A lower handle device and an endoscope.

Abstract

This application provides a lower handle device and an endoscope. The lower handle device includes a lower handle body, a support base, multiple connecting tubes, and a traction rope module. The lower handle body has a sliding groove. The support base is installed on the lower handle body, and the traction rope module is installed on the lower handle body and located on the outer periphery of the support base. The traction rope module includes a slider, a first adjusting member, and a traction rope. The slider is slidably connected to the sliding groove and can slide in the vertical direction. The slider has a first docking part for docking with the push-pull rod of the external upper handle device. The slider is elastically movable relative to the lower sidewall of the sliding groove. The first adjusting member is adjustablely connected to the slider and its position is adjusted relative to the slider. The traction rope is connected to the first adjusting member and adjusts with the position adjustment of the first adjusting member, so as to facilitate small-distance adjustment through the first adjusting member, thereby facilitating fine adjustment of the traction rope and improving the adjustment accuracy of the lower handle device.

Description

Technical Field

[0001] This utility model relates to the technical field of endoscope equipment, and in particular to a lower handle device and an endoscope device. Background Technology

[0002] With the development of technology, endoscopes are optical instruments, and the lower handle device is an integral part of them. In existing technology, the lower handle device includes a lower handle body, a support base, multiple connecting tubes, a slider, and a traction rope. The support base is mounted on the lower handle body, the multiple connecting tubes pass through the lower handle body, the slider is slidably connected to the lower handle body and used to connect to an external upper handle device, and the traction rope is connected to the slider. However, this design only allows for large-distance adjustments and cannot perform fine adjustments, resulting in poor adjustment accuracy of existing lower handle devices. Utility Model Content

[0003] The purpose of this utility model is to provide a lower handle device and an endoscope. The lower handle body is provided with a sliding groove; a support base is installed on the lower handle body, and the support base is provided with at least two of the following: a suction tube inlet, an air inlet, and a water inlet; multiple connecting tubes pass through the lower handle body and are used to connect with at least two of the following: a suction tube inlet, an air inlet, and a water inlet; a traction rope module is installed on the lower handle body and is located on the outer periphery of the support base; the traction rope module includes a slider, a first adjusting member, and a traction rope. The slider is slidably connected to the sliding groove and can slide in the vertical direction; the slider is provided with a first docking part, which is used to connect with the push-pull rod of the external upper handle device; the slider is elastically movable relative to the lower sidewall of the sliding groove; the first adjusting member is adjustablely connected to the slider and its position is adjusted relative to the slider; the traction rope is connected to the first adjusting member and is adjusted with the position adjustment of the first adjusting member, so as to facilitate small-distance adjustment through the first adjusting member, thereby facilitating fine adjustment of the traction rope and improving the adjustment accuracy of the lower handle device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lower handle device, applied to an endoscope; the lower handle device includes:

[0005] The lower handle body is provided with a sliding groove;

[0006] A support base is installed on the lower handle body, and the support base is provided with at least two of the following: a suction tube inlet, an air inlet, and a water inlet;

[0007] Multiple connecting pipes are inserted through the lower handle body and used to connect to at least two of the suction tube inlet, the air inlet, and the water inlet;

[0008] A traction rope module is installed on the lower handle body and located on the outer periphery of the support base. The traction rope module includes a slider, a first adjusting member, and a traction rope. The slider is slidably connected to the sliding groove and can slide in the vertical direction. The slider has a first docking part for docking with the push-pull rod of the external upper handle device. The slider is elastically movable relative to the lower sidewall of the sliding groove. The first adjusting member is adjustablely connected to the slider and its position is adjusted relative to the slider. The traction rope is connected to the first adjusting member and adjusts as the position of the first adjusting member is adjusted.

[0009] Optionally, the lower handle body is connected to a soft rubber component, which has a through hole; the endoscope device includes a third nut and a third stud; the third stud has a hollow structure; the third stud is connected to the end of the lower handle body; the third stud is connected to the third nut;

[0010] The third stud is sealed to the lower handle body by a sealing ring. Multiple sealing rings are provided, and the multiple sealing rings are distributed between the third stud and the third nut.

[0011] The through hole is used for the corresponding connecting pipe to pass through, and the connecting pipe is used to be inserted into the suction pipe inlet, the air inlet, or the water inlet;

[0012] The endoscopic device also includes an insertion tube through which a soft rubber component passes and through which various connecting tubes pass; one end of the insertion tube is sealed to a third stud.

[0013] The slider is provided with a second docking portion, which is disposed on one side of the first docking portion;

[0014] The first adjusting member engages with the second docking portion and rotates relative to the second docking portion to adjust the position of the first adjusting member relative to the slider.

[0015] Optionally, the second mating portion is a first threaded hole, and the first adjusting member is a first stud, which is screwed to the second mating portion;

[0016] The traction rope is located on the side wall of the first adjusting member facing away from the slider and is fixedly connected to the first adjusting member.

[0017] Optionally, the first adjusting member is provided with a first through hole for the traction rope to pass through; one end of the traction rope is received in the first through hole;

[0018] The peripheral sidewall of the traction rope is fixedly connected to the first adjusting member;

[0019] The traction rope is connected to the middle position of the first adjusting member, and the position of the traction rope is adjusted as the first adjusting member rotates relative to the first adjusting member.

[0020] Optionally, the lower handle device further includes a fixing seat and a spring tube, the fixing seat being installed on the lower handle body and located on the lower side of the lower handle body;

[0021] The spring tube is connected to the fixed base by a second stud, and the fixed base is connected to a nut, which is threaded to the second stud.

[0022] The spring tube is connected to the second stud and is located below the second stud.

[0023] Optionally, the spring tube is fixedly connected to the second stud; the traction rope passes through the spring tube.

[0024] Optionally, the slider is provided with a guide arm, which passes through a sub-guide groove in the sliding groove, so that the slider slides relative to the sliding groove under the guidance of the guide arm.

[0025] A spring is provided between the slider and the lower side wall of the sliding groove, and the two ends of the spring elastically contact the slider and the lower side wall of the sliding groove, respectively.

[0026] Optionally, the first docking part is a spherical connecting groove, and is spherically connected to the push-pull rod of the external upper handle device.

[0027] Optionally, the lower handle device also includes a housing, the lower handle body being located inside the housing and fixedly connected to the housing.

[0028] To achieve the above objectives, this utility model provides the following technical solution: an endoscope device, including the aforementioned lower handle device.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] This utility model provides a lower handle device and an endoscope. The lower handle body has a sliding groove; a support base is installed on the lower handle body, and the support base has at least two of the following: a suction tube inlet, an air inlet, and a water inlet; multiple connecting tubes pass through the lower handle body and are used to connect with at least two of the following: a suction tube inlet, an air inlet, and a water inlet; a traction rope module is installed on the lower handle body and is located on the outer periphery of the support base; the traction rope module includes a slider, a first adjusting member, and a traction rope. The slider is slidably connected to the sliding groove and can slide in the vertical direction; the slider has a first docking part for docking with the push-pull rod of the external upper handle device; the slider is elastically movable relative to the lower sidewall of the sliding groove; the first adjusting member is adjustablely connected to the slider and its position is adjusted relative to the slider; the traction rope is connected to the first adjusting member and is adjusted with the position adjustment of the first adjusting member, so as to facilitate small-distance adjustment through the first adjusting member, thereby facilitating fine adjustment of the traction rope and improving the adjustment accuracy of the lower handle device. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0033] Figure 1 A schematic diagram of the lower handle device according to an embodiment of this application is shown.

[0034] Figure 2 A schematic diagram of the internal structure of the lower handle device according to an embodiment of this application is shown.

[0035] Figure 3 A cross-sectional view of the internal structure of the lower handle device according to an embodiment of this application is shown.

[0036] Figure 4 An exploded view of the internal structure of the lower handle device according to an embodiment of this application is shown.

[0037] Figure 5 A schematic diagram of the traction rope module of the lower handle device according to an embodiment of this application is shown.

[0038] Figure 6 A schematic diagram showing the connection between the spring tube and the fixed base of the traction rope module of the lower handle device according to an embodiment of this application is shown.

[0039] Figure 7A schematic diagram of the connection of the soft rubber component of the lower handle device according to an embodiment of this application is shown.

[0040] Figure Labels

[0041] 100. Lower handle device;

[0042] 10. Lower handle body; 10a. Sliding groove;

[0043] 20. Support base; 20a. Suction tube inlet; 20b. Air inlet; 20c. Water inlet;

[0044] 30. Takeover;

[0045] 40. Traction rope module; 41. Slider; 411. First docking part; 412. Second docking part; 413. Guide arm; 42. First adjusting component; 42a. First through hole; 43. Traction rope; 44. Spring;

[0046] 50. Fixture;

[0047] 60. Bourdon tube;

[0048] 70. Outer shell; 80. Soft rubber part; 81. Third nut; 82. Third stud; 83. Sealing ring; 84. Insert tube. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0050] Please refer to the attached document. Figures 1-7 This application provides a lower handle device 100, which is part of an endoscope device and is used for fine adjustment of the traction rope 43.

[0051] Please refer to the attached document. Figures 1-7In this embodiment, the lower handle device 100 includes a lower handle body 10, a support base 20, multiple connecting pipes 30, and a traction rope module 40. The lower handle body 10 is provided with a sliding groove 10a; the support base 20 is installed on the lower handle body 10 and is provided with at least two of the following: a suction tube inlet 20a, an air inlet 20b, and a water inlet 20c; the multiple connecting pipes 30 pass through the lower handle body 10 and are used to connect with at least two of the following: a suction tube inlet 20a, an air inlet 20b, and a water inlet 20c; the traction rope module 40 is installed on the lower handle body 10 and is located on the outer periphery of the support base 20; the traction rope module 40 includes a slider 41 and a first adjusting member. The slider 41 is slidably connected to the sliding groove 10a and can slide in the vertical direction. The slider 41 is provided with a first docking part 411 for docking with the push-pull rod of the upper handle device. The slider 41 is elastically movable relative to the lower side wall of the sliding groove 10a. The first adjusting member 42 is adjustablely connected to the slider 41 and is adjusted relative to the slider 41. The traction rope 43 is connected to the first adjusting member 42 and is adjusted with the position adjustment of the first adjusting member 42, so as to facilitate small-distance adjustment through the first adjusting member 42, thereby facilitating fine adjustment of the traction rope 43 and improving the adjustment accuracy of the lower handle device 100.

[0052] Please refer to the attached document. Figures 1-7 In this embodiment of the application, the lower handle body 10 is provided with a sliding groove 10a, which extends in the vertical direction.

[0053] The support base 20 is disposed on the upper side of the lower handle body 10. The support base 20 is installed on the lower handle body 10 so that the support base 20 is fixed on the upper side of the lower handle body 10. The support base 20 is provided with at least two of the following: suction tube inlet 20a, air inlet 20b, and water inlet 20c.

[0054] Multiple connecting pipes 30 are disposed inside the lower handle body 10. The multiple connecting pipes 30 pass through the lower handle body 10 and are used to connect to at least two of the suction tube inlet 20a, air inlet 20b, and water inlet 20c, so that the multiple connecting pipes 30 can be connected to at least two of the suction tube inlet 20a, air inlet 20b, and water inlet 20c respectively. This allows the multiple connecting pipes 30 to be sealed and connected to the suction tube plug, air inlet plug, and water inlet plug of the upper handle device outside through at least two of the suction tube inlet 20a, air inlet 20b, and water inlet 20c, so that the suction tube plug, air inlet plug, and water inlet plug can be connected to the suction tube inlet 22a, air inlet 22b, and water inlet 22c respectively through multiple pipes. Optionally, the suction tube inlet 22a, the air inlet 22b, and the water inlet 22c are made of soft rubber, while the suction tube plug, the air inlet plug, and the water inlet plug are made of rigid material. The suction tube plug, the air inlet plug, and the water inlet plug are connected to the suction tube inlet 22a, the air inlet 22b, and the water inlet 22c by plugging or abutting, respectively, and all are sealed by interference fit to prevent water and air leakage.

[0055] Additionally, the lower handle body 10 is connected to a soft rubber component 80, which has a through hole; the endoscope device includes a third nut 81 and a third stud 82; the third stud 82 has a hollow structure; the third stud 82 is connected to the end of the lower handle body 10; the third stud 82 is connected to the third nut 81; the third stud 82 is sealed to the lower handle body 10 by a sealing ring 28, and multiple sealing rings 83 are provided, distributed between the third stud 82 and the third nut 81; the through hole is used for the corresponding connecting pipe to pass through, which is used to be inserted into the suction tube inlet, air inlet, or water inlet;

[0056] The endoscopic device also includes an insertion tube 84 through which a soft rubber part 80 passes and through which various connecting tubes pass; one end of the insertion tube 84 is sealed to a third stud 82, which realizes the convergence of the insertion tube 84 and various connecting tubes, so as to facilitate insertion into the user's body through the insertion tube 84.

[0057] The traction rope module 40 is installed on the lower handle body 10 and located on the outer periphery of the support base 20. The traction rope module 40 includes a slider 41, a first adjusting member 42, and a traction rope 43. The slider 41 is slidably connected to the sliding groove 10a and can slide in the vertical direction to adjust the position of the slider 41 relative to the sliding groove 10a, thereby facilitating large-distance adjustment of the slider 41. The slider 41 is provided with a first docking part 411, which is used to dock with the push-pull rod of the external upper handle device, so that the slider 41 can pass through the first docking part. 411 connects to the push-pull rod of the upper handle device; the slider 41 moves elastically relative to the lower side wall of the sliding groove 10a so that the slider 41 can automatically reset under elastic action; the first adjusting member 42 is adjustablely connected to the slider 41 and adjusts its position relative to the slider 41; the traction rope 43 is connected to the first adjusting member 42 and adjusts with the position adjustment of the first adjusting member 42 so that small distance adjustment can be made through the first adjusting member 42, thereby facilitating fine adjustment of the traction rope 43 and improving the adjustment accuracy of the lower handle device 100.

[0058] Please refer to the attached document. Figures 1-5 In this embodiment, the slider 41 is provided with a second docking part 412, which is disposed below the first docking part 411; the first adjusting member 42 docks with the second docking part 412 and rotates relative to the second docking part 412 to adjust the position of the first adjusting member 42 relative to the slider 41, so that the first adjusting member 42 can be adjusted relative to the slider 41 through the second docking part 412. The small distance adjustment by the first adjusting member 42 facilitates the fine adjustment of the traction rope 43 and improves the adjustment accuracy of the lower handle device 100.

[0059] Please refer to the attached document. Figures 1-5 In this embodiment, the second mating portion 412 is a first threaded hole, and the first adjusting member 42 is a first stud screwed to the second mating portion 412. This allows the first adjusting member 42 to rotate relative to the second mating portion 412 via a threaded connection, facilitating fine adjustment of the first adjusting member 42 during rotation. The traction rope 43 is located on the side wall of the first adjusting member 42 facing away from the slider 41 and is fixedly connected to the first adjusting member 42. The traction rope 43 adjusts as the first adjusting member 42 rotates, enabling fine adjustment of the traction rope 43 and improving the adjustment accuracy of the lower handle device 100.

[0060] Please refer to the attached document. Figures 1-5In this embodiment, the first adjusting member 42 is provided with a first through hole 42a for the traction rope 43 to pass through; one end of the traction rope 43 is received in the first through hole 42a; the peripheral sidewall of the traction rope 43 is fixedly connected to the first adjusting member 42; so that the traction rope 43 can be fixed to the inner side of the first adjusting member 42 by a fixed connection. The traction rope 43 is connected to the middle position of the first adjusting member 42, and the position of the traction rope 43 is adjusted as the first adjusting member 42 rotates relative to the second docking part 412, so as to achieve fine adjustment of the traction rope 43 and improve the adjustment accuracy of the lower handle device 100. Optionally, the traction rope 43 and the first adjusting member 42 are fixedly connected by welding.

[0061] Please refer to the attached document. Figures 1-7 In this embodiment, the lower handle device 100 further includes a fixing seat 50 and a spring tube 60. The fixing seat 50 is installed on the lower handle body 10 and is located on the lower side of the lower handle body 10, so that the fixing seat 50 can be fixed to the lower side of the lower handle body 10. The spring tube 60 is connected to the fixing seat 50 through a second stud. The fixing seat 50 is connected to a nut, and the nut and the second stud are threaded together, so that the second stud can be connected to the fixing seat 50 through the nut. The spring tube 60 is connected to the second stud and is located on the lower side of the second stud, so that the spring tube 60 can be fixed to the second stud, thereby facilitating the connection of the spring tube 60 to the fixing seat 50 through the cooperation of the second stud and the nut.

[0062] Please refer to the attached document. Figures 1-4 In embodiment 6, the spring tube 60 is fixedly connected to the second stud so that the spring tube 60 can be adjusted as the second stud is adjusted; the traction rope 43 passes through the spring tube 60 so that the spring tube 60 can protect the traction rope 43 and prevent the traction rope from being damaged by friction with the external insertion tube or the external water pipe when the traction rope is pulled.

[0063] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the slider 41 is provided with a guide arm 413, which passes through a sub-guide groove in the sliding groove 10a, so that the slider 41 slides relative to the sliding groove 10a under the guidance of the guide arm 413, so that the slider 41 slides only along the extension direction of the sliding groove 10a, avoiding the slider 41 from deviating relative to the sliding groove 10a, and improving the smoothness of the slider 41 sliding relative to the sliding groove 10a.

[0064] A spring 44 is provided between the slider 41 and the lower side wall of the sliding groove 10a. The spring 44 is arranged in the vertical direction. The two ends of the spring 44 elastically contact the slider 41 and the lower side wall of the sliding groove 10a respectively, so that the slider 41 can move elastically relative to the sliding groove 10a through the spring 44. This makes it easy for the spring 44 to apply an elastic force to the slider 41 upward, so that the slider 41 can be reset upward without pressure.

[0065] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the first docking part 411 is a spherical connecting groove, and it is spherically connected to the push-pull rod of the external upper handle device, which ensures the docking effect between the first docking part 411 and the push-pull rod of the external upper handle device.

[0066] Please refer to the attached document. Figure 1 In this embodiment of the application, the lower handle device 100 is further provided with a housing 70, the lower handle body 10 is located inside the housing 70 and is fixedly connected to the housing 70 so that the housing 70 supports the lower handle body 10, thereby making it easier for the user to grip the housing 70 to operate the lower handle device 100.

[0067] In a second embodiment, an endoscopic device includes a lower handle device 100, which, as part of the endoscopic device, allows for easy visual inspection of living information that cannot be obtained from ordinary observation images. For example, the endoscopic device can highlight lesions and fine structures of blood vessels formed in the mucosal or submucosal layer.

[0068] Compared with the prior art, the beneficial effects of this utility model are:

[0069] This utility model provides a lower handle device 100 and an endoscope. The lower handle body 10 is provided with a sliding groove 10a; a support base 20 is installed on the lower handle body 10, and the support base 20 is provided with at least two of the following: a suction tube inlet 20a, an air inlet 20b, and a water inlet 20c; multiple connecting tubes 30 pass through the lower handle body 10 and are used to connect to at least two of the following: a suction tube inlet 20a, an air inlet 20b, and a water inlet 20c; a traction rope module 40 is installed on the lower handle body 10 and is located on the outer periphery of the support base 20; the traction rope module 40 includes a slider 41, a first adjusting member 42, and a traction rope 43. 1. The slider 41 is slidably connected to the sliding groove 10a and can slide in the vertical direction; the slider 41 is provided with a first docking part 411, which is used to dock with the push-pull rod of the upper handle device outside; the slider 41 is elastically movable relative to the lower side wall of the sliding groove 10a; the first adjusting member 42 is adjustablely connected to the slider 41 and is adjusted relative to the slider 41; the traction rope 43 is connected to the first adjusting member 42 and is adjusted with the position adjustment of the first adjusting member 42, so as to facilitate small-distance adjustment through the first adjusting member 42, thereby facilitating fine adjustment of the traction rope 43 and improving the adjustment accuracy of the lower handle device 100.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0071] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0072] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A lower handle device, characterized in that, Applied to endoscopic equipment; the lower handle device includes: The lower handle body is provided with a sliding groove; A support base is installed on the lower handle body, and the support base is provided with at least two of the following: a suction tube inlet, an air inlet, and a water inlet; Multiple connecting pipes are inserted through the lower handle body and used to connect to at least two of the suction tube inlet, the air inlet, and the water inlet; A traction rope module is installed on the lower handle body and located on the outer periphery of the support base. The traction rope module includes a slider, a first adjusting member, and a traction rope. The slider is slidably connected to the sliding groove and can slide in the vertical direction. The slider has a first docking part for docking with the push-pull rod of the external upper handle device. The slider is elastically movable relative to the lower sidewall of the sliding groove. The first adjusting member is adjustablely connected to the slider and its position is adjusted relative to the slider. The traction rope is connected to the first adjusting member and adjusts as the position of the first adjusting member is adjusted.

2. The lower handle device according to claim 1, characterized in that, The lower handle body is connected to a soft rubber component, which has a through hole; the endoscope device includes a third nut and a third stud; the third stud has a hollow structure; the third stud is connected to the end of the lower handle body; the third stud is connected to the third nut; The third stud is sealed to the lower handle body by a sealing ring. Multiple sealing rings are provided, and the multiple sealing rings are distributed between the third stud and the third nut. The through hole is used for the corresponding connecting pipe to pass through, and the connecting pipe is used to be inserted into the suction pipe inlet, the air inlet, or the water inlet; The endoscopic device also includes an insertion tube through which a soft rubber component passes and through which various connecting tubes pass; one end of the insertion tube is sealed to a third stud. The slider is provided with a second docking portion, which is disposed on one side of the first docking portion; The first adjusting member engages with the second docking portion and rotates relative to the second docking portion to adjust the position of the first adjusting member relative to the slider.

3. The lower handle device according to claim 2, characterized in that, The second mating part is a first threaded hole, and the first adjusting member is a first stud, which is screwed to the second mating part; The traction rope is located on the side wall of the first adjusting member facing away from the slider and is fixedly connected to the first adjusting member.

4. The lower handle device according to claim 3, characterized in that, The first adjusting member is provided with a first through hole for the traction rope to pass through; one end of the traction rope is received in the first through hole; The peripheral sidewall of the traction rope is fixedly connected to the first adjusting member; The traction rope is connected to the middle position of the first adjusting member, and the position of the traction rope is adjusted as the first adjusting member rotates relative to the first adjusting member.

5. The lower handle device according to claim 4, characterized in that, The lower handle device also includes a fixing seat and a spring tube. The fixing seat is installed on the lower handle body and is located on the lower side of the lower handle body. The spring tube is connected to the fixed base by a second stud, and the fixed base is connected to a nut, which is threaded to the second stud. The spring tube is connected to the second stud and is located below the second stud.

6. The lower handle device according to claim 5, characterized in that, The spring tube is fixedly connected to the second stud; the traction rope passes through the spring tube.

7. The lower handle device according to claim 2, characterized in that, The slider is provided with a guide arm, which passes through a sub-guide groove in the sliding groove, so that the slider slides relative to the sliding groove under the guidance of the guide arm. A spring is provided between the slider and the lower side wall of the sliding groove, and the two ends of the spring elastically contact the slider and the lower side wall of the sliding groove, respectively.

8. The lower handle device according to claim 2, characterized in that, The first docking part is a spherical connecting groove, and it is spherically connected to the push-pull rod of the external upper handle device.

9. The lower handle device according to claim 1, characterized in that, The lower handle device also has a housing, the lower handle body is located inside the housing and is fixedly connected to the housing.

10. An endoscopic device, characterized in that, Includes the lower handle device as described in any one of claims 1 to 9.

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