CN219397178U - Snake bone and endoscope - Google Patents

Abstract

The utility model discloses a snake bone and an endoscope, and belongs to the technical field of medical appliances. The snake bone includes tail joint, first joint and connects at least one middle joint between tail joint and first joint, and the snake bone has at least one assembly portion that is used for assembling the haulage rope, and every assembly portion is including locating the first pilot hole on the tail joint, locate the second pilot hole on the first joint and locate the installation department on every middle joint, wherein, in every middle joint, the installation department is including being close to the first depressed part that middle joint one end set up, be close to the second depressed part that opposite end set up and locate the third depressed part between first depressed part and the second depressed part, all be linked together through the through-hole that supplies the haulage rope to pass between first depressed part and the third depressed part. The snake bone has the advantages of compact structure and low processing difficulty.

Description

Snake bone and endoscope

Technical Field

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

Background

An endoscope is an instrument that can be used to assist a physician in performing a disease examination, and that can be used to access medical equipment, such as X-ray equipment, that is not visible, for viewing lesions in the human body. Existing endoscopes typically include a handle and an insertion portion that is curved at one end, i.e., one end of the insertion portion is bendable. The bending of the insertion part can be realized by pulling a traction rope connected with the insertion part, such as a steel wire, through a handle by using a snake bone. In the actual production process of the existing snake bones, the existing snake bones have the defects of complex processing technology, low qualification rate of finished products and the like, and meanwhile, the existing snake bones have larger outer diameter size and cannot meet the miniaturization, so that the existing snake bones are suitable for the requirements of disposable endoscopes.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide a snake bone which has the advantages of low processing difficulty, high finished product qualification rate, miniaturization and the like. Meanwhile, an endoscope with the snake bone is also disclosed.

To achieve the above object, an embodiment of the present utility model provides a snake bone, the snake bone includes a tail joint, a head joint and at least one middle joint connected between the tail joint and the head joint, the snake bone has at least one assembly portion for assembling a traction rope, each assembly portion includes a first assembly hole provided on the tail joint, a second assembly hole provided on the head joint and a mounting portion provided on each middle joint, wherein in each middle joint, the mounting portion includes a first recess portion provided near one end of the middle joint, a second recess portion provided near an opposite end, and a third recess portion provided between the first recess portion and the second recess portion, and the first recess portion and the third recess portion, and the second recess portion and the third recess portion are all communicated through a through hole through which the traction rope passes.

In one or more embodiments of the present utility model, in each intermediate joint, the first recess and the third recess, and the second recess and the third recess are all disposed in a staggered manner.

In one or more embodiments of the present utility model, gaps are formed between the tail joint and the adjacent intermediate joint, between the adjacent two intermediate joints, and between the head joint and the adjacent intermediate joint, a first connecting portion and a second connecting portion that connect the two adjacent joints are disposed in the gaps, and when the snake bone is in an unbent state, a plurality of the first connecting portions are on the same straight line, and a plurality of the second connecting portions are on the same straight line.

In one or more embodiments of the present utility model, the first and second connection portions divide the corresponding gap into a first gap and a second gap, which are V-shaped gaps or U-shaped gaps or a combination of V-shaped and U-shaped gaps.

In one or more embodiments of the present utility model, the first fitting hole, the second fitting hole, and the through hole are coaxially disposed when the snake bone is in an unbent state, and each of the intermediate joints has the same structure.

In one or more embodiments of the present utility model, the second assembly hole includes a mounting hole for assembling a stopper on the pulling rope and a threading hole for passing the pulling rope therethrough, and the mounting hole is in communication with the threading hole.

In one or more embodiments of the present utility model, the snake bone has two fitting parts symmetrically disposed with respect to a central axis thereof.

In one or more embodiments of the utility model, the head joint is provided with a spigot that prevents angular deflection when assembled with the head end seat.

In one or more embodiments of the utility model, the caudal joint, the cephalad joint, and each intermediate joint are integrally formed.

The utility model also discloses an endoscope comprising the snake bone.

Compared with the prior art, through adopting the assembly portion of above structure for the processing degree of difficulty of snake bone reduces, and the yields is high. Meanwhile, the snake bone is preferably made of plastic, has the advantage of low processing cost, and has compact structural layout, so that the diameter of the snake bone is smaller than 3mm during manufacturing, the thinner and smaller snake bone is realized, and the snake bone is suitable for a disposable endoscope. Moreover, the snake bone made of plastic material has the advantages of higher insulating strength, high safety and wider application range.

Drawings

FIG. 1 is a perspective view of a snake bone according to an embodiment of the utility model;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a top view of FIG. 1;

FIG. 5 is a perspective view of a snake bone according to another embodiment of the utility model;

FIG. 6 is an enlarged schematic view of portion B of FIG. 3;

FIG. 7 is a front view of a snake bone according to another embodiment of the utility model;

FIG. 8 is an enlarged schematic view of portion C of FIG. 7;

fig. 9 is a bottom view of fig. 7.

Fig. 10 is a bottom view of fig. 7.

The main reference numerals illustrate:

10-tail joint, 10 a-first fitting hole, 20-head joint, 20 a-second fitting hole, 21, spigot, 30-intermediate joint, 31-mounting portion, 31 a-first recess, 31 b-second recess, 31 c-third recess, 31 d-through hole, a-gap, a 0-first gap, a 1-second gap, b-first connection.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.

Hereinafter, the snake bone disclosed in the utility model will be described in detail by way of two examples.

Example 1

As shown in fig. 1 to 2, the snake bone according to the preferred embodiment of the utility model is made of plastic and other materials through injection molding, is suitable for disposable endoscopes, and has the advantages of low processing difficulty and high yield. Specifically, the snake bone is generally cylindrical and includes a tail joint 10, a head joint 20 and at least one intermediate joint 30 connected between the tail joint 10 and the head joint 20, in this embodiment, a plurality of intermediate joints 30 are illustrated as an example, that is, a plurality of intermediate joints 30 are disposed between the tail joint 10 and the head joint 20, the plurality of intermediate joints 30 are structurally the same, and gaps a are formed between the tail joint 10 and the adjacent intermediate joints 30, between the adjacent two intermediate joints 30 and between the head joint 20 and the adjacent intermediate joints 30, that is, the circumferential portions of the adjacent joints are spaced apart, and the gaps a between the joints can enable the opposite bending between the adjacent two joints to generate an offset, so as to realize bending of the snake bone, where the offset refers to that the central axes of the adjacent two joints may not be on the same straight line. In this embodiment, two connecting portions, namely, a first connecting portion b and a second connecting portion (not shown) are disposed on the circumferential surface where the gap a is located, and connection between two adjacent joints is achieved under the action of the first connecting portion b and the second connecting portion.

Further, the first and second connection parts b and a dividing the gap a into a first gap a0 and a second gap a1, the first and second gaps a0 and a1 being gaps having a U-shape. Through adopting the clearance that the shape is the U-shaped for the snake bone is convenient in the die sinking, drawing of patterns when processing, difficult production overlap, and the mould is not fragile.

In this embodiment, all the first connecting portions b are preferably aligned in the axial direction parallel to the central axis when the snake bone is in the unbent state, and similarly, all the second connecting portions are preferably aligned in the axial direction parallel to the central axis when the snake bone is in the unbent state. By making it on the same straight line, the snake bone can be on the same plane after bending. Of course, in other embodiments, the connecting portions may not be on the same line, so that the front end and the rear end of the snake bone are on different planes after the snake bone is bent, so as to avoid collision between the end of the snake bone and the snake bone during bending.

The snake bone has at least one assembly part for assembling the traction rope, and when the snake bone is implemented, the snake bone is optimally provided with two assembly parts, as shown in fig. 1-4, the bending of the snake bone is controlled by the two traction ropes, the snake bone can be bent towards two directions, so as to meet different use requirements, and the two assembly parts are preferably symmetrically arranged on the central axis of the two assembly parts. Of course, in other embodiments, for example, 4, 6, 8 assembling portions, etc. may be provided, and may be set according to actual requirements. The traction ropes here are preferably steel ropes.

Further, each assembly part includes a first assembly hole 10a provided on the tail joint 10, a second assembly hole 20a provided on the head joint 20, and an installation part 31 provided on each intermediate joint 30, the first assembly hole 10a being used for passing the traction rope, the second assembly hole 20a being also used for passing the traction rope and achieving fixation of the end of the traction rope, the installation part 31 being used for assembling the traction rope and allowing the traction rope to pass through the intermediate joint 30. In practice, one end of the haulage cable is connected to the control mechanism in the endoscope handle, and the opposite end passes through the first assembly hole 10a of the tail joint 10 and sequentially passes through each intermediate joint 30 and then is fixed in the second assembly hole 20a of the head joint 20. Under the control of the endoscope handle, the bending of the snake bone can be realized. In this embodiment, the second assembly hole 20a includes an installation hole for assembling the limiting member on the haulage rope and a threading hole for passing the haulage rope, and the installation hole is communicated with the threading hole. By adopting the structure, the limiting piece on the traction rope can be installed and fixed, so that the traction rope is stably connected with the snake bone.

Further, each intermediate joint 30 includes two sets of symmetrically disposed mounting portions, one of which will be described in detail. As shown in fig. 2, the mounting portion 31 includes a first concave portion 31a, a second concave portion 31b, and a third concave portion 31c. Wherein, one end of the middle joint 30 is provided with a first concave portion 31a, the opposite end is provided with a second concave portion 31b, a third concave portion 31c is formed between the first concave portion 31a and the second concave portion 31b, and the first concave portion 31a to the third concave portion 31c are all used for accommodating or accommodating the traction rope. The first concave portion 31a and the third concave portion 31c, and the second concave portion 31b and the third concave portion 31c are all communicated through a through hole 31d, wherein the through hole 31d is used for allowing the traction rope to pass through. In practice, the traction rope enters the first recess 31a and enters the third recess 31c through the through hole 31d, further enters through the through hole 31d and is led out from the second recess 31b to the outside to enter the next intermediate joint 30 or the head joint 20. By adopting the mounting part 31 with such a structure on the middle joint 30, the snake bone is more convenient to process, and the processing difficulty is reduced.

In this embodiment, the first concave portion 31a, the second concave portion 31b, and the third concave portion 31c in each intermediate joint 30 are arranged in a staggered manner. The center lines of the through holes on the two groups of mounting parts are arranged in parallel with the center line of the snake bone at intervals. Further, in the present embodiment, the first fitting hole 10a on the tail joint 10, the through hole 31d of each intermediate joint 30, and the second fitting hole 20a on the head joint 20 are on the same straight line when the snake bone is in the unbent state.

As shown in fig. 1, in order to achieve rapid assembly of the snake bone and to prevent the snake bone from rotating after assembly, the head joint 20 is provided with a spigot 21 for preventing angular deflection when assembled with the head end seat.

Example two

As shown in fig. 5 and 6, another snake bone in a bent state includes a tail joint 10, a head joint 20, and at least one intermediate joint 30 connected between the tail joint 10 and the head joint 20. Unlike the first embodiment, in the present embodiment, the first and second connection parts b and a dividing the gap a into the first and second gaps a0 and a1, the first and second gaps a0 and a1 being V-shaped gaps. By adopting the V-shaped gap, the snake bones can be in surface contact with each other after bending, the reliability is higher, the service life is relatively longer, and the snake bones are more stable during bending.

Example III

As shown in fig. 7 to 10, another snake bone is provided, which includes a tail joint 10, a head joint 20, and at least one intermediate joint 30 connected between the tail joint 10 and the head joint 20. Unlike the first embodiment, in the present embodiment, the first connection portion b and the second connection portion divide the gap a into a first gap a0 and a first gap a1, and the first gap a0 and the second gap a1 are gaps in the shape of a combination of a U shape and a V shape. By adopting the gap with the combination of the V shape and the U shape, the snake bone has the advantages brought by adopting the V shape and the U shape. FIGS. 9 and 10 are end views of two snake bones with a V-shaped and U-shaped combined gap, respectively, wherein the two circular hole channels inside the snake bones of FIG. 9 through which instruments and cables can pass are not in communication; whereas in fig. 10 the interior of the snake bone is in communication with a passageway through which instruments and cables may be passed.

The utility model also discloses an endoscope with the snake bone.

According to the snake bone, the assembling part with the structure is adopted, so that the processing difficulty of the snake bone is reduced, and the yield is high. Meanwhile, the snake bone is preferably made of plastic, has the advantage of low processing cost, and has compact structural layout, so that the diameter of the snake bone is smaller than 3mm during manufacturing, the thinner and smaller snake bone is realized, and the snake bone is suitable for a disposable endoscope. Moreover, the snake bone made of plastic material has the advantages of higher insulating strength, high safety and wider application range. Since the endoscope has the above snake bone, the endoscope also has corresponding advantages.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims (10)

1. The snake bone comprises a tail joint, a head joint and at least one middle joint connected between the tail joint and the head joint, wherein the snake bone is provided with at least one assembly part for assembling a traction rope, each assembly part comprises a first assembly hole formed in the tail joint, a second assembly hole formed in the head joint and a mounting part formed in each middle joint, each mounting part comprises a first concave part arranged close to one end of the middle joint, a second concave part arranged close to the opposite end of the middle joint and a third concave part arranged between the first concave part and the second concave part, and all through holes for the traction rope to pass through are formed between the first concave part and the third concave part, and each second concave part and the third concave part.

2. The snake bone of claim 1, wherein in each intermediate joint, the first and third recesses, the second and third recesses are offset.

3. The snake bone of claim 1, wherein gaps are formed between the tail joint and the adjacent intermediate joint, between the adjacent two intermediate joints and between the head joint and the adjacent intermediate joint, a first connecting part and a second connecting part for connecting the two adjacent joints are arranged in the gaps, and when the snake bone is in an unbent state, a plurality of the first connecting parts are positioned on the same straight line, and a plurality of the second connecting parts are positioned on the same straight line.

4. A snake bone according to claim 3 wherein the first and second connecting portions divide the corresponding gap into a first gap and a second gap, the first and second gaps being V-shaped gaps or U-shaped gaps or a combination of V-and U-shaped gaps.

5. The snake bone of claim 1, wherein the first mounting hole, the second mounting hole and the through hole are coaxially disposed when the snake bone is in an unbent state.

6. The snake bone of claim 1, wherein the second mounting hole comprises a mounting hole for mounting a limiting member on the hauling cable and a threading hole for passing the hauling cable therethrough, the mounting hole being in communication with the threading hole.

7. A snake bone according to claim 1, wherein said snake bone has two fitting parts symmetrically arranged about its central axis.

8. The snake bone of claim 1 wherein said head joint is provided with a spigot for preventing angular deflection when assembled with the head end socket.

9. The snake bone of claim 1 wherein the tail joint, the head joint and each of the intermediate joints are integrally formed.

10. An endoscope comprising a snake bone according to any of claims 1-9.