CN222398241U - Endoscope and endoscopic apparatus - Google Patents

Abstract

The present application provides an endoscope and an endoscopic inspection device. The endoscope includes: a handle having a housing cavity; an insertion portion having a first end inserted in the handle and a second end away from the handle; a core tube rotatably arranged in the housing 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 including a duckbill valve and a rear sealing ring; the duckbill valve is constructed to be able to open and close, when opened, the duckbill valve allows surgical instruments to penetrate the instrument channel, when closed, the duckbill valve closes 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. The above technical solution can improve the problem that the sealing assembly of the existing endoscope can only seal the instrument channel when no surgical instrument is inserted.

Description

Endoscope and endoscopic apparatus

Technical Field

The application relates to the technical field of medical equipment, in particular to an endoscope and endoscopic equipment.

Background

The endoscope is a necessary instrument for minimally invasive surgery, which not only can reduce the surgical wound surface, lead doctors to have more comprehensive surgical field, reduce the hospitalization time of patients, but also can reduce the pain and discomfort of the patients during surgery, thus being favored by clinicians and patients in various hospitals.

In order to expand the field of view, some manufacturers have begun to develop angularly adjustable endoscopes. However, the existing endoscope has a simple structure and various disadvantages. For example, the instrument channel of an endoscope is typically configured with a seal assembly to effect a seal against the instrument channel. However, the existing sealing structure can only seal the instrument channel when the surgical instrument is not worn, and the use effect is not ideal.

Disclosure of utility model

Embodiments of the present application provide at least an endoscope and an endoscopic apparatus, so as to solve the problem that a sealing assembly of an existing endoscope can only seal an instrument channel when a surgical instrument is not worn.

In a first aspect, an embodiment of the application provides an endoscope comprising a handle having a receiving cavity, an insertion portion having a first end disposed therethrough and a second end distal from the handle, a core tube rotatably disposed within the receiving cavity, the core tube being disposed over the first end of the insertion portion and circumferentially secured thereto, wherein the insertion portion has an instrument channel, the core tube having a first end disposed over the insertion portion and a second end distal from the insertion portion, the second end of the core tube being provided with a sealing assembly comprising a duckbill valve and a rear seal ring, the duckbill valve being disposed within the second end of the core tube, the duckbill valve being configured to open and close when open, the duckbill valve allowing the surgical instrument to pass through the instrument channel, the rear seal ring being disposed within the second end of the core tube, the rear seal ring being configured to seal a gap between the surgical instrument and the instrument channel when closed.

In an alternative embodiment, the duckbill valve is located on the side of the rear seal ring facing the insert.

In an alternative embodiment, the seal assembly further comprises a seal sleeve, the seal sleeve is connected with the second end of the core tube, and the duckbill valve and the rear seal ring are sleeved in the seal sleeve.

In an alternative embodiment, the seal sleeve is snap-fit connected to the second end of the core tube.

In an alternative embodiment, the duckbill valve has a flange on the side facing the insert;

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

In an alternative embodiment, the seal assembly further comprises a second end cap, the second end cap being coupled to the seal sleeve, the second end cap being adapted to compress the rear seal ring when assembled to the seal sleeve.

In an alternative embodiment, the second end cap is snap-fit with the seal sleeve.

In an alternative embodiment, the endoscope further comprises a tube sleeve, wherein the tube sleeve is sleeved on the core tube and is in running fit with the core tube, and the tube sleeve is fixedly connected with the handle.

In an alternative embodiment, the insert comprises an outer tube and an inner tube;

The core tube is provided with a first interface and a second interface, a first pipe cavity and a second pipe cavity are formed between the core tube and the insertion part, the first interface is communicated with the outer pipe through the first pipe cavity, and the second interface is communicated with the inner pipe through the second pipe cavity;

The pipe sleeve is provided with a first connector and a second connector, a first annular channel and a second annular channel are formed between the pipe sleeve and the core pipe, the first connector is communicated with the first connector through the first annular channel, and the second connector is communicated with the second connector through the second annular channel.

In an alternative embodiment, an outer tube sealing ring is arranged between the core tube and the outer tube.

In an alternative embodiment, an inner tube sealing ring is arranged between the core tube and the inner tube.

In an alternative embodiment, a first annular channel seal ring and a second annular channel seal ring are arranged between the core tube and the pipe sleeve, wherein,

The first annular channel sealing rings are positioned on two sides of the first annular channel;

the second annular channel sealing rings are positioned on two sides of the second annular channel.

In an alternative embodiment, the second lumen is provided with a stent configured to guide the surgical instrument.

In an alternative 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.

In an alternative embodiment, the water inlet joint is provided with a water inlet valve and the water outlet joint is provided with a water outlet valve.

In an alternative embodiment, the endoscope further comprises a control circuit board, the control circuit board is arranged in the accommodating cavity, the control circuit board is electrically connected with the water inlet valve and the water outlet valve, and the control circuit board is used for controlling the water inlet valve and the water outlet valve to open and close.

In an alternative embodiment, the handle is provided with a second key switch for operating the control circuit board.

In an alternative embodiment, the second push-button switch is located on a side of the handle facing away from the insertion portion.

In a second aspect, embodiments of the present application also provide an endoscopic apparatus comprising an endoscope as described in any of the preceding claims.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are necessary for the embodiments to be used are briefly described below, the drawings being incorporated in and forming a part of the description, these drawings showing embodiments according to the present application and together with the description serve to illustrate the technical solutions of the present application. It is to be understood that the following drawings illustrate only certain embodiments of the application and are therefore not to be considered limiting of its scope, for the person of ordinary skill in the art may admit to other equally relevant drawings without inventive effort.

FIG. 1 is a schematic view showing the structure of an endoscope according to an embodiment of the present application;

FIG. 2 shows an exploded view of an endoscope provided by an embodiment of the present application;

FIG. 3 is a schematic view of a first housing according to an embodiment of the present application;

FIG. 4 illustrates an assembled schematic view of an insert and tip provided by an embodiment of the present application;

FIG. 5 shows an exploded view of a core tube assembly provided by an embodiment of the present application;

FIG. 6 shows a schematic view of the assembly of the core tube assembly provided by an embodiment of the present application;

FIG. 7 is a schematic view showing the structure of a core tube according to an embodiment of the present application;

FIG. 8 is a schematic view of a first end cap according to an embodiment of the present application;

Fig. 9 is an assembly schematic diagram of a cable winding and unwinding structure according to an embodiment of the present application;

FIG. 10 is a schematic view showing the structure of a fixing block according to an embodiment of the present application;

FIG. 11 is a schematic view showing the assembly of a fixing block according to an embodiment of the present application;

FIG. 12 illustrates an exploded view of a seal assembly provided by an embodiment of the present application;

FIG. 13 illustrates an assembled schematic view of a seal assembly provided by an embodiment of the present application;

FIG. 14 is a schematic view showing the structure of a knob according to an embodiment of the present application;

FIG. 15 shows an assembled schematic view of a knob provided by an embodiment of the application;

FIG. 16 illustrates an exploded view of a detection assembly provided by an embodiment of the present application;

FIG. 17 shows an assembled schematic view of a detection assembly provided by an embodiment of the present application;

FIG. 18 shows an assembled schematic view of a first drive gear provided by an embodiment of the present application;

reference numerals

10. An endoscope;

100. The handle, the holding area, the 102, the limiting structure, the 110, the main body, the 111, the first shell, the 112, the second shell, the 120, the first end sleeve, the 130, the second end sleeve, the 140, the water inlet connector, the 141, the water inlet valve, the 150, the water inlet pipe, the 160, the water outlet connector, the 161, the water outlet valve, the 170, the water outlet pipe, the 180, the peripheral connecting wire, the 181, the connecting terminal, the 190, the key area, the 191, the first key switch, the 192 and the second key switch;

200. The device comprises an insertion part, an inner pipe, 220, an outer pipe, 221 and a fourth limiting part;

300. The device comprises an end socket, 310, a camera module, 311, an illumination module, 312, a lens module, 320, a water outlet, 330, a water inlet, 340, a cable winding and unwinding structure, 341, a deformation part, 342 and a supporting part;

400. Core tube assembly 410, core tube, 411, third limit portion, 412, first buckle, 413, first interface, 414, second interface, 415, first lumen, 416, second lumen, 417, first groove, 418, second groove, 419, second slot, 4101 second slot, 4102, fourth buckle, 4103, outlet, 420, first end cap, 421, first connection portion, 4211, first slot, 4212, first slot, 422, sixth limit portion, 430, sleeve, 431, first joint, 432, second joint, 433, first annular channel, 434, second annular channel, 435, securing portion, 440, outer tube seal, 450, inner tube seal, 460, bracket, 461, guide portion, 470, first annular channel seal, 480, second annular channel seal;

500. a fixed block; 501, a first limiting part, 502, a second limiting part, 510, a first fixing block, 520, a second fixing block;

600. Sealing assembly, 610, duckbill valve, 611, flange, 620, rear seal ring, 630, seal sleeve, 631, second connection, 6311, second buckle, 632, third slot, 640, second end cap, 641, third connection, 6411, third buckle;

700. Knob 701, fourth connecting part, 7011, fourth clamping groove 702, operation surface;

800. A control circuit board;

900. The device comprises a detection assembly, a rotation angle sensor, a first transmission gear, a 921 fifth limiting part, a 922, a mounting hole, a 930 and a second transmission gear, wherein the detection assembly comprises a rotation angle sensor, a first transmission gear and a second transmission gear;

1000. and a front sealing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings.

It should be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application pertains. The use of the terms "first," "second," and the like in one or more embodiments of the present description does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In some examples, the endoscopic device includes an endoscope 10 and an image processor electrically connected to the endoscope 10. During an examination or operation, the endoscope 10 may acquire images of the examination or operation site, which may be processed by an image processor and presented to an inspector or physician via a display device.

Referring to fig. 1, in some examples, an endoscope 10 can include a handle 100, an insertion portion 200, and a tip 300. Wherein the insertion portion 200 has a first end that interfaces with the handle 100 and a second end that is remote 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, where the camera module 310 can obtain an image of the human body cavity when the insertion portion 200 is inserted into the human body cavity.

Referring to fig. 1, in some examples, a handle 100 may extend at its bottom to form a gripping area 101 for a user to hold. In particular implementations, the handle 100 may be pistol-shaped.

In some examples, the handle 100 may have a receiving cavity in which the insertion portion 200 is penetrated from the front end of the handle 100. Wherein the front end is the end of the handle 100 facing away from the operator when held by the operator. In a specific implementation, the receiving cavity may be used for mounting cables, control devices electrically connected to the camera module 310, and the like.

Referring to fig. 2, 4, 5, and 11, in some examples, the insert 200 may include an inner tube 210 and an outer tube 220. Wherein, 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, and the first channel can be used for injecting liquid medicine into a human body cavity and also can be used for threading a cable connected with the camera module 310. The inner tube 210 forms a second channel therein, which can be used for draining the liquid in the human body cavity, and can also be used as an instrument channel, i.e. a channel through which a surgical instrument such as a sampling instrument, a cutting instrument, etc. is inserted.

Referring to fig. 11, in some examples, the outer tube 220 may be disposed eccentric to the inner tube 210. In this case, the inner diameter of the first passage can be increased as much as possible, thereby facilitating drainage and threading.

Referring to fig. 4, in some examples, tip 300 has a first end that interfaces with a second end of insertion portion 200 and a second end that is remote from insertion portion 200, the second end of tip 300 being provided with camera module 310. In a specific implementation, the tip 300 may extend from the second end thereof to the inside thereof to form a receiving cavity for mounting the camera module 310. In addition, the cavity mouth of the accommodating cavity can be provided with a light-transmitting sheet, so that the camera module 310 is prevented from being polluted by liquid in the human body cavity.

Referring to fig. 4, in some examples, tip 300 may form water outlet 320 and water inlet 330 at the outer perimeter of the receiving cavity. Wherein, the water outlet 320 is communicated with 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 communicates with the second passage, and when the liquid in the cavity of the human body is discharged, the liquid may enter the second passage through the water inlet 330.

Referring to fig. 4, in some examples, tip 300 may be angled or curved with respect to the second channel to avoid the second channel. In this case, the second channel is prevented from being reduced in radial dimension due to being pressed by the receiving chamber, so that the surgical instrument can be ensured to be smoothly extended to the affected part without increasing the radial dimensions of the tip 300 and the outer tube 220.

Referring to fig. 4, in some examples, the camera module 310 may include an illumination module 311 and a lens module 312. Wherein the illumination module 311 is configured to be capable of emitting light to the outside, and the lens module 312 is configured to be capable of acquiring an external image. In this case, the brightness in the human body cavity can be improved, thereby ensuring that the image has sufficient definition, which is advantageous for improving the image quality.

Referring to fig. 2 and 5, in some examples, the endoscope 10 may further include a core tube assembly 400.

In some examples, the core tube assembly 400 is configured to secure the insert 200 and to rotate the insert 200 circumferentially relative to the handle 100.

Referring to fig. 5 and 6, in some examples, the core tube assembly 400 may include a core tube 410 disposed within the receiving cavity and sleeved at a first end of the insertion portion 200, and the core tube 410 may be configured to enable circumferential rotation of the insertion portion 200 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, so that the insertion portion 200 can be circumferentially rotated relative to the handle 100 when the core tube 410 is circumferentially rotated relative to the handle 100. In this case, the field of view of the imaging module 310 can be adjusted by rotating the insertion portion 200 in the circumferential direction by operating the core tube 410.

Referring to fig. 10 and 11, in some examples, a securing block 500 may be disposed between the core tube 410 and the insertion portion 200, the securing block 500 being configured to limit circumferential rotation of the insertion portion 200 relative to the core tube 410. In this case, the insertion portion 200 and the core tube 410 can be circumferentially fixed. In addition, compared with a mode of adopting glue to bond for circumferential fixation, the arrangement can simplify the process and improve the assembly efficiency.

In some examples, the securing block 500 may be provided independently of the core tube 410 and the insert 200. This reduces the requirements of the core tube 410 and the insert 200 for tubing, such as tubing thickness, thereby reducing costs.

Referring to fig. 10 and 11, in some examples, the fixing block 500 may be provided with a first stopper 501 and a second stopper 502. The first limiting portion 501 may cooperate with the third limiting portion 411 disposed on the core tube 410 to limit the fixed block 500 from rotating circumferentially 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 insertion portion 200 from rotating circumferentially relative to the fixed block 500. In this case, the fixing block 500 can be provided independently with respect to the core tube 410 and the insertion portion 200, thereby facilitating reduction in the requirements of the core tube 410 and the insertion portion 200 for the pipe.

In some examples, one of the first and third limiting parts 501 and 411 may be a groove and the other may be a protrusion. For example, as shown in fig. 10 and 11, the first limiting portion 501 is a groove, and the third limiting portion 411 is a protrusion. When the third limiting part 411 is received in the first limiting part 501, 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 plural, and the plural first limiting portions 501 are distributed at intervals along the circumferential direction of the insertion portion 200.

In some examples, one of the second and fourth stop portions 502, 221 may be a groove and the other may be a protrusion. For example, as shown in fig. 10 and 11, the second limiting portion 502 is a protrusion, and the fourth limiting portion 221 is a groove. When the second stopper 502 is received in the fourth stopper 221, circumferential fixation between the insertion portion 200 and the fixing block 500 can be achieved.

In some examples, the number of the fixing blocks 500 may be plural, and the plurality of fixing blocks 500 are uniformly distributed along the circumferential direction of the insertion portion 200. For example, as shown in fig. 10 and 11, the fixing block 500 includes a first fixing block 510 and a second fixing block 520, the first fixing block 510 and the second fixing block 520 are both semicircular, and the first fixing block 510 and the second fixing block 520 are respectively located at both sides of the outer tube 220 and are disposed around the outer circumference of the outer tube 220. In this case, the core tube 410 and the insertion portion 200 can be uniformly forced, and damage due to local excessive force can be avoided.

In some examples, the fixed block 500 is capable of sliding axially relative to the core tube 410. That is, the first limiting portion 501 and the second limiting portion 502 are slidably engaged. In practice, as shown in fig. 6, the fixing block 500 may be first assembled to the insertion portion 200, and then the fixing block 500 and the insertion portion 200 may be assembled together to the core tube 410. In this case, the fixing block 500 can be easily assembled, which is advantageous in improving the assembly efficiency.

In some examples, the first and third limiting parts 501 and 411 may be configured to be able to limit a rotation angle of the insertion part 200 when assembled to the core tube 410. That is, when the insertion portion 200 is at a specific rotation angle with respect 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 with respect to the core tube 410, the insertion portion 200 cannot be inserted into the core tube 410. In a specific implementation, the intervals of the plurality of first limiting portions 501 may be different, the depths of the plurality of first limiting portions 501 may be different, the widths of the plurality of first limiting portions 501 may be different (as shown in fig. 10), or the like. In this case, the fitting accuracy of the insertion portion 200 and the core tube 410 can be ensured, and the accuracy of inspection is prevented from being affected by the fitting error.

In some examples, the second and fourth stopper portions 502 and 221 may be configured to be able to limit the position of each fixing block 500 at the insertion portion 200. That is, when the fixing block 500 is at a specific position with respect to the insertion portion 200, the fixing block 500 can be mounted to the insertion portion 200, and when the fixing block 500 is at a position other than the specific position with respect to the insertion portion 200, the fixing block 500 cannot be mounted to the insertion portion 200. In a specific implementation, the second limiting parts 502 located at different fixing blocks 500 may have different lengths, or the second limiting parts 502 located at different fixing blocks 500 may have different widths, or the second limiting parts 502 located at different fixing blocks 500 may have different heights, etc. In this case, a fool-proof function can be realized, ensuring the accuracy of the assembly of the insertion portion 200.

In some examples, the core tube 410 may have a first end that fits over the insert 200 and a second end that is remote from the insert 200.

Referring to fig. 5 and 8, in some examples, the core tube assembly may further include a first end cap 420, the first end cap 420 may be disposed at a first end of the core tube 410, the first end cap 420 configured to limit the insertion portion 200 from exiting the core tube 410. Specifically, the first end cap 420 may be in a positive fit with the fixed block 500 to limit the insertion portion 200 from exiting the core tube 410.

Referring to fig. 5 and 8, in some examples, the first end cap 420 may have a first connection portion 421, the first connection portion 421 being detachably connected with 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 is connected to the first end of the core tube 410, so as to implement the limitation of the insertion portion.

In some examples, the first connection 421 and the core tube 410 may be connected in a snap-fit manner. For example, as shown in fig. 5, 7 and 8, the first connection portion 421 is provided with a first locking groove 4211, and the first end of the core tube 410 is provided with a first locking buckle 412. When the first catch 4211 is engaged with the first catch 412, the first end cap 420 and the core tube 410 achieve a snap-fit connection. In this case, the first end cap 420 can be easily disassembled, thereby contributing to an improvement in assembly efficiency.

Referring to fig. 6, in some examples, a first connection portion 421 is sleeved on a first end of the core tube 410, the first connection portion 421 is configured to be radially expandable and contractible when moving axially relative to the core tube 410, the first connection portion 421 and the core tube 410 are snap-coupled when contracted, and the first connection portion 421 and the core tube 410 are uncoupled when expanded. Specifically, the first connection 421 may be radially contracted or expanded when the first end cap 420 is axially moved with respect to the core tube 410, thereby achieving connection or disconnection.

Referring to fig. 5 and 8, in some examples, the first connection portion 421 may be provided with a first cut groove 4212, the first cut groove 4212 being provided along an axial direction of the core tube 410. In this case, the first connection portion 421 can be easily deformed, thereby facilitating the engagement or disengagement of the first connection portion 421 with the first end of the core tube 410.

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

Referring to fig. 5, 6 and 9, in some examples, endoscope 10 may further include a sleeve 430, sleeve 430 being disposed in the receiving cavity, sleeve 430 being disposed over first connection 421. In this case, the connection failure of the first end cap 420 and the core tube 410 due to the forced expansion of the first connection portion 421 can be avoided.

Referring to fig. 6, in some examples, sleeve 430 may also be sleeved outside core tube 410. Specifically, sleeve 430 is fixedly connected to handle 100 and is in rotational engagement with core tube 410. In this case, the support of the core tube 410 can be achieved, preventing the core tube 410 from moving in the accommodating chamber, thereby facilitating the stability of the structure.

Referring to fig. 6, in some examples, a water inlet passage and a water outlet passage are formed between the socket 430 and the insertion portion 200. Wherein, the water inlet passage is used for communicating the outer tube 220 with the outside, and the water outlet passage is used for communicating the inner tube 210 with the outside. Specifically, the core tube 410 is provided with a first interface 413 and a second interface 414, a first lumen 415 and a second lumen 416 are formed between the core tube 410 and the insertion portion 200, the first interface 413 and the outer tube 220 are communicated through the first lumen 415, the second interface 414 and the inner tube 210 are communicated through the second lumen 416, the sleeve 430 is provided with a first joint 431 and a second joint 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 joint 431 and the first interface 413 are communicated through the first annular channel 433, and the second joint 432 and the second interface 414 are communicated through the second annular channel 434. That is, the first lumen 415, the first port 413, the first annular channel 433, and the first joint 431 are sequentially communicated to form a water inlet channel, and the second lumen 416, the second port 414, the second annular channel 434, and the second joint 432 are sequentially communicated to form a water outlet channel. In this case, the diversion isolation of the inflow water and the outflow water can be realized, and the discharged polluted water is prevented from reentering the operation space.

In some examples, the number of first interfaces 413 and second interfaces 414 may be multiple, with the multiple first interfaces 413 and multiple second interfaces 414 each being spaced apart along the circumference of the core tube 410. In this case, the flow-through area can be increased, thereby contributing to an improvement in water inlet and outlet efficiency.

Referring to fig. 5 and 6, in some examples, an outer tube seal 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 securing the sealability of the structure.

Referring to fig. 6, in some examples, an outer tube seal 440 may be located between the first end cap 420 and the fixed 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 movement range of the outer tube sealing ring 440 can be limited, so that the drainage effect is prevented from being affected due to the blocking of the first interface 413 by the outer tube sealing ring 440, which is beneficial to ensuring the reliability of the structure. In addition, the outer tube seal ring 440 can be prevented from coming out of the core tube 410, and the sealing performance of the structure can be prevented from being affected by the outer tube seal ring 440 coming out of the core tube 410.

Referring to fig. 5 and 6, in some examples, an inner tube seal 450 may be provided between the core tube 410 and the inner tube 210. The embodiment of the present application shows the inner tube seal 450 positioned in the second lumen 416. In this case, the gap between the inner tube 210 and the core tube 410 can be sealed to secure the sealability between the first lumen 415 and the second lumen 416.

Referring to fig. 6, in some examples, the second lumen 416 may be provided with a bracket 460, and the bracket 460 may be configured to limit axial movement of the inner tube seal 450 relative to the core tube 410. In this case, the inner tube seal 450 can be prevented from blocking the second port 414 to affect the overcurrent performance, which is advantageous for ensuring the reliability of the structure.

Referring to fig. 5 and 6, in some examples, the bracket 460 has a guide 461, the guide 461 being for guiding a surgical instrument through the second channel. In particular implementations, the guide 461 may be a tapered opening provided at the second end of the bracket 460 facing the core tube 410. In this case, the surgical instrument can be easily put on, which is advantageous in improving the convenience of operation.

Referring to fig. 5 and 6, in some examples, a first annular channel seal 470 may be disposed between the core tube 410 and the sleeve 430, the first annular channel seal 470 being located on either side of the first annular channel 433. In this case, the sealing performance of the first annular channel 433 can be ensured.

Referring to fig. 5, 6 and 7, in some examples, the outer wall of the core tube 410 may be provided with a first groove 417 and a first annular channel seal 470 is provided in the first groove 417. In this case, the first annular channel seal 470 can be limited, so that the first annular channel seal 470 is prevented from moving along the axial direction of the core tube 410, and the sealing performance of the first annular channel 433 is prevented from being affected.

Referring to fig. 5 and 6, in some examples, a second annular channel seal 480 may be disposed between the core tube 410 and the sleeve 430, the second annular channel seal 480 being located on either side of the second annular channel 434. In this case, the sealing performance of the second annular passage 434 can be ensured.

Referring to fig. 5, 6 and 7, in some examples, the outer wall of the core tube 410 may be provided with a second groove 418, and a second annular channel seal 480 is provided in the second groove 418. In this case, the second annular channel seal 480 can be limited, so that the second annular channel seal 480 is prevented from moving in the axial direction of the core tube 410, and the sealing performance of the second annular channel 434 is prevented from being affected.

Referring to fig. 1 and 2, in some examples, the handle 100 may be provided with a water inlet fitting 140 and a water inlet tube 150 connected between the water inlet fitting 140 and the first fitting 431. In this case, the first joint 431 can be communicated with an external water supply line to supply water.

Referring to fig. 1 and 2, in some examples, the handle 100 may be provided with a water outlet fitting 160 and a water outlet tube 170 connected between the water outlet fitting 160 and a second fitting 432. In this case, the second joint 432 and the external drain line can be communicated to achieve drainage.

Referring to fig. 1 and 2, in some examples, both the water inlet fitting 140 and the water outlet fitting 160 may be located at the bottom of the handle 100. Specifically, the water inlet connection 140 and the water outlet connection 160 may be located at the bottom of the grip region 101. In this case, the influence of the water supply and drainage pipeline on the operator can be reduced, which is advantageous for improving the detection efficiency.

Referring to fig. 1 and 2, in some examples, the water inlet fitting 140 may be provided with a water inlet valve 141 and the water outlet fitting 160 may be provided with a water outlet valve 161. In this case, the water supply and drainage can be controlled easily.

Referring to fig. 12 and 13, in some examples, the endoscope 10 can further include a seal assembly 600, the seal assembly 600 can be disposed at the second end of the core tube 410, the seal assembly 600 configured to seal the second end of the core tube 410 and allow a surgical instrument to pass through the second channel. Specifically, the seal assembly 600 is capable of effecting a seal against the second end of the core tube 410 both before and after installation of the surgical instrument. In this case, the influence of the wearing of the surgical instrument on the sealing performance of the structure can be avoided.

Referring to fig. 12 and 13, in some examples, the seal assembly 600 may include a duckbill valve 610 and a rear seal ring 620. Where the duckbill valve 610 is located within the second end of the core tube 410, the duckbill valve 610 may be configured to open and close, when open, the duckbill valve 610 allows surgical instruments to pass into the second channel, and when closed, the duckbill valve 610 closes the second end of the core tube 410. A rear seal ring 620 is positioned within the second end of the core tube 410, and the rear seal ring 620 may be configured to seal the second end of the core tube 410 when a surgical instrument is threaded into the second passageway. That is, the seal assembly 600 may effect sealing of the second end of the core tube 410 via the duckbill valve 610 prior to threading the surgical instrument, and the seal assembly 600 may effect sealing of the second end of the core tube 410 via the rear seal ring 620 after threading the surgical instrument. In this case, sealing of the second end of the core tube 410 can be achieved and allowing surgical instruments to pass through the second passageway.

Referring to fig. 13, in some examples, duckbill valve 610 is located on the side of rear seal ring 620 facing insert 200. This arrangement allows the surgical instrument to form a seal with the rear seal 620 prior to passing through the duckbill valve 610, thereby allowing the second end of the core tube 410 to remain sealed at all times.

Referring to fig. 12 and 13, in some examples, the seal assembly 600 may further include a seal sleeve 630, the seal sleeve 630 interfacing with the second end of the core tube 410, the duckbill valve 610 and the rear seal ring 620 each being nested within the seal sleeve 630. That is, duckbill valve 610 and rear seal ring 620 may be preloaded with seal sleeve 630. By doing so, the assembling efficiency of the duckbill valve 610 and the rear gasket 620 can be improved.

Referring to fig. 12, in some examples, the seal sleeve 630 may have a second connection 631, the second connection 631 being detachably connected to the core tube 410.

In some examples, the second connection 631 and the core tube 410 may be connected in a snap-fit manner. For example, as shown in fig. 12, the second connection portion 631 is provided with a second catch 6311, and the second end of the core tube 410 is provided with a second catch groove 419. When the second clamping groove 419 and the second clamp 6311 are clamped, the second connecting portion 631 and the core tube 410 achieve a clamping connection. In this case, the disassembly and assembly of the sealing member sleeve 630 can be facilitated, which is advantageous in improving the assembly efficiency.

Referring to fig. 12 and 13, in some examples, a 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 radially expandable and contractible when moving axially with respect to the core tube 410, and when contracted, the second connection portion 631 is snap-coupled to the core tube 410, and when expanded, the second connection portion 631 is uncoupled from the core tube 410. Specifically, as the seal sleeve 630 moves axially relative to the core tube 410, the second end of the core tube 410 may radially contract or expand, thereby effecting connection or disconnection.

Referring to fig. 5 and 7, in some examples, a second end of the core tube 410 may be provided with a second cut groove 4101, the second cut groove 4101 being provided along an 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 connection portion 631 and the second end of the core tube 410.

Referring to fig. 12 and 13, in some examples, the duckbill valve 610 has a flange 611 on a side facing the insert 200, and the seal sleeve 630 is adapted to compress the flange 611 when fitted to the second end of the core tube 410. Specifically, flange 611 is located on the side of seal sleeve 630 facing insert 200, and seal sleeve 630 and core tube 410 are capable of gripping flange 611 when seal sleeve 630 is in contact with the second end of core tube 410, thereby effecting securement of duckbill valve 610.

Referring to fig. 12 and 13, in some examples, seal assembly 600 may further include a second end cap 640, second end cap 640 interfacing with seal sleeve 630, second end cap 640 adapted to compress rear seal ring 620 when assembled to seal sleeve 630. Specifically, second end cap 640, when in contact with seal sleeve 630, second end cap 640 and seal sleeve 630 are capable of clamping back seal ring 620, thereby effecting securement of back seal ring 620. In addition, this arrangement also allows the rear seal ring 620 to be installed from the end of the seal sleeve 630 remote from the insert 200, which may further improve the assembly efficiency of the duckbill valve 610 and the rear seal ring 620.

Referring to fig. 12, in some examples, the second end cap 640 may have a third connection 641, the third connection 641 being detachably connected with the seal sleeve 630.

In some examples, third connection 641 and seal sleeve 630 may be connected in a snap-fit manner. For example, as shown in fig. 12, the seal sleeve 630 is provided with a third catch 632, and the third connection 641 is provided with a third catch 6411. When the third detent 632 and the third catch 6411 snap together, the seal sleeve 630 and the second end cap 640 make a snap fit connection. In this case, the second end cap 640 can be easily disassembled and assembled, which is advantageous in improving assembly efficiency.

Referring to fig. 12 and 13, in some examples, an end of the seal sleeve 630 remote from the core tube 410 is sleeved outside the third connection 641, and an end of the seal sleeve 630 remote from the core tube 410 may be configured to be radially retractable upon axial movement relative to the second end cap 640, upon which the seal sleeve 630 and the second end cap 640 snap-fit, and upon which the seal sleeve 630 and the second end cap 640 are disconnected. Specifically, as seal sleeve 630 is axially moved relative to second end cap 640, the end of seal sleeve 630 distal from core tube 410 may be radially contracted or expanded to effect connection or disconnection.

Referring to fig. 1, 2, 14, and 15, in some examples, the endoscope 10 can further include a knob 700, the knob 700 being sleeved over the second end of the core tube 410 and the seal sleeve 630. In this case, failure of the connection due to the expansion of the second end of the core tube 410 and the seal sleeve 630 by the force can be avoided.

Referring to fig. 1, in some examples, a knob 700 is rotatably disposed on the handle 100, the knob 700 is coupled to the core tube 410, and the knob 700 is configured to transmit torque to the core tube 410 to cause the core tube 410 to rotate the insertion portion 200 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 portion 200 to rotate circumferentially to adjust the field of view of the camera module 310.

Referring to fig. 1, in some examples, a knob 700 may be located at a second end of the core tube 410, with the knob 700 interfacing with the second end of the core tube 410. That is, knob 700 is located on the operator facing side of endoscope 10. In this case, the operator can conveniently operate the knob 700, and the risk of contamination of the knob 700 can be reduced.

Referring to fig. 14 and 15, in some examples, the knob 700 may have a fourth connection part 701, and the fourth connection part 701 is detachably connected with the core tube 410.

In some examples, the fourth connection 701 and the core tube 410 may be connected in a snap-fit manner. For example, as shown in fig. 14, the fourth connection part 701 is provided with a fourth clamping groove 7011, and the second end of the core tube 410 is provided with a fourth buckle 4102. When the fourth detent 7011 and the fourth catch 4102 are engaged, the knob 700 and the core tube 410 achieve a snap connection. In this case, the knob 700 can be easily disassembled and assembled, which is advantageous in improving assembly efficiency.

Referring to fig. 14, in some examples, knob 700 may have an operating face 702, the operating face 702 being provided with an anti-slip feature. In a specific implementation, the anti-slip structure may select one of a protective stripe, a protective coating, and a protective particle. In this case, the force required to operate the knob 700 can be reduced, thereby facilitating the operator's operation of the knob 700. Further, since the anti-slip surface is provided, the knob 700 can be operated to cause slipping.

Referring to fig. 2, in some examples, the endoscope 10 may further include a control circuit board 800, where the control circuit board 800 is disposed in the accommodating cavity, the control circuit board 800 is electrically connected to the camera module 310, and the control circuit board 800 is used to control the camera module 310 to obtain an image of a human body cavity. In this case, the image capturing module 310 can be controlled to acquire an image of the human body cavity by operating the control circuit board 800.

In some examples, the control circuit board 800 is electrically connected to a connection cable disposed on the camera module 310. Referring to fig. 5, in an embodiment, as shown in fig. 5, a wire outlet 4103 may be disposed on a side wall of the core tube 410, and two ends of a connection cable penetrating through the wire outlet 4103 are electrically connected to the camera module 310 and the control circuit board 800, respectively. In this case, the control circuit board 800 can be electrically connected to the camera module 310.

Referring to fig. 2 and 9, in some examples, the connection cable may be provided with a cable pay-off structure 340, and the cable pay-off structure 340 may be configured to be deformable and recoverable, in which case the cable pay-off structure 340 allows the connection cable to be wound around the core tube 410, and in which case the cable pay-off structure 340 withdraws the connection cable wound around the core tube 410. Specifically, during the process of adjusting the field of view of the camera module 310, the core tube 410 rotates circumferentially relative to the tube sleeve 430 or the handle 100, so that the connecting cable may be wound outside the core tube 410, and if the connecting cable cannot be retracted when the core tube 410 is reset, the connecting cable may be wound irregularly, so as to be damaged. Therefore, by providing the cable winding and unwinding structure 340 to retract the connection cable wound around the core tube 410, irregular winding of the connection cable can be avoided, and thus the connection cable can be protected from being damaged. It should be noted that, since the core tube 410 rotates in both a clockwise direction and a counterclockwise direction, the cable winding and unwinding structure 340 according to the embodiment of the present application should not be limited to the rotation direction of the core tube 410 when deforming or recovering.

In some examples, the deformation of the cable pay-off and take-up structure 340 may be, in particular, shrinkage, stretching, bending, or the like. It should be noted that the cable winding and unwinding structure 340 may be modified in other ways, and the embodiment of the application is not limited in particular.

In some examples, the cable pay-off and take-up structure 340 may be specifically configured to be capable of accumulating elastic potential energy upon deformation and to be capable of recovering based on the elastic potential energy. In this case, the automatic restoration of the cable pay-off and take-up structure 340 can be realized. In addition, compared with the wire coiling device for coiling and uncoiling the wire, the wire coiling and uncoiling structure 340 is simple in structure, does not need a driving device, is beneficial to reducing the structural loading and is convenient for operators to operate.

In some examples, the cable pay-off and take-up structure 340 may be made of a resilient soft material. For example, the cable winding and unwinding structure 340 may be made of a soft elastic material such as silica gel, latex or rubber.

Referring to fig. 2 and 9, in some examples, the cable winding and unwinding structure 340 may be a tubular structure, and the cable winding and unwinding structure 340 is sleeved on the connection cable. In this case, the connection cable can be protected by the cable winding and unwinding structure 340 to avoid frictional damage of the skin of the connection cable.

Referring to fig. 9, in some examples, the cable pay-off and take-up structure 340 may be disposed at a portion of the connection cable between the outlet 4103 and the control circuit board 800. In this case, the cable winding and unwinding structure 340 is disposed in the first passage, so that the drainage effect of the first passage can be prevented from being affected. In addition, the cable winding and unwinding structure 340 is only partially arranged on the connecting cable, so that the material consumption can be reduced, and the cost can be saved.

Referring to fig. 9, in some examples, the cable pay-off and take-up structure 340 may include a deformation portion 341 and a support portion 342. Wherein, deformation portion 341 is freely provided for deformation and restoration, and support portion 342 is connected and fixed with sleeve 430 and supports deformation portion 341. In a specific implementation, the cable pay-off and take-up structure 340 may be divided into two sections, one of which is the deformation portion 341 and the other of which is the support portion 342. In this case, it is possible to prevent the cable winding and unwinding structure 340 from being unable to store elastic potential energy as a whole moves with the connection cable, thereby ensuring the recovery effect of the cable winding and unwinding structure 340.

Referring to fig. 9, in some examples, the supporting portion 342 may be specifically connected and fixed to the fixing portion 435 provided on the sleeve 430, and the supporting portion 342 and the fixing portion 435 may be connected by a snap-fit manner. For example, the fixing portion 435 is a clamping block, and the clamping block can clamp the supporting portion 342, so as to fix the supporting portion 342. In this case, the fixing of the supporting portion 342 can be facilitated, which is advantageous in improving the assembly efficiency.

Referring to fig. 1 and 2, in some examples, the handle 100 may be provided with a peripheral connection wire 180, the peripheral connection wire 180 being used to electrically connect the control circuit board 800 with an external device. In this case, it can be convenient to electrically connect the control circuit board 800 with an external device such as an image processor, a computer, or the like.

Referring to fig. 1, in some examples, the peripheral connection line 180 may be located at the bottom of the handle 100. In particular, in this case, it is possible to avoid that contaminated liquid enters the inside of the handle 100 from the gap between the peripheral connection wire 180 and the handle 100, thereby contaminating the internal devices.

Referring to fig. 1 and 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 with an external device through the connection terminal 181. In a specific implementation, the connection terminal 181 may employ a metal contact or an USB Type-C connector, or the like. In this case, the peripheral connection wire 180 can be conveniently electrically connected with the external device, which is safer and more convenient than the conventional direct connection method.

Referring to fig. 1 and 2, in some examples, the handle 100 may be provided with a key pad 190 that cooperates with the control circuit board 800 for operating the control circuit board 800.

Referring to fig. 1 and 2, in some examples, the key region 190 may be provided with a first key switch 191, the first key switch 191 being used to operate the control circuit board 800 so that the control circuit board 800 controls the camera module 310 to acquire an image.

Referring to fig. 1, in some examples, the key region 190 may be located on a side of the handle 100 facing away from the insertion portion 200. In this case, it is possible to prevent contaminated liquid from entering the inside of the handle 100 from the gap between the key pad 190 and the handle 100, thereby contaminating the internal devices. Further, since the key region 190 is located on the side of the handle 100 facing away from the insertion portion 200, that is, the key region 190 is located on the side of the handle 100 facing the operator, this arrangement can facilitate the operator's operation of the keys.

In some examples, the control circuit board 800 may 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 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 achieved by operating the control circuit board 800.

Referring to fig. 1 and 2, in some examples, in order to facilitate controlling the opening and closing of the water inlet valve 141 and the water outlet valve 161, the key area 190 may be further 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.

Referring to fig. 2, 16 and 17, in some examples, endoscope 10 may further include a detection assembly 900, detection assembly 900 being disposed in the receiving cavity, detection assembly 900 being configured to obtain a rotational direction and a rotational angle of insertion portion 200. In this case, detection of rotation information (rotation direction and rotation angle) of the insertion portion can be achieved, so that the direction and angle of the image can be corrected based on the detection information for easy inspection by the operator.

In some examples, the detection assembly 900 may include a rotation angle sensor 910, and the rotation angle sensor 910 may be sleeved outside the insertion portion 200 and circumferentially fixed with the insertion portion 200. Illustratively, the rotational angle sensor 910 is fixedly coupled to the first end cap 430 such that the rotational angle sensor 910 is circumferentially fixable to the insert 200. In this case, the rotation angle sensor 910 may rotate following the insertion portion 200, thereby acquiring rotation information of the insertion portion 200.

Referring to fig. 16 and 17, in some examples, the detection assembly 900 may include a rotation angle sensor 910 and a transmission mechanism. Wherein the rotation angle sensor 910 is fixedly connected to the handle 100. A transmission mechanism is provided between the insertion portion 200 and the rotation angle sensor 910, the transmission mechanism being for transmitting rotation information of the insertion portion 200 to the rotation angle sensor 910 so that the rotation angle sensor 910 acquires a rotation direction and a rotation angle of the insertion portion 200. In this case, detection of the rotation direction and rotation angle of the insertion portion 200 can be achieved.

In some examples, the transmission may be geared. Compared with other transmission modes, the gear transmission has high precision, and is beneficial to improving the detection accuracy.

Referring to fig. 16 and 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 portion 200 (the outer tube 220), the second transmission gear 930 is sleeved on the rotation shaft of the rotation angle sensor 910, and the second transmission gear 930 is engaged with the first transmission gear 920. In this case, gear transmission of the core tube 410 and the rotation angle sensor 910 can be achieved.

In some examples, the gear ratio of the first transfer gear 920 and the second transfer gear 930 may be 2:1. It is to be understood that the transmission ratio of the first transmission gear 920 and the second transmission gear 930 may be other values, which will not be described in detail in the embodiments of the present application.

Referring to fig. 16 and 17, in some examples, both the first and second transfer gears 920 and 930 may be bevel gears. Compared with a common gear, the bevel gear has low noise, stable operation and lower requirement on installation space, and is beneficial to reducing the structural size.

In some examples, the first drive gear 920 may be circumferentially fixed with the insertion portion 200 and located between the core tube 410 and the limit structure 102 provided to the handle 100. In this case, the first transmission gear 920 can be fixed by a stopper method, and the first transmission gear 920 can be prevented from moving in the axial direction with respect to the insertion portion 200. Compared with the mode of fixing the first transmission gear 920 by using a connecting piece or a connecting structure, the device is simple and convenient to install, and is beneficial to improving the assembly efficiency.

In some examples, the first drive gear 920 may be secured circumferentially to the insert 200 by the first end cap 420 or the core tube 410. For example, as shown in fig. 8 and 16, the first transmission gear 920 is provided with a fifth limiting portion 921, and the fifth limiting portion 921 cooperates with a sixth limiting portion 422 provided to the first end cap 420. 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 part 200 can be achieved such that the first transmission gear 920 can transmit the rotation information of the core tube 410 and the insertion part 200 to the rotation angle sensor 910.

Referring to fig. 16 and 18, in some examples, the first transmission gear 920 may have a mounting hole 922, the mounting hole 922 being used to fit the first transmission gear 920 around the insertion portion 200, the aperture of the mounting hole 922 gradually increasing from the first end of the insertion portion 200 to the second end of the insertion portion 200. That is, a gap may be provided between the first transmission gear 920 and the insertion portion 200, and the gap may be gradually increased from the first end of the insertion portion 200 to the second end of the insertion portion 200, and may have a horn shape. In implementations, the aperture of the mounting hole 922 may vary only at the end of the first drive gear 920 remote from the core tube 410. In this case, the root stress when the insertion portion 200 is forced to bend can be dispersed by the gap between the first transmission gear 920 and the insertion portion 200, and the possibility of deformation and breakage of the outer tube 220 can be reduced.

Referring to fig. 2 and 17, in some examples, a front seal ring 1000 may be provided between the insertion portion 200 and the handle 100. In particular implementations, the front seal ring 1000 can provide a seal between the handle 100 and the insert 200 that prevents contaminating fluids from entering the interior of the handle 100. The front seal ring 1000 can also support the insertion portion 200, and can disperse root stress when the outer tube 220 is subjected to bending by being matched with the first transmission gear 920. It should be noted that, in some embodiments, it is necessary to rotate the insertion portion 200 about the axis of the inner tube 210 as a rotation center, so as to avoid interference between the insertion portion 200 and the surgical instrument during rotation. Thus, the bore of the front seal ring 1000 may be eccentrically positioned to meet the rotational requirements of the insert 200.

Referring to fig. 1, in some examples, the handle 100 may include a body 110, the body 110 including a first housing 111 and a second housing 112, the first housing 111 and the second housing 112 enclosing a receiving cavity.

In some examples, the first housing 111 and the second housing 112 may be connected in a snap-fit manner. In this case, the first housing 111 and the second housing 112 can be easily disassembled and assembled, which is advantageous in improving assembly efficiency.

Referring to fig. 1 and 2, in some examples, the handle 100 further includes a first end cap 120, the first end cap 120 being mounted at a front end of the body 110, the first end cap 120 being adapted to secure the first housing 111 and the second housing 112 when mounted to the body 110. For example, the first potting head 120 may be provided at the front end of the main body 110 and wrap portions of the first case 111 and the second case 112. In this case, the body 110 can be reinforced with the first cap 120, thereby contributing to the improvement of the structural strength of the handle 100.

In some examples, the first sleeve 120 is snap-fit to the body 110. In this case, the first looper 120 can be easily disassembled and assembled, which is advantageous in improving assembly efficiency. In addition, the second potting head 130 can be used to strengthen the body 110, thereby facilitating the structural strength of the handle 100.

Referring to fig. 1 and 2, in some examples, the handle 100 further includes a second end cap 130, the second end cap 130 being mounted to the bottom end of the body 110, the second end cap 130 being adapted to secure the first housing 111 and the second housing 112 when mounted to the body 110. For example, the bottom of the grip region 101 is provided with a pocket communicating with the receiving cavity, and the second potting head 130 may be mounted at the pocket and connected to the first and second housings 111 and 112, respectively.

In some examples, the second end cap 130 is snap-fit to the body 110. In this case, the first looper 120 can be easily disassembled and assembled, which is advantageous in improving assembly efficiency. In addition, the second potting head 130 can be used to strengthen the body 110, thereby facilitating the structural strength of the handle 100.

The present disclosure is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. It is therefore contemplated to cover any such omissions, modifications, equivalents, improvements or similar fall within the spirit and scope of the one or more embodiments of the application.

The foregoing is merely illustrative embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and the application should be covered. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (19)

1. An endoscope is provided, which comprises a body, characterized by comprising the following steps:

A handle having a receiving cavity;

An insertion portion having a first end penetrating through the handle and a second end remote from the handle;

the core tube is rotatably arranged in the accommodating cavity, sleeved at the first end of the insertion part and circumferentially fixed with the insertion part;

Wherein the insertion portion has an instrument channel;

the core tube is provided with a first end sleeved on the insertion part and a second end far away from the insertion part, and the second end of the core tube is provided with a sealing component which comprises a duckbill valve and a rear sealing ring;

The duckbill valve is positioned within the second end of the core tube, the duckbill valve being configured to open and close, the duckbill valve allowing surgical instruments to pass through the instrument channel when open and closing the second end of the core tube;

The rear seal ring is positioned within the second end of the core tube, the rear seal ring being configured to seal a gap between the surgical instrument and the core tube when the surgical instrument is threaded into the instrument channel.

2. The endoscope of claim 1, wherein the duckbill valve is located on a side of the rear seal ring facing the insertion portion.

3. The endoscope of claim 2, wherein the seal assembly further comprises a seal sleeve, the seal sleeve being coupled to the second end of the core tube, the duckbill valve and the rear seal ring each being nested within the seal sleeve.

4. The endoscope of claim 3, wherein the seal sleeve is snap-fit connected to the second end of the core tube.

5. An endoscope according to claim 3, wherein said duckbill valve has a flange on a side facing said insertion portion;

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

6. The endoscope of claim 3, wherein the seal assembly further comprises a second end cap that interfaces with the seal sleeve, the second end cap adapted to compress the rear seal ring when assembled to the seal sleeve.

7. The endoscope of claim 6, wherein the second end cap is snap-fit with the seal sleeve.

8. The endoscope of claim 1, further comprising a sleeve that is disposed over and in rotational engagement with the core tube, the sleeve being fixedly connected to the handle.

9. The endoscope of claim 8, wherein the insertion portion comprises an outer tube and an inner tube;

The core tube is provided with a first interface and a second interface, a first pipe cavity and a second pipe cavity are formed between the core tube and the insertion part, the first interface is communicated with the outer pipe through the first pipe cavity, and the second interface is communicated with the inner pipe through the second pipe cavity;

The pipe sleeve is provided with a first connector and a second connector, a first annular channel and a second annular channel are formed between the pipe sleeve and the core pipe, the first connector is communicated with the first connector through the first annular channel, and the second connector is communicated with the second connector through the second annular channel.

10. The endoscope of claim 9, wherein an outer tube seal ring is disposed between the core tube and the outer tube.

11. The endoscope of claim 9, wherein an inner tube seal ring is disposed between the core tube and the inner tube.

12. The endoscope of claim 9, wherein a first annular channel seal ring and a second annular channel seal ring are disposed between the core tube and the sheath tube, wherein,

The first annular channel sealing rings are positioned on two sides of the first annular channel;

the second annular channel sealing rings are positioned on two sides of the second annular channel.

13. The endoscope of claim 9, wherein the second lumen is provided with a stent configured to guide the surgical instrument.

14. The endoscope of claim 9, wherein 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 of claim 14, wherein the water inlet connection is provided with a water inlet valve and the water outlet connection is provided with a water outlet valve.

16. The endoscope of claim 15, further comprising a control circuit board disposed in the receiving cavity, the control circuit board electrically connected to the inlet valve and the outlet valve, the control circuit board configured to control the opening and closing of the inlet valve and the outlet valve.

17. An endoscope as in claim 16 wherein the handle is provided with a second key switch for operating the control circuit board.

18. The endoscope of claim 17, wherein the second key switch is located on a side of the handle facing away from the insertion portion.

19. An endoscopic apparatus comprising an endoscope as defined in any one of claims 1-18.