Blockage catheter for single-lung ventilation

Abstract

The utility model discloses a blocking catheter for single-lung ventilation. The blocking catheter comprises a main catheter body. A camera cavity channel is formed in the main catheter body, a camera used for being connected with an external processor is arranged in the camera cavity channel in a sliding and sleeved mode, and the camera cavity channel comprises a front view port located at the near end of the main catheter body and a side view port located in the middle of the main catheter body and close to the near end of the main catheter body. The camera is used for obtaining the view field in front of the near end of the main catheter body through the front view port, and the camera is used for obtaining the view field of the part, located outside the bronchus, of the main catheter body through the side view port. The utility model has the advantages that the visual fields at different positions can be obtained, and the placement and the positioning are convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a clogging catheter for one-lung ventilation. Background Technology

[0002] One-lung ventilation refers to maintaining ventilation in only one lung. This technique is primarily used to facilitate surgical field exposure or to pathologically isolate one lung from another anatomically. The occluder plays a crucial role in one-lung ventilation surgery, accurately blocking the main bronchus on the target side through a single-lumen tube, achieving one-lung ventilation on the non-ventilated side and providing a favorable operating environment. Clinically used one-lung ventilation occluders lack visualization capabilities, requiring bronchoscope positioning and observation during placement. After use, the bronchoscope must be cleaned, disinfected, and sterilized separately, which is time-consuming and labor-intensive. Furthermore, the proximal end of commonly used occluders often has a certain angle, making insertion under a laryngeal mask airway difficult due to the angle between the laryngeal mask airway tube and the glottis and subglottic region. Therefore, clinicians often insert the occluder under laryngoscopy before inserting the laryngeal mask airway to address these issues, but this introduces numerous inconveniences in clinical practice.

[0003] To address the aforementioned issues, Chinese invention patent application CN114403971A discloses a visual and angle-adjustable bronchial occluder. This bronchial occluder uses a front-mounted camera assembly to accurately determine the bronchus to be entered. Subsequently, an angle control disc can be used to pull the flexion and extension control lines, allowing the flexible, bendable section to flex or extend as needed, satisfying the requirement for lateral adjustment to enter a specific bronchus. However, after the clinician manipulates the occluder to pass the carina and enter the bronchus, the occluder's tip still needs to extend a certain depth into the bronchus to ensure the airbag also enters. In the aforementioned bronchial occluder, the camera assembly is located at the front of the flexible section. Once the flexible section enters the bronchus, the camera assembly can only obtain a view of the area in front of the flexible section and deep within the bronchus, making it difficult to accurately determine the depth of the flexible section's entry into the bronchus. This can easily lead to positioning errors, resulting in the airbag failing to enter or only partially entering the bronchus, affecting the occlusion effect.

[0004] How to solve the above problems has become an urgent technical issue. Utility Model Content

[0005] The purpose of this invention is to provide a clogging catheter for single-lung ventilation that can provide a field of view from different positions and is easy to insert and position.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides an obstruction catheter for one-lung ventilation, comprising a main tube; the main tube is provided with a camera cavity, and a camera for connecting to an external processor is slidably fitted in the camera cavity. The camera cavity includes a forward viewing port located at the proximal end of the main tube and a side viewing port located in the middle of the main tube near its proximal end. The camera is used to obtain a field of view in front of the proximal end of the main tube through the forward viewing port, and the camera is used to obtain a field of view of the part of the main tube located outside the bronchus through the side viewing port.

[0008] Furthermore, the main body is also provided with a balloon and an inflation channel. The front view port and the side view port are located in front of and behind the balloon, respectively. The proximal end of the inflation channel is connected to the balloon, and the distal end of the inflation channel is connected to an inflation tube. The distal end of the inflation tube is connected to a one-way valve.

[0009] Furthermore, an indicator airbag is provided on the inflation tube.

[0010] Furthermore, the main body is also provided with a control handle and at least one adjusting wire cavity. An adjusting wire is sleeved in the adjusting wire cavity. The proximal end of the adjusting wire is fixedly connected to the proximal end of the main body, and the distal end of the adjusting wire is connected to the control handle to form a bending control structure that can control the bending angle of the proximal end of the main body.

[0011] Furthermore, it also includes a wire that slides into the camera cavity, with its proximal end connected to the camera and its distal end connected to a camera connector.

[0012] Furthermore, the main body is also provided with a main cavity, the proximal end of the main cavity is an open end and the distal end of the main body is connected to a Y-shaped tube, wherein the first end of the distal end of the Y-shaped tube is connected to a suction connector, the main cavity, the Y-shaped tube and the suction connector are sequentially connected to form a negative pressure suction channel, the second end of the distal end of the Y-shaped tube is an open end and the second end is connected to the camera cavity through the Y-shaped tube to form a visual channel for the wire to pass through.

[0013] Furthermore, both the front-view port and the side-view port are enclosed ports made of transparent material.

[0014] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0015] This invention features a camera cavity within a main trachea, incorporating a camera that slides within the cavity. Before inserting the proximal end of the main trachea into a lateral bronchus, the camera obtains a field of view through a forward-viewing port, encompassing the area in front of the proximal end of the main trachea and deep within the trachea. This assists the physician in guiding the proximal end of the main trachea past the carina and into the bronchus. Furthermore, once the proximal end of the main trachea is inside the bronchus, the camera is retracted and moved to a lateral-viewing port, providing a view of the carina and the occlusion cuff on the main trachea. This allows for assessment of the main trachea's position and whether the cuff is fully inside the bronchus, effectively improving positioning accuracy and occlusion effectiveness. Therefore, this invention provides views from different positions and facilitates insertion and positioning.

[0016] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the camera of this utility model located in the front-view port;

[0019] Figure 2 This is a schematic diagram of the overall structure of the camera of this utility model located in the side-view port;

[0020] Figure 3 This is a cross-sectional view (AA) of the present invention. Detailed Implementation

[0021] 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.

[0022] Please refer to Figures 1 to 3The present invention provides an obstruction catheter for one-lung ventilation, comprising a main tube 4; the main tube 4 is provided with a camera cavity 11, and a camera 14 for connecting to an external processor is slidably sleeved in the camera cavity 11. The camera cavity 11 includes a forward viewing port 1101 located at the proximal end of the main tube 4 and a side viewing port 1102 located in the middle of the main tube 4 near its proximal end. The camera 14 is used to obtain a field of view in front of the proximal end of the main tube 4 through the forward viewing port 1101, and the camera 14 is used to obtain a field of view of the part of the main tube 4 located outside the bronchus through the side viewing port 1102. In use, the camera 14 is located in the forward viewing port 1101. The camera 14 obtains a field of view in front of the proximal end of the main tube 4 and deep into the trachea through the forward viewing port. This allows the physician to control the proximal end of the main tube 4 to pass over the carina and enter the bronchus. After the proximal end of the main tube 4 passes over the carina and enters the bronchus, because the camera 14 is located in the forward viewing port 1101, the camera 14 can only obtain a field of view in front of the proximal end of the main tube 4 and deep into the bronchus. It is difficult for the physician to determine the position of the proximal end of the main tube 4 in the bronchus and whether the air bag used for occlusion on the main tube 4 has completely entered the bronchus. At this time, the camera 14 is retracted so that it passes over the air bag and moves to the side viewing port 1102. The camera 14 obtains a field of view behind the carina and the air bag through the side viewing port 1102, thereby determining the position of the main tube 4 and whether the air bag has completely entered the bronchus, thus effectively improving the accuracy of positioning and the effect of subsequent occlusion.

[0023] In this invention, the main tube 4 is further provided with a balloon 5 and an inflation channel 10. The front viewing port 1101 and the side viewing port 1102 are located in front of and behind the balloon 5, respectively. The balloon 5 is made by blow molding and is bonded to the main tube 4. When the camera 14 is located in the front viewing port 1101, it can obtain the field of view in front of the proximal end of the main tube 4, thereby assisting the physician in controlling the main tube 4 to move forward in the human trachea and controlling the proximal end of the main tube 4 to cross the carina and enter the bronchus. When the camera 14 is located in the side viewing port 1102, it can obtain the field of view behind the balloon 5 and the part of the main tube 4 located outside the bronchus, so that the physician can better judge the position of the main tube 4 and the balloon 5. The proximal end of the inflation channel 10 is connected to the balloon 5, and the distal end of the inflation channel 10 is connected to an inflation tube 6. The distal end of the inflation tube 6 is connected to a one-way valve 8. The one-way valve 8 is bonded to the indicator balloon 7 and connected to the inflation tube 6 for one-way inflation. When the proximal end of the main tube 4 enters the predetermined position in the bronchus, the balloon 5 is inflated by the syringe through the one-way valve 8, the inflation tube 6, and the inflation cavity 10 in sequence, so that the balloon 5 expands and adheres to the bronchial wall, thereby achieving the purpose of blocking the bronchus.

[0024] In this invention, an indicator airbag 7 is provided on the inflation tube 6 to indicate the inflation status of the balloon 5. It is made by blow molding and is bonded to the one-way valve 8 and connected to the inflation tube 6.

[0025] In this utility model, the main body 4 is further provided with a control handle 3 and at least one adjusting wire cavity 9. An adjusting wire is sleeved in the adjusting wire cavity 9 with a gap. The proximal end of the adjusting wire is fixedly connected to the proximal end of the main body 4, and the distal end of the adjusting wire is connected to the control handle 3 to form a bending control structure that can control the bending angle of the proximal end of the main body 4. In this invention, the number of the adjusting wire channel 9 is one. By pushing and pulling the protrusion on the control handle 3, the adjusting wire can be pulled to adjust the unidirectional angle of the proximal end of the main tube 4. Alternatively, two adjusting wire channels 9 can be provided, each containing an adjusting wire. By pushing and pulling the two protrusions on the control handle 3, the two adjusting wires can be pulled to adjust the bidirectional angle of the proximal end of the main tube 4. This allows the blocking catheter to be adjusted to the left or right, adapting to both left and right bronchial blockage scenarios, which is convenient and time-saving. Furthermore, adjusting the angle of the proximal end of the main tube 4 to bend it away from the side viewing port 1102 ensures that the axes of the unbent portion of the camera channel 11, the side viewing port 1102, and the camera 14 are coaxial, thereby obtaining the best field of view.

[0026] This invention also includes a wire, which slides within the camera cavity 11, with its proximal end connected to the camera 14 and its distal end connected to a camera connector 2. The camera connector 2 is exposed to the outside for connecting to an external processor. By pushing and pulling the camera 14 via the wire through the camera connector 2, the movement of the camera 14 within the camera cavity 11 can be controlled, allowing the camera 14 to move to either the front-view port 1101 or the side-view port 1102, thereby obtaining different field-of-view views and facilitating the insertion and positioning of the obstruction catheter.

[0027] In this invention, the main tube 4 is further provided with a main cavity 12. The proximal end of the main cavity 12 is an open end, and the distal end of the main tube 4 is connected to a Y-shaped tube 13. The first end of the distal end of the Y-shaped tube 13 is connected to a suction connector 1. The main cavity 12, the Y-shaped tube 13, and the suction connector 1 are sequentially connected to form a negative pressure suction channel. The second end of the distal end of the Y-shaped tube 13 is an open end, and this second end is connected to the camera cavity 11 via the Y-shaped tube 13 to form a visual channel for the wire to pass through. The suction connector 1 and the Y-shaped tube 13 are sequentially bonded and fixed to the main tube 4. Compared with existing occluders, the inner diameter of the main cavity 12 is larger. By equipping it with the Y-shaped tube 13 and the suction connector 1, which is used to connect to an external negative pressure suction tube, it can effectively suction secretions from the bronchus on the surgical side. Furthermore, thanks to the larger inner diameter of the main cavity 12, it can also accelerate the collapse of the lung on the surgical side.

[0028] In this invention, the front-view port 1101 and the side-view port 1102 are both closed ports made of transparent material. While not affecting the field of view of the camera 14, they effectively prevent the camera 14 from contacting human tissue, which can reduce the subsequent complicated cleaning, disinfection and sterilization operations, making it more convenient and economical.

[0029] In use, the camera 14 is first placed in the forward viewing port 1101. The camera 14 obtains a field of view of the proximal end of the main tube 4 and the depth of the trachea through the forward viewing port. Based on the field of view obtained by the camera 14, the physician controls the main tube 4 to move forward in the trachea. When the proximal end of the main tube 4 is observed to be close to the carina, the angle of the proximal end of the main tube 4 can be adjusted by adjusting the handle 3 to control the proximal end of the main tube 4 to pass over the carina and enter the required bronchus. Then, the camera 14 is controlled to retract backward in the camera cavity 11 until behind the bend of the main tube 4, and then the camera 14 is pushed forward to extend the camera 14 out of the side viewing port 1102. At this time, the camera 14 can obtain a field of view of the carina and the balloon 5, which effectively assists the physician in judging the position of the main tube 4 and whether the balloon 5 has fully entered the bronchus. Finally, the balloon 5 is inflated by the syringe through the one-way valve 8, the inflation tube 6, and the inflation cavity 10 in sequence, so that the balloon 5 expands and adheres to the bronchial wall, thereby achieving the purpose of blocking the bronchus.

[0030] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A clogging catheter for one-lung ventilation, comprising a main tube (4); characterized in that: The main body (4) is provided with a camera cavity (11), and a camera (14) for connecting to an external processor is slidably fitted in the camera cavity (11). The camera cavity (11) includes a front view port (1101) located at the proximal end of the main body (4) and a side view port (1102) located in the middle of the main body (4) near its proximal end. The camera (14) is used to obtain the field of view in front of the proximal end of the main body (4) through the front view port (1101), and the camera (14) is used to obtain the field of view of the part of the main body (4) located outside the bronchus through the side view port (1102).

2. The occlusion catheter for one-lung ventilation according to claim 1, characterized in that: The main body (4) is also provided with a balloon (5) and an inflation channel (10). The front viewing port (1101) and the side viewing port (1102) are located in front of and behind the balloon (5), respectively. The proximal end of the inflation channel (10) is connected to the balloon (5), and the distal end of the inflation channel (10) is connected to an inflation tube (6). The distal end of the inflation tube (6) is connected to a one-way valve (8).

3. The occlusion catheter for one-lung ventilation according to claim 2, characterized in that: An indicator airbag (7) is provided on the inflation tube (6).

4. A clogging catheter for one-lung ventilation according to any one of claims 1 to 3, characterized in that: The main body (4) is also provided with a control handle (3) and at least one adjusting wire channel (9). An adjusting wire is fitted in the adjusting wire channel (9) with a gap. The proximal end of the adjusting wire is fixedly connected to the proximal end of the main body (4), and the distal end of the adjusting wire is connected to the control handle (3) to form a bending control structure that can control the bending angle of the proximal end of the main body (4).

5. A clogging catheter for one-lung ventilation according to any one of claims 1 to 3, characterized in that: It also includes a wire that slides into the camera cavity (11) and the proximal end of the wire is connected to the camera (14) and the distal end of the wire is connected to the camera connector (2).

6. The occlusion catheter for one-lung ventilation according to claim 5, characterized in that: The main body (4) is also provided with a main cavity (12). The proximal end of the main cavity (12) is an open end and the distal end of the main body (4) is connected to a Y-shaped tube (13). The first end of the distal end of the Y-shaped tube (13) is connected to a suction connector (1). The main cavity (12), the Y-shaped tube (13), and the suction connector (1) are connected in sequence to form a negative pressure suction channel. The second end of the distal end of the Y-shaped tube (13) is an open end and the second end is connected to the camera cavity (11) through the Y-shaped tube (13) to form a visual channel for the wire to pass through.

7. A clogging catheter for one-lung ventilation according to any one of claims 1 to 3, characterized in that: Both the front-view port (1101) and the side-view port (1102) are closed ports made of transparent material.

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