Double-cavity pipe joint for switching single-lung ventilation and double-lung ventilation

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a double-cavity tube joint for switching single-lung ventilation and double-lung ventilation, which comprises a breathing machine threaded connector, shunt tubes, an end tube, a catheter threaded connector and a sputum suction tube, and the shunt tubes are fixedly connected to the left side and the right side of the rear end of the breathing machine threaded connector; an end pipe is fixedly connected to the rear end of the flow dividing pipe, a branch pipe is fixedly connected to the rear end of the end pipe, a screw rod is connected to the interior of the branch pipe in a screwed mode, a rotary knob is fixedly connected to the rear end of the screw rod, a connecting shaft is fixedly connected to the front end of the screw rod, and a sealing shaft is slidably connected to the rear end of the interior of the end pipe; a connecting groove is formed in the rear end of the sealing shaft; the sealing shaft in the end pipe can be driven to move front and back through the end pipe rear knob and the screw rod, opening and closing control over the guide pipe threaded connector can be achieved through the sealing shaft, opening and closing use of the guide pipe threaded connector can be facilitated, and the device is simple, convenient to use and convenient and fast to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a double-lumen pipe joint for switching between single-lung and double-lung ventilation. Background Art

[0002] When achieving lung isolation, existing double-lumen tubes require the use of pliers to clamp the non-ventilation side of the double-lumen tube connector, or the original connector of the double-lumen tube needs to be removed to connect the ventilated lung to the breathing circuit. During this operation, it is not convenient to achieve single-lung ventilation or double-lung ventilation. Other tools or special connections are required, which often delays time and may even cause the ventilated lung to be confused with the non-ventilated lung.

[0003] In the prior art, a Chinese utility model patent with publication number CN211675898U proposes a double-lumen pipe joint for switching between single-lung and double-lung ventilation, comprising a threaded pipe joint, two shunt tubes, and two airway tube connectors. A hollow tube is provided in the airway tube connector, a rotating handle is provided at the port of the hollow tube, and a ventilation hole is provided on the side wall of the hollow tube. By providing a hollow tube in the joint lumen near the double-lumen tube, a rotating handle is provided at the port of the hollow tube, and a circular hole is provided on the side wall of the hollow tube, free switching between single-lung and double-lung ventilation can be achieved by rotating the rotating handle, thereby greatly improving work efficiency and accuracy.

[0004] However, the existing double-lumen tube connector for switching between single and double lung ventilation has the following shortcomings when in use: when ventilation is needed, the rotating handle provided in the airway tube connector is rotated to drive the hollow tube provided in the airway tube connector to rotate, so that the vent provided on the side wall of the hollow tube is rotated to the shunt port side and overlapped with the shunt tube to open, so as to use the double-lumen tube for ventilation; when ventilation is not needed, the rotating handle provided in the airway tube connector is similarly rotated to drive the hollow tube provided in the airway tube connector to rotate in the opposite direction. The vent hole provided on the side wall of the hollow tube is rotated to the side of the shunt port and closed with the shunt tube. The rotating handle and the hollow tube are both arranged in the airway tube connector, which is inconvenient to rotate and control them from the outside. Moreover, the rotation only indicates the direction of rotation to open and close, and the rotation angle is inconvenient to control. It is inconvenient to control the misalignment angle of the vent hole and the shunt port according to the rotation angle, thereby realizing auxiliary regulation and control of the oxygen flow rate. Therefore, it is not easy to use. Therefore, the utility model newly proposes a double-lumen tube joint for switching between single and double lung ventilation. Utility Model Content

[0005] In order to solve the above-mentioned problems existing in the prior art, the utility model provides a double-lumen tube joint for switching between single and double lung ventilation. The knob and screw behind the end tube can drive the sealing shaft inside the end tube to move back and forth. The sealing shaft can realize the opening and closing control of the catheter threaded connector, so that the opening and closing of the catheter threaded connector can be used simply and conveniently.

[0006] To achieve the above object, the present utility model provides the following technical solution: A double-lumen tube connector for single and double lung ventilation switching, comprising a ventilator threaded connector, a shunt tube, an end tube, a catheter threaded connector, and a suction tube. The left and right sides of the rear end of the ventilator threaded connector are fixedly connected with shunt tubes respectively;

[0007] The rear end of the shunt tube is fixedly connected with an end tube. The rear end of the end tube is fixedly connected with a branch tube. A screw rod is screwed inside the branch tube. The rear end of the screw rod is fixedly connected with a knob. The front end of the screw rod is fixedly connected with a connecting shaft. A sealing shaft is slidably connected to the rear end inside the end tube. A connecting groove is formed at the rear end of the sealing shaft, and the connecting shaft is rotatably connected with the connecting groove;

[0008] One side of the rear end of the sealing shaft is fixedly connected with a limiting shaft. The bottom end of one side of the limiting shaft is fixedly connected with an indicating arrow. A limiting groove is formed at one side of the rear end of the end tube, and the limiting shaft is slidably connected with the limiting groove. A scale bar is fixedly connected to the outer wall of one side of the rear end of the end tube and is located below the limiting groove;

[0009] One side of the front end of the end tube is fixedly connected with a catheter threaded connector;

[0010] The bottom end of the catheter threaded connector is fixedly connected with a suction tube, and a sealing cover is screwed around the outside of the suction tube.

[0011] As a preferred technical solution of the double-lumen tube connector for single and double lung ventilation switching of the present utility model, both the connecting shaft and the connecting groove are in a "convex" shape structure.

[0012] As a preferred technical solution of the double-lumen tube connector for single and double lung ventilation switching of the present utility model, a sealing sleeve is fixedly connected around the outside of the front end of the sealing shaft, and the sealing sleeve is made of rubber material.

[0013] As a preferred technical solution of the double-lumen tube connector for single and double lung ventilation switching of the present utility model, a sealing gasket is fixedly connected to the bottom end inside the sealing cover, and the sealing gasket is made of rubber material.

[0014] As a preferred technical solution of the double-lumen tube connector for single and double lung ventilation switching of the present utility model, a flexible connecting strip is fixedly connected to the front end of the sealing cover, and the upper end of the flexible connecting strip is fixedly connected with the catheter threaded connector. The flexible connecting strip is made of rubber material.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] The utility model is provided with an end tube at the rear end of a shunt tube, and a catheter threaded connector is arranged on one side of the end tube. During use, the knob and screw rod behind the end tube can drive the sealing shaft in the end tube to move back and forth, and the opening and closing of the catheter threaded connector can be controlled through the sealing shaft, so as to facilitate the opening and closing use of the catheter threaded connector, which is simple, convenient and easy to use;

[0017] Meanwhile, during the process of the sealing shaft moving back and forth in the end tube, guiding and limiting can be carried out through the sliding of the limiting shaft relative to the limiting groove, and the moving distance of the sealing shaft can be judged by the movement of the indicating arrow on the limiting shaft relative to the scale bar. By adjusting the moving distance of the sealing shaft, the oxygen supply amount of the catheter threaded connector to the external double lumen catheter can be assisted and controlled, which is simple, convenient and better in use, so as to facilitate the switching between single and double lung ventilation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification. They are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the utility model;

[0020] Figure 2 is a schematic structural diagram of the connection between the end tube and the catheter threaded connector of the utility model;

[0021] Figure 3 is a schematic rear view structural diagram of the connection between the end tube and the catheter threaded connector of the utility model;

[0022] Figure 4 is a schematic sectional structural diagram of the connection between the end tube and the catheter threaded connector of the utility model.

[0023] In the figure: 1. ventilator threaded connector; 2. shunt tube; 3. end tube; 4. branch tube; 5. screw rod; 6. knob; 7. connecting shaft; 8. sealing shaft; 9. connecting groove; 10. sealing sleeve; 11. limiting shaft; 12. indicating arrow; 13. limiting groove; 14. scale bar; 15. catheter threaded connector; 16. suction tube; 17. sealing cover; 18. sealing gasket; 19. flexible connecting strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.

[0025] Embodiment

[0026] Please refer to Figures 1-4 , the present utility model provides the following technical solutions: a double-lumen tube connector for single and double lung ventilation switching, including a ventilator threaded connector 1, a shunt tube 2, an end tube 3, a catheter threaded connector 15, and a suction tube 16. Both the left and right sides of the rear end of the ventilator threaded connector 1 are fixedly connected with a shunt tube 2;

[0027] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in, further, the rear end of the shunt tube 2 is fixedly connected with an end tube 3, the rear end of the end tube 3 is fixedly connected with a branch tube 4, a screw rod 5 is screwed inside the branch tube 4, a knob 6 is fixedly connected to the rear end of the screw rod 5, a connecting shaft 7 is fixedly connected to the front end of the screw rod 5, a sealing shaft 8 is slidably connected to the rear end inside the end tube 3, a connecting groove 9 is opened at the rear end of the sealing shaft 8, both the connecting shaft 7 and the connecting groove 9 are in a "convex" shape structure, and the connecting shaft 7 is rotatably connected to the connecting groove 9. A sealing sleeve 10 is fixedly connected to the outer periphery of the front end of the sealing shaft 8 and the sealing sleeve 10 is made of rubber material. Among them, during use, by rotating the knob 6, the screw rod 5 and the connecting shaft 7 can be driven to rotate. Since the connecting shaft 7 is rotatably connected to the connecting groove 9, the rotating screw rod 5 can drive the sealing shaft 8 to move, and the guiding and limiting are carried out relative to the limiting groove 13 through the limiting shaft 11, so that the sealing shaft 8 moves horizontally. Furthermore, the control opening and closing of the catheter threaded connector 15 are realized through the movement of the sealing shaft 8. And through the setting of the sealing sleeve 10, the sealing effect between the sealing shaft 8 and the end tube 3 can be improved, preventing gas from leaking by itself;

[0028] Refer to Figure 1 , Figure 2 and Figure 4 As shown in, further, a limiting shaft 11 is fixedly connected to one side of the rear end of the sealing shaft 8, an indicating arrow 12 is fixedly connected to the bottom end of one side of the limiting shaft 11, a limiting groove 13 is opened on one side of the rear end of the end tube 3, and the limiting shaft 11 is slidably connected to the limiting groove 13. A scale bar 14 is fixedly connected to the outer wall of one side of the rear end of the end tube 3 and the scale bar 14 is located below the limiting groove 13. Among them, during use, through the movement of the indicating arrow 12 on the limiting shaft 11 relative to the scale bar 14, the moving distance of the sealing shaft 8 can be assisted to judge. By adjusting the moving distance of the sealing shaft 8, the oxygen passing amount into the catheter of the catheter threaded connector 15 can be assisted to adjust;

[0029] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in, further, a catheter threaded connector 15 is fixedly connected to one side of the front end of the end tube 3;

[0030] Refer toFigure 1 , Figure 2 , Figure 3 and Figure 4 As shown, further, a sputum suction tube 16 is fixedly connected to the bottom end of the catheter threaded connector 15. A sealing cover 17 is screwed onto the outer periphery of the sputum suction tube 16. A sealing gasket 18 is fixedly connected to the inner bottom end of the sealing cover 17, and the sealing gasket 18 is made of rubber. A flexible connection strip 19 is fixedly connected to the front end of the sealing cover 17, and the upper end of the flexible connection strip 19 is fixedly connected to the catheter threaded connector 15. The flexible connection strip 19 is made of rubber. Among them, during use, the sealing cover 17 at the bottom of the sputum suction tube 16 can be rotated and opened, and the suction tube is inserted into the sputum suction tube 16, the catheter threaded connector 15 and the catheter to perform sputum suction operation. Through the setting of the sealing gasket 18, the sealing effect between the sealing cover 17 and the sputum suction tube 16 can be improved to prevent external foreign objects from entering. Through the setting of the flexible connection strip 19, the opened sealing cover 17 is not easily dropped and lost after rotation.

[0031] In this embodiment, the present utility model is provided with an end tube 3 at the rear end of the shunt tube 2, and a catheter threaded connector 15 is provided on one side of the end tube 3. During use, the knob 6 and the screw rod 5 behind the end tube 3 can drive the sealing shaft 8 in the end tube 3 to move back and forth. Through the sealing shaft 8, the opening and closing of the catheter threaded connector 15 can be controlled, so as to facilitate the opening and closing use of the catheter threaded connector 15, which is simple, convenient and easy to use. At the same time, during the process of the sealing shaft 8 moving back and forth in the end tube 3, the guiding and limiting can be carried out by the relative sliding of the limiting shaft 11 in the limiting groove 13. And through the movement of the indicating arrow 12 on the limiting shaft 11 relative to the scale bar 14, the moving distance of the sealing shaft 8 can be assisted to judge. By adjusting the moving distance of the sealing shaft 8, the oxygen supply amount of the catheter threaded connector 15 to the external double lumen catheter can be assisted to adjust and control, which is simple, convenient and better to use, so as to facilitate the switching use of single and double lung ventilation.

[0032] Usage process and working principle of the present utility model: During use, the ventilator threaded connector 1 is screwed and connected to the ventilation pipeline of the external ventilator device, the two catheter threaded connectors 15 are screwed and connected to the two external double lumen catheters, and the two double lumen catheters are respectively inserted into the left and right lungs;

[0033] When ventilation is required, the knob 6 on the corresponding side drives the screw rod 5 and the connecting shaft 7 to rotate. Since the connecting shaft 7 is rotatably connected to the connecting groove 9, the rotating screw rod 5 can drive the sealing shaft 8 to move backward, and the limiting shaft 11 is used for guiding and limiting relative to the limiting groove 13, so that the sealing shaft 8 moves horizontally backward, thereby making the ventilator threaded connector 1, the shunt tube 2, the end tube 3, and the catheter threaded connector 15 communicate with each other to conduct pulmonary ventilation. During use, by the movement of the indicating arrow 12 on the limiting shaft 11 relative to the scale bar 14, the moving distance of the sealing shaft 8 can be assisted in judgment. By adjusting the moving distance of the sealing shaft 8, the oxygen intake amount of the catheter threaded connector 15 into the catheter can be assisted in adjustment and control;

[0034] When ventilation is not required, similarly drive the sealing shaft 8 to move forward, and the catheter threaded connector 15 can be sealed by the sealing shaft 8. By opening one side of the catheter threaded connector 15 and closing the other side, or closing one side of the catheter threaded connector 15 and opening the other side, or opening both catheter threaded connectors 15, the ventilation switching use of the left and right lungs can be realized, which is simple, convenient and easy to use;

[0035] When sputum suction operation is required, rotate and open the sealing cover 17 at the bottom of the sputum suction tube 16 on the corresponding side, and insert the suction tube into the sputum suction tube 16, the catheter threaded connector 15 and the catheter to conduct sputum suction operation.

[0036] In addition, the content not described in detail in this embodiment belongs to the category of prior art and common general knowledge.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A double-lumen tube adapter for single-lung ventilation to double-lung ventilation switching, characterized in that: It includes a ventilator threaded connector (1), a shunt tube (2), an end tube (3), a catheter threaded connector (15) and a suction tube (16). The rear ends of both left and right sides of the ventilator threaded connector (1) are fixedly connected with shunt tubes (2); The rear end of the shunt tube (2) is fixedly connected with an end tube (3). The rear end of the end tube (3) is fixedly connected with a branch tube (4). A screw rod (5) is screwed inside the branch tube (4). The rear end of the screw rod (5) is fixedly connected with a knob (6). The front end of the screw rod (5) is fixedly connected with a connecting shaft (7). A sealing shaft (8) is slidably connected to the inner rear end of the end tube (3). A connecting groove (9) is opened at the rear end of the sealing shaft (8), and the connecting shaft (7) is rotatably connected with the connecting groove (9); One side of the rear end of the sealing shaft (8) is fixedly connected with a limiting shaft (11). One side bottom end of the limiting shaft (11) is fixedly connected with an indicating arrow (12). A limiting groove (13) is opened at one side of the rear end of the end tube (3), and the limiting shaft (11) is slidably connected with the limiting groove (13). A scale bar (14) is fixedly connected to the outer wall of one side of the rear end of the end tube (3) and the scale bar (14) is located below the limiting groove (13); One side of the front end of the end tube (3) is fixedly connected with a catheter threaded connector (15); The bottom end of the catheter threaded connector (15) is fixedly connected with a suction tube (16). A sealing cover (17) is screwed around the outer circumference of the suction tube (16).

2. The double-lumen tube connector for single-to-double lung ventilation switching according to claim 1, wherein: Both the connecting shaft (7) and the connecting groove (9) are of a "convex" shape structure.

3. A double-lumen tube connector for single-lung ventilation to double-lung ventilation switching according to claim 1, characterized in that: A sealing sleeve (10) is fixedly connected around the outer circumference of the front end of the sealing shaft (8), and the sealing sleeve (10) is made of rubber.

4. A double-lumen tube connector for single-to-double lung ventilation switching according to claim 1, characterized in that: A sealing pad (18) is fixedly connected to the inner bottom end of the sealing cover (17), and the sealing pad (18) is made of rubber.

5. A double-lumen tube connector for single-to-double lung ventilation switching according to claim 1, characterized in that: The front end of the sealing cover (17) is fixedly connected with a flexible connecting strip (19), and the upper end of the flexible connecting strip (19) is fixedly connected with the catheter threaded connector (15). The flexible connecting strip (19) is made of rubber.

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