inside the inner sleeve, a pushing spring is connected to one side of the connecting ring, and one end of the pushing spring is connected to a sealing disc.

[0017] A method for using an adjustable tracheotomy cannula, which adopts an adjustable tracheotomy cannula, includes the following steps:

[0018] S1: According to the patient's body type, adjust the position of the positioning tube connected to the outer sleeve, place the end of the outer sleeve close to the airbag at the patient's throat, and use the fixing wing and the lacing to connect the outer sleeve to the patient's neck;

[0019] S2: Connect the externally threaded tube structure to one end of the inner sleeve, put the inner sleeve into the outer sleeve from one end of the outer sleeve, and fix the inner sleeve on the outer sleeve.

[0020] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0021] 1. By adopting the filter screen structure in this application, the filter screen structure can filter impurities such as dust in the air, reduce the risk of lung infection of patients, and the connection structure of the filter screen and the inner sleeve can be easily disassembled, improving the convenience of filter screen replacement and avoiding discomfort of patients caused by long-term operation of the cannula structure.

[0022] 2. By adopting the sealing disc structure in this application, when the filtering mechanism is connected to the inner sleeve, the air in the inner sleeve is in a smooth state by using the sealing disc, and when sputum suction is required, by disassembling the filtering structure, one end of the inner sleeve is closed, avoiding the backflow of sputum in the inner sleeve and reducing the risk of infection. Description of the Drawings

[0023] Figure 1 shows a schematic structural view of the overall tracheotomy cannula provided according to an embodiment of the present invention;

[0024] Figure 2 shows a schematic structural view of the bottom chute opening provided according to an embodiment of the present invention;

[0025] Figure 3 shows an exploded structural view of the semi - circular ring connection provided according to an embodiment of the present invention;

[0026] Figure 4 shows a schematic structural view of the hinge - frame connection provided according to an embodiment of the present invention;

[0027] Figure 5 shows a schematic structural view of the ring groove opening provided according to an embodiment of the present invention;

[0028] Figure 6 shows a schematic structural view of the clamping - frame connection provided according to an embodiment of the present invention;

[0029] Figure 7 shows a schematic half - sectional view of one end of the outer cannula provided according to an embodiment of the present invention;

[0030] Figure 8 shows a schematic half - sectional view of the filter mechanism provided according to an embodiment of the present invention.

[0031] Legend:

[0032] 1. Outer cannula; 2. Inner cannula; 3. Airbag; 4. Positioning tube; 5. Semi - circular ring; 6. Fixed wing; 7. Connection port; 8. Bottom chute; 9. Abutting rod; 10. Paddle; 11. Clamping teeth; 12. Slide; 13. Clamping spring; 14. Hinge - frame; 15. Ring groove; 16. Clamping port; 17. First tooth ring; 18. Second tooth ring; 19. Limiting ring; 20. Clamping - frame; 21. External - threaded tube; 22. Abutting tube; 23. Air inlet; 24. Connection ring; 25. Push spring; 26. Sealing disc; 27. Internal - threaded tube; 28. Filter screen; 29. Dust - collecting frame. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] Please refer to Figures 1-8 , the present invention provides a technical solution:

[0035] An adjustable tracheotomy cannula, comprising an outer cannula 1, one end of the outer cannula 1 is connected with an airbag 3, the airbag 3 is located at one end of the outer cannula 1, and after inflation, it can seal the gap between the patient's trachea and the cannula, playing a role in preventing aspiration of secretions and avoiding air leakage, ensuring the effectiveness of mechanical ventilation. An inner cannula 2 is connected inside the outer cannula 1. The main function of the inner cannula 2 is to aspirate sputum and facilitate structural cleaning and replacement, maintaining the cleanliness of the ventilation structure. A positioning tube 4 is sleeved outside the outer cannula 1. When placing this tracheotomy cannula, one side of the positioning tube 4 needs to be close to the patient's neck to ensure the stability of the overall structure connection of the tracheotomy cannula. A fixing wing 6 is connected to the positioning tube 4. A connection port 7 is opened at one end of the fixing wing 6. The fixing wings 6 are located on both sides of the cannula and are used to fix the cannula to the patient's neck. It is fixed to the patient's neck skin through a lace or other fixing device to prevent the cannula from shifting during use and ensure its stable position;

[0036] A semi-circular ring 5 is slidably connected to one side of the positioning tube 4. Clamping teeth 11 are opened at both ends of the semi-circular ring 5. When placing the tracheotomy cannula, one side of the semi-circular ring 5 needs to be abutted against the patient's neck. In order to improve the patient's comfort, prevent infection and protect local tissues, etc., a gauze pad needs to be placed between the semi-circular ring 5 and the patient's neck. The arc surface of the semi-circular ring 5 is close to the patient, which is also to improve the comfort of the patient when assembling the tracheotomy cannula. In order to avoid the problem of the gauze pad shifting or falling off, the gauze pad is fixed by the clamping teeth 11. One end of the fixing wing 6 is connected to the semi-circular ring 5. One end of the inner cannula 2 is connected with an internal thread tube 27. An external thread tube 21 is threadedly connected to the internal thread tube 27. A filtering mechanism for filtering the air inlet of the tracheotomy cannula is connected to the external thread tube 21.

[0037] Specifically, as Figure 3 shown, a butting rod 9 is threadedly connected to the positioning tube 4. A dial 10 is connected to one end of the butting rod 9. The butting rod 9 is used to abut against the outside of the positioning tube 4 to fix the connection state between the positioning tube 4 and the outer cannula 1 and avoid the problem of the positioning tube 4 shifting.

[0038] Specifically, as Figure 2 shown, a bottom chute 8 is opened on the outer cannula 1. One end of the butting rod 9 is slidably connected to the bottom chute 8. By setting the bottom chute 8 structure to limit the butting rod 9 structure, the positioning tube 4 is prevented from rotating around the outer cannula 1.

[0039] Specifically, as Figure 5 and Figure 6As shown, one end of the outer sleeve 1 is provided with a ring groove 15, and a clamping interface 16 is provided on the ring groove 15. A limiting ring 19 is connected to the outer side of the inner sleeve 2. A first toothed ring 17 is rotatably connected to the limiting ring 19, and a clamping frame 20 is connected to the first toothed ring 17. When assembling the inner sleeve 2 and the outer sleeve 1, it is necessary to insert the clamping frame 20 into the clamping interface 16 and rotate the first toothed ring 17 so that one end of the clamping frame 20 is screwed into the ring groove 15, thereby stabilizing the connection state between the outer sleeve 1 and the inner sleeve 2. On the contrary, when it is necessary to separate the outer sleeve 1 and the inner sleeve 2, only need to rotate the first toothed ring 17 so that the clamping frame 20 is disengaged from the clamping interface 16.

[0040] Specifically, as Figure 3 and Figure 4 shown, a hinge frame 14 is connected to the outer side of the positioning tube 4. The hinge frame 14 is a structure with a rod-shaped middle part and both ends connected to the outer side of the positioning tube 4 through connecting blocks. The semi-circular ring 5 is slidably connected to the hinge frame 14 through a sliding piece 12. The sliding piece 12 is slidably sleeved on the rod-shaped structure. A clamping spring 13 is connected to one side of the sliding piece 12. The clamping spring 13 is sleeved on the hinge frame 14, and the other end of the clamping spring 13 is connected to the hinge frame 14. The clamping state of the clamping teeth 11 on the gauze pad is stabilized by using the clamping spring 13, and the stability of the placement of the gauze pad is further improved in cooperation with the lacing.

[0041] Specifically, as Figure 7 and Figure 8 shown, the filtering mechanism includes a filter screen 28. The filter screen 28 is connected inside the external thread tube 21. One end of the external thread tube 21 is connected with a butting tube 22. An air inlet 23 is provided on the butting tube 22. There are multiple air inlets 23, and the multiple air inlets 23 are circumferentially arranged on the butting tube 22. When the external thread tube 21 is connected to the internal thread tube 27, the butting tube 22 can push the sealing disc 26 to move, so that the sealing disc 26 is separated from one end of the internal thread tube 27. At this time, the pushing spring 25 structure is compressed, and the inner sleeve 2 is in a ventilated state at this time;

[0042] A second toothed ring 18 is connected to one end of the external thread tube 21. A dust collecting frame 29 is connected inside the second toothed ring 18. The structure of the second toothed ring 18 is provided to facilitate the disassembly of the external thread tube 21 structure, and the dust collecting frame 29 structure can preliminarily adsorb impurities. When this tracheotomy cannula is assembled, the dust collecting frame 29 is in a wet state due to the action of the patient's moist exhaled breath, and this state can improve the adsorption effect of the dust collecting frame 29 structure on impurities.

[0043] Specifically, as Figure 7As shown, a connecting ring 24 is connected inside the inner sleeve 2, and a pushing spring 25 is connected to one side of the connecting ring 24. A sealing disk 26 is connected to one end of the pushing spring 25. When the sealing disk 26 is not abutted by the abutting tube 22, the pushing spring 25 can push one side of the sealing disk 26 to abut against one end of the internal threaded tube 27. At this time, the sealing disk 26 can seal the opening at one end of the internal threaded tube 27. In order to improve the sealing effect during abutment, a rubber ring can be connected to one side of the sealing disk 26 to avoid gaps in the abutment. During sputum suction, due to the atmospheric pressure, sputum can be prevented from flowing back from the inner sleeve 2 into the patient's body, thereby improving the sputum suction efficiency and avoiding secondary infection.

[0044] To sum up, the adjustable tracheostomy cannula and method provided in this embodiment need to be evaluated according to the patient's condition when in use, and the necessity and feasibility of tracheotomy are determined. Then, according to the patient's body shape and the depth to which the cannula needs to be inserted, the position of the positioning tube 4 connected to the outer cannula 1 is adjusted, and then the paddle 10 is pulled, the abutment rod 9 is rotated, and one end of the abutment rod 9 is abutted against the bottom slide groove 8, thereby completing the fixation of the positioning tube 4 structure.

[0045] Then, the elastic force of the clamping spring 13 is overcome to separate the two semicircular rings 5 from each other, and the gauze pad structure is clamped by the clamping teeth 11 at both ends of the semicircular rings 5. The fixed wings 6 are symmetrically placed on both sides of the patient's neck, and a lace is connected to the connecting port 7 at one end of the fixed wings 6 to fix the lace to the skin of the patient's neck, thereby completing the insertion operation of the outer sleeve 1 structure.

[0046] Then, the external threaded tube 21 is threadedly connected to the internal threaded tube 27 at one end of the inner sleeve 2, the sealing disk 26 is pushed open by the abutting tube 22, and the end of the inner sleeve 2 away from the gear ring 2 18 is inserted into the outer sleeve 1, and the gear ring 17 rotatably connected to the outside of the inner sleeve 2 is rotated to ensure that the clamping frame 20 connected to one side of the gear ring 17 is clamped into the clamping interface 16, and then the gear ring 17 is rotated 180° to ensure that the clamping frame 20 and the ring groove 15 are not easily separated, thereby completing the installation of the overall structure of the tracheotomy sleeve.

[0047] When the tracheostomy cannula is used, the inner cannula 2 needs to be regularly cared for. During the care, the clamping frame 20 is disassembled to separate the inner cannula 2 from the outer cannula 1, and then the filter mechanism is disassembled from the inner cannula 2 to be cared for separately. At the same time, the outer cannula 1 of the patient needs to be replaced with a new set of inner cannula 2 structure to reduce the risk of infection.

[0048] When sputum suction operation is required, it can assist in sucking the patient's sputum into the inner sleeve 2. Subsequently, the filtering mechanism is unscrewed so that one end of the inner sleeve 2 is closed. Then, the inner sleeve 2 is removed, and the removed components are respectively cleaned and cared for. Since the pipeline is in a closed state when the inner sleeve 2 is removed, the patient needs to use the mouth and nose for short-term assisted breathing to avoid affecting the patency of the patient's airway.

[0049] Both the positioning tube 4 and the semi-circular ring 5 structures in this tracheotomy cannula are adjustable and can be adjusted according to the patient's condition. Cooperating with the filtering mechanism and the sealing disc 26, it can achieve the filtration of air, prevent impurities such as dust, bacteria, and viruses in the air from entering the respiratory tract without effective filtration, reduce the risk of the patient's lung infection, improve the patient's recovery process, and the open or closed state of one end of the adjustable inner sleeve 2 can achieve efficient sputum suction operation or keep the patient's airway unobstructed, improving the convenience of use.

[0050] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable tracheotomy cannula, comprising an outer cannula (1), characterized in that, One end of the outer sleeve (1) is connected with an airbag (3). An inner sleeve (2) is connected inside the outer sleeve (1). A positioning tube (4) is sleeved outside the outer sleeve (1). A fixed wing (6) is connected to the positioning tube (4). A connection port (7) is formed at one end of the fixed wing (6). A semi-circular ring (5) is slidably connected to one side of the positioning tube (4). Clamping teeth (11) are formed at both ends of the semi-circular ring (5). One end of the fixed wing (6) is connected to the semi-circular ring (5). One end of the inner sleeve (2) is connected with an internal thread tube (27). An external thread tube (21) is threadedly connected to the internal thread tube (27). A filtering mechanism for filtering the air inlet of the tracheotomy cannula is connected to the external thread tube (21). The filtering mechanism includes a filter screen (28). The filter screen (28) is connected inside the external thread tube (21). One end of the external thread tube (21) is connected with an abutting tube (22). An air inlet (23) is formed on the abutting tube (22). One end of the external thread tube (21) is connected with a second toothed ring (18). A dust collecting frame (29) is connected inside the second toothed ring (18). A connection ring (24) is connected inside the inner sleeve (2). A pushing spring (25) is connected to one side of the connection ring (24). One end of the pushing spring (25) is connected with a sealing disc (26).

2. The adjustable tracheotomy cannula according to claim 1, wherein An abutting rod (9) is threadedly connected to the positioning tube (4). A dial (10) is connected to one end of the abutting rod (9).

3. The adjustable tracheotomy cannula according to claim 2, wherein A bottom sliding groove (8) is formed on the outer sleeve (1). One end of the abutting rod (9) is slidably connected to the bottom sliding groove (8).

4. The adjustable tracheotomy cannula according to claim 1, wherein, A ring groove (15) is formed at one end of the outer sleeve (1). A clamping interface (16) is formed on the ring groove (15). A limiting ring (19) is connected to the outside of the inner sleeve (2). A first toothed ring (17) is rotatably connected to the limiting ring (19). A clamping frame (20) is connected to the first toothed ring (17).

5. The adjustable tracheotomy cannula according to claim 1, characterized in that, A hinge frame (14) is connected to the outside of the positioning tube (4). The semi-circular ring (5) is slidably connected to the hinge frame (14) through a sliding piece (12). A clamping spring (13) is connected to one side of the sliding piece (12). The clamping spring (13) is sleeved on the hinge frame (14).

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