Valve body connector and endoscope assembly

Abstract

The utility model discloses a valve body connector and an endoscope assembly, and belongs to the technical field of medical instruments, when a cover body of the valve body connector rotates relative to a body, a convex part can move along a guide groove, and the cover body and the body cooperate with each other, so that relative displacement in a first direction can be generated between the cover body and the body; therefore, the guide pipe part is driven to move relative to the sealing piece in the first direction, the sealing piece can be extruded through the guide pipe part, the cutting groove is opened, the sealing piece is switched to the second state, and the channel can be communicated. And moreover, the guide pipe part can be separated from the sealing element by rotating the cover body, and the sealing element is switched into the first state to seal the channel, so that the leakproofness of the channel is guaranteed. The lead angle theta of the spiral track of the guide groove ranges from 5 degrees to 75 degrees, so that relative rotation between the cover body and the body can be efficiently converted into displacement in the first direction, a doctor can conduct and close a channel through one-hand operation, operation is more convenient, and the operation efficiency can be improved.

Description

Technical Field

[0001] This application belongs to the technical field of medical devices, and particularly relates to a valve body connector and an endoscope assembly. Background Art

[0002] In some surgeries, a valve body connector with a sealing function is often required. Such a connector generally includes two Luer connectors and an instrument channel port. Among them, one Luer head is connected to instrument A, and the other Luer head is connected to instrument B. Instrument C enters instrument A through the instrument channel port and performs various surgical operations after entering the body.

[0003] However, there are some problems with the valve body connectors for endoscopes currently on the market. Its sealing opening and closing structure is relatively complex to operate, which brings inconvenience to doctors during surgeries and thus affects the surgical efficiency. Summary of the Utility Model

[0004] Utility Model Objective: The embodiments of this application provide a valve body connector, aiming to solve the technical problem of the complex operation of the sealing opening and closing structure of the current valve body connector; another objective of the embodiments of this application is to provide an endoscope assembly.

[0005] Technical Solution: A valve body connector described in the embodiments of this application includes:

[0006] A body having a channel extending along a first direction;

[0007] A seal connected to the body and disposed in the channel. The seal has a slit and is configured to close the channel when in a first state and, when in a second state, the slit is opened to enable the channel to conduct;

[0008] An end cap including a connected cover body and a catheter portion. The cover body is sleeved on the body; in the cover body and the body, one is provided with a guide groove and the other is provided with a convex portion. The guide groove extends along a spiral trajectory with a lead angle θ of 5° to 75°, and the convex portion is disposed in the guide groove;

[0009] The end cap is configured such that when the cover body rotates relative to the body, the convex portion moves along the guide groove, causing the cover body to generate a displacement along the first direction relative to the body and driving the catheter portion to move along the first direction relative to the seal, so as to enable the seal to switch between the first state and the second state.

[0010] In some embodiments, in the cover body and the body, one is circumferentially and spacedly provided with a plurality of the guide grooves, and the other is circumferentially and spacedly provided with a plurality of the convex portions, and each convex portion is correspondingly disposed in one of the guide grooves;

[0011] Each of the guide grooves extends along a helical trajectory, and the helical trajectories of the plurality of guide grooves have the same lead angle θ and the same rotation direction, and the plurality of helical trajectories wind around each other.

[0012] In some embodiments, the guide groove has opposite first and second ends;

[0013] When the convex portion is located at the first end, the catheter portion opens the slit to conduct the channel; when the convex portion is located at the second end, the catheter portion is spaced apart from the seal.

[0014] When the convex portion moves from the first end to the second end and from the second end to the first end, the angle by which the cover rotates relative to the body is less than or equal to 360°.

[0015] In some embodiments, the shape of the convex portion is any one of cylindrical, ellipsoidal, and prismatic.

[0016] In some embodiments, the convex portion extends along a helical trajectory, and the helical trajectory of the convex portion matches the helical trajectory of the guide groove.

[0017] In some embodiments, the convex portion includes a plurality of protruding segments spaced apart from each other, and the plurality of protruding segments are arranged along the helical trajectory.

[0018] In some embodiments, the guide groove has a first side wall and a second side wall spaced apart in the first direction, and the first side wall and the second side wall are respectively attached to two opposite sides of the convex portion in the first direction.

[0019] In some embodiments, the convex portion protrudes from the outer peripheral surface of the body, the guide groove is provided on the cover, and the guide groove penetrates the cover along the thickness direction of the cover.

[0020] In some embodiments, the convex portion protrudes from the outer peripheral surface of the body, the guide groove is provided on the cover, and the guide groove is opened on the side of the cover facing the body.

[0021] In some embodiments, the body includes:

[0022] A main body portion, and the channel penetrates the main body portion along the first direction;

[0023] A holding portion, which is provided on one side of the main body portion in the first direction and sleeved on the main body portion, and the holding portion presses the seal against the main body portion;

[0024] The convex portion protrudes from the outer peripheral surface of the holding portion, the cover body is sleeved on the holding portion, and the guide groove is provided on the cover body.

[0025] In some embodiments, the convex portion moves to the second end of the guide groove, causing the catheter portion to move in the first direction to disengage from the seal and be spaced apart from the seal.

[0026] The cover body is provided with a first limiting portion, and the holding portion is provided with a second limiting portion; when the convex portion is located at the second end, the first limiting portion contacts the second limiting portion to limit the convex portion within the guide groove.

[0027] In some embodiments, the convex portion moves to the first end of the guide groove, causing the catheter portion to move in the first direction to squeeze the seal and open the slit to conduct the channel.

[0028] The inner wall of the cover body is provided with a third limiting portion, and the holding portion is provided with a fourth limiting portion; when the convex portion is located at the first end, the third limiting portion contacts the fourth limiting portion to limit the convex portion within the guide groove.

[0029] In some embodiments, the thickness dimension at the central axis OO' of the seal is L 1 , and the thickness dimension at the edge of the seal is L 2 , satisfying: L 1 < L 2 .

[0030] In some embodiments, the seal includes a first surface and a second surface facing away from each other in the first direction, and the catheter portion sequentially penetrates through the first surface and the second surface to open the slit; the first surface is recessed toward the second surface.

[0031] In some embodiments, the first surface is an arc surface; or, the first surface is a combination of multiple types such as an arc surface, a plane perpendicular to the first direction, a plane parallel to the first direction, and an inclined surface inclined to the first direction.

[0032] In some embodiments, the seal is provided with a plurality of the slits, and the plurality of slits are respectively formed on the first surface and the second surface, and the extending directions of the plurality of slits intersect.

[0033] In some embodiments, the slit formed on the first surface is spaced apart from the slit formed on the second surface.

[0034] Correspondingly, an endoscope assembly according to an embodiment of the present application includes:

[0035] An endoscope, and,

[0036] The valve body connector as described above, which is connected to the endoscope, and the channel is in communication with the forceps channel of the endoscope.

[0037] Advantageous effects: The valve body connector of the embodiment of the present application includes: a body having a channel extending along a first direction; a seal connected to the body and disposed in the channel, the seal having a slit, and the seal is configured to close the channel when in a first state and, when in a second state, the slit is opened to enable the channel to conduct; an end cap including a connected cover body and a catheter portion, the cover body sleeved on the body; in the cover body and the body, one is provided with a guide groove and the other is provided with a convex portion, the guide groove extending along a spiral trajectory with a lead angle θ of 5° to 75°, the convex portion disposed in the guide groove; the end cap is configured such that when the cover body rotates relative to the body, the convex portion moves along the guide groove, causing the cover body to generate a displacement in the first direction relative to the body and driving the catheter portion to move in the first direction relative to the seal, so as to enable the seal to switch between the first state and the second state. In the embodiment of the present application, one of the cover body and the body of the valve body connector is provided with a guide groove and the other is provided with a convex portion disposed in the guide groove, and when the cover body rotates relative to the body, the convex portion can move along the guide groove. Since the guide groove extends along a spiral trajectory, it can cooperate with the convex portion to enable a relative displacement in the first direction between the cover body and the body, thereby driving the catheter portion connected to the cover body to move in the first direction relative to the seal, and then being able to squeeze the seal through the catheter portion to open the cut groove and switch the seal to the second state to enable conduction with the channel. Moreover, by rotating the cover body, the catheter portion can also be separated from the seal, and the seal can be switched to the first state to close the channel and ensure the tightness of the channel. The lead angle θ of the spiral trajectory along which the guide groove extends is 5° to 75°, enabling the relative rotation between the cover body and the body to be efficiently converted into a displacement in the first direction, enabling the doctor to rotate the cover body with one hand and achieve the conduction and closing of the channel, making the operation more convenient and capable of improving the efficiency of the operation.

[0038] The endoscope assembly of the embodiment of the present application includes an endoscope and the valve body connector as described above, the valve body connector being connected to the endoscope, and the channel being in communication with the forceps channel of the endoscope. Therefore, this endoscope assembly can include all the technical features and advantageous effects of the above valve body connector, which will not be elaborated herein. Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0040] Figure 1 Schematic structural diagram of the valve body connector according to some embodiments of the present application;

[0041] Figure 2 Exploded structural diagram of the parts of the valve body connector according to some embodiments of the present application;

[0042] Figure 3 Schematic side view structure diagram of the valve body connector according to some embodiments of the present application;

[0043] Figure 4 is Figure 3 Schematic cross-sectional structure diagram of the valve body connector along line A-A in

[0044] Figure 5 Partial cross-sectional view of the seal of the valve body connector in the first state according to some embodiments of the present application;

[0045] Figure 6 Partial cross-sectional view of the seal of the valve body connector in the second state according to some embodiments of the present application;

[0046] Figure 7 Perspective structural diagram of the cover of the valve body connector according to some embodiments of the present application;

[0047] Figure 8 Partial structural diagram of the body of the valve body connector according to some embodiments of the present application;

[0048] Figure 9 Partial structural diagram of the body of the valve body connector according to some embodiments of the present application;

[0049] Figure 10 Partial structural diagram of the body of the valve body connector according to some embodiments of the present application;

[0050] Figure 11 Partial structural diagram of the body of the valve body connector according to some embodiments of the present application;

[0051] Figure 12 Partial side view structure diagram of the body of the valve body connector according to some embodiments of the present application;

[0052] Figure 13 Partial side view structure diagram of the body of the valve body connector according to some embodiments of the present application;

[0053] Figure 14 Partial side view structure diagram of the body of the valve body connector according to some embodiments of the present application;

[0054] Figure 15 Schematic side view structure diagram of the valve body connector according to some embodiments of the present application;

[0055] Figure 16 For Figure 15 Partial sectional view structure diagram of the middle valve body connector along line B-B;

[0056] Figure 17 Perspective structure diagram of the end cover of the valve body connector in some embodiments of the present application;

[0057] Figure 18 Sectional view structure diagram of the end cover of the valve body connector in some embodiments of the present application;

[0058] Figure 19 For Figure 18 Partial enlarged structure diagram of area A in the middle;

[0059] Figure 20 Partial side view structure diagram of the body of the valve body connector in some embodiments of the present application;

[0060] Figure 21 Perspective structure diagram of the seal of the valve body connector in some embodiments of the present application;

[0061] Figure 22 Sectional view structure diagram of the seal of the valve body connector in some embodiments of the present application;

[0062] Figure 23 Sectional view structure diagram of the seal of the valve body connector in some embodiments of the present application;

[0063] Figure 24 Sectional view structure diagram of the seal of the valve body connector in some embodiments of the present application;

[0064] Figure 25 Sectional view structure diagram of the seal of the valve body connector in some embodiments of the present application;

[0065] Figure 26 Structure diagram of the endoscope assembly in some embodiments of the present application;

[0066] Reference numerals: 100 - valve body connector; 110 - body; 111 - channel; 112 - main body portion; 113 - holding portion; 1131 - opening; 1132 - second limiting portion; 1133 - fourth limiting portion; 120 - seal; 121 - slit; 122 - first surface; 123 - second surface; 130 - end cap; 131 - cover body; 1311 - first limiting portion; 1312 - third limiting portion; 1313 - operating portion; 132 - conduit portion; 1321 - guide hole; 140 - guide groove; 141 - first end; 142 - second end; 143 - first side wall; 144 - second side wall; 145 - third side wall; 150 - convex portion; 151 - protruding section; 160 - bypass tube; 200 - endoscope; 210 - forceps channel; 300 - first instrument; 400 - second instrument. Detailed implementation manners

[0067] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0068] In the description of the present application, it should be understood that the terms "proximal end" and "distal end" are based on the surgical operator (medical staff) as a reference. Among them, the "proximal end" is the end of the surgical tool closer to the medical staff, and the "distal end" is the end farther from the medical staff relative to the "proximal end", that is, the end closer to the patient. The orientation or positional relationship indicated by terms such as "length", "thickness", "upper", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. The meaning of the term "plurality" is two or more, and at least one means it can be one, two or more, unless otherwise clearly and specifically defined. The terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0069] In addition, in the description of the present application, the first direction X is introduced to more clearly describe the shape and / or structure of each component in the valve body connector 100, as well as the connection relationship and / or relative position relationship between components. The first direction X is the extending direction of the channel 111. It should be noted that the channel can extend linearly along the first direction X or extend tortuously in the first direction X, as long as the two openings (the proximal opening and the distal opening respectively) of the channel 111 are arranged in the first direction X. In the drawings, a double-arrow line segment marked with X indicates the first direction X, that is, the first direction X can be the direction from the proximal opening to the distal opening of the channel 111 or the direction from the distal opening to the proximal opening of the channel 111.

[0070] As a preface to the present application, some valve body connectors used in clinical procedures are introduced. In some clinical applications, it is required that the valve body connector port still has a certain sealing effect during the process of passing the instrument to prevent phenomena such as liquid injection leakage, which may affect the doctor's operation. Moreover, due to different surgical procedures, the doctor's operating actions and usage scenarios are different, and the detailed requirements for the valve body connector are also different. For example, in hepatobiliary surgery, for the valve body connector used in conjunction with a disposable choledochoscope, the sealing opening and closing structure of its port part mainly includes a screwing type structure and a pressing type structure. The screwing type structure mainly compresses the seal by screwing the gland, so that the seal is compressed and deformed to close the through hole in the middle, achieving the purpose of sealing the channel. This method is relatively cumbersome to operate. When the channel is closed, the resistance for the instrument to pass through is very large, which is not convenient for pushing the instrument. When operating in the open state of the channel, it cannot prevent the problem of liquid injection leakage, which affects the operation. Compared with the screwing type structure, the pressing type structure is relatively simple, and the channel can be opened only by pressing. However, this also poses a risk of misoperation during the operation.

[0071] In view of this, an embodiment of the present application provides a valve body connector 100, aiming to overcome at least one of the above technical problems.

[0072] Please refer to Figures 1 to 6 simultaneously. A valve body connector 100 provided by an embodiment of the present application includes a body 110, a seal 120, and an end cap 130.

[0073] A channel 111 is provided in the body 110, and the channel 111 is extended along the first direction X, and is used to pass through some medical instruments (hereinafter referred to as instruments) used in the operation. During the operation, medical staff can insert the required instruments into the channel 111 through the proximal end of the channel 111, and pass the instruments out of the body 110 from the distal end of the channel 111. In some embodiments, the body 110 can be configured to be a roughly tubular structure, and the first direction X corresponds to the length direction of the tubular structure, and the channel 111 extends inside the tubular structure. Of course, in some other embodiments, the body 110 can also be configured to be other shapes according to actual needs. For example, it can be configured to be a square box-type structure, and the channel 111 extends along the box body of the box-type structure. In some embodiments, a Luer connector can be provided at the distal end of the body 110 for connecting surgical instruments such as an endoscope.

[0074] The sealing member 120 is connected to the body 110 and is disposed in the channel 111. Specifically, the sealing member 120 can be disposed in the body 110 and cover one end of the channel 111, for example, Figure 4 and Figure 5 In the illustrated embodiments, the seal 120 covers the proximal end of the channel 111. The seal 120 has a slit 121, and the seal 120 is configured to close the channel 111 when in a first state, and to open the slit 121 to conduct the channel 111 when in a second state. That is, in the first state, the slit 121 of the seal 120 is in a closed state, and the seal 120 can close the channel 111; in the second state, the slit 121 of the seal 120 is opened, and the channel 111 can be conducted.

[0075] The end cover 130 includes a cover body 131 and a conduit portion 132 connected to each other. The cover body 131 is sleeved on the main body 110. One of the cover body 131 and the main body 110 is provided with a guide groove 140, and the other is provided with a convex portion 150. The guide groove 140 extends along a spiral trajectory with a lead angle θ of 5° to 75°, and the convex portion 150 is arranged in the guide groove 140.

[0076] The cover 131 may be configured to be substantially cylindrical, may be disposed at the proximal end of the body 110, and be sleeved on the outer periphery of the body 110. By rotating the cover 131, it can be rotated relative to the body 110. The conduit portion 132 is disposed inside the cover 131, and may be connected to the cover 131 through a substantially annular connecting plate located at the proximal end of the body 110. The conduit portion 132 is substantially tubular, and is used to be inserted into the slit 121 of the sealing member 120, so that its guide hole 1321 can conduct the channel 111.

[0077] like Figure 2As shown, the guide groove 140 can be formed on the cover 131, and the convex portion 150 is provided on the outer peripheral surface of the main body 110. By sleeving the cover 131 on the outer peripheral surface of the main body 110, the convex portion 150 is inserted into the guide groove 140, and can move along the guide groove 140 when the cover 131 rotates relative to the main body 110.

[0078] Alternatively, in some embodiments, the guide groove 140 can be formed on the outer peripheral surface of the main body 110, and the convex portion 150 is provided on the inner wall of the cover 131. By sleeving the cover 131 on the outer peripheral surface of the main body 110, the convex portion 150 is inserted into the guide groove 140, and can also move along the guide groove 140 when the cover 131 rotates relative to the main body 110.

[0079] As Figure 5 and Figure 6 shown (the guide groove 140, the convex portion 150, and the slit 121 of the seal 120 are not shown in the figure, and the above structures are combined in other drawings of the present application), by setting the end cover 130 and the main body 110 as the above structures, the end cover 130 is set such that when the cover 131 rotates relative to the main body 110, the convex portion 150 moves along the guide groove 140, and the guide groove 140 guides the convex portion 150 to generate a displacement in the first direction X. Under the cooperation of the guide groove 140 and the convex portion 150, a relative displacement in the first direction X can be generated between the cover 131 and the main body 110. Thus, the cover 131 drives the conduit portion 132 to move relative to the seal 120 in the first direction X, so that the seal 120 can be switched between the first state and the second state.

[0080] It can be understood that in the embodiment of the present application, one of the cover 131 and the body 110 of the valve body connector 100 is provided with a guide groove 140, and the other is provided with a convex portion 150 disposed in the guide groove 140. When the cover 131 rotates relative to the body 110, the convex portion 150 can move along the guide groove 140. Since the guide groove 140 extends along a spiral trajectory, it can cooperate with the convex portion 150, so that a relative displacement in the first direction X can be generated between the cover 131 and the body 110, thereby driving the conduit portion 132 connected to the cover 131 to move relative to the seal 120 in the first direction X, and then the seal 120 can be squeezed by the conduit portion 132 to open the cut groove so that the seal 120 is switched to the second state to be able to communicate with the channel 111. And, by rotating the cover 131 in the reverse direction, the conduit portion 132 can also be disengaged from the seal 120, and the seal 120 can be switched to the first state to close the channel 111 and ensure the tightness of the channel 111. The lead angle θ of the spiral trajectory along which the guide groove 140 extends is 5° to 75°, so that the relative rotation between the cover 131 and the body 110 can be efficiently converted into a relative displacement in the first direction X, enabling a doctor to rotate the cover 131 with one hand and achieve the opening and closing of the channel 111, making the operation more convenient and improving the efficiency of the operation.

[0081] Specifically, as Figure 6 shown, when the cover 131 rotates relative to the body 110 in a certain rotation direction (clockwise or counterclockwise), under the action of the rotation driving force, the cover 131 and the body 110 can generate a displacement in the rotation direction, so that the convex portion 150 can slide along the guide groove 140 towards one end thereof. Since the guide groove 140 is a spiral structure extending along a spiral trajectory with a lead angle θ of 5° to 75°, a displacement in the first direction X can be generated when the convex portion 150 moves along the guide groove 140. Further, a displacement of the cover 131 relative to the body 110 in the first direction X is generated, driving the conduit portion 132 to gradually approach and squeeze the seal 120, and the slit 121 of the seal 120 is opened due to the squeezing of the conduit portion 132, so that the conduit portion 132 can be inserted into the slit 121 and pass through the slit 121 to communicate with the channel 111.

[0082] As Figure 5As shown, when the cover 131 rotates relative to the main body 110 in the direction opposite to the above-mentioned rotation direction, under the action of the rotational driving force, the cover 131 and the main body 110 can generate a displacement in the opposite direction, so that the convex portion 150 can slide along the guide groove 140 towards the other end thereof. Thus, the convex portion 150 can also generate a displacement in the first direction X, causing the cover 131 to generate a displacement relative to the main body 110 in the first direction X, and driving the catheter portion 132 to gradually disengage from the slit 121 of the seal 120 and gradually move away from the seal 120. At this time, if the instrument is not passed through the slit 121 of the seal 120, the slit 121 of the seal 120 resets to close the passage 111.

[0083] In the embodiment of the present application, the extension trajectory of the guide groove 140 is a spiral trajectory, and the lead angle θ of the spiral trajectory is 5° to 75°. That is to say, the guide groove 140 extends along a three-dimensional spiral path, and this extension trajectory makes the guide groove 140 roughly present a spiral shape. Moreover, the extension trajectory of the guide groove 140 can fit a spiral line in the first direction X. Its lead angle θ is the ratio of the spiral line fitted by the extension trajectory advancing in the first direction X per unit length. As Figure 3 shown, the lead angle θ of the guide groove 140 can be measured by a usual lead angle measuring tool. It is also possible to use a three-dimensional measuring device (such as a coordinate measuring machine or an optical scanner) to obtain the coordinate data of the points on the spiral line, and then these data can be used to calculate the lead angle θ.

[0084] In this application, the lead angle θ of the guide groove 140 is from 5° to 75°, that is, the lead angle θ can be any angular value among 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, 65°, 66°, 67°, 68°, 69°, 70°, 71°, 72°, 73°, 74°, 75° or the range value between any two angular values. Controlling the lead angle θ of the guide groove 140 within the above range enables the relative rotation between the cover body 131 and the main body 110 to be efficiently converted into the relative displacement in the first direction X, enabling the doctor to rotate the cover body 131 with one hand and achieve the opening and closing of the channel 111, making the operation more convenient and improving the surgical efficiency. Within this range, the larger the lead angle θ, the greater the feeding movement of the catheter part 132 along the first direction X when the doctor rotates the cover body 131, making the opening and closing of the valve body connector 100 faster and the operation efficiency higher. Within this range, the smaller the lead angle θ, the higher the tightness and stability of the assembly between the cover body 131 and the main body 110, and the better the doctor's hand feeling during operation. Optionally, the lead angle θ is in the range of 15° to 50°, with better comprehensive performance and stronger operation comfort.

[0085] When the lead angle θ is outside the above range, the larger the lead angle θ, the worse the stability of the combination between the cover body 131 and the main body 110, increasing the risk of misoperation during the operation. When the lead angle θ is smaller, the operation is more cumbersome, and it is necessary to rotate multiple circles to achieve the opening and closing of the valve body connector 100, increasing the difficulty of the doctor's single-handed operation and reducing the convenience of the surgical operation.

[0086] In addition, by providing a slit 121 on the seal 120, the doctor can directly insert the instrument into the slit 121 of the seal 120 during the operation to open the slit 121 and conduct the channel 111, so that the instrument can be sent into the patient's body via the channel 111. Or the operator can also operate the end cover 130, rotate the cover body 131 to insert the catheter part 132 into the slit 121 to open the slit 121 and conduct the channel 111, then insert the instrument through the guide hole 1321 of the catheter part 132 into the channel 111, and send it into the patient's body via the channel 111.

[0087] In some embodiments, the seal 120 can be made of an elastic soft material, such as silicone. Thus, when an instrument is directly inserted into the slit 121 to open the slit 121, the seal 120 can closely adhere to the outer periphery of the instrument, or when the catheter portion 132 is inserted into the slit 121, the seal 120 can closely adhere to the outer periphery of the catheter portion 132, continuously ensuring the sealing performance and preventing the injection liquid from overflowing. When the instrument is withdrawn, or when the operating end cap 130 withdraws the catheter portion 132 from the slit 121, the seal 120 closes the slit 121 through its own elastic restoring force to close the channel 111 and maintain the sealing performance.

[0088] In some embodiments, the end cap 130 can be set as an integral structure, that is, the cover body 131 and the catheter portion 132 can be integrally formed by processing.

[0089] Please refer to Figures 1 to 4 simultaneously. In some embodiments, the cover body 131 further includes an operating portion 1313, which is formed on the outer peripheral surface of the cover body 131. The operating portion 1313 can be provided with a plurality of protrusions and grooves to increase the roughness, facilitating the doctor to rotate the cover body 131 through the operating portion 1313 during the operation.

[0090] Please refer to Figure 7 as shown. In some embodiments, among the cover body 131 and the main body 110, one is provided with a plurality of guide grooves 140 at circumferential intervals, and the other is provided with a plurality of convex portions 150 at circumferential intervals. Each convex portion 150 is correspondingly arranged in one guide groove 140. Each guide groove 140 extends along a spiral track. The spiral tracks of the plurality of guide grooves 140 have the same lead angle θ and the same rotation direction, and the plurality of spiral tracks wind around each other. By providing the plurality of guide grooves 140 arranged at circumferential intervals and the plurality of convex portions 150 arranged at circumferential intervals, the plurality of convex portions 150 and the plurality of guide grooves 140 correspond to each other and cooperate with each other, which can improve the assembly stability of the cover body 131 and the main body 110. By setting the plurality of guide grooves 140 to have spiral tracks that wind around each other, and the spiral tracks have a lead angle θ and the same rotation direction, the plurality of guide grooves 140 are combined to form a multi-spiral line structure. When the cover body 131 is rotated, each convex portion 150 can synchronously slide along the corresponding guide groove 140, and the stability of the relative movement (including relative rotation and displacement in the first direction X) between the end cap 130 and the main body 110 can be improved.

[0091] Among them, the number of the guide grooves 140 and the convex portions 150 can be specifically set according to actual needs. Optionally, the number of the guide grooves 140 and the convex portions 150 can be respectively set to two, which can ensure the structural stability and operation convenience while reducing the processing difficulty.

[0092] Please refer to Figure 5 andFigure 6 and Figure 7 In the valve body connector 100 of the present application, the guide groove 140 has opposite first end 141 and second end 142. Among them, the first end 141 is the distal end of the guide groove 140, and the second end 142 is the proximal end of the guide groove 140. When the convex portion 150 is located at the first end 141, the catheter portion 132 opens the slit 121 to conduct the channel 111; when the convex portion 150 is located at the second end 142, the catheter portion 132 is spaced apart from the seal 120. That is to say, when the cover body 131 is rotated so that the convex portion 150 moves from the second end 142 to the first end 141, the catheter portion 132 gradually approaches the seal 120 and gradually inserts into the slit 121 to open the slit 121. When the cover body 131 is rotated in the opposite direction so that the convex portion 150 moves from the first end 141 to the second end 142, the catheter portion 132 gradually moves away from the seal 120, the catheter portion 132 gradually disengages from the slit 121, and is spaced apart from the seal 120.

[0093] In some embodiments, when the convex portion 150 moves from the first end 141 to the second end 142 and from the second end 142 to the first end 141, the angle by which the cover body 131 rotates relative to the body 110 is less than or equal to 360°. That is to say, when the cover body 131 rotates relative to the body 110 by less than or equal to 360°, the convex portion 150 can move from the first end 141 of the guide groove 140 to the second end 142, or the convex portion 150 can move from the second end 142 of the guide groove 140 to the first end 141. That is, the doctor only needs to rotate the end cover 130 one full turn or less than one full turn to achieve the opening and closing of the seal 120, reducing the operation difficulty and improving the operation convenience. Optionally, when the convex portion 150 moves from the first end 141 to the second end 142 and from the second end 142 to the first end 141, the angle by which the cover body 131 rotates relative to the body 110 is less than or equal to 120°.

[0094] In some embodiments, when the convex portion 150 moves to the first end 141, the groove wall of the guide groove 140 at the first end 141 can limit the position of the convex portion 150; when the convex portion 150 moves to the second end 142, the groove wall of the guide groove 140 at the second end 142 can limit the position of the convex portion 150. The risk of the convex portion 150 coming out of the guide groove 140 is reduced, and thus the risk of the end cover 130 and the body 110 being disengaged from each other during relative movement can be reduced, improving the stability of the device assembly and operation.

[0095] Please refer to Figure 8 、 Figure 9 and Figure 10, in some embodiments, the convex portion 150 may be a boss connected to the outer peripheral surface of the main body 110 or the inner wall of the cover 131, and the shape of the convex portion 150 may be any one of a cylindrical shape, an elliptical cylindrical shape, and a prismatic shape. Setting the convex portion 150 to the above shape facilitates processing and assembly. And setting the convex portion 150 to the above shape makes the size of the convex portion 150 appropriate, so that it is not necessary to set the extended length of the guide groove 140 too long. On the one hand, it meets the requirement of miniaturization of the device, and on the other hand, the moving path of the convex portion 150 in the guide groove 140 is not too long, which can control the conversion amplitude of the rotational motion and the feeding motion and improve the operation convenience.

[0096] Please refer to Figure 11 and Figure 12 , in some embodiments, the convex portion 150 extends along a spiral trajectory, and the spiral trajectory of the convex portion 150 matches the spiral trajectory of the guide groove 140. That is, the rotational directions of the spiral trajectories along which the convex portion 150 extends and the guide groove 140 extends are the same, and the lead angle θ has the same size. In this way, the contact area between the convex portion 150 and the groove wall of the guide groove 140 is larger, so that the cooperation stability between the convex portion 150 and the guide groove 140 is better, and further the combination stability between the end cover 130 and the main body 110 is better, and it is easier for the doctor to rotate the cover 131 relative to the main body 110, improving the operation convenience.

[0097] Please refer to Figure 13 , in some embodiments, the convex portion 150 includes a plurality of protruding segments 151 spaced apart from each other, and the plurality of protruding segments 151 are arranged along a spiral trajectory. By setting the convex portion 150 as a structure of a plurality of spaced-apart protruding segments 151, the material can be reduced and the production cost can be lowered.

[0098] Please refer to Figure 12 and Figure 14 , Figure 12 and Figure 14 Correspond to the partial structural schematic diagrams of the main body 133 in two embodiments of the present application. In the two embodiments, the convex portion 150 extends along a spiral trajectory. It can be understood that the corresponding guide groove 140 also extends along a matching spiral trajectory. The difference is that Figure 12 The corresponding embodiment and Figure 14 The spiral trajectories of the corresponding embodiments have different rotational directions, but both can achieve the same effect. When the doctor operates the valve body connector 100 products of these two embodiments, according to the rotational directions of their respective guide grooves 140 and convex portions 150, rotating the cover 131 in different directions can achieve the same opening and closing effect.

[0099] Please refer to Figure 7 and Figure 19, in some embodiments, the guide groove 140 has a first side wall 143 and a second side wall 144 spaced apart in the first direction X. The first side wall 143 and the second side wall 144 are respectively attached to two opposite sides of the convex portion 150 in the first direction X. Thus, when the convex portion 150 moves along the guide groove 140, the first side wall 143 and the second side wall 144 can respectively guide the convex portion 150, making its sliding in the guide groove 140 more stable. Among them, Figure 7 and Figure 19 correspond to the structures of the guide groove 140 in two different embodiments. In these two embodiments, the guide groove 140 is provided on the cover body 131. It can be understood that although not shown, in other embodiments of the present application, the guide groove 140 is provided on the main body 110, and may also have a first side wall 143 and a second side wall 144. The first side wall 143 and the second side wall 144 can also be attached to two opposite sides of the convex portion 150 in the first direction X to respectively guide the convex portion 150.

[0100] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 7 , in some embodiments, the convex portion 150 protrudes from the outer peripheral surface of the main body 110, the guide groove 140 is provided on the cover body 131, and the guide groove 140 penetrates the cover body 131 along the thickness direction of the cover body 131. That is, the guide groove 140 is a hollow groove provided on the cover body 131. In this way, the height of the convex portion 150 is not affected by the depth of the guide groove 140 and can be made higher, enhancing the guiding and limiting effects of the groove wall of the guide groove 140 on the convex portion 150, and further reducing the risk of the convex portion 150 coming out of the guide groove 140. Moreover, when operating, the doctor can also visually see the position of the convex portion 150 and thereby judge the state of the seal 120 to accurately judge the opening and closing condition of the valve body connector 100.

[0101] Please refer to Figures 11 to 20, in some embodiments, the convex portion 150 protrudes from the outer peripheral surface of the main body 110, the guide groove 140 is provided on the cover body 131, and the guide groove 140 is opened on the side of the cover body 131 facing the main body 110, that is, the guide groove 140 is provided on the inner wall of the cover body 131. The guide groove 140 has a first side wall 143, a second side wall 144 and a third side wall 145. The first side wall 143 and the second side wall 144 are spaced apart in the first direction X. The third side wall 145 is provided between the first side wall 143 and the second side wall 144 and is respectively connected to the first side wall 143 and the second side wall 144. The first side wall 143 and the second side wall 144 are respectively attached to two sides of the convex portion 150 facing away from each other in the first direction X, and the third side wall 145 is attached to the top surface of the convex portion 150. Thus, when the convex portion 150 moves along the guide groove 140, the first side wall 143, the second side wall 144 and the third side wall 145 can respectively guide the convex portion 150, making it slide more stably in the guide groove 140.

[0102] Moreover, by providing the guide groove 140 on the inner wall of the cover body 131, the guide groove 140 and the convex portion 150 can be covered inside the cover body 131, reducing the entry of external debris into the guide groove 140, which may cause the convex portion 150 to jam and unable to move, thus improving the stability of the valve body connector 100. In addition, the first end 141 and the second end 142 of the guide groove 140 in this embodiment can also be set as a closed structure. When the convex portion 150 moves to the first end 141 or the second end 142, the groove walls at the first end 141 or the second end 142 can limit the convex portion 150, reducing the risk of the convex portion 150 disengaging from the guide groove 140, and further reducing the disengagement between the end cover 130 and the main body 110 during the relative movement, thus improving the stability of the device assembly and operation.

[0103] It should be noted that in the embodiments described above, the main body 110 can be an integral structure or a split structure. When it is an integral structure, the seal 120 can be connected to the proximal end of the main body 110 by bonding, keying, etc.; when it is a split structure, the seal 120 can also be connected to the proximal end of the main body 110 by bonding, keying, etc., or by setting the proximal end position of the main body 110 as a split structure and connecting the seal 120 by clamping.

[0104] For example, please refer to Figure 4 and Figure 16, in some embodiments, the body 110 includes a main body portion 112 and a holding portion 113. The channel 111 is disposed within the main body portion 112 and extends through the main body portion 112 along the first direction X. The holding portion 113 is disposed on one side of the main body portion 112 in the first direction X and is sleeved on the main body portion 112. The seal 120 is disposed between the main body portion 112 and the holding portion 113, and the holding portion 113 presses the seal 120 against the main body portion 112. Specifically, the holding portion 113 is sleeved on the proximal end of the main body portion 112, and together with the main body portion 112, clamps the seal 120 therebetween.

[0105] Optionally, a convex portion 150 protrudes from the outer peripheral surface of the holding portion 113. The cover body 131 is sleeved on the holding portion 113, and a guide groove 140 is disposed on the cover body 131 such that the convex portion 150 is embedded in the guide groove 140. By configuring the body 110 to include the main body portion 112 and the holding portion 113, and connecting them by sleeving and clamping the seal 120, the connection between the body 110 and the seal 120 can be achieved, facilitating the assembly of the entire device.

[0106] Optionally, the guide groove 140 can be disposed on the holding portion 113. Correspondingly, the convex portion 150 protrudes from the inner wall of the cover body 131. The cover body 131 is sleeved on the holding portion 113 such that the convex portion 150 is embedded in the guide groove 140.

[0107] Wherein, the holding portion 113 is provided with an opening 1131. The opening 1131 and the channel 111 are respectively located on both sides of the seal 120 in the first direction X. An instrument or a catheter portion 132 can pass through the seal 120 via the opening 1131 and enter the channel 111.

[0108] As Figure 16 and Figure 17 shown, in some embodiments, the convex portion 150 moves to the second end 142 of the guide groove 140, causing the catheter portion 132 to move in the first direction X to disengage from the seal 120 and be spaced apart from the seal 120. The second end 142 is one of the proximal end and the distal end of the guide groove 140. As previously described, the second end 142 is the distal end of the guide groove 140 and will not be elaborated here. The cover body 131 is provided with a first limiting portion 1311, and the holding portion 113 is provided with a second limiting portion 1132; when the convex portion 150 is located at the second end 142, the first limiting portion 1311 contacts the second limiting portion 1132 to be able to limit the convex portion 150 within the guide groove 140. By providing the first limiting portion 1311 and the second limiting portion 1132 and their mutual cooperation for limiting, it can also prevent the convex portion 150 from disengaging from the guide groove 140, and at the same time prevent the cover body 131 of the end cover 130 from detaching from the holding portion 113 when rotating relative to the holding portion 113, ensuring the structural stability.

[0109] Among them, the first limiting portion 1311 can be a limiting block provided at the distal end of the cover body 131, or a limiting inclined surface formed by the inner wall of the cover body 131 narrowing towards the surface of the main body portion 112. The second limiting portion 1132 can be another limiting block provided on the holding portion 113, or directly the distal end surface of the holding portion 113.

[0110] When the cover body 131 rotates relative to the holding portion 113, causing the convex portion 150 to move along the guide groove 140 to the second end 142, the first limiting portion 1311 contacts and limits the second limiting portion 1132, so that the convex portion 150 is held in the guide groove 140, and the cover body 131 is sleeved on the holding portion 113.

[0111] In some embodiments, the guide groove 140 can be a closed structure at the second end 142. When the convex portion 150 moves along the guide groove 140 to the second end 142, the groove wall at the second end 142 can limit the convex portion 150, reducing the risk of the convex portion 150 disengaging from the guide groove 140. And at this time, the first limiting portion 1311 contacts the second limiting portion 1132 for further limiting, so as to play a dual limiting role, further reducing the convex portion 150 from disengaging from the guide groove 140 and improving the stability of the device.

[0112] In some embodiments, the guide groove 140 can be an open structure at the second end 142. When the convex portion 150 moves along the guide groove 140 to the second end 142, by the contact and limitation between the first limiting portion 1311 and the second limiting portion 1132, the convex portion 150 can be prevented from disengaging from the guide groove 140, and the stability of the device can also be improved.

[0113] As Figure 16 and Figure 17 shown, in some embodiments, the convex portion 150 moves to the first end 141 of the guide groove 140, causing the conduit portion 132 to move in the first direction X to squeeze the seal 120 and open the slit 121 to conduct the channel 111. The first end 141 is the other of the proximal end and the distal end of the guide groove 140. As previously described, the first end 141 is the proximal end of the guide groove 140, and will not be elaborated here. The inner wall of the cover body 131 is provided with a third limiting portion 1312, and the holding portion 113 is provided with a fourth limiting portion 1133; when the convex portion 150 is located at the first end 141, the third limiting portion 1312 contacts the fourth limiting portion 1133 to limit the convex portion 150 in the guide groove 140. By providing the third limiting portion 1312 and the fourth limiting portion 1133, and the two cooperate with each other for limiting, the convex portion 150 can be prevented from disengaging from the guide groove 140.

[0114] Wherein, the third limiting portion 1312 can be a limiting block provided on the inner wall of the cover body 131, or a flange formed on the inner wall of the cover body 131. The fourth limiting portion 1133 can be another limiting block provided on the holding portion 113, or another flange formed on the outer peripheral surface of the holding portion 113.

[0115] When the cover body 131 rotates relative to the holding portion 113, such that the convex portion 150 moves along the guide groove 140 to the first end 141, the third limiting portion 1312 contacts and limits the fourth limiting portion 1133, so that the convex portion 150 is held within the guide groove 140.

[0116] In some embodiments, the guide groove 140 can be a closed structure at the first end 141. When the convex portion 150 moves along the guide groove 140 to the first end 141, the groove wall at the first end 141 can limit the convex portion 150, reducing the risk of the convex portion 150 disengaging from the guide groove 140. And at this time, the third limiting portion 1312 contacts the fourth limiting portion 1133 for further limiting, thereby being able to play a role of double limiting, further reducing the convex portion 150 from disengaging from the guide groove 140 and enhancing the stability of the device.

[0117] In some embodiments, the guide groove 140 can be an open structure at the first end 141. When the convex portion 150 moves along the guide groove 140 to the first end 141, by the contact and limitation between the third limiting portion 1312 and the fourth limiting portion 1133, the convex portion 150 can be prevented from disengaging from the guide groove 140, and the stability of the device can also be enhanced.

[0118] In some embodiments, the cover body 131 is provided with a first limiting portion 1311 and a third limiting portion 1312. Correspondingly, the holding portion 113 is provided with a second limiting portion 1132 and a fourth limiting portion 1133. Wherein, the second limiting portion 1132 and the fourth limiting portion 1133 are located between the first limiting portion 1311 and the third limiting portion 1312. Along the first direction X, from the distal end to the proximal end, the first limiting portion 1311, the second limiting portion 1132, the fourth limiting portion 1133, and the third limiting portion 1312 are arranged in sequence.

[0119] Please refer to Figure 21 and Figure 22 , wherein Figure 22 is a cross-sectional view of the seal 120, and the slit 121 is not shown. In some embodiments, the thickness dimension at the central axis OO’ of the seal 120 is L 1 , and the thickness dimension at the edge of the seal 120 is L 2 , satisfying: L 1 < L 2That is to say, the seal 120 is thinner near the central axis OO', so the middle position of the seal 120 is weaker and more prone to deformation. During the operation, when the doctor operates on the valve body connector 100, the catheter portion 132 can be more easily inserted into the seal 120 and open the slit 121, reducing the operating resistance. And when the doctor directly inserts an instrument through the guide hole 1321 of the catheter portion 132 into the channel 111, due to the weaker position at the central axis OO' of the seal 120, the resistance will be smaller, and the instrument can more easily pass through the seal 120, thus improving the applicability to instruments made of softer materials.

[0120] Please refer to Figure 22 , in some embodiments, the seal 120 includes a first surface 122 and a second surface 123 facing away from each other in the first direction X. The catheter portion 132 sequentially penetrates the first surface 122 and the second surface 123 to open the slit 121. That is, the first surface 122 is located at the proximal end of the seal 120, and the second surface 123 is located at the distal end of the seal 120. The first surface 122 is recessed toward the second surface 123. That is to say, the first surface 122 is a concave surface. On the one hand, this can make the seal 120 thinner in the middle position and more easily pierced. On the other hand, when the catheter portion 132 or the instrument presses the seal 120, the concave surface area formed by the recess of the first surface 122 first contacts the catheter portion 132 or the instrument, and the extrusion force received is more concentrated, so that the deformation amount of the seal 120 is larger and it is more easily pierced.

[0121] In some embodiments, the first surface 122 can be an arc surface. That is, the first surface 122 is a curved surface shape, and its surface presents a curved arc. Specifically, the arc surface can be a circular arc, a spherical arc, an elliptical arc, a hyperbolic arc, etc.

[0122] In some embodiments, the first surface 122 is a combination of multiple types such as an arc surface, a plane perpendicular to the first direction X, a plane parallel to the first direction X, and an inclined plane inclined to the first direction X. For example Figure 22 in, the first surface 122 is a combination of an arc surface and a plane perpendicular to the first direction X; for example Figure 23 in, the first surface 122 is a combination of a plane perpendicular to the first direction X and an inclined plane inclined to the first direction X; for example Figure 24 in, the first surface 122 is a combination of a plane perpendicular to the first direction X and a plane parallel to the first direction X. Figure 22 , Figure 23 and Figure 24 The slit 121 is not shown in all of them.

[0123] Please refer to again Figure 21, in some embodiments, the seal 120 is provided with a plurality of slits 121, and the plurality of slits 121 are respectively formed on the first surface 122 and the second surface 123, and the extending directions of the plurality of slits 121 intersect. By providing the plurality of slits 121, the difficulty of the instrument or the catheter portion 132 passing through the seal 120 and opening the slits 121 can be further reduced. Specifically, the slits 121 provided on the first surface 122 and the slits 121 provided on the second surface 123 can be arranged in a manner of perpendicular intersection, so as to further reduce the resistance for the instrument to pass through.

[0124] Please also refer to Figure 25 , in some embodiments, the slits 121 formed on the first surface 122 are spaced apart from the slits 121 formed on the second surface 123. Thus, the slits 121 do not communicate with each other. Before the slits 121 are opened, the seal 120 is in a completely closed state, which can ensure the sealing performance.

[0125] Please refer to again Figures 1 to 3 , in some embodiments, the valve body connector 100 further includes a bypass tube 160. The bypass tube 160 is connected to the body 110 and communicates with the channel 111. Another instrument can pass through the channel 111 via the bypass tube 160, or liquid can be injected into the channel via the bypass tube 160.

[0126] Correspondingly, the present application also provides an endoscope assembly, as Figure 26 shown. The endoscope assembly includes an endoscope 200 and a valve body connector 100 according to any one of the above embodiments. The valve body connector 100 is connected to the endoscope 200, and the channel 111 communicates with the forceps channel 210 of the endoscope 200. Among them, the endoscope 200 can be an endoscope used in hepatobiliary surgery such as a choledochoscope. The distal end of the body 110 of the valve body connector 100 is connected to the forceps channel boss of the endoscope 200, and its channel 111 communicates with the forceps channel 210 of the endoscope 200. The first instrument 300 and the second instrument 400 are both instruments used in surgery. The first instrument 300 can pass through the seal 120, the channel 111, and the forceps channel 210 in sequence through the guide hole 1321 on the end cap 130 of the valve body connector 100 and enter the patient's body. The second instrument 400 can be connected to the bypass tube 160. The endoscope assembly can include all the technical features and beneficial effects of the above valve body connector 100, which will not be elaborated here.

[0127] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0128] The above has introduced in detail the valve body connector and the endoscope assembly provided by the embodiments of the present application, and specific examples have been used to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A valve body connector, characterized in that: include: A body (110) having a channel (111) extending along a first direction (X); a sealing member (120) connected to the body (110) and arranged in the channel (111); the sealing member (120) has a slit (121); the sealing member (120) is arranged to close the channel (111) when in a first state, and to open the slit (121) to allow passage through the channel (111) when in a second state; The end cover (130) comprises a cover body (131) and a conduit portion (132) connected to each other, wherein the cover body (131) is sleeved on the body (110); one of the cover body (131) and the body (110) is provided with a guide groove (140), and the other is provided with a convex portion (150); the guide groove (140) extends along a spiral track with a lead angle θ of 5° to 75°, and the convex portion (150) is arranged in the guide groove (140); The end cover (130) is configured such that when the cover body (131) rotates relative to the main body (110), the protrusion (150) moves along the guide groove (140), causing the cover body (131) to be displaced along the first direction (X) relative to the main body (110), and driving the conduit portion (132) to move along the first direction (X) relative to the seal (120), so as to enable the seal (120) to switch between the first state and the second state.

2. The valve body connector according to claim 1, characterized in that: One of the cover body (131) and the body (110) is provided with a plurality of guide grooves (140) at intervals along the circumferential direction, and the other is provided with a plurality of convex portions (150) at intervals along the circumferential direction, and each convex portion (150) is correspondingly arranged in one of the guide grooves (140); Each guide groove (140) extends along a spiral track, and the spiral tracks of the guide grooves (140) have the same lead angle θ and the same rotation direction, and the spiral tracks rotate around each other.

3. The valve body connector according to claim 1, characterized in that: The guide groove (140) has a first end (141) and a second end (142) opposite to each other; When the convex portion (150) is located at the first end (141), the conduit portion (132) opens the slit (121) to conduct the channel (111); when the convex portion (150) is located at the second end (142), the conduit portion (132) and the sealing element (120) are spaced apart from each other; The protrusion (150) moves from the first end (141) to the second end (142) and from the second end (142) to the first end (141), and the angle of rotation of the cover (131) relative to the main body (110) is less than or equal to 360°.

4. The valve body connector according to claim 1, characterized in that: The shape of the protrusion (150) is any one of a cylindrical shape, an elliptical cylindrical shape, and a prism shape.

5. The valve body connector according to claim 1, characterized in that: The convex portion (150) extends along a spiral trajectory, and the spiral trajectory of the convex portion (150) matches the spiral trajectory of the guide groove (140).

6. The valve body connector according to claim 5, characterized in that: The convex portion (150) comprises a plurality of convex sections (151) spaced apart from each other, and the plurality of convex sections (151) are arranged along the spiral track.

7. The valve body connector according to claim 1, characterized in that: The guide groove (140) comprises a first side wall (143) and a second side wall (144) which are arranged at intervals in the first direction (X); the first side wall (143) and the second side wall (144) are respectively arranged on two sides of the convex portion (150) which are opposite to each other in the first direction (X).

8. The valve body connector according to any one of claims 1 to 7, characterized in that: The convex portion (150) is protrudingly arranged on the outer peripheral surface of the main body (110), the guide groove (140) is arranged on the cover body (131), and the guide groove (140) penetrates the cover body (131) along the thickness direction of the cover body (131).

9. The valve body connector according to any one of claims 1 to 7, characterized in that: The convex portion (150) is protrudingly arranged on the outer peripheral surface of the main body (110), the guide groove (140) is arranged on the cover body (131), and the guide groove (140) is opened on a side of the cover body (131) facing the main body (110).

10. The valve body connector according to any one of claims 1 to 7, characterized in that: The body (110) comprises: A main body (112), wherein the channel (111) penetrates the main body (112) along the first direction (X); a retaining portion (113) disposed on one side of the main body (112) in the first direction (X) and sleeved on the main body (112); the retaining portion (113) presses the sealing element (120) onto the main body (112); The convex portion (150) is protrudingly arranged on the outer peripheral surface of the retaining portion (113), the cover body (131) is sleeved on the retaining portion (113), and the guide groove (140) is arranged on the cover body (131).

11. The valve body connector according to claim 10, characterized in that: The convex portion (150) moves to the second end (142) of the guide groove (140), so that the conduit portion (132) moves in the first direction (X) to separate from the sealing member (120) and to be spaced apart from the sealing member (120); The cover body (131) is provided with a first limiting portion (1311), and the retaining portion (113) is provided with a second limiting portion (1132); when the protrusion (150) is located at the second end (142), the first limiting portion (1311) contacts the second limiting portion (1132) to limit the protrusion (150) within the guide groove (140).

12. The valve body connector according to claim 10, characterized in that: The convex portion (150) moves to the first end (141) of the guide groove (140), so that the conduit portion (132) moves in the first direction (X) to squeeze the sealing member (120) and open the slit (121) to open the channel (111); The inner wall of the cover body (131) is provided with a third limiting portion (1312), and the retaining portion (113) is provided with a fourth limiting portion (1133); when the protrusion (150) is located at the first end (141), the third limiting portion (1312) contacts the fourth limiting portion (1133) to limit the protrusion (150) within the guide groove (140).

13. The valve body connector according to claim 1, characterized in that: The thickness dimension of the seal (120) at the center axis OO' is L1, and the thickness dimension of the seal (120) at the edge is L2, satisfying: L1 <L2。 14. The valve body connector according to claim 13, characterized in that: The sealing member (120) comprises a first surface (122) and a second surface (123) which are opposite to each other in the first direction (X); the conduit portion (132) sequentially penetrates the first surface (122) and the second surface (123) to open the slit (121); and the first surface (122) is recessed toward the second surface (123).

15. The valve body connector according to claim 14, characterized in that: The first surface (122) is a curved surface; or the first surface (122) is a combination of a curved surface, a plane perpendicular to the first direction (X), a plane parallel to the first direction (X), and an inclined surface inclined to the first direction (X).

16. The valve body connector according to claim 14, characterized in that: The sealing member (120) is provided with a plurality of slits (121), and the plurality of slits (121) are respectively opened on the first surface (122) and the second surface (123), and the extension directions of the plurality of slits (121) intersect.

17. The valve body connector according to claim 16, characterized in that: The slit (121) opened on the first surface (122) and the slit (121) opened on the second surface (123) are spaced apart from each other.

18. An endoscope assembly, characterized in that: include: an endoscope (200), and The valve body connector (100) according to any one of claims 1 to 17, wherein the valve body connector (100) is connected to the endoscope (200), and the channel (111) is connected to the clamp channel (210) of the endoscope (200).

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