Negative pressure leak hunting device for insertion part of endoscope

Abstract

A negative pressure leak detection device for an endoscope insertion part comprises an insertion part to be detected and a negative pressure detection assembly, the negative pressure detection assembly comprises a suction bottle and a negative pressure suction pump, the negative pressure suction pump is communicated with a closed space in the suction bottle through a suction tube, the closed space is used for containing the insertion part to be detected, detection liquid and gas, and the detection liquid is used for detecting the insertion part to be detected. The negative pressure suction pump is used for pumping out gas in the closed space, the gas floats on the detection liquid, the insertion part to be detected is immersed in the detection liquid, and the suction tube is not immersed in the detection liquid. According to the utility model, on one hand, the problem that the air leakage of the insertion part cannot be accurately detected due to the inaccurate leakage detection result of the whole endoscope is avoided, and on the other hand, the overall efficiency of the leakage detection of the endoscope is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a negative pressure leak detection device for an endoscope insertion portion. Background Art

[0002] An endoscope is a medical device commonly used in minimally invasive surgery, mainly used for non-invasive or minimally invasive examination and treatment of human organs. An endoscope is usually divided into an insertion part for inserting into the body and an operating part for operating the insertion part. The insertion part is provided with a negative pressure suction device and a suction button. The negative pressure suction device can use negative pressure to suck out body fluids, gases or removed diseased tissues in the body. The suction button can manually block or open the negative pressure channel, that is, control whether the negative pressure suction device is enabled or not.

[0003] The structure of the insertion part of the endoscope is relatively complex, usually including a large number of open pipes, corresponding to a large number of sealing process parts and components. Therefore, it is difficult to perform accurate airtightness testing on the specified parts. At present, the overall airtightness test is generally performed on the insertion part of the endoscope after the final assembly is completed. However, the airtightness test performed in this way cannot detect the specific part where the air leak exists. Once the air leak is detected, the entire endoscope will be reworked, the product qualification rate is low, and the economic benefits are poor. Not only that, when the individual air leak of the endoscope is particularly serious, the slight air leak in the insertion part is difficult to detect, and there is a risk of water leakage during use, which will eventually damage the endoscope. Summary of the invention

[0004] The utility model provides a negative pressure leak detection device for an insertion part of an endoscope capable of accurately detecting the air tightness of an insertion part, comprising an insertion part to be tested and a negative pressure detection assembly, wherein the negative pressure detection assembly comprises a suction bottle and a negative pressure suction pump, wherein the negative pressure suction pump is connected to a closed space in the suction bottle through a suction tube, wherein the closed space is used to accommodate the insertion part to be tested, a detection liquid and a gas, wherein the negative pressure suction pump is used to extract the gas in the closed space, wherein the gas floats on the detection liquid, the insertion part to be tested is immersed in the detection liquid, and the suction tube is not immersed in the detection liquid.

[0005] Furthermore, the insertion part to be tested includes a head end, a bending part and a main hose, the head end and one end of the bending part are connected as a whole, the head end and the bending part are connected by a first sealing part and are relatively sealed from the external environment, the other end of the bending part is connected as a whole with the main hose, the bending part and the main hose are connected by a second sealing part and are relatively sealed from the external environment.

[0006] Furthermore, the head end portion, the bending portion, the first sealing portion, and the second sealing portion are immersed in the detection liquid.

[0007] Furthermore, the first sealing portion is obtained by winding and knotting the axial overlapped portion of the pipe of the head end portion and the curved portion and then applying resin glue to bond them.

[0008] Furthermore, the second sealing portion is obtained by twisting and knotting the axially overlapping portion of the pipeline of the main hose and the curved portion and then applying resin glue to bond them.

[0009] Furthermore, the suction bottle includes a bottle body and a bottle cap, the bottle cap is installed on the top of the bottle body and forms the enclosed space with the bottle body, the suction tube and the insertion part to be tested are inserted into the bottle cap, and the negative pressure suction pump and the insertion part to be tested are connected to the enclosed space through the bottle cap.

[0010] Furthermore, the suction bottle also includes a first sealing ring and a second sealing ring, the first sealing ring is arranged between the bottle body and the bottle cap, and the first sealing ring is used to seal the connection between the bottle body and the bottle cap, and the second sealing ring is arranged inside the bottle cap and between the bottle cap and the main hose, and the second sealing ring is used to seal the connection between the bottle cap and the main hose.

[0011] Furthermore, the bottle cap includes a first connection port and a second connection port opened thereon, the suction tube is passed through the first connection port and is fixedly connected to the first connection port, the main hose is passed through the second connection port, and the second sealing ring is arranged in the second connection port.

[0012] Furthermore, the suction tube includes a main body and a joint part, one end of the main body is used to communicate with the joint part, and the other end of the main body is used to communicate with the negative pressure suction pump, the joint part is fixedly connected to the bottle cap, and the joint part is used to communicate with the enclosed space in the suction bottle.

[0013] Furthermore, the endoscope insertion portion negative pressure leak detection device also includes a bottle base, and the suction bottle is installed and fixed in the bottle base.

[0014] The negative pressure leak detection device for the insertion part of an endoscope provided by the utility model realizes reliable air tightness detection of the insertion part of the endoscope alone through a sealed suction bottle and a negative pressure suction pump, which, on the one hand, avoids the problem that the leakage of the insertion part cannot be accurately detected due to inaccurate leakage detection results of the whole endoscope, and on the other hand, improves the overall efficiency of endoscope leakage detection. The negative pressure leak detection device for the insertion part of an endoscope in the utility model has a simple structure and a simple operation process, and has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the negative pressure leak detection device for the insertion portion of an endoscope provided by the utility model.

[0016] Figure 2 It is a schematic diagram of the insertion part to be tested in the utility model. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the present invention is described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0018] It should be noted that the terms "first", "second", "third", "fourth", etc. in the specification and claims of the utility model are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0019] See also Figure 1 to Figure 2 The negative pressure leak detection device for the insertion part of the endoscope of the utility model is a device that uses negative pressure suction to perform a separate airtightness test on the insertion part of the endoscope to improve the overall qualified rate of the endoscope. The negative pressure leak detection device for the insertion part of the endoscope in the utility model includes an insertion part to be tested 1, a negative pressure detection assembly, and the negative pressure detection assembly includes a suction bottle 2 and a negative pressure suction pump 3. The negative pressure suction pump 3 is connected to the closed space in the suction bottle 2 through a suction tube 4. The closed space is used to accommodate the insertion part to be tested 1, the detection liquid and the gas. The negative pressure suction pump 3 is used to extract the gas in the closed space. The gas floats on the detection liquid, the insertion part to be tested 1 is immersed in the detection liquid, and the suction tube 4 is not immersed in the detection liquid. Specifically, the size, size and shape of the suction bottle 2 in the utility model are not specifically limited. Its material can be glass, acrylic, or other one-way visible materials or two-way visible materials that are convenient for observing the internal situation of the suction bottle 2 from the outside. The detection liquid can be a liquid with good visibility, such as water. The gas can be a gaseous substance that is easy to obtain, low in cost and has a lower density than the test liquid, such as air. In addition, the endoscope insertion part negative pressure leak detection device in the utility model also includes a bottle base 5, and the suction bottle 2 is installed and fixed in the bottle base 5.

[0020] Further, the insertion part 1 to be tested includes a head end 11, a curved part 12 and a main hose 13, the head end 11 and one end of the curved part 12 are connected as one body, the head end 11 and the curved part 12 are connected and sealed relative to the external environment by a first sealing part 14, the other end of the curved part 12 is connected as one body to the main hose 13, the curved part 12 and the main hose 13 are connected and sealed relative to the external environment by a second sealing part 15. Specifically, in this embodiment, the pipeline in the head end 11 and the optical component are assembled by gluing, the first sealing part 14 is obtained by winding and knotting the axial overlap of the pipeline of the head end 11 and the curved part 12 and then applying resin glue to bond, the second sealing part 15 is obtained by winding and knotting the axial overlap of the pipeline of the main hose 13 and the curved part 12 and then applying resin glue to bond, that is, the head end 11 and the curved part 12, and the curved part 12 and the main hose 13 are all connected by wire tying and gluing, and the insertion part 1 to be tested is sealed from the external environment by these two wire tying and gluing. When testing the air tightness of the insertion part, the focus is on testing the air tightness of the head end 11, the bending part 12, the first sealing part 14 and the second sealing part 15. Therefore, it is necessary to immerse the head end 11, the bending part 12, the first sealing part 14 and the second sealing part 15 in the testing liquid in the suction bottle 2 for observation.

[0021] Furthermore, the suction bottle 2 includes a bottle body 21 and a bottle cap 22, the bottle cap 22 is installed on the top of the bottle body 21 and forms a closed space with the bottle body 21, the suction tube 4 and the insertion part 1 to be tested are inserted into the bottle cap 22, and the negative pressure suction pump 3 and the insertion part 1 to be tested are connected to the closed space through the bottle cap 22. Specifically, in this embodiment, the suction tube 4 and the insertion part 1 to be tested are respectively inserted into the first connection port 25 and the second connection port 26 opened on the bottle cap 22, the suction tube 4 is inserted into the first connection port 25 and is fixedly connected to the first connection port 25, and the main hose 13 is inserted into the second connection port 26.

[0022] Further, the suction bottle 2 further includes a first sealing ring 23 and a second sealing ring 24, wherein the first sealing ring 23 is disposed between the bottle body 21 and the bottle cap 22, and the first sealing ring 23 is used to seal and connect the bottle body 21 and the bottle cap 22, and the second sealing ring 24 is disposed inside the bottle cap 22 and between the bottle cap 22 and the main hose 13, and the second sealing ring 24 is used to seal and connect the bottle cap 22 and the main hose 13. Specifically, in the present embodiment, the first sealing ring 23 is disposed on the inner wall at the top of the bottle body 21 and at the connection between the bottle body 21 and the bottle cap 22, and the second sealing ring 24 is disposed in the second connection port 26, and the first sealing ring 23 and the second sealing ring 24 can be one or more of the forms of a rubber gasket, a silicone thin wall, and the like.

[0023] Further, the suction tube 4 includes a main body 41 and a joint part 42, one end of the main body 41 is used to communicate with the joint part 42, the other end of the main body 41 is used to communicate with the negative pressure suction pump 3, the joint part 42 is integrally connected with the bottle cap 22, and the joint part 42 is used to communicate with the enclosed space in the suction bottle 2. Specifically, in this embodiment, the joint part 42 is a cylindrical sleeve, which is integrally connected with the second connection port 26 on the bottle cap 22. That is to say, the joint part 42 is sealed and connected with the second connection port 26, the upper end of the joint part 42 is used to communicate with the main body 41, and the lower end of the joint part 42 extends into the gas in the enclosed space, but does not immerse in the detection liquid, so as to facilitate the negative pressure suction pump 3 to draw negative pressure.

[0024] Before using the negative pressure leak detection device for the insertion part of an endoscope of the utility model, it is necessary to assemble the negative pressure detection assembly first. Specifically, first install the bottle body 21 into the bottle body base 5, then install the first sealing ring 23 and the second sealing ring 24 to the corresponding positions on the bottle cap 22, namely, the connection between the bottle body 21 and the bottle cap 22 and the first connecting port 25, then install and seal the bottle cap 22 and the bottle body 21, then connect the two ends of the main body 41 to the joint part 42 and the negative pressure suction pump 3 respectively, connect the negative pressure suction pump 3 and the suction bottle 2, and finally insert the insertion part 1 to be tested into the suction bottle 2 through the first connecting port 25, and immerse the head end 11, the curved part 12, the first sealing part 14 and the second sealing part 15 into the detection liquid.

[0025] When using the endoscope insertion part negative pressure leak detection device of the utility model, first use a rubber plug to plug other pipes (not shown) of the insertion part 1 to be tested that are connected to the external environment to form an integrally sealed pipe, then start the negative pressure suction pump 3, and observe from the outside of the suction bottle 2 whether there are bubbles in the suction bottle 2, the head end 11, the curved part 12, the first sealing part 14 and the second sealing part 15. If there are bubbles, it indicates that there is a problem with the airtightness of the insertion part 1 to be tested. After the test is completed, the insertion part 1 to be tested can be pulled out from the first connection port 25 to replace the next endoscope insertion part to be tested.

[0026] In summary, the negative pressure leak detection device for the insertion part of the endoscope of the utility model realizes reliable air tightness detection of the insertion part of the endoscope through the sealed suction bottle and the negative pressure suction pump. On the one hand, it avoids the problem that the leakage of the insertion part cannot be accurately detected due to the inaccurate leakage detection result of the whole endoscope, and on the other hand, it improves the overall efficiency of the endoscope leakage detection. The negative pressure leak detection device for the insertion part of the endoscope in the utility model has a simple structure and a simple operation process, and has good economic benefits.

[0027] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A negative pressure leak detection device for an endoscope insertion portion, characterized in that: The invention comprises an insertion part to be tested (1) and a negative pressure detection assembly, wherein the negative pressure detection assembly comprises a suction bottle (2) and a negative pressure suction pump (3), wherein the negative pressure suction pump (3) is connected to a closed space in the suction bottle (2) via a suction tube (4), wherein the closed space is used to accommodate the insertion part to be tested (1), a detection liquid and a gas, wherein the negative pressure suction pump (3) is used to extract the gas in the closed space, wherein the gas floats on the detection liquid, the insertion part to be tested (1) is immersed in the detection liquid, and the suction tube (4) is not immersed in the detection liquid.

2. The endoscope insertion portion negative pressure leak detection device according to claim 1, characterized in that: The insertion portion to be tested (1) comprises a head end (11), a curved portion (12) and a main hose (13); the head end (11) and one end of the curved portion (12) are connected as a whole; the head end (11) and the curved portion (12) are connected via a first sealing portion (14) and are relatively sealed from the external environment; the other end of the curved portion (12) and the main hose (13) are connected as a whole; the curved portion (12) and the main hose (13) are connected via a second sealing portion (15) and are relatively sealed from the external environment.

3. The negative pressure leak detection device for the insertion portion of an endoscope according to claim 2, characterized in that: The head end portion (11), the bending portion (12), the first sealing portion (14) and the second sealing portion (15) are immersed in the detection liquid.

4. The negative pressure leak detection device for the insertion portion of an endoscope according to claim 2, characterized in that: The first sealing portion (14) is obtained by twisting and knotting the axially overlapping portion of the pipe of the head end portion (11) and the curved portion (12), and then applying resin glue to bond them.

5. The endoscope insertion portion negative pressure leak detection device according to claim 2, characterized in that: The second sealing portion (15) is obtained by twisting and knotting the axially overlapping portion of the main hose (13) and the curved portion (12) and then applying resin glue to bond them.

6. The negative pressure leak detection device for the insertion portion of an endoscope according to claim 2, characterized in that: The suction bottle (2) comprises a bottle body (21) and a bottle cap (22); the bottle cap (22) is mounted on the top of the bottle body (21) and forms the enclosed space with the bottle body (21); the suction tube (4) and the insertion part to be tested (1) are inserted into the bottle cap (22); the negative pressure suction pump (3) and the insertion part to be tested (1) are connected to the enclosed space through the bottle cap (22).

7. The endoscope insertion portion negative pressure leak detection device according to claim 6, characterized in that: The suction bottle (2) further comprises a first sealing ring (23) and a second sealing ring (24); the first sealing ring (23) is arranged between the bottle body (21) and the bottle cap (22); the first sealing ring (23) is used for sealingly connecting the bottle body (21) and the bottle cap (22); the second sealing ring (24) is arranged inside the bottle cap (22) and between the bottle cap (22) and the main hose (13); the second sealing ring (24) is used for sealingly connecting the bottle cap (22) and the main hose (13).

8. The negative pressure leak detection device for the insertion portion of an endoscope according to claim 7, characterized in that: The bottle cap (22) comprises a first connection port (25) and a second connection port (26) opened thereon, the suction tube (4) is inserted into the first connection port (25) and is integrally connected to the first connection port (25), the main hose (13) is inserted into the second connection port (26), and the second sealing ring (24) is arranged in the second connection port (26).

9. The negative pressure leak detection device for the insertion portion of an endoscope according to claim 6, characterized in that: The suction tube (4) comprises a main body (41) and a joint portion (42); one end of the main body (41) is used to communicate with the joint portion (42); the other end of the main body (41) is used to communicate with the negative pressure suction pump (3); the joint portion (42) is integrally connected to the bottle cap (22); and the joint portion (42) is used to communicate with the enclosed space in the suction bottle (2).

10. The endoscope insertion portion negative pressure leak detection device according to claim 1, characterized in that: The endoscope insertion portion negative pressure leak detection device also includes a bottle body base (5), and the suction bottle (2) is installed and fixed in the bottle body base (5).

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