Improved tracheal tube
By designing an improved tracheostomy tube, an inner tube with a central opening is created, which is then sealed by the inner tube to form a complete breathing channel. This solves the problem of airway obstruction and improves the safety and success rate of tracheostomy training.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO REHABILITATION HOSPITAL (NINGBO REHABILITATION CENT FOR DISABLED PERSONS NINGBO REHABILITATION CENT FOR DEAF CHILDREN)
- Filing Date
- 2025-04-09
- Publication Date
- 2026-06-09
AI Technical Summary
Existing endotracheal tubes are prone to causing airway obstruction during endotracheal occlusion training, leading to wheezing, difficulty breathing, and decreased oxygen saturation in patients, thus affecting the success rate of extubation.
An improved tracheostomy tube was designed, including an outer tube and an inner tube. The outer tube has a central opening, and the inner tube can be inserted into the outer tube to seal the central opening. The outer opening of the outer tube can be pulled out for tube occlusion training. The inner tube and the outer tube are adapted to form a complete breathing channel.
It effectively avoids airway obstruction, and patients do not experience wheezing or difficulty breathing during tube occlusion training, which improves oxygen saturation and simplifies the extubation process.
Smart Images
Figure CN224331320U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of medical devices, and in particular to a modified tracheal cannula. Background Technology
[0002] Patients with cerebrovascular diseases, traumatic brain injury, etc., often require artificial airway ventilation support due to impaired consciousness, weakened or absent cough and swallowing reflexes, and poor airway clearance. Tracheostomy involves making an incision in the anterior wall of the trachea in the cervical region and inserting a tracheostomy tube. This tube is left in place to relieve respiratory distress symptoms such as upper airway obstruction, respiratory dysfunction, or lower airway secretion retention. However, tracheostomy disrupts the integrity of the airway, depriving the patient of the physiological functions of the upper respiratory tract mucosa in warming, humidifying, and filtering inhaled air. Long-term indwelling can easily lead to infection, granulation tissue hyperplasia, and tracheal stenosis. Premature extubation can lead to extubation failure, while delayed extubation prolongs hospital stays, increases patient suffering, and incurs financial burden. Home care after discharge with a tracheostomy tube also presents many difficulties and safety risks. Improper care can easily lead to complications such as tube obstruction, dislodgement, and infection, which in severe cases can even threaten the patient's life. Therefore, helping tracheostomy patients remove their tracheostomy tubes as early as possible can significantly reduce complications and improve patients' quality of life and well-being. Before extubation, a comprehensive assessment of the patient is necessary, including five key aspects: sputum quality, expiratory muscle strength, coughing ability, swallowing function, and airway patency. Furthermore, there are three methods for performing extubation:
[0003] 1. Direct complete occlusion: For patients who pass the pre-extubation assessment on the first attempt, have no neuromuscular disease, and can tolerate complete occlusion for 1 minute, direct complete occlusion for 24–48 hours can be performed. If the patient tolerates it, extubation can be considered (Grade B recommendation, Level 2b evidence). 2. Progressive occlusion: For patients who fail the pre-extubation assessment on the first attempt but resolve the issue through subsequent treatment, or who have neuromuscular disease, or who cannot tolerate direct complete occlusion, a progressive occlusion approach can be selected as appropriate (Grade B recommendation, Level 2b evidence). 3. Extubation without occlusion guidance: For patients with stable clinical condition, low sputum volume, good swallowing and coughing abilities, and no significant airway obstruction, direct extubation can be chosen (Grade B recommendation, Level 3b evidence).
[0004] For elderly patients or those with multiple underlying medical conditions, direct extubation without endotracheal occlusion is not feasible. Instead, direct or progressive endotracheal occlusion training is often employed (disconnecting the ventilator, completely or partially blocking the external opening of the endotracheal cannula, and the patient practicing spontaneous breathing through the mouth, nose, and trachea). For patients undergoing endotracheal occlusion training, this training is somewhat similar to breath-holding training. This is because current endotracheal cannula insertion techniques often block most of the tracheal passage, resulting in incomplete or even complete airway obstruction. During endotracheal occlusion training, patients are prone to shortness of breath, difficulty breathing, and decreased oxygen saturation, making extubation difficult. Utility Model Content
[0005] The technical problem to be solved by this utility model is to address the above-mentioned deficiencies in the existing technology by providing an improved tracheostomy tube, which can effectively prevent airway obstruction during endotracheal tube training.
[0006] To solve the above problems, the present invention adopts the following technical solution:
[0007] An improved tracheostomy tube includes an outer tube and an inner tube. The two ends of the outer tube are an external opening and an internal opening, respectively. The end of the outer tube with the internal opening is inserted into the patient's trachea through a neck incision. The end of the outer tube with the external opening is located on the outside, and a middle opening is also provided on the side wall of the outer tube. Both ends of the inner tube are open. When the inner tube is inserted into the outer tube, it can block the middle opening. After the inner tube is pulled out of the outer tube, it can block the external opening of the outer tube for endotracheal occlusion training.
[0008] Preferably, the outer contour of the inner sleeve is adapted to the inner contour of the outer sleeve.
[0009] Preferably, both the inner sleeve and the outer sleeve are arc-shaped.
[0010] Preferably, the intermediate opening is located on the outer sleeve at one end near the outer opening.
[0011] Preferably, the modified tracheostomy tube further includes a fixing wing, which is fixedly mounted on the outer tube and is used to support the patient's neck when the outer tube is inserted into the patient's trachea.
[0012] Preferably, the modified tracheostomy tube further includes a fixing rope, and the two ends of the fixing wing are provided with a first perforation and a second perforation. One end of the fixing rope is fixed to the first perforation, and the other end is wrapped around the patient's neck and fixed to the second perforation.
[0013] Preferably, a fixing airbag is provided on the side wall of the outer sleeve near the inner opening.
[0014] Preferably, the improved tracheostomy tube further includes an inflation tube, one end of which is connected to an inflation device and the other end of which is connected to the fixed airbag. The inflation device is used to inflate or deflate the fixed airbag.
[0015] Preferably, the modified tracheostomy tube further includes a suction tube, one end of which is inserted into the patient's trachea and the other end is connected to a negative pressure suction device, which absorbs sputum from the patient's trachea through the suction tube.
[0016] Preferably, both the inner sleeve and the outer sleeve are made of plastic.
[0017] Compared with the prior art, the present invention has at least the following beneficial effects:
[0018] (1) In this utility model, the outer tube is provided with a middle opening. When tube blocking training is required, the inner tube is simply pulled out from the outer tube and the outer opening is blocked. The channel formed by the middle opening and the inner opening provides a channel for the patient's spontaneous breathing, which facilitates tube blocking training and avoids wheezing, difficulty breathing and decreased oxygen saturation.
[0019] (2) In this utility model, the outer sleeve and the inner sleeve are arranged in layers, and the outer contour of the inner sleeve is adapted to the inner contour of the outer sleeve. When the inner sleeve is inserted into the outer sleeve, the inner sleeve and the outer sleeve are perfectly integrated. The inner sleeve can effectively block the middle opening of the outer sleeve so that the patient can breathe with the help of the ventilator. When tube occlusion training is required, the inner sleeve can be pulled out from the outer sleeve, and the middle opening and the inner opening can form a breathing channel.
[0020] (3) In this utility model, a fixing airbag is provided on the side wall of the outer tube near the inner opening. The fixing airbag can fix the tracheal tube in the patient's trachea and prevent the patient's sputum from flowing into the depth of the trachea. Attached Figure Description
[0021] Figure 1 This is a front structural diagram of the improved tracheostomy tube in Embodiment 1 of this utility model;
[0022] Figure 2 This is a side view of the improved tracheostomy tube in Embodiment 1 of this utility model;
[0023] Figure 3 This is a cross-sectional view of the improved tracheostomy tube in Embodiment 1 of this utility model.
[0024] In the diagram: 100 - outer sleeve, 110 - outer opening, 120 - inner opening, 130 - middle opening, 200 - inner sleeve, 300 - fixed wing, 310 - first perforation, 320 - second perforation, 400 - fixed airbag, 410 - inflation tube, 420 - inflation connection port, 500 - suction tube, 510 - suction connection port. Detailed Implementation
[0025] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.
[0026] In the description of this utility model, it should be noted that the terms "above" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] Example 1
[0030] like Figure 1-3 As shown, this embodiment discloses a modified tracheostomy tube, including an outer tube 100 and an inner tube 200. The outer tube 100 has an outer opening 110 and an inner opening 120 at its two ends, respectively, and a gas passage in the middle connecting the outer opening 110 and the inner opening 120. The inner tube 200 has a similar structure to the outer tube 100, also including openings at both ends and a gas passage connecting the two openings. The diameter of the inner tube 200 is smaller than the diameter of the outer tube 100, so that the inner tube 200 can be inserted into the outer tube 100.
[0031] Patients with cerebrovascular diseases, traumatic brain injury, etc., often require artificial airway ventilation due to impaired consciousness, weakened or absent cough and swallowing reflexes, and poor airway clearance. These patients typically require tracheotomy. Tracheotomy is a surgical procedure that involves making an incision in the anterior wall of the trachea in the cervical region and inserting a tracheostomy tube. The tracheostomy tube is left in place to relieve respiratory distress symptoms such as upper airway obstruction, respiratory dysfunction, or lower airway secretion retention.
[0032] In this embodiment, the inner opening 120 of the outer cannula 100 is inserted into the patient's trachea through a neck incision, while the outer opening 110 of the outer cannula 100 is located externally. A middle opening 130 is also provided on the side wall of the outer cannula 100. The inner cannula 200 is inserted into the outer cannula 100, sealing the middle opening 130. The inner cannula 200 and the trachea form an artificial airway, and the ventilator communicates with the outer opening 110 of the inner cannula 200, thereby assisting the patient's breathing. When tracheal obstruction training is required, the inner cannula 200 is removed from the outer cannula 100, and then the outer opening 110 of the outer cannula 100 is blocked. The patient can then perform tracheal obstruction training through the airway formed by their mouth and nose and the middle opening 130 and inner opening 120 of the outer cannula 100. This avoids the problem of tracheal obstruction caused by the outer cannula 100.
[0033] Specifically, the outer contour of the inner tube 200 is adapted to the inner contour of the outer tube 100. When the inner tube 200 is inserted into the outer tube 100, the inner tube 200 and the outer tube 100 will form a whole, thereby achieving the function of air supply. Furthermore, the perfect fit between the outer contour and the outer tube 100 allows the inner tube 200 to completely seal the middle opening 130 on the outer tube 100, preventing air leakage from the middle opening 130 due to gaps between the inner tube 200 and the outer tube 100 when the patient breathes through the ventilator.
[0034] like Figure 1 As shown, both the inner cannula 200 and the outer cannula 100 are arc-shaped to fit the human trachea, thus facilitating the smooth insertion of the outer cannula 100 into the patient's trachea.
[0035] like Figure 2 , 3 As shown, the intermediate opening 130 is further positioned on the outer tube 100 near the outer opening 110. Because the outer tube 100 has an arc-shaped structure, when it is inserted into the trachea, the inner opening 120 of the outer tube 100 is close to one side wall of the trachea. Therefore, positioning the intermediate opening 130 of the outer tube 100 near the outer opening 110 (near the other side wall of the trachea) allows the air passage formed by the intermediate opening 130 and the inner opening 120 to coincide as closely as possible with the natural curvature of the human trachea, thus facilitating spontaneous breathing during tracheal obstruction training.
[0036] like Figure 1 , 2 As shown, the modified tracheostomy tube also includes a fixing wing 300, which is fixedly installed on the outer tube 100 and perpendicular to the outer tube 100. The fixing wing 300 is used to support the outer tube 100 outside the patient's neck when it is inserted into the patient's trachea, thereby providing initial fixation for the outer tube 100.
[0037] like Figure 1 As shown, the modified tracheostomy tube also includes a fixing rope. The two ends of the fixing wing 300 are provided with a first perforation 310 and a second perforation 320. One end of the fixing rope is fixed to the first perforation 310, and the other end is wrapped around the patient's neck and fixed to the second perforation 320, thereby fixing the fixing wing 300 to the patient's neck, and further fixing the outer tube 100.
[0038] like Figure 1 , 2 As shown, furthermore, a fixing cuff 400 is provided on the side wall of the outer tube 100 near the inner opening 120. The fixing cuff 400 can be inflated or deflated. After the outer tube 100 is inserted into the patient's trachea, the fixing cuff 400 is inflated so that the fixing cuff 400 contacts the inner wall of the trachea, thereby fixing the tracheal tube inside the trachea. In addition, the fixing cuff 400 also has the function of preventing the patient's sputum from entering the deeper part of the trachea.
[0039] like Figure 1 , 2 As shown, optionally, the modified tracheostomy tube also includes an inflation tube 410. One end of the inflation tube 410 is connected to an inflation device, and the other end is connected to a fixation cuff 400. The inflation device is used to inflate or deflate the fixation cuff 400. Specifically, the fixation wing 300 is also provided with a fixation hole, through which one end of the inflation tube 410 passes and is inserted into the patient's trachea, thereby communicating with the fixation cuff 400. It is worth noting that the inflation tube 410 is located outside the outer sheath 100.
[0040] like Figure 1 , 2 As shown, optionally, the modified tracheostomy tube also includes a suction tube 500. One end of the suction tube 500 is inserted into the patient's trachea, and the other end is connected to a negative pressure suction device, which absorbs sputum from the patient's trachea through the suction tube 500. Specifically, the fixing wing 300 is also provided with another fixing hole, through which one end of the suction tube 500 passes and is inserted into the patient's trachea. It is worth noting that the suction tube 500 is located outside the outer tube 100.
[0041] Optionally, an inflation connection port 420 can be provided at the external end of the inflation tube 410, and the inflation device can be easily connected to or disconnected from the inflation tube 410 through the inflation connection port 420; a suction connection port 510 can be provided at the external end of the suction tube 500, and the negative pressure suction device can be easily connected to or disconnected from the suction tube 500 through the suction connection port 510.
[0042] Optionally, in this embodiment, both the inner tube 200 and the outer tube 100 are made of plastic. Plastic is lightweight and inexpensive, and using plastic materials can significantly increase the ease of use of the tracheostomy tube.
[0043] In this embodiment, the outer tube 100 has a central opening 130. When tube occlusion training is required, simply pull the inner tube 200 out of the outer tube 100 and then block the outer opening 110. The channel formed by the central opening 130 and the inner opening 120 provides a passage for the patient's spontaneous breathing, facilitating tube occlusion training and preventing shortness of breath, difficulty breathing, and decreased oxygen saturation. Furthermore, the outer tube 100 and the inner tube 200 are layered, and the outer contour of the inner tube 200 matches the inner contour of the outer tube 100. When the inner tube 200 is inserted into the outer tube 100, the inner tube 200 and the outer tube 100 are perfectly integrated, and the inner tube 200 can effectively block the central opening 130 of the outer tube 100, allowing the patient to breathe with the help of a ventilator. When tube occlusion training is required, simply pull the inner tube 200 out of the outer tube 100, and the central opening 130 and the inner opening 120 will form a breathing passage. In addition, a fixing airbag 400 is provided on the side wall of the outer tube 100 near the inner opening 120. The fixing airbag 400 can fix the tracheal tube in the patient's trachea and prevent the patient's sputum from flowing into the depth of the trachea.
[0044] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.
Claims
1. An improved tracheostomy cannula, characterized in that, Including outer sleeve and inner sleeve, The outer tube has an external opening and an internal opening at its two ends. The end with the internal opening is inserted into the patient's trachea through a neck incision, while the end with the external opening is located on the outside. Furthermore, a central opening is provided on the side wall of the outer tube. Both ends of the inner sleeve are open. When the inner sleeve is inserted into the outer sleeve, it can block the middle opening. After the inner sleeve is pulled out of the outer sleeve, it can block the outer opening of the outer sleeve for tube blocking training.
2. The improved endotracheal cannula according to claim 1, characterized in that, The outer contour of the inner sleeve is adapted to the inner contour of the outer sleeve.
3. The improved endotracheal cannula according to claim 2, characterized in that, Both the inner sleeve and the outer sleeve are arc-shaped.
4. The improved endotracheal cannula according to claim 1, characterized in that, The intermediate opening is located on the outer tube at one end near the outer opening.
5. The improved endotracheal cannula according to claim 1, characterized in that, It also includes a fixing wing, which is fixedly mounted on the outer tube and is used to support the patient's neck when the outer tube is inserted into the patient's trachea.
6. The improved endotracheal cannula according to claim 5, characterized in that, It also includes a fixing rope, with a first perforation and a second perforation at both ends of the fixing wing. One end of the fixing rope is fixed to the first perforation, and the other end is wrapped around the patient's neck and fixed to the second perforation.
7. The improved endotracheal cannula according to claim 1, characterized in that, The outer sleeve has a fixed airbag on its side wall near the inner opening.
8. The improved endotracheal cannula according to claim 7, characterized in that, It also includes an inflation tube, one end of which is connected to an inflation device and the other end of which is connected to the fixed airbag. The inflation device is used to inflate or deflate the fixed airbag.
9. The improved endotracheal cannula according to claim 1, characterized in that, It also includes a suction tube, one end of which is inserted into the patient's trachea and the other end is connected to a negative pressure suction device, which absorbs sputum from the patient's trachea through the suction tube.
10. The improved tracheostomy tube according to any one of claims 1-9, characterized in that, Both the inner sleeve and the outer sleeve are made of plastic.