CN217310235U - Endoscope snake bone bending structure - Google Patents

Abstract

The utility model discloses a problem of easy damage when solving the crooked structure assembly of endoscope snake bone that the medical instrument field exists, an endoscope snake bone crooked structure is provided, this structure includes joint circle and rivet, the joint circle is provided with a plurality ofly, a plurality of joint circles link up each other, the rivet includes rivet head and rivet stem, rivet head and rivet stem are connected, all through rivet connection between two adjacent joint circles, in rivet connection department, one of them joint circle is provided with outer engaging lug, another joint circle is provided with the in-connection ear, the in-connection ear is located the inboard of outer engaging lug, the outer engaging lug is connected to the rivet head, the in-connection ear is connected to the rivet stem, in-connection ear and outer engaging lug clearance fit. The utility model discloses an endoscope snake bone bending structure, during the assembly, the engaging lug can not produce deformation, so not fragile engaging lug.

Description

Endoscope snake bone bending structure

Technical Field

The utility model relates to a medical appliance, in particular to an endoscope snake bone bending structure.

Background

The endoscope is a detection instrument integrating traditional optics, ergonomics, precision machinery, modern electronics, mathematics and software into a whole. The endoscope has an image sensor, an optical lens, a light source illumination, a mechanical device, etc., and can enter the stomach through the mouth or enter the body through other natural orifices. Since a lesion which cannot be displayed by X-ray can be seen by an endoscope, it is very useful for a doctor.

The existing endoscope can be freely bent after entering a human body by arranging the snake bone bending structure, so that a doctor can be better assisted to carry out medical work, but the existing endoscope snake bone bending structure is easy to cause part damage during assembly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an endoscope snake bone bending structure, during the assembly, the engaging lug can not produce deformation, so not fragile engaging lug.

According to the utility model discloses endoscope snake bone bending structure, including joint circle and rivet, the joint circle is provided with a plurality ofly, it is a plurality of the joint circle links up each other, the rivet includes rivet head and rivet bar, the rivet head with the rivet bar is connected, adjacent two all pass through between the joint circle rivet connection rivet junction, one of them the joint circle is provided with outer engaging lug, another the joint circle is provided with the inner connecting ear, the inner connecting ear is located the inboard of outer engaging lug, the rivet head is connected outer engaging lug, the rivet bar is connected the inner connecting ear, the inner connecting ear with outer engaging lug clearance fit.

According to the utility model discloses endoscope snake bone bending structure has following beneficial effect at least: interconnection engaging lug and outer engaging lug clearance fit, and through rivet connection, conveniently assemble to need not break the engaging lug off with the fingers and thumb during the assembly, also can not extrude each other between interconnection engaging lug and the outer engaging lug and touch, promptly when the assembly, the engaging lug can not produce deformation, so not fragile engaging lug, also can not be in the assembly the artificial structural strength who has reduced the engaging lug.

According to the utility model discloses a some embodiments, outer engaging lug is provided with outer even hole, the diameter ratio of rivet head the diameter in outer even hole is little, the rivet head is connected in outer even hole.

According to some embodiments of the present invention, the rivet head is welded or bonded in the outer connecting hole.

According to some embodiments of the utility model, the rivet still includes the rivet cap, the rivet cap is connected the rivet head is kept away from the one end of rivet stem, the diameter ratio of rivet cap the diameter of outer even hole is big, the rivet cap with outer engaging lug butt.

According to some embodiments of the invention, the rivet cap is welded or bonded with the outer engaging lug.

According to the utility model discloses a some embodiments, the in-connection ear is provided with the in-connection hole, the diameter ratio of rivet stem the diameter in-connection hole is little, the rivet stem cross-under the in-connection hole.

According to some embodiments of the present invention, the thickness of the outer engaging lug is T1, the thickness of the inner engaging lug is T2, T1 is equal to or less than 0.2mm and equal to or less than 1mm, and T2 is equal to or less than 0.2mm and equal to or less than 1 mm.

According to some embodiments of the invention, the plurality of at least one of the connection joint rings the connection joint ring is provided with a positioning structure for positioning a pull wire of an endoscope.

According to the utility model discloses a some embodiments, adjacent two connect the festival circle, one of them connect the festival circle to be outer festival circle, another connect the festival circle to be interior festival circle, the both ends of outer festival circle all are provided with two outer engaging lug, two outer engaging lug sets up relatively, the both ends of interior festival circle all are provided with two the interior engaging lug, two the interior engaging lug sets up relatively.

According to the utility model discloses a some embodiments still include the first festival circle, it is a plurality of foremost in the joint circle with the first festival circle is connected, the first festival circle is provided with two welding holes, two the welding hole sets up relatively, the welding hole is used for supplementary welding endoscope's traction wire.

Additional aspects and advantages of the 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.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the overall assembly of a snake bone bending structure of an endoscope according to an embodiment of the present invention;

FIG. 2 is an isometric view of a cross-sectional configuration of the serpentine curvature of the endoscope shown in FIG. 1;

FIG. 3 is an elevational view in cross-section of the serpentine configuration of the endoscope of FIG. 1;

FIG. 4 is a perspective view of an outer segment of the serpentine shaped structure of the endoscope shown in FIG. 1.

Reference numerals are as follows:

a connecting joint ring 100;

an outer joint ring 110, an outer connecting lug 111 and an outer connecting hole 111 a;

an inner ring 120, an inner connecting ear 121, an inner connecting hole 121 a;

a reinforcing plate 130, a positioning hole 131, a wire guide 132;

rivet 200, rivet head 210, rivet stem 220, rivet cap 230;

a first-segment ring 300, a welding hole 310;

a tail knuckle ring 400.

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 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 exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the positional or orientational descriptions, such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "tip", "inner", "outer", "axial", "radial", "circumferential", etc., are the positional or orientational relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, the side wall means the left side wall and/or the right side wall.

In the description of the present invention, "a plurality" means two or more, "more than", "less than", "more than" and the like are understood as excluding the number, "more than", "below", "within" and the like are understood as including the number. If the description of "first" and "second" is used for the purpose of distinguishing technical features, the description is not intended to indicate or imply relative importance or to implicitly indicate the number of the indicated technical features or to implicitly indicate the precedence of the indicated technical features.

In the description of the present invention, it should be understood that "a is disposed on B" and "a is disposed on B" represent the connection relationship or the positional relationship between a and B, and do not mean that a is necessarily above B.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, a movable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "bolted" and "screwed" are equally interchangeable. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

It should be understood that the similar features of the present invention are only distinguished by different prefixes, and therefore, in the present invention, the feature names without prefixes (or the feature names with partial prefixes) are used to indicate the combination of similar features, such as the outer engaging lug 111 and the inner engaging lug 121, which are indicated by "engaging lugs".

Referring to fig. 1 to 4, according to the utility model discloses an endoscope snake bone bending structure, including joint circle 100 and rivet 200, joint circle 100 is provided with a plurality ofly, a plurality of joint circles 100 link up each other, rivet 200 includes rivet head 210 and rivet bar 220, rivet head 210 and rivet bar 220 are connected, all connect through rivet 200 between two adjacent joint circles 100, in the rivet 200 junction, one of them joint circle 100 is provided with outer engaging lug 111, another joint circle 100 is provided with inner engaging lug 121, inner engaging lug 121 is located the inboard of outer engaging lug 111, outer engaging lug 111 is connected to rivet head 210, inner engaging lug 121 is connected to rivet bar 220, inner engaging lug 121 and outer engaging lug 111 clearance fit.

The snake bone connecting structure of the endoscope is a generally bendable tubular structure, and is internally provided with a lumen for accommodating other components (such as an electric wire for connecting a head camera of the front end of the endoscope and a handle of the endoscope) to pass through. "join" means end-to-end join; "the plurality of linking joint rings 100 are connected to each other", that is, the rear end (or tail end) of the first linking joint ring 100 is connected to the front end (or head end) of the second linking joint ring 100, and the rear end of the second linking joint ring 100 is connected to the front end … … of the third linking joint ring 100 and the rear end of the penultimate linking joint ring 100 is connected to the front end of the last linking joint ring 100. The rivet head 210 and the rivet stem 220 (and the rivet cap 230) are generally integrally connected, and in a special case, the connection may be welding, bonding, or the like. The number of rivets 200 is set according to the actual connection condition (the number of the connecting joint rings 100 is assumed to be N), for example, only one side needs to be connected by the rivets 200 (the other side is provided with the insertion holes, (the shaft-shaped protrusions integrally formed with the connecting joint rings 100)), only N-1 rivets 200 are needed, and 2N-2 rivets 200 are needed (if the snake bone connection structure in the embodiment includes the first joint ring 300 and the tail joint ring 400, 2N +2 rivets 200 are needed). It should be understood that, in the present invention, "inside" and "outside", the inside is the side close to the central axis (or lumen) of the snake bone, and the outside is the side far away from the central axis (or lumen) of the snake bone. The connection between the rivet head 210 and the outer engaging lug 111 may be a welding connection, a press-riveting connection, a tension-riveting connection, or the like. The rivet shaft 220 is connected with the inner connection lug 121 by plugging, so that the structure of the inner connection lug 121 is not damaged, the assembly is convenient, and a forced press hole is not needed. The inner connecting lug 121 and the outer connecting lug 111 are in clearance fit, namely when the axes of two adjacent connecting joint rings 100 are collinear, a clearance is formed between the inner connecting lug 121 and the outer connecting lug 111; of course, in actual use, due to the clearance fit, the joint ring 100 may have a slight displacement along the radial direction, so that the inner connection lug 121 and the outer connection lug 111 on one side abut against each other, and the clearance between the inner connection lug 121 and the outer connection lug 111 on the other side is increased.

In- connection ear 121 and 111 clearance fit of outer engaging lug, and connect through rivet 200, the convenient assembly to need not tear the engaging lug off with the fingers and thumb during the assembly, also can not extrude each other between in-connection ear 121 and the outer engaging lug 111 and touch, promptly when the assembly, the engaging lug can not produce deformation, so not fragile engaging lug, also can not be in the assembly artificial structural strength who has reduced the engaging lug.

Referring to fig. 1 to 4, in some embodiments of the present invention, the outer engaging lug 111 is provided with an outer connecting hole 111a, a diameter of the rivet head 210 is smaller than that of the outer connecting hole 111a, and the rivet head 210 is connected in the outer connecting hole 111 a.

The diameter of the rivet head 210 is smaller than that of the outer connecting hole 111a, or, the rivet head 210 and the outer connecting lug 111 are in clearance fit; the assembly is convenient, the rivet 200 does not need to be forcibly pressed into the hole, parts are not easy to damage during assembly, and the structural strength of the connecting lug is not artificially reduced (invisible structural damage is caused during extrusion, and the structural strength is reduced). It should be understood that the holes in the present invention are not necessarily circular holes, but may be square holes or holes with other shapes; the walls of the hole are not necessarily complete, for example, one side of the hole is provided with a notch to form a C-shaped structure.

Referring to fig. 1-4, in some embodiments of the present invention, the rivet head 210 is welded or bonded within the outer attachment hole 111 a.

Welding, the connected form that bonds, more firm, and compare and press the rivet, rise and rivet the connection, need not extrude even hole, so not fragile spare part when the assembly, also can not artificially reduce the structural strength of engaging lug.

Referring to fig. 1 to 4, in some embodiments of the present invention, the rivet 200 further includes a rivet cap 230, the rivet cap 230 is connected to an end of the rivet head 210 away from the rivet stem 220, a diameter of the rivet cap 230 is larger than a diameter of the outer connecting hole 111a, and the rivet cap 230 abuts against the outer connecting lug 111.

The rivet head 210 is located in the outer connecting hole 111a, or the rivet head 210 is inserted into the outer connecting hole 111 a. Be provided with rivet cap 230 (rivet 200 is step rivet 200 promptly), conveniently assemble, rivet cap 230 has certain location effect, and rivet 200 can not pass the connecting hole completely during the assembly, leads to rivet 200 to fall into the lumen, and makes things convenient for the welded connection of follow-up rivet 200 and outer engaging lug 111.

Referring to fig. 1-4, in some embodiments of the present invention, the rivet cap 230 is welded or bonded to the outer attachment lug 111.

Welding and bonding, the connection mode is simple, the connection is firm, and the rivet 200 is not easy to fall off.

Referring to fig. 1 to 4, in some embodiments of the present invention, the inner connection lug 121 is provided with an inner connection hole 121a, a diameter of the rivet rod 220 is smaller than that of the inner connection hole 121a, and the rivet rod 220 penetrates the inner connection hole 121 a.

The diameter of the rivet rod 220 is smaller than that of the inner connecting hole 121a, and the rivet rod 220 and the inner connecting lug 121 are in clearance fit; the assembly is convenient, the rivet 200 does not need to be forcibly pressed into the hole, the parts are not easy to damage during the assembly, and the structural strength of the connecting lug cannot be artificially reduced.

It is to be understood that in some embodiments, the length of the rivet stem 220 is greater than the depth of the inner attachment hole 121 a; the inner coupling lugs 121 are prevented from being disengaged from the rivets 200, resulting in the adjacent two coupling rings 100 being disconnected from each other upon radial movement thereof.

It is to be understood that in some embodiments, the rivet head 210 has a larger diameter than the interior connection hole 121 a; the assembly is convenient, and a certain positioning effect is achieved.

Referring to fig. 1 to 4, in some embodiments of the present invention, the thickness of the outer engaging lug 111 is T1, the thickness of the inner engaging lug 121 is T2, T1 is greater than or equal to 0.2mm and less than or equal to 1mm, and T2 is greater than or equal to 0.2mm and less than or equal to 1 mm.

The thicknesses of the outer connecting lug 111 and the inner connecting lug 121 are not less than 0.2mm, so that the structural strength of the connecting lugs is higher, and the use requirements are met; the thickness of engaging lug is all no more than 1mm, prevents that the engaging lug from being too thick, leads to the snake bone too big, is difficult for inserting the human body.

It is to be understood that in some embodiments, the absolute value of T1 minus T2 is less than 0.1mm, which results in the outer engaging lug 111 and the inner engaging lug 121 having nearly equal tensile strength, longer service life, and higher reliability.

Referring to fig. 1-4, in some embodiments of the present invention, at least one of the plurality of connector rings 100 is provided with a positioning structure for positioning a pull wire of an endoscope.

The endoscope controls the bending of the snake bone through a traction wire, the traction wire is a common part in the field of endoscopes, and the specific structure and the connection with other parts are not described in detail. Positioning structures, which may be holes in a plate, such as positioning holes 131 in this embodiment; or a concave part limiting structure formed by the concave inner side of the original structure; but may be a separately provided ring structure, C-shaped structure, or the like.

It is to be understood that in some embodiments, the positioning structure is a reinforcing plate 130, two positioning holes 131 and one wire guide 132 are disposed on the reinforcing plate 130, the two positioning holes 131 are disposed opposite to each other, the positioning holes 131 are used for positioning the pull wire, and the wire guide 132 is used for passing through the endoscope pipeline. Endoscope lines, such as power lines to the tip LED lamp, data lines to the camera, pipette tubing, etc. It should be understood that, in general, the plane is also symmetrical with respect to a certain plane. The reinforcing plate 130 can play a certain role in reinforcing the structural strength of the snake bone; the reinforcing plate 130 may be integrally formed with the joint ring 100, or may be connected to the joint ring 100 by welding, bonding, or the like.

Referring to fig. 1 to 4, in some embodiments of the present invention, in two adjacent joint rings 100 (in the joint rings 100 connected to each other), one joint ring 100 is an outer joint ring 110, the other joint ring 100 is an inner joint ring 120, two ends of the outer joint ring 110 are both provided with two outer engaging lugs 111, the two outer engaging lugs 111 are disposed oppositely, two ends of the inner joint ring 120 are both provided with two inner engaging lugs 121, and the two inner engaging lugs 121 are disposed oppositely.

Two ends of the outer joint ring 110 are respectively provided with two outer connecting lugs 111, namely, one outer joint ring 110 has four outer connecting lugs 111; similarly, there are four inner connecting lugs 121 in a total of one inner ring 120. Two ends of the connecting joint ring 100 are respectively provided with two oppositely arranged connecting lugs, so that the connecting joint ring 100 is in a bilateral symmetry structure (also in a front-back symmetry structure), and the processing of the connecting joint ring 100 and the assembly of a snake bone bending structure are facilitated.

It is to be understood that one of the outer and inner rims 110, 120 is provided with a reinforcement plate 130.

Referring to fig. 1 to 4, in some embodiments of the present invention, the endoscope further includes a first joint ring 300, a foremost joint ring 100 of the plurality of (mutually connected) joint rings 100 is connected to the first joint ring 300, the first joint ring 300 is provided with two welding holes 310, the two welding holes 310 are oppositely disposed, and the welding holes 310 are used for assisting welding a traction wire of the endoscope.

The connection of the connecting pitch ring 100 to the leading pitch ring 300 and the trailing pitch ring 400 is also generally by a rivet 200. Welding hole 310 is used for the auxiliary welding endoscope's pull wire, and during the specific processing, welder (or other welding device) through welding hole 310 with pull wire welded fastening on the inner wall of first section circle 300, need not stretch into the welded fastening that carries out the pull wire in first section circle 300 from the front end opening part of first section circle 300 promptly, and processing is more convenient.

It is to be understood that the endoscope serpentine curve structure may further include a tail segment 400, and the rearmost link segment 100 of the plurality of (inter-engaging) link segments 100 is connected to the tail segment 400.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. An endoscopic snake bone bending structure comprising:

a plurality of connecting joint rings, wherein the connecting joint rings are mutually connected;

the rivet comprises a rivet head and a rivet rod, wherein the rivet head is connected with the rivet rod;

adjacent two all pass through between the link circle rivet connection department, one of them the link circle is provided with outer engaging lug, another the link circle is provided with the inner connection ear, the inner connection ear is located the inboard of outer engaging lug, the rivet head is connected outer engaging lug, the rivet stem is connected the inner connection ear, the inner connection ear with outer engaging lug clearance fit.

2. The endoscope snake bone bending structure of claim 1, wherein the outer engaging lug is provided with an outer attachment hole, the rivet head having a diameter smaller than that of the outer attachment hole, the rivet head being attached in the outer attachment hole.

3. The endoscope snake bone bending structure of claim 2, wherein the rivet head is welded or bonded within the external connection hole.

4. The endoscope snake bone bending structure of claim 2 wherein the rivet further comprises a rivet cap attached to an end of the rivet head distal from the rivet stem, the rivet cap having a diameter larger than the diameter of the outer attachment hole, the rivet cap abutting the outer attachment lug.

5. The endoscope snake bone bending structure of claim 4, wherein the rivet cap is welded or bonded to the outer attachment lug.

6. The endoscope snake bone bending structure of claim 1, wherein the inner connecting ear is provided with an inner connecting hole, the rivet shaft having a diameter smaller than that of the inner connecting hole, the rivet shaft penetrating the inner connecting hole.

7. The endoscope snake bone bending structure of claim 1, wherein the thickness of the outer connection ear is T1, the thickness of the inner connection ear is T2, 0.2mm T1 1mm, 0.2mm T2 1 mm.

8. The endoscopic snake bone bending structure according to claim 1, wherein at least one of said plurality of said connecting loops is provided with a positioning structure for positioning a pull wire of an endoscope.

9. The endoscope snake bone bending structure of claim 1, wherein two adjacent connecting joint rings are an outer joint ring, the other connecting joint ring is an inner joint ring, two outer connecting lugs are arranged at two ends of the outer joint ring, the two outer connecting lugs are arranged oppositely, two inner connecting lugs are arranged at two ends of the inner joint ring, and the two inner connecting lugs are arranged oppositely.

10. The endoscope snake bone bending structure of claim 1, further comprising a first segment ring, wherein the foremost connecting segment of the plurality of connecting segments is connected with the first segment ring, the first segment ring is provided with two welding holes, the two welding holes are oppositely arranged, and the welding holes are used for assisting in welding a traction wire of an endoscope.

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