CN111714068A - Snake bone assembly capable of preventing radial falling and endoscope - Google Patents
Snake bone assembly capable of preventing radial falling and endoscope Download PDFInfo
- Publication number
- CN111714068A CN111714068A CN202010725066.2A CN202010725066A CN111714068A CN 111714068 A CN111714068 A CN 111714068A CN 202010725066 A CN202010725066 A CN 202010725066A CN 111714068 A CN111714068 A CN 111714068A
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- Prior art keywords
- snake bone
- circumferential position
- units
- adjacent
- falling
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- 241000270295 Serpentes Species 0.000 title claims abstract description 138
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 138
- 238000009434 installation Methods 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims 3
- 238000005452 bending Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0057—Constructional details of force transmission elements, e.g. control wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/008—Articulations
Abstract
The invention is suitable for the technical field of medical instruments, and provides a snake bone component capable of preventing radial falling, which comprises a plurality of snake bone units connected in sequence, wherein adjacent snake bone units are connected through a clamping structure at a first circumferential position, and adjacent snake bone units are connected through a connecting sheet at a second circumferential position, wherein the clamping structure and the connecting sheet are opposite in the circumferential direction of the snake bone units. According to the snake bone component capable of preventing radial falling, the adjacent snake bone units are connected through the clamping structure and the connecting sheet, so that the adjacent snake bone units can rotate mutually, the adjacent snake bone units can be prevented from being separated in the axial direction, and the snake bone component has smaller rigidity.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a snake bone component capable of preventing radial falling and an endoscope.
Background
The snake bone is an important component of an endoscope, generally used as a bending part of the endoscope, and the bending steering of the endoscope head end is realized by pulling a pulling rope placed in the snake bone.
In the prior art, two forms of snake bone are common:
one is a rivet connection type, for example, in patent US8579801B2, two adjacent snake bone units are provided with connecting lugs at the connecting position, and the connecting lugs are connected in a rotating manner by riveting, so that the rotating connection of the adjacent snake bone units is realized; however, since the manufacturing and assembling processes of rivet-rivet connection are very complicated, the technical requirements for workers are high, and riveting defects are very likely to occur. And the use of rivets also causes two problems: firstly, the rivet structure occupies the precious space of the inner cavity of the snake bone unit, and under the condition that the diameter of the insertion part of the endoscope is small, once the inner cavity space of the snake bone unit is occupied by the rivet, sufficient space cannot be reserved for hidden objects such as instrument tubes and the like; second, the rivet structure increases the outer dimension of the snake bone segment, which inevitably affects the insertion performance of the endoscope.
Based on the above reasons, the non-riveting snake bone continuously appears in the prior art, as in patent CN107334449A, the connection between adjacent parts is realized through the connection pair of the snap ring hinge structure, and the two sides of the connection pair are respectively formed with the chamfer, so that the snake bone is ensured to be flexibly rotated, and each unit of the snap ring hinge is also ensured not to scatter, thereby omitting the rivet structure and greatly improving the production efficiency. Various designs of snap ring hinge structures have also appeared in the prior art, such as in patents CN208677340U, CN208464025U, and CN208228927U, with different types of snap ring hinge structure designs.
However, a new problem is generated in the case of the rivetless snake bone, since the rivetless snake bone is substantially a rotational connection by a snap ring hinge structure between adjacent snake bone units, therefore, in the non-riveted snake bone, the stability of the connection between the snake bone units is far inferior to that of the rivet connection type, there is no problem of separation between the snake bone units in the axial direction of the snake bone segments, but, in the radial direction of the snake bone segments, there may be a problem of falling out, that is, when the snake bone unit receives a force in the radial direction, the snake bone units will fall off of adjacent snake bone units, which usually will not occur during diagnostic use, but at non-diagnostic times, under the action of external force (traction force brought by non-traction wires), the user can not intend to bend the snake bone segments in a transition way, so that the adjacent snake bone units are easy to fall off.
Although the prior art also has the snake bone component which can prevent radial falling as shown in fig. 1, the adjacent snake bone units 1 'and 2' of the snake bone component which can prevent radial falling are not cut off, but the connecting pieces 3 'and 4' are reserved, wherein the connecting pieces 3 'and 4' are distributed at opposite positions, the traction ropes 5 'and 6' are arranged at intervals with the connecting pieces 3 'and 4', and although the adjacent snake bone units in the snake bone component which can prevent radial falling do not have the problem of falling, the adjacent snake bone units are connected through the connecting pieces, so that the rigidity of the whole snake bone segment is larger, therefore, for the same bending angle, the bending force of the snake bone which is connected through a rivet connection type snake bone and a clasp hinge structure is larger, and the bending of the snake bone component is not facilitated.
Disclosure of Invention
The invention aims to provide a snake bone component capable of preventing radial falling and an endoscope, and aims to solve the technical problems of falling of a snake bone unit and high rigidity in the prior art.
The invention provides a snake bone component capable of preventing radial falling, which comprises a plurality of snake bone units connected in sequence, wherein adjacent snake bone units are connected through a clamping structure at a first circumferential position, and adjacent snake bone units are connected through a connecting sheet at a second circumferential position, wherein the clamping structure and the connecting sheet are opposite in the circumferential direction of the snake bone units.
Further, still have the haulage rope installation department on the snake bone unit, wherein, the haulage rope installation department with block structure, the connection piece is in the circumference of snake bone unit is spaced apart.
Further, the hauling cable mounting part is a bending piece formed on the snake bone unit or a mounting seat arranged on the inner wall of the snake bone unit.
Furthermore, the included angle of the opposite end surfaces of the adjacent snake bone units at the first circumferential position is larger than the included angle of the opposite end surfaces of the adjacent snake bone units at the second circumferential position.
Further, the opposite end faces of the adjacent snake bone units at the second circumferential position are parallel.
Further, the width of the snake bone unit at the first circumferential position is larger than the width at the second circumferential position.
The invention also provides an endoscope, which comprises the snake bone component capable of preventing radial falling.
Compared with the prior art, the invention has the technical effects that:
1. according to the snake bone component capable of preventing radial falling, the adjacent snake bone units are connected through the clamping structure and the connecting sheet, so that the adjacent snake bone units can rotate mutually, the adjacent snake bone units can be prevented from being separated in the radial direction, and the snake bone component has smaller rigidity.
2. The snake bone component capable of preventing radial falling can be processed into a finished product at one time through laser cutting, and is simple in processing mode and high in efficiency.
3. In the snake bone component capable of preventing radial falling, the opposite end surfaces of the adjacent snake bone units at the second circumferential position are parallel. Therefore, it is possible to ensure that the length of the connecting piece is relatively long, reducing the rigidity at the second circumferential position.
4. The snake bone component capable of preventing radial falling of the invention further ensures the smaller rigidity at the second circumferential position because of the smaller width at the second circumferential position.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a prior art snake bone assembly for preventing radial expulsion;
FIG. 2 is a schematic view of the snake bone assembly of the present invention which prevents radial expulsion;
FIG. 3 is another view of the snake bone assembly of the present invention to prevent radial expulsion;
FIG. 4 is an axial view of the snake bone assembly of the invention for preventing radial falling
FIG. 5 is a schematic view of the snake bone assembly of the present invention as viewed from a first circumferential position to prevent radial expulsion;
FIG. 6 is a schematic view of a snake bone assembly of the invention which is resistant to radial expulsion, as viewed from a second circumferential position.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 2 and 3, the snake bone component capable of preventing radial falling of the present invention is schematically illustrated, and the snake bone component capable of preventing radial falling of the present invention includes a plurality of snake bone units 10 connected in sequence, the whole snake bone component capable of preventing radial falling is formed by connecting a plurality of snake bone units 10 in sequence, and adjacent snake bone units 10 can rotate relatively, so that the snake bone component capable of preventing radial falling can be bent, and the observation angle of the endoscope can be adjusted conveniently.
Further, the adjacent snake bone units 10 are connected at the first circumferential position P1 by a clamping structure K, wherein the clamping structure K can be a mode that the connecting lug and the connecting groove are mutually matched as shown in fig. 2 and 3, and can also be other structural forms, and only the mutual rotation between the adjacent snake bone units can be realized, and the adjacent snake bone units can be prevented from being disengaged in the axial direction. Therefore, by this engagement structure K, the rotational connection between the adjacent snake bone units 10 is achieved, while also avoiding the disengagement of the adjacent snake bone units 10 in the axial direction at the position of the engagement structure K.
Further, adjacent snake bone units 10 are connected by a connecting piece C at a second circumferential position P2, wherein the engaging structure K and the connecting piece C are opposite to each other in the circumferential direction of the snake bone units 10.
In the snake bone component capable of preventing radial falling, the second circumferential position P2 is connected through the connecting piece C, so that the rigidity at the second circumferential position P2 is higher, and the first circumferential position P1 is connected through the clamping structure K, so that the rigidity at the first circumferential position P1 is lower, and the rigidity of the whole snake bone component capable of preventing radial falling is reduced, therefore, the bending force required by the snake bone component capable of preventing radial falling is not increased too much compared with that of a non-riveted snake bone such as CN107334449A and the like; meanwhile, due to the connecting piece C, the problem of falling off is avoided in the radial direction of the snake bone section, and therefore, the adjacent snake bone units can be prevented from falling off due to the fact that a user bends the snake bone section in a transition mode unintentionally.
Meanwhile, the snake bone component capable of preventing radial falling can be used for processing a finished product at one time by laser cutting through a long metal cylinder, and is simple in processing mode and high in efficiency.
Further, as shown in fig. 4, which is an axial view of the snake bone assembly of the present invention capable of preventing radial falling, the snake bone unit 10 further has a traction rope installation portion WA thereon, wherein the traction rope installation portion WA is spaced apart from the engaging structure K and the connecting piece C in the circumferential direction of the snake bone unit 10.
The pulling rope installation portion WA is used for installing the pulling rope W, the pulling rope W is usually fixedly inserted into the pulling rope installation portion WA of the most front snake bone unit 10, and movably inserted into the pulling rope installation portions WA of other snake bone units 10, so that the most front snake bone unit 10 can be driven to rotate by controlling the extension and retraction of the pulling rope W, and the most front snake bone unit 10 sequentially drives the following snake bone units 10 to rotate, thereby realizing the bending of the whole snake bone assembly capable of preventing radial falling.
Further, fig. 5 is a schematic view of the snake bone assembly which can prevent radial falling and is observed from a first circumferential position, fig. 6 is a schematic view of the snake bone assembly which can prevent radial falling and is observed from a second circumferential position, adjacent snake bone units 10 have an included angle alpha between opposite end surfaces of the first circumferential position P1, adjacent snake bone units 10 have an included angle beta between opposite end surfaces of the second circumferential position P2, and the included angles alpha and beta enable adjacent snake bone units 10 to have a rotatable space. Wherein the included angle alpha is larger than the included angle beta.
Preferably, the opposite end faces of the adjacent snake bone units 10 at the second circumferential position P2 are parallel. Therefore, a long length of the connecting piece C can be secured, and the snake bone component of the invention which can prevent radial falling out has a small rigidity at the second circumferential position P2.
Further, the width h1 of the snake bone unit 10 at the first circumferential position P1 is greater than the width h2 of the snake bone unit 10 at the second circumferential position P2. The snake bone component capable of preventing radial falling of the invention has smaller rigidity at the second circumferential position P2 due to the smaller width at the second circumferential position P2.
The invention also provides an endoscope, which comprises the snake bone component capable of preventing radial falling.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The snake bone component capable of preventing radial falling is characterized by comprising a plurality of snake bone units (10) which are connected in sequence, wherein the adjacent snake bone units (10) are connected through a clamping structure (K) at a first circumferential position (P1), the adjacent snake bone units (10) are connected through a connecting sheet (C) at a second circumferential position (P2), and the clamping structure (K) and the connecting sheet (C) are opposite in the circumferential direction of the snake bone units (10).
2. A snake bone component against radial falling out according to claim 1, wherein the snake bone unit (10) is further provided with a traction rope mounting portion (WA), wherein the traction rope mounting portion (WA) is spaced from the engaging structure (K) and the connecting piece (C) in the circumferential direction of the snake bone unit (10).
3. A snake bone component capable of preventing radial falling off according to claim 2, wherein the traction rope installation part (WA) is a bent piece formed on the snake bone unit (10) or an installation seat provided on the inner wall of the snake bone unit (10).
4. A snake bone assembly against radial displacement according to any of claims 1-3, wherein the included angle (α) of the opposite end faces of adjacent snake bone elements (10) at said first circumferential position (P1) is greater than the included angle (β) of the opposite end faces of adjacent snake bone elements (10) at said second circumferential position (P2).
5. A snake bone assembly against radial displacement according to any of claims 1-3, wherein the opposite end faces of adjacent snake bone elements (10) at said second circumferential position (P2) are parallel.
6. A snake bone assembly, which is resistant to radial shedding, as claimed in claim 1, wherein the width (h1) of said snake bone unit (10) at said first circumferential position (P1) is greater than the width (h2) at said second circumferential position (P2).
7. An endoscope, comprising a snake bone assembly according to any of claims 1-6 for preventing radial displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725066.2A CN111714068A (en) | 2020-07-24 | 2020-07-24 | Snake bone assembly capable of preventing radial falling and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725066.2A CN111714068A (en) | 2020-07-24 | 2020-07-24 | Snake bone assembly capable of preventing radial falling and endoscope |
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| Publication Number | Publication Date |
|---|---|
| CN111714068A true CN111714068A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010725066.2A Pending CN111714068A (en) | 2020-07-24 | 2020-07-24 | Snake bone assembly capable of preventing radial falling and endoscope |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007236751A (en) * | 2006-03-10 | 2007-09-20 | Olympus Corp | Endoscope insertion section |
| DE202011109769U1 (en) * | 2011-07-01 | 2012-03-15 | Stephan Wieth | Angled unit for an endoscope |
| CN106455925A (en) * | 2015-01-21 | 2017-02-22 | 奥林巴斯株式会社 | Endoscope insertion part and endoscope |
| CN107263528A (en) * | 2017-07-21 | 2017-10-20 | 清华大学 | The flexible joint structure of flexible arm |
| CN107334449A (en) * | 2017-07-11 | 2017-11-10 | 上海成运医疗器械股份有限公司 | Endoscope-use is without rivet snake bone component |
| CN109316157A (en) * | 2018-10-11 | 2019-02-12 | 苏州中科先进技术研究院有限公司 | A kind of two-way snake bone and endoscope of unilateral driving |
-
2020
- 2020-07-24 CN CN202010725066.2A patent/CN111714068A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007236751A (en) * | 2006-03-10 | 2007-09-20 | Olympus Corp | Endoscope insertion section |
| DE202011109769U1 (en) * | 2011-07-01 | 2012-03-15 | Stephan Wieth | Angled unit for an endoscope |
| CN106455925A (en) * | 2015-01-21 | 2017-02-22 | 奥林巴斯株式会社 | Endoscope insertion part and endoscope |
| CN107334449A (en) * | 2017-07-11 | 2017-11-10 | 上海成运医疗器械股份有限公司 | Endoscope-use is without rivet snake bone component |
| CN107263528A (en) * | 2017-07-21 | 2017-10-20 | 清华大学 | The flexible joint structure of flexible arm |
| CN109316157A (en) * | 2018-10-11 | 2019-02-12 | 苏州中科先进技术研究院有限公司 | A kind of two-way snake bone and endoscope of unilateral driving |
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Application publication date: 20200929 |