Endoscope and endoscope assembly

Abstract

The present invention provides an endoscope and an endoscope assembly, which belongs to the technical field of endoscopes. The endoscope includes a handle and a suction valve, the suction valve is installed on the handle, the handle has an external interface, the external interface is connected to the suction valve, and the external interface is used to connect the suction channel of the functional device to connect the suction valve and the suction channel of the functional device. The present invention sets an external interface connected to the suction valve on the handle, and uses the external interface to enable the suction valve to be connected to the suction channel of other external functional devices, and controls the opening or closing of the suction channel of the functional device by controlling the suction valve on the handle, so that the operator can directly control whether the functional device sucks the target position while holding the handle with one hand, freeing the operator's other hand, simplifying the operation steps, and improving the convenience of operation. In addition, the functional device does not need to be provided with a suction valve, the structure of the functional device can be simplified, and the production cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of endoscopes, and in particular relates to an endoscope and an endoscope component. Background Art

[0002] An endoscope is a commonly used medical device that can enter the human body through natural orifices or through a small incision made during surgery to assist doctors in performing operations.

[0003] In the diagnosis and treatment of some diseases, endoscopes need to be used in conjunction with other functional devices. Specifically, liquid is perfused through the endoscope side, and the negative pressure suction valve of other functional devices is used to suck out the used liquid and its mixture. During the operation, the doctor usually needs to hold the endoscope with one hand and operate the negative pressure suction valve with the other hand, which is inconvenient to use and cumbersome to operate. Summary of the invention

[0004] The purpose of this application is to provide an endoscope and an endoscope assembly to solve the above-mentioned technical problems existing in the prior art.

[0005] This application is implemented as follows:

[0006] In the first aspect, an embodiment of the present application provides an endoscope, including a handle and a suction valve, wherein the suction valve is installed on the handle, and the handle has an external interface, which is connected to the suction valve. The external interface is used to connect the suction channel of the functional device to connect the suction valve and the suction channel of the functional device.

[0007] In a second aspect, an embodiment of the present application provides an endoscope assembly, comprising the endoscope provided by the embodiment of the first aspect, and also comprising a connecting tube, one end of which is detachably connected to an external interface, and the other end of which is used to communicate with a suction channel of a functional device.

[0008] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0009] In the present application, an external interface connected to the suction valve is provided on the handle, and the suction valve is connected to the suction channel of other external functional devices by using the external interface. The suction channel of the functional device is opened or closed by controlling the suction valve on the handle, so that the operator can directly control whether the functional device suctions the target position while holding the handle with one hand, freeing the operator's other hand, simplifying the operation steps, and improving the convenience of operation. In addition, the suction valve of the endoscope is directly used to control whether the functional device suctions the target position, and the functional device does not need to be provided with a suction valve, which can reduce the production cost of the functional device and improve production efficiency; in addition, since the number of valves on the functional device is reduced, the structure of the functional device can also be simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 is a schematic diagram of the overall structure of an endoscope provided in some embodiments of the present application;

[0012] Figure 2 is a schematic diagram of the internal structure of an endoscope provided in some embodiments of the present application;

[0013] Figure 3 is a schematic diagram of the coordination between the switching valve and the connecting pipe provided in some embodiments of the present application;

[0014] Figure 4 is a schematic diagram of the disassembly of a switching valve and a connecting pipe provided in some embodiments of the present application;

[0015] Figure 5 is a partial structural schematic diagram of a connecting pipe provided in some embodiments of the present application;

[0016] Figure 6 The switching structure provided in some embodiments of the present application is in a second state of the switching valve and the connecting pipe. Figure 1 ;

[0017] Figure 7 The switching structure provided in some embodiments of the present application is in a second state of the switching valve and the connecting pipe. Figure 2 ;

[0018] Figure 8 is a cross-sectional view of a switching valve and a connecting pipe in a first state of a switching structure provided in some embodiments of the present application Figure 1 ;

[0019] Fig. 9 is a cross-sectional view of a switching valve and a connecting pipe in a first state of a switching structure provided in some embodiments of the present application Figure 2 ;

[0020] Fig.10 This is a schematic diagram of the structure of the valve core provided in some embodiments of the present application. Figure 1 ;

[0021] Fig.11 is a cross-sectional view of a valve core provided in some embodiments of the present application;

[0022] Fig.12 This is a schematic diagram of the structure of the valve core provided in some embodiments of the present application. Figure 2;

[0023] Fig.13 It is a schematic diagram of the coordination structure of the endoscope assembly and the functional device provided in some embodiments of the present application;

[0024] Fig.14 This is a schematic diagram of the partial internal structure of the matching structure of the endoscope assembly and the functional device provided in some embodiments of the present application. Figure 1 ;

[0025] Fig.15 This application is about Fig.14 Detailed view of point A;

[0026] Fig.16 This is a schematic diagram of the partial internal structure of the matching structure of the endoscope assembly and the functional device provided in some embodiments of the present application. Figure 2 ;

[0027] Fig.17 This application is about Fig.16 Detail of point B;

[0028] Fig.18 It is a schematic diagram of the structure of a negative pressure suction sheath connected to an endoscope assembly provided in some embodiments of the present application.

[0029] In the figure: 100-endoscope, 110-handle, 111-external interface, 120-suction valve, 130-instrument channel, 140-insertion part, 150-suction channel, 200-negative pressure suction sheath, 210-suction channel, 211-negative pressure port, 220-sheath body, 230-sheath tube, 300-connecting tube, 310-second matching piece, 311-second threaded structure, 312-second limiting structure, 320-plug connector, 330 -tube body, 400-switching valve, 410-valve seat, 411-installing cavity, 412-first interface, 413-second interface, 414-third interface, 420-rotating body, 421-inner cavity, 422-first opening, 423-second opening, 424-third opening, 430-valve core, 431-avoidance through hole, 432-avoidance groove, 440-first matching piece, 441-first threaded structure, 442-first limiting structure. DETAILED DESCRIPTION

[0030] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0031] It should be noted that, in each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its accessories relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0032] The present application embodiment provides an endoscope 100, referring to Figure 1 As shown, the endoscope 100 provided in the embodiment of the present application includes a handle 110 and a suction valve 120. The suction valve 120 is installed on the handle 110, and the handle 110 has an external interface 111, and the external interface 111 is connected to the suction valve 120. The external interface 111 is used to connect the suction channel 210 of the functional device to connect the suction valve 120 and the suction channel 210 of the functional device.

[0033] It can be understood that the suction valve 120 is one of the components of the endoscope 100, which is connected to a negative pressure device to suction the target position. When the operator operates the endoscope 100, he usually controls the endoscope 100 by holding the handle 110 with one hand. The suction valve 120 is installed on the handle 110, and the operator can control the suction valve 120 while holding the endoscope 100 with one hand, and open or close the suction valve 120.

[0034] The handle 110 is provided with an external interface 111, which is an opening provided on the housing of the handle 110. The external interface 111 can be communicated with the suction channel 210 of the functional device, so that the suction valve 120 is communicated with the suction channel 210 of the functional device. In this way, the suction channel 210 of the functional device can be opened or closed directly by controlling the suction valve 120. When an external functional device needs to be used in conjunction with the endoscope 100, the operator can directly control the suction valve 120 on the handle 110 to control whether the functional device performs suction on the target position. The operator can complete the operation by holding the handle 110 with one hand, without the need for two-handed operation, which simplifies the operation steps of the functional device and improves the convenience of operation.

[0035] Since the embodiment of the present application uses the suction valve 120 of the endoscope 100 to replace the suction valve 120 of the functional device, it is not necessary to set the suction valve 120 on the functional device, and the number of valves on the functional device can be reduced. Since there is no need to set the suction valve 120, the structure of the functional device can be simplified, the production cost of the functional device is correspondingly reduced, and the production efficiency is correspondingly improved.

[0036] It is understood that during the operation, the endoscope 100 will be used in conjunction with other devices, and the other devices having the suction channel 210 are the functional devices described in the embodiment of the present application. One end of the functional device is used to connect to the external interface 111, and the other end is placed at the target location to suction the target location.

[0037] In some specific embodiments, the functional device may be a negative pressure suction sheath 200. The negative pressure suction sheath 200 is generally used in conjunction with the endoscope 100 in the treatment of urinary stone diseases. The insertion portion 140 of the endoscope 100 is inserted into the sheath tube 230 of the ureteral sheath, and the distal ends of the sheath tube 230 and the insertion portion 140 are both inserted into the target position of the human body cavity. In the process of crushing stones, the endoscope 100 side needs to be perfused with liquid, and the negative pressure suction sheath 200 side needs to be sucked out by suction to extract the mixture of the internal stone and the perfusion liquid on the endoscope 100 side. The suction channel 210 of the negative pressure suction sheath 200 is connected to the suction valve 120 of the endoscope 100, and the suction valve 120 of the endoscope 100 is directly used to control the suction function of the negative pressure suction sheath 200, thereby simplifying the operation steps of the negative pressure suction sheath 200 and the endoscope 100, and improving the convenience of operation.

[0038] In the prior art, the suction valve 120 on the endoscope 100 side is not used during the stone treatment process. In the present application, the suction valve 120 is connected to the suction channel 210 of the functional device, and the suction valve 120 is fully utilized. At the same time, the overall operation process of the endoscope 100 and the functional device is simplified.

[0039] The communication between the external interface 111 and the suction valve 120 may be through a pipeline, or the interface of the suction valve 120 may be directly provided at the external interface 111. The communication between the external interface 111 and the suction channel 210 of the functional device may be achieved through an external pipeline, or the interface of the suction channel 210 of the functional device may be directly connected to the external interface 111.

[0040] In some preferred embodiments, reference Figure 1 to Figure 2 , Figures 14 to 17 As shown, the endoscope 100 also includes a switching valve 400. The switching valve 400 is installed on the handle 110, and the switching valve 400 has a first interface 412, a second interface 413 and a third interface 414. The first interface 412 is connected to the external interface 111, the second interface 413 is connected to the suction valve 120, and the third interface 414 is used to connect to the working channel of the endoscope 100 or the working channel of a functional device. The switching valve 400 is a valve connected between the working channel, the suction valve 120 and the first interface 412, and the three can be selectively connected by controlling the state of the switching valve 400. In some embodiments of the present application, according to actual needs, the operator can control the switching valve 400 to selectively connect the suction valve 120 with the first interface 412, or connect the suction valve 120 with the working channel.

[0041] In the case where the suction channel 210 of the functional device needs to be used, the switching valve 400 is connected to the suction valve 120 and the first interface 412, the suction channel 210 of the functional device is connected to the external interface 111, and the suction valve 120 is used to control the functional device to suction the target position. In the case where the suction channel 210 of the functional device is not needed, the switching valve 400 can be controlled to switch the switching valve 400 to a state where the suction valve 120 and the working channel are connected. The working channel is a channel inside the endoscope 100, and can also be a channel inside the functional device. The suction valve 120 is connected to the working channel, and the connection between the suction channel 210 of the functional device and the endoscope 100 can be released, and the working channel can be used alone. In the case where the suction valve 120 is connected to the working channel of the endoscope 100, the endoscope 100 is used alone at this time to avoid the presence of the functional device affecting the movement and operation of the endoscope 100.

[0042] It can be understood that the connection between the first interface 412 and the external interface 111 means that the first interface 412 and the external interface 111 are connected to each other, the external interface 111 is sleeved outside the first interface 412, or the opening of the first interface 412 is aligned and connected to the external interface 111, and the first interface 412 can protrude from the handle 110 relative to the external interface 111. Figure 1 As shown; the outer edge of the first interface 412 may also be located inside the external interface 111.

[0043] The working channel of the functional device refers to a channel in the functional device, except for the suction channel 210, which is used to transport materials required for work such as instruments and media during work.

[0044] In some embodiments, the endoscope 100 further includes an instrument channel 130, and the third interface 414 is connected to the instrument channel 130. That is, the working channel is the instrument channel 130 of the endoscope 100. Various instruments can enter the human body cavity through the instrument channel 130 to perform corresponding operations on the target position. The various instruments can be sampling forceps, stone removal devices, etc. Liquid can also be introduced into the target position through the instrument channel 130, or the target position can be suctioned. When suctioning, the suction valve 120 needs to be opened.

[0045] The endoscope 100 provided in the embodiment of the present application, even if the external interface 111 and the switching valve 400 are provided, will not affect the independent use of the endoscope 100. By providing the switching valve 400, the operator can control the switching valve 400 according to the actual situation, thereby improving the convenience and flexibility of the use of the endoscope 100.

[0046] In some embodiments of the present application, the switching valve 400 can directly select a three-way valve, and the three-way valve is used to control the connection between the suction valve 120 and the external interface 111 or the suction valve 120 and the working channel. In other embodiments, the switching valve 400 can be a four-way valve, a five-way valve, etc., and the redundant interfaces of the switching valve 400 can be connected to other devices to achieve diversified operations of the endoscope 100.

[0047] The position of the handle 110 of the endoscope 100 is limited. To facilitate the operator to operate the suction valve 120 while holding the endoscope 100, the suction valve 120 is generally arranged at the proximal end of the handle 110. A suction channel 150 is generally connected between the suction valve 120 and the switching valve 400 to accommodate the position of the suction valve 120.

[0048] In some embodiments of the present application, the switching valve 400 can be connected to the functional device through the connecting tube 300. When the functional device is in use, there is generally a distance between the endoscope 100, and the suction channel 210 of the functional device cannot be directly connected to the external interface 111. Usually, a connecting tube 300 is used to adapt the position of the endoscope 100 and the functional device, and the connecting tube 300 is connected between the external interface 111 and the functional device. Since the switching valve 400 is also provided in the handle 110, the connection between the connecting tube 300 and the external interface 111 is actually also the connection between the connecting tube 300 and the first interface 412. The connecting tube 300 is usually a hose.

[0049] The switching valve 400 is provided with a switching structure, which can cooperate with the connecting pipe 300 to switch between the first state and the second state under the drive of the connecting pipe 300. Figure 8 and Fig. 9 As shown, when the switching structure is connected to the connecting pipe 300, the switching structure is in the first state. The second interface 413 is isolated from the third interface 414, and the first interface 412 is connected to the second interface 413. At this time, the suction valve 120 is connected to the external interface 111. Figure 6 and Figure 7 As shown, when the switching structure is separated from the connecting pipe 300, the switching structure is in the second state. The second interface 413 is isolated from the first interface 412, and the second interface 413 is connected to the third interface 414. The suction valve 120 is connected to the working channel.

[0050] When the switching structure is in different states, the opening and closing conditions of the channels inside it are different. The embodiment of the present application controls the switching of the switching structure state by setting the connection between the connecting tube 300 and the switching structure, so that when the connecting tube 300 is plugged in, the switching structure automatically switches to the first state, and the suction valve 120 is connected to the functional device. When the connecting tube 300 is removed, the switching structure automatically switches to the second state, and the suction valve 120 is connected to the working channel. The operator does not need to control the switching valve 400 additionally when controlling the connecting tube 300 to adjust the state of the switching structure, which can further improve the convenience of operation.

[0051] In specific use, when the suction channel 210 of the functional device needs to be used, the connection tube 300 is connected to the switching structure to realize the connection between the suction valve 120 and the suction channel 210 of the functional device; when the suction channel 210 of the functional device is not needed, the connection tube 300 is directly removed from the switching structure, and the two are separated to realize the connection between the suction valve 120 and the working channel of the endoscope 100. When the connection tube 300 is connected and separated from the switching structure, the switching structure is in different states, that is, in the process of changing the relative position of the connection tube 300 and the switching structure, the switching structure can be realized between the first state and the second state. In the process of connecting the connection tube 300 from the outside of the switching structure to the switching structure, the switching structure switches from the second state to the first state. In the process of removing the connection tube 300 from the switching structure, the switching structure switches from the first state to the second state.

[0052] By controlling the state of the switching structure through the cooperation of the connecting tube 300 and the switching structure, the situation of errors in the use of the endoscope 100 can be avoided or reduced. For example, when the functional device needs to be used, although the connecting tube 300 is connected to the external interface 111, the state of the switching valve 400 is forgotten to be adjusted. At this time, the switching valve 400 connects the suction valve 120 with the working channel. If the suction valve 120 is started at this time, the suction valve 120 will aspirate the working channel, and the suction channel 210 of the functional device will not be able to aspirate, affecting the surgical process. For example, when the endoscope 100 needs to be used alone, although the connecting tube 300 has been removed, the state of the switching valve 400 is forgotten to be adjusted. At this time, the switching valve 400 connects the suction valve 120 with the external interface 111. If the suction valve 120 is started at this time, the suction valve 120 will not be able to aspirate the working channel.

[0053] The switching structure can switch its state by moving or by rotating. Figure 4 , Figure 6 and Figure 8 As shown, the switching structure includes a valve seat 410 and a rotating body 420. Figure 4As shown, the valve seat 410 has a mounting cavity 411, and the first interface 412, the second interface 413 and the third interface 414 of the switching valve 400 are all arranged on the valve seat 410 and communicated with the mounting cavity 411. The three interfaces are communicated through the mounting cavity 411. The rotating body 420 is rotatably arranged inside the mounting cavity 411, and the second interface 413 is selectively controlled to communicate with the first interface 412 or the third interface 414 by controlling the position of the rotating body 420.

[0054] The valve seat 410 is fixedly arranged between the external interface 111, the suction valve 120 and the working channel, and the position of the valve seat 410 is fixedly arranged relative to the handle 110. The rotating body 420 is movable in the installation cavity 411, and the rotating body 420 can rotate between the first position and the second position under the drive of the connecting tube 300, thereby realizing the switching of the switching structure state. Figure 8 and Fig. 9 As shown in FIG. 1 , when the rotating body 420 is in the first position, the switching structure is in the first state. At this time, the suction valve 120 is connected to the connecting pipe 300. Figure 6 and Figure 7 As shown, when the rotating body 420 is in the second position, the switching structure is in the second state. At this time, the suction valve 120 is connected to the working channel.

[0055] The switching of the switching structure state is achieved directly by controlling the rotation of the rotating body 420, and the overall operation is more convenient and flexible. In addition, the position of the rotating body 420 can be switched by setting the rotating body 420 to rotate, and the position of the rotating body 420 will not change relative to the handle 110. In some other embodiments, the rotating body 420 can be movably arranged with the valve seat 410, and the rotating body 420 can be driven to move along its axial direction by plugging the connecting pipe 300, and the switching of the switching structure state is achieved by the movement of the rotating body 420.

[0056] In some embodiments of the present application, reference Figure 4 As shown, the rotating body 420 has an inner cavity 421 and a first opening 422, a second opening 423 and a third opening 424 that are in communication with the inner cavity 421. The first opening 422 is in communication with the first interface 412, and a valve core 430 is installed in the rotating body 420, and the valve core 430 blocks the first opening 422 from the second opening 423 and the third opening 424. The second opening 423 and the third opening 424 can be in communication with each other through the inner cavity 421, but due to the existence of the valve core 430, the first opening 422 is located on the other side of the valve core 430 relative to the second opening 423 and the third opening 424, and the first opening 422 cannot be in communication with the second opening 423 and the third opening 424. The first opening 422 is an insertion port of the switching valve 400, and the connecting pipe 300 is inserted into the switching valve 400 through the first opening 422.

[0057] refer to Figure 6 and Figure 7 As shown, the rotating body 420 is in the second position. The connecting pipe 300 is separated from the switching valve 400, the second opening 423 is correspondingly connected to the second interface 413, the third opening 424 is correspondingly connected to the third interface 414, the second interface 413 and the third interface 414 are connected through the inner cavity 421 of the rotating body 420, and the switching structure is in the second state, and the suction valve 120 is connected to the working channel.

[0058] refer to Figure 8 and Fig. 9 As shown, the rotating body 420 is in the first position. The connecting pipe 300 is connected to the switching valve 400, and the connecting pipe 300 passes through the valve core 430 and communicates with the second opening 423 and the third opening 424 located on the other side of the valve core 430. Correspondingly, the position of the rotating body 420 rotates at this time, and the positions of the second opening 423 and the third opening 424 change. The third opening 424 communicates with the second interface 413, and the suction valve 120 is connected with the connecting pipe 300, while the second opening 423 is blocked by the inner wall of the installation cavity 411. At the same time, the inner wall of the rotating body 420 blocks the third interface 414 of the valve seat 410, preventing the second opening 423 and the third interface 414 from being connected through the gap between the outer wall of the rotating body 420 and the inner wall of the installation cavity 411.

[0059] In some embodiments of the present application, reference Figure 4 As shown, the switching valve 400 further includes a first fitting 440 disposed in the switching structure, and the first fitting 440 can cooperate with the second fitting 310 of the connecting pipe 300 to drive the rotating body 420 to rotate. The driving of the switching structure by the connecting pipe 300 is achieved through the interaction between the first fitting 440 and the second fitting 310. In the process of inserting the connecting pipe 300 into the rotating body 420, the first fitting 440 and the second fitting 310 cooperate with each other to convert the linear motion of the connecting pipe 300 into the rotational motion of the rotating body 420, thereby driving the rotating body 420 to rotate.

[0060] In some embodiments, the first fitting member 440 may be a spiral groove disposed on the surface of the rotating body 420, and the second fitting member 310 may be a slider disposed on the surface of the connecting tube 300. When the connecting tube 300 is inserted into the rotating body 420, the slider is engaged with the spiral groove. As the connecting tube 300 continues to be inserted, the slider slides in the spiral groove, and the rotating body 420 rotates relative to the connecting tube 300, and the rotating body 420 rotates from the second position to the first position. When the connecting tube 300 is removed from the rotating body 420, the slider slides in the spiral groove, so that the rotating body 420 rotates relative to the connecting tube 300, and the rotating body 420 rotates from the first position to the second position. Under this structure, relative rotation occurs between the rotating body 420 and the connecting tube 300, and the friction between the connecting tube 300 and the valve core 430 is relatively large when the connecting tube 300 penetrates the valve core 430 or separates from the valve core 430.

[0061] In other embodiments, a limiting structure may be provided between the connecting tube 300 and the rotating body 420 so that the connecting tube 300 and the rotating body 420 can rotate synchronously. The operator can directly control the rotation of the rotating body 420 by controlling the rotation of the connecting tube 300, which makes the operation more convenient and the rotating body 420 easier to rotate. At the same time, the friction between the connecting tube 300 and the valve core 430 can also be reduced accordingly. Figure 4 As shown, the first matching member 440 includes a first limiting structure 442 disposed on the rotating body 420. Figure 5 As shown, the second matching member 310 includes a second limiting structure 312 disposed on the connecting pipe 300. The first limiting structure 442 can be limitedly matched with the second limiting structure 312 in the circumferential direction of the rotating body 420, so that the connecting pipe 300 can rotate synchronously with the rotating body 420 relative to the valve seat 410. At the same time, it should be noted that the second limiting structure 312 needs to be reserved for the axial movement of the rotating body 420, so that the connecting pipe 300 can smoothly pass through the valve core 430.

[0062] Further preferably, reference Figure 4 As shown, the first fitting 440 further includes a first threaded structure 441 disposed on the inner wall or outer wall of the valve seat 410; Figure 5As shown, the second fitting member 310 further includes a second threaded structure 311 disposed on the connecting pipe 300. The first threaded structure 441 and the second threaded structure 311 are threadedly matched, and the two are threadedly connected, thereby fixing the connecting pipe 300 to the valve seat 410. After the connecting pipe 300 is inserted into a suitable position in the rotating body 420, even if the operator releases the control of the connecting pipe 300, due to the threaded connection between the first threaded structure 441 and the second threaded structure 311, the position of the connecting pipe 300 can remain stable relative to the valve seat 410, and the position of the rotating body 420 that is limitedly matched with the connecting pipe 300 can also remain stable, so that the communication state between the suction valve 120 and the connecting pipe 300 remains stable.

[0063] In some embodiments of the present application, one of the first limiting structure 442 and the second limiting structure 312 is a block structure, and the other is a groove structure. The block structure is inserted into the groove, so that the rotating body 420 and the connecting pipe 300 are matched in the circumferential limit position. Along the insertion direction of the connecting pipe 300, the groove has a certain depth. Preferably, when the rotating body 420 rotates to the first position, the block just contacts and cooperates with the bottom of the groove, and the connecting pipe 300 can no longer be inserted into the rotating body 420. The change in the operating feel of the connecting pipe 300 can remind the operator that the connecting pipe 300 has been inserted into place and can be used with confidence.

[0064] The connecting tube 300 and the valve seat 410 are threadedly connected, and the lengths of the first thread structure 441 and the second thread structure 311 need to correspond to the insertion stroke of the connecting tube 300. In some preferred embodiments, when the connecting tube 300 is rotated to the first position, the second thread structure 311 should be rotated to the end of the first thread structure 441, and the second thread structure 311 cannot continue to rotate relative to the first thread structure 441, and the operator's operating feel of the connecting tube 300 changes, which can remind the operator that the connecting tube 300 has been inserted in place.

[0065] In some preferred embodiments, reference Figure 3 and Figure 5As shown, the connecting pipe 300 includes a pipe body 330 and a plug connector 320, the plug connector 320 is sleeved outside the pipe body 330, and a plug-in gap is provided between the inner wall of the plug connector 320 and the outer wall of the pipe body 330, and the pipe body 330 is used to insert the rotating body 420 through the valve core 430, and when the pipe body 330 is inserted into the rotating body 420, the valve seat 410 is inserted into the plug-in gap of the connecting pipe 300. The second thread structure 311 is provided on the inner wall of the plug connector 320, and the first thread structure 441 is provided on the outer wall of the valve seat 410, and the plug connector 320 can be sleeved outside the valve seat 410 and threadedly connected with the valve seat 410. The plug connector 320 is sleeved outside the valve seat 410, which can improve the sealing performance of the connection position between the connecting pipe 300 and the switching valve 400, and avoid the situation where the inner cavity 421 of the rotating body 420 is connected to the external environment. In addition, the diameter of the plug connector 320 can be set relatively large, which is more convenient for the operator to control the rotation of the plug connector 320.

[0066] When the rotating body 420 rotates, the rotation angle between the first position and the second position is fixed, and the rotation angle of the rotating body 420 is defined as the first rotation angle, which is also the rotation angle of the connecting tube 300. The angle between the axis of the second opening 423 on the rotating body 420 and the axis of the third opening 424 is the first angle, and the reference angle is Figure 7 and Fig. 9 As shown, the first angle is represented by a. The first rotation angle is a or a plus at least 360 degrees. The first rotation angle can also be a combination angle, or a combination angle plus at least 360 degrees. In some specific embodiments of the present application, a is equal to 90 degrees, the first rotation angle is 90 degrees or 450 degrees, 810 degrees, etc., and the first rotation angle can also be 270 degrees or 630 degrees, 990 degrees, etc.

[0067] The valve core 430 is installed in the inner cavity 421 of the rotating body 420, isolating the first opening 422 from the second opening 423 and the third opening 424. The valve core 430 is generally an elastic structural member. After the connecting pipe 300 passes through the valve core 430, the valve core 430 can be tightly wrapped around the connecting pipe 300 to avoid air leakage. Figures 10 to 12 As shown, the valve core 430 is provided with an avoidance through hole 431 and a plurality of avoidance grooves 432. The connecting pipe 300 can be inserted into the avoidance through hole 431 to pass through the valve core 430. In the process of the connecting pipe 300 passing through the valve core 430, the connecting pipe 300 presses against the valve core 430, so that the valve core 430 is deformed. The avoidance groove 432 is arranged at a circumferential position of the avoidance through hole 431 to reduce the structural strength of the valve core 430 at the circumferential position of the avoidance through hole 431, so that the valve core 430 is more easily deformed under the pressing effect of the connecting pipe 300, the connecting pipe 300 is more easily passed through the valve core 430, and the operator is more likely to install the connecting pipe 300 to the handle 110.

[0068] The avoidance groove 432 can be set as an annular structure, which is coaxially arranged with the avoidance through hole 431. Fig.12 As shown. A plurality of avoidance grooves 432 may be provided. When the avoidance groove 432 is in an annular structure, the plurality of avoidance grooves 432 are sequentially arranged along the axial direction of the valve core 430. Fig.10 and Fig.11 In other embodiments, the avoidance groove 432 may be opened along the axial direction of the valve core 430 , and a plurality of avoidance grooves 432 may be evenly distributed around the avoidance through hole 431 .

[0069] The present application also provides an endoscope assembly, referring to Figures 13 to 17 The endoscope 100 provided in any of the above embodiments also includes a connecting tube 300. One end of the connecting tube 300 is detachably connected to the external interface 111, and the other end is used to communicate with the suction channel 210 of the functional device.

[0070] In some embodiments, the functional device may be a ureteral sheath, the structure of which is shown in FIG. Fig.18 As shown, it includes a sheath body 220 and a sheath tube 230. The inner space formed by the sheath tube 230 is a part of the suction channel 210. A negative pressure port 211 is provided on the sheath body 220. The negative pressure port 211 is connected to the suction channel 210. The connecting tube 300 is generally directly connected to the position of the negative pressure port 211.

[0071] In use, the insertion portion 140 of the endoscope 100 is inserted into the sheath tube 230 of the ureteral sheath, and the space inside the insertion portion 140 is a part of the instrument channel 130. Liquid is introduced into the target position through the instrument channel 130, and the suction valve 120 is connected to the suction channel 210 of the ureteral sheath, and the material at the target position is sucked out through the gap between the sheath tube 230 and the insertion portion 140.

[0072] The endoscope 100 provided in the embodiment of the present application may be a nephroscope, or a suction endoscope, a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An endoscope, characterized in that: Comprising a handle (110) and a suction valve (120), wherein the suction valve (120) is mounted on the handle (110), and the handle (110) has an external interface (111), wherein the external interface (111) is in communication with the suction valve (120), and wherein the external interface (111) is used to connect to a suction channel (210) of a functional device, so as to connect the suction valve (120) and the suction channel (210) of the functional device; The endoscope (100) further comprises a switching valve (400), the switching valve (400) being mounted on the handle (110), the switching valve (400) having a first interface (412), a second interface (413) and a third interface (414), the first interface (412) being connected to the external interface (111), the second interface (413) being connected to the suction valve (120), and the third interface (414) being used to be connected to a working channel of the endoscope (100) or the functional device, the switching valve (400) being capable of connecting the suction valve (120) to the first interface (412) or connecting the suction valve (120) to the working channel; The switching valve (400) can be connected to the suction channel (210) of the functional device via a connecting pipe (300); The switching valve (400) has a switching structure, and the switching structure can cooperate with the connecting pipe (300) to switch between a first state and a second state under the drive of the connecting pipe (300); When the switching structure is connected to the connecting pipe (300), the switching structure is in a first state, and the first interface (412) is in communication with the second interface (413); When the switching structure is separated from the connecting pipe (300), the switching structure is in a second state, and the second interface (413) is in communication with the third interface (414).

2. An endoscope according to claim 1, characterized in that: The endoscope (100) further comprises an instrument channel (130), and the third interface (414) is in communication with the instrument channel (130).

3. An endoscope according to claim 1, characterized in that: The switching structure comprises a valve seat (410) and a rotating body (420); the valve seat (410) has a mounting cavity (411); the first interface (412), the second interface (413) and the third interface (414) are all arranged on the valve seat (410) and communicate with the mounting cavity (411); the rotating body (420) is rotatably arranged in the mounting cavity (411); The rotating body (420) can rotate between a first position and a second position under the drive of the connecting pipe (300); when the rotating body (420) is in the first position, the switching structure is in a first state; and when the rotating body (420) is in the second position, the switching structure is in a second state.

4. An endoscope according to claim 3, characterized in that: The rotating body (420) has an inner cavity (421) and a first opening (422), a second opening (423) and a third opening (424) which are in communication with the inner cavity (421); the first opening (422) is in communication with the first interface (412); a valve core (430) is installed in the rotating body (420); the valve core (430) blocks the first opening (422) from the second opening (423) and the third opening (424); When the rotating body (420) is in the second position, the second opening (423) is in corresponding communication with the second interface (413), and the third opening (424) is in corresponding communication with the third interface (414); When the rotating body (420) is in the first position, the connecting pipe (300) passes through the valve core (430), the third opening (424) is correspondingly connected to the second interface (413), the inner wall of the installation cavity (411) blocks the second opening (423), and the outer wall of the rotating body (420) blocks the third interface (414).

5. An endoscope according to claim 4, characterized in that: The switching valve (400) further comprises a first matching piece (440) arranged on the switching structure, wherein the first matching piece (440) can match with the second matching piece (310) of the connecting pipe (300) to drive the rotating body (420) to rotate.

6. An endoscope according to claim 5, characterized in that: The first matching component (440) comprises a first threaded structure (441) provided on the inner wall or the outer wall of the valve seat (410) and a first position-limiting structure (442) provided on the rotating body (420); the second matching component (310) comprises a second threaded structure (311) and a second position-limiting structure (312) provided on the connecting pipe (300); The first limiting structure (442) can be limitedly matched with the second limiting structure (312) in the circumferential direction of the rotating body (420), and the first threaded structure (441) can be threadedly matched with the second threaded structure (311) to drive the rotating body (420) and the connecting pipe (300) to rotate synchronously relative to the valve seat (410).

7. An endoscope according to claim 4, characterized in that: The valve core (430) is an elastic structural component, the valve core (430) has an avoidance through hole (431) and an avoidance groove (432), the connecting pipe (300) can be inserted into the avoidance through hole (431) to pass through the valve core (430), and the avoidance groove (432) is arranged at a circumferential position of the avoidance through hole (431).

8. An endoscope assembly, characterized in that: The endoscope (100) comprises the endoscope (100) according to any one of claims 1 to 7, and further comprises a connecting tube (300), one end of the connecting tube (300) being detachably connected to the external interface (111), and the other end of the connecting tube (300) being used for communicating with a suction channel (210) of a functional device.

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