CN203524629U - Optical fiber maintaining device and endoscope system - Google Patents
Optical fiber maintaining device and endoscope system Download PDFInfo
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- CN203524629U CN203524629U CN201320620494.4U CN201320620494U CN203524629U CN 203524629 U CN203524629 U CN 203524629U CN 201320620494 U CN201320620494 U CN 201320620494U CN 203524629 U CN203524629 U CN 203524629U
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- optical fiber
- cylinder
- collimator
- fiber holder
- endoscope
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Images
Abstract
The utility model provides an optical fiber maintaining device and an endoscope system, wherein the optical fiber maintaining device can reduce transmission loss and prevent an insertion core arranged on an optical fiber and a refractive index gradual change collimator from being damaged, and the optical fiber maintaining device is utilized by the endoscope system. The optical fiber maintaining device (68) arranged in a light source device is provided with a first GI collimator (71), a first insertion core (72) fixedly connected with a first optical fiber (54), a maintaining tube (73), a thread component (74), a spiral spring (75) and a press component (76). The front end side of the maintaining tube (73) is fixed to the first GI collimator (71). The first insertion core (72) is contained at the back of the first GI collimator (71). The base end portion of the maintaining tube (73) is provided with the thread component (74) in a threaded mode. The spiral spring (75) and the press component (76) are contained in the thread component (74). The spiral spring (75) exerts force to enable the press component (76) to press the first insertion core (72) towards the first GI collimator (71), and the press component (76) is clamped and stopped by the maintaining tube (73) and is limited to rotate around a shaft.
Description
Technical field
This utility model relates to for to being built in the optical fiber holder that the optical fiber of endoscope and light supply apparatus keeps and the endoscopic system that has used this holding device.
Background technology
In medical field, utilize endoscope to diagnose.Endoscope has illuminating window at the front end of the insertion section of inserting in detection bodies, and the light supply apparatus connecting by light guide Cong Yu endoscope is to illuminating window guiding illumination light, thereby can be to detection bodies irradiating illumination light.As illuminating light guide, can use multifiber is tied up to the fibre bundle forming.Be respectively charged into light guide in endoscope and light supply apparatus when being located at the adapter of endoscope and the adapter of light supply apparatus and being connected, the end face of light guide connects airtight each other and connects optically.
Because mounting or dismounting frequency is high, the easy front end at optical fiber adheres to dirt etc. to the adapter of endoscope.Collision during in addition, sometimes also because of mounting or dismounting produces damage at the front end of optical fiber.If the front end at optical fiber adheres to dirt or produces damage, connect loss and can become large.In addition, in the situation that the optical power density of the front end of optical fiber is high, is attached with dirt or has produced the partial combustion of damage and cause the front end generation scaling loss of optical fiber or lock pin, or sometimes also because fiber core fusing phenomenon causes optical fiber to prolong burning.
In order to prevent the scaling loss of the optical fiber because causing adhering to of dirt etc., the optical fiber of optical power density that utility model has gone out to reduce the coupling part of optical fiber transmits road.For example, in the utility model of recording at patent documentation 1 and 2, in the front end welding of single-mode fiber, as collimating lens, bring into play the refraction index gradual change collimator of function, widen mode field diameter.
In recent years, laser illuminator system is used in research in illumination for endoscope.This laser illuminator system by light guide by the laser aiming of short wavelength and high output to fluorophor, by LASER Excited Fluorescence body, obtain illumination light.Light guide is not used fibre bundle, and uses a root multimode fiber for example with the above so large core diameters of 100 μ m.Therefore,, by applicable laser illuminator system in endoscope, can expect thus the thin footpath of insertion section.
In the endoscope apparatus of recording at patent documentation 3, possesses optical fiber that the laser for excited fluophor is guided syndeton each other.This endoscope apparatus is used multimode fibre as optical fiber, and the state with the end face of multimode fibre and the end face butt of refraction index gradual change collimator remains in sleeve pipe by the lock pin of the optical fiber of fixed light source and refraction index gradual change collimator.The optical fiber of endoscope's side is also kept by the structure with same, and when having connected the adapter of endoscope's side and the socket of light supply apparatus side, the sleeve pipe that refraction index gradual change collimator and lock pin are kept engages with each other.Thus, the refraction index gradual change collimator front end at optical fiber being connected each other optics connects.
2005-No. 077549 communique of [patent documentation 1] TOHKEMY
2002-No. 350666 communiques of [patent documentation 2] TOHKEMY
2011-No. 152371 communiques of [patent documentation 3] TOHKEMY
In the endoscope apparatus of recording at above-mentioned patent documentation 3, lock pin and refraction index gradual change collimator are retained as mounting or dismounting freely with respect to sleeve pipe, and the transmission loss producing between optical fiber and refraction index gradual change collimator is large.The researchs such as utility model people are also developed for reduce to transmit the optical fiber holder of loss between optical fiber and refraction index gradual change collimator.In such holding device, possess maintenance cylinder that the periphery of refraction index gradual change collimator is kept, with keep cylinder be rotated combination a rotation combination member, be provided in the inside of rotation combination member force application component, rotation combination member with keep cylinder be rotated in conjunction with time bear the application of force of force application component and pressing member that lock pin is pressed to refraction index gradual change collimator side.Thus, pressing member is pressed lock pin and lock pin and refraction index gradual change collimator are connected airtight to refraction index gradual change collimator side.
Yet, in above-mentioned holding device, by rotation combination member with keep cylinder be rotated in conjunction with time, the such situation of lock pin damage refraction index gradual change collimator that exists the rotation of rotation combination member to damage lock pin to pressing member transmission or rotate together with pressing member.
Utility model content
The purpose of this utility model is to provide a kind of and can reduces to transmit loss and prevent from being arranged on lock pin on optical fiber and refraction index gradual change collimator produces the optical fiber holder of damage and possesses the endoscopic system of this optical fiber holder.
The optical fiber holder that this utility model relates to is arranged at endoscopic system, this endoscopic system has endoscope and light supply apparatus, this endoscope has to inserting and be provided with the insertion section of the fluorophor that irradiating illumination light is used by laser excitation in detection bodies, this light supply apparatus has lasing light emitter, Qie Yu endoscope connects, described optical fiber holder is for keeping the optical fiber that the laser sending from light source is guided to fluorophor, it is characterized in that possessing: be provided in the refraction index gradual change collimator on the coupling part of endoscope and light supply apparatus; The maintenance cylinder keeping being positioned at the periphery of the refraction index gradual change collimator of front; Be arranged on the end of optical fiber, the front end of optical fiber is exposed from a side end face, and the lock pin from keeping the base end side of cylinder to insert; Be rotated combination with keeping cylinder, be fixed on the rotation combination member of the base end side that keeps cylinder; Be provided in the force application component of the inside of rotation combination member; Be provided in the inside that keeps cylinder and rotation combination member, rotation combination member with keep cylinder be rotated in conjunction with time bear the application of force of force application component and pressing member that lock pin is pressed to refraction index gradual change collimator side, described pressing member has and limits this pressing member with respect to a rotation limiting unit that keeps cylinder to pivot.
Preferably pressing member has the tabular flange part of the application of force of bearing force application component, keeps cylinder in inside, to have the incorporating section of taking in flange part, and rotation limiting unit is formed in flange part, by being limited to incorporating section, limits the engaged part pivoting.
Preferably a part for the inner peripheral surface of incorporating section has and forms plane locking surface, engaged part be in the outer shape of flange part form plane by locking surface.In addition, preferably incorporating section is formed with along the axially extended fastener as keyway or key projection, and engaged part is key projection or the keyway forming corresponding to fastener.Or preferably incorporating section forms polygonal cross sectional shape, engaged part is the outer peripheral face that forms the flange part of polygonal cross sectional shape corresponding to incorporating section.Preferably rotation combination member is and the screw member that keeps cylinder to screw togather.Preferably force application component is the spring member that member passes that is pressed.In addition, preferred fiber is multimode fibre.
Endoscopic system of the present utility model possesses: light supply apparatus, and it has lasing light emitter, the first optical fiber that the laser sending from lasing light emitter is guided, the first optical fiber is remained on to inner socket; Endoscope, it has to the insertion section of inserting in detection bodies, be arranged on the leading section of insertion section and irradiating illumination light is used by laser excitation fluorophor, by laser to the second optical fiber of fluorophor guiding, the adapter that the second optical fiber is remained on to inside and is connected freely with socket mounting or dismounting, described endoscopic system is used above-mentioned optical fiber holder, and possesses at least one party in the adapter that keeps the socket of the first optical fiber and keep the second optical fiber.
[utility model effect]
According to this utility model, the pressing member that bears the application of force of spring and lock pin is pressed to refraction index gradual change collimator side is with respect to keeping pivoting of cylinder to be restricted, therefore can reduce to transmit loss, and prevent that the lock pin and the refraction index gradual change collimator that are installed on optical fiber from sustaining damage.
Accompanying drawing explanation
Fig. 1 means the axonometric chart of the structure of endoscopic system of the present utility model.
Fig. 2 means the block diagram of summary of the electrical structure of endoscopic system.
Fig. 3 means the axonometric chart of structure of the adapter of endoscope.
Fig. 4 means the axonometric chart of structure of the socket of light supply apparatus.
Fig. 5 means the cutaway view of the structure of optical fiber holder of the present utility model.
Fig. 6 means the exploded perspective view of the structure of optical fiber holder of the present utility model.
Fig. 7 observes from base end side the axonometric chart that keeps cylinder, screw member, helical spring, pressing member.
Fig. 8 is the cutaway view along A-A line of Fig. 4.
Fig. 9 packs adapter after optical fiber holder and the major part cutaway view of socket into.
Figure 10 means the cutaway view of the first variation of the present utility model.
Figure 11 means the cutaway view of the second variation of the present utility model.
Figure 12 means the cutaway view of the 3rd variation of the present utility model.
[symbol description]
11 electronic endoscope systems
12 fujinon electronic video endoscopes
14 light supply apparatuses
15 insertion sections
18 adapters
21?CCD
35,36 second optical fiber
37,38 fluorophor
50 blue LD (lasing light emitter)
51 bluish violet LD (lasing light emitter)
54,55 first optical fiber
56 sockets
63,68 optical fiber holders
80 flange parts
94a, 94b, 98 are by locking surface (engaged part)
96 key projections (engaged part)
The specific embodiment
As shown in Figure 1, electronic endoscope system 11 possesses fujinon electronic video endoscope 12, processor device 13 and light supply apparatus 14.Fujinon electronic video endoscope 12 has to the flexible insertion section 15 of inserting in body cavity, the operating portion 16 being partly connected with the cardinal extremity of insertion section 15, the adapter 17,18 being connected with processor device 13 and light supply apparatus 14, by the general flexible cord 19 being connected between operating portion 16-adapter 18.Front end 15 (hereinafter referred to as leading section) 20 is provided with the CCD type imageing sensor of endoceliac bio-tissue (in detection bodies) photography use (with reference to Fig. 2.Hereinafter referred to as CCD) 21, for the light projector unit 22,23 (with reference to Fig. 2) to detection bodies internal radiation illumination light.
Light source is arranged on the front end of general flexible cord 19 with adapter 18, be connected freely with socket 56 (with reference to Fig. 4) mounting or dismounting of light supply apparatus 14.From light source, with adapter 18 branches, be provided with the adapter 17 for processor being connected with the socket (not shown) of processor device 13.
As shown in Figure 2, at leading section 20, be provided with image pickup optical system 31, CCD21, light projector unit 22,23 etc.In addition, timing sequencer (hereinafter referred to as TG) 32, analog signal processing circuit (hereinafter referred to as AFE) 33, CPU34 are arranged on operating portion 16 or adapter 18 etc.
Image pickup optical system 31 consists of battery of lens or prism etc., by via observation window 39 incidents from the photoimaging in detection bodies on CCD21.CCD21 carries out opto-electronic conversion by the picture being imaged in the detection bodies on shooting face by image pickup optical system 31 by each pixel, accumulates the signal charge corresponding with incident light quantity.CCD21 exports the signal charge of accumulating in each pixel as image pickup signal.
TG32 is to CCD21 input clock signal.The clock signal of CCD21 based on from TG32 input, the action of reading of accumulating action or read output signal electric charge of accumulating signal charge in the moment of regulation.From the clock signal of TG32 output, by CPU34, controlled.
AFE33 consists of correlated double sampling (CDS) circuit, automatic gain control (AGC) circuit, A/D change-over circuit, from CCD21, obtain the image pickup signal of simulation and noise is removed, and implementing to convert digital signal to after gain correcting process and to DSP42 input described later.CDS circuit is processed by correlated double sampling, and image pickup signal is removed and obtained to the noise that driven CCD 21 is produced.Agc circuit is to amplifying from the image pickup signal of CDS circuit input.A/D change-over circuit will be converted to the digital image pickup signal of regulation figure place and input to DSP42 from the image pickup signal of agc circuit input.The driving of AFE33 is controlled by CPU34.For example, the signal of the CPU40 input of CPU34 based on from blood processor 13, to the amplification of the image pickup signal being amplified by agc circuit, (gain) regulates.
In light projector unit 22,23, pass the front end of the second optical fiber 35,36 in insertion section 15, operating portion 16 and general flexible cord 19 in the interior connection of leading section 20.Light projector unit 22 penetrates normal optical as illumination light, light projector unit 23 penetrates special light as illumination light.
CPU40 is connected with each several part via not shown data/address bus, address bus, control line, and the integral body of blood processor 13 is unified to control.In ROM46, store the various data such as various programs (OS, application program etc.) for controlling the action of blood processor 13, graph data.CPU40 reads program or the data that need from ROM46, and launches in the RAM47 as job memory, and the program of reading is successively processed.In addition, CPU40 is from the information that the networks such as operating portion 45 or LAN are obtained check data, detection bodies or the people's that performs an operation the so each inspection of the Word messages such as information all changes, and is stored in RAM47.
DSP42, to implement the various signal processing such as color separation, color interpolation, gain correction, color balance adjustment, γ correction from the image pickup signal of CCD21 input via AFE33, carrys out image data generating.The view data being generated by DSP42 is inputted by the job memory to DIP43.In addition, DSP42 generates the needed ALC control data of automatic control (ALC control) of the illumination light quantities such as average brightness value, and to CPU40 input, wherein, this average brightness value is for example by averaging and obtain the brightness of each pixel of the view data generating.
DIP43 is that the view data to being generated by DSP42 is implemented the circuit that various images are processed, and the view data of being implemented after various images are processed by DIP43 is temporarily stored in VRAM48 as observing image, is inputted afterwards to display control circuit 44.
Operating portion 45 is the known input equipments such as guidance panel, mouse or keyboard that arrange in the framework of blood processor 13.CPU40 makes the each several part action of electronic endoscope system 11 according to the operation signal of operating portion 16 inputs from operating portion 45 or fujinon electronic video endoscope 12.
Blue LD50 sends the blue laser that centre wavelength is 445nm.The blue laser that blue LD50 sends by 22 guiding to light projector unit, and to fluorophor 37 incidents, becomes the white normal optical of simulation and to detection bodies internal radiation via combiner 52, branch coupler 53, the first optical fiber 54, the second optical fiber 35 etc. thus.
Bluish violet LD51 sends the bluish violet color laser that centre wavelength is 405nm.The bluish violet color laser that bluish violet LD51 sends via combiner 52, branch coupler 53, the first optical fiber 55, the second optical fiber 36 etc. by 23 guiding to light projector unit, and as special light and to detection bodies internal radiation.
The luminous moment or the luminous quantity of blue LD50 and bluish violet LD51 are controlled by CPU57.The ALC control data of the CPU40 input of CPU57 based on from blood processor 13, control the luminous quantity of blue LD50 and bluish violet LD51 in real time automatically to become the mode of the light quantity that is suitable for observation.
In addition, CPU57, carrying out when normal optical is observed that blue LD50 is lighted, only irradiates normal optical thus as illumination light, when carrying out special light observation, blue LD50 and bluish violet LD51 are lighted simultaneously, by normal optical and special light simultaneously to detection bodies internal radiation.The situation of observing with normal optical is compared, when special light is observed, and the observation image that the contrast that can shoot superficial blood vessel has improved.
In socket 56, maintain the first optical fiber 54,55.In adapter 18, maintain the second optical fiber 35,36.As described later, by adapter 18 is connected with socket 56, the first optical fiber 54,55 is connected with the second optical fiber 35,36.It is quartz multimode fibres processed more than 100 μ m that the first optical fiber 54,55 and the second optical fiber 35,36 are used for example core diameters.
As shown in Figure 3, adapter 18 has: the connector body 60 that keeps the second optical fiber 35,36; Be configured in peripheral part, the becket 61 rotating freely with respect to connector body 60; Be configured in the inner side of becket 61, and be fixed on the metal outer cylinder 62 of connector body 60.
On connector body 60, be provided with two optical fiber holders 63 that keep the second optical fiber 35,36.In addition, at becket 61, be formed with pair of cams groove 64 interior week.Expose from the end face of becket 61 one end of cam path 64.In the periphery of metal outer cylinder 62, in the side along adapter direction of insertion, project upwards and be provided with guide key 65.Guide key 65 enters to the keyway 70 in socket 56 side settings described later that becomes the connecting object of adapter 18.It should be noted that, the number of the optical fiber holder 63 arranging on connector body 60 is any, at this, as an example, the structure of two is shown.In addition, on connector body 60, be provided with to fujinon electronic video endoscope 12, supply gas-send not shown pipeline, position limitation pin of water etc.
As shown in Figure 4, socket 56 has: the metal shell 66 that possesses tapered portion 66a and the front end cylinder 66b of portion; The socket body 67 setting in the inside of metal shell 66.Metal shell 66 and socket body 67 are fixed on the framework of light supply apparatus 14.In socket body 67, in position corresponding to optical fiber holder 63 with adapter 18, be provided with two optical fiber holders 68 that keep the first optical fiber 54,55.
Periphery at the front end cylinder 66b of portion is provided with to the outstanding a pair of engagement pin 69 of diametric(al).Engagement pin 69 engages with the cam path 64 forming on becket 61 at adapter 18.In the interior week of the front end cylinder 66b of portion, and be formed with keyway 70 in the position of the dorsal part of engagement pin 69.This keyway 70 is received in the guide key 65 arranging on the metal outer cylinder 62 of adapter 18.Guide key 65 and keyway 70 arrange for the para-position of the optical fiber holder 63 of adapter 18 sides and the optical fiber holder 68 of socket 56 sides, by making the position of guide key 65 and the position of keyway 70 involutory and adapter 18 is entered along adapter direction of insertion to socket 56 side pressures, thus the second optical fiber 35,36 being kept by optical fiber holder 63,68 and the first optical fiber 54,55 are connected respectively optically.
When adapter 18 is connected with socket 56, first, makes the position of keyway and the position of guide key 65 involutory, and make the front end cylinder 66b of portion of socket 56 sides and 62 engagings of the metal outer cylinder of adapter 18 sides simultaneously.Then,, while becket 61 being carried out to rotating operation under the state of end face butt that makes engagement pin 69 and becket 61, from one end of cam path 64, receive engagement pin 69.Then, when becket 61 is carried out to rotating operation to arrow P direction in figure, along cam path 64, engagement pin 69 is drawn in and adapter 18 and socket 56 are engaged.
As shown in Fig. 5～Fig. 7, the first optical fiber 54 is packed into the socket 56 of light supply apparatus 14 by optical fiber holder 68 maintenances of the present utility model.It should be noted that, the first optical fiber 55 is kept by optical fiber holder 68 too and packs socket 56 into.This optical fiber holder 68 possesses: first fold optical index gradual change collimator (following, to be called GI collimator) 71; The first lock pin 72; Keep cylinder 73; Screw member 74 (rotation combination member); Helical spring 75 (force application component); Pressing member 76.
The first lock pin 72Cheng center is provided with along the drum of the optic fibre patchhole 72a of axial perforation.This first lock pin 72 forms the external diameter identical with a GI collimator 71.In optic fibre patchhole 72a, insert the first optical fiber 54 of the coating 54a that has peeled front end, and be fixed by bonding agent.The front end 72b of the first lock pin 72 is ground to protruding dome shape or plane with the front end that is inserted into the first optical fiber 54 in optic fibre patchhole 72a.
The one GI collimator 71 possesses refraction index graded index fiber 71a and by the lock pin 71b of the built-in drum of refraction index graded index fiber 71a.Lock pin 71b is used the lock pin of zirconia ceramics system etc.The incident end face 71c of the one GI collimator 71 and outgoing end face 71d are ground to respectively protruding dome shape and plane.The one GI collimator 71 is connected (following, to be called PC and to connect) by making incident end face 71c carry out physical contact with the front end 72b butt of the first lock pin 72 with the first optical fiber 54.It should be noted that, the shape of incident end face 71c and outgoing end face 71d can be also the arbitrary combination in protruding-protruding, flat-protruding, protruding-Ping, Ping-Ping.
Therefore the one GI collimator 71 has than the large core diameters of the first optical fiber 54, and the first optical fiber 54 can carry out PC with a GI collimator 71 and is connected in the situation that front end does not contact with extraneous gas.Thus, the front end at the first optical fiber 54 can not produce dust collecting effect.
In addition, a GI collimator 71 expands the beam diameter of the laser being sent by the first optical fiber 54 calibrate, and therefore the optical power density at the outgoing end face 71d place of a GI collimator 71 is lower than the front end of the first optical fiber 54.Thus, can significantly not reduce because the dust of outgoing end face 71d or damage etc. make to connect loss.And, can not produce the burning of prolonging of the scaling loss of the GI collimator 71 that the burnings such as dust of outgoing end face 71d cause, the first optical fiber 54 that fiber core fusing phenomenon causes yet.And because the reduction of optical power density also reduces laser and airborne organic photochemical reaction, so the generation of the dust collecting effect at outgoing end face 71d place also tails off.
Keeping cylinder 73 to have front keeps cylinder 73a and base end side to keep cylinder 73b.Front keeps a cylinder 73a to form drum, is embedded in the outer peripheral face of a GI collimator 71 outside near inner peripheral surface front end, and for example by bonding agent, is fixed on a GI collimator 71.Front keeps cylinder 73a to fix than the side-prominent ormal weight of outgoing end face 71d forward end as front end of a GI collimator 71.It should be noted that, below, by the front of maintenance cylinder 73 that is fixed on a GI collimator 71 referred to as front, and by the base end side with respect to a GI collimator 71 referred to as base end side.Base end side keeps cylinder 73b to form drum, from the front of inner circumferential surface, is formed with in turn lock pin incorporating section 77, flange incorporating section 78, female thread 79.The internal diameter of the leading section 77a of lock pin incorporating section 77 forms largerly, thereby the leading section 77a of lock pin incorporating section 77 is embedded in the base end part that front keeps cylinder 73b outward.By base end side being kept the leading section 77a of cylinder 73b be embedded in the base end part that front keeps cylinder 73b outward, front keeps cylinder 73a and base end side to keep cylinder 73b integrated thus.Keep cylinder 73 such as being the metal systems such as pyrite.
In keeping cylinder 73, in the behind of a GI collimator 71, take in the first lock pin 72, in the behind of the first lock pin 72, dispose pressing member 76.The first lock pin 72 is from keeping the base end side of cylinder 73 to insert, and front is accommodated in the inside that front keeps cylinder 73a, and base end side is accommodated in the lock pin incorporating section 77 that base end side keeps cylinder 73b.
Pressing member 76 forms the hollow form in turn from front end with flange part 80, cylindrical portion 81, such as being the metal systems such as SUS.Cylindrical portion 81 forms with the mode that the internal diameter of helical spring 75 mates with external diameter, thereby through helical spring 75.The external diameter of flange part 80 forms greatly than the external diameter of cylindrical portion 81, from helical spring 75, accepts the application of force.
As shown in Figure 8, keep the flange incorporating section 78 of cylinder 73 to be formed with by cross section circular-arc two side face 91a, 91b and by two plane locking surface 92a that are connected between this side face 91a, 91b, the inner peripheral surface that 92b forms.The flange part 80 that is accommodated in the pressing member 76 in this flange incorporating section 78 forms the outer shape of mating with flange incorporating section 78, form have cross section circular-arc two side face 93a, 93b and by two of being connected between this side face 93a, 93b plane by the outer shape of locking surface 94a, 94b.By locking surface 94a, 94b, as rotation limiting unit, brought into play function for two, when flange part 80 is accommodated in flange incorporating section 78, by locking surface 94a, 94b, by locking surface 92a, 92b, locked, therefore can limit pressing member 76 with respect to keeping pivoting of cylinder 73.
As shown in Fig. 9 (A), optical fiber holder 68 is loaded into the cradle portion 100 of socket 56.Support 100 possesses urceolus 101, inner core 102, stationary magazine creel 103 and helical spring 104.Urceolus 101 form there is the large-diameter portion 101a that engages with the cradle portion 110 of adapter 18 sides, and chimeric minor diameter part 101b, the stage portion 101c's between large-diameter portion 101a and minor diameter part 101b of inner core is roughly cylindric.
Chimeric and the inner peripheral surface of inner core 102 of the inner peripheral surface of the outer peripheral face of inner core 102 and urceolus 101 and the outer peripheral face of optical fiber holder 68 are chimeric.The front end of inner core 102 is than forward distolateral outstanding the setting of optical fiber holder 68, and when the cradle portion 110 of adapter 18 sides and the inner peripheral surface of urceolus 101 engage, the leading section that is encased in the optical fiber holder 63 of cradle portion 110 engages with the front end of inner core 102.It should be noted that, at the leading section of urceolus 101 and inner core 102, be formed with tapering 101d, the 102a that internal diameter diminishes to base end side gradually from front, so that adapter 18 and optical fiber holder 63 are guided to inner peripheral surface.
As mentioned above, optical fiber holder 68 is loaded into cradle portion 100.As shown in Fig. 9 (B), by being connected of adapter 18 and socket 56, when the cradle portion 110 of adapter 18 sides engages with cradle portion 100, the optical fiber holder 63 of adapter 18 sides is connected the first optical fiber 54,55 with inner core 102 engagings with the second optical fiber 35,36 thus.And now, helical spring 104 absorbs engaging or collision that inner core 102 causes with engaging of optical fiber holder 63 due to cradle portion 100 and cradle portion 110.In addition, as mentioned above, front keeps cylinder 73a to set than the side-prominent ormal weight of outgoing end face 71d forward end of a GI collimator 71, therefore when adapter 18 is connected with socket 56, between a GI collimator 71 of optical fiber holder 63 and the 2nd GI collimator 111 of optical fiber holder 68, leaves with front and keep the outstanding corresponding gap of amount of cylinder 73a.
When assembling optical fiber holder 68 of the present utility model, for example front is being kept cylinder 73a be fixed on after a GI collimator 71, keep cylinder 73a and base end side to keep cylinder 73b integrated front, from base end side, keep the base end side of cylinder 73b to insert the first lock pin 72 that is fixed with the first optical fiber 54.And, make the first optical fiber 54 through the inside of pressing member 76, the pressing member 76 that has passed helical spring 75 is inserted into the behind of the first lock pin 72 simultaneously.Now, the flange part 80 of pressing member 76 is accommodated in the flange incorporating section 78 that keeps cylinder 73.Then, make the first optical fiber 54, pressing member 76 and helical spring 75 through the inside of screw member 74, make the pin thread 85 of screw member 74 screw togather with keeping the female thread 79 of cylinder 73 simultaneously.Now, as mentioned above, by locking surface 94a, 94b, by locking surface 92a, 92b, locked, pressing member 76 is with respect to keeping pivoting of cylinder 73 to be restricted.Thus, the rotation that can prevent screw member 74 is transmitted and situation that the first lock pin 72 is sustained damage to pressing member 76, and, owing to can preventing the rotation of the first lock pin 72, therefore can prevent that the GI collimator 71 from sustaining damage.
When the pin thread 85 of screw member 74 screws togather with the female thread 79 that keeps cylinder 73, helical spring 75 is provided between the flange part 80 of pressing member 76 and the stage portion 86 of screw member 74 with compressed state.Thus, pressing member 76 bears the application of force of helical spring 75 and the first lock pin 72 is pressed to GI collimator 71 sides, therefore front end face and the stateful connection of a GI collimator 71 to connect airtight of the first optical fiber 54.Thus, can reduce the transmission loss of generation between the first lock pin 72 and a GI collimator 71.
In the above-described first embodiment, as the rotation limiting unit that is formed on flange part, have two of cutting that the part of outer peripheral face forms plane by locking surface 94a, 94b, but this utility model is not limited to this, as long as form the shape pivoting of restriction pressing member 76, variation that can be is as shown in figure 10 such, in incorporating section, 78 only form a fastener 92a, flange part 80 has lock with fastener 92a one by locking surface 94a, and the part except by locking surface 94a of flange part 80 forms the planar profile of circumference.
In addition, rotation limiting unit as being formed on flange part 80, is not limited to this, and variation that can be is as shown in figure 11 such, in incorporating section, 78 formation, along axially extended key projection 96 as fastener, form keyway 97 as engaged part corresponding to key projection 96 at flange part 80.It should be noted that, be not limited to this, also keyway can be formed on to incorporating section 78, and the key projection corresponding with this keyway is formed on to flange part 80.Or, can also be as shown in figure 12, incorporating section 78 is formed to polygon, tetragonal cross sectional shape for example, flange part 80 is formed to polygonal cross sectional shape corresponding to incorporating section 78.In this case, the outer peripheral face 98 of flange part 80 all becomes engaged part, and is limited to incorporating section 78.
In the above-described first embodiment, the optical fiber holder 68 being encased in the socket 56 of light supply apparatus 14 sides is illustrated, but this utility model is not limited to this, to the optical fiber holder 63 being encased in the adapter 18 of fujinon electronic video endoscope 12, also can be suitable for.In this case, as shown in Figure 9, optical fiber holder 63 possess there is the 2nd GI collimator 111 of the core diameters equating with a GI collimator 71 and fix the second optical fiber 35 and with the second lock pin 112 of the 2nd GI collimator 111 same outer diameter, the GI collimator 71 and the first lock pin 72 that replace above-mentioned the first embodiment, structure is in addition identical with optical fiber holder 68, and similarly assembled with optical fiber holder 68, under the state that the second lock pin 112 is pressed onto to the 2nd GI collimator 111, keep the second optical fiber 35.
In addition, in the above-described first embodiment, as the force application component being encased in holding device 63, used helical spring 75, but this utility model is not limited to this, so long as be accommodated in the inside of screw member 74 and be provided in the force application component between pressing member 76 and screw member 74 in compressed mode, such as being the elastic component that spring member beyond helical spring or rubber etc. consist of elastomeric material.
In the above-described first embodiment, the cradle portion 100,110 that is respectively equipped with each two optical fiber holders 63,68 and these optical fiber holders 63,68 are packed at adapter 18, socket 56, but their number can suitably change according to the light projector unit in forward end section of endoscope setting, the number that is built in the lasing light emitter in light supply apparatus.
Claims (9)
1. an optical fiber holder, it is arranged at endoscopic system, this endoscopic system has endoscope and light supply apparatus, this endoscope has insertion section, and this insertion section is to inserting in detection bodies and be provided with by laser excitation for the fluorophor of irradiating illumination light, and this light supply apparatus has lasing light emitter and is connected with described endoscope, described optical fiber holder is used for keeping optical fiber, this optical fiber guides the laser sending from described light source to described fluorophor, described optical fiber holder is characterised in that to possess:
Refraction index gradual change collimator, it is provided on the coupling part of described endoscope and described light supply apparatus;
Keep cylinder, it keeps being positioned at the periphery of the described refraction index gradual change collimator of front;
Lock pin, the end that it is arranged on described optical fiber, makes the front end of described optical fiber expose from a side end face, and this lock pin inserts from the described base end side of cylinder that keeps;
Rotation combination member, itself and described maintenance cylinder are rotated combination, and are fixed on the described base end side that keeps cylinder;
Force application component, it is provided in the inside of described rotation combination member;
Pressing member, it is provided in the described inside that keeps cylinder and described rotation combination member, described rotation combination member and described maintenance cylinder be rotated in conjunction with time bear the application of force of described force application component and described lock pin pressed to described refraction index gradual change collimator side, and have and limit this pressing member with respect to the described rotation limiting unit pivoting that keeps cylinder.
2. optical fiber holder according to claim 1, wherein,
Described pressing member has the tabular flange part of the application of force of bearing described force application component,
Described maintenance cylinder within it portion has the incorporating section of taking in described flange part,
Described rotation limiting unit is formed in described flange part and limits by being limited to described incorporating section the engaged part pivoting.
3. optical fiber holder according to claim 2, wherein,
A part for the inner peripheral surface of described incorporating section has and forms plane locking surface,
Described engaged part be in the outer shape of described flange part form plane by locking surface.
4. optical fiber holder according to claim 2, wherein,
Described incorporating section is formed with along the axially extended fastener as keyway or key projection,
Described engaged part is key projection or the keyway forming corresponding to described fastener.
5. optical fiber holder according to claim 2, wherein,
Described incorporating section forms polygonal cross sectional shape,
Described engaged part is corresponding to described incorporating section, to form the outer peripheral face of the described flange part of polygonal cross sectional shape.
6. optical fiber holder according to claim 1 and 2, wherein,
Described rotation combination member is and the described screw member that keeps cylinder to screw togather.
7. optical fiber holder according to claim 1 and 2, wherein,
The spring member that described force application component is passed by described pressing member.
8. optical fiber holder according to claim 1 and 2, wherein,
Described optical fiber is multimode fibre.
9. an endoscopic system, it possesses:
Light supply apparatus, it has lasing light emitter, the first optical fiber that the laser sending from described lasing light emitter is guided, described the first optical fiber is remained on to inner socket;
Endoscope, it has to the insertion section of inserting in detection bodies, be arranged on the leading section of described insertion section and by laser excitation for the fluorophor of irradiating illumination light, by laser to the second optical fiber of described fluorophor guiding, the adapter that described the second optical fiber is remained on to inside and is connected with described socket in mounting or dismounting mode freely
Described endoscopic system right to use requires the optical fiber holder described in 1 or 2, and possesses at least one party in the described adapter that keeps the described socket of described the first optical fiber and keep described the second optical fiber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012224187A JP5763035B2 (en) | 2012-10-09 | 2012-10-09 | Endoscope system |
| JP2012-224187 | 2012-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203524629U true CN203524629U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320620494.4U Expired - Lifetime CN203524629U (en) | 2012-10-09 | 2013-10-09 | Optical fiber maintaining device and endoscope system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5763035B2 (en) |
| CN (1) | CN203524629U (en) |
Cited By (6)
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| CN107518868A (en) * | 2017-07-17 | 2017-12-29 | 上海澳华光电内窥镜有限公司 | A kind of optical fiber autocollimation, endoscopic system and auto-collimation method |
| CN109688891A (en) * | 2016-09-14 | 2019-04-26 | 奥林巴斯株式会社 | Fibre optic scanner, lighting device and observation device |
| CN110996755A (en) * | 2017-08-17 | 2020-04-10 | 270外科有限公司 | Multi-machine-position medical operation lighting device with variable diameter |
| CN112584784A (en) * | 2018-11-22 | 2021-03-30 | 株式会社钟化 | Endoscope treatment instrument and working method thereof |
| CN112826423A (en) * | 2020-12-31 | 2021-05-25 | 西安申兆光电科技有限公司 | Aperture assembly |
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| JP6076554B2 (en) * | 2014-12-15 | 2017-02-08 | オリンパス株式会社 | A set of connectors, a flange, a method of manufacturing a set of connectors, and an endoscope |
| CN106725261A (en) * | 2017-01-13 | 2017-05-31 | 苏新军 | Treatment mirror is peeped in a kind of fixed optical fiber |
| US10709315B2 (en) * | 2017-04-28 | 2020-07-14 | Hoya Corporation | Apparatuses and methods for endoscopic connection |
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| JPH0693050B2 (en) * | 1988-03-16 | 1994-11-16 | 日本電信電話株式会社 | Optical connector |
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| JP2012143414A (en) * | 2011-01-12 | 2012-08-02 | Fujifilm Corp | Endoscope apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109688891A (en) * | 2016-09-14 | 2019-04-26 | 奥林巴斯株式会社 | Fibre optic scanner, lighting device and observation device |
| CN107518868A (en) * | 2017-07-17 | 2017-12-29 | 上海澳华光电内窥镜有限公司 | A kind of optical fiber autocollimation, endoscopic system and auto-collimation method |
| CN107518868B (en) * | 2017-07-17 | 2022-07-15 | 上海澳华内镜股份有限公司 | Optical fiber auto-collimation device, endoscope system and auto-collimation method |
| CN110996755A (en) * | 2017-08-17 | 2020-04-10 | 270外科有限公司 | Multi-machine-position medical operation lighting device with variable diameter |
| CN110996755B (en) * | 2017-08-17 | 2023-03-03 | 270外科有限公司 | Multi-position medical operation lighting device with variable diameter |
| CN112584784A (en) * | 2018-11-22 | 2021-03-30 | 株式会社钟化 | Endoscope treatment instrument and working method thereof |
| CN112826423A (en) * | 2020-12-31 | 2021-05-25 | 西安申兆光电科技有限公司 | Aperture assembly |
| CN112826423B (en) * | 2020-12-31 | 2024-04-23 | 上海澳华内镜股份有限公司 | Aperture component |
| CN112945438A (en) * | 2021-03-16 | 2021-06-11 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Optical fiber type soil pressure sensor |
| CN112945438B (en) * | 2021-03-16 | 2023-08-22 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Optical fiber type soil pressure sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5763035B2 (en) | 2015-08-12 |
| JP2014076096A (en) | 2014-05-01 |
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