Three-way control valve of double-cavity tracheal catheter

Abstract

The invention discloses a double-cavity tracheal catheter three-way control valve, which relates to the technical field of anesthesia auxiliary instruments and comprises a three-way control valve main body, a sealing ring, a rotating valve, a sealing gasket and a shell cover. The middle part of the three-way control valve main body is provided with a round pipe box, and the bottom is provided with left and right air outlet pipes, a shaft groove, two limiting strips and a main air inlet pipe on the side wall; the shaft groove is located in the bottom center of the round tube box; the centers of the left and right branch air pipe round holes and the center of the main air inlet round hole form an isosceles triangle on the same plane; the two limiting strips are positioned on two sides of the main air pipe circular hole; the rotating valve is integrally formed by a fan-shaped box cover, a right baffle, a left baffle, a rotating shaft and a T-shaped handle and is installed in a circular tube box of the three-way control valve body, and switching of single-lung and double-lung ventilation can be switched by rotating the rotating valve left and right. The anesthesia device is simple in structure, convenient to operate, high in practicability and capable of greatly relieving the workload of anesthetists.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a three-way control valve of a double-lumen endotracheal tube. Background Art

[0002] In the clinical anesthesia process of double-lumen endotracheal intubation, patients need to repeatedly switch between single-lung and double-lung ventilation to ensure that the surgical side of the lung collapses and facilitate the surgical operation of the surgeon. In order to achieve single-lung ventilation, our anesthesiologists often remove the Y-type connector of the double-lumen endotracheal tube and replace it with a single-tube connector to ventilate the left or right lung. If double-lung ventilation is required, the single-tube connector is removed and connected to the Y-type connector; some also do not remove the Y-type connector and use metal pliers to clamp the left and right bronchial tubes to switch between single and double lung ventilation; some also add double independent switch valves at the upper end of the Y-type connector. However, these existing methods have shown the shortcomings of cumbersome operation in clinical practice, which adds extra workload and inconvenience to anesthesiologists. In view of this, it is particularly important to invent a three-way control valve. This switch can not only efficiently solve the problem of switching between single-lung and double-lung ventilation, but also facilitate the suction of sputum on the left and right tracheal cavities. Therefore, it can effectively ensure the safety of patients while reducing the workload of clinical anesthesiologists. Summary of the invention

[0003] The purpose of the present invention is to provide a three-way control valve for a double-lumen endotracheal tube, which can reduce the cumbersome operations for anesthesiologists when switching between single-lung and double-lung ventilation and suction. The device has a simple structure and can greatly facilitate clinical operation and application.

[0004] To achieve the above object, the specific contents of the present invention are as follows: A three-way control valve for a double-lumen endotracheal tube comprises a three-way control valve body, a sealing ring, a rotary valve, a sealing pad and a shell cover.

[0005] The middle part of the three-way control valve body is a circular tube box, with two left and right bronchial circular holes, an axial groove and a limit strip and a main air inlet circular hole on the side wall at the bottom. The axial groove is at the center of the bottom of the circular tube box; the center of the left and right bronchial circular holes and the center of the main air inlet circular hole are in the same plane to form an isosceles triangle; the left and right bronchial circular holes are respectively provided with corresponding left and right air outlet pipes outside the bottom of the circular tube box, connecting the left and right bronchi of the double-lumen endotracheal catheter; the main air inlet circular hole is correspondingly provided with a main air inlet pipe outside the circular tube box, connecting the Y-shaped threaded tube on the anesthesia; the limit strip is arranged on both sides of the main air inlet circular hole.

[0006] The sealing ring is an open circular tube, which is placed on the inner wall of the circular tube box of the three-way control valve body, and the cross sections at both ends stop at the two sides of the limit strip.

[0007] The rotary valve is composed of a fan-shaped box cover, left and right baffles, a rotating shaft and a T-shaped handle on the fan-shaped cavity cover. The rotary valve is installed in the circular tube box of the three-way control valve body, and the lower end of the rotating shaft is installed in the shaft groove to keep the rotary valve able to rotate left and right.

[0008] The sealing gasket is placed on the three-way control valve main body circular tube box and the upper end of the rotary valve; the box cover is placed on the sealing gasket, and its lower end is sleeved outside the three-way control valve main body circular tube box and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is an axonometric view of the present invention; Figure 2 It is an exploded view of the present invention; Figure 3 This is an isometric view of the main body of the three-way control valve of the present invention; Figure 4 It is a rear view of the main body of the three-way control valve of the present invention; Figure 5 It is a vertical isometric view of the rotary valve of the present invention; Figure 6 is a right isometric view of the rotary valve of the present invention; Figure 7 is an axonometric view of double lung ventilation according to an embodiment of the present invention; Figure 8 is an axonometric view of right lung ventilation according to an embodiment of the present invention; Fig. 9 is an axonometric view of left lung ventilation according to an embodiment of the present invention; Figure numerals: 1. three-way control valve body; 2. sealing ring; 3. rotating valve; 4. sealing gasket; 5. shell cover; 6. round tube box; 7. main air inlet pipe; 8. right bronchial round hole; 9. left bronchial round hole; 10. shaft groove; 11. limit strip; 12. main air pipe round hole; 13. left air outlet pipe; 14. right air outlet pipe; 15. fan-shaped box cover; 16. right baffle; 17. left baffle; 18. rotating shaft; 19. right end of T-handle; 20. rear end of T-handle; 21. left end of T-handle; 22. T-handle. DETAILED DESCRIPTION

[0010] In order to clearly and thoroughly explain the objectives, technical solutions and significant advantages of the embodiments of the present invention to professionals in this technical field, the following will closely combine the specific examples of the present invention and the accompanying drawings to carry out a detailed analysis of its technical solution.

[0011] It should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict. Similar reference numerals represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0012] In the description of the embodiments of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "outside", "left", "right" and "rear" are based on the directions or positional relationships shown in the drawings, or are the directions or positional relationships in which the invention product is usually placed when in use, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. The present invention will be described in detail below in conjunction with embodiments. Example

[0013] like Figures 1 to 9 As shown, a three-way control valve for a double-lumen endotracheal tube includes a three-way control valve body 1, a sealing ring 2, a rotary valve 3, a sealing gasket 4 and a shell cover 5.

[0014] The middle part of the three-way control valve body 1 is set as a circular tube box 6, and the bottom of the circular tube box 6 is provided with a right bronchial circular hole 8, a left bronchial circular hole 9, an axial groove 10, two limit strips 11 and a main tracheal circular hole 12 on the side wall; the axial groove 10 is at the center of the bottom of the circular tube box 6; the center of the right bronchial circular hole 8 and the left bronchial circular hole 9 and the center of the main air inlet circular hole 12 are in the same plane to form an isosceles triangle; the right bronchial circular hole 8, the left bronchial circular hole 9 and the main tracheal circular hole 12 are respectively provided with corresponding right air outlet pipe 14, left air outlet pipe 13 and main air inlet pipe 7 outside the circular tube box 6, and the right air outlet pipe 14, the left air outlet pipe 13 and the main air inlet pipe 7 are respectively connected to the right bronchus and the left bronchus of the double-lumen tracheal tube and the Y-shaped threaded tube on the anesthesia machine; the limit strip 11 is located on both sides of the main tracheal circular hole 12; The sealing ring 2 is an open circular tube, which is placed on the inner wall of the circular tube box 6, and the cross sections at both ends stop at the two sides of the limit strip 11.

[0015] The rotary valve 3 is composed of a fan-shaped box cover 15, a right baffle 16, a left baffle 17, a rotating shaft 18 and a T-handle 22. The three directional ends of the T-handle 22 are the right end 19 of the T-handle, the rear end 20 of the T-handle and the left end 21 of the T-handle. The rotary valve 3 is installed in the circular tube box 6, and the protruding part of the lower end of the rotating shaft 18 is installed in the shaft groove 10 to keep the rotary valve 3 able to rotate left and right in the circular tube box 6.

[0016] The sealing gasket 4 is placed on the upper ends of the circular tube box 6 and the rotary valve 3. The shell cover 5 is placed on the sealing gasket 4, and its lower end is sleeved outside the circular tube box 6 and fixed.

[0017] Working principle: The three-way control valve of the double-lumen endotracheal tube is composed of a three-way control valve body 1, a sealing ring 2, a rotating valve 3, a sealing gasket 4 and a shell cover 5. When the patient is intubated with a double-lumen endotracheal tube, the end of the main air inlet pipe 7 is connected to the Y-shaped threaded pipe interface on the anesthesia, and the ends of the right air outlet pipe 14 and the left air outlet pipe 13 are respectively connected to the left and right bronchial interfaces of the double-lumen endotracheal tube. When the patient needs to perform bilateral lung ventilation, the rear end 20 of the T-handle on the rotary valve 3 is aligned with the main airway 7. At this time, the right bronchial circular hole 8, the left bronchial circular hole 9 and the main airway circular hole 12 are all in the lumen formed by the rotary valve 3 and the round tube box 6 and are interconnected, so that the patient's bilateral lung ventilation can be achieved; if the patient needs to perform right lung ventilation alone, the left end 21 of the T-handle is aligned with the main airway 7. At this time, the right bronchial circular hole 8 and the main airway circular hole 12 are all in the lumen formed by the rotary valve 3 and the round tube box 6 and are interconnected, and the left bronchial circular hole 12 is The circular hole 9 of the tube is connected to the air outside the fan-shaped cavity, so that the right lung can be ventilated normally while the left lung stops. When the patient needs to suction sputum or secretions, suction can be performed through the left bronchial circular hole 9; similarly, if the patient needs to ventilate the left lung alone, the right end 19 of the T-shaped handle is aligned with the main airway 7. At this time, the left bronchial circular hole 9 and the main tracheal circular hole 12 are both in the tube cavity formed by the rotary valve 3 and the circular tube box 6 and are interconnected, so that the left lung can be ventilated normally while the right lung stops. When the patient needs to suction sputum or secretions, suction can be performed through the right bronchial circular hole 8.

[0018] The above embodiments have demonstrated in detail the core concept, core characteristics and significant advantages of the present invention. Technical experts in this field should be deeply aware that the practical application of the present invention is far more than the specific embodiments listed above, and these examples and the descriptions in the specification are only concrete expressions of the basic principles of the present invention. Without violating the core concept and core protection scope of the present invention, the present invention allows for a wide range of variations and innovations, and all such derivative changes and improvements are considered to be part of the protection scope of the present invention. Ultimately, the exact protection boundaries of the present invention are jointly defined by the attached claims and their legal equivalents.

Claims

1. A three-way control valve for a double-lumen endotracheal tube, characterized in that: It includes a three-way control valve body, a sealing ring, a rotary valve, a sealing gasket and a shell cover.

2. The three-way control valve body according to claim 1, characterized in that: The middle part is set as a circular tube box, and the bottom of the circular tube box is provided with a right bronchial circular hole, a left bronchial circular hole, an axial groove, two limit strips and a main tracheal circular hole on the side wall; the axial groove is at the center of the bottom of the circular tube box; the centers of the right bronchial circular hole and the left bronchial circular hole are on both sides of the axial groove, and their centers are on the same straight line with the center of the axial groove, and form an isosceles triangle with the center of the main air inlet circular hole in the same plane; the right bronchial circular hole, the left bronchial circular hole and the main tracheal circular hole are respectively provided with corresponding right air outlet pipe, left air outlet pipe and main air inlet pipe on the outer side of the circular tube box; the two limit strips are located on both sides of the main airway circular hole.

3. The sealing ring according to claim 1 or claim 2, characterized in that: Its side surface is an open circular tube, which is placed on the inner wall of the circular tube box, and the cross sections at both ends stop at the two sides of the limit strip.

4. The rotary valve according to claim 1 or claim 2, characterized in that: The box is formed into a whole by a fan-shaped box cover, a right baffle, a left baffle, a rotating shaft and a T-shaped handle. After the two side lines of the V-shaped notch on the fan-shaped box cover are projected onto the bottom surface of the circular tube box, their intersection point is located at the center point, and the two side lines are tangent to the concentric circles of the left and right bronchial holes; the left and right baffles are arranged below the cross section of the fan-shaped box cover; the rotating shaft is arranged at the center of the fan-shaped box cover and below it; The T-shaped handle is arranged on the surface of the fan-shaped box cover, and the horizontal shape of the T-shaped handle is perpendicular to the center line of the V-shaped notch of the fan-shaped box cover; the rotary valve is installed in the circular tube box, and the protruding part of the lower end of the rotary shaft is installed in the shaft groove.

5. The sealing gasket according to claim 1 or claim 2, characterized in that: The sealing gasket is placed on the upper end of the circular tube box of the three-way control valve body and the fan-shaped box cover surface, and the shell cover is placed on the sealing gasket, and its lower end is sleeved outside the circular tube box and fixed.

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