Endoscope snake bone and endoscope

Abstract

This utility model discloses an endoscope snake skeleton and an endoscope. The endoscope snake skeleton includes a first section, a second section, a third section, and an elastic steel wire. One end of the first section is provided with a first connecting part. Several second sections are provided, one end of which is provided with a second connecting part, and the other end of which is provided with a third connecting part. Several second sections are connected sequentially to form a second section group by means of the second connecting part being rotatably connected to the third connecting part. The second section at the beginning of the second section group is rotatably connected to the first connecting part of the first section through the second connecting part. One end of the third section is provided with a fourth connecting part, and the second section at the end of the second section group is rotatably connected to the fourth connecting part of the third section through the third connecting part. The first, second, and third sections are each provided with two centrally symmetrical steel wire channels for threading the elastic steel wire, so that the first, second, and third sections are connected in series.

Description

Technical Field

[0001] This utility model relates to the field of endoscope technology, and in particular to an endoscope snake skeleton and an endoscope. Background Technology

[0002] The endoscope serpentine is one of the important components at the tip of the endoscope that allows it to bend; the serpentine has multiple segments.

[0003] Traditionally, endoscopic skeletal systems were formed by hinged multiple segments together end to end, with adjacent segments connected by rivets. However, the hinge joints of these rivet-hung skeletal segments are thin, making them prone to fatigue damage, difficult to repair, and with a short service life. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an endoscope serpentine frame that is easy to install and has an extended service life.

[0005] This utility model also proposes an endoscope having the above-mentioned endoscopic snake bone.

[0006] An endoscopic snake skeleton according to a first aspect embodiment of the present invention includes a first coil, a second coil, a third coil, and an elastic steel wire; one end of the first coil is provided with a first connecting portion; several second coils are provided, one end of each second coil is provided with a second connecting portion, and the other end of each second coil is provided with a third connecting portion; several second coils are sequentially connected to each other in such a way that the second connecting portion is rotatably connected to the third connecting portion to form a second coil group; the first second coil of the second coil group is rotatably connected to the first connecting portion of the first coil through the second connecting portion; the third coil... One end is provided with a fourth connecting part, and the second section of the second section of the coil is rotatably connected to the fourth connecting part of the third section of the coil through the third connecting part; the first section, the second section, and the third section of the coil are all provided with two centrally symmetrical steel wire channels, which are used to pass through the steel wire channels to connect the first section, the second section, and the third section of the coil in series. One end of the elastic steel wire in the third section is fixedly connected to the third section of the coil, and one end of the elastic steel wire in the first section is fixed to the first section of the coil. The elastic steel wire is used to drive the first section, the second section, and the third section of the coil to be coaxially arranged.

[0007] It has at least the following beneficial effects: The first, second, and third sections of the endoscope skeleton are all connected to each other by a connecting part. An elastic steel wire is used to connect the first, second, and third sections, allowing the endoscope skeleton to recover its shape after bending. Furthermore, the use of the elastic steel wire in conjunction with each connecting part achieves rivet-free connections between the sections, facilitating skeleton installation and eliminating weak hinge points. Compared to previous directly hinged skeletons, this endoscope skeleton has a longer service life.

[0008] According to some embodiments of the present invention, the first ring has two centrally symmetrically distributed first connecting parts, the second ring has two centrally symmetrically distributed second connecting parts and two centrally symmetrically distributed third connecting parts, and the third ring has two centrally symmetrically distributed fourth connecting parts.

[0009] According to some embodiments of this utility model, fixing holes are provided on the outer peripheral walls of the first and third ring sections. The fixing holes are connected to the corresponding steel wire channels and are used to fix the elastic steel wires.

[0010] According to some embodiments of the present invention, the first connecting part and the third connecting part are arc-shaped grooves, and the second connecting part and the fourth connecting part are arc-shaped protrusions, the arc-shaped protrusions being able to rotate within the arc-shaped grooves.

[0011] According to some embodiments of the present invention, the first connecting part and the third connecting part are arc-shaped protrusions, and the second connecting part and the fourth connecting part are arc-shaped grooves, and the arc-shaped protrusions can rotate in the arc-shaped grooves.

[0012] According to some embodiments of this utility model, the included angle of the tangent of the arc-shaped protrusion is α, where α < 90°, and the included angle of the tangent of the arc-shaped groove is β, where β > 90°.

[0013] According to some embodiments of the present invention, a first inclined surface is provided at the end where the arc-shaped protrusion is located, and a second inclined surface is provided at the end where the arc-shaped groove is located. The first inclined surface and the second inclined surface form an angle θ, where 0 < θ < 30°.

[0014] According to some embodiments of the present invention, a first transition fillet is provided between the arc-shaped protrusion and the first inclined surface, and a second transition fillet is provided between the arc-shaped groove and the second inclined surface.

[0015] According to some embodiments of this utility model, the first section, the second section, and the third section are each provided with two traction channels. The center line connecting the two traction channels is perpendicular to the center line connecting the two wire channels. The traction channels are used to insert traction wires to connect the first section, the second section, and the third section in series. The traction wires are used to pull the first section, the second section, and the third section to bend.

[0016] An endoscope according to a second aspect of the present invention includes an endoscope snake skeleton according to the first aspect of the present invention described above.

[0017] It has at least the following beneficial effects: This endoscope has all the beneficial effects brought about by the aforementioned endoscopic snake bone, which will not be repeated here.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the endoscopic snake skeleton structure according to an embodiment of the present invention; Figure 2 for Figure 1 An exploded view of the endoscopic snake skeleton shown; Figure 3 for Figure 1 A schematic diagram showing the axial view of the endoscopic snake bone; Figure 4 for Figure 1 A schematic diagram of the structure of the first segment of the endoscopic snake bone is shown; Figure 5 for Figure 1 The image shows a side view of the endoscopic snake skeleton.

[0020] Figure label: First section 100, first connecting part 110; Second section ring 200, second connecting part 210, third connecting part 220; The third section is 300mm, the fourth connecting part is 310mm, and the elastic steel wire is 400mm. Wire channel 500a, fixing hole 500b, first transition fillet 500c, second transition fillet 500d, traction channel 500e; First inclined plane 600a, second inclined plane 600b. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Reference Figures 1 to 5 This utility model discloses an endoscopic snake skeleton, including a first coil 100, a second coil 200, a third coil 300, and an elastic steel wire 400; one end of the first coil 100 is provided with a first connecting part 110; several second coils 200 are provided, one end of the second coil 200 is provided with a second connecting part 210, and the other end of the second coil 200 is provided with a third connecting part 220. Several second coils 200 are sequentially connected to form a second coil group by means of the second connecting part 210 being rotatably connected to the third connecting part 220. The first end of the second coil group is rotatably connected to the first connecting part 110 of the first coil 100 through the second connecting part 210; one end of the third coil 300 is provided with a fourth connecting part 310. 0. The second section 200 at the tail end of the second section is rotatably connected to the fourth connecting part 310 of the third section 300 through the third connecting part 220. The first section 100, the second section 200 and the third section 300 are each provided with two centrally symmetrical steel wire channels 500a. The steel wire channels 500a are used to pass through the elastic steel wires 400, so that the first section 100, the second section 200 and the third section 300 are connected in series. One end of the elastic steel wire 400 in the third section 300 is fixedly connected to the third section 300, and one end of the elastic steel wire 400 in the first section 100 is fixed to the first section 100. The elastic steel wire 400 is used to drive the first section 100, the second section 200 and the third section 300 to be coaxially arranged.

[0025] It should be understood that the first ring 100, the second ring 200, and the third ring 300 are all rotatably connected to each other through connecting parts. The first ring 100, the second ring 200, and the third ring 300 are connected in series using an elastic steel wire 400, so that the endoscope snake skeleton can be restored by the elastic steel wire 400 after bending. Furthermore, the use of the elastic steel wire 400 in conjunction with each connecting part achieves rivetless connection between the rings, which facilitates the installation of the snake skeleton and eliminates weak hinge points. Compared with the previous directly hinged snake skeleton, this endoscope snake skeleton can have a longer service life.

[0026] It should be noted that the first connecting part 110 and the second connecting part 210 are in an abutting relationship. One of the first connecting part 110 and the second connecting part 210 is a groove and the other is a convex part. The convex part can rotate in the groove. The so-called rotation is under the constraint of the elastic steel wire 400. If the elastic steel wire 400 is not there, the first connecting part 110 and the second connecting part 210 will separate. This is one of the reasons why the snake bone segments of this application can not jam or interfere with each other.

[0027] In some embodiments, the first coil 100 is provided with two centrally symmetrically distributed first connecting portions 110, the second coil 200 is provided with two centrally symmetrically distributed second connecting portions 210 and two centrally symmetrically distributed third connecting portions 220, and the third coil 300 is provided with two centrally symmetrically distributed fourth connecting portions 310. It is understood that the connecting portions on each coil are centrally symmetrically distributed, which allows two elastic steel wires 400 to be centrally symmetrically threaded through each coil when they are connected in series, thereby improving the stability of each coil and making the elastic recovery smoother.

[0028] In some embodiments, fixing holes 500b are provided on the outer peripheral walls of the first section ring 100 and the third section ring 300. The fixing holes 500b are connected to the corresponding wire channels 500a and are used to fix the elastic wire 400.

[0029] In some embodiments, the first connecting portion 110 and the third connecting portion 220 are arc-shaped grooves, and the second connecting portion 210 and the fourth connecting portion 310 are arc-shaped protrusions, the arc-shaped protrusions being able to rotate within the arc-shaped grooves.

[0030] In some embodiments, the first connecting portion 110 and the third connecting portion 220 are arc-shaped protrusions, and the second connecting portion 210 and the fourth connecting portion 310 are arc-shaped grooves, wherein the arc-shaped protrusions are capable of rotating within the arc-shaped grooves.

[0031] Reference Figure 5 The included angle of the tangents of the arc-shaped protrusion is α, where α < 90°, and the included angle of the tangents of the arc-shaped groove is β, where β > 90°. It can be understood that the inclusion angles α and β allow the arc-shaped protrusion to abut against the arc-shaped groove, and the arc-shaped protrusion can rotate more within the arc-shaped groove because the included angle of the arc-shaped groove does not restrict the rotation of the arc-shaped protrusion. This facilitates operation and also allows each section of the ring to easily return to a coaxial state under the restoring force of the 40° elastic steel wire.

[0032] In some embodiments, the end where the arc-shaped protrusion is located is provided with a first inclined surface 600a, and the end where the arc-shaped groove is located is provided with a second inclined surface 600b. The first inclined surface 600a and the second inclined surface 600b form an angle θ, where 0 < θ < 30°.

[0033] In some embodiments, a first transition fillet 500c is provided between the arc-shaped protrusion and the first inclined surface 600a, and a second transition fillet 500d is provided between the arc-shaped groove and the second inclined surface 600b. The first transition fillet 500c and the second transition fillet 500d facilitate the rotation of the arc-shaped protrusion in the arc-shaped groove, reducing the feeling of jamming or sluggishness.

[0034] In some embodiments, the first coil 100, the second coil 200, and the third coil 300 are each provided with two traction channels 500e. The center line connecting the two traction channels 500e is perpendicular to the center line connecting the two wire channels 500a. The traction channel 500e is used to insert traction wires to connect the first coil 100, the second coil 200, and the third coil 300 in series. The traction wires are used to pull the first coil 100, the second coil 200, and the third coil 300 to bend.

[0035] An endoscope comprising an endoscope snake according to the first aspect embodiment of the present invention described above.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An endoscopic snake skeleton, characterized in that, include: The first section (100) has a first connecting part (110) at one end. The second section ring (200) is provided in a plurality of such rings. One end of the second section ring (200) is provided with a second connecting part (210), and the other end of the second section ring (200) is provided with a third connecting part (220). The plurality of second section rings (200) are connected in sequence to form a second section ring group by means of the second connecting part (210) being rotatably connected to the third connecting part (220). The second section ring (200) at the first end of the second section ring group is rotatably connected to the first connecting part (110) of the first section ring (100) through the second connecting part (210). The third section ring (300) has a fourth connecting part (310) at one end. The second section ring (200) at the tail end of the second section ring group is rotatably connected to the fourth connecting part (310) of the third section ring (300) through the third connecting part (220). The elastic steel wire (400) has two centrally symmetrical steel wire channels (500a) in the first section (100), the second section (200), and the third section (300). The steel wire channels (500a) are used to pass through the elastic steel wire (400) so that the first section (100), the second section (200), and the third section (300) are connected in series. One end of the elastic steel wire (400) in the third section (300) is fixedly connected to the third section (300), and one end of the elastic steel wire (400) in the first section (100) is fixed to the first section (100). The elastic steel wire (400) is used to drive the first section (100), the second section (200), and the third section (300) to be coaxially arranged.

2. The endoscopic snake skeleton according to claim 1, characterized in that, The first section (100) is provided with two centrally symmetrically distributed first connecting parts (110), the second section (200) is provided with two centrally symmetrically distributed second connecting parts (210) and two centrally symmetrically distributed third connecting parts (220), and the third section (300) is provided with two centrally symmetrically distributed fourth connecting parts (310).

3. The endoscopic snake skeleton according to claim 1, characterized in that, The first section (100) and the third section (300) are provided with fixing holes (500b) on their outer peripheral walls. The fixing holes (500b) are connected to the corresponding steel wire channels (500a) and are used to fix the elastic steel wire (400).

4. The endoscopic snake skeleton according to claim 1, characterized in that, The first connecting part (110) and the third connecting part (220) are arc-shaped grooves, and the second connecting part (210) and the fourth connecting part (310) are arc-shaped protrusions, which can rotate in the arc-shaped grooves.

5. An endoscopic snake skeleton according to claim 1, characterized in that, The first connecting part (110) and the third connecting part (220) are arc-shaped protrusions, and the second connecting part (210) and the fourth connecting part (310) are arc-shaped grooves. The arc-shaped protrusions can rotate in the arc-shaped grooves.

6. An endoscopic snake skeleton according to claim 4 or 5, characterized in that, The included angle of the tangent of the arc-shaped protrusion is α, where α < 90°, and the included angle of the tangent of the arc-shaped groove is β, where β > 90°.

7. An endoscopic snake skeleton according to claim 6, characterized in that, The end of the arc-shaped protrusion is provided with a first inclined surface (600a), and the end of the arc-shaped groove is provided with a second inclined surface (600b). The first inclined surface (600a) and the second inclined surface (600b) form an angle θ, where 0 < θ < 30°.

8. An endoscopic snake skeleton according to claim 7, characterized in that, A first transition fillet (500c) is provided between the arc-shaped protrusion and the first inclined surface (600a), and a second transition fillet (500d) is provided between the arc-shaped groove and the second inclined surface (600b).

9. An endoscopic snake skeleton according to claim 8, characterized in that, The first section (100), the second section (200), and the third section (300) are each provided with two traction channels (500e). The center line connecting the two traction channels (500e) is perpendicular to the center line connecting the two wire channels (500a). The traction channel (500e) is used to insert the traction wire to connect the first section (100), the second section (200), and the third section (300) in series. The traction wire is used to pull the first section (100), the second section (200), and the third section (300) to bend.

10. An endoscope, characterized in that, Includes the endoscopic snake bone as described in any one of claims 1 to 9.

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