CN109497915A - Curvature section of endoscope and endoscope - Google Patents
Curvature section of endoscope and endoscope Download PDFInfo
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- CN109497915A CN109497915A CN201811594822.1A CN201811594822A CN109497915A CN 109497915 A CN109497915 A CN 109497915A CN 201811594822 A CN201811594822 A CN 201811594822A CN 109497915 A CN109497915 A CN 109497915A
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- groove
- curved block
- endoscope
- protrusion
- annular
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- 238000005520 cutting process Methods 0.000 claims abstract description 27
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 230000006641 stabilisation Effects 0.000 claims abstract description 7
- 238000011105 stabilization Methods 0.000 claims abstract description 7
- 230000003139 buffering effect Effects 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims description 60
- 238000009826 distribution Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims 1
- 241000270295 Serpentes Species 0.000 description 7
- 210000000988 bone and bone Anatomy 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004080 punching Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
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- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 241001442589 Convoluta Species 0.000 description 1
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- 230000006835 compression Effects 0.000 description 1
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- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 210000004072 lung Anatomy 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
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
Abstract
The present invention provides a kind of curvature section of endoscope and endoscopes.Curvature section of endoscope includes the curved block of multiple head and the tail connections, it is rotatably connected between two neighboring curved block by interconnecting piece, and interconnecting piece includes groove and protrusion, protrusion is rotatably contained in groove, the end face of curved block is respectively equipped with bearing surface in the two sides of interconnecting piece, and protrusion relatively rotates in groove and arrives maximum angle, and the bearing surface of adjacent two curved block abuts against, interconnecting piece is equipped with position limiting structure, and position limiting structure is contained in protrusion stabilization in groove.Curved block is equipped with cutting line close to endface, it is pressing part between the end face and cutting line of curved block, pressing part is recessed towards the inside of curved block, forms the guide part for wearing draught line, dashpot is equipped between cutting line and the other end face of curved block, dashpot is for buffering stamping pressure.Curvature section of endoscope and endoscope are able to maintain between two curved blocks and are stably connected with.
Description
Technical field
The present invention relates to a kind of endoscope components, especially a kind of curvature section of endoscope and endoscope.
Background technique
Sight glass is a kind of very widely used medical treatment and industrial detection instrument, bending section be pulled by wirerope it is multiple
The method for the snake Bones and joints being connected with each other realizes bending deflecting.Adjacent snake Bones and joints connect to form hinge by closing-up,
To realize relative rotation.
But since the manufacture of closing-up connection and the required precision of assembly technology are higher, if production technology or behaviour
Make technique slightly error, then there are certain defects for the riveting that will lead between two snake Bones and joints.Particularly with internal diameter compared with
Small thin diameter endoscope still just seems more tired using the fixed connection method of rivet to realize between two snake Bones and joints
It is difficult.
Therefore, the smooth production for realization to the lesser endoscope of internal diameter, the She Guguan to develop production out without rivet
It saves, between two adjacent snake Bones and joints is riveted by rivet.Simultaneously as be not provided with rivet, then two it is adjacent
Snake Bones and joints between bonding strength it is weaker.In use, junction is easy to happen between two neighboring snake Bones and joints
Deformation or displacement, cause to can not achieve relative rotation between two adjacent snake Bones and joints, influence the normal use of endoscope.
Summary of the invention
The purpose of the present invention is to provide a kind of bendings of endoscope for being able to maintain and being stably connected between two curved blocks
Portion and endoscope.
A kind of curvature section of endoscope passes through company between two neighboring curved block including the curved block that multiple head and the tail connect
Socket part is rotatably connected, and the interconnecting piece includes groove and protrusion, and the protrusion is rotatably contained in the groove, described
The end face of curved block is respectively equipped with bearing surface in the two sides of the interconnecting piece, and the protrusion is relatively rotated in the groove to most
The bearing surface of wide-angle, adjacent two curved block abuts against, and the interconnecting piece is equipped with position limiting structure, and the position limiting structure makes institute
Protrusion stabilization is stated to be contained in the groove；
The curved block is equipped with cutting line close to endface, is punching press between the end face of the curved block and the cutting line
Portion, the pressing part are recessed towards the inside of the curved block, form the guide part for wearing draught line, the cutting line and
Dashpot is equipped between the other end face of the curved block, the dashpot is for buffering stamping pressure.
In a wherein embodiment, the position limiting structure includes the locking part set on the groove two sides, the protrusion
Two sides be equipped with the sliding slot that cooperate with the locking part, the two sides of the groove are equipped with locking part, and the locking part is along the cunning
Slidably, the open end of the sliding slot is equipped with limiting section to slot, and the locking part can mutually be engaged with the limiting section, so that described
Locking part is limited in the sliding slot.
In a wherein embodiment, the locking part is convex wing, and the convex wing is sector.
In a wherein embodiment, the position limiting structure includes set on the annular arm of the two sides of the protrusion and set on institute
The annular groove of the two sides of groove is stated, the annular arm correspondence is contained in the annular groove, and the annular arm is rotatably contained in
In the annular groove, the annular arm is more than or equal to the protrusion and institute along the corresponding angle in annular groove arc sliding track
State the maximum angle of groove relative rotation.
In a wherein embodiment, the annular arm be it is multiple, the annular groove be it is multiple.
In a wherein embodiment, multiple annular arms are identical as central angle corresponding to multiple annular grooves.
In a wherein embodiment, the length of the dashpot is greater than the length of the cutting line.
In a wherein embodiment, the cutting line and the dashpot are distributed about same axisymmetrical.
A kind of endoscope, the draught line including bending section and in the bending section, the draught line are arranged in described
In guide part, multiple curved blocks are connected in series in the draught line.
In a wherein embodiment, the endoscope includes sebific duct, and the sebific duct is directly sleeved on the bending section
Outside, the bending section include the curved block of multiple head and the tail connections, and the bending section supports the sebific duct, the bending section both ends
Lateral wall of the lateral wall respectively with the sebific duct both ends be directly tightly connected.
Above-mentioned curvature section of endoscope is not provided with rivet, is connected, was made by interconnecting piece between two neighboring curved block
Journey is simple, easy to accomplish.Also, interconnecting piece by setting position limiting structure, make protrusion stabilization be contained in groove, avoid protrusion from
It is detached from groove.Therefore, even if the bonding strength between two curved blocks is also protected even if curvature section of endoscope does not use rivet
It holds relatively by force, will not influence the normal use of endoscope.
Detailed description of the invention
Fig. 1 is the perspective view of the curvature section of endoscope of present embodiment；
Fig. 2 is the cross-sectional view of the endoscope of present embodiment；
Fig. 3 is the structural schematic diagram of the bending state of bending section shown in FIG. 1；
Fig. 4 is the schematic perspective view of the curved block of bending section shown in FIG. 1；
Fig. 5 is the perspective view of the curvature section of endoscope of another embodiment；
Fig. 6 is the schematic perspective view of the curved block of bending section shown in FIG. 1；
Fig. 7 is the side view of curved block shown in fig. 6.
The reference numerals are as follows: 10, curved block；11 interconnecting pieces；2, groove；121, annular arm；122, locking part；125,
Convex wing；13, raised；131, sliding slot；132, limiting section；133, end face；14, bearing surface；15, annular arm；16, annular groove；17, auxiliary
Help arm；18, auxiliary tank；19, cutting line；191, pressing part；192, guide part；193, dashpot.
Specific embodiment
Although the present invention can easily show as various forms of embodiments, it is shown in the accompanying drawings and in this theory
What be will be explained in bright book is only some of specific embodiments, while being understandable that this specification is construed as
The principle of the invention it is exemplary illustrated, and be not intended to limit the invention to it is illustrated herein as.
A feature pointed in this specification shall illustrate wherein the one of an embodiment of the invention as a result,
A feature, rather than imply that each embodiment of the invention must have illustrated feature.Further it is to be noted that be this
Specification describes many features.Although certain features can be combined to show possible system design, these
Feature can also be used for other combinations that explanation is not known.As a result, unless otherwise indicated, illustrated combination is not intended to limit
System.
In the embodiments shown in the drawings, the instruction (such as upper, lower, left, right, front and rear) in direction is for explaining this hair
The structure of bright various elements and movement are not absolute but opposite.When these elements are in position shown in the drawings,
These explanations are suitable.If the explanation of the position of these elements changes, the instruction in these directions is also correspondingly
Change.
Below in conjunction with the attached drawing of this specification, better embodiment of the invention is further described in detail.
Referring to Figure 1, the present invention proposes a kind of endoscope and curvature section of endoscope.
The endoscope of present embodiment includes bending section 1 and the draught line in bending section 1.Draught line draws bending section
1, bending section 1 is bent, the purpose that traction bending section 1 is bent is played.
Fig. 2 is referred to, endoscope further includes sebific duct 2.Sebific duct 2 is directly sleeved on the outside of bending section 1.Endoscope does not need
Steel mesh is set.There are gaps between bending section 1 and sebific duct 2.Bending section 1 supports sebific duct 2.Sebific duct 2 has certain flexibility, sebific duct
2 can be bent with bending section 1.Bending section 1 includes the curved block 10 of multiple head and the tail connection.The lateral wall at 1 both ends of bending section is distinguished
It is directly tightly connected with the lateral wall at 2 both ends of sebific duct.
Sebific duct 2 is Nian Jie by sealant layer with the both ends of bending section 1.Sealant be directly arranged at the inner sidewall of sebific duct 2 with
Between curved lateral wall.Sealant layer can guarantee the leakproofness between sebific duct 2 and bending section 1.
Sebific duct 2 can be fluorine rubber-pipe.The intensity and flexibility of fluorine rubber-pipe can satisfy requirement.
Sebific duct 2 is directly set in the outside of bending section 1, in the case where full load full angle is bent 180 degree, fluorubber
Pipe can bear 150 bendings and not rupture.In conventional endoscope inspection, generally 30 minutes, enter between inspection containing patient to out
The All Time come, it is assumed that doctor checks that whole process is all observed using full angle, and 5 times per minute, this speed has been doctor behaviour
Than faster frequency in work, 30 minutes namely 150 times bendings, furthermore what we tested is one direction 150 times, actual use
In be four direction, each direction is likely to be bent.Therefore, the endoscope of present embodiment, which covers practical operation, to go out
Existing frequency number, is not provided with steel mesh layer, and sebific duct 2 will not be broken by the teeth.
The internal diameter of sebific duct 2 is greater than the outer diameter of bending section 1, and there are gaps between sebific duct 2 and bending section 1.Gap can make
Bending section 1 can free bend, avoid sebific duct 2 to bending section 1 generate constraint active force.
Also, the inner sidewall of sebific duct 2 is equipped with wearing layer.Wearing layer can be to avoid bending section 1 when 2 inside of sebific duct is curved
It waits and repeatedly friction occurs between the inner sidewall of sebific duct 2, wear sebific duct 2, influence the service life of sebific duct 2.
Wearing layer is coating.Coating can guarantee that sebific duct 2 can be with bending section 1 to avoid the flexibility and toughness for influencing sebific duct 2
Free bend meets the normal use requirement of endoscope.
The endoscope of present embodiment is not provided with steel mesh relative to traditional endoscope, also can satisfy making for endoscope
Use demand.Also, the endoscope of present embodiment can fundamentally solve the problems, such as that the broken end of steel mesh punctures sebific duct 2, guarantee
Endoscope can be used safely.It is not provided with steel mesh, not only can simplify the structure of endoscope, and installation settings steel mesh can be saved
Operational sequence, save the cost.
Specifically in the present embodiment, interconnecting piece 11 includes groove 12 and protrusion 13.Protrusion 13 is rotatably contained in groove
In 12.Groove 12 is adapted with the shape of protrusion 13, so that protrusion 13 can be limited and is contained in groove 12.And groove 12
Open end is shunk, and is detached from out of groove 12 to avoid protrusion 13.Specifically, groove 12 is circular groove 12, the shape of protrusion 13
For circle.Also, since protrusion 13 and groove 12 are located on the annular sidewall of curved block 10, then protrusion 13 all has with groove 12
Radian.Since the inner diameter size of two neighboring curved block 10 is identical, then protrusion 13 is identical as the crooked radian size of groove 12.
The interconnecting piece 11 of one of curved block 10 can be groove 12 and be also possible to protrusion 13, as long as connected to it another
The interconnecting piece 11 of one curved block 10 being capable of matched connection.For example, the interconnecting piece 11 of a curved block 10 is groove
When 12, then the cooperation of adjacent flex block 10 is equipped with protrusion 13, as long as two neighboring curved block 10 can be made to be cooperatively connected.
Specifically in the present embodiment, one end of curved block 10 is set there are two groove 12, and the other end sets that there are two protrusions 13.
Therefore, the shape of each curved block 10 is consistent shape.Multiple curved blocks 10 arrange manufacture according to unified mode, side
Just the realization of manufacturing process.
And two groove 12 be located along the same line, and two protrusions 13 are located along the same line, the straight line where two groove 12
It is mutually perpendicular to the straight line where two protrusions 13.When adjacent three curved blocks 10 relatively rotate, above-mentioned four groups recessed
Slot 12 and protrusion 13 cooperate, and adjacent three curved blocks 10 interconnecting piece 11 interconnected is located on four parallel lines.Therefore,
Above-mentioned bending section can be rotated on four direction, can the more freely accurately distortion of adjustment bending section, angle of rotation
Degree.Tool is suitable in the biggish cavity of internal diameter there are four the bending section of rotation direction, such as enteric cavity, gastral cavity etc..
It is appreciated that adjacent three curved blocks 10 interconnecting piece 11 interconnected is located on two parallel lines.It is then above-mentioned curved
Pars convoluta can be rotated in two directions, then the rotational angle of bending section more convenient can control.There are two rotations for tool
The bending section in direction is suitable in the lesser cavity of internal diameter, such as lung cavity.
The end face of curved block 10 is respectively equipped with bearing surface 14 in the two sides of interconnecting piece 11, when the two of two neighboring curved block 10
When a bearing surface 14 mutually supports, then two curved blocks 10 stop operating, then reach maximum between two curved blocks 10
Angle.Protrusion 13 rotates in groove 12, and when the bearing surface 14 of adjacent two curved block 10 abuts against, protrusion 13 stops turning
It is dynamic, reach the maximum angle that protrusion 13 is relatively rotated with groove 12.
Fig. 3 is referred to, specifically in the present embodiment, bearing surface 14 is arc-shaped concave.When bearing surface 14 is mutual two-by-two
When supporting, arc-shaped concave can make two-by-two bearing surface 14 keep larger area contact, enable two curved blocks 10 compared with
Stabilization is held in position.
The minimum point and interconnecting piece 11 of arc-shaped concave are opposite.When the minimum point of the bearing surface 14 of two curved blocks 10 is mutual
When supporting, then maximum angle is formed between the central axis A-A and central axis B-B of two neighboring curved block 10.Maximum folder
The angular dimension at angle is to be designed to get according to the use demand of endoscope, for different model and different use demand
Endoscope, the maximum angle between the central axis of two neighboring curved block 10 can also be different.
Also, 14 rounded corner of bearing surface.The surface that bending section can be improved in 14 one side of bearing surface after rounded corner is smooth
Degree avoids the sharp incline of bearing surface 14 from influencing the movement of endoscope.Also, when two bearing surfaces 14 mutually support
Wait, can be interfered between the bearing surface 14 after rounded corner to avoid between two bearing surfaces 14, guarantee two curved blocks 10 it
Between formation corner dimension it is consistent, improve the bending precision of endoscope.
Protrusion 13 relatively rotates in groove 12 and arrives maximum angle, and the bearing surface 14 of adjacent two curved block 10 abuts against, makes
It is in maximum bend angle between two curved blocks 10 and enters lockup state.
Interconnecting piece is equipped with position limiting structure, and position limiting structure is contained in protrusion stabilization in groove.Specifically in the present embodiment,
Position limiting structure includes the annular groove set on the annular arm of the two sides of protrusion and set on the two sides of groove, and annular arm correspondence is contained in ring
In shape slot, annular arm is rotatably contained in annular groove, and annular arm is greater than along the corresponding angle in annular groove arc sliding track etc.
In the maximum angle that protrusion is relatively rotated with groove.
Fig. 1 and Fig. 4 is please referred to, the two sides of protrusion 13 are respectively equipped with annular arm 15, and the two sides of groove 12 are respectively equipped with annular
Slot 16.The correspondence of annular arm 15 is contained in annular groove 16.Annular arm 15 is rotatably contained in annular groove 16.
It is connected between the curved block 10 of the bending section of present embodiment by interconnecting piece 11, and between two interconnecting pieces 11
It is rotatably connected except through protrusion 13 with groove 12, is also rotatably connected by annular arm 15 with annular groove 16, so as to
Enhance the bonding strength of interconnecting piece 11.When the bending of bending section stress, the stress between two curved blocks 10 can pass through
Be dispersed between protrusion 13 and groove 12, between annular arm 15 and annular groove 16, stress avoided to concentrate, make two curved blocks 10 it
Between 11 stress deformation of interconnecting piece, and influence the normal use of bending section.
Annular arm 15 and annular groove 16 can be one or more.Annular groove 16 is symmetrically set in the two sides of groove 12.Annular
Arm 15 is symmetrically set in the two sides of protrusion 13.Therefore, the arc length of the annular groove 16 of the left and right sides and its corresponding central angle are equal, left
The arc length of the annular arm 15 of right two sides and its corresponding central angle are equal.
Also, the symmetry axis of annular groove 16 is parallel with the symmetry axis of multiple annular arms 15, so that annular groove 16 and annular
The orthogonal connection of arm 15.Therefore, the angle between two symmetry axis is the angle relatively rotated between two curved blocks 10.
In other embodiments, the symmetry axis of annular groove 16 intersects with the symmetry axis of multiple annular arms 15.Then annular groove
16 is non-orthogonal with annular arm 15.Equally, when two curved blocks 10 relatively rotate, annular arm 15 can also be in annular groove 16
Interior relative rotation.
Annular arm 15 is more than or equal to protrusion 13 opposite turn with groove 12 along the corresponding angle in 16 arc sliding track of annular groove
Dynamic maximum angle.When the bearing surface 14 positioned at the side of two curved blocks 10 mutually supports, then annular arm 15 is in annular
Sliding, also rotates to maximum angle in slot 16.Therefore, the maximum angle formed between the central axis of two curved blocks 10, annular groove
The maximum angle that will not influence between two curved blocks 10 of matching relationship between 16 and annular arm 15 guarantees that bending section can be suitable
Benefit reaches the requirement of bending angle, normal use.
Specifically in the present embodiment, annular arm 15 is equal to protrusion along the corresponding angle of 16 inner arc sliding trace of annular groove
13 maximum angles relatively rotated with groove 12.Then, the bearing surface 14 for the side for being located at two curved blocks 10 when two mutually supports
When, then annular arm 15 slides in annular groove 16, and the free end of annular arm 15 is also held with one end Xiang Ding of annular groove 16, ring
Shape arm 15 also rotates to the least significant end of arc sliding track in annular groove 16.Maximum angle is then between two curved blocks 10
When turned position limit, i.e., limit is mutually supported by two bearing surfaces 14, also by between annular arm 15 and annular groove 16
Mutually support and limited.
Specifically in the present embodiment, annular arm 15 is equal to 13 along the corresponding angle of 16 inner arc sliding trace of annular groove
Degree.The corresponding radian of each annular groove 16 is at least more than 13 degree.Then protrusion 13 and the maximum angle that groove 12 relatively rotates are 13
Degree.When the angle between the central axis A-A and central axis B-B of two curved blocks 10 is 13 degree, the freedom of annular arm 15
End is also also mutually supported with the end of annular groove 16 just.
Refer to Fig. 4, specifically in the present embodiment, annular arm 15 be it is multiple, annular groove 16 be it is multiple.Multiple annular arms
15 is identical as central angle corresponding to multiple annular grooves 16.Multiple annular arms 15 cooperate with multiple annular grooves 16 respectively, with
Increase the contact area between two curved blocks 10, can preferably disperse the active force between two curved blocks 10, guarantees two
It is stably connected between curved block 10.
Sub-arm 17 is formed between two adjacent annular grooves 16, forms auxiliary tank 18 between two adjacent annular arms 15.Sub-arm
17 are rotatably contained in auxiliary tank 18.It is spaced between multiple annular arms 15 and is formed with auxiliary tank 18, between multiple annular grooves 16
Interval is formed with sub-arm 17, therefore by the interaction between sub-arm 17 and auxiliary tank 18, to two curved blocks 10 it
Between connection further increase qualified relation.
The width of sub-arm 17 is equal to the width of annular arm 15, and the width of auxiliary tank 18 is equal to the width of annular groove 16.Cause
This, while two curved blocks 10 relatively rotate, the inner sidewall between the lateral wall and auxiliary tank 18 of sub-arm 17 is also mutual
Contact, mutually further increases the contact area between two curved blocks 10, effectively dispersion distortional stress.
The annular arm 15 of the side of protrusion 13 is even number, and the annular groove 16 of the side of groove 12 is even number.Specifically exist
In present embodiment, the two sides of protrusion 13 are respectively equipped with two annular arms 15, and the two sides of groove 12 are respectively equipped with two annular grooves
16.It then in two neighboring curved block 10, is opened up in one of curved block 10 there are two annular groove 16, in another curved block 10
Auxiliary tank 18 there are two opening up is corresponded to, therefore, the similar intensity of two curved blocks 10 itself seemingly, will not generate larger difference, from
And guarantee the even intensity of bending section entirety, guarantee uniform force.
In a wherein embodiment, position limiting structure includes the locking part set on groove two sides, raised two sides be equipped with
The sliding slot of locking part cooperation.The two sides of groove are equipped with locking part.Along the chute slidably, the open end of sliding slot is equipped with limit to locking part
Portion, locking part can mutually be engaged with limiting section, so that locking part is limited in sliding slot.
Referring to Fig. 5, the two sides of groove 12 are equipped with locking part 122.Specifically in the present embodiment, the outside of groove 12 is set
There are two annular arm 121, two annular arms 121 surround groove 12.Circular groove 12 is formed among two annular arms 121.Two rings
Shape arm 121 is extended out to the opening of groove 12 by the end face of curved block 10.Annular arm 121 is ring close to one end of opening
The free end of shape arm 121.Locking part 122 is set to the free end of annular arm 121.Two annular arms 121 are symmetrically distributed.
The two sides of protrusion 13 are equipped with the sliding slot 131 cooperated with locking part 122.Sliding slot 131 is symmetrically distributed in the two of protrusion 13
Side.Therefore annular arm 121 and locking part 122 are contained in sliding slot 131.Protrusion 13 is rotated relative to groove 12, then sliding slot 131
It is also arc-shaped corresponding to the shape of annular arm 121.
Along the chute 131 slidably, the open end of sliding slot 131 is equipped with limiting section 132 to locking part 122.Locking part 122 can be with
132 phase of limiting section locking, so that locking part 122 is limited in sliding slot 131.Specifically in the present embodiment, locking part 122 is convex
Wing 125.Then limiting section 132 is also the card wing of protrusion and sliding slot 131.When protrusion 13 is rotated relative to groove 12, then ring
Shape arm 121 also slides in sliding slot 131, when the locking part 122 of side mutually abuts clamping with limiting section 132, to make annular
Arm 121 stops at rotation in sliding slot 131.
The distal end faces 133 of limiting section 132 be concave surface, concave surface to cooperate annular arm 121 smoothly to slide in sliding slot 131,
The distal end faces 133 of limiting section 132 and the outer surface smooth contact of annular arm 121 are kept, smooth rotation is kept.
The locking part 122 of annular arm 121 and the limiting section 132 of sliding slot 131 be mutually clamped locking with retention bead 13 with it is recessed
12 relative rotation position of slot is when the over effect of drawing force in the longitudinal direction, locking part 122 and 132 phase card of limiting section
It only limits, avoids the problem that protrusion 13 falls off out of groove 12 to reach.
Fig. 5 is referred to, convex wing 125 is sector.The convex wing 125 of fan shape can increase locking part 122 and sliding slot 131
Contact area between inner sidewall, the contact approximation smooth contact between convex wing 125 and sliding slot 131 guarantee that convex wing 125 can be
Stable sliding in sliding slot 131.And.Fan-shaped convex wing 125 can be such that the length of the outside cambered surface of convex wing 125 increases, and avoid
Tip occurs between convex wing 125 and sliding slot 131 to contradict, guarantees that convex wing 125 being capable of smoothly 131 sliding along the chute.
In other embodiments, locking part 122 is not limited to the shape of convex wing 125, and convex wing 125 is also not necessarily limited to as fan
Shape shape.Locking part 122 can also be other distressed structures, for example, locking part 122 is back bending shape etc..Convex wing 125 can be with
For rectangular strip etc..
Protrusion 13 relatively rotates in groove 12 and arrives maximum angle, and the bearing surface 14 of adjacent two curved block 10 abuts against, makes
It is in maximum bend angle between two curved blocks 10 and enters lockup state.When two bearing surfaces 14 mutually support, protrusion 13 exists
When maximum angle is arrived in relative rotation in groove 12, two 10 working conditions of adjacent flex block are lockup state, are located at locking
Two curved blocks 10 of state cannot relatively rotate.Locking part 122 can not relatively rotate again with sliding slot 131.
Locking part 122 along the chute 131 the corresponding angle in arc sliding track to be more than or equal to protrusion 13 opposite with groove 12
The maximum angle of rotation.131 sliding along the chute of locking part 122, sliding slot 131 is arc, then locking part 122 is in sliding slot 131
Motion profile is arc.Locking part 122 along the chute 131 the corresponding angle in arc sliding track be less than sliding slot 131 radian pair
The angle answered.Also, locking part 122 along the chute 131 the corresponding angle in arc sliding track be more than or equal to protrusion 13 and groove
12 maximum angles relatively rotated.
The radian size of sliding slot 131 directly determines arc sliding track corresponding angle of the locking part 122 in sliding slot 131
Size.The corresponding angle of the radian of sliding slot 131 is greater than the maximum angle that protrusion 13 is relatively rotated with groove 12.Due to locking part
122 be convex wing 125, and convex wing 125 is sector, and convex wing 125 occupies the certain distance of sliding slot 131.Therefore locking part 122 is in sliding slot
Angle corresponding to arc sliding track in 131 is less than the overall radian size of sliding slot 131.Therefore, increased by design and slided
The length of slot 131 can make locking part 122 rotate angle corresponding to radian in sliding slot 131 more than or equal to two curved blocks 10
Between maximum bend angle.
It can then be limited to avoid the locking of locking part 122 and limiting section 132, not interfere with the center of two curved blocks 10
The design requirement of maximum angle between axial direction can make the maximum bend angle of curved block 10 meet the use need of endoscope
It asks.
Meanwhile when the bearing surface 14 of two curved blocks 10 abuts against, two curved blocks 10 enter lockup state, then locking
Portion 122 cannot slide again in sliding slot 131.122 inordinate rotation of locking part is avoided, to 132 excessive compression of limiting section, is abutted
Safeguard protection is played the role of in face 14, prevents from deforming between locking part 122 and limiting section 132 due to excessively reversing.?
In other embodiments, the shape of locking part 122 can also be thin-and-long strip, then the sliding slot 131 that locking part 122 occupies away from
From smaller.Locking part 122 along the chute 131 the corresponding angular dimension in arc sliding track angle corresponding with the radian of sliding slot 131
It is approximately equal to spend size.
Specifically in the present embodiment, locking part 122 along the chute 131 the corresponding angle in arc sliding track be equal to protrusion
13 maximum angles relatively rotated with groove 12.When protrusion 13 is relatively rotated with groove 12 to maximum angle, then locking
Portion 122 is also mutually supported with the limiting section of sliding slot 132.Therefore, two can be passed through for the turned position of two curved blocks 10
A bearing surface 14, which mutually supports, to be limited, and can also be limited by two locking parts 122 and the mutual cooperation of limiting section 132
Position.
Specifically in the present embodiment, locking part 122 along the chute 131 the corresponding angle in arc sliding track be equal to 13
Degree.The corresponding radian of each sliding slot 131 is greater than 13 degree.Then protrusion 13 and the maximum angle that groove 12 relatively rotates are 13 degree.When
When the angle of the central axis of two curved blocks 10 is 13 degree, locking part 122 is also also just mutual with the limiting section of sliding slot 132
It supports.
Fig. 6 and Fig. 7 is please referred to, curved block 10 is equipped with cutting line 19 close to endface.The end face of curved block 10 and cutting line
It is pressing part 191 between 19.Pressing part 191 is recessed towards the inside of curved block 10, forms the guide part for wearing draught line
192.Then draught line can pass through guide part 192, so that draught line is attached with bending section, and realize the bending to bending section
Carry out the effect of traction guidance.
When to 191 punching press of pressing part, due to the presence of cutting line 19, facilitate the formation of guide part 192.Stamping pressure
It is transmitted at cutting line 19, occluding pressure conduction avoids stamping pressure from having an impact the part other than pressing part 191, causes
Stress deformation.
The position that opens up of punch line 19 is specifically as follows, and protrusion 13 is set to one end of curved block 10, then punch line 19 is opposite
The other end of curved block 10 is set in protrusion 13.Intensity of the reduction for opening up position bottom line of punch line 19 to curved block 10
It influences, guarantees the intensity of curved block 10 itself.
Also, dashpot 193 is equipped between cutting line 19 and the other end face of curved block 10.The length of dashpot 193
Greater than the length of cutting line.Dashpot 193 is for further buffering stamping pressure.The dashpot 191 can effectively will be to bending
The punching press stress of block 10 it is evenly dispersed fall, to punching press effect be isolated, to reduce stamping procedure to shape caused by curved block 10
Become, prevents from threading off between the protrusion 13 of interconnecting piece 11 and groove 12.
Specifically in the present embodiment, cutting line 19 and the setting position of dashpot 193 are cutting line 19 and dashpot
193 are distributed about same axisymmetrical.The both ends of cutting line 19 and the both ends of dashpot 193 are symmetrically set.Work as pressing part
When 191 punching press, pressure conduction to cutting line 19.Cutting line 19 is transmitted to stamping pressure, once again passes to dashpot 193.
Dashpot 193 and cutting line 19 are just opposite, so that pressure be made to evenly spread on dashpot 193.
Also, the length of cutting line 191 is at least the 1/2 of the length of dashpot 193, then the length of dashpot 193 is to the greatest extent
May more than dispersion stamping pressure when, avoid influencing the integral strength of curved block 10 due to opening up dashpot 193.Specifically
Ground, the length of cutting line 191 are the 5/7 of the length of dashpot 193.Then dashpot 193 preferably can disperse to fall stamping pressure,
And guarantee the integral strength of curved block 10.
Dashpot 193 can be one or more, can dispersive stress as far as possible.The length of multiple dashpots 193 can not
Together, laid out in parallel.
Specifically in the present embodiment, curvature section of endoscope is made by laser cutting technique.Therefore, curved to guarantee
Slickness between the smoothness of rotation between knee-piece 10 and each contact component uses the butt welding of polishing mode after laser cutting
The removal of slag (slag) is without hindrance when moving between two bent-segment blocks 10 to guarantee.
Also, to guarantee that protrusion 13 is smoothly slided in groove 12 and annular arm 15 smoothly slides in annular groove 16, then
Making the contact surface shiny surface of protrusion 13 with groove 12, annular arm 15 is the face that smoothly transits in the contact surface of annular groove 16, so that
Contact surface occurs relative to smoothly rotating two-by-two.
The endoscope and curvature section of endoscope of present embodiment have at least the following advantages relative to traditional endoscope:
Firstly, curvature section of endoscope 11 is not provided with rivet, connected between two neighboring curved block 10 by interconnecting piece 11,
Manufacturing process is simple, easy to accomplish.
Also, interconnecting piece 11 is contained in 13 stabilization of protrusion in groove 12 by setting position limiting structure.Alternatively, interconnecting piece
By clamping mutual between locking part 122 and limiting section 132, so that locking part 122 is limited in sliding slot 132, protrusion 13 is avoided
It is detached from out of groove 12.Therefore, even if the connection between two curved blocks 10 is strong even if curvature section of endoscope does not use rivet
Degree also keeps relatively strong, will not influence the normal use of endoscope.
The effect that contacts with each other of annular arm 15 and annular groove 16 is avoided convex with the active force between two curved blocks 10 of dispersion
13 are played to be detached from out of groove 12.
Also, annular arm 15 is more than or equal to protrusion 13 and groove 12 along the corresponding angle of 16 inner arc sliding trace of annular groove
The maximum angle of relative rotation guarantees that two curved blocks 10 can be rotated according to design requirement.
Annular groove 16 is centrosymmetric distribution about the center of groove 12, and multi-stage annular arm 15 is in about the center of protrusion 13
Central symmetry distribution.Then there is the stress between protrusion 13 and groove 12 that can be centrosymmetric to be dispersed on annular arm 15, then should
The component that each annular arm 15 is subject to also is centrosymmetric distribution, is easy to cancel out each other, force balance reduces two curved blocks 10
Between stress, guarantee connection stability.
Although describing the present invention with reference to several exemplary embodiments, it is to be understood that, term used be explanation and
Term exemplary, and not restrictive.Due to the present invention can be embodied in a variety of forms without departing from invention spirit or
Essence, it should therefore be appreciated that above embodiment is not limited to any of the foregoing details, and should be defined by the appended claims
The whole change and modification widely explained, therefore fallen into claim or its equivalent scope in spirit and scope all should be with
Attached claim is covered.
Claims (10)
1. a kind of curvature section of endoscope, which is characterized in that including multiple head and the tail connection curved block, two neighboring curved block it
Between be rotatably connected by interconnecting piece, and the interconnecting piece includes groove and protrusion, and the protrusion is rotatably contained in described recessed
In slot, the end face of the curved block is respectively equipped with bearing surface, the raised phase in the groove in the two sides of the interconnecting piece
To maximum angle is turned to, the bearing surface of adjacent two curved block is abutted against, and the interconnecting piece is equipped with position limiting structure, the limit
Bit architecture is contained in the protrusion stabilization in the groove；
The curved block is equipped with cutting line close to endface, is pressing part between the end face of the curved block and the cutting line,
The pressing part is recessed towards the inside of the curved block, forms the guide part for wearing draught line, the cutting line and institute
It states and is equipped with dashpot between the other end face of curved block, the dashpot is for buffering stamping pressure.
2. curvature section of endoscope according to claim 1, which is characterized in that the position limiting structure includes set on described recessed
The locking part of slot two sides, the two sides of the protrusion are equipped with the sliding slot cooperated with the locking part, and the two sides of the groove are equipped with lock
Stop, slidably along the sliding slot, the open end of the sliding slot is equipped with limiting section to the locking part, and the locking part can be with institute
It states limiting section mutually to engage, so that the locking part is limited in the sliding slot.
3. curvature section of endoscope according to claim 2, which is characterized in that the locking part is convex wing, the convex wing
For sector.
4. curvature section of endoscope according to claim 1, which is characterized in that the position limiting structure includes set on described convex
The annular arm and annular groove set on the two sides of the groove for the two sides risen, the annular arm correspondence are contained in the annular groove
Interior, the annular arm is rotatably contained in the annular groove, and the annular arm is corresponding along annular groove arc sliding track
Angle be more than or equal to it is described protrusion with the groove relatively rotate maximum angle.
5. curvature section of endoscope according to claim 4, which is characterized in that the annular arm is multiple, the annular
Slot is multiple.
6. curvature section of endoscope according to claim 5, which is characterized in that multiple annular arms and multiple rings
Central angle corresponding to shape slot is identical.
7. curvature section of endoscope according to claim 1, which is characterized in that the length of the dashpot is greater than described cut
The length of secant.
8. curvature section of endoscope according to claim 1, which is characterized in that the cutting line and the dashpot about
Same axisymmetrical distribution.
9. a kind of endoscope, which is characterized in that including any bending section claim 1-8 and be set in the bending section
Draught line, the draught line is arranged in the guide part, and multiple curved blocks are connected in series in the draught line.
10. curvature section of endoscope according to claim 9, which is characterized in that the endoscope includes sebific duct, the glue
Pipe is directly sleeved on the outside of the bending section, and the bending section includes the curved block of multiple head and the tail connections, the bending section branch
The sebific duct is supportted, lateral wall of the lateral wall at the bending section both ends respectively with the sebific duct both ends is directly tightly connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811594822.1A CN109497915B (en) | 2018-12-25 | 2018-12-25 | Bending part of endoscope and endoscope |
| PCT/CN2019/127629 WO2020135362A1 (en) | 2018-12-25 | 2019-12-23 | Bending part of endoscope, and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811594822.1A CN109497915B (en) | 2018-12-25 | 2018-12-25 | Bending part of endoscope and endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109497915A true CN109497915A (en) | 2019-03-22 |
| CN109497915B CN109497915B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811594822.1A Active CN109497915B (en) | 2018-12-25 | 2018-12-25 | Bending part of endoscope and endoscope |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020135363A1 (en) * | 2018-12-25 | 2020-07-02 | 深圳市先赞科技有限公司 | Bending part of endoscope, and endoscope |
| WO2020135362A1 (en) * | 2018-12-25 | 2020-07-02 | 深圳市先赞科技有限公司 | Bending part of endoscope, and endoscope |
| WO2020135361A1 (en) * | 2018-12-25 | 2020-07-02 | 深圳市先赞科技有限公司 | Endoscope |
| CN112503070A (en) * | 2020-11-06 | 2021-03-16 | 广州市天鹰精密工具有限公司 | Processing method of elastic connecting piece |
| FR3128625A1 (en) * | 2021-11-03 | 2023-05-05 | Axess Vision Technology | Flexion structure for medical device, with reinforced support of the articulated vertebrae |
| WO2023185363A1 (en) * | 2022-03-30 | 2023-10-05 | Precision Robotics (Hong Kong) Limited | Bendable articulation and snake bone for surgical instruments |
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| WO2020135363A1 (en) * | 2018-12-25 | 2020-07-02 | 深圳市先赞科技有限公司 | Bending part of endoscope, and endoscope |
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