CN202351510U - Endoscope micro optical probe - Google Patents
Endoscope micro optical probe Download PDFInfo
- Publication number
- CN202351510U CN202351510U CN2011204588936U CN201120458893U CN202351510U CN 202351510 U CN202351510 U CN 202351510U CN 2011204588936 U CN2011204588936 U CN 2011204588936U CN 201120458893 U CN201120458893 U CN 201120458893U CN 202351510 U CN202351510 U CN 202351510U
- Authority
- CN
- China
- Prior art keywords
- probe
- micro mirror
- circuit board
- endoscope
- mems
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an endoscope micro optical probe which comprises a MEMS (Micro Electro Mechanical System) micromirror, a circuit board, a self-focusing optical component, a positioning bottom plate and a housing, and is characterized in that the endoscope probe adopts an integrally symmetrical structure design; the MEMS micromirror, the circuit board and the self-focusing optical component are assembled on the positioning bottom plate to form a probe main body according to the optical mechanical and electrical design requirements, then the housing of the probe is formed by an injection molding or casting mode, and the housing is tightly combined with the probe main body; and an optical window can be formed on the housing opposite to the micro surface of the MEMS micromirror, or the material of the housing is transparent for used light. According to the utility model, the one-step forming of the probe housing is carried out by adopting the injection molding or casting process and the probe housing with the structure can protect the MEMS micromirror from being influenced by environmental factors and can bear a certain vibration impact and random shock; the sealed probe can be operated in various liquid environments; and the mass and low-cost processing production of the probe can be implemented and the aim of the disposable probe can be fulfilled.
Description
Technical field
The utility model belongs to the Medical Devices technical field, particularly relates to a kind of endoscope micro-optical probe.
Background technology
With micro electro mechanical system (MEMS) technology (microelectromechanical systems; Abbreviation MEMS) scanning micro-mirror and optical coherent chromatographic imaging (Optical Coherence Tomography; OCT) technology combines, and carrying out the endoscopic imaging system exploitation is the main development project of patented claim unit.In the world first MEMS-OCT endoscope probe just by one of member of R&D team of applying unit in calendar year 2001 research and development, this endoscope adopts the one dimension MEMS scanning micro-mirror of electrothermal drive, has successfully showed the two-dimensional section OCT image of live body pig bladder.This probe has been obtained the United States Patent (USP) (patent No.: US7; 450244 Full circumferential scanning OCT intravascular imaging probe based on canning MEMS mirror); Fig. 1 is probe three-dimensional design figure, and it comprises probe base 14, Green lens 12, Transmission Fibers 13, carries out flexible PCB 15 and MEMS micro mirror 11 that the MEMS micro mirror is electrically connected.Probe base 14 designs according to each element size, adopts the electric spark cutting processing; Transmission Fibers 13 fore-ends adopt no gap to be assembled in the corresponding hole slot of probe with Green lens 12 after removing crust; MEMS micro mirror 11 is bonded in respectively in the groove on 45 ° of slopes of probe one end band with flexible PCB 15; Accomplish the assembling of plastic casing 16 at last.
As can beappreciated from fig. 1, the probe base dissymmetrical structure brings big difficulty to processing, is unfavorable for the batch process of popping one's head in.For realizing the popularization of disposable MEMS-OCT probe, adopt design proposal shown in Figure 1 will be subject to development, adopt Wire-cut Electrical Discharge Machining to make the process-cycle elongated, and with high costs, influenced the market development of disposable probe.The utility model is intended to improve OCT endoscope probe structural design; Realize the accurate assembling of each parts of probe; And the mode of production that the adopts injection mo(u)lding batch process of popping one's head in, thereby the control production cost, for the marketing of disposable MEMS-OCT probe is taken a firm foundation.
Summary of the invention
The utility model purpose is to the defective of prior art a kind of endoscope micro-optical probe that adopts injection moulding or casting process moulding to be provided.
The utility model adopts following technical scheme for realizing above-mentioned purpose:
A kind of endoscope micro-optical probe; Comprise MEMS micro mirror, circuit board, self-focusing optics assembly, positioning plate and shell; It is characterized in that: said endoscope probe adopts integrated symmetrical structure design; Said MEMS micro mirror, circuit board and self-focusing optics assembly be assembled on the said positioning plate by the designing requirement of ray machine electricity form probe body, the mode through injection moulding or casting forms probing shell then, combines with probe body tightly.On the shell relative, can be provided with probe window with MEMS micro mirror minute surface.Said window is free form surface and together injection mo(u)lding of shell, has the function of rectification photoscanning figure of formation via the swing of MEMS micro mirror.Said window also can be rectangle or circle.
It is further characterized in that: said positioning plate one end is fixed with L shaped bracing frame, and said L shaped bracing frame angle is 45 degree-60 degree; Said circuit board comprises sloping portion and straight portion; Said sloping portion is fixed on the said L shaped bracing frame; Straight portion is fixed on the said positioning plate, and said circuit board external electric link is realized being connected with external circuit, is arranged at the said positioning plate other end; Conductive adhesive or welding after said MEMS micro mirror aligns with the pad of said circuit board simultaneously; Said positioning base middle part is fixed with two optical module bracing frames respectively, plays the effect that compresses circuit board simultaneously on the said optical module bracing frame, and it is provided with groove; Said self-focusing optics assembly snaps in two bracing frame grooves, simultaneously said optical module shell with near the optical module supporting framing front end face of MEMS micro mirror one side concordant realization locate.
Further: said MEMS micro mirror is formed the micro mirror encapsulation by silicon frame and bottom substrate around the coating window that is coated with optical coating, the micro mirror; Can in silicon frame around the micro mirror, do various rule swings through drive controlling micro mirror minute surface, the pad that is used for the electrical connection of MEMS micro mirror places bottom substrate bottom to be dispersed and distributed.
It is further characterized in that: said MEMS micro mirror profile is square, circular or other polygons.
As a kind of version of circuit board, said circuit board is the integral type circuit board, and on its dip plane of conduction bonding, the other end was the circuit board exit after said MEMS micro mirror alignd with said board pads.
Another kind of version as circuit board; Said circuit board is the separate type circuit board; Its leading-in end interior connection circuit plate and external circuits plate is formed by connecting through splicing ear; Said MEMS micro mirror connects with the corresponding pad conduction of said interior connection circuit plate, and said external circuits plate exit is arranged at external circuits plate afterbody.
Further: said self-focusing optics assembly comprises Transmission Fibers, glass capillary, glass envelope and GRIN Lens; Said Transmission Fibers is inserted in the said glass capillary, is inserted in the glass envelope with GRIN Lens again.
Said endoscope micro-optical probing shell material is transparent plastic or ir transmitting material.
The utlity model has following advantage:
(1) adopt injection moulding/casting process to carry out the probing shell disposal molding, this structure can protect the MEMS micro mirror to avoid such environmental effects, can bear certain vibratory impulse and random shock; The probe of sealing can operation in various liquid environments;
(2) can realize in enormous quantities, the little cost processing of popping one's head in, with the purpose that realizes disposable probe;
(3) shell adopts injection moulding/cast molding, and the shell controllable thickness will make probe microminiaturized more in more among a small circle;
(4) window and shell adopt injection moulding/cast molding simultaneously, have photoscanning figure correcting function the particular curvature window can with the probing shell one-shot forming, need not to increase additional optical elements and carry out the scanning probe figure and correct.
(5) probe adopts the design of modularization layered structure, and the MEMS assembling can be carried out with the optical module packaging technology simultaneously, and technology does not restrict before and after not receiving;
(6) can in open environment, assemble simultaneously, significantly reduce the assembling difficulty, simplify assembly technology, can realize MEMS micro mirror reliability of electrical connection and optical correction's precision are improved in the accurate location of MEMS micro mirror bonding and optical module assembling.
Description of drawings
Fig. 1 is MEMS-OCT old edition probe three-dimensional design;
Among the figure: (11) MEMS micro mirror; (12) Green lens; (13) Transmission Fibers; (14) probe base; (15) flexible PCB; (16) plastic casing.
Fig. 2 is probe outside drawing (plane window and specific free form surface window);
Fig. 3 is the probe cut-open view;
Fig. 4 is the probe body structural drawing;
Fig. 5 is a probe body structure explosive view;
Among the figure: (21) optical fiber link; (22) electric connecting terminal; (23) window; (24) shell; (25) MEMS micro mirror; (26) circuit board; (27) self-focusing optics assembly; (28) positioning plate; (29) L shaped bracing frame; (30) circuit board external electric link.
Fig. 6 is a MEMS micro mirror synoptic diagram;
Fig. 7 is a MEMS micro mirror primary structure explosive view;
Among the figure: (61) coating window; (62) optical coating; (63) silicon frame around the micro mirror; (64) bottom substrate; (73) minute surface; (65) silicon frame around the micro mirror.
Fig. 8 is circular MEMS micro mirror and polygon MEMS micro mirror synoptic diagram;
Fig. 9 is electrically connected circuit board (integral type) for MEMS;
Figure 10 is electrically connected circuit board (separate type) for MEMS;
Among the figure: (31) interior connection circuit plate; (32) external circuits plate leading-in end; (33) external circuits plate; (34) integral type circuit board.
Figure 11 is the optical assembly structure synoptic diagram;
Among the figure: (101) Transmission Fibers; (102) glass capillary; (103) glass envelope; (104) GRIN Lens.
Figure 12 is probe injection molding process 1;
Figure 13 is probe injection molding process 2;
Figure 14 is probe injection molding process 3;
Among the figure: (111) die cavity 1; (112) die cavity 2; (113) probe body; (114) filler opening; (115) probe.
Embodiment
(1) endoscope probe and structure thereof
The key problem that the OCT technology is applied to endoscope is to spy upon in it microminiaturization of head, along with the development of MEMS technology, and the microminiaturization of spying upon in just can realizing ins conjunction with the MEMS micro mirror.
Sonde configuration is designed with side direction scanning and two kinds of patterns of scan forward, and this patent is mainly used in side direction scanning.The probe monnolithic case is as shown in Figure 2; Comprise optical fiber link 21, electric connecting terminal 22, window 23, shell 24; Adopt complete hermetically-sealed construction, both played the effect that protection MEMS micro mirror is avoided such environmental effects, also insulation protection is carried out in the electrical connection of MEMS micro mirror ectonexine; Can guarantee simultaneously that connection is more firm between interior each parts of probe, make the ability of popping one's head in and having certain shock resistance, alleviating random vibration.For the MEMS micro mirror provides the Transmission Fibers of photoscanning and provides electrically driven (operated) electric connection line to draw from the probe afterbody together; Through the incident light of Optical Fiber Transmission and the MEMS micro mirror is angled is incident on the MEMS micro mirror of doing face scanning, scattering does not take place when guaranteeing emergent light through probe window, the probe window surface is a planar structure.Probe window can also be designed with the particular curvature window of photoscanning figure correcting function, can with the probing shell one-shot forming, need not to increase additional optical elements and carry out the scanning probe figure and correct.Said window also can be for square or circular.
Sonde configuration is as shown in Figure 3, and it mainly is made up of MEMS micro mirror 25, circuit board 26, self-focusing optics assembly 27, positioning plate 28 and shell 24.Endoscope probe adopts the integrated symmetrical structure design of simplifying; MEMS micro mirror 25, circuit board 26 and self-focusing optics assembly 27 be assembled in by the designing requirement of ray machine electricity form probe body on the positioning plate; Mode through injection moulding or casting forms probing shell 24 then, combines with probe body tightly.
The major part of probe is a probe body; Like Fig. 4 and shown in Figure 5; Its bottom is a positioning plate 28; The L shaped bracing frame 29 of angled (45 spend to 60 degree) is fixed on said positioning plate 28 right-hand member hole slot places, and its fixing can L shaped bracing frame 29 bottom protrusion insertion in positioning base 28 respective slot through interference fit also can be fixed through spot welding; Circuit board 26 sloping portions that provide MEMS micro mirror 25 drive controlling to be electrically connected are bonded on the L shaped bracing frame 29, and straight portion is bonded on the positioning plate 28 in addition, and circuit board external electric link 30 is realized being connected with external circuit, is placed in the chassis left side afterbody; Carry out conductive adhesive after MEMS micro mirror 25 aligns with the pad of circuit board 26 simultaneously; Two optical module bracing frames 29 insert respectively in positioning plate 28 middle front parts and the postmedian two place's locating slots to be fixed, and also can fix through spot welding, plays the effect that compresses circuit board 26 simultaneously; Self-focusing optics assembly 27 inserts in two optical module bracing frame 29 grooves, and the optics of self-focusing simultaneously assembly 27 shells are concordant with right side optical module bracing frame 29 front end faces.
(2) the utility model probe is formed
This miniature probe critical piece comprises the MEMS micro mirror, is used for circuit board and optical module that MEMS is electrically connected; The MEMS micro mirror adopts me to take charge of the MEMS micro mirror of the totally-enclosed sandwich structure of another invention " a kind of MEMS micro mirror encapsulation " (accepting); Its structure such as Fig. 6 and shown in Figure 7; It is mainly formed the micro mirror encapsulation by silicon frame 63 and bottom substrate 64 around the coating window 62 that is coated with optical coating 61, the micro mirror; Can in silicon frame 63 around the micro mirror, do various rule swings through drive controlling micro mirror minute surface 65, the pad that is used for the electrical connection of MEMS micro mirror places bottom substrate 64 bottoms to be dispersed and distributed.
In addition, the profile of MEMS micro mirror is not limited to square, also can adopt circle or other polygonized structures, and under the constant situation of useful area, the size that can further dwindle the MEMS micro mirror helps further dwindling of probe size.
The circuit board that is used for the MEMS electrical connection can be flexibility or rigid printed circuit board, also can be the circuit board that pottery or glass sintering form, and also can be the electric connector that is used for common IC technology; Can it be designed to two kinds of versions as required; Like Fig. 8 and shown in Figure 9; Fig. 9 is an integral type circuit board 34, and on its dip plane of conduction bonding, the other end was a circuit board external electric link 30 after MEMS micro mirror 25 alignd with board pads; Characteristics are simple in structure, need bending can pay the utmost attention to the selection flexible printed circuit board; Figure 10 is the separate type circuit board; It is formed by connecting through splicing ear the leading-in end of interior connection circuit plate 31 and external circuits plate 33 32; MEMS micro mirror 25 connects with interior connection circuit plate 31 corresponding pad conductions, and circuit board external electric link 30 is arranged at external circuits plate 33 afterbodys, adopts the advantage of separate type to be can be arranged on the hard circuit board with the pad of MEMS bonding; Help the MEMS conductive adhesive, can MEMS be glued the back simultaneously and directly use as the individual module assembly.
After optical module assembles enlarged by Transmission Fibers 101 and glass capillary 102; In glass envelope 103, assemble (shown in figure 11) with GRIN Lens 104 again; Adopt this sonde configuration; Both can guarantee that light beam was incident on MEMS micro mirror center, guarantee again that focused beam had long focusing distance (0 ~ 2.5mm) after passing the cylindrical probe window.Because further microminiaturized MEMS micromirror size and circuit board, the external diameter of cylindrical endoscope probe will narrow down to below 3 millimeters, come direct the use so that can insert the cut sections for microscopic examination passage of most of medical endoscopes, thereby reduce the cost of product.
(3) probing shell processing and fabricating
The moulding of this utility model probing shell can be through injection moulding or cast molding; Its principle process such as Figure 12, Figure 13 and shown in Figure 14; The utility model probe base structural symmetry, plastics probe base mould can be made up of die cavity 1 111, die cavity 2 112 and injection moulding/tapping hole filler opening 114; Place among the die cavity that die cavity 1 111 and die cavity 2 112 form the probe body that assembles 113 and the location, filler is filled to the die cavity internal clearance from filler opening 114, can form probing shell and firmly link together with base.Die cavity 1 111 and die cavity opened with aftertreatment in 2 112 minutes just can obtain probe 115 shown in Figure 13.
Utility model probing shell material can be selected transparent plastic (comprising PC plastics, organic glass), ir transmitting material for use on selecting.The PC Chinese is polycarbonate.It is a kind of novel thermoplastics, and transparent degree reaches 90%, and being described as is transparent metal.It is firm and have toughness, has high impulse strength, the very wide serviceability temperature of the dimensional stability of height and scope, excellent electric insulating can and thermotolerance and avirulence, can through inject, extrusion molding.Can make cup, tube, bottle and the dental appliance of medical application.Drug container and operating theater instruments, even also can be used as artificial organs such as artificial kidney, artificial lung.The PC forming materials is diversified and transparent, just in time satisfies the processing needs of probing shell.
Claims (10)
1. an endoscope micro-optical is popped one's head in; Comprise MEMS micro mirror, circuit board, self-focusing optics assembly, positioning plate and shell; It is characterized in that: said endoscope probe adopts integrated symmetrical structure design; Said MEMS micro mirror, circuit board and self-focusing optics assembly be assembled on the said positioning plate by the designing requirement of ray machine electricity form probe body, the mode through injection moulding or casting forms probing shell then, combines with probe body tightly.
2. endoscope micro-optical probe according to claim 1, it is characterized in that: said positioning plate one end is fixed with L shaped bracing frame, and said L shaped bracing frame angle is 45 degree-60 degree; Said circuit board comprises sloping portion and straight portion; Said sloping portion is fixed on the said L shaped bracing frame; Straight portion is fixed on the said positioning plate, and said circuit board external electric link is realized being connected with external circuit, is arranged at the said positioning plate other end; Conductive adhesive or welding after said MEMS micro mirror aligns with the pad of said circuit board simultaneously; Said positioning base middle part is fixed with two optical module bracing frames respectively, plays the effect that compresses circuit board simultaneously on the said optical module bracing frame, and it is provided with groove; Said self-focusing optics assembly snaps in two bracing frame grooves, simultaneously said optical module shell with near the optical module supporting framing front end face of MEMS micro mirror one side concordant realization locate.
3. endoscope micro-optical probe according to claim 1; It is characterized in that: said MEMS micro mirror is formed the micro mirror encapsulation by silicon frame and bottom substrate around the coating window that is coated with optical coating, the micro mirror; Can in silicon frame around the micro mirror, do various rule swings through drive controlling micro mirror minute surface, the pad that is used for the electrical connection of MEMS micro mirror places bottom substrate bottom to be dispersed and distributed.
4. endoscope micro-optical probe according to claim 3 is characterized in that: said MEMS micro mirror profile is square, circular or other polygons.
5. endoscope micro-optical probe according to claim 2, it is characterized in that: said circuit board is the integral type circuit board, on its dip plane of conduction bonding, the other end was the circuit board exit after said MEMS micro mirror alignd with said board pads.
6. endoscope micro-optical probe according to claim 2; It is characterized in that: said circuit board is the separate type circuit board; Its leading-in end interior connection circuit plate and external circuits plate is formed by connecting through splicing ear; Said MEMS micro mirror connects with the corresponding pad conduction of said interior connection circuit plate, and said external circuits plate exit is arranged at external circuits plate afterbody.
7. endoscope micro-optical probe according to claim 1, it is characterized in that: said self-focusing optics assembly comprises Transmission Fibers, glass capillary, glass envelope and GRIN Lens; Said Transmission Fibers is inserted in the said glass capillary, is inserted in the glass envelope with GRIN Lens again.
8. endoscope micro-optical probe according to claim 1 is characterized in that: on the shell relative with said MEMS micro mirror minute surface, have optical window.
9. endoscope micro-optical probe according to claim 8, it is characterized in that: said window is free form surface and together injection mo(u)lding of shell, has the function of rectification photoscanning figure of formation via the swing of MEMS micro mirror.
10. endoscope micro-optical probe according to claim 8, it is characterized in that: said window is rectangle or circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204588936U CN202351510U (en) | 2011-11-18 | 2011-11-18 | Endoscope micro optical probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204588936U CN202351510U (en) | 2011-11-18 | 2011-11-18 | Endoscope micro optical probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202351510U true CN202351510U (en) | 2012-07-25 |
Family
ID=46540503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204588936U Expired - Fee Related CN202351510U (en) | 2011-11-18 | 2011-11-18 | Endoscope micro optical probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202351510U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401995A (en) * | 2011-11-18 | 2012-04-04 | 无锡微奥科技有限公司 | Micro optical probe of endoscope |
| CN103054544A (en) * | 2012-10-18 | 2013-04-24 | 无锡微奥科技有限公司 | Double-working-mode micro electro mechanical system (MEMS) optical probe |
| WO2022057455A1 (en) * | 2020-09-21 | 2022-03-24 | 佛山光微科技有限公司 | Oct tomography probe, oct imaging system and imaging method |
-
2011
- 2011-11-18 CN CN2011204588936U patent/CN202351510U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401995A (en) * | 2011-11-18 | 2012-04-04 | 无锡微奥科技有限公司 | Micro optical probe of endoscope |
| CN102401995B (en) * | 2011-11-18 | 2013-05-29 | 无锡微奥科技有限公司 | Micro optical probe of endoscope |
| CN103054544A (en) * | 2012-10-18 | 2013-04-24 | 无锡微奥科技有限公司 | Double-working-mode micro electro mechanical system (MEMS) optical probe |
| CN103054544B (en) * | 2012-10-18 | 2014-11-05 | 无锡微奥科技有限公司 | Double-working-mode micro electro mechanical system (MEMS) optical probe |
| WO2022057455A1 (en) * | 2020-09-21 | 2022-03-24 | 佛山光微科技有限公司 | Oct tomography probe, oct imaging system and imaging method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102401995B (en) | Micro optical probe of endoscope | |
| TWI307814B (en) | Nonadjustable focusing type camera module | |
| KR102609371B1 (en) | MEMS actuator package structure | |
| TWI459062B (en) | Integrated circuit package and optical concentrator for use in the integrated circuit package | |
| JP2007144182A (en) | Assembling method for in-vivo imaging device | |
| CN202351510U (en) | Endoscope micro optical probe | |
| JP2008015348A (en) | Optical module and package for the same | |
| JP6321933B2 (en) | Optical transmission module and endoscope | |
| JP2013088525A (en) | Camera module and method for manufacturing camera module | |
| JP2012254176A (en) | Imaging device | |
| JP2015058118A (en) | Endoscope | |
| JP6461816B2 (en) | Imaging apparatus and endoscope apparatus | |
| JP2008246147A (en) | Capsule type medical device | |
| CN111736278A (en) | Optical module | |
| CN102894947B (en) | Micro electromechanical system (MEMS) optical probe | |
| JP2004008638A (en) | Endoscope | |
| CN109952650A (en) | Photographing module and endoscope | |
| TWI275844B (en) | Filter module | |
| JP5165023B2 (en) | Endoscope | |
| WO2015166750A1 (en) | Optical unit and endoscope equipped with optical unit | |
| TWM470270U (en) | Optical sub-assembly | |
| JP2012242658A (en) | Optical fiber socket | |
| JP4426665B2 (en) | Endoscope with diaphragm device | |
| JP2004087718A (en) | Imaging module | |
| CN103142201A (en) | MEMS (micro electronic mechanical system) optical scanning probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |