Shifting assembly, handle, and endoscope

Abstract

The present application relates to the technical field of endoscopes, and specifically discloses a shifting assembly, a handle, and an endoscope. The shifting assembly comprises a shifting rod, a shaft rod, and a metal coating film. An end portion of the shaft rod is provided with an insertion section. The shaft rod is in insertion fit with the shifting rod by means of the insertion section. The metal coating film is located between the shifting rod and the shaft rod, and at least part of the metal coating film covers a side surface of the insertion section. In the above solutions, the outer side of the insertion section at the end portion of the shaft rod is coated with the metal coating film, so that the friction and impact on the shaft rod when the shifting rod rotates can be reduced, reducing the wear on the shaft rod. This ensures the structural integrity of the shaft rod and can effectively avoid the loosening and slipping between the shifting rod and the shaft rod, such that the shaft rod can stably transmit torque to a traction wheel, thereby ensuring the accuracy of posture adjustment of a bending section of the insertion portion of the endoscope.

Description

Toggle assembly, handle and endoscope TECHNICAL FIELD

[0001] The present application relates to the technical field of endoscopes, and in particular to a toggle assembly, a handle and an endoscope. BACKGROUND

[0002] An endoscope comprises an operating handle and an insertion part. In actual operation, a toggle lever on the operating handle is toggled to drive a traction wheel to rotate, so as to adjust the posture of a curved section of the insertion part, thereby adjusting the orientation of a front-end module and realizing functions such as fixed-point observation. In related technologies, the toggle lever and a shaft rod connected to the traction wheel usually form a toggle assembly in a plug-in manner. When the toggle assembly is rotated to transmit a torque to the traction wheel, the toggle lever and the shaft rod often become loose or slip, which results in inaccurate adjustment of the posture of the curved section of the insertion part and difficulty in maintaining the curved posture. SUMMARY

[0003] The present application discloses a toggle assembly, a handle and an endoscope to solve the technical problem of inaccurate adjustment of the posture of the curved section of the insertion part by the toggle assembly in related technologies.

[0004] To solve the above problems, the present application adopts the following technical solutions:

[0005] In a first aspect, the present application provides a toggle assembly, which comprises a toggle lever, a shaft rod and a metal coating film. The shaft rod is provided with a plug-in section at an end thereof. The shaft rod is plug-in matched with the toggle lever through the plug-in section. The metal coating film is located between the toggle lever and the shaft rod, and at least part of the metal coating film covers a side surface of the plug-in section.

[0006] Further, the metal coating film has a part covering an end surface of the plug-in section.

[0007] Further, the part of the metal coating film covering the end surface of the plug-in section surrounds the end surface of the plug-in section.

[0008] Further, along an axial direction of the shaft rod, a cross section of the plug-in section is square-shaped. Along a circumferential direction of the plug-in section, the plug-in section is formed with an arc-shaped transition part at a corner thereof.

[0009] Further, the shaft rod is provided with a chamfer at a junction of an end surface and two adjacent side surfaces thereof.

[0010] Further, the metal coating film is a copper film.

[0011] Further, the plug-in section is further provided with a threaded hole.

[0012] In a second aspect, the application provides a handle, which comprises a shell and the aforementioned toggle assembly, the toggle lever is arranged outside the shell, the shaft is arranged inside the shell, and the toggle lever and the shaft are in plug-in fit.

[0013] Further, part of the toggle lever is embedded in the shell in rotation, and the shaft is in plug-in fit with the part of the toggle lever extending into the shell.

[0014] In a third aspect, the application also provides an endoscope, which comprises the aforementioned handle.

[0015] The technical scheme adopted by the application can achieve the following beneficial effects:

[0016] The toggle assembly, the handle and the endoscope of the application can reduce the friction and impact of the toggle lever on the shaft during rotation by coating a metal film on the outside of the plug-in section at the end of the shaft, reduce the wear of the shaft, ensure the integrity of the shaft structure, effectively avoid the loosening and slipping between the toggle lever and the shaft, and enable the shaft to stably transmit torque to the traction wheel, thereby ensuring the accuracy of the posture adjustment of the curved section of the insertion part of the endoscope. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0018] Fig. 1 is a structural schematic view of a toggle lever according to an embodiment of the application;

[0019] Fig. 2 is a structural schematic view of a shaft according to an embodiment of the application;

[0020] Fig. 3 is a structural schematic view of a metal film according to an embodiment of the application;

[0021] Fig. 4 is a structural schematic view of a toggle assembly according to an embodiment of the application;

[0022] Fig. 5 is another structural schematic view of a toggle assembly according to an embodiment of the application;

[0023] Fig. 6 is a sectional view along A-A in Fig. 5;

[0024] Fig. 7 is a partially enlarged schematic view of B in Fig. 6;

[0025] Fig. 8 is an assembly schematic view of a toggle lever and a shell according to an embodiment of the application.

[0026] In the drawings:

[0027] 100, dialing rod; 110, butt joint recess; 200, shaft rod; 210, plug-in section; 211, arc-shaped transition part; 212, chamfer; 300, metal film; 400, shell. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0029] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0030] The dialing assembly, handle and endoscope provided by the embodiments of the present application will be described in detail below in combination with FIGS. 1 to 8 through specific embodiments and application scenarios.

[0031] Please refer to FIGS. 1 to 7, the present application discloses a dialing assembly, the disclosed dialing assembly is applied to an endoscope, specifically, the dialing assembly is used to drive the traction wheel connected with the traction rope of the endoscope to rotate, when the traction wheel is rotated by operating the dialing assembly, the bending action of the bending section of the endoscope can be realized by winding or releasing the traction rope, so as to change the orientation of the front end of the insertion part of the endoscope, so as to adjust the shooting direction of the camera module and / or the working area of the medical instrument.

[0032] In the embodiments of the present application, please refer to FIGS. 1 to 4, the dialing assembly comprises a dialing rod 100, a shaft rod 200 and a metal film 300, wherein the dialing rod 100 is plug-in matched with the shaft rod 200, specifically, the shaft rod 200 has a plug-in section 210 at the end thereof, the dialing rod 100 is provided with a butt joint recess 110 corresponding to the plug-in section 210, the plug-in section 210 is inserted into the butt joint recess 110, so as to realize the plug-in matching of the dialing rod 100 and the shaft rod 200, when the dialing rod 100 is rotated, the dialing rod 100 can drive the shaft rod 200 to rotate, so as to drive the traction wheel to rotate.

[0033] Please refer to FIG. 5~FIG. 7, the metal film 300 is located between the lever 100 and the shaft 200, and at least part of the metal film 300 covers the outer wall of the insertion section 210, the shaft 200 contacts the inner wall of the counter recess 110 and transmits torque through the metal film 300, by covering the metal film 300 on the outside of the insertion section 210 at the end of the shaft 200, the friction and impact of the lever 100 on the shaft 200 when rotating can be reduced, the wear of the shaft 200 is reduced, thereby ensuring the integrity of the structure of the shaft 200, the loosening and slipping between the lever 100 and the shaft 200 can be effectively avoided, the torque of the shaft 200 can be stably transmitted to the traction wheel, thereby ensuring the accuracy of the posture adjustment of the bending section of the endoscope insertion part.

[0034] In a further technical solution, the metal film 300 has a part covering the end face of the insertion section 210, and in this way, the part of the metal film 300 covering the end face of the insertion section 210 can play a limiting role, avoiding the axial sliding of the metal film 300 relative to the shaft 200 during the assembly of the metal film 300 to the shaft 200, so that the metal film 300 can be stably pushed into the counter recess 110 to play a protective role on the insertion section 210.

[0035] In the preferred embodiment of the present application, the part of the metal film 300 covering the end face of the insertion section 210 surrounds the end face of the insertion section 210, and in this way, when the metal film 300 is subjected to external force in any direction, it is also difficult for the metal film 300 to slide off the end face of the insertion section 210, thereby ensuring the stability of the metal film 300 covering the insertion section 210.

[0036] In the embodiment of the present application, please refer to FIG. 2, the cross section of the insertion section 210 perpendicular to the shaft 200 is non-circular, so as to avoid the rotation of the shaft 200 relative to the lever 100. In a preferred embodiment, the cross section of the insertion section 210 is square along the axial direction of the shaft 200, that is, the insertion section 210 has four side faces, so as to ensure the stable transmission of torque. In a further technical solution, the insertion section 210 forms an arc-shaped transition part 211 at the corner thereof along the circumferential direction of the insertion section 210, that is, the insertion section 210 is provided with an arc-shaped transition part 211 at the adjoining place of the side faces, on the one hand, the provision of the arc-shaped transition part 211 can reduce the difficulty of the insertion section 210 to the counter recess 110, on the other hand, the arc-shaped transition part 211 can avoid the wear of the metal film 300, prolong the service life of the metal film 300, and avoid the side face of the insertion section 210 being in an exposed state.

[0037] In a further technical solution, please continue to refer to Fig. 2, the shaft 200 is provided with a chamfer 212 at the abutment between its end face and two adjacent side faces, the chamfer 212 can reduce the radial dimension of the corner of the insertion section 210, and improve the convenience of the insertion section 210 and the mating recess 110.

[0038] In the embodiment of the present application, the metal film 300 is preferably a copper film, the copper film has better ductility, and the stability after assembly is better.

[0039] In a further technical solution, the insertion section 210 is further provided with a threaded hole, and the metal film 300 is provided with a relief hole, when the metal film 300 covers the insertion section 210, the relief hole on the metal film 300 corresponds to the threaded hole on the insertion section 210, when the lever 100 and the shaft 200 are inserted and matched, the connection and fixation of the two can be realized through the threaded cooperation of the threaded fastener and the threaded hole.

[0040] The embodiment of the present application also discloses a handle, the disclosed handle comprises a shell and the aforementioned lever assembly, the lever 100 is arranged outside the shell 400, the shaft 200 is arranged inside the shell 400, and the lever 100 and the shaft 200 are inserted and matched.

[0041] In an optional embodiment of the present application, please refer to Fig. 8, part of the lever 100 is rotatably embedded in the shell 400, and the shaft 200 is inserted and matched with the part of the lever 100 extending into the shell 400. In this way, after the shaft 200 is assembled with the lever 100, when the lever 100 is operated to rotate, the shell 400 may be slightly deformed due to artificial extrusion, the shaft 200 will only bear the torque transmitted by the lever 100, and will not contact the shell 400 to generate interaction force, so that the shaft 200 can better transmit the torque.

[0042] The embodiment of the present application also discloses an endoscope, the endoscope comprises the aforementioned handle.

[0043] It should be noted that, as used in this document, the terms "comprises" or "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, an element preceded by "comprises a" should not be interpreted as having exclusive association with that element with the presence of additional identical elements or removal of elements similarly so-constructed. Also, the term "another" as used in "another way to" or "another aspect" does not provide a restriction, but rather signifies another separate and alternative way to implement or utilize the described technology. Moreover, in describing the present technology, the expression "one way to" or "one aspect" does not foreclose the existence of another way to implement or utilize the technology.

[0044] The foregoing is merely illustrative of the principles of this application and various modifications can be made by those skilled in the art without departing from the scope of the application. The above description includes references to the accompanying drawings, which form a part of the detailed disclosure. The drawings show, by way of illustration, specific embodiments in which the principles of the present application can be implemented. These embodiments are described in enough detail to enable those skilled in the art to practice the application. The embodiments can be combined or substituted for one another.

Claims

1. A dial assembly comprising: The device comprises a lever (100), a shaft (200) and a metal film (300). The shaft (200) is provided with a plug-in section (210) at its end, the shaft (200) is plugged with the lever (100) through the plug-in section (210), the metal film (300) is located between the lever (100) and the shaft (200), and at least part of the metal film (300) covers the side of the plug-in section (210).

2. The toggle assembly of claim 1, wherein, The metal film (300) has a part covering the end face of the plug-in section (210).

3. The toggle assembly of claim 2, wherein, The part of the metal film (300) covering the end face of the plug-in section (210) surrounds the end face of the plug-in section (210).

4. The toggle assembly of claim 1, wherein, In the axial direction of the shaft (200), the cross section of the plug-in section (210) is square, and in the circumferential direction of the plug-in section (210), the plug-in section (210) forms an arc-shaped transition (211) at its corner.

5. The toggle assembly of claim 4, wherein, The shaft (200) is provided with a chamfer (212) at the junction of its end face and two adjacent side faces.

6. The toggle assembly of any one of claims 1-5, wherein, The metal film (300) is a copper film.

7. The toggle assembly of claim 1, wherein, The plug-in section (210) is further provided with a threaded hole.

8. A handle characterized in that, The device comprises a housing (400) and the lever assembly of any one of claims 1-6, the lever (100) is arranged outside the housing (400), the shaft (200) is arranged inside the housing (400), and the lever (100) is plugged with the shaft (200).

9. The handle of claim 8, wherein, Part of the lever (100) is rotatably embedded in the housing (400), and the shaft (200) is plugged with the part of the lever (100) extending into the housing (400).

10. An endoscope characterized by comprising: The device comprises the handle of any one of claims 6-9.

Images