CN208621784U - A kind of grating waveguide device of flexibility insertion type medical catheter curvature of space detection - Google Patents
A kind of grating waveguide device of flexibility insertion type medical catheter curvature of space detection Download PDFInfo
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- CN208621784U CN208621784U CN201820352393.6U CN201820352393U CN208621784U CN 208621784 U CN208621784 U CN 208621784U CN 201820352393 U CN201820352393 U CN 201820352393U CN 208621784 U CN208621784 U CN 208621784U
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- medical catheter
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Abstract
The utility model is a kind of grating waveguide device of flexible insertion type medical catheter curvature of space detection, belongs to fiber optic sensor technology field.Such as Fig. 1: wideband light source 1, medical catheter 2, optical waveguide 3, wavelength λ1Grating microstructure 4, wavelength λ2Grating microstructure 5, wavelength λ3Grating microstructure 6, covering 7, signal demodulation 8.The polymer material that grating microstructure selects flexible biocompatible good, it is made of microreplicated technology, the polymer that covering choosing matches with sandwich layer, coating thickness is controlled by spin coating method, having a size of 5 μm~10 μm, polymer is covered on the grating microstructure made, grating waveguide device is made.It is λ by wavelength1、λ2、λ3Grating waveguide paste and fix in 120 ° of angles, and need be fixed on medical catheter surface under pre- tension state.It is bent when medical catheter enters human body, according to 3D shape detection algorithm, the bending size and Orientation of conduit can be determined by output signal.
Description
Technical field
The present invention relates to a kind of technical field of optical fiber sensing more particularly to a kind of flexible insertion type medical catheter curvature of space
The grating waveguide device of detection.
Background technique
With the development of the progress society in epoch, many equipment of hospital have all gradually updated, but insertion type is cured
The speed updated with conduit is slower than other equipment.Present insertion type conduit is to get involved in human body using the external force of operator
Diseased region, this there is risk, it is possible to pressure is excessive to will result in disorganization and perforation, and such case be can not
It avoids.In light of this situation, it is therefore necessary to invent a kind of grating light wave of flexible insertion type medical catheter curvature of space detection
Device is led, for detecting the bending size and Orientation of Medical light-guiding pipe in human body.The advantage of this device is: first, not only
It can detecte out the degree of bending and can also detect that curved direction, and this device is suitable for various complicated tables
Face；Second, this device is that have good flexibility and biological safety, while also inheriting using polymeric material
The detectability of fiber grating sensor high sensitivity.
Although present Fiber Bragg Grating technology is very mature, since one side quartz material is inadequate compared with conduit
Softness, the rigidity of the importing meeting additional conduits of fiber grating, so that the yarage of medical catheter is reduced, and second, quartzy material
Expect it is easily broken, when for insertion type medical catheter enter human body after, can not show a candle to the highly-safe and biocompatibility of polymer material
It is good, therefore actually present fiber grating and it is unsatisfactory for needs at this time.
Present grating waveguide generally uses semiconductor lithography process to process, this photoetching process is not only expensive,
Fabrication cycle is also grown, and the needs of batch machining are not suitable for.It is that nanometer is microreplicated that grating waveguide processing technology of the present invention, which uses,
The advantages of technology is suitble to grating waveguide flexible to process, this technology, is: it is not only at low cost, the process-cycle is short, but also
Apparent advantage can be machined with compared with semiconductor lithography with batch machining.
In order to accurately detect the size and Orientation of medical catheter curvature of space, the present invention is by the light of three different wave lengths
Grid optical waveguide is pasted onto the surface of medical catheter in 120 ° of angles.Its purpose is to measure the curvature of space of medical catheter letter
Breath, according to medical catheter 3D shape detection algorithm, can detect the curvature of space size and Orientation of medical catheter, this method
Advantage be: first, precision is high；Second, complicated spatial form can be used in.
Summary of the invention
It is an object of the invention to the needs for the detection of current insertion type medical catheter curvature of space, have devised one kind
The grating waveguide device of flexible insertion type medical catheter curvature of space detection, the device good, biocompatibility with flexibility
Advantage good, degree of safety is high, high sensitivity and detection accuracy are high.
The technical solution adopted by the invention is as follows: being λ including 1 wideband light source, 2 medical catheters, 3 optical waveguides, 4 wavelength1's
Grating microstructure, 5 wavelength are the grating microstructure of λ 2,6 wavelength are the grating microstructure of λ 3,7 coverings and the demodulation of 8 signals, such as Fig. 1
It is shown.The grating waveguide that wavelength is 1 grating waveguide of λ, wavelength is the grating waveguide of λ 2, wavelength is λ 3 is in 120 ° of angles
It is pasted onto the surface of medical catheter, its purpose is to measure the curvature of space information of medical catheter, according to medical catheter three-dimensional
SHAPE DETECTION algorithm, can detect the curvature of space size and Orientation of medical catheter, and this method has complicated spatial form
Very high detection accuracy.And grating waveguide is to paste fixation using both-end point under pre- tension state to be fixed on medical catheter
It is inaccurate to will cause measurement result its purpose is to generate chirp grating after preventing device bend for surface.Grating waveguide by
Polymeric material, and processed using the microreplicated technology of nanometer, screen periods are 0.5 μm~1.2 μm, and sectional dimension is
20 μm~60 μm of width, be highly 2 μm~5 μm, has high good flexibility, good biocompatibility, degree of safety, high sensitivity and inspection
Survey advantage with high accuracy.Covering selects the polymer material to match with grating waveguide, and coating thickness can pass through spin coating method
Control, having a size of 5 μm~10 μm.
The beneficial effects of the present invention are:
1, the present invention is a kind of grating waveguide device of flexible insertion type medical catheter curvature of space detection, is both maintained
Traditional devices high-precision and high sensitivity, and make operation treatment with more safety, accuracy and convenience.
2, the present invention is a kind of grating waveguide device of flexible insertion type medical catheter curvature of space detection, not only can be with
With in the detection of medical catheter curvature of space, other fields for having same technique, such as robot brachiocylloosis may be also used in
Detection etc..
3, using the microreplicated technology of nanometer, the micro element duplication dimensional accuracy of the technology is reachable for sandwich layer part of the present invention
To 10nm, the working ability with very high degree of precision can the inexpensive micro element for producing nanoscale in batches.
Detailed description of the invention
With reference to the accompanying drawing and embodiment the present invention is further described:
Fig. 1 is that a kind of structure of the grating waveguide device of flexible insertion type medical catheter curvature of space detection of the present invention is shown
It is intended to.In Fig. 1: 1 being wideband light source, 2 be medical catheter, 3 be optical waveguide, 4 be wavelength be λ1Grating microstructure, 5 be wavelength
For λ2Grating microstructure, 6 be wavelength be λ3Grating microstructure, 8 for signal demodulate.
Fig. 2 is the grating waveguide in a kind of grating waveguide device of flexible insertion type medical catheter curvature of space detection
Sectional view: 7 be covering.
Fig. 3 is medical in a kind of grating waveguide device of flexible insertion type medical catheter curvature of space detection of the present invention
The sectional view of conduit.In Fig. 3: 9 be wavelength be λ1Grating waveguide, 10 be wavelength be λ2Grating waveguide, 11 are for wavelength
λ3Grating waveguide, 12-14 be conduit in other function pipeline.
Specific embodiment
In Fig. 1, Fig. 2 and Fig. 3, a kind of the technical solution adopted in the present invention: flexibility insertion type medical catheter curvature of space
The grating waveguide device of detection, comprising: wideband light source 1, medical catheter 2, optical waveguide 3, wavelength λ1Grating microstructure 4,
Wavelength is λ2Grating microstructure 5, wavelength λ3Grating microstructure 6, covering 7, signal demodulation 8, wavelength λ1Grating light wave
9 are led, wavelength λ2Grating waveguide 10, wavelength λ3Grating waveguide 11, the pipeline 12-14 of other function in conduit.
The bandwidth light source 1, can export λ0~λnThe light of wavelength passes through grating waveguide reflectance signature wavelength value
Translational movement △ λ can measure the bending situation of medical catheter.
The wavelength is λ1、λ2、λ3Grating waveguide 4-6, using polymer material, with the microreplicated technology system of nanometer
Make.The micrometer-nanometer processing technology of the microreplicated mold of nanometer, the process means used is electron beam lithography combination fast atoms Shu Jiagong
It is processed with reactive ion etching technology, to meet the requirement on machining accuracy of the microreplicated mold of nanometer.Grating waveguide device of the present invention
Part selects heat cure liquid medium effectively to fill mold, then carries out heat cure to replicated architecture, then demoulds micro element, thus
Form the optical grating construction of grating waveguide.
The covering 7, selection are covered on the grating waveguide made with the polymer that sandwich layer matches, and are coated
Thickness be 5 μm~10 μm, the present invention use photoresist spin coating method, in order to avoid there is bubble to be mixed into, it is necessary to clad material into
Row Fruit storage.
The signal demodulation 8, the optical signal △ λ reflected is handled, and detect that the microbend of conduit is big
Small and direction.
The wavelength is λ1、λ2、λ3Grating waveguide 9-11, the surface of medical catheter is pasted onto 120 ° of angles,
Purpose is the curvature of space information in order to measure medical catheter, according to medical catheter 3D shape detection algorithm, can detect to cure
With the curvature of space size and Orientation of conduit, and the high error of precision is small.
The wavelength is λ1、λ2、λ3Grating waveguide 9-11, need to paste fixation using both-end point under pre- tension state
It is fixed on medical catheter surface, is to generate chirp grating after device bend in order to prevent, it is inaccurate to will cause measurement result.
Guiding-tube bend size detection principle of the present invention: principle signal of the grating waveguide for micromachined membrane flexure detection
Figure: after micro-bend flexure occurs for micromachined membrane, corresponding change will occur for the screen periods of grating waveguide thereon, thus
It causes to be moved by the characteristic wavelength that grating waveguide is reflected back, it is assumed that waveguide optical grating mechanical periodicity caused by micro-bend flexure is
△ Λ, then by the Λ of λ=2 neffIt is found that the translational movement △ λ of reflectance signature wavelength value can be expressed as the Λ of λ=2 neff.It uses up
Spectrometer or Wavelength demodulation circuit measure this reflectance signature wavelength shift amount △ λ, so that it may determine the big of the curved deflection of device under test
It is small.
Claims (3)
1. a kind of grating waveguide device of flexibility insertion type medical catheter curvature of space detection, including wideband light source, medical lead
Pipe, the grating microstructure, covering and signal that wavelength is the grating microstructure of λ 1, wavelength is the grating microstructure of λ 2, wavelength is λ 3
Demodulation, it is characterized in that: the grating microstructure selects the polymer material of good biocompatibility flexible, microreplicated using nanometer
Technology production, screen periods are 0.5 μm~1.2 μm, and it is highly 2 μm~5 μm that sectional dimension, which is 20 μm~60 μm of width, wavelength
It is pasted onto the surface of medical catheter in 120 ° of angles for λ 1, λ 2,3 grating waveguide of λ, and is under pre- tension state using both-end point
It pastes fixation and is fixed on medical catheter surface.
2. a kind of grating waveguide device of flexible insertion type medical catheter curvature of space detection according to claim 1,
It is characterized in that: covering coating thickness can be controlled by spin coating method, having a size of 5 μm~10 μm.
3. a kind of grating waveguide device of flexible insertion type medical catheter curvature of space detection according to claim 1,
Match polymer material it is characterized in that: the covering is used with grating waveguide, using polymer heat cure forming method
Preparation.
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| CN201820352393.6U CN208621784U (en) | 2018-03-15 | 2018-03-15 | A kind of grating waveguide device of flexibility insertion type medical catheter curvature of space detection |
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| CN201820352393.6U CN208621784U (en) | 2018-03-15 | 2018-03-15 | A kind of grating waveguide device of flexibility insertion type medical catheter curvature of space detection |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061798A (en) * | 2018-03-15 | 2018-12-21 | 中国计量大学 | A kind of grating waveguide device of flexibility insertion type medical catheter curvature of space detection |
| US11194159B2 (en) | 2015-01-12 | 2021-12-07 | Digilens Inc. | Environmentally isolated waveguide display |
| US11281013B2 (en) | 2015-10-05 | 2022-03-22 | Digilens Inc. | Apparatus for providing waveguide displays with two-dimensional pupil expansion |
| US11307432B2 (en) | 2014-08-08 | 2022-04-19 | Digilens Inc. | Waveguide laser illuminator incorporating a Despeckler |
| US11442222B2 (en) | 2019-08-29 | 2022-09-13 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US11448937B2 (en) | 2012-11-16 | 2022-09-20 | Digilens Inc. | Transparent waveguide display for tiling a display having plural optical powers using overlapping and offset FOV tiles |
| US11543594B2 (en) | 2019-02-15 | 2023-01-03 | Digilens Inc. | Methods and apparatuses for providing a holographic waveguide display using integrated gratings |
| US11586046B2 (en) | 2017-01-05 | 2023-02-21 | Digilens Inc. | Wearable heads up displays |
| US11703645B2 (en) | 2015-02-12 | 2023-07-18 | Digilens Inc. | Waveguide grating device |
| US11726332B2 (en) | 2009-04-27 | 2023-08-15 | Digilens Inc. | Diffractive projection apparatus |
| US11726323B2 (en) | 2014-09-19 | 2023-08-15 | Digilens Inc. | Method and apparatus for generating input images for holographic waveguide displays |
| US11747568B2 (en) | 2019-06-07 | 2023-09-05 | Digilens Inc. | Waveguides incorporating transmissive and reflective gratings and related methods of manufacturing |
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2018
- 2018-03-15 CN CN201820352393.6U patent/CN208621784U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11726332B2 (en) | 2009-04-27 | 2023-08-15 | Digilens Inc. | Diffractive projection apparatus |
| US11448937B2 (en) | 2012-11-16 | 2022-09-20 | Digilens Inc. | Transparent waveguide display for tiling a display having plural optical powers using overlapping and offset FOV tiles |
| US11307432B2 (en) | 2014-08-08 | 2022-04-19 | Digilens Inc. | Waveguide laser illuminator incorporating a Despeckler |
| US11709373B2 (en) | 2014-08-08 | 2023-07-25 | Digilens Inc. | Waveguide laser illuminator incorporating a despeckler |
| US11726323B2 (en) | 2014-09-19 | 2023-08-15 | Digilens Inc. | Method and apparatus for generating input images for holographic waveguide displays |
| US11726329B2 (en) | 2015-01-12 | 2023-08-15 | Digilens Inc. | Environmentally isolated waveguide display |
| US11194159B2 (en) | 2015-01-12 | 2021-12-07 | Digilens Inc. | Environmentally isolated waveguide display |
| US11740472B2 (en) | 2015-01-12 | 2023-08-29 | Digilens Inc. | Environmentally isolated waveguide display |
| US11703645B2 (en) | 2015-02-12 | 2023-07-18 | Digilens Inc. | Waveguide grating device |
| US11281013B2 (en) | 2015-10-05 | 2022-03-22 | Digilens Inc. | Apparatus for providing waveguide displays with two-dimensional pupil expansion |
| US11754842B2 (en) | 2015-10-05 | 2023-09-12 | Digilens Inc. | Apparatus for providing waveguide displays with two-dimensional pupil expansion |
| US11586046B2 (en) | 2017-01-05 | 2023-02-21 | Digilens Inc. | Wearable heads up displays |
| CN109061798A (en) * | 2018-03-15 | 2018-12-21 | 中国计量大学 | A kind of grating waveguide device of flexibility insertion type medical catheter curvature of space detection |
| CN109061798B (en) * | 2018-03-15 | 2024-01-23 | 中国计量大学 | Grating optical waveguide device for flexible interventional medical catheter space bending detection |
| US11543594B2 (en) | 2019-02-15 | 2023-01-03 | Digilens Inc. | Methods and apparatuses for providing a holographic waveguide display using integrated gratings |
| US11747568B2 (en) | 2019-06-07 | 2023-09-05 | Digilens Inc. | Waveguides incorporating transmissive and reflective gratings and related methods of manufacturing |
| US11442222B2 (en) | 2019-08-29 | 2022-09-13 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US11592614B2 (en) | 2019-08-29 | 2023-02-28 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US11899238B2 (en) | 2019-08-29 | 2024-02-13 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
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Granted publication date: 20190319 Termination date: 20200315 |