Split type water valve applied to endoscope

Abstract

The utility model discloses a split type water valve applied to an endoscope, which is characterized by comprising a water valve body, a connecting pipe and a fastener. The output end of the water valve body is communicated with the first end of the connecting pipe, and the second end of the connecting pipe is used for stretching into a mounting channel of the endoscope and is in butt joint with the input end of a perfusion pipeline on the endoscope. The connecting pipe is provided with a mounting section, and the mounting section is located between the first end and the second end of the connecting pipe. The fastening piece is provided with a sliding hole, the fastening piece is installed on the installation section of the connecting pipe in a sleeving mode through the sliding hole, and the fastening piece and the connecting pipe are configured in the mode that the fastening piece can move on the installation section of the connecting pipe along the axis of the installation section and rotate around the axis of the installation section. The fastener is provided with an external thread, and the fastener is in threaded connection with an internal thread on a mounting channel of the endoscope through the external thread. A positioning anti-rotation structure is arranged at the second end of the connecting pipe and is used for positioning when the second end of the connecting pipe is in butt joint with a perfusion pipeline on the endoscope and preventing the connecting pipe from rotating.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a split water valve applied to an endoscope. Background Technique

[0002] A rigid ureteroscope is an advanced medical device specifically used for diagnosing and treating various diseases related to the ureter. It combines a high-definition optical system and a precision instrument channel, enabling doctors to directly observe the internal conditions of the ureter and perform precise surgical operations. The body of the rigid ureteroscope is relatively straight and hard, and its front end cannot be bent. Therefore, it is mainly used to treat stones located in the middle and lower segments of the ureter and cannot treat stones in the kidney.

[0003] In the existing rigid ureteroscopes, a water valve is generally used to assist in establishing the instrument channel and the water inlet and outlet channels on the endoscope. In the currently existing water valves, basically, welding or bonding forms are used for assembly. However, the water valve in the bonding method is prone to falling off due to collision with other objects during use, and the welding method is not convenient for installation and maintenance; and both have the risk that during the installation process, the water valve needs to be installed by visual observation, and the angles and orientations of the water valves installed by visual observation are different. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a split water valve applied to an endoscope. The split water valve applied to an endoscope includes a water valve body, a connecting pipe, and a fastener; the output end of the water valve body is communicated with the first end of the connecting pipe, and the second end of the connecting pipe is used to extend into the installation channel of the endoscope and be docked with the input end of the perfusion pipeline on the endoscope;

[0005] The connecting pipe has an installation section, and the installation section is located between the first end and the second end of the connecting pipe; a sliding hole is provided on the fastener, and the fastener is sleeved and installed on the installation section of the connecting pipe through the sliding hole, and the fastener and the connecting pipe are configured such that the fastener can move along the axis of the installation section and rotate around the axis of the installation section on the installation section of the connecting pipe;

[0006] External threads are provided on the fastener, and the fastener is threadedly connected with the internal threads on the installation channel of the endoscope through the external threads;

[0007] A positioning anti-rotation structure is provided at the second end of the connecting pipe, and the positioning anti-rotation structure is used for positioning when the second end of the connecting pipe is docked with the perfusion pipeline on the endoscope and preventing the connecting pipe from rotating self.

[0008] In the split water valve applied to an endoscope provided in an embodiment, a limiting surface facing the first end of the connecting pipe is provided at an end of the mounting section close to the second end of the connecting pipe, for limiting when the fastener is screwed into the mounting channel on the endoscope.

[0009] In the split water valve applied to an endoscope provided in an embodiment, a first sealing portion is provided at the second end of the connecting pipe, and the first sealing portion is used to cooperate with a second sealing portion on the endoscope to form a sealing structure to achieve sealing when the connecting pipe is docked with the perfusion pipeline of the endoscope.

[0010] In the split water valve applied to an endoscope provided in an embodiment, the first sealing portion is a sealing ring sleeved on the circumference of the second end of the connecting pipe.

[0011] In the split water valve applied to an endoscope provided in an embodiment, the positioning and anti-rotation structure is a bump provided on the end surface of the second end of the connecting pipe.

[0012] In the split water valve applied to an endoscope provided in an embodiment, two such bumps are provided on the end surface of the second end of the connecting pipe, and the two bumps are centrosymmetric about the axis of the connecting pipe.

[0013] In the split water valve applied to an endoscope provided in an embodiment, a connecting portion is provided on the end surface of the fastener facing the first end of the connecting pipe, and the connecting portion is used for the connection of the installation tooling so that the installation tooling drives the fastener to rotate in the installation channel of the endoscope.

[0014] In the split water valve applied to an endoscope provided in an embodiment, the connecting portion is a plurality of grooves provided on the end surface of the fastener facing the first end of the connecting pipe, and the plurality of grooves are distributed along the circumference of the fastener.

[0015] In the split water valve applied to an endoscope provided in an embodiment, the first end of the connecting pipe is configured such that the fastener can be sleeved into the mounting section on the connecting pipe from the first end of the connecting pipe.

[0016] In the split water valve applied to an endoscope provided in an embodiment, the water valve body is welded to the first end of the connecting pipe, and the size of the water valve body is configured to prevent the fastener from detaching from the first end of the connecting pipe.

[0017] Due to the adoption of the above technical solutions, the present utility model has the following advantages and positive effects compared with the prior art:

[0018] The split water valve applied to an endoscope provided by the present utility model, when installed on the endoscope, inserts the second end of the connecting pipe into the installation channel on the endoscope, and realizes positioning when docking with the perfusion pipeline on the endoscope through the positioning and anti-rotation structure. After the second end of the connecting pipe is docked with the perfusion pipeline on the endoscope, thread the fastener with the internal thread of the installation channel on the endoscope, and complete the installation after connection. The threaded connection between the external thread on the fastener and the internal thread on the installation channel allows the connecting pipe to only rotate self in the installation channel, and then due to the setting of the positioning and anti-rotation structure, the connecting pipe cannot rotate self, so the stable connection between the split water valve of the present utility model and the endoscope is achieved, and it will not fall off due to collision with other objects during use. When the split water valve needs to be removed from the endoscope due to maintenance or other reasons, only need to screw out the fastener from the internal thread of the endoscope installation channel, and then take out the connecting pipe from the endoscope installation channel. Therefore, the split water valve provided by the present utility model is convenient for installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model.

[0020] Figure 1 is a schematic structural diagram of a split water valve applied to an endoscope of the present utility model;

[0021] Figure 2 is a schematic structural diagram of a split water valve applied to an endoscope of the present utility model;

[0022] Figure 3 is a schematic structural diagram of an installation tooling;

[0023] Figure 4 is a schematic diagram when two parts of an installation tooling are opened.

[0024] DESCRIPTION OF THE REFERENCE NUMERALS:

[0025] 1: water valve body; 2: fastener; 3: connecting pipe; 4: sealing ring; 5: bump; 6: installation tooling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will describe the specific embodiments of the present utility model in conjunction with the drawings. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can be obtained.

[0027] To simplify the drawings, only the parts related to the present utility model are schematically shown in each figure, and they do not represent the actual structure of the product as a whole. Additionally, to simplify the drawings for better understanding, for components with the same structure or function in some figures, only one of them is schematically illustrated, or only one of them is labeled. In this article, "one" not only means "only this one", but also can mean "more than one" situation.

[0028] Refer to Figure 1 and Figure 2 Referring to

[0029] When installing the split water valve of this embodiment onto an endoscope, insert the second end of the connecting pipe 3 into the installation channel of the endoscope, and achieve positioning during docking with the perfusion pipeline on the endoscope through the positioning and anti-rotation structure. After the second end of the connecting pipe 3 is docked with the perfusion pipeline on the endoscope, thread the fastener 2 with the internal thread on the installation channel of the endoscope. After connection, the installation is completed. The threaded connection between the external thread on the fastener 2 and the internal thread on the installation channel allows the connecting pipe 3 to only rotate within the installation channel, and then due to the setting of the positioning and anti-rotation structure, the connecting pipe 3 cannot rotate, thus achieving a stable connection between the split water valve and the endoscope, and preventing it from falling off due to collision with other objects during use.

[0030] When it is necessary to remove the split water valve from the endoscope due to reasons such as maintenance, simply unscrew the fastener 2 from the internal thread of the installation channel of the endoscope, and then take out the connecting pipe 3 from the installation channel of the endoscope. Therefore, the split water valve provided in this embodiment is convenient for installation and maintenance.

[0031] The following further explains the split water valve applied to an endoscope in this embodiment.

[0032] On the installation section of the connecting pipe 3, a limiting surface facing the first end of the connecting pipe 3 is provided at the end near the second end of the connecting pipe 3. The limiting surface is used for the limitation when the fastener 2 is screwed into the installation channel on the endoscope through threaded connection, and at the same time is used to prevent the fastener 2 from slipping off the second end of the connecting pipe 3. During the process of installing the split water valve onto the endoscope, when tightening the fastener 2, it is generally considered that when the fastener 2 abuts against the limiting surface, the fastener 2 is tightened in place; of course, in actual use, even if the fastener 2 does not abut against the limiting surface, as long as it is threadedly connected with the internal thread on the installation channel of the endoscope, it has the function of restricting the connecting pipe 3 to only allow self-rotation within the installation channel, and with the cooperation of the positioning anti-rotation structure, the split water valve can be stably connected to the endoscope.

[0033] The first end of the connecting pipe 3 is configured such that the fastener 2 can be sleeved into the installation section on the connecting pipe 3 from the first end of the connecting pipe 3, and the size of the water valve body 1 is configured to prevent the fastener 2 from detaching from the first end of the connecting pipe 3. When assembling the split water valve, the fastener 2 is sleeved into the installation section from the first end of the connecting pipe 3, and then after the water valve body 1 is connected to the first end of the connecting pipe 3, the presence of the water valve body 1 will prevent the fastener 2 from slipping off and detaching from the first end of the connecting pipe 3. Thus, after the split water valve is assembled, the fastener 2 can only slide and rotate on the installation section of the connecting pipe 3. Among them, there are various connection methods between the water valve body 1 and the first end of the connecting pipe 3, and specific ones are not limited. In this embodiment, the water valve body 1 is welded to the first end of the connecting pipe 3. When assembling the split water valve in this embodiment, first, the fastener 2 is sleeved onto the installation section of the connecting pipe 3 from the first end of the connecting pipe 3, and then the water valve body 1 is welded to the first end of the connecting pipe.

[0034] A first sealing portion is provided at the second end of the connecting pipe 3. The first sealing portion is used to cooperate with the second sealing portion on the endoscope to form a sealing structure, so as to achieve the sealing when the second end of the connecting pipe 3 is docked with the perfusion pipeline on the endoscope. Specifically, in this embodiment, the first sealing portion is a sealing ring 4 sleeved on the circumferential direction of the second end of the connecting pipe 3, and the second sealing portion on the endoscope can be the annular side wall in the installation channel. After the split water valve is installed, the annular side wall at the second end of the connecting pipe 3 cooperates with the annular side wall in the installation channel to compress the sealing ring 4, thereby achieving sealing. Of course, in other embodiments, the first sealing portion and the second sealing portion can also be other structural forms, which are not limited here.

[0035] The positioning and anti-rotation structure is the bump 5 provided on the end face of the second end of the connecting pipe 3. Specifically, there are two bumps 5 provided on the end face of the second end of the connecting pipe 3, and the two bumps 5 are centrosymmetric about the axis of the connecting pipe 3; there are grooves corresponding to the bumps 5 in the installation channel of the endoscope. The setting of the bumps 5 enables the split water valve to be directly blindly installed on the endoscope, and after the blind installation, the angle, orientation, and position of the split water valve all meet the requirements, that is, the angle, orientation, and position of the split water valve are the same each time after the blind installation. Specifically, when docking the connecting pipe 3 with the perfusion pipeline on the endoscope, there is no need to align in advance. Only need to insert the second end of the connecting pipe 3 into the installation channel on the endoscope. When it can no longer be inserted, rotate the connecting pipe 3. When the bump 5 falls into the corresponding groove in the installation channel (the operator will have an obvious feeling, and after the bump 5 falls into the corresponding groove, the connecting pipe 3 cannot be rotated anymore as long as it does not move outwards), the second end of the connecting pipe 3 is docked with the perfusion pipeline, thus achieving blind installation.

[0036] Since the outer wall of the fastener 2 is provided with external threads, and when the fastener 2 is screwed tightly with the external threads of the installation channel, the fastener 2 will extend into the installation channel. Therefore, how to drive the fastener 2 to rotate becomes a difficult point. For this reason, in this embodiment, a connecting portion is provided on the end face of the fastener 2 facing the first end of the connecting pipe 3 and an installation tool 6 is designed in cooperation to solve this problem. Among them, the connecting portion is used for the connection of the installation tool 6 to enable the installation tool 6 to drive the fastener 2 to rotate in the installation channel of the endoscope.

[0037] Specifically, the connecting portion is a plurality of grooves provided on the end face of the fastener 2 facing the first end of the connecting pipe 3, and the plurality of grooves are distributed along the circumferential direction of the fastener 2.

[0038] The installation tool 6 is as Figure 3 and Figure 4As shown, the overall shape is that of a hexagonal nut, but instead of a threaded hole inside, it is a through-hole; the installation tooling 6 consists of two parts, and the two parts are movably connected so that the side of the installation tooling 6 can be opened to form a channel. Through this channel, the installation tooling 6 can be sleeved onto the installation section of the connecting pipe 3 of the split water valve, and then the two parts are combined so that the channel disappears to form the shape of a hexagonal nut; on one end face of the installation tooling 6, there are protrusions corresponding to the grooves on the fastener 2. When the two parts of the installation tooling 6 are combined and the protrusions on the installation tooling 6 are engaged into the grooves on the fastener 2, by driving the installation tooling 6 to rotate, the fastener 2 can be driven to rotate; and the hexagonal nut shape of the installation tooling 6 enables it to be easily driven by tools such as a wrench. During actual use, the fastener 2 is gradually screwed into the endoscope installation channel, and the installation tooling 6 always remains outside the installation channel, facilitating the driving by tools such as a wrench; or, the size of the installation tooling 6 can also be designed to be able to enter the installation channel. In this way, as long as the fastener 2 is screwed in until it abuts against the limiting surface, part of the installation tooling 6 can remain outside the installation channel for driving by tools such as a wrench.

[0039] Among them, there are various ways of movably connecting the two parts of the installation tooling 6. For example, it can be rotatably connected through a rotating shaft, etc., and no specific limitation is made. In other embodiments, the connecting part and the installation tooling 6 can also adopt other structures. For example, the connecting part is a protrusion, and the installation tooling 6 is provided with corresponding grooves, etc., and no limitation is made here.

[0040] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, provided that these changes fall within the scope of the claims of the present invention and their equivalent technologies, they still fall within the protection scope of the present invention.

Claims

1. A split water valve used in endoscopes, characterized in that: It includes a water valve body, a connecting pipe and a fastener; the output end of the water valve body is connected to the first end of the connecting pipe, and the second end of the connecting pipe is used to extend into the installation channel of the endoscope and connect with the input end of the perfusion pipeline on the endoscope; The connecting pipe has a mounting section, the mounting section being located between the first end and the second end of the connecting pipe; the fastener is provided with a sliding hole, the fastener is sleeved and mounted on the mounting section of the connecting pipe through the sliding hole, and the fastener and the connecting pipe are configured such that the fastener can move along the axis of the mounting section and rotate around the axis of the mounting section on the mounting section of the connecting pipe; The fastener is provided with an external thread, and the fastener is threadably connected to the internal thread on the mounting channel of the endoscope through the external thread; The second end of the connecting tube is provided with a positioning anti-rotation structure, which is used to position the second end of the connecting tube when it is docked with the perfusion pipeline on the endoscope and prevent the connecting tube from rotating.

2. The split water valve for endoscope according to claim 1, characterized in that: An end portion of the mounting section close to the second end of the connecting tube is provided with a limiting surface toward the first end of the connecting tube, for limiting the position of the fastener when it penetrates into the mounting channel on the endoscope through a threaded connection.

3. The split-type water valve for endoscope according to claim 1, characterized in that: A first sealing portion is provided at the second end of the connecting tube, and the first sealing portion is used to cooperate with the second sealing portion on the endoscope to form a sealing structure to achieve sealing when the connecting tube is connected to the endoscope irrigation pipeline.

4. The split-type water valve for endoscope according to claim 3, characterized in that: The first sealing portion is a sealing ring sleeved on the circumference of the second end of the connecting pipe.

5. The split-type water valve for endoscope according to claim 1, characterized in that: The positioning and anti-rotation structure is a convex point arranged on the end surface of the second end of the connecting pipe.

6. The split-type water valve for endoscope according to claim 5, characterized in that: Two protrusions are provided on the end surface of the second end of the connecting pipe, and the two protrusions are symmetrical about the axis of the connecting pipe.

7. The split-type water valve for endoscope according to claim 1, characterized in that: A connecting portion is provided on the end surface of the fastener facing the first end of the connecting tube, and the connecting portion is used for connecting with an installation tool so that the installation tool drives the fastener to rotate in the installation channel of the endoscope.

8. The split-type water valve for endoscope according to claim 7, characterized in that: The connecting portion is a plurality of grooves provided on the end surface of the fastener facing the first end of the connecting pipe, and the plurality of grooves are distributed along the circumference of the fastener.

9. The split water valve for endoscope according to claim 1 or 2, characterized in that: The first end of the connecting pipe is configured so that the fastener can be inserted from the first end of the connecting pipe into the installation section on the connecting pipe.

10. The split-type water valve for endoscope according to claim 9, characterized in that: The water valve body is connected to the first end of the connecting pipe by welding, and the size of the water valve body is configured to prevent the fastener from being separated from the first end of the connecting pipe.

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