Endoscopes and endoscopy devices

Abstract

The application provides an endoscope and an endoscopy device. The endoscope comprises a handle, a first end of which is provided with a receiving cavity; an insertion part, a first end of which is provided in the handle and a second end of which is away from the handle; a camera module, which is arranged at the second end of the insertion part and is used to acquire images in a human body cavity; a core tube, which is rotatably arranged in the receiving cavity, is sleeved on the first end of the insertion part and is circumferentially fixed with the insertion part; and a control circuit board, which is used to control the camera module to acquire images. A side wall of the core tube is provided with a wire outlet, two ends of a connecting cable provided in the wire outlet are respectively electrically connected with the camera module and the control circuit board, and the connecting cable is provided with a cable winding and unwinding structure, which can allow the connecting cable to be wound on the core tube and can retract the connecting cable wound on the core tube. The above technical scheme can improve the problem that the internal pipeline of the existing endoscope is irregularly wound when the angle is adjusted.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to an endoscope and an endoscopic examination device. Background Technology

[0002] Endoscopes are essential instruments for minimally invasive surgery. They can not only reduce the surgical wound and give doctors a more comprehensive surgical field of vision, but also reduce the patient's hospitalization time and reduce the pain and discomfort during surgery. Therefore, they are favored by clinicians and patients in major hospitals.

[0003] To expand the field of vision, some manufacturers have begun developing angle-adjustable endoscopes. However, existing endoscopes have simple structures and many shortcomings. For example, the tubing in the endoscope can become entangled when the tube rotates, which may result in irregular tangling and damage to the outer layer of the tubing. Summary of the Invention

[0004] This application provides at least one endoscope and endoscopic examination device to improve the problem of irregular entanglement of the internal tubing of existing endoscopes during angle adjustment.

[0005] In a first aspect, embodiments of this application provide an endoscope, comprising: 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 camera module disposed at the second end of the insertion portion, the camera module being used to acquire images within a human body cavity; a core tube rotatably disposed in the receiving cavity, the core tube being sleeved on the first end of the insertion portion and circumferentially fixed to the insertion portion; and a knob rotatably disposed on the handle, the knob being used to transmit torque to the core tube, so that the core tube drives the insertion portion relative to the handle. The device features circumferential rotation; a control circuit board is disposed within the receiving cavity, used to control the camera module to acquire the image; wherein, the side wall of the core tube is provided with a cable outlet, and the two ends of the connecting cable passing through the cable outlet are electrically connected to the camera module and the control circuit board respectively; the connecting cable is provided with a cable winding and unwinding structure, which is constructed to be deformable and recoverable. When deformed, the cable winding and unwinding structure allows the connecting cable to wrap around the core tube, and when recoverable, the cable winding and unwinding structure retracts the connecting cable wrapped around the core tube.

[0006] In one alternative implementation, the cable retraction structure is specifically configured to accumulate elastic potential energy during deformation and to recover based on the elastic potential energy.

[0007] In one alternative embodiment, the cable retraction structure is made of a flexible, soft material.

[0008] In one optional embodiment, the cable retraction structure is a tubular structure, which is sleeved on the connecting cable.

[0009] In one optional embodiment, the cable retraction structure includes a deformable part and a supporting part. The deformable part is used for deformation and restoration, and the supporting part is connected and fixed to the sleeve fitted on the core tube and supports the deformable part.

[0010] In one alternative embodiment, a fixing block is provided between the insertion part and the core tube, the fixing block being configured to restrict the insertion part from rotating circumferentially relative to the core tube.

[0011] In one optional embodiment, the fixing block is provided with a first limiting part and a second limiting part, the first limiting part cooperating with a third limiting part provided on the core tube, and the second limiting part cooperating with a fourth limiting part provided on the insertion part.

[0012] In one alternative embodiment, the first limiting portion and the third limiting portion are configured to limit the rotation angle of the insertion portion when it is assembled into the core tube.

[0013] In one alternative embodiment, the second limiting portion and the fourth limiting portion are configured to limit the position of each of the fixing blocks in the insertion portion.

[0014] In one alternative embodiment, the endoscope further includes a sleeve that is fitted over the core tube and rotatably engages with the core tube, and the sleeve is connected and fixed to the handle.

[0015] In one alternative embodiment, the insertion portion includes an outer tube and an inner tube;

[0016] The core tube is provided with a first interface and a second interface, and a first cavity and a second cavity are formed between the core tube and the insertion part. The first interface and the outer tube are connected through the first cavity, and the second interface and the inner tube are connected through the second cavity.

[0017] The sleeve is provided with a first connector and a second connector. A first annular channel and a second annular channel are formed between the sleeve and the core tube. The first connector and the first interface are connected through the first annular channel, and the second connector and the second interface are connected through the second annular channel.

[0018] In one optional embodiment, the handle is provided with a water inlet connector and a water outlet connector, with a water inlet pipe connected between the water inlet connector and the first connector, and a water outlet pipe connected between the water outlet connector and the second connector.

[0019] In one optional embodiment, the water inlet connector is provided with a water inlet valve, and the water outlet connector is provided with a water outlet valve.

[0020] In one alternative embodiment, the insertion portion has an instrument channel;

[0021] A sealing component is provided at one end of the core tube away from the insertion portion. The sealing component is configured to seal the second end of the core tube and allow surgical instruments to pass through the instrument channel.

[0022] In one optional embodiment, the sealing assembly includes a duckbill valve and a rear sealing ring; wherein,

[0023] The duckbill valve is located inside the second end of the core tube. The duckbill valve is configured to open and close. When open, the duckbill valve allows the surgical instrument to pass through the instrument channel. When closed, the duckbill valve seals the second end of the core tube.

[0024] The rear sealing ring is located inside the second end of the core tube, and the rear sealing ring is configured to seal the second end of the core tube when the surgical instrument passes through the instrument channel.

[0025] In one alternative embodiment, the duckbill valve is located on the side of the rear sealing ring facing the insertion portion.

[0026] In one alternative embodiment, the endoscope further includes a detection component disposed in the receiving cavity, the detection component being used to acquire the rotation direction and rotation angle of the insertion portion.

[0027] In one alternative embodiment, the detection component includes a rotation angle sensor, which is sleeved on the insertion portion and circumferentially fixed to the insertion portion.

[0028] In one optional implementation, the detection component includes a rotation angle sensor and a transmission mechanism; wherein,

[0029] The rotation angle sensor is fixedly connected to the handle;

[0030] The transmission mechanism is disposed between the insertion part and the rotation angle sensor. The transmission mechanism is used to transmit the rotation information of the insertion part to the rotation angle sensor so that the rotation angle sensor can obtain the rotation direction and rotation angle of the insertion part.

[0031] In one optional embodiment, the transmission mechanism includes a first transmission gear and a second transmission gear; wherein,

[0032] The first transmission gear is sleeved on the insertion part;

[0033] The second transmission gear is sleeved on the rotating shaft of the rotation angle sensor, and the second transmission gear meshes with the first transmission gear.

[0034] In one alternative embodiment, the first transmission gear has a mounting hole, the diameter of which gradually increases from the first end of the insertion portion to the second end of the insertion portion.

[0035] In one alternative embodiment, the handle includes a body comprising a first housing and a second housing, the first housing and the second housing enclosing the receiving cavity.

[0036] In one alternative implementation, the first housing and the second housing are connected by a snap-fit ​​mechanism.

[0037] In one alternative embodiment, the handle further includes a first end sleeve and a second end sleeve, the first end sleeve and the second end sleeve being respectively mounted on the front end and the bottom end of the body, the first end sleeve and / or the second end sleeve being adapted to secure the first housing and the second housing when mounted on the body.

[0038] In one alternative implementation, the first end sleeve and / or the second end sleeve and the main body are connected by a snap-fit ​​mechanism.

[0039] Secondly, embodiments of this application also provide an endoscopic examination device, including the endoscope described in any of the foregoing claims.

[0040] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 A schematic diagram of the structure of the endoscope provided in the embodiment of this application is shown;

[0043] Figure 2 An exploded view of the endoscope provided in an embodiment of this application is shown;

[0044] Figure 3 A schematic diagram of the structure of the first housing provided in an embodiment of this application is shown;

[0045] Figure 4 This illustration shows an assembly diagram of the insertion part and the end provided in an embodiment of this application;

[0046] Figure 5 An exploded view of the chip assembly provided in an embodiment of this application is shown;

[0047] Figure 6 An assembly diagram of the core tube assembly provided in an embodiment of this application is shown;

[0048] Figure 7 A schematic diagram of the core tube structure provided in the embodiment of this application is shown;

[0049] Figure 8 A schematic diagram of the structure of the first end cap provided in an embodiment of this application is shown;

[0050] Figure 9 An assembly diagram of the cable retraction structure provided in the embodiment of this application is shown;

[0051] Figure 10 A schematic diagram of the structure of the fixing block provided in an embodiment of this application is shown;

[0052] Figure 11 An assembly diagram of the fixing block provided in an embodiment of this application is shown;

[0053] Figure 12 An exploded view of the sealing assembly provided in an embodiment of this application is shown;

[0054] Figure 13 An assembly diagram of the sealing assembly provided in an embodiment of this application is shown;

[0055] Figure 14 A schematic diagram of the knob provided in an embodiment of this application is shown;

[0056] Figure 15 An assembly diagram of the knob provided in an embodiment of this application is shown;

[0057] Figure 16 An exploded view of the detection component provided in an embodiment of this application is shown;

[0058] Figure 17 An assembly diagram of the detection component provided in an embodiment of this application is shown;

[0059] Figure 18 An assembly diagram of the first transmission gear provided in an embodiment of this application is shown;

[0060] Figure Labels

[0061] 10. Endoscope;

[0062] 100. Handle; 101. Grip area; 102. Limiting structure; 110. Main body; 111. First housing; 112. Second housing; 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. External connection cable; 181. Connection terminal; 190. Button area; 191. First button switch; 192. Second button switch;

[0063] 200. Insertion part; 210. Inner tube; 220. Outer tube; 221. Fourth limiting part;

[0064] 300. End cap; 310. Camera module; 311. Lighting module; 312. Lens module; 320. Water outlet; 330. Water inlet; 340. Cable winding structure; 341. Deformation section; 342. Support section;

[0065] 400. Core tube assembly; 410. Core tube; 411. Third limiting part; 412. First buckle; 413. First interface; 414. Second interface; 415. First cavity; 416. Second cavity; 417. First groove; 418. Second groove; 419. Second slot; 4101. Second groove; 4102. Fourth buckle; 4103. Outlet; 420. First end cap; 421. First connecting part; 4 211. First slot; 4212. First groove; 422. Sixth limiting part; 430. Tube sleeve; 431. First connector; 432. Second connector; 433. First annular channel; 434. Second annular channel; 435. Fixing part; 440. Outer tube sealing ring; 450. Inner tube sealing ring; 460. Bracket; 461. Guide part; 470. First annular channel sealing ring; 480. Second annular channel sealing ring;

[0066] 500, Fixing block; 501, First limiting part; 502, Second limiting part; 510, First fixing block; 520, Second fixing block;

[0067] 600, Sealing assembly; 610, Duckbill valve; 611, Flange; 620, Rear sealing ring; 630, Sealing sleeve; 631, Second connecting part; 6311, Second snap-fit; 632, Third slot; 640, Second end cap; 641, Third connecting part; 6411, Third snap-fit;

[0068] 700. Knob; 701. Fourth connecting part; 7011. Fourth slot; 702. Operating surface;

[0069] 800. Control circuit board;

[0070] 900. Detection component; 910. Rotation angle sensor; 920. First transmission gear; 921. Fifth limiting part; 922. Mounting hole; 930. Second transmission gear;

[0071] 1000, Front sealing ring. Detailed Implementation

[0072] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0073] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0074] In some examples, the endoscopic examination device includes an endoscope 10 and an image processor electrically connected to the endoscope 10. During an examination or surgery, the endoscope 10 can acquire images of the examination or surgical site, which, after being processed by the image processor, can be displayed to the examiner or doctor via a display device.

[0075] 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 located away from the handle 100. The tip 300 is disposed at the second end of the insertion portion 200 and includes a camera module 310, which can acquire images of the human cavity when the insertion portion 200 is inserted into it.

[0076] refer to Figure 1 In some examples, the handle 100 may extend at its bottom to form a grip area 101 for the user to hold. In specific implementations, the handle 100 may be pistol-shaped.

[0077] In some examples, the handle 100 may have a receiving cavity, into which the insertion portion 200 extends from the front end of the handle 100. The front end is the end of the handle 100 facing away from the operator when held by the operator. In specific implementations, the receiving cavity can be used to install cables and control devices electrically connected to the camera module 310.

[0078] refer to Figure 2 , Figure 4 , Figure 5 and Figure 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 over the inner tube 210, forming a first channel between them. This first channel can be used to inject medication into a human body cavity or to pass through a cable connecting the camera module 310. A second channel is formed inside the inner tube 210. This second channel can be used to drain liquid from the human body cavity or as an instrument channel, i.e., a channel for passing through surgical instruments, such as sampling instruments and cutting instruments.

[0079] refer to Figure 11 In some examples, the outer tube 220 can be eccentrically positioned relative to the inner tube 210. In this case, the inner diameter of the first channel can be maximized, thereby facilitating drainage and wire threading.

[0080] refer to Figure 4 In some examples, the end 300 has a first end connected to the second end of the insertion portion 200 and a second end away from the insertion portion 200, with a camera module 310 disposed at the second end of the end 300. In a specific implementation, the end 300 may extend inward from its second end to form a receiving cavity for mounting the camera module 310. Furthermore, a light-transmitting sheet may be provided at the opening of the receiving cavity to prevent the camera module 310 from being contaminated by liquids within the human body cavity.

[0081] refer to Figure 4 In some examples, the end 300 may form an outlet 320 and an inlet 330 on the outer periphery of the accommodating cavity. The outlet 320 is connected to the first channel, allowing the medication to be injected into the body cavity through the outlet 320. The inlet 330 is connected to the second channel, allowing liquid to enter the second channel through the inlet 330 when the body cavity is being drained.

[0082] refer to Figure 4In some examples, the tip 300 can be tilted or bent relative to the second channel to avoid it. In this case, the radial dimension of the second channel can be prevented from decreasing due to compression of the accommodating cavity, thus ensuring that the surgical instruments can be smoothly extended to the affected area without increasing the radial dimensions of the tip 300 and the outer tube 220.

[0083] refer to Figure 4 In some examples, the camera module 310 may include an illumination module 311 and a lens module 312. The illumination module 311 is configured to emit light externally, and the lens module 312 is configured to acquire external images. In this case, the brightness within the human body cavity can be increased, thereby ensuring sufficient image clarity and improving image quality.

[0084] refer to Figure 2 and Figure 5 In some examples, endoscope 10 may also include a core tube assembly 400.

[0085] In some examples, the core tube assembly 400 is configured to secure the insertion part 200 and to drive the insertion part 200 to rotate circumferentially relative to the handle 100.

[0086] refer to Figure 5 and Figure 6 In some examples, the core tube assembly 400 may include a core tube 410 disposed in the receiving cavity and sleeved on the first end of the insertion portion 200. 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 receiving cavity and may be circumferentially fixed to the insertion portion 200. 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 field of view of the camera module 310 can be adjusted by operating the core tube 410 to rotate the insertion portion 200 circumferentially.

[0087] refer to Figure 10 and Figure 11 In some examples, a retaining block 500 can be provided between the core tube 410 and the insertion part 200. The retaining block 500 is configured to restrict the circumferential rotation of the insertion part 200 relative to the core tube 410. In this case, the insertion part 200 and the core tube 410 can be circumferentially fixed. Furthermore, compared to using glue for circumferential fixing, this arrangement simplifies the process and improves assembly efficiency.

[0088] In some examples, the retaining block 500 can be set independently of the core tube 410 and the insertion part 200. This reduces the requirements of the core tube 410 and the insertion part 200 on the tubing material, such as the tubing thickness, thereby reducing costs.

[0089] refer to Figure 10 and Figure 11 In some examples, the fixing block 500 may be provided with a first limiting part 501 and a second limiting part 502. The first limiting part 501 may cooperate with a third limiting part 411 provided on the core tube 410 to restrict the circumferential rotation of the fixing block 500 relative to the core tube 410. The second limiting part 502 may cooperate with a fourth limiting part 221 provided on the insertion part 200 to restrict the circumferential rotation of the insertion part 200 relative to the fixing block 500. In this case, the fixing block 500 can be provided independently of the core tube 410 and the insertion part 200, thereby reducing the requirements of the core tube 410 and the insertion part 200 on the tubing material.

[0090] In some examples, one of the first limiting portion 501 and the third limiting portion 411 can be a groove, and the other can be a protrusion. For example, as Figure 10 and Figure 11 As shown, the first limiting part 501 is a groove, and the third limiting part 411 is a protrusion. When the third limiting part 411 is accommodated in the first limiting part 501, circumferential fixation between the fixing block 500 and the core tube 410 can be achieved. In this embodiment, the number of first limiting parts 501 is multiple, and the multiple first limiting parts 501 are distributed at intervals along the circumference of the insertion part 200.

[0091] In some examples, one of the second limiting portion 502 and the fourth limiting portion 221 can be a groove, and the other can be a protrusion. For example, as Figure 10 and Figure 11 As shown, the second limiting part 502 is a protrusion, and the fourth limiting part 221 is a groove. When the second limiting part 502 is accommodated in the fourth limiting part 221, circumferential fixation between the insertion part 200 and the fixing block 500 can be achieved.

[0092] In some examples, there can be multiple fixing blocks 500, which are evenly distributed circumferentially along the insertion portion 200. For example, as... Figure 10 and Figure 11 As shown, the fixing block 500 includes a first fixing block 510 and a second fixing block 520. Both the first fixing block 510 and the second fixing block 520 are semi-circular. The first fixing block 510 and the second fixing block 520 are located on both sides of the outer tube 220 and surround the outer periphery of the outer tube 220. In this case, the core tube 410 and the insertion part 200 can be evenly stressed, avoiding damage due to excessive local stress.

[0093] In some examples, the fixing block 500 can slide axially relative to the core tube 410. That is, the first limiting part 501 and the second limiting part 502 are slidably engaged. In specific implementations, such as Figure 6As shown, the fixing block 500 can be assembled onto the insertion part 200 first, and then the fixing block 500 and the insertion part 200 can be assembled together onto the core tube 410. In this case, it is convenient to assemble the fixing block 500, which helps to improve assembly efficiency.

[0094] In some examples, the first limiting portion 501 and the third limiting portion 411 can be configured to limit the rotation angle of the insertion portion 200 when it is assembled with 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; 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 specific implementations, the spacing between the multiple first limiting portions 501 can be different, or the depth of the multiple first limiting portions 501 can be different, or the width of the multiple first limiting portions 501 can be different (e.g., ...). Figure 10 (as shown). In this case, the assembly accuracy of the insertion part 200 and the core tube 410 can be guaranteed, avoiding the impact of assembly errors on the accuracy of inspection.

[0095] In some examples, the second limiting portion 502 and the fourth limiting portion 221 can be configured to restrict the position of each fixing block 500 in the insertion portion 200. That is, when the fixing block 500 is in a specific position relative to the insertion portion 200, the fixing block 500 can be assembled into the insertion portion 200; when the fixing block 500 is in a position other than the specific position relative to the insertion portion 200, the fixing block 500 cannot be assembled into the insertion portion 200. In specific implementations, the second limiting portions 502 located on different fixing blocks 500 can have different lengths, different widths, or different heights, etc. In this case, a foolproof function can be achieved, ensuring the accuracy of the assembly of the insertion portion 200.

[0096] 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.

[0097] refer to Figure 5 and Figure 8 In some examples, the core tube assembly may also include a first end cap 420, which may be disposed at a first end of the core tube 410. The first end cap 420 is configured to restrict the insertion portion 200 from exiting the core tube 410. Specifically, the first end cap 420 may engage with a retaining block 500 to limit the insertion portion 200 from exiting the core tube 410.

[0098] refer to Figure 5 and Figure 8In some examples, the first end cap 420 may have a first connecting portion 421, which is detachably connected to the core tube 410. In specific implementations, the insertion portion 200 can be inserted into the core tube 410 first, and then the first end cap 420 can be connected to the first end of the core tube 410, thereby limiting the insertion portion.

[0099] In some examples, the first connecting part 421 and the core tube 410 can be connected by a snap-fit ​​mechanism. For example, as Figure 5 , Figure 7 and Figure 8 As shown, the first connecting part 421 is provided with a first slot 4211, and the first end of the core tube 410 is provided with a first buckle 412. When the first slot 4211 and the first buckle 412 are engaged, the first end cover 420 and the core tube 410 are snapped together. In this case, it is easy to disassemble and assemble the first end cover 420, thereby improving assembly efficiency.

[0100] refer to Figure 6 In some examples, the first connecting portion 421 is sleeved on the first end of the core tube 410. The first connecting portion 421 is configured to expand and contract radially when moving axially relative to the core tube 410. When contracted, the first connecting portion 421 and the core tube 410 are engaged; when extended, the first connecting portion 421 and the core tube 410 are disengaged. Specifically, when the first end cap 420 moves axially relative to the core tube 410, the first connecting portion 421 can contract or extend radially, thereby achieving connection or disengagement.

[0101] refer to Figure 5 and Figure 8 In some examples, the first connecting portion 421 may be provided with a first groove 4212, which is provided along the axial direction of the core tube 410. In this case, the first connecting portion 421 can be easily deformed, thereby facilitating the engagement or separation of the first connecting portion 421 from the first end of the core tube 410.

[0102] In some examples, the core tube assembly 400 is also configured to form inlet and outlet water channels with the insertion portion 200, so that the first channel enables water inlet and the second channel enables water outlet.

[0103] refer to Figure 5 , Figure 6 and Figure 9 In some examples, the endoscope 10 may also include a sleeve 430 disposed in the receiving cavity and fitted onto the first connecting portion 421. In this case, it is possible to avoid the failure of the connection between the first end cap 420 and the core tube 410 due to the expansion of the first connecting portion 421 under stress.

[0104] refer to Figure 6In some examples, the sleeve 430 can also be fitted over the core tube 410. Specifically, the sleeve 430 is connected and fixed to the handle 100 and rotates in cooperation with the core tube 410. In this case, the core tube 410 can be supported, preventing the core tube 410 from moving within the receiving cavity, thereby contributing to the stability of the structure.

[0105] refer to Figure 6 In some examples, an inlet channel and an outlet channel are formed between the sleeve 430 and the insertion part 200. The inlet channel connects the outer tube 220 to the outside, and the outlet channel connects the inner tube 210 to the outside. Specifically, the core tube 410 is provided with a first interface 413 and a second interface 414. A first cavity 415 and a second cavity 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 cavity 415, and the second interface 414 and the inner tube 210 are connected through the second cavity 416. The sleeve 430 is provided with a first connector 431 and a second connector 432. A first annular channel 433 and a second annular channel 434 are formed between the sleeve 430 and the core tube 410. The first connector 431 and the first interface 413 are connected through the first annular channel 433, and the second connector 432 and the second interface 414 are connected through the second annular channel 434. In other words, the first cavity 415, the first interface 413, the first annular channel 433, and the first connector 431 are sequentially connected to form a water inlet channel, and the second cavity 416, the second interface 414, the second annular channel 434, and the second connector 432 are sequentially connected to form a water outlet channel. In this configuration, the inlet and outlet water can be separated and isolated, preventing contaminated water from re-entering the surgical operating space.

[0106] In some examples, there can be multiple first interfaces 413 and multiple second interfaces 414, all of which are distributed circumferentially along the core tube 410. In this case, the flow area can be increased, thereby improving the inlet and outlet water efficiency.

[0107] refer to Figure 5 and Figure 6 In some examples, an outer tube sealing ring 440 can 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 airtightness of the structure.

[0108] refer to Figure 6In some examples, the outer tube sealing ring 440 can be located between the first end cap 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 restricted, or the range of motion of the outer tube sealing ring 440 can be restricted, thereby preventing the outer tube sealing ring 440 from blocking the first interface 413 and affecting the drainage effect, which is beneficial to ensuring the reliability of the structure. In addition, this arrangement can also prevent the outer tube sealing ring 440 from coming out of the core tube 410, thereby avoiding the impact on the sealing performance of the structure due to the outer tube sealing ring 440 coming out of the core tube 410.

[0109] 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. An embodiment of this application shows the inner tube sealing ring 450 located in the second 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 cavity 415 and the second cavity 416.

[0110] refer to Figure 6 In some examples, the second cavity 416 may be provided with a support 460, which may be configured to restrict the axial movement of the inner tube seal 450 relative to the core tube 410. In this case, the flow performance can be prevented from being affected by the inner tube seal 450 blocking the second interface 414, which helps to ensure the reliability of the structure.

[0111] refer to Figure 5 and Figure 6 In some examples, the stent 460 has a guide portion 461 for guiding surgical instruments through the second channel. In specific implementations, the guide portion 461 may be a tapered opening located at the second end of the stent 460 facing the core tube 410. In this case, it facilitates the insertion of surgical instruments and improves the ease of operation.

[0112] refer to Figure 5 and Figure 6 In some examples, a first annular channel sealing ring 470 can be provided between the core tube 410 and the sleeve 430, with the first annular channel sealing ring 470 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.

[0113] 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 disposed 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 axially along the core tube 410 and affecting the sealing performance of the first annular channel 433.

[0114] refer to Figure 5 and Figure 6 In some examples, a second annular channel sealing ring 480 can be provided between the core tube 410 and the sleeve 430, with the second annular channel sealing ring 480 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.

[0115] 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 disposed 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 axially along the core tube 410 and affecting the sealing performance of the second annular channel 434.

[0116] 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 connecting 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 line to provide water.

[0117] 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 drain pipe to achieve drainage.

[0118] refer to Figure 1 and Figure 2 In some examples, both the inlet connector 140 and the outlet connector 160 can be located at the bottom of the handle 100. Specifically, the inlet connector 140 and the outlet connector 160 can be located at the bottom of the grip area 101. In this case, the impact of the water supply and drainage lines on the operator can be reduced, which is beneficial to improving testing efficiency.

[0119] refer to Figure 1 and Figure 2In some examples, the inlet connector 140 can be equipped with an inlet valve 141, and the outlet connector 160 can be equipped with an outlet valve 161. In this case, it is convenient to control the water supply and drainage.

[0120] refer to Figure 12 and Figure 13 In some examples, the endoscope 10 may also 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 both before and after the surgical instruments are installed. In this case, the sealing performance of the structure can be avoided due to the insertion of surgical instruments.

[0121] refer to Figure 12 and Figure 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 within the second end of the core tube 410 and can be configured to open and close. When open, the duckbill valve 610 allows surgical instruments to pass through the second channel; when closed, the duckbill valve 610 seals the second end of the core tube 410. The rear sealing ring 620 is located within the second end of the core tube 410 and can be configured to seal the second end of the core tube 410 when surgical instruments are inserted into the second channel. That is, before inserting surgical instruments, the sealing assembly 600 can seal the second end of the core tube 410 via the duckbill valve 610; after inserting surgical instruments, the sealing assembly 600 can seal the second end of the core tube 410 via the rear sealing ring 620. In this configuration, the second end of the core tube 410 can be sealed, allowing surgical instruments to pass through the second channel.

[0122] refer to Figure 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, thereby ensuring that the second end of the core tube 410 remains sealed at all times.

[0123] refer to Figure 12 and Figure 13 In some examples, the sealing assembly 600 may further include a sealing sleeve 630, which is connected to the second end of the core tube 410. Both the duckbill valve 610 and the rear sealing ring 620 are fitted within the sealing sleeve 630. That is, the duckbill valve 610 and the rear sealing ring 620 can be pre-installed in the sealing sleeve 630. This configuration improves the assembly efficiency of the duckbill valve 610 and the rear sealing ring 620.

[0124] refer to Figure 12 In some examples, the sealing sleeve 630 may have a second connection 631, which is detachably connected to the core tube 410.

[0125] In some examples, the second connecting part 631 and the core tube 410 can be connected by a snap-fit ​​mechanism. For example, as... Figure 12 As shown, the second connecting part 631 is provided with a second buckle 6311, and the second end of the core tube 410 is provided with a second slot 419. When the second slot 419 and the second buckle 6311 are engaged, the second connecting part 631 and the core tube 410 are connected by a snap-fit. In this case, it is convenient to disassemble and assemble the sealing sleeve 630, which helps to improve assembly efficiency.

[0126] refer to Figure 12 and Figure 13 In some examples, the second end of the core tube 410 is fitted onto the second connecting portion 631. The second end of the core tube 410 is configured to radially expand and contract when moving axially relative to the core tube 410. When contracted, the second connecting portion 631 and the core tube 410 are snapped together; when extended, the second connecting portion 631 and the core tube 410 are disengaged. Specifically, when the sealing sleeve 630 moves axially relative to the core tube 410, the second end of the core tube 410 can radially contract or expand, thereby achieving connection or disengagement.

[0127] refer to Figure 5 and Figure 7 In some examples, a second groove 4101 may be provided at the second end of the core tube 410, 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, thereby facilitating the engagement or disengagement of the second connecting part 631 and the second end of the core tube 410.

[0128] refer to Figure 12 and Figure 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 clamp the flange 611 when assembled to 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.

[0129] refer to Figure 12 and Figure 13In some examples, the sealing assembly 600 may further include a second end cap 640, which engages with the sealing sleeve 630. The second end cap 640 is adapted to clamp the rear sealing ring 620 when assembled with the sealing sleeve 630. Specifically, when the second end cap 640 engages with the sealing sleeve 630, the second end cap 640 and the sealing sleeve 630 can clamp the rear sealing ring 620, thereby securing the rear sealing ring 620. Furthermore, this arrangement allows the rear sealing ring 620 to be inserted from the end of the sealing sleeve 630 furthest from the insertion portion 200, thus further improving the assembly efficiency of the duckbill valve 610 and the rear sealing ring 620.

[0130] refer to Figure 12 In some examples, the second end cap 640 may have a third connection 641, which is detachably connected to the sealing sleeve 630.

[0131] In some examples, the third connection 641 and the sealing sleeve 630 can be connected by a snap-fit ​​mechanism. For example, as Figure 12 As shown, the sealing sleeve 630 is provided with a third groove 632, and the third connecting part 641 is provided with a third buckle 6411. When the third groove 632 and the third buckle 6411 are engaged, the sealing sleeve 630 and the second end cap 640 are snapped together. In this case, it is easy to disassemble and assemble the second end cap 640, which helps to improve assembly efficiency.

[0132] refer to Figure 12 and Figure 13 In some examples, the end of the sealing sleeve 630 away from the core tube 410 is fitted over the third connecting portion 641. This end of the sealing sleeve 630 away from the core tube 410 can be configured to radially expand and contract when axially moving relative to the second end cap 640. When contracted, the sealing sleeve 630 and the second end cap 640 are snapped together; when extended, the sealing sleeve 630 and the second end cap 640 are disengaged. Specifically, when the sealing sleeve 630 moves axially relative to the second end cap 640, the end of the sealing sleeve 630 away from the core tube 410 can be radially contracted or extended, thereby achieving connection or disengagement.

[0133] refer to Figure 1 , Figure 2 , Figure 14 and Figure 15 In some examples, the endoscope 10 may also include a knob 700, which is sleeved around the second end of the core tube 410 and the sealing sleeve 630. In this case, connection failure due to expansion of the second end of the core tube 410 and the sealing sleeve 630 under stress can be avoided.

[0134] refer to Figure 1In some examples, a knob 700 is rotatably mounted on the handle 100 and connected to the core tube 410. The knob 700 transmits torque to the core tube 410 to cause the core tube 410 to rotate the insertion part 200 circumferentially relative to the handle 100. In this case, the core tube 410 can be rotated circumferentially by operating the knob 700, thereby causing the insertion part 200 to rotate circumferentially to adjust the field of view of the camera module 310.

[0135] 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 may be 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 is reduced.

[0136] refer to Figure 14 and Figure 15 In some examples, the knob 700 may have a fourth connection 701, which is detachably connected to the core tube 410.

[0137] In some examples, the fourth connecting part 701 and the core tube 410 can be connected by a snap-fit ​​mechanism. For example, as... Figure 14 As shown, the fourth connecting part 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 connected by a snap-fit. In this case, it is easy to assemble and disassemble the knob 700, which helps to improve assembly efficiency.

[0138] refer to Figure 14 In some examples, the knob 700 may have an operating surface 702, which is provided with an anti-slip structure. In specific implementations, the anti-slip structure can be selected from protective stripes, a protective coating, and protective particles. In this case, the force required to operate the knob 700 can be reduced, thereby making it easier for the operator to operate the knob 700. In addition, due to the provision of the anti-slip surface, it is also possible to prevent the knob 700 from slipping.

[0139] refer to Figure 2 In some examples, the endoscope 10 may also include a control circuit board 800 disposed in the receiving cavity and electrically connected to the camera module 310. The control circuit board 800 is used to control the camera module 310 to acquire images of the human body cavity. In this case, the camera module 310 can be controlled to acquire images of the human body cavity by operating the control circuit board 800.

[0140] In some examples, the control circuit board 800 is electrically connected to a connection cable disposed on the camera module 310. (See reference) Figure 5 In specific implementation, such as Figure 5 As shown, the side wall of the core tube 410 can be provided with a cable outlet 4103, and the two ends of the connecting cable passing through the cable outlet 4103 are electrically connected to the camera module 310 and the control circuit board 800, respectively. In this case, the electrical connection between the control circuit board 800 and the camera module 310 can be realized.

[0141] refer to Figure 2 and Figure 9 In some examples, the connecting cable may be equipped with a cable retraction structure 340. This structure 340 can be configured to deform and retract. When deformed, the cable retraction structure 340 allows the connecting cable to wrap around the core tube 410. When retracted, the cable retraction structure 340 retracts the connecting cable wrapped around the core tube 410. Specifically, during the adjustment of the camera module 310's field of view, the core tube 410 rotates circumferentially relative to the sleeve 430 or the handle 100, causing the connecting cable to wrap around the outside of the core tube 410. If the connecting cable cannot be retracted when the core tube 410 returns to its original position, it may result in irregular tangling and damage. Therefore, by setting the cable retraction structure 340 to retract the connecting cable wrapped around the core tube 410, irregular tangling of the connecting cable can be avoided, thus protecting the connecting cable from damage. It should be noted that since the core tube 410 can rotate in both clockwise and counterclockwise directions, the cable winding and unwinding structure 340 of this application embodiment should not be limited to the rotation direction of the core tube 410 when it is deformed or restored.

[0142] In some examples, the cable retraction structure 340 can be deformed by shrinking, stretching, or bending. It should be noted that the cable retraction structure 340 can also be deformed in other ways, which are not specifically limited in the embodiments of this application.

[0143] In some examples, the cable winding structure 340 can be specifically configured to accumulate elastic potential energy during deformation and to recover based on that elastic potential energy. In this case, the cable winding structure 340 can achieve automatic recovery. Furthermore, compared to using a cable reel device to wind up and wind up the cable, this cable winding structure 340 has a simpler construction, requires no drive device, helps reduce the structural weight, and is easier for the operator to use.

[0144] In some examples, the cable retraction structure 340 may be made of a flexible, soft material. For example, the cable retraction structure 340 may be made of flexible, soft materials such as silicone, latex, or rubber.

[0145] refer to Figure 2 and Figure 9In some examples, the cable retraction structure 340 can be a tubular structure, which is fitted onto the connecting cable. In this case, the cable retraction structure 340 can be used to protect the connecting cable to avoid frictional damage to the cable sheath.

[0146] refer to Figure 9 In some examples, the cable retraction structure 340 can be located in the portion of the connecting cable between the outlet 4103 and the control circuit board 800. In this case, the flow diversion effect of the first channel can be avoided by placing the cable retraction structure 340 within the first channel. Furthermore, since the cable retraction structure 340 is only provided locally on the connecting cable, material usage can be reduced, saving costs.

[0147] refer to Figure 9 In some examples, the cable retraction structure 340 may include a deformable portion 341 and a support portion 342. The deformable portion 341 is freely disposed for deformation and restoration, while the support portion 342 is connected and fixed to the sleeve 430 and supports the deformable portion 341. In specific implementations, the cable retraction structure 340 can be divided into two sections: the deformable portion 341 and the support portion 342. In this case, the cable retraction structure 340 can be prevented from failing to accumulate elastic potential energy as the entire structure moves with the connecting cable, thus ensuring the effective recycling of the cable retraction structure 340.

[0148] refer to Figure 9 In some examples, the support portion 342 can be specifically 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 by a snap-fit ​​method. For example, the fixing portion 435 is a snap-fit ​​block that can snap the support portion 342 to fix the support portion 342. In this case, it is convenient to fix the support portion 342, which helps to improve assembly efficiency.

[0149] refer to Figure 1 and Figure 2 In some examples, the handle 100 may be equipped with a peripheral connection cable 180 for electrically connecting 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.

[0150] refer to Figure 1 In some examples, the peripheral connection cable 180 may be located at the bottom of the handle 100. In specific implementations, this can prevent contaminating liquids from entering the handle 100 through the gap between the peripheral connection cable 180 and the handle 100, thereby preventing contamination of internal components.

[0151] refer to Figure 1 and Figure 2 In some examples, the peripheral connection cable 180 may be equipped with a connection terminal 181, through which the peripheral connection cable 180 is electrically connected to an external device. In specific implementations, the connection terminal 181 may be a metal contact or a USB Type-C connector, etc. In this case, it is easier to electrically connect the peripheral connection cable 180 to the external device, which is safer and more convenient than the traditional direct wiring method.

[0152] 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.

[0153] refer to Figure 1 and Figure 2 In some examples, the button area 190 may be provided with a first button switch 191, which is used to operate the control circuit board 800 so that the control circuit board 800 controls the camera module 310 to acquire images.

[0154] refer to Figure 1 In some examples, the button area 190 may be located on the side of the handle 100 opposite to the insertion portion 200. In this case, contaminating liquid can be prevented from entering the interior of the handle 100 through the gap between the button area 190 and the handle 100, thereby contaminating the internal components. Furthermore, since the button area 190 is located on the side of the handle 100 opposite to the insertion portion 200, that is, on the side of the handle 100 facing the operator, this arrangement facilitates the operator's button operation.

[0155] In some examples, the control circuit board 800 can also be used to control the opening and closing of the inlet valve 141 and the outlet valve 161. Specifically, the control circuit board 800 is electrically connected to the inlet valve 141 and the outlet valve 161 respectively, and the opening and closing of the inlet valve 141 and the outlet valve 161 can be realized by operating the control circuit board 800.

[0156] refer to Figure 1 and Figure 2 In some examples, in order to facilitate the control of the opening and closing of the inlet valve 141 and the outlet valve 161, the button area 190 may also be provided with a second button switch 192. The second button 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 inlet valve 141 and the outlet valve 161.

[0157] refer to Figure 2 , Figure 16 and Figure 17In some examples, the endoscope 10 may also include a detection component 900 disposed in the receiving cavity, which is used to acquire 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, thereby enabling the orientation and angle of the image to be corrected based on the detection information for operator inspection.

[0158] In some examples, the detection component 900 may include a rotation angle sensor 910, which may be sleeved on the insertion portion 200 and circumferentially fixed to it. For example, 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 to obtain rotation information of the insertion portion 200.

[0159] refer to Figure 16 and Figure 17 In some examples, the detection component 900 may include a rotation angle sensor 910 and a transmission mechanism. The rotation angle sensor 910 is fixedly connected to the handle 100. The transmission mechanism is disposed between the insertion part 200 and the rotation angle sensor 910, and is used to transmit rotation information of the insertion part 200 to the rotation angle sensor 910, so that the rotation angle sensor 910 acquires the rotation direction and rotation angle of the insertion part 200. In this case, the detection of the rotation direction and rotation angle of the insertion part 200 can be achieved.

[0160] In some examples, the transmission mechanism can use gear transmission. Compared to other transmission methods, gear transmission has higher precision, which is beneficial for improving the accuracy of detection.

[0161] refer to Figure 16 and Figure 17 In some examples, the transmission mechanism may include a first transmission gear 920 and a second transmission gear 930. The first transmission gear 920 is sleeved on the insertion part 200 (outer tube 220), and the second transmission gear 930 is sleeved on the rotating shaft of the rotation angle sensor 910. The second transmission gear 930 and the first transmission gear 920 mesh with each other. In this case, gear transmission between the core tube 410 and the rotation angle sensor 910 can be realized.

[0162] In some examples, the transmission ratio of the first transmission gear 920 and the second transmission gear 930 can be 2:1. It is understood that the transmission ratio of the first transmission gear 920 and the second transmission gear 930 can also be other values, which will not be elaborated upon in the embodiments of this application.

[0163] refer to Figure 16 and Figure 17 In some examples, both the first transmission gear 920 and the second transmission gear 930 can be bevel gears. Compared to ordinary gears, bevel gears are quieter, operate more smoothly, and require less installation space, which helps to reduce structural size.

[0164] 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, preventing axial movement of the first transmission gear 920 relative to the insertion portion 200. Compared to fixing the first transmission gear 920 using connectors or connecting structures, this arrangement is simpler and more convenient to install, and helps to improve assembly efficiency.

[0165] In some examples, the first transmission gear 920 can be circumferentially fixed to the insertion portion 200 via the first end cap 420 or the core tube 410. For example, as... Figure 8 and Figure 16 As shown, the first transmission gear 920 is provided with a fifth limiting part 921, which cooperates with a sixth limiting part 422 provided on the first end cover 420. One of the fifth limiting part 921 and the sixth limiting part 422 is a groove, and the other is a protrusion. In this configuration, the first transmission gear 920 and the insertion part 200 can be circumferentially fixed, allowing the first transmission gear 920 to transmit rotational information of the core tube 410 and the insertion part 200 to the rotation angle sensor 910.

[0166] refer to Figure 16 and Figure 18 In some examples, the first transmission gear 920 may have a mounting hole 922 for fitting the first transmission gear 920 onto the insertion portion 200. The diameter of the mounting hole 922 gradually increases from the first end of the insertion portion 200 to the second end. That is, there may be a gap between the first transmission gear 920 and the insertion portion 200, with the gap gradually increasing from the first end to the second end, and may be flared. In specific implementations, the diameter of the mounting hole 922 may vary only at the end of the first transmission gear 920 furthest 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 when the insertion portion 200 is subjected to bending force, reducing the possibility of deformation and damage to the outer tube 220.

[0167] refer to Figure 2 and Figure 17In some examples, a front sealing ring 1000 may be provided between the insertion part 200 and the handle 100. In specific implementations, the front sealing ring 1000 can achieve a seal between the handle 100 and the insertion part 200, preventing contaminated liquid from entering the handle 100. Furthermore, the front sealing ring 1000 can also support the insertion part 200, cooperating with the first transmission gear 920 to distribute the root stress when the outer tube 220 is bent. It should be noted that in some embodiments, the insertion part 200 needs to rotate around the axis of the inner tube 210 to avoid interference between the insertion part 200 and the surgical instrument during rotation. Therefore, the hole in the front sealing ring 1000 can be eccentrically positioned to meet the rotation requirements of the insertion part 200.

[0168] refer to Figure 1 In some examples, the handle 100 may include a body 110, which includes a first housing 111 and a second housing 112, which enclose a receiving cavity.

[0169] In some examples, the first housing 111 and the second housing 112 can be connected by a snap-fit ​​mechanism. In this case, it is easy to assemble and disassemble the first housing 111 and the second housing 112, which helps to improve assembly efficiency.

[0170] refer to Figure 1 and Figure 2 In some examples, the handle 100 further includes a first end sleeve 120, which is mounted on the front end of the body 110 and adapted to secure the first housing 111 and the second housing 112 when mounted on the body 110. For example, the first end sleeve 120 may be fitted over the front end of the body 110 and partially cover the first housing 111 and the second housing 112. In this case, the first end sleeve 120 can be used to reinforce the body 110, thereby improving the structural strength of the handle 100.

[0171] In some examples, the first end sleeve 120 is connected to the main body 110 by a snap-fit ​​connection. In this case, it is easy to assemble and disassemble the first end sleeve 120, which helps to improve assembly efficiency. In addition, this arrangement also allows the second end sleeve 130 to reinforce the main body 110, thereby improving the structural strength of the handle 100.

[0172] refer to Figure 1 and Figure 2In some examples, the handle 100 further includes a second end sleeve 130, which is mounted on the bottom end of the body 110 and is adapted to secure the first housing 111 and the second housing 112 when mounted on the body 110. For example, the bottom of the grip area 101 is provided with an opening communicating with the receiving cavity, and the second end sleeve 130 can be mounted at this opening and connected to the first housing 111 and the second housing 112 respectively.

[0173] In some examples, the second end sleeve 130 is connected to the main body 110 by a snap-fit ​​connection. In this case, it is easier to assemble and disassemble the first end sleeve 120, which helps to improve assembly efficiency. In addition, this arrangement can also use the second end sleeve 130 to reinforce the main body 110, thereby improving the structural strength of the handle 100.

[0174] One or more embodiments in 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 in this specification should be included within the protection scope of this application.

[0175] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An endoscope, characterized in that, The endoscope includes: The handle has a receiving cavity; The insertion portion has a first end that passes through the handle and a second end that is away from the handle; A camera module is disposed at the second end of the insertion part, and the camera module is used to acquire images inside the human body cavity; A core tube is rotatably disposed in the receiving cavity, and the core tube is sleeved on the first end of the insertion part and circumferentially fixed to the insertion part; A sleeve is fitted onto the core tube and rotates with it; the sleeve is connected and fixed to the handle. A knob is rotatably disposed on the handle, the knob being used to transmit torque to the core tube so that the core tube drives the insertion part to rotate circumferentially relative to the handle; A control circuit board is disposed in the receiving cavity, and the control circuit board is used to control the camera module to acquire the image; The core tube has a cable outlet on its side wall, and the two ends of the connecting cable passing through the cable outlet are electrically connected to the camera module and the control circuit board, respectively. The connecting cable is provided with a cable winding structure, which is constructed to be deformable and recoverable. When deformed, the cable winding structure allows the connecting cable to wrap around the core tube. When recoverable, the cable winding structure retracts the connecting cable wrapped around the core tube to avoid irregular winding of the connecting cable. The cable take-up and take-down structure is specifically designed to accumulate elastic potential energy during deformation and to recover based on the elastic potential energy. The cable retraction structure includes a deformable part and a supporting part. The deformable part is used for deformation and restoration, and the supporting part is connected and fixed to the sleeve fitted on the core tube and supports the deformable part.

2. The endoscope according to claim 1, characterized in that, The cable retraction structure is made of a flexible, soft material.

3. The endoscope according to claim 1, characterized in that, The cable retraction structure is a tubular structure, and the cable retraction structure is sleeved on the connecting cable.

4. The endoscope according to claim 1, characterized in that, A fixing block is provided between the insertion part and the core tube, and the fixing block is configured to restrict the circumferential rotation of the insertion part relative to the core tube.

5. The endoscope according to claim 4, characterized in that, The fixing block is provided with a first limiting part and a second limiting part. The first limiting part cooperates with a third limiting part provided on the core tube, and the second limiting part cooperates with a fourth limiting part provided on the insertion part.

6. The endoscope according to claim 5, characterized in that, The first limiting portion and the third limiting portion are configured to limit the rotation angle of the insertion portion when it is assembled into the core tube.

7. The endoscope according to claim 6, characterized in that, The second limiting part and the fourth limiting part are configured to limit the position of each of the fixing blocks in the insertion part.

8. The endoscope according to claim 1, characterized in that, The insertion part includes an outer tube and an inner tube; The core tube is provided with a first interface and a second interface, and a first cavity and a second cavity are formed between the core tube and the insertion part. The first interface and the outer tube are connected through the first cavity, and the second interface and the inner tube are connected through the second cavity. The sleeve is provided with a first connector and a second connector. A first annular channel and a second annular channel are formed between the sleeve and the core tube. The first connector and the first interface are connected through the first annular channel, and the second connector and the second interface are connected through the second annular channel.

9. The endoscope according to claim 8, characterized in that, The handle is provided with a water inlet connector and a water outlet connector. A water inlet pipe is connected between the water inlet connector and the first connector, and a water outlet pipe is connected between the water outlet connector and the second connector.

10. The endoscope according to claim 1, characterized in that, The insertion section has an instrument channel; A sealing component is provided at one end of the core tube away from the insertion portion. The sealing component is configured to seal the second end of the core tube and allow surgical instruments to pass through the instrument channel.

11. The endoscope according to claim 10, characterized in that, The sealing assembly includes a duckbill valve and a rear sealing ring; wherein... The duckbill valve is located inside the second end of the core tube. The duckbill valve is configured to open and close. When open, the duckbill valve allows the surgical instrument to pass through the instrument channel. 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 the rear sealing ring is configured to seal the second end of the core tube when the surgical instrument passes through the instrument channel.

12. The endoscope according to claim 11, characterized in that, The duckbill valve is located on the side of the rear sealing ring facing the insertion part.

13. The endoscope according to claim 1, characterized in that, The endoscope also includes a detection component disposed in the receiving cavity, the detection component being used to acquire the rotation direction and rotation angle of the insertion portion.

14. The endoscope according to claim 13, characterized in that, The detection component includes a rotation angle sensor, which is sleeved on the insertion part and circumferentially fixed to the insertion part.

15. The endoscope according to claim 13, characterized in that, The detection component includes a rotation angle sensor and a transmission mechanism; wherein... The rotation angle sensor is fixedly connected to the handle; The transmission mechanism is disposed between the insertion part and the rotation angle sensor. The transmission mechanism is used to transmit the rotation information of the insertion part to the rotation angle sensor so that the rotation angle sensor can obtain the rotation direction and rotation angle of the insertion part.

16. The endoscope according to claim 15, characterized in that, The transmission mechanism includes a first transmission gear and a second transmission gear; wherein... The first transmission gear is sleeved on the insertion part; The second transmission gear is sleeved on the rotating shaft of the rotation angle sensor, and the second transmission gear meshes with the first transmission gear.

17. The endoscope according to claim 16, characterized in that, The first transmission gear has a mounting hole, the diameter of which gradually increases from the first end of the insertion part to the second end of the insertion part.

18. The endoscope according to claim 1, characterized in that, The handle includes a body, which includes a first housing and a second housing, the first housing and the second housing enclosing the receiving cavity.

19. The endoscope according to claim 18, characterized in that, The first housing and the second housing are connected by a snap-fit ​​mechanism.

20. The endoscope according to claim 18, characterized in that, The handle further includes a first end sleeve and a second end sleeve, which are respectively installed at the front end and the bottom end of the main body. The first end sleeve and / or the second end sleeve are adapted to secure the first housing and the second housing when installed on the main body.

21. The endoscope according to claim 20, characterized in that, The first end sleeve and / or the second end sleeve and the main body are connected by a snap-fit ​​method.

22. An endoscopic examination device, characterized in that, Including the endoscope as described in any one of claims 1-21.

Images