CN1547447A - Cable having signal conductors surrounding optically transmissive core for remote imaging system - Google Patents
Cable having signal conductors surrounding optically transmissive core for remote imaging system Download PDFInfo
- Publication number
- CN1547447A CN1547447A CNA028167759A CN02816775A CN1547447A CN 1547447 A CN1547447 A CN 1547447A CN A028167759 A CNA028167759 A CN A028167759A CN 02816775 A CN02816775 A CN 02816775A CN 1547447 A CN1547447 A CN 1547447A
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- Prior art keywords
- cable
- electric wire
- core
- assembly according
- wires
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/313—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for introducing through surgical openings, e.g. laparoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4416—Heterogeneous cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- General Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Communication Cables (AREA)
- Endoscopes (AREA)
Abstract
An optical imaging system with a flexible cable having a first end and a second end. The cable has a central core element including a flexible optical conduit, with a number of wires surrounding the core element to form a tube concentric with an axis defined by the center of the core. The cable has a conductive shield layer surrounding the wires and uniformly spaced apart from the wires. An electronic instrument is connected to the first end of the cable and has an illuminator coupled with the optical conduit and a display device connected to the wires. An image transducer is connected to the second end of the cable and is connected to the wires. The wires may be twisted pairs evenly spaced apart from each other, and evenly spaced apart from an axis defined by the core.
Description
Invention field
The present invention relates to the cable of many electric wires, relate more specifically to be used for the cable of remote imaging systems.
Background of invention
Remote imaging systems is used to observe inconvenience and normally carries out anthroposcopy or the inconvenient object that uses traditional imaging tool.The limited image converter of size only can be set so that observe, and signal will be delivered to remote position in order to observe.For example, the surgeon utilizes optical imagery to pop one's head in and observes interior tissue so that diagnose or surgical operation.This type systematic needs the most small-sized many electric wires assembly to be delivered on the exterior display screen by the image of charge-coupled device (CCD) record.
For surgical operation and other purposes, wish to make the size of cable to reach minimum.Limited diameter helps the motility of realizing ideal.But detailed real time imaging needs significant bandwidth, thereby needs many separate conductors with assigned frequency power.In order to avoid forming the cable of undesirable large volume when a large amount of lead of needs, adopted very thin lead.In order to limit electric noise and influencing each other under high signal frequency, lead is wanted conductively-closed usually.A kind of typical scheme has been used very thin coaxial electric wire, and these electric wires are bunchy setting in a cable.Every wire all has the screen layer of himself, and it can provide suitable protection to interfere to avoid producing mutually under high frequency.
Meet the demands though can operate, many coaxial assemblies still have some shortcomings.The manufacturing cost of thin coaxial electric wire is than the receivable cost height of many occasions.The mode of the coaxial electric wire that termination is very thin is complicated and expensive.And owing to need have specified gap between core lead and screen layer, therefore, undesirable maximization can appear in coaxial electric wire.
For Low Voltage Differential Signal (LVDS) communication, two electric wires of turning round are effectively used.But for the electric wire of extra fine wire rule with for high frequency required in some purposes, two electric wires of turning round have critical limitations.Problem is that these pairs are turned round electric wire and have different electrical characteristics according to described protective layer in the time will two turning round that electric wire is bundled into bundle and be surrounded by an adequate shielding layer.Turn round electric wire with other pair and compare, some two electric wires more close screen layers inevitably of turning round, thereby when signal in the different time, through different two when turning round electric wire arrival, these pairs are turned round electric wire can cause impedance contrast XOR signal skew jointly.These distortion can the spendable signal ratio of restriction, and this is to need to pay close attention to for the required very little lead of tiny, softish cable, and this cable needs a large amount of circuits.
Another shortcoming of present system is: these systems do not have light source, so need to hold second cable in surgeon's hands, so that through the fibre bundle transmission ray.The combination of each bar separate cable causes carrying out comparatively difficulty of surgical operation, and need open a bigger operative incision on one's body the patient.In addition, attempt to make two cables to form one and know from experience the excessive cable of formation rigidity, this cable lacks ideal flexibility because of the overall dimensions of himself.
Summary of the invention
The limitation of the present invention by providing a kind of optical imaging system to overcome prior art, this optical imaging system have a flexible cable with first end and second end.Described cable has Central Line's core element, and this element comprises a flexible optical conduit, and has many wires, and these staple for electric wires coiling core elements are to form a concentric pipe of axis that limits with central authorities by core.Cable has a screen layer, this screen layer surround described electric wire and with its distance be impartial.One electronic component links to each other with first end of cable and has an illuminator that links to each other with optical catheter and a display device that links to each other with described electric wire.An image converter links to each other with second end of cable and links to each other with described electric wire.Electric wire can adopt two that mutual distance equates to turn round electric wire, and equates with the axial line distance that is limited by core.
Brief description of drawings
Fig. 1 is the broken-open perspective view of the cable assembly of a most preferred embodiment among the present invention.
Fig. 2 is the broken-open perspective view of the cable assembly parts of a most preferred embodiment among the present invention.
Fig. 3 is the section end view of the cable assembly of a most preferred embodiment among the present invention.
Fig. 4 is according to most preferred embodiment of the present invention, has used the broken-open perspective view of the imaging device of cable assembly.
The detailed description of most preferred embodiment
Fig. 1 has shown a kind of flexible cable assembly 10 that is used for high-frequency signal or high speed data transfer.This cable comprises that 12, one groups of cores twoly turn round electric wire 14 with what helical form coiling core twined, and an exoperidium part 16.
Core has a flexible optical conduit, and this conduit is provided with a branch of optical fiber 20 that transmits light.Described optical fiber is by a spiral metal armor 22 parcels, and its internal diameter is 0.160, and external diameter is 0.200.The armor role is for providing cylinder form, and the cross section of this shape can not produce very large departing under the pressure effect of back, has uniform distance to keep two electric wires of turning round apart from the axis of cable.Described armor provides shielding by the thin mask tape 23 of a spiral parcel.Described band is low friction fluoro-containing copolymer film, and its thickness is 0.002 inch, and width is 0.125 inch, and twines in 45% mode that overlaps.In most preferred embodiment, conduit is provided with 2050 optical fiber, and for total body diameter of 3.5mm, each root optical fiber all has the numerical aperture of .66 and has 70 microns diameter, and has 80% optical fiber packed density.
As following detailed description the in detail, each pair turned round the electric wire that electric wire 14 includes two helical form twistings, and this two wire shields each other and is wrapped in the conformal foreskin.Turn round electric wire though be provided with nine pairs, this quantity can not be subjected to the variation of any restriction according to the needs of certain applications.Each two foreskin of turning round electric wire all has 0.030 inch diameter, and it allows each twoly to turn round the electric wire foreskin all can be resisted against core in its whole length range surface, and is adjacent to each other with adjacent two foreskins of turning round electric wire.So just, can guarantee each two turn round electric wire all with the core lead and with adjacent pair turn round the identical command ranges of electric wires maintenance.
In most preferred embodiment, two electric wires of turning round twine with helical form coiling core.Winding angle makes each two turn round the electric wire once complete winding of core realization that wind the line in whole 2.0 inches cable length scope.Winding angle can varied slightly to adapt to two turn round electric wire foreskin diameter and core foreskin diameter variation.If two electric wires of turning round have the size that can be adjacent to each other and be resisted against on the core, so two diameter of wire overgauge value or wire core diameters turned round all can force at least one twoly to turn round electric wire and be not abutted against with core less than the varied slightly of standard value.But, reduce the generation that two sizes (and/or size of increasing core) of turning round electric wire just can be avoided this problem in a predefined manner slightly.In this case, twoly turn round electric wire by twining with helical form, if can avoid two turn round electric wire parallel with core and produce pair turn round predetermined gaps between the electric wire.In fact, can determine the number of degrees of winding angle by two geometries of turning round electric wire and core, and for less two turning round for the diameter of wire, winding angle can increase (and two complete spiral of a circle of turning round electric wire length of curling up can reduce).
Twine two electric wires of turning round by a strip 26 with helical form, this strip is in intermediate fabrication steps and at the whole life period of cable, can pair turn round electric wire and be fixed on the core.The described band of tensioning slightly is biased on the core will two turning round electric wire, and can prevent the generation in gap when cable is crooked during use.Described band is the fluoro-containing copolymer film of low friction, and its thickness is 0.004 inch.Width at band is 0.5 inch, and two external diameters of turning round electric wire and core bundle are under 0.290 inch the situation, and described tape winding reaches one inch around about three circles, and the Duplication between take-up strap is 30%.
One outer sheath 34 closely surrounds screen layer and thickness is 0.030 inch, and protects it can not damage.Outside foreskin is made of flexible polyurethane, and preferably form around the two extruding of described screen layer.The external diameter of final cable is 0.390 inch.
Fig. 2 has shown single two electric wire 14 of turning round in detail.Two each wire of turning round in the electric wire all have the lead 40 that become by the 32AWG copper, and this lead is 0.003 inch by wall thickness and is surrounded by the shielding foreskin 42 that fluoropolymer is made.The external diameter of the electric wire that each holds is 0.015 inch.Electric wire is with helical form, twines around the twisting rate of complete 3 circles with per inch.In some purposes, the twisting rate can be formulated to avoid producing undesired interference between the electric wire adjacent two turning round with different ratios.For example, described twisting rate can change between two different values, so that adjacent twoly turn round electric wire and can not interact.Electric wire contacts with each other along their whole length on an axis.In most preferred embodiment, electric wire is encapsulated in the foreskin of being made by polymeric material 44.Described foreskin forms around the two extruding of electric wire, and its external diameter is 0.045 inch, or is two 1-1/2 times of turning round the diameter of wire.
As described in explanation reaches in most preferred embodiment, find: cable can be realized each two data transfer rate of turning round electric wire 100~655Mits/sec.It is used for length is 18~120 inches cable.For the occasion of mobile connector (as for input equipment that is connected to computer equipment or electronic equipment or transducer) easily, when the very thin electric wire that is adopted need be guaranteed to have flexibility, believe that the required cable length of other purpose is long more, just need bigger lead more.Though these cables can adopt the principle that is used to disclose and illustrate most preferred embodiment,, they are next not too suitable in the situation that needs repeated flex.
As shown in Figure 4, in imaging system 50, used cable 10.This system comprises an instrument 52, cable 10 and a video camera 54.Cable 10 has first end 56 that links to each other with instrument, and second end 60 that links to each other with video camera.
Instrument has a housing 62 that has adapter 64.Fibre-optic catheter 66 makes collecting lens 72 that light source is connected to conduit, is extending to a light source as bulb 70 from adapter 64 through one in the housing.One group of electric wire 74 extends to a component 76 from adapter in housing.An electronic display 80 is connected to described circuit with electric form.The effect of described circuit is to receive electricity coding dynamic image data through cable, and it is decoded so that show on screen.
The instrument adapter comprises an interface, and it is suitable for making the optical catheter 66 in the housing to link to each other with the fibre bundle 20 of cable.Equally, described adapter comprises the element that electric wire 74 is linked to each other with the electric wire of cable.In an alternate embodiments, can for good and all cable be fixed on the housing, so that do not need adapter, and optical fiber is enough to extend to light source, and cable and wire is connected directly to described circuit.
Video camera 54 is a kind of midget plant, and it has housing 82, and this housing has a chamber 84, and a charge coupled device (CCD) 86 is housed in this chamber.In alternate embodiments, can use any electronic image transducer that is suitable for producing the signal of telecommunication, can decode to the signal of telecommunication that this transducer produces and be formed on image on the transducer face so that reduce.Lens 90 in the housing are positioned on the axis of imaging surface of CCD, to form the image of object 92 on imaging surface.The electric wire 14 of cable is linked to each other, so that on screen 80, show corresponding electronic image 92 ' with CCD.
The illumination of object is provided by the light of carrying by fibre bundle.The end of fibre bundle 20 is positioned near the imaging len 90, so that the light that sends is luminous along the optical axial direction of lens.In an alternate embodiments, but the optical fiber end coiled is as the coaxial distribution of lens.In when work, video camera is away from instrument, and adjacent with the object of want imaging.In medical application, video camera can be arranged in patient's the body.Video camera and surgery instrument (as endoscope) can be installed together.
Though made above explanation according to most preferred embodiment and alternate embodiments,, the present invention should not be limited to this.For example, can replace fibre bundle with the pick off or the element that need the protection of spiral armor.
Claims (20)
1. cable assembly, it comprises:
A central optics conduction flexible wires core element;
Many two electric wires of turning round around the core element; And
Described two electric wire mutual distance equalization of turning round is to form the pipe of a coiling core.
2. assembly according to claim 1, wherein: turn round electric wire and be adjacent to each other for described pair.
3. assembly according to claim 1, wherein: two electric wires of turning round are against described core.
4. assembly according to claim 1, wherein, two distances of turning round electric wire and the axis that is limited by core are impartial.
5. assembly according to claim 1, wherein, described core comprises a branch of optical fiber.
6. assembly according to claim 1, it comprises a screen layer, this screen layer surrounds twoly to be turned round electric wire and equates with its distance.
7. assembly according to claim 1, it comprises first end and a bonded light source of core at cable, and an optical converter, this transducer links to each other with two electric wires of turning round at the second opposite end of cable.
8. assembly according to claim 7, it comprises a display device, this display device links to each other with two electric wires of turning round at second end of cable.
9. assembly according to claim 1, wherein, every wire is all packed to form a cylindrical outer surface.
10. cable assembly, it comprises:
Central Line's core element, this element comprise an optical catheter that transmits light;
Many conductive electric wires around the core element;
The distance of described electric wire and core is impartial to form the pipe of a coiling core; And
Described electric wire distance to each other is impartial.
11. assembly according to claim 10, wherein: two electric wires of turning round are adjacent to each other.
12. assembly according to claim 10, wherein: two electric wires of turning round are against described core.
13. assembly according to claim 10, wherein, described electric wire is abutted against each other.
14. assembly according to claim 10, wherein, described core comprises a branch of optical fibers.
15. assembly according to claim 10, it comprises a screen layer, this screen layer surround described electric wire and with its distance be impartial.
16. assembly according to claim 10, it comprises first end and a bonded light source of core at cable, and an optical converter, and this transducer links to each other with described electric wire at the second opposite end of cable.
17. assembly according to claim 18, it comprises a display device, and this display device links to each other with described electric wire and is exercisable, so that show the image that is produced by described transducer.
18. assembly according to claim 10, wherein, each described electric wire is two electric wires of turning round.
19. an optical imaging system, it comprises:
Flexible cable with first end and second end;
Described cable has Central Line's core element, and this element comprises a flexible optical conduit;
Described cable comprises many wires, and these staple for electric wires coiling core elements are to form a concentric pipe of axis that limits with central authorities by core;
Described cable comprises a screen layer, this screen layer surround described electric wire and with its distance be impartial;
An electronic instrument, this electronic instrument links to each other with first end of cable and has an illuminator that links to each other with optical catheter and a display device that links to each other with described electric wire; And
An image converter, this transducer links to each other with second end of cable and links to each other with described electric wire.
20. system according to claim 19, wherein, described electric wire is that two that mutual distance equates turn round electric wire, and equates with the axial line distance that is limited by core.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/916,728 US7289705B2 (en) | 2001-07-26 | 2001-07-26 | Cable having signal conductors surrounding optically transmissive core remote imaging system |
US09/916,728 | 2001-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1547447A true CN1547447A (en) | 2004-11-17 |
Family
ID=25437735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNA028167759A Pending CN1547447A (en) | 2001-07-26 | 2002-02-06 | Cable having signal conductors surrounding optically transmissive core for remote imaging system |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1408810A2 (en) |
JP (1) | JP2005526263A (en) |
KR (1) | KR20040048885A (en) |
CN (1) | CN1547447A (en) |
AU (1) | AU2002243958A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102017622A (en) * | 2008-03-07 | 2011-04-13 | 密尔沃基电动工具公司 | Visual inspection device |
CN103366892A (en) * | 2012-04-06 | 2013-10-23 | 住友电气工业株式会社 | Photoelectric composite cable |
CN109077695A (en) * | 2018-08-16 | 2018-12-25 | 苏州中科先进技术研究院有限公司 | Endoscope insertion tube and endoscope |
CN110477843A (en) * | 2019-09-17 | 2019-11-22 | 重庆金山医疗技术研究院有限公司 | Guide-lighting hose and endoscopic system |
CN111834051A (en) * | 2020-07-13 | 2020-10-27 | 中达电子(江苏)有限公司 | Wire manufacturing method for magnetic component, wire, inductor and transformer |
WO2021196771A1 (en) * | 2020-04-03 | 2021-10-07 | 中国科学院深圳先进技术研究院 | Optical-ultrasonic dual-modality imaging-based capsule endoscope |
-
2002
- 2002-02-06 JP JP2003517647A patent/JP2005526263A/en active Pending
- 2002-02-06 KR KR10-2004-7001102A patent/KR20040048885A/en not_active Application Discontinuation
- 2002-02-06 CN CNA028167759A patent/CN1547447A/en active Pending
- 2002-02-06 EP EP02709476A patent/EP1408810A2/en not_active Withdrawn
- 2002-02-06 AU AU2002243958A patent/AU2002243958A1/en not_active Abandoned
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102017622A (en) * | 2008-03-07 | 2011-04-13 | 密尔沃基电动工具公司 | Visual inspection device |
CN102017622B (en) * | 2008-03-07 | 2015-08-26 | 密尔沃基电动工具公司 | Vision inspection apparatus |
CN103366892A (en) * | 2012-04-06 | 2013-10-23 | 住友电气工业株式会社 | Photoelectric composite cable |
CN109077695A (en) * | 2018-08-16 | 2018-12-25 | 苏州中科先进技术研究院有限公司 | Endoscope insertion tube and endoscope |
CN110477843A (en) * | 2019-09-17 | 2019-11-22 | 重庆金山医疗技术研究院有限公司 | Guide-lighting hose and endoscopic system |
WO2021196771A1 (en) * | 2020-04-03 | 2021-10-07 | 中国科学院深圳先进技术研究院 | Optical-ultrasonic dual-modality imaging-based capsule endoscope |
CN111834051A (en) * | 2020-07-13 | 2020-10-27 | 中达电子(江苏)有限公司 | Wire manufacturing method for magnetic component, wire, inductor and transformer |
Also Published As
Publication number | Publication date |
---|---|
EP1408810A2 (en) | 2004-04-21 |
KR20040048885A (en) | 2004-06-10 |
AU2002243958A1 (en) | 2003-02-17 |
JP2005526263A (en) | 2005-09-02 |
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