CN212281292U - Endoscope bending part - Google Patents
Endoscope bending part Download PDFInfo
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- CN212281292U CN212281292U CN202021365117.7U CN202021365117U CN212281292U CN 212281292 U CN212281292 U CN 212281292U CN 202021365117 U CN202021365117 U CN 202021365117U CN 212281292 U CN212281292 U CN 212281292U
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- snake bone
- bone joint
- endoscope
- bending
- guide surface
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- 238000005452 bending Methods 0.000 title claims abstract description 62
- 241000270295 Serpentes Species 0.000 claims abstract description 150
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 149
- 238000012545 processing Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 239000013307 optical fiber Substances 0.000 description 6
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000003445 biliary tract Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 210000003708 urethra Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Abstract
The utility model provides an endoscope flexion, including operating line and a plurality of snake bone joint, wherein: a plurality of snake bone joints are sequentially hinged to form a bending unit; the operation wire operates the bending unit to form bending in at least two directions; at least one part of the snake bone joints are provided with a limiting guide surface for limiting the operating wire. The utility model discloses snake bone joint's processing technology is simple, has broken through prior art snake bone joint processing technology's wall thickness size limit greatly, and intensity is high moreover, the yields is high, with low costs. Although the hinge device corresponds to the traction hole with the built-in traction wire, the hinge device is at a certain distance from the traction hole, and the traction wire is not easy to bend and fatigue damage. The utility model discloses realize the inner chamber space and utilize the maximize. The utility model discloses a two directions are crooked to the different combinations of snake bone joint, also can realize the four directions crooked, have broken through the outside diameter limit of the crooked endoscope of current two directions and the crooked endoscope of four directions greatly.
Description
Technical Field
The utility model relates to an endoscope field specifically, relates to an endoscope flexion.
Background
The endoscope has an elongated insertion portion that is insertable into a body cavity, a bending portion is provided on a distal end side of the insertion portion, and a tip portion is provided on a distal end side of the bending portion. The head end part is at least internally provided with an imaging unit, an image transmission unit and an illumination unit. The bending portion is operated by an operation device provided in the operation portion to perform a bending operation by operating the traction wire.
Generally, the bending portion of the endoscope is composed of a plurality of snake bone joints connected with each other. In order to achieve a bending action in the bending section, the snake bone joint must have several basic features: the snake bone joint is provided with a traction hole for passing through a traction wire; adjacent snake joints are connected by an articulation which allows them to pivot relative to each other; the snake bone joint has enough lumen space to pass through wires, optical fibers, etc.
Conventionally, there is known an endoscope bending portion in which a plurality of cylindrical snake bone joints are connected to each other rotatably and coaxially. As a method for connecting the snake bone joints, for example, caulking is used. That is, a pair of tongue pieces are projected on both end surfaces of the cylindrical portion of the snake bone joint in a central axis symmetry manner, and the tongue pieces of the adjacent two snake bone joints are superposed on each other and are rotationally riveted and fixed. Refer to fig. 1. However, it is very difficult to adopt a fastening method of caulking in a small diameter endoscope. Moreover, the riveting structure not only occupies the inner cavity space of the snake bone joint, but also can locally increase the external dimension of the bending part. When the required diameter of the small-diameter endoscope is small to a certain degree, the snake bone joint cannot have enough inner cavity space for passing through electric wires, optical fibers and the like; if the outer diameter of the endoscope locally exceeds the required diameter, the insertion performance of the endoscope is impaired.
When the required diameter of the small diameter endoscope is small to some extent, such as 2.4mm, the presently known bending portion of the endoscope, and yet another configuration, referring to fig. 2 and 3, each of the serpentine joints includes an articulation means which mates with the articulation means of the adjacent serpentine joint; four traction holes are also formed in the circumferential direction of each snake bone joint so as to penetrate through traction wires; this articulated mounting and two traction holes in opposite directions are for corresponding the setting to increase articulated mounting's cooperation size, prevent faults such as dislocation, disjointing of adjacent snake bone joint, lead to the flexion to become invalid. However, the above proposal is limited by the processing technique of the snake bone joint, the wall thickness dimension of each part has processing limit, and the bendable endoscope produced by using the snake bone with the structure is known to be 2.4mm at minimum. Because the hinge device corresponds to the traction hole with the built-in traction wire, the traction wire at the hinge device is easy to bend and fatigue damage.
The utility model patent of the prior art CN 105911687a discloses an endoscope bending part, which is shown in fig. 4 and 5 and comprises a snake bone body; the snake bone body comprises a plurality of snake bone joints which are hinged in sequence; a hinged support is arranged in the inner cavity of the snake bone joint; the two side ends of the hinged support part are connected with the inner wall surface of the snake bone joint to divide the inner cavity into a first concealed space and a second concealed space; one end of the hinged support is provided with a first hinged piece, and the other end of the hinged support is provided with a second hinged piece matched with the first hinged piece; and a plurality of traction holes which axially penetrate through the hinge support are formed in the hinge support. The utility model discloses get rid of built-in connecting wire's of snake bone joint traction hole and connecting wire among the prior art, the utility model discloses well pull wire had both undertaken the original function of pull wire, still undertaken the function of connecting wire, had reduced part quantity, had increased interior concealed space. The hinge device of the scheme is arranged between two traction holes passing through the traction wire instead. In this way, both the wall thickness forming the traction bore is ensured and is used to form the hinge. However, the technical scheme has the defects of complex processing technology, high difficulty, low strength, low yield, high cost and the like of the snake bone joint, and the inner cavity space is wasted too much, so that the snake bone joint can only be bent in two directions due to the fact that more wires, optical fibers, working channels and the like cannot be passed through to the maximum extent.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims at providing an endoscope bending part.
According to the utility model provides a pair of endoscope flexion, including operating line and a plurality of snake bone joint, wherein:
a plurality of snake bone joints are sequentially hinged to form a bending unit;
the operation wire operates the bending unit to complete the bending action;
at least one part of the snake bone joints are provided with a limiting guide surface for limiting the operating wire.
Preferably, both sides of one end face of each snake bone joint are provided with first notches, a clamping block matched with the first notches is arranged at the corresponding position of the other end face of each snake bone joint, and the clamping block of one snake bone joint is clamped into the first notch of the adjacent snake bone joint and can be hinged and rotated in the first notch.
Preferably, the side surface of the snake bone joint is provided with at least one limit guide surface, the limit guide surface is recessed from the side surface of the snake bone joint to the axial direction of the snake bone joint, and the limit guide surface is arranged between two first notches along the circumferential direction of the snake bone joint.
Preferably, the snake bone joint further comprises a connecting line which is fixedly connected with the inner walls corresponding to the clamping blocks of the plurality of snake bone joints.
Preferably, the other two sides of one end surface of the snake bone joint are provided with second gaps which are the same as the first gaps.
Preferably, the side surface of the snake bone joint is provided with a limit guide surface, and the position of the limit guide surface can be any one of the following three modes:
mode 1: a limiting guide surface is arranged between each first notch and the corresponding fixture block;
mode 2: limiting guide surfaces are arranged at the positions, which are staggered with each first notch at a set angle in the circumferential direction of the snake bone joint;
mode 3: the position between each first gap and the corresponding fixture block, and the position dislocated with each first gap in the circumferential direction of the snake bone joint at a set angle are provided with a limiting guide surface.
Preferably, when the fixture blocks of the adjacent snake bone joints are correspondingly arranged, the bending unit forms two-direction bending;
when the positions of the clamping blocks of the adjacent snake bone joints are arranged in a staggered mode, the bending units are bent in four directions.
Preferably, the other end surface of the snake bone joint and the two side surfaces of the fixture block form a set included angle with each other.
Preferably, the middle area of the outer surface of the limiting guide surface forms a partial inner cylindrical surface, and the corresponding complete cylinder of the partial inner cylindrical surface is tangent to the inner wall of the snake bone joint.
Preferably, the snake bone joint is arranged in a hollow mode.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the processing technique of the snake bone joint of the utility model is simple, which greatly breaks through the wall thickness size limit of the processing technique of the snake bone joint in the prior art, and has high strength, high yield and low cost;
2. the hinge device of the utility model is corresponding to the traction hole with the built-in traction wire, and the hinge device is at a certain distance from the traction hole, so that the traction wire is not easy to bend and fatigue damage;
3. the utility model realizes the extremely simplified design of the elements forming the bending part of the endoscope, maximizes the utilization of the inner cavity space, has no waste except the minimum necessary wall thickness, and perfectly solves the contradiction of the maximization of the inner cavity of the endoscope with the minimized outer diameter through more wires, optical fibers and working channels for many years;
4. the utility model discloses a two directions are crooked in the different combinations of snake bone joint, also can realize four directions crooked, have broken through the outer diameter limit of the crooked endoscope of current two directions and four directions crooked endoscope greatly, can realize theoretical outer diameter limit with engineering.
5. The utility model discloses a flexion, as long as the combination through one kind or two kinds of snake bone joint, can realize that two directions are crooked or four directions are crooked, the processing of snake bone joint is simple, the assembly of flexion is simple, the scale production of the snake bone joint of being convenient for and flexion, the cost is less than prior art's various flexion far away, can realize theoretical cost limit with engineering, the perfect low cost and the high performance quality's of having solved medical disposable endoscope current flexion technique contradiction.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIGS. 1 to 5 are schematic structural views of a bending portion of a conventional endoscope;
fig. 6 is a schematic structural view of a first embodiment of a bending portion of an endoscope according to the present invention;
FIG. 7 is a front view of a first embodiment of the bending portion of the endoscope of the present invention and a schematic structural view of a single snake bone joint;
fig. 8 is a schematic structural view of a second embodiment of the bending portion of the endoscope of the present invention;
FIG. 9 is a front view of a second embodiment of the bending portion of the endoscope of the present invention and a schematic structural view of a single snake bone joint;
fig. 10 is a schematic structural view of a third embodiment of a bending portion of an endoscope according to the present invention;
fig. 11 is a schematic structural view of a fourth embodiment of the bending portion of the endoscope of the present invention;
FIG. 12 is a front view of a fourth embodiment of the bending portion of the endoscope of the present invention and a schematic structural view of a single snake bone joint;
fig. 13 is a schematic structural view of a fifth embodiment of the bending portion of the endoscope of the present invention;
fig. 14 is a schematic structural view of a single snake bone joint in a fifth embodiment of the bending portion of the endoscope of the present invention.
The figures show that:
operating line 1
Second notch 4
Limiting guide surface 6
Through-hole 7
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
The requirement of the ultra-fine diameter bendable endoscope is that the outer diameter is minimized so as to easily enter the urethra, biliary tract, lacrimal passage, cardiac blood vessel and the like of a human body, and an ultra-small inner cavity and the like of the industries such as aerospace military industry and the like. But the lumen is maximized to allow for the passage of relatively many wires, optical fibers, working channels, etc. The more the wires are, the higher the pixel number of the camera can be, and the clearer the image is; the more optical fibers, the higher the illumination intensity; the larger the working channel is, the more functional the surgical instruments can be used, thus being beneficial to minimally invasive surgery and the like. To the above problem, the utility model discloses creatively proposes: each snake bone joint comprises a hinge device which is matched with the hinge device of the adjacent snake bone joint; at least two traction holes are formed in the circumferential direction of each snake bone joint so as to penetrate through traction wires; the hinge device and the two opposite traction holes are correspondingly arranged or are arranged in a 90-degree staggered manner; the hinge device is at a certain distance from the traction hole; the traction hole is tangent to the inner hole of the snake bone joint, the gap between the traction hole and the traction line is not larger than the wall thickness of the snake bone joint, and the failure of the bending part caused by the dislocation, disjointing and other faults of adjacent snake bone joints is prevented.
Example 1:
specifically, as shown in fig. 6 and 7, according to the present invention, there is provided a first embodiment comprising an operation wire 1 and a plurality of snake bone joints 2, wherein: a plurality of snake bone joints 2 are sequentially hinged to form a bending unit; the operation wire 1 operates the bending unit to form a bend in two directions. One end face of the snake bone joint 2 is provided with two first gaps 3 and two second gaps 4, the two first gaps 3 and the two second gaps 4 are distributed in a staggered mode at equal intervals in the circumferential direction, and the first gaps 3 are identical to the second gaps 4. A clamping block 5 is arranged at the position corresponding to the two first gaps 3 on the other end surface of the snake bone joint 2.
The snake bone joint 2 is provided with a limit guide surface 6 for limiting an operation line, the snake bone joint 2 with two structures exists in the embodiment, the limit guide surface 6 of the first snake bone joint 2 is arranged between the first notch 3 and the fixture block 5, and the limit guide surface 6 of the second snake bone joint 2 is arranged at a position which is staggered by 90 degrees in the circumferential direction of the snake bone joint 1 with the first notch 3. When concrete connection, the snake bone joints 2 of two kinds of structures are in staggered connection, and the fixture blocks 5 of the snake bone joints 2 of two kinds of structures are located at corresponding positions, the control line sequentially penetrates through the inner wall of the first kind of snake bone joint 2, and the limit guide surface 6 of the second kind of snake bone joint 2 realizes the control of the bent angles in two directions.
Example 2:
as shown in fig. 8 and 9, according to the present invention, there is provided a second embodiment comprising an operation wire 1 and a plurality of snake bone joints 2, wherein: a plurality of snake bone joints 2 are sequentially hinged to form a bending unit; the operation wire 1 operates the bending unit to form a bend in two directions. One end face of the snake bone joint 2 is provided with two first gaps 3 and two second gaps 4, the two first gaps 3 and the two second gaps 4 are distributed in a staggered mode at equal intervals in the circumferential direction, and the first gaps 3 are identical to the second gaps 4. A clamping block 5 is arranged at the position corresponding to the two first gaps 3 on the other end surface of the snake bone joint 2.
Be provided with the spacing guide surface 6 to the operating wire is spacing on snake bone joint 2, only have the snake bone joint 2 of a structure in this embodiment, the spacing guide surface 6 of snake bone joint 2 sets up between first breach 3 and fixture block 5, and when concrete connection, adjacent snake bone joint 2 is crisscross 90 and is connected to fixture block 5 of adjacent snake bone joint 2 is in crisscross 90 positions, and the operating wire passes spacing guide surface 6 of looks spaced snake bone joint 2 in proper order, and has realized that the bent angle of four directions is controlled.
Example 3:
as shown in fig. 10, according to the present invention, a third embodiment is provided, which comprises an operation wire 1 and a plurality of snake bone joints 2, wherein: a plurality of snake bone joints 2 are sequentially hinged to form a bending unit; the operation wire 1 operates the bending unit to form a bend in two directions. One end face of the snake bone joint 2 is provided with two first gaps 3 and two second gaps 4, the two first gaps 3 and the two second gaps 4 are distributed in a staggered mode at equal intervals in the circumferential direction, and the first gaps 3 are identical to the second gaps 4. A clamping block 5 is arranged at the position corresponding to the two first gaps 3 on the other end surface of the snake bone joint 2.
The snake bone joint 2 is provided with a limit guide surface 6 for limiting the operating wire, the limit guide surface 6 of the snake bone joint 2 in the embodiment is arranged between the first notch 3 and the fixture block 5 and at a position which is 90 degrees staggered with the first notch 3 in the circumferential direction of the snake bone joint 1, when in specific connection, the adjacent snake bone joints 2 can be connected by 90 degrees in a staggered manner, the fixture blocks 5 of the adjacent snake bone joints 2 are at 90 degrees in a staggered manner, the operating wire sequentially passes through the limit guide surface 6 of the snake bone joints 2, and the four-direction bend angle control is realized. The adjacent snake bone joints 2 can also be correspondingly connected, the fixture blocks 5 of the adjacent snake bone joints 2 are positioned at the same straight line position, the control line sequentially passes through the limiting guide surfaces 6 of the snake bone joints 2, and the control of the bending angles in two directions is realized.
Example 4:
as shown in fig. 11 and 12, according to the present invention, there is provided a fourth embodiment comprising an operation wire 1 and a plurality of snake bone joints 2, wherein: a plurality of snake bone joints 2 are sequentially hinged to form a bending unit; the operation wire 1 operates the bending unit to form a bend in two directions. One end face of the snake bone joint 2 is provided with two first notches 3 which are oppositely arranged, and the other end face of the snake bone joint 2 is provided with a clamping block 5 at the position corresponding to the two first notches 3.
The snake bone joint 2 of the embodiment is provided with two types, the first type of snake bone joint 2 is provided with a limit guide surface 6 for limiting an operation line, the limit guide surface 6 of the snake bone joint 2 is provided with two types, and the limit guide surface 6 is arranged in the middle of two first gaps 2 in the circumferential direction of the snake bone joint 1 and is arranged oppositely. The second snake bone joint 2 is not provided with a limit guide surface 6. When in specific connection, the two snake bone joints 2 are connected in a staggered mode, the positions of the clamping blocks 5 of the adjacent snake bone joints 2 are in a linear direction, the control wire sequentially penetrates through the limiting guide surface 6 of the first snake bone joint 2 and the inner wall of the second snake bone joint 2, and the control of the bending angles in the two directions is realized.
Example 5:
as shown in fig. 13 and 14, according to a fifth embodiment provided by the present invention, comprising an operation wire 1 and a plurality of snake bone joints 2, wherein: a plurality of snake bone joints 2 are sequentially hinged to form a bending unit; the operation wire 1 operates the bending unit to form a bend in two directions. One end face of the snake bone joint 2 is provided with two first notches 3 which are oppositely arranged, and the other end face of the snake bone joint 2 is provided with a clamping block 5 at the position corresponding to the two first notches 3.
The snake bone joint 2 of the embodiment is provided with a limit guide surface 6 for limiting the operation wire, only one limit guide surface 6 is arranged on the snake bone joint 2, and the limit guide surface 6 is arranged between two first notches 2 along the circumferential direction of the snake bone joint 1. When in specific connection, the adjacent snake bone joints 2 are connected in a rotating mode by 180 degrees, the positions of the clamping blocks 5 of the adjacent snake bone joints 2 are in a straight line direction, the control wires sequentially penetrate through the limiting guide surface 6 of the first snake bone joint 2 and the inner wall of the second snake bone joint 2 in a staggered mode, and the control of the bending angles in two directions is achieved.
The utility model discloses a two directions are crooked to the different combinations of snake bone joint, also can realize the four directions crooked, have broken through the outside diameter limit of the crooked endoscope of current two directions and the crooked endoscope of four directions greatly.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An endoscope bending section comprising an operation wire and a plurality of snake bone joints, wherein:
a plurality of snake bone joints are sequentially hinged to form a bending unit;
the operation wire operates the bending unit to complete the bending action;
at least one part of the snake bone joints are provided with a limiting guide surface for limiting the operating wire.
2. The bending portion of an endoscope as claimed in claim 1, wherein first notches are formed on two sides of one end surface of each snake bone joint, a clamping block matched with the first notch is arranged at a corresponding position on the other end surface of each snake bone joint, and the clamping block of one snake bone joint is clamped into the first notch of the adjacent snake bone joint and can be hinged and rotated in the first notch.
3. The endoscope bending section according to claim 2, wherein the side surface of the snake bone joint is provided with at least one stopper guide surface recessed from the side surface of the snake bone joint in the axial direction of the snake bone joint, the stopper guide surface being provided between two first notches in the circumferential direction of the snake bone joint.
4. The bending portion of an endoscope according to claim 2, further comprising a connecting wire fixedly connected to inner walls of the plurality of segments of the snake bone joint.
5. The endoscope bending section according to claim 2, wherein second notches identical to the first notches are provided on the other two sides of one end surface of the snake bone joint.
6. The bending portion of an endoscope according to claim 5, wherein a side surface of the snake bone joint is provided with a position-limiting guide surface, and the position of the position-limiting guide surface can be any one of the following three types:
mode 1: a limiting guide surface is arranged between each first notch and the corresponding fixture block;
mode 2: limiting guide surfaces are arranged at the positions, which are staggered with each first notch at a set angle in the circumferential direction of the snake bone joint;
mode 3: the position between each first gap and the corresponding fixture block, and the position dislocated with each first gap in the circumferential direction of the snake bone joint at a set angle are provided with a limiting guide surface.
7. The endoscopic flexure of claim 6,
when the clamping blocks of the adjacent snake bone joints are correspondingly arranged, the bending units form two-direction bending;
when the positions of the clamping blocks of the adjacent snake bone joints are arranged in a staggered mode, the bending units are bent in four directions.
8. The bending portion of an endoscope according to claim 2, wherein the other end surface of the snake bone joint and the surfaces of the two sides of the fixture are at a predetermined angle.
9. The endoscopic flexure of claim 1, wherein the mid-region of the outer surface of the stop guide surface forms a partial cylindrical surface with a corresponding full cylinder tangent to the inner wall of the snake bone joint.
10. The endoscope bending section of claim 1, wherein the snake bone joint is hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021365117.7U CN212281292U (en) | 2020-07-13 | 2020-07-13 | Endoscope bending part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021365117.7U CN212281292U (en) | 2020-07-13 | 2020-07-13 | Endoscope bending part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212281292U true CN212281292U (en) | 2021-01-05 |
Family
ID=73936474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021365117.7U Active CN212281292U (en) | 2020-07-13 | 2020-07-13 | Endoscope bending part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212281292U (en) |
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2020
- 2020-07-13 CN CN202021365117.7U patent/CN212281292U/en active Active
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Effective date of registration: 20240122 Address after: Room 3554, 3rd Floor, Building 3, No. 25 Yanqi South Fourth Street, Yanqi Economic Development Zone, Huairou District, Beijing, 101407 Patentee after: Zhongke Optoelectronics (Beijing) Intelligent Technology Co.,Ltd. Guo jiahuodiqu after: Zhong Guo Address before: 201100 rooms 401, 402, 403, 405, building 5, 439 Jinglian Road, Minhang District, Shanghai Patentee before: SHANGHAI EDA PHOTOELECTRONIC TECHNOLOGY Co.,Ltd. Guo jiahuodiqu before: Zhong Guo |