An insertion section and an endoscope

Abstract

The present invention discloses an insertion portion and an endoscope, relating to the field of medical devices. The insertion portion includes an insertion tube, a front-end assembly, and a first driving mechanism. The insertion tube has a first channel that extends from the proximal end to the distal end of the insertion tube. The front-end assembly has a device mounting portion, a second channel penetrating through the front-end assembly, and an opening provided on the distal sidewall of the second channel. The device mounting portion partially blocks the first channel. The second channel communicates with the first channel. The opening is located on the side of the second channel away from the device mounting portion, and the bottom of the opening extends to the proximal end of the device mounting portion. The driving mechanism can drive the device mounting portion to deflect, so as to increase the area of the opening in the axial direction of the insertion portion. This setting can increase the area at the opening, reduce the influence of the device mounting portion and the camera module mounted on the device mounting portion on the cross-sectional area of the first channel, increase the flow rate of the insertion portion, and improve the use effect and working efficiency of the insertion portion.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to an insertion portion and an endoscope. Background Art

[0002] An endoscope is used for visually observing and diagnosing the state of internal tissues and organs of the human body. During the disease treatment stage, medical staff usually need to use the suction channel of the endoscope to suck substances such as sputum and thrombus to achieve diagnosis and treatment operations. To facilitate the smooth entry of the endoscope into the human body, the volume of the endoscope should not be set too large.

[0003] In addition, a camera module is integrated at the distal end of the insertion portion of the endoscope. The camera module provides a visual image to facilitate diagnosis and treatment by medical staff. However, this also further significantly reduces the cross-sectional area of the suction channel of the endoscope. In this way, the flow rate of the suction channel of the endoscope is greatly limited, and the possibility of a medical device with a larger diameter passing smoothly through the instrument tube of the endoscope is also limited. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the related art, the present application provides an insertion portion and an endoscope to solve the above technical problems.

[0005] The present application provides an insertion portion for an endoscope. The insertion portion includes an insertion tube, a front-end assembly, and a first driving mechanism. The insertion tube has a first channel that runs through from the proximal end to the distal end of the insertion tube. The front-end assembly has a device mounting portion, a second channel that runs through the front-end assembly, and an opening provided on the distal sidewall of the second channel. The device mounting portion partially blocks the first channel. The second channel communicates with the first channel. The opening is located on the side of the second channel away from the device mounting portion, and the bottom of the opening extends to the proximal end of the device mounting portion. The front-end assembly is rotationally engaged with the distal end of the insertion tube. The first driving mechanism is connected to the front-end assembly and is used to drive the front-end assembly to deflect towards the first side of the insertion tube, where the first side of the insertion tube is the side away from the opening.

[0006] In an embodiment of the present application, the front-end assembly and the insertion tube are rotationally engaged and have a rotation axis. The bottom of the opening extends to the side adjacent to the proximal end of the insertion portion of the rotation axis.

[0007] In an embodiment of the present application, the insertion portion further includes a second driving mechanism. The second driving mechanism is connected to the front-end assembly and is used to drive the front-end assembly to deflect towards the side of the insertion tube close to the opening.

[0008] In an embodiment of the present application, the front-end component can be switched between a first position and a second position. When the front-end component is in the first position, the front-end component is coaxial with the insertion tube, and the front-end component is rotationally limitedly engaged with the insertion portion. When the front-end component is in the second position, the front-end component deflects relative to the insertion tube to the side away from the opening of the insertion tube.

[0009] In an embodiment of the present application, the insertion tube further includes an active bending section for deflecting towards the first side and / or the second side of the insertion portion. The first side is the side on one first radial direction of the insertion tube, and the second side is the side on a second radial direction of the insertion tube. The first radial direction is perpendicular to the second radial direction.

[0010] In an embodiment of the present application, the first driving mechanism is connected to the active bending section, and the first driving mechanism drives the active bending section to deflect towards the first side or the second side.

[0011] In an embodiment of the present application, the active bending section includes a first rotating section and a second rotating section. The distal end of the first rotating section is rotationally connected to the front-end component, and the second rotating section is rotationally connected to the proximal end of the first rotating section;

[0012] When the insertion portion is straightened, the resistance of the first rotating section rotating relative to the second rotating section towards the third side of the insertion tube is the first resistance. The third side of the insertion tube and the first side of the insertion tube are opposite sides of the insertion tube. The resistance of the front-end component rotating relative to the first rotating section towards the third side of the insertion tube is the second resistance, and the second resistance is greater than the first resistance.

[0013] In an embodiment of the present application, the front-end component includes a front-end seat. The front-end seat and the active bending section are of an integral structure. A first arc-shaped groove is arranged between the first rotating section and the front-end component. The first arc-shaped groove is arranged on the first side of the active bending section and extends along the circumferential direction of the insertion portion;

[0014] A second arc-shaped groove and a first arc-shaped slit are arranged between the first rotating section and the second rotating section. The second arc-shaped groove is arranged on the third side of the active bending section, and the first arc-shaped slit is arranged on the first side of the active bending section. The first arc-shaped slit and the second arc-shaped groove are circumferentially distributed along the insertion portion;

[0015] The connecting portion connecting the front-end component and the front-end seat is the first connecting portion, and the connecting portion connecting the first rotating section and the second rotating section is the second connecting portion. The stiffness of the first connecting portion is greater than the stiffness of the second connecting portion. When the active bending section is in a straightened state, the parts of the first rotating section and the second rotating section forming the first arc-shaped slit abut against each other.

[0016] To achieve the above and other related purposes, the present application provides an endoscope, including the aforementioned insertion portion and a negative pressure suction valve. The negative pressure suction valve is communicated with the first channel.

[0017] In an embodiment of the present application, the negative pressure suction valve is in transmission connection with the first driving mechanism. When the negative pressure suction valve is opened, the first driving mechanism drives the front-end assembly to deflect towards the first side of the insertion portion.

[0018] In an embodiment of the present application, the endoscope further includes a traction wheel. The first driving mechanism is a traction rope suitable for driving the insertion portion to deflect. The traction rope is connected to the traction wheel, and the first driving mechanism further includes a locking portion. When the negative pressure suction valve is opened, the locking portion can lock the traction wheel. When the negative pressure suction valve is closed, the locking portion can release the traction wheel.

[0019] The technical solution adopted by the present invention can achieve the following beneficial effects: The device installation portion can be used to install devices such as cameras, lighting lamps, etc. The insertion portion can be inserted into the patient's body until the affected area. In the insertion portion, the first channel and the second channel can perform suction work or insert medical devices. During this period, the driving mechanism can drive the device installation portion to deflect to increase the area of the opening in the axial direction of the insertion portion. This setting can increase the area of the opening, reduce the influence of the device installation portion and the camera module installed on the device installation portion on the cross-sectional area of the first channel, increase the flow rate of the insertion portion, and improve the use effect and working efficiency of the insertion portion. In addition, the first channel can insert medical devices with a larger volume, improve the adaptability of the insertion portion, and expand the usage scenarios of the insertion portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic structural diagram of an endoscope shown in an exemplary embodiment of the present application;

[0022] Figure 2 is a schematic structural diagram of an insertion portion shown in an exemplary embodiment of the present application;

[0023] Figure 3 is a cross-sectional view of an insertion portion shown in an exemplary embodiment of the present application;

[0024] Figure 4 is a cross-sectional view of another insertion portion shown in an exemplary embodiment of the present application;

[0025] Figure 5 is a cross-sectional view of yet another insertion portion shown in an exemplary embodiment of the present application;

[0026] Figure 6 It is a cross-sectional view of yet another insertion part shown in an exemplary embodiment of the present application;

[0027] Figure 7 It is a cross-sectional view of the insertion part after rotation shown in an exemplary embodiment of the present application;

[0028] Figure 8 It is a schematic structural diagram of the active bending section and the front-end assembly shown in an exemplary embodiment of the present application;

[0029] Figure 9 It is a schematic structural diagram of the insertion part from another perspective shown in an exemplary embodiment of the present application;

[0030] Figure 10 It is a schematic structural diagram of the first rotating joint, the second rotating joint, and the front-end assembly shown in an exemplary embodiment of the present application;

[0031] Figure 11 It is a schematic structural diagram of another type of first rotating joint, second rotating joint, and front-end assembly shown in an exemplary embodiment of the present application;

[0032] Figure 12 It is a schematic structural diagram of yet another type of first rotating joint, second rotating joint, and front-end assembly shown in an exemplary embodiment of the present application;

[0033] Figure 13 It is a schematic structural diagram of another type of endoscope shown in an exemplary embodiment of the present application;

[0034] Figure 14 is Figure 13 the enlarged view at position a in

[0035] In the figure: 1, endoscope; 100, insertion part; 110, insertion tube; 111, first channel; 120, front-end assembly; 121, device installation part; 122, second channel; 123, opening; 124, front-end seat; 125, camera module; 130, first driving mechanism; 131, locking part; 140, second driving mechanism; 150, active bending section; 151, first rotating joint; 152, second rotating joint; 153, first arc-shaped groove; 154, second arc-shaped groove; 155, first arc-shaped slit; 160, first side; 170, second side; 180, third side; 200, negative pressure suction valve; 210, transmission part; 300, traction rope; 400, traction wheel; 500, operation part. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope protected by the present invention.

[0037] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0038] In the embodiments of this application, "proximal end" and "distal end" refer to the relative distances of each component from the user in the usage environment. Among them, the end closer to the user is designated as the "proximal end", and the end farther from the user is designated as the "distal end".

[0039] This application provides an insertion part 100. Please refer to Figure 1 , the insertion part 100 is for the endoscope 1, and the insertion part 100 can extend into the human body to perform medical operations. Exemplarily, the endoscope 1 may further include an operation part 500, and the proximal end of the insertion part 100 is connected to the operation part 500.

[0040] Please refer to Figure 2 and Figure 3 , the insertion part 100 includes an insertion tube 110, a front-end assembly 120 and a first driving mechanism 130. The front-end assembly 120 is connected to the distal end of the insertion part 100, and the first driving mechanism 130 is connected to the front-end assembly 120.

[0041] Please refer to Figure 3 , the insertion tube 110 has a first channel 111, and the first channel 111 runs through from the proximal end of the insertion tube 110 to the distal end of the insertion tube 110. For example, the insertion tube 110 is a hollow structure, and the first channel 111 can be used to inject media, insert treatment instruments, etc. The treatment instruments can be biopsy forceps, laser devices, etc., and specific limitations are not made in this embodiment.

[0042] The endoscope 1 can be configured with a camera module 125 to observe the internal conditions of the human body. However, the camera module 125 may block or occupy the first channel 111 of the insertion portion 100, resulting in a limited cross-sectional area of the first channel 111, thereby severely restricting the passing ability and actual flow rate of the first channel 111. In this embodiment, please continue to refer to Figure 3 , the front-end assembly 120 includes a device mounting portion 121, a second channel 122, and an opening 123. The opening 123 is disposed on the distal sidewall of the second channel 122, and the opening 123 communicates with the second channel 122. The second channel 122 penetrates through the front-end assembly 120, and the second channel 122 communicates with the first channel 111 so that a medium can be injected into the opening 123, or a treatment instrument can extend into the opening 123.

[0043] Please continue to refer to Figure 3 , the device mounting portion 121 can mount the camera module 125, the lighting module, etc., and this embodiment does not make any restrictions. Figure 3 The structural schematic diagram of the camera module 125 and the device mounting portion 121 is shown. The device mounting portion 121 partially blocks the first channel 111, and the opening 123 is located on the side of the second channel 122 away from the device mounting portion 121. The device mounting portion 121 and the opening 123 are relatively independent, and a medium or a treatment instrument can extend out from the opening 123 without interfering with the normal operation of the device mounting portion 121 and other components mounted on the device mounting portion 121.

[0044] As Figure 3 shown, the bottom of the opening 123 extends to the proximal end of the device mounting portion 121. Among them, the bottom of the opening 123 can be the end of the opening 123 away from the device mounting portion 121, and the top of the opening 123 can be the end of the opening 123 away from the device mounting portion 121. For example, the end face forming the opening 123 is configured as an inclined surface so that the top of the opening 123 extends to the distal end of the front-end assembly 120. In the axial direction of the insertion portion 100, the bottom of the opening 123 can extend to the proximal end of the device mounting portion 121. The front-end assembly 120 is rotationally engaged with the distal end of the insertion tube 110, and the first driving mechanism 130 is connected to the front-end assembly 120, and the first driving mechanism 130 is used to drive the front-end assembly 120 to deflect toward the first side 160 of the insertion tube 110. Among them, the first side 160 of the insertion tube 110 is the side of the insertion tube 110 away from the opening 123. Exemplarily, please refer to Figure 3 and Figure 4 , Figure 3 is the structural schematic diagram before the device mounting portion 121 deflects, Figure 4 is the structural schematic diagram after the device mounting portion 121 deflects. The first driving mechanism 130 can drive the front-end assembly 120 to deflect toward the first side 160 of the insertion tube 110, and its deflection direction is as Figure 4As shown by L2 in []. During this process, the orientation of the opening 123 changes, and the projected area of the opening 123 on the axis of the insertion portion 100 increases. For example, Figure 3 d1 in [] is less than Figure 4 d2 in [], in the axial direction of the insertion portion 100 (as shown by L1 in Figure 4 ), the projected area of the opening 123 increases significantly after deflection. This setting can enable the opening 123 restricted by the spatial layout to have a significant increase in its projected area as the front-end component 120 deflects, thereby improving the passability and flow rate of the opening 123.

[0045] It can be understood that the bottom of the opening 123 extends to the proximal end of the device mounting portion 121. In the axial direction of the insertion portion 100, the connection line between the device mounting portion 121 and the bottom of the opening 123 is inclined along the direction from the device mounting portion 121 to the opening 123. During the process of the change in the orientation of the opening 123, the inclination angle between the connection line between the device mounting portion 121 and the bottom of the opening 123 and the radial direction of the insertion portion 100 gradually decreases, and in the axial direction of the insertion portion 100, the area of the first channel 111 blocked by the device mounting portion 121 gradually decreases, so as to improve the passability and flow rate of the opening 123.

[0046] Preferably, referring to Figure 5 , the front-end component 120 and the insertion tube 110 are rotationally matched, there is a rotation axis between the front-end component 120 and the insertion tube 110, and the bottom of the opening 123 extends to the side adjacent to the proximal end of the insertion portion 100 of the rotation axis. Exemplarily, the front-end component 120 and the insertion tube 110 are rotationally matched through a pivot, and the rotation axis between the front-end component 120 and the insertion tube 110 can be the axis of the pivot. This setting can enable the bottom of the opening 123 to extend to the side adjacent to the proximal end of the insertion portion 100 of the rotation axis, the bottom of the opening 123 does not rotate with the pivot relative to the insertion tube 110, and the top of the opening 123 rotates towards the direction close to the device mounting portion 121 with the pivot. The two ends of the opening 123 move away from each other, so that the opening 123 deforms, and the size of the deformed opening 123 increases, further improving the passability and flow rate of the opening 123.

[0047] In this embodiment, referring to Figure 6 , the insertion portion 100 may further include a second driving mechanism 140, the second driving mechanism 140 is connected to the front-end component 120, and the second driving mechanism 140 is used to drive the front-end component 120 to deflect towards the side of the insertion tube 110 close to the opening 123. This setting can flexibly control the rotation of the front-end component 120, so that the device mounting portion 121 and its camera module 125 face different directions, facilitating observation by medical staff. In addition, the orientation of the opening 123 changes accordingly, so that the opening 123 can suck or inject the medium in different directions.

[0048] In this embodiment, the front-end component 120 can be switched between a first position and a second position. Exemplarily, as Figure 3 shown, when the front-end component 120 is in the first position, the front-end component 120 is coaxial with the insertion tube 110, and the front-end component 120 is rotationally limitedly engaged with the insertion portion 100. As Figure 4 shown, when the front-end component 120 is in the second position, the front-end component 120 deflects relative to the insertion tube 110 to the side where the insertion tube 110 is away from the opening 123, so as to increase the projected area of the opening 123 on the insertion tube 110 and improve the passing performance and flow rate of the opening 123.

[0049] In one implementation manner, please refer to Figure 6 , the first driving mechanism 130 and the second driving mechanism 140 can be used to drive the front-end component 120 to switch the front-end component 120 between the first position and the second position. Further, the second driving mechanism 140 and the first driving mechanism 130 are respectively arranged on opposite sides of the insertion tube 110, and the force application directions of the first driving mechanism 130 and the second driving mechanism 140 on the front-end component 120 are opposite. As Figure 4 shown, the first driving mechanism 130 drives the front-end component 120 to deflect toward the side away from the opening 123. As Figure 7 shown, the second driving mechanism 140 drives the front-end component 120 to deflect toward the side close to the opening 123, and its deflection direction is as shown by L3 in Figure 7 . This setting can flexibly control the deflection direction of the front-end component 120, improve the passing performance and flow rate of the opening 123, or restore it to its original state to adapt to different implementation scenarios.

[0050] In addition, as Figure 7 shown, the end face forming the opening 123 can be an inclined surface, and the second driving mechanism 140 can rotate the device mounting portion 121 toward the direction close to the axis of the insertion portion 100, so that the surface of the device mounting portion 121 away from the opening 123 is inclined relative to the axis of the insertion portion 100. This setting can make the front-end component 120 substantially a conical structure, and the top of the front-end component 120 is substantially located on the axis of the insertion portion 100. The conical front-end component 120 has a guiding effect to insert the insertion portion 100 along its own axis and improve the insertion effect of the insertion portion 100.

[0051] In this embodiment, please refer to Figure 8, the insertion tube 110 may further include an active bending section 150. The active bending section 150 can complete relative rotation under the operation of medical staff. The active bending section 150 is used to deflect towards the first side 160 and / or the second side 170 of the insertion part 100. This setting enables the active bending section 150 to rotate along two axes. In other words, the active bending section 150 can rotate towards the direction close to the first side 160 of the insertion part 100 or away from the first side 160 of the insertion part 100 (as shown by L4 in Figure 8 ). The active bending section 150 can rotate towards the direction close to the second side 170 of the insertion part 100 or away from the second side 170 of the insertion part 100 (as shown by L5 in Figure 8 ), so that the active bending section 150 can achieve four-way rotation. Through the setting of the four-way rotating active bending section 150, when a doctor performs an endoscope 1 examination or surgery, it is possible to easily bypass obstacles in the body and accurately locate the area that needs to be examined or treated, and medical staff can more carefully observe and analyze the patient's internal conditions.

[0052] Among them, as shown in Figure 9 , the first side 160 is one side of the first radial direction of the insertion tube 110, and the second side 170 is one side of the second radial direction of the insertion tube 110. The first radial direction is perpendicular to the second radial direction. It can be understood that the first radial direction can be the diameter of the insertion tube 110 extending in the vertical direction, and the second radial direction can be the diameter of the insertion tube 110 extending in the horizontal direction, and the two are perpendicular to each other. For example, the first side 160 can be the lower side of the insertion part 100, and the second side 170 can be the left side of the insertion part 100.

[0053] Please refer back to Figure 8 , the first driving mechanism 130 is connected to the active bending section 150, and the first driving mechanism 130 drives the active bending section 150 to deflect towards the first side 160 or the second side 170. By receiving the operation from the doctor, the first driving mechanism 130 can respond quickly and accurately, and drive the active bending section 150 to deflect in a smooth and controllable manner towards the desired direction. This setting can greatly improve the flexibility and accuracy of the endoscope 1 examination and surgery. When the first channel 111 and the second channel 122 are working, the first driving mechanism 130 drives the active bending section 150 to deflect towards the first side 160 to increase the flow rate and passability of the opening 123. When the insertion part 100 needs to penetrate into a narrow and curved cavity, medical staff manipulate the first driving mechanism 130 to bend towards the first side 160 or the second side 170, so as to drive the active bending section 150 to deflect at the best angle and position, further improving the safety and efficiency of the endoscope 1 examination and surgery.

[0054] In this embodiment, please refer to Figure 10, the active bending section 150 may include a first rotating joint 151 and a second rotating joint 152. The distal end of the first rotating joint 151 is rotatably connected to the front-end assembly 120, and the second rotating joint 152 is rotatably connected to the proximal end of the first rotating joint 151. Exemplarily, the first rotating joint 151 and the front-end assembly 120 are rotatably connected through a first pivot shaft, so that the camera module 125 and the opening 123 of the front-end assembly 120 can face different directions. The second rotating joint 152 and the first rotating joint 151 are rotatably connected through a second pivot shaft. The second rotating joint 152 can further increase the rotation range of the front-end assembly 120 to increase the working range of the camera module 125 and the opening 123. This setting not only improves the observation ability of the endoscope 1, enabling it to capture more details, but also provides a broader treatment operation space for doctors.

[0055] Among them, please refer back to Figure 9 , the first side 160 and the third side 180 may be two mutually distant sides of the insertion portion 100. For example, the first side 160 may be the lower side of the insertion portion 100, the second side 170 may be the left side of the insertion portion 100, the third side 180 may be the upper side of the insertion portion 100, and the second side 170 may be perpendicular to the third side 180.

[0056] When it is necessary to control the insertion portion 100 to rotate towards the third side 180, the front-end assembly 120 bends towards the third side 180 relative to the first rotating joint 151, and the device mounting portion 121 may squeeze the opening 123, resulting in the closing or partial closing of the opening 123, affecting the normal suction of the opening 123. In this embodiment, please refer to Figure 11 , when the insertion portion 100 is straightened, the resistance of the first rotating joint 151 rotating relative to the second rotating joint 152 towards the third side 180 of the insertion tube 110 is the first resistance. The third side 180 and the first side 160 of the insertion tube 110 are two opposite sides of the insertion tube 110. The resistance of the front-end assembly 120 rotating relative to the first rotating joint 151 towards the third side 180 of the insertion tube 110 is the second resistance, and the second resistance is greater than the first resistance. Exemplarily, as Figure 11 shown, relative to the first rotating joint 151, the front-end assembly 120 can only rotate towards the first side 160, or the front-end assembly 120 can only rotate towards the third side 180 slightly. The bottom of the opening 123 can extend between the front-end assembly 120 and the first rotating joint 151. When the front-end assembly 120 bends towards the third side 180 relative to the first rotating joint 151, this setting can preferentially rotate the first rotating joint 151 relative to the second rotating joint 152, realizing the overall rotation of the first rotating joint 151 and the front-end assembly 120, avoiding the opposite movement of the bottom and the top of the opening 123, and maintaining the passability and flow rate of the opening 123.

[0057] In a more specific embodiment, please refer to Figure 12 , the front-end component 120 may include a front-end seat 124, and the front-end seat 124 and the active bending section 150 are of an integral structure. In other words, the front-end component 120 and the active bending section 150 can be integrally formed by injection molding or the like, and the active bending section 150 can be integrally cut, with a faster forming rate and lower manufacturing cost.

[0058] Specifically, a first arc-shaped groove 153 is disposed between the first rotating joint 151 and the front-end component 120. The first arc-shaped groove 153 is provided on the first side 160 of the active bending section 150 and extends along the circumferential direction of the insertion portion 100. A second arc-shaped groove 154 and a first arc-shaped slit 155 are disposed between the first rotating joint 151 and the second rotating joint 152. The second arc-shaped groove 154 is provided on the third side 180 of the active bending section 150, and the first arc-shaped slit 155 is provided on the first side 160 of the active bending section 150. The second arc-shaped groove 154 and the first arc-shaped slit 155 can be distributed along the circumferential direction of the insertion portion 100. The setting of the first arc-shaped slit 155 can make the area of the active bending section 150 between the first rotating joint 151 and the second rotating joint 152 smaller, and the cross-sectional area of the active bending section 150 between the first rotating joint 151 and the front-end component 120 larger. Under the same or similar materials and shapes, the larger the cross-sectional area between the first rotating joint 151 and the front-end component 120, the more difficult it is for it to deform. Thus, the second resistance is greater than the first resistance, so as to realize preferentially rotating the first rotating joint 151 relative to the second rotating joint 152 and maintain the passability and flow rate of the opening 123.

[0059] In other words, the connecting portion connecting the front-end component 120 and the front-end seat 124 is the first connecting portion, and the connecting portion connecting the first rotating joint 151 and the second rotating joint 152 is the second connecting portion. Among them, the stiffness of the first connecting portion is greater than that of the second connecting portion. Exemplarily, the cross-sectional area of the first connecting portion is greater than that of the second connecting portion. Compared with the second connecting portion, the first connecting portion has a higher stiffness and weaker deformation ability. The first connecting portion has a weaker deformation ability than the second connecting portion, and it requires a greater force to deform. Thus, the second resistance is greater than the first resistance. This setting can realize preferentially rotating the first rotating joint 151 relative to the second rotating joint 152 to maintain the passability and flow rate of the opening 123.

[0060] Preferably, when the active bending section 150 is in a straight state, the portions of the first rotating joint 151 and the second rotating joint 152 that form the first arc-shaped slit 155 abut against each other. Relative to the second rotating joint 152, the first arc-shaped slit 155 can limit the rotation of the first rotating joint 151 in the direction approaching the first side 160, but does not limit the rotation of the first rotating joint 151 in the direction away from the first side 160. When the insertion portion 100 needs to rotate towards the first side 160, this setting can cause the front-end assembly 120 to rotate, preventing the first rotating joint 151 from rotating relative to the second rotating joint 152 and avoiding interference of the first side 160 with the area change of the opening 123, effectively improving the use effect.

[0061] Exemplarily, please refer to Figure 12 , the groove width of the first arc-shaped slit 155 is smaller than that of the first arc-shaped groove 153. When it is necessary to control the rotation of the insertion portion 100 towards the third side 180, the groove walls forming the first arc-shaped slit 155 separate, so that the groove walls forming the second arc-shaped groove 154 converge, realizing the bending setting of the first rotating joint 151 relative to the second rotating joint 152 towards the third side 180. However, when it is necessary to control the rotation of the insertion portion 100 towards the first side 160, the groove walls forming the first arc-shaped slit 155 quickly abut against each other, and it is difficult for the first rotating joint 151 to rotate relative to the second rotating joint 152 towards the first side 160. During this period, the groove walls forming the first arc-shaped groove 153 converge with each other, realizing the deflection setting of the front-end assembly 120 towards the first side 160 of the first rotating joint 151. This setting can drive the front-end assembly 120 to rotate towards the first side 160 to increase the area of the opening 123 and avoid interference of the first arc-shaped slit 155 with the rotation of the front-end assembly 120.

[0062] To achieve the above object and other related objects, the present application provides an endoscope 1, please refer to Figure 1 and Figure 12 , including the insertion portion 100 and the negative pressure suction valve 200 as described above, and the negative pressure suction valve 200 is communicated with the first channel 111. The endoscope 1 can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, an oral endoscope, a laryngoscope, a vaginoscope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not specifically limit the type of the endoscope 1.

[0063] In this embodiment, the negative pressure suction valve 200 is connected to the first driving mechanism 130 in a transmission manner. When the negative pressure suction valve 200 is opened, the first driving mechanism 130 drives the front end assembly 120 to deflect toward the first side 160 of the insertion portion 100. The front end assembly 120 is deflected toward the first side 160 of the insertion portion 100, so that the direction of the opening 123 is deflected, and the cross-sectional area of ​​the opening 123 is rapidly increased. When the negative pressure suction valve 200 injects a flushing liquid to clean the observation area or assist in diagnosis, the enlarged opening 123 can also accelerate the injection speed of the medium and improve the operating efficiency. In other words, the negative pressure suction valve 200 is started and set, and the state of the front end assembly 120 and the opening 123 can be automatically and synchronously adjusted to ensure that the process of suctioning or injecting the medium is faster and more efficient, simplify the operating steps, and improve the injection efficiency or suction efficiency of the insertion portion 100.

[0064] In a more specific embodiment, the negative pressure suction valve 200 is provided with a transmission member 210, and the transmission member 210 is connected to the first drive mechanism 130. When the negative pressure suction valve 200 is opened, the transmission member 210 drives the first drive mechanism 130, and the first drive mechanism 130 drives the front end assembly 120 to synchronously increase the flow rate of the opening 123. Exemplarily, the negative pressure suction valve 200 has a valve body, and the valve body is slidably arranged relative to the operating part 500 of the endoscope 1. Medical staff need to press the valve body to open the negative pressure suction valve 200. The transmission member 210 is connected to the valve body. While the valve body is pressed, the first drive mechanism 130 is also driven by the transmission member 210 to achieve synchronous movement of the negative pressure suction valve 200 and the front end assembly 120.

[0065] In another embodiment, see Figure 13 as well as Figure 14 The endoscope 1 may further include a traction wheel 400 and a traction rope 300, the traction rope 300 and the traction wheel 400 are connected to each other, and the traction rope 300 is suitable for driving the insertion part 100 to deflect. The medical staff turns the traction wheel 400, and the traction wheel 400 drives the traction rope 300, and the traction rope 300 is suitable for driving the insertion part 100 to deflect. The distal end of the insertion part 100 can be rotated so that the insertion part 100 can enter a curved cavity.

[0066] The first driving mechanism 130 is a traction rope 300, and the traction rope 300 is connected to the traction wheel 400. The first driving mechanism 130 can drive the insertion portion 100 to deflect toward the first side 160 or toward the third side 180. In addition, the medical staff can directly turn the traction wheel 400 to operate the first driving mechanism 130 to deflect the front end assembly 120. This setting can integrate the function of the first driving mechanism 130 on the traction rope 300, reduce the components of the endoscope 1, and improve the assembly efficiency of the endoscope 1.

[0067] See alsoFigure 14 Moreover, the first driving mechanism 130 may further include a locking portion 131. The locking portion 131 may be an elastic piece, a rack, etc. Exemplarily, the traction wheel 400 may be a gear. The locking portion 131 has teeth meshing with the traction wheel 400, so the locking portion 131 can mesh with the traction wheel 400. When the negative pressure suction valve 200 is opened, the locking portion 131 can lock the traction wheel 400. When the negative pressure suction valve 200 is closed, the locking portion 131 can release the traction wheel 400. Exemplarily, the negative pressure suction valve 200 has a valve body which is slidably arranged relative to the operation portion 500 of the endoscope 1. Medical staff need to press the valve body to open the negative pressure suction valve 200. The locking portion 131 locks the traction wheel 400 simultaneously to prevent the traction wheel 400 from rotating and affecting the deflection of the insertion portion 100. The transmission member 210 is connected to the valve body, and the traction rope 300 is located in the moving path of the transmission member 210. When the valve body is pressed, the traction rope 300 will also be driven by the transmission member 210 to achieve the synchronous movement of the negative pressure suction valve 200 and the front-end assembly 120.

[0068] The technical solution adopted by the present invention can achieve the following beneficial effects: The device mounting portion 121 can be used to mount devices such as cameras, lighting lamps, etc. The insertion portion 100 can be inserted into the patient's body until the affected area. In the insertion portion 100, the first channel 111 and the second channel 122 can perform suction work or insert medical devices. During this period, the driving mechanism can drive the device mounting portion 121 to deflect to increase the area of the opening 123 in the axial direction of the insertion portion 100. This setting can increase the area at the opening 123, reduce the influence of the device mounting portion 121 and the camera module 125 mounted on the device mounting portion 121 on the cross-sectional area of the first channel 111, improve the flow rate of the insertion portion 100, and improve the use effect and working efficiency of the insertion portion 100. In addition, the first channel 111 can insert medical devices with a larger volume, improve the adaptability of the insertion portion 100, and expand the usage scenarios of the insertion portion 100.

[0069] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0070] In addition, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0071] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An insertion portion, characterized in that: The insertion portion is used for an endoscope, and the insertion portion includes: An insertion tube, the insertion tube having a first passage, the first passage penetrating from the proximal end of the insertion tube to the distal end of the insertion tube, the insertion tube comprising a first rotating joint and a second rotating joint, the second rotating joint being rotatably connected to the proximal end of the first rotating joint; a front end assembly, connected to the distal end of the first rotating joint, the front end assembly having a device mounting portion, a second channel penetrating the front end assembly, and an opening arranged on the distal side wall of the second channel, the device mounting portion partially blocks the first channel, the second channel is connected to the first channel, the opening is located on a side of the second channel away from the device mounting portion, and the bottom of the opening extends to the proximal end of the device mounting portion, the front end assembly is rotationally matched with the distal end of the insertion tube; and a first driving mechanism, the first driving mechanism is connected to the front end assembly, and the first driving mechanism is used to drive the front end assembly to deflect toward a first side of the insertion tube, the first side of the insertion tube being a side of the insertion tube away from the opening; Among them, when the insertion portion is straightened, the resistance of the first rotating joint to rotate toward the third side of the insertion tube relative to the second rotating joint is a first resistance, the third side and the first side are opposite sides of the insertion tube, and the resistance of the front end component to rotate toward the third side of the insertion tube relative to the first rotating joint is a second resistance, and the second resistance is greater than the first resistance.

2. The insertion portion according to claim 1, characterized in that: The front end assembly and the insertion tube are rotationally matched and have a rotation axis, and the bottom of the opening extends to a side of the rotation axis adjacent to the proximal end of the insertion portion; And / or, the insertion portion further includes a second driving mechanism, the second driving mechanism is connected to the front end assembly, and the second driving mechanism is used to drive the front end assembly to deflect toward a side of the insertion tube close to the opening.

3. The insertion portion according to claim 1, characterized in that: The front end component can switch between a first position and a second position. When the front end component is in the first position, the front end component is coaxial with the insertion tube, and the front end component is rotationally limited with the insertion portion. When the front end component is in the second position, the front end component is deflected relative to the insertion tube to the side of the insertion tube away from the opening.

4. The insertion portion according to claim 1, characterized in that: The insertion tube also includes an active bending section, which is used to deflect toward the first side and / or second side of the insertion portion, the first side being one side of a first radial direction of the insertion tube, and the second side being one side of a second radial direction of the insertion tube, the first radial direction being perpendicular to the second radial direction.

5. The insertion portion according to claim 4, characterized in that: The first driving mechanism is connected to the active bending section, and the first driving mechanism drives the active bending section to deflect toward the first side or the second side.

6. The insertion portion according to claim 5, characterized in that The front end assembly includes a front end seat, the front end seat and the active bending section are an integral structure, a first arc groove is arranged between the first rotating joint and the front end assembly, the first arc groove is arranged on the first side of the active bending section, and the first arc groove extends along the circumference of the insertion portion; A second arcuate groove and a first arcuate slit are arranged between the first rotating joint and the second rotating joint, the second arcuate groove is arranged on the third side of the active bending section, the first arcuate slit is arranged on the first side of the active bending section, and the first arcuate slit and the second arcuate groove are distributed along the circumference of the insertion portion; The connecting part connecting the front end assembly and the front end seat is the first connecting part, and the connecting part connecting the first rotating joint and the second rotating joint is the second connecting part. The stiffness of the first connecting part is greater than the stiffness of the second connecting part. When the active bending section is in a straight state, the first rotating joint and the second rotating joint form the first arc-shaped cut part and stop against each other.

7. An endoscope, characterized in that: include: The insertion portion according to any one of claims 1 to 6; and a negative pressure suction valve, wherein the negative pressure suction valve is communicated with the first channel.

8. The endoscope according to claim 7, characterized in that: The negative pressure suction valve is in transmission connection with the first driving mechanism. When the negative pressure suction valve is opened, the first driving mechanism drives the front end assembly to deflect toward the first side of the insertion portion.

9. The endoscope according to claim 8, characterized in that The endoscope also includes a traction wheel, the first driving mechanism is a traction rope suitable for driving the insertion part to deflect, the traction rope is connected to the traction wheel, and the first driving mechanism also includes a locking part, when the negative pressure suction valve is opened, the locking part can lock the traction wheel, when the negative pressure suction valve is closed, the locking part can release the traction wheel.

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