Air bag type cannula capable of adjusting internal pressure

Abstract

The utility model relates to the technical field of tracheal intubation, in particular to an air bag type intubation capable of adjusting internal pressure, which comprises an intubation, an air inlet tube arranged in the intubation, an outer air guide tube arranged on the outer wall of the intubation, an inflatable air bag arranged on the outer wall of the intubation and close to the rear end, and an inner air guide tube arranged in the intubation. The two ends of the inner gas-guide tube are communicated with the outer gas-guide tube and the inflatable airbag respectively, a connecting tube is arranged at the end, away from the cannula, of the outer gas-guide tube, the connecting tube is connected with a gas pressure measuring instrument through a first gas-guide hose and connected with a fine adjustment part through a second gas-guide hose, and the gas inlet end of the connecting tube is connected with an extrusion airbag. According to the air bag type cannula capable of adjusting the internal pressure, by arranging the fine adjustment piece and the air pressure measuring instrument, accurate control over the internal air pressure of the inflatable air bag can be achieved, the problem that in a traditional method, the air inflation amount is not easy to control through manual operation, and consequently the air bag pressure is not accurate is solved, and therefore the success rate of an operation is increased.

Description

Technical Field

[0001] This utility model relates to the field of endotracheal intubation technology, specifically to an adjustable internal pressure cuff-type intubation cannula. Background Technology

[0002] Balloon-type intubation is a commonly used medical device primarily used to ensure airway patency and maintain a stable airway during surgery. The device typically consists of a flexible tube inserted into the airway and an inflatable cuff located proximally. The inflatable cuff forms a seal after inflation, effectively preventing outside air or fluid from entering the airway, thus ensuring patient safety during general anesthesia or other situations requiring a patent airway.

[0003] Patent CN211536095U discloses a pressure-adjustable endotracheal intubation mechanism, including an endotracheal tube inserted into a patient's body at one end. The endotracheal tube includes a body, a catheter cuff located at the front end of the body and abutting against the patient's trachea, and a pressure-adjusting part. The pressure-adjusting part includes a connecting tube, a compression cuff assembly located outside the patient's body, and a pressure indicator assembly. A first end of the connecting tube is connected to the catheter cuff via a connector, and a second end is connected to the compression cuff via a connector. The pressure indicator assembly is located between the catheter cuff and the compression cuff and is connected to the connecting tube assembly. This invention has at least the following advantages: by using an external pressure-adjusting cuff, the inflation of the catheter cuff can be maintained by manual adjustment by medical personnel. Furthermore, it is simple to operate; medical personnel can directly adjust the pressure by observing the pressure gauge.

[0004] In the existing technology, medical staff can directly inflate the catheter balloon by repeatedly squeezing the balloon according to the value fed back by the pressure indicator component, so that the catheter balloon is inflated to the preset state. However, this operation method is not easy to control the inflation volume, making it difficult to accurately adjust the pressure inside the inflated balloon. Medical staff need to repeatedly squeeze the balloon and inflate and deflate the valve. The complicated operation process will affect the operation time and the success rate of the operation. In view of this, we propose an adjustable internal pressure balloon-type cannula. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable internal pressure balloon-type intubation cannula to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable internal pressure airbag-type intubation cannula includes an intubation cannula with an air inlet connector at its front end and an air inlet tube inside the cannula. The front end of the air inlet tube is connected to the air inlet connector, which is used to connect to an external air source and communicate with the air inlet tube inside the cannula to guide gas into the intubation cannula. An external air guide tube is provided on the outer wall of the intubation cannula near its front end, and an inflatable airbag is provided on the outer wall of the intubation cannula near its rear end for inflation when needed to form a seal and increase the stability of the intubation cannula. An internal air guide tube is provided between the inner wall of the intubation cannula and the outer wall of the air inlet tube for connecting the external air guide tube and the inflatable airbag. Both ends of the internal air guide tube penetrate the inner wall of the intubation cannula and are respectively connected to the external air guide tube and the inflatable airbag. Gas in the external air guide tube passes through the internal air guide tube and enters the inflatable airbag.

[0008] The external air tube has a connecting tube at the end furthest from the intubation tube. This connecting tube is connected to a barometer via a first air delivery hose. The barometer monitors and displays the air pressure inside the inflatable cuff in real time, helping medical staff to make precise pressure adjustments. The barometer is existing technology and will not be described in detail here. The connecting tube is connected to a fine-tuning device via a second air delivery hose, enabling precise manual adjustment of the air pressure and avoiding the tedious process of repeated adjustments by medical staff. The air inlet end of the connecting tube is connected to a compression cuff to generate gas and inflate the inflatable cuff. In use, medical staff first inflate the inflatable cuff by squeezing the cuff, observing the pressure value on the barometer during inflation. When the pressure value is about to reach the set threshold, medical staff stop using the compression cuff, as the pressure of the compression cuff is not easily fine-tuned. At this point, medical staff operate the fine-tuning device to gradually increase the air pressure of the inflatable cuff to the required value, eliminating the need for repeated pressure adjustments and effectively improving intubation efficiency.

[0009] Preferably, the rear end of the intubation tube is provided with a hemispherical end, and the hemispherical end is provided with multiple air outlets. The air outlets are connected to the intubation tube. The hemispherical end can avoid damage to the patient's airway and allow gas to be discharged through the multiple air outlets.

[0010] Preferably, the external air duct is equipped with a control valve, which is used to open and close the external air duct to control the start and stop of gas flow. After adjusting the pressure of the inflatable airbag, closing the control valve can effectively prevent the pressure of the inflatable airbag from changing during use.

[0011] Preferably, the fine-tuning component includes a hollow cylinder, the front end of which is provided with a connecting pipe end, which connects the hollow cylinder and the second gas guide hose to provide gas flow.

[0012] Preferably, the rear end of the hollow cylinder is provided with an internally threaded tube, and the internally threaded tube is threadedly connected to a threaded rod. The front end of the threaded rod passes through the rear end of the hollow cylinder and is connected to a piston. The piston is driven to move back and forth by the threaded rod. When the piston moves forward, the pressure of the inflatable airbag can be increased, and vice versa, the pressure of the inflatable airbag can be reduced, which makes it easy for medical staff to quickly adjust the pressure of the inflatable airbag.

[0013] Preferably, the piston is rotatably connected to the threaded rod, and the outer wall of the piston is tightly fitted to the inner wall of the hollow cylinder to ensure sealing and effective pressure regulation.

[0014] Preferably, the rear end of the threaded rod is provided with a circular sleeve, which is fitted onto the outside of the hollow cylinder. The outer wall of the circular sleeve is provided with anti-slip texture, which effectively prevents dust from adhering to the threads of the threaded rod and improves its service life.

[0015] Preferably, an exhaust pipe is provided on the outer wall of the connecting tube near the left end, and a valve is provided on the exhaust pipe to release the air pressure in the inflation system, so that the gas in the inflatable airbag can be released when the tube is removed.

[0016] Preferably, the air outlet of the compression airbag is provided with an air outlet pipe, which is connected to a connecting pipe to discharge gas for delivery to the intubation system.

[0017] Preferably, the air inlet of the compression airbag is provided with an air inlet one-way valve to ensure that gas can only enter the compression airbag in one direction, and the air outlet pipe is provided with an air outlet one-way valve to ensure that gas can only flow in the direction of the connecting pipe and prevent reverse flow.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This adjustable internal pressure balloon cannula, through the setting of a fine-tuning device and a barometer, can achieve precise control of the internal air pressure of the inflatable balloon. Medical staff can monitor the internal pressure of the balloon in real time during the inflation process through the barometer. When the balloon pressure approaches the set threshold, the pressure can be precisely adjusted using the fine-tuning device. This avoids the problem of inaccurate balloon pressure caused by the difficulty in controlling the inflation volume due to manual operation in traditional methods, thereby improving the success rate of the operation.

[0020] 2. Unlike existing technologies that require medical staff to repeatedly adjust the pressure, this adjustable internal pressure balloon cannula integrates a squeezing balloon and a fine-tuning component. This allows medical staff to perform only rough inflation first, and then make fine adjustments using the fine-tuning component. This eliminates the need to repeatedly perform complex inflation and adjustment steps, greatly simplifying the operation process and improving the efficiency of the surgical procedure.

[0021] 3. This adjustable internal pressure balloon cannula, by setting a control valve on the external airway, allows medical staff to close the valve after adjusting the balloon pressure to maintain a constant pressure inside the balloon, avoiding unexpected changes in balloon pressure due to external factors, and providing more reliable safety assurance for intraoperative and postoperative management.

[0022] 4. This adjustable internal pressure cuffed intubation tube has a hemispherical end and multiple air outlets at the rear end, which not only reduces the risk of physical damage to the patient's airway, but also ensures that the gas in the tube can be smoothly discharged through the reasonable design of the position and number of air outlets, thus preventing airway damage while maintaining good ventilation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0025] Figure 3 This is a partial structural schematic diagram of the present invention;

[0026] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0027] Figure 5 This is a cross-sectional structural diagram of the fine-tuning component in this utility model;

[0028] In the diagram: 1. Insertion tube; 10. Air inlet connector; 11. Hemispherical end; 110. Air outlet; 2. Air inlet pipe; 3. Inflatable airbag; 4. Inner air guide pipe; 5. Outer air guide pipe; 50. Control valve; 6. Connecting pipe; 60. First air guide hose; 61. Second air guide hose; 62. Exhaust pipe; 7. Barometer; 8. Fine-tuning component; 80. Hollow cylinder; 800. Connecting pipe end; 81. Internally threaded pipe; 82. Threaded rod; 83. Piston; 84. Circular sleeve; 9. Compression airbag; 90. Air inlet check valve; 91. Air outlet pipe; 92. Air outlet check valve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Please see Figures 1-5 This utility model provides a technical solution:

[0032] An adjustable internal pressure airbag-type intubation cannula includes an intubation cannula 1, an air inlet connector 10 at the front end of the intubation cannula 1, an air inlet tube 2 inside the intubation cannula 1, the front end of the air inlet tube 2 being connected to the air inlet connector 10, the air inlet connector 10 being used to connect to an external air source and to connect to the air inlet tube 2 inside the intubation cannula to guide gas into the intubation cannula, an external air guide tube 5 being provided on the outer wall of the intubation cannula 1 near the front end, and an inflatable airbag 3 being provided on the outer wall of the intubation cannula 1 near the rear end, for inflating when needed to form a seal and increase the stability of the intubation cannula 1, an internal air guide tube 4 being provided between the inner wall of the intubation cannula 1 and the outer wall of the air inlet tube 2, for connecting the external air guide tube 5 and the inflatable airbag 3, both ends of the internal air guide tube 4 penetrating the inner wall of the intubation cannula 1 and being connected to the external air guide tube 5 and the inflatable airbag 3 respectively, and the gas in the external air guide tube 5 passing through the internal air guide tube 4 and entering the inflatable airbag 3;

[0033] The end of the external air tube 5 furthest from the intubation cannula 1 is equipped with a connecting tube 6. The connecting tube 6 is connected to a barometer 7 via a first air delivery hose 60. The barometer 7 is used to monitor and display the air pressure inside the inflatable cuff 3 in real time, helping medical staff to make precise pressure adjustments. The barometer 7 is existing technology and will not be described in detail here. The connecting tube 6 is connected to a fine-tuning component 8 via a second air delivery hose 61, enabling precise manual adjustment of the air pressure and avoiding the tedious process of repeated adjustments by medical staff. The air inlet end of the connecting tube 6 is connected to... The compression airbag 9 is used to generate gas and inflate the inflation airbag 3. During use, medical staff first inflate the inflation airbag 3 by squeezing the airbag 9 and observe the pressure value on the pressure measuring instrument 7 during the inflation process. When the pressure value is about to reach the set threshold, the medical staff stop using the compression airbag 9 because the pressure of the compression airbag 9 is not easy to fine adjust. At this time, the medical staff operate the fine adjustment part 8 to gradually increase the air pressure of the inflation airbag 3 to the required value. There is no need to repeatedly adjust the pressure of the inflation airbag 3, which effectively improves the intubation efficiency.

[0034] In this embodiment, the rear end of the intubation tube 1 is provided with a hemispherical end 11, and a plurality of air outlets 110 are provided on the hemispherical end 11. The air outlets 110 are connected to the intubation tube 1. The hemispherical end 11 can avoid damage to the patient's airway and realize the discharge of gas through the plurality of air outlets 110.

[0035] Specifically, the external air tube 5 is equipped with a control valve 50. The control valve 50 is used to open and close the external air tube 5 to control the start and stop of gas flow. After adjusting the pressure of the inflatable airbag 3, closing the control valve 50 can effectively prevent the pressure of the inflatable airbag 3 from changing during use.

[0036] Furthermore, the fine-tuning component 8 includes a hollow cylinder 80, with a connecting pipe end 800 at the front end of the hollow cylinder 80. The connecting pipe end 800 connects the hollow cylinder 80 and the second gas guide hose 61 to provide gas flow.

[0037] Furthermore, the rear end of the hollow cylinder 80 is provided with an internally threaded tube 81, and the internally threaded tube 81 is threadedly connected to a threaded rod 82. The front end of the threaded rod 82 passes through the rear end of the hollow cylinder 80 and is connected to a piston 83. The threaded rod 82 drives the piston 83 to move back and forth. When the piston 83 moves forward, the pressure of the inflatable airbag 3 can be increased, and vice versa, the pressure of the inflatable airbag 3 can be decreased, which makes it easy for medical staff to quickly adjust the pressure of the inflatable airbag 3.

[0038] Furthermore, the piston 83 is rotatably connected to the threaded rod 82, and the outer wall of the piston 83 is tightly fitted with the inner wall of the hollow cylinder 80 to ensure sealing and effective pressure regulation.

[0039] Furthermore, the rear end of the threaded rod 82 is provided with a circular sleeve 84, which is fitted onto the outside of the hollow column 80. The outer wall of the circular sleeve 84 is provided with anti-slip texture, which effectively prevents dust from adhering to the threads of the threaded rod 82 and improves its service life.

[0040] Furthermore, an exhaust pipe 62 is provided on the outer wall of the connecting tube 6 near the left end. The exhaust pipe 62 is equipped with a valve to release the air pressure in the inflation system, so that the gas in the inflatable airbag 3 can be released when the tube is removed.

[0041] Furthermore, the air outlet of the compression airbag 9 is provided with an air outlet pipe 91, which is connected to the connecting pipe 6 to discharge gas for delivery to the intubation system.

[0042] Furthermore, the air inlet of the compression airbag 9 is equipped with an air inlet check valve 90 to ensure that gas can only enter the compression airbag 9 in one direction, and the air outlet pipe 91 is equipped with an air outlet check valve 92 to ensure that gas can only flow in the direction of the connecting pipe 6 and prevent reverse flow.

[0043] In this embodiment, the adjustable internal pressure balloon-type intubation cannula is used by inserting one end of the cannula 1 into the patient's airway. Equipment for connecting to an external air source is prepared as needed, and it is ensured that the inlet connector 10 of the cannula is connected to the air source. The external air guide tube 5, connecting tube 6, first air guide hose 60, and second air guide hose 61 are correctly connected, and all one-way valves and control valves 50 are functioning properly. Gas is introduced into the system using the compression balloon 9 through its inlet one-way valve 90. At this time, the gas from the compression balloon 9 is introduced into the connecting tube 6 through the outlet tube 91, and then sequentially passes through the external air guide tube 5 and the internal air guide tube 4 into the inflatable balloon 3. During the initial inflation process, medical personnel need to observe the pressure value displayed on the pressure measuring instrument 7 in real time to ensure that it gradually approaches the set safety threshold. When the air pressure approaches the required threshold, the compression balloon 9 is stopped to avoid over-inflation. The fine-tuning component 8 is operated; by rotating the circular sleeve 84, the internal threaded rod 82 drives the piston 83 for fine adjustment; the piston 83 is pushed forward to increase the pressure. The pressure can be adjusted, or reversed, to reduce the pressure, ensuring that the pressure of the inflatable cuff 3 is adjusted to the optimal state. During fine-tuning, precise adjustment can be achieved by relying on the pressure reading provided by the barometer 7. After adjusting the internal pressure of the inflatable cuff 3, if no further adjustment is needed, the control valve 50 on the external air tube 5 can be closed to fix the pressure of the inflatable cuff 3 and prevent unexpected changes in cuff pressure due to external changes. If it is necessary to adjust or release gas, it can be controlled through the valve of the exhaust pipe 62 to release the gas pressure in the inflation system. When the intubation tube needs to be removed after use, first open the control valve 50 on the external air tube 5, and then release the gas through the valve of the exhaust pipe 62 to ensure that the gas in the inflatable cuff 3 is completely discharged. After ensuring that the inflatable cuff 3 is completely deflated, the intubation tube 1 can be safely removed to prevent any damage to the airway. By taking full advantage of the various advantages of this cuff-type intubation tube design, the safety and efficiency of the operation can be effectively improved, and the patient's comfort and safety during the process can be ensured.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An internally pressurisable balloon catheter comprising a catheter (1), characterised in that: The front end of the cannula (1) is provided with an air inlet connector (10), the cannula (1) is provided with an air inlet pipe (2), the front end of the air inlet pipe (2) is communicated with the air inlet connector (10), the outer wall of the cannula (1) and the position close to the front end are provided with an outer air guide pipe (5), the outer wall of the cannula (1) and the position close to the rear end are provided with an inflation air bag (3), the inner wall of the cannula (1) and the outer wall of the air inlet pipe (2) are provided with an inner air guide pipe (4), both ends of the inner air guide pipe (4) penetrate the inner wall of the cannula (1) and are communicated with the outer air guide pipe (5) and the inflation air bag (3) respectively, the end of the outer air guide pipe (5) away from the cannula (1) is provided with a connecting pipe (6), the connecting pipe (6) is connected with a gas pressure measuring instrument (7) through a first air guide hose (60), the connecting pipe (6) is connected with a fine adjustment part (8) through a second air guide hose (61), the air inlet end of the connecting pipe (6) is connected with a squeeze air bag (9).

2. The adjustable-intraluminal-pressure balloon catheter of claim 1, wherein: The rear end of the cannula (1) is provided with a hemispherical end (11), a plurality of air outlet holes (110) are formed in the hemispherical end (11), and the air outlet holes (110) are communicated with the cannula (1).

3. The adjustable-intraluminal-pressure balloon catheter of claim 1, wherein: The outer air guide pipe (5) is provided with a control valve (50), and the control valve (50) is used for opening and closing the outer air guide pipe (5).

4. The adjustable-intraluminal-pressure balloon catheter of claim 1, wherein: The fine adjustment part (8) comprises a hollow cylinder (80), the front end of the hollow cylinder (80) is provided with a connector end (800), and the connector end (800) is communicated with the hollow cylinder (80) and the second air guide hose (61).

5. The adjustable-intraluminal-pressure balloon catheter of claim 4, wherein: The rear end of the hollow cylinder (80) is provided with an internally threaded pipe (81), the internally threaded pipe (81) is threadedly connected with a threaded rod (82), and the front end of the threaded rod (82) penetrates the rear end of the hollow cylinder (80) and is connected with a piston (83).

6. The adjustable-intraluminal-pressure balloon catheter of claim 5, wherein: The piston (83) is rotationally connected with the threaded rod (82), and the outer wall of the piston (83) is tightly attached to the inner wall of the hollow cylinder (80).

7. The adjustable-intraluminal-pressure balloon catheter of claim 5, wherein: The rear end of the threaded rod (82) is provided with a circular sleeve (84), the circular sleeve (84) is sleeved on the outer side of the hollow cylinder (80), and the outer wall of the circular sleeve (84) is provided with anti-skid lines.

8. The adjustable-intraluminal-pressure balloon catheter of claim 1, wherein: The outer wall of the connecting pipe (6) and the position close to the left end are provided with an exhaust pipe (62), and the exhaust pipe (62) is provided with a valve.

9. The adjustable-intraluminal-pressure balloon catheter of claim 1, wherein: The air outlet of the squeeze air bag (9) is provided with an air outlet pipe (91), and the air outlet pipe (91) is communicated with the connecting pipe (6).

10. The adjustable-intraluminal-pressure balloon catheter of claim 9, wherein: The air inlet of the squeeze air bag (9) is provided with an air inlet check valve (90), and the air outlet pipe (91) is provided with an air outlet check valve (92).

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