Connector converter and connector

Abstract

The utility model relates to the field of medical instruments, and provides a connector converter and a connector, the connector converter comprises a shell, a sealing gasket and a locking plate, a channel is arranged in the shell, a connector at one end of the channel can be connected with a connector for instrument placement and / or water injection, and a first sealing gasket is arranged at the other end of the channel; the locking plate is movably arranged at the bottom of the shell so as to press the endoscope forceps channel opening on the first sealing gasket and enable the endoscope forceps channel to be communicated with the channel, in the actual application process, after the endoscope forceps channel opening abuts against the first sealing gasket, the endoscope forceps channel is communicated with the channel, then the locking plate is moved, and the endoscope forceps channel is locked through the locking plate. When an instrument is placed in the channel, the locking plate abuts against or clamps a plain end step of an endoscope forceps channel opening, so that the endoscope forceps channel opening is tightly pressed on the first sealing gasket, and therefore, when the instrument is placed in the channel, a water injection function can be realized through the connector, the situation that the instrument needs to be withdrawn from the forceps channel is avoided, the operation time is greatly shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a connector converter and a connector. Background Art

[0002] In endoscopic surgery, endoscopes generally do not have a separate water injection channel. For example, in the anterior gastroenterology department, if water needs to be injected through the clamp channel of the instrument (e.g., endoscope), the instrument needs to be withdrawn from the clamp channel, and then the water injection is performed. After the water injection is completed, the instrument is placed into the clamp channel. The above water injection method greatly prolongs the operation time and reduces the operation efficiency. Utility Model Content

[0003] The embodiment of the present application provides a joint converter and a joint, so that water can be injected simultaneously when the instrument is inside the forceps channel, thereby shortening the operation time and improving the operation efficiency.

[0004] A connector converter provided in a first aspect of an embodiment of the present application includes:

[0005] A housing, wherein a channel is provided in the housing, an interface at one end of the channel can be connected to a joint for inserting an instrument and / or injecting water, and a first sealing gasket is provided at the other end;

[0006] The locking plate is movably arranged at the bottom of the shell to press the endoscope clamp channel opening onto the first sealing pad and connect the endoscope clamp channel with the passage.

[0007] In one implementation, the locking plate is provided with a notch through which the flat step of the endoscope forceps opening can pass, and a card interface that can be carded with the flat step of the endoscope forceps opening;

[0008] When the locking plate moves to the first position, the notch is opposite to the first sealing gasket, so that the flat step of the endoscope clamp opening passes through the notch, and the endoscope clamp opening abuts against the first sealing gasket;

[0009] When the locking plate moves to the second position, the card interface is opposite to the first sealing gasket and is engaged with the flat step of the endoscope forceps opening to press the endoscope forceps opening onto the first sealing gasket and connect the endoscope forceps channel with the passage.

[0010] In one implementation, at least one elastic device is provided between the locking plate and the housing;

[0011] When the locking plate is in a free state, the elastic device drives the locking plate to move from the first position to the second position, and / or fixes the locking plate at the second position.

[0012] In one implementation, the notch and the card interface form a connected double circular hole structure;

[0013] or,

[0014] The notch and the card interface form a step groove structure that is connected;

[0015] or,

[0016] The notch is a long strip hole structure, and the card interface is a round hole structure connected to the notch;

[0017] or,

[0018] The notch and the card interface form a connected narrow slot structure, and the width of the narrow slot structure gradually decreases from one end of the notch to one end of the card interface.

[0019] In one implementation, the elastic device is arranged on the locking plate, and the housing is provided with a fixing device cooperating with the elastic device;

[0020] or,

[0021] The elastic device is arranged on the housing, and the locking plate is provided with a fixing device cooperating with the elastic device;

[0022] The elastic device comprises a column and a spring arranged on the column.

[0023] In one implementation, a first sliding body is disposed on the locking plate, and a second sliding body slidably matched with the first sliding body is disposed on the housing, so that the locking plate can be movably disposed on the housing.

[0024] In one implementation, the first sliding body is a sliding groove, and the second sliding body is a sliding block disposed in the sliding groove;

[0025] or,

[0026] The first sliding body is a sliding block, and the second sliding body is a sliding groove.

[0027] In one implementation, the top of the channel is a Luer connector or a stepped flat connector.

[0028] In one implementation, the first sealing gasket includes a deformable conical opening and an elastic blocking piece arranged inside the conical opening;

[0029] The conical opening is used to be close to the opening of the endoscope forceps channel, and the elastic blocking piece forms an elastic channel for instruments to pass through.

[0030] A second aspect of the embodiment of the present application provides a connector, including the connector converter provided by the first aspect of the embodiment of the present application, and a Y-type three-way connector;

[0031] The Y-shaped three-way connector includes an instrument cavity, a water injection cavity and a main cavity which are interconnected; the main cavity is connected to the channel of the connector converter, the instrument cavity is used for inserting instruments, and the water injection cavity is used for injecting water.

[0032] In one implementation, the Y-shaped three-way connector further includes an outer shell cap that can be disposed on the top of the instrument cavity, and a second sealing gasket is disposed between the outer shell cap and the instrument cavity;

[0033] The outer shell cap is provided with a first boss, and the outer wall of the instrument cavity is provided with a second boss which can be clamped with the first boss.

[0034] In one implementation, the top of the instrument cavity is a threaded joint or a stepped flat joint; when the top of the instrument cavity is a threaded joint, the outer shell cap is provided with threads connected to the threaded joint.

[0035] A connector converter and connector provided in an embodiment of the present application have a channel set in a shell, an interface at one end of the channel can be connected to a connector for inserting instruments and / or injecting water, a sealing gasket is set at the other end, and a movable locking plate is set on the shell. In actual application, after the opening of the endoscope forceps abuts the sealing gasket, the endoscope forceps channel is connected to the channel, and then the locking plate is moved to make the locking plate abut or clamp the flat step of the opening of the endoscope forceps channel, thereby pressing the opening of the endoscope forceps channel against the sealing gasket. In this way, when an instrument is placed in the channel, the water injection function can be realized simultaneously through the connector, thereby avoiding the need to withdraw the instrument from the forceps channel, greatly reducing the operation time and improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] Figure 1 A schematic diagram of the overall structure of a connector converter provided in an embodiment of the present application;

[0038] Figure 2 for Figure 1 A schematic cross-sectional view of the provided connector converter;

[0039] Figure 3 A schematic cross-sectional view of a housing provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of the sealing gasket provided in an embodiment of the present application;

[0041] Figure 5 for Figure 4A schematic cross-sectional view of a provided sealing gasket;

[0042] Figure 6 A schematic diagram of a first structure of a notch and a card interface provided in an embodiment of the present application;

[0043] Figure 7 A second structural schematic diagram of a notch and a card interface provided in an embodiment of the present application;

[0044] Figure 8 A third structural schematic diagram of a notch and a card interface provided in an embodiment of the present application;

[0045] Fig. 9 A fourth structural schematic diagram of a notch and a card interface provided in an embodiment of the present application;

[0046] Fig.10 A fifth structural schematic diagram of a notch and a card interface provided in an embodiment of the present application;

[0047] Fig.11 A schematic diagram of the structure of the elastic device provided in an embodiment of the present application;

[0048] Fig.12 A schematic diagram of the structure of a fixing device provided in an embodiment of the present application;

[0049] Fig.13 A schematic diagram of the structure of a column and a spring provided in an embodiment of the present application;

[0050] Fig.14 A schematic diagram of a first structure of a first sliding body and a second sliding body provided in an embodiment of the present application;

[0051] Fig.15 A second structural schematic diagram of a first sliding body and a second sliding body provided in an embodiment of the present application;

[0052] Fig.16 A schematic diagram of the overall structure of a connector provided in an embodiment of the present application;

[0053] Fig.17 for Fig.16 A schematic cross-sectional view of the provided joint;

[0054] Fig.18 A schematic diagram of a structure in which the top of the instrument cavity provided in the embodiment of the present application is configured as a threaded joint;

[0055] Fig.19 This is a schematic diagram of the structure in which the top of the instrument cavity provided in the embodiment of the present application is configured as a stepped flat-end joint.

[0056] In the figure:

[0057] 1-shell, 11-channel, 2-first sealing gasket, 21-conical mouth, 22-elastic baffle, 3-locking plate, 31-notch, 32-card interface, 4-elastic device, 41-column, 42-spring, 5-fixing device, 6-first sliding body, 7-second sliding body, 8-Y-type three-way connector, 81-instrument cavity, 811-second boss, 82-water injection cavity, 83-main cavity, 84-shell cap, 841-first boss, 85-second sealing gasket. DETAILED DESCRIPTION

[0058] To facilitate the technical solution of the present application, some concepts involved in the present application are first explained below.

[0059] Conventional endoscopic forceps ports are generally configured as flat steps, which cannot match most standard parts. For example, a standard Y-type connector provided with a Luer connector cannot be directly connected to an endoscopic forceps port.

[0060] In endoscopic surgery, in order to simultaneously perform water injection surgery when the instrument is inside the forceps channel, an embodiment of the present application provides a connector converter and a connector.

[0061] like Figure 1 As shown, a connector converter provided in a first aspect of an embodiment of the present application includes a housing 1 and a locking plate 3, wherein, as Figure 2 and Figure 3 As shown, the interface at one end of the channel 11 of the housing 1 can be connected to a connector for inserting instruments and / or injecting water, such as Figure 2 As shown, the end of the channel 11 is connected to the cavity structure, and a first sealing gasket 2 is arranged in the cavity structure at the end of the channel 11. The first sealing gasket 2 provided in the embodiment of the present application is made of silicone material, and its upper part is tightly matched with the shell, and the lower conical mouth 21 can be pressed at the endoscope clamp mouth for sealing. The locking plate 3 is movably arranged at the bottom of the shell 1.

[0062] In actual application, after the opening of the endoscopic forceps channel abuts against the first sealing gasket 2, the endoscopic forceps channel is connected to the channel 11, and then the locking plate 3 is moved to make the locking plate 3 abut against or clamp the flat step of the opening of the endoscopic forceps channel, thereby pressing the opening of the endoscopic forceps channel against the first sealing gasket 2. In this way, when an instrument is placed in the channel 11, the water injection function can be simultaneously realized through the connector connected to one end of the channel 11, thereby avoiding the need to withdraw the instrument from the forceps channel, greatly reducing the operation time and improving the operation efficiency.

[0063] In actual application, the top of the channel 11 can be set to a Luer connector, for example, a male Luer connector or a female Luer connector. The Luer connector can adapt to more standard connectors, for example, a standard Y-type three-way connector. Alternatively, the top of the channel 11 can be set to a flat connector or a stepped flat connector to adapt to different connectors.

[0064] Specifically, the locking plate 3 is provided with a notch 31 for the flat step of the endoscope forceps opening to pass through, and a card interface 32 that can be carded with the flat step of the endoscope forceps opening; wherein the minimum aperture of the notch 31 is larger than the flat step of the endoscope forceps opening, and the aperture size of the card interface 32 can enable the card interface 32 to carded with the flat step of the endoscope forceps opening. In actual use, the locking plate 3 is moved to the first position, at which time the notch 31 is opposite to the first sealing gasket 2, and then, the flat step of the endoscope forceps opening is passed through the notch 31, and the endoscope forceps opening is abutted against the first sealing gasket 2, so that the endoscope forceps channel is connected to the channel 11, and then, the locking plate 3 is moved to the second position, at which time the card interface 32 is opposite to the first sealing gasket 2, so that the card interface 32 carded with the inner side of the flat step of the endoscope forceps opening, so that the endoscope forceps opening is pressed against the first sealing gasket 2.

[0065] It should be noted that Figure 2 For example, the clamping interface of the locking plate 3 clamping the flat step of the endoscope forceps opening refers to the upper surface of the locking plate 3 clamping the lower side of the flat step of the endoscope forceps opening.

[0066] like Figure 6 As shown, the notch 31 and the card interface 32 form a double circular hole structure that is connected, that is, a gourd-shaped opening structure, or, as shown in FIG. Figure 7 As shown, the notch 31 and the card interface 32 form a connected stepped groove structure, or, as shown in FIG. Figure 8 As shown, the notch 31 is a long strip hole structure, and the card interface 32 is a round hole structure. Fig. 9 and Fig.10 As shown, the notch 31 and the card interface 32 form a connected narrow slot structure, and the width of the narrow slot structure gradually decreases from one end of the notch 31 to one end of the card interface 32. Fig.11 As shown, the notch 31 and the card interface 32 can be configured as a structure with an inner circle having an arc, or as Fig.12 As shown, the notch 31 and the card interface 32 refer to the end areas of the narrow slot. In other words, the narrow slot structure is a trapezoidal or trapezoidal-like structure. The card interface 32 and the notch 31 are formed in the areas close to the upper and lower bases of the trapezoid, respectively, and the area between the two waists of the trapezoid forms a channel connecting the notch 31 and the card interface 32.

[0067] Among them, the diameter or the minimum side length of the notch 31 is larger than the outer diameter of the flat step of the endoscopic forceps opening, and the diameter or the step groove width of the card interface 32 is smaller than the outer diameter of the flat step of the endoscopic forceps opening, so that the endoscopic forceps can pass through the notch 31 and can be clamped to the inner side of the flat step of the endoscopic forceps opening through the card interface 32.

[0068] In order to make the operation of the connector converter more convenient, in some embodiments of the present application, at least one elastic device 4 is arranged between the locking plate 3 and the shell 1; so that when the locking plate 3 is in a free state, the elastic device 4 drives the locking plate 3 to move from the first position to the second position, and / or fixes the locking plate 3 in the second position, that is, when the endoscope clamp port needs to be connected, the operator controls the locking plate 2 to move to the first position, and when the endoscope clamp port passes through the notch 31 and the endoscope clamp port abuts the first sealing gasket 2, the operator releases the locking plate 2, so that the elastic device 4 drives the locking plate 3 to move from the first position to the second position, and fixes the locking plate 3 in the second position.

[0069] Specifically, Fig.13 As shown, the elastic device 4 includes a column 41 and a spring 42 disposed on the column 41, for example, Fig.11 As shown, the elastic device 4 is arranged on the locking plate 3, as shown in Fig.12 As shown, a fixing device 5 cooperating with the elastic device 4 is provided on the shell 1. For example, the fixing device 5 is set as a groove structure for placing the column 41; or, the elastic device 4 can also be set on the shell 1, and the fixing device 5 can be set on the locking plate 3.

[0070] During actual use, the locking plate 3 is moved to the first position by pressing or pulling. After the locking plate 3 is released, the locking plate 3 is in a free state, and thus moves and is fixed in the second position under the action of the elastic device 4. Whether the locking plate 3 is moved to the first position by pressing or pulling can be achieved by the setting position or setting method of the elastic device.

[0071] In order to prevent the locking plate 3 from being separated from the housing 1 during the movement of the locking plate 3, in some embodiments of the present application, a first sliding body 6 is provided on the locking plate 3, and a second sliding body 7 that slidably cooperates with the first sliding body 6 is provided on the housing 1, so that the locking plate 3 can be movably arranged on the housing 1. Specifically, Fig.14 As shown, the first sliding body 6 is a sliding groove, and the second sliding body 7 is a sliding block arranged in the sliding groove. Fig.15 As shown, the first sliding body 6 can also be set as a sliding block, and the second sliding body 7 can be set as a sliding groove. In this way, the locking plate 3 can be moved between the first position and the second position by sliding the sliding block in the sliding groove, and the sliding groove is used to limit the movement range of the sliding block to prevent the locking plate 3 from detaching from the shell 1.

[0072] It should be noted that there are multiple first sliding bodies 6 and second sliding bodies 7. For example, the first sliding bodies 6 and second sliding bodies 7 are disposed on both sides of the locking plate 3 to enable the locking plate 3 to move more smoothly.

[0073] In order to achieve better sealing effect, such as Figure 4 and Figure 5 As shown, in some embodiments of the present application, the first sealing gasket 2 includes a deformable conical opening 21, and, as shown in FIG. Figure 5 As shown, the first sealing gasket 2 also includes an elastic baffle 22 arranged inside the tapered mouth 21; wherein, an elastic channel for the instrument to pass through is formed on the elastic baffle 22, and the tapered mouth 21 is used to fit closely to the endoscope forceps opening. During actual use, when the instrument passes through the elastic channel, the size of the elastic channel will expand, so that the elastic baffle 22 fits closely to the outer wall of the instrument, and the tapered mouth 21 is pressed against the endoscope forceps opening and can produce a certain deformation, thereby enhancing the sealing performance.

[0074] A second aspect of the present application provides a connector, such as Fig.16 As shown, the connector includes the connector converter provided in the first aspect of the embodiment of the present application, and a Y-type three-way connector 8 connected to the connector converter; wherein the Y-type three-way connector 8 includes an instrument cavity 81, a water injection cavity 82 and a main cavity 83 which are interconnected; the main cavity 83 is connected to the channel 11 of the connector converter, the instrument cavity 81 is used for inserting instruments, and the water injection cavity 82 is used for water injection.

[0075] The main cavity 83 and the channel 11 may be movably connected, for example, by a Luer connector, or the top of the channel 11 may be configured as a flat connector or a stepped flat connector, or may be directly configured as an integrated structure in a fixed manner.

[0076] During use, when water needs to be injected through the water injection channel 82, the instrument channel 81 needs to be blocked. Fig.17 As shown, in some embodiments of the present application, the connector further includes an outer shell cap 84 that can be connected to the instrument lumen 81 to block the instrument lumen 81 when water is injected.

[0077] In actual application, Fig.18 As shown, the top of the instrument cavity 81 is set as a threaded joint, and the outer shell cap 84 is generally set as a transparent structure, and is threadedly matched with the threaded joint at the top of the instrument cavity 81, so that the outer shell cap 84 forms a knob structure set at the top of the instrument cavity 81, as shown in FIG. Fig.17 As shown, a second sealing gasket 85 is provided at the bottom of the outer shell cap 84. When the outer shell cap 84 is screwed onto the top of the instrument cavity 81, the second sealing gasket 85 between the outer shell cap 84 and the top of the instrument cavity 81 is pressed, and the instrument cavity 81 and the inserted instrument are tightly fitted with the second sealing gasket 85, so that when water is injected, the liquid will not flow out from the opening at the top of the instrument cavity 81. When the outer shell cap 84 is loosened, the second sealing gasket 85 is relaxed, and the inserted instrument can freely enter and exit the instrument cavity 81.

[0078] like Fig.17As shown, the outer shell cap 84 is provided with a first boss 841, and the outer wall of the instrument cavity 81 is provided with a second boss 842, and one side of the second boss 842 is provided with a slope structure. In this way, when the outer shell cap 84 is installed in the instrument cavity 81, the first boss 841 can pass over the slope structure of the second boss 811 under a certain force. When in use, the outer shell cap 84 can be prevented from being separated from the top of the instrument cavity 81 through the clamping action of the first boss 841 and the second boss 811.

[0079] In actual application, Fig.19 As shown, the top of the instrument channel 81 can also be set as a stepped flat joint. The setting of the stepped flat joint can facilitate the use of the instrument channel 81 and the forceps channel cap. In actual surgery, the operator can choose an instrument with a stepped flat joint on the top of the instrument channel 81 according to actual conditions, or select an instrument with a threaded joint on the top of the instrument channel 81. Correspondingly, when the top of the instrument channel 81 is a threaded joint, the outer shell cap 84 is provided with threads connected to the threaded joint.

[0080] It should be noted that when the top of the instrument lumen 81 is a stepped flat-end joint, a sealing structure corresponding to the stepped flat-end joint (similar to the structure of the outer shell cap 84) is generally not provided. At this time, the stepped flat-end joint at the top of the instrument lumen 81 is equivalent to the opening of the endoscopic forceps, that is, the stepped flat-end joint at the top of the instrument lumen 81 is used to realize the function of the opening of the endoscopic forceps.

[0081] A connector converter and connector provided in an embodiment of the present application are provided with a channel 11 in a shell 1, an interface at one end of the channel 11 can be connected to a connector for inserting instruments and / or injecting water, a first sealing gasket 2 is provided at the other end, and a movable locking plate is provided on the shell 1. In actual application, after the endoscopic forceps opening first abuts the sealing gasket 2, the endoscopic forceps channel is connected to the channel 11, and then the locking plate 3 is moved to make the locking plate 3 abut or clamp the inner side of the flat step of the endoscopic forceps opening, thereby pressing the endoscopic forceps opening against the first sealing gasket 2. In this way, when an instrument is placed in the channel 11, the water injection function can be simultaneously realized through the connector, thereby avoiding the need to withdraw the instrument from the forceps channel, greatly reducing the operation time and improving the operation efficiency.

[0082] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A connector converter, characterized in that: include: A housing (1), wherein a channel (11) is arranged in the housing (1), an interface at one end of the channel (11) can be connected to a joint for inserting an instrument and / or injecting water, and a first sealing gasket (2) is arranged at the other end; A locking plate (3) is movably arranged at the bottom of the housing (1) to press the endoscope clamp channel opening onto the first sealing pad (2) and connect the endoscope clamp channel with the channel (11).

2. A connector adapter according to claim 1, characterized in that: The locking plate (3) is provided with a notch (31) through which the flat step of the endoscope forceps opening can pass, and a clamping interface (32) that can clamp the flat step of the endoscope forceps opening; When the locking plate (3) moves to the first position, the notch (31) is directly opposite to the first sealing gasket (2), so that the flat step of the endoscope clamp opening passes through the notch (31), and the endoscope clamp opening abuts against the first sealing gasket (2); When the locking plate (3) moves to the second position, the card interface (32) is opposite to the first sealing gasket (2) and is engaged with the flat step of the endoscope clamp opening, so as to press the endoscope clamp opening onto the first sealing gasket (2) and connect the endoscope clamp opening with the channel (11).

3. A connector adapter according to claim 2, characterized in that: At least one elastic device (4) is provided between the locking plate (3) and the housing (1); When the locking plate (3) is in a free state, the elastic device (4) drives the locking plate (3) to move from the first position to the second position, and / or fixes the locking plate (3) in the second position.

4. A connector adapter according to claim 2 or 3, characterized in that: The notch (31) and the card interface (32) form a connected double circular hole structure; or, The notch (31) and the card interface (32) form a communicating stepped groove structure; or, The notch (31) is a long strip-shaped hole structure, and the card interface (32) is a round hole structure connected to the notch (31); or, The notch (31) and the card interface (32) form a connected narrow slot structure, and the width of the narrow slot structure gradually decreases from one end of the notch (31) to one end of the card interface (32).

5. A connector adapter according to claim 3, characterized in that: The elastic device (4) is arranged on the locking plate (3), and the housing (1) is provided with a fixing device (5) that cooperates with the elastic device (4); or, The elastic device (4) is arranged on the housing (1), and the locking plate (3) is provided with a fixing device (5) that cooperates with the elastic device (4); The elastic device (4) comprises a column (41) and a spring (42) arranged on the column (41).

6. A connector converter according to any one of claims 1 to 3, characterized in that: The locking plate (3) is provided with a first sliding body (6), and the housing (1) is provided with a second sliding body (7) that slidably cooperates with the first sliding body (6), so that the locking plate (3) can be movably arranged on the housing (1).

7. A connector adapter according to claim 6, characterized in that: The first sliding body (6) is a sliding groove, and the second sliding body (7) is a sliding block arranged in the sliding groove; or, The first sliding body (6) is a sliding block, and the second sliding body (7) is a sliding groove.

8. A connector adapter according to claim 1, characterized in that: The top of the channel (11) is a Luer connector or a stepped flat connector.

9. A connector converter according to any one of claims 1 to 3, characterized in that: The first sealing gasket (2) comprises a deformable conical opening (21) and an elastic blocking sheet (22) arranged inside the conical opening (21); The conical opening (21) is used to be closely attached to the opening of the endoscope forceps channel, and an elastic passage for instruments to pass through is formed on the elastic baffle (22).

10. A joint, characterized in that: A connector adapter comprising any one of claims 1 to 9, and a Y-type three-way connector (8); The Y-shaped three-way connector (8) comprises an instrument cavity (81), a water injection cavity (82) and a main cavity (83) which are interconnected; the main cavity (83) is connected to the channel (11) of the connector converter, the instrument cavity (81) is used for inserting instruments, and the water injection cavity (82) is used for injecting water.

11. A joint according to claim 10, characterized in that: The Y-shaped three-way connector (8) further comprises an outer shell cap (84) which can be arranged at the top of the instrument cavity (81), and a second sealing gasket (85) is arranged between the outer shell cap (84) and the instrument cavity (81); The outer shell cap (84) is provided with a first boss (841), and the outer wall of the instrument cavity (81) is provided with a second boss (811) that can be snap-connected with the first boss (841).

12. A joint according to claim 11, characterized in that: The top of the instrument cavity (81) is a threaded joint or a stepped flat joint; When the top of the instrument cavity (81) is a threaded joint, the outer shell cap (84) is provided with threads connected to the threaded joint.

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