Three-way one-way valve for visible retroperitoneal cavity dilator

Abstract

The utility model discloses a three-way one-way valve for a visible retroperitoneal cavity dilator, and relates to the technical field of one-way valves. According to the technical scheme, the anti-backflow device is characterized by comprising a three-way pipe, air inlet pipes are arranged at the two ends of the three-way pipe respectively, an air outlet pipe is arranged at the other end of the three-way pipe, an air injection pipe is arranged at the end of the air outlet pipe, and an anti-backflow assembly is arranged in the air outlet pipe. The utility model aims to provide a three-way one-way valve for a visible retroperitoneal cavity dilator.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more specifically to a three-way one-way valve used for a visual retroperitoneal cavity dilator. Background Art

[0002] The retroperitoneoscopic approach is one of the common routes for upper urinary tract surgery in urology. However, since the retroperitoneal cavity is not connected to the abdominal cavity, the current clinical retroperitoneoscopic surgery requires the expansion of the retroperitoneum to artificially create an operating space required for surgery or examination.

[0003] Existing visual retroperitoneal dilators mostly use three-way valves with complex structures. The inflation process requires manual control of the opening and closing of the three-way valve, which makes the inflation efficiency low and cannot achieve continuous and rapid expansion of the retroperitoneal cavity.

[0004] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a three-way one-way valve for a visual retroperitoneal dilator.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a three-way one-way valve for a visual retroperitoneal dilator, comprising a three-way pipe, both ends of the three-way pipe are respectively provided with an air inlet pipe, the other end of the three-way pipe is provided with an air outlet pipe, the end of the air outlet pipe is provided with an air injection pipe, the interior of the air outlet pipe is provided with an anti-backflow component, the anti-backflow component comprises a conical cover slidably connected to the air outlet pipe, the inner wall of the air outlet pipe is provided with an upper limit edge and a lower limit edge along its inner wall, and the top outer side of the conical cover is provided along its circumferential direction There is an upper connecting ring that slides between the upper limit edge and the lower limit edge, and a plurality of springs are evenly arranged along the circumferential direction between the bottom of the upper connecting ring and the lower limit edge. A horizontally arranged connecting plate is fixedly connected to the air outlet pipe below the conical cover, and a vertically arranged fixing rod is fixedly connected to the top of the connecting plate. A through groove is provided at the bottom of the conical cover for the fixing rod to pass through and be slidably connected. A lower connecting ring is provided along the circumferential direction of the through groove, and a plurality of ventilation holes are provided in the lower connecting ring. The end of the fixing rod passes through the through groove and is provided with a sealing plate.

[0007] By adopting the above technical solution, when gas or liquid is injected, the conical cover is pushed to move in the air outlet pipe under the action of the injected gas or liquid pressure, so that the spring is compressed and the sealing plate is separated from the lower connecting ring, so that the gas or liquid enters the air injection pipe through the vent hole, thereby performing the inflation and liquid flushing work. When the injection work is completed, the conical cover is pushed to reset under the action of the spring elastic force, so that the upper connecting ring is pressed against the upper limit ring, and the sealing plate is re-contacted with the surface of the lower connecting ring, so that the vent hole is closed again to prevent the gas or liquid from flowing back.

[0008] The utility model is further configured as follows: a plurality of vertically arranged connecting rods are arranged at the bottom of the upper connecting ring, the lower limit edge is provided with through holes for sliding connection of the connecting rods, the spring is sleeved on the connecting rods, and its two ends abut between the upper connecting ring and the lower limit edge.

[0009] The utility model is further configured as follows: a sealing ring abutting against a lower surface of a lower connecting ring is provided on the lower surface of the sealing plate.

[0010] The utility model is further configured as follows: protective caps are arranged at the ends of the two air inlet pipes.

[0011] The utility model has the following beneficial effects: when gas or liquid is injected, under the action of the injected gas or liquid pressure, the conical cover is pushed to move in the air outlet pipe, so that the spring is compressed, and the sealing plate is separated from the lower connecting ring, so that the gas or liquid enters the air injection pipe through the vent hole, thereby performing the inflation and liquid flushing work; when the injection work is completed, under the action of the spring elastic force, the conical cover is pushed to reset, so that the upper connecting ring is tightly pressed against the upper limit ring, and the sealing plate is re-contacted with the surface of the lower connecting ring, so that the vent hole is closed again to prevent the gas or liquid from flowing back. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0013] Figure 2 This is a schematic diagram of a half-section structure of this embodiment;

[0014] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle A part;

[0015] Figure 4 for Figure 2 A partial enlarged schematic diagram of part B in the middle.

[0016] Description of the drawings: 1. Tee pipe; 2. Air inlet pipe; 3. Air outlet pipe; 4. Air injection pipe; 5. Protective cap; 6. Conical cover; 7. Upper limit edge; 8. Lower limit edge; 9. Upper connecting ring; 10. Spring; 11. Connecting plate; 12. Fixing rod; 13. Lower connecting ring; 14. Vent hole; 15. Sealing plate; 16. Connecting rod; 17. Sealing ring. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] As shown in the figure, a three-way one-way valve for a visual retroperitoneal dilator includes a three-way tube 1, two ends of the three-way tube 1 are respectively provided with an air inlet tube 2, the other end of the three-way tube 1 is provided with an air outlet tube 3, the end of the air outlet tube 3 is provided with an air injection tube 4, and the inside of the air outlet tube 3 is provided with an anti-backflow component. When in use, gas or liquid can be injected through the two air inlet tubes 2, and the ends of the two air inlet tubes 2 are connected with protective caps 5 through threads to play a sealing role. When in use, only the corresponding protective caps 5 need to be opened and injection is performed, which is convenient to use, and the anti-backflow component prevents the injected gas or liquid from backflowing.

[0020] The anti-backflow component includes a conical cover 6 slidably connected to the air outlet pipe 3, and the inner wall of the air outlet pipe 3 is provided with an upper limit edge 7 and a lower limit edge 8 along its inner wall, and an upper connecting ring 9 sliding between the upper limit edge 7 and the lower limit edge 8 is provided on the top outer side of the conical cover 6 along its circumferential direction, and a plurality of springs 10 are evenly arranged between the bottom of the upper connecting ring 9 and the lower limit edge 8 along the circumferential direction, and a horizontally arranged connecting plate 11 is fixedly connected below the conical cover 6 in the air outlet pipe 3, and a vertically arranged fixing rod 12 is fixedly connected to the top of the connecting plate 11, and a through groove is provided at the bottom of the conical cover 6 for the fixing rod 12 to pass through and be slidably connected, and a lower connecting ring 13 is provided along the circumferential direction of the through groove, and the lower connecting ring 13 is provided with a plurality of ventilation holes 14, and the end of the fixing rod 12 passes through the through groove and is provided with a sealing plate 15.

[0021] When injecting gas or liquid, under the action of the injected gas or liquid pressure, the conical cover 6 is pushed to move in the outlet pipe 3, so that the spring 10 is compressed, and the sealing plate 15 is separated from the lower connecting ring 13, so that the gas or liquid enters the gas injection pipe 4 through the vent 14, thereby performing the inflation and liquid flushing work. When the injection work is completed, under the action of the elastic force of the spring 10, the conical cover 6 is pushed to reset, so that the upper connecting ring 9 is pressed against the upper limit ring, and the sealing plate 15 is re-contacted with the surface of the lower connecting ring 13, so that the vent 14 is closed again to prevent the gas or liquid from flowing back.

[0022] A plurality of vertically arranged connecting rods 16 are arranged at the bottom of the upper connecting ring 9, and a through hole for sliding connection of the connecting rods 16 is opened at the lower limit edge 8. The spring 10 is sleeved on the connecting rod 16, and its two ends abut between the upper connecting ring 9 and the lower limit edge 8 to improve the stability of the conical cover 6 during operation.

[0023] The lower surface of the sealing plate 15 is provided with a sealing ring 17 which abuts against the lower surface of the lower connecting ring 13. The sealing ring 17 is provided to improve the sealing performance of the sealing plate 15 to the vent hole 14, thereby improving the effect of preventing backflow.

[0024] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A three-way one-way valve for a visual retroperitoneal dilator, comprising a three-way tube (1), wherein both ends of the three-way tube (1) are provided with an air inlet tube (2), the other end of the three-way tube (1) is provided with an air outlet tube (3), and the end of the air outlet tube (3) is provided with an air injection tube (4), characterized in that: An anti-backflow component is arranged inside the air outlet pipe (3), and the anti-backflow component comprises a conical cover (6) slidably connected to the air outlet pipe (3); an upper limit edge (7) and a lower limit edge (8) are arranged along the inner wall of the air outlet pipe (3); an upper connecting ring (9) is arranged on the outer side of the top of the conical cover (6) along its circumferential direction to slide between the upper limit edge (7) and the lower limit edge (8); a plurality of springs (10) are evenly arranged between the bottom of the upper connecting ring (9) and the lower limit edge (8) along its circumferential direction; A horizontally arranged connecting plate (11) is fixedly connected to the outlet pipe (3) below the conical cover (6); a vertically arranged fixing rod (12) is fixedly connected to the top of the connecting plate (11); a through groove is provided at the bottom of the conical cover (6) for the fixing rod (12) to pass through and be slidably connected; a lower connecting ring (13) is provided along the circumferential direction of the through groove; a plurality of vent holes (14) are provided in the lower connecting ring (13); and the end of the fixing rod (12) passes through the through groove and is provided with a sealing plate (15).

2. A three-way one-way valve for a visual retroperitoneal dilator according to claim 1, characterized in that: A plurality of vertically arranged connecting rods (16) are arranged at the bottom of the upper connecting ring (9), and a through hole for the connecting rods to be slidably connected is opened on the lower limit edge (8). The spring (10) is sleeved on the connecting rods (16), and its two ends abut between the upper connecting ring (9) and the lower limit edge (8).

3. A three-way one-way valve for a visual retroperitoneal dilator according to claim 1, characterized in that: The lower surface of the sealing plate (15) is provided with a sealing ring (17) which abuts against the lower surface of the lower connecting ring (13).

4. A three-way one-way valve for a visual retroperitoneal dilator according to claim 1, characterized in that: Protective caps (5) are provided at the ends of the two air inlet pipes (2).

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