A video cable external ventilation catheter

Abstract

The present invention discloses a video cable external ventilation catheter, comprising a bronchial catheter or a tracheal catheter, a video cable and a video catheter connecting mechanism. The video catheter connecting mechanism is provided with a video connecting mechanism that can temporarily lock the position of the rear section of the video cable. By loosening the video catheter connecting mechanism, the tail of the video cable can be manipulated to make the video cable move forward, backward or rotate independently. The video catheter connecting mechanism is also provided with a catheter connecting mechanism and a ventilation catheter (bronchial catheter or tracheal catheter) that is movably connected, which can temporarily lock the position of a correctly assembled ventilation catheter. By loosening the catheter connecting mechanism, the video catheter connecting mechanism can be manipulated to separate from the ventilation catheter. The video cable external ventilation catheter provided by the present invention can make full use of the space in the patient's trachea, reduce the occupation of the ventilation cavity by the video cable, reduce the airway pressure of ventilation, can adjust the video cable to inspect and position at different depths in the airway, has a simple structure and wide applicability.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a video cable external ventilation catheter. Background Art

[0002] Visual bronchial tubes are widely used in anesthesia for thoracic surgery. Their function is to isolate the left and right lungs, achieve separate ventilation of the left and right lungs, and safely and effectively implement single-lung ventilation of the main lung, thus providing conditions for the operation on the secondary side. However, the cost is high and it is difficult to promote it widely in clinical practice.

[0003] However, its disadvantages are also very significant: (1) The video field of view is blocked by the main tube tip, and only the part of the airway lumen in front of the auxiliary tube can be observed, and the airway lumen cannot be observed further; (2) The video cable is fixed in the tube wall, which greatly occupies the cross-section of the bronchial catheter, significantly reduces the effective ventilation area, and significantly increases the ventilation resistance, which is particularly serious in small-sized bronchial catheters; (3) The video cable is buried in the narrow video cavity, which is more difficult to process, reduces the production process, and increases the production cost.

[0004] There is an urgent need in clinical practice for a visual bronchial tube that can provide the largest ventilation lumen during single-lung ventilation, minimize airway pressure, and can be used even in small-sized bronchial tubes; it can effectively reduce production costs and ease the difficulty of promotion.

[0005] During clinical airway intervention surgery under general anesthesia with endotracheal tube, a video endoscope and surgical tools must be inserted through the endotracheal tube at the same time. The surgical tools include cutting tools and coagulation tools. No matter which surgical tools are used, they must be operated with the assistance of a video endoscope. Due to the limited lumen of the endotracheal tube during surgery, the video endoscope occupies part of the space, and only one surgical tool can be placed in the remaining space. The surgical tools need to be switched constantly during the surgery. Because only one operating tool can be used, only extremely simple surgeries can be performed during airway intervention.

[0006] There is a clinical need for a visual endotracheal tube. During airway intervention surgery, two or more surgical tools can be simultaneously inserted through the inner lumen of the endotracheal tube to avoid constant insertion and removal of surgical tools, which not only saves operation time, but also reduces surgical bleeding and improves surgical safety. Summary of the invention

[0007] The invention aims to provide a video cable external ventilation catheter with simple structure and strong applicability.

[0008] Based on the above problems, the technical solution provided by the present invention is:

[0009] The video cable external ventilation catheter comprises a ventilation catheter, a video cable and a video catheter connection mechanism. The video catheter connection mechanism is provided with a video connection mechanism and a video cable movably connected, and the video connection mechanism can temporarily lock the position of the rear section of the video cable. By loosening the video catheter connection mechanism, the tail of the video cable can be manipulated to make the video cable independently move forward, backward, rotate or escape from the video catheter connection mechanism. The video catheter connection mechanism is also provided with a catheter connection mechanism that can lock the position of the ventilation catheter; the head end of the video cable is close to the head end of the ventilation catheter.

[0010] Furthermore, the video cable external ventilation catheter also includes a display screen and a power supply electrically connected to the video cable. The video cable is provided with an adjuster to bend the head end of the video cable, and the operating end of the adjuster is arranged at the tail end of the video cable.

[0011] Furthermore, a hollow cavity that passes through from head to tail is provided in the video cable, and an interface tube is provided at the tail of the hollow cavity to match and connect with a negative pressure suction tube or an oxygen supply tube.

[0012] Furthermore, the video connection mechanism includes a video fixing tube, a cable locking arm and a cable locking nut, and the video cable is nested in the video fixing tube. The outer wall of the cable locking arm and the inner wall of the cable locking nut are provided with matching threads, and the cable locking nut is sleeved outside the cable locking arm. Tightening the cable locking nut can tighten the cable locking arm to lock the position of the video cable and the video catheter connection mechanism, and loosening the cable locking nut can loosen the cable locking arm to allow the video cable to move forward, backward, rotate or escape from the video catheter connection mechanism in the video fixing tube.

[0013] Furthermore, the catheter connecting mechanism includes a catheter fixing tube, a catheter locking arm and a catheter locking nut, and the ventilation catheter is nested in the catheter fixing tube; the outer wall of the catheter locking arm and the inner wall of the catheter locking nut are provided with matching threads, and the catheter locking nut is sleeved outside the catheter locking arm, and tightening the catheter locking nut can tighten the catheter locking arm to lock the position of the ventilation catheter and the video catheter connecting mechanism, and loosening the catheter locking nut can loosen the catheter locking arm, so that the video catheter connecting mechanism can be manipulated to separate from the ventilation catheter.

[0014] Furthermore, a side hole is provided at the front end of the ventilation catheter, and a fixing wire is buried through the side hole to temporarily fix or loosen the video cable.

[0015] Furthermore, the middle section of the fixing line is nested in the ventilation catheter lumen, and a collar is arranged at one end of the fixing line corresponding to the side hole position, and the collar is sleeved on the outer wall of the video cable. Tightening the collar can lock the video cable outside the side hole of the ventilation catheter lumen, and loosening the collar can loosen the video cable.

[0016] Furthermore, the other end of the fixing line is arranged outside the tail interface of the ventilation tube, and a fixing line operating body is arranged outside the tail interface of the ventilation tube and connected to the other end of the fixing line. Manipulating the operating body can pull or loosen the fixing line to tighten or loosen the loop.

[0017] Furthermore, the ventilation catheter includes a bronchial catheter and a tracheal catheter.

[0018] Furthermore, when the ventilation catheter is set as a bronchial catheter, the side hole is set at the front end opening of the bronchial catheter secondary lumen, the middle section of the fixed line is nested in the bronchial catheter secondary lumen, the other end of the fixed line is set outside the tail interface of the bronchial catheter secondary lumen, and the fixed line operating body is set outside the tail interface of the bronchial catheter secondary lumen.

[0019] Furthermore, when the ventilation tube is set as a tracheal tube, one side of the tracheal tube tail interface is in sealed communication with the tracheal tube lumen, and the other side is provided with at least two open tubes, one of which is set as a ventilation interface connected to a ventilator, and the other open tubes are set as operation interfaces, and the operation interfaces are provided with sealing membrane rings and sealing covers. Compared with the prior art, the advantages of the present invention are:

[0020] 1. The video cable is arranged on the outside of the ventilation tube wall. When in use, it is in the gap between the inner wall of the airway and the outer wall of the ventilation tube, which makes full use of the airway lumen, avoids the occupation of the ventilation tube lumen by the video cable, increases the inner diameter of the ventilation lumen, and reduces the airway pressure.

[0021] 2. The video cable and the ventilation tube are flexibly connected, so that the video cable can move freely and can perform deep airway inspection and operations during ventilation through the ventilation tube, which increases the use scenarios of the video cable and solves more clinical needs.

[0022] 3. The video cable is equipped with a hollow cavity, which can be used to suction sputum or supply oxygen deep in the airway; the hollow cavity can be used to clean the head end of the video cable.

[0023] 4. The assembly process of the external video cable and the ventilation catheter is simple, which reduces the cost of the visual ventilation catheter and reduces the difficulty of promoting the visual ventilation catheter.

[0024] 5. The external video cable can be disassembled and sterilized repeatedly, which can further reduce the cost of using the visual ventilation catheter and benefit patients.

[0025] 6. Through the setting of the fixed line, the locking of the head end of the video cable can be flexibly operated, so that the synchronous operation of the ventilation catheter and the video cable can be easily achieved, which reduces the difficulty of use and increases the feasibility of promotion.

[0026] 7. An adjuster is set at the tail of the external video cable, which can make various bending adjustments to the video cable and complete various difficult inspections and operations.

[0027] 8. In airway intervention surgery, two or more surgical tools can be placed through the lumen of the endotracheal tube at the same time, avoiding the need to constantly insert and remove surgical tools, and allowing for more complex surgeries. This saves surgical time, reduces surgical bleeding, and improves surgical safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a video cable external ventilation catheter of the present invention is a video cable external bronchial catheter;

[0030] Figure 2 It is a structural schematic diagram of the video catheter connection mechanism of the present invention;

[0031] Figure 3 It is a schematic diagram of another embodiment of the video fixed tube of the present invention.

[0032] Figure 4 The present invention is a structural schematic diagram of a video cable external ventilation catheter, which is a video cable external tracheal catheter.

[0033] Figure 5 for Figure 4 Video cable schematic diagram of the optimized structure of the tail interface of the external endotracheal tube.

[0034] in:

[0035] 1. Video cable; 1-1. Regulator;

[0036] 2. Video connection mechanism; 2-1. Video fixing tube; 2-2. Cable locking arm; 2-3. Cable locking nut;

[0037] 3. Catheter connection mechanism; 3-1. Catheter fixing tube; 3-2. Catheter locking arm; 3-3. Cable locking nut;

[0038] 4. Ventilation catheter; 4-A. Bronchial catheter; 4-B. Tracheal catheter; 4-B-1. Ventilation interface; 4-B-2. Operation interface; 4-B-3. Sealing membrane ring; 4-B-4. Cover; 4-1. Side hole; 4-2. Fixing line; 4-3. Ring; 4-4. Operation body; 4-5. Connecting shaft; 4-6. First clamping body; 4-7. Second clamping body. DETAILED DESCRIPTION

[0039] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present invention and are not limited to the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0040] A video cable external ventilatory catheter, wherein the ventilatory catheter 4 includes a bronchial catheter 4-A and a tracheal catheter 4-B. The bronchial catheter 4-A refers to a double-lumen bronchial catheter, and the tracheal catheter 4-B refers to a single-lumen tracheal catheter, which are commonly used clinical airway management tools. Among them, the bronchial catheter 4-A is more complicated, and this embodiment is based on the video cable external bronchial catheter and is first described.

[0041] See also Figure 1 , is a structural schematic diagram of embodiment 1 of the present invention, which provides a video cable external ventilation catheter, including a ventilation catheter 4 (in this embodiment, a bronchial catheter 4-A), a video cable 1 and a video catheter connecting mechanism, wherein the video catheter connecting mechanism is provided with a video connecting mechanism 2 which can be movably connected with the video cable 1. The video connecting mechanism 2 can temporarily lock the position of the rear section of the video cable 1, and by loosening the video catheter connecting mechanism 2, the tail of the video cable 1 can be manipulated to make the video cable 1 independently move forward, backward, rotate or escape from the video catheter connecting mechanism. The video catheter connecting mechanism is also provided with a catheter connecting mechanism 3 which can lock the position of the ventilation catheter 4 (in this embodiment, a bronchial catheter 4-A); the head end of the video cable 1 is close to the head end of the ventilation catheter 4 (in this embodiment, a bronchial catheter 4-A).

[0042] Before use, the locking catheter connection mechanism 3 temporarily locks the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) so that the rear section of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) and the video catheter connection mechanism are locked in position.

[0043] The video connection mechanism 2 is released, and the tail of the video cable 1 is adjusted and manipulated to make the video cable 1 move forward, backward or rotate, so that the length of the video cable 1 is adapted to the ventilation catheter 4 (the bronchial catheter 4-A in this embodiment), and the head end of the video cable 1 is close to the head end of the ventilation catheter 4 (the bronchial catheter 4-A in this embodiment). At this time, the video connection mechanism 2 is temporarily locked to lock the position of the video catheter connection mechanism and the rear section of the video cable 1.

[0044] At this time, the rear section of the video cable 1 and the rear section of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) are locked in the video connection mechanism 2 and the catheter connection mechanism 3 through the video catheter connection mechanism, so that the video catheter connection mechanism, the video cable 1 and the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) are locked into an integrated structure. By rotating the ventilation catheter 4 (bronchial catheter 4-A in this embodiment), the video cable 1 and the video catheter connection mechanism can be driven to rotate synchronously around the ventilation catheter 4 (bronchial catheter 4-A in this embodiment). Of course, it should be emphasized here that the correct positional relationship between the video catheter connection mechanism, the video cable 1 and the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) at this time is: the rear section of the video cable 1 and the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) are locked into one through the video catheter connection mechanism, and the head end of the video cable 1 and the head end of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) are close. During intubation, the video catheter connection mechanism, the video cable 1 and the rear structure of the ventilation catheter 4 (the bronchial catheter 4-A in this embodiment) can be held to smoothly place the head of the video cable 1 and the ventilation catheter 4 (the bronchial catheter 4-A in this embodiment) whose head ends are aligned together into the glottis of the patient and into the airway. The video cable 1 and the rear structure of the ventilation catheter 4 (the bronchial catheter 4-A in this embodiment) can be held to advance, retreat or rotate the video catheter connection mechanism in the airway, so that the video cable 1 and the ventilation catheter 4 (the bronchial catheter 4-A in this embodiment) can be advanced, retreated or rotated in the same direction.

[0045] When the video cable 1 and the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) enter the patient's airway, the display screen and power supply electrically connected to the video cable 1 can collect the video in the patient's airway at the head end of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment). Hold the video catheter connection mechanism, the video cable 1 and the rear structure of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment), and slowly advance the video cable 1 and the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) under video observation, so that the head of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) is located in the trachea close to the carina of the patient. Rotate the video cable 1 and the rear structure of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) so that the head of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) corresponds correctly to the direction of the bronchial opening to be inserted.

[0046] At this time, the video connection mechanism 2 is loosened to allow the video cable 1 to move independently. The video cable 1 is kept in place, and the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) is slowly advanced to allow the tip of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) to enter the corresponding bronchial cavity to an appropriate depth.

[0047] At this time, the ventilation tube 4 (bronchial tube 4-A in this embodiment) and the dental pad can be fixed and adhered to the upper incisor position of the patient with adhesive tape. The ventilation tube 4 (bronchial tube 4-A in this embodiment) and the video tube connection mechanism are kept in place, and the video cable 1 is slowly rotated, advanced or retreated, and the video cable 1 can be used to observe and diagnose the condition in the patient's airway.

[0048] During surgical anesthesia, the operations of inflating and deflating the airbag of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment), deflation of the lung, inflating the lung, and single-lung ventilation do not change due to the setting of the video cable 1, so they are no longer described here. However, it is worth noting that when the device implements single-lung ventilation or double-lung ventilation, the video cable 1 is located in the gap between the inner wall of the patient's airway and the outer wall of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment). When the existing ventilation catheter 4 (bronchial catheter 4-A in this embodiment) is ventilated, the gap is idle. By using the product of the present invention, the cavity is fully utilized, the occupation of the ventilation lumen of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) by the video cable is avoided, and the inner diameter of the ventilation cavity is increased without increasing the patient's intubation damage and risk, thereby reducing the airway pressure. The ventilation catheter 4 (bronchial catheter 4-A in this embodiment) has obvious advantages in implementing single-lung ventilation, especially in patients with high airway pressure such as COPD, pulmonary fibrosis, pulmonary hypertension and small-sized bronchial catheters, which can significantly reduce airway pressure and has significant advantages.

[0049] When the video cable 1 reaches the appropriate position, the video connection mechanism 2 can be locked again to fix the head end of the video cable 1 at the position for continuous observation. When the observation position needs to be adjusted again, the video connection mechanism 2 can be released again to adjust the position of the video cable 1 again.

[0050] When the surgical anesthesia is over and the patient is well awake, the airbag of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) is evacuated to remove the ventilation catheter 4 (bronchial catheter 4-A in this embodiment), the video cable 1 and the video catheter connection mechanism from the patient's airway. The video cable 1 can be separated by loosening the video connection mechanism 2. After cleaning and sterilization, the separated video cable 1 can be used again with a matching ventilation catheter 4 (bronchial catheter 4-A in this embodiment) and a video catheter connection mechanism, which greatly reduces the cost of use.

[0051] The video cable external ventilation catheter also includes a display screen and a power supply that are electrically connected to the video cable 1. After the display screen and the power supply are correctly connected to the video cable 1, the video data of the head of the video cable 1 can be collected. Of course, the video cable 1 has a certain strength to facilitate the hand-held tail operation. The length of the video cable 1 needs to meet the video observation requirements of the corresponding model ventilation catheter 4 (bronchial catheter 4-A in this embodiment). The smaller the outer diameter of the length of the video cable 1, the better, and the thickest outer diameter can exceed 5mm. A light source is provided at the head end of the video cable for video collection illumination. This is common sense of video cables and will not be repeated.

[0052] The video cable 1 is provided with an adjuster 1-1 which can bend the head end of the video cable 1, and the operating end of the adjuster 1-1 is arranged at the tail of the video cable 1. Thus, by manipulating the adjuster 1-1 arranged at the tail of the video cable 1, the direction of the head end of the video cable 1 can be changed, and in cooperation with the rotating video cable 1, the head end of the video cable 1 can be bent to point to any direction, guiding the video cable 1 to advance into the targeted airway. This adjustment method is very common in video endoscopes, such as gastroenteroscopy and bronchoscope, and its structure will not be described here.

[0053] A hollow cavity that runs through the head and tail is arranged in the video cable 1, and an interface tube is arranged at the tail of the hollow cavity, and the interface tube can be matched and connected with a negative pressure suction tube and an oxygen supply tube. In this way, by connecting the interface tube with the negative pressure suction tube and the hollow cavity arranged in the video cable 1, accurate sputum suction can be performed in the airway under visual conditions; or physiological saline can be injected through the interface tube and the hollow cavity to dilute the sputum or clean the airway anastomosis. It should be noted that the opening of the hollow cavity at the head of the video cable 1 is preferably arranged slightly behind the video acquisition head. In this way, when the video acquisition head is contaminated with sputum or blood, physiological saline can be injected to clean the video acquisition head, avoiding pulling out the entire video cable 1 to clean the dirt on the video acquisition head, and it is convenient and safe. When the patient's lung function is poor, we can also match and connect the interface tube with the oxygen supply tube to supply oxygen to the lung on the surgical side, increase oxygenation, and improve the safety of the operation.

[0054] like Figure 1 and Figure 2 As shown, the video connection mechanism 2 includes a video fixing tube 2-1, a cable locking arm 2-2 and a cable locking nut 2-3, and the video cable 1 is nested in the video fixing tube 2-1; the outer wall of the cable locking arm 2-2 and the inner wall of the cable locking nut 2-3 are provided with matching threads, and the cable locking nut 2-3 is sleeved outside the cable locking arm 2-2. Tightening the cable locking nut 2-3 can tighten the cable locking arm 2-2 to lock the position of the video cable 1 and the video catheter connection mechanism. Loosening the cable locking nut 2-3 can loosen the cable locking arm 2-2, so that the video cable 1 can move forward, backward or rotate in the video fixing tube 2-1.

[0055] In specific implementation, the inner cavity of the video fixing tube 2-1 is adapted to the shape of the video cable 1, and the inner cavity of the video fixing tube 2-1 is slightly larger than the size of the video cable 1. The inner cavity of the video fixing tube 2-1 and the outer wall of the rear section of the video cable 1 can be coated with a proper amount of lubricating oil to facilitate the movement of the video cable 1. In this embodiment, a crack is set along the longitudinal side wall of the video fixing tube 2-1, and a cable locking arm 2-2 is set on both sides of the tail of the crack. There is also a gap between the two cable locking arms 2-2. The outer walls of the two cable locking arms 2-2 form a cone-shaped column with a gap in the middle. The cone-shaped column is thicker on the side close to the video fixing tube 2-1 and thinner on the side away from the video fixing tube 2-1. The conical cylindrical outer walls on both sides (i.e., the outer walls of the two cable locking arms 2-2) and the inner wall of the cable locking nut 2-3 are provided with matching threads. When the cable locking nut 2-3 is rotated and tightened, the two cable locking arms 2-2 gradually approach each other, so that the video fixing tube 2-1 with a gap can be contracted and become smaller, thereby embracing and fixing the video cable 1 sleeved in the video fixing tube 2-1, and the annular outer wall is evenly stressed, the stress-bearing area is large, and the fixing effect is good.

[0056] Of course, if Figure 3 As shown, the cable locking arm 2-2 can also be arranged at the end opening of the video fixing tube 2-1 along the long axis of the video fixing tube 2-1 to form a continuation of the video fixing tube 2-1. At this time, the cable locking arm 2-2 is arranged in a ring at the end opening of the video fixing tube 2-1, and there can be two, three, or even more. The inner side of the multiple cable locking arms 2-2 forms a continuation of the video fixing tube 2-1 with multiple cracks adapted to the video cable 1. The outer walls of the multiple cable locking arms 2-2 form a conical columnar shape with a thinner end and a thicker bottom. The cable locking nut 2-3 is arranged as a sleeve-like structure, the inner cavity of the sleeve matches the conical columnar shape, and the sleeve outlet can accommodate the passage of the video cable 1. Multiple conical cylindrical outer walls (i.e., the outer walls of the two cable locking arms 2-2) and the inner wall of the cable locking nut 2-3 are provided with matching threads. When the cable locking nut 2-3 is rotated and tightened, the multiple cable locking arms 2-2 gradually approach the axial center, thereby forming an embracing fixation for the video cable 1 sleeved in the multiple cable locking arms 2-2. The outer wall of the video cable 1 is evenly stressed, the stress-bearing area is large, and the fixing effect is good.

[0057] Similar to the video connection mechanism 2, the catheter connection mechanism 3 includes a catheter fixing tube 3-1, a catheter locking arm 3-2 and a catheter locking nut 3-3. The ventilation catheter 4 (bronchial catheter 4-A in this embodiment) can be nested in the catheter fixing tube 3-1; the outer wall of the catheter locking arm 3-2 and the inner wall of the catheter locking nut 3-3 are provided with matching threads, and the catheter locking nut 3-3 is sleeved outside the catheter locking arm 3-2. Tightening the catheter locking nut 3-3 can tighten the catheter locking arm 3-2, so that the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) and the video catheter connection mechanism are locked in position. Loosening the catheter locking nut 3-3 can loosen the catheter locking arm 3-2, and the video catheter connection mechanism can be manipulated to separate from the ventilation catheter 4 (bronchial catheter 4-A in this embodiment). No further details are given here.

[0058] Of course, there are more implementations of the video connection mechanism 2 and the catheter connection mechanism 3, which will not be listed one by one here. It is sufficient as long as the video cable 1 and the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) can be locked or loosened at any time.

[0059] like Figure 1 As shown, in order to further increase the synchronization of the video cable 1 and the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) during intubation, a side hole 4-1 is provided at the front end of the auxiliary tube of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment), and a fixing line 4-2 is buried through the side hole to temporarily fix or loosen the video cable 1. The auxiliary tube of the bronchial catheter 4-A here refers to the shorter ventilation cavity of the double-lumen bronchial catheter. In clinical practice, the longer ventilation cavity of the double-lumen bronchial catheter is often regarded as the main cavity of the double-lumen bronchial catheter.

[0060] The simplest method of setting the fixed line 4-2 is: the head end of the fixed line 4-2 is tied to the head end of the video cable 1, the fixed line 4-2 wire body passes through the auxiliary tube of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment), and the tail end of the fixed line 4-2 exits the tail interface of the auxiliary tube of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) to form an operating end. Choose a thinner wire body with good toughness. Even if the wire body is dragged out of the tail interface of the auxiliary tube of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment), the impact on the sealing of the auxiliary tube of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) connected to the respiratory support device is sufficient to be clinically acceptable. Pull the tail operating end of the fixed line 4-2 to tighten the fixed line 4-2, and the head end of the video cable 1 can be temporarily fixed at the opening of the auxiliary tube head end of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment). Loosen the fixed line 4-2, and the video cable 1 can be operated to drive the fixed line 4-2 to perform various airway operations. However, the disadvantage of this wire binding is that when the video cable 1 penetrates deep into and moves away from the opening of the auxiliary tube head end of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment), the position of the video cable 1 cannot be effectively fixed. At this time, pulling the tail operating end of the fixing line 4-2 to tighten the fixing line 4-2 will cause the head of the video cable 1 to bend and break, which may cause damage to the inner wall of the airway.

[0061] A more effective method for setting the fixing line 4-2 is as follows: the middle section of the fixing line 4-2 is folded back and nested in the auxiliary tube cavity of the ventilation catheter 4 (in this embodiment, the bronchial catheter 4-A), the end of the folded part of the middle section of the fixing line 4-2 is formed into a ring 4-3 through the side hole 4-1, and the ring 4-3 is sleeved on the outer wall of the video cable 1; the two ends of the fixing line 4-2 are formed into the operation end through the interface of the auxiliary tube tail of the ventilation catheter 4 (in this embodiment, the bronchial catheter 4-A), and a thinner wire with good toughness is selected. Even if the wire is dragged out of the interface of the auxiliary tube tail of the ventilation catheter 4 (in this embodiment, the bronchial catheter 4-A), the impact on the sealing of the auxiliary tube tail of the ventilation catheter 4 (in this embodiment, the bronchial catheter 4-A) connected to the respiratory support device is sufficient to be clinically acceptable. Tightening the operation end can make the ring 4-3 smaller, so that the tightening ring of the ring 4-3 is sleeved on the outer wall of the video cable 1, thereby forming a fixing effect on the position of the video cable 1. When the video cable 1 needs to be operated, the ends of the fixing line 4-2 are loosened to make the ring 4-3 loose and enlarged, and the constraint on the outer wall of the video cable 1 is loosened. The advantage of this method is that no matter where the head of the video cable 1 is in the airway, tightening the operating end can make the ring 4-3 smaller and tighten the ring on the outer wall of the video cable 1, thereby fixing the position of the video cable 1.

[0062] In order to facilitate the operation of tightening and loosening the ring 4-3, the ends of the fixed line 4-2 are arranged outside the tail interface of the auxiliary tube of the ventilation catheter 4 (the bronchial catheter 4-A in this embodiment), and a fixed line operating body 4-4 is arranged outside the tail interface of the auxiliary tube of the ventilation catheter 4 (the bronchial catheter 4-A in this embodiment) to be connected to the ends of the fixed line 4-2. The operating body 4-4 can be operated to tighten or loosen the ring 4-3 so that the ring 4-3 locks or loosens the video cable 1.

[0063] In this embodiment, the operating body 4-4 is configured to be in the shape of a handle, one end of the operating body 4-4 is configured to be connected to the outer wall of the tail interface of the auxiliary tube of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment) through a connecting shaft 4-5, a first clamping body 4-6 is provided on the operating body 4-4, and a second clamping body 4-7 is provided at a corresponding position of the outer wall of the tail interface of the auxiliary tube of the ventilation catheter 4 (bronchial catheter 4-A in this embodiment). Rotating the operating body 4-4 can make the first clamping body 4-6 clamped to the second clamping body 4-7, and tighten the line body of the fixing line 4-2, so that the ring 4-3 becomes smaller to form a fixing effect on the video cable 1. When the first clamping body 4-6 is separated from the second clamping body 4-7, the line body of the fixing line 4-2 is loosened, so that the ring 4-3 becomes larger and loses the fixing effect on the video cable 1, and the video cable 1 can be freely moved forward, backward, rotated, and removed again.

[0064] like Figure 4 As shown, a video cable external ventilation catheter is a schematic diagram of the structure of a video cable external tracheal catheter. Combined with the above information on the description of the video cable external tracheal catheter, it is not difficult to understand its structure and working principle. The clinical significance of the video cable external tracheal catheter is that in airway intervention surgery, two or more surgical tools can be inserted simultaneously through the inner cavity of the tracheal catheter 4-B, avoiding the need to constantly plug and unplug surgical tools, saving operation time, reducing surgical bleeding, and improving surgical safety. In this embodiment, during airway intervention, the breathing threaded tube needs to be removed from the inner cavity of the tracheal catheter 4-B. At this time, the patient's breathing stops, and the patient's blood oxygen content gradually decreases during the operation. When it drops to a dangerous value, the operation must be interrupted, and the breathing threaded tube is connected to the tracheal catheter 4-B to provide respiratory support to the patient and increase the patient's blood oxygen content. Then the cycle repeats, and the operation needs to continuously interrupt the oxygen supply, which increases the operation time and difficulty, and the patient is also at risk from time to time.

[0065] In order to solve the above problems, Figure 5 As shown, Figure 4The video shows a schematic diagram of the optimized structure of the tail interface of the tracheal tube 4-B of the external tracheal tube. One side of the tail interface of the tracheal tube 4-B is in sealed communication with the inner cavity of the tracheal tube 4-B, and at least two open tubes are arranged on the other side, one of which is arranged as a ventilator ventilation interface 4-B-1, and the other open tubes are arranged as an operation interface 4-B-2, and the operation interface 4-B-2 is provided with a sealing membrane ring 4-B-3 and a cover 4-B-4.

[0066] During intra-airway interventional surgery, the ventilator ventilation interface 4-B-1 is connected to the respiratory support device to provide respiratory support for the patient. During the operation, under the action of the sealing membrane ring 4-B-3 set at the operation interface 4-B-2, the sealing operation hole set in the middle of the sealing membrane ring 4-B-3 matches the outer diameter of the surgical tool, and can be tightly wrapped around the periphery of the airway surgical operation tool to prevent ventilation gas from leaking through the peripheral gap of the surgical operation tool during mechanical ventilation. During the operation, mechanical assisted breathing does not need to be interrupted to ensure the patient's oxygen supply, improve surgical efficiency and patient safety. The setting of multiple operation interfaces 4-B-2 (preferably two) allows multiple airway operation tools to be placed into the patient's airway through multiple operation interfaces 4-B-2 and through the inner cavity of the tracheal tube 4-B at the same time. After that, multiple airway operation tools can be used in combination, which can perform more complex operations, avoid constantly plugging and unplugging surgical tools during the operation, reduce the operation time, and improve the safety of the operation. After the operation, the cover 4-B-4 is used to cover the operation interface 4-B-2 to prevent gas from leaking through the sealing operation hole set in the middle of the sealing membrane ring 4-B-3, thereby providing safe mechanical ventilation for the patient.

Claims

1. A video cable external ventilation catheter, characterized in that: The invention comprises a ventilation catheter (4), a video cable (1) and a video catheter connecting mechanism; the video catheter connecting mechanism is provided with a video connecting mechanism (2) and the video cable (1) are movably connected; the video connecting mechanism (2) can temporarily lock the position of the rear section of the video cable (1); by loosening the video catheter connecting mechanism (2), the rear section of the video cable (1) can be manipulated to make the video cable (1) independently move forward, backward, rotate or escape from the video catheter connecting mechanism; the video catheter connecting mechanism is also provided with a catheter connecting mechanism (3) which can lock the position of the ventilation catheter (4); the head end of the video cable (1) is close to the head end of the ventilation catheter (4); The front end of the ventilation catheter (4) is provided with a side hole (4-1), and a fixing line (4-2) is buried through the side hole to temporarily fix or loosen the video cable (1); The middle section of the fixing line (4-2) is nested in the lumen of the ventilation catheter (4); a ring (4-3) is arranged at one end of the fixing line (4-2) at a position corresponding to the side hole (4-1) and out of the side hole (4-1); the ring (4-3) is sleeved on the outer wall of the video cable (1); tightening the ring (4-3) can lock the video cable (1) outside the side hole (4-1) of the lumen of the ventilation catheter (4); loosening the ring (4-3) can loosen the video cable (1); The other end of the fixing line (4-2) is arranged outside the tail interface of the ventilation tube (4); a fixing line operating body (4-4) is arranged outside the tail interface of the ventilation tube (4) and connected to the other end of the fixing line (4-2); the fixing line operating body (4-4) can be manipulated to pull or loosen the fixing line (4-2), thereby tightening or loosening the ring (4-3).

2. The video cable external ventilation catheter according to claim 1, characterized in that: It also includes a display screen and a power supply that are electrically connected to the video cable (1); the video cable (1) is provided with an adjuster (1-1) that can bend the head end of the video cable (1), and the operating end of the adjuster (1-1) is arranged at the tail end of the video cable (1).

3. The video cable external ventilation catheter according to claim 1, characterized in that: The video cable (1) is provided with a hollow cavity that passes through from head to tail, and an interface tube is provided at the tail of the hollow cavity to match and connect with a negative pressure suction tube or an oxygen supply tube.

4. The video cable external ventilation catheter according to claim 1, characterized in that: The video connection mechanism (2) comprises a video fixing tube (2-1), a cable locking arm (2-2) and a cable locking nut (2-3); the video cable (1) is nested in the video fixing tube (2-1); the outer wall of the cable locking arm (2-2) and the inner wall of the cable locking nut (2-3) are provided with matching threads; the cable locking nut (2-3) is sleeved outside the cable locking arm (2-2); tightening the cable locking nut (2-3) can tighten the cable locking arm (2-2) so that the position of the video cable (1) and the video catheter connection mechanism is locked; loosening the cable locking nut (2-3) can loosen the cable locking arm (2-2) so that the video cable (1) can move forward, backward, rotate or escape from the video catheter connection mechanism in the video fixing tube (2-1); 5. The video cable external ventilation catheter according to claim 1, characterized in that: The catheter connection mechanism (3) comprises a catheter fixing tube (3-1), a catheter locking arm (3-2) and a catheter locking nut (3-3); the ventilation catheter (4) is nested in the catheter fixing tube (3-1); the outer wall of the catheter locking arm (3-2) and the inner wall of the catheter locking nut (3-3) are provided with matching threads; the catheter locking nut (3-3) is sleeved outside the catheter locking arm (3-2); tightening the catheter locking nut (3-3) can tighten the catheter locking arm (3-2) so that the ventilation catheter (4) and the video catheter connection mechanism are locked in position; loosening the catheter locking nut (3-3) can loosen the catheter locking arm (3-2) so that the video catheter connection mechanism can be operated to separate from the ventilation catheter (4).

6. The video cable external ventilation catheter according to claim 1, characterized in that: The ventilation tube (4) comprises a bronchial tube (4-A) and a tracheal tube (4-B).

7. The video cable external ventilation catheter according to claim 6, characterized in that: When the ventilation catheter (4) is configured as a bronchial catheter (4-A), the side hole (4-1) is disposed at the front end opening of the secondary lumen of the bronchial catheter (4-A), the middle section of the fixing line (4-2) is nested in the secondary lumen of the bronchial catheter (4-A), the other end of the fixing line (4-2) is disposed outside the tail interface of the secondary lumen of the bronchial catheter (4-A), and the fixing line operating body (4-4) is disposed outside the tail interface of the secondary lumen of the bronchial catheter (4-A).

8. The video cable external ventilation catheter according to claim 6, characterized in that: When the ventilation tube (4) is configured as an endotracheal tube (4-B), one side of the tail interface of the endotracheal tube (4-B) is in sealed communication with the inner cavity of the endotracheal tube (4-B), and at least two open tubes are provided on the other side, one of which is configured as a ventilation interface (4-B-1) connected to a ventilator, and the other open tubes are configured as operating interfaces (4-B-2), and the operating interfaces (4-B-2) are provided with a sealing membrane ring (4-B-3) and a sealing cover (4-B-4).

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