CN109730693A - A kind of three visual field optical handheld of novel tubular structure probe - Google Patents
A kind of three visual field optical handheld of novel tubular structure probe Download PDFInfo
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- CN109730693A CN109730693A CN201811525488.4A CN201811525488A CN109730693A CN 109730693 A CN109730693 A CN 109730693A CN 201811525488 A CN201811525488 A CN 201811525488A CN 109730693 A CN109730693 A CN 109730693A
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Abstract
The invention discloses a kind of three visual field optical handheld of novel tubular structure probes, including hand hold transducer cylinder, stabilization card object hook tube head and optical process modules；The front end of hand hold transducer cylinder is arranged in stabilization card object hook tube head, and optical process modules are arranged in hand hold transducer cylinder and stabilization card object hook tube head；Optical process modules include MEMS galvanometer, prism wedge, objective lens, plano-concave lens, square hole lens and reflecting prism；In 45 ° of settings, MEMS galvanometer is used for incident beam continuous deflection within a preset range, and forms upper, middle and lower three beams scanning light beam for MEMS galvanometer and the incident beam of optical path；Prism wedge is parallel to upper, middle and lower three beams scanning light beam, and the optical path along interscan light beam is arranged；Successively side of the prism wedge far from MEMS galvanometer is arranged in along the transmission direction of upper, middle and lower three beams scanning light beam in objective lens, plano-concave lens, square hole lens and reflecting prism.Object scanning information is utilized from the scanning in three directions in the probe to greatest extent, greatly improves the clarity of imaging.
Description
Technical field
The present invention relates to medical imaging device technical field, in particular to a kind of three visual field optical handheld of novel tubular structure
Probe.
Background technique
Optical Coherence Tomography Imaging Technology (optical coherence tomography, OCT) is high as high-resolution
The imaging technique of speed, can provide the three-dimensional imaging that other imaging techniques are unable to reach for biological tissue.OCT technology is used for blood
Pipe imaging, plays increasingly obvious action to the diagnosing and treating of relevant vascular diseases.
Due to the progress of science and technology, the trend of relevant product development is diagnosed to human health now mainly towards miniature portable
Change development.Doctor is in the relevant disease of diagnosing and treating blood vessel, as vascular surgery is more and more finer, also gets over to doctor's medical skill
Come harsher, and the sample arm of traditional OCT technology imaging device, usually because its volume is big, unidirectional imaging depth is limited, past
It is very difficult in doctor's actual mechanical process toward causing.Miniaturization for optical element in OCT image system, can greatly enhance
The using flexible of system further promotes the convenience of operation under the premise of areas imaging is constant.
Furthermore endovascular blood to optical signal there is very strong scattering and absorbing phenomenon, cause unidirectional OCT at
The depth of picture often can not cover entire blood vessel.This problem becomes more prominent with becoming larger for blood vessel diameter.However it is right
The three-dimensional reconstruction of vascular wall is only the key point of surgical navigational and assessment.Therefore a kind of imaging mode is needed small-sized to be melted into
As optical element, and the influence that blood scattering can be got around and absorbed.
Summary of the invention
(1) technical problems to be solved
The present invention provides a kind of three visual field optical handheld of novel tubular structure probe, inherits traditional single direction scanning
Function outside, also overcome one direction scanning when imaging depth deficiency problem.Size reduction is to half inch in optical system
In the case where size, its areas imaging is not reduced.And there is stabilization function, the stability of imaging and clear is greatly improved
Degree.
(2) technical solution
To solve the above problems, the present invention provides a kind of three visual field optical handheld of novel tubular structure probe, comprising: hand-held
Probe barrel, stabilization card object hook tube head and optical process modules；The hand hold transducer cylinder is arranged in the stabilization card object hook tube head
Front end, the optical process modules are arranged in the hand hold transducer cylinder and the stabilization card object hook tube head；The optical treatment
Module includes: MEMS galvanometer, prism wedge, objective lens, plano-concave lens, square hole lens and reflecting prism；Wherein, the MEMS vibration
Mirror and the incident beam of the optical path are in 45 ° of settings, and the MEMS galvanometer for connecting the incident beam within a preset range
Continuous deflection, and form upper, middle and lower three beams scanning light beam；The prism wedge is parallel to scanning light beam described in upper, middle and lower three beams, in
Between the scanning light beam optical path setting；The objective lens, the plano-concave lens, the square hole lens and the reflecting prism according to
Side of the prism wedge far from the MEMS galvanometer is arranged in the secondary transmission direction along scanning light beam described in upper, middle and lower three beams.
Further, the rear end of the hand hold transducer cylinder is provided with end fixation kit, and the end fixation kit is separate
One end of the hand hold transducer cylinder is connected with fibre-optical fixator；The end fixation kit and the fibre-optical fixator are hollow out
Structure, the interior channel being equipped with for transmitting optical signalling.
Further, it is equipped with optical fiber collimator in the channel of the fibre-optical fixator, connects on the optical fiber collimator
It is connected to optical patchcord, the MEMS galvanometer is fixed on the end fixation kit, the MEMS galvanometer and the fiber optic collimator
Device is in 45 ° of settings, and the MEMS galvanometer is electrically connected with switching cable.
Further, the hand hold transducer cylinder is equipped with radial groove, the stabilization card object hook pipe by the outer wall of front end
Head is movably arranged on the front end of the hand hold transducer cylinder by the radial groove.
Further, the stabilization card object hook tube head is engraved structure, and the front end of the stabilization card object hook tube head is rotary table
Body, the rear end inner wall of the stabilization card object hook tube head are equipped with screw thread, and the stabilization card object hook tube head passes through the screw thread and institute
State the front end that radial groove is movably arranged on the hand hold transducer cylinder.
Further, limit pressing ring, card object hook, holding clamp and reflection rib are equipped in the stabilization card object hook tube head
Mirror；The front end of the hand hold transducer cylinder, the stabilization card object hook tube head are arranged in by the limit pressing ring for the holding clamp
Front end be equipped with first through hole, the reflecting prism is fixed in the first through hole by the holding clamp, the card object
Hook passes through the axial activity of the holding clamp, the limit pressing ring and the first through hole along the stabilization card object hook tube head
Setting.
Further, the side plate of the stabilization card object hook tube head is equipped with the second through-hole, and second through-hole is equipped with tooth
Wheel, the gear are fixed in second through-hole by fixing axle, and the card object hook is equipped with the tooth of the corresponding gear
Slot.
Further, the card object hook is equipped with grab far from one end of the stabilization card object hook tube head.
Further, the reflecting prism is equipped with groove far from the side of the square hole lens, and the two sides of the groove are set
There is the inclined-plane with the scanning light beam in 45 ° of angles.
Further, the diameter of the MEMS galvanometer is 2~3mm, and the diameter of the objective lens is 12~13mm, and focal length is
75~76mm, pupil diameter are 11~12mm, and F-number is 6~7；The upper and lower surfaces of the prism wedge are rectangle,
The height of the prism wedge is 11~13mm, and the upper surface of the prism wedge is having a size of 8mm × 2mm, the prism wedge
Lower surface be having a size of 9mm × 3mm；The diameter of the plano-concave lens be 12~13mm, concave be 100~
110mm；The front surface and rear surface of the square hole lens are plane, and center square hole is equipped at its axis, and the square hole is saturating
The diameter of mirror is 12~13mm, and with a thickness of 4~7mm, the aperture of the center square hole is 4mm × 4mm.
(3) beneficial effect
The present invention provides a kind of three visual field optical handheld of novel tubular structure probe, will be to be measured by stabilization card object hook tube head
Object blocks, by MEMS galvanometer and the incident beam of optical path in 45 ° of settings, make MEMS galvanometer by incident beam within a preset range into
Row continuous deflection forms upper, middle and lower three beams scanning light beam.Prism wedge is parallel to upper, middle and lower three beams scanning light beam simultaneously, in
Between scanning light beam optical path setting, to generate optical path difference.And successively by objective lens, plano-concave lens, square hole lens and reflecting prism
Side of the prism wedge far from MEMS galvanometer is set along the transmission direction of upper, middle and lower three beams scanning light beam, so that three beam scanning light
Shu Yici is incident on objective lens, plano-concave lens and square hole lens, carries out focal plane to upper and lower two beam scannings light beam and moves back, two sides
Scanning light beam pass through reflecting prism, by after the reflection of reflecting surface to 90 ° of central axis direction deviation, thus to three of determinand
Direction is scanned.The present invention can carry out three direction scanning imageries to imaging object, relative to traditional optical coherence tomography
For the scanning of single direction, it is insufficient that the three visual field optical handheld of novel tubular structure probe overcomes simple scanning imaging depth
The problem of, object scanning information is utilized in the scanning in three directions to greatest extent, greatly improves the clarity of imaging.
In addition, so that parallel rays is deflected, areas imaging is expanded invention introduces plano-concave lens, even if
Change three visual field optical handheld probe size of novel tubular structure and reduce half, the extension of light beam can be also carried out by plano-concave lens,
Expand areas imaging.Reflecting prism is also introduced simultaneously, compared to plane mirror, there is better installation, overcome due to small-sized
Plane mirror is unfavorable for the characteristic of adjustment and is difficult to reach the difficulty of installation accuracy requirement, provides the reflection effect of more accurate fixed angle
Fruit reduces the error introduced due to adjustment, has castering action to imaging definition.
Detailed description of the invention
Fig. 1 is the structural representation of three visual field optical handheld of the novel tubular structure probe provided in the preferred embodiment of the present invention
Figure；
Fig. 2 is the cross-sectional view of three visual field optical handheld of the novel tubular structure probe in Fig. 1；
Fig. 3 is the structural schematic diagram of the optical process modules provided in the preferred embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the end fixation kit provided in the preferred embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the stabilization card object hook tube head provided in the preferred embodiment of the present invention；
Fig. 6 is the cross-sectional view of the structure of the stabilization card object hook tube head in Fig. 5；
Wherein, 1: hand hold transducer cylinder；2: stabilization card object hook tube head；3: optical process modules；4: end fixation kit；5: light
Fine fixator；6: optical patchcord: 7: switching cable；9: determinand；10: spacing collar；11: prism wedge fixture；21: limit pressure
Circle；22: card object hook；23: holding clamp；24: gear；25: fixing axle；31:MEMS galvanometer；32: prism wedge；33: object lens
Group；34: plano-concave lens；35: square hole lens；36: reflecting prism；51: optical fiber collimator.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of three visual field optical handheld of novel tubular structure probe, is based on micro electro mechanical system (MEMS) technology
(Micro-Electro-Mechanical System, abbreviation MEMS) design, as depicted in figs. 1 and 2, the novel tubular structure
Three visual field optical handhelds probe includes: hand hold transducer cylinder 1, stabilization card object hook tube head 2 and optical process modules 3.Hand hold transducer cylinder 1
Downward one end is front end, and upward one end is rear end.The front end of hand hold transducer cylinder 1, optics is arranged in stabilization card object hook tube head 2
Processing module 3 is arranged in hand hold transducer cylinder 1 and stabilization card object hook tube head 2.
As shown in Figures 2 and 3, which includes: MEMS galvanometer 31, prism wedge 32, objective lens 33, puts down
Concavees lens 34, square hole lens 35 and reflecting prism 36.
In 45 ° of settings, MEMS galvanometer 31 is used for incident beam in default model for MEMS galvanometer 31 and the incident beam of optical path
It encloses within the scope of interior continuous deflection, such as 90 ± 6.8 °, while incident light is formed upper, middle and lower three beams scanning light beam by MEMS galvanometer 31.
Prism wedge 32 is parallel to upper, middle and lower three beams scanning light beam, and the optical path along interscan light beam is arranged.Objective lens 33, plano-concave lens
34, square hole lens 35 and reflecting prism 36 are successively remote in prism wedge 32 along the transmission direction setting of upper, middle and lower three beams scanning light beam
Side from MEMS galvanometer 31, so that three beams scanning light beam is successively incident on objective lens 33, plano-concave lens 34 and square hole lens 35,
Focal plane is carried out to upper and lower two beam scannings light beam to move back, and is formed a phase step type with Road scanning light beam focal plane and is misplaced, two sides
Surface sweeping scanning light beam passes through after the reflection of the two sides reflecting surface of reflecting prism 36 respectively to 90 ° of central axis direction deviation, thus right
Three directions of determinand 9 are scanned.
In use process, operator holds hand hold transducer cylinder 1, after adjusting sonde configuration, by its front end and stabilization card
The fitting incision of 2 side wall of object hook tube head, when hand hold transducer cylinder 1 and stabilization card object hook tube head 2 mutually resist, determinand 9 is at blood vessel
In in the effective coverage of scanning, real-time monitoring is at this moment carried out by the scanning direction to MEMS galvanometer 31, it is right in art to can be realized
The 3-D scanning of 9 internal structure of determinand and the real-time measurement of flow velocity.This three-dimensional collaboration scanning novel tubular structure three regards
Field optics hand hold transducer not only inherits the function of conventional hand probe single direction scanning, while when also overcoming simple scanning
Due to the problem that the intrinsic scattering of internal blood vessel tissue and absorption characteristic cause imaging depth inadequate, the scanning in three visual field directions
The shortcomings that compensating for simple scanning Limited information, so that healthcare provider obtains patient vessel's organizational information and more has conviction power,
And the mutual cooperation with stabilization card object hook tube head 2, it is therefore, this that there is nothing the problem of shake when overcoming medical worker's operation
Invasive, real-time, scanning accuracy are high, scanning speed is fast, it is compact-sized, be applicable in the numerous three-dimensional collaboration scanning of vascular group and hold
The research and development of probe have objectively value.
Wherein, due to introducing plano-concave lens 34, so that parallel rays is deflected, areas imaging is expanded, even if
Change three visual field optical handheld probe size of novel tubular structure and reduce half, the expansion of light beam can be also carried out by plano-concave lens 34
Exhibition expands areas imaging.Also introduce reflecting prism 36 simultaneously, compared to plane mirror, there is better installation, overcome due to
Small-sized plane mirror is unfavorable for the characteristic of adjustment and is difficult to reach the difficulty of installation accuracy requirement, provides the anti-of more accurate fixed angle
Effect is penetrated, the error introduced due to adjustment is reduced, there is castering action to imaging definition.
Wherein, as shown in Fig. 2, being equipped with prism wedge fixture 11 in hand hold transducer cylinder 1, which is in ring
Shape, the outer surface of prism wedge fixture 11 have screw thread, and internal fixing structure is prism wedge 32.Prism wedge fixture 11 passes through
Outer surface thread is mounted in hand hold transducer cylinder 1, and prism wedge 32 is fixed in prism wedge fixture 11, and prism wedge 32 passes through
A pair of of objective lens 33 cooperate with plano-concave lens 34 and square hole lens 35.Objective lens 33, plano-concave lens 34 and square hole lens 35 are same
Axis setting, spacing collar 10 are fixed in hand hold transducer cylinder 1, and spacing collar 10 is to prism wedge 32, objective lens 33,34 and of plano-concave lens
Square hole lens 35 carry out axial limiting.
In the present embodiment, 1 full-size diameter of hand hold transducer cylinder be 15.3mm, length 98mm, scanning range be 4mm ×
In 4mm, exactly because the progress laterally scanned so that we not only can from traditional axial angle blood vessel section knot
Structure, at the same can also from both sides perpendicular to the section structure of side blood vessel from of optical axis, both compensated for traditional scanning mode because
Scan depths not enough lead to the defect that the imaging is not clear, while the real time scan in three directions greatly improves and breaks to blood vessel
Efficiency when face structure and blood flowing water detect.
In the present embodiment, prism wedge 32 is contacted with the fitting of 33 surface of objective lens, and plano-concave lens 34 is another with objective lens 33
One end fitting, plano-concave lens 34 are bonded with 35 surface of square hole lens.
In the present embodiment, 31 diameter of MEMS galvanometer is 2~3mm, preferably 2.4mm.
In the present embodiment, the upper and lower surfaces of prism wedge 32 are rectangle, and the height of prism wedge 32 is 11~
13mm, preferably 12.3mm.The size of 32 upper surface of prism wedge is 8mm × 2mm, and the size that 32 lower surface of prism wedge is is
9mm × 3mm, dielectric material H-ZF7LAGT.
In the present embodiment, objective lens 33 can be selected apochromatism double agglutination lens group, and the diameter of objective lens 33 is 12~
13mm, preferably 12.7mm.Focal length is 75~76mm, preferably 75.14mm.Pupil diameter is 11~12mm, preferably
11.43mm.F-number is 6~7, preferably 6.5, the use of wave band is 1260~1360nm, and dielectric material is N-BAF10 or N-
SF6HT。
In the present embodiment, the diameter of plano-concave lens 34 is 12~13mm, preferably 12.7mm.Concave is 100
~110mm, preferably 107.24mm.
In the present embodiment, round square hole lens are can be selected in square hole lens 35, and front surface and rear surface are plane, and its axis
Be equipped with center square hole at line, the diameters of square hole lens 35 is 12~13mm, preferably 12.7mm, with a thickness of 4~7mm can
The external member of selection, center square hole aperture are 4mm × 4mm.
In the present embodiment, reflecting prism 36 is side of the concave reflecting prism far from square hole lens 35 equipped with groove, groove
Two sides be equipped with scanning light beam be in 45 ° of angles inclined-plane.Particularly, groove size is 4mm × 4mm, length 5mm, recessed
It is the inclined-plane of 5mm that, which there are 2 45 ° of length in slot two sides,.
The embodiment of the present invention provides a kind of three visual field optical handheld of novel tubular structure probe, passes through stabilization card object hook tube head
2 block determinand 9, by MEMS galvanometer 31 and the incident beam of optical path in 45 ° of settings, make MEMS galvanometer 31 that incident beam to exist
Continuous deflection is carried out in preset range, forms upper, middle and lower three beams scanning light beam.Prism wedge 32 is parallel to upper, middle and lower three simultaneously
Beam scanning light beam, the optical path along interscan light beam is arranged, to generate optical path difference.And by objective lens 33, plano-concave lens 34, square hole
Lens 35 and reflecting prism 36 are successively arranged in prism wedge 32 along the transmission direction of upper, middle and lower three beams scanning light beam far from MEMS
The side of galvanometer 31, so that three beams scanning light beam is successively incident on objective lens 33, plano-concave lens 34 and square hole lens 35, to upper and lower
Two beam scanning light beams carry out moving back for focal plane, and two sides scanning light beam passes through reflecting prism 36, backward by the reflection of reflecting surface
90 ° of central axis direction deviation, so that three directions to determinand 9 are scanned.The present invention can carry out three to imaging object
Direction scanning imagery, for the scanning of traditional optical coherence tomography single direction, three visual field of novel tubular structure
Optical handheld, which is popped one's head in, overcomes the problem of simple scanning imaging depth deficiency, and object is utilized in the scanning in three directions to greatest extent
Swept-volume information greatly improves the clarity of imaging.
Based on the above embodiment, in a preferred embodiment, as shown in Figure 1, Figure 2 and Figure 4, hand hold transducer cylinder 1
Rear end is provided with end fixation kit 4, and end fixation kit 4 is connected with fibre-optical fixator 5 far from one end of hand hold transducer cylinder 1.
End fixation kit 4 and fibre-optical fixator 5 are engraved structure, the interior channel being equipped with for transmitting optical signalling.Light is successively
It just can enter in hand hold transducer cylinder 1 by fibre-optical fixator 5 and end fixation kit 4.
Wherein, optical fiber collimator 51 is equipped in the channel of fibre-optical fixator 5, optical fiber collimator 51 is accurate with lens by tail optical fiber
It positions, the transmission light in optical fiber can be transformed into collimated light by it, or the external world is optically coupled in single mode optical fiber in parallel.Light
Optical patchcord 6, such as FC/APC single-mode fiber jumper are connected in fine collimator 51.
MEMS galvanometer 31 can be fixed on end fixation kit 4, such as MEMS galvanometer 31 is installed by threaded hole and screw
It is fixed on end fixation kit 4, MEMS galvanometer 31 and optical fiber collimator 51 are arranged in 45 °, and MEMS galvanometer 31 and patchcord
Cable 7 is electrically connected.End fixation kit 4 passes through the optical signalling that optical patchcord 6 transmits, the automatically controlled letter transmitted by switching cable 7
Number control MEMS galvanometer 31 deflection, generate continuously linear upper, middle and lower three beams described in scanning light beam enter in hand hold transducer cylinder 1.
Particularly, MEMS galvanometer 31 is packaged on the minitype circuit board of 11.4mm × 11.4mm, and 10pin switching cable 7 is logical
It crosses switching cable interface to connect with the signal driving plate of outside BDQ-PicoAmp, passes through the biased electrical of input sinusoidal cycles control
Signal is pressed, MEMS galvanometer 31 is enable linearly to deflect in the range of ± 3.5 °, realizes MEMS galvanometer 31 to light beam scanning track
Real-time control generates Continuous Linear scanning light beam and enters in hand hold transducer cylinder 1.End fixation kit 4 and hand hold transducer cylinder 1 are logical
It crosses threaded hole and screw is realized and fixed.
Based on the above embodiment, in a preferred embodiment, shown in as shown in Figure 1, Figure 2, Fig. 5 and Fig. 6, hand hold transducer cylinder
1 leans on the outer wall of front end to be equipped with radial groove, and stabilization card object hook tube head 2 is movably arranged on hand hold transducer cylinder by radial groove
It is adjusted so that stabilization card object hook tube head 2 is rotatably arranged on hand hold transducer cylinder 1 by rotation stabilization card object hook tube head 21 front end
Save the length of its stretching.
Wherein, stabilization card object hook tube head 2 is engraved structure, diameter 18mm.The front end of stabilization card object hook tube head 2 is rotary table
Body, the rear end inner wall of stabilization card object hook tube head 2 are equipped with screw thread, and stabilization card object hook tube head 2 passes through screw thread and radial groove activity
The front end of hand hold transducer cylinder 1 is set.
In the present embodiment, be equipped with as shown in Figure 5 and Figure 6, in stabilization card object hook tube head 2 limit pressing ring 21, card object hook 22,
Holding clamp 23 and reflecting prism 36.The front end that hand hold transducer cylinder 1 is arranged in by limiting pressing ring 21 in holding clamp 23, stabilization card
The front end of object hook tube head 2 is equipped with first through hole, and reflecting prism 36 is fixed in first through hole by holding clamp 23, card object hook
22 pass through the axial activity setting of holding clamp 23, limit pressing ring 21 and first through hole along stabilization card object hook tube head 2.Card object hook
22 one end far from stabilization card object hook tube head 2 are equipped with grab, are clamped determinand 9 by grab.
For the position convenient for adjusting the card object hook 22, the side plate of stabilization card object hook tube head 2 is equipped with the second through-hole, and second
Through-hole is the rectangular opening that length is 3 × 6mm, and the second through-hole is equipped with gear 24, and operative gear 24 is exposed outside.In rectangular opening
Two sides are provided with the circular hole of diameter 2.5mm, and fixing axle 25 is equipped in circular hole, and gear 24 is fixed on the second through-hole by fixing axle 25
Interior, card object hook 22 is equipped with the tooth socket of corresponding gear, to drive card object hook 22 along stabilization card object hook by rotate gear 24
The axial movement of tube head 2.
Meanwhile being greater than the tooth pitch of gear 24 in a tooth of 22 top of card object hook, it is capable of the movement of limiting gear 24,
Gear 24 during rotate gear 24 is prevented to be detached from card object hook 22.Certain side of fixing axle 25 is nut, in order to gear
24 disassembly.
Determinand 9 can be hooked in the bottom end of card object hook 22, determinand 9 can be made at image position by the rotation of gear 11
It sets static relative to stabilization card object hook tube head 2, it is only necessary to drive card object hook 22 to adjust by gear 24, effectively improve anti-
The effect of trembling, at the same overcome installation three visual field optical handheld of novel tubular structure probe difficulty, avoid in installation process to
Survey the easily-deformable problem of object 9.
In use process, operator holds hand hold transducer cylinder 1, after adjusting sonde configuration, by its front end and stabilization card
The fitting incision of 2 side wall of object hook tube head, hand hold transducer cylinder 1 and stabilization card object hook tube head 2 are mutually resisted, made by adjusting gear 24
9 imaging position of determinand is static relative to stabilization card object hook tube head 2, and determinand 9 is that blood vessel is in the effective coverage of scanning, this
When real-time monitoring carried out by scanning direction to MEMS galvanometer 31, can be realized in art to the three-dimensional of 9 internal structure of determinand
The real-time measurement of scanning and flow velocity.This three-dimensional collaboration scanning three visual field optical handheld of novel tubular structure probe is not only inherited
The function of conventional hand probe single direction scanning, while since internal blood vessel tissue is intrinsic when also overcoming simple scanning
The problem that scattering and absorption characteristic cause imaging depth inadequate, the scanning in three visual field directions compensate for simple scanning Limited information
The shortcomings that, so that healthcare provider obtains patient vessel's organizational information and more has conviction power, and the phase with stabilization card object hook tube head 2
Mutually cooperation, the problem of shaking when overcoming medical worker's operation, therefore, it is this have non-invasive, real-time, scanning accuracy it is high,
Scanning speed research and development that are fast, compact-sized, being applicable in the numerous three-dimensional collaboration scanning hand hold transducer of vascular group have objective valence
Value.
In conclusion the embodiment of the present invention provides a kind of three visual field optical handheld of novel tubular structure probe, pass through stabilization
Card object hook tube head 2 blocks determinand 9, by MEMS galvanometer 31 and the incident beam of optical path in 45 ° of settings, makes MEMS galvanometer 31 will
Incident beam carries out continuous deflection within a preset range, forms upper, middle and lower three beams scanning light beam.It is simultaneously that prism wedge 32 is parallel
In upper, middle and lower three beams scanning light beam, the optical path along interscan light beam is arranged, to generate optical path difference.And by objective lens 33, plano-concave
Lens 34, square hole lens 35 and reflecting prism 36 are successively arranged along the transmission direction of upper, middle and lower three beams scanning light beam in prism wedge
32 sides far from MEMS galvanometer 31, so as to be successively incident on objective lens 33, plano-concave lens 34 and square hole saturating for three beams scanning light beam
Mirror 35 carries out focal plane to upper and lower two beam scannings light beam and moves back, and two sides scanning light beam passes through reflecting prism 36, passes through reflecting surface
Reflection after to 90 ° of central axis direction deviation, so that three directions to determinand 9 are scanned.The present invention can be to imaging object
Body carries out three direction scanning imageries, for the scanning of traditional optical coherence tomography single direction, the novel tubular
Three visual field optical handheld of structure, which is popped one's head in, overcomes the problem of simple scanning imaging depth deficiency, and the scanning in three directions is to greatest extent
Object scanning information is utilized, greatly improve the clarity of imaging.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of three visual field optical handheld of novel tubular structure probe characterized by comprising
Hand hold transducer cylinder, stabilization card object hook tube head and optical process modules；The stabilization card object hook tube head setting is described hand-held
The front end of probe barrel, the optical process modules are arranged in the hand hold transducer cylinder and the stabilization card object hook tube head；
The optical process modules include: MEMS galvanometer, prism wedge, objective lens, plano-concave lens, square hole lens and reflection rib
Mirror；
Wherein, in 45 ° of settings, the MEMS galvanometer is used for the incident beam for the MEMS galvanometer and the incident beam of optical path
Continuous deflection within a preset range, and form upper, middle and lower three beams scanning light beam；The prism wedge is parallel to upper, middle and lower three beams institute
Scanning light beam is stated, along the optical path setting of the intermediate scanning light beam；The objective lens, the plano-concave lens, the square hole lens
Successively it is arranged in the prism wedge along the transmission direction of scanning light beam described in upper, middle and lower three beams far from institute with the reflecting prism
State the side of MEMS galvanometer.
2. three visual field optical handheld of novel tubular structure probe according to claim 1, which is characterized in that the hand-held spy
The rear end of head cylinder is provided with end fixation kit, and the end fixation kit is connected with light far from one end of the hand hold transducer cylinder
Fine fixator；The end fixation kit and the fibre-optical fixator are engraved structure, interior to be equipped with for transmitting optical signalling
Channel.
3. three visual field optical handheld of novel tubular structure probe according to claim 2, which is characterized in that the optical fiber is solid
Determine to be equipped with optical fiber collimator in the channel of device, optical patchcord is connected on the optical fiber collimator, the MEMS galvanometer is solid
Be scheduled on the end fixation kit, the MEMS galvanometer and the optical fiber collimator in 45 ° of settings, and the MEMS galvanometer with
Cable of transferring is electrically connected.
4. three visual field optical handheld of novel tubular structure probe according to claim 1, which is characterized in that the hand-held spy
Head cylinder is equipped with radial groove by the outer wall of front end, and the stabilization card object hook tube head is movably arranged on by the radial groove
The front end of the hand hold transducer cylinder.
5. three visual field optical handheld of novel tubular structure probe according to claim 4, which is characterized in that the stabilization card
Object hook tube head is engraved structure, and the front end of the stabilization card object hook tube head is round estrade, the rear end of the stabilization card object hook tube head
Inner wall is equipped with screw thread, and the stabilization card object hook tube head is movably arranged on described hand-held by the screw thread and the radial groove
The front end of probe barrel.
6. three visual field optical handheld of novel tubular structure probe according to claim 5, which is characterized in that the stabilization card
Limit pressing ring, card object hook, holding clamp and reflecting prism are equipped in object hook tube head；The holding clamp is pressed by the limit
The front end of the hand hold transducer cylinder is arranged in circle, and the front end of the stabilization card object hook tube head is equipped with first through hole, the reflection rib
Mirror is fixed in the first through hole by the holding clamp, and the card object hook passes through the holding clamp, the limit
Pressing ring and the first through hole are arranged along the axial activity of the stabilization card object hook tube head.
7. three visual field optical handheld of novel tubular structure probe according to claim 6, which is characterized in that the stabilization card
The side plate of object hook tube head is equipped with the second through-hole, and second through-hole is equipped with gear, and the gear is fixed on by fixing axle
In second through-hole, the card object hook is equipped with the tooth socket of the corresponding gear.
8. three visual field optical handheld of novel tubular structure probe according to claim 6, which is characterized in that the card object hook
Son is equipped with grab far from one end of the stabilization card object hook tube head.
9. three visual field optical handheld of novel tubular structure probe according to claim 1, which is characterized in that the reflection rib
Mirror is equipped with groove far from the side of the square hole lens, and it is in 45 ° of angles that the two sides of the groove, which are equipped with the scanning light beam,
Inclined-plane.
10. three visual field optical handheld of novel tubular structure described according to claim 1~any one of 9 is popped one's head in, feature exists
In the diameter of the MEMS galvanometer is 2~3mm；The diameter of the objective lens is 12~13mm, and focal length is 75~76mm, and pupil is straight
Diameter is 11~12mm, and F-number is 6~7；
The upper and lower surfaces of the prism wedge are rectangle, and the height of the prism wedge is 11~13mm, the wedge
The upper surface of shape prism is having a size of 8mm × 2mm, and the lower surface of the prism wedge is having a size of 9mm × 3mm；
The diameter of the plano-concave lens is 12~13mm, and concave is 100~110mm；
The front surface and rear surface of the square hole lens are plane, and center square hole, the square hole lens are equipped at its axis
Diameter be 12~13mm, with a thickness of 4~7mm, the aperture of the center square hole is 4mm × 4mm.
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| CN201811525488.4A CN109730693A (en) | 2018-12-13 | 2018-12-13 | A kind of three visual field optical handheld of novel tubular structure probe |
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Application publication date: 20190510 |