Endoscope and endoscopic examination equipment

Abstract

The utility model provides an endoscope and an endoscopic examination device. The endoscope comprises a handle with an accommodating cavity; the insertion part is provided with a first end penetrating through the handle and a second end far away from the handle; the core pipe is rotatably arranged in the containing cavity, and the core pipe is arranged at the first end of the insertion part in a sleeving mode and fixed to the insertion part in the circumferential direction; wherein the insertion part is provided with an instrument channel; the core tube is provided with a first end sleeving the insertion part and a second end far away from the insertion part, the second end of the core tube is provided with a sealing assembly, and the sealing assembly comprises a duckbill valve and a rear sealing ring; the duckbill valve is constructed to be capable of being opened and closed, when the duckbill valve is opened, the duckbill valve allows the surgical instrument to penetrate into the instrument channel, and when the duckbill valve is closed, the duckbill valve seals the second end of the core tube; the rear sealing ring is configured to be capable of sealing a gap between the surgical instrument and the core tube when the surgical instrument penetrates into the instrument channel. According to the technical scheme, the problem that a sealing assembly of an existing endoscope can only seal an instrument channel when a surgical instrument is not arranged in a penetrating mode can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an endoscope and endoscopic inspection equipment. Background Art

[0002] Endoscope is an essential instrument for minimally invasive surgery. It can not only reduce the size of the surgical wound, allowing doctors to have a more comprehensive surgical field of view and reduce patients' hospitalization time, but also reduce patients' pain and discomfort during surgery. Therefore, it is favored by clinical physicians and patients in major hospitals.

[0003] In order to expand the field of view, some manufacturers have begun to develop angle-adjustable endoscopes. However, existing endoscopes have simple structures and many shortcomings. For example, the instrument channel of an endoscope is usually equipped with a sealing component to achieve sealing of the instrument channel. However, the existing sealing structure can usually only seal the instrument channel when no surgical instrument is inserted, and the use effect is not ideal. Utility Model Content

[0004] The embodiments of the present application at least provide an endoscope and an endoscopic inspection device to improve the problem that the sealing component of the existing endoscope can only seal the instrument channel when no surgical instrument is inserted.

[0005] In a first aspect, an embodiment of the present application provides an endoscope, comprising: a handle having a accommodating cavity; an insertion portion having a first end inserted into the handle and a second end away from the handle; a core tube rotatably arranged in the accommodating cavity, the core tube being sleeved on the first end of the insertion portion and circumferentially fixed to the insertion portion; wherein the insertion portion has an instrument channel; the core tube having a first end sleeved on the insertion portion and a second end away from the insertion portion, the second end of the core tube being provided with a sealing assembly, the sealing assembly comprising a duckbill valve and a rear sealing ring; the duckbill valve is located in the second end of the core tube, the duckbill valve is constructed to be able to open and close, when opened, the duckbill valve allows the surgical instrument to penetrate the instrument channel, and when closed, the duckbill valve closes the second end of the core tube; the rear sealing ring is located in the second end of the core tube, the rear sealing ring is constructed to be able to seal the gap between the surgical instrument and the core tube when the surgical instrument penetrates the instrument channel.

[0006] In an optional embodiment, the duckbill valve is located on a side of the rear sealing ring facing the insertion portion.

[0007] In an optional embodiment, the sealing assembly further comprises a sealing sleeve, wherein the sealing sleeve is connected to the second end of the core tube, and the duckbill valve and the rear sealing ring are both sleeved in the sealing sleeve.

[0008] In an optional embodiment, the sealing sleeve is connected to the second end of the core tube by means of a snap-fit.

[0009] In an optional embodiment, the duckbill valve has a flange on a side facing the insertion portion;

[0010] The seal sleeve is adapted to compress the flange when assembled on the second end of the core tube.

[0011] In an optional embodiment, the sealing assembly further comprises a second end cover, wherein the second end cover is connected to the sealing sleeve, and the second end cover is suitable for compressing the rear sealing ring when assembled on the sealing sleeve.

[0012] In an optional embodiment, the second end cover is connected to the sealing sleeve by means of a snap-fit.

[0013] In an optional embodiment, the endoscope further comprises a sleeve, wherein the sleeve is sleeved on the core tube and rotatably cooperates with the core tube, and the sleeve is connected and fixed to the handle.

[0014] In an optional embodiment, the insertion portion includes an outer tube and an inner tube;

[0015] The core tube is provided with a first interface and a second interface, a first lumen and a second lumen are formed between the core tube and the insertion portion, the first interface and the outer tube are connected through the first lumen, and the second interface and the inner tube are connected through the second lumen;

[0016] The sleeve is provided with a first joint and a second joint, a first annular channel and a second annular channel are formed between the sleeve and the core tube, the first joint and the first interface are connected through the first annular channel, and the second joint and the second interface are connected through the second annular channel.

[0017] In an optional embodiment, an outer tube sealing ring is provided between the core tube and the outer tube.

[0018] In an optional embodiment, an inner tube sealing ring is provided between the core tube and the inner tube.

[0019] In an optional embodiment, a first annular channel sealing ring and a second annular channel sealing ring are provided between the core tube and the tube sleeve; wherein,

[0020] The first annular channel sealing ring is located on both sides of the first annular channel;

[0021] The second annular channel sealing ring is located on both sides of the second annular channel.

[0022] In an optional embodiment, the second lumen is provided with a stent, and the stent is configured to guide the surgical instrument.

[0023] In an optional embodiment, the handle is provided with a water inlet joint and a water outlet joint, a water inlet pipe is connected between the water inlet joint and the first joint, and a water outlet pipe is connected between the water outlet joint and the second joint.

[0024] In an optional implementation, the water inlet joint is provided with a water inlet valve, and the water outlet joint is provided with a water outlet valve.

[0025] In an optional embodiment, the endoscope further includes a control circuit board, which is disposed in the accommodating cavity, the control circuit board is electrically connected to the water inlet valve and the water outlet valve, and the control circuit board is used to control the opening and closing of the water inlet valve and the water outlet valve.

[0026] In an optional embodiment, the handle is provided with a second key switch, and the second key switch is used to operate the control circuit board.

[0027] In an optional embodiment, the second key switch is located on a side of the handle facing away from the insertion portion.

[0028] In a second aspect, an embodiment of the present application further provides an endoscopic inspection device, comprising an endoscope as described in any of the foregoing items.

[0029] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solutions of the present application. It should be understood that the following drawings only illustrate certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the structure of an endoscope provided in an embodiment of the present application is shown;

[0032] Figure 2 An exploded view of an endoscope provided in an embodiment of the present application is shown;

[0033] Figure 3 A schematic diagram of the structure of a first housing provided in an embodiment of the present application is shown;

[0034] Figure 4 A schematic diagram of assembling the insertion portion and the end head provided in an embodiment of the present application is shown;

[0035] Figure 5 An exploded view of a core tube assembly provided in an embodiment of the present application is shown;

[0036] Figure 6 The figure shows an assembly diagram of the core tube assembly provided in the embodiment of the present application;

[0037] Figure 7 A schematic diagram of the structure of the core tube provided in an embodiment of the present application is shown;

[0038] Figure 8 A schematic diagram of the structure of a first end cover provided in an embodiment of the present application is shown;

[0039] Fig. 9 The following is a schematic diagram showing the assembly of the cable retracting and releasing structure provided in the embodiment of the present application;

[0040] Fig.10 A schematic diagram of the structure of a fixing block provided in an embodiment of the present application is shown;

[0041] Fig.11 A schematic diagram of assembling a fixing block provided in an embodiment of the present application is shown;

[0042] Fig.12 An exploded view of a sealing assembly provided in an embodiment of the present application is shown;

[0043] Fig.13 The figure shows an assembly diagram of the sealing assembly provided in the embodiment of the present application;

[0044] Fig.14 A schematic diagram of the structure of a knob provided in an embodiment of the present application is shown;

[0045] Fig.15 The figure shows an assembly diagram of a knob provided in an embodiment of the present application;

[0046] Fig.16 An exploded view of a detection component provided in an embodiment of the present application is shown;

[0047] Fig.17 The figure shows an assembly diagram of the detection component provided in the embodiment of the present application;

[0048] Fig.18 The figure shows an assembly diagram of the first transmission gear provided in the embodiment of the present application;

[0049] Reference numerals

[0050] 10. Endoscope;

[0051] 100, handle; 101, gripping area; 102, limiting structure; 110, main body; 111, first shell; 112, second shell; 120, first end sleeve; 130, second end sleeve; 140, water inlet connector; 141, water inlet valve; 150, water inlet pipe; 160, water outlet connector; 161, water outlet valve; 170, water outlet pipe; 180, peripheral connection line; 181, connection terminal; 190, key area; 191, first key switch; 192, second key switch;

[0052] 200, insertion portion; 210, inner tube; 220, outer tube; 221, fourth limiting portion;

[0053] 300, end; 310, camera module; 311, lighting module; 312, lens module; 320, water outlet; 330, water inlet; 340, cable retracting and releasing structure; 341, deformation part; 342, support part;

[0054] 400, core tube assembly; 410, core tube; 411, third position limiting portion; 412, first buckle; 413, first interface; 414, second interface; 415, first tube cavity; 416, second tube cavity; 417, first groove; 418, second groove; 419, second slot; 4101, second cutting groove; 4102, fourth buckle; 4103, outlet; 420, first end cover; 421, first connecting portion; 4 211, first slot; 4212, first cutting slot; 422, sixth position limiting portion; 430, sleeve; 431, first joint; 432, second joint; 433, first annular channel; 434, second annular channel; 435, fixing portion; 440, outer tube sealing ring; 450, inner tube sealing ring; 460, bracket; 461, guide portion; 470, first annular channel sealing ring; 480, second annular channel sealing ring;

[0055] 500, fixed block; 501, first limiting portion; 502, second limiting portion; 510, first fixed block; 520, second fixed block;

[0056] 600, sealing assembly; 610, duckbill valve; 611, flange; 620, rear sealing ring; 630, sealing sleeve; 631, second connecting portion; 6311, second buckle; 632, third slot; 640, second end cover; 641, third connecting portion; 6411, third buckle;

[0057] 700, knob; 701, fourth connecting portion; 7011, fourth slot; 702, operating surface;

[0058] 800, control circuit board;

[0059] 900, detection component; 910, rotation angle sensor; 920, first transmission gear; 921, fifth limiter; 922, mounting hole; 930, second transmission gear;

[0060] 1000.Front sealing ring. DETAILED DESCRIPTION

[0061] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0062] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0063] In some examples, the endoscopic inspection device includes an endoscope 10 and an image processor electrically connected to the endoscope 10. During inspection or surgery, the endoscope 10 can obtain images of the inspection site or the surgical site, which can be displayed to the inspector or doctor through a display device after being processed by the image processor.

[0064] refer to Figure 1 In some examples, the endoscope 10 may include a handle 100, an insertion portion 200, and a tip 300. The insertion portion 200 has a first end connected to the handle 100 and a second end away from the handle 100. The tip 300 is disposed at the second end of the insertion portion 200, and the tip 300 includes a camera module 310. When the insertion portion 200 is inserted into a human cavity, the camera module 310 can obtain images in the human cavity.

[0065] refer to Figure 1 In some examples, the handle 100 may extend at its bottom to form a gripping area 101 for the user to hold. In a specific implementation, the handle 100 may be pistol-shaped.

[0066] In some examples, the handle 100 may have a receiving cavity, and the insertion portion 200 is inserted into the receiving cavity of the handle from the front end of the handle 100. The front end is the end of the handle 100 that faces away from the operator when the operator holds it. In a specific implementation, the receiving cavity can be used to install cables and control devices electrically connected to the camera module 310.

[0067] refer to Figure 2 , Figure 4 , Figure 5 and Fig.11 In some examples, the insertion part 200 may include an inner tube 210 and an outer tube 220. The outer tube 220 is sleeved outside the inner tube 210, and a first channel is formed between the outer tube 220 and the inner tube 210. The first channel can be used to inject liquid medicine into the human body cavity, and can also be used to pass the cable connected to the camera module 310. A second channel is formed inside the inner tube 210, and the second channel can be used to discharge the liquid in the human body cavity, and can also be used as an instrument channel, that is, a channel for passing surgical instruments, such as sampling instruments and cutting instruments.

[0068] refer to Fig.11 In some examples, the outer tube 220 may be eccentrically disposed with respect to the inner tube 210. In this case, the inner diameter of the first channel can be increased as much as possible, thereby facilitating drainage and threading.

[0069] refer to Figure 4 In some examples, the end head 300 has a first end connected to the second end of the insertion part 200 and a second end away from the insertion part 200, and the second end of the end head 300 is provided with a camera module 310. In a specific implementation, the end head 300 can extend from its second end to its interior to form a receiving cavity, and the receiving cavity is used to install the camera module 310. In addition, a light-transmitting sheet can also be provided at the cavity opening of the receiving cavity to prevent the camera module 310 from being contaminated by the liquid in the human body cavity.

[0070] refer to Figure 4 In some examples, the tip 300 may form a water outlet 320 and a water inlet 330 on the periphery of the accommodating cavity. The water outlet 320 is connected to the first channel, and when the liquid medicine is injected into the human body cavity, the liquid medicine can be injected into the human body cavity through the water outlet 320. The water inlet 330 is connected to the second channel, and when the liquid in the human body cavity is discharged, the liquid can enter the second channel through the water inlet 330.

[0071] refer to Figure 4 In some examples, the end 300 can be inclined or bent relative to the second channel to avoid the second channel. In this case, the second channel can be prevented from being compressed by the accommodating cavity and causing a reduction in radial dimension, thereby ensuring that the surgical instrument can be smoothly extended to the affected area without increasing the radial dimensions of the end 300 and the outer tube 220.

[0072] refer to Figure 4 In some examples, the camera module 310 may include a lighting module 311 and a lens module 312. The lighting module 311 is configured to emit light to the outside, and the lens module 312 is configured to acquire external images. In this case, the brightness in the human body cavity can be increased, thereby ensuring that the image has sufficient clarity, which is conducive to improving image quality.

[0073] refer to Figure 2 and Figure 5 In some examples, the endoscope 10 may further include a core tube assembly 400 .

[0074] In some examples, the core tube assembly 400 is configured to fix the insertion portion 200 and drive the insertion portion 200 to rotate circumferentially relative to the handle 100 .

[0075] refer to Figure 5 and Figure 6 In some examples, the core tube assembly 400 may include a core tube 410, which is disposed in the accommodating cavity and sleeved on the first end of the insertion portion 200, and the core tube 410 may be configured to drive the insertion portion 200 to rotate circumferentially relative to the handle 100. Specifically, the core tube 410 is rotatably disposed in the accommodating cavity, and the core tube 410 may be circumferentially fixed to the insertion portion 200, and when the core tube 410 rotates circumferentially relative to the handle 100, the insertion portion 200 can be rotated circumferentially relative to the handle 100. In this case, the insertion portion 200 can be rotated circumferentially by operating the core tube 410, thereby adjusting the field of view of the camera module 310.

[0076] refer to Fig.10 and Fig.11 In some examples, a fixing block 500 may be provided between the core tube 410 and the inserting portion 200, and the fixing block 500 is configured to limit the circumferential rotation of the inserting portion 200 relative to the core tube 410. In this case, the inserting portion 200 and the core tube 410 can be circumferentially fixed. Moreover, compared with the method of using glue for circumferential fixing, such a setting can also simplify the process and improve the assembly efficiency.

[0077] In some examples, the fixing block 500 can be independently provided relative to the core tube 410 and the inserting portion 200. This can reduce the requirements of the core tube 410 and the inserting portion 200 on the tube material, such as the thickness of the tube material, thereby reducing the cost.

[0078] refer to Fig.10 and Fig.11In some examples, the fixing block 500 may be provided with a first limiting portion 501 and a second limiting portion 502. The first limiting portion 501 may cooperate with the third limiting portion 411 provided on the core tube 410 to limit the circumferential rotation of the fixing block 500 relative to the core tube 410. The second limiting portion 502 may cooperate with the fourth limiting portion 221 provided on the insertion portion 200 to limit the circumferential rotation of the insertion portion 200 relative to the fixing block 500. In this case, the fixing block 500 can be independently provided relative to the core tube 410 and the insertion portion 200, so as to help reduce the requirements of the core tube 410 and the insertion portion 200 on the tube material.

[0079] In some examples, one of the first limiting portion 501 and the third limiting portion 411 may be a groove, and the other may be a protrusion. Fig.10 and Fig.11 As shown, the first limiting portion 501 is a groove, and the third limiting portion 411 is a protrusion. When the third limiting portion 411 is accommodated in the first limiting portion 501, the circumferential fixation between the fixing block 500 and the core tube 410 can be achieved. The embodiment of the present application shows that the number of the first limiting portions 501 is multiple, and the multiple first limiting portions 501 are distributed at intervals along the circumference of the insertion portion 200.

[0080] In some examples, one of the second limiting portion 502 and the fourth limiting portion 221 may be a groove, and the other may be a protrusion. Fig.10 and Fig.11 As shown, the second limiting portion 502 is a protrusion, and the fourth limiting portion 221 is a groove. When the second limiting portion 502 is accommodated in the fourth limiting portion 221, the circumferential fixation between the insertion portion 200 and the fixing block 500 can be achieved.

[0081] In some examples, the number of the fixing blocks 500 may be multiple, and the multiple fixing blocks 500 are evenly distributed along the circumference of the insertion portion 200. Fig.10 and Fig.11 As shown, the fixing block 500 includes a first fixing block 510 and a second fixing block 520, both of which are semicircular, and are respectively located on both sides of the outer tube 220 and are arranged around the outer circumference of the outer tube 220. In this case, the core tube 410 and the insertion part 200 can be evenly stressed to avoid damage due to excessive local stress.

[0082] In some examples, the fixing block 500 can slide relative to the axial direction of the core tube 410. That is, the first limiting portion 501 and the second limiting portion 502 are slidably matched. Figure 6As shown, the fixing block 500 can be first assembled to the insertion part 200, and then the fixing block 500 and the insertion part 200 can be assembled to the core tube 410. In this case, it is easy to assemble the fixing block 500, which is conducive to improving the assembly efficiency.

[0083] In some examples, the first limit portion 501 and the third limit portion 411 may be constructed to limit the rotation angle of the insertion portion 200 when it is assembled on the core tube 410. That is, when the insertion portion 200 is at a specific rotation angle relative to the core tube 410, the insertion portion 200 can be inserted into the core tube 410, and when the insertion portion 200 is at an angle other than the specific rotation angle relative to the core tube 410, the insertion portion 200 cannot be inserted into the core tube 410. In a specific implementation, the intervals between the multiple first limit portions 501 may be different, or the depths of the multiple first limit portions 501 may be different, or the widths of the multiple first limit portions 501 may be different (e.g., Fig.10 In this case, the assembly accuracy of the insertion portion 200 and the core tube 410 can be guaranteed, and the accuracy of the inspection can be avoided from being affected by assembly errors.

[0084] In some examples, the second limiting portion 502 and the fourth limiting portion 221 can be configured to limit the position of each fixing block 500 in the insertion portion 200. That is, when the fixing block 500 is at a specific position relative to the insertion portion 200, the fixing block 500 can be assembled to the insertion portion 200, and when the fixing block 500 is at a position other than the specific position relative to the insertion portion 200, the fixing block 500 cannot be assembled to the insertion portion 200. In a specific implementation, the second limiting portions 502 located at different fixing blocks 500 can have different lengths, or the second limiting portions 502 located at different fixing blocks 500 can have different widths, or the second limiting portions 502 located at different fixing blocks 500 can have different heights, etc. In this case, the foolproof function can be achieved to ensure the accuracy of the assembly of the insertion portion 200.

[0085] In some examples, the core tube 410 may have a first end sleeved on the insertion portion 200 and a second end away from the insertion portion 200 .

[0086] refer to Figure 5 and Figure 8 In some examples, the core tube assembly may further include a first end cap 420, which may be disposed at a first end of the core tube 410, and the first end cap 420 may be configured to limit the insertion portion 200 from being dislodged from the core tube 410. Specifically, the first end cap 420 may be limitedly matched with the fixing block 500 to limit the insertion portion 200 from being dislodged from the core tube 410.

[0087] refer to Figure 5 and Figure 8In some examples, the first end cap 420 may have a first connection portion 421, and the first connection portion 421 is detachably connected to the core tube 410. In a specific implementation, the insertion portion 200 may be inserted into the core tube 410 first, and then the first end cap 420 may be connected to the first end of the core tube 410, thereby limiting the insertion portion.

[0088] In some examples, the first connection portion 421 and the core tube 410 may be connected in a snap-fit ​​manner. Figure 5 , Figure 7 and Figure 8 As shown, the first connecting portion 421 is provided with a first clamping groove 4211, and the first end of the core tube 410 is provided with a first buckle 412. When the first clamping groove 4211 and the first buckle 412 are engaged, the first end cover 420 and the core tube 410 are buckled together. In this case, the first end cover 420 can be easily disassembled and assembled, thereby facilitating the assembly efficiency.

[0089] refer to Figure 6 In some examples, the first connection portion 421 is sleeved on the first end of the core tube 410, and the first connection portion 421 is configured to be able to radially expand and contract when moving relative to the axial direction of the core tube 410. When contracted, the first connection portion 421 and the core tube 410 are snap-connected, and when extended, the first connection portion 421 and the core tube 410 are disconnected. Specifically, when the first end cover 420 moves relative to the axial direction of the core tube 410, the first connection portion 421 can radially contract or expand, thereby achieving connection or disconnection.

[0090] refer to Figure 5 and Figure 8 In some examples, the first connection portion 421 may be provided with a first groove 4212, and the first groove 4212 is provided along the axial direction of the core tube 410. In this case, the first connection portion 421 can be easily deformed, so that the first connection portion 421 is easy to engage or separate with the first end of the core tube 410.

[0091] In some examples, the core tube assembly 400 is further configured to form a water inlet and outlet channel with the insert portion 200 , so that the first channel enables water inlet and the second channel enables water outlet.

[0092] refer to Figure 5 , Figure 6 and Fig. 9 In some examples, the endoscope 10 may further include a sleeve 430, which is disposed in the accommodating cavity and sleeved on the first connecting portion 421. In this case, failure of the connection between the first end cap 420 and the core tube 410 due to expansion of the first connecting portion 421 under force can be avoided.

[0093] refer to Figure 6In some examples, the sleeve 430 can also be sleeved outside the core tube 410. Specifically, the sleeve 430 is connected and fixed to the handle 100 and rotates with the core tube 410. In this case, the core tube 410 can be supported to prevent the core tube 410 from moving in the accommodating cavity, which is beneficial to the stability of the structure.

[0094] refer to Figure 6 In some examples, a water inlet channel and a water outlet channel are formed between the sleeve 430 and the insertion part 200. The water inlet channel is used to connect the outer tube 220 to the outside, and the water outlet channel is used to connect the inner tube 210 to the outside. Specifically, the core tube 410 is provided with a first interface 413 and a second interface 414, and a first lumen 415 and a second lumen 416 are formed between the core tube 410 and the insertion part 200. The first interface 413 and the outer tube 220 are connected through the first lumen 415, and the second interface 414 and the inner tube 210 are connected through the second lumen 416; the sleeve 430 is provided with a first joint 431 and a second joint 432, and a first annular channel 433 and a second annular channel 434 are formed between the sleeve 430 and the core tube 410, and the first joint 431 and the first interface 413 are connected through the first annular channel 433, and the second joint 432 and the second interface 414 are connected through the second annular channel 434. That is, the first lumen 415, the first interface 413, the first annular channel 433 and the first joint 431 are connected in sequence to form a water inlet channel, and the second lumen 416, the second interface 414, the second annular channel 434 and the second joint 432 are connected in sequence to form a water outlet channel. In this case, the water inlet and the water outlet can be separated and isolated to prevent the discharged contaminated water from re-entering the surgical operation space.

[0095] In some examples, the number of the first interface 413 and the second interface 414 can be multiple, and the multiple first interfaces 413 and the multiple second interfaces 414 are distributed along the circumference of the core tube 410. In this case, the flow area can be increased, which is conducive to improving the water inlet and outlet efficiency.

[0096] refer to Figure 5 and Figure 6 In some examples, an outer tube sealing ring 440 may be provided between the core tube 410 and the outer tube 220. In this case, the gap between the outer tube 220 and the core tube 410 can be sealed, thereby ensuring the sealing of the structure.

[0097] refer to Figure 6In some examples, the outer tube sealing ring 440 can be located between the first end cover 420 and the fixing block 500. In this case, the axial movement of the outer tube sealing ring 440 relative to the core tube 410 can be limited, or the range of motion of the outer tube sealing ring 440 can be limited, thereby preventing the outer tube sealing ring 440 from blocking the first interface 413 and affecting the drainage effect, which is conducive to ensuring the reliability of the structure. In addition, such a setting can also prevent the outer tube sealing ring 440 from falling out of the core tube 410, thereby preventing the outer tube sealing ring 440 from falling out of the core tube 410 and affecting the sealing of the structure.

[0098] refer to Figure 5 and Figure 6 In some examples, an inner tube sealing ring 450 may be provided between the core tube 410 and the inner tube 210. The embodiment of the present application shows that the inner tube sealing ring 450 is located in the second tube cavity 416. In this case, the gap between the inner tube 210 and the core tube 410 can be sealed to ensure the sealing between the first tube cavity 415 and the second tube cavity 416.

[0099] refer to Figure 6 In some examples, the second tube cavity 416 may be provided with a bracket 460, and the bracket 460 may be configured to limit the axial movement of the inner tube sealing ring 450 relative to the core tube 410. In this case, it is possible to prevent the inner tube sealing ring 450 from affecting the flow performance due to blocking the second interface 414, which is conducive to ensuring the reliability of the structure.

[0100] refer to Figure 5 and Figure 6 In some examples, the bracket 460 has a guide portion 461, which is used to guide the surgical instrument to pass through the second channel. In a specific implementation, the guide portion 461 can be a tapered opening provided at the second end of the bracket 460 facing the core tube 410. In this case, it is easy to pass the surgical instrument, which is conducive to improving the convenience of operation.

[0101] refer to Figure 5 and Figure 6 In some examples, a first annular channel sealing ring 470 may be provided between the core tube 410 and the sleeve 430, and the first annular channel sealing ring 470 is located on both sides of the first annular channel 433. In this case, the sealing performance of the first annular channel 433 can be guaranteed.

[0102] refer to Figure 5 , Figure 6 and Figure 7In some examples, the outer wall of the core tube 410 may be provided with a first groove 417, and the first annular channel sealing ring 470 is provided in the first groove 417. In this case, the first annular channel sealing ring 470 can be limited, thereby preventing the first annular channel sealing ring 470 from moving along the axial direction of the core tube 410 and affecting the sealing performance of the first annular channel 433.

[0103] refer to Figure 5 and Figure 6 In some examples, a second annular channel sealing ring 480 may be provided between the core tube 410 and the tube sleeve 430, and the second annular channel sealing ring 480 is located on both sides of the second annular channel 434. In this case, the sealing performance of the second annular channel 434 can be guaranteed.

[0104] refer to Figure 5 , Figure 6 and Figure 7 In some examples, the outer wall of the core tube 410 may be provided with a second groove 418, and the second annular channel sealing ring 480 is provided in the second groove 418. In this case, the second annular channel sealing ring 480 can be limited, thereby preventing the second annular channel sealing ring 480 from moving along the axial direction of the core tube 410 and affecting the sealing performance of the second annular channel 434.

[0105] refer to Figure 1 and Figure 2 In some examples, the handle 100 may be provided with a water inlet connector 140 and a water inlet pipe 150 connected between the water inlet connector 140 and the first connector 431. In this case, the first connector 431 can be connected to an external water supply pipeline to achieve water supply.

[0106] refer to Figure 1 and Figure 2 In some examples, the handle 100 may be provided with a water outlet connector 160 and a water outlet pipe 170 connected between the water outlet connector 160 and the second connector 432. In this case, the second connector 432 can be connected to an external drainage pipeline to achieve drainage.

[0107] refer to Figure 1 and Figure 2 In some examples, the water inlet connector 140 and the water outlet connector 160 may be located at the bottom of the handle 100. Specifically, the water inlet connector 140 and the water outlet connector 160 may be located at the bottom of the gripping area 101. In this case, the influence of the water supply and drainage pipeline on the operator can be reduced, which is conducive to improving the detection efficiency.

[0108] refer to Figure 1 and Figure 2In some examples, the water inlet joint 140 may be provided with a water inlet valve 141, and the water outlet joint 160 may be provided with a water outlet valve 161. In this case, it is possible to facilitate control of water supply and drainage.

[0109] refer to Fig.12 and Fig.13 In some examples, the endoscope 10 may further include a sealing assembly 600, which may be disposed at the second end of the core tube 410. The sealing assembly 600 is configured to seal the second end of the core tube 410 and allow surgical instruments to pass through the second channel. Specifically, the sealing assembly 600 can seal the second end of the core tube 410 before and after the surgical instruments are installed. In this case, the sealing performance of the structure can be prevented from being affected by the passing of surgical instruments.

[0110] refer to Fig.12 and Fig.13 In some examples, the sealing assembly 600 may include a duckbill valve 610 and a rear sealing ring 620. The duckbill valve 610 is located in the second end of the core tube 410, and the duckbill valve 610 may be configured to be openable and closable. When opened, the duckbill valve 610 allows the surgical instrument to pass through the second channel, and when closed, the duckbill valve 610 closes the second end of the core tube 410. The rear sealing ring 620 is located in the second end of the core tube 410, and the rear sealing ring 620 may be configured to seal the second end of the core tube 410 when the surgical instrument passes through the second channel. That is, before the surgical instrument is passed through, the sealing assembly 600 may seal the second end of the core tube 410 through the duckbill valve 610, and after the surgical instrument is passed through, the sealing assembly 600 may seal the second end of the core tube 410 through the rear sealing ring 620. In this case, the second end of the core tube 410 can be sealed and the surgical instrument can be allowed to pass through the second channel.

[0111] refer to Fig.13 In some examples, the duckbill valve 610 is located on the side of the rear sealing ring 620 facing the insertion portion 200. This arrangement allows the surgical instrument to form a seal with the rear sealing ring 620 before passing through the duckbill valve 610, so that the second end of the core tube 410 can always remain sealed.

[0112] refer to Fig.12 and Fig.13 In some examples, the sealing assembly 600 may further include a sealing sleeve 630, the sealing sleeve 630 is connected to the second end of the core tube 410, and the duckbill valve 610 and the rear sealing ring 620 are both sleeved in the sealing sleeve 630. In other words, the duckbill valve 610 and the rear sealing ring 620 may be pre-installed in the sealing sleeve 630. In this way, the assembly efficiency of the duckbill valve 610 and the rear sealing ring 620 may be improved.

[0113] refer to Fig.12 In some examples, the sealing sleeve 630 may have a second connecting portion 631 , and the second connecting portion 631 is detachably connected to the core tube 410 .

[0114] In some examples, the second connection portion 631 and the core tube 410 may be connected in a snap-fit ​​manner. Fig.12 As shown, the second connecting portion 631 is provided with a second buckle 6311, and the second end of the core tube 410 is provided with a second clamping groove 419. When the second clamping groove 419 and the second buckle 6311 are engaged, the second connecting portion 631 and the core tube 410 are buckled together. In this case, it is easy to disassemble and assemble the sealing sleeve 630, which is conducive to improving assembly efficiency.

[0115] refer to Fig.12 and Fig.13 In some examples, the second end of the core tube 410 is sleeved on the second connection portion 631, and the second end of the core tube 410 is configured to be able to radially expand and contract when moving relative to the axial direction of the core tube 410. When contracting, the second connection portion 631 and the core tube 410 are snap-connected, and when extending, the second connection portion 631 and the core tube 410 are disconnected. Specifically, when the sealing sleeve 630 moves relative to the axial direction of the core tube 410, the second end of the core tube 410 can be radially contracted or extended, thereby achieving connection or disconnection.

[0116] refer to Figure 5 and Figure 7 In some examples, the second end of the core tube 410 may be provided with a second groove 4101, and the second groove 4101 is provided along the axial direction of the core tube 410. In this case, the second end of the core tube 410 can be easily deformed, so that the second connecting portion 631 and the second end of the core tube 410 are easily engaged or separated.

[0117] refer to Fig.12 and Fig.13 In some examples, the duckbill valve 610 has a flange 611 on the side facing the insertion portion 200, and the sealing sleeve 630 is adapted to press the flange 611 when assembled on the second end of the core tube 410. Specifically, the flange 611 is located on the side of the sealing sleeve 630 facing the insertion portion 200, and when the sealing sleeve 630 is connected to the second end of the core tube 410, the sealing sleeve 630 and the core tube 410 can clamp the flange 611, thereby fixing the duckbill valve 610.

[0118] refer to Fig.12 and Fig.13In some examples, the sealing assembly 600 may further include a second end cap 640, the second end cap 640 being connected to the sealing sleeve 630, and the second end cap 640 being adapted to compress the rear sealing ring 620 when assembled to the sealing sleeve 630. Specifically, when the second end cap 640 is connected to the sealing sleeve 630, the second end cap 640 and the sealing sleeve 630 can clamp the rear sealing ring 620, thereby fixing the rear sealing ring 620. In addition, such a configuration also enables the rear sealing ring 620 to be installed from the end of the sealing sleeve 630 away from the insertion portion 200, so that the assembly efficiency of the duckbill valve 610 and the rear sealing ring 620 can be further improved.

[0119] refer to Fig.12 In some examples, the second end cover 640 may have a third connection portion 641 , and the third connection portion 641 is detachably connected to the sealing sleeve 630 .

[0120] In some examples, the third connection portion 641 and the sealing sleeve 630 may be connected in a snap-fit ​​manner. Fig.12 As shown, the sealing sleeve 630 is provided with a third clamping groove 632, and the third connecting portion 641 is provided with a third buckle 6411. When the third clamping groove 632 and the third buckle 6411 are engaged, the sealing sleeve 630 and the second end cover 640 are buckled and connected. In this case, the second end cover 640 can be easily disassembled and assembled, which is conducive to improving assembly efficiency.

[0121] refer to Fig.12 and Fig.13 In some examples, the end of the sealing sleeve 630 away from the core tube 410 is sleeved outside the third connection portion 641, and the end of the sealing sleeve 630 away from the core tube 410 can be configured to be able to radially expand and contract when moving axially relative to the second end cover 640. When contracting, the sealing sleeve 630 and the second end cover 640 are snap-connected, and when extending, the sealing sleeve 630 and the second end cover 640 are disconnected. Specifically, when the sealing sleeve 630 moves axially relative to the second end cover 640, the end of the sealing sleeve 630 away from the core tube 410 can be radially contracted or extended, thereby achieving connection or disconnection.

[0122] refer to Figure 1 , Figure 2 , Fig.14 and Fig.15 In some examples, the endoscope 10 may further include a knob 700, which is sleeved on the second end of the core tube 410 and the sealing sleeve 630. In this case, it is possible to avoid connection failure caused by the second end of the core tube 410 and the sealing sleeve 630 expanding due to force.

[0123] refer to Figure 1In some examples, the knob 700 is rotatably disposed on the handle 100, and the knob 700 is connected to the core tube 410. The knob 700 is used to transmit torque to the core tube 410 so that the core tube 410 drives the insertion part 200 to rotate circumferentially relative to the handle 100. In this case, the core tube 410 can be rotated circumferentially by operating the knob 700, thereby driving the insertion part 200 to rotate circumferentially to adjust the field of view of the camera module 310.

[0124] refer to Figure 1 In some examples, the knob 700 may be located at the second end of the core tube 410, and the knob 700 is connected to the second end of the core tube 410. That is, the knob 700 is located on the side of the endoscope 10 facing the operator. In this case, it is convenient for the operator to operate the knob 700, and the risk of the knob 700 being contaminated can be reduced.

[0125] refer to Fig.14 and Fig.15 In some examples, the knob 700 may have a fourth connection portion 701 , and the fourth connection portion 701 is detachably connected to the core tube 410 .

[0126] In some examples, the fourth connection portion 701 and the core tube 410 may be connected in a snap-fit ​​manner. Fig.14 As shown, the fourth connecting portion 701 is provided with a fourth slot 7011, and the second end of the core tube 410 is provided with a fourth buckle 4102. When the fourth slot 7011 and the fourth buckle 4102 are engaged, the knob 700 and the core tube 410 are buckled together. In this case, the knob 700 can be easily disassembled and assembled, which is conducive to improving assembly efficiency.

[0127] refer to Fig.14 In some examples, the knob 700 may have an operating surface 702, and the operating surface 702 is provided with an anti-skid structure. In a specific implementation, the anti-skid structure may be selected from one of protective stripes, protective coatings, and protective particles. In this case, the force required to operate the knob 700 can be reduced, thereby facilitating the operator to operate the knob 700. In addition, since the anti-skid surface is provided, the knob 700 can also be operated to prevent slipping.

[0128] refer to Figure 2 In some examples, the endoscope 10 may further include a control circuit board 800, which is disposed in the accommodating cavity, and is electrically connected to the camera module 310, and the control circuit board 800 is used to control the camera module 310 to obtain images of the human body cavity. In this case, the camera module 310 can be controlled to obtain images of the human body cavity by operating the control circuit board 800.

[0129] In some examples, the control circuit board 800 is electrically connected to a connection cable disposed in the camera module 310. Figure 5 In the specific implementation, Figure 5 As shown, the side wall of the core tube 410 can be provided with a wire outlet 4103, and the two ends of the connection cable passing through the wire outlet 4103 are respectively electrically connected to the camera module 310 and the control circuit board 800. In this case, the electrical connection between the control circuit board 800 and the camera module 310 can be achieved.

[0130] refer to Figure 2 and Fig. 9 In some examples, the connecting cable may be provided with a cable retracting structure 340, and the cable retracting structure 340 may be constructed to be deformable and resilient. When deformed, the cable retracting structure 340 allows the connecting cable to be wound around the core tube 410, and when restored, the cable retracting structure 340 retracts the connecting cable wound around the core tube 410. Specifically, in the process of adjusting the field of view of the camera module 310, the core tube 410 rotates circumferentially relative to the sleeve 430 or the handle 100, so that the connecting cable will be wound around the outside of the core tube 410. If the connecting cable cannot be retracted when the core tube 410 is reset, the connecting cable may be irregularly wound and damaged. Therefore, by providing a cable retracting structure 340 to retract the connecting cable wound around the core tube 410, irregular winding of the connecting cable can be avoided, thereby protecting the connecting cable from damage. It should be noted that, since the core tube 410 can rotate in two directions, namely, clockwise and counterclockwise, the cable retracting structure 340 of the embodiment of the present application should not be limited to the rotation direction of the core tube 410 when deforming or restoring.

[0131] In some examples, the cable retractable structure 340 may be deformed in a specific manner by contraction, stretching, or bending, etc. It should be noted that the cable retractable structure 340 may also be deformed in other manners, which is not specifically limited in the embodiment of the present application.

[0132] In some examples, the cable retracting structure 340 can be specifically configured to accumulate elastic potential energy when deformed and to recover based on the elastic potential energy. In this case, the cable retracting structure 340 can be automatically recovered. In addition, compared with using a cable winding device to retract the cable, the cable retracting structure 340 has a simple structure and does not require a driving device, which is conducive to reducing the structural load and facilitating the operation of the operator.

[0133] In some examples, the cable retracting structure 340 may be made of an elastic soft material, such as silicone, latex, or rubber.

[0134] refer to Figure 2 and Fig. 9In some examples, the cable retracting structure 340 may be a tubular structure, and the cable retracting structure 340 is sleeved on the connecting cable. In this case, the cable retracting structure 340 can be used to protect the connecting cable to prevent friction damage to the surface of the connecting cable.

[0135] refer to Fig. 9 In some examples, the cable retracting structure 340 can be disposed at a portion of the connecting cable between the cable outlet 4103 and the control circuit board 800. In this case, it is possible to avoid affecting the drainage effect of the first channel due to the cable retracting structure 340 being disposed in the first channel. In addition, since the cable retracting structure 340 is only disposed locally on the connecting cable, the amount of material used can be reduced, saving costs.

[0136] refer to Fig. 9 In some examples, the cable retracting structure 340 may include a deformation portion 341 and a support portion 342. The deformation portion 341 is freely arranged for deformation and restoration, and the support portion 342 is connected and fixed to the sleeve 430 and supports the deformation portion 341. In a specific implementation, the cable retracting structure 340 may be divided into two sections, one of which is the deformation portion 341 and the other is the support portion 342. In this case, it is possible to avoid that the cable retracting structure 340 as a whole moves with the connected cable and cannot accumulate elastic potential energy, thereby ensuring the recovery effect of the cable retracting structure 340.

[0137] refer to Fig. 9 In some examples, the support portion 342 can be connected and fixed to the fixing portion 435 provided on the sleeve 430, and the support portion 342 and the fixing portion 435 can be connected in a clamping manner. For example, the fixing portion 435 is a clamping block, and the clamping block can clamp the support portion 342 to fix the support portion 342. In this case, it is easy to fix the support portion 342, which is conducive to improving assembly efficiency.

[0138] refer to Figure 1 and Figure 2 In some examples, the handle 100 may be provided with an external device connection line 180, and the external device connection line 180 is used to electrically connect the control circuit board 800 to an external device. In this case, it is convenient to electrically connect the control circuit board 800 to an external device, such as an image processor, a computer, etc.

[0139] refer to Figure 1 In some examples, the peripheral connection line 180 may be located at the bottom of the handle 100. In a specific implementation, in this case, it is possible to prevent the contaminated liquid from entering the interior of the handle 100 from the gap between the peripheral connection line 180 and the handle 100, thereby contaminating the internal devices.

[0140] refer to Figure 1 and Figure 2 In some examples, the peripheral connection line 180 may be provided with a connection terminal 181, and the peripheral connection line 180 is electrically connected to the external device through the connection terminal 181. In a specific implementation, the connection terminal 181 may be a metal contact or a USB Type-C connector. In this case, it is convenient to electrically connect the peripheral connection line 180 to the external device, which is safer and more convenient than the traditional direct wiring method.

[0141] refer to Figure 1 and Figure 2 In some examples, the handle 100 may be provided with a button area 190 that cooperates with the control circuit board 800 for operating the control circuit board 800 .

[0142] refer to Figure 1 and Figure 2 In some examples, the key area 190 may be provided with a first key switch 191, and the first key switch 191 is used to operate the control circuit board 800 so that the control circuit board 800 controls the camera module 310 to acquire an image.

[0143] refer to Figure 1 In some examples, the key area 190 may be located on the side of the handle 100 that faces away from the insertion portion 200. In this case, it is possible to prevent the contaminated liquid from entering the interior of the handle 100 from the gap between the key area 190 and the handle 100, thereby contaminating the internal components. In addition, since the key area 190 is located on the side of the handle 100 that faces away from the insertion portion 200, that is, the key area 190 is located on the side of the handle 100 that faces the operator, such a configuration can facilitate the operator to operate the keys.

[0144] In some examples, the control circuit board 800 can also be used to control the opening and closing of the water inlet valve 141 and the water outlet valve 161. Specifically, the control circuit board 800 is electrically connected to the water inlet valve 141 and the water outlet valve 161, respectively, and the opening and closing of the water inlet valve 141 and the water outlet valve 161 can be realized by operating the control circuit board 800.

[0145] refer to Figure 1 and Figure 2 In some examples, in order to facilitate the control of the opening and closing of the water inlet valve 141 and the water outlet valve 161, the key area 190 can also be provided with a second key switch 192, and the second key switch 192 is used to operate the control circuit board 800 so that the control circuit board 800 controls the opening and closing of the water inlet valve 141 and the water outlet valve 161.

[0146] refer to Figure 2 , Fig.16 and Fig.17In some examples, the endoscope 10 may further include a detection component 900, which is disposed in the accommodating cavity and is used to obtain the rotation direction and rotation angle of the insertion portion 200. In this case, the rotation information (rotation direction and rotation angle) of the insertion portion can be detected, so that the direction and angle of the image can be corrected based on the detection information for easy inspection by the operator.

[0147] In some examples, the detection assembly 900 may include a rotation angle sensor 910, which may be sleeved outside the insertion portion 200 and circumferentially fixed to the insertion portion 200. Exemplarily, the rotation angle sensor 910 is connected and fixed to the first end cap 430 so that the rotation angle sensor 910 can be circumferentially fixed to the insertion portion 200. In this case, the rotation angle sensor 910 can rotate with the insertion portion 200, thereby obtaining rotation information of the insertion portion 200.

[0148] refer to Fig.16 and Fig.17 In some examples, the detection assembly 900 may include a rotation angle sensor 910 and a transmission mechanism. The rotation angle sensor 910 is connected and fixed to the handle 100. The transmission mechanism is arranged between the insertion portion 200 and the rotation angle sensor 910, and the transmission mechanism is used to transmit the rotation information of the insertion portion 200 to the rotation angle sensor 910, so that the rotation angle sensor 910 obtains the rotation direction and rotation angle of the insertion portion 200. In this case, the detection of the rotation direction and rotation angle of the insertion portion 200 can be achieved.

[0149] In some examples, the transmission mechanism can be driven by gear transmission. Compared with other transmission methods, gear transmission has high precision, which is conducive to improving the accuracy of detection.

[0150] refer to Fig.16 and Fig.17 In some examples, the transmission mechanism may include a first transmission gear 920 and a second transmission gear 930, wherein the first transmission gear 920 is sleeved on the insertion portion 200 (outer tube 220), the second transmission gear 930 is sleeved on the rotating shaft of the rotation angle sensor 910, and the second transmission gear 930 is meshed with the first transmission gear 920. In this case, the gear transmission of the core tube 410 and the rotation angle sensor 910 can be realized.

[0151] In some examples, the transmission ratio of the first transmission gear 920 and the second transmission gear 930 may be 2: 1. It is understandable that the transmission ratio of the first transmission gear 920 and the second transmission gear 930 may also be other values, which will not be described in detail in the embodiment of the present application.

[0152] refer to Fig.16 and Fig.17 In some examples, the first transmission gear 920 and the second transmission gear 930 can both be bevel gears. Compared with ordinary gears, bevel gears have low noise, stable operation, and low installation space requirements, which is conducive to reducing the structural size.

[0153] In some examples, the first transmission gear 920 can be circumferentially fixed to the insertion portion 200 and located between the core tube 410 and the limiting structure 102 provided on the handle 100. In this case, the first transmission gear 920 can be fixed by limiting the position to prevent the first transmission gear 920 from axially moving relative to the insertion portion 200. Compared with the method of fixing the first transmission gear 920 with a connecting member or a connecting structure, this arrangement is simple and convenient to install, which is conducive to improving assembly efficiency.

[0154] In some examples, the first transmission gear 920 may be circumferentially fixed to the insert portion 200 by the first end cap 420 or the core tube 410. Figure 8 and Fig.16 As shown, the first transmission gear 920 is provided with a fifth limiting portion 921, and the fifth limiting portion 921 cooperates with the sixth limiting portion 422 provided on the first end cover 420. Among them, one of the fifth limiting portion 921 and the sixth limiting portion 422 is a groove, and the other is a protrusion. In this case, the circumferential fixation of the first transmission gear 920 and the insertion portion 200 can be achieved, so that the first transmission gear 920 can transmit the rotation information of the core tube 410 and the insertion portion 200 to the rotation angle sensor 910.

[0155] refer to Fig.16 and Fig.18 In some examples, the first transmission gear 920 may have a mounting hole 922, and the mounting hole 922 is used to sleeve the first transmission gear 920 on the insertion portion 200, and the aperture of the mounting hole 922 gradually increases from the first end of the insertion portion 200 to the second end of the insertion portion 200. In other words, there may be a gap between the first transmission gear 920 and the insertion portion 200, and the gap gradually increases from the first end of the insertion portion 200 to the second end of the insertion portion 200, and may be horn-shaped. In a specific implementation, the aperture of the mounting hole 922 may only change at one end of the first transmission gear 920 away from the core tube 410. In this case, the gap between the first transmission gear 920 and the insertion portion 200 can be used to disperse the root stress of the insertion portion 200 when it is bent under force, thereby reducing the possibility of deformation and damage of the outer tube 220.

[0156] refer to Figure 2 and Fig.17In some examples, a front sealing ring 1000 may be provided between the insertion portion 200 and the handle 100. In a specific implementation, the front sealing ring 1000 can achieve a seal between the handle 100 and the insertion portion 200 to prevent contaminated liquid from entering the interior of the handle 100. In addition, the front sealing ring 1000 can also play a supporting role for the insertion portion 200, and can cooperate with the first transmission gear 920 to disperse the root stress of the outer tube 220 when it is bent under force. It should be noted that in some embodiments, it is necessary to rotate the insertion portion 200 with the axis of the inner tube 210 as the rotation center to avoid interference between the insertion portion 200 and the surgical instrument during the rotation process. Therefore, the hole of the front sealing ring 1000 can be eccentrically set to meet the rotation requirements of the insertion portion 200.

[0157] refer to Figure 1 In some examples, the handle 100 may include a main body 110 , the main body 110 includes a first shell 111 and a second shell 112 , and the first shell 111 and the second shell 112 enclose a receiving cavity.

[0158] In some examples, the first housing 111 and the second housing 112 may be connected in a snap-fit ​​manner, which facilitates assembly and disassembly of the first housing 111 and the second housing 112 and improves assembly efficiency.

[0159] refer to Figure 1 and Figure 2 In some examples, the handle 100 further includes a first end sleeve 120, which is mounted at the front end of the main body 110. The first end sleeve 120 is adapted to fasten the first shell 111 and the second shell 112 when mounted on the main body 110. For example, the first end sleeve 120 may be sleeved at the front end of the main body 110 and partially wrap the first shell 111 and the second shell 112. In this case, the main body 110 may be reinforced by the first end sleeve 120, thereby facilitating improving the structural strength of the handle 100.

[0160] In some examples, the first end sleeve 120 is connected to the main body 110 by snap-fitting. In this case, it is easy to disassemble and assemble the first end sleeve 120, which is conducive to improving assembly efficiency. In addition, in this configuration, the second end sleeve 130 can also be used to reinforce the main body 110, which is conducive to improving the structural strength of the handle 100.

[0161] refer to Figure 1 and Figure 2In some examples, the handle 100 further includes a second end sleeve 130, which is mounted at the bottom of the main body 110. The second end sleeve 130 is adapted to fasten the first shell 111 and the second shell 112 when mounted on the main body 110. For example, a cavity opening communicating with the accommodating cavity is provided at the bottom of the gripping area 101, and the second end sleeve 130 can be mounted at the cavity opening and connected to the first shell 111 and the second shell 112, respectively.

[0162] In some examples, the second end sleeve 130 is connected to the main body 110 by snap-fitting. In this case, it is easy to disassemble and assemble the first end sleeve 120, which is conducive to improving assembly efficiency. In addition, in this configuration, the second end sleeve 130 can also be used to reinforce the main body 110, thereby facilitating improving the structural strength of the handle 100.

[0163] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this application.

[0164] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An endoscope, characterized in that: include: A handle having a receiving cavity; An insertion portion having a first end passing through the handle and a second end away from the handle; A core tube is rotatably disposed in the accommodating cavity, the core tube is sleeved on the first end of the inserting portion and is circumferentially fixed to the inserting portion; Wherein, the insertion portion has an instrument channel; The core tube has a first end sleeved on the insertion portion and a second end away from the insertion portion, and the second end of the core tube is provided with a sealing assembly, which includes a duckbill valve and a rear sealing ring; The duckbill valve is located in the second end of the core tube, and the duckbill valve is configured to be openable and closable. When opened, the duckbill valve allows surgical instruments to pass through the instrument channel, and when closed, the duckbill valve seals the second end of the core tube. The rear sealing ring is located inside the second end of the core tube, and is configured to seal a gap between the surgical instrument and the core tube when the surgical instrument is inserted into the instrument channel.

2. The endoscope according to claim 1, characterized in that The duckbill valve is located on a side of the rear sealing ring facing the insertion portion.

3. The endoscope according to claim 2, characterized in that The sealing assembly also includes a sealing sleeve, which is connected to the second end of the core tube, and the duckbill valve and the rear sealing ring are both sleeved in the sealing sleeve.

4. The endoscope according to claim 3, characterized in that The sealing sleeve is connected to the second end of the core tube in a buckle manner.

5. The endoscope according to claim 3, characterized in that The duckbill valve has a flange on a side facing the insertion portion; The seal sleeve is adapted to compress the flange when assembled on the second end of the core tube.

6. The endoscope according to claim 3, characterized in that: The sealing assembly further comprises a second end cover, the second end cover being connected to the sealing sleeve, and the second end cover being adapted to compress the rear sealing ring when assembled on the sealing sleeve.

7. The endoscope according to claim 6, characterized in that The second end cover is connected to the sealing sleeve by means of a snap buckle.

8. The endoscope according to claim 1, characterized in that: The endoscope further comprises a tube sleeve, which is sleeved on the core tube and rotatably matched with the core tube, and the tube sleeve is connected and fixed to the handle.

9. The endoscope according to claim 8, characterized in that The inserting portion includes an outer tube and an inner tube; The core tube is provided with a first interface and a second interface, a first lumen and a second lumen are formed between the core tube and the insertion portion, the first interface and the outer tube are connected through the first lumen, and the second interface and the inner tube are connected through the second lumen; The sleeve is provided with a first joint and a second joint, a first annular channel and a second annular channel are formed between the sleeve and the core tube, the first joint and the first interface are connected through the first annular channel, and the second joint and the second interface are connected through the second annular channel.

10. The endoscope according to claim 9, characterized in that An outer tube sealing ring is arranged between the core tube and the outer tube.

11. The endoscope according to claim 9, characterized in that: An inner tube sealing ring is arranged between the core tube and the inner tube.

12. The endoscope according to claim 9, characterized in that A first annular channel sealing ring and a second annular channel sealing ring are arranged between the core tube and the tube sleeve; wherein, The first annular channel sealing ring is located on both sides of the first annular channel; The second annular channel sealing ring is located on both sides of the second annular channel.

13. The endoscope according to claim 9, characterized in that The second lumen is provided with a stent, and the stent is configured to guide the surgical instrument.

14. The endoscope according to claim 9, characterized in that The handle is provided with a water inlet joint and a water outlet joint, a water inlet pipe is connected between the water inlet joint and the first joint, and a water outlet pipe is connected between the water outlet joint and the second joint.

15. The endoscope according to claim 14, characterized in that The water inlet joint is provided with a water inlet valve, and the water outlet joint is provided with a water outlet valve.

16. The endoscope according to claim 15, characterized in that The endoscope further comprises a control circuit board, which is arranged in the accommodating cavity, and is electrically connected to the water inlet valve and the water outlet valve, and is used to control the opening and closing of the water inlet valve and the water outlet valve.

17. The endoscope according to claim 16, characterized in that The handle is provided with a second key switch, and the second key switch is used to operate the control circuit board.

18. The endoscope according to claim 17, characterized in that The second button switch is located on a side of the handle facing away from the insertion portion.

19. An endoscopy device, characterized in that: Comprising an endoscope as described in any one of claims 1-18.

Images