CN110507275B - Universal joint adjustable snake bone and endoscope - Google Patents
Universal joint adjustable snake bone and endoscope Download PDFInfo
- Publication number
- CN110507275B CN110507275B CN201910883975.6A CN201910883975A CN110507275B CN 110507275 B CN110507275 B CN 110507275B CN 201910883975 A CN201910883975 A CN 201910883975A CN 110507275 B CN110507275 B CN 110507275B
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- bone
- condyle
- spherical surface
- threading
- snake bone
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 85
- 241000270295 Serpentes Species 0.000 title claims abstract description 45
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism 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
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
-
- 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
- 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 discloses a universal joint adjustable snake bone and an endoscope, wherein the snake bone comprises a plurality of hollow bone joints which are connected in sequence; the adjacent bone segments are connected with each other by adopting a spherical universal joint structure. Preferably, compression springs are further arranged between the adjacent condyles and used for enabling the adjacent condyles to be far away from each other along the axial direction; flanges are formed on the condyles; the flange is provided with four first threading holes uniformly distributed on the circumference; the inner hole of the compression spring forms a second threading hole, and two ends of the compression spring are abutted against two flanges of the adjacent condyles; the first threading hole and the second threading hole are used for threading the angle adjusting control cable; the two sides of the flange are provided with extended convex rings; the orifice portion of one of the two collars has a space to receive the distal end of the other. The endoscope has the aforementioned snake bone. The snake bone has the beneficial effects of compact structure, convenient deformation adjustment and long service life. The endoscope has the characteristics of the snake bone, and has good operability and good posture stability.
Description
Technical Field
The invention relates to the technical field related to electronic endoscopes, in particular to a universal joint adjustable snake bone and an endoscope.
Background
Snake bone is widely applied to an electronic endoscope system and is a movement mechanism for adjusting the angle of the head end. The structure is complex, the requirement on dimensional accuracy is high, and the manufacturing is difficult. The existing snake bones are mostly sheet metal structure assemblies, the external force resistance performance is poor, adjacent bone segments are hinged through a hinge shaft perpendicular to the axis, bending which rotates around the hinge shaft can only be formed between the adjacent bone segments, and when angle adjustment in any direction is to be realized, at least three bone segments are matched. The existing hinge shaft connection mode leads to the overall length of the snake bone to be large in size, damage is easily caused to an external rubber protection piece, and state return after working is required to be achieved through a return spring or structural control in the hand wheel, so that the internal structure of the hand wheel is complex. For this reason, further improvements are required.
Disclosure of Invention
The first object of the present invention is to provide an adjustable snake bone of universal joint, which is connected with each other by adopting a spherical universal joint structure between adjacent bone segments, thereby improving the structural stability and strength, improving the external force resistance, and reducing the number of bone segments, reducing the damage to the rubber protection member and prolonging the overall service life by utilizing the direction adjustment flexibility of the spherical hinge structure. A second object of the present invention is to provide an endoscope having the above-mentioned snake bone.
In order to achieve the first object, the present invention adopts the following technical scheme:
an adjustable snake bone of a universal joint comprises a plurality of hollow bone segments which are connected in sequence; the adjacent bone segments are connected with each other by adopting a spherical universal joint structure.
According to the invention adopting the technical scheme, the adjacent bone segments forming the snake bone are connected with each other by adopting the spherical universal joint structure. The structural stability and the high strength characteristic of the spherical structure are utilized, so that the external force resistance of the snake bone is improved; meanwhile, the spherical universal joint has the characteristic of universal adjustment, so that the angle adjustment between adjacent bone joints is not limited in one plane any more, when the angle adjustment in any direction is needed, the spherical universal joint can be realized through one spherical hinge structure between two adjacent bone joints, the number of the required bone joints can be effectively reduced, the flexibility of the bone joint adjustment is improved, bending points are correspondingly reduced, the damage to external rubber protection parts is reduced, and the service life of the protection parts is prolonged, and the overall service life of snake bones is prolonged.
Preferably, an elastic member is further disposed between adjacent condyles, and the elastic member is used for axially separating the adjacent condyles from each other. Under the condition that the total length of the free state of the snake bone, namely the distance between the front end and the rear end is determined, the pretightening with set force can be formed between the adjacent bone segments, so that the rigidity of the set state is maintained, and the controllability of the deformation state is effectively improved.
Further preferably, a flange is formed on the condyle, and four first threading holes which are uniformly distributed on the circumference and are used for threading the angle adjusting cable are formed on the flange; the elastic component is provided with a second threading hole for threading the angle adjusting cable, and two ends of the elastic component are abutted on two flange opposite surfaces of the adjacent bone segments. The angle adjusting cable penetrating hole is arranged by using the flange with relatively smaller axial size, so that the penetrating hole setting requirement can be met, the overall weight of the snake bone is reduced, and the lightweight design requirement is met.
Still more preferably, both sides of the flange are provided with extended convex rings; the orifice portion of one of the two collars has a space to receive the distal end of the other. So that the ends of the snake bones can be orderly contained between the condyles, thereby effectively avoiding the damage to the external rubber protecting piece.
Still more preferably, the condyle is composed of a front end condyle, a rear end condyle, and a plurality of intermediate condyles; wherein, one end of the front end condyle forms a convex sphere or a concave sphere with the sphere center positioned on the axis of the front end condyle; a concave spherical surface or a convex spherical surface corresponding to the convex spherical surface or the concave spherical surface of the front end condyle is formed on the rear end condyle, and the spherical center of the concave spherical surface or the convex spherical surface is positioned on the axis of the rear end condyle; one end of the middle condyle is provided with a concave spherical surface, the other end of the middle condyle is provided with a convex spherical surface, and the spherical centers of the concave spherical surface and the convex spherical surface on the middle condyle are positioned on the axis of the middle condyle; and all the concave spherical surfaces or the convex spherical surfaces have equal radiuses. So as to form a complete snake bone component, and ensure good operability when used for an endoscope.
Still further preferably, the front end of the front end condyle is fixedly connected with a lens connecting component; the tail end of the rear end condyle is fixedly connected with a cannula; a rubber sleeve is arranged between the cannula and the lens connecting component, and the rubber sleeve is wrapped on the periphery of all bone joints; the front end condyle is provided with four angle adjusting cables in a penetrating mode through four first threading holes, the front ends of the angle adjusting cables are fixed with the front end condyle, the tail ends of the angle adjusting cables penetrate through a plurality of elastic components and a plurality of middle condyles in a staggered mode in sequence, and then the control end is formed by penetrating out of the first threading holes of the rear end condyle. The endoscope structure is formed, the angle is regulated and controlled through the angle regulating cable, and the other cable which is arranged at 180 degrees apart is preferably prevented from loosening correspondingly at one end of the pulling setting cable, so that the regulation speed is high, and the posture controllability is good.
Still further preferably, the elastic member is constituted by a cylindrical helical compression spring, and a hollow portion of the cylindrical helical compression spring constitutes the second threading hole; four elastic members are arranged between adjacent bone segments, and counter bores are formed in the openings of the first threading holes; the end part of the elastic component is abutted against the bottom of the counter bore. The small-size snake bone is ensured to be formed by utilizing the characteristic of small radial structure size of the cylindrical spiral spring so as to meet the use requirement of reducing the cross section size of the endoscope as much as possible. The elastic member may be formed of an elastic material made of a bush, or the elastic member may be formed of at least one washer made of an elastic material, or a plurality of washers may be coaxially stacked.
Still more preferably, the elastic member is constituted by an elastic annular pad having an inner diameter larger than the spherical surface of the condyle. The four springs or the bushings are replaced by the elastic annular pad, so that the snake bone combination is facilitated, the number of the snake bone segments is increased or decreased, and the assembly and disassembly efficiency is improved.
In order to achieve the second object, the present invention adopts the following technical scheme.
An endoscope comprises a universal joint adjustable snake bone for realizing the first purpose, and adjusting hand wheels are correspondingly arranged to adjust the deformation of the snake bone after the free ends of two opposite angle adjusting cables are connected through 180 degrees.
The endoscope adopting the scheme has the characteristics of compact structure, convenient deformation adjustment and long service life of the universal joint snake bone, and is convenient to operate and good in gesture stability in the use process.
The snake bone has the beneficial effects of compact structure, convenient deformation adjustment and long service life. The endoscope has the characteristics of the snake bone, and has good operability and good posture stability.
Drawings
FIG. 1 is a schematic view of a portion of the structure of a snake bone adjacent condyle of the invention in a natural state.
Fig. 2 is a schematic view of a portion of the structure of a snake bone adjacent condyle of the invention in an angularly adjusted state.
Fig. 3 is an enlarged view of the portion a in fig. 1 according to the present invention.
Fig. 4 is a schematic diagram of the direction control relationship of 4 angle adjustment cables in the snake bone condyle of the invention.
Fig. 5 is a schematic diagram of three states of a snake bone after a plurality of bone segments are connected in series, wherein A is a straight natural state, and B and C are two opposite states with an adjustment angle of 90 degrees.
Fig. 6 is a schematic structural view of a snake bone according to the invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings, which are not intended to limit the invention to the embodiments described.
Example 1 referring to fig. 1, 2, 3, 4, 5 and 6, a gimbaled adjustable snake bone comprises a plurality of hollow bone segments connected in sequence; the adjacent bone segments are connected with each other by adopting a spherical universal joint structure; and an elastic component 2 is arranged between the adjacent condyles, and the elastic component 2 is used for enabling the adjacent condyles to be mutually far away along the axial direction.
The bone segments are provided with flanges, and the flanges are provided with four first threading holes which are uniformly distributed on the circumference and used for threading the angle adjusting cables; the elastic component 2 is provided with a second threading hole for threading the angle adjusting cable, and two ends of the elastic component 2 are abutted on two flange opposite surfaces of the adjacent bone segments. As shown in fig. 3, both sides of the flange are provided with extended convex rings; the orifice portion of one of the two collars has a space to receive the distal end of the other.
Wherein the condyle consists of a front end condyle 1, a rear end condyle 5 and a plurality of middle condyles 3; wherein, one end of the front end condyle 1 forms a convex sphere or a concave sphere with the sphere center positioned on the axis of the front end condyle 1; a concave spherical surface or a convex spherical surface corresponding to the convex spherical surface or the concave spherical surface of the front end bone segment 1 is formed on the rear end bone segment 5, and the spherical center of the concave spherical surface or the convex spherical surface is positioned on the axis of the rear end bone segment 5; one end of the middle condyle 3 is provided with a concave spherical surface, the other end is provided with a convex spherical surface, and the spherical centers of the concave spherical surface and the convex spherical surface on the middle condyle 3 are positioned on the axis of the middle condyle 3; and all the concave spherical surfaces or the convex spherical surfaces have equal radiuses. The front end of the front end condyle 1 is fixedly connected with a lens connecting component 6; the tail end of the rear end condyle 5 is fixedly connected with a cannula 8; a rubber sleeve 7 is arranged between the cannula 8 and the lens connecting member 6, and the rubber sleeve 7 is wrapped on the periphery of all bone segments; the front end condyle 1 is provided with four angle adjusting cables 4 through four first threading holes in a penetrating way, the front ends of the angle adjusting cables 4 are fixed with the front end condyle 1, the tail ends of the angle adjusting cables 4 sequentially penetrate through a plurality of elastic members 2 and a plurality of middle condyles 3 in a staggered way, and then the control end is formed by the first threading holes of the rear end condyle 5 in a penetrating way.
The elastic component 2 is composed of a cylindrical helical compression spring, and the hollow part of the cylindrical helical compression spring is composed of the second threading hole; four elastic members 2 are arranged between adjacent bone segments, and counter bores are formed in the openings of the first threading holes; the end part of the elastic member 2 is abutted against the bottom of the counter bore.
In this embodiment, the elastic member 2 may also be formed by a bushing made of an elastomer material, or the elastic member 2 may be formed by coaxially stacking at least one washer made of an elastomer material, or a plurality of washers; the inner hole of the bushing or the gasket forms a second threading hole.
In this embodiment, the elastic member 2 may also be formed by elastic annular pads with an inner diameter larger than the spherical surface of the condyle, and four second threading holes are circumferentially distributed on each elastic annular pad to replace four springs or bushings with one elastic annular pad.
Embodiment 2, see fig. 6, an endoscope includes the adjustable snake bone of the universal joint of embodiment 1, and after the free ends of two angle adjusting cables 4 opposite through 180 ° are respectively connected, the adjusting handwheels are correspondingly arranged to perform the snake bone deformation adjustment.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An adjustable snake bone of a universal joint comprises a plurality of hollow bone segments which are connected in sequence; the bone joint is characterized in that adjacent bone joints are connected with each other by adopting a spherical universal joint structure; an elastic component (2) is arranged between the adjacent bone segments, and the elastic component (2) is used for enabling the adjacent bone segments to be far away from each other along the axial direction; the periphery of the condyle is provided with a flange, and the flange is provided with four first threading holes which are uniformly distributed on the circumference and are used for threading the angle adjusting cable; the elastic component (2) is provided with a second threading hole for threading the angle adjusting cable, and two ends of the elastic component (2) are abutted against two flange opposite surfaces of the adjacent bone segments; the two sides of the flange are provided with extended convex rings, and the orifice part of one of the two convex rings is provided with a space for receiving the distal end part of the other convex ring, so that a state that the end parts are contained in sequence can be formed between the condyles of the snake bones, and the damage to the external rubber protection piece of the snake bones is effectively avoided; the condyle consists of a front end condyle (1), a rear end condyle (5) and a plurality of middle condyles (3); wherein, one end of the front end condyle (1) forms a convex sphere or a concave sphere with the sphere center positioned on the axis of the front end condyle (1); a concave spherical surface or a convex spherical surface corresponding to the convex spherical surface or the concave spherical surface of the front end bone joint (1) is formed on the rear end bone joint (5), and the spherical center of the concave spherical surface or the convex spherical surface is positioned on the axis of the rear end bone joint (5); one end of the middle condyle (3) is provided with a concave spherical surface, the other end is provided with a convex spherical surface, and the spherical centers of the concave spherical surface and the convex spherical surface on the middle condyle (3) are positioned on the axis of the middle condyle (3); and all the concave spherical surfaces or the convex spherical surfaces have equal radiuses.
2. The adjustable snake bone of claim 1, wherein the front end of the front end bone joint (1) is fixedly connected with a lens connecting member (6); the tail end of the rear end condyle (5) is fixedly connected with a cannula (8); a rubber sleeve (7) is arranged between the cannula (8) and the lens connecting component (6), and the rubber sleeve (7) is wrapped on the periphery of all the bone segments; the front end condyle (1) is provided with four angle adjusting cables (4) in a penetrating mode through four first threading holes, the front ends of the angle adjusting cables (4) are fixed with the front end condyle (1), the tail ends of the angle adjusting cables penetrate through a plurality of elastic members (2) and a plurality of middle condyles (3) in a staggered mode in sequence, and then the control ends are formed by penetrating out of the first threading holes of the rear end condyles (5).
3. The universal joint adjustable snake bone according to claim 1 or 2, characterized in that the elastic member (2) is constituted by a cylindrical helical compression spring, the hollow of which constitutes the second threading hole; four elastic members (2) are arranged between adjacent bone segments, and counter bores are formed in the openings of the first threading holes; the end part of the elastic component (2) is abutted against the bottom of the counter bore.
4. A gimbaled adjustable snake bone according to claim 1 or 2, characterised in that the elastic member (2) consists of an elastic annular pad with an inner diameter larger than the spherical surface of the condyle.
5. An endoscope is characterized by comprising the universal joint adjustable snake bone according to any one of claims 1-4, wherein the snake bone deformation adjustment is carried out by correspondingly arranging an adjusting hand wheel after the free ends of two angle adjusting cables (4) which are 180 degrees opposite to each other are respectively connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910883975.6A CN110507275B (en) | 2019-09-17 | 2019-09-17 | Universal joint adjustable snake bone and endoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910883975.6A CN110507275B (en) | 2019-09-17 | 2019-09-17 | Universal joint adjustable snake bone and endoscope |
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| Publication Number | Publication Date |
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| CN110507275A CN110507275A (en) | 2019-11-29 |
| CN110507275B true CN110507275B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910883975.6A Active CN110507275B (en) | 2019-09-17 | 2019-09-17 | Universal joint adjustable snake bone and endoscope |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113311554B (en) * | 2021-08-02 | 2021-11-26 | 华海通信技术有限公司 | Submarine optical cable branch equipment and submarine optical cable system |
| CN114938937B (en) * | 2022-05-18 | 2024-03-08 | 湖南省华芯医疗器械有限公司 | Haulage rope pretension structure, endoscope handle and endoscope |
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| WO2015182886A1 (en) * | 2014-05-28 | 2015-12-03 | (주) 태웅메디칼 | Joint structure of endoscope |
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| CN108472025A (en) * | 2015-10-05 | 2018-08-31 | 弗莱克斯德克斯公司 | The medical treatment device of more cluster connectors with smooth articulation |
| CN208769736U (en) * | 2018-02-02 | 2019-04-23 | 杭州鑫泽源精密制品有限公司 | A kind of endoscope snake bone |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7591783B2 (en) * | 2003-04-01 | 2009-09-22 | Boston Scientific Scimed, Inc. | Articulation joint for video endoscope |
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2019
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|---|---|---|---|---|
| JP2005253900A (en) * | 2004-03-10 | 2005-09-22 | Fujita Japan Co Ltd | Head shaking device for endoscope |
| CN2808058Y (en) * | 2004-12-31 | 2006-08-23 | 东莞市艺美达电子有限公司 | Flexion type outer image formation endoscope |
| CN101449957A (en) * | 2007-12-07 | 2009-06-10 | 奥林巴斯医疗株式会社 | Holding cable, and observation apparatus and endoscope apparatus including holding cable |
| CN103110456A (en) * | 2011-11-16 | 2013-05-22 | 柯惠Lp公司 | Surgical device with powered articulation |
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| CN110507275A (en) | 2019-11-29 |
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