A T-shaped tube kit for treatment of children's laryngotracheal stenosis can be precisely and stably connected

Abstract

The present application relates to the technical field of medical devices, in particular to a T-shaped tube kit for treating children's laryngotracheal stenosis, which can be precisely and stably connected, comprising a T-shaped tube body and an adapter assembly, the adapter assembly being detachably connected with the T-shaped tube body through a positioning assembly; the T-shaped tube body is composed of a horizontal section, an upper branch and a lower branch; the adapter assembly comprises an adapter tube and a connector; the positioning assembly is composed of a gasbag rod and a gasbag arranged at one end of the gasbag rod; the gasbag can be expanded inside the upper branch to position the central axis direction of the upper branch, and the connector can be precisely connected with the upper branch along the axis direction of the gasbag.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically a T-tube kit for the treatment of tracheal stenosis in children that can be precisely and securely connected. Background Technology

[0002] Laryngotracheal stenosis refers to the narrowing of the larynx and trachea due to defects or scarring of the larynx and trachea, leading to respiratory and vocal dysfunction. This is especially true for children, who are particularly prone to respiratory distress and it is one of the most common causes of airway obstruction in children. Laryngotracheoplasty is the primary treatment for laryngotracheal stenosis in children. The core objective of the surgery is to restore airway patency and improve respiratory function. The surgery requires an individualized treatment plan based on the child's age, location, and severity of the stenosis. It involves removing the narrowed tissue, repairing the defective structure, and reconstructing a physiologically functional tracheal passage.

[0003] T-tube placement is the most crucial step in ensuring the success of laryngotracheoplasty and is the most critical step in achieving surgical success. This procedure requires the placement of an appropriate tracheal support tube, specifically a T-tube of varying sizes, into the tracheal cavity, which is then left in place for 6 months to 1 year post-surgery. Current T-tubes are made of medical-grade silicone and have a "T" shape. The vertical segment is inserted into the reconstructed laryngotracheal cavity, while the horizontal segment is brought out through a neck incision. After T-tube placement during open laryngotracheoplasty, various surgical procedures, including airway repair and tissue suturing, are required in the neck cavity, taking several hours and necessitating prolonged and effective mechanical ventilation. However, because the vertical segments of current T-tubes are open at both ends, a closed airflow loop cannot be achieved, thus preventing intraoperative closed positive pressure ventilation. Currently, in clinical practice, a temporary connection to the ventilator is often made through the horizontal segment of the T-tube, but this connection is unstable, prone to dislodgement, and violates the aseptic principles of open neck surgery.

[0004] In summary, there is an urgent need for a complete T-tube kit to achieve a closed-loop airway connection of "T-tube upper branch - anesthesia intubation - ventilator" in open laryngotracheoplasty, aiming to provide reliable mechanical ventilation in the larynx. However, there is currently no mature connection device for the T-tube upper branch and the anesthesia breathing tube, meaning that the T-tube cannot be stably connected to the anesthesia ventilator after insertion during surgery. Furthermore, the upper branch port of the T-tube is located in the laryngeal ventricle, requiring oral placement of a laryngoscope to fully expose the larynx. Currently, there are no specialized instruments to accurately insert the anesthesia breathing tube into the lumen of the T-tube upper branch, thus failing to achieve effective closed ventilation and making it impossible to guarantee safe and effective life support during surgery. Based on the above-mentioned technical difficulties, there is an urgent clinical need for a T-tube kit that can accurately and stably connect with the anesthesia breathing tube for the treatment of pediatric laryngotracheal stenosis. Summary of the Invention

[0005] The purpose of this invention is to provide a T-tube for the treatment of tracheal stenosis in children that can be precisely and securely connected, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A T-tube kit for the precise and secure connection of a pediatric laryngotracheal stenosis treatment includes: a T-tube body and an adapter assembly, wherein the adapter assembly is detachably connected to the T-tube body via a positioning assembly;

[0008] The T-shaped tube body consists of a horizontal section, an upper branch, and a lower branch; the adapter assembly includes an adapter tube and a connector tube; the positioning assembly consists of an airbag rod and an airbag disposed at one end of the airbag rod; by the expansion of the airbag inside the upper branch, the central axis direction of the upper branch can be positioned, and the connector tube can be connected to the upper branch along the axial direction of the airbag.

[0009] Preferably, the outer wall of the upper support is provided with an external thread; the outer side of the connection between the adapter tube and the insertion tube is provided with a screwing groove, and the fastening ring is rotatably and slidably disposed on the side wall of the screwing groove; the inside of the fastening ring is provided with a thread that matches the external thread, and the inner diameter of the fastening ring matches the outer diameter of the upper support.

[0010] Preferably, the airbag rod has a vent hole at its center, which is used to inflate or de-inflate the airbag to achieve its expansion into a specific shape or contraction.

[0011] Preferably, the lower end and the upper end of the airbag have different expansion coefficients; when the airbag is inflated, the airbag as a whole is an uneven cylinder that is narrower at the top and wider at the bottom, and its wide lower end can be locked inside the tube wall of the upper branch, while its narrow and pointed upper end is exposed outside the upper branch; at this time, the central axis of the airbag coincides with the central axis of the upper branch.

[0012] Preferably, the outer periphery of the airbag is further provided with marking lines.

[0013] Preferably, a gathering seat is fixedly provided on the outer periphery of the airbag rod at the bottom of the airbag. The outer periphery of the gathering seat has a plurality of gathering grooves. The bottom of the gathering grooves has a fixing hole around the outer periphery of the airbag rod. A fixing ring is provided in the fixing hole. A plurality of gathering strips are connected in series on the fixing ring. The gathering strips can rotate about the center of the cross-section of the fixing ring on the axial section of the airbag rod. The number of gathering strips is the same as the number of gathering grooves. The diameter of the gathering strips matches the inner diameter of the gathering grooves.

[0014] Preferably, a gathering ring is also provided around the outer periphery of the gathering strip and the gathering seat.

[0015] Preferably, an arc-shaped ring is provided at the bottom of the inner wall where the upper support intersects with the horizontal segment.

[0016] Preferably, the outer wall of the horizontal section of the T-shaped tube body is provided with an external thread that matches the fastening ring.

[0017] Preferably, the outer wall of the connector tube is provided with friction texture.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The present invention provides a T-tube kit for the treatment of pediatric laryngotracheal stenosis that can be precisely and stably connected. The built-in positioning component assists in positioning the central axis of the upper branch of the T-tube, which greatly improves the docking efficiency of the upper branch of the T-tube, reduces the risk of docking failure, enhances the safety of intraoperative respiratory management, and effectively ensures postoperative respiratory support.

[0020] 2. The present invention provides a T-tube kit for the treatment of pediatric laryngeal and tracheal stenosis that can be precisely and stably connected. The air bladder has elasticity. By setting the expansion shape of the air bladder, it can be ensured that the air bladder does not excessively occupy the internal space of the artificial airway when it is not inflated. After the air bladder is inflated, it can assist in the positioning of the upper branch of the T-tube deeply placed in the laryngopharyngeal cavity.

[0021] 3. The present invention provides a T-tube kit for the treatment of pediatric laryngotracheal stenosis that can be precisely and stably connected. The adapter component serves as a detachable, sealed and stable physical interface for the T-tube. The standardization of the interface of the adapter component enables the standardized extension function of the T-tube openings of different specifications and models.

[0022] 4. The present invention provides a T-tube kit for the treatment of pediatric laryngotracheal stenosis that can be precisely and stably connected. Through the flexible combination of components, the T-tube can be used alone to perform its inherent function, and can also be adapted to treatment or nursing scenarios that require the connection of more instruments and equipment. It makes it possible to quickly and flexibly switch between different openings of the T-tube, avoiding the dilemma of having to remove the T-tube in some scenarios, and expanding the applicable scope and application scenarios of the T-tube access.

[0023] 5. The present invention provides a T-tube kit for the treatment of tracheal stenosis in children that can be precisely and stably connected. All components can be made using mature existing medical device materials, the cost is controllable, and it has good prospects for industrial-scale production. Attached Figure Description

[0024] Figure 1 An overall view of a T-tube kit for the precise and secure connection of a pediatric laryngeal and tracheal stenosis treatment device.

[0025] Figure 2Exploded view of a T-tube kit for the precise and secure treatment of pediatric laryngotracheal stenosis;

[0026] Figure 3 This is a cross-sectional view of the T-shaped tube body in Example 1;

[0027] Figure 4 This is an external view of the adapter component;

[0028] Figure 5 This is an image showing the retracted state of the positioning component.

[0029] Figure 6 An exploded view of the shrunk state of the positioning component;

[0030] Figure 7 This is a diagram showing the expanded state of the positioning component.

[0031] Figure 8 This is an image of the tapered bar.

[0032] Figure 9 This is an external view of the convergence ring;

[0033] Figure 10 Here is a detailed view of part A of the airbag rod;

[0034] Figure 11 This is a cross-sectional view of the positioning component in its retracted state at point B.

[0035] Figure 12 A cross-sectional view of a T-tube kit for the precise and secure connection of a pediatric laryngotracheal stenosis treatment.

[0036] Figure 13 Enlarged cross-sectional view at point C of a T-tube kit for the precise and secure connection of a pediatric laryngotracheal stenosis treatment device.

[0037] Figure 14 Enlarged cross-sectional view at point D of a T-tube kit for the precise and secure connection of a pediatric laryngotracheal stenosis treatment device.

[0038] Figure 15 This is a cross-sectional view of the T-shaped tube assembly body in Example 2.

[0039] In the diagram: 1. T-shaped tube body; 11. Horizontal section; 12. Upper support; 121. External thread; 122. Arc ring; 13. Lower support; 2. Adapter assembly; 21. Adapter tube; 22. Connecting tube; 23. Fastening ring; 24. Tightening groove; 3. Positioning assembly; 31. Airbag rod; 311. Vent hole; 312. Gathering seat; 313. Gathering groove; 314. Fixing hole; 32. Airbag; 33. Gathering strip; 331. Fixing ring; 34. Gathering ring; 35. Marking line. Detailed Implementation

[0040] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0042] Example 1:

[0043] like Figures 1-14 As shown, the present invention provides a T-tube kit for the treatment of pediatric laryngotracheal stenosis that can be precisely and securely connected, including a T-tube body 1 and an adapter component 2; the adapter component 2 is detachably connected to the T-tube body 1 via a positioning component 3.

[0044] The T-shaped tube body 1 consists of a horizontal section 11, an upper branch 12, and a lower branch 13. The upper branch 12 and the lower branch 13 are integrated tube structures with the same central axis. The axis of the horizontal section 11 is perpendicular to the upper branch 12 and the lower branch 13, and is integrated with the tube formed by the upper branch 12 and the lower branch 13. The T-shaped tube body 1 is made of a medical material with a certain degree of elasticity, such as medical silicone. In use, the tube wall formed by the upper branch 12 and the lower branch 13 is squeezed to reduce its circumference. It is then inserted into the child's laryngotrachea through a tracheotomy, so that the upper branch 12 reaches the supraglottic region of the child's larynx, ensuring that the opening of the horizontal section 11 is exposed outside the tracheotomy. The upper branch 12 and the lower branch 13 open up the narrow inner wall of the laryngotrachea, and an artificial airway can be formed in the child's laryngotrachea through the interconnected horizontal section 11, the upper branch 12, and the lower branch 13.

[0045] Specifically, such as Figure 3 As shown, in an embodiment of the present invention, the outer wall of the upper support 12 is provided with an external thread 121, and the bottom of the inner wall where the upper support 12 intersects with the horizontal section 11 is provided with an arc-shaped ring 122.

[0046] When using the T-shaped tube body 1, the upper branch 12 often needs to be cut according to the patient's different physiological conditions. Therefore, the coverage of the external thread 121 extends to below the shortest point where the upper branch 12 is cut.

[0047] like Figure 4 , Figure 12 and Figure 14 As shown, the adapter assembly 2 includes an adapter tube 21 and a connector tube 22; the outer wall of the connector tube 22 is provided with friction texture. When the connector tube 22 is inserted into the inner wall of the upper support 12, the friction texture on its outer wall increases the friction between the tube walls, so that the connector tube 22 is firmly connected to the upper support 12 and is not easy to loosen.

[0048] Preferably, the adapter assembly 2 is threadedly connected to the upper support 12. Specifically, a screw groove 24 is provided at the connection between the adapter tube 21 and the insertion tube 22, and a fastening ring 23 is rotatably and slidably disposed on the side wall of the screw groove 24. The fastening ring 23 has a thread inside that matches the external thread 121, and the inner diameter of the fastening ring 23 matches the outer diameter of the upper support 12. When the insertion tube 22 is not connected to the upper support 12, the fastening ring 23 can rotate and slide flexibly in the screw groove 24. When the insertion tube 22 is inserted into the appropriate position in the upper support 12, the fastening ring 23 is clamped with surgical forceps or other tools and rotated toward the upper support 12, so that the fastening ring 23 can be threadedly connected to the upper support 12, thereby making the adapter assembly 2 stably connected to the upper support 12.

[0049] It should be noted that the connection method between the connector tube 22 and the upper support 12 is not limited to threaded connection. In other embodiments of the present invention, the connector tube 22 and the upper support 12 can also be connected by connector pins and slots with misaligned cross sections, or by snap-fit ​​connection.

[0050] In addition, the adapter tube 21, the intubation tube 22, and the fastening ring 23 are all made of the same elastic, skin-friendly material as the T-tube body 1, adapting to the deformation stress environment of children's oral cavity and pharynx. The elastic material of the tube walls also has high friction when they come into contact with each other. The port of the adapter tube 21, away from the intubation tube 22, is equipped with a standard interface that is compatible with medical interfaces, allowing connection to various related medical instruments and equipment via standard adapters or standard tubing.

[0051] The outer wall of the fastening ring 23 is provided with textures that can increase friction.

[0052] like Figures 5-6 As shown, the positioning component 3 consists of an airbag rod 31 and an airbag 32 disposed at one end of the airbag rod 31; by expanding the airbag 32 inside the upper support 12, the central axis direction of the upper support 12 can be positioned, and the insertion tube 22 can be docked with the upper support 12 along the axial direction of the airbag 32.

[0053] The airbag rod 31 is made of elastic material and its diameter is much smaller than the inner diameter of the T-shaped tube body 1; the airbag 32 is made of highly elastic material. A vent 311 is provided in the center of the airbag rod 31. The vent 311 is used to inflate or deflate the airbag 32 to achieve its expansion into a specific shape or contraction.

[0054] like Figure 7As shown, the lower and upper ends of the airbag 32 have different expansion coefficients. When the airbag 32 is inflated, the airbag 32 is an uneven cylinder that is narrower at the top and wider at the bottom. Its wide lower end is engaged inside the tube wall of the upper support 12, while its narrow, pointed upper end is exposed outside the upper support 12. At this time, the central axis of the airbag 32 coincides with the central axis of the upper support 12. Therefore, the upper end of the airbag 32 can serve as a positioning post, and the direction of the central axis of the upper support 12 can be accurately located through the upper apex of the airbag 32 exposed outside the upper support 12.

[0055] Because of the angular differences between the oral cavity and the laryngopharynx, and the angular differences are not exactly the same for patients of different body types, and there are also significant differences between children and adults, when it is necessary to connect the upper branch of the T-tube to related equipment, it is often impossible to accurately locate the appropriate docking axis of the upper branch 12 by visual inspection or laryngoscope, which leads to connection failure, reduces docking efficiency, and may also cause surgical failure.

[0056] When the intubation tube 22 is inserted into the laryngopharyngeal cavity through the oral cavity, the central axis of the upper branch 12 can be accurately positioned by the upper apex of the airbag 32, and it can be accurately inserted into the tube wall of the upper branch 12 along the narrow upper end of the airbag 32 until it reaches the wide lower end of the airbag 32, thus quickly completing the docking operation.

[0057] It should be noted that, in the embodiments of the present invention, a marking line 35 is also provided on the outer periphery of the airbag 32. The marking line 35 is distributed along the axial direction of the airbag 32 and is used to indicate the insertion depth. Different marking lines 35 indicate different docking depths. In use, it is often necessary to cut the upper branch 12 of the T-shaped tube body 1 according to different physiological conditions of the patient. After cutting, the upper branch 12 can expose the marking lines 35 at different positions, so that the operator can more accurately grasp the appropriate insertion depth of the upper branch 12, and can also cut and adjust the length of the docking cannula 22 accordingly.

[0058] like Figures 8-11As shown in the embodiment of the present invention, a gathering seat 312 is fixedly provided on the outer periphery of the airbag rod 31 at the bottom end of the airbag 32. The outer periphery of the gathering seat 312 has several gathering grooves 313, the direction of which is parallel to the axial direction of the airbag rod 31. A fixing hole 314 is provided at the bottom of the gathering groove 313 around the outer periphery of the airbag rod 31. A fixing ring 331 is provided inside the fixing hole 314, surrounding the outer periphery of the airbag rod 31. Several gathering strips 33 are connected in series on the fixing ring 331. A through hole is provided at the bottom of each gathering strip 33, and the fixing ring 331 passes through the through hole at the bottom of the gathering strip 33, allowing the gathering strip 33 to rotate about the center of the cross-section of the fixing ring 331 on the axial section of the airbag rod 31. The number of gathering strips 33 is the same as the number of gathering grooves 313, and the diameter of the gathering strips 33 matches the inner diameter of the gathering grooves 313. When the retractable bar 33 rotates towards the airbag 32 until it is parallel to the axis of the airbag rod 31, the retractable bar 33 can be completely retracted within the retractable groove 313. A retractable ring 34 is also provided around the outer periphery of the retractable bar 33 and the retractable seat 312; the retractable ring 34 can slide along the axial direction of the airbag rod 31. The inner periphery of the retractable ring 34 matches the outer periphery of the retractable seat 312, and when the retractable ring 34 slides to the outer periphery of the retractable seat 312, the retractable bar 33 cannot rotate freely.

[0059] The retaining ring 331, the gathering strip 33, and the gathering ring 34 can be made of a material with a certain degree of rigidity, such as metal. A thin rubber layer can be added to the contact surface between the gathering ring 34 and the gathering seat 312 to increase the friction between the gathering ring 34 and the gathering seat 312.

[0060] When the airbag 32 is in the contracted state, the constricting strip 33 is constricted in the constricting groove 313, parallel to the axial direction of the airbag rod 31; the constricting ring 34 surrounds the bottom of the constricting strip 33 and the outer periphery of the constricting seat 312, so that the constricting strip 33 forms a constricting effect on the bottom of the airbag 32, preventing the airbag 32 from spreading out due to the change in the forward direction during the process of the airbag rod 31 passing through the horizontal section 11 and the upper support 12.

[0061] like Figure 13As shown, when the airbag 32 is inflated, the lower end of the inflated airbag 32 exerts an outward pushing force on the gathering strip 33, causing the gathering strip 33 to tilt from inside the gathering groove 313 towards the inner wall of the support 12. During the tilting process, the gathering strip 33 pushes the gathering ring 34, causing the gathering ring 34 to slide downward along the outer periphery of the airbag rod 31. After the constricting strip 33 is tilted, it gets stuck between the lower end of the inflated airbag 32 and the arc-shaped ring 122 on the inner wall of the upper support 12, forming an upward supporting force on the inflated airbag 32. At the same time, the multiple constricting strips 33 that are tilted surround the outer circumference of the airbag rod 31, forming a conical support between the outer circumference of the airbag rod 31 and the inner circumference of the upper support 12. This can stabilize the central axis of the airbag rod 31 so that it does not shift, which in turn stabilizes the central axis of the airbag 32 so that it does not shift. This prevents the airbag 32 from being pushed and displaced during the downward insertion of the connecting tube 22, and also makes it easier for the operator to determine whether the connecting tube 22 has reached the appropriate position.

[0062] When the connecting tube 22 can no longer be pushed down, it indicates that the appropriate position has been reached. At this time, rotate the fastening ring 23 towards the upper support 12, so that the inner thread of the fastening ring 23 engages with the outer thread 121 of the upper support 12. The air in the airbag 32 is extracted, causing the airbag 32 to contract. The airbag rod 31 is pulled outward, and the constricting strip 33 retracts towards the axis of the airbag rod 31 under the push of the arc-shaped ring 122, further reducing the outer diameter of the airbag 32, making it easier to extract the airbag 32. After the airbag 32 is extracted, the connecting tube of the adapter assembly 2 remains connected to the connecting tubes of the upper support 12 and the lower support 13.

[0063] The arc-shaped ring 122 has a smooth longitudinal arc-shaped structure, which only forms a tangential clamping effect with the inflated bottom end of the airbag 32 on the tilted constricting strip 33 when the airbag 32 is fully inflated. After the airbag 32 contracts, the tilted end of the constricting strip 33 can easily detach along the smooth arc surface and move towards the central axis of the airbag rod 31.

[0064] In use, this invention involves selecting a T-shaped tube body 1 of suitable specifications and cutting the upper branch 12 to fit the physiological characteristics of the pediatric patient. A matching adapter component 2 is then used, and the lower end of the insertion tube 22 is cut according to the length of the upper branch 12. A positioning component 3 with an expansion size matching the T-shaped tube body 1 is selected. The cuff 32 is first inserted into the lumen of the upper branch 12 through the opening of the horizontal section 11, compressing the wall of the T-shaped tube body 1. The upper branch 12 (containing the cuff 32) and the lower branch 13 are then inserted into the lumen of the tracheolar incision, leaving the horizontal section 11 outside the incision. Inflation is then performed into the cuff 32 through the ventilation hole 311 in the center of the cuff rod 31, causing it to expand. The cuff rod 31 is then slightly pulled away from the tracheolar incision, causing the expanded bottom of the cuff 32 to engage in a suitable area above the arc-shaped ring 122. The trimmed intubation tube 22 is inserted into the laryngopharyngeal cavity through the mouth, with the opening of the intubation tube 22 fitting over the tip of the cuff 32. The intubation tube 22 is pushed downwards along the cuff 32 until it enters the upper branch 12 and cannot be pushed further. The fastening ring 23 is then clamped with surgical forceps and rotated towards the upper branch 12 to connect with the threaded connection to the outer wall of the upper branch 12. Air is withdrawn from the cuff 32 to cause it to contract. The cuff rod 31 is then pulled outwards until the cuff 32 is completely detached from the T-tube body 1. At this point, it can be connected to the anesthesia breathing tube through the standardized interface of the external connector tube 21, or directly to the ventilator.

[0065] When it is necessary to temporarily connect to the upper branch of the long-term indwelling T-tube body 1, the opening of the horizontal section 11 can be slightly pressed down to make the insertion direction of the airbag rod 31 slightly tilted upward. Then, the airbag 32 is inserted into the inner wall of the upper branch 12 through the opening of the horizontal section 11. At the same time, observe the state of the tip of the airbag 32 emerging in the patient's mouth. Then, the above operation can be performed.

[0066] Example 2:

[0067] like Figure 15 As shown, in another embodiment of the present invention, the outer wall of the horizontal section 11 of the T-shaped tube body 1 is also provided with an external thread 121 that matches the fastening ring 23, so that the adapter component 2 can be detachably and securely connected to the horizontal section 11. Through the adapter component 2, the openings of the horizontal section 11 of the T-shaped tube body 1 of different specifications and models can be standardized and converted, so that they can be standardized and connected to anesthesia intubation tubes or medical instruments and equipment. Because the horizontal section 11 is fully exposed outside the trachea, it can be quickly and detachably connected to the adapter component 2 without the assistance of the positioning component 3. The adapter tube 21 is a medical flexible tube structure with a certain degree of elasticity. When it is necessary to temporarily close the channel of the horizontal section 11, the bent adapter tube 21 can also be clamped or loosened by the closure clamp to achieve the operation of quickly closing or opening the horizontal section channel.

[0068] By setting a connection structure that matches the adapter assembly 2 between the horizontal section 11 and the upper branch 12, the T-tube's functional channels can be quickly switched, expanding the application scenarios of the T-tube. For example, while ensuring that one adapter tube 21 is connected to a ventilator, the internal channel of the other adapter tube 21 can also serve as a guide channel, achieving the separation of the breathing channel from other functional channels. For instance, inserting a suction tube into the guide channel to connect to a suction device allows for suctioning and cleaning of the tube wall; inserting a drug delivery tube allows for drug administration; and inserting a guidewire allows for the placement of other micro-instruments. The adapter tube 21 used for the guide channel can also be selected in a relatively larger size to accommodate scenarios where multiple fine tubes or guidewires are inserted simultaneously. Once a stable connection is established between the adapter assembly 2 and the T-tube body 1, operations performed at the interface of the adapter tube 21, serving as the connection channel to the T-tube body 1, can minimize surgical area contamination.

[0069] In further embodiments of the present invention, different airbag structures can be set to achieve multiple functions such as T-tube upper branch docking and positioning, and T-tube wall expansion support.

[0070] In embodiments of the present invention, the T-tube body 1 has various specifications to adapt to the physiological and anatomical dimensions of children of different body sizes; the connecting tube 22 and positioning component 3 of the adapter assembly 2 are matched with the dimensions of the T-tube body 1 and are considered matching components; in different models of the adapter assembly 2, the connecting tube 21 has different specifications, which are matched with common anesthesia cannulas or common interfaces of medical devices, and follow the matching interface standards. The T-tube body 1, adapter assembly 2, and positioning component 3 can each be used as disposable instruments to adapt to different scenarios and combinations.

[0071] This invention provides a standardized, sealed, precise, and stable physical interface for connecting T-tubes in clinical settings. It also provides a solution for the temporary and rapid opening and closing of these T-tube interfaces. The T-tube body 1, the adapter component 2, and the positioning component 3 can all be manufactured using readily available and mature medical device materials, resulting in controllable costs and promising prospects for large-scale industrial production.

[0072] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0073] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A T-tube kit for the precise and secure connection of a pediatric laryngotracheal stenosis treatment tube, characterized in that, include: The T-shaped tube body (1) and the adapter assembly (2) are detachably connected to the T-shaped tube body (1) via the positioning assembly (3); The T-shaped tube body (1) is composed of a horizontal section (11), an upper branch (12) and a lower branch (13); the adapter assembly (2) includes an adapter tube (21) and a connector tube (22); the positioning assembly (3) is composed of an airbag rod (31) and an airbag (32) disposed at one end of the airbag rod (31); by expanding the airbag (32) inside the upper branch (12), the central axis direction of the upper branch (12) can be positioned, and the connector tube (22) can be connected to the upper branch (12) along the axial direction of the airbag (32); The lower end and the upper end of the airbag (32) have different expansion coefficients. When the airbag (32) is inflated, the airbag (32) is an uneven cylinder with a narrow upper end and a wide lower end. Its wide lower end can be locked inside the tube wall of the upper support (12), and its narrow and pointed upper end is exposed outside the upper support (12). At this time, the central axis of the airbag (32) coincides with the central axis of the upper support (12).

2. The T-shaped tube assembly according to claim 1, characterized in that, The outer wall of the upper support (12) is provided with an external thread (121); the outer side of the connection between the adapter pipe (21) and the connector pipe (22) is provided with a screw groove (24), and the fastening ring (23) is rotatably and slidably disposed on the side wall of the screw groove (24); the inside of the fastening ring (23) is provided with a thread that matches the external thread (121), and the inner diameter of the fastening ring (23) matches the outer diameter of the upper support (12).

3. The T-shaped tube assembly according to claim 1, characterized in that, The airbag rod (31) has a ventilation hole (311) at its center. The ventilation hole (311) is used to inflate or de-inflate the airbag (32) so that it expands into a shape that is narrow at the top and wide at the bottom or contracts.

4. The T-shaped tube assembly according to claim 1, characterized in that, The airbag (32) is also provided with a marking line (35) on its outer periphery.

5. The T-tube assembly according to claim 1, characterized in that, A gathering seat (312) is fixedly provided on the outer periphery of the airbag rod (31) at the bottom end of the airbag (32). A plurality of gathering grooves (313) are provided on the outer periphery of the gathering seat (312). A fixing hole (314) is provided at the bottom of the gathering groove (313) around the outer periphery of the airbag rod (31). A fixing ring (331) is provided in the fixing hole (314). A plurality of gathering strips (33) are connected in series on the fixing ring (331). The gathering strips (33) can rotate about the center of the cross section of the fixing ring (331) on the axial section of the airbag rod (31). The number of gathering strips (33) is the same as the number of gathering grooves (313). The diameter of the gathering strips (33) matches the inner diameter of the gathering grooves (313).

6. The T-tube assembly according to claim 5, characterized in that, A gathering ring (34) is also provided around the outer periphery of the gathering bar (33) and the gathering seat (312).

7. The T-tube assembly according to claim 6, characterized in that, An arc-shaped ring (122) is provided at the bottom of the inner wall where the upper support (12) and the horizontal segment (11) intersect.

8. The T-tube assembly according to claim 2, characterized in that, The outer wall of the horizontal section (11) of the T-shaped tube body (1) is provided with an external thread (121) that matches the fastening ring (23).

9. The T-tube assembly according to claim 1, characterized in that, The outer wall of the connector tube (22) is provided with friction texture.

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