Operating part and endoscope

Abstract

The embodiment of the invention provides an operation part and an endoscope. The operation part comprises a shell, a driving mechanism, a pull wire and a guide piece. A sliding groove is formed in the shell. Part of the driving mechanism and part of the pull wire are located in the sliding groove. The guiding piece is fixed to the sliding groove, the traction line comprises a first traction section, and the first traction section penetrates through the driving mechanism and the part, located outside the driving mechanism, of the sliding groove. The guiding piece is provided with a guiding channel. One end of the pull wire is connected with a forceps lifting device of the endoscope, and the other end of the pull wire penetrates through the guide channel and is connected with the driving mechanism. The driving mechanism can drive the pull wire to move relative to the guide piece and the sliding groove so as to achieve lifting and resetting of the clamp lifting device. The guide channel wraps at least part of the first traction section. According to the operation part provided by the embodiment of the invention, the guide channel can provide structural limitation on the movement of the pull wire relative to the chute, so that the probability that the pull wire is arched or bent is reduced, and the operation reliability of the operation part is improved.

Description

Technical Field

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

[0002] An endoscope generally includes an insertion portion and an operating portion. The insertion portion enters the human body, and a forceps elevator is provided at one end of the insertion portion away from the operating portion. The operating portion is located outside the human body for an operator to operate and control the forceps elevator located inside the human body.

[0003] In related technologies, generally, a traction wire is driven by the operating portion of the endoscope to pull and reset the forceps elevator. However, when the traction wire is reset, it is prone to be bent and deformed under force, thus affecting the control of the operating portion over the forceps elevator. Summary of the Invention

[0004] In view of this, embodiments of the present application are expected to provide an operating portion and an endoscope to solve the problem that the traction wire is prone to be bent and deformed under force when being reset, thus affecting the control of the operating portion over the forceps elevator.

[0005] To achieve the above object, one aspect of the embodiments of the present application provides an operating portion, including:

[0006] A housing, formed with a sliding groove;

[0007] A driving mechanism;

[0008] A traction wire, a part of the driving mechanism is located in the sliding groove, the traction wire includes a first traction segment, and the first traction segment passes through the driving mechanism and the part of the sliding groove located outside the driving mechanism;

[0009] A guiding member, the guiding member is fixed to the sliding groove, the guiding member has a guiding channel, one end of the traction wire is used to connect with the forceps elevator of the endoscope, the other end passes through the guiding channel and is connected with the driving mechanism, and the driving mechanism can drive the traction wire to move relative to the guiding member and the sliding groove to realize the lifting and resetting of the forceps elevator;

[0010] The guiding channel wraps at least part of the outside of the first traction segment.

[0011] In some embodiments, the driving mechanism includes a driving member, a first transmission member, and a second transmission member. The first transmission member and the second transmission member are arranged inside the housing, the driving member is arranged outside the housing, one end of the first transmission member is connected with the driving member, the other end is connected with the second transmission member, at least part of the second transmission member is arranged in the sliding groove, the driving member is used to drive the first transmission member to rotate, and the second transmission member can convert the rotational motion of the first transmission member into a linear motion to drive the traction wire to move relative to the sliding groove.

[0012] In some embodiments, the driving member includes a lever, the first transmission member includes a gear assembly, the second transmission member includes a rack, the lever is connected to the gear assembly, and the gear assembly meshes with the rack.

[0013] In some embodiments, the second transmission member includes a mating end and a connecting end. The mating end is used for mating connection with the first transmission member. The connecting end is provided with a mounting groove, and the traction wire is connected to the connecting end and passes through the mounting groove. When the second transmission member drives the traction wire to move relative to the guiding member, at least part of the guiding member is located in the mounting groove and contacts the groove wall of the mounting groove.

[0014] In some embodiments, the second transmission member and the sliding groove extend in a first direction, and the first direction is parallel to the length direction of the housing or the included angle between the first direction and the length direction of the housing is an acute angle.

[0015] In some embodiments, the guiding member includes a guiding column and a limiting member. At least part of the guiding column is located in the mounting groove, the limiting member is located outside the mounting groove, the guiding channel penetrates through the guiding column and the limiting member, the guiding column extends along the extending direction of the sliding groove, the limiting member extends along a second direction, the housing is formed with a clamping groove, the clamping groove is located on at least one side of the sliding groove along the second direction and is communicated with the sliding groove, and at least one end of the limiting member along the second direction is arranged in the clamping groove to limit the movement of the guiding member relative to the sliding groove, wherein the second direction intersects with the extending direction of the sliding groove.

[0016] In some embodiments, the clamping groove penetrates through at least one side wall of the sliding groove along the second direction;

[0017] Or, at least one side wall of the sliding groove along the second direction is recessed outward to form the clamping groove;

[0018] Or, at least one side wall of the sliding groove along the second direction protrudes inward to form the clamping groove.

[0019] In some embodiments, the operating portion further includes a spring sleeve, the traction wire includes a second traction segment, one end of the second traction segment is connected to the end of the first traction segment far from the driving mechanism, and the other end is used for connecting to the forceps elevator of the endoscope. The spring sleeve is sleeved on at least part of the second traction segment. The housing is provided with a guiding groove, the guiding groove is communicated with the sliding groove, the extending direction of the guiding groove is the same as the extending direction of the sliding groove, and the spring sleeve passes through the guiding groove.

[0020] In some embodiments, the guiding member is an integrally injection-molded structure.

[0021] In some embodiments, the first transmission member and the second transmission member are integrally injection-molded structures.

[0022] Another aspect of the embodiments of the present application provides an endoscope, including:

[0023] An insertion portion;

[0024] And the operation portion described in any one of the above, a forceps elevator is provided at one end of the insertion portion away from the operation portion, and the forceps elevator is connected to the traction wire.

[0025] In the operation portion provided by the embodiments of the present application, with the arrangement of the guiding member, at least the part of the traction wire located in the driving mechanism and in the sliding groove is guided and protected through the guiding channel of the guiding member. The guiding channel can provide structural limitation to the movement of the traction wire relative to the sliding groove, reduce the probability of the traction wire arching or bending, so that the traction wire always moves along a preset trajectory during the movement, and has a low probability of angular deviation when driving the forceps elevator, which is convenient for inserting treatment instruments and improves the operation reliability of the operation portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An exploded schematic view of the operation portion provided by the present application;

[0027] Figure 2 A structural schematic view of the operation portion provided by the present application when the traction pulls the forceps elevator;

[0028] Figure 3 A structural schematic view of the operation portion provided by the present application when resetting the forceps elevator;

[0029] Figure 4 A structural schematic view of the housing provided by the present application;

[0030] Figure 5 A structural schematic view of the second transmission member provided by the present application;

[0031] Figure 6 A structural schematic view of the guiding member provided by the present application.

[0032] DESCRIPTION OF THE REFERENCE NUMERALS

[0033] 10. Operating part; 11. Housing; 11a. Slide groove; 11b. Card slot; 11c. Guide groove; 12. Driving mechanism; 121. Driving part; 121a. Pushing rod; 122. First transmission part; 122a. Gear; 123. Second transmission part; 123a. Rack; 123b. Fitting end; 123c. Connection end; 123d. Installation groove; 13. Traction wire; 131. First traction section; 132. Second traction section; 14. Guide part; 14a. Guide channel; 141. Guide post; 142. Limiting part; 15. Spring sleeve. Detailed implementation manners

[0034] The following further describes in detail the implementation manners of the present application in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0035] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "communicate" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0037] In the related art, usually, the operating part of the endoscope drives the traction wire to pull and reset the forceps lifter. However, when the traction wire is reset, it is easily bent and deformed by force, thus affecting the control of the operating part over the forceps lifter.

[0038] Based on the above situation, in the first aspect of the embodiments of the present application, an operating part 10 for an endoscope is provided. Please refer to Figures 1 to 6, the operation unit 10 includes a housing 11, a driving mechanism 12, a traction wire 13, and a guiding member 14. The housing 11 is formed with a sliding groove 11a. A part of the driving mechanism 12 is located in the sliding groove 11a. The traction wire 13 includes a first traction section 131. The first traction section 131 passes through the driving mechanism 12 and the part of the sliding groove 11a located outside the driving mechanism 12. The guiding member 14 is fixed to the sliding groove 11a. The guiding member 14 has a guiding channel 14a. One end of the traction wire 13 is used to connect to the forceps elevator of the endoscope, and the other end passes through the guiding channel 14a and is connected to the driving mechanism 12. The driving mechanism 12 can drive the traction wire 13 to move relative to the guiding member 14 and the sliding groove 11a to realize the lifting and resetting of the forceps elevator. The guiding channel 14a wraps around at least a part of the first traction section 131.

[0039] Taking the endoscope applied in the medical technology field as an example, the endoscope is used to enter the human body through the natural cavity or surgical stoma of the human body or animal body. With the help of the endoscope, the lesion site of the human body or animal body can be observed, diagnosed, and treated. The forceps elevator is used to help medical staff operate various treatment instruments more conveniently during endoscopy or surgery, such as biopsy forceps, electrocision loops, etc. The endoscope in this application can be a digestive endoscope, for example, it can be a duodenoscope.

[0040] The lifting and resetting functions of the forceps elevator can facilitate fine-tuning the angle and depth of the instrument entering the human body, increase the operation flexibility, reduce the damage to the normal tissues around the lesion site, and at the same time facilitate the protection of the endoscope.

[0041] It should be noted that the sliding groove 11a is used to provide a fixed track to guide the object to move along a preset path. The part of the driving mechanism 12 disposed in the sliding groove 11a can move along the preset path under the guidance of the sliding groove 11a.

[0042] The part of the driving mechanism 12 located in the sliding groove 11a means that a part of the driving mechanism 12 is inside the sliding groove 11a and the other part is outside the sliding groove 11a.

[0043] The traction wire 13 includes a first traction section 131. Among them, the first traction section 131 passes through the driving mechanism 12 and the part of the sliding groove 11a located outside the driving mechanism 12, which means that part of the first traction section 131 is inside the driving mechanism 12 and at the same time there is also part inside the sliding groove 11a outside the driving mechanism 12. The part of the first traction section 131 located inside the driving mechanism 12 can also be located inside the sliding groove 11a at the same time.

[0044] The guiding member 14 is fixed to the sliding groove 11a, which means that there is no relative movement between the guiding member 14 and the sliding groove 11a. When the part of the driving mechanism 12 disposed in the sliding groove 11a moves along the sliding groove 11a, the guiding member 14 will not move relative to the sliding groove 11a.

[0045] The traction line 13 is a structure that can be directly connected to the forceps lifter, and the traction line 13 can be a structure with a certain rigidity such as a wire rope. One end of the traction line 13 is connected to the forceps lifter, and the other end enters the operating part 10 and is connected to the driving mechanism 12 after passing through the guide channel 14a. Under the drive of the driving mechanism 12, the traction line 13 can move relative to the slide groove 11a and the guide member 14, thereby realizing the lifting and resetting of the forceps lifter.

[0046] When the driving mechanism 12 drives the traction wire 13 to move in a direction away from the forceps lifter relative to the guide member 14 and the slide groove 11a, the driving mechanism 12 provides a pulling force for the traction wire 13 to pull the forceps lifter up; when the driving mechanism 12 drives the traction wire 13 to move in a direction close to the forceps lifter relative to the guide member 14 and the slide groove 11a, the driving mechanism 12 provides a thrust for the traction wire 13 to push the forceps lifter to reset.

[0047] It can be understood that the traction wire 13 is a structure with sufficient length but relatively thin. Near the portion where the traction wire 13 is connected to the driving mechanism 12, the traction wire 13 is exposed in the surrounding space without structural restrictions. It is very easy to arch or bend during linear movement, thereby causing angle deviation when driving the forceps lifter, affecting the operation of the endoscope.

[0048] It can be understood that the guide channel 14a can provide structural restrictions on the part of the traction line 13 in the driving mechanism 12 and the slide groove 11a, that is, the first traction section 131, so that the traction line 13 always moves according to the preset trajectory during the movement process, reducing the probability of the traction line 13 being arched or bent in the first traction section 131.

[0049] It should be noted that the guide channel, while providing protection and guidance for the traction line 13 , generates no resistance to the linear movement of the traction line 13 as much as possible.

[0050] Exemplarily, the traction line 13 moves along the extension direction of the slide groove 11 a , and the extension direction of the guide channel 14 a is consistent with the extension direction of the slide groove 11 a .

[0051] It should be noted that the guide channel 14a is wrapped around at least a portion of the first traction segment 131. In this way, no matter to which position the driving mechanism 12 drives the traction line 13 to move, the guide channel 14a can wrap around the first traction segment 131. The first traction segment 131 here can be a partial structure in which the traction line 13 is located in the driving mechanism 12 and in the slide groove 11a, or it can be the entire structure in which the traction line 13 is located in the driving mechanism 12 and in the slide groove 11a.

[0052] Specifically, when the driving mechanism 12 drives the traction line 13 to move relative to the guiding member 14, the positions of the traction line 13 and the driving mechanism 12 relative to the guiding member 14 can change. That is, when the clamp lifter is reset, a relative position change occurs between the guiding member 14, the driving mechanism 12, and the traction line 13. When there is sufficient accommodation space in the driving mechanism 12, at least a part of the guiding member 14 can be located inside the driving mechanism 12, so as to wrap the part of the first traction segment 131 located inside the driving mechanism 12, and also wrap the part of the traction line 13 located outside the driving mechanism 12 and inside the chute 11a. When pulling the clamp lifter to lift, the relative distance between the guiding member 14 and the driving mechanism 12 increases. At this time, at least a part of the guiding member 14 is located outside the driving mechanism 12. The guiding member 14 can either only wrap the part of the first traction segment 131 located outside the driving mechanism 12 and inside the chute 11a, or wrap both the part of the first traction segment 131 located inside the driving mechanism 12 and the part of the traction line 13 located outside the driving mechanism 12 and inside the chute 11a.

[0053] Thus, the guiding channel 14a of the guiding member 14 can at least guide and protect the traction line 13 near the end close to the driving mechanism 12, and improve the situation that the traction line 13 near the end close to the driving mechanism 12 is easily deformed and bent due to the driving mechanism 12 reciprocally lifting and resetting the clamp lifter.

[0054] It should be noted that the specific structure of the driving mechanism 12 is not limited.

[0055] Exemplarily, the driving mechanism 12 can include a gear transmission mechanism or a crank - connecting rod - slider mechanism. When the driving mechanism 12 includes a crank - connecting rod - slider mechanism, the user can drive the connecting rod through the crank, thereby driving the slider to move relative to the chute 11a.

[0056] In the operating part 10 provided by the embodiment of the present application, with the arrangement of the guiding member 14, the guiding channel 14a of the guiding member 14 at least guides and protects the part of the traction line 13 located inside the driving mechanism 12 and inside the chute 11a. The guiding channel 14a can provide structural limitation for the movement of the traction line 13 relative to the chute 11a, reduce the probability of the traction line 13 arching or bending, so that the traction line 13 always moves along a preset trajectory during the movement, and has a low probability of angular deviation when driving the clamp lifter, which is convenient for inserting the treatment instrument and improves the operation reliability of the operating part 10.

[0057] In some embodiments, please refer to Figures 1 to 3, the driving mechanism 12 includes a driving member 121, a first transmission member 122, and a second transmission member 123. The first transmission member 122 and the second transmission member 123 are disposed inside the housing 11. The driving member 121 is disposed outside the housing 11. One end of the first transmission member 122 is connected to the driving member 121, and the other end is connected to the second transmission member 123. At least a part of the second transmission member 123 is disposed in the chute 11a. The driving member 121 is used to drive the first transmission member 122 to rotate. The second transmission member 123 can convert the rotational motion of the first transmission member 122 into a linear motion to drive the traction wire 13 to move relative to the chute 11a.

[0058] The driving member 121 is disposed outside the housing 11, which means that when viewed from the outer surface of the housing 11, the driving member 121 can be directly seen, and the operator can directly apply an external force to the driving member 121 from the outside of the housing 11 to drive the first transmission member 122.

[0059] The second transmission member 123 can convert the rotational motion of the first transmission member 122 into a linear motion to drive the traction wire 13 to move relative to the chute 11a. That is to say, the driving mechanism 12 can drive the first transmission member 122 to rotate, and the second transmission member 123 can convert the rotational motion of the first transmission member 122 into a linear motion, so as to drive the traction wire 13 to move relative to the chute 11a. The second transmission member 123 may have all or part of its structure disposed in the chute 11a. When the second transmission member 123 moves in the direction close to the tong lifter, the entire structure of the second transmission member 123 may be located in the chute 11a. When the second transmission member 123 moves in the direction away from the tong lifter, a small part of the structure of the second transmission member 123 may be located outside the chute 11a. The extending direction of the second transmission member 123 is the same as that of the chute 11a, so that the second transmission member 123 moves linearly along a preset track in the chute 11a.

[0060] In this embodiment, by converting the rotational motion into a linear motion, the operation is simple, and the movement of the second transmission member 123 can be restricted by the chute 11a, increasing the movement reliability of the second transmission member 123. And by driving the traction wire 13 through the second transmission member 123, the transmission reliability can also be increased, making it more convenient for the smooth movement of the traction wire 13.

[0061] In some embodiments, please refer to Figures 1 to 3 and Figure 5 , the driving member 121 includes a lever 121a. The first transmission member 122 includes a gear assembly. The second transmission member 123 includes a rack 123a. The lever 121a is connected to the gear assembly, and the gear assembly meshes with the rack 123a.

[0062] It should be noted that the first transmission member 122 includes a gear assembly, which means that the first transmission member 122 has a gear structure, and the gear can rotate around the center of its corresponding pitch circle. Here, the gear assembly can have only one gear 122a, or can have multiple gears 122a, which is not limited here.

[0063] For example, see Figure 1 , the gear assembly includes a gear 122a.

[0064] Specifically, the gear 122a may only form a part of the gear tooth structure for meshing with other teeth for transmission; the gear 122a may also form a complete circle of gear tooth structure.

[0065] The second transmission member 123 includes a rack 123a, which means that the second transmission member 123 has a structure of the rack 123a. The rack 123a is a special gear with teeth distributed on a bar-shaped body. The tooth profile of the rack 123a is a straight line rather than an involute (a plane for the tooth surface), which is equivalent to a cylindrical gear with an infinite pitch circle radius.

[0066] Here, the user can drive the gear assembly to rotate by toggling the toggle lever 121a, and the gear assembly transmits the driving force to the rack 123a. The rack 123a converts the rotational motion of the gear assembly into linear motion, thereby driving the traction line 13 to move relative to the slide groove 11a. The transmission structure is simpler and more reliable, and the number of transmission components is reduced. At the same time, the engagement of the gear 122a and the rack 123a can improve the transmission accuracy, thereby improving the control accuracy of the operating unit 10 over the forceps lifter.

[0067] For some examples, see Figure 2 , Figure 3 and Figure 5 The second transmission member 123 includes a mating end 123b and a connecting end 123c. The mating end 123b is used to be mated and connected with the first transmission member 122. The connecting end 123c is provided with a mounting groove 123d. The traction line 13 is connected to the connecting end 123c and is passed through the mounting groove 123d. When the second transmission member 123 drives the traction line 13 to move relative to the guide member 14, at least a portion of the guide member 14 is located in the mounting groove 123d and contacts the groove wall of the mounting groove 123d.

[0068] It can be understood that in the embodiment where the first transmission member 122 includes a gear assembly and the second transmission member 123 includes a rack 123a, the mating end 123b is the portion of the rack 123a used for meshing transmission with the gear assembly, and the connecting end 123c is the portion of the rack 123a that is not provided with teeth and is connected to the traction line 13.

[0069] There is no limitation on the connection method between the pulling wire 13 and the connecting end 123c.

[0070] Exemplarily, the traction wire 13 can be connected to the connection end 123c by welding, or the traction wire 13 can be connected to the connection end 123c by snap connection. Of course, the traction wire 13 can also be connected to the connection end 123c through an intermediate structure.

[0071] When the second transmission member 123 drives the traction wire 13 to move relative to the guide member 14, at least a part of the guide member 14 is located in the installation groove 123d and contacts the groove wall of the installation groove 123d. That is to say, during the entire process of the second transmission member 123 sliding along the sliding groove 11a, there is always a structure of the guide member 14 located in the installation groove 123d. At the same time, the groove wall of the installation groove 123d contacts the guide member 14, and the installation groove 123d can cooperate with the guide member 14 to further increase the movement guidance and structural limitation of the traction wire 13. The part of the traction wire 13 located in the installation groove 123d can move along a preset trajectory, further reducing the probability of arching or bending.

[0072] In some embodiments, please refer to Figure 2 , the second transmission member 123 and the sliding groove 11a extend along the first direction.

[0073] In some embodiments, the first direction is parallel to the length direction of the housing 11.

[0074] It should be noted that the dimensions of different components in the three directions of the same absolute coordinate system are different. Generally, according to the dimensions of the object extending in the three directions, the length, width and thickness of the object are determined, where length > width > thickness.

[0075] Both the second transmission member 123 and the sliding groove 11a extend along the first direction. In this way, the sliding direction of the second transmission member 123 relative to the sliding groove 11a is the first direction.

[0076] Exemplarily, the first direction can be the length direction of the second transmission member 123.

[0077] The first direction can be parallel to the length direction of the housing 11. At this time, the extending direction of the second transmission member 123 and the sliding groove 11a, that is, the linear motion direction of the second transmission member 123, is parallel to the length direction of the housing 11. In this way, the included angle between the motion direction of the second transmission member 123 and the length direction of the housing 11 is zero, and there is no need for an inclined arrangement, increasing the convenience of arrangement.

[0078] In some other embodiments, the included angle between the first direction and the length direction of the housing 11 is an acute angle. Please refer to Figure 2, the first direction is a, the length direction of the housing 11 is b, and the angle between the first direction and the length direction of the housing 11 is an acute angle θ. That is, the second transmission member 123 is tilted relative to the length direction of the housing 11, so that the space in the housing 11 can be fully utilized, making the components of the operating portion 10 more compact and reducing the overall size of the operating portion 10.

[0079] In an embodiment where the first transmission member 122 includes a gear 122a and the second transmission member 123 includes a rack 123a, the angle between the extension direction of the rack 123a and the length direction of the housing 11 is an acute angle, that is, while the gear 122a and the rack 123a are meshing, the size of the operating part 10 along the length direction perpendicular to the housing 11 can be reduced, thereby making the structural layout of the operating part 10 more compact.

[0080] For some examples, see Figures 1 to 6 The guide member 14 includes a guide column 141 and a limit member 142. At least a portion of the guide column 141 is located in the mounting groove 123d. The limit member 142 is located outside the mounting groove 123d. The guide channel 14a passes through the guide column 141 and the limit member 142. The guide column 141 extends along the extension direction of the slide groove 11a. The limit member 142 extends along the second direction. The housing 11 is formed with a card slot 11b. The card slot 11b is located on at least one side of the slide groove 11a along the second direction and is connected to the slide groove 11a. At least one end of the limit member 142 along the second direction is arranged in the card slot 11b to limit the movement of the guide member 14 relative to the slide groove 11a. Wherein, the second direction intersects with the extension direction of the slide groove 11a.

[0081] At least part of the guide post 141 is located in the installation groove 123d, and the guide post 141 extends along the extension direction of the slide groove 11a, that is, during the movement of the second transmission member 123, the length of the portion of the guide post 141 located in the installation groove 123d can be changed by the movement of the installation groove 123d relative to the guide post 141. The extension direction of the guide post 141 is consistent with the extension direction of the slide groove 11a, so that the movement of the traction line 13 is guided so that the movement direction of the traction line 13 is consistent with the extension direction of the slide groove 11a.

[0082] The guide channel 14 a penetrates the guide column 141 and the stopper 142 , that is, the traction line 13 passes through the guide column 141 and the stopper 142 .

[0083] The limiting member 142 extends in the second direction, where the second direction intersects with the extending direction of the sliding groove 11a. That is to say, the extending direction of the limiting member 142 can be non-perpendicular or perpendicular to the extending direction of the sliding groove 11a, so that the limiting member 142 can form a limit with the clamping groove 11b along the extending direction of the sliding groove 11a to limit the movement of the guiding member 14 relative to the sliding groove 11a, thereby realizing the fixation of the guiding member 14.

[0084] The clamping groove 11b is located on at least one side of the sliding groove 11a along the second direction. It can be that the clamping groove 11b is located on one side of the sliding groove 11a along the second direction, or it can be that the clamping grooves 11b are provided on both sides of the sliding groove 11a along the second direction. In this case, the clamping grooves 11b on both sides can increase the fixing effect on the limiting member 142 and further reduce the probability of the guiding member 14 coming out.

[0085] Exemplarily, please refer to Figure 4 , the clamping grooves 11b are located on both sides of the sliding groove 11a along the second direction.

[0086] Exemplarily, the housing 11 can also be provided with a stop structure, which can make a stop contact with the limiting member 142 in the thickness direction of the housing 11 after the limiting member 142 is arranged in the clamping groove 11b, further improving the situation of the guiding member 14 coming out of the sliding groove 11a.

[0087] The specific structure of the clamping groove 11b is not limited.

[0088] In some embodiments, please refer to Figure 4 , the clamping groove 11b penetrates at least one side wall of the sliding groove 11a along the second direction.

[0089] In this embodiment, the clamping groove 11b can penetrate one side wall of the sliding groove 11a along the second direction, or can penetrate both side walls of the sliding groove 11a along the second direction; thus, the clamping groove 11b can have sufficient limiting space, and the size of the limiting member 142 can also be larger, which is convenient for forming a better limiting effect.

[0090] In other embodiments, at least one side wall of the sliding groove 11a along the second direction is recessed outward to form the clamping groove 11b. That is to say, at least one side wall of the sliding groove 11a along the second direction is deformed outward in a direction away from the sliding groove 11a to form the clamping groove 11b, and the clamping groove 11b does not penetrate the side wall of the sliding groove 11a along the second direction. In this way, it can be ensured that the limiting member 142 does not exceed the space defined by the sliding groove 11a, and the probability of the limiting member 142 coming into contact and wearing with other structures outside the sliding groove 11a is reduced.

[0091] In some other embodiments, at least one side wall of the sliding groove 11a bulges inwards along the second direction to form a clamping groove 11b. That is to say, at least one side wall of the sliding groove 11a along the second direction extends and bulges towards the center line of the sliding groove 11a along the second direction to form a protruding portion, and at least two protruding portions surround to form the clamping groove 11b. In this way, the size of the limiting member 142 can be smaller, increasing the layout compactness.

[0092] Here, the clamping groove 11b is formed in different ways to limit the guiding member 14 in the first direction.

[0093] In some embodiments, please refer to Figures 1 to 3 , the operating portion 10 further includes a spring sleeve 15. The traction wire 13 includes a second traction section 132. One end of the second traction section 132 is connected to the end of the first traction section 131 away from the driving mechanism 12, and the other end is used to be connected to the forceps elevator of the endoscope. The spring sleeve 15 is sleeved on at least a part of the second traction section 132. The housing 11 is provided with a guiding groove 11c. The guiding groove 11c communicates with the sliding groove 11a. The extending direction of the guiding groove 11c is the same as the extending direction of the sliding groove 11a. The spring sleeve 15 passes through the guiding groove 11c.

[0094] One end of the second traction section 132 is connected to the end of the first traction section 131 away from the driving mechanism 12, and the other end is used to be connected to the forceps elevator of the endoscope. That is to say, the second traction section 132 is the part of the traction wire 13 between the guiding member 14 and the forceps elevator of the endoscope.

[0095] The spring sleeve 15 is sleeved on at least a part of the second traction section 132, which means that the spring sleeve 15 can be completely sleeved outside the second traction section 132, or only sleeved outside a part of the second traction section 132, so as to guide and protect this part of the traction wire 13 and improve the situation that the traction wire 13 is easily deformed and bent by external forces.

[0096] It should be noted that the traction wire 13 can slide along the spring sleeve 15.

[0097] Exemplarily, the spring sleeve 15 is sleeved on the entire second traction section 132. One end of the spring sleeve 15 abuts against the guiding member 14, and the other end abuts against the forceps elevator. In this way, when the traction wire 13 is pulled, it can drive the forceps elevator to rotate, rather than pulling the forceps elevator backward. Therefore, the spring sleeve 15 can play a role of support and guidance.

[0098] Exemplarily, the outer diameter of the spring sleeve 15 is larger than the aperture of the guiding channel 14a. The guiding member 14 can block the spring sleeve 15, so that the spring sleeve 15 cannot enter the sliding groove 11a through the guiding channel 14a of the guiding member 14.

[0099] Thus, by providing a guiding groove 11c in the outer shell 11 that communicates with the sliding groove 11a and has the same extending direction as the sliding groove 11a, after the traction wire 13 led out from the guiding member 14 extends out of the sliding groove 11a, it can first pass through the guiding groove 11c. At the same time, the spring sleeve 15 starts to be sleeved outside the second traction section 132 from the guiding groove 11c, so that the second traction section 132 can be more comprehensively protected. At the same time, the guiding groove 11c can guide the traction wire 13 extending out of the sliding groove 11a to a certain extent, so that the second traction section 132 extending out of the sliding groove 11a will not be subjected to excessive external force, thereby improving the operating feeling of the driving mechanism 12 on the traction wire 13.

[0100] In some embodiments, the guiding member 14 is an integrally injection-molded structure.

[0101] Here, the guiding member 14 being an integrally injection-molded structure can reduce the material cost of the guiding member 14, thereby reducing the production cost of the endoscope.

[0102] In some embodiments, the first transmission member 122 and the second transmission member 123 are integrally injection-molded structures.

[0103] In this way, the material costs of the first transmission member 122 and the second transmission member 123 can be reduced, and the production cost of the endoscope is reduced.

[0104] In the second aspect of the embodiments of the present application, an endoscope is provided. The endoscope includes an insertion portion and the operation portion 10 provided in any embodiment of the present application. A forceps elevator is provided at one end of the insertion portion away from the operation portion 10. The forceps elevator is connected to the traction wire 13.

[0105] For the endoscope provided in the embodiments of the present application, the setting of the guiding member 14 guides and protects at least the part of the traction wire 13 located in the driving mechanism 12 and in the sliding groove 11a through the guiding channel 14a of the guiding member 14. The guiding channel 14a can provide structural limitation to the movement of the traction wire 13 relative to the sliding groove 11a, reduce the probability of the traction wire 13 arching or bending, so that the traction wire 13 always moves along a preset trajectory during the movement process, and has a low probability of angular deviation when driving the forceps elevator, facilitating the insertion of the treatment instrument and improving the operation reliability of the operation portion 10.

[0106] In the description of the present application, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine the different embodiments or examples described in the present application and the features of different embodiments or examples.

[0107] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An operating unit for an endoscope, characterized in that: The operating unit comprises: A housing formed with a slide groove; Driving mechanism; A traction line, a portion of the driving mechanism is located in the chute, the traction line includes a first traction section, the first traction section is passed through the driving mechanism and a portion of the chute located outside the driving mechanism; A guide member, the guide member is fixed to the slide groove, the guide member has a guide channel, one end of the traction line is used to connect with the forceps lifter of the endoscope, and the other end passes through the guide channel and is connected to the driving mechanism, the driving mechanism can drive the traction line to move relative to the guide member and the slide groove to achieve the lifting and resetting of the forceps lifter; The guide channel is wrapped around at least a portion of the first traction section.

2. The operating unit according to claim 1, characterized in that: The driving mechanism includes a driving member, a first transmission member and a second transmission member, the first transmission member and the second transmission member are arranged in the outer shell, the driving member is arranged on the outer side of the outer shell, one end of the first transmission member is connected to the driving member, and the other end is connected to the second transmission member, at least a part of the second transmission member is arranged in the slide groove, the driving member is used to drive the first transmission member to rotate, and the second transmission member can convert the rotational motion of the first transmission member into linear motion to drive the traction line to move relative to the slide groove.

3. The operating unit according to claim 2, characterized in that: The driving member includes a shifting rod, the first transmission member includes a gear assembly, the second transmission member includes a rack, the shifting rod is connected to the gear assembly, and the gear assembly is meshed with the rack.

4. The operating unit according to claim 2, characterized in that: The second transmission member includes a mating end and a connecting end, the mating end is used to mate and connect with the first transmission member, the connecting end is provided with a mounting groove, the traction line is connected to the connecting end and passed through the mounting groove, when the second transmission member drives the traction line to move relative to the guide member, at least a portion of the guide member is located in the mounting groove and contacts with the groove wall of the mounting groove.

5. The operating unit according to claim 2, characterized in that: The second transmission member and the slide groove extend along a first direction, and the first direction is parallel to the length direction of the shell, or the angle between the first direction and the length direction of the shell is an acute angle.

6. The operating unit according to claim 4, characterized in that: The guide member includes a guide column and a limit member, at least a portion of the guide column is located in the mounting groove, the limit member is located outside the mounting groove, the guide channel passes through the guide column and the limit member, the guide column extends along the extension direction of the slide groove, the limit member extends along the second direction, the shell is formed with a slot, the slot is located on at least one side of the slide groove along the second direction and is connected to the slide groove, at least one end of the limit member along the second direction is arranged in the slot to limit the movement of the guide member relative to the slide groove, wherein the second direction intersects with the extension direction of the slide groove.

7. The operating unit according to claim 6, characterized in that: The clamping groove penetrates at least one side wall of the sliding groove along the second direction; Alternatively, at least one side wall of the slide groove along the second direction is recessed outward to form the clamping groove; Alternatively, at least one side wall of the sliding groove along the second direction protrudes inward to form the locking groove.

8. The operating unit according to claim 1, characterized in that: The operating part also includes a spring sleeve, the traction line includes a second traction segment, one end of the second traction segment is connected to one end of the first traction segment away from the driving mechanism, and the other end is used to connect with the lifting device of the endoscope, the spring sleeve is sleeved on at least a portion of the second traction segment, the outer shell is provided with a guide groove, the guide groove is connected to the slide groove, the extension direction of the guide groove is the same as the extension direction of the slide groove, and the spring sleeve is passed through the guide groove.

9. The operating unit according to claim 1, characterized in that: The guide member is an integral injection-molded structure; and / or the first transmission member and the second transmission member are an integral injection-molded structure.

10. An endoscope, characterized in that: include: Insertion part; And the operating part according to any one of claims 1 to 9, wherein a forceps lifter is provided at one end of the insertion part away from the operating part, and the forceps lifter is connected to the traction wire.

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