Single-lumen single-bag single / double lung ventilation tube

Abstract

This invention relates to a single-lumen, single-bag, single / double-lung ventilation catheter, comprising a catheter body and a catheter breathing connector disposed at the tail end of the catheter body. A side ventilation section and a catheter bag adapted to the side ventilation section are disposed at the head of the catheter body. The side ventilation section communicates with the cavity within the catheter body and is located inside the arc-shaped head end of the catheter body. The catheter bag is located at the head of the catheter body and covers the corresponding outer wall of the head of the catheter body, excluding the side ventilation section. The length direction of the catheter bag is consistent with the length direction of the catheter body, and the length of the catheter bag is greater than the length of the side ventilation section. The side ventilation section is located between the two ends of the catheter bag, and the lower edge of the catheter bag is located between the side ventilation section and the end hole of the catheter body. This invention effectively provides stability and reliability for single-lung and double-lung ventilation and is convenient to use.

Description

Technical Field

[0001] This invention relates to a tracheal tube, and more particularly to a single-lumen, single-bag, single- or double-lung ventilation tube, belonging to the technical field of tracheal tubes. Background Technology

[0002] During thoracic surgery, to create sufficient surgical space, breathing on the operated lung is paused, causing it to collapse. Simultaneously, the non-operated lung is ventilated in one lung to meet the oxygen demand during surgery. After the lung manipulation is completed, temporary ventilation of the operated lung is necessary to check the airtightness of the surgical margin and prevent complications such as pneumothorax caused by air leakage after direct chest wall closure. After surgery, bilateral ventilation is then performed to allow the collapsed operated lung to re-inflate and achieve gas exchange.

[0003] Currently, the most common and primary method for implementing one-lung ventilation is using a double-lumen endotracheal tube (BLTB) to manage the airway. However, double-lumen endotracheal tubes have the following drawbacks:

[0004] 1) Due to the limited diameter of the human trachea, the diameter of a single lumen in a double-lumen endotracheal tube is relatively small. During one-lung ventilation, especially in patients with asthma and COPD (chronic obstructive pulmonary disease), the airway pressure is high, which may cause damage to the non-surgical lung. In patients with pulmonary bullae, this can easily lead to bulla rupture and pneumothorax.

[0005] 2) Due to the presence of two ventilation lumens and the influence of the tube wall, the overall outer diameter of the double-lumen bronchial tube is relatively large. This results in greater damage to the glottis and pharynx during intubation, leading to more complications. The most common complications are postoperative throat pain and hoarseness, and even arytenoid cartilage dislocation.

[0006] 3) The diameter of a double-lumen bronchial tube is limited by the inner diameter of the human trachea. Because the inner diameter of the glottis is smaller in children, the diameter of each lumen is smaller, making it impossible to produce thinner products suitable for children, thus limiting its application in children. Currently, double-lumen bronchial tubes can only be used in children aged 10 and above.

[0007] 4) Due to the limited diameter of the trachea, double-lumen endotracheal tubes have a smaller diameter per lumen, which is not conducive to suctioning. In some patients with poor lung function or those who cannot regain spontaneous breathing after surgery due to other reasons and require mechanical ventilation support, the double-lumen endotracheal tube needs to be removed and a single-lumen endotracheal tube reinserted at the end of the operation to facilitate respiratory management and suctioning during respiratory support. This increases the workload of anesthesiologists and also increases the risk of adverse reactions related to intubation. In some patients with poor intubation conditions, intubation failure can even lead to hypoxia, cardiac arrest, or even death.

[0008] Bronchial occluders combined with single-lumen endotracheal tubes are the most common method for one-lung ventilation and airway management besides double-lumen endotracheal tubes. When postoperative respiratory support requires endotracheal tube retention, tube replacement is unnecessary; the bronchial occluder can simply be removed. However, it also has several drawbacks:

[0009] 1) The placement and positioning of the bronchial occluder is relatively difficult and requires the assistance of video tools. In other words, it is necessary to operate the video tools and the bronchial occluder simultaneously. The operation is relatively complex and requires an experienced anesthesiologist to perform it successfully.

[0010] 2) When positioning the bronchial occluder, the video tool and the bronchial occluder need to be inserted into the single-lumen endotracheal tube used in conjunction. The lumen of the single-lumen endotracheal tube must not be less than 5.5mm. In other words, the bronchial occluder can only be used for patients over 6 years old. It is difficult to use for children under 6 years old.

[0011] 3) When in use, the bronchial occluder is used to block the bronchial opening of the lung on the surgical side, making it difficult to expel air from the lung on the surgical side; it is impossible to perform suctioning on the lung on the surgical side; when it is necessary to inflate the lung on the surgical side, the air in the bronchial occluder cuff needs to be expelled and inflated through the single-lumen tube, which may cause blood or secretions from the bronchus on the surgical side to flow into the main trachea, resulting in contamination of the lung on the non-surgical side and the main trachea.

[0012] 4) The balloon of the bronchial occluder is not easy to fix, the lung isolation effect is unstable, and it is easy to shift during the operation, resulting in poor lung isolation effect. High pressure and low volume balloons are prone to mucosal damage.

[0013] 5) If extubation is not possible after surgery and respiratory support is required, the single-lumen endotracheal tube used in conjunction with it must be a subglottic suction endotracheal tube, which significantly increases the cost.

[0014] 6) Bronchial occluders are difficult to manufacture and expensive, costing several times more than double-lumen bronchial tubes, thus placing a heavy financial burden on patients.

[0015] Currently, when effective one-lung ventilation management tools are lacking for young children, a single-lumen endotracheal tube is often inserted into the non-surgical side to implement one-lung ventilation. Of course, single-lumen endotracheal tubes can also be used in groups other than children, but the disadvantages of using single-lumen endotracheal tubes are quite significant:

[0016] 1) A single-lumen endotracheal tube needs to be inserted into the bronchus on the non-surgical side, which results in the bronchial opening of the lung on the surgical side being basically blocked. It is difficult for the air in the lung on the surgical side to be expelled, which is not conducive to the collapse of the lung on the surgical side and is not conducive to providing sufficient operating space for the operation.

[0017] 2) When it is necessary to inflate the operated lung during or at the end of the operation, the single-lumen endotracheal tube needs to be withdrawn slightly, with the tip of the single-lumen endotracheal tube retracted into the main trachea, so that the inflation of the operated lung can be completed under bilateral lung ventilation. Children's airways are shorter, and the tube withdrawal procedure can easily lead to the endotracheal tube being dislodged from the airway, which may result in emergency lateral decubitus endotracheal intubation, leading to hypoxia, or even cardiac arrest or death.

[0018] 3) When temporary expansion of the operated lung is required during surgery, the single-lumen endotracheal tube needs to be retracted slightly, with the tip of the tube inserted into the main trachea under bilateral ventilation. Afterward, the tip of the single-lumen endotracheal tube needs to be reinserted into the non-operated side. This is a positioning procedure requiring precise depth and often requires several attempts. This can lead to mucosal damage, bleeding, or even bronchospasm at the bronchial opening.

[0019] 4) Bleeding and mucus accumulation in the lung on the surgical side can easily lead to atelectasis due to blood clots or mucus blocking the bronchial opening on the surgical side, or contamination of the lung and main trachea on the non-surgical side due to blood or mucus flowing into the bronchus and main trachea on the non-surgical side.

[0020] In summary, there is a lack of a simple, effective, safe, and practical one-lung ventilation management tool in clinical practice that can effectively expel and inflate the operated lung during surgery and eliminate the need for extubation or intubation when respiratory support is required after surgery. Summary of the Invention

[0021] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a single-lumen single-bag single-double-lung ventilation tube with a compact structure. During surgery, it can effectively manage the degassing and expansion of the operated lung, thereby achieving the purpose of double-lung ventilation, improving the stability and reliability of double-lung ventilation, and is convenient to operate and use.

[0022] According to the technical solution provided by the present invention, the single-lumen single-bag single-double-lung ventilation catheter includes a catheter body and a catheter breathing connector disposed at the tail end of the catheter body. The catheter body has a catheter body end hole at the head end, and the catheter body end hole can communicate with the catheter breathing connector through the catheter body.

[0023] A catheter side ventilation section and a catheter balloon adapted to the catheter side ventilation section are provided at the head of the catheter body. The catheter side ventilation section is connected to the cavity inside the catheter body, and the catheter side ventilation section is located inside the arc-shaped head end of the catheter body.

[0024] The catheter balloon is located at the head of the catheter body, and the catheter balloon covers the corresponding outer wall of the head of the catheter body except for the side ventilation section of the catheter; the length direction of the catheter balloon is consistent with the length direction of the catheter body, the length of the catheter balloon is greater than the length of the side ventilation section of the catheter, and the side ventilation section of the catheter is located between the two ends of the catheter balloon, and the lower edge of the catheter balloon is located between the side ventilation section of the catheter and the end hole of the catheter body;

[0025] A dental pad mechanism for opening the oral cavity is provided on the catheter body, and the dental pad mechanism can be locked on the catheter body; when the dental pad mechanism is released from the locking state of the catheter body, the catheter body and the dental pad mechanism can move relative to each other.

[0026] The duct side ventilation section includes one or more side ventilation holes, which penetrate the corresponding side wall of the duct body;

[0027] It also includes a balloon inflation / deflation connecting tube for inflating and deflating the balloon, and an inflation / deflation sealing valve adapted to and connected to the balloon inflation / deflation connecting tube; the end hole of the balloon is obliquely wedge-shaped or flat at the head end of the balloon.

[0028] When the end hole of the catheter body is wedge-shaped at the tip of the catheter body, the inclined surface formed by the end hole of the catheter body and the ventilation part on the side of the catheter body are located on the same side of the catheter body;

[0029] When the end hole of the catheter body is flat at the tip of the catheter body, an end vent hole is provided at the tip of the catheter body. The end vent hole penetrates the wall of the catheter body and is located between the lower edge of the catheter body and the end hole of the catheter body. The end vent hole and the ventilation part on the side of the catheter body are located on the same side of the catheter body.

[0030] The catheter breathing connector includes a connector tube that can be adapted to connect with the tail end of the catheter body and a connector sleeve for adapting to connect with a ventilator / anesthesia machine. The tail end of the catheter body can be fitted onto the connector tube, and the connector sleeve can be fitted onto the connector tube. The connector sleeve can communicate with the catheter body through the connector tube, and the connector sleeve can rotate relative to the connector tube and the catheter body.

[0031] The connector conduit is provided with a connector conduit protrusion ring, and a connector connecting sleeve groove is provided in the pipe wall of the connector connecting sleeve to allow the connector conduit to be embedded.

[0032] When the connector sleeve is fitted onto the connector conduit, the connector conduit is embedded in the connector sleeve groove, and the connector conduit protrusion can be embedded in the connector sleeve positioning groove inside the connector sleeve. By utilizing the cooperation between the connector conduit protrusion and the connector sleeve positioning groove, the connector sleeve can rotate on the connector conduit.

[0033] The dental pad mechanism includes a dental pad locking sleeve that can be fitted onto the guide tube and a locking adjustment tube that can be fitted onto the guide tube and adapted to be connected with the dental pad locking sleeve. A dental pad sleeve for tooth occlusion is fitted onto the locking adjustment tube.

[0034] An internal thread is provided on the inner wall of the locking adjustment pipe, and the wall thickness of the locking adjustment pipe gradually changes; an external thread is provided on the outer wall of the tooth pad locking connecting sleeve that can be adapted to the internal thread of the adjustment pipe; the head end of the tooth pad locking connecting sleeve can extend into the locking adjustment pipe and be tightly connected to the locking adjustment pipe; the tail end of the tooth pad locking connecting sleeve is divided into several connecting locking pieces.

[0035] When the relative movement between the locking adjustment tube and the dental pad locking sleeve causes the connecting locking plate to retract closer to the catheter body, it can lock the dental pad locking sleeve and the catheter body together; when the relative movement between the locking adjustment tube and the dental pad locking sleeve causes the connecting locking plate to open away from the catheter body, it can release the locking state between the dental pad locking sleeve and the catheter body.

[0036] It also includes a video image acquisition mechanism that can capture the position and status of the catheter body during use. The video image acquisition mechanism is adapted and connected to the catheter body and has marking colors applied to the catheter body.

[0037] The video head image acquisition mechanism includes a sampling link that can be embedded in the conduit body and a link video head located at the head end of the sampling link. The length of the sampling link is greater than the length of the conduit body. The sampling link allows the link video head to pass through the end hole of the conduit body, or to be withdrawn from the conduit body. The link video head can be electrically connected to the link video output connector through a link video cable embedded in the sampling link.

[0038] A video conduit connector is provided at the end of the sampling rod. The conduit breathing connector is detachably connected to the conduit body. When the conduit breathing connector is detached from the conduit body, the video conduit connector is adapted to the tail end of the conduit body. The video conduit connector is detachably connected to the tail end of the conduit body.

[0039] After the video catheter connector is fitted and connected to the catheter body, the sampling rod can be inserted into the catheter body; the video catheter connector is connected to the catheter body, and the catheter body can be fitted and connected to the ventilator / anesthesia machine through the video catheter connector;

[0040] The sampling link includes several evenly distributed link plates, and gas flow channels that allow gas to pass through can be formed between adjacent link plates; gas enters the conduit body through the video conduit connector, and the gas in the conduit body flows under the guidance of the gas flow channels and can be discharged through the side ventilation section of the conduit and the end hole of the conduit body.

[0041] The video conduit connector includes a video connection tube that can be adapted to the conduit body, an adjustment transition tube that can be adapted to the video connection tube, and a video ventilation tube that can be adapted to the adjustment transition tube.

[0042] The end of the catheter can be fitted onto the video connection tube. The inner wall of the transition tube is provided with a transition adjustment internal thread. It can be adapted and connected to a ventilator / anesthesia machine through the video ventilation tube. The video ventilation tube can be connected to the video connection tube through the adjustment transition tube. The adjustment transition tube can rotate relative to the video connection tube. The video ventilation tube can rotate relative to the adjustment transition tube.

[0043] An external thread that can be adapted to the transition adjustment internal thread is provided on the outer wall of the sampling rod. The sampling rod passes through the video ventilation pipe, the adjustment transition pipe and the video connection pipe in sequence before entering the conduit body. The position of the sampling rod in the conduit body can be adjusted by the cooperation between the external thread and the transition adjustment internal thread.

[0044] Advantages of this invention: The tail end of the catheter body is connected and fitted with the catheter breathing connector; the side ventilation section of the catheter is connected to the cavity inside the catheter body; the side ventilation section is located inside the arc-shaped head end of the catheter body; the catheter capsule covers the corresponding outer wall of the catheter body head except for the side ventilation section; the side ventilation section is located between the two ends of the catheter capsule, and the lower edge of the catheter capsule is located between the side ventilation section and the end hole of the catheter body. Thus, the side ventilation section and the end hole of the catheter body can simultaneously expel gas from the catheter body. When the side ventilation section corresponds to the bronchial opening of the surgical lung, the ventilation and expansion of the surgical lung can be effectively managed during surgery, thereby achieving the purpose of bilateral lung ventilation, improving the stability and reliability of bilateral lung ventilation, and making operation convenient. Attached Figure Description

[0045] Figure 1 This is a perspective view of one embodiment of the present invention.

[0046] Figure 2 To and Figure 1 Cross-sectional view of the middle endotracheal tube.

[0047] Figure 3 This is a schematic diagram of the video image acquisition mechanism using a sampling linkage and the catheter body in this invention.

[0048] Figure 4 for Figure 3 A cross-sectional view of the middle section.

[0049] Figure 5 for Figure 3 A schematic diagram of a medium-length video image acquisition mechanism.

[0050] Figure 6This is a detailed enlarged view of the sampling linkage of the present invention.

[0051] Figure 7 This is a perspective view of the video conduit connector of the present invention.

[0052] Figure 8 This is a cross-sectional view of the video conduit connector of the present invention.

[0053] Figure 9 This is a perspective view of the video ventilation connecting pipe of the present invention.

[0054] Figure 10 This is a perspective view of the adjusting transition connecting pipe of the present invention.

[0055] Figure 11 This is a three-dimensional view of the video connection pipe of the present invention.

[0056] Figure 12 This is a perspective view of the first ring body that is rotated to connect according to the present invention.

[0057] Figure 13 This is a perspective view of the video image acquisition mechanism using a connecting line and a conduit body in this invention.

[0058] Figure 14 for Figure 13 A cross-sectional view of the middle section.

[0059] Figure 15 This is a cross-sectional view of the connecting wire of the present invention inside the conduit body.

[0060] Figure 16 This is a cross-sectional view of the video head of the present invention inside the conduit body.

[0061] Figure 17 This is a schematic diagram showing the position of the video head of the cable body and the ventilation section on the side of the cable body.

[0062] Figure 18 This is a schematic diagram of the end hole of the catheter body of the present invention when it is wedge-shaped at the tip end of the catheter body.

[0063] Figure 19 This is a schematic diagram showing the vent hole at the tip of the catheter body of the present invention.

[0064] Figure 20 This is a schematic diagram of the catheter end hole of the present invention when the head end of the catheter body is flat.

[0065] Figure 21 This is a perspective view of the catheter breathing connector of the present invention.

[0066] Figure 22 This is a cross-sectional view of the catheter breathing connector of the present invention.

[0067] Figure 23This is a perspective view of the dental pad mechanism of the present invention.

[0068] Figure 24 This is a perspective view of the connection and engagement of the dental pad sleeve and the dental pad locking connecting sleeve of the present invention.

[0069] Figure 25 This is a perspective view of the connection and mating of the locking adjustment tube and the locking connecting sleeve of the dental pad according to the present invention.

[0070] Figure 26 This is a cross-sectional view of the locking adjustment pipe of the present invention.

[0071] Explanation of reference numerals in the attached drawings: 1-Catheter body, 2-Catheter capsule body, 3-Side vent hole, 4-Inflation / deflation sealing valve, 5-Capsule inflation / deflation connecting pipe, 6-Locking and adjusting connecting pipe, 7-Connector connecting sleeve, 8-Dental pad sleeve, 9-Dental pad groove, 10-Dental pad sleeve protrusion, 11-Sleeve groove, 12-Connector catheter connecting pipe protrusion ring, 13-Connector catheter connecting pipe, 14-Connecting rod video head, 15-Sampling connecting rod, 16-Connecting rod video output connector, 17-Connecting rod video cable, 18-Video ventilation connecting pipe, 19-Dental pad locking connecting sleeve, 20-Adjusting transition connecting pipe, 21-Video connection connecting pipe, 22-Video ventilation cable side pipe, 23-Rotary connection first ring body, 24-Rotary connection second ring body, 25-Connecting rod external thread, 26-Connecting rod plate, 27-Connecting rod hole, 28-Ventilation connecting pipe inner cavity, 29-Side pipe positioning and sealing body. 30-Transition adjustment internal thread, 31-Lower body of vent pipe, 32-Rotary connection first groove, 33-Rotary connection second groove, 34-Joint connecting sleeve wall groove, 35-Video connecting pipe end plate, 36-Video connecting pipe rotation positioning groove, 37-Video connecting pipe inner limit block, 38-Annular body, 39-Annular body end groove, 40-Annular body inner step, 41-Connecting line, 42-Line video connector, 43-Line video head, 44-Base guide limit groove, 45-Head end vent, 46-Joint connecting sleeve positioning groove, 47-Joint conduit connecting pipe end plate, 48-Sloping surface, 49-Joint connecting sleeve groove, 50-Adjusting connecting pipe internal thread, 51-Connecting locking piece, 52-Locking sleeve external thread, 53-Locking piece dividing groove, and 54-Conduit body end hole and 55-Video head base. Detailed Implementation

[0072] The present invention will be further described below with reference to specific accompanying drawings and embodiments.

[0073] In order to effectively ensure the ventilation of the right lung and improve the ease of use, the present invention includes a catheter body 1 and a catheter breathing connector disposed at the tail end of the catheter body 1. The head end of the catheter body 1 has a catheter body end hole 54, which can communicate with the catheter breathing connector through the catheter body 1.

[0074] A catheter side ventilation section and a catheter balloon 2 adapted to the catheter side ventilation section are provided at the head of the catheter body 1. The catheter side ventilation section is connected to the cavity inside the catheter body 1, and the catheter side ventilation section is located inside the arc-shaped head end of the catheter body 1.

[0075] The catheter balloon 2 is located at the head of the catheter body 1, and the catheter balloon 2 covers the corresponding outer wall of the head of the catheter body 1 except for the catheter side ventilation section; the length direction of the catheter balloon 2 is consistent with the length direction of the catheter body 1, the length of the catheter balloon 2 is greater than the length of the catheter side ventilation section, and the catheter side ventilation section is located between the two ends of the catheter balloon 2, and the lower edge of the catheter balloon 2 is located between the catheter side ventilation section and the catheter end hole 54.

[0076] Specifically, the catheter body 1, the catheter breathing connector, and the catheter capsule 2 must all be made of materials that meet medical standards. The length and outer diameter of the catheter body 1 can all use existing specifications, which can be selected according to needs and will not be elaborated here. The catheter breathing connector is connected to the tail end of the catheter body 1. The catheter body 1 can be adapted to connect to the ventilator / anesthesia machine for respiratory support through the catheter breathing connector, thereby providing the required respiratory support through the catheter body 1. Of course, after the catheter breathing connector is connected to the tail end of the catheter body 1, it ensures the sealing capability of the connection between the catheter body connector and the tail end of the catheter body 1. The catheter body end hole 54 is located at the tip end of the catheter body 1 and communicates with the catheter body 1. During respiratory support, the gas entering the catheter body 1 can be released through the catheter body end hole 54.

[0077] Generally, the tip of the catheter body 1 is arc-shaped, and the side ventilation section is located at the bottom of the arc-shaped opening of the catheter body 1, that is, the side ventilation section is located inside the arc-shaped head of the catheter body 1. The side ventilation section penetrates the wall of the catheter body 1 on the side where it is located. That is, when the catheter body 1 is used for respiratory support after intubation, gas can also be released using the side ventilation section. Thus, the gas in the catheter body 1 can be released simultaneously through the catheter end hole 54 and the side ventilation section, thereby effectively achieving respiratory support.

[0078] To achieve ventilation, a catheter balloon 2 is provided at the tip of the catheter body 1, and the catheter balloon 2 wraps around the outer wall of the catheter body 1. In this embodiment of the invention, the length direction of the catheter balloon 2 is consistent with the length direction of the catheter body 1, but the length of the catheter balloon 2 is much smaller than the length of the catheter body 1. In order not to affect the release of gas through the side ventilation section of the catheter, the catheter balloon 2 wraps around the corresponding outer wall of the tip of the catheter body 1 except for the side ventilation section, and the side ventilation section is located between the two ends of the catheter balloon 2, that is, the outer ring of the side ventilation section is the catheter balloon 2 that wraps around the catheter body 1, and the lower edge of the catheter balloon 2 is located between the side ventilation section and the end hole 54 of the catheter body.

[0079] When the lung being operated on is the left lung, after anesthesia, the catheter 1 is inserted into the airway using common techniques. The depth and position of the catheter 1 are adjusted so that the catheter balloon 2 is located to the right of the carina, that is, the anterior half of the catheter balloon 2 is located within the opening of the right bronchus, and the posterior half of the catheter balloon 2 is located within the trachea behind the carina. At this time, the lateral ventilation section of the catheter is located within the main trachea behind the carina, so that the lateral ventilation section of the catheter is directly opposite the opening of the left bronchus. An appropriate amount of gas is inflated into the catheter balloon 2, causing it to expand. The anterior half of the catheter balloon 2 blocks the right bronchus, while the posterior half blocks the main trachea. The catheter 1 can then provide respiratory support to the right lung through the catheter tip hole 54, and simultaneously provide respiratory support to the left lung through the lateral ventilation section of the catheter, thus enabling bilateral lung ventilation. In specific implementation, the anterior half of the catheter balloon 2 specifically refers to the part of the catheter balloon 2 adjacent to the catheter end hole 54, and the posterior half of the catheter balloon 2 specifically refers to the part of the catheter balloon 2 away from the catheter end hole 54.

[0080] Before the surgery begins, disconnect the ventilator / anesthesia machine from the end of catheter body 1 to pause respiratory support for three minutes. If necessary, negative pressure suction can be applied to catheter body 1. Air in the right lung is discharged through the end hole 54 of the catheter body, and air in the left lung is discharged through the side ventilation section of the catheter body and through the end of catheter body 1. At this time, both the left and right lungs are in a collapsed state.

[0081] At the start of the surgery, keeping the depth and position of catheter 1 unchanged, the catheter 1 is rotated 180 degrees, so that the lateral ventilation section of the catheter changes from facing the opening of the left bronchus to facing the right lateral wall behind the carina. The catheter breathing connector at the tail of catheter 1 is then connected to the ventilator / anesthesia machine to provide the necessary respiratory support. Because the lateral ventilation section of the catheter corresponds to the right lateral wall behind the carina, the cooperation between the lateral wall and the lateral ventilation section of the catheter achieves closure of the lateral ventilation section, forming a blind hole. Catheter 1 provides single-lung respiratory support to the right lung through the end hole 54, enabling right-sided single-lung ventilation. The collapsed left lung provides sufficient space in the left pleural cavity on the surgical side for surgical manipulation.

[0082] When the surgery is completed and it is necessary to check the left lung's seal or perform bilateral ventilation, keep the depth and position of catheter body 1 unchanged and rotate it 180 degrees so that the ventilation section on the side of the catheter is once again aligned with the opening of the left bronchus. Simultaneous bilateral ventilation of both the right and left lungs can be achieved using the catheter tip hole 54 and the ventilation section on the side of the catheter body 1. If there is air leakage at the anastomosis site in the left lung, the leaking suture site needs to be reinforced and repaired until the anastomosis inspection is satisfactory, thus completing the left lung surgery. In short, the entire process does not require retraction of catheter body 1 into the main trachea; simply rotating catheter body 1 is sufficient. This avoids the problems associated with retracting catheter body 1 into the main trachea in existing procedures, improving the convenience and reliability of bilateral ventilation.

[0083] After the left lung surgery is completed, bilateral lung ventilation should be restored promptly to minimize the time of lung collapse, reduce the decrease in alveolar surfactant, and reduce the likelihood of atelectasis. Once the left lung surgery is complete and the pleural cavity can be closed, retract catheter 1 3-5 cm, allowing catheter balloon 2 to retract into the main trachea. This reduces the stimulation of catheter balloon 2 on the carina and lowers cardiovascular response. At this point, the lateral ventilation portion of the catheter aligns with the lateral wall of the main trachea, forming a blind hole that does not affect normal bilateral lung ventilation.

[0084] Similarly, when the lung being operated on is the right lung, the specific process of using catheter 1 to perform the surgical procedure with the left and right lungs can be referred to the above description. The specific process is well known to those skilled in the art and will not be repeated here.

[0085] Furthermore, the venting section on the side of the catheter includes one or more venting holes 3, the venting holes 3 penetrate the corresponding side wall of the catheter body 1, and the length of the venting section on the side of the catheter is 1.5cm to 3cm.

[0086] The distance between the lower edge of the catheter balloon 2 and the end hole 54 of the catheter body is 0.8cm to 2cm; the distance between the upper edge of the catheter balloon 2 and the outer edge of the ventilation section on the side of the catheter is 0.8cm to 2cm.

[0087] In this embodiment of the invention, the side ventilation section of the catheter can be one or more side ventilation holes 3. The side ventilation holes 3 penetrate the wall of the catheter body 1 on the side where it is located. When the side ventilation section of the catheter is a single side ventilation hole 3, the diameter and size of the side ventilation hole 3 are consistent with the side ventilation section of the catheter, thereby maximizing the ventilation effect. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 13 , Figure 14 , Figure 18 , Figure 19 as well as Figure 20The embodiments shown all illustrate the implementation of a side ventilation port 3 for the catheter side ventilation section. The length of the catheter side ventilation section is 1.5cm to 3cm. Specifically, the length of the catheter side ventilation section refers to the length that is consistent with the length direction of the catheter body 1. When the catheter side ventilation section adopts a side ventilation port 3, the length of the side ventilation port 3 is consistent with the length of the catheter side ventilation section.

[0088] In practice, the distance between the lower edge of the catheter balloon 2 and the end hole 54 of the catheter body is 0.8cm to 2cm, while the distance between the upper edge of the catheter balloon 2 and the outer edge of the ventilation section on the side of the catheter body is 0.8cm to 2cm. By setting the distance between the catheter balloon 2 and the end hole 54 of the catheter body, as well as the ventilation section on the side of the catheter body, ventilation of the non-operated lung can be guaranteed, and ventilation of the operated lung can be guaranteed when needed, effectively achieving the purpose of bilateral lung ventilation.

[0089] Furthermore, it also includes a balloon inflation / deflation connecting pipe 5 for inflating and deflating the balloon body 2, and an inflation / deflation sealing valve 4 adapted to and connected to the balloon inflation / deflation connecting pipe 5; the end hole 54 of the catheter body is obliquely wedge-shaped or flat at the head end of the catheter body 1.

[0090] In this embodiment of the invention, the catheter balloon 2 can be inflated or deflated through the balloon inflation / deflation connecting pipe 5 and the inflation / deflation sealing valve 4. The process of inflating or deflating the catheter balloon 2 using the balloon inflation / deflation connecting pipe 5 and the inflation / deflation sealing valve 4 is consistent with the existing method and is well known to those skilled in the art, and will not be described in detail here.

[0091] Furthermore, when the end hole 54 of the catheter body is wedge-shaped at the head end of the catheter body 1, the inclined surface formed by the end hole 54 of the catheter body is located on the same side of the catheter body 1 as the ventilation part on the side of the catheter.

[0092] When the end hole 54 of the catheter body 1 is flat at the tip end, a vent hole 45 is provided at the tip end of the catheter body 1. The vent hole 45 penetrates the wall of the catheter body 1. The vent hole 45 is located between the lower edge of the catheter balloon 2 and the end hole 54 of the catheter body, and the vent hole 45 and the ventilation part on the side of the catheter are located on the same side of the catheter body 1.

[0093] In this embodiment of the invention, when the end hole 54 of the catheter body is wedge-shaped at the tip of the catheter body 1, it is consistent with the situation at the tip of the existing catheter body 1, such as... Figure 18As shown, the end hole 54 of the catheter body is wedge-shaped at the tip of the catheter body 1. The wedge-shaped end hole 54 forms a ramp 48 at the tip of the catheter body 1. The front side of the ramp 48 is on the same side of the catheter body 1 as the side ventilation portion, while the back side of the ramp 48 and the side ventilation portion are located on opposite sides of the catheter body 1. The height of the ramp 48 gradually decreases along the direction from the tail end of the catheter body 1 towards the tip, thus forming a pointed tip at the tip of the catheter body 1.

[0094] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 13 , Figure 14 , Figure 18 and Figure 19 As shown, the end hole 54 of the catheter body 1 is flat at the tip, meaning the tip of the catheter body 1 has a straight end face. Compared to a wedge-shaped end hole 54 at the tip of the catheter body 1, a flat end hole 54 effectively reduces the length of the catheter body 1, further improving the convenience of intubation and other operations. When using the catheter body 1 and the end hole 54 to provide respiratory support to the right lung, an end vent 45 is provided on the catheter body 1 to accommodate ventilation of the upper lobe bronchus of the right lung. The end vent 45 extends through the catheter body 1. Generally, the end vent 45 can be located on the same side as the ventilation section of the catheter, between the lower edge of the catheter capsule 2 and the end hole 54. In practice, the number of vent holes 54 at the tip of the catheter body 1 can be selected as needed. The figure above shows a case where one vent hole 45 is provided at the tip of the catheter body 1. When the catheter body tip hole 54 of the catheter body 1 enters the right bronchus, the vent hole 45 can be used to deliver air to the upper lobe bronchus of the right lung. This also avoids the catheter body 1 being blocked by the bronchial wall during intubation, which would affect the ventilation effect on the non-surgical lung, further improving the reliability of respiratory support.

[0095] like Figure 21 and Figure 22 As shown, the catheter breathing connector includes a connector catheter tube 13 that can be adapted to connect with the tail end of the catheter body 1 and a connector connecting sleeve 7 for adapting to connect with a ventilator / anesthesia machine. The tail end of the catheter body 1 can be fitted onto the connector catheter tube 13, and the connector connecting sleeve 7 can be fitted onto the connector catheter tube 13. The connector connecting sleeve 7 can communicate with the catheter body 1 through the connector catheter tube 13, and the connector connecting sleeve 7 can rotate relative to the connector catheter tube 13 and the catheter body 1.

[0096] In this embodiment of the invention, the tail end of the catheter body 1 can be fitted onto the connector catheter connecting tube 13. After the catheter body 1 is fitted onto the connector catheter connecting tube 13, the sealing performance of the joint between the catheter body 1 and the connector catheter connecting tube 13 is ensured, meaning that gas will not escape through the joint between the catheter body 1 and the connector catheter connecting tube 13. The connector connecting sleeve 7 is compatible with a ventilator / anesthesia machine; that is, the size and shape of the connector connecting sleeve 7 are compatible with the ventilator / anesthesia machine, thus enabling connection and cooperation with the ventilator / anesthesia machine. The connector connecting sleeve 7 communicates with the catheter body 1 through the connector catheter connecting tube 13, allowing the ventilator / anesthesia machine to deliver gas into the catheter body 1. In specific implementation, the connector connecting sleeve 7 can rotate relative to the connector catheter connecting tube 13. After the connector catheter connecting tube 13 is connected to the catheter body 1 and remains stable, the connector connecting sleeve 7 can also rotate relative to the catheter body 1.

[0097] After the catheter 1 is connected to the ventilator / anesthesia machine via the connector connecting cannula 7, the catheter 1 is prone to twisting due to the positional relationship between the patient and the ventilator / anesthesia machine. A twisted catheter 1 can affect ventilation and, in severe cases, compromise its connection with the ventilator / anesthesia machine. In this embodiment of the invention, if twisting occurs in the catheter 1 after connection to the ventilator / anesthesia machine via the connector connecting cannula 7, the twisting can be eliminated by rotating the catheter 1 relative to the connector connecting cannula 7. Furthermore, eliminating the twisting of the catheter 1 will not affect normal respiratory support through the catheter 1.

[0098] Furthermore, a connector conduit 13 is provided with a connector conduit convex ring 12, and a connector connecting sleeve groove 49 is provided in the pipe wall of the connector connecting sleeve 7 to allow the connector conduit 13 to be embedded.

[0099] When the connector sleeve 7 is fitted onto the connector conduit 13, the connector conduit 13 is embedded in the connector sleeve groove 49, and the connector conduit protrusion 12 can be embedded in the connector sleeve positioning groove 46 inside the connector sleeve 7. With the cooperation of the connector conduit protrusion 12 and the connector sleeve positioning groove 46, the connector sleeve 7 can rotate on the connector conduit 13.

[0100] In this embodiment of the invention, the connector conduit connecting ring 12 protrudes from the connector conduit connecting tube 13, and the connector conduit connecting ring 12 is distributed along the circumferential surface of the connector conduit connecting tube 13. A connector connecting sleeve groove 49 is provided inside the tube wall of the connector connecting sleeve 7, and the length of the connector connecting sleeve groove 49 is less than the length of the connector connecting sleeve 7. The connector conduit connecting tube 13 can extend into the connector connecting sleeve groove 49. The connector connecting sleeve groove 49 is annular within the connector connecting sleeve 7. A connector connecting sleeve positioning groove 46 is provided on the inner wall of the connector connecting sleeve groove 49, which allows the connector conduit connecting ring 12 to be embedded. When the connector conduit connecting ring 12 is embedded in the connector connecting sleeve positioning groove 46, the connector connecting sleeve 7 can rotate on the connector conduit connecting tube 13, that is, relative rotation between the connector connecting sleeve 7 and the connector conduit connecting tube 13 is realized. Generally, the connector conduit connecting ring 12 is fitted with a clearance fit between the connector connecting sleeve positioning groove 46 and the connector connecting sleeve, which does not affect the rotation of the connector connecting sleeve 7 relative to the connector conduit connecting pipe 13.

[0101] In specific implementation, a joint connecting sleeve wall groove 34 is provided on the joint connecting sleeve 7, the joint connecting sleeve wall groove 34 penetrates the joint connecting sleeve 7, and the joint connecting sleeve wall groove 34 corresponds directly to the joint connecting sleeve positioning groove 46. The joint connecting sleeve positioning groove 46 is annular, while the joint connecting sleeve wall groove 34 is one or more discontinuous forms. In addition, through the cooperation of the contact surfaces of the joint connecting sleeve 7 and the joint connecting conduit 13, gas inside the joint connecting sleeve 7 will not escape through the joint connecting sleeve groove 49, or through the joint connecting sleeve groove 49 and the joint connecting sleeve wall groove 34. Of course, a sealing ring can also be provided at the joint between the joint connecting sleeve 7 and the joint connecting conduit 13 to further ensure airtightness during use; after the sealing ring is provided, it should be designed so as not to affect the rotation of the joint connecting sleeve 7 on the joint connecting conduit 13. The connector catheter connector 13 is also provided with connector catheter connector end plates 47 distributed on opposite sides, which make it easy to hold the entire catheter breathing connector.

[0102] Furthermore, a dental pad mechanism for opening the oral cavity is provided on the catheter body 1. The dental pad mechanism can be locked on the catheter body 1. When the dental pad mechanism is released from the locking state of the catheter body 1, the dental pad mechanism can move relative to the catheter body 1 on the catheter body 1.

[0103] In this embodiment of the invention, a dental pad mechanism is disposed on the catheter body 1. The dental pad mechanism opens the oral cavity, allowing the patient's teeth to bite down. The dental pad mechanism can be locked onto the catheter body 1, facilitating the stability of the open oral cavity. When the position of the catheter body 1 needs to be adjusted, the locking state between the dental pad mechanism and the catheter body 1 needs to be released. After releasing the locking state, the dental pad mechanism and the catheter body 1 can move relative to each other. This relative movement specifically includes rotation of the catheter body 1 relative to the dental pad mechanism, or pulling / pushing the catheter body 1. During the movement of the catheter body 1, the dental pad mechanism can maintain the openness of the oral cavity. Compared with existing dental pad and catheter body 1 connections, this improves the convenience of adjusting the catheter body 1.

[0104] like Figure 23 , Figure 24 , Figure 25 and Figure 26 As shown, the dental pad mechanism includes a dental pad locking connecting sleeve 19 that can be fitted onto the guide tube 1 and a locking adjustment connecting tube 6 that can be fitted onto the guide tube 1 and adapted to the dental pad locking connecting sleeve 19. A dental pad sleeve 8 for tooth occlusion is fitted onto the locking adjustment connecting tube 6.

[0105] An internal thread 50 is provided on the inner wall of the locking adjustment pipe 6, and the wall thickness of the locking adjustment pipe 6 gradually changes; an external thread 52 is provided on the outer wall of the tooth pad locking connecting sleeve 19, which can be adapted to the internal thread 50 of the adjustment pipe; the head end of the tooth pad locking connecting sleeve 19 can extend into the locking adjustment pipe 6 and be tightly connected to the locking adjustment pipe 6; the tail end of the tooth pad locking connecting sleeve 19 is divided into several connecting locking pieces 51.

[0106] When the relative movement between the locking adjustment tube 6 and the dental pad locking sleeve 19 causes the connecting locking piece 51 to retract closer to the catheter body 1, it can lock the dental pad locking sleeve 19 and the catheter body 1 together; when the relative movement between the locking adjustment tube 6 and the dental pad locking sleeve 19 causes the connecting locking piece 51 to open away from the catheter body 1, it can release the locking state between the dental pad locking sleeve 19 and the catheter body 1.

[0107] In this embodiment of the invention, both the locking adjustment tube 6 and the dental pad locking connecting sleeve 19 can be fitted onto the catheter body 1, and the dental pad sleeve 8 is fitted onto the locking adjustment tube 6. After the dental pad sleeve 8 is fitted onto the locking adjustment tube 6, the dental pad sleeve 8 can remain stable with the locking adjustment tube 6, thus achieving stability in opening the oral cavity.

[0108] The inner wall of the locking adjusting pipe 6 is provided with an internal thread 50, and the wall thickness of the locking adjusting pipe 6 gradually changes, such as... Figure 26 As shown. Figure 26In the middle section, along the direction from top to bottom, the wall of the locking adjustment pipe 6 gradually thins, and the internal thread 50 of the adjustment pipe also follows the wall of the locking connection pipe 6. The outer wall of the tooth pad locking connection sleeve 19 is provided with a locking sleeve external thread 52, allowing the tooth pad locking connection sleeve 19 to connect and engage with the internal thread 50 of the locking adjustment pipe 6 via the locking sleeve external thread 52. The tail end of the tooth pad locking connection sleeve 19 forms several connecting locking pieces 51 through several locking piece dividing grooves 53, and each connecting locking piece 51 also has a locking sleeve external thread 52.

[0109] As explained above, by utilizing the change in the inner wall thickness of the locking adjustment tube 6 in conjunction with the dental pad locking sleeve 19 and the connecting locking piece 51, the relative movement of the locking adjustment tube 6 and the dental pad locking sleeve 19 causes the connecting locking piece 51 of the dental pad locking sleeve 19 to contract and press tightly against the catheter body 1, thereby achieving mutual locking between the dental pad locking sleeve 19 and the catheter body 1, that is, mutual locking between the dental pad mechanism and the catheter body 1. Rotating the locking adjustment tube 6 and releasing the connecting locking piece 51 from pressing against the catheter body 1 releases the locking state between the dental pad locking sleeve 19 and the catheter body 1, thus achieving the locking state between the dental pad mechanism and the catheter body 1. In specific implementation, when the locking adjustment tube 6 with a larger wall thickness is tightly connected to the connecting locking piece 51, the connecting locking piece 51 can be pressed tightly against the catheter body 1.

[0110] Furthermore, the dental pad cover 8 is provided with dental pad grooves 9 that allow teeth to be embedded, and the dental pad grooves 9 are symmetrically distributed on the dental pad cover 8; at least one sleeve groove 11 that can be adapted to the suction tube is also provided on the dental pad cover 8, and the sleeve groove 11 is located between two dental pad grooves 9 on the dental pad cover 8, and the suction tube can be placed in the oral cavity through the sleeve groove 11.

[0111] In this embodiment of the invention, the dental pad cover 8 is generally made of medical-grade silicone. A dental pad groove 9 is recessed into the dental pad cover 8 and is elliptical in shape, with its length direction corresponding to the length direction of the teeth. Generally, two symmetrically distributed sleeve grooves 11 are provided on the dental pad groove 8. Each sleeve groove 11 is formed by providing two dental pad protrusions 10 on the dental pad cover 8. The sleeve grooves 11 provide space for suction catheters, allowing the suction catheter to be placed inside the oral cavity, thus improving the stability and reliability of suctioning.

[0112] Furthermore, it also includes a video image acquisition mechanism that can acquire the position and status of the catheter body 1 during use. The video image acquisition mechanism is adapted and connected to the catheter body 1 and has marking colors applied to the catheter capsule 2.

[0113] In this embodiment of the invention, the video image acquisition mechanism can capture the positional status of the catheter 1, such as during insertion and during use, thereby improving the accuracy and efficiency of the insertion process. When video image information of the positional status during use can also be acquired, the entire respiratory process can be effectively monitored. Specifically, the catheter 1 is generally transparent, and the catheter capsule 2 is coated with a marking color to avoid the situation where the positional status of the catheter capsule 2 cannot be effectively observed when it is transparent, as is the case with existing catheter capsules.

[0114] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the video head image acquisition mechanism includes a sampling link 15 that can be embedded in the conduit body 1 and a link video head 14 located at the head end of the sampling link 15. The length of the sampling link 15 is greater than the length of the conduit body 1. The sampling link 15 allows the link video head 14 to pass through the end hole 54 of the conduit body, or the sampling link 15 allows the link video head 14 to be withdrawn from the conduit body 1. The link video head 14 can be electrically connected to the link video output connector 16 through the link video cable 17 embedded in the sampling link 15.

[0115] In this embodiment of the invention, the linkage video head 14 is located at the end of the sampling linkage 15. The linkage video head 14 can adopt a commonly used video image sampling method such as a camera; the specific form can be selected as needed and will not be elaborated here. Generally, the length of the sampling linkage 15 is greater than the length of the conduit body 1, so that the linkage video head 14 can pass through the head end of the conduit body 1, such as... Figure 3 and Figure 4 As shown. The outer diameter of the sampling link 15 is generally smaller than the inner diameter of the conduit body 1. The position of the link video head 14 can be adjusted by the sampling link 15, such as by passing the link video head 14 out of the end hole 54 of the conduit body, or by removing the link video head 14 from the conduit body 1.

[0116] The main body of the linkage video cable 17 is embedded inside the sampling linkage 15, and the linkage video output connector 16 is located outside the sampling linkage 15. That is, the linkage video cable 17 has a part located outside the sampling linkage 15. The linkage video output connector 16 can be electrically connected to a video display device, such as a display screen. The specific form of the linkage video output connector 16 is related to the type of video display device. For example, it can be a USB connector or other commonly used connector types that can transmit video and images. The specific type can be selected according to the needs, which will not be elaborated here.

[0117] Furthermore, a video conduit connector is provided at the end of the sampling rod 15. The conduit breathing connector is detachably connected to the conduit body 1. When the conduit breathing connector is detached from the conduit body 1, the video conduit connector is adapted to the tail end of the conduit body 1. The video conduit connector is detachably connected to the tail end of the conduit body 1.

[0118] After the video catheter connector is adapted and connected to the catheter body 1, the sampling rod 15 can be inserted into the catheter body 1; the video catheter connector is connected to the catheter body 1, and the catheter body 1 can be adapted and connected to the ventilator / anesthesia machine through the video catheter connector;

[0119] The sampling link 15 includes several evenly distributed link pieces 26, and a gas flow groove that allows gas to pass through can be formed between adjacent link pieces 26; the gas enters the conduit body 1 through the video conduit connector, the gas in the conduit body 1 flows under the guidance of the gas flow groove, and can be discharged through the side ventilation part of the conduit and the end hole 54 of the conduit body.

[0120] In this embodiment of the invention, when a video catheter connector is provided at the end of the sampling rod 15, the catheter breathing connector and the catheter body 1 need to be detachably connected. That is, when the sampling rod 15 is placed inside the catheter body 1, the catheter connector needs to be separated from the catheter body 1 so that the sampling rod 15 can be adapted and connected to the tail end of the catheter body 1 through the video catheter connector. The video catheter connector and the connecting rod video head 14 are located at opposite 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 detached so that the catheter breathing connector can be reconnected to the tail end of the catheter body 1 to achieve the connection between the catheter body 1 and the ventilator / anesthesia machine after the catheter is inserted.

[0121] As explained above, when the sampling rod 15 is used with the catheter body 1, the sampling rod 15 needs to be inserted into the catheter body 1. In order to achieve ventilation during the intubation process, the video catheter connector can be connected to the catheter body 1, and the catheter body 1 can be adapted to be connected to the ventilator / anesthesia machine through the video catheter connector.

[0122] In practical implementation, the sampling rod 15 has multiple evenly distributed connecting pieces 26. The space between adjacent connecting pieces 26 can form a gas flow groove. When the sampling rod 15 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 delivered into the catheter body 1 by the ventilator / anesthesia machine through the video catheter connector can flow through the gas flow channel within the catheter body 1 and be discharged through the ventilation section on the side of the catheter and the end hole 54 of the catheter body, thereby achieving respiratory support during the intubation process of the catheter body 1. During the intubation process, the position status during the intubation process can be observed in real time using the connecting rod video head 14. A rod body hole 27 is provided in the sampling rod 15, and the connecting rod video cable 17 can be embedded in the sampling rod 15 through the rod body hole 27 to achieve connection and cooperation with the connecting rod video head 14.

[0123] like Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the video conduit connector includes a video connection tube 21 that can be adapted to the conduit body 1, an adjustment transition tube 20 that is adapted to the video connection tube 21, and a video ventilation tube 18 that is adapted to the adjustment transition tube 20.

[0124] The tail end of the catheter body 1 can be fitted onto the video connection tube 21. The inner wall of the adjusting transition tube 20 is provided with an adjusting internal thread 30. It can be adapted and connected to a ventilator / anesthesia machine through the video ventilation tube 18. The video ventilation tube 18 can be connected to the video connection tube 21 through the adjusting transition tube 20. The adjusting transition tube 20 can rotate relative to the video connection tube 21. The video ventilation tube 18 can rotate relative to the adjusting transition tube 20.

[0125] An external thread 25, which can be adapted to the transition adjustment internal thread 30, is provided on the outer wall of the sampling rod 15. The sampling rod 15 passes through the video ventilation pipe 18, the adjustment transition pipe 20, and the video connection pipe 21 in sequence before entering the conduit body 1. The position of the sampling rod 15 in the conduit body 1 can be adjusted by the cooperation between the external thread 25 and the transition adjustment internal thread 30.

[0126] In this embodiment of the invention, the video connection tube 21 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 21. As can be seen from the above description, after the catheter body 1 is sleeved on the video connection tube 21, the catheter body 1 and the video connection tube 21 can be disassembled and separated so that the catheter body 1 can be reconnected and fitted with the catheter breathing connector in the future.

[0127] The inner wall of the adjusting transition tube 20 has an adjusting internal thread 30, which allows it to be adapted to connect with a ventilator / anesthesia machine via the video ventilation tube 18. This means the size and shape of the adapting ventilation tube 18 are compatible with the ventilator / anesthesia machine, fulfilling the connection requirements. The video ventilation tube 18 can communicate with the video connection tube 21 via the adjusting transition tube 20. Therefore, when the video connection tube 21 is connected to the catheter body 1, the video ventilation tube 18 can also communicate with the catheter body 1. After the video ventilation tube 18 is adapted to connect with the ventilator / anesthesia machine, the ventilator / anesthesia machine can deliver the required gas into the catheter body 1 through the video ventilation tube 18, the adjusting transition tube 20, and the video connection tube 21. In practice, the adjusting transition tube 20 and the video connection tube 21 can rotate relative to each other, and the video ventilation tube 18 and the adjusting transition tube 20 can also rotate relative to each other.

[0128] An external thread 25 is provided on the outer wall of the sampling link 15. The external thread 25 can be adapted to the transition adjustment internal thread 30. In specific implementation, the external thread 25 can be provided in the area at the tail of the sampling link 15. By cooperating with the transition adjustment internal thread 30, the position of the sampling link 15 can be finely adjusted. Since the adjustment transition tube 20 can rotate relative to the video connection tube 21, when the transition adjustment link 20 rotates, by driving the adjustment transition tube 20 to rotate relative to the video connection tube 21, the position of the sampling link 15 within the conduit body 1 can be finely adjusted.

[0129] In specific implementation, a video ventilation line side tube 22 is also provided on the video ventilation connecting pipe 18. The video ventilation line side tube 22 is connected to the video ventilation connecting pipe 18, located on one side of the video ventilation connecting pipe 18, and its length direction is perpendicular to the video ventilation connecting pipe 18. A side tube positioning seal 29 is provided inside the video ventilation line side tube 22. The linkage video output connector 16 is located outside the video ventilation connecting pipe 18, that is, the linkage video cable 17 passes through the video ventilation line side tube 22, and the side tube positioning seal 29 is used to seal the linkage video cable 17 and the video ventilation line side tube 22.

[0130] To enable the video vent pipe 18 to rotate relative to the adjusting transition pipe 20, the video vent pipe 18 is connected to the adjusting transition pipe 20 via a rotating connecting first ring 23; similarly, the adjusting transition pipe 20 is connected to the video connection pipe 21 via a rotating connecting second ring 24. Specifically, the rotating connecting first ring 23 and the rotating connecting second ring 24 adopt the same structural form. A vent pipe cavity 28 is provided inside the video vent pipe 18, and a video vent pipe annular groove is provided in the lower part 31 of the vent pipe 18. The outer diameter of the lower part 31 is smaller than the outer diameter of the upper part of the video vent pipe 18. A rotating connecting first groove 32 is provided in the upper part of the adjusting transition pipe 20, allowing the lower part of the video vent pipe 18 to be embedded within the adjusting transition pipe 20, and after the video vent pipe 18 is embedded in the adjusting transition pipe 20, the video vent pipe annular groove corresponds precisely to the rotating connecting first groove 32.

[0131] The specific structures of the rotating connection of the first ring 23 and the rotating connection of the second ring 24 are as follows: Figure 12 As shown, specifically, it includes an annular body 38, which is arc-shaped. Annular end grooves 39 are located at both ends of the annular body 38, with the end grooves 39 on the outer side. Annular steps 40 are located on the inner side of both ends of the annular body 38. The annular body 38 can be fitted into the first rotatable connection groove 32 and simultaneously into the annular groove of the adaptable ventilator. The arc length of the first rotatable connection groove 32 is slightly greater than the arc length of the annular body 38, allowing the annular body 38 to connect to both ends of the first rotatable connection groove 32 via the annular end grooves 39, preventing the annular body 38 from separating from the first rotatable connection groove 32. The annular body 38 can be fitted into the annular groove of the adaptable ventilator via the annular steps 40, enabling the video ventilator 38 and the adjustment transition pipe 20 to rotate around the annular body 38, achieving relative rotation between the video ventilator 38 and the adjustment transition pipe 20.

[0132] A second rotatable groove 33 is provided at the lower part of the adjusting transition pipe 20, penetrating the pipe wall of the adjusting transition pipe 20. Similarly, the first rotatable groove 32 also penetrates the corresponding pipe wall of the adjusting transition pipe 20. The end of the video connecting pipe 21 can extend into the adjusting transition pipe 20. A rotating positioning groove 36, which is annular, is provided on the video connecting pipe 21. When the video connecting pipe 21 is embedded in the adjusting transition pipe 20, the rotating positioning groove 36 corresponds directly to the second rotatable groove 33. This allows the second rotatable ring 24 to engage with the second rotatable groove 33 and the rotating positioning groove 36, enabling the adjusting transition pipe 20 and the video connecting pipe 21 to rotate around the second rotatable ring 24, thus achieving relative rotation between the adjusting transition pipe 20 and the video connecting pipe 21. The specific connection and engagement process with the second rotatable ring 24 can be found in the above description and will not be repeated here.

[0133] In specific implementation, a limiting block 37 is installed inside the video connection tube 21 to limit the sampling rod 15. A video connection tube end plate 35 is also installed on the video connection tube 21, symmetrically distributed on its outer wall. The end plates 35 limit the connection between the conduit body 1 and the video connection tube 21 and facilitate handling of the video connection tube 21.

[0134] like Figure 13 , Figure 14 , Figure 15 , Figure 16 and Figure 17 As shown, the video image acquisition mechanism includes a cable video head 43 located inside the cavity of the conduit body 1 and a connecting cable 41 electrically connected to the cable video head 43. A cable hole is provided inside the wall of the conduit body 1 to allow the connecting cable 41 to pass through. The cable hole and the ventilation part on the side of the conduit body are respectively located on opposite sides of the conduit body 1. The connecting cable 41 is also electrically connected to a cable video connector 42, which is located outside the conduit body 1. Pulling the connecting cable 41 can adjust the position of the cable video head 43 inside the conduit body 1.

[0135] Specifically, compared to the aforementioned video image acquisition mechanism which uses sampling link 15 and link video head 14, the line video head 43 is placed inside the cavity of the conduit body 1. The specific type of the line video head 43 can be found in the description of link video head 14; any type capable of acquiring video images is acceptable and will not be elaborated upon here. The connecting line 41 can be a commonly used cable. The line video connector 42 is electrically connected to the line video head 43 via the connecting line 41. The specific details of the line video connector 42 can be found in the description of link video output connector 16. The line video connector 42 can transmit the video and images acquired by the line video head 43; this will not be elaborated upon here.

[0136] In this embodiment of the invention, a cable hole is provided inside the wall of the conduit body 1, allowing the connecting cable 41 to pass through. The cable video connector 42 is located outside the conduit body 1. Therefore, the main part of the connecting cable 41 is located inside the wall of the conduit body 1 through the cable hole. The part of the connecting cable 41 located outside the tail end of the conduit body 1 is electrically connected to the cable video connector 42. The length of the cable hole is less than the length of the conduit body 1. The cable hole and the side ventilation portion of the conduit body are located on opposite sides of the conduit body 1, respectively. In specific implementation, the cable video connector 43 can be located outside the side ventilation hole 3 inside the conduit body 1, that is, the cable video connector 43 is located between the side ventilation hole 3 and the end hole 54 of the conduit body. The cable video connector 43 can be used to acquire video and images of information in front of the end hole 54 of the conduit body. The specific details of the cable video connector 42 can be referred to the description of the linkage video output connector 16, which will not be repeated here.

[0137] Of course, a structure for limiting the cable video head 43 can also be provided inside the conduit body 1 to prevent the cable video head 43 from moving away from the side vent 3. By pulling the connecting cable 41, the cable video head 43 can also be aligned with the side vent 3 to collect video and image information of the corresponding part. Specifically, a base guide limiting groove 44 is provided inside the conduit body 1. The video head base 55 of the cable video head 43 can be adapted to the base guide limiting groove 44, so that the cable video head 43 is installed in the base guide limiting groove 44 through the video head base 55. The video head base 55 can move within the base guide limiting groove 44. By matching the length of the base guide limiting groove 44 with the video head base 55, the cable video head 43 can be limited inside the conduit body 1. When the cable video head 43 is installed inside the conduit body 1 through the video head base 55, the cable video head 43 is generally attached to the inner wall of the conduit body 1.

[0138] When the video image acquisition mechanism uses sampling link 15 in conjunction with link video head 14, the video image acquisition mechanism can be reused, meaning it can be used with different conduit bodies 1. However, when the video image acquisition mechanism uses line video head 43 in conjunction with connecting line 41, the line video head 43 remains inside the conduit body 1 after insertion, meaning the line video head 43 generally cannot be reused in this case.

[0139] In addition, a fixed camera can be embedded in the inner arc of the tip of the catheter body 1. The camera can be enclosed by the catheter capsule 2, thereby preventing contamination of the camera surface by blood or other substances during insertion and use, and improving the stability and reliability of the recording process. The fixed camera can be located inside the lower edge of the catheter capsule 2, or on the outer ring of the catheter capsule 2 near the ventilation section on the side of the catheter, as long as it can effectively achieve video and image acquisition within the required range during the insertion process and post-insertion use of the catheter body 1.

[0140] Of course, in specific implementation, the video image acquisition mechanism can also adopt other structural forms, as long as it can meet the needs of video image acquisition during and after catheter insertion. The specific selection can be made according to the needs of those in this technical field, and will not be elaborated here.

Claims

1. A single-lumen, single-bag, single / double-lung ventilation catheter, comprising a catheter body (1) and a catheter breathing connector disposed at the tail end of the catheter body (1), wherein the head end of the catheter body (1) has a catheter body end hole (54), the catheter body end hole (54) being able to communicate with the catheter breathing connector through the catheter body (1); characterized in that: A catheter side ventilation section and a catheter balloon (2) adapted to the catheter side ventilation section are provided at the head of the catheter body (1). The catheter side ventilation section is connected to the cavity inside the catheter body (1), and the catheter side ventilation section is located inside the arc-shaped head end of the catheter body (1). The catheter balloon (2) is located at the head of the catheter body (1), and the catheter balloon (2) covers the corresponding outer wall of the head of the catheter body (1) except for the catheter side ventilation section; the length direction of the catheter balloon (2) is consistent with the length direction of the catheter body (1), the length of the catheter balloon (2) is greater than the length of the catheter side ventilation section, and the catheter side ventilation section is located between the two ends of the catheter balloon (2), and the lower edge of the catheter balloon (2) is located between the catheter side ventilation section and the catheter end hole (54); A dental pad mechanism for opening the oral cavity is provided on the catheter body (1), and the dental pad mechanism can be locked on the catheter body (1); when the dental pad mechanism is released from the locking state of the catheter body (1), the catheter body (1) and the dental pad mechanism can move relative to each other; The venting section on the side of the conduit includes one or more side vents (3), and the side vents (3) penetrate the corresponding side wall of the conduit body (1); The length of the ventilation section on the side of the catheter is 1.5cm to 3cm; The distance between the lower edge of the catheter balloon (2) and the end hole (54) of the catheter body is 0.8cm to 2cm; the distance between the upper edge of the catheter balloon (2) and the outer edge of the ventilation section on the side of the catheter is 0.8cm to 2cm. It also includes a balloon inflation / deflation connecting pipe (5) for inflating and deflating the balloon (2) and an inflation / deflation sealing valve (4) adapted to and connected to the balloon inflation / deflation connecting pipe (5); the end hole (54) of the balloon is obliquely wedge-shaped or flat at the head end of the balloon (1). When the end hole (54) of the catheter body is wedge-shaped at the head end of the catheter body (1), the inclined surface formed by the end hole (54) of the catheter body is located on the same side of the catheter body (1) as the ventilation part on the side of the catheter. When the end hole (54) of the catheter body (1) is flat, an end vent hole (45) is provided at the end of the catheter body (1). The end vent hole (45) penetrates the wall of the catheter body (1). The end vent hole (45) is located between the lower edge of the catheter capsule (2) and the end hole (54), and the end vent hole (45) and the ventilation part on the side of the catheter are located on the same side of the catheter body (1).

2. The single-lumen single-bag single / double-lung ventilation catheter according to claim 1, characterized in that: The catheter breathing connector includes a connector catheter tube (13) that can be adapted to the tail end of the catheter body (1) and a connector connecting sleeve (7) for adapting to the ventilator / anesthesia machine. The tail end of the catheter body (1) can be fitted onto the connector catheter tube (13), and the connector connecting sleeve (7) can be fitted onto the connector catheter tube (13). The connector connecting sleeve (7) can communicate with the catheter body (1) through the connector catheter tube (13), and the connector connecting sleeve (7) can rotate relative to the connector catheter tube (13) and the catheter body (1).

3. The single-lumen single-bag single / double-lung ventilation catheter according to claim 2, characterized in that: The connector conduit (13) is provided with a connector conduit protrusion ring (12), and a connector connecting sleeve groove (49) is provided in the pipe wall of the connector connecting sleeve (7) to allow the connector conduit (13) to be embedded. When the connector sleeve (7) is fitted onto the connector conduit (13), the connector conduit (13) is embedded in the connector sleeve groove (49), and the connector conduit protrusion (12) can be embedded in the connector sleeve positioning groove (46) inside the connector sleeve (7). With the cooperation of the connector conduit protrusion (12) and the connector sleeve positioning groove (46), the connector sleeve (7) can rotate on the connector conduit (13).

4. The single-lumen single-bag single / double-lung ventilation catheter according to claim 1, characterized in that: The dental pad mechanism includes a dental pad locking sleeve (19) that can be fitted onto the catheter body (1) and a locking adjustment tube (6) that can be fitted onto the catheter body (1) and adapted to be connected with the dental pad locking sleeve (19). A dental pad sleeve (8) for tooth occlusion is fitted onto the locking adjustment tube (6). An internal thread (50) is provided on the inner wall of the locking adjustment pipe (6), and the wall thickness of the locking adjustment pipe (6) gradually changes; an external thread (52) is provided on the outer wall of the tooth pad locking connecting sleeve (19) that can be adapted to the internal thread (50) of the adjustment pipe, the head end of the tooth pad locking connecting sleeve (19) can be inserted into the locking adjustment pipe (6) and tightly connected to the locking adjustment pipe (6), and the tail end of the tooth pad locking connecting sleeve (19) is divided into several connecting locking pieces (51). When the relative movement of the locking adjustment tube (6) and the dental pad locking sleeve (19) causes the connecting locking piece (51) to retract toward the catheter body (1), the dental pad locking sleeve (19) and the catheter body (1) can be locked together; when the relative movement of the locking adjustment tube (6) and the dental pad locking sleeve (19) causes the connecting locking piece (51) to open away from the catheter body (1), the locking state of the dental pad locking sleeve (19) and the catheter body (1) can be released.

5. The single-lumen single-bag single / double-lung ventilation catheter according to claim 1, characterized in that: It also includes a video image acquisition mechanism that can acquire the position and status of the catheter body (1) when in use. The video image acquisition mechanism is adapted and connected to the catheter body (1) and has marking colors on the catheter capsule (2).

6. The single-lumen single-bag single / double-lung ventilation catheter according to claim 5, characterized in that: The video image acquisition mechanism includes a sampling link (15) that can be embedded in the conduit body (1) and a link video head (14) located at the head end of the sampling link (15). The length of the sampling link (15) is greater than the length of the conduit body (1). The link video head (14) can be passed through the end hole (54) of the conduit body through the sampling link (15), or the link video head (14) can be withdrawn from the conduit body (1) through the sampling link (15). The link video head (14) can be electrically connected to the link video output connector (16) through the link video line (17) embedded in the sampling link (15).

7. The single-lumen single-bag single / double-lung ventilation catheter according to claim 6, characterized in that: A video conduit connector is provided at the end of the sampling link (15). The conduit breathing connector is detachably connected to the conduit body (1). When the conduit breathing connector is detached from the conduit body (1), the video conduit connector is adapted to the tail end of the conduit body (1). The video conduit connector is detachably connected to the tail end of the conduit body (1). After the video catheter connector is adapted and connected to the catheter body (1), the sampling rod (15) can be inserted into the catheter body (1); the video catheter connector is connected to the catheter body (1), and the catheter body (1) can be adapted and connected to the ventilator / anesthesia machine through the video catheter connector; The sampling link (15) includes several evenly distributed link pieces (26), and a gas flow groove that allows gas to pass through can be formed between adjacent link pieces (26); the gas enters the conduit body (1) through the video conduit connector, the gas in the conduit body (1) flows under the guidance of the gas flow groove, and can be discharged through the side ventilation part of the conduit and the end hole (54) of the conduit body.

8. The single-lumen single-balloon single / double-lung ventilation catheter according to claim 7, characterized in that: The video conduit connector includes a video connection tube (21) that can be adapted to the conduit body (1), an adjustment transition tube (20) that can be adapted to the video connection tube (21), and a video ventilation tube (18) that can be adapted to the adjustment transition tube (20). The tail end of the catheter body (1) can be fitted onto the video connection tube (21). The inner wall of the adjustment transition tube (20) is provided with an adjustment internal thread (30). The video ventilation tube (18) can be adapted to connect with the ventilator / anesthesia machine. The video ventilation tube (18) can be connected to the video connection tube (21) through the adjustment transition tube (20). The adjustment transition tube (20) can rotate relative to the video connection tube (21). The video ventilation tube (18) can rotate relative to the adjustment transition tube (20). An external thread (25) that can be adapted to the transition adjustment internal thread (30) is provided on the outer wall of the sampling link (15). The sampling link (15) passes through the video ventilation pipe (18), the adjustment transition pipe (20), and the video connection pipe (21) in sequence before entering the conduit body (1). The position of the sampling link (15) in the conduit body (1) can be adjusted by the cooperation between the external thread (25) and the transition adjustment internal thread (30).

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