Trachea cannula

Abstract

The invention relates to the technical field of medical instruments, in particular to a trachea cannula which comprises a main tube and an auxiliary tube, the auxiliary tube is communicated with the outer wall of the main tube, the main tube is used for being communicated with a breathing machine, the auxiliary tube is used for being communicated with a bronchoscope and comprises an inlet end and a tail end opening, and the tail end opening is located at the communication position of the main tube and the auxiliary tube. A sealing assembly used for sealing a gap between the bronchoscope and the auxiliary tube is arranged at the tail end opening. The sealing assembly comprises a sealing layer and a valve cover hinged to the tail end opening, and the inner wall of the auxiliary pipe is fixedly connected with a fixing ring. The fixed ring is slidably connected with a plurality of moving blocks in the circumferential direction, the sealing layer is fixedly connected to the fixed ring, and the moving blocks are fixedly connected with the inner wall of the sealing layer; a rotating ring is further rotationally matched with the inner wall of the auxiliary pipe, a plurality of arc-shaped grooves are formed in the rotating ring in the circumferential direction, and clamping blocks sliding in the arc-shaped grooves are fixedly connected to the bottoms of the moving blocks. Through the mechanical structure design that the valve cover triggers the transmission assembly to be in linkage with the sealing layer to be closed, the sealing layer wraps the outer wall of the bronchoscope, and a sealing barrier is formed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a tracheal tube. BACKGROUND

[0002] Tracheal intubation is an important technique in the medical environment for ensuring the patency of the patient's airway, suitable for general anesthesia, intensive care or emergency situations. It involves inserting a soft catheter, usually with a cuff, through the patient's mouth or nose into the trachea. This technique allows direct management of the patient's airway, provides mechanical ventilation support, and prevents aspiration.

[0003] In the prior art, for example, Mallinckrodt's tracheal tube, which is composed of a tracheal tube body, a 15mm connector, a conical cuff, an inflation tube, an indicator balloon, an inflation valve, a Murphy hole and an Evac suction tube. The product is a disposable product, sterilized with ethylene oxide, and the product is used for oral tracheal intubation for anesthesia, and in the case of an estimated intubation time of more than 24 hours. When it is necessary to clear due to the accumulation of a large amount of secretions on the cuff or tracheal infection, the Evac lumen can be used.

[0004] The above product, when the bronchoscope is inserted through the auxiliary channel, may cause the patient's airway to seep due to the gap between the outer wall of the bronchoscope and the inner wall of the channel. These secretions not only affect the operating field and increase the difficulty of operation, but also may reflux to the external environment or device interface along the gap between the bronchoscope and the auxiliary tube, thereby causing the risk of cross infection, even polluting the medical environment, endangering the safety of medical staff, therefore, it is necessary to propose a tracheal tube. SUMMARY

[0005] To solve the above problems, the present application provides a tracheal tube, which is a mechanical structure design that triggers the transmission assembly linkage sealing layer closure through the valve cover, so that the sealing layer wraps the outer wall of the bronchoscope, forming a sealed barrier. The flexible wrapping of the sealing layer can adapt to bronchoscopes of different diameters, and the sealing barrier can effectively reduce infection caused by the overflow of secretions and maintain a good operating field.

[0006] In order to achieve the above purpose, the technical scheme of the present application is as follows: a tracheal tube, comprising a main tube and an auxiliary tube, the auxiliary tube being in communication with the outer wall of the main tube, the main tube being used to communicate with a breathing machine, the auxiliary tube being used to communicate with a bronchoscope, the auxiliary tube comprising an inlet end and a distal port, the distal port being located at the communication between the main tube and the auxiliary tube, the distal port being provided with a sealing assembly for sealing the gap between the bronchoscope and the auxiliary tube.

[0007] The sealing assembly comprises a sealing layer and a valve cover hinged to the end port, and a fixed ring is fixedly connected to the inner wall of the auxiliary pipe; a plurality of moving blocks are slidably connected to the fixed ring along the circumference of the fixed ring, the sealing layer is fixedly connected to the fixed ring, and the moving blocks are all fixedly connected to the inner wall of the sealing layer; a rotating ring is also rotatably connected to the inner wall of the auxiliary pipe, a plurality of arc-shaped grooves are formed in the rotating ring along the circumference of the rotating ring, and a clamping block that slides in the arc-shaped groove is fixedly connected to the bottom of each moving block.

[0008] The inner wall of the auxiliary pipe is also provided with a transmission assembly for driving the rotating ring to rotate; the transmission assembly is also used to drive the sealing assembly to operate synchronously to seal the gap between the bronchoscope and the auxiliary pipe; when the bronchoscope pushes open the valve cover, the transmission assembly is started to drive the rotating ring to rotate.

[0009] The auxiliary pipe is also provided with a return assembly for driving the transmission assembly to reset; the moving block is also provided with an extraction assembly for sucking mucus.

[0010] The technical principle of the above scheme is as follows:

[0011] By inserting the main pipe and the auxiliary pipe into the trachea and using the main pipe for ventilation, when the bronchoscope needs to be used for operation, the bronchoscope is passed through the auxiliary pipe, and when the bronchoscope pushes open the valve cover, the transmission assembly is used to drive the rotating ring to rotate, and the rotating ring synchronously drives the clamping block to slide in the arc-shaped groove, so that the moving blocks are gathered in the middle. The sealing layer is driven by the moving blocks to form a seal between the bronchoscope and the auxiliary pipe, reducing the backflow of internal mucus. The extraction assembly can suck the mucus generated in the trachea, reducing the accumulation of secretions.

[0012] The above scheme has the following beneficial effects:

[0013] 1. The mechanical structure design of the sealing layer closed by the valve cover triggering the transmission assembly linkage, when the bronchoscope is inserted into the auxiliary pipe and pushes open the valve cover, the transmission assembly drives the rotating ring to rotate immediately, the arc-shaped groove drives the moving blocks to gather towards the center along the fixed ring through the clamping block, so that the sealing layer wraps the outer wall of the bronchoscope, forming a sealing barrier. This design realizes the synchronous operation of the main pipe continuous ventilation and the auxiliary pipe operation. At the same time, the flexible wrapping of the sealing layer can adapt to bronchoscopes of different diameters without manual adjustment, and the sealing barrier can effectively reduce the infection caused by the overflow of secretions and maintain a good operation field, which is suitable for the operation of patients with respiratory infectious diseases.

[0014] 2. The integrated extraction assembly and sealing action are started synchronously, and when the sealing layer is attached to the bronchoscope, the mucus in the trachea is sucked through the negative pressure channel built in the auxiliary pipe. The passive anti-backflow is upgraded to active cleaning, reducing the blurred vision caused by the accumulation of secretions in the traditional intubation, which not only ensures a clear surgical field, but also reduces the corrosion of mucus to the components, prolonging the service life of the device. In addition, the independent channel design of the extraction assembly avoids interference with the ventilation airflow, ensuring that the main and auxiliary cavities do not affect each other.

[0015] 3、The back position assembly automatically drives the rotating ring to reverse reset after the bronchoscope is withdrawn, the movement block resets along the arc-shaped groove, the sealing layer and the valve cover are synchronously closed, and manual intervention is not required.

[0016] Further, the transmission assembly comprises a push rod slidingly fitted in the side wall of the secondary pipe, and the outer wall of the rotating ring is provided with a spiral groove; the push rod is fixedly connected with a top block sliding in the spiral groove; the valve cover is fixedly connected with a cam on the hinge shaft of the secondary pipe; and the protruding part of the cam is in contact with the push rod to lift the push rod.

[0017] Beneficial effects: through the mechanical linkage design of the cam, the push rod and the spiral groove, the sealing action and the instant response of the bronchoscope insertion operation are realized. When the bronchoscope pushes open the valve cover, the hinge shaft drives the cam to rotate, the protruding part of the cam pushes the push rod to slide along the side wall of the secondary pipe, the top block slides in the spiral groove and drives the rotating ring to rotate, and then the movement block is driven by the arc-shaped groove to gather the sealing layer synchronously. The structure does not require an external power source, is compatible with adult and child patient needs, and improves the safety and universality of clinical operation.

[0018] Further, the back position assembly comprises a torsional spring and a tension spring, the torsional spring is sleeved on the hinge shaft of the valve cover and the secondary pipe, one end of the tension spring is fixedly connected in the side wall of the secondary pipe, and the other end of the tension spring is fixedly connected with the outer wall of the push rod.

[0019] Beneficial effects: through the cooperative design of the torsional spring and the tension spring, automatic reset is realized; when the valve cover is pushed open, elastic potential energy is accumulated, and after the bronchoscope is withdrawn, the energy is released to drive the valve cover to automatically close; the tension spring connects the push rod and the side wall of the secondary pipe, and after the external force disappears, the push rod is pulled back to reset, synchronously driving the rotating ring to reverse rotate to make the sealing layer return to the original state. The double-spring mechanical reset structure does not require an external power source, ensures that the valve cover and the sealing layer return to the original state, simplifies the device maintenance process, and improves the convenience and reliability of clinical use.

[0020] Further, the extraction assembly comprises a plurality of transmission cylinders, the transmission cylinders are fixedly connected to the fixed ring, and the inner walls of the transmission cylinders are slidingly fitted with movable plates; the movable plates are fixedly connected with connecting rods, and the ends of the connecting rods away from the movable plates are fixedly connected with the movement blocks outside the transmission cylinders.

[0021] The side of the transmission cylinder away from the connecting rod is communicated with an input pipe and an output pipe, the connection parts of the input pipe and the output pipe with the transmission cylinder are communicated with one-way valves; the ends of the input pipes away from the transmission cylinders are communicated with the tail end ports, and the ends of the output pipes away from the transmission cylinders are communicated outside the inlet end.

[0022] Beneficial effects: through the mechanical linkage of the moving block and the movable plate, the mucus is cleaned; when the moving blocks gather together, the connecting rod drives the movable plate to move, and the mucus in the auxiliary pipe is sucked into the input pipe through the one-way valve; when the moving blocks reset, the movable plate moves, and the mucus is discharged to the outside of the auxiliary pipe through the output pipe. This design does not require an additional power source, and the linkage power of the movable plate movement is used to complete the suction simultaneously. The mucus is cleaned while being sealed, the surgical field is clear, and the operation safety and convenience are improved.

[0023] Further, the output pipe extends to the outside of the inlet end and is connected with a liquid collecting bag for collecting liquid.

[0024] Beneficial effects: through the design of the liquid collecting bag, the mucus can be collected and stored, and the capacity of the independent cavity design can be controlled, which facilitates quick disassembly and replacement, ensures timely processing, and improves the clarity of the surgical field and the operation continuity of the mucus.

[0025] Further, the sealing layer is made of an elastic material, and a sealing lip is fixedly connected to the outer wall of the sealing layer.

[0026] Beneficial effects: the mucus sealing layer is made of an elastic material and has a sealing lip on the outer wall, which can form multiple seals through the deformation of the material itself and the structure of the lip, reduce the gap at the end of the auxiliary pipe, improve the airway sealing performance, and the elastic lip design has a buffering effect, which can reduce the friction damage to the outer wall of the bronchoscope, adapt to the insertion requirements of instruments of different diameters, and enhance the operation adaptability and use safety.

[0027] Further, a pull wire is fixedly connected to the hinge shaft of the flap cover and the auxiliary pipe, and the end of the pull wire away from the flap cover extends to the outside of the auxiliary pipe.

[0028] Beneficial effects: the flap cover can be opened and closed by external pulling, ensuring smooth and unobstructed mirror withdrawal; after the bronchoscope is withdrawn, the pull wire can maintain the flap in an open state, allowing the auxiliary pipe to be connected to external breathing equipment for ventilation function. This structure simplifies the intraoperative operation steps, reduces the interference of instrument interaction, and improves the operation safety and ventilation stability through mechanical pulling control, which is suitable for complex surgical scenarios that require repeated insertion and withdrawal of the mirror.

[0029] Further, the outer wall of the main pipe is also provided with a marking assembly for auxiliary positioning, which comprises:

[0030] A fluorescent marker ring is sleeved on the outer wall of the main pipe and located at the inlet end of the auxiliary pipe, which is used to identify the intubation position in a dark environment.

[0031] A depth scale is printed axially along the main pipe, which is used to indicate the depth of the intubation into the airway.

[0032] A direction indicating arrow is printed on the outer wall of the auxiliary pipe, which is used to point to the opening direction of the flap cover to assist the operator in quickly identifying the function end of the auxiliary pipe.

[0033] Beneficial effects: The fluorescent label ring emits a clear fluorescent signal in a dark surgical environment, helping medical staff quickly identify the insertion position of the main tube and avoiding positioning deviation caused by unclear vision; the depth scale line shows the length of the intubation into the airway, facilitating the control of the insertion depth and reducing the risk of over-deep damage to the lung tissue or over-shallow extraction. The direction indicating arrow can quickly guide the operator to identify the opening direction of the valve cover, ensuring that the bronchoscope and other instruments can be inserted along the correct path.

[0034] Further, the main tube outer wall is further fixedly connected with a positioning capsule, the positioning capsule is communicated with a conveying piece; the positioning capsule outer wall is fixedly connected with a pressure sensor, the pressure sensor is electrically connected with a controller; the controller is used for acquiring pressure information sent by the pressure sensor, and controls the conveying piece to open and close based on the pressure information.

[0035] Beneficial effects: The pressure sensor real-time positioning capsule pressure change, the controller automatically opens and closes the conveying piece through the preset logic, dynamically maintains the positioning capsule pressure in the safe interval. The positioning capsule is adhered to the airway wall after inflation, forming a stable anchoring effect, cooperating with the automatic pressure compensation function, reducing the intraoperative nursing intervention. Improve the airway sealing and stability during mechanical ventilation, reduce the incidence of complications, suitable for long-term airway management of critically ill patients.

[0036] Further, the positioning capsule outer side is further sleeved with an adsorption layer, the adsorption layer inside is communicated with an extraction piece; the controller is used for controlling the extraction piece to run.

[0037] Beneficial effects: The adsorption layer is wrapped on the outer side of the positioning capsule, the controller forms a local negative pressure through the extraction piece to suck the liquid contained in the adsorption layer, so that it is adhered to the airway, enhances the anti-skid effect while reducing the pressure on the mucosa. The negative pressure adsorption can adapt to the shape change of the airway wall, cooperate with the pressure regulation of the positioning capsule, form a double protection, effectively reduce the intubation displacement. In addition, the adsorption layer can adsorb airway secretions, improve the safety and adaptability of long-term intubation.

[0038] Additional aspects and advantages of the application will be described in part in the following description, some of which will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is the axonometric view of the tracheal tube of the application.

[0040] Figure 2 It is the cross-sectional view of the auxiliary pipe in the application. Figure 1

[0041] Figure 3 It is the installation axonometric view of the sealing layer in the application. Figure 2 ​​

[0042] Figure 4 For the present invention Figure 2 Isometric view of the installation of the moving block.

[0043] Figure 5 For the present invention Figure 1 Isometric view of the installation of the middle card block.

[0044] Figure 6 For the present invention Figure 1 A cross-sectional view of the middle transmission cylinder.

[0045] Figure 7 For the present invention Figure 2 Enlarged view of section A.

[0046] The reference numerals in the accompanying drawings of the instruction manual include: 1. Main tube; 2. Secondary tube; 3. Sealing layer; 4. Valve cover; 5. Fixing ring; 6. Moving block; 7. Rotating ring; 8. Locking block; 9. Push rod; 10. Top block; 11. Cam; 12. Tension spring; 13. Movable plate; 14. Connecting rod; 15. Collection bag; 16. Positioning bladder; 17. Transfer tube. Detailed Implementation

[0047] The following detailed description illustrates the specific implementation method:

[0048] Example 1, as shown in the attached document Figure 1 As shown: An endotracheal tube includes a main tube 1 and a secondary tube 2. In this embodiment, both the main tube 1 and the secondary tube 2 are made of flexible material. The secondary tube 2 is connected to the outer wall of the main tube 1. The main tube 1 is used to connect to a ventilator, and the secondary tube 2 is used to connect to a bronchoscope. The secondary tube 2 includes an inlet end and a terminal end. The terminal end is located at the connection between the main tube 1 and the secondary tube 2. The terminal end is provided with a sealing component for sealing the gap between the bronchoscope and the secondary tube 2.

[0049] Combination Figure 2 and Figure 3 As shown, the sealing assembly includes a sealing layer 3 and a valve cover 4 hinged to the end port. The sealing layer 3 is made of an elastic material; in this embodiment, medical-grade silicone is selected. A sealing lip is fixedly bonded to the outer wall of the sealing layer 3. Multiple seals are formed through the material's own deformation and the lip structure, reducing the gap at the end port of the secondary tube 2 and improving airway sealing. The elastic lip design also has a buffering effect, reducing frictional damage to the outer wall of the bronchoscope. It also adapts to the insertion requirements of instruments of different diameters, enhancing operational adaptability and safety. A fixing ring 5 is fixedly bonded to the inner wall of the secondary tube 2. Several moving blocks 6 are slidably connected to the fixing ring 5 along its circumference. The sealing layer 3 is fixedly bonded to the fixing ring 5, and all moving blocks 6 are fixedly bonded to the inner wall of the sealing layer 3. A rotating ring 7 is also rotatably fitted to the inner wall of the secondary tube 2. Several arc-shaped grooves are opened along the circumference of the rotating ring 7. Each moving block 6 has a screw-fixed locking block 8 located within the arc-shaped groove (e.g., Figure 4 andFigure 5 (As shown).

[0050] The inner wall of the secondary tube 2 is also equipped with a transmission assembly for driving the rotating ring 7 to rotate; the transmission assembly is also used to drive the sealing assembly to operate synchronously to seal the gap between the bronchoscope and the secondary tube 2; when the bronchoscope opens the valve cover 4, the transmission assembly is activated to drive the rotating ring 7 to rotate. The secondary tube 2 is also equipped with a return assembly for driving the transmission assembly to reset; the moving block 6 is also equipped with an extraction assembly for aspirating mucus.

[0051] Combination Figure 7 As shown, the transmission assembly includes a push rod 9 that slides within the side wall of the secondary tube 2, and a spiral groove on the outer wall of the rotating ring 7; a top block 10 that slides within the spiral groove is fixedly connected to the push rod 9 by screws; a cam 11 is fixedly engaged with the hinge shaft between the valve cover 4 and the secondary tube 2; when the protrusion of the cam 11 contacts the push rod 9, it can lift the push rod 9.

[0052] The return assembly includes a torsion spring and a tension spring 12. The torsion spring is sleeved on the hinge shaft between the valve cover 4 and the secondary tube 2. One end of the tension spring 12 is fixedly bonded to the inside of the side wall of the secondary tube 2, and the other end of the tension spring 12 is fixedly bonded to the outer wall of the push rod 9.

[0053] Specifically, with Figure 7 For example, when the bronchoscope is inserted and opens the valve cover 4, the valve cover 4 rotates around the hinge axis on the outside of the secondary tube 2, causing the cam 11 to rotate synchronously. The protrusion of the cam 11 gradually contacts the push rod 9 and pushes it to slide axially along the side wall of the secondary tube 2. At this time, the tension spring 12 is stretched and stores force, and the top block 10 on the push rod 9 slides along the spiral groove on the outer wall of the rotating ring 7. Through the guiding effect of the spiral groove, the rotating ring 7 is driven to rotate around the axis of the secondary tube 2.

[0054] When the bronchoscope is removed, the valve cover 4 loses external force, the torsion spring releases its elastic force and drives the valve cover 4 and cam 11 to rotate in opposite directions to reset, the tension spring 12 contracts and pulls the push rod 9 to move axially back, the top block 10 slides in the opposite direction along the spiral groove, so that the rotating ring 7 rotates back to the initial position, completing the linkage cycle of opening and resetting.

[0055] Combination Figure 6 As shown, the extraction assembly includes several transmission cylinders 17, all of which are fixedly bonded to the fixing ring 5. Each transmission cylinder 17 has a movable plate 13 slidably fitted on its inner wall. Each movable plate 13 has a connecting rod 14 fixedly bonded to it, and the end of the connecting rod 14 away from the movable plate 13 extends to the outside of the transmission cylinder 17 and is fixedly connected to the moving block 6 with a screw.

[0056] The transmission cylinder 17 is communicated with an input pipe and an output pipe away from one side of the connecting rod 14, and the input pipe and the output pipe are communicated with one-way valves at the connection with the transmission cylinder 17. In the embodiment, the one-way valves are used to guide the fluid to flow into the transmission cylinder 17 from the input pipe and then flow out from the output pipe. The end of the input pipe away from the transmission cylinder 17 is communicated with the outside of the end port, and the end of the output pipe away from the transmission cylinder 17 is communicated with the outside of the inlet end. The output pipe extends to the outside of the inlet end and is communicated with a liquid collecting bag 15 for collecting liquid.

[0057] Specifically, when the moving block 6 moves axially, the connecting rod 14 drives the movable plate 13 to slide reciprocatingly in the transmission cylinder 17. When the movable plate 13 moves away from the input pipe, the space in the transmission cylinder 17 increases to form negative pressure, the one-way valve of the input pipe opens, and the impurities and viscous liquid adhered to the inner wall of the main pipe 1 are sucked into the transmission cylinder 17 through the input pipe. When the movable plate 13 moves reversely to compress the space in the transmission cylinder 17, the pressure rises to open the one-way valve of the output pipe, and the fluid in the transmission cylinder 17 is pressed into the liquid collecting bag 15 through the output pipe. Through the design of the liquid collecting bag 15, the viscous liquid can be collected and stored to absorb the viscous liquid. The independent cavity design has controllable capacity, is convenient for quick disassembly and replacement, ensures timely treatment, and improves the clarity of the surgical field and the continuity of the viscous liquid.

[0058] The outer wall of the main pipe 1 is further provided with a marking assembly for auxiliary positioning, which includes a fluorescent marking ring, a depth scale line and a direction indicating arrow.

[0059] The fluorescent marking ring is sleeved on the outer wall of the main pipe 1 and located at the inlet end of the auxiliary pipe 2, which is used to identify the position of the cannula in a dark light environment. The depth scale line is printed axially along the main pipe 1, which is used to indicate the depth of the cannula into the airway. The direction indicating arrow is printed on the outer wall of the auxiliary pipe 2, which is used to point to the opening direction of the flap cover 4 to assist the operator to quickly identify the functional end of the auxiliary pipe 2.

[0060] Specifically, the fluorescent marking ring emits a clear fluorescent signal in a dark light surgical environment, which helps medical staff to quickly identify the insertion position of the main pipe 1, and avoids positioning deviation caused by unclear vision. The depth scale line displays the length of the cannula into the airway, which is convenient for controlling the insertion depth and reducing the risk of over-deep injury to lung tissue or over-shallow extraction. The direction indicating arrow can quickly guide the operator to identify the opening direction of the flap cover 4, so that the bronchoscope and other instruments can be inserted along the correct path.

[0061] The outer wall of the main pipe 1 is further fixedly bonded with a positioning capsule 16, which is communicated with a conveying member. In the embodiment, the conveying member is a gas pump, which is communicated with the gas pump through an external pipeline. The outer wall of the positioning capsule 16 is fixedly bonded with a pressure sensor, and the pressure sensor is electrically connected with a controller. The controller is used to acquire the pressure information sent by the pressure sensor and control the opening and closing of the conveying member based on the pressure information.

[0062] Specifically, the pressure sensor real-time locates the pressure change of the positioning capsule 16, and the controller automatically opens and closes the conveying member through preset logic to dynamically maintain the pressure of the positioning capsule 16 in the safe interval. After the positioning capsule 16 is inflated, it is attached to the airway wall to form a stable anchoring effect, and cooperates with the automatic pressure compensation function to reduce the nursing intervention during the operation. The airway sealing and stability during mechanical ventilation are improved, the incidence of complications is reduced, and it is suitable for long-term airway management of critically ill patients.

[0063] The positioning capsule 16 is further sleeved with an adsorption layer, and the adsorption layer is communicated with a suction member. In the embodiment, the suction member is a water pump, which is communicated with the water pump through an external pipeline; and the controller is used for controlling the operation of the suction member. Specifically, the adsorption layer is wrapped outside the positioning capsule 16, the controller forms a local negative pressure through the suction member to suck the liquid contained in the adsorption layer, so that it is attached to the airway, enhances the anti-skid effect, and reduces the pressure on the mucosa. The negative pressure adsorption can adapt to the shape change of the airway wall, cooperates with the pressure regulation of the positioning capsule 16 to form a double protection, and effectively reduces the displacement of the intubation. In addition, the adsorption layer can adsorb airway secretions to improve the safety and adaptability of long-term intubation.

[0064] The specific implementation process is as follows:

[0065] Firstly, the main pipe 1 is placed inside the airway, the positioning capsule 16 is inflated by the air pump, the pressure sensor real-time monitors the pressure, and the controller dynamically adjusts the air pump to open and close to maintain the pressure stable, so as to ensure that the positioning capsule 16 is closely attached to the airway wall; at the same time, the controller starts the water pump to form a negative pressure on the adsorption layer, so that it further adsorbs the airway mucus, and cooperates with the positioning capsule 16 to form a double fixation of active anchoring and passive adsorption, and the adsorption layer synchronously adsorbs the airway secretions.

[0066] When bronchoscopy operation is needed, the bronchoscope is inserted through the inlet end of the auxiliary pipe 2, and when the bronchoscope reaches the end port and pushes open the flap cover 4, the flap cover 4 rotates outwardly around the hinge shaft of the auxiliary pipe 2, driving the fixed cam 11 to rotate synchronously. The convex part of the cam 11 gradually contacts and pushes the push rod 9 to slide axially along the side wall of the auxiliary pipe 2, at this time the tension spring 12 is stretched to store energy, and the top block 10 on the push rod 9 slides along the spiral groove on the outer wall of the rotating ring 7, and drives the rotating ring 7 to rotate around the axis of the auxiliary pipe 2 through the guiding action of the spiral groove.

[0067] When the rotating ring 7 rotates, the arc-shaped groove arranged circumferentially thereof drives the moving block 6 to slide along the fixed ring 5 (shrinks to the center) through the clamping block 8, and the moving block 6 synchronously pulls the flexible sealing layer 3 to tighten, so that the sealing layer 3 is tightly attached to the outer wall of the bronchoscope, realizing dynamic sealing of the gap. Figure 4 For example, when the top block 10 is pushed by the push rod 9 to make the rotating ring 7 rotate clockwise, the clamping block 8 gradually moves the center together through the arc-shaped groove, so that the moving block 6 synchronously moves to the center.

[0068] When the moving block 6 slides, the movable plate 13 in the transmission cylinder 17 is driven by the connecting rod 14 to move away from the input pipe, the space in the transmission cylinder 17 increases to form negative pressure, the input pipe one-way valve opens (the output pipe one-way valve closes), and the mucus or secretion in the auxiliary pipe 2 is sucked into the transmission cylinder 17 through the input pipe, thereby reducing the obstruction to the bronchoscope view.

[0069] When the bronchoscope is withdrawn, the valve cover 4 loses external force, the torsional spring releases elastic force to drive the valve cover 4 to rotate reversely with the cam 11, the tension spring 12 is retracted to pull the push rod 9 to move axially back, the top block 10 slides reversely along the spiral groove to make the rotating ring 7 rotate back to the initial position. During the resetting of the rotating ring 7, the arc-shaped groove pushes the moving block 6 to slide outward along the fixed ring 5 through the clamping block 8, and the sealing layer 3 returns to the relaxed state; at the same time, the movable plate 13 is reset under the driving of the connecting rod 14, and the liquid in the transmission cylinder 17 is transported to the liquid collection bag 15 through the output pipe for storage.

[0070] The embodiment integrates dynamic sealing, synchronous suction, accurate positioning and multiple fixing modes to improve the safety and stability of airway management. The flexible sealing layer 3 cooperates with the retraction design of the moving block 6 to improve the sealing efficiency of the gap between the bronchoscope and the auxiliary pipe 2.

[0071] Embodiment 2 differs from the above embodiment in that a pull wire is further sleeved on the hinge shaft of the valve cover 4 and the auxiliary pipe 2, and the end of the pull wire away from the valve cover 4 extends to the outside of the auxiliary pipe 2.

[0072] The specific implementation process is as follows: the opening and closing of the valve cover 4 can be controlled by external pulling, ensuring smooth and unobstructed mirror withdrawal; after the bronchoscope is withdrawn, the pull wire can maintain the valve cover in an open state, so that the auxiliary pipe 2 can be connected to an external breathing device for ventilation function. The structure simplifies the intraoperative operation steps, reduces the interference of instrument interaction, realizes control through mechanical pulling, improves the operation safety and ventilation stability, and is suitable for complex surgical scenarios that require repeated insertion and withdrawal of the bronchoscope.

[0073] Obviously, the above embodiments are only examples for clearly illustrating, and not limiting the embodiments. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A tracheal cannula comprising a main tube (1) and a sub-tube (2) which is communicated to the outer wall of the main tube (1), the main tube (1) is used to communicate with a breathing machine, and the sub-tube (2) is used to communicate with a tracheal scope, characterized in that, The auxiliary pipe (2) comprises an inlet end and a terminal port, the terminal port is located at the communication position of the main pipe (1) and the auxiliary pipe (2), and the terminal port is provided with a sealing assembly for sealing the gap between the bronchoscope and the auxiliary pipe (2); The sealing assembly comprises a sealing layer (3) and a valve cover (4) hinged to the terminal port, and the inner wall of the auxiliary pipe (2) is fixedly connected with a fixed ring (5); a plurality of moving blocks (6) are slidably connected to the fixed ring (5) in the circumferential direction of the fixed ring (5), the sealing layer (3) is fixedly connected to the fixed ring (5), and the moving blocks (6) are fixedly connected to the inner wall of the sealing layer (3); the inner wall of the auxiliary pipe (2) is further rotationally connected with a rotating ring (7), the rotating ring (7) is provided with a plurality of arc-shaped grooves in the circumferential direction of the rotating ring (7), and the bottom of each moving block (6) is fixedly connected with a clamping block (8) that slides in the arc-shaped groove; The inner wall of the auxiliary pipe (2) is further provided with a transmission assembly for driving the rotating ring (7) to rotate; the transmission assembly is also used to drive the sealing assembly to operate synchronously to seal the gap between the bronchoscope and the auxiliary pipe (2); when the bronchoscope opens the valve cover (4), the transmission assembly is started to drive the rotating ring (7) to rotate; The auxiliary pipe (2) is further provided with a return assembly for driving the transmission assembly to return; the moving block (6) is further provided with an extraction assembly for sucking mucus.

2. The tracheal tube according to claim 1, wherein The transmission assembly comprises a push rod (9) that is slidably connected to the inner wall of the side wall of the auxiliary pipe (2), and the outer wall of the rotating ring (7) is provided with a spiral groove; the push rod (9) is fixedly connected with a top block (10) that slides in the spiral groove, and the hinge shaft of the valve cover (4) and the auxiliary pipe (2) is fixedly connected with a cam (11); when the protruding part of the cam (11) is in contact with the push rod (9), the push rod (9) can be lifted up.

3. The tracheal tube according to claim 1, wherein The return assembly comprises a torsion spring and a tension spring (12), and the torsion spring is sleeved on the hinge shaft of the valve cover (4) and the auxiliary pipe (2); one end of the tension spring (12) is fixedly connected to the inner wall of the side wall of the auxiliary pipe (2), and the other end of the tension spring (12) is fixedly connected to the outer wall of the push rod (9).

4. The tracheal tube of claim 1, wherein, The extraction assembly comprises a plurality of transmission cylinders (17), the transmission cylinders (17) are fixedly connected to the fixed ring (5), the inner wall of each transmission cylinder (17) is slidably connected with a movable plate (13), the movable plate (13) is fixedly connected with a connecting rod (14), and one end of the connecting rod (14) away from the movable plate (13) is fixedly connected with the moving block (6) outside the transmission cylinder (17); The side of the transmission cylinder (17) away from the connecting rod (14) is communicated with an input pipe and an output pipe, and the connection position of the input pipe and the output pipe with the transmission cylinder (17) is communicated with a one-way valve; one end of the input pipe away from the transmission cylinder (17) is communicated with the terminal port, and one end of the output pipe away from the transmission cylinder (17) is communicated with the outside of the inlet end.

5. The tracheal tube according to claim 4, wherein, The output pipe extending to the outside of the inlet end is communicated with a liquid collecting bag (15) for collecting liquid.

6. The tracheal tube according to claim 4, wherein The sealing layer (3) is made of elastic material, and the outer wall of the sealing layer (3) is fixedly connected with a sealing lip.

7. The tracheal tube of claim 1, wherein, The hinge shaft of the valve cover (4) and the auxiliary pipe (2) is further fixedly connected with a pull wire, and one end of the pull wire away from the valve cover (4) extends to the outside of the auxiliary pipe (2).

8. The tracheal tube of claim 1, wherein, The outer wall of the main pipe (1) is further provided with a marking assembly for assisting positioning, and the marking assembly comprises: A fluorescent label ring is sleeved on the outer wall of the main tube (1) and located at the inlet end of the auxiliary tube (2), which is used to identify the intubation position in a dark environment. A depth scale is printed along the axial direction of the main tube (1) and is used to indicate the depth of the intubation into the airway. A direction indicating arrow is printed on the outer wall of the auxiliary tube (2) and is used to indicate the opening direction of the valve cover (4) to help the operator quickly identify the functional end of the auxiliary tube (2).

9. The tracheal tube according to claim 8, wherein, The outer wall of the main tube (1) is further fixedly connected with a positioning capsule (16), and the positioning capsule (16) is communicated with a conveying member; the outer wall of the positioning capsule (16) is fixedly connected with a pressure sensor, and the pressure sensor is electrically connected with a controller; the controller is used to acquire the pressure information sent by the pressure sensor and control the opening and closing of the conveying member based on the pressure information.

10. The tracheal tube according to claim 9, wherein, The outer side of the positioning capsule (16) is further sleeved with an adsorption layer, and the inside of the adsorption layer is communicated with a pumping member; the controller is used to control the operation of the pumping member.

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