CN206102712U - Blood vessel navigation based on relevant tomography technique of near -infrared - Google Patents
Blood vessel navigation based on relevant tomography technique of near -infrared Download PDFInfo
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- CN206102712U CN206102712U CN201620800039.6U CN201620800039U CN206102712U CN 206102712 U CN206102712 U CN 206102712U CN 201620800039 U CN201620800039 U CN 201620800039U CN 206102712 U CN206102712 U CN 206102712U
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- blood vessel
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- puncture needle
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Abstract
The utility model discloses a blood vessel navigation based on relevant tomography technique of near -infrared, including consecutive near infrared source, optic fiber interference module, spectrum demodulating equipment, data acquisition device, display module and connect the reference arm and the sample arm of optic fiber interference module respectively, the light that the near infrared source was sent to the optic fiber interference module falls into two the tunnel to be transmitted respectively to reference arm and sample arm, and reference arm forms the reference optical signal with received light signal reflection, and the sample arm projects the received light signal human and collects human reverberation signal formation sample light signal, and the reference optical signal forms interference spectral signature with the sample light signal after the optic fiber interference module, shown by the display module behind spectrum demodulating equipment, near infrared 0 device in proper order. Through adopting the near infrared source as the formation of image light source, carry out visual analysis to the interference spectral signature after handling, can learn in real time that the pjncture needle is in the hematal position condition.
Description
Technical field
This utility model is related to technical field of medical instruments, more particularly to a kind of based on near-infrared coherence tomography techniques
Type blood vessel navigation system.
Background technology
Venous detaining needle is also known as venous catheter needle.The building block of core includes that leading for endovascular softness can be retained in
To (or being sleeve pipe), and stainless guiding puncture nook closing member (draw point).Conduit and draw point are punctured into into together blood vessel when using
It is interior, after conduit fully enters blood vessel, nook closing member is withdrawn out, only soft catheter retaining is controlled in intravascular so as to carry out transfusion
Treat.The correct assurance of guiding puncture nook closing member position, the especially assurance of the position of puncture needle front end have directly to puncture success rate
Connect impact.
Specifically used mode is as follows：
(1) root puncture of conduit inner sleeve one guiding nook closing member, their front end is sharp, and nook closing member itself can also be hollow
Metal tube；
(2) conduit and puncture needle core are together pierced into into body vascular tissue；
(3) nook closing member is released after needle point reaches predetermined depth, conduit is stayed in body.
So, the passage of the blood vessel and the external world is just established, it is critical only that delivers to puncture needle in body vascular tissue,
Guarantee that position is accurate.
With developing rapidly for science and technology and stepping up for people's living standard, the ratio of obese people is also increasingly
Height, and obese people and infant are higher with respect to the prevalence proportions of the crowds such as other normal types.In venipuncture, nurse couple
The blood vessel of colony patient is difficult assessment, there is certain difficulty, while patient can also compare pain when needing transfusion or drawing blood
It is bitter.The colony, due to repeatedly puncturing or puncturing improper caused bicker, even results in medical tangle often in vascular puncture
Occur.But the control of current puncture needle depth has no auxiliary equipment to ensure, rely on the experience of nurse itself, it is impossible to guarantee more
Paracentesis depth controllable precise, acupuncture treatment easily causes sufferer pain.
Utility model content
In view of the deficiency that prior art is present, this utility model is there is provided a kind of paracentesis depth controllable precise, mitigation sufferer
The type blood vessel navigation system based on near-infrared coherence tomography techniques of pain.
In order to realize above-mentioned purpose, this utility model employs following technical scheme：
A kind of type blood vessel navigation system based on near-infrared coherence tomography techniques, including the near infrared light being sequentially connected
Source, fiber optic interferometric module, spectrum demodulating equipment, data acquisition unit, display module and connect the fiber optic interferometric mould respectively
The reference arm and sample arm of block；The fiber optic interferometric module is divided into two-way and is transmitted separately to for the light that near-infrared sends
The optical signal for receiving is reflected to form reference optical signal, the sample by the reference arm and the sample arm, the reference arm
The optical signal for receiving is projected human body and collects the reflected light signal formation sample optical signal of human body, the reference light letter by arm
Number with the sample optical signal transmission to the fiber optic interferometric module after formed interference spectrum signal, successively described in Jing spectrum demodulation
Shown by the display module after device demodulation, data acquisition unit collection.
As one of which embodiment, the sample arm include optical fiber in hollow puncture needle and the puncture needle into
As probe.
Used as one of which embodiment, the imaging fiber is popped one's head in away from the 0.5～3mm of puncture needle end.
Used as one of which embodiment, the puncture needle is inclined with the imaging fiber probe end towards the same side.
As one of which embodiment, the reference arm include light path on set gradually collimating mirror, plus lens and
Reflecting mirror.
As one of which embodiment, if the spectrum demodulating equipment includes dry lenses and CCD.
Used as one of which embodiment, the splitting ratio of the photo-coupler in the fiber optic interferometric module is 70:30、60：
40 or 80:20.
By being used as imaging source using near-infrared light source, the interference spectrum signal after to process enters this utility model
Row visual analyzing, can in real time learn situation of the puncture needle in blood vessel, it is to avoid the phenomenon of blood vessel pierce through occur, alleviate disease
Suffer from pain.
Description of the drawings
Fig. 1 is the structural representation of the type blood vessel navigation system of this utility model embodiment.
Fig. 2 is the puncture needle of this utility model embodiment and the structural representation of the cooperation of imaging fiber probe.
Fig. 3 is the partial sectional view of Fig. 2.
Fig. 4 is the structural representation of the remaining needle of this utility model embodiment.
The interference spectrum signal schematic representation that Fig. 5 shows for the puncture needle of this utility model embodiment in diverse location.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, further describes to this utility model.It should be appreciated that specific embodiment described herein is only to explain this reality
With new, it is not used to limit this utility model.
Refering to Fig. 1, type blood vessel navigation system of the present utility model is based on near-infrared coherence tomography techniques, including phase successively
Near-infrared light source 1 even, fiber optic interferometric module 2, spectrum demodulating equipment 5, data acquisition unit 6, display module 7 and connect respectively
Connect the reference arm 3 and sample arm 4 of fiber optic interferometric module 2；Fiber optic interferometric module 2 is divided into for the light that near-infrared 1 sends
Two-way is transmitted separately to reference arm 3 and sample arm 4, and the optical signal for receiving is reflected to form reference optical signal, sample by reference arm 3
The optical signal for receiving is projected human body and collects the reflected light signal formation sample optical signal of human body, reference optical signal by arm 4
With after sample optical signal transmission to fiber optic interferometric module 2 formed interference spectrum signal, successively Jing spectrum demodulating equipment 5 demodulate, number
Shown by display module 7 after gathering according to harvester 6.
The light Jing fiber optic interferometrics module 2 that near-infrared light source 1 sends is divided into two-way, all the way the imaging fiber in Jing sample arms 4
Probe is projected and focused in tissue, and the reflected light signal organized by optical imagery probe collection obtains sample light letter
Number；Another road obtains reference optical signal into reference arm 3 Jing after the reflecting mirror reflection in it.
Refering to Fig. 2 and Fig. 3, sample arm 4 includes the imaging fiber probe 42 in hollow puncture needle 41 and puncture needle 41.Wear
Pricker 41 is hollow metal tube, and imaging fiber probe 42 is inserted inside hollow metal tubes, imaging fiber probe 42 and puncture needle 41
After fit system and relative position determine, using medical adhesive bonding is carried out, it is ensured that imaging fiber is popped one's head in hollow metal tube
Puncture is organized, and finishes backed off after random in puncture.
The type blood vessel navigation system is based on optical coherence tomography principle, whole system mainly by optical coherence tomography into
As system, three parts of imaging fiber probe 42 and remaining needle constitute, wherein, optical coherence tomography system includes near-infrared
Light source 1, fiber optic interferometric module 2, reference arm 3, spectrum demodulating equipment 5, data acquisition unit 6 and display module 7；As shown in figure 4,
The structure of remaining needle mainly including outer layer indwelling flexible pipe 11, internal layer puncture needle 41, play protection puncture needle act on needle cap 12,
It is easy to what is held to hold needle handle 13 and the extension tube 14 for connecting puncture needle 41 etc., extension tube 14 is connected with indwelling flexible pipe 11, is easy to defeated
Liquid, after imaging fiber probe 42 is fixed with the fit system and relative position of puncture needle 41, needle handle one end is held by the two close
Fixed, imaging fiber probe 42 can enter tissue with the puncture needle 41 of remaining needle, with epiderm skin, blood vessel wall and blood
Contact.Optical coherence tomography system, as light source, using spectrum demodulating equipment interference spectrum is collected using near-infrared laser
Signal, obtains the faultage image information of tissue.After puncture needle 41 reaches specified location, catheter navigation process is completed, and extraction is worn
Pricker 41 and imaging fiber probe 42, indwelling flexible pipe 11 can accurately be retained in the Ink vessel transfusing of tissue to carry out follow-up transfusion
Deng operation.
Because coherence tomography system and imaging fiber probe combine, the interference signal of tissue is may detect, wherein,
The interference signal of skin and blood vessel wall is strong, and the interference signal of blood is weaker, can be visited according to the strong and weak difference of actual signal
The organization type for measuring.Imaging fiber probe enters human body with puncture needle successively percutaneous skin surface, through skin surface, blood
Tube wall etc. is organized, subsequently into Ink vessel transfusing.With reference to Fig. 5, the front end of puncture needle 41 and imaging fiber probe distal end in skin surface and
When in blood vessel wall, there is stronger interference signal, and the depth information of blood vessel wall can be assessed by OCT image；Probe is with puncture
In pin intravasation during blood, the hemoglobin in blood is strong to the absorption effect of near infrared light, big to beam divergence so that dry
Relate to that signal attenuation is very big, the signal of OCT image is weaker, with puncture needle in blood vessel wall obvious difference；When needle pierces blood vessel
Afterwards, can obtain organizing stronger interference signal again.Accordingly, optical signalling is converted by telecommunications by optical coherence tomography system
Number, then through data processing, then show on a display screen.The different tissues classification of probe contacts is assessed by graphical analyses,
Thus can be with location during real-time monitoring retained needle puncture.Realize based on the blood of optical coherence tomography system
Pipe navigates, and solves the problems, such as that the position monitoring of puncture needle and acupuncture treatment are difficult.
During puncture, imaging fiber probe is combined and fixed with the puncture needle of remaining needle, imaging fiber probe 42 is away from puncture
Pin 41 0.5～3mm of end, preferably 1mm, and puncture needle 41 and imaging fiber 42 ends of popping one's head in are inclined (as schemed towards the same side
3), so that the light direction of imaging fiber probe is consistent with the needle point taper face of puncture needle direction, and imaging fiber probe 42 is last
End is at least part of to stretch out puncture needle 41, it is ensured that imaging fiber probe can be focused of the light beam into when entering and organize with puncture needle
It is not blocked in tissue.
The biography light part of imaging fiber probe 42 is made up of general single mode fiber and self-focusing optical fiber, and self-focusing optical fiber goes out
Light end surface grinding has a certain degree so that the direction of outgoing beam and optical fiber axial direction angle are 80 degree.Optic transmission fiber outside has
Spring coil and polyimide transparent sleeve pipe are protected to it, prevent fractureing for optical fiber, and the directly contact with tissue, while
Light output end is protected.The other end of imaging fiber probe is SC/APC joints, is easy to defeated with the light in system sample arm
Go out part connection, by beam Propagation and focusing sample tissue.The diameter of imaging fiber probe can be according to the chi of puncture needle internal diameter
Very little to be adjusted, its diameter range can be adjusted between 0.125mm-0.86mm, it is ensured that the cooperation with puncture needle.Optical fiber into
As the length range of probe is 200mm-250mm, can be adjusted according to actual service conditionss.
Reference arm 3 includes collimating mirror 31, plus lens 32 and the reflecting mirror 33 set gradually in light path, spectrum demodulating equipment
5 include extender lenses, grating, collecting lenses and line array CCD (Charge-coupled Device, charge coupled cell), grating
It is to make light that the optical element of dispersion to occur using many seam diffraction principles, is the characteristics of formation striped after grating：Bright fringe is very
Bright very narrow, the dark space between adjacent bright stricture of vagina is very wide, and diffraction pattern is very clear.There is dispersion in interference spectrum, different after grating
The light beam of wavelength is separated, and by line array CCD the signal after dispersion is received, and process obtains faultage image information, then is adopted by data
Acquisition means 6 are converted optical signal into and carry out after the signal of telecommunication subsequent treatment, finally include faultage image in computer display screen, real
Shi Fanying imaging fibers are popped one's head in and situation of the puncture needle in piercing process.
Here the splitting ratio of the photo-coupler in preferred fiber intervention module 2 is 70:30, the light that near-infrared light source sends is first
First Jing 70：30 beam splitter is divided into two-way light, wherein the imaging fiber probe in 70% light beam Jing sample arms all the way, projection is simultaneously
Tissue is focused on, and sample optical signal is obtained by imaging fiber probe collection tissue retroreflection optical signal；Remaining 30%
Light is returned into Jing reflecting mirrors after reference arm and obtains reference optical signal.The light beam Jing bonders that sample arm and reference arm are returned occur
Interfere, obtain the interference spectrum signal comprising sample tissue structural information, and interference spectrum signal is detected by spectrum demodulating equipment,
Being converted to digital signal through AD capture cards carries out follow-up data process.
In other embodiments, the splitting ratio of photo-coupler can be selected as needed, and such as 60:40 or 80:20.
Specifically when catheter navigation is carried out using above-mentioned type blood vessel navigation system, it is firstly inserted into puncture needle 41 and imaging fiber is visited
42, and the image of Real Time Observation display module 7；Then according to the light intensity change feelings of interference signal in the image of display module 7
Condition judges the puncture position of puncture needle 41, the drawn optical fiber imaging probe 42 when significantly decaying occurs in interference signal.
When imaging fiber probe 42 is contacted with different tissues, the interference signal intensity of collection is different, concrete judge process
It is as follows：
(1) when puncture needle 41 is outside human body, imaging fiber probe can detect skin surface, corium in skin surface
The interference signal of layer, signal intensity is strong.
(2) when the process before the intravasation of puncture needle 41, imaging fiber probe may detect vascular wall tissue information, according to
Interference signal and faultage image can obtain the thickness information of blood vessel wall.The interference signal of blood vessel wall, compared with skin surface, becomes
Change less, interference signal is stronger.
(3) inside puncture needle intravasation, imaging fiber probe is entered in blood with puncture needle, imaging fiber probe quilt
Blood is surrounded, and interference signal is significantly decayed, and mainly the hemoglobin of blood vessel is strong to near-infrared absorption effect, most of red
Light by hemoglobin absorption, and by signal dispersion, now imaging fiber probe detection to light intensity be reduced to certain level.
(4) if puncture needle continues to prick forward, during from puncture needle and blood vessel to puncture needle pierce through blood vessel, imaging fiber
The light intensity of probe detection can be raised, and stronger interference signal occur, and the feature of signal is raised immediately for interference signal,
Then slowly decline.
Accordingly, during puncture needle carrying imaging fiber probe is punctured, can be according to different tissues and blood red egg
The white absorbing state to HONGGUANG affects to assess position and the puncture state of puncture needle to interference signal power.Optical coherence breaks
Layer imaging system can obtain the interference signal of internal blood vessel, extravascular, epidermal area, and take on a different character.Therefore, can root
According to different interference signals, tissue class is judged, and then assess puncture needle location in piercing process, judge whether to puncture
Success, it is to avoid pierce through blood vessel.The effect that near-infrared is scattered by hemoglobin substantially, can be as acupuncture treatment air navigation aid, by near
Infrared optics coherence tomography techniques principle determines position of the puncture needle in vascular puncture.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of without departing from the application principle, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (7)
1. a kind of type blood vessel navigation system based on near-infrared coherence tomography techniques, it is characterised in that including what is be sequentially connected
Near-infrared light source (1), fiber optic interferometric module (2), spectrum demodulating equipment (5), data acquisition unit (6), display module (7) and
Connect the reference arm (3) and sample arm (4) of the fiber optic interferometric module (2) respectively；The fiber optic interferometric module (2) is for nearly
The light that infrared light supply (1) sends is divided into two-way and is transmitted separately to the reference arm (3) and the sample arm (4), the reference arm
(3) optical signal for receiving is reflected to form into reference optical signal, the optical signal for receiving is projected human body by the sample arm (4)
And collect the reflected light signal of human body and form sample optical signal, the reference optical signal and the sample optical signal transmission are to described
Fiber optic interferometric module (2) forms afterwards interference spectrum signal, successively spectrum demodulating equipment (5) demodulation, data acquisition unit described in Jing
(6) shown by the display module (7) after gathering.
2. the type blood vessel navigation system based on near-infrared coherence tomography techniques according to claim 1, it is characterised in that
The sample arm (4) includes imaging fiber probe (42) in hollow puncture needle (41) and the puncture needle (41).
3. the type blood vessel navigation system based on near-infrared coherence tomography techniques according to claim 2, it is characterised in that
Imaging fiber probe (42) is away from the puncture needle (41) 0.5～3mm of end.
4. the type blood vessel navigation system based on near-infrared coherence tomography techniques according to claim 2, it is characterised in that
The puncture needle (41) pops one's head in (42) end towards the same side inclination with the imaging fiber.
5., according to the arbitrary described type blood vessel navigation system based on near-infrared coherence tomography techniques of claim 1-4, it is special
Levy and be, the reference arm (3) includes the collimating mirror (31), plus lens (32) and reflecting mirror (33) set gradually in light path.
6., according to the arbitrary described type blood vessel navigation system based on near-infrared coherence tomography techniques of claim 1-4, it is special
Levy and be, the spectrum demodulating equipment (5) is if including dry lenses and CCD.
7., according to the arbitrary described type blood vessel navigation system based on near-infrared coherence tomography techniques of claim 1-4, it is special
Levy and be, the splitting ratio of the photo-coupler in the fiber optic interferometric module (2) is 70: 30,60: 40 or 80: 20.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620800039.6U CN206102712U (en) | 2016-07-27 | 2016-07-27 | Blood vessel navigation based on relevant tomography technique of near -infrared |
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| CN201620800039.6U CN206102712U (en) | 2016-07-27 | 2016-07-27 | Blood vessel navigation based on relevant tomography technique of near -infrared |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106236205A (en) * | 2016-07-27 | 2016-12-21 | 深圳市中科微光医疗器械技术有限公司 | A kind of type blood vessel navigation system based on near-infrared coherence tomography techniques and method |
| CN115607240A (en) * | 2022-09-29 | 2023-01-17 | 山东探微医疗技术有限公司 | Automatic blood vessel avoiding scalpel system |
-
2016
- 2016-07-27 CN CN201620800039.6U patent/CN206102712U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106236205A (en) * | 2016-07-27 | 2016-12-21 | 深圳市中科微光医疗器械技术有限公司 | A kind of type blood vessel navigation system based on near-infrared coherence tomography techniques and method |
| CN115607240A (en) * | 2022-09-29 | 2023-01-17 | 山东探微医疗技术有限公司 | Automatic blood vessel avoiding scalpel system |
| CN115607240B (en) * | 2022-09-29 | 2024-02-06 | 山东探微医疗技术有限公司 | Automatic dodge vascular scalpel system |
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