Hard bronchoscope with sealing bag

Abstract

The utility model provides a hard bronchoscope with a sealing bag, which belongs to the field of medical instruments and comprises a hard plastic tube, the sealing bag is arranged at the head end of the hard plastic tube, and an inflation valve port is communicated with the sealing bag. The tail end of the hard plastic pipe is provided with at least one sealing valve operation port, and the side of the rear section of the hard plastic pipe is provided with a breathing connector connected with the main cavity; the hard plastic pipe is arranged in the airway, the sealing air bag seals the airway, the breathing connecting port is connected with breathing equipment, an airway surgical instrument and a bronchofiberscope are arranged through the sealing valve operation port, a hard bronchoscope is replaced, complex interventional surgery in the airway is completed in a ventilation state, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model mainly relates to the medical field, in particular to a rigid bronchoscope with a sealing capsule. Background Art

[0002] The indications for rigid bronchoscopy surgery mainly include:

[0003] 1. Removal of airway foreign bodies: especially large or peculiarly shaped foreign bodies.

[0004] 2. Removal of neoplasms in the airway: such as benign or malignant tumors.

[0005] 3. Dilation of severe airway stenosis: to improve ventilation function.

[0006] 4. Management of massive airway bleeding: through endoscopic hemostasis.

[0007] 5. Occlusion of tracheobronchial fistula, etc.

[0008] Traditional rigid bronchoscopes are all made of metal and are round straight tubes. During surgery, they are inserted into the trachea through the oral cavity and glottis, facilitating the insertion of long rod-shaped surgical instruments for surgery. During surgery, traditional rigid bronchoscopes cannot seal the airway, resulting in the following during surgery:

[0009] 1. If local anesthesia is used for surgery, the patient suffers extremely, and the patient often struggles during the operation. This leads to various complications: such as bleeding: airway mucosa may be damaged during the surgical operation, resulting in bleeding. Hypoxemia: may be caused by airway obstruction, etc. Arrhythmia: the operation stimulation may trigger arrhythmia. Pneumothorax: airway rupture may lead to pneumothorax. Airway injury: such as tracheal perforation, etc. Laryngospasm, tracheoesophageal fistula, etc.

[0010] 2. If general anesthesia is selected and muscle relaxants, sedatives and analgesics are used, the patient is in an anesthetic state and is relatively comfortable. However, since it is difficult for a rigid bronchoscope to seal the respiratory tract, mechanical ventilation leakage is serious, and it is difficult for the breathing equipment to maintain effective oxygenation of the patient. This results in: severe carbon dioxide accumulation or hypoxemia often occurs during the operation, and even the operation must be interrupted to improve ventilation; at the same time, airway irritation causes a large amount of saliva and sputum in the patient's mouth, and aspiration is very likely to occur, leading to serious complications. In response to this situation, there is currently no good treatment method, and the palliative coping strategy is: connecting a rigid bronchoscope to a jet ventilator to jet breathe for the patient or connecting a rigid bronchoscope to an anesthesia machine for mechanical ventilation; filling gauze around the rigid bronchoscope in the oral cavity to try to seal the respiratory tract as much as possible, and at the same time using a surgical film to seal the mouth and nose on the face to try to form a seal, but the effect is extremely limited.

[0011] For the above reasons, during rigid bronchoscopy surgery, not only do patients face greater risks, but both surgeons and anesthesiologists also face significant pressure. Many physicians even have a strong sense of fear and are reluctant to perform such surgeries in primary hospitals. Even in top - tier or leading hospitals, low - ranked physicians feel nervous when performing such surgeries on patients. Less than a hundred hospitals across the country can carry out such surgeries, which brings great inconvenience to patients seeking medical treatment.

[0012] Clinically, there is an urgent need for a bronchoscope operating channel that can effectively seal the airway to meet the requirements of rigid bronchoscopy surgery, ensure patient safety, and relieve the treatment pressure on surgeons and anesthesiologists. Utility Model Content

[0013] In view of the above - mentioned defects of the prior art, the present utility model provides a rigid tracheoscope with a sealing balloon, which includes a rigid operating tube, which is an extruded tube made of hard plastic with strong toughness, having a hardness greater than 80 HRB and a wall thickness not greater than 1 mm.

[0014] The main lumen inside the rigid operating tube is used for ventilation and is a ventilation cavity; the ventilation cavity opens at the head end of the rigid operating tube to form a main ventilation port; a respiratory connection port is provided on the side of the rear section of the rigid operating tube and communicates with the ventilation cavity.

[0015] A sealing balloon is arranged around the outer wall of the rigid operating tube 4 - 6 cm behind the main ventilation port, and an inflation tube is connected to the sealing balloon; the front section of the inflation tube is buried in the side wall of the rigid operating tube or is attached to the inner wall of the rigid operating tube; in the rear section of the rigid operating tube, after the inflation tube exits the side wall of the rigid operating tube, an inflation valve port is connected.

[0016] The sealing balloon is an elastic membrane sac. After deflation and full exhaust, it closely adheres to the outer wall of the rigid operating tube without wrinkles.

[0017] At least two side ventilation ports are stagger - arranged by penetrating one side wall of the rigid operating tube between the main ventilation port and the sealing balloon.

[0018] A sealing operation cover is connected to the open end at the tail of the rigid operating tube. The sealing operation cover includes a cover ring that is hermetically connected to the outer wall of the rigid operating tube 1 and a cover top that seals the open end at the tail of the rigid operating tube. At least one flexible sealing hole is provided through the cover top.

[0019] Furthermore, it also includes a guiding inner core that matches the inner cavity length and outer shape of the rigid operating tube. The head end of the guiding inner core is blunt, and the tail end extends out of the rigid operating tube to form an operating handle; the operating handle is provided with a connecting structure for temporary fixation with the rigid operating tube.

[0020] Even further, a video cable embedding cavity is provided through the long axis of the guiding inner core and the operating handle; or, a transparent shell is provided at the head end of the video cable embedding cavity.

[0021] Furthermore, the rigid operating tube is a straight or curved circular tube, and the outer diameters include 6mm, 8mm, 10mm, 12mm, and 14mm.

[0022] Furthermore, the flexible sealing holes include at least one circular sealing hole with a tight fit diameter of 4.5mm and several circular sealing holes with a tight fit diameter of 2.5mm.

[0023] Furthermore, a corrugated tube is provided at the connection part between the rigid operating tube and the breathing connection port;

[0024] An end-tidal carbon dioxide monitoring interface is provided at the breathing connection port or between the rigid operating tube and the connected ventilation cavity;

[0025] The above are implemented individually or in parallel.

[0026] Furthermore, a ventilation filter membrane is provided between the rigid operating tube and the corrugated tube, or between the corrugated tube and the breathing connection port.

[0027] Furthermore, the rigid operating tube is arranged as a multi-cavity pipeline, and the multi-cavity pipeline further includes a video cable cavity

[0028] Furthermore, the rigid operating tube is arranged as a multi-cavity pipeline, and the multi-cavity pipeline includes a ventilation cavity and several instrument insertion cavities;

[0029] A flexible sealing hole is respectively provided on the through cover top corresponding to each cavity; the flexible sealing hole corresponding to the ventilation cavity is a circular sealing hole with a tight fit diameter of 4.5mm, and the flexible sealing hole corresponding to the instrument insertion cavity is a circular sealing hole with a tight fit diameter of 2.5mm

[0030] Furthermore, the side ventilation ports are three long holes with the long axes parallel to the rigid operating tube, evenly distributed on the cross-section of the rigid operating tube, and the area of each side ventilation port is greater than 12mm 2 .

[0031] Advantages of the utility model:

[0032] 1. After the sealing airbag is inflated, it can form a seal for the rigid bronchoscope with a sealing capsule, avoiding air leakage during mechanical ventilation, and the patient can safely receive general anesthesia;

[0033] 2. The airway operation instrument is inserted through the sealing operation port provided at the tail, while avoiding ventilation leakage;

[0034] 3. The breathing circuit can be conveniently connected through the breathing connection port, freeing up the operation space for the surgeon;

[0035] 4. The side ventilation ports are provided so that when the head end is inserted into one bronchus, the other bronchus will not be blocked, and both lungs can supply oxygen simultaneously;

[0036] 5. The guiding inner core with a blunt head can reduce the damage to the glottis and airway when inserting a rigid bronchoscope with a sealed balloon;

[0037] 6. The multi-channel setting can facilitate the insertion of operating instruments, reduce the damage to the expensive bronchoscope caused by inserting instruments through the operation port of the surgical bronchoscope, and make the operation more convenient; at the same time, a bronchoscope with a thinner outer diameter and no operation hole can be used to avoid the ventilation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is the first embodiment of the present utility model;

[0039] Figure 2 This is a schematic diagram of the guiding core of the present utility model;

[0040] Figure 3 This is a schematic diagram of the porous sealed operation port of the present utility model;

[0041] Figure 4 This is a schematic diagram of the present utility model with a corrugated pipe, a ventilation filter membrane and a carbon dioxide monitoring port arranged at the breathing connection port;

[0042] Figure 5 This is a longitudinal section, a cross section, a longitudinal section of the corresponding sealed operation port and a matching schematic diagram of the first embodiment of the multi-channel tubular structure of the present utility model;

[0043] Figure 6 This is a longitudinal section and a cross section schematic diagram of the second embodiment of the multi-channel tubular structure of the present utility model;

[0044] Figure 7 This is a structural diagram of another embodiment of the side ventilation port of the present utility model;

[0045] Figure 8 This is a position diagram during the specific implementation of the present utility model;

[0046] In the figure, the serial numbers and names are as follows:

[0047] 1. Rigid operation tube; 11. Ventilation cavity; 12. Main ventilation port; 13. Side ventilation port; 14. Instrument insertion; 15. Video cable cavity;

[0048] 2. Breathing connection port; 21. Corrugated pipe; 22. Filter membrane; 23. End-tidal carbon dioxide monitoring interface;

[0049] 3. Sealing balloon; 31. Inflation tube; 32. Inflation valve port;

[0050] 4. Sealed operation cover; 41. Cover ring; 42. Cover top; 43. Flexible sealing hole;

[0051] 5. Guiding inner core; 51. Operation handle; 52. Video cable embedding cavity; 53. Transparent shell. Detailed implementation manners

[0052] In order to enable those skilled in the art of this technology to better understand the technical solution of the present utility model and make the above-mentioned features, objectives, and advantages of the present utility model clearer and easier to understand, the present utility model will be further described below in conjunction with embodiments.

[0053] As Figure 1 shown, the rigid bronchoscope with a sealing bladder includes a rigid operation tube 1, which is an extruded tube of hard plastic with relatively strong toughness, having a hardness greater than 80 HRB and a wall thickness not greater than 1 mm. When the rigid operation tube 1 is inserted into the airway through the mouth, it bears a relatively large pressure at the tooth and mouth parts to avoid deformation and rupture after being stressed. The preferred hard plastic is convenient for heat-sealing and bonding fixation with the sealing airbag, and preferably has a straight tubular structure, or can also be a slightly curved arc shape. During use, it is directly visualized, or inserted into the patient's trachea through the oral cavity and glottis under the visual guidance of the flexible endoscope of the bronchoscope, and slowly advanced until it is close to the vicinity of the surgical site, thereby forming an operation path for the slender rod-shaped airway surgical tool of the surgical instrument.

[0054] The main lumen inside the rigid operation tube 1 is used for ventilation, which is the ventilation cavity 11; the ventilation cavity 11 opens at the head end of the rigid operation tube 1 to form the main ventilation port 12; a respiratory connection port 2 is connected to the ventilation cavity 11 on the side of the rear section of the rigid operation tube 1; the head end opening of the lumen of the rigid operation tube 1 forms the main ventilation port 12, which is also the outlet of the surgical instrument. The surgical instrument reaches the surgical site immediately after exiting the rigid operation tube 1, facilitating the treatment of the surgical target. The main ventilation port 12 can be a round hole opening, and is more preferably an elliptical oblique opening formed by obliquely cutting the rigid operation tube 1, which is convenient for inserting into the glottis and reduces the difficulty of entering the glottis.

[0055] In order to seal the patient's airway with the rigid operation tube 1 during the operation, a sealing bladder 3 is provided around the outer wall of the rigid operation tube 1 at a position 4 - 6 cm behind the main ventilation port 12, and an inflation tube 31 is connected to the sealing bladder 3; the front section of the inflation tube 31 is buried in the side wall of the rigid operation tube 1, or is attached to the inner wall of the rigid operation tube 1; in the rear section of the rigid operation tube 1, the inflation tube 31 exits the side wall of the rigid operation tube 1 and is connected to an inflation valve port 32;

[0056] The sealed airbag 3 is an elastic membrane sac. After being deflated and fully exhausted, it closely adheres to the outer wall of the rigid operating tube 1 without wrinkles, so as to reduce the difficulty during insertion and the possibility of causing damage. Before the rigid operating tube 1 reaches the surgical site, the sealed airbag 3 is exhausted of gas and in a completely deflated state, and its wall closely adheres to the outer wall of the rigid operating tube 1, avoiding frictional damage to the mucosa of the airway inner wall caused by the relatively large volume of the sealed airbag 3. The inflation and deflation operations of the sealed airbag 3 are carried out through the inflation tube 31 and the inflation valve port 32 that are hermetically connected to the sealed airbag 3. When the main ventilation port 12 at the head end of the rigid operating tube 1 approaches the surgical site, the position of the rigid operating tube 1 is fixed, and an appropriate amount of gas is injected into the sealed airbag 3 through the inflation valve port 32 and the inflation tube 31, so that the outer wall of the sealed airbag 3 fully seals the inner wall of the patient's airway, thereby forming a seal between the outer wall of the rigid operating tube 1 and the patient's airway. Then, through the breathing connection port 2 provided in the rear section main cavity of the rigid operating tube 1, it is connected to the anesthesia machine through the breathing circuit, thereby establishing mechanical ventilation. At this time, the breathing path is: anesthesia machine - breathing circuit - breathing connection port 2 - ventilation cavity 11 - patient's airway and lungs.

[0057] As a supplement to the above breathing path, at least two side ventilation ports 13 are staggeredly arranged on one side wall of the rigid operating tube 1 penetrating between the main ventilation port 12 and the sealed airbag 3. In unilateral bronchial surgery, since the diameter of the bronchus itself is very thick, it will cause the inner wall of the bronchus on the surgical side to closely adhere to the outside of the rigid operating tube 1 to form a seal, resulting in the inability to ventilate the lung on the other side. Therefore, the side ventilation ports 13 are needed to assist ventilation.

[0058] Furthermore, as Figure 1 and 8 shown, the side ventilation ports 13 are three long holes with the long axis parallel to the rigid operating tube 1, and are evenly distributed on the cross-section of the rigid operating tube 1. The area of each side ventilation port 13 is greater than 12 mm². The outer diameter of the rigid operating tube 1 is relatively thick, and when the main ventilation port 12 is located in the trachea, ventilation is not a problem; however, in some cases, the surgical site is deeper, located in the left or right bronchus. At this time, the rigid operating tube 1 is pushed deeper into the bronchus, and at this time, the rigid operating tube 1 will block the bronchial lumen on that side, resulting in the inability to effectively ventilate the non-surgical lung on the other side, or even the inability to ventilate. Through the setting of the side ventilation ports 13, it is ensured that the non-surgical side can ventilate normally. Specifically, the total ventilation area of the side ventilation ports 13 is greater than 12 mm², which can ensure unobstructed ventilation on the non-surgical side.

[0059] As Figure 7 shown, in order to better ensure the hardness of the rigid operating tube 1 itself, that is, to maintain its own shape and not be easily deformed, the side ventilation ports 13 can be composed of several small holes, so that effective ventilation can be achieved while ensuring the hardness of the rigid operating tube 1 itself.

[0060] During the operation, various airway operation instruments are inserted into the airway through the tail opening of the rigid operation tube 1. To avoid or reduce mechanical ventilation air leakage caused by the insertion of airway operation instruments, a sealed operation cover 4 is connected to the tail opening of the rigid operation tube 1. The sealed operation cover 4 includes a cover ring 41 that is hermetically connected to the outer wall of the rigid operation tube 1 and a cover top 42 that seals the tail opening of the rigid operation tube 1. At least one flexible sealing hole 43 is provided through the cover top 42, and the aperture is slightly smaller than the airway operation instrument. After expansion and deformation, it can allow the airway operation instrument to tightly fit and enter and move, and at the same time can tightly contact the outer wall of the airway operation instrument to avoid air leakage. It should be noted here that a plugging body can be provided on the flexible sealing hole 43. When the airway operation instrument is withdrawn, it can plug the operation hole sealed by the flexible sealing hole 43 to avoid air leakage.

[0061] It should be noted that: as Figure 3 shown, the sealed operation cover 4 includes at least one circular sealing hole with a tight fit diameter of 4.5 mm, that is, the endoscope sealing port 31, for the soft bronchoscope to pass through hermetically. The outer diameter of the soft bronchoscope is mostly 4.5 mm, which matches the circular sealing hole with a tight fit diameter of 4.5 mm. The soft bronchoscope has its own operation passage. During the operation, other airway operation instruments such as cutting, cauterizing, dilating, and electrocoagulating all pass through the operation passage of the soft bronchoscope.

[0062] Outside the soft bronchoscope, the outer diameters of other airway operation instruments such as cutting, cauterizing, dilating, and electrocoagulating are mostly 2.5 mm. Therefore, the sealed operation cover 4 can also be provided with several circular sealing holes with a tight fit diameter of 2.5 mm, that is, the instrument sealing port 32, to facilitate the direct insertion of other surgical instruments. The advantage is that the soft bronchoscope is expensive, and the repeated entry and exit of surgical instruments through its own operation passage will cause damage to the soft bronchoscope. When several circular sealing holes with a tight fit diameter of 2.5 mm are provided, a fiberoptic bronchoscope with a thinner outer diameter can be selected during the operation to obtain the surgical video, leaving more internal cavity space of the rigid operation tube 1, and even inserting two surgical instruments to cooperate with the operation, reducing the frequency of replacing surgical instruments and greatly improving the surgical efficiency. Further, sealing bodies are respectively provided for the holes of each sealed operation cover 4 to plug the holes of each sealed operation cover 4 when not in use to avoid air leakage.

[0063] As Figure 2As shown in the figure, it further includes a guiding inner core 5 that matches the inner cavity length and outer shape of the rigid operating tube 1. The head end of the guiding inner core 5 is blunt, and an operating handle 51 is provided at the tail end outside the rigid operating tube 1. The operating handle 51 is provided with a connecting structure for temporarily fixing it to the rigid operating tube 1. The guiding inner core 5 is slightly longer than the rigid operating tube 1. After the guiding inner core 5 is properly configured and inserted into the inner cavity of the rigid operating tube 1, the blunt head end just exposes outside the mouth of the rigid operating tube 1 and is temporarily fixed to the rigid operating tube 1 through the connecting structure. In this way, when the rigid operating tube 1 is inserted into the glottis, the operating handle 51 can provide an operating handle, and the blunt head end of the guiding inner core 5 located outside the mouth of the rigid operating tube 1 can minimize the frictional damage during the insertion into the glottis and trachea.

[0064] Furthermore, a video cable embedding cavity 52 is provided through the long axis of the guiding inner core 5 and the operating handle 51; a flexible bronchoscope can be inserted and fixed in the video cable embedding cavity 52, and the operation can be carried out under visual conditions to insert the rigid operating tube 1 into the glottis and trachea. Or, a transparent shell 53 is provided at the head end of the video cable embedding cavity 52, so that the camera of the flexible bronchoscope abuts against the transparent shell 53 and is inserted under visual through the transparent shell 53.

[0065] The rigid operating tube 1 is a straight or curved circular tube, and the outer diameters include 6mm, 8mm, 10mm, 12mm, and 14mm. The thinner outer diameter is suitable for patients with thinner airways such as children, and the thicker outer diameter is suitable for adults. The thickness of the trachea is determined according to the preoperative examination of the patient, and a rigid operating tube 1 with a suitable outer diameter is selected.

[0066] Further, as Figure 4 shown;

[0067] a. A corrugated pipe 21 is provided at the connection part between the rigid operating tube 1 and the respiratory connection port 2;

[0068] b. An end-tidal carbon dioxide monitoring interface 23 is provided at the respiratory connection port 2 or between the rigid operating tube 1 and the connected ventilation cavity;

[0069] The above a and b are implemented separately or in parallel.

[0070] Furthermore, a ventilation filter membrane 22 is provided between the rigid operating tube 1 and the corrugated pipe 21, or between the corrugated pipe 21 and the respiratory connection port 2.

[0071] A corrugated pipe 21 is provided at the connection part between the rigid operating tube 1 and the respiratory connection port 2; the corrugated pipe 21 is a flexible pipe with a corrugated wall, which is easy to bend. When bending, it can ensure the smoothness of the inner cavity and will not collapse, which is convenient for the connection between the respiratory connection port 2 and the respiratory circuit and avoids interference with surgical instruments.

[0072] Furthermore, a ventilation filter membrane 22 is provided between the rigid operating tube 1 and the bellows 21, or between the bellows 21 and the respiratory connection port 2; patients undergoing rigid bronchoscopic surgery are all critically ill patients, and are often accompanied by respiratory tract infections; surgical wounds will be formed in the patient's airway during surgery; anesthesia machines are expensive and have been in use for a long time, making them difficult to disinfect effectively. Mechanical ventilation is positive pressure ventilation, and cross infection between the anesthesia machine and the patient is very likely to occur, which is not conducive to the patients undergoing surgery, nor to the reuse of the anesthesia machine. The ventilation filter membrane 22 is more common in clinical practice, and its filter pores are tiny, allowing gas to pass through, but not allowing viruses and bacteria to pass through. The ventilation filter membrane 22 can be provided to block the exchange of pathogenic bacteria on both sides during ventilation, thereby preventing cross infection. This will not be elaborated here.

[0073] Furthermore, Figure 6 As shown, the hard operation tube 1 is configured as a multi-lumen pipeline, and the multi-lumen pipeline also includes a video cable cavity 15; the opening at the head end of the ventilation cavity forms a main ventilation port 12, which is connected to the rear ventilation cavity to set a breathing connection port 2; the tail opening of the video cable cavity 15 is connected to a sealed operation cover 4. Similarly, the video cable cavity 15 can be conveniently inserted into the video cable, and with the support of the instrument insertion cavity 14, the inner diameter of the video cable cavity 15 can be selected to have a finer aperture, which can be adapted to the insertion of a thinner video cable, and can be selected to have an inner diameter of 3.5 mm. Similarly, the side wall of the video cable cavity 15 inside the hard operation tube 1 is preferably hollowed out to fully increase the ventilation space and reduce ventilation resistance.

[0074] Further, such as Figure 5 As shown, the hard operation tube 1 is configured as a multi-lumen pipeline, which includes a ventilation cavity 11 and a plurality of instrument insertion cavities 14; the ventilation cavity head end opening forms a main ventilation port 12, which is connected to the rear ventilation cavity to set a breathing connection port 2, and the ventilation cavity tail opening is connected to set a sealing operation cover 4; each instrument insertion cavity 14 tail opening is connected to set a sealing operation cover 4. The hard operation tube 1 is still a circular tube in shape, and its instrument insertion cavity 14 is slightly larger than 2.5mm, which can allow 2.5mm surgical instruments to enter and exit smoothly; its ventilation cavity 11 is the remaining cavity of the hard operation tube 1 minus the instrument insertion cavity 14, which not only serves as a breathing ventilation cavity, but also needs to insert a soft bronchoscope through the ventilation cavity 11. In order to reduce space waste, the instrument insertion cavity 14 should be set close to the side wall of the hard operation tube 1, and the wall of the instrument insertion cavity 14 should be as thin as possible to reduce space waste.

[0075] In order to facilitate the entry and exit of the instrument, a flexible sealing hole 43 is set through the cover top 42 corresponding to each cavity; the flexible sealing hole 43 corresponding to the ventilation cavity 11 is a circular sealing hole with a diameter of 4.5 mm, and the flexible sealing hole 43 corresponding to the instrument insertion cavity 14 is a circular sealing hole with a diameter of 2.5 mm.

[0076] This design can be safely used for patients under general anesthesia. Surgery can be carried out under sufficient muscle relaxation, analgesia, and sedation. The patient has no body movement under anesthesia, reducing the difficulty of operation for surgeons. It can provide a safe and reliable respiratory support channel for patients undergoing rigid bronchoscope surgery, being safe and reliable. After the surgery, the rigid operating tube 1 should be promptly removed and replaced with an endotracheal tube. When the patient wakes up and has body movement again, the flexible endotracheal tube will not cause damage to the airway; it is basically the same as the treatment plan at the end of traditional rigid bronchoscope general anesthesia surgery.

[0077] The above embodiments are only illustrative of the principles and effects of this patent application and are not intended to limit this patent application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of this patent application. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in this patent application should still be covered by the claims of this patent application.

Claims

1. A rigid bronchoscope with a sealing bag, characterized in that: It comprises a hard operating tube (1), which is a hard plastic extrusion tube with strong toughness, with a hardness greater than 80HRB and a wall thickness not greater than 1mm; The main cavity in the hard operating tube (1) is used for ventilation and is a ventilation cavity (11); the ventilation cavity (11) is located at the head end of the hard operating tube (1) to form a main ventilation port (12); a breathing connection port (2) is provided at the side of the rear section of the hard operating tube (1) to communicate with the ventilation cavity (11); A sealing air bag (3) is arranged around the outer wall of the hard operating tube (1) 4-6 cm behind the main vent (12), and an inflation tube (31) is arranged in communication with the sealing air bag (3); the front section of the inflation tube (31) is buried in the side wall of the hard operating tube (1), or is arranged in close contact with the inner wall of the hard operating tube (1); the inflation tube (31) is connected to an inflation valve port (32) at the rear section of the hard operating tube (1) after exiting the side wall of the hard operating tube (1); The sealing airbag (3) is an elastic membrane bag, which fits tightly to the outer wall of the hard operating tube (1) without wrinkles after it is not inflated and fully deflated; At least two side vents (13) are staggeredly arranged on a side wall of the hard operating tube (1) between the main vent (12) and the sealing airbag (3); The rear end opening of the hard operating tube (1) is connected to a sealed operating cover (4), the sealed operating cover (4) comprising a cover ring (41) sealedly connected to the outer wall of the hard operating tube (1) and a cover top (42) covering the rear end opening of the hard operating tube (1), and at least one flexible sealing hole (43) is arranged through the cover top (42).

2. The rigid bronchoscope with a sealing bag according to claim 1, characterized in that: It also comprises a guide inner core (5) whose length and shape match the inner cavity of the hard operating tube (1); the guide inner core (5) has a blunt head end and an operating handle (51) is arranged at the tail end protruding from the hard operating tube (1); the operating handle (51) is provided with a connection structure for temporarily fixing with the hard operating tube (1).

3. The rigid bronchoscope with a sealing bag according to claim 2, characterized in that: A video cable embedding cavity (52) is arranged through the long axis of the guiding inner core (5) and the operating handle (51); or a transparent shell (53) is arranged at the head end of the video cable embedding cavity (52).

4. The rigid bronchoscope with a sealing bag according to claim 1, characterized in that: The hard operating tube (1) is a straight or arc-shaped circular tube, and the outer diameter includes 6mm, 8mm, 10mm, 12mm, and 14mm.

5. The rigid bronchoscope with a sealing bag according to claim 1, characterized in that: The flexible sealing hole (43) comprises at least one circular sealing hole with a tight-fitting diameter of 4.5 mm and a plurality of circular sealing holes with a tight-fitting diameter of 2.5 mm.

6. The rigid bronchoscope with a sealing bag according to claim 1, characterized in that: (a) a bellows (21) is provided at the connection portion between the hard operating tube (1) and the breathing connection port (2); (b) an end-tidal carbon dioxide monitoring interface (23) is provided at the breathing connection port (2) or the hard operating tube (1) and the communicating ventilation cavity; The above (a) and (b) are implemented individually or in parallel.

7. The rigid bronchoscope with a sealing bag according to claim 6, characterized in that: A ventilation filter membrane (22) is arranged between the hard operating tube (1) and the bellows (21), or between the bellows (21) and the breathing connection port (2).

8. The rigid bronchoscope with a sealing bag according to claim 1, characterized in that: The hard operating tube (1) is configured as a multi-lumen pipeline, and the multi-lumen pipeline comprises a ventilation cavity (11) and a plurality of instrument insertion cavities (14); A flexible sealing hole (43) is provided through the cover top (42) corresponding to each cavity; the flexible sealing hole (43) corresponding to the ventilation cavity (11) is a circular sealing hole with a diameter of 4.5 mm, and the flexible sealing hole (43) corresponding to the instrument insertion cavity (14) is a circular sealing hole with a diameter of 2.5 mm.

9. The rigid bronchoscope with a sealing bag according to claim 7, characterized in that: The hard operating tube (1) is configured as a multi-lumen pipeline, and the multi-lumen pipeline further comprises a video cable lumen (15).

10. The rigid bronchoscope with a sealing bag according to claim 1, characterized in that: The side vents (13) are three long holes whose long axes are parallel to the hard operating tube (1) and are evenly distributed on the cross section of the hard operating tube (1). The area of ​​each side vent (13) is greater than 12 mm. 2 .

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