Disposable small-friction-force water and air supply valve for endoscopy

Abstract

The utility model discloses a disposable small-friction-force water and gas supply valve for endoscopy. The disposable small-friction-force water and gas supply valve comprises a rod and a sleeve shell. A sleeve shell through hole is formed in the center of the sleeve shell; the rod penetrates through the through hole of the sleeve shell, is sleeved with the spring and then is fixed with the cover cap; a first O-shaped groove, a second O-shaped groove, a third O-shaped groove and a fourth O-shaped groove are sequentially formed in the length direction of the outer circumference of the rod from top to bottom; a first sealing ring is arranged in the first O-shaped groove; a second sealing ring is arranged in the second O-shaped groove; a third sealing ring is arranged in the third O-shaped groove; a fourth sealing ring is arranged in the fourth O-shaped groove; an annular protrusion is formed on the lower portion of the first O-shaped groove. The rod is sleeved with the three-jaw sealing ring, and the three-jaw sealing ring is located between the second sealing ring and the annular protrusion; claws are uniformly distributed on the upper surface of the three-claw sealing ring and are in contact with the annular bulge; the utility model has small friction force and is not easy to cause hand operation fatigue.

Description

Technical Field

[0001] The utility model belongs to the technical field related to endoscopic inspection water and air supply valves, and specifically relates to a disposable, low-friction endoscopic inspection water and air supply valve that can prevent cross infection, can intermittently supply water and air by pressing a cap, and is not prone to hand fatigue. Background Art

[0002] The existing endoscopic water and air supply valve is a reusable product, which needs to be disinfected again after use. If the disinfection process is not thorough, it may cause infection to medical staff and patients, which is a high risk. The existing endoscopic water and air supply valve is made of metal and is reusable. The product cost is high and it is inconvenient to use and maintain, which increases the patient's medical cost. The O-ring in the existing endoscopic water and air supply valve is a whole O structure, and the outer side is thicker, which causes medical staff to press hard during the endoscopic examination operation, causing hand fatigue and affecting the progress of the operation.

[0003] To this end, we have developed a disposable, low-friction endoscopic water and air supply valve that prevents cross-infection, allows intermittent water and air supply by pressing the cap, and is less likely to cause hand fatigue. Utility Model Content

[0004] The purpose of the utility model is to provide a disposable low-friction endoscope inspection water and air supply valve which can prevent cross infection, can intermittently supply water and air by pressing the cap, and is not prone to hand fatigue.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a disposable low-friction endoscope inspection water and air supply valve, comprising a rod, a shell and a cap; a shell through hole is provided at the center of the shell; the rod passes through the shell through hole, and is then fixed to the cap after being provided with a spring; a silicone ring is provided on the outside of the shell; a first O-shaped groove, a second O-shaped groove, a third O-shaped groove and a fourth O-shaped groove are provided in sequence from top to bottom in the length direction of the outer circumference of the rod; a first sealing ring is provided in the first O-shaped groove; a second sealing ring is provided in the second O-shaped groove; a third sealing ring is provided in the third O-shaped groove; a fourth sealing ring is provided in the fourth O-shaped groove; an annular protrusion is formed at the lower part of the first O-shaped groove; the three-claw sealing ring is provided on the rod and is located between the second sealing ring and the annular protrusion; a claw is evenly distributed on the upper surface of the three-claw sealing ring, and the claw is provided in contact with the annular protrusion.

[0006] Preferably, an annular protrusion is provided on the outer circumferential surface of the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring; and the thickness of the annular protrusion is smaller than the thickness of each ring.

[0007] Preferably, there is a movable space between the three-claw sealing ring and the rod, and the gap after assembly can effectively allow gas to pass through. At the same time, when pressing to deliver water, the three-claw sealing ring can isolate the gas.

[0008] Preferably, a parylene coating is added to the outer surfaces of the first sealing ring and the second sealing ring.

[0009] Compared with the prior art, the present invention provides a disposable low-friction endoscope inspection water and air supply valve, which has the following beneficial effects:

[0010] The disposable low-friction endoscope inspection water and air supply valve described in the utility model has good sealing performance and low friction, which makes it less likely for medical staff to get tired of their hands during surgery and increases the comfort of use; at the same time, the utility model is made of plastic and silicone materials, which is relatively low in cost, has certain advantages in market promotion and product application popularization, and greatly reduces the medical costs of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of a disposable low-friction endoscope inspection water and air supply valve proposed by the utility model;

[0013] Figure 2 This is an enlarged schematic diagram of the exploded three-dimensional structure of a disposable low-friction endoscope inspection water and air supply valve proposed by the utility model;

[0014] Figure 3 This is an enlarged schematic diagram of the three-dimensional structure of a rod of a water and air supply valve for a disposable low-friction endoscope inspection proposed by the present invention;

[0015] Figure 4 This is an enlarged schematic diagram of the three-dimensional structure of the first sealing ring of a disposable low-friction endoscope inspection water and air supply valve proposed by the present invention;

[0016] Figure 5 This is an enlarged schematic diagram of the main view of the first sealing ring of a disposable low-friction endoscope inspection water and air supply valve proposed by the utility model;

[0017] Figure 6 This is an enlarged schematic diagram of the three-dimensional structure of the second sealing ring of a disposable low-friction endoscope inspection water and air supply valve proposed by the present invention;

[0018] Figure 7This is an enlarged cross-sectional view of the second sealing ring of a disposable low-friction endoscope inspection water and air supply valve proposed by the present invention;

[0019] Figure 8 This is an enlarged schematic diagram of the three-dimensional structure of the third sealing ring of a disposable low-friction endoscope inspection water and air supply valve proposed by the utility model;

[0020] Figure 9 This is an enlarged schematic diagram of the main view of the third sealing ring of the water and air supply valve for a disposable low-friction endoscope inspection proposed by the present invention;

[0021] Figure 10 This is an enlarged schematic diagram of the three-dimensional structure of the fourth sealing ring of a disposable low-friction endoscope inspection water and air supply valve proposed by the present invention;

[0022] Figure 11 This is an enlarged schematic diagram of the main view of the fourth sealing ring of the water and air supply valve for a disposable low-friction endoscope inspection proposed by the present invention;

[0023] Figure 12 This is an enlarged schematic diagram of the three-dimensional structure of a three-claw sealing ring of a disposable low-friction endoscope inspection water and air supply valve proposed by the utility model;

[0024] Figure 13 This is an enlarged cross-sectional view of a three-claw sealing ring of a disposable low-friction endoscope inspection water and air supply valve proposed by the present invention;

[0025] In the figure: 1. Cap; 2. Silicone ring; 3. Spring; 4. Housing; 5. Rod; 6. First sealing ring; 7. Second sealing ring; 8. Third sealing ring; 9. Fourth sealing ring; 10. Three-claw sealing ring; 51. First O-ring; 52. Second O-ring; 53. Third O-ring; 54. Fourth O-ring; 55. Annular protrusion. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-13The utility model provides a technical solution: a disposable low-friction endoscope inspection water and air supply valve, comprising a rod 5, a shell 4 and a cap 1; a shell through hole (not marked) is provided at the center of the shell 4; the rod 5 passes through the shell through hole, is sleeved with a spring 3 and is fixed to the cap 1; a silicone ring 2 is sleeved on the outside of the shell 4; a first O-shaped groove 51, a second O-shaped groove 52, a third O-shaped groove 53 and a fourth O-shaped groove 54 are sequentially provided on the outer circumference of the rod 5 from top to bottom in the length direction; a first sealing ring 6 is provided in the first O-shaped groove 51; a second sealing ring 6 is provided in the second O-shaped groove 52 Sealing ring 7; a third sealing ring 8 is provided in the third O-shaped groove 53; a fourth sealing ring 9 is provided in the fourth O-shaped groove 54; an annular protrusion 55 is formed at the lower portion of the first O-shaped groove 51; the three-claw sealing ring 10 is sleeved on the rod 5 and is located between the second sealing ring 7 and the annular protrusion 55; three claws (not marked) are distributed on the upper surface of the three-claw sealing ring 10, and the claws are arranged in contact with the annular protrusion 55; annular protrusions (not marked) are provided on the outer circumferential surfaces of the first sealing ring 6, the second sealing ring 7, the third sealing ring 8, and the fourth sealing ring 9; the thickness of the annular protrusions is smaller than the thickness of each.

[0028] In this embodiment, when in use and in the air supply state, the fourth sealing ring 9 at the bottom is the first seal, and the third sealing ring 8 is the second seal. If the first seal fails, the third sealing ring 8 in the second seal can still play a sealing role, which can effectively block the water flow and effectively prevent water and air from flowing out at the same time.

[0029] In this embodiment, there is a movable space between the three-claw sealing ring 10 and the rod 5. The gap after assembly can effectively allow gas to pass through. At the same time, when pressing to deliver water, the three-claw sealing ring 10 can also play a role in isolating gas.

[0030] In this embodiment, when water is delivered during use, the fourth sealing ring 9 at the bottom is the first seal, the third sealing ring 8 is the second seal, and the first sealing ring 6 is the third seal. When the first seal or the second seal fails, the first sealing ring 6 can still play a sealing role, effectively blocking the water flow and effectively preventing water and gas from flowing out at the same time.

[0031] In this embodiment, the outer surfaces of the first sealing ring 6 and the second sealing ring 7 are coated with parylene, which can effectively reduce friction during use, so that medical staff are less likely to get tired during surgery and increase user comfort.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The disposable low-friction endoscope inspection water and air supply valve described in the utility model has good sealing performance and low friction, which makes it less likely for medical staff to get tired of their hands during surgery and increases the comfort of use; at the same time, the utility model is made of plastic and silicone materials, which is relatively low in cost, has certain advantages in market promotion and product application popularization, and greatly reduces the medical costs of patients.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable low-friction water and air supply valve for endoscopic inspection, comprising a rod, a housing, a cap, and a three-claw sealing ring; the housing has a through hole at its center; the rod passes through the through hole, is sheathed with a spring, and is secured to the cap; the housing is sheathed with a silicone ring; and is characterized by: The outer circumference of the rod is provided with a first O-shaped groove, a second O-shaped groove, a third O-shaped groove and a fourth O-shaped groove in sequence from top to bottom in the length direction; a first sealing ring is provided in the first O-shaped groove; a second sealing ring is provided in the second O-shaped groove; a third sealing ring is provided in the third O-shaped groove; a fourth sealing ring is provided in the fourth O-shaped groove; an annular protrusion is formed at the lower part of the first O-shaped groove; the three-claw sealing ring is sleeved on the rod and is located between the second sealing ring and the annular protrusion; a claw is evenly distributed on the upper surface of the three-claw sealing ring, and the claw is provided in contact with the annular protrusion.

2. The disposable low-friction endoscope inspection water and air supply valve according to claim 1, characterized in that: An annular protrusion is provided on the outer circumferential surface of each of the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring; and the thickness of the annular protrusion is smaller than the thickness of each of the sealing rings.

3. The disposable low-friction endoscope inspection water and air supply valve according to claim 1, characterized in that: There is a movable space between the three-claw sealing ring and the rod. The gap after assembly can effectively allow gas to pass through. At the same time, when pressing to deliver water, the three-claw sealing ring can isolate the gas.

4. The disposable low-friction endoscope inspection water and air supply valve according to claim 1, characterized in that: Parylene coating is added to the outer surfaces of the first sealing ring and the second sealing ring.

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