Telescopic T tube for reconstruction of laryngotracheal stenosis

Abstract

The invention discloses a telescopic T-shaped tube for laryngotracheal stenosis reconstruction, and relates to the technical field of respiratory tract medical instruments, the telescopic T-shaped tube comprises a T-shaped tube, the T-shaped tube comprises a movably arranged breathing tube, and the T-shaped tube is divided into a breathing cavity and a sputum suction cavity by the breathing tube; the switching unit is used for switching different chambers to be communicated with the outside and comprises a sealing cover arranged at the port of the breathing tube; the extending part is oppositely arranged at the end opening of the T-shaped pipe and comprises folding parts which are arranged in a circumferential array mode, and the diameter opening of the extending part is shrunk when the folding parts are folded and shrunk. According to the telescopic T-tube for laryngotracheal stenosis reconstruction, an operator can extrude the contracted extension part to open a narrow airway with one hand, equipment is placed in the trachea, compared with a conventional T-tube, implantation is more convenient, then sputum is sucked, liquid medicine is injected into the airway, the trachea is smooth, the extension part is not extruded any more, and the operation is convenient. The folding part is unfolded and overcomes the friction force of the clamping piece, and the extending part is unfolded and abuts against the air pipe.

Description

Technical Field

[0001] The invention relates to the technical field of respiratory medical devices, and in particular to a telescopic T-tube for laryngeal tracheal stenosis reconstruction. Background Art

[0002] The use of multifunctional T-tubes in laryngeal tracheal stenosis reconstruction surgery is a common technique. Multifunctional T-tubes are usually used for airway reconstruction and support, helping to maintain airway patency and promote healing.

[0003] During the operation, the doctor will select the appropriate T-tube according to the patient's specific situation.

[0004] In conjunction with publication number CN221751875U, publication date 2024-09-24, a tracheal cannula for treating tracheal stenosis is disclosed, including an insertion tube, both ends of the insertion tube are provided with a shrinkage round head, the inside of the shrinkage round head is provided with a vent, a positioning tube is fixedly connected to the middle position of one side of the insertion tube, an inclined angle is formed between the positioning tube and the insertion tube, an annular protrusion is fixedly connected to the outer surface of the positioning tube, and the annular protrusions are evenly spaced on the surface of one end of the positioning tube, a suction tube is fixedly compounded on one side of the inner wall of the insertion tube, both ends of the suction tube are provided with a suction through hole, the suction through hole is located on one side of the vent, one side of the suction tube is fixedly connected to a connecting tube, the connecting tube is fixedly compounded to the inner wall of the positioning tube, and one end of the positioning tube is sleeved with a positioning ring.

[0005] However, in the prior art including the above-mentioned patent, it is necessary to set a suction tube inside the insertion tube to increase the inner diameter of the insertion tube. During the implantation process, the operator needs to hold the surgical forceps to retract the end of the insertion tube and squeeze it into the patient's throat. During this process, the operator needs to press the suction tube with the surgical forceps at all times, which makes the operation more difficult. Summary of the invention

[0006] The object of the present invention is to provide a telescopic T-tube for laryngeal tracheal stenosis reconstruction, so as to solve the above-mentioned problems.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a telescopic T-tube for laryngeal tracheal stenosis reconstruction, comprising a T-tube, comprising a movably arranged breathing tube, and the T-tube is divided into a breathing cavity and a sputum suction cavity by the breathing tube;

[0008] A switching unit for switching different chambers to communicate with the outside world, including a cover provided at a port of the breathing tube;

[0009] The extension part is arranged relative to the T-tube port, and includes folding parts arranged in a circumferential array, and the folding parts are folded and contracted to shrink the diameter of the extension part;

[0010] Also included is a clip for retaining the extension in the retracted state.

[0011] Preferably, the device further comprises a fixing platform arranged on the T-tube, and a rubber patch is arranged on the side of the fixing platform facing the human throat.

[0012] Preferably, the breathing tube is slidably arranged relative to the T-tube, and a diffusion cavity is arranged on a section extending toward the human throat.

[0013] Preferably, a filter element is provided in the breathing tube to prevent bacterial contamination.

[0014] Preferably, the switching unit further comprises an elastic curved plate for locking the breathing tube, and the elastic curved plate is driven to bend in the reverse direction and pull the breathing tube.

[0015] Preferably, the extending portion further comprises a fixing plate which is twisted in a spiral shape as the folding portion is folded.

[0016] Preferably, a hollow layer communicating with the folded portion is provided inside the T-tube.

[0017] Preferably, the device further comprises an air bag which is arranged inside the T-tube and is used for sealing the breathing cavity.

[0018] Preferably, a valve is fixedly provided on the cover which opens and closes during the switching process.

[0019] Preferably, the end of the extension portion adjacent to the T-tube is a main pipe portion, the end of the main pipe portion is provided with a slide plate distributed in a circumferential array, and one end of the T-tube is fixedly provided with a sliding condition distributed in a circumferential array and slidably assembled with the slide plate in a one-to-one correspondence;

[0020] The sliding assembly of the sliding condition and the slide groove plate has an extension limit position and a contraction limit position, and is located below the contraction limit position. The non-overlapping parts of the outer walls of the sliding condition and the slide groove plate are both provided with threaded wires, and also include a threaded ring that is sleeved on the sliding condition and the slide groove plate and threadedly matched with the threaded wires.

[0021] Preferably, the T-shaped tube has an arc end abutting against the sealing cover, and the sealing cover is blocked by the arc end and concave when driven downward.

[0022] In the above technical scheme, the present invention provides a retractable T-tube for laryngeal tracheal stenosis reconstruction, which has the following beneficial effects: the operator can use one hand to shrink the extension part to squeeze the narrow airway and place the device in the trachea, which is more convenient to implant than the conventional T-tube. Then, by suctioning the sputum and injecting liquid medicine into the airway, the trachea is unobstructed and the extension part is no longer squeezed. The folded part unfolds and overcomes the friction of the clamp, and the extension part unfolds and supports the trachea. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 An overall three-dimensional schematic diagram provided for an embodiment of the present invention;

[0025] Figure 2 An overall three-dimensional schematic diagram provided for an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of the extension part in the retracted state provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the structure of the extension part in the expanded state provided by an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the structure of the fixing plate and the folding portion provided in an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the internal structure of a T-tube provided in an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of a diffusion chamber and an elastic curved plate in a default state provided by an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of an elastic curved plate provided by an embodiment of the present invention in a driven reverse bending state;

[0032] Fig. 9 A schematic diagram of the T-tube and the breathing tube in the breathing state provided by an embodiment of the present invention;

[0033] Fig.10 A schematic diagram of the T-tube and the breathing tube in the suction state provided by an embodiment of the present invention;

[0034] Fig.11 The embodiment of the present invention provides Fig. 9 A is an enlarged structural diagram of FIG.

[0035] Description of reference numerals:

[0036] 1. T-tube; 11. Clamping part; 12. Thread; 13. Cover; 131. Valve; 14. Elastic part; 15. Arc end; 16. Hollow layer; 161. Gas injection port; 17. Air bag; 18. Bump; 19. Blocking convex strip; 2. Fixing platform; 21. Glue; 3. Extension part; 31. Fixing plate; 32. Folding part; 33. Limiting part; 34. Clamp; 35. Main pipe; 351. Slide plate; 4. Breathing tube; 41. Diffusion chamber; 42. Elastic curved plate; 43. Fixed rib; 44. Partition; 45. Filter element; 5. Sliding condition; 300. Threaded ring. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1-11 As shown, a telescopic T-tube for laryngeal tracheal stenosis reconstruction comprises a T-tube 1 and a movably arranged breathing tube 4, wherein the T-tube 1 is divided into a breathing cavity and a sputum suction cavity by the breathing tube 4;

[0039] A switching unit for switching different chambers to communicate with the outside world includes a cover 13 disposed at a port of the breathing tube 4;

[0040] The extension part 3 disposed at the end of the T-tube 1 includes folding parts 32 arranged in a circumferential array, and the folding parts 32 are folded and contracted to shrink the diameter of the extension part 3;

[0041] It also includes a clamp 34 for keeping the extension part 3 in the retracted state.

[0042] Specifically, the T-tube 1 includes a straight tube and a cannula vertically arranged in the middle of the straight tube, and the suction cavity is coaxially arranged with the breathing cavity. The breathing tube 4 is located at the center of the T-tube 1 and encloses the breathing cavity. Sputum moves upward or downward in the throat under the action of gravity or the air pressure of coughing and wheezing, and will preferentially enter the suction cavity along the inner wall of the throat. The cover 13 blocks the suction cavity in the default state, so that the breathing cavity can be used normally, helping patients with stenosis of the throat to ventilate. The cover 13 is switched at regular intervals to block the breathing cavity and make the suction cavity unobstructed. The negative pressure mechanism is combined to suction sputum to avoid sputum accumulation.

[0043] The cover 13 in the above technology can be composed of two movable plugs that respectively block the suction cavity and the breathing cavity, and the corresponding movable plugs can be connected to the corresponding cavity openings as needed; or the end of the breathing tube 4 is extended by a section of the intubation tube, and the breathing cavity and the outside are connected through the side opening of the breathing tube 4. The cover 13 is coaxially sleeved on the breathing tube 4 and the end face covers the suction cavity port, and a protrusion that can be used to block the side opening is provided on the cover 13. In the default state, the cover 13 is located at the suction cavity port and blocks the suction cavity. At this time, the protrusion is staggered with the side opening of the breathing tube 4, so that the breathing tube 4 is connected to the outside. When suction is required, the protrusion blocks the side opening of the breathing tube 4. At this time, the breathing tube 4 no longer blocks the suction cavity port, so that different chambers are connected to the outside.

[0044] Furthermore, when implanting the device, surgical forceps are used to squeeze multiple folded portions 32 to drive the port of the extension portion 3 to contract. The port of the extension portion 3 has multiple clamps 34 in a circumferential array. When the port contracts, the clamps 34 are connected end to end and are fixed to each other under friction. At this time, surgical forceps are no longer needed for fixation. The operator can use one hand to squeeze the contracted extension portion 3 to open the narrow airway and place the device in the trachea. Subsequently, by suctioning sputum and injecting liquid medicine into the airway, the trachea is unobstructed and the extension portion 3 is no longer squeezed. The folded portion 32 unfolds and overcomes the friction of the clamp 34, and the extension portion 3 unfolds and supports the trachea.

[0045] In the above technology, the operator can use one hand to shrink the extension part 3 to squeeze open the narrow airway and place the device in the trachea. Compared with the conventional T-tube 1, the implantation is more convenient. Then, by suctioning the sputum and injecting liquid medicine into the airway, the trachea is unobstructed and the extension part 3 is no longer squeezed. The folded part 32 unfolds and overcomes the friction of the clamp 34, and the extension part 3 unfolds and supports the trachea.

[0046] As an embodiment further provided by the present invention, it also includes a fixing platform 2 arranged on the T-tube 1, and a rubber sticker 21 is arranged on the side of the fixing platform 2 facing the human throat.

[0047] Specifically, a circular groove is provided between the fixing platforms 2, and a thread 12 connected to the circular groove thread is provided on the cannula of the T-tube 1. The adhesive 21 is a double-sided adhesive and is glued to the fixing platform 2 through one side thereof. After the T-tube 1 is implanted into the trachea, the cannula and the fixing platform 2 are both located at the incision, and then the fixing platform 2 is rotated forward to make the fixing platform 2 approach the incision along the thread, and the incision is covered and protected by the fixing platform 2, and the adhesive 21 is pasted on the human neck to strengthen the fixation. When the adhesive 21 on the fixing platform 2 needs to be replaced, the fixing platform 2 is rotated in the opposite direction to make the fixing platform 2 away from the incision, the adhesive 21 on the fixing platform 2 is torn off and replaced with a new one, and then the fixing platform 2 is moved closer to the incision.

[0048] As another embodiment further provided by the present invention, the breathing tube 4 is slidably arranged relative to the T-tube 1, and a diffusion cavity 41 is arranged on a section extending toward the human throat.

[0049] Specifically, a partition 44 is fixedly provided on the breathing tube 4 for separating the interior of the T-tube 1 from the middle. The partition 44 is slidably arranged in the cannula through the keyway, and the partition 44 divides the straight tube into two upper and lower sections. By tilting the cannula, the end of the T-tube 1 can also be sucked. The inner diameter of the diffusion cavity 41 gradually expands in the direction from the outside to the throat, so that when the patient inhales through the cannula, the inhaled outside air will first enter the diffusion cavity 41 through the narrow breathing tube 4, and the speed of the airflow will gradually decrease, so as to avoid the mucosa in the patient's trachea from being dried out due to rapid inhalation, and maintain the moisture of the mucosa.

[0050] The diffusion chamber 41 is located at the incision of the patient and is automatically heated by the patient's body temperature. The temperature of the airflow in the diffusion chamber 41 rises, thereby preventing cold air from being directly inhaled into the throat and causing irritation.

[0051] As another embodiment further provided by the present invention, a filter element 45 is provided in the breathing tube 4 to prevent bacterial contamination.

[0052] Specifically, the filter element 45 is soaked in a sterilizing liquid that is harmless to the human body. When the patient inhales through the intubation tube, the inhaled air is humidified through the moistened filter element 45 and sterilized through the filter element 45 to prevent external bacteria from directly infecting the respiratory tract. When the patient exhales, the patient's exhaled air will also pass through the filter element 45 to the outside world, preventing the patient's own virus from spreading to the outside world.

[0053] As another embodiment further provided by the present invention, the switching unit further includes an elastic curved plate 42 for locking the breathing tube 4, and the elastic curved plate 42 is driven to bend in the reverse direction and pull the breathing tube 4.

[0054] Specifically, the structure of the elastic curved plate 42 is as follows: Figure 7 , Figure 8 The elastic curved plate 42 is movably arranged in the diffusion chamber 41. In the default state, the diffusion chamber 41 is located at the junction of the insertion tube and the straight tube, and the elastic curved plate 42 is closely attached to the inner wall of the straight tube close to the insertion tube under its own deformation, as shown in FIG. Fig. 9 As shown, at this time, the straight tube and the diffusion chamber 41 are connected, so that the breathing chamber is connected with the outside.

[0055] The breathing tube 4 is pressed in the direction of the straight tube. During this process, the two straight edges of the elastic curved plate 42 will abut against the inner wall of the straight tube, causing the straight edges to swing. The straight edges drive the elastic curved plate 42 to automatically bend in the opposite direction under the release of internal stress, and finally cling to the inner wall of the straight tube away from the intubation side. Fig.10As shown, the diffusion chamber 41 is provided with a fixed rib 43 for blocking the elastic curved plate 42. At this time, the elastic curved plate 42 pulls the breathing tube 4 to extend into the straight tube, so that the diffusion chamber 41 enters the straight tube and abuts against the inner wall of the straight tube.

[0056] As another embodiment further provided by the present invention, the extension portion 3 further includes a fixing plate 31 which is twisted in a spiral shape as the folding portion 32 is folded.

[0057] Specifically, the width of the fixed plate 31 decreases in the direction in which the straight tube extends to both sides, and a limiter 33 is fixedly provided at the narrowest part of the fixed plate 31, a spherical clamp 34 is fixedly provided at one end of the limiter 33, and a ball groove for accommodating the clamp 34 is provided at the other end. The port enclosed by the limiters 33 is grasped by surgical forceps, and then the surgical forceps are rotated and the limiters 33 are squeezed, so that multiple limiters 33 are close to each other, the clamps 34 are stuck in the ball grooves and fixed by friction, and the fixed plate 31 is twisted to form a bucket-shaped structure. The folding part 32 between the two limiters 33 is folded, wherein the folding part 32 is triangular, and the wide part is located on the same side as the limiter 33, and the wide part is used to provide a margin of activity when the limiter 33 is contracted and unfolded.

[0058] As another embodiment further provided by the present invention, a hollow layer 16 communicating with the folded portion 32 is disposed inside the T-tube 1 .

[0059] Specifically, it also includes a gas injection port 161 connected to the hollow layer 16, and the folded portion 32 is a hollow structure and connected to the hollow layer 16. The gas injection mechanism is used to inflate the gas injection port 161, and the gas enters the folded portion 32 along the hollow layer 16, so that the folded portion 32 is unfolded and filled, thereby driving the distance between the two fixing plates 31 to increase. When the folded portion 32 is unfolded, the friction resistance between the clamp 34 and the limiter 33 is overcome, so that the caliber of the extension portion 3 is increased and supports the inner wall of the trachea. At the same time, the filled folded portion 32 supports the extension portion 3 to prevent the extension portion 3 from contracting in the radial direction with the swallowing action.

[0060] As another embodiment further provided by the present invention, it also includes an air bag 17 which is arranged inside the T-tube 1 and is used to seal the breathing cavity.

[0061] Specifically, the airbag 17 has a convex block 18 corresponding to the diffusion cavity 41, and the airbag 17 is connected to the hollow layer 16. The longest side of the airbag 17 is provided with a blocking convex strip 19 for blocking the elastic curved plate 42. When the breathing tube 4 is pressed in the direction of the straight tube, the two straight edges of the elastic curved plate 42 will abut against the blocking convex strip 19, causing the straight edges to swing, and the straight edges drive the elastic curved plate 42 to automatically bend in the reverse direction under the release of internal stress, and finally cling to the inner wall of the straight tube away from the intubation side, as shown in FIG. Fig.10As shown, at this time, the elastic curved plate 42 pulls the breathing tube 4 to extend into the straight tube, so that the diffusion cavity 41 enters the straight tube and presses against the protrusion 18, the diffusion cavity 41 is blocked, and the air in the protrusion 18 enters the hollow layer 16, and then the folded portion 32 is unfolded and filled, further supporting the inner wall of the throat.

[0062] As another embodiment further provided by the present invention, a valve 131 is fixedly provided on the cover 13 and opens and closes during the switching process.

[0063] Specifically, the cover 13 is a spherical structure, the cover 13 is fixedly connected to the breathing tube 4, and the valve 131 is located in the middle of the sphere, that is, in the end of the breathing tube 4. In the default state, the diffusion cavity 41 is located at the junction of the cannula and the straight tube, and the elastic curved plate 42 is closely attached to the inner wall of the straight tube close to the cannula under its own deformation, so that the straight tube is connected with the diffusion cavity 41. Fig. 9 At this time, the end of the breathing tube 4 pushes the cover 13 toward the outside, so that the cover 13 remains in an expanded state. At this time, the position of the valve 131 and the end of the breathing tube 4 is a fulcrum. The valve 131 includes a free end and a fixed end fixedly connected to the cover 13. The fulcrum is located between the free end and the fixed end. When the breathing tube 4 pushes the valve 131, the fulcrum drives the free end to swing toward the outside, and the two free ends do not collide with each other, so that the breathing cavity is connected with the outside.

[0064] The cover 13 is pressed toward the straight tube. During this process, the two straight edges of the elastic curved plate 42 will abut against the inner wall of the straight tube, causing the straight edges to swing. The straight edges drive the elastic curved plate 42 to automatically bend in the opposite direction under the release of internal stress, and finally cling to the inner wall of the straight tube away from the insertion tube. Fig.10 As shown. At this time, the breathing tube 4 pulls the cover 13, so that the valve 131 is pulled by the fulcrum, and the free end swings toward the direction close to the straight tube, so that the free ends abut and block the breathing cavity. The diffusion cavity 41 is blocked by the airbag 17, so that the inside of the breathing cavity is closed, and the diffusion cavity 41 is staggered with the cannula, and the straight tube is connected with the cannula. At this time, the gap between the cannula and the outer wall of the breathing tube 4 is a sputum suction cavity, and the sputum suction cavity is sucked and discharged through the negative pressure mechanism.

[0065] As an embodiment further provided by the present invention, one end of the extension portion 3 adjacent to the T-tube 1 is a main pipe portion 35, and the end of the main pipe portion 35 is provided with a slide plate 351 distributed in a circumferential array, and one end of the T-tube 1 is fixedly provided with a slide condition 5 distributed in a circumferential array and slidably assembled with the slide plate 351 in a one-to-one correspondence;

[0066] The sliding assembly of the sliding condition 5 and the slide groove plate 351 has an extension limit position and a contraction limit position, and is located below the contraction limit position. The non-overlapping parts of the outer walls of the sliding condition 5 and the slide groove plate 351 are both provided with threaded wires, and also include a threaded ring 300 that is sleeved on the sliding condition 5 and the slide groove plate 351 and threadedly matched with the threaded wires.

[0067] Specifically, in the embodiment, the sliding fit between the slide plate 351 and the sliding condition 5 can make the length of the extension part 3 and the T-tube 1 variable, so as to achieve the adaptation of different throat lengths, that is, the use of people of different age groups. In the actual construction process, the threaded ring 300 is driven to rotate clockwise, so that the sliding condition 5 and the slide plate 351 are separated from each other, that is, the extension limit position. Similarly, the opposite is true.

[0068] It should be noted that silicone connectors are provided between multiple adjacent sliding conditions 5 and multiple slide groove plates 351 in the embodiment to ensure the integrity of the pipeline, and the elasticity of the silicone connector allows it to deform at the extreme position when extending and contracting to meet design requirements.

[0069] As another embodiment further provided by the present invention, the T-shaped tube 1 has an arc end 15 abutting against the sealing cover 13, and the sealing cover 13 is driven downward and blocked by the arc end 15 to become concave.

[0070] Specifically, an elastic member 14 is provided on the arc end 15 to maintain the cover 13 in the bulging state from the inside, and a clamping portion 11 for clamping the negative pressure mechanism is provided on the arc end 15. When the patient needs to suction sputum, the cover 13 is pressed, and the elastic curved plate 42 automatically bends in the opposite direction under the release of internal stress, and finally clings to the inner wall of the straight tube away from the intubation tube. At this time, the breathing tube 4 pulls the cover 13, so that the valve 131 is pulled by the fulcrum, and the free end swings toward the direction close to the straight tube, so that the free ends abut and block the breathing cavity, and at the same time, the outer edge of the cover 13 will be blocked by the arc end 15 and tilted upward, and at this time, the arc end 15 no longer supports the cover 13 from the inside, and a channel for suction by the negative pressure mechanism is formed between the arc end 15 and the cover 13.

[0071] Working principle: The port formed by the limiter 33 is held by surgical forceps, and then the surgical forceps are rotated and the limiter 33 is squeezed, so that the multiple limiters 33 are close to each other, the clamp 34 is clamped into the ball groove and fixed by friction, and the fixed plate 31 is twisted to form a bucket-shaped structure. The folding part 32 between the two limiters 33 is folded, wherein the folding part 32 is triangular, and the wide part is located on the same side as the limiter 33, and the wide part is used to provide the activity margin when the limiter 33 is contracted and expanded.

[0072] The operator can use one hand to squeeze the contracted extension part 3 to open the narrow airway and place the device in the trachea. The gas injection mechanism is used to inflate the gas injection port 161, and the gas enters the folded part 32 along the hollow layer 16, so that the folded part 32 is unfolded and filled, thereby increasing the distance between the two fixing plates 31. When the folded part 32 is unfolded, the friction resistance between the clamp 34 and the limiter 33 is overcome, so that the diameter of the extension part 3 is increased and it supports the inner wall of the trachea. At the same time, the filled folded part 32 supports the extension part 3.

[0073] In the default state, the diffusion cavity 41 is located at the junction of the insertion tube and the straight tube, and the elastic curved plate 42 is tightly attached to the inner wall of the straight tube close to the insertion tube under its own deformation, so that the straight tube is connected with the diffusion cavity 41. Fig. 9 At this time, the end of the breathing tube 4 pushes the cover 13 toward the outside, so that the cover 13 remains in an expanded state. At this time, the position of the valve 131 and the end of the breathing tube 4 is a fulcrum. The valve 131 includes a free end and a fixed end fixedly connected to the cover 13. The fulcrum is located between the free end and the fixed end. When the breathing tube 4 pushes the valve 131, the fulcrum drives the free end to swing toward the outside, and the two free ends do not collide with each other, so that the breathing cavity is connected with the outside.

[0074] When suction of sputum is required for the patient, the cover 13 is pressed, and the elastic curved plate 42 automatically bends in the opposite direction due to the release of internal stress, and finally fits tightly against the inner wall of the straight tube away from the intubation tube. At this time, the breathing tube 4 pulls the cover 13, so that the valve 131 is pulled by the fulcrum, and the free end swings toward the direction close to the straight tube, so that the free ends abut against and block the breathing cavity. At the same time, the outer edge of the cover 13 will be blocked by the arc end 15 and tilted upward. At this time, the arc end 15 no longer supports the cover 13 from the inside, and a channel for suction by the negative pressure mechanism is formed between the arc end 15 and the cover 13.

[0075] The diffusion chamber 41 enters the straight tube and presses against the protrusion 18 , the diffusion chamber 41 is blocked, and the air in the protrusion 18 enters the hollow layer 16 , and then the folded portion 32 is unfolded and filled, further supporting the inner wall of the throat.

[0076] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A telescopic T-tube for laryngeal tracheal stenosis reconstruction, comprising a T-tube (1), characterized in that: It comprises a movably arranged breathing tube (4), and the T-shaped tube (1) is divided into a breathing cavity and a sputum suction cavity by the breathing tube (4); A switching unit for switching different chambers to communicate with the outside world, comprising a sealing cover (13) arranged at a port of the breathing tube (4); The extension part (3) is arranged relative to the end of the T-shaped tube (1), and comprises folding parts (32) arranged in a circumferential array, and the folding parts (32) are folded and contracted to shrink the diameter of the extension part (3); It also includes a clamp (34) for keeping the extension part (3) in a retracted state.

2. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: It also comprises a fixing platform (2) arranged on the T-shaped tube (1), and a glue sticking (21) is arranged on the side of the fixing platform facing the human throat.

3. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: The breathing tube (4) is slidably arranged relative to the T-shaped tube (1), and a diffusion cavity (41) is arranged on a section extending toward the human throat.

4. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: A filter element (45) is arranged inside the breathing tube (4) to prevent bacterial contamination.

5. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: The switching unit also includes an elastic curved plate (42) for locking the breathing tube (4), and the elastic curved plate (42) is driven to bend in the reverse direction and pull the breathing tube (4).

6. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: The extension portion (3) further comprises a fixing plate (31) which is twisted in a spiral shape as the folding portion (32) is folded.

7. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: The T-shaped tube (1) is provided with a hollow layer (16) in communication with the folded portion (32).

8. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: It also includes an air bag (17) which is arranged inside the T-tube (1) and is used to seal the breathing cavity. A valve (131) which opens and closes during the switching process is fixedly arranged on the sealing cover (13).

9. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: The end of the extension portion (3) adjacent to the T-shaped tube (1) is a main tube (35), and the end of the main tube (35) is provided with a slide plate (351) distributed in a circumferential array, and one end of the T-shaped tube (1) is fixedly provided with a sliding condition (5) distributed in a circumferential array and slidably assembled with the slide plate (351) in a one-to-one correspondence; The sliding assembly of the sliding condition (5) and the sliding groove plate (351) has an extension limit position and a contraction limit position, and is located below the contraction limit position. The non-overlapping parts of the outer walls of the sliding condition (5) and the sliding groove plate (351) are both provided with threaded wires, and also include a threaded ring (300) which is sleeved on the sliding condition (5) and the sliding groove plate (351) and threadedly matched with the threaded wires.

10. The telescopic T-tube for laryngeal tracheal stenosis reconstruction according to claim 1, characterized in that: The T-shaped tube (1) has an arc end (15) abutting against the sealing cover (13), and the sealing cover (13) is driven downward and blocked by the arc end (15) to become concave.

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