CN107550443A - A kind of OCT catheter interiors pumpback device - Google Patents
A kind of OCT catheter interiors pumpback device Download PDFInfo
- Publication number
- CN107550443A CN107550443A CN201710744900.0A CN201710744900A CN107550443A CN 107550443 A CN107550443 A CN 107550443A CN 201710744900 A CN201710744900 A CN 201710744900A CN 107550443 A CN107550443 A CN 107550443A
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- China
- Prior art keywords
- pumpback
- optical fiber
- interiors
- fibre
- oct catheter
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- 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.)
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- 239000013307 optical fiber Substances 0.000 claims abstract description 40
- 239000003292 glue Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 9
- 238000003745 diagnosis Methods 0.000 abstract description 3
- 210000004400 mucous membrane Anatomy 0.000 abstract description 3
- 238000012014 optical coherence tomography Methods 0.000 description 25
- 238000005516 engineering process Methods 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 5
- 239000010721 machine oil Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- A61B1/04—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 combined with photographic or television appliances
- A61B1/05—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 combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Radiology & Medical Imaging (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a kind of OCT catheter interiors pumpback device, including optical fiber, sebific duct and fibre-optical splice, cavity is provided with the sebific duct, one end of the optical fiber is entered in the cavity in entering glue pipe through one end of sebific duct, the other end of the optical fiber is provided with fibre-optical splice, and the fibre-optical splice is used to connect with an electric rotating machine.The frictionally damage of patient's body tube chamber road mucous membrane caused by the OCT catheter interior pumpback devices of the present invention can effectively solve the problem that conduit pumpback, improve the comfortableness of patient's diagnosis.
Description
Technical field
The present invention relates to a kind of technical field of medical instruments, more particularly to a kind of OCT catheter interiors pumpback device.
Background technology
Optical interference tomography technology (Optical Coherence Tomography, OCT) is that one kind is based on weak phase
Dry interference of light principle, biological tissue is obtained to the back-reflection or scattered signal of the weak coherent light of incidence by detecting different tissues
Two dimension or three-dimensional structure optical image technology.It was carried first by the research group of Massachusetts Institute Technology in 1991
Go out, because it has the advantages that to be imaged fast, high resolution, non-intrusion type, be applied widely in medical domain.
At present, both at home and abroad on optical interference tomography technology research focus primarily upon ophthalmology, human body skin section with
And the OCT technology and equipment of cardiovascular field, not corresponding exploitation are actually available to the OCT medical treatment in human body open pipes cavity
Equipment.In general OCT equipment is only applicable to the imaging in the tissue of single position, but the information that is showed of single section often compared with
To be limited, it has not been convenient to be also unfavorable for type and size that healthcare givers precisely determines focus, it is therefore necessary to which addition can drive scanning
The module that conduit in axial direction moves, so as to realize that carrying out certain axial distance to human body open pipes cavity organization is scanned into
Picture.By the pumpback imaging of one section of axial distance can more clearly from judge the form of institutional framework, diseased region position
And the key message such as size, because OCT scan technology can obtain the radial depth information of detection tissue, therefore carrying out axially
The three-dimensional structure of the detection tissue can be obtained while pumpback scanning imagery.
Existing OCT axial directions pumpback scan module is moved using the overall pumpback vertically of OCT conduits in scanning
Some following deficiency be present in solution, the program：Firstth, the overall pumpback movement of OCT conduits easily causes patient's body pipe
The frictionally damage of cavity mucous membrane；Secondth, easily there is jitter phenomenon in the overall pumpback movement of OCT conduits, so as to cause reconstruct image
As occurring distorting or deforming；3rd, easily cause when the overall pumpback movement and the road mantle friction of patient's body tube chamber of OCT conduits
The secondary discomfort of patient, and then cause patient to treat the corresponding problem that fitness declines and thus brought.Therefore, there is an urgent need to
It is a kind of it is brand-new, can solve the problem that above-mentioned insufficient OCT conduit pumpback devices.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of OCT catheter interiors pumpback device, its
Can solve OCT conduit entirety pumpback movement and the technical problem shaken occur.
The purpose of the present invention adopts the following technical scheme that realization：
A kind of OCT catheter interiors pumpback device, including optical fiber, sebific duct and fibre-optical splice, cavity is provided with the sebific duct,
One end of the optical fiber is entered in the cavity in entering glue pipe through one end of sebific duct, and the other end of the optical fiber is provided with optical fiber and connect
Head, the fibre-optical splice are used to connect with an electric rotating machine.
Further, in addition to fixing device, be provided with first passage in the fixing device, the optical fiber through this
One passage, the fixing device are arranged between fibre-optical splice and sebific duct.
Further, in addition to optical fiber fixing pipe, the optical fiber fixing pipe are arranged in first passage, and the optical fiber is fixed
Pipe is fixed with optical fiber.
Further, second channel is provided with the fixing device, the second channel connects with first passage, and institute
State and pressure equilibrium module is provided with second channel, the pressure equilibrium module is used to maintain in first passage and second channel
Pressure is constant.
Further, the pressure equilibrium module is atmospheric pressure compensating block or pressure equilibrium air bag.
Further, it is provided with index-matching fluid in the first passage and second channel.
Further, in addition to the first sealing ring and the second sealing ring, first sealing ring are arranged at pressure equilibrium mould
At block, first sealing ring is used to prevent index-matching fluid from overflowing, and second sealing ring is arranged at first passage, institute
The second sealing ring is stated to be used to prevent index-matching fluid from overflowing.
Further, first sealing ring is that either square ring or built-up coil, second sealing ring are O-ring
O-ring either square ring or built-up coil.
Further, in addition to joint fixing pipe, the joint fixing pipe are arranged at outside fibre-optical splice end, the joint
Fixing pipe is used to the fibre-optical splice being fixed on a machine.
Further, the joint fixing pipe is provided with buckle, and the joint fixing pipe is connected in optical fiber by buckle and connect
Head, it is described be buckled in rotate to an angle after depart from joint Fixed latches.
Compared with prior art, the beneficial effects of the present invention are：
Glue in patient's body tube chamber road caused by the OCT catheter interior pumpback devices of the present invention can effectively solve the problem that conduit pumpback
The frictionally damage of film, improve the comfortableness of patient's diagnosis.
Brief description of the drawings
Fig. 1 is the structure chart of the OCT catheter interior pumpback devices of embodiment one；
Fig. 2 is the structure chart of the OCT catheter interior pumpback devices of embodiment two.
Reference：1st, fibre-optical splice；2nd, optical fiber fixing pipe；3rd, fixing device；4th, the second sealing ring；5th, the first sealing
Circle；6th, second channel；7th, sebific duct；8th, cavity；9th, optical fiber；10th, pressure equilibrium air bag；11st, atmospheric pressure compensating block；12nd, first passage.
Embodiment
Below, with reference to accompanying drawing and embodiment, the present invention is described further, it is necessary to which explanation is, not
Under the premise of afoul, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
Embodiment one：
As shown in figure 1, a kind of OCT catheter interiors pumpback device is present embodiments provided, including optical fiber 9, sebific duct 7, optical fiber
Joint 1, fixing device 3, pressure equilibrium module, the first sealing ring 5, the second sealing ring 4 and joint fixing pipe, in the sebific duct 7
Be provided with cavity 8, one end of the optical fiber 9 is entered in the cavity 8 in entering glue pipe 7 through one end of sebific duct 7, the optical fiber 9 it is another
One end is provided with fibre-optical splice 1, and the fibre-optical splice 1 is used to connect with an electric rotating machine；The joint fixing pipe is arranged at light
Outside at fine joint 1, the joint fixing pipe is used to the fibre-optical splice 1 being fixed on a machine, and the fibre-optical splice 1 is
SC-APC fibre-optical splices；In the prior art, together with sebific duct 7 is integrally fixed at optical fiber 9, the pumpback of OCT conduits is being carried out
When be that optical fiber 9 is connected to sebific duct 7 and moved together so that friction is had between sebific duct 7 and body lumen road, so as to easily
Cause the frictionally damage of patient's body tube chamber road mucous membrane；And the situation of the invention by the way that optical fiber 9 is separated with sebific duct 7 so that
Be not in the friction between body lumen road during the pumpback of optical fiber 9 so that or during diagnosis more
Comfortably；
First passage 12 is provided with the fixing device 3, the optical fiber 9 passes through the first passage 12, the fixed dress
3 are put to be arranged between fibre-optical splice 1 and sebific duct 7；The optical fiber fixing pipe 2 is arranged in first passage 12, and the optical fiber is fixed
Pipe 2 is fixed with optical fiber 9,；Second channel 6, the second channel 6 and the phase of first passage 12 are additionally provided with the fixing device 3
Connection, and is provided with pressure equilibrium module in the second channel 6, the pressure equilibrium module be used to maintaining first passage 12 with
Pressure in second channel 6 is constant；The pressure equilibrium module is atmospheric pressure compensating block 11, the first passage 12 and second channel
Index-matching fluid is provided with 6, first sealing ring 5 is arranged at pressure equilibrium module, and first sealing ring 5 is used for
Prevent index-matching fluid from being spilt out through pressure equilibrium module so as to cause first passage 12 to be let out with the pressure in second channel 6
Leakage, second sealing ring 4 are arranged at first passage 12, and second sealing ring 4 is used to prevent index-matching fluid from overflowing；
First sealing ring 5 is that either square ring or built-up coil, second sealing ring 4 are O-ring or square ring to O-ring
Or built-up coil.
Medical catheter (that is to say optical fiber 9) is passed from OCT catheter interior pumpback devices axis, and medical catheter is led in OCT
Part inside pipe in pumpback device, is wrapped up by optical fiber fixing pipe 2, can realize that entirety is rotated coaxially and translated back and forth, optical fiber
Fixing pipe 2 is fixed on SC-APC joints.SC-APC joints are connected with the outer fixing pipe of joint by Fixed latches in two pin joints
Composition is overall, and the feed screw nut on screw mandrel stepper motor and the SC-APC connector ends of pumpback parts group are connected.
When OCT catheter interior pumpbacks device is in original state, the buckle on the outer fixing pipe top of joint is stuck in pin joints
On outer Fixed latches, it is impossible to realize the twitch back and forth of pumpback parts group；When in running order, medical worker starts screw mandrel stepping
Motor simultaneously drives pumpback parts group to rotate coaxially, and after fixing pipe is compared with original state rotated ninety degrees angle outside joint, buckle departs from
The outer Fixed latches of pin joints, medical worker can manipulate the movement of screw mandrel step motor control pumpback parts group, realize certain depth
The OCT image of scope.
Machine oil (that is to say index-matching fluid) is marked with inside pressure equilibrium device, wherein the first sealing ring 5 and second is close
Seal 4 serves the effect for stopping that machine oil enters pumpback parts group.In running order, screw mandrel stepper motor drives pumpback part
During group pumpback, the atmospheric pressure compensating block 11 inside pressure equilibrium device outwards translates, after promoting machine oil to fill up the translation of pumpback parts group
Pressure inside and outside the vacuum gap bascule brought, when screw mandrel stepper motor drives the push of pumpback parts group, pressure equilibrium device
Inwardly translation, this pressure equilibrium structure ensures that optical fiber fixing pipe 2 and optical fiber 9 can be translated smoothly, by setting air pressure to mend
Block 11 is repaid so that reaching pressure equilibrium inside it so that very big resistance can't be produced during optical fiber pumpback.
Embodiment two：
Pressure equilibrium module using atmospheric pressure compensating block 11, put down by the pressure used in the present embodiment in embodiment one
Weigh air bag 10；It is the same that it, which acts on purpose, is provided to balance the pressure in the device, but one kind is to pass through atmospheric pressure compensating
The mode that block 11 moves, one kind are to expand the problem of reducing by pressure equilibrium air bag 10, can be according to specific actual situation
To be analyzed it to determine which kind of pressure equilibrium mode is that situation use.
Above-mentioned embodiment is only the preferred embodiment of the present invention, it is impossible to the scope of protection of the invention is limited with this,
The change and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed scope.
Claims (10)
1. a kind of OCT catheter interiors pumpback device, it is characterised in that including optical fiber, sebific duct and fibre-optical splice, set in the sebific duct
Cavity is equipped with, one end of the optical fiber is entered in the cavity in entering glue pipe through one end of sebific duct, and the other end of the optical fiber is set
There is fibre-optical splice, the fibre-optical splice is used to connect with an electric rotating machine.
2. OCT catheter interiors pumpback device as claimed in claim 1, it is characterised in that also including fixing device, the fixation
First passage is provided with device, the optical fiber passes through the first passage, and the fixing device is arranged at fibre-optical splice and sebific duct
Between.
3. OCT catheter interiors pumpback device as claimed in claim 2, it is characterised in that also including optical fiber fixing pipe, the light
Fine fixing pipe is arranged in first passage, and the optical fiber fixing pipe is fixed with optical fiber.
4. OCT catheter interiors pumpback device as claimed in claim 2, it is characterised in that be additionally provided with the fixing device
Second channel, the second channel are connected with first passage, and pressure equilibrium module is provided with the second channel, the pressure
Strong balance module is used to maintain first passage and the pressure in second channel constant.
5. OCT catheter interiors pumpback device as claimed in claim 4, it is characterised in that the pressure equilibrium module is air pressure
Compensation block or pressure equilibrium air bag.
6. the OCT catheter interior pumpback devices as described in claim 4 or 5, it is characterised in that the first passage and second leads to
Index-matching fluid is provided with road.
7. the OCT catheter interior pumpback devices as described in claim 4 or 5, it is characterised in that also including the first sealing ring and
Two sealing rings, first sealing ring are arranged at pressure equilibrium module, and first sealing ring is used to prevent index matching
Hydrorrhea goes out, and second sealing ring is arranged at first passage, and second sealing ring is used to prevent index-matching fluid from overflowing.
8. OCT catheter interiors pumpback device as claimed in claim 7, it is characterised in that first sealing ring be O-ring or
Person's square ring or built-up coil, second sealing ring are O-ring either square ring or built-up coil.
9. OCT catheter interiors pumpback device as claimed in claim 1, it is characterised in that described to connect also including joint fixing pipe
Head fixing pipe is arranged at fibre-optical splice, and the joint fixing pipe is used to the fibre-optical splice being fixed on a machine.
10. OCT catheter interiors pumpback device as claimed in claim 9, it is characterised in that the joint fixing pipe is provided with card
Button, the joint fixing pipe are connected in fibre-optical splice by buckle, it is described be buckled in rotate to an angle after depart from joint and fix
Latch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710744900.0A CN107550443A (en) | 2017-08-25 | 2017-08-25 | A kind of OCT catheter interiors pumpback device |
| PCT/CN2017/099585 WO2019037144A1 (en) | 2017-08-25 | 2017-08-30 | Internal withdrawal device for oct catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710744900.0A CN107550443A (en) | 2017-08-25 | 2017-08-25 | A kind of OCT catheter interiors pumpback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107550443A true CN107550443A (en) | 2018-01-09 |
Family
ID=60977000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710744900.0A Pending CN107550443A (en) | 2017-08-25 | 2017-08-25 | A kind of OCT catheter interiors pumpback device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107550443A (en) |
| WO (1) | WO2019037144A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151118A (en) * | 2018-03-01 | 2019-08-23 | 中国人民解放军第四军医大学 | A kind of gastroscope device facilitating comprehensive detection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394799A (en) * | 2002-07-22 | 2003-02-05 | 王永民 | Air pollution resisting liquor bottle with previously built-in air bag |
| RU2204118C2 (en) * | 2001-05-16 | 2003-05-10 | Федеральное государственное унитарное предприятие "Государственное машиностроительное конструкторское бюро "Радуга" | Process testing tightness of articles |
| CN102135221A (en) * | 2011-03-31 | 2011-07-27 | 东北大学 | Pipeline detection robot based on probe detection |
| CN106137118A (en) * | 2016-08-26 | 2016-11-23 | 深圳市斯尔顿科技有限公司 | Control lamp motion and expand device and the ophthalmology OCT system of areas imaging |
| CN208447539U (en) * | 2017-08-25 | 2019-02-01 | 广州永士达医疗科技有限责任公司 | A kind of OCT catheter interior pumpback device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080097224A1 (en) * | 2006-10-20 | 2008-04-24 | Infraredx, Inc. | Manual and Motor Driven Optical Pullback and Rotation System and Method |
| WO2014077880A1 (en) * | 2012-11-16 | 2014-05-22 | Lightlab Imaging, Inc. | Automated fluid delivery catheter and system |
| CN105283126A (en) * | 2013-03-14 | 2016-01-27 | 火山公司 | System for guiding workflow during a medical imaging procedure |
| BR102014014089A2 (en) * | 2014-06-10 | 2016-01-05 | Jorg Zimmermann | coil winding system |
| CN106419853B (en) * | 2016-11-30 | 2018-03-30 | 苏州阿格斯医疗技术有限公司 | Closed loop OCT conduit automatic returning methods and its device |
-
2017
- 2017-08-25 CN CN201710744900.0A patent/CN107550443A/en active Pending
- 2017-08-30 WO PCT/CN2017/099585 patent/WO2019037144A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2204118C2 (en) * | 2001-05-16 | 2003-05-10 | Федеральное государственное унитарное предприятие "Государственное машиностроительное конструкторское бюро "Радуга" | Process testing tightness of articles |
| CN1394799A (en) * | 2002-07-22 | 2003-02-05 | 王永民 | Air pollution resisting liquor bottle with previously built-in air bag |
| CN102135221A (en) * | 2011-03-31 | 2011-07-27 | 东北大学 | Pipeline detection robot based on probe detection |
| CN106137118A (en) * | 2016-08-26 | 2016-11-23 | 深圳市斯尔顿科技有限公司 | Control lamp motion and expand device and the ophthalmology OCT system of areas imaging |
| CN208447539U (en) * | 2017-08-25 | 2019-02-01 | 广州永士达医疗科技有限责任公司 | A kind of OCT catheter interior pumpback device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151118A (en) * | 2018-03-01 | 2019-08-23 | 中国人民解放军第四军医大学 | A kind of gastroscope device facilitating comprehensive detection |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019037144A1 (en) | 2019-02-28 |
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