Flexible implantation bronchoscope tube

Abstract

The flexible implantation bronchoscope tube comprises a bronchoscope tube body and a soft guide tube movably arranged in a cavity of the bronchoscope tube body in a sleeved mode, the head side of the guide tube extends out of an opening in the head side of the bronchoscope tube body by at least 30 mm, and the outer side wall of the portion, extending out of the opening in the head side of the bronchoscope tube body, of the guide tube body is provided with a flexible transition section transitioning from the outer wall of the guide tube body to the outer wall of the opening in the head side of the bronchoscope tube body. After being deformed, the transition section passes through the inner cavity of the bronchoscope tube and is separated from the opening in the tail side of the bronchoscope tube; a sealed air bag is arranged at the head of the bronchoscope tube, and a ventilation operation valve is arranged at a tail opening to form an instrument imbedding and ventilation interface; the endotracheal intubation device is used for an endotracheal interventional operation, small in intubation injury, capable of keeping ventilation sealing during the operation and implementing mechanical ventilation, simple in structure, high in practicability, safe and reliable.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a flexible bronchoscope tube. Background Technology

[0002] Currently, rigid bronchoscopes used in clinical practice are made of thick metal tubes. Their use often requires the collaboration of doctors from multiple disciplines, including respiratory medicine, anesthesiology, and surgery. They have irreplaceable advantages in airway foreign body removal, airway stenosis treatment, and complex lung surgeries.

[0003] Rigid bronchoscopes have a larger diameter and are harder, making them more prone to damaging the mucous membranes of the mouth, throat, and trachea during insertion, leading to discomfort such as bleeding, edema, and pain. The airway is inherently fragile, and this damage can be more severe in patients with inflammation. Oral insertion increases the risk of tooth damage. Insertion is difficult in patients with narrow oral or pharyngeal spaces or protruding teeth, increasing the risk of damage to teeth, lips, vocal cords, and airway, and may even prevent the procedure from being completed.

[0004] Rigid bronchoscopes typically require general anesthesia. The rigid metal tubes cannot be fitted with a sealing cuff, resulting in poor sealing during mechanical ventilation. This not only makes gas inhalation anesthesia unsuitable (due to anesthetic gas leakage), but also prevents the use of conventional mechanical ventilation strategies (tidal volume VT 8-10 ml / kg; ventilation rate f 10-15 breaths / min). Only high-frequency ventilation (open ventilation; f 60-100 breaths / min) can be employed. High-frequency ventilation greatly increases the risk of hypoxia or carbon dioxide accumulation. Furthermore, with the patient's airway open, oral secretions can easily flow into the airway, leading to aspiration and significantly increasing the risks associated with anesthesia.

[0005] With the continuous advancement of medical technology, doctors have become more proficient in operating rigid bronchoscopes and managing anesthesia and respiratory function. However, to improve the effectiveness of high-frequency ventilation, medical staff often perform numerous sealing procedures, such as packing gauze into the patient's mouth, applying surgical tape around the rigid bronchoscope around the lips, and pinching the patient's nostrils closed. Despite these efforts, the effectiveness remains extremely limited. The operation and anesthesia for rigid bronchoscopes remain high-risk procedures. There is an urgent clinical need for an alternative to rigid bronchoscopes that are easy to insert, cause minimal damage, and provide safe respiratory management. Summary of the Invention

[0006] The purpose of this invention is to provide a flexible tracheoscopic tube to solve the problems mentioned in the background art.

[0007] This invention provides the following technical solution: a flexible bronchoscope tube, comprising a bronchoscope tube for endoscopic procedures within the airway and a flexible guide tube movably fitted within the lumen of the bronchoscope tube. The rigidity of the bronchoscope tube is greater than that of the guide tube. The tail end of the guide tube extends beyond the tail end opening of the bronchoscope tube, and the head end of the guide tube extends at least 30 mm beyond the head end opening of the bronchoscope tube. The cross-sectional area of ​​the guide tube head end is 15-60 mm smaller than the cross-sectional area of ​​the head end opening of the bronchoscope tube. 2 The outer wall of the guide tube extending from the bronchoscope head opening is provided with a flexible transition section that transitions from the outer wall of the guide tube to the outer wall of the bronchoscope head opening. After deformation, the transition section passes through the inner lumen of the bronchoscope tube and exits from the bronchoscope tail opening.

[0008] Furthermore, the bronchoscope tube includes a flexible tube and a rigid tube with a rigid support spring embedded in its inner wall.

[0009] Furthermore, a sealing airbag is provided on the outer wall of the bronchoscope tube head section, and an inflation port is provided at the tail end of the bronchoscope tube, which is connected to the sealing airbag.

[0010] Furthermore, the transition section includes a transition body integrally formed with the guide tube. The head side of the transition body is configured as a flexible frustum-shaped body that gradually and smoothly widens from the shape of the guide tube to the shape of the bronchoscope head opening. A support body adapted to the inner lumen of the bronchoscope is connected to the flexible frustum-shaped body towards the tail side of the guide tube. The flexible frustum-shaped body is adjacent to the bronchoscope head opening, and the support body is accommodated within the bronchoscope lumen.

[0011] An elastic diaphragm tube, with a wall thickness of less than 0.5 mm, is provided at the junction of the flexible truncated cone and the support. The elastic diaphragm tube expands elastically to wrap around the outer wall of the bronchoscope tip.

[0012] The elastic membrane tube is reversed and wrapped around the flexible frustum-like body. After being deformed by force, its shape is smaller than the inner lumen of the bronchoscope tube.

[0013] Furthermore, it also includes a ventilation operation valve adapted to the tail opening of the bronchoscope tube, wherein the ventilation operation valve is connected to a tube connection port that matches the tail opening of the bronchoscope tube, a breathing connection port that matches the patient end interface of the breathing circuit, and a bronchoscope insertion port that matches the outer diameter of the bronchoscope.

[0014] Alternatively, an instrument insertion port matching the outer diameter of the interventional device can be set on the same end face as the ventilation operation valve and the bronchoscope insertion port.

[0015] Furthermore, the bronchoscope insertion port has a flared opening with an inner diameter larger than the outer diameter of the bronchoscope on the outer wall side of the ventilation operation valve, and a sealing cone opening with an inner diameter smaller than the outer diameter of the bronchoscope extends from the inner wall side of the ventilation operation valve.

[0016] And / or, the instrument insertion inlet is provided with a flared opening on the outer wall side of the ventilation operation valve with an inner diameter larger than the outer diameter of the interventional device, and a sealing cone opening with an inner diameter smaller than the outer diameter of the interventional device is provided on the inner wall side of the ventilation operation valve.

[0017] Furthermore, the transition section includes a transition tube, which is movably disposed between the inner lumen of the bronchoscope tube and the outer wall of the guide tube. The inner lumen of the transition tube is adapted to the shape of the guide tube, and the outer shape of the transition tube is adapted to the inner lumen of the bronchoscope tube. The head end of the transition tube is located between the head end of the guide tube and the head end of the bronchoscope tube. The tail end of the transition tube is located between the tail end of the bronchoscope tube and the tail end of the guide tube.

[0018] The transition tube extends from the head section of the bronchoscope tube and is set as a flexible frustum-shaped tube that gradually thickens from the outer wall of the guide tube to the head opening of the bronchoscope tube. The flexible frustum-shaped tube (41) is adjacent to the head opening of the bronchoscope tube (1).

[0019] An elastic diaphragm tube with a wall thickness of less than 0.5 mm is annularly connected to the tail end of the flexible truncated cone tube. The elastic diaphragm tube expands elastically to wrap around the outer wall of the bronchoscope tip.

[0020] The elastic diaphragm tube is reversed and wrapped around the flexible frustum-shaped tube. After being deformed by force, its shape is smaller than the inner cavity of the bronchoscope tube.

[0021] Furthermore, the tail edge of the elastic film tube is configured with a slanted ring, and the distance between the slanted ring and the opening at the head of the bronchoscope is 5-30 mm.

[0022] Furthermore, the guide tube is a solid tube, and the head of the guide tube extending out of the bronchoscope tube is J-shaped.

[0023] Alternatively, the guide tube may be a hollow tube, with a shaped insertion guide core movably accommodated within its inner cavity.

[0024] Furthermore, the bronchoscope tube body is made of flame-retardant medical materials, including flame-retardant polyvinyl chloride, flame-retardant polyurethane, and flame-retardant silicone.

[0025] Furthermore, a video head is installed at the tip of the bronchoscope tube, and an electrical signal is connected to the video head at the tail of the bronchoscope tube where a display screen is installed.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0027] 1. A video laryngoscope can be used to directly perform bronchoscopic intubation, reducing the difficulty of intubation;

[0028] 2. After the thinner tip of the guide tube is inserted into the patient's trachea, the stiffer bronchoscope tube is guided into the airway through the flexible transition section. This reduces the requirements for intubation conditions and minimizes intubation trauma.

[0029] 3. After the tracheoscopic tube is inserted into the trachea, the guide tube and the transition section can be easily pulled out under the deformation of the flexible transition section. The tracheoscopic tube with a relatively hard lumen is more conducive to airway interventional operations, especially emergency suction and hemostasis treatment in case of bleeding.

[0030] 4. The flexible membrane tube design can prevent damage during bronchoscope tube insertion and ensure smooth removal of the flexible transition section;

[0031] 5. The bronchoscope tube is equipped with a sealing cuff to ensure airtight ventilation during interventional treatment. The high-risk high-frequency ventilation is abandoned in favor of a safer and more effective conventional mechanical ventilation strategy to ensure oxygen supply, avoid aspiration, and ensure safety and reliability.

[0032] 6. After the airway is sealed, inhalation anesthesia can be used, which is beneficial for the patient's rapid postoperative recovery;

[0033] 7. The end of the bronchoscope tube is equipped with a bronchoscope insertion port and an instrument insertion port, and a matching sealing cone is provided to increase ventilation tightness during interventional treatment. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the ventilation operation valve structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the integrated structure of the transition body and the guide tube of the present invention;

[0039] Figure 5 This is a schematic diagram of the transition tube structure of the present invention;

[0040] Figure 6 This is a schematic diagram of the process of removing the transition tube after the bronchoscope tube is inserted into the airway according to the present invention.

[0041] Figure 7 This is a schematic diagram of the ventilation operation valve and the bronchoscope tube of the present invention.

[0042] In the diagram: 1. Bronchoscope tube; 11. Sealing cuff; 12. Inflation port; 2. Guide tube; 3. Transition body; 31. Flexible frustum-shaped body; 32. Support body; 13. Ventilation valve; 13-1. Tube connection port; 13-2. Breathing connection port; 13-3. Bronchoscope insertion port; 13-4. Instrument insertion port; 13-5. Bronchoscope port occlusion block; 13-6. Instrument port occlusion block; 4. Transition tube; 41. Flexible frustum-shaped tube; 5. Elastic membrane tube;

[0043] in, Figure 5 In the figure, a represents the shortest length of the elastic diaphragm tube, and b represents the longest length of the elastic diaphragm tube. Detailed Implementation

[0044] 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.

[0045] like Figure 1 and Figure 2 As shown, the flexible bronchoscope tube of this invention includes a bronchoscope tube 1 for airway interventional procedures and a flexible guide tube 2 movably fitted within the lumen of the bronchoscope tube 1. The bronchoscope tube 1 is more rigid than the guide tube 2. Both the bronchoscope tube 1 and the guide tube 2 are preferably circular in shape to reduce airway damage during tube rotation during intubation. The bronchoscope tube 1 replaces the traditional rigid bronchoscope and serves as the passage for airway interventional surgery or examinations. Its rigidity and wider lumen ensure unobstructed access during respiratory interventional procedures. The outer diameter is typically 8-14 mm, and the inner diameter is 6-12 mm, allowing simultaneous insertion of a bronchoscope with an outer diameter of approximately 5 mm and at least one interventional surgical instrument, such as an airway support spring, a cord-like electrocoagulation device, or a cord-like electrocautery device. The wider lumen allows for rapid insertion of various surgical instruments in emergency situations during interventional surgery, facilitating emergency treatment; it also facilitates the fragmentation and removal of foreign objects. The outer diameter of the guide tube 2 is relatively small, and the material and hardness are comparable to those of a clinical endotracheal tube. Its outer diameter is preferably less than 7 mm, and the inner diameter of the hollow cavity is greater than 4 mm, which facilitates the insertion of the endotracheal core or other endotracheal tools, such as light rods, soft rod video endotracheal cores, etc., and is used to directly insert the head of the guide tube 2 into the patient's trachea through the glottis.

[0046] The guide tube 2 extends at its tail end beyond the tail opening of the bronchoscope tube 1, and at least 30 mm at its tip. To ensure the guiding effect of the guide tube 2 tip on the bronchoscope tube 1 during airway insertion, the optimal length of the guide tube 2 tip extending beyond the bronchoscope tube 1 is 30-100 mm. 30 mm ensures its minimum effective length; anything greater than 100 mm is ineffective and increases the complexity of the guidance procedure. After the bronchoscope tube 1 has entered the patient's airway to the appropriate depth, the portion of the guide tube 2 extending beyond the tail opening of the bronchoscope tube 1 acts as a handle. Holding the handle at the tail end of the guide tube 2 facilitates the removal of the guide tube 2 from the lumen of the bronchoscope tube 1.

[0047] The outer diameter of the guide tube 2 should be appropriate for the corresponding patient's airway lumen, and slightly smaller than the circular area that the patient's glottis can allow to pass through. This ensures that the tip of the guide tube 2 can be smoothly inserted into the patient's glottis without causing damage. A thinner guide tube 2 is not necessarily better. A thicker guide tube 2 can provide more effective support and guidance when inserting the bronchoscope tube 1 into the airway, reducing the difficulty of guiding the bronchoscope tube 1 into the airway due to severe bending or deformation of the guide tube 2.

[0048] For the thicker bronchoscope tube 1, the guide tube 2 can be slightly thicker, used for larger adults; for the thinner bronchoscope tube 1, the guide tube 2 can be slightly thinner, used for smaller adults or children. The cross-sectional area of ​​the tip of the guide tube 2 is 15-60 mm smaller than the cross-sectional area of ​​the cephalic opening of the bronchoscope tube 1. 2 Ideally, the difference can be larger in the thicker bronchoscope tube 1 and smaller in the thinner bronchoscope tube 1, which can meet the above usage requirements.

[0049] The glottis is the airway entrance and the narrowest part of the upper airway. The glottis itself is highly elastic and can expand and contract. When the glottis is relaxed, the bronchoscope tube 1 can be inserted smoothly. However, after general anesthesia, the glottis is naturally relaxed, and the cavity is much smaller than in its relaxed state. Insertion of the bronchoscope tube 1 can easily cause glottic damage, or even dislocation of the arytenoid cartilage. The bronchoscope tube 1 and the guide tube 2 have significantly different dimensions. To reduce glottic damage during airway insertion, a flexible transition section is provided on the outer wall of the guide tube 2 extending from the cephalic opening of the bronchoscope tube 1. This transition section deforms, passes through the lumen of the bronchoscope tube 1, and disengages from the caudal opening of the bronchoscope tube 1. In this way, under the support of the flexible transition section, the glottic cavity is gradually opened up, eventually reaching the size of the opening at the tip of the bronchoscope tube 1, but still smaller than the limit of glottic dilation. This allows the bronchoscope tube 1 to enter the glottis smoothly, while avoiding damage to the glottis when the opening at the tip of the bronchoscope tube 1 is forcibly inserted into the glottis by violently pressing against the outer wall of the glottis.

[0050] Furthermore, the bronchoscope tube 1 includes a flexible tube with a rigid support spring embedded in its inner wall and a rigid tube. Currently, clinical rigid bronchoscopes are made of metal, which is difficult to deform and can easily cause significant pressure on the lips, teeth, pharynx, and throat during insertion, resulting in damage. The flexible tube with a rigid support spring ensures that the inner lumen of the bronchoscope tube 1 will not collapse under the support of the rigid spring, while also allowing for a certain degree of bending deformation, reducing pressure damage to the lips, teeth, pharynx, glottis, and airway tissues. It should be noted that the rigid tube here refers to an elastic tube with high rigidity, which can deform to a certain extent under force but will not collapse or break, such as tubing made of materials like PE or PC.

[0051] Furthermore, such as Figure 1 , Figure 2 and Figure 7 As shown, a sealing airbag 11 is provided on the outer wall of the head section of the tracheoscope tube 1, and an inflation port 12 is provided at the tail section of the tracheoscope tube 1, which connects to the sealing airbag 11. When the head section of the tracheoscope tube 1 is inserted into the trachea and the sealing airbag 11 extends beyond the glottis, the sealing airbag 11 is inflated through the inflation port 12, which seals the gap between the outer wall of the tracheoscope tube 1 and the inner wall of the trachea, ensuring the airway is sealed during mechanical ventilation.

[0052] like Figure 1 and Figure 4 As shown, the transition section includes a transition body 3 integrally formed with the guide tube 2. The head side of the transition body 3 is configured as a flexible frustum-shaped body 31 that gradually and smoothly transitions from the shape of the guide tube 2 to the shape of the opening at the tip of the tracheoscope tube 1. A support body 32, adapted to the inner lumen of the tracheoscope tube 1, is connected to the tail side of the flexible frustum-shaped body 31. Before actual intubation, the thicker end face of the flexible frustum-shaped body 31 is close to the front of the opening at the tip of the tracheoscope tube 1, while the support body 32 is located inside the lumen at the tip of the tracheoscope tube 1.

[0053] The shape of the support 32 is adapted to the size of the inner cavity of the tracheoscope tube 1, and is slightly smaller than the inner cavity of the tracheoscope tube 1. After being inserted, it fixes the tracheoscope tube 1 in place, so that the mouth of the tracheoscope tube 1 corresponds to the rear end face of the flexible truncated cone 31. This avoids the head end of the tracheoscope tube 1 from being offset from the rear end face of the flexible truncated cone 31, which could cause damage to the glottis or the inner wall of the trachea due to the head end of the tracheoscope tube 1 pressing against it.

[0054] The flexible truncated cone 31, whose longitudinal section gradually thickens from the guide tube 2 to the opening at the tip of the bronchoscope tube 1, forms a trumpet-shaped shape. This allows the flexible truncated cone 31 to gradually expand under the support of the circumferential inclined surface of the flexible truncated cone 31 when it enters the glottis, eventually reaching the size of the opening at the tip of the bronchoscope tube 1. This guides the opening at the tip of the bronchoscope tube 1 smoothly into the glottis, reducing damage to the outer wall of the glottis.

[0055] An elastic film tube 5 is provided at the junction of the flexible truncated cone 31 and the support 32. The elastic film tube 5 expands elastically and wraps around the outer wall of the bronchoscope tube 1 tip. The elastic film tube 5 transitions the shape of the flexible truncated cone 31 to the shape of the bronchoscope tube 1 tip, and forms a protective wrap around the opening of the bronchoscope tube 1 tip, preventing damage to the outer wall of the glottis. The wall thickness of the elastic film tube 5 is less than 0.5 mm, the thinner the better, but it must be able to withstand the force during the advancement of the bronchoscope tube 1 without breaking. Medical materials with good toughness, such as PVC, silicone, and PE, with a wall thickness of 0.1-0.15 mm, can meet this requirement.

[0056] When the tip of the bronchoscope tube 1 is inserted to a suitable depth, and the guide tube 2 needs to be pulled out, the elastic film tube 5 reverses and wraps around the flexible truncated cone body 31. After the flexible truncated cone body 31 wrapping the elastic film tube 5 is deformed by force, its shape is smaller than the inner cavity of the bronchoscope tube 1, so that the guide tube 2 and the transition body 3 set at its head can be pulled out of the inner cavity of the bronchoscope tube 1 smoothly.

[0057] Furthermore, such as Figure 3 As shown, it also includes a ventilation operation valve 13 adapted to the tail opening of the bronchoscope tube 1. The ventilation operation valve 13 is connected to a tube connection port 13-1 matching the tail opening of the bronchoscope tube 1, a breathing connection port 13-2 matching the patient end interface of the breathing circuit, and a bronchoscope insertion port 13-3 matching the outer diameter of the bronchoscope. The inner diameter of the bronchoscope insertion port 13-3 is about 4-4.5 mm, which is a standard accessory for rigid bronchoscopes. It is used to connect the ventilator and the end of the rigid bronchoscope to provide respiratory support for the patient. The end face of the bronchoscope insertion port 13-3 is made of flexible material, allowing the bronchoscope to be inserted through the bronchoscope insertion port 13-3 during examination, reducing ventilation leakage.

[0058] Currently, when other instruments need to be inserted, they also need to be inserted through the bronchoscope inlet 13-3. However, with two instruments inserted into the bronchoscope inlet 13-3, the seal is extremely poor, resulting in very poor ventilation. Furthermore, an instrument inlet 13-4, matching the outer diameter of the interventional device, is provided on the same flexible end face as the ventilation valve 13 and the bronchoscope inlet 13-3. The inner diameter of the instrument inlet 13-4 is approximately 2-2.5 mm, which is compatible with the common 2.5 mm outer diameter of interventional devices. When other instruments need to be inserted, they can be inserted through the instrument inlet 13-4, thus avoiding the need for two instruments to be inserted through the same bronchoscope inlet 13-3, and preventing damage to the seal of the bronchoscope inlet 13-3.

[0059] Furthermore, the bronchoscope insertion port 13-3 has a flared opening on the outer wall side of the ventilation operating valve 13 with an inner diameter larger than the outer diameter of the bronchoscope, which facilitates bronchoscope insertion. A sealing conical opening with an inner diameter smaller than the outer diameter of the bronchoscope extends from the inner wall side of the ventilation operating valve 13, improving ventilation sealing after bronchoscope insertion. Similarly, the instrument insertion port 13-4 has a flared opening on the outer wall side of the ventilation operating valve 13 with an inner diameter larger than the outer diameter of the interventional device, and a sealing conical opening with an inner diameter smaller than the outer diameter of the interventional device extends from the inner wall side of the ventilation operating valve 13.

[0060] Furthermore, a suitable endoscope port blocking block 13-5 is provided corresponding to the bronchoscope inlet 13-3. When the bronchoscope inlet 13-3 is empty, the endoscope port blocking block 13-5 blocks or covers the bronchoscope inlet 13-3 to prevent air leakage during ventilation. Similarly, a suitable instrument port blocking block 13-6 is provided corresponding to the instrument inlet 13-4 to block the passage through the instrument inlet 13-4 when the instrument inlet 13-4 is empty, thus preventing air leakage during ventilation.

[0061] like Figure 7 The diagram shows the ventilation control valve 13 used in conjunction with the bronchoscope tube 1. After the bronchoscope tube 1 is intubated, all tubing within its cavity can be removed. The bronchoscope tube connection port 13-1 of the ventilation control valve 13 is matched and sealed with the tail interface of the bronchoscope tube 1. The bronchoscope insertion port 13-3 is blocked with the bronchoscope port blocking block 13-5, and the instrument insertion port 13-4 is blocked with the instrument port blocking block 13-6. The sealing cuff 11 at the head of the bronchoscope tube 1 is inflated through the inflation port 12. Finally, the breathing connection port 13-2 is matched and sealed with the breathing tubing of the anesthesia machine. This completes the sealing of the airway by the bronchoscope tube 1, and the patient can then be connected to the anesthesia machine for conventional mechanical ventilation.

[0062] When a flexible bronchoscope needs to be inserted, disengage the end-of-port block 13-5, insert the bronchoscope through the bronchoscope insertion port 13-3, and then guide it into the airway through the bronchoscope tube 1 for examination. When treatment is required, disengage the instrument insertion port block 13-6, insert the auxiliary instruments through the instrument insertion port 13-4, and then simultaneously insert the bronchoscope and auxiliary instruments for related procedures. This ensures a tight seal during operation, guaranteeing effective mechanical ventilation.

[0063] When it is necessary to place instruments with a large outer diameter, such as tracheal stents, temporarily detach the ventilation operation valve 13 from the tail end interface of the tracheoscope tube 1. This allows the tracheoscope and tracheal stent inserter to be simultaneously inserted into the airway for quick positioning and release of the tracheal stent. After the operation is completed, remove the tracheoscope and reconnect the endoscope tube connection 13-1 of the ventilation operation valve 13 to the tail end interface of the tracheoscope tube 1 for a sealed connection, restoring normal mechanical ventilation.

[0064] Furthermore, such as Figure 2 and Figure 5 As shown, the transition section includes a transition tube 4, which is movably accommodated between the inner lumen of the bronchoscope tube 1 and the outer wall of the guide tube 2; the inner lumen of the transition tube 4 is adapted to the shape of the guide tube 2, and the outer shape of the transition tube 4 is adapted to the inner lumen of the bronchoscope tube 1; the head end of the transition tube 4 is located between the head end of the guide tube 2 and the head end of the bronchoscope tube 1; the tail end of the transition tube 4 is located between the tail end of the bronchoscope tube 1 and the tail end of the guide tube 2.

[0065] The transition tube 4 extends from the head section of the bronchoscope tube 1 and is a flexible frustum-shaped tube 41 that gradually thickens from the outer wall of the guide tube 2 to the opening at the head end of the bronchoscope tube 1.

[0066] An elastic diaphragm tube 5 is annularly connected to the tail boundary of the flexible frustum-shaped tube 41. The wall thickness of the elastic diaphragm tube 5 is less than 0.5 mm. The elastic diaphragm tube 5 expands elastically and wraps around the outer wall of the bronchoscope tube head. The elastic diaphragm tube 5 is reversed and wrapped around the flexible frustum-shaped tube 41. After deformation under force, its shape is smaller than the inner cavity of the bronchoscope tube 1.

[0067] It should be noted that after the transition tube 4, guide tube 2, and bronchoscope tube 1 are temporarily fixed in place, the flexible frustum-shaped tube 41 is positioned directly adjacent to the head opening of the bronchoscope tube 1, forming a tapered support structure that gradually thickens from the outer wall of the guide tube 2 to the shape of the head opening of the bronchoscope tube 1. The side wall of the flexible frustum-shaped tube 41 is smooth and unobstructed. Figure 1 and Figure 4 In comparison, the transition body 3 and the guide tube 2 are essentially set up separately, and the flexible frustum-shaped tube 41 set on the transition tube 4 undertakes the function of the transition body 3.

[0068] Specifically, the flexible guide tube 2 is fitted inside the flexible transition tube 4, which in turn is fitted inside the rigid bronchoscope tube 1. The guide tube 2 is the thinnest and longest at both ends, with its tip extending beyond the cephalic opening of the transition tube 4. It serves to guide the bronchoscope tube 1 into the glottis and trachea without causing injury during intubation. The tail end of the guide tube 2 exposes the transition tube 4 and acts as a handle after the bronchoscope tube 1 has entered the trachea, used to remove the guide tube 2.

[0069] The flexible, frustum-shaped tube 41 at the tip of the transition tube 4 guides the rigid bronchoscope tube 1 during insertion into the glottis, gradually opening the glottis to accommodate the size of the bronchoscope tube 1, thus allowing it to be inserted into the patient's airway and minimizing injury. The tail end of the transition tube 4 protrudes from the bronchoscope tube 1, allowing for easy removal of the transition tube 4 from the bronchoscope tube 1. The elastic membrane tube 5 serves the same function as described above. Figure 1 and Figure 4 The structure is the same, so it will not be repeated here.

[0070] Furthermore, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the tail edge of the elastic film tube 5 is configured with a beveled ring, and the distance between the beveled ring and the opening at the tip of the bronchoscope tube 1 is 5-30 mm. Figure 5 As shown, 'a' represents the shortest length of the elastic membrane tube 5, and 'b' represents the longest length of the elastic membrane tube 5, forming a membrane sleeve with a slanted opening at the tail end. The shorter 'a' portion of the elastic membrane tube 5 facilitates its reversal under force, allowing it to wrap around the flexible frustum-shaped tube 41, thus guiding the deformation and reversal of the entire elastic membrane tube 5. This allows the flexible frustum-shaped tube 41 and the elastic membrane tube 5 to be smoothly pulled out of the lumen of the bronchoscope tube 1. The longer 'b' portion of the elastic membrane tube 5 strengthens its wrapping and fixing effect on the opening at the tip of the bronchoscope tube 1, enhancing the fixation of the bronchoscope tube 1 when the guide tube 2, transition tube 4, and bronchoscope tube 1 are simultaneously inserted into the patient's glottis and trachea, and improving the guiding insertion effect of the bronchoscope tube 1. The slanted opening between 'a' and 'b' facilitates the reversal of the elastic membrane tube 5 under force when the transition tube 4 is pulled out, reducing the force required for the elastic membrane tube 5 to reverse under force.

[0071] Furthermore, such as Figure 6 As shown, to... Figure 2 A schematic diagram of the process of removing the bronchoscope tube 1 from the transition tube 4 in the embodiment is shown below:

[0072] like Figure 6 As shown in Figure A, after the tracheoscope tube 1 is inserted, the guide tube 2 is pulled out of the transition tube 4, while the transition tube 4 remains in the tracheoscope tube 1.

[0073] like Figure 6 As shown in Figure B, the bronchoscope tube 1 is fixed, and the transition tube 4 is retracted. The shorter a-length part of the elastic film tube 5 is poorly fixed and falls off from the outer wall of the head end of the bronchoscope tube 1 first, reversing and elastically wrapping around the flexible frustum-shaped tube 41. This causes the longer b-length part to fall off and reversing, wrapping around the flexible frustum-shaped tube 41. The flexible frustum-shaped tube 41 wrapped with the elastic film tube 5 is still smaller than the inner cavity of the bronchoscope tube 1 and can smoothly enter the inner cavity of the bronchoscope tube 1.

[0074] like Figure 6 As shown in C, the bronchoscope tube 1 is fixed, and the transition tube 4 continues to retract. The shorter a-length part of the elastic film tube 5 is completely reversed and wrapped around the flexible frustum-shaped tube 41 and enters the inner cavity of the bronchoscope tube 1. At the same time, more of the longer b-length parts are also reversed and wrapped around the flexible frustum-shaped tube 41 and enter the inner cavity of the bronchoscope tube 1.

[0075] like Figure 6As shown in Figure D, fix the bronchoscope tube 1, continue to retract the transition tube 4, and the shorter a-length part and the longer b-length part of the elastic film tube 5 are completely reversed to the outside of the flexible frustum-shaped tube 41. After retraction, they all enter the inner cavity of the bronchoscope tube 1. Continue to retract the transition tube 4, and the transition tube 4 can be removed from the tail end interface of the bronchoscope tube 1.

[0076] After that, connect the ventilation operation valve 13 correctly, inflate the sealing airbag 11, and then proceed with the subsequent operations, such as the relevant examination or treatment.

[0077] Furthermore, the guide tube 2 is a solid tube, and the tip of the guide tube 2 extending out of the tracheoscope tube 1 is J-shaped. The I-shaped tip makes it easier to hold the tail of the guide tube 2 outside the oral cavity, and with the help of a video laryngoscope, the tip of the guide tube 2 can be smoothly inserted into the glottis, which conforms to the human oral cavity anatomy structure for tracheal intubation.

[0078] Alternatively, the guide tube 2 can be a hollow tube, with a shaped insertion guide core movable within its cavity. By shaping the insertion guide core, the tip of the guide tube 2 can be arbitrarily set at the required angle to meet the insertion needs of different patients. The outer diameter of the shaped insertion guide core is smaller than that of the guide tube 2, while its length is greater than that of the guide tube 2, facilitating insertion into the guide tube 2 and shaping its tip. During shaping, the tip of the insertion guide core must not expose the opening at the tip of the guide tube 2. The shaped insertion guide core includes a shaped metal rod, such as an aluminum rod with an outer diameter of approximately 2mm. During shaping, the J-shaped bend is more pronounced in patients with high glottis, while the bend is less pronounced in ordinary patients.

[0079] Furthermore, the bronchoscope tube 1 is made of flame-retardant medical materials, including flame-retardant polyvinyl chloride, flame-retardant polyurethane, and flame-retardant silicone. In airway interventional surgery, lasers, electrocautery, and electrocoagulation are commonly used, which can cause significant sparks. Flame-retardant materials can reduce the risk of combustion of the bronchoscope tube 1 caused by these procedures.

[0080] Furthermore, a video head is installed at the tip of the bronchoscope tube 1, and an electrical signal is connected to the video head, which is connected to a display screen at the tail of the bronchoscope tube 1. In practical use, in most cases, the bronchoscope is no longer needed; the image inside the airway can be directly observed on the display screen for examination or treatment. However, it should be noted that cleaning consumables for the video head, such as cotton balls with long handles, should be provided for cleaning the video head when it becomes contaminated. Of course, a better option is to make the video head with a structure that allows temporary adjustment of its relative position to the bronchoscope tube 1. This allows for adjustment of the video head's position at the tip of the bronchoscope tube 1, and it can extend out of the tip and be temporarily fixed. The circumferential position of the video head at the tip of the bronchoscope tube 1 can be adjusted at any time and temporarily locked for easy observation of the operating position during use. It can also be detached for cleaning under direct visual observation when necessary.

[0081] In summary, this invention, through the flexible transition section of the flexible guide tube 2, enables the smooth insertion of the bronchoscope tube 1 into the patient's glottis and airway, overcoming the difficulties and potential damage associated with traditional rigid bronchoscope intubation. The sealing cuff 11 at the tip of the bronchoscope tube 1, in conjunction with the ventilation operation valve 13, ensures a tight seal during ventilation, transforming the high-frequency jet ventilation of traditional rigid bronchoscope procedures into conventional mechanical ventilation. This avoids the risks of hypoxia and carbon dioxide accumulation, significantly reducing the risks of traditional rigid bronchoscope anesthesia and transforming it from a high-risk procedure into a routine one, thus lowering patient risk. The invention is simple in structure, low in cost, and has significant clinical application value. It should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0082] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flexible tracheoscopic tube, characterized by: It includes a bronchoscope tube (1) for endotracheal intervention and a flexible guide tube (2) that is movably fitted inside the lumen of the bronchoscope tube (1). The bronchoscope tube (1) is more rigid than the guide tube (2). The guide tube (2) extends from the tail end of the bronchoscope tube (1) through the tail end opening, and from the head end of the guide tube (2) at least 30 mm beyond the head end opening of the bronchoscope tube (1). The cross-sectional area of ​​the head end of the guide tube (2) is 15-60 mm smaller than the cross-sectional area of ​​the head end opening of the bronchoscope tube (1). 2 ; The outer wall of the guide tube (2) extending out of the head side opening of the tracheoscope tube (1) is provided with a flexible transition section that transitions from the outer wall of the guide tube (2) to the outer wall of the head side opening of the tracheoscope tube (1). After the transition section is deformed, it passes through the inner lumen of the tracheoscope tube (1) and exits the tail side opening of the tracheoscope tube (1).

2. The flexible tracheoscope tube according to claim 1, characterized in that: The bronchoscope tube (1) includes a flexible tube and a rigid tube with a rigid support spring embedded in the inner wall.

3. The flexible tracheoscope tube according to claim 1, characterized in that: A sealing airbag (11) is provided on the outer wall of the head section of the bronchoscope tube (1), and an inflation port (12) is provided at the tail of the bronchoscope tube (1) through which the sealing airbag (11) is connected.

4. The flexible tracheoscope tube according to claim 1, characterized in that: The transition section includes a transition body (3) integrally formed with the guide tube (2). The head side of the transition body (3) is configured as a flexible frustum-shaped body (31) that gradually and smoothly thickens from the shape of the guide tube (2) to the shape of the opening at the head end of the bronchoscope tube (1). A support body (32) adapted to the inner cavity of the bronchoscope tube (1) is connected to the tail side of the flexible frustum-shaped body (31). The flexible frustum-shaped body (31) is adjacent to the opening at the head end of the bronchoscope tube (1), and the support body (32) is accommodated in the cavity of the bronchoscope tube (1). An elastic film tube (5) is provided at the junction of the flexible truncated cone (31) and the support (32), and the wall thickness of the elastic film tube (5) is less than 0.5 mm; the elastic film tube (5) expands elastically and wraps around the outer wall of the head end of the bronchoscope tube (1); The elastic film tube (5) is reversed and wrapped around the flexible truncated cone (31). After being deformed by force, its shape is smaller than the inner cavity of the bronchoscope tube (1).

5. The flexible tracheoscope tube according to claim 1, characterized in that: It also includes a ventilation operation valve (13) adapted to the tail opening of the bronchoscope tube (1), the ventilation operation valve (13) being connected to a tube connection port (13-1) matching the tail opening of the bronchoscope tube (1), a breathing connection port (13-2) matching the patient end interface of the breathing circuit, and a bronchoscope insertion port (13-3) matching the outer diameter of the bronchoscope. Alternatively, an instrument insertion port (13-4) matching the outer diameter of the interventional device may be provided on the same end face of the ventilation operation valve (13) and the bronchoscope insertion port (13-3).

6. The flexible tracheoscope tube according to claim 5, characterized in that: The bronchoscope insertion inlet (13-3) has a flared mouth with an inner diameter larger than the outer diameter of the bronchoscope on the outer wall side of the ventilation operation valve (13), and a sealing cone mouth with an inner diameter smaller than the outer diameter of the bronchoscope is extended on the inner wall side of the ventilation operation valve (13). And / or, the instrument insertion port (13-4) is provided with a flared mouth with an inner diameter larger than the outer diameter of the interventional device on the outer wall side of the ventilation operation valve (13), and a sealing cone mouth with an inner diameter smaller than the outer diameter of the interventional device is provided on the inner wall side of the ventilation operation valve (13).

7. The flexible tracheoscope tube according to claim 1, characterized in that: The transition section includes a transition tube (4), which is movably accommodated between the inner lumen of the bronchoscope tube (1) and the outer wall of the guide tube (2); the inner lumen of the transition tube (4) is adapted to the shape of the guide tube (2), and the shape of the transition tube (4) is adapted to the inner lumen of the bronchoscope tube (1); the head end of the transition tube (4) is located between the head end of the guide tube (2) and the head end of the bronchoscope tube (1); the tail end of the transition tube (4) is located between the tail end of the bronchoscope tube (1) and the tail end of the guide tube (2). The transition tube (4) extends out of the head section of the bronchoscope tube (1) and is set as a flexible frustum-shaped tube (41) that gradually thickens from the outer wall of the guide tube (2) to the shape of the head opening of the bronchoscope tube (1); the flexible frustum-shaped tube (41) is adjacent to the head opening of the bronchoscope tube (1). An elastic film tube (5) is provided at the end of the flexible truncated cone tube (41) with a ring-shaped connection. The wall thickness of the elastic film tube (5) is less than 0.5 mm. The elastic film tube (5) expands elastically and wraps around the outer wall of the head end of the bronchoscope tube (1). The elastic film tube (5) is reversed and wrapped around the flexible truncated cone tube (41). After being deformed by force, its shape is smaller than the inner cavity of the bronchoscope tube (1).

8. The flexible tracheoscope tube according to any one of claims 4 or 7, characterized in that: The tail edge of the elastic film tube (5) is set with a slanted ring, and the distance between the slanted ring and the opening at the head end of the bronchoscope tube (1) is 5-30mm.

9. The flexible tracheoscope tube according to claim 1, characterized in that: The guide tube (2) is a solid tube, and the head of the guide tube (2) extending out of the bronchoscope tube (1) is J-shaped; Alternatively, the guide tube (2) is a hollow tube, and a shaped insertion guide core is movably accommodated in the inner cavity of the guide tube (2).

10. The flexible tracheoscope tube according to claim 1, characterized in that: A video head is provided at the head end of the bronchoscope tube (1), and an electrical signal is connected to the video head. A display screen is provided at the tail end of the bronchoscope tube (1).

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