Double-cuff single-lumen tracheal tube

Abstract

The present invention relates to a double-capsule single-lumen tracheal catheter, which comprises a catheter body and a catheter respiratory connector; a first catheter capsule and a second catheter capsule are arranged at the head of the catheter body, and both the first catheter capsule and the second catheter capsule are wrapped on the catheter body, and the first catheter capsule is located between the second catheter capsule and the end hole of the catheter body; the first catheter capsule and the second catheter capsule are connected to a capsule inflation and deflation mechanism; a catheter side hollowed-out area is arranged on the outer side of the arc-shaped head of the catheter body, and the catheter side hollowed-out area is located between the first catheter capsule and the second catheter capsule, and the catheter side hollowed-out area is communicated with an operating tube for the surgical side lung, and the surgical side lung can be operated as required through the operating tube for the surgical side lung and the catheter side hollowed-out area. The present invention can effectively realize the operations of deflating and inflating the surgical side lung, improve the convenience and controllability of the operation of cleaning secretions during the operation, and effectively improve the stability and reliability of the single-lung or double-lung ventilation state.

Description

Technical Field

[0001] The present invention relates to a tracheal catheter, especially a double-balloon single-lumen tracheal catheter, belonging to the technical field of tracheal catheters. Background Art

[0002] During thoracic surgery, in order to create sufficient surgical space, it is necessary to suspend the breathing of the operative side lung to cause the collapse of the operative side lung. At the same time, single-lung ventilation is performed on the non-operative side lung to meet the oxygen supply requirements during the operation. After the pulmonary operation is completed, it is necessary to temporarily ventilate the operative side lung to detect the airtightness of the cut edge of the operative side lung, and avoid complications such as pneumothorax caused by air leakage at the cut edge of the operative side lung after directly closing the chest wall. After the operation, double-lung ventilation is required again to re-inflate the collapsed operative side lung during the operation to achieve the purpose of respiratory gas exchange.

[0003] Currently, when performing single-lung ventilation, the most common and main method is to use a double-lumen bronchial catheter for airway management. The double-lumen bronchial catheter has the following disadvantages:

[0004] 1) The double-lumen bronchial catheter is limited by the inner diameter of the human trachea, resulting in a small diameter of a single lumen. During single-lung ventilation, especially in patients with asthma and COPD (chronic obstructive pulmonary disease), the airway pressure is relatively high, which may cause damage to the non-operative side lung. In patients with pulmonary bullae, it is easy to cause the rupture of the pulmonary bullae and pneumothorax;

[0005] 2) Since the double-lumen bronchial catheter is provided with two ventilation lumens, and affected by the catheter wall, the overall outer diameter of the double-lumen bronchial catheter is relatively thick, and the damage to the glottis and larynx during intubation is relatively large, and there are many complications. The most common ones are postoperative throat pain and hoarseness, and even dislocation of the arytenoid cartilage;

[0006] 3) The double-lumen bronchial catheter is limited by the inner diameter of the human trachea. Due to the limitation of the inner diameter of the glottis in children, the diameter of a single lumen is small, and it is impossible to produce a thinner product suitable for children, which limits its application in the pediatric population. The current double-lumen bronchial catheter can only be used for children over 10 years old at the minimum;

[0007] 4) The double-lumen bronchial catheter is limited by the inner diameter of the human trachea, resulting in a small diameter of a single lumen, which is not conducive to the operation of cleaning secretions. In some patients with poor lung function or other reasons who cannot resume spontaneous breathing after surgery and require mechanical ventilation support, at the end of the operation, it is necessary to remove the double-lumen bronchial catheter and re-insert a single-lumen tracheal catheter to facilitate respiratory management and secretion cleaning operations during ventilation support. This increases the workload of anesthesiologists. At the same time, it increases the related adverse reactions caused by intubation in patients. In some patients with poor intubation conditions, it may even lead to hypoxia, cardiac arrest, and even death due to intubation failure.

[0008] The bronchial blocker combined with a single-lumen tracheal tube is the most common method for one-lung ventilation and airway management besides the double-lumen bronchial tube. When respiratory support with the tracheal tube needs to be maintained after surgery, there is no need to change the tube, and the bronchial blocker can simply be removed. However, it also has many drawbacks:

[0009] 1). It is relatively difficult to position the bronchial blocker, and video tools are required for assistance. That is to say, operations need to be performed on both the video tools and the bronchial blocker simultaneously, and the operation is relatively complex, requiring experienced anesthesiologists to carry out smoothly;

[0010] 2). When positioning the bronchial blocker, the video tools and the bronchial blocker need to be inserted synchronously into the single-lumen tracheal tube used in combination, which determines that the lumen of the single-lumen tracheal tube cannot be less than 5.5 mm. That is to say, the bronchial blocker can only be used for patients over 6 years old, and it is difficult to use in children under 6 years old;

[0011] 3). During use, the bronchial blocker is used to block the bronchial orifice of the operative lung. It is relatively difficult to expel the gas in the operative lung; it is impossible to clean the secretions in the operative lung; when the operative lung needs to be inflated, the gas in the bronchial blocker balloon needs to be discharged, and the operative lung is inflated through the single-lumen tube, which will cause the blood or secretions in the bronchus of the operative lung to flow into the main trachea, resulting in pollution of the non-operative lung and the main trachea;

[0012] 4). The balloon of the bronchial blocker is not easy to fix, and the lung isolation effect is unstable. It is easy to shift during the operation, resulting in a poor lung isolation effect. The high-pressure low-volume balloon is likely to cause mucosal damage;

[0013] 5). If the tube cannot be removed after surgery and respiratory support is needed, the single-lumen tracheal tube used in combination needs to use a tracheal tube for subglottic secretion clearance, and its cost increases significantly;

[0014] 6). The manufacturing process of the bronchial blocker is relatively difficult, and the price is expensive, several times that of the double-lumen bronchial tube, imposing a heavy economic burden on patients.

[0015] Currently, when there is a lack of effective one-lung ventilation management tools for children, a single-lumen tracheal tube is often inserted into the non-operative side to implement one-lung ventilation. Of course, the single-lumen tracheal tube can also be used in groups other than children, but its disadvantages are very obvious:

[0016] 1). The single-lumen tracheal tube needs to be inserted into the bronchus of the non-operative side, resulting in the basic blockage of the bronchial orifice of the operative lung. It is relatively difficult to expel the gas in the operative lung, which is not conducive to the collapse of the operative lung and is not conducive to providing sufficient operating space for the operation;

[0017] 2) When the lung on the operative side needs to be inflated during or at the end of the operation, the single-lumen tracheal catheter needs to be retracted slightly, and the opening at the tip of the single-lumen tracheal catheter needs to be retracted into the main trachea to complete the inflation of the lung on the operative side under two-lung ventilation. The airway of children is relatively short, and the operation of retracting the catheter is likely to cause the tracheal catheter to slip out of the airway, which may lead to emergency lateral decubitus tracheal intubation, resulting in hypoxia, even cardiac arrest or even death;

[0018] 3) When the lung on the operative side needs to be temporarily inflated during the operation, the single-lumen tracheal catheter needs to be retracted slightly, and the opening at the tip of the single-lumen tracheal catheter needs to be retracted into the main trachea to be completed under two-lung ventilation. After that, the tip of the single-lumen tracheal catheter needs to be re-inserted into the non-operative side catheter. This operation is a positioning operation, and the depth needs to be relatively accurate, and it often takes several times to complete. Therefore, it may cause mucosal damage, bleeding at the bronchial opening, and even bronchospasm;

[0019] 4) Hemorrhage and mucus accumulation in the lung on the operative side above the balloon of the single-lumen tracheal catheter lack an effective suction method, which is likely to cause atelectasis due to blood clots or mucus blocking the bronchial opening on the operative side, or cause pollution of the non-operative side lung and the main trachea due to blood or mucus flowing into the non-operative side bronchus and the main trachea.

[0020] 5) If the catheter cannot be removed after the operation and respiratory support is required, the single-lumen tracheal catheter used in cooperation needs to use a subglottic secretion clearance tracheal catheter, and its cost increases significantly.

[0021] 6) When the single-balloon single-lumen tracheal catheter is used for long-term respiratory support, it may cause ischemic necrosis of the tracheal mucosa due to the balloon compressing the same position, and even lead to ulcers and scar formation, resulting in tracheal lumen stenosis.

[0022] In summary, there is a lack of a simple, effective, safe and practical tool for single-lung and two-lung ventilation management in clinical practice, which can effectively exhaust, inflate and clean the secretions of the lung on the operative side during the operation, does not require catheter removal and intubation operations when respiratory support needs to be retained at the end of the operation, can also clean the subglottic secretions when respiratory support is retained after the operation, and can rotate the position of the sealed balloon to avoid ischemic necrosis of the tracheal inner wall mucosa caused by compression. Summary of the Invention

[0023] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a double-balloon single-lumen tracheal catheter, which has a compact structure, can effectively exhaust, inflate and clean the secretions of the lung on the operative side during the operation, does not require catheter removal and intubation operations when respiratory support needs to be retained at the end of the operation, can also clean the subglottic secretions when respiratory support is retained after the operation, avoids ischemic necrosis of the tracheal inner wall mucosa caused by long-term compression, effectively realizes single-lung and two-lung ventilation management, and is convenient to use, safe and reliable.

[0024] According to the technical solution provided by the present invention, the double-capsule single-lumen tracheal catheter includes a catheter body and a catheter respiratory connector provided at the tail end of the catheter body. At the head end of the catheter body, there is a catheter body end hole, and the catheter body end hole is communicated with the catheter respiratory connector through the catheter body;

[0025] At the head of the catheter body, a catheter first capsule and a catheter second capsule are arranged at intervals. The catheter first capsule and the catheter second capsule are both wrapped on the catheter body. The catheter first capsule is located between the catheter second capsule and the catheter body end hole, and the catheter first capsule is adjacent to the head end of the catheter body; the catheter first capsule and the catheter second capsule are connected to a capsule inflation and deflation mechanism, and through the capsule inflation and deflation mechanism, the required inflation and deflation of the catheter first capsule and / or the catheter second capsule can be carried out;

[0026] A catheter side hollowed-out area is arranged on the outer side wall of the head of the catheter body. The catheter side hollowed-out area is located between the catheter first capsule and the catheter second capsule. The catheter side hollowed-out area includes a number of catheter side holes. The catheter side holes in the catheter hollowed-out area are isolated from the lumen in the catheter body, and the catheter side holes in the catheter side hollowed-out area are communicated with the surgical side lung operation tube;

[0027] When single-lung ventilation is carried out by using the catheter body, the catheter first capsule and / or the catheter second capsule, the catheter side hollowed-out area is located above the lower edge of the bronchial orifice of the surgical side lung. Through the cooperation of the surgical side lung operation rod and the catheter side hollowed-out area, surgical side lung management operations can be carried out on the surgical side lung. The surgical side lung management operations include the exhaust and collapse of the surgical side lung, the ventilation and inflation of the surgical side lung, and the cleaning of required negative pressure secretions;

[0028] A surgical side lung operation connector is arranged at the end of the surgical side lung operation tube outside the catheter body. The surgical side lung operation tube can be adaptively connected to a respiratory support mechanism and / or a negative pressure suction mechanism through the surgical side lung operation connector.

[0029] The capsule inflation and deflation mechanism includes a catheter first capsule inflation and deflation connecting pipe connected and communicated with the catheter first capsule and a catheter second capsule inflation and deflation connecting pipe connected and communicated with the catheter second capsule. A catheter first capsule inflation and deflation connecting pipe sealing valve is arranged at the end of the catheter first capsule inflation and deflation connecting pipe, and a catheter second capsule inflation and deflation connecting pipe sealing valve is arranged at the end of the catheter second capsule inflation and deflation connecting pipe; through the catheter first capsule inflation and deflation connecting pipe and the catheter first capsule inflation and deflation connecting pipe sealing valve, the catheter first capsule can be inflated and deflated, and through the catheter second capsule inflation and deflation connecting pipe and the catheter second capsule inflation and deflation connecting pipe sealing valve, the catheter second capsule can be inflated and deflated.

[0030] The surgical lung operation connector includes a respiratory operation connecting pipe communicated with the surgical lung operation pipe, a suction operation connector pipe, and a connector sealing mechanism adapted to the respiratory operation connecting pipe and the suction operation connector pipe. It can be adaptively connected to the respiratory support mechanism through the respiratory operation connecting pipe and to the negative pressure suction mechanism through the suction operation connector pipe;

[0031] The connector sealing mechanism includes a respiratory operation connecting pipe head for sealing the respiratory operation connecting pipe and a suction operation connector pipe head for sealing the suction operation connector pipe.

[0032] The catheter body includes a pipe main body part and an arc-shaped head connected to the pipe main body part. The arc-shaped head is communicated with the pipe main body part, and the joint part of the arc-shaped head and the pipe main body part is located above the first catheter balloon. The included angle α between the axis of the pipe main body part and the axis of the arc-shaped head is 15° to 45°; the side hollow area of the catheter and the arc-shaped opening bottom of the arc-shaped head are respectively located on the corresponding two sides of the catheter body.

[0033] On one side of the head of the catheter body, side ventilation holes are also provided. The side ventilation holes are communicated with the lumen of the catheter body. The first catheter balloon annularly wraps the corresponding outer wall except the side ventilation holes at the head of the catheter body. The side ventilation holes are located between the upper edge and the lower edge of the first catheter balloon. The side ventilation holes and the side hollow area of the catheter are respectively located on the corresponding two sides of the catheter body. The gas in the catheter body can be discharged through the side ventilation holes.

[0034] The end hole of the catheter body is set as an inclined wedge-shaped opening or a flat-shaped opening at the head end of the catheter body;

[0035] When the end hole of the catheter body is an inclined wedge-shaped opening at the head end of the catheter body, the slope surface formed by the inclined wedge-shaped opening and the side hollow area on the catheter body are respectively located on the corresponding two sides of the catheter body;

[0036] When the end hole of the catheter body is a flat-shaped opening at the head end of the catheter body, head end exhaust holes are provided at the head end of the catheter body. The head end exhaust holes penetrate the pipe wall of the catheter body. The head end exhaust holes are located between the lower edge of the first catheter balloon and the end hole of the catheter body. The head end exhaust holes and the side hollow area of the catheter are respectively located on the corresponding two sides of the catheter body.

[0037] The catheter respiratory connector includes a connector catheter connecting pipe adapted to be connected to the tail end of the catheter body and a connector connecting sleeve for being adaptively connected to a ventilator / anesthesia machine. The tail end of the catheter body can be sleeved on the connector catheter connecting pipe, and the connector connecting sleeve can be sleeved on the connector catheter connecting pipe. The connector connecting sleeve can be communicated with the catheter body through the connector catheter connecting pipe, and the connector connecting sleeve can rotate relative to the connector catheter connecting pipe and the catheter body.

[0038] A tooth pad mechanism for spreading the upper incisor and the lower incisor is arranged on the catheter body. The tooth pad mechanism can be locked on the catheter body. When the locking state between the tooth pad mechanism and the catheter body is released, the tooth pad mechanism can move on the catheter body relative to the catheter body.

[0039] The tooth pad mechanism comprises a tooth pad locking connection sleeve that can be sleeved on the catheter body and a locking adjustment connecting tube that can be sleeved on the catheter body and can be adapted to be connected with the tooth pad locking connection sleeve, and a tooth pad sleeve for tooth occlusion is sleeved on the locking adjustment connecting tube;

[0040] An internal thread of the adjusting connecting tube is arranged on the inner wall of the locking adjusting connecting tube, and the wall thickness of the locking adjusting connecting tube changes gradually; an external thread of the locking sleeve that can be matched with the internal thread of the adjusting connecting tube is arranged on the outer wall of the tooth pad locking connecting sleeve, and the head end of the tooth pad locking connecting sleeve can extend into the locking adjusting connecting tube and be tightly connected with the locking adjusting connecting tube, and the tail end of the tooth pad locking connecting sleeve is divided into a plurality of connecting locking pieces;

[0041] The locking and adjusting connecting tube and the tooth pad locking connecting sleeve move relative to each other so that when the connecting locking piece contracts toward the catheter body, the tooth pad locking connecting sleeve and the catheter body can be locked with each other; when the locking and adjusting connecting tube and the tooth pad locking connecting sleeve move relative to each other so that the connecting locking piece opens away from the catheter body, the locking state of the tooth pad locking connecting sleeve and the catheter body can be released;

[0042] The tooth pad sleeve is provided with a tooth pad groove allowing teeth to be embedded, and the tooth pad grooves are symmetrically distributed on the tooth pad sleeve; the tooth pad sleeve is also provided with at least one sleeve body groove that can be adapted to the secretion cleaning tube, and the sleeve body groove is located between two tooth pad grooves on the tooth pad sleeve, and the secretion cleaning tube can be placed in the oral cavity through the sleeve body groove.

[0043] It also includes a video image acquisition mechanism that can acquire the position status of the catheter body when in use. The video image acquisition mechanism is adaptably connected to the catheter body, and a marking color is painted on the first and second catheter balloons.

[0044] The video head image acquisition mechanism includes a sampling connecting rod that can be embedded in the catheter body and a connecting rod video head located at the head end of the sampling connecting rod, the length of the sampling connecting rod is greater than the length of the catheter body; the sampling connecting rod can make the connecting rod video head pass through the end hole of the catheter body, or the sampling connecting rod can withdraw the connecting rod video head from the catheter body; the connecting rod video head can be electrically connected to the connecting rod video output connector through the connecting rod video line buried in the sampling connecting rod;

[0045] A video catheter connector is arranged at the end of the sampling connecting rod, and the catheter breathing connector is detachably connected to the catheter body. When the catheter breathing connector is detached from the catheter body, the video catheter connector is adaptively connected to the tail end of the catheter body, and the video catheter connector is detachably connected to the tail end of the catheter body;

[0046] After the video catheter connector is adaptively connected to the catheter body, the sampling connecting rod can pass through and enter the catheter body; the video catheter connector is in communication with the catheter body, and the catheter body can be adaptively connected to a ventilator / anesthesia machine through the video catheter connector;

[0047] The sampling connecting rod includes a number of uniformly distributed connecting rod pieces, and a gas flow groove allowing gas to pass through can be formed between adjacent connecting rod pieces; gas enters the catheter body through the video catheter connector, and the gas in the catheter body flows under the guidance of the gas flow groove and can be discharged through the side ventilation part of the catheter and the end hole of the catheter body.

[0048] Advantages of the present invention: The side hollow area of the catheter is located between the first catheter bladder and the second catheter bladder. When the catheter body is used to ventilate the non-operative side lung, the side hollow area of the catheter can correspond to the operative side lung. The operative side lung operation tube is in communication with the side hollow area of the catheter, and the operative side lung operation tube can be connected to a ventilator / anesthesia machine or a negative pressure suction device, so as to realize operations such as deflation, inflation, and secretion cleaning of the operative side lung. When the side ventilation holes correspond to the operative side lung, the catheter body and the side ventilation holes can be used to simultaneously ventilate the operative side lung and the non-operative side lung. The head end exhaust hole of the catheter body can be used to provide ventilation support for the upper lobe bronchus of the right lung; during use, it is possible to control the first catheter bladder and the second catheter bladder to alternately be in an inflated state, that is, it can avoid the tracheal inner wall mucosa from being compressed for a long time and ischemic necrosis, so that during the operation, it can effectively exhaust, inflate, and clean the secretions of the operative side lung. When respiratory support needs to be retained after the operation, there is no need for extubation and intubation operations. When respiratory support is retained after the operation, it is also possible to clean the subglottic secretions, effectively realizing the ventilation management of single lung and double lungs, being convenient to use, safe and reliable. Description of the Drawings

[0049] Figure 1 Is a perspective view of an implementation of the tracheal catheter of the present invention.

[0050] Figure 2 Is a schematic structural diagram of an implementation of the tracheal catheter of the present invention.

[0051] Figure 3 Is Figure 1 、 Figure 2 The cross-sectional view corresponding to the implementation in.

[0052] Figure 4 Is a schematic diagram of the present invention when side ventilation holes are provided on the catheter body.

[0053] Figure 5 Is for Figure 4 The cross-sectional view corresponding to the corresponding implementation.

[0054] Figure 6It is a cross-sectional view of the video image acquisition mechanism of the present invention in cooperation with the catheter body.

[0055] Figure 7 It is a perspective view of the video image acquisition mechanism of the present invention in cooperation with the catheter body.

[0056] Figure 8 It is a perspective view of the video image mechanism of the present invention in cooperation with the catheter body having side air vents.

[0057] Figure 9 It is an implementation schematic diagram of the video image acquisition mechanism of the present invention.

[0058] Figure 10 It is a partial enlarged view of the sampling connecting rod of the present invention.

[0059] Figure 11 It is a perspective view of the video catheter connector of the present invention.

[0060] Figure 12 It is a cross-sectional view of the video catheter connector of the present invention.

[0061] Figure 13 It is a perspective view of the video air vent connecting pipe of the present invention.

[0062] Figure 14 It is a perspective view of the present invention.

[0063] Figure 15 It is a perspective view of the video connection connecting pipe of the present invention.

[0064] Figure 16 It is a perspective view of the first annular body rotatably connected to the present invention.

[0065] Figure 17 It is a perspective view of the catheter respiratory connector of the present invention.

[0066] Figure 18 It is a cross-sectional view of the catheter respiratory connector.

[0067] Figure 19 It is a perspective view of the mouthguard mechanism of the present invention.

[0068] Figure 20 It is a perspective view of the connection and cooperation between the mouthguard sleeve and the mouthguard locking connection sleeve of the present invention.

[0069] Figure 21 It is a perspective view of the connection and cooperation between the locking adjustment connecting pipe and the mouthguard locking connection sleeve of the present invention.

[0070] Figure 22 It is a cross-sectional view of the locking adjustment connecting pipe of the present invention.

[0071] Figure 23 It is a simplified schematic diagram between the pipe main body part and the arc-shaped head of the present invention.

[0072] Description of reference numerals in the drawings: 1 - catheter body, 2 - first catheter bladder, 3 - second catheter bladder, 4 - side holes of the catheter, 5 - inflation / deflation connecting tube for the first catheter bladder, 6 - sealing valve for the inflation / deflation connecting tube of the first catheter bladder, 7 - joint connecting sleeve, 8 - mouthguard sleeve, 9 - mouthguard groove, 10 - protrusion on the mouthguard sleeve, 11 - sleeve body groove, 12 - sealing valve for the inflation / deflation connecting tube of the second catheter bladder, 13 - operation tube for the surgical side lung, 14 - operation breathing connecting tube, 15 - suction adapter tube, 16 - sealing head for the operation breathing connecting tube, 17 - carrier plate for the sealing head, 18 - inflation / deflation connecting tube for the second catheter bladder, 19 - locking and adjusting connecting tube, 20 - sealing head for the suction adapter tube, 21 - connecting body of the carrier plate, 22 - connecting tube between the joint and the catheter, 23 - side ventilation holes, 24 - mouthguard locking connecting sleeve, 25 - connecting rod video head, 26 - connecting rod video cable, 27 - video output connecting head of the connecting rod, 28 - sampling connecting rod, 29 - video ventilation connecting tube, 30 - adjusting transition connecting tube, 31 - video connecting tube, 32 - first rotating connecting ring body, 33 - second rotating connecting ring body, 34 - side tube of the video ventilation line body, 35 - connecting rod piece, 36 - connecting rod hole, 37 - external thread of the connecting rod, 38 - inner cavity of the ventilation connecting tube, 39 - side tube positioning and sealing body, 40 - internal thread for transition adjustment, 41 - lower body part of the ventilation connecting tube, 42 - first rotating connecting groove, 43 - second rotating connecting groove, 44 - end plate of the video connecting tube, 45 - rotating positioning groove of the video connecting tube, 46 - inner limiting block of the video connecting tube, 47 - annular body, 48 - end groove of the annular body, 49 - inner step of the annular body, 50 - wall groove of the joint connecting sleeve, 51 - groove of the joint connecting sleeve, 52 - positioning groove of the joint connecting sleeve, 53 - convex ring of the connecting tube between the joint and the catheter, 54 - internal thread of the adjusting connecting tube, 55 - split groove of the locking piece, 56 - connecting and locking piece, 57 - external thread of the locking sleeve body, 58 - end hole of the catheter body, 59 - end plate of the connecting tube between the joint and the catheter, 60 - main body part of the tube, and 61 - arc-shaped head. Detailed implementation manners

[0073] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0074] As Figure 1 , Figure 2 and Figure 3 shown: In order to effectively implement the operations of deflating and inflating the surgical side lung and improve the convenience and controllability of the operation for cleaning secretions during the operation, the present invention includes a catheter body 1 and a catheter breathing connector provided at the tail end of the catheter body 1. At the head end of the catheter body 1, there is a catheter body end hole 58, and the catheter body end hole 58 can communicate with the catheter breathing connector through the catheter body 1;

[0075] The first catheter bladder 2 and the second catheter bladder 3 are arranged at intervals at the head of the catheter body 1. Both the first catheter bladder 2 and the second catheter bladder 3 are wrapped around the catheter body 1. The first catheter bladder 2 is located between the second catheter bladder 3 and the end hole 58 of the catheter body, and the first catheter bladder 2 is adjacent to the head end of the catheter body 1. The first catheter bladder 2 and the second catheter bladder 3 are connected to the bladder inflation and deflation mechanism, and the required inflation and deflation of the first catheter bladder 2 and / or the second catheter bladder 3 can be performed through the bladder inflation and deflation mechanism.

[0076] A catheter side hollowed-out area is arranged on the outer side wall of the head of the catheter body 1. The catheter side hollowed-out area is located between the first catheter bladder 2 and the second catheter bladder 3. The catheter side hollowed-out area includes a number of catheter side holes 4. The catheter side holes 4 in the catheter hollowed-out area are isolated from the lumen in the catheter body 1, and the catheter side holes 4 in the catheter side hollowed-out area are communicated with the surgical side lung operation tube 13.

[0077] When single-lung ventilation is performed using the catheter body 1, the first catheter bladder 2 and / or the second catheter bladder 3, the catheter side hollowed-out area is located above the lower edge of the bronchial orifice of the surgical side lung. Through the cooperation of the surgical side lung operation rod 13 and the catheter side hollowed-out area, surgical side lung management operations can be performed on the surgical side lung. The surgical side lung management operations include the exhaust and deflation of the surgical side lung, the ventilation and inflation of the surgical side lung, and the cleaning of the required negative-pressure secretions.

[0078] A surgical side lung operation joint is arranged at the end of the surgical side lung operation tube 13 outside the catheter body 1. The surgical side lung operation tube 13 can be adaptively connected to the respiratory support mechanism and / or the negative pressure suction mechanism through the surgical side lung operation joint.

[0079] Specifically, the catheter body 1, the catheter respiratory connection head, the first catheter bladder 2, and the second catheter bladder 3 all need to be made of materials meeting medical standards. The length, outer diameter, etc. of the catheter body 1 can all adopt the existing common specifications, which can be specifically selected according to needs and will not be elaborated here. The catheter respiratory connection head is connected to the tail end of the catheter body 1. The catheter body 1 can be adaptively connected to a ventilator / anesthesia machine for respiratory support through the catheter respiratory connection head, so that the required respiratory support can be performed through the catheter body 1. Of course, after the catheter respiratory connection head is connected to the tail end of the catheter body 1, the sealing ability at the connection between the catheter body connection head and the tail end of the catheter body 1 needs to be ensured. The catheter body end hole 58 is located at the head end of the catheter body 1. The catheter body end hole 58 is communicated with the catheter body 1. During the respiratory support process, the gas entering the catheter body 1 can be released through the catheter body end hole 58.

[0080] The hollow area on the side of the catheter does not penetrate the wall on the side of the catheter body 1, that is, the hollow area on the side of the catheter is isolated from the lumen in the catheter body 1. Therefore, when the catheter body 1 is used for respiratory support, the gas in the catheter body 1 will not be discharged through the hollow area on the side of the catheter.

[0081] In the embodiment of the present invention, a first catheter bladder 2 and a second catheter bladder 3 are provided at the head end of the catheter body 1. The first catheter bladder 2 and the second catheter bladder 3 both wrap the outer wall of the catheter body 1, and the first catheter bladder 2 and the second catheter bladder 3 are both annular. Specifically, the first catheter bladder 2 is closer to the end hole 58 of the catheter body, that is, the first catheter bladder 2 is located between the second catheter bladder 3 and the end hole 58 of the catheter body. The hollow area on the side of the catheter communicates with the operating tube 13 for the surgical side lung. The operations that can be performed through the cooperation of the operating tube 13 for the surgical side lung and the hollow area on the side of the catheter include deflating the lung, inflating the lung or clearing secretions, and the clearing of secretions includes clearing secretions.

[0082] In the embodiment of the present invention, the hollow area on the side of the catheter communicates with the operating tube 13 for the surgical lung through the side hole 4 of the catheter. The operations that can be performed on the surgical side lung through the cooperation of the operating tube 13 for the surgical lung and the hollow area on the side of the catheter include deflating the lung, inflating the lung, supplying oxygen or clearing secretions. Among them, deflating the lung specifically refers to discharging the gas in the surgical side lung to deflate the surgical side lung and create space in the surgical side thoracic cavity for convenient surgical operation; inflating the lung specifically refers to sending external gas into the surgical side lung to re-inflate the deflated lung; the operation of clearing secretions specifically refers to sucking out the secretions generated during the operation to reduce atelectasis caused by the blockage of small airways (clinically collectively referred to as microbronchi with an inner diameter less than 2 mm) by secretions and reduce lung infections caused by secretions.

[0083] In specific use, when the surgical lung is the left lung, the right lung needs to be supported for breathing during the operation. After anesthesia, the catheter body 1 is inserted into the airway using common technical means, and the depth and position of the catheter body 1 are adjusted so that the first catheter bladder 2 is located in the right bronchial opening, and the second catheter bladder 3 is behind the endotracheal carina. At this time, the side hollow area of ​​the catheter is located behind the left side of the endotracheal carina, so that the side hollow area of ​​the catheter is directly opposite to the bronchial opening of the left lung. The first catheter bladder 2 is filled with an appropriate amount of gas, the first catheter bladder 2 expands, and the first catheter bladder 2 blocks the right bronchus. At the same time, the second catheter bladder 3 blocks the endotracheal carina. The catheter body 1 provides respiratory support to the right lung through the hole 58 at the end of the catheter body, and at the same time, can manage the left lung through the surgical lung operation tube 13 and the hollow area on the side of the catheter, such as: the left lung is connected to the outside world through the surgical lung operation tube 13 and the hollow area on the side of the catheter, and the gas of the left lung can be discharged to achieve the collapse of the left lung; or when the surgical lung operation tube 13 and the hollow area on the side of the catheter are connected to an external negative pressure suction device, operations such as secretion cleaning can be achieved; when gas can be delivered to the left lung through the surgical lung operation tube 13 and the hollow area on the side of the catheter, the collapsed left lung can be expanded, that is, the lung inflation operation can be achieved; pure oxygen can be delivered to the left lung through the surgical lung operation tube 13 and the hollow area on the side of the catheter, and auxiliary oxygen supply support can be achieved.

[0084] Before the operation begins, the catheter breathing connector at the tail of the catheter body 1 is connected to the ventilator / anesthesia machine, and the ventilator / anesthesia machine provides respiratory support to the right lung to ensure the patient's oxygen supply. At the same time, the hollow area on the side of the catheter and the surgical lung operation tube 13 are used to connect the left bronchus of the left lung to the outside world, so that the gas in the left lung is discharged and the left lung is collapsed, so that there is enough surgical space in the left chest cavity. If necessary, a negative pressure suction device can be connected to the tail of the surgical lung operation tube 13 to implement negative pressure suction, so that the gas in the left lung is discharged. When the lung compliance of COPD patients is poor, negative pressure suction is often required to assist the discharge of gas in the surgical side lung.

[0085] At the beginning of the operation, the catheter body 1 supports the right lung through the hole 58 at the end of the catheter body, implements the right lung single-lung ventilation, and ensures the oxygen supply of the patient. The left lung is in a collapsed state, which avoids damage to the left lung during the chest wall incision. At the same time, during the operation, the chest cavity on the surgical side has enough space to facilitate the operation, reduce the difficulty of the operation, and improve the safety of the operation.

[0086] For some patients with poor lung exchange function, the oxygen supply of the right lung may be insufficient for ventilation alone. Ventilation alone of the right lung during surgery may cause hypoxemia in the patient, increase the surgical risk of the patient, and be detrimental to the patient. At this time, oxygen can be connected to the tail of the surgical lung operation tube 13 to supply oxygen to the left lung on the surgical side at low pressure, so that the collapsed small airways of the left lung are filled with oxygen, and oxygen can be exchanged with blood, thereby increasing the oxygen supply to the patient and improving hypoxemia.

[0087] During the operation, when it is necessary to perform negative pressure suction on the left lung to clean the secretions, only the tail end of the operation lung tube 13 needs to be connected to the negative pressure device. During the operation, the operated lung is on the upper side and the non-operated side is on the lower side. When there are secretions in the operated lung, under the action of gravity, the secretions will flow to the bronchial orifice of the operated side, and the secretions can be aspirated and cleaned through the operation lung tube 13 and the hollow area on the side of the catheter. When necessary, a small amount of normal saline can be injected into the bronchus of the operated lung through the operation lung tube 13 to dilute the secretions in the bronchus of the operated lung, and then aspirated by negative pressure to ensure the effect of negative pressure cleaning. In principle, the normal saline for each irrigation should be controlled within 20 ml to avoid excessive absorption of normal saline by the lung, resulting in postoperative atelectasis due to the reduction of the surfactant distributed on the inner surface of the alveoli. The operation of injecting normal saline into the operated lung through the operation lung tube 13 and the airbag void area for flushing and aspiration is the same as the operation of flushing and aspirating the bronchial anastomosis with normal saline when the anastomosis of the transplanted lung is completed in the existing lung transplantation operation. This is well-known to those skilled in the art and will not be elaborated here.

[0088] When the operation on the left lung is completed, it is necessary to detect the tightness of the left lung cutting anastomosis. The left lung can be inflated with gas through the operation lung tube 13 and the hollow area on the side of the catheter to achieve the lung inflation operation. If the cutting and suturing incision leaks air, the gas in the left lung is discharged again through the operation lung tube 13 to deflate the left lung, which is convenient for strengthening the repair of the leaking cutting and suturing site until the detection of the cutting and suturing incision is satisfactory, and then the operation on the left lung can be completed.

[0089] After the surgical operation on the left lung is completed, bilateral lung ventilation should be restored in a timely manner. At this time, first, negative pressure suction is performed on the left lung through the surgical lung operation tube 13 to clean the secretions. After the secretions are cleaned, the left lung is inflated to make the left lung expand and re-expand (medically referring to the state where air reappears in the lung tissue). Then, the catheter body 1 is retracted 3 cm - 5 cm, so that the first catheter balloon 2 retracts into the main trachea. The hollow area on the side of the catheter corresponds to the side wall of the main trachea and can form a blind hole state. However, the ventilator / anesthesia machine can support bilateral lung ventilation after being matched with the catheter body 1 through the catheter respiratory connector at the tail end of the catheter body 1. On the one hand, it reduces the irritation of the first catheter balloon 2 to the carina and reduces the cardiovascular response; on the other hand, it can minimize the deflation time of the surgical lung, reduce the reduction of alveolar surfactant, and reduce the incidence of atelectasis caused thereby. Similarly, when the surgical lung is the right lung, during the operation, left single-lung respiratory support is required. After anesthesia, the catheter body 1 is inserted into the main trachea by using common technical means, and the depth and position of the catheter body 1 are adjusted so that the first catheter balloon 2 is located on the left side of the carina, that is, the first catheter balloon 2 is located within the opening of the left bronchus, and the second catheter balloon 3 is located behind the carina in the trachea. At this time, the hollow area on the side of the catheter is located behind the right side of the carina in the main trachea, so that the hollow area on the side of the catheter is directly opposite the opening of the right bronchus. An appropriate amount of gas is filled into the first catheter balloon 2 and the second catheter balloon 3, and the first catheter balloon 2 and the second catheter balloon 3 expand. The first catheter balloon 2 blocks the left bronchus, and at the same time, the second catheter balloon 3 blocks the main trachea. The catheter body 1 can support the respiration of the left lung through the hole 58 at the end of the catheter body, and at the same time, can manage the right lung through the surgical lung operation tube 13 and the hollow area on the side of the catheter. The specific operation process is similar to that during the left-sided operation and will not be elaborated here.

[0090] In some special cases, when sequential surgeries on both lungs are required, first, the catheter body 1 is positioned according to the above method, so that the first catheter balloon 2 enters the bronchial opening of the A-side lung, and the hollow area on the side of the catheter is directly opposite the bronchial opening of the B-side lung, until the required surgery on the B-side lung is completed. After the surgery on the B-side lung is completed, the catheter body 1 is retracted 3 cm - 5 cm, so that the first catheter balloon 2 retracts into the main trachea. The catheter body 1 is repositioned so that the first catheter balloon 2 enters the bronchial opening of the B-side lung, and the hollow area on the side of the catheter is directly opposite the bronchial opening of the A-side lung, until the surgery on the A-side lung is completed. In this way, bilateral lung surgeries can be sequentially completed without replacing the airway management tool. Of course, when operating on the catheter body 1, the second catheter balloon 3 needs to perform corresponding operations with the first catheter balloon 2, such as the first catheter balloon 2 and the second catheter balloon 3 being in a deflated or inflated state synchronously to meet the operation requirements such as surgery on the corresponding side lung. Of course, when performing the above conversion between the A-side lung and the B-side lung, some operations such as checking the sealing of the cut anastomosis and cleaning the secretions also need to be performed. The specific operation process can refer to the above description and will not be elaborated here.

[0091] In some patients with extremely poor lung function, when the postoperative lung function is insufficient to support the patient's spontaneous breathing (the judgment criterion is that the patient's arterial oxygenation index is lower than 250 mmHg), the tracheal catheter cannot be removed after the operation. Only the catheter body 1 needs to be retracted 3 cm - 5 cm, so that the first catheter balloon 2 retracts into the main trachea. The side hollow area of the catheter corresponds to the side wall of the main trachea, forming a blind hole state. The ventilator / anesthesia machine can cooperate with the catheter body 1 through the catheter respiratory connector at the tail end of the catheter body 1 to achieve double-lung ventilation and perform postoperative respiratory management.

[0092] When performing double-lung ventilation, the first catheter balloon 2 and the second catheter balloon 3 can be alternately inflated and deflated through the balloon inflation / deflation mechanism to seal the main trachea. That is, when one of the first catheter balloon 2 and the second catheter balloon 3 is in the inflated state, the other is in the deflated and sunken state. The inflation / deflation interval is generally within 2 hours, which can enable the tracheal inner wall mucosa corresponding to the first catheter balloon 2 and the second catheter balloon 3 to obtain sufficient blood supply when the balloon deflates, and can avoid the tracheal inner wall mucosa corresponding to the first catheter balloon 2 and the second catheter balloon 3 being compressed for a long time, resulting in reduced blood supply, ulcers, and even scar stenosis, effectively ensuring the safety of double-lung ventilation. When the first catheter balloon 2 is in the inflated state, it can seal the main trachea through the first catheter balloon 2, while the second catheter balloon 3 is in the deflated and sunken state, and the second catheter balloon 3 will not compress the corresponding inner wall of the main trachea; similarly, when the second catheter balloon 3 is in the inflated state, it seals the main trachea through the second catheter balloon 3, and when the first catheter balloon 2 is in the deflated and sunken state, the first catheter balloon 2 will not compress the corresponding inner wall in the main trachea.

[0093] It should be noted that when the first catheter balloon 2 is in the inflated state and the second catheter balloon 3 is in the deflated and sunken state, the function of subglottic sputum aspiration can be achieved through the cooperation of the surgical lung operation tube 13 and the side hollow area of the catheter. Secretions in the oral cavity and above the first catheter balloon 2 in the main trachea will accumulate above the first catheter balloon 2 under the action of gravity. When negative pressure is connected to the tail of the surgical lung operation tube 13, the accumulated secretions can be cleaned. When necessary, it can be rinsed and aspirated with normal saline to reduce the resulting lung infections. At the same time, when the second catheter balloon 3 is in the inflated state and the first catheter balloon 2 is in the deflated and sunken state, the surgical lung operation tube 13 needs to be blocked or clamped to prevent gas from leaking through the side hollow area of the catheter and the surgical lung operation tube 13 during double-lung ventilation, ensuring the airtightness during ventilation.

[0094] Furthermore, the side hollowed-out area of the catheter includes a number of catheter side holes 4, and the multiple catheter side holes 4 are arranged along the length direction of the catheter body 1; the head of the surgical lung operation tube 13 is embedded in the catheter body 1, and the tail of the surgical lung operation tube 13 is located outside the catheter body 1. A surgical lung operation joint is provided at the tail end of the surgical lung operation tube 13, and the surgical lung operation tube 13 can be adaptively connected to a respiratory support mechanism and / or a negative pressure suction mechanism through the surgical lung operation joint.

[0095] In the embodiment of the present invention, the side hollowed-out area of the catheter includes a number of catheter side holes 4. The catheter side holes 4 can be arranged in an array on the catheter body 1, or only one catheter side hole 4 with a larger aperture is provided on the catheter body 1. The specific situation can be selected according to actual needs and will not be elaborated here. As Figure 1 and Figure 3 shown, the situation where a row of catheter side holes 4 is provided on the catheter body 1 is shown. The arrangement direction of the multiple catheter side holes 4 is consistent with the length direction of the catheter body 1, so that the surgical lung operation tube 13 corresponds to and communicates with the surgical side lung bronchial opening through the catheter side holes 4 in the side hollowed-out area of the catheter, thereby performing relevant operations on the surgical side lung through the surgical lung operation tube 13.

[0096] During specific implementation, in order to be able to communicate with the catheter side holes 4, the head of the surgical lung operation tube 13 is embedded in the catheter body 1. Of course, the main body part of the surgical lung operation tube 13 is also embedded in the tube wall of the catheter body 1, and the tail of the surgical lung operation tube 13 is located outside the catheter body 1. A surgical lung operation joint is provided at the tail end of the surgical lung operation tube 13, and it can be adaptively connected to a ventilator / anesthesia machine or a negative pressure suction mechanism through the surgical lung operation joint; among them, the required gas can be sent into the surgical lung operation tube 13 through the ventilator / anesthesia machine, and negative pressure suction can be achieved through the negative pressure suction mechanism, and the gas in the surgical side lung can be extracted, as well as corresponding operations such as aspirating sputum.

[0097] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 shown, the surgical lung operation joint includes an operation and respiration connection tube 14 that communicates with the tail end of the surgical lung operation tube 13. An aspiration joint tube 15 is provided on the operation and respiration connection tube 14, and the aspiration joint tube 15 can communicate with the surgical lung operation tube 13 through the operation and respiration connection tube 14;

[0098] It further includes a joint sealing mechanism that can be adapted to the operation breathing connection tube 14 and the suction joint tube 15. The joint sealing mechanism includes an operation breathing connection tube head 16 that can seal the operation breathing connection tube 14 and a suction joint tube head 20 that can seal the suction joint tube 15. The operation breathing connection tube head 16 and the suction joint tube head 20 are respectively located on both sides of the head carrier plate 17, and the head carrier plate 17 is adaptively connected to the surgical side lung operation tube 13 through the carrier plate connecting body 21.

[0099] In the embodiment of the present invention, the operation breathing connection tube 14 is connected to and communicates with the tail end of the surgical side lung operation tube 13. The outer diameter of the operation breathing connection tube 14 is generally larger than that of the surgical side lung operation tube 13. Through the operation breathing connection tube 14, it can be adapted to connect with a ventilator / anesthesia machine, that is, the size of the operation breathing connection tube 14, etc. is adapted to the ventilator / anesthesia machine. The specific size, shape, etc. of the operation breathing connection tube 14 are matched according to the corresponding interface of the ventilator / anesthesia machine, which is well-known to those skilled in the art and will not be elaborated here. The suction joint tube 15 is located on the operation breathing connection tube 14. The length direction of the suction joint tube 15 and the length direction of the operation breathing connection tube 14 can be perpendicular to each other. The suction joint tube 15 can communicate with the operation breathing connection tube 14, so that the suction joint tube 15 can communicate with the surgical side lung operation tube 13 through the operation breathing connection tube 14. The diameter of the suction joint tube 15 is smaller than that of the operation breathing connection tube 14. The size and shape of the suction joint tube 15 need to be matched with the connected negative pressure suction device, so that the suction joint tube 15 can be adapted to connect with the negative pressure suction device.

[0100] In order to avoid the mutual influence between the lung inflation process and the lung deflation and liquid suction processes, the joint sealing mechanism can seal the operation breathing connection tube 14 and / or the suction joint tube 15. Specifically, the joint sealing mechanism can seal the operation breathing connection tube 14 through the operation breathing connection tube head 16 and seal the suction joint tube 15 through the suction joint tube head 20. Generally, the operation breathing connection tube head 16 covers the operation breathing connection tube 14 or can be inserted into the operation breathing connection tube 14, as long as it can seal the operation breathing connection tube 14; the suction joint tube head 20 covers or is inserted into the suction joint tube 15 to seal the suction joint tube 15. The specific form can be selected according to needs and will not be elaborated here.

[0101] In the embodiment of the present invention, the operation breathing connection tube head 16 and the suction joint tube head 20 are located on the head carrier plate 17. However, the operation breathing connection tube head 16 and the suction joint tube head 20 are located on both sides of the head carrier plate 17. The head carrier plate 17 is adaptively connected to the operation tube 13 of the surgical side lung through the carrier plate connection body 21. The operation breathing connection tube head 16 and the suction joint tube head 20 can also be located on the same side of the head carrier plate 17. Specifically in implementation, the carrier plate connection body 21 can be a connecting wire body, or in a foldable and stretchable form. After the carrier plate connection plate 21 is connected to the operation tube 13 of the surgical side lung, the movement of the head carrier plate 17 can be realized, so that the sealing of the suction joint tube 15 and the operation breathing connection tube 14 can be realized. At the same time, through the connection between the operation tubes 13 of the surgical side lung, the loss of the head carrier plate 17 and the like can be avoided, and the convenience of use can be improved.

[0102] Further, the capsule inflation and deflation mechanism includes a catheter first capsule inflation and deflation connecting tube 5 connected and communicated with the catheter first capsule 2 and a catheter second capsule inflation and deflation connecting tube 18 connected and communicated with the catheter second capsule 3. A catheter first capsule inflation and deflation connecting tube sealing valve 6 is provided at the end of the catheter first capsule inflation and deflation connecting tube 5, and a catheter second capsule inflation and deflation connecting tube sealing valve 12 is provided at the end of the catheter second capsule inflation and deflation connecting tube 18; the catheter first capsule 2 can be inflated and deflated through the catheter first capsule inflation and deflation connecting tube 5 and the catheter first capsule inflation and deflation connecting tube sealing valve 6, and the catheter second capsule 3 can be inflated and deflated through the catheter second capsule inflation and deflation connecting tube 18 and the catheter second capsule inflation and deflation connecting tube sealing valve 12.

[0103] In the embodiment of the present invention, the catheter first capsule 2 can be inflated and deflated through the catheter first capsule inflation and deflation connecting tube 5 and the catheter first capsule inflation and deflation connecting tube sealing valve 6, and the catheter second capsule 3 can be inflated and deflated through the catheter second capsule inflation and deflation connecting tube 18 and the catheter second capsule inflation and deflation connecting tube sealing valve 12. The inflation and deflation processes of the catheter first capsule 2 and the catheter second capsule 3 are independent of each other. The specific processes of inflating and deflating the catheter first capsule 2 and the catheter second capsule 3 are the same as those in the prior art and will not be elaborated here.

[0104] As Figure 23 shown, the catheter body includes a tube main body portion 60 and an arc-shaped head portion 61 connected to the tube main body portion 60. The arc-shaped head portion 61 is in communication with the tube main body portion 60, and the joint portion of the arc-shaped head portion 61 and the tube main body portion 60 is located above the catheter first capsule 2. The included angle α between the axis of the tube main body portion 60 and the axis of the arc-shaped head portion 61 is 15° to 45°; the catheter side hollow area and the arc-shaped opening bottom of the arc-shaped head portion 61 are respectively located on opposite sides of the catheter body 1.

[0105] In an embodiment of the present invention, the tube main body 60 generally includes the tail part and the middle region of the catheter body 1. The arc-shaped head 61 is generally the head of the catheter body 1. The tube main body 60 is generally straight or generally straight as a whole. The arc-shaped head 61 is arc-shaped. The length of the arc-shaped head 61 is much smaller than that of the tube main body 60. The arc-shaped head 61 communicates with the tube main body 60. The catheter body end hole 58 is located at the end of the arc-shaped head 61. Specifically, the joint of the arc-shaped head 61 and the tube main body 60 is located above the first catheter balloon 2 and generally does not exceed the second catheter balloon 3. Due to the shape relationship between the tube main body 60 and the arc-shaped head 61, there is an included angle α between the axis of the tube main body 60 and the axis of the arc-shaped head 61, and the size of the axis included angle α is 15° to 45°.

[0106] During specific implementation, by using the included angle α between the arc-shaped head 61 and the tube main body 60, the arc-shaped head 61 has its own direction, which can play a guiding role during intubation and improve the convenience and reliability of inserting the catheter body 1 into the non-operative side lung. When inserting the catheter body 1 from the main airway into the corresponding bronchus, by using the self-shaping effect of the arc-shaped head 61, rotate the tail part of the catheter body 1 to drive the arc-shaped head 61 to rotate, so that the arc-shaped head 61 faces the direction of the target bronchial orifice, which is convenient for the arc-shaped head 61 to enter the target bronchus. After the arc-shaped head 61 enters the corresponding bronchus, the intubation process of the required catheter body 1 can be realized.

[0107] During specific implementation, the arc-shaped head 61 has an arc-shaped opening. The side of the arc-shaped head 61 corresponding to the bottom of the arc-shaped opening corresponds to the side of the catheter body 1 where the catheter side hollow area is located, that is, the arc-shaped opening of the arc-shaped head 61 and the catheter side hollow area are located on the opposite sides of the catheter body 1.

[0108] As Figure 4 、 Figure 5 and Figure 8 shown, a side ventilation hole 23 is also provided at the head on one side of the catheter body 1. The side ventilation hole 23 penetrates the side wall on the side where the catheter body 1 is located. The side ventilation hole 23 and the catheter side hollow area are located on both sides of the catheter body 1. The outer circle of the side ventilation hole 23 is surrounded by the first catheter balloon 2. The first catheter balloon 2 wraps the corresponding outer wall except the side ventilation hole 23 at the head of the catheter body 1. The gas in the catheter body 1 can be discharged through the side ventilation hole 23 and the catheter body end hole 58.

[0109] In the embodiments of the present invention, the side ventilation holes 23 penetrate through the side wall where the catheter body 1 is located. The side ventilation holes 23 and the side hollowed-out area of the catheter are located on both sides of the catheter body 1, that is, the side ventilation holes 23 and the arc-shaped opening of the arc-shaped head 61 are located on the same side of the catheter body 1. The side ventilation holes 23 are communicated with the inner cavity of the catheter body 1. The aperture of the side ventilation holes 23 is generally smaller than the width of the first catheter bladder 2, that is, the side ventilation holes 23 are located between the upper edge and the lower edge of the first catheter bladder 2, so that the function of the first catheter bladder 2 is maintained without affecting the gas discharge through the side ventilation holes 23. Generally, the side ventilation holes 23 are larger than the aperture of the catheter side ventilation holes 4, that is, the ventilation capacity through the side ventilation holes 23 is greater than the ventilation capacity of the catheter side hollowed-out area.

[0110] The opening of the secondary bronchus in the upper right lung of the human body is relatively high and extremely close to the carina position. During left lung surgery, right-sided single-lung ventilation needs to be implemented. When the catheter body 1 is inserted into the right bronchus, the arc-shaped head 66 is extremely likely to block the opening of the secondary bronchus in the upper right lung, which is extremely unfavorable for the ventilation and oxygen supply of the right lung. In order to reduce this adverse effect on the ventilation of the upper lobe bronchus of the right lung, the side ventilation holes 23 can be used to support the ventilation of the upper lobe bronchus of the right lung. Specifically, when the side ventilation holes 23 are provided on the catheter body 1 and the right lung is ventilated through the catheter body 1, the side ventilation holes 23 can correspond to the upper lobe bronchus of the right lung, so that the side ventilation holes 23 can support the ventilation of the upper lobe bronchus of the right lung and improve the reliability of right lung ventilation. When ventilating the left lung, the side ventilation holes 23 correspond to the side wall of the bronchus of the left lung, which can make the side ventilation holes 23 in a blind hole state, or the side ventilation holes 23 and the end hole 58 of the catheter body are used together to support the respiration of the left lung.

[0111] Furthermore, the end hole 58 of the catheter body is provided with an inclined wedge-shaped opening or a flat opening at the head end of the catheter body 1;

[0112] When the end hole 58 of the catheter body is an inclined wedge-shaped opening at the head end of the catheter body 1, the slope surface formed by the inclined wedge-shaped opening and the side hollowed-out area of the catheter on the catheter body 1 are located on the opposite sides of the catheter body 1 corresponding to each other;

[0113] When the end hole 58 of the catheter body is a flat opening at the head end of the catheter body 1, a head end exhaust hole is provided at the head end of the catheter body 1. The head end exhaust hole penetrates through the tube wall of the catheter body 1. The head end exhaust hole is located between the lower edge of the first catheter bladder 2 and the end hole 58 of the catheter body. The head end exhaust hole and the side hollowed-out area of the catheter are located on the opposite sides of the catheter body 1 corresponding to each other.

[0114] In an embodiment of the present invention, when the end hole 58 of the catheter body is in an inclined wedge shape at the head end of the catheter body 1, it is consistent with the situation of the head end of the existing catheter body 1. The inclined wedge-shaped end hole 58 of the catheter body can form a slope surface at the head end of the catheter body 1, and the front surface of the slope surface and the side vent hole 23 are on the same side of the catheter body 1. Along the direction from the tail end of the catheter body 1 to the head end of the catheter body 1, the height of the slope surface gradually decreases. The front surface of the slope surface is formed by the section of the arc opening of the arc-shaped head 61.

[0115] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 5 , Figure 7 and Figure 8 shown, it shows that the end hole 58 of the catheter body is in a flat mouth shape at the head end of the catheter body 1, that is, the end of the head end of the catheter body 1 is a flat end face. Compared with the inclined wedge shape of the end hole 58 of the catheter body at the head end of the catheter body 1, when the end hole 58 of the catheter body is in a flat mouth shape at the head end of the catheter body 1, the length of the catheter body 1 can be effectively reduced, and the convenience of operations such as intubation can be further improved. In order to prevent the end 54 of the catheter body from being blocked and affecting the respiratory support of the catheter body 1, a head end exhaust hole is provided on the catheter body 1. The head end exhaust hole penetrates the catheter body 1. Generally, the head end exhaust hole can be on the same side as the side vent part of the catheter. The head end exhaust hole is located between the lower edge of the catheter balloon 2 and the end hole 58 of the catheter body. Specifically in implementation, the number of the head end exhaust holes 54 provided at the head end of the catheter body 1 can be selected according to needs. When the end hole 58 of the catheter body is blocked, the head end exhaust hole can ensure the discharge of the gas in the catheter body 1, and further improve the reliability in respiratory support. In addition, when using the catheter body 1 to ventilate the right lung, the head end exhaust hole can also correspond to the upper lobe bronchus of the right lung, and the head end exhaust hole can be used to ventilate the upper lobe bronchus of the right lung, improving the reliability during right lung ventilation.

[0116] As Figure 17 and Figure 18 shown, the catheter respiratory connection head includes a joint catheter connecting tube 22 that can be adaptively connected to the tail end of the catheter body 1 and a joint connecting sleeve 7 for adaptively connecting to a ventilator / anesthesia machine. The tail end of the catheter body 1 can be sleeved on the joint catheter connecting tube 22, the joint connecting sleeve 7 can be sleeved on the joint catheter connecting tube 22, the joint connecting sleeve 7 can be communicated with the catheter body 1 through the joint catheter connecting tube 22, and the joint connecting sleeve 7 can rotate relative to the joint catheter connecting tube 22 and the catheter body 1.

[0117] In the embodiment of the present invention, the tail end of the catheter body 1 can be sleeved on the connecting pipe 22 of the joint catheter, and after the catheter body 1 is sleeved on the connecting pipe 22 of the joint catheter, the sealing performance of the joint between the catheter body 1 and the connecting pipe 22 of the joint catheter can be ensured, that is, it can be ensured that gas will not escape through the joint between the catheter body 1 and the connecting pipe 22 of the joint catheter. The joint connecting sleeve 7 can be adaptively connected to the ventilator / anesthesia machine, that is, the size, shape, etc. of the joint connecting sleeve 7 can be adapted to the ventilator / anesthesia machine, so that the joint connecting sleeve 7 can be connected and cooperated with the ventilator / anesthesia machine. The joint connecting sleeve 7 can be communicated with the catheter body 1 through the connecting pipe 22 of the joint catheter, so that the ventilator / anesthesia machine can send gas into the catheter body 1. During specific implementation, the joint connecting sleeve 7 can rotate relative to the connecting pipe 22 of the joint catheter. After the connecting pipe 22 of the joint catheter is connected to the catheter body 1 and remains stable, at this time, the joint connecting sleeve 7 can also rotate relative to the catheter body 1.

[0118] After the catheter body 1 is connected to the ventilator / anesthesia machine through the joint connecting sleeve 7, due to the twisted relationship between the patient receiving respiratory support and the ventilator / anesthesia machine and other positions, it is easy to cause the catheter body 1 to be twisted, generating shear force, resulting in the bending or displacement of the catheter body 1 or the threaded pipe that is matched and connected to the catheter body 1, and even the catheter body 1 may be disengaged and the respiratory pipeline may be disconnected, resulting in unpredictable complications. In the embodiment of the present invention, after the catheter body 1 is connected to the ventilator / anesthesia machine through the joint connecting sleeve 7, if the catheter body 1 is twisted, the twist on the catheter body 1 can be eliminated by the relative rotation between the catheter body 1 and the joint connecting sleeve 7, and the normal respiratory support state through the catheter body 1 will not be affected during the process of eliminating the twisted state of the catheter body 1.

[0119] Further, a convex ring 53 of the joint catheter connecting pipe is provided on the connecting pipe 22 of the joint catheter, and a groove 51 of the joint connecting sleeve for allowing the connecting pipe 22 of the joint catheter to be embedded is provided in the pipe wall of the joint connecting sleeve 7;

[0120] When the joint connecting sleeve 7 is sleeved on the connecting pipe 22 of the joint catheter, the connecting pipe 22 of the joint catheter is embedded in the groove 51 of the joint connecting sleeve, and the convex ring 53 of the joint catheter connecting pipe can be embedded in the positioning groove 52 in the joint connecting sleeve 7. By using the cooperation between the convex ring 53 of the joint catheter connecting pipe and the positioning groove 52 of the joint connecting sleeve, the joint connecting sleeve 7 can rotate on the connecting pipe 22 of the joint catheter.

[0121] In the embodiment of the present invention, the joint-conduit connecting tube convex ring 53 is convexly arranged on the joint-conduit connecting tube 22, and the joint-conduit connecting tube convex ring 53 is distributed along the circumferential surface of the joint-conduit connecting tube 22. A joint-connecting sleeve groove 51 is arranged in the tube wall of the joint-connecting sleeve 7, and the length of the joint-connecting sleeve groove 51 is less than the length of the joint-connecting sleeve 7. The joint-conduit connecting tube 22 can extend into the joint-connecting sleeve groove 51. The joint-connecting sleeve groove 51 is in the shape of an annular groove in the joint-connecting sleeve 7. A joint-connecting sleeve positioning groove 52 is arranged on the inner wall of the joint-connecting sleeve groove 51, and the joint-connecting sleeve positioning groove 52 can allow the joint-conduit connecting tube convex ring 53 to be embedded. When the joint-conduit connecting tube convex ring 53 is embedded in the joint-connecting sleeve positioning groove 52, the joint-connecting sleeve 7 can rotate on the joint-conduit connecting tube 22, that is, the relative rotation between the joint-connecting sleeve 7 and the joint-conduit connecting tube 22 is realized. Generally, the joint-conduit connecting tube convex ring 53 is clearance-fitted between the joint-connecting sleeve positioning groove 52 , that is, the rotation of the joint-connecting sleeve 7 relative to the joint-conduit connecting tube 22 is not affected.

[0122] In specific implementation, a joint connection sleeve wall groove 50 is provided on the joint connection sleeve 7, and the joint connection sleeve wall groove 50 passes through the joint connection sleeve 7. Generally, the joint connection sleeve wall groove 50 corresponds to the joint connection sleeve positioning groove 52. The joint connection sleeve positioning groove 52 is annular, and the joint connection sleeve wall groove 50 is in one or more discontinuous forms. In addition, through the cooperation of the contact surface between the joint connection sleeve 7 and the joint conduit connecting tube 22, the gas in the joint connection sleeve 7 will not pass through the joint connection sleeve groove 51, and will not escape through the joint connection sleeve groove 51 and the joint connection sleeve wall groove 50. Of course, a sealing ring can also be provided at the joint of the joint connection sleeve 7 and the joint conduit connecting tube 22 to further ensure the airtightness during use; and after the sealing ring is provided, it should be based on not affecting the rotation of the joint connection sleeve 7 on the joint conduit connecting tube 22. A joint-catheter connecting tube end plate 59 is also provided on the opposite side of the joint-catheter connecting tube 22, and the entire catheter breathing connector can be conveniently held by the joint-catheter connecting tube end plate 59.

[0123] Furthermore, a bite pad mechanism for spreading the upper incisors and the lower incisors is provided on the catheter body 1, and the bite pad mechanism can be locked on the catheter body 1. When the locking state between the bite pad mechanism and the catheter body 1 is released, the bite pad mechanism can move relative to the catheter body 1 on the catheter body 1.

[0124] In the embodiment of the present invention, the dental pad mechanism is arranged on the catheter body 1. During use, the dental pad mechanism is fixed between the upper incisors and the lower incisors of the patient. Through the dental pad mechanism, the upper incisors and the lower incisors can be separated, and the upper incisors and the lower incisors of the patient can be supported on the dental pad mechanism, ensuring the smoothness of the inner cavity of the catheter body 1. The dental pad mechanism can be locked on the catheter body 1. When locked on the catheter body 1, it can facilitate the stability of the oral cavity separation. When it is necessary to adjust the position of the catheter body 1, the dental pad mechanism fixed between the upper incisors and the lower incisors of the patient does not need to be detached and refixed. Only the locking state between the dental pad mechanism and the catheter body 1 needs to be released. After releasing the locking state with the catheter body 1, the dental pad mechanism and the catheter body 1 can move relative to each other. The relative movement specifically includes the rotation of the catheter body 1 relative to the dental pad mechanism, or when the dental pad mechanism is sleeved on the catheter body 1, the catheter body 1 can be pulled / pushed to move. Compared with the connection and cooperation between the existing dental pad and the catheter body 1, it can improve the convenience during the adjustment of the catheter body 1. During the operation, the dental pad mechanism can also be used to keep the oral cavity separated, facilitating the insertion of the secretion cleaning tube through the mouth to clean the secretions in the patient's oral cavity.

[0125] Specifically, when the operation is over and it is necessary to retract the catheter body end hole 58 of the catheter body 1 into the main airway to perform two-lung ventilation respiratory support using the catheter body 1. Specifically, keep the dental pad mechanism stationary between the upper incisors and the lower incisors of the patient, release the locking state between the dental pad mechanism and the catheter body 1 so that the catheter body 1 can move relative to the dental pad mechanism, and extract the gas in the catheter sealing balloon 2. Pull the catheter body 1 back 3 cm - 5 cm in the airway and make the catheter body end hole 58 retract into the main trachea. During the process of pulling the catheter body 1, the patient's teeth can always bite on the dental pad mechanism. After the catheter body end hole 20 of the catheter body 1 is located in the main trachea, lock the dental pad mechanism on the catheter body 1 again, and then inflate the catheter sealing balloon 2. At this time, the required two-lung ventilation can be performed using the catheter body 1. The specific process of two-lung ventilation is the same as the existing one and will not be elaborated here. During the two-lung ventilation process, the wall of the main trachea can cooperate with the side hollow area of the catheter, making the side hollow area of the catheter in the shape of a blind hole, which will not affect the two-lung ventilation, that is, the principle and function are the same as those of the existing two-lung ventilation using the single-lumen catheter body 1.

[0126] In addition, when the patient changes body position or when it is necessary to switch between the operative side lung and the non-operative side lung, that is, the catheter body 1 needs to be inserted into different side lungs. Specifically, keeping the mouthguard mechanism in the position between the upper incisors and lower incisors of the patient unchanged, first release the locking state between the mouthguard mechanism and the catheter body 1 so that the catheter body 1 can move relative to the mouthguard mechanism, and extract the gas in the catheter sealing capsule 2. Pull the catheter body 1 so that the catheter body end hole 58 of the catheter body 1 retreats from the current bronchus into the main trachea, reposition, rotate the catheter body 1 and insert the catheter body end hole 58 of the catheter body 1 into the bronchus of the other side lung. The catheter body 1 can insert the catheter body end hole 58 into the required bronchial opening by using conventional technical means, or the arc-shaped head 61 of the catheter body 1 can conveniently enter the required bronchial opening. When the catheter body 1 is inserted in place, lock the mouthguard mechanism and the catheter body 1 again, and then inflate the catheter seal 2. At this time, single-lung ventilation as required can be performed using the catheter body 1. At the same time, during the process of performing single-lung ventilation using the catheter body 1, the hollowed-out area on the side of the catheter of the catheter body 1 needs to correspond to the bronchial opening of the operative side lung so as to manage the operative side lung as required using the hollowed-out area on the side of the catheter and the operative lung operation tube 13. During the process of pulling the catheter body 1 and rotating the catheter body 1, the patient's teeth can always bite on the mouthguard mechanism, which can greatly improve the convenience of adjusting the position state of the catheter body 1 compared with the existing connection and cooperation between the mouthguard and the catheter body 1.

[0127] As Figure 19 , Figure 20 , Figure 21 and Figure 22 shown, the mouthguard mechanism includes a mouthguard locking connection sleeve 24 that can be sleeved on the catheter body 1 and a locking adjustment connecting pipe 19 that can be sleeved on the catheter body 1 and can be adaptively connected to the mouthguard locking connection sleeve 24. A mouthguard sleeve 8 for tooth occlusion is sleeved on the locking adjustment connecting pipe 19;

[0128] An adjustment connecting pipe internal thread 54 is provided on the inner wall of the locking adjustment connecting pipe 19, and the wall thickness of the locking adjustment connecting pipe 19 gradually changes; a locking sleeve external thread 57 that can be adapted to the adjustment connecting pipe internal thread 54 is provided on the outer wall of the mouthguard locking connection sleeve 24. The head end of the mouthguard locking connection sleeve 24 can extend into the locking adjustment connecting pipe 19 and be firmly connected to the locking adjustment connecting pipe 19. The tail end of the mouthguard locking connection sleeve 24 is divided into several connection locking pieces 56;

[0129] When the relative movement between the locking adjustment connecting pipe 19 and the mouthguard locking connection sleeve 24 causes the connection locking piece 56 to contract towards the catheter body 1, the mouthguard locking connection sleeve 24 and the catheter body 1 can be locked to each other; when the relative movement between the locking adjustment connecting pipe 19 and the mouthguard locking connection sleeve 24 causes the connection locking piece 56 to open away from the catheter body 1, the locking state between the mouthguard locking connection sleeve 24 and the catheter body 1 can be released.

[0130] In the embodiment of the present invention, both the locking and adjusting connecting pipe 19 and the mouthguard locking connecting sleeve 24 can be sleeved on the catheter body 1. The mouthguard sleeve 8 is sleeved on the locking and adjusting connecting pipe 19. After the mouthguard sleeve 8 is sleeved on the locking and adjusting connecting pipe 19, the mouthguard sleeve 8 can be stable with the locking and adjusting connecting pipe 19, that is, the stability of opening the oral cavity can be achieved.

[0131] The inner wall of the locking and adjusting connecting pipe 19 is provided with an adjusting connecting pipe internal thread 54, and the wall thickness of the locking and adjusting connecting pipe 19 is in a gradually changing state, such as Figure 22 shown. Figure 22 In, along the direction from top to bottom, the wall of the locking and adjusting connecting pipe 19 gradually becomes thinner, and the adjusting connecting pipe internal thread 54 also follows the wall of the locking and adjusting connecting pipe 19. The outer wall of the mouthguard locking connecting sleeve 24 is provided with a locking sleeve external thread 57. The mouthguard locking connecting sleeve 24 can be connected and matched with the adjusting connecting pipe internal thread 54 of the locking and adjusting connecting pipe 19 through the locking sleeve external thread 57. The tail end of the mouthguard locking connecting sleeve 24 can form a plurality of connecting locking pieces 56 through a plurality of locking piece dividing grooves 55, and each connecting locking piece 56 also has a locking sleeve external thread 57.

[0132] It can be seen from the above description that by utilizing the change of the inner wall thickness of the locking and adjusting connecting pipe 19 in cooperation with the mouthguard locking connecting sleeve 24 and the connecting locking pieces 56, through the relative movement of the locking and adjusting connecting pipe 19 and the mouthguard locking connecting sleeve 24, the connecting locking pieces 56 of the mouthguard locking connecting sleeve 24 can be contracted and pressed tightly on the catheter body 1, so that the mutual locking of the mouthguard locking connecting sleeve 24 and the catheter body 1 can be achieved, that is, the mutual locking of the mouthguard mechanism and the catheter body 1 can be achieved. When the locking and adjusting connecting pipe 19 is rotated and the pressing of the connecting locking pieces 56 on the catheter body 1 is released, the locking state of the mouthguard locking connecting sleeve 24 and the catheter body 1 can be released, that is, the locking state of the mouthguard mechanism and the catheter body 1 can be released. Generally, when the position with a larger wall thickness of the locking and adjusting connecting pipe 19 is firmly connected to the connecting locking pieces 56, the connecting locking pieces 56 can be pressed tightly on the catheter body 1.

[0133] Furthermore, a mouthguard groove 9 allowing teeth to be embedded is provided on the mouthguard sleeve 8, and the mouthguard grooves 9 are symmetrically distributed on the mouthguard sleeve 8; at least one sleeve body groove 11 adapted to the secretion cleaning pipe is also provided on the mouthguard sleeve 8. The sleeve body groove 11 is located between two mouthguard grooves 9 on the mouthguard sleeve 8, and the secretion cleaning pipe can be placed in the oral cavity through the sleeve body groove 11.

[0134] In an embodiment of the present invention, the mouthguard sleeve 8 is generally made of medical silica gel. The mouthguard groove 9 is recessed in the mouthguard sleeve 8. The mouthguard groove 9 is elliptical, and the length direction of the mouthguard groove 9 corresponds to the length direction of the teeth. Generally, two symmetrically distributed sleeve grooves 11 are provided on the mouthguard groove 8. Each sleeve groove 11 is formed by providing two mouthguard sleeve bumps 10 on the mouthguard sleeve 8. Through the sleeve groove 11, space can be provided for a secretion cleaning tube or the like. Thus, the secretion cleaning tube is placed in the oral cavity through the sleeve groove 11, improving the stability and reliability during the cleaning of the secretion by the secretion cleaning tube.

[0135] Furthermore, it further includes a video image acquisition mechanism capable of acquiring the position state of the catheter body 1 during use. The video image acquisition mechanism is adaptively connected to the catheter body 1, and a marked color is applied to the catheter first bladder 2 and the catheter second bladder 3.

[0136] In an embodiment of the present invention, the position state of the catheter body 1 can be acquired through the video image acquisition mechanism. For example, when acquiring the position state information of the catheter body 1 during intubation and during use, the accuracy and efficiency of the intubation process are improved, etc. When the position state during use can also be acquired through video image information, effective monitoring of the entire breathing process is achieved. Specifically, during implementation, the catheter body 1 is generally transparent, and a marked color is applied to the catheter first bladder 2 and the catheter second bladder 3, avoiding the situation where the position state of the catheter first bladder 2 and the catheter second bladder 3 cannot be effectively observed when the existing catheter first bladder 2 and the guide rod second bladder 3 also adopt a transparent color.

[0137] Such as Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown in the figures, the video head acquisition mechanism includes a sampling connecting rod 28 that can be embedded in the catheter body 1 and a connecting rod video head 25 located at the head end of the sampling connecting rod 28. The length of the sampling connecting rod 28 is greater than the length of the catheter body 1; through the sampling connecting rod 28, the connecting rod video head 25 can penetrate out of the end hole 58 of the catheter body, or through the sampling connecting rod 28, the connecting rod video head 25 can be withdrawn from the catheter body 1; the connecting rod video head 25 is electrically connected to the connecting rod video output connector 27 through a connecting rod video line 26 buried in the sampling connecting rod 28.

[0138] In an embodiment of the present invention, the connecting rod video head 25 is located at the end of the sampling connecting rod 28. The connecting rod video head 25 can adopt the form of video image sampling such as a commonly used camera in the prior art, and the specific form can be selected according to needs, which will not be elaborated here. Generally, the length of the sampling connecting rod 28 is greater than the length of the catheter body 1, so that the connecting rod video head 25 can penetrate out from the head end of the catheter body 1. The outer diameter of the sampling connecting rod 28 is generally smaller than the inner diameter of the catheter body 1. The position of the connecting rod video head 25 can be adjusted through the sampling connecting rod 28, such as penetrating the connecting rod video head 25 out from the end hole 58 of the catheter body, or withdrawing the connecting rod video head 25 from the catheter body 1.

[0139] The main body of the connecting rod video line 26 is buried in the sampling connecting rod 28, and the connecting rod video output connecting head 27 is located outside the sampling connecting rod 28, that is, there is a part of the connecting rod video line 26 located outside the sampling connecting rod 28. The connecting rod video output connecting head 27 can be electrically connected to a video display device, such as a display screen, etc. The specific form of the connecting rod video output connecting head 27 is related to the type of the video display device. For example, it can be a USB connector or other common connector types capable of video and image transmission, and the specific form can be selected according to needs, which will not be elaborated here.

[0140] Further, a video catheter connecting head is provided at the end of the sampling connecting rod 28. The catheter breathing connecting head is detachably connected to the catheter body 1. When the catheter breathing connecting head is detached from the catheter body 1, the video catheter connecting head is adaptively connected to the tail end of the catheter body 1, and the video catheter connecting head is detachably connected to the tail end of the catheter body 1;

[0141] After the video catheter connecting head is adaptively connected to the catheter body 1, the sampling connecting rod 28 can be inserted into the catheter body 1; the video catheter connecting head is communicated with the catheter body 1, and the catheter body 1 can be adaptively connected to a ventilator / anesthesia machine through the video catheter connecting head;

[0142] The sampling connecting rod 28 includes a plurality of uniformly distributed connecting rod pieces 35. Gas flow grooves allowing gas to pass through can be formed between adjacent connecting rod pieces 35; gas enters the catheter body 1 through the video catheter connecting head, and the gas in the catheter body 1 flows under the guidance of the gas flow grooves and can be discharged through the catheter side ventilation part and the catheter body end hole 58.

[0143] In the embodiments of the present invention, when a video catheter connector is provided at the end of the sampling link 28, a detachable connection needs to be adopted between the catheter breathing connector and the catheter body 1. That is, when the sampling link 28 is placed inside the catheter body 1, the catheter connector needs to be separated from the catheter body 1 so that the sampling link 28 can be adaptively connected to the tail end of the catheter body 1 through the video catheter connector. The video catheter connector and the link video head 25 are respectively located at both ends of the catheter body 1. Of course, after the video catheter connector is connected to the catheter body 1, the video catheter connector and the catheter body 1 can also be disassembled and separated so that the catheter breathing connector can be connected and matched with the tail end of the catheter body 1 again to realize the connection between the catheter body 1 and the ventilator / anesthesia machine after the catheter body 1 is inserted in place.

[0144] As can be seen from the above description, when the sampling link 28 cooperates with the catheter body 1, the sampling link 28 needs to be inserted into the catheter body 1. In order to achieve the effect of ventilation during the intubation process, the video catheter connector can be communicated with the catheter body 1, and the catheter body 1 can be adaptively connected to the ventilator / anesthesia machine through the video catheter connector.

[0145] During specific implementation, the sampling link 28 has a plurality of link pieces 35 evenly distributed. The space between adjacent link pieces 35 can form a gas flow groove. When the sampling link 28 is inserted into the catheter body 1, a gas flow channel is formed between the gas flow groove and the inner wall of the catheter body 1. Thus, the gas sent into the catheter body 1 by the ventilator / anesthesia machine through the video catheter connector can flow through the catheter body 1 through the gas flow channel and be discharged through the catheter side ventilation part and the catheter body end hole 58, that is, the respiratory support during the intubation process of the catheter body 1 is realized. During the intubation process, the position state during the intubation process can be observed in real time by using the link video head 25. A rod body hole 36 is provided in the sampling link 28, and the link video line 26 can be buried in the sampling link 28 through the rod body hole 36 and connected and matched with the link video head 25.

[0146] As Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 shown, the video catheter connector includes a video connection pipe 31 adapted to the catheter body 1, an adjustment transition pipe 30 adapted to the video connection pipe 31, and a video ventilation pipe 29 adapted to the adjustment transition pipe 30;

[0147] The tail end of the catheter body 1 can be sleeved on the video connection tube 31. The inner wall of the adjustment transition tube 30 is provided with an adjustment transition internal thread 40, and can be adaptively connected to a ventilator / anesthesia machine through the video ventilation tube 29. The video ventilation tube 29 can communicate with the video connection tube 31 through the adjustment transition tube 30. The adjustment transition tube 30 can rotate relative to the video connection tube 31, and the video ventilation tube 29 can rotate relative to the adjustment transition tube 30.

[0148] An external thread 37 of the connecting rod that can be adapted to the adjustment transition internal thread 40 is provided on the outer wall of the sampling connecting rod 28. The sampling connecting rod 28 passes through the video ventilation tube 29, the adjustment transition tube 30, and the video connection tube 31 in sequence and then enters the catheter body 1. By matching the external thread 37 of the connecting rod with the adjustment transition internal thread 40, the position state of the sampling connecting rod 28 in the catheter body 1 can be adjusted.

[0149] In the embodiment of the present invention, the video connection tube 31 can be connected to the tail end of the catheter body 1, and the tail end of the catheter body 1 can be sleeved on the video connection tube 31. From the above description, it can be seen that after the catheter body 1 is sleeved on the video connection tube 31, the catheter body 1 and the video connection tube 31 can be detachably separated, so as to facilitate the subsequent reconnection and cooperation between the catheter body 1 and the catheter respiratory connector.

[0150] The inner wall of the adjustment transition tube 30 has an adjustment transition internal thread 40, and can be adaptively connected to a ventilator / anesthesia machine through the video ventilation tube 29, that is, the size, shape, etc. of the video ventilation tube 29 can be adapted to the ventilator / anesthesia machine to meet the need for connection with the ventilator / anesthesia machine. The video ventilation tube 29 can communicate with the video connection tube 31 through the adjustment transition tube 30. Thus, when the video connection tube 31 is connected to the catheter body 1, the video ventilation tube 29 can communicate with the catheter body 1. After the video ventilation tube 29 is adaptively connected to the ventilator / anesthesia machine, the ventilator / anesthesia machine can deliver the required gas into the catheter body 1 through the video ventilation tube 29, the adjustment transition tube 30, and the video connection tube 31. Specifically, during implementation, the adjustment transition tube 30 can rotate relative to the video connection tube 31, and the video ventilation tube 29 can also rotate relative to the adjustment transition tube 30.

[0151] An external thread 37 of the connecting rod is provided on the outer wall of the sampling connecting rod 28, and the external thread 37 of the connecting rod can be adapted to the adjustment transition internal thread 40. Specifically, during implementation, the external thread 37 of the connecting rod can be provided in the area at the tail of the sampling connecting rod 28. By matching the external thread 37 of the connecting rod with the adjustment transition internal thread 40, fine adjustment of the position of the sampling connecting rod 28 can be achieved. Since the adjustment transition tube 30 can rotate relative to the video connection tube 31, by driving the rotation of the adjustment transition tube 30 relative to the video connection tube 31, fine adjustment of the position of the sampling connecting rod 28 in the catheter body 1 can be achieved.

[0152] During specific implementation, a video ventilation line body side tube 34 is further provided on the video ventilation connecting tube 29. The video ventilation line body side tube 34 is communicated with the video ventilation connecting tube 29. The video ventilation line body side tube 34 is located on one side of the video ventilation connecting tube 29, and the length direction of the video ventilation line body side tube 34 is perpendicular to that of the video ventilation connecting tube 29. A side tube positioning seal body 39 is arranged in the video ventilation line body side tube 34. The connecting rod video output connector 27 is located outside the video ventilation connecting tube 29, that is, the connecting rod video line 26 passes through the video ventilation line body side tube 34, and the side tube positioning seal body 39 is used to seal the connecting rod video line 26 and the video ventilation line body side tube 34.

[0153] In order to enable the video ventilation connecting tube 29 to rotate relative to the adjustment transition tube 30, the video ventilation connecting tube 29 is connected and cooperated with the adjustment transition tube 30 through a rotation connection of the first ring body 32; similarly, the adjustment transition tube 30 is connected and cooperated with the video connection connecting tube 31 through a rotation connection of the second ring body 33. Specifically, the rotation connection of the first ring body 32 and the rotation connection of the second ring body 33 adopt the same structural form. An air vent connecting tube inner cavity 38 is arranged in the video ventilation connecting tube 29. A video ventilation connecting tube ring groove is arranged on the air vent connecting tube lower body part 31 at the lower part of the video ventilation connecting tube 29, and the outer diameter of the air vent connecting tube lower body 41 is smaller than the outer diameter of the upper part of the video ventilation connecting tube 29. A rotation connection first groove 42 is arranged at the upper part of the adjustment transition tube 30. The lower part of the video ventilation connecting tube 29 can be embedded in the adjustment transition tube 30, and after the video ventilation connecting tube 29 is embedded in the adjustment transition tube 30, the video ventilation connecting tube ring groove can be exactly corresponding to the rotation connection first groove 42.

[0154] The specific structures of the rotation connection first ring body 32 and the rotation connection second ring body 33 are as Figure 12 shown. Specifically, it includes an annular body 47. The annular body 47 is arc-shaped. Annular body end grooves 48 are provided at both ends of the annular body 47. The annular body end grooves 48 are located outside the annular body 47. Annular body steps 49 are provided on the inner sides of both ends of the annular body 47. The annular body 47 can be embedded in the rotation connection first groove 42 and at the same time be embedded in the adapted air vent connecting tube ring groove. The rotation connection first groove 42 is arc-shaped, and the arc length of the rotation connection first groove 42 is slightly larger than the arc length of the annular body 47. Thus, the annular body 47 can be connected to both ends of the rotation first groove 32 by using the annular body end grooves 48, and the annular body 47 can be prevented from separating from the rotation connection first groove 42. The annular body 47 can be embedded in the adapted air vent connecting tube ring groove by using the annular body steps 49, so that the video ventilation connecting tube 38 and the adjustment transition tube 30 can rotate around the annular body 47, realizing the relative rotation between the video ventilation connecting tube 38 and the adjustment transition tube 30.

[0155] A second rotation connection groove 43 is provided at the lower part of the adjustment transition pipe 30. The second rotation connection groove 43 penetrates through the pipe wall of the adjustment transition pipe 30. Of course, the first rotation connection groove 42 also penetrates through the corresponding pipe wall of the adjustment transition pipe 30. The end of the video connection pipe 31 can extend into the adjustment transition pipe 30. A video connection pipe rotation positioning groove 36 is provided on the video connection pipe 31, and the video connection pipe rotation positioning groove 36 is in the shape of an annular groove. When the video connection pipe 31 is embedded in the adjustment transition pipe 30, the video connection pipe rotation positioning groove 36 can be exactly corresponding to the second rotation connection groove 43, so that the second rotation connection ring body 33 can cooperate with the second rotation connection groove 43 and the video connection pipe rotation positioning groove 36, so that the adjustment transition pipe 30 and the video connection pipe 31 can rotate around the second rotation connection ring body 33, realizing the relative rotation between the adjustment transition pipe 30 and the video connection pipe 31. The specific connection and cooperation process with the second rotation connection ring body 33 can refer to the above description and will not be elaborated here.

[0156] During specific implementation, a video connection pipe inner limiting block 46 is arranged in the video connection pipe 31, and the sampling connecting rod 28 can be limited by the video connection pipe inner limiting block 46. A video connection pipe end plate 44 is also arranged on the video connection pipe 31. The video connection pipe end plates 44 are symmetrically distributed on the outer wall of the video connection pipe 31. Through the video connection pipe end plates 44, the connection and limitation between the catheter body 1 and the video connection pipe 31 can be realized, and it is also convenient to hold the video connection pipe 31.

[0157] In addition, a fixed camera can be buried inside the arc of the head end of the catheter body 1. The camera can be wrapped by the first catheter bladder 2, so as to avoid the pollution of the camera surface caused by blood, etc. during intubation and use, and improve the stability and reliability of the imaging process. The fixed camera can be inside the lower edge of the first catheter bladder 2, or outside the circle adjacent to the side air vent part of the catheter inside the first catheter bladder 2, as long as it can effectively realize the video acquisition and image acquisition of the required range during the intubation process of the catheter body 1 and after intubation.

[0158] Of course, during specific implementation, the video image acquisition mechanism can also adopt other structural forms, as long as it can meet the video image acquisition requirements during the intubation process of the catheter body 1 and after intubation, etc. Specifically, it can be selected and determined according to the needs of those skilled in the art and will not be elaborated here.

Claims

1. A double-capsule single-lumen tracheal catheter, comprising a catheter body and a catheter respiratory connector provided at the tail end of the catheter body. At the head end of the catheter body, there is a catheter body end hole, and the catheter body end hole communicates with the catheter respiratory connector through the catheter body; Characterized in that: A catheter first capsule and a catheter second capsule are arranged at intervals on the head of the catheter body. The catheter first capsule and the catheter second capsule are both wrapped on the catheter body. The catheter first capsule is located between the catheter second capsule and the catheter body end hole, and the catheter first capsule is adjacent to the head end of the catheter body; the catheter first capsule and the catheter second capsule are connected to a capsule inflation and deflation mechanism, and the required inflation and deflation of the catheter first capsule and / or the catheter second capsule can be performed through the capsule inflation and deflation mechanism; The capsule inflation and deflation mechanism includes a catheter first capsule inflation and deflation connecting pipe connected and communicated with the catheter first capsule and a catheter second capsule inflation and deflation connecting pipe connected and communicated with the catheter second capsule, A catheter side hollowed-out area is provided on the outer side wall of the head of the catheter body. The catheter side hollowed-out area is located between the catheter first capsule and the catheter second capsule. The catheter side hollowed-out area includes a number of catheter side holes. The catheter side holes in the catheter side hollowed-out area are isolated from the lumen in the catheter body, and the catheter side holes in the catheter side hollowed-out area are communicated with the surgical side lung operation tube; When single-lung ventilation is performed using the catheter body, the catheter first capsule and / or the catheter second capsule, the catheter side hollowed-out area is located above the lower edge of the bronchial orifice of the surgical side lung. Through the cooperation of the surgical side lung operation tube and the catheter side hollowed-out area, surgical side lung management operations can be performed on the surgical side lung. The surgical side lung management operations include exhaust deflation of the surgical side lung, ventilation inflation of the surgical side lung, and cleaning of required negative-pressure secretions; A surgical side lung operation joint is provided at the end of the surgical side lung operation tube outside the catheter body. The surgical side lung operation tube is adaptively connected to a respiratory support mechanism and / or a negative pressure suction mechanism through the surgical side lung operation joint; The catheter body includes a tube main body part and an arc-shaped head connected to the tube main body part. The arc-shaped head is communicated with the tube main body part, and the joint part of the arc-shaped head and the tube main body part is located above the catheter first capsule. The included angle α between the axis of the tube main body part and the axis of the arc-shaped head is 15° to 45°; the catheter side hollowed-out area and the arc-shaped opening bottom of the arc-shaped head are respectively located on the corresponding two sides of the catheter body; A side ventilation hole is also provided on one side of the head of the catheter body. The side ventilation hole is communicated with the lumen of the catheter body. The catheter first capsule annularly wraps the corresponding outer wall except the side ventilation hole at the head of the catheter body. The side ventilation hole is located between the upper edge and the lower edge of the catheter first capsule. The side ventilation hole and the catheter side hollowed-out area are respectively located on the corresponding two sides of the catheter body. The gas in the catheter body is discharged through the side ventilation hole.

2. The double-capsule single-lumen tracheal catheter according to claim 1, Characterized in that: At A first balloon inflation-deflation tube sealing valve is arranged at the end of the first balloon inflation-deflation tube of the catheter, and a second balloon inflation-deflation tube sealing valve is arranged at the end of the second balloon inflation-deflation tube of the catheter; the first balloon of the catheter can be inflated and deflated through the first balloon inflation-deflation tube of the catheter and the sealing valve of the first balloon inflation-deflation tube of the catheter, and the second balloon of the catheter can be inflated and deflated through the second balloon inflation-deflation tube of the catheter and the sealing valve of the second balloon inflation-deflation tube of the catheter.

3. The double-balloon single-lumen endotracheal tube according to claim 1, Its characteristics are: The surgical side lung operation joint comprises a breathing operation connection tube connected to the surgical side lung operation tube, a suction operation joint tube, and a joint sealing mechanism that can be adapted to the breathing operation connection tube and the suction operation joint tube, and can be adapted to be connected to the breathing support mechanism through the breathing operation connection tube, and can be adapted to be connected to the negative pressure suction mechanism through the suction operation joint tube; The joint sealing mechanism comprises a breathing operation connecting pipe sealing head capable of sealing the breathing operation connecting pipe and a suction operation connecting pipe sealing head capable of sealing the suction operation connecting pipe.

4. The double-balloon single-lumen endotracheal tube according to claim 1, Its characteristics are: The end hole of the catheter body is arranged at the head end of the catheter body as an oblique wedge-shaped opening or a flat opening; When the end hole of the catheter body is an oblique wedge-shaped opening at the head end of the catheter body, the slope surface formed by the oblique wedge-shaped opening and the hollow area on the catheter side of the catheter body are respectively located on two corresponding sides of the catheter body; When the end hole of the catheter body opens in a flat shape at the head end of the catheter body, a head end exhaust hole is arranged at the head end of the catheter body, and the head end exhaust hole passes through the tube wall of the catheter body. The head end exhaust hole is located between the lower edge of the first sac of the catheter and the end hole of the catheter body, and the head end exhaust hole and the hollow area on the side of the catheter are respectively located on the corresponding two sides of the catheter body.

5. The double-balloon single-lumen endotracheal tube according to claim 1, Its characteristics are: The catheter breathing connector includes a joint catheter connecting tube that can be adapted and connected to the tail end of the catheter body and a joint connecting sleeve for adapting and connecting to a ventilator / anesthesia machine. The tail end of the catheter body can be sleeved on the joint catheter connecting tube, the joint connecting sleeve can be sleeved on the joint catheter connecting tube, the joint connecting sleeve is connected to the catheter body through the joint catheter connecting tube, and the joint connecting sleeve can rotate relative to the joint catheter connecting tube and the catheter body.

6. The double-balloon single-lumen endotracheal tube according to claim 1, Its characteristics are: The catheter body is provided with a tooth pad mechanism for spreading the upper incisor and the lower incisor. The tooth pad mechanism can be locked on the catheter body. When the locking state between the tooth pad mechanism and the catheter body is released, the tooth pad mechanism can move on the catheter body relative to the catheter body.

7. The double-balloon single-lumen endotracheal tube according to claim 6, Its characteristics are: The tooth pad mechanism comprises a tooth pad locking connection sleeve that can be sleeved on the catheter body and a locking adjustment connecting tube that can be sleeved on the catheter body and can be adapted to be connected with the tooth pad locking connection sleeve, and a tooth pad sleeve for tooth occlusion is sleeved on the locking adjustment connecting tube; An adjusting connecting pipe internal thread is provided on the inner wall of the locking adjusting connecting pipe, and the wall thickness of the locking adjusting connecting pipe gradually changes; a locking sleeve external thread adapted to the adjusting connecting pipe internal thread is provided on the outer wall of the dental pad locking connecting sleeve. The head end of the dental pad locking connecting sleeve can extend into the locking adjusting connecting pipe and be tightly connected to the locking adjusting connecting pipe. The tail end of the dental pad locking connecting sleeve is divided into a plurality of connecting locking pieces. When the relative movement between the locking adjusting connecting pipe and the dental pad locking connecting sleeve causes the connecting locking pieces to contract towards the catheter body, the dental pad locking connecting sleeve and the catheter body can be locked to each other; when the relative movement between the locking adjusting connecting pipe and the dental pad locking connecting sleeve causes the connecting locking pieces to open away from the catheter body, the locking state between the dental pad locking connecting sleeve and the catheter body can be released. A dental pad groove allowing teeth to be embedded is provided on the dental pad sleeve, and the dental pad grooves are symmetrically distributed on the dental pad sleeve; at least one sleeve body groove adapted to the secretion cleaning pipe is further provided on the dental pad sleeve. The sleeve body groove is located between two dental pad grooves on the dental pad sleeve, and the secretion cleaning pipe can be placed in the oral cavity through the sleeve body groove.

8. The double-balloon single-lumen tracheal catheter according to claim 1, wherein: It further includes a video image acquisition mechanism capable of acquiring the position state of the catheter body during use. The video image acquisition mechanism is adaptively connected to the catheter body, and a marked color is applied to the first catheter balloon and the second catheter balloon.

9. The double-balloon single-lumen tracheal catheter according to claim 8, wherein: The video image acquisition mechanism includes a sampling connecting rod that can be embedded in the catheter body and a connecting rod video head located at the head end of the sampling connecting rod. The length of the sampling connecting rod is greater than the length of the catheter body; through the sampling connecting rod, the connecting rod video head can pass through the end hole of the catheter body, or the connecting rod video head can be withdrawn from the catheter body through the sampling connecting rod; the connecting rod video head is electrically connected to the connecting rod video output connector through a connecting rod video line buried in the sampling connecting rod. A video catheter connecting head is provided at the end of the sampling connecting rod. The catheter breathing connecting head and the catheter body are detachably connected. When the catheter breathing connecting head is detached from the catheter body, the video catheter connecting head is adaptively connected to the tail end of the catheter body, and the video catheter connecting head and the tail end of the catheter body are detachably connected. After the video catheter connecting head is adaptively connected to the catheter body, the sampling connecting rod is inserted into the catheter body; the video catheter connecting head is in communication with the catheter body, and the catheter body is adaptively connected to a ventilator / anesthesia machine through the video catheter connecting head. The sampling connecting rod includes a plurality of uniformly distributed connecting rod pieces, and a gas flow groove allowing gas to pass through can be formed between adjacent connecting rod pieces; gas enters the catheter body through the video catheter connecting head, and the gas in the catheter body flows under the guidance of the gas flow groove and can be discharged through the side ventilation part of the catheter and the end hole of the catheter body.

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