CN215534195U - Snake bone unit and snake bone structure - Google Patents

Abstract

The utility model provides a snake bone unit and a snake bone structure, which comprise a tubular body, wherein two male connectors which are opposite in radial direction extend out of the tubular body along the axial direction, each male connector comprises a supporting part and a rotating part, two female connectors which are opposite in radial direction extend out of the tubular body along the direction opposite to the extending direction of the male connectors, each female connector comprises an accommodating part which is adaptive to the rotating part and a clamping part which is adaptive to the supporting part, the problems of high difficulty and low efficiency in installation and assembly of the snake bone units caused by the fact that the snake bone units are connected in a riveting mode in the traditional snake bone unit are solved, the snake bone units are not required to be assembled in a riveting mode, and the disassembly and assembly of the snake bone units are convenient.

Description

Snake bone unit and snake bone structure

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a snake bone unit and a snake bone structure applied to an endoscope.

Background

In recent years, flexible endoscopes have been widely used in medical examinations and surgeries. In an endoscope, observation is performed by inserting an insertion portion into a body cavity through a natural orifice or a small surgical incision of a human body, and various treatments and treatments are performed by inserting a treatment instrument into the body cavity through a treatment instrument insertion tube provided in the insertion portion as needed.

The endoscope insertion part is provided with a bending part, the bending part can perform bending actions in the vertical direction and the left-right direction through an internal mechanical device and can perform forward and backward operations through rotating a bending knob of the operation part, the bending part is composed of a snake bone, the snake bone comprises a plurality of snake bone units which are connected with each other, and adjacent snake bone units are riveted with each other, so that the endoscope insertion part is complex in structure, high in installation and assembly difficulty, low in riveting and assembly efficiency and high in cost; the snake bones are in rigid connection, and after the bending part is used for many times, the snake bone unit sections are damaged and are not easy to disassemble and replace; no other anti-separation structures except the hinge shaft pin are arranged between the adjacent snake bone units, so that the snake bone units are easy to separate.

SUMMERY OF THE UTILITY MODEL

The snake bone units and the snake bone structure disclosed by the utility model solve the problems of high difficulty and low efficiency in installation and assembly of the snake bone units caused by the fact that the traditional snake bone units are connected in a riveting mode, so that riveting assembly is not needed among the snake bone units, and the snake bone units are convenient to disassemble and assemble.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the snake bone unit comprises a tubular body, two male connectors which are opposite in radial direction extend out of the tubular body along the axial direction, each male connector comprises a supporting portion and a rotating portion, two female connectors which are opposite in radial direction extend out of the tubular body along the direction opposite to the extending direction of the male connectors, and each female connector comprises an accommodating portion which is adaptive to the rotating portion and a clamping portion which is adaptive to the supporting portion.

Furthermore, the clamping portion is formed by extending and bending the terminal of the accommodating portion.

Furthermore, joint portion is "L" type, the horizontal segment and the vertical section of joint portion constitute the recess.

Furthermore, two threading through holes which extend along the axial direction and are arranged oppositely in the radial direction are fixed on the inner wall of the tubular body.

Further, the two threading through holes are fixed on the inner wall of the tubular body and opposite to the accommodating part.

Further, the threading through hole is fixed on the inner wall of the tubular body in a welding mode.

The utility model also discloses a snake bone structure, which at least comprises two snake bone units which are connected end to end.

Furthermore, the snake bone structure also comprises an end snake bone unit, and only one end of the end snake bone unit is provided with a male joint and/or a female joint matched with the snake bone unit.

Furthermore, the rotation angle alpha between adjacent snake bone units, the radius r of the snake bone units and the gap x between the snake bone units satisfy the relation:

wherein, the clearance x between the snake bone units is the distance from the rotation center of the female joint to the cut part of the edge of the snake bone unit.

The beneficial technical effects are as follows:

1. the utility model discloses a snake bone unit, which comprises a tubular body, wherein two male connectors which are opposite in the radial direction extend out of the tubular body along the axial direction, each male connector comprises a supporting part and a rotating part, two female connectors which are opposite in the radial direction extend out of the tubular body along the direction opposite to the extending direction of the male connectors, each female connector comprises an accommodating part which is adaptive to the rotating part and a clamping part which is adaptive to the supporting part, the problems of large installation and assembly difficulty and low efficiency of the snake bone unit caused by the fact that the snake bone units are connected in a riveting mode are solved, the snake bone units are not required to be riveted and assembled, and the disassembly and the assembly of the snake bone units are facilitated;

2. in the utility model, the female joint comprises an accommodating part and a clamping part, the clamping part is formed by extending and bending the terminal of the accommodating part, the clamping part is L-shaped, the horizontal section and the vertical section of the clamping part form a groove, and the groove is clamped with the inner wall of the adjacent snake bone unit, so that the snake bone unit can be conveniently disassembled and replaced;

3. in the utility model, the rotation angle alpha between adjacent snake bone units in the snake bone structure, the radius r of the snake bone units and the gap x between the snake bone units satisfy the relation:

therefore, the radius of the snake bone units and the gaps among the snake bone units can be set, so that the rotating angle among the adjacent snake bone units can be controlled.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic structural view of a snake bone unit according to the present invention;

FIG. 2 is a schematic view of the structure of the connection of two snake bone units according to the present invention;

FIG. 3 is a schematic structural view of a straight state of the snake bone structure of the present embodiment;

fig. 4 is a schematic structural diagram of a serpentine bone structure in a bent state according to this embodiment.

Wherein, 1-tubular body, 11-male joint, 111-supporting part, 112-rotating part, 12-female joint, 121-accommodating part, 122-clamping part, 123-groove and 13-threading through hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In one aspect of the present invention, referring to fig. 1-2, a snake bone unit comprises a tubular body 1, two male connectors 11 extending radially and oppositely from the tubular body 1 along an axial direction, the male connectors 11 comprising a support portion 111 and a rotation portion 112, specifically, in this embodiment, the rotation portion 112 is a circular rotation portion, such that the center of the circular rotation portion is a rotation center, it can be understood that the present invention is not limited to the specific shape of the rotation portion 112 of the male connector 11, the tubular body 1 extends two female connectors 12 extending radially and oppositely from the axial direction opposite to the extension direction of the male connector 11, the female connectors 12 comprise an accommodating portion 121 adapted to the rotation portion 112, and a clamping portion 122 adapted to the support portion 111, specifically, the accommodating portion 121 is adapted to the rotation portion 112 of the male connector 11 in shape and size, and the clamping portion 122 is formed by extending and bending the terminal of the accommodating portion 111, joint portion 122 is "L" type, and the horizontal segment and the vertical section of joint portion 122 constitute recess 123, and when assembling into the snake bone structure with the snake bone unit, recess 123 joint is on the inner wall of adjacent snake bone unit for the snake bone unit is convenient for disassemble and change.

As an embodiment of the present invention, two threading through holes 13 extending in the axial direction and arranged opposite to each other in the radial direction are fixed on the inner wall of the tubular body 1, specifically, the threading through holes 13 are fixed on the inner wall of the tubular body 1 by welding, and the two threading through holes 13 are respectively located opposite to the receiving portions 121 of the two female connectors 12, it is understood that the fixing manner of the threading through holes 13 on the tubular body 1 is not limited herein as long as the fixing of the threading through holes 13 on the inner wall of the tubular body 1 can be realized.

In another aspect of the present invention, referring to fig. 3-4, the snake bone structure comprises at least two snake bone units connected end to end, wherein a pull wire (not shown) is inserted into each threading through hole 13 to drive the snake bone structure to bend, and it should be noted that the snake bone structure further comprises an end snake bone unit, and only one end of the end snake bone unit is provided with a male connector 11 and/or a female connector 12 matched with the snake bone unit.

The utility model discloses a snake bone structure, wherein a rotation angle alpha between adjacent snake bone units, a radius r of the snake bone units and a gap x between the snake bone units satisfy the following relation:

the distance x between the snake bone units is the distance from the rotation center of the female joint to the cut part of the edge of the snake bone unit, so that the rotation angle between the adjacent snake bone units can be controlled by setting the radius of the snake bone units and the gap between the snake bone units.

The snake bone unit and the snake bone structure formed by the snake bone unit are mutually pivoted and connected through the male joint and the female joint, riveting assembly is not needed, the structure is simple, and the process is simple; the clamping portion of the female joint is clamped with the inner wall of the adjacent snake bone unit to form an anti-falling limiting clamping structure, so that the adjacent snake bone units can be effectively prevented from being separated from each other, and the gap between the radius of the snake bone units and the snake bone units can be set through setting, so that the rotating angle between the adjacent snake bone units can be controlled.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims (9)

1. The utility model provides a snake bone unit, its characterized in that includes tubular body (1), extend two radial relative male joint (11) along the axial on tubular body (1), male joint (11) are including supporting part (111) and rotating part (112), tubular body (1) is gone up along with two radial relative female joint (12) are extended to the opposite direction of male joint (11) extending direction, female joint (12) include with rotating part (112) suitable holding portion (121) and with supporting part (111) suitable joint portion (122).

2. A snake bone unit according to claim 1, wherein the clamping portion (122) is formed by extending and bending the terminal end of the accommodating portion (121).

3. A snake bone unit according to claim 2, wherein the clamping portion (122) is "L" shaped, the horizontal and vertical sections of the clamping portion (122) forming a groove (123).

4. A snake bone unit according to claim 1, wherein two axially extending and diametrically opposed threading through holes (13) are fixed to the inner wall of the tubular body (1).

5. A snake bone unit according to claim 4, wherein two of said threading through holes (13) are fixed to the inner wall of the tubular body (1) opposite to the position of the housing (121).

6. A snake bone unit according to claim 4, wherein the threading through hole (13) is fixed to the inner wall of the tubular body (1) by welding.

7. A snake bone structure, comprising at least two snake bone units according to any of claims 1-6 connected end to end.

8. A snake bone structure according to claim 7, further comprising end snake bone elements, wherein only one end of the end snake bone elements is provided with a male connector (11) and/or a female connector (12) for mating with the snake bone elements.

9. The snake bone structure of claim 7, wherein the rotation angle α between adjacent snake bone units, the radius r of the snake bone units and the gap x between the snake bone units satisfy the relationship:

wherein, the clearance x between the snake bone units is the distance from the rotation center of the female joint to the cut part of the edge of the snake bone unit.

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