CN219000225U - Bending part of endoscope and endoscope - Google Patents
Bending part of endoscope and endoscope Download PDFInfo
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- CN219000225U CN219000225U CN202222881810.5U CN202222881810U CN219000225U CN 219000225 U CN219000225 U CN 219000225U CN 202222881810 U CN202222881810 U CN 202222881810U CN 219000225 U CN219000225 U CN 219000225U
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- slit
- endoscope
- hollow tube
- wire passing
- gap
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- 238000005452 bending Methods 0.000 title claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 241000270295 Serpentes Species 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a bending part of an endoscope and the endoscope, comprising: the hollow tube is provided with a plurality of groups of gap parts, and the plurality of groups of gap parts extend along the axial direction of the hollow tube in sequence; each group of slit parts comprises: at least one slit; the gaps are distributed in the circumferential direction of the hollow tube; along the length direction of the gap, an included angle of a preset angle exists between the length direction of one end of the gap or the length direction of two ends of the gap and the radial direction of the hollow tube; the radial direction of the hollow tube is perpendicular to the axial direction of the hollow tube. According to the technical scheme, the gaps are obliquely arranged, so that not only is the bending softness enhanced, but also the axial support degree is enhanced.
Description
Technical Field
The utility model relates to the technical field of endoscopes, in particular to a bending part of an endoscope and the endoscope.
Background
Endoscopes are a very widely used medical and industrial inspection instrument, and in general, the portion of the endoscope extending into an object to be inspected is bent and turned by snake bones.
A plurality of tube segments cut out of the hollow tube with a laser, each tube segment including a connector that cooperates with a connector of an adjacent joint to ultimately form a controllable bend (commonly referred to as a "snake bone") at the distal end of the endoscope insertion tube.
In the prior art, the grooves cut on the hollow tube are all straight grooves perpendicular to the axial direction of the hollow tube, please refer to fig. 1, and the following disadvantages exist in the structure: on the one hand, in order to meet the softness, namely, bending is easier, the cutting groove needs to be large enough, but after the cutting groove is large, the axial supporting force of the hollow tube is weakened, and collapse is easy to occur; on the other hand, in order to satisfy the axial support degree, the slit is required to be relatively small, but after the slit is small, the softness of the hollow tube is insufficient, and the hollow tube is not easy to stretch and bend.
Therefore, the snake bone structure in the prior art cannot meet softness and axial support simultaneously.
Disclosure of Invention
The utility model provides a bending part of an endoscope and the endoscope, which are used for solving the problem that softness and axial support degree cannot be simultaneously met in the prior art.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
according to a first aspect of the present utility model, there is provided a bending section of an endoscope, comprising: the hollow pipe is provided with a plurality of groups of gap parts, and the plurality of groups of gap parts extend along the axial direction of the hollow pipe in sequence;
each group of the slit portions includes: at least one slit; the gaps are distributed in the circumferential direction of the hollow tube;
an included angle of a preset angle exists between the length direction of one end or the length direction of two ends of the gap and the radial direction of the hollow tube along the length direction of the gap;
the radial direction of the hollow tube is perpendicular to the axial direction of the hollow tube.
Preferably, each set of slit portions includes two slits: a first slit and a second slit;
the first gaps are distributed in the first circumferential direction of the hollow pipe, and the second gaps are distributed in the second circumferential direction of the hollow pipe;
the first gap and the second gap have a relative position difference with a preset length along the circumferential direction of the hollow tube.
Preferably, the gap is bent around the axial axis for a preset arc length, and after two sides of the gap are contacted, the contact position is line contact or surface contact.
Preferably, the slit is curved along the length direction of the slit.
Preferably, the slit is crescent-shaped along the length direction of the slit.
Preferably, the hollow tube is further provided with a plurality of groups of wire passing groove parts, and the groups of wire passing groove parts extend along the axial direction of the hollow tube in sequence;
each group of wire passing groove parts comprises two wire passing grooves: the first wire passing groove and the second wire passing groove;
the first wire passing groove and the second wire passing groove are respectively arranged on two opposite sides of the hollow pipe.
Preferably, the first wire passing groove is symmetrical with the second wire passing groove.
Preferably, the wall thickness of the hollow tube is less than a preset wall thickness value.
Preferably, the preset angle is any value between 10 degrees and 45 degrees.
Preferably, the hollow pipe is a hollow steel pipe.
According to a second aspect of the present utility model, there is provided an endoscope comprising: the bending section of the endoscope according to any one of the above.
According to the bending part of the endoscope and the endoscope, an included angle between the length direction of one end or the length direction of two ends of the gap and the radial direction of the pipeline is preset, namely the gap is of an inclined design; when axial tension is applied to the bending part of the endoscope, one end or two ends of the gap with an included angle generate acting force in the length direction, the included angle exists between the acting force and the radial direction, the acting force can be decomposed into radial force and axial force, the radial force can assist in bending the endoscope, namely, the bending softness of the endoscope is enhanced, and the axial force can assist in axial support of the endoscope, namely, the axial support degree of the endoscope is enhanced.
In an alternative scheme of the utility model, the gap is bent around the axial center for a preset arc length, and after two sides of the gap are contacted, the contact position is in line contact or surface contact, the contact surface is large, so that the bending stability can be improved.
In an alternative scheme of the utility model, the slit is crescent in the length direction, so that the inclined design of the slit can be better adapted, the slit is bent around the axial axle center for a preset arc length, and the two sides of the slit are closed in a long curve after being contacted, so that the contact area of the two sides of the slit is larger and the turning is more stable after being contacted due to bending.
In an alternative of the utility model, the slit arranged obliquely meets the softness and the axial support, so that the wall thickness of the hollow tube can be made thin (smaller than a preset wall thickness value), the structural size of the endoscope can be effectively improved, and the bending flexibility can be further enhanced.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of a prior art endoscope in a deployed configuration with a bending section;
FIG. 2 is a schematic view of a bending section of an endoscope according to an embodiment of the present utility model;
FIG. 3 is an expanded view of a bending section of an endoscope according to an embodiment of the present utility model;
FIG. 4 is an expanded view of a bending section of an endoscope according to a preferred embodiment of the present utility model;
reference numerals illustrate:
1-a slit portion, wherein the slit portion,
11-a first slit in which the first slit,
a second slit in the shape of a 12-second slit,
101-stress relief cuts;
2-a wire passing groove part,
21-a first wire-passing slot,
22-second wire passing groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present specification, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower surface", "upper surface", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In the description of the present specification, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the description of the present utility model, the meaning of "plurality" means a plurality, for example, two, three, four, etc., unless explicitly specified otherwise.
In the description of the present utility model, unless explicitly stated and limited otherwise, the term "coupled" and the like should be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The technical scheme of the utility model is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
In one embodiment, there is provided a bending portion of an endoscope, including: the hollow tube is provided with a plurality of groups of gap parts, and the plurality of groups of gap parts sequentially extend along the axial direction of the hollow tube, please refer to fig. 2.
Wherein each group of slit portions includes: at least one slit; the gaps are distributed in the circumferential direction of the hollow tube. Along the length direction of the slit, an included angle (namely, inclined arrangement) of a preset angle exists between the length direction of one end of the slit or the length direction of two ends of the slit and the radial direction of the hollow tube; the radial direction of the hollow tube is perpendicular to the axial direction of the hollow tube.
In the above embodiment, the included angle (i.e. the inclined arrangement) between the length direction of one end or the length direction of both ends of the slit and the radial direction of the tube is preset, when an axial pulling force is applied to the bending portion of the endoscope, the included angle of one end or both ends of the slit generates a force F in the length direction, and the included angle between the force F and the radial direction can be decomposed into a radial force F1 and an axial force F2, please refer to fig. 3. The radial force F1 can assist the bending, i.e. enhance the bending softness, and the axial force F2 can assist the axial support, i.e. enhance the axial support.
In an embodiment, the axial spacing between the adjacent slit portions may be the same or different, and may be set differently according to the bending rigidity of different portions of the bending portion, for example: for the part with high bending rigidity requirement (such as the middle part of the bending part), the axial distance can be designed to be larger; for portions where low bending rigidity is required (e.g., both ends of the bending portion), the axial spacing can be designed to be relatively small.
In one embodiment, each set of slit portions includes two slits: please refer to fig. 2 and 4 for the first slit 11 and the second slit 12. The first slits 11 are distributed in a first circumferential direction of the hollow tube and the second slits 12 are distributed in a second circumferential direction of the hollow tube. The first slit 11 and the second slit 12 have a relative position difference of a predetermined length along the circumferential direction of the hollow tube.
In one embodiment, the gap is bent around the axial axis for a preset arc length, and after two sides of the gap are contacted, the contacted positions are in line contact or surface contact, so that the rotation stability can be improved. The specific reason is that: in the prior art, the incisions are mostly rectangular incisions, namely, the slits are rectangular slits, and referring to fig. 1, when the hollow tube is bent to close the two sides of the slits, two points are necessarily contacted first, so that the axial support is insufficient, the bending stability is weakened while the axial support force is reduced, and the hollow tube is easy to swing radially; when the hollow tube is bent to two sides of the gap and is closed, the hollow tube is in contact with two lines or two surfaces, and the contact between the two lines or the contact between the two surfaces is smoother than the contact between the two points, so that the axial support property is improved, and the rotation stability is further improved.
In one embodiment, the slit is curved along the length direction of the slit, the slit is curved around the axial axis for a preset arc length, and after two sides of the slit are contacted, the contacted positions are in line contact or surface contact, so that the contact area is larger, and the turning is more stable.
In one embodiment, the slit is crescent-shaped along the length direction of the slit, please refer to the expanded view of the hollow tube in fig. 3. The crescent gap is bent around the axial axle center for a preset arc length, and after two sides of the gap are contacted, the contact surface is larger, and the rotation is more stable.
In one embodiment, since the two ends of the crescent-shaped slit are relatively narrow, in order to reduce stress, the two ends of the slit are provided as stress relief cuts 101, please refer to fig. 2.
In an embodiment, the slit may be other curved slits along the length direction of the slit, or may be a line contact or a surface contact after two sides of the slit are contacted, for example, a curved slit in the shape of the slit in fig. 3 may be used.
In one embodiment, the hollow tube is further provided with a plurality of groups of wire passing groove parts, and the plurality of groups of wire passing groove parts sequentially extend along the axial direction of the hollow tube; each group of wire passing groove part comprises two wire passing grooves: the first wire passing groove 21 and the second wire passing groove 22 refer to fig. 4. The first wire passing groove 21 and the second wire passing groove 22 are respectively arranged on two opposite sides of the hollow tube.
In an embodiment, since the slit is an obliquely arranged slit, the first wire passing groove 21 and the second wire passing groove 22 can be symmetrical, and referring to fig. 4, the stress is more uniform, and the processing technique is simpler. In the prior art, the vertical slot is designed, the wire passing groove cannot be bilaterally symmetrical, but can be left one or right one, refer to fig. 1, and thus the processing technology is complex and the stress is uneven.
In an embodiment, the slit arranged obliquely enhances the softness and the axial support, and because the axial support is enhanced, the wall thickness of the hollow tube can be very thin, the axial support can be met, and the wall thickness can be smaller than a preset wall thickness value. After the wall thickness of the hollow tube is thinned, the structural size of the endoscope can be effectively improved, and the bending flexibility can be further enhanced.
In one embodiment, the predetermined angle is any value between 10 ° and 45 °. Preferably, the preset angle is between 15 ° and 25 °.
In an embodiment, the slit arranged obliquely enhances the softness and the axial support degree, and because the softness is enhanced, the hollow tube can be a hollow steel tube, and even if the hollow steel tube is a steel tube, the softness can be met, and the threading groove is better formed in the steel tube. In the prior art, nickel-titanium alloy is used for replacing a steel tube in an endoscope in order to meet the softness, but the nickel-titanium alloy is not good for making a threading groove and is easy to burst.
In one embodiment, there is also provided an endoscope, comprising: the bending section of the endoscope according to any one of the embodiments described above.
In the description of the present specification, the descriptions of the terms "one embodiment," "an embodiment," "a particular implementation," "an example," and the like, 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 present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (11)
1. A bending portion of an endoscope, comprising: the hollow pipe is provided with a plurality of groups of gap parts, and the plurality of groups of gap parts extend along the axial direction of the hollow pipe in sequence;
each group of the slit portions includes: at least one slit; the gaps are distributed in the circumferential direction of the hollow tube;
an included angle of a preset angle exists between the length direction of one end or the length direction of two ends of the gap and the radial direction of the hollow tube along the length direction of the gap;
the radial direction of the hollow tube is perpendicular to the axial direction of the hollow tube.
2. The bending portion of an endoscope of claim 1, wherein each set of slit portions comprises two slits: a first slit and a second slit;
the first gaps are distributed in the first circumferential direction of the hollow pipe, and the second gaps are distributed in the second circumferential direction of the hollow pipe;
the first gap and the second gap have a relative position difference with a preset length along the circumferential direction of the hollow tube.
3. The bending portion of the endoscope according to claim 1, wherein the slit is bent around the axial center by a predetermined arc length, and after both sides of the slit are contacted, the contact position is line contact or surface contact.
4. A bending portion of an endoscope according to claim 3 and wherein said slit is curved along the length of said slit.
5. The bending portion of the endoscope of claim 4, wherein the slit is crescent shaped along a length of the slit.
6. The bending portion of the endoscope according to claim 1, wherein a plurality of groups of wire passing groove portions are further arranged on the hollow tube, and the plurality of groups of wire passing groove portions sequentially extend along the axial direction of the hollow tube;
each group of wire passing groove parts comprises two wire passing grooves: the first wire passing groove and the second wire passing groove;
the first wire passing groove and the second wire passing groove are respectively arranged on two opposite sides of the hollow pipe.
7. The bending portion of the endoscope of claim 6, wherein the first wire passing groove is symmetrical with the second wire passing groove.
8. The bending portion of an endoscope of claim 1, wherein a wall thickness of the hollow tube is less than a preset wall thickness value.
9. The bending portion of an endoscope according to any of claims 1 to 8, wherein said preset angle is any value between 10 ° and 45 °.
10. The bending portion of an endoscope according to any of claims 1 to 8, wherein the hollow tube is a hollow steel tube.
11. An endoscope, comprising: a bending section of an endoscope as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222881810.5U CN219000225U (en) | 2022-10-31 | 2022-10-31 | Bending part of endoscope and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222881810.5U CN219000225U (en) | 2022-10-31 | 2022-10-31 | Bending part of endoscope and endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219000225U true CN219000225U (en) | 2023-05-12 |
Family
ID=86248793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222881810.5U Active CN219000225U (en) | 2022-10-31 | 2022-10-31 | Bending part of endoscope and endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219000225U (en) |
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2022
- 2022-10-31 CN CN202222881810.5U patent/CN219000225U/en active Active
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