Water supply device and endoscope
By combining adapters, water pipe end connectors, and connecting parts, and employing threaded connections and double seals, the connection instability problem of the endoscope water supply device is solved, achieving a water supply effect with good sealing under high pressure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI SHIXIN MEDICAL TECH CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-14
AI Technical Summary
The existing endoscope water and air supply channels and water and air supply components have poor connection stability and sealing, and are prone to water leakage under high pressure or dragging, affecting the performance.
The system employs a combination structure of adapter, water pipe end connector, and connector. A reliable connection between the adapter and the water pipe end connector is achieved through threaded connection and double seals. The first end of the connector is connected to the guide water channel, and the second end is connected to the water pipe end connector. First and second seals are provided to ensure airtightness.
The connection reliability and sealing of the endoscope water supply device have been improved to prevent water leakage under high pressure or dragging, and to ensure water supply stability.
Smart Images
Figure CN224483955U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of endoscopes, and more specifically, to a water supply device and an endoscope. Background Technology
[0002] An endoscope is a common medical device. Its slender insertion part can be inserted into a body cavity through natural orifices or surgical openings for examination or treatment. However, as the insertion part moves within the body cavity, the lens at the tip can accumulate mucus, resulting in a blurred image. Therefore, endoscopes typically have water and air supply channels and are equipped with water and air supply components (water reservoir, air pump, etc.). These components and channels supply water and air to the tip of the insertion part to flush the lens or to irrigate the tissues within the body cavity that need to be observed.
[0003] The existing water and air supply channels and water and air supply components use a conventional setting with sealing rings, which has poor reliability and stability. When the water / air pressure increases or when dragging occurs, water leakage is easy to occur, affecting the use of the endoscope. Utility Model Content
[0004] This invention provides a water supply device and an endoscope that can solve the above-mentioned problems.
[0005] The embodiments of this utility model can be implemented as follows:
[0006] An embodiment of this utility model provides a water supply device, which includes:
[0007] The adapter has a guide channel inside.
[0008] Water pipe end connector, the water pipe end connector is equipped with a connecting female, the connecting female is connected to the water pipe end connector;
[0009] The connector has a first end that is connected to the guide water channel, a first end that is threadedly connected to the adapter and is provided with a first sealing element, a second end that is connected to the water pipe end connector and is threadedly connected to the connecting female seat, a second sealing element is provided between the connector and the connecting female seat, and the connector is also sealed to the water pipe end connector.
[0010] Optionally, the connecting female includes a threaded inner sleeve and an extension tube shell. The water pipe end connector is provided with a mating chamber. The extension tube shell is sleeved outside the threaded inner sleeve. One end of the extension tube shell, which houses the threaded inner sleeve, is fixed to the mating chamber. The other end of the extension tube shell is sealed and connected to the outer shell of the adapter.
[0011] Optionally, the outer wall of the connector is provided with a first external thread and a second external thread, and the adapter is provided with an insert having an internal thread. The first external thread is threadedly connected to the internal thread on the insert, and the second external thread is threadedly connected to the internal thread on the threaded inner sleeve.
[0012] Optionally, the first end of the connector is provided with a first annular groove, and the first seal is disposed in the first annular groove; the second end of the connector is provided with a second annular groove, and the second seal is disposed in the second annular groove, and the second annular groove is located between the second external thread and the first external thread.
[0013] Optionally, the guide channel is connected to a conveying pipe fitting, which is connected to a water delivery pipe, and a clamping element is provided between the conveying pipe fitting and the water delivery pipe.
[0014] Optionally, the first end of the conveying pipe is wedge-shaped, and the first end of the conveying pipe is inserted into the inside of the water supply pipe, with the outer wall of the water supply pipe pressed against the clamping member; the second end of the conveying pipe is sealed to the adapter.
[0015] Optionally, the clamping element includes a retaining ring and a baffle. The outer wall of the delivery pipe is provided with a retaining groove, the retaining ring is engaged in the retaining groove, and the outer wall of the water delivery pipe abuts against the baffle.
[0016] Optionally, a check valve is installed inside the water pipe end connector.
[0017] Optionally, the water supply device includes a water storage bottle and a water delivery pipe, with both ends of the water delivery pipe connected to the water storage bottle and the water pipe end connector, respectively.
[0018] An embodiment of this utility model also provides an endoscope, including the water supply device described above.
[0019] The beneficial effects of this utility model embodiment:
[0020] The water supply device includes an adapter, a water pipe end connector, and a connector. The adapter has an internal guide channel, and the water pipe end connector has a connecting female seat that connects to the water pipe end connector. The first end of the connector communicates with the guide channel and is threadedly connected to the adapter, and is equipped with a first sealing element. The second end of the connector communicates with the water pipe end connector and is threadedly connected to the connecting female seat. A second sealing element is provided between the connector and the connecting female seat. The connector is also sealed to the water pipe end connector. In this embodiment of the water supply device, the adapter and the water pipe end connector are connected via a connector. Both the connector and the adapter and the water pipe end connector are threaded, and the first and second sealing elements ensure a seal. The reliability of the connection between the connector and the adapter, and between the water pipe end connector and the connector, is guaranteed. Even with increased water pressure or dragging, the connection will not detach or leak, ensuring a secure seal.
[0021] The endoscope includes a water supply device and has all the functions of a water supply device. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the water supply device provided in an embodiment of the present utility model;
[0024] Figure 2 This is a partial schematic diagram showing the connection and fit between the adapter, water pipe end connector and connector provided in the embodiments of this utility model;
[0025] Figure 3 This is a cross-sectional schematic diagram showing the connection and fit between the adapter, water pipe end connector and connector provided in the embodiments of this utility model;
[0026] Figure 4 This is a cross-sectional view of the connection between the connector and the water pipe end fitting provided in an embodiment of the present utility model;
[0027] Figure 5 This is a schematic diagram of the structure of the water pipe end connector after removing the connecting female seat in an embodiment of this utility model;
[0028] Figure 6 This is a schematic diagram of the structure of the extension tube shell provided in an embodiment of this utility model;
[0029] Figure 7 This is a cross-sectional schematic diagram showing the connection between the conveying pipe and the water supply pipe provided in an embodiment of this utility model.
[0030] Icons: 1-Adapter; 10-Guide water channel; 11-Outer shell; 12-Insertion; 2-Water pipe end connector; 20-Connecting female seat; 201-Threaded inner sleeve; 202-Extension pipe shell; 2021-Axial protrusion; 2022-Circumferential protrusion; 21-Mating chamber; 211-Axial groove; 212-Circumferential groove; 22-One-way valve; 3-Connector; 30-First external thread; 31-Second external thread; 32-First annular groove; 33-Second annular groove; 34-First seal; 35-Second seal; 4-Delivery fitting; 40-Slot; 5-Water delivery pipe; 6-Clamping part; 60-Clamping protrusion ring; 61-Baffle; 7-Water storage bottle; 8-Water delivery pipe. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0034] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0035] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0036] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0037] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0039] As described in the background section, during the movement of the endoscope insertion section within the body cavity, the lens at the tip of the insertion section may adhere to mucus, resulting in an unclear field of view. Therefore, the endoscope is generally equipped with a water and air supply channel and a water and air supply assembly (water storage bottle, air pump, etc.). Water and air are supplied to the tip of the insertion section through the water and air supply assembly and the water and air supply channel to rinse the lens at the tip of the insertion section or to rinse the body cavity tissue that needs to be observed.
[0040] The water and air supply channels inside an endoscope are generally water supply pipes and air supply pipes (pipes), and adapters are set to connect the pipes to the water and air supply components (water storage bottles, air pumps, etc.). However, the existing adapters and the connections between the pipes / water supply components are all sealed with conventional sealing rings, and the connection points lack fixing measures. When the water / air pressure increases or when dragging occurs, the connection points are very easy to loosen, which will lead to water / air leakage and affect the use of the endoscope.
[0041] Based on this, an embodiment of the present invention provides a water supply device and an endoscope, which can solve the above problems, and will be described in detail below.
[0042] Please refer to Figures 1 to 3The water supply device includes an adapter 1, a water pipe end connector 2, and a connector 3. The adapter 1 has a guide channel 10 inside. The water pipe end connector 2 has a connecting female 20, which is connected to the water pipe end connector 2. The first end of the connector 3 is connected to the guide channel 10 and is threadedly connected to the adapter 1 and has a first sealing element 34. The connector 3 is sealed to the adapter 1 through the first sealing element 34. The second end of the connector 3 is connected to the water pipe end connector 2 and is threadedly connected to the connecting female 20. A second sealing element 35 is provided between the connector 3 and the connecting female 20. The connector 3 is sealed to the water pipe end connector 2 through the second sealing element 35. The connector 3 is also sealed to the water pipe end connector 2. The water supply device uses threaded connections between the connector 3, the adapter 1, and the water pipe end connector 2. It is also equipped with a first sealing element 34 and a second sealing element 35 to achieve sealing. The connection reliability between the connector 3 and the adapter 1, as well as between the water pipe end connector 2 and the connector 3, is guaranteed. Even if the internal water pressure increases or dragging occurs, the connection will not fall off or leak water.
[0043] Specifically, the adapter 1 has a guide channel 10 inside, with both ends of the guide channel 10 penetrating the two side walls of the adapter 1. The two ends of the guide channel 10 are connected to the connector 3 and the delivery pipe 4, respectively. The connector 3 is connected to the water pipe end connector 2, and the delivery pipe 4 is connected to the water supply pipe 5, thereby delivering water through the water supply pipe 5 to the front end of the endoscope's insertion section. The water pipe end connector 2 is sealed to the water supply pipe 8, or the water pipe end connector 2 and the water supply pipe 8 are integrally formed. The water supply pipe 8 is also connected to the water storage bottle 7. When the air pressure inside the water storage bottle 7 is increased, the water in the water storage bottle 7 flows sequentially through the water supply pipe 8, water pipe end connector 2, connector 3, guide channel 10, delivery pipe 4, and water supply pipe 5 before being delivered to the front end of the insertion section for use. The end of the water supply pipe 8 is submerged below the liquid surface in the water storage bottle 7.
[0044] refer to Figures 3 to 6 The water pipe end connector 2 has a liquid flow channel inside, and a docking chamber 21 is opened at one end of the water pipe end connector 2. One end of the liquid flow channel is connected to the docking chamber 21, and the other end passes through the end face of the water pipe end connector 2. The water supply pipe 8 is connected to this end of the liquid flow channel. The connecting female seat 20 is set in the docking chamber 21. The connecting female seat 20 includes a threaded inner sleeve 201 and an extension tube shell 202. The threaded inner sleeve 201 has an internal thread. The extension tube shell 202 is sleeved on the outside of the threaded inner sleeve 201. One end of the extension tube shell 202, which houses the threaded inner sleeve 201, is fixed to the docking chamber 21. The other end of the extension tube shell 202 is sealed and connected to the outer shell 11 of the adapter 1.
[0045] refer to Figure 5 and Figure 6The extension tube housing 202 has an axial protrusion 2021 and an circumferential protrusion 2022 on its exterior. The inner wall of the docking chamber 21 has an axial groove 211 and an circumferential groove 212. The axial protrusion 2021 can be accommodated in the axial groove 211, and the circumferential protrusion 2022 can be accommodated in the circumferential groove 212. When the extension tube housing 202 is installed into the docking chamber 21 of the water pipe end connector 2, the axial protrusion 2021 is aligned with the axial groove 211 and pushed in axially, and the circumferential protrusion 2022 is aligned with the circumferential groove 212. The engagement of the axial protrusion 2021 and the axial groove 211 prevents the extension shell 202 from rotating within the docking chamber 21. The engagement of the circumferential protrusion 2022 and the circumferential groove 212 limits the axial position of the extension shell 202 within the docking chamber 21. Simultaneously, the engagement of the axial protrusion 2021 and the axial groove 211, as well as the engagement of the circumferential protrusion 2022 and the circumferential groove 212, increases the contact area between the connecting female 20 and the water pipe end connector 2, making the connection between the two more reliable and stable.
[0046] Refer again Figure 3 The adapter 1 is also provided with an outer shell 11, which protects the adapter 1. The end face of the outer shell 11 is fastened to the outside of the extension tube shell 202. A sealing ring is provided between the extension tube shell 202 and the outer shell 11, and the sealing connection between the extension tube shell 202 and the outer shell 11 is achieved through the sealing ring.
[0047] The outer wall of the connector 3 is provided with a first external thread 30 and a second external thread 31. The adapter 1 is provided with an insert 12, which has an internal thread. The first external thread 30 is threadedly connected to the internal thread on the insert 12. The second external thread 31 is threadedly connected to the internal thread on the threaded inner sleeve 201. The threaded inner sleeve 201 is tightened onto the connector 3 and presses the extension tube shell 202 onto the connector 3 to prevent the extension tube shell 202 from coming off the connector 3. The adapter 1 and the water pipe end connector 2 are stably and reliably connected together through the connector 3.
[0048] In this embodiment, the adapter 1 is a non-metallic part made by injection molding. The metal insert 12 on the adapter 1 can improve its strength and also allow for a fixed connection between the adapter 1 and the outer shell 11, increasing the stability of the adapter 1 within the outer shell 11. This embodiment does not limit the structure of the insert 12; it is merely an example. For instance, one end of the insert 12 is disc-shaped, and the other end is rod-shaped. The insert 12 is integrally cast. The disc-shaped end is fitted into a pre-set groove in the adapter 1, and a threaded hole is provided at the disc-shaped end. This threaded hole allows the first end of the connector 3 to pass through and be threadedly connected. The rod-shaped end is inserted into a pre-set limiting hole in the outer shell 11.
[0049] The first end of the connector 3 has a first annular groove 32 on its outer wall. A first seal 34 is disposed within the first annular groove 32 and is tightly connected to the adapter 1. The connector 3 and the adapter 1 are sealed together through the first seal 34. The second end of the connector 3 has a second annular groove 33 and a second seal 35 is disposed within the second annular groove 33 and is tightly connected to the extension housing 202. The second annular groove 33 is located between the second external thread 31 and the first external thread 30. Both the first seal 34 and the second seal 35 can be rubber-type sealing rings.
[0050] The second end of connector 3 passes through the mating chamber 21 of water pipe end connector 2 and extends into the liquid flow channel of water pipe end connector 2, where the second end of connector 3 is sealed to the liquid flow channel. The liquid flow channel of water pipe end connector 2 can undergo elastic deformation, and the second end of connector 3 is inserted into the liquid flow channel, achieving a seal between the two through interference fit.
[0051] refer to Figure 7 The guide channel 10 is connected to a conveying pipe 4 at one end away from the connector 3. An annular groove is formed on the outer wall of the conveying pipe 4, and a sealing ring is arranged within the groove. The conveying pipe 4 is sealed to the adapter 1 via the sealing ring. The other end of the conveying pipe 4 is connected to a water supply pipe 5, and a clamping member 6 is provided between the conveying pipe 4 and the water supply pipe 5. The clamping member 6 is sleeved on the outside of the conveying pipe 4, pressing the water supply pipe 5 against the end of the conveying pipe 4, thereby achieving a reliable sealed connection.
[0052] The first end of the conveying pipe fitting 4 is wedge-shaped and is inserted into the water supply pipe 5. The wedge-shaped end of the conveying pipe fitting 4 is easily inserted into the water supply pipe 5, thereby expanding the water supply pipe 5 and pressing the outer wall of the water supply pipe 5 against the clamping member 6. The second end of the conveying pipe fitting 4 is sealed to the adapter 1. The outer wall of the conveying pipe fitting 4 is provided with a groove 40, and the end of the clamping member 6 is provided with a retaining ring 60 and a baffle 61. The retaining ring 60 is engaged in the groove 40 to achieve the connection between the clamping member 6 and the conveying pipe fitting 4. The outer wall of the water supply pipe 5 abuts against the baffle 61, and the baffle 61 and the conveying pipe fitting 4 work together to press the water supply pipe 5 to achieve a seal.
[0053] Optionally, in this embodiment, both the connector 3 and the conveying pipe 4 are integrally formed, which can reduce the number of parts while ensuring sealing.
[0054] Optionally, the liquid flow channel of the water pipe end connector 2 is equipped with a one-way valve 22, which can prevent water from flowing back into the water storage bottle 7. In this embodiment, the one-way valve 22 includes a spring and a sealing ball. The liquid flow channel has a large-diameter section and a small-diameter section. The two ends of the large-diameter section are respectively connected to the small-diameter section. The spring is connected to the sealing ball, which is located in the large-diameter section of the liquid flow channel. When the sealing ball blocks the small-diameter section, water cannot be delivered to the front end of the insertion part. When the sealing ball is pushed away to the middle of the large-diameter section, water can be delivered from the water storage bottle 7 to the front end of the insertion part.
[0055] The water supply device of this utility model has the advantages of reliable connection and good sealing performance, and will not leak water whether it is conveying high-pressure water or the pipeline is dragged.
[0056] In other embodiments, a guide air passage may be added inside the adapter 1, so that the adapter 1 has a guide air passage and a guide water passage 10. The water pipe end connector 2 is connected to the connector 3 and the guide air passage and guide water passage 10 are connected to the water pipe end connector 2. And / or the air supply pipe and the water supply pipe 5 are connected by the delivery pipe 4 and the clamping member 6.
[0057] An embodiment of this utility model also provides an endoscope, including the above-mentioned water supply device, with an adapter 1 disposed on the endoscope, and the endoscope having all the functions of the water supply device.
[0058] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A water supply device, characterized in that, include: Adapter (1), the adapter (1) is provided with a guide channel (10) inside; Water pipe end connector (2), the water pipe end connector (2) is provided with a connecting female (20), the connecting female (20) is connected to the water pipe end connector (2); The connector (3) has a first end connected to the guide channel (10), a first end connected to the adapter (1) and provided with a first seal (34), a second end connected to the water pipe end connector (2) and a second end connected to the connecting female seat (20), a second seal (35) provided between the connector (3) and the connecting female seat (20), and the connector (3) is also sealed to the water pipe end connector (2).
2. The water supply device according to claim 1, characterized in that, The connecting female (20) includes a threaded inner sleeve (201) and an extension tube shell (202). The water pipe end connector (2) is provided with a docking chamber (21). The extension tube shell (202) is sleeved on the outside of the threaded inner sleeve (201). One end of the extension tube shell (202) containing the threaded inner sleeve (201) is fixed to the docking chamber (21). The other end of the extension tube shell (202) is sealed and connected to the outer shell (11) of the adapter (1).
3. The water supply device according to claim 2, characterized in that, The outer wall of the connector (3) is provided with a first external thread (30) and a second external thread (31). The adapter (1) is provided with an insert (12). The insert (12) has an internal thread. The first external thread (30) is threadedly connected to the internal thread on the insert (12). The second external thread (31) is threadedly connected to the internal thread on the threaded inner sleeve (201).
4. The water supply device according to claim 3, characterized in that, The first end of the connector (3) is provided with a first annular groove (32), and the first sealing element (34) is disposed in the first annular groove (32); the second end of the connector (3) is provided with a second annular groove (33), and the second sealing element (35) is disposed in the second annular groove (33), and the second annular groove (33) is located between the second external thread (31) and the first external thread (30).
5. The water supply device according to claim 1, characterized in that, The guide channel (10) is connected to a conveying pipe (4), which is connected to a water supply pipe (5), and a clamping member (6) is provided between the conveying pipe (4) and the water supply pipe (5).
6. The water supply device according to claim 5, characterized in that, The first end of the conveying pipe (4) is wedge-shaped and is inserted into the interior of the water supply pipe (5), with the outer wall of the water supply pipe (5) pressed against the clamping member (6); the second end of the conveying pipe (4) is sealed to the adapter (1).
7. The water supply device according to claim 6, characterized in that, The clamping component (6) includes a locking ring (60) and a baffle (61). The outer wall of the conveying pipe (4) is provided with a locking groove (40). The locking ring (60) is engaged in the locking groove (40). The outer wall of the water supply pipe (5) abuts against the baffle (61).
8. The water supply device according to claim 1, characterized in that, The water pipe end connector (2) is equipped with a one-way valve (22).
9. The water supply device according to any one of claims 1-8, characterized in that, The water supply device includes a water storage bottle (7) and a water delivery pipe (8), with both ends of the water delivery pipe (8) connected to the water storage bottle (7) and the water pipe end connector (2), respectively.
10. An endoscope, characterized in that, Includes the water supply device according to any one of claims 1-9.