CN217310231U - Bending tube and endoscope comprising same - Google Patents

Abstract

The present disclosure describes a curved pipe comprising a plurality of pipe section groups connected in series with each other, the pipe section groups comprising at least one first pipe section and at least one second pipe section arranged adjacent to each other, the first pipe section and the second pipe section being identically configured to each other, wherein the first end of the first pipe section and the second pipe section comprises a first engagement head, a first engagement notch, a first limit boss, a first limit notch; the second end parts of the first pipe joint and the second pipe joint comprise a second occlusion head part, a second occlusion gap, a second limiting boss and a second limiting gap; the first occlusion head of the second pipe joint is embedded into the second occlusion notch of the first pipe joint, the second occlusion head of the first pipe joint is embedded into the first occlusion notch of the second pipe joint, the first limit boss of the second pipe joint is embedded into the second limit notch of the first pipe joint, and the second limit boss of the first pipe joint is embedded into the first limit notch of the second pipe joint.

Description

Bending tube and endoscope comprising same

Technical Field

The present disclosure relates to the field of medical devices, and more particularly to a bending tube for an endoscope and an endoscope including such a bending tube.

Background

The medical endoscope may be equipped with a bending tube for adjusting the orientation of the endoscope front end. The assembly forming of the bent pipe mainly comprises two modes of riveting and laser cutting forming. The bent pipe connected by the rivet needs to be manufactured firstly and then riveted and assembled, so that the process is complex, the production cost is increased, and the efficiency is low. The bending pipe that laser cutting takes shape is cut into a plurality of bending pieces or tube coupling by a pipe, and the connection structure of each bending piece or tube coupling that constitutes the bending pipe all has the recess and the protruding characteristic of mutual block, and the arch card goes into to establish ties each bending piece or tube coupling in the recess. The production efficiency of laser cutting bent pipe is high, but if the design is unreasonable, bent pipe can appear crooked not smooth and easy or the pipe internode defect such as drops easily, and then increases the operation potential safety hazard, influences the life of apparatus.

SUMMERY OF THE UTILITY MODEL

To at least partially overcome the above-mentioned problems of the prior art, the present disclosure provides a bent pipe, which enhances bending flexibility and connection tightness of the bent pipe through the design of the joint hinge feature.

In some embodiments, a curved pipe is disclosed that may include a plurality of pipe section sets in series with one another, the pipe section sets including at least one first pipe section and at least one second pipe section disposed adjacent to one another, the first pipe section and the second pipe section being identically configured to one another, wherein first ends of the first pipe section and the second pipe section include a first bite head, a first bite notch, a first stop boss, a first stop notch; the second end parts of the first pipe joint and the second pipe joint comprise a second occlusion head part, a second occlusion gap, a second limiting boss and a second limiting gap; the first interlock head of second pipe coupling imbeds the second interlock breach of first pipe coupling, and the second interlock head of first pipe coupling imbeds the first interlock breach of second pipe coupling, and the spacing boss of first spacing boss embedding of second pipe coupling imbeds the spacing breach of second of first pipe coupling, and the spacing boss of second of first pipe coupling imbeds the first spacing breach of second pipe coupling.

In some embodiments, the first and second pipe sections further comprise a circular arc protrusion disposed on an inner side of the first engagement head, the first engagement notch being defined by an outer side of the circular arc protrusion and an inner side defined by the first engagement head; and the first pipe joint and the second pipe joint further comprise circular arc-shaped notches arranged in the second occlusion head, and the circular arc-shaped protrusions are embedded into the circular arc-shaped notches.

In some embodiments, the opening direction of the first engaging head and the axial direction of the bent tube form a first angle, the opening direction of the second engaging head and the axial direction of the bent tube form a second angle, and the first angle and the second angle are greater than or equal to 0 degree and less than 10 degrees.

In some embodiments, the first included angle and the second included angle are less than or equal to 10 degrees.

In some embodiments, the engagement head and/or the engagement indentation is provided with a stop surface to limit movement of the engagement head in the engagement indentation.

In some embodiments, there is a clearance between the bite head and the bite notch to enable relative rotation of the bite head in the bite notch.

In some embodiments, the bite head and the bite gap are concentrically arranged with respect to each other.

According to another aspect of the present disclosure, there is provided an endoscope comprising any of the bending tubes described above.

The disclosed bending pipe forms a hinge structure for connecting adjacent pipe sections by means of the interlocking head and the interlocking notch which are mutually embedded, and the bending flexibility and the connection tightness of the bending pipe are enhanced.

Drawings

Fig. 1 illustrates a perspective view of a curved tube according to an embodiment of the present disclosure;

FIG. 2 shows an enlarged view of adjacent tube segments of a bent tube according to an embodiment of the disclosure;

fig. 3 shows a schematic structural view of a tube section of a curved tube according to an embodiment of the present disclosure.

Detailed Description

The bending tube disclosed in the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following detailed description and claims. It is noted that the drawings are in greatly simplified form and employ non-precise ratios for the purposes of facilitating and distinctly facilitating the description of the embodiments of the present invention.

The present disclosure is directed to a curved pipe comprising a plurality of sets of pipe sections connected in series with one another. The tube section set may comprise at least one first tube section and at least one second tube section arranged adjacent to each other. Each of the first and second pipe sections includes first and second ends with an engagement head and an engagement indentation disposed therein. The occlusion head of the first pipe joint is embedded into the occlusion gap of the second pipe joint, and the occlusion head of the second pipe joint is embedded into the occlusion gap of the first pipe joint. The engagement head and the corresponding engagement recess may be arranged concentrically with respect to one another. There may also be a gap between the biting head and the biting indentation to enable relative rotation of the biting head in the biting indentation without disengaging from each other.

A curved tube 100 according to an embodiment of the present disclosure is described below with reference to fig. 1 to 3.

A curved tube 100 according to embodiments of the present disclosure may include a plurality of circular tubular segment sets connected in series with one another. The pipe section group comprises a first pipe section 10 in a circular pipe shape and a second pipe section 10' in a circular pipe shape. The first pipe section 10 and the second pipe section 10' are identically configured to each other, arranged in series with each other to form a bent pipe 100. The pipe section of the bent pipe 100 according to the present embodiment is described below with reference to the first pipe section 10.

The first end of the pipe section 10 includes a first bite head 103 and a first bite notch 102 disposed around the inside of the first bite head 103. The first snap indentation 102 may be embodied as a cut-out in the first snap head 103. The second end of the pipe section 10 includes a second bite head 112 and a second bite notch 113 disposed around the outside of the second bite head 112.

The pipe section 10 can also comprise a circular arc-shaped projection 101 extending from the inner side of the first engagement head 103, the first engagement notch 102 being defined by the outer side of the circular arc-shaped projection 101 and the inner side defined by the first engagement head 103, in which case the first engagement notch 102 can be embodied as a cut-out in the first engagement head 103. The pipe joint 10 also includes a circular arc shaped indentation disposed in the second bite head 112. The circular arc-shaped protrusion 101 is embedded in the circular arc-shaped notch 111 of the adjacent pipe joint. The circular arc-shaped protrusion 101, the circular arc-shaped indentation 111 and the corresponding engagement head and engagement indentation are arranged concentrically with each other.

The opening direction of the first engaging head 103 of the pipe joint 10 forms a first angle with the axial direction of the bending pipe 100, and the opening direction of the second engaging head 112 forms a second angle with the axial direction of the bending pipe 100. Preferably, the first angle and the second angle range from 0 degrees or more to 90 degrees or less. More preferably, the first included angle and the second included angle range from approximately 0 degrees or more to 10 degrees or less. In the present embodiment, as shown in fig. 2 and 3, the first included angle and the second included angle preferably range substantially equal to 0 degrees, that is, the opening directions of the first biting head 103 and the second biting head 112 of the pipe joint 10 are substantially parallel to the axial direction of the bent pipe 100, and the first included angle and the second included angle are opposite to each other and face the outside of the pipe joint. This arrangement further facilitates the connection between adjacent pipe sections for ease of handling.

The circular arc-shaped protrusion 101 of the pipe joint 10 is embedded into the circular arc-shaped notch 111 of the adjacent pipe joint 10', so that the first occlusion head 103 of the pipe joint 10 is embedded into the second occlusion notch 113 of the adjacent pipe joint 10'; the second bite head 112 of the adjacent pipe section 10' fits into the first bite notch 102 of the pipe section 10. The first engagement head 103 of a pipe section 10 is spaced from the inner edge of the second engagement recess 113 in the second engagement recess 113 of an adjacent pipe section 10', and the second engagement head 112 of an adjacent pipe section 10' is spaced from the inner edge of the first engagement recess 102 in the first engagement recess 102 of the pipe section 10. These gaps allow the bite heads to move within the respective bite gaps, thereby allowing relative movement between the pipe section 10 and the adjacent pipe section 10', thereby adjusting the curvature or curvature of the curved pipe 100.

When the pipe section 10 is connected in series with an adjacent pipe section 10', the circular arc-shaped indentation 111 and/or the circular arc-shaped protrusion 101 and the engagement heads 103, 112 and the engagement indentations 102, 113 are arranged concentrically with one another, so that the pipe section 10 is rotationally movable relative to the adjacent pipe section 10'.

Stop surfaces may be provided in the engagement heads 112, 103 and/or the engagement indentations 113, 102 to limit movement of the engagement heads in the engagement indentations. Specifically, for the embodiment according to the present disclosure, the first engagement head 103 is provided with a first limit projection 1031, and the end of the first engagement notch 102 is provided with a first limit notch 1021. The second engaging head 112 is provided with a second limiting projection 1121, and the end of the second engaging gap 113 is provided with a second limiting gap 1131 to limit the movement of the engaging head in the corresponding engaging gap. Specifically, as shown in fig. 3, when the pipe section 10 is connected in series with an adjacent pipe section 10', the first and second bite heads 103 and 112 can move relatively in the second and first bite notches 113 and 102 of the adjacent pipe section 10', respectively.

When the pipe joint 10 rotates up and down to the limit position relative to the adjacent pipe joint 10', the second limit boss 1121 of the pipe joint 10 contacts with the first limit notch 1021 on the adjacent pipe joint 10', the first limit boss 1031 of the adjacent pipe joint 10' contacts with the second limit notch 1131, the multiple limit structures play a role simultaneously, when the bent pipe is bent, the clamped pipe joints are not easy to separate, and the strength of the bent pipe is improved.

In fig. 3, the tube segments 10 are shown disposed axisymmetrically with respect to the axial center of the bent tube 100.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, the term "inner side" and "outer side" generally refers to the circle center of the arc as the reference point, one side relatively close to the circle center is the "inner side", and one side relatively far away from the circle center is the "outer side".

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The terms "plurality" and "a plurality" in the present disclosure and appended claims refer to two or more than two unless otherwise specified.

It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed bent tube without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (8)

1. A bent pipe (100) comprising a plurality of pipe section groups connected in series with each other, said pipe section groups comprising at least one first pipe section (10) and at least one second pipe section (10') arranged adjacent to each other,

characterized in that the first pipe section (10) and the second pipe section (10') are identically constructed to one another, wherein

The first end parts of the first pipe joint and the second pipe joint comprise a first occlusion head part (103), a first occlusion gap (102), a first limit boss (1031) and a first limit gap (1021);

the second ends of the first pipe section and the second pipe section comprise a second occlusion head (112), a second occlusion gap (113), a second limit boss (1121) and a second limit gap (1131);

the first occlusion head (103) of the second pipe joint is embedded into the second occlusion notch (113) of the first pipe joint, the second occlusion head (112) of the first pipe joint is embedded into the first occlusion notch (102) of the second pipe joint, the first limit boss (1031) of the second pipe joint is embedded into the second limit notch (1131) of the first pipe joint, and the second limit boss (1121) of the first pipe joint is embedded into the first limit notch (1021) of the second pipe joint.

2. The curved tube of claim 1, wherein:

the first pipe joint (10) and the second pipe joint (10') further comprise an arc-shaped protrusion (101) arranged on the inner side surface of the first engagement head (103), and the first engagement notch (102) is defined by the outer side surface of the arc-shaped protrusion (101) and the inner side surface defined by the first engagement head (103); and is provided with

The first pipe joint (10) and the second pipe joint (10') further comprise circular arc notches (111) arranged in the second occlusion head, and the circular arc protrusions (101) are embedded into the circular arc notches (111).

3. The curved tube of claim 2, wherein:

the opening direction of the first occlusion head part (103) and the axial direction of the bent pipe (100) form a first included angle, the opening direction of the second occlusion head part (112) and the axial direction of the bent pipe form a second included angle, and the first included angle and the second included angle are larger than or equal to 0 degree.

4. The curved tube of claim 3, wherein the first included angle and the second included angle are less than or equal to 10 degrees.

5. The curved tube according to claim 1, wherein the bite head and/or the bite notch is provided with a limiting surface to limit movement of the bite head in the bite notch.

6. The curved tube of claim 1, wherein a clearance exists between the bite head and the bite notch to enable relative rotation of the bite head in the bite notch.

7. The curved tube of claim 1, wherein the bite head and the bite notch are concentrically arranged with respect to one another.

8. An endoscope, characterized by comprising a bending tube according to any of claims 1-7.

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