CN108969095A - For treating the laser ablation system and method for CTO lesion - Google Patents
For treating the laser ablation system and method for CTO lesion Download PDFInfo
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- 239000000523 sample Substances 0.000 claims abstract description 31
- 238000003384 imaging method Methods 0.000 claims abstract description 22
- 238000013153 catheter ablation Methods 0.000 claims abstract description 4
- 238000004873 anchoring Methods 0.000 claims description 32
- 210000004204 blood vessel Anatomy 0.000 claims description 23
- 239000013307 optical fiber Substances 0.000 claims description 19
- 239000000835 fiber Substances 0.000 claims description 15
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- 210000004369 blood Anatomy 0.000 claims description 7
- 239000008280 blood Substances 0.000 claims description 7
- 238000002679 ablation Methods 0.000 claims description 3
- 239000002872 contrast media Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
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- 239000000155 melt Substances 0.000 claims description 2
- 238000004080 punching Methods 0.000 abstract description 3
- 238000002560 therapeutic procedure Methods 0.000 description 12
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- 230000001684 chronic effect Effects 0.000 description 4
- 210000004351 coronary vessel Anatomy 0.000 description 4
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- KKJUPNGICOCCDW-UHFFFAOYSA-N 7-N,N-Dimethylamino-1,2,3,4,5-pentathiocyclooctane Chemical compound CN(C)C1CSSSSSC1 KKJUPNGICOCCDW-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B18/24—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
- A61B18/245—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter for removing obstructions in blood vessels or calculi
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/36—Image-producing devices or illumination devices not otherwise provided for
- A61B90/37—Surgical systems with images on a monitor during operation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
- A61B2018/00386—Coronary vessels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/36—Image-producing devices or illumination devices not otherwise provided for
- A61B90/37—Surgical systems with images on a monitor during operation
- A61B2090/373—Surgical systems with images on a monitor during operation using light, e.g. by using optical scanners
- A61B2090/3735—Optical coherence tomography [OCT]
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Abstract
The invention discloses a kind of for treating the laser ablation system of CTO lesion, including the guiding catheter for guiding to imaging catheter and laser ablation seal wire, the imaging catheter for carrying out image scanning to diseased region, the laser generator for carrying out laser ablation to diseased region and laser ablation seal wire and for the foley's tube of fixed laser ablation seal wire, wherein laser ablation seal wire includes fibre-optical probe and pressure sensor.The invention also discloses a kind of methods of application laser ablation system treatment CTO lesion, CTO imaging is carried out by imaging catheter and pressure sensor instructs the accurate positionin of foley's tube, along with control fibre-optical probe issues laser, a channel can be got by repeatedly punching in the harder region of CTO diseased region, it penetrates seal wire easily and passes through diseased region, operating difficulty and operating time are substantially reduced, success rate of operation is improved.
Description
Technical field
The present invention relates to medical fields, and in particular to a kind of for treating the laser ablation system and method for CTO lesion.
Background technique
(Chronic total occlusion refers to occluded blood vessel section forward blood flow to chronic total occlusion of coronary artery CTO
0 grade of TIMI, while its off-period is greater than or equal to trimestral lesion) account for about the 1/5 of whole coronary angiography detection lesions,
Compared with non-blocking lesion, the success rate of operation of CTO lesion interventional therapy is low, complication, restenosis and occludes incidence height again.
Although continuing to bring out new instrument and new technology, CTO success rate of operation is greatly improved, CTO lesion be still considered as be
The maximum challenge of PCI therapy field at present.In recent years, the patient that China received PCI is continuously increased, and is engaged in calcification score and controls
Doctor's quantity for the treatment of is also in rapid increase trend, but interventional therapy level is irregular between each department, and especially CTO treats water
It is flat to have very big difference, it would be highly desirable to standardize.Chronic total occlusion interventional therapy operation success rate how is improved, reduces operation simultaneously
The incidence of hair disease, which is that mesh is previous, does not allow the problem of avoiding.
With the raising of patient's technology and the continuous accumulation of experience and the application of some novel guide wires and instrument,
The success rate of operation of Occlusion interventional therapy has large increase, but its success rate is still below 80%.Occlusion intervention is controlled
Treat the main the reason is that guide wire can not be by lesion, although patient can use parallel guidance steel wire skill of operative failure
Art, see-saw technology, or interventional therapy is carried out under IVUS guidance, but still some lesion can not be by traditional
Interventional therapy method completes operation, and forward direction interventional therapy Occlusion seems to enter bottleneck stage.
In recent years, both at home and abroad some Cardiac interventional experts to some forward direction guide wires can not by patient, if its
Target vessel has preferable collatoral vessel to supply, and attempts using guide wire technology of driving in the wrong direction at back through Occlusion, drives in the wrong direction and lead
Drawing steel wire can be with: 1. reversely forming microchannel, enters occlusion distal vessels to guide wire before being conducive to；2. to guiding as before
The marker or interventional therapy is directly reversed by the guide wire that drives in the wrong direction that steel wire advances.The technology further improves occlusion
The success rate of lesion interventional therapy.
In order to can be further improved the success rate of operation of Occlusion, many doctors and manufacturer are continually striving to, carve and
Attempt various new instruments with not giving up.However in these instruments, have it is some rest on the experimental stage always, reason or due to it
Curative effect is not significantly increased, or leads with compared with high concurrent disease incidence, such as Magnum/Magnarail system, Kensey
Pipe, ROTACS low speed orient atherectomy catheter and excimer laser guide wire etc..And common device in Occlusion operation now
Tool system is as follows:
1, OCR Safe-Cross RF system
Advance side of the Safe-Cross RF system using optical coherence reflection technology control guide wire in Occlusion
To.The guide wire is 0.014 " medium hardness guide wire, and head end can issue RF energy, be formed in Occlusion
Channel is conducive to passing through for other intervention therapeutic apparatus.The seal wire head end can emit near infrared ray simultaneously, when the head of guide wire
When end is got too close to vascular wall (< 1mm), the monitor of system is displayed in red band, and gives a warning, at this time guide wire head
End RF energy will not discharge, and patient readjusts the trend of guide wire, if in the right direction, display shows green bar
Band.Success rate of operation of the system in refractory Chronic coronary artery occlusion is 50%-60%, coronary artery perforation incidence < 1%.
2, FrontRunner system
FrontRunner conduit has blunt separation Occlusion to form forward path, so that intervention therapeutic apparatus
Pass through the lesion.Its success rate for passing through Occlusion of X-39FrontRunner used at present is 50%-61.7%, perforation
Incidence is 0.9%-1.9%.FrontRunner is lower in the success rate of tortuous right hat, but for being closed in intractable bracket
Plug property restenosis has preferable clinical efficacy.
3, Crosser system
Crosser system is high frequency machinery exchange device again, by motor, sensor and energy converter, Crosser conduit group
At motor generates high-frequency current, generates high-frequency vibratory energy (20kHz) by energy converter, is allowed to constantly vibrate Occlusion
Place.Early Europe and the U.S. carry out registration studies and show that the success rate of operation of Crosser system is 63%, no perforation complication hair
It is raw.It is selected that perspective Cross As First Therapy (CRAFT) research is carried out at two centers in Milan and Rotterdam recently
80 patients, should research shows that the success rate of Crosser treatment CTO lesion is 75%, in hospital between heart serious adverse events
Incidence is 6.3%, wherein 5% is the myocardial infarction of Non-ST Elevation Acute, 1.3% (1/80) is coronary artery perforation.But the example is suffered from
The perforation of person's coronary artery may be unrelated with Crosser, because operating Crosser in art vascular puncture occurs, researcher speculates this blood
Pipe perforation may be related with guide wire.
4, CrossPoint system
CrossPoint system can be by being located at catheter tail hand by the IVUS probe and Nitinol needle for being located at distal end
The manipulation part of handle, which is recycled or adjusted, punctures direction.When guide wire, which enters false chamber, to be continued through, can be selected should
System guides the direction of adjustment puncture needle by IVUS thereon, so that it is directed toward true chamber and punctures to true chamber, through the Nitinol
Needle is put into guide wire to the occlusion true chamber of section distal vessels, subsequently into interventional therapy.There is scholar to attempt to use recently
CrossPoint system selects coronary venous as bypass channel, treats the Occlusion of traditional interventional technique treatment failure, i.e.,
Percutaneous original position coronary bypass surgery.
5, CrossBoss&Stingray system
CrossBoss conduit has round end distal tip (diameter 1mm), and being installed to flexibility can reverse in proximal stem.
For Crossboss catheter packaging with having dedicated torquer, the torquer is fixed at its proximal end.The distal end of conduit is covered with parent
Water coating.The dedicated microtubular that penetrates of CrossBoss CTO is suitble to be used cooperatively with seal wire to enter coronary artery and peripheral blood vessel
The discrete locations of system.As penetrating that microtubular, Stingray CTO are dedicated to reentry true chamber ball comprising CrossBoss CTO is dedicated
CrossBoss conduit is suitable for when the component part use of capsule dilating catheter and the dedicated system for penetrating seal wire of Stingray CTO
Before PTCA or bracket intervention operation, it is (including slow that conventional guidewire is placed by stenosed coronary arteries lesion by intracavitary
Property is entirely shut CTO) distal side.CrossBoss conduit makes seal wire under true chamber or inner membrance safely and fast by lesion, Fast-
Spin torque rotates CrossBoss conduit quickly to come through lesion, multiply draw-off godet around shaft 1:1 torque be provided pass
It leads, noninvasive circular head end reduces perforation risk；Stingray system (foley's tube and seal wire) can be precisely fixed under inner membrance
Position, and seal wire is made to return to true chamber under inner membrance, the both wings of oblate spheroid capsule encircle blood vessel automatically under inner membrance, and there are two sides for band on sacculus
To opposite guide wire exit openings, one of outlet is towards true chamber, and seal wire can selectively reentry true chamber, pre- moulding
The dedicated seal wire of Stingray, head end has a probe, and to reentry true chamber, there are two lighttight label bands for essence thereon
Determine position.
For above-mentioned five systems in the modern operation for being often used progress Occlusion, their common ground is worn using seal wire
Saturating lesion region realizes the conducting again of blood vessel, they have the disadvantages that first, and operating difficulty is big and operating time is longer；
Second, operation pathway is without unified standard；Third, different patient's success rate of operation are different；4th, operation spends high；5th, seal wire
It is easily accessible false chamber, patient is damaged larger.
Summary of the invention
In order to overcome problems of the prior art, the object of the present invention is to provide one kind being used for completely newly to treat CTO
The laser ablation system of lesion, and the method for application laser ablation system treatment CTO lesion.
The technical scheme adopted by the invention is that:
For treating the laser ablation system of CTO lesion, comprising:
Hollow guiding catheter, for being guided to imaging catheter and laser ablation seal wire；
Imaging catheter, for carrying out image scanning to diseased region；
Laser generator and laser ablation seal wire are used to carry out laser ablation to diseased region, wherein laser ablation seal wire packet
Include fibre-optical probe and pressure sensor；
Foley's tube, the foley's tube are set in outside laser ablation seal wire, and foley's tube front end is provided with inflatable
Anchoring balloon, anchoring balloon expansion after laser ablation seal wire is positioned.
As a further improvement of the above technical scheme, the fibre-optical probe goes out light by single mode optical fiber and positioned at single mode optical fiber
The self-focusing optical fiber at end forms, and the light output end of self-focusing optical fiber is ground to sphere, so that the side of the outgoing beam of fibre-optical probe
To coaxial with blood vessel, be conducive to the focusing of laser energy, can be used for getting through the harder region in proximal end of CTO lesion.
As a further improvement of the above technical scheme, the pressure sensor is fibre optical sensor, the Fibre Optical Sensor
Device and fibre-optical probe are arranged side by side.
Further, the fibre optical sensor is preferably fiber bragg grating.
As a further improvement of the above technical scheme, the pressure sensor is piezoelectric film sensor, the optical fiber
Probe external symmetry is provided with multiple piezoelectric film sensors.Preferably, it there are four the piezoelectric film sensor settings, sets respectively
Set the four direction up and down in fibre-optical probe.
The present invention also provides a kind of methods using above-mentioned laser ablation system treatment CTO lesion, comprising the following steps:
S1, before entering diseased region along the guiding catheter placed using imaging catheter, during which constantly to blood vessel into
Row image scanning accurately knows the fineness of blood vessel and the accurate position of diseased region by OCT image；
S2, extraction imaging catheter, laser ablation seal wire is inserted into along guiding catheter, then suitable before arriving at CTO diseased region
Laser ablation seal wire foley's tube is delivered CTO diseased region proximal end；
S3, by guiding catheter to contrast agent is injected between blood vessel and anchoring balloon, empty diseased region and anchoring balloon it
Between blood；
S4, the relative position that fibre-optical probe and diseased region are judged according to the pressure information of pressure sensor Real-time Feedback, together
When adjust the position of anchoring balloon, determine and fill gas/liquid to anchoring balloon behind position, fix anchoring balloon expansion, guarantee laser
Fibre-optical probe and the blood vessel for melting seal wire are coaxial；
S5, the feedback by pressure sensor control the laser of laser generator and export along fibre-optical probe, to diseased region into
Row laser ablation；
S6, stop laser generator, push laser ablation seal wire forward, and according to the feedback of pressure sensor, judgement is
It is no to need to continue laser boring, it such as needs to continue laser boring, then repeatedly step S5 and S6, until reaching goal treatment effect
Fruit.
In the method for above-mentioned treatment CTO lesion, step S2 can judge the anchoring that should be used according to the OCT image of imaging catheter
The position that the model and anchoring balloon of sacculus should place.
In the method for above-mentioned treatment CTO lesion, preferably filling physiological saline to anchoring balloon behind determining position in step S4 makes
Anchoring balloon expansion.
The beneficial effects of the present invention are:
The method of laser ablation system provided by the invention and application laser ablation system treatment CTO lesion, passes through
Imaging catheter carries out OCT image and pressure sensor instructs the accurate positionin of foley's tube, along with control fibre-optical probe issues
Laser, a channel can be got by repeatedly punching in the harder region of CTO diseased region, penetrated seal wire easily and passed through lesion
Area.It is had the advantage that using this system and treatment method
1, seal wire penetrates that diseased region is fairly simple, reduces the probability that seal wire enters false chamber and branch vessel；
2, directly disclosed using hardhead seal wire compared to the prior art and find gap in diseased region, using system of the invention and
Treatment method can substantially reduce operating difficulty and operating time, while also reduce the injury to human body；
3, the success rate for opening CTO lesion is improved；
4, the energy-controllable of laser, and under the different state of an illness, the depth and number of laser boring can be passed according to pressure
Sensor is adjusted flexibly, and is conducive to improve success rate of operation.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the schematic cross-section of one of laser ablation seal wire.
Fig. 2 is the side sectional view of the laser ablation seal wire of Fig. 1.
Fig. 3 is the structural schematic diagram that seal wire is melted by anchoring balloon fixed laser.
Specific embodiment
It is controlled with reference to the accompanying drawing with preferred embodiment to laser ablation system of the invention and using the laser ablation system
The method for treating CTO lesion is described in further detail.
Laser ablation system provided by the invention includes that guiding catheter, imaging catheter, laser generator and laser ablation are led
Silk 1 and foley's tube 7.The guiding catheter puts the intravascular of human body into, for imaging catheter and laser ablation seal wire 1
It guides.The imaging catheter is entered in human body by guiding catheter, it is preferred that and the imaging catheter is OCT image conduit,
Blood vessel is imaged using intracavitary image system, determines the position of diseased region and the thickness of blood vessel, can be selected according to blood vessel thickness
The position that laser ablation seal wire 1 enters is determined with the foley's tube of different size, and according to the position of diseased region.The laser hair
Raw device is controlled by computer issues laser, and laser aiming to diseased region is utilized laser ablation lesion by the laser ablation seal wire 1
Area.The foley's tube 7 is set in outside laser ablation seal wire 1, and 7 front end of foley's tube is provided with expandable anchoring balloon 8,
Anchoring balloon 8 expand after laser ablation seal wire 1 is positioned, as shown in figure 3, the effect of foley's tube 7 here it is obvious that
Exactly for fixing position, to guarantee that laser ablation seal wire 1 and blood vessel 9 are coaxial, that is, guarantee in use laser to lesion region 10
When ablation, laser emitting will not be made to deflect, blood vessel 9 is caused to damage；It is special that there are one structures here simultaneously
Point, the laser ablation seal wire 1 of chamber still can pass through the biography of rear mechanical device to anchoring balloon 8 among it after inflation is fixed
It is dynamic, so that laser ablation seal wire 1 is pushed ahead.
Referring to Fig.1, Fig. 2, the laser ablation seal wire 1 include fibre-optical probe 2 and pressure sensor 3 and clad optical fiber
The protective layer 4 of probe 2 and pressure sensor 3.The fibre-optical probe 2 goes out oneself of light end by single mode optical fiber 5 and positioned at single mode optical fiber 5
Focusing optical fiber 6 forms, and the light output end of self-focusing optical fiber 6 is ground to sphere so that the direction of the outgoing beam of fibre-optical probe 2 with
Blood vessel is coaxial, is conducive to the focusing of laser energy.The pressure sensor 3 is preferably the optical fiber being arranged side by side with fibre-optical probe 2
Bragg grating: fiber Bragg grating sensor is frequency of use highest, the most wide fibre optical sensor of application range, can be with
Change the wavelength of the light wave of its reflection according to the variation of environment or strain.When the light beam of a branch of spectrum is transmitted to optical fiber cloth
When glug grating, every short section of optical fiber after optical index is altered to just can only reflect the light wave of specific wavelength a kind of,
This wavelength becomes bragg wavelength, and equation is as follows:
λb=2n Λ.
Fiber bragg grating and fibre-optical probe 2 are connected in parallel and form laser ablation seal wire 1 by this patent, and and blood vessel
Coaxially, the effect of fiber bragg grating is directly against lesion position mainly when laser ablation seal wire 1 arrives at lesion region
It sets, by the value of the real-time returning pressure of fibre optical sensor, for judging distal end and the phase of diseased region of exploring laser light ablation seal wire 1
To positional relationship.Detailed process is, when laser ablation seal wire 1 withstands on diseased region proximal end, fiber bragg grating is by axial direction
Stress can then generate corresponding variation, then by demodulating equipment, intuitively reflect the size of institute's stress, doctor is according to power
Size change situation, judge the relative positional relationship of laser ablation seal wire 1 and diseased region, when reaching target position, pass through
Computer program control laser generator launches laser, melts to lesion region.
Further, the pressure sensor can also use piezoelectric film sensor, it is preferred that the piezoelectric membrane sensing
There are four device is settable, it is separately positioned on the four direction up and down of fibre-optical probe, effect and fiber bragg grating phase
It together, is all that the fixation position of anchoring balloon and the release of laser energy are then determined according to the feedback of pressure for testing pressure.
The present invention also provides a kind of methods using above-mentioned laser ablation system treatment CTO lesion, comprising the following steps:
S1, before entering diseased region along the guiding catheter placed using imaging catheter first, during which constantly to blood
Pipe carries out image scanning, and the fineness of blood vessel and the accurate position of diseased region are accurately known by OCT image；
The position that S2, the model for the anchoring balloon that should be used according to OCT image judgement and anchoring balloon should be placed；Extraction
Laser ablation seal wire is inserted by imaging catheter along guiding catheter, before arriving at CTO diseased region, then along laser ablation seal wire
Selected foley's tube is delivered CTO diseased region proximal end；
S3, by guiding catheter to contrast agent is injected between blood vessel and anchoring balloon, empty diseased region and anchoring balloon it
Between blood the main reason for (exclude blood be that laser can not penetrate blood)；
S4, the relative position that fibre-optical probe and diseased region are judged according to the pressure information of pressure sensor Real-time Feedback, together
When adjust the position of anchoring balloon, determine and fill physiological saline or other liquid to anchoring balloon behind position, expand anchoring balloon
And fit closely and fix with vascular wall, guarantee that the fibre-optical probe of laser ablation seal wire and blood vessel are coaxial, guarantees to melt in release
It will not be trained off after laser, blood vessel is caused to damage, avoid the generation for causing vascular puncture because training off；
S5, the feedback by pressure sensor, the laser by computer program control laser generator are defeated along fibre-optical probe
Out, laser ablation is carried out to diseased region and a small hole is got into front in the harder region in CTO lesion proximal end；
S6, stop laser generator, push laser ablation seal wire forward, and according to the feedback of pressure sensor, judgement is
It is no to need to continue laser boring, it such as needs to continue laser boring, then repeatedly step S5 and S6, until reaching goal treatment effect
Fruit.
The method of laser ablation system provided by the invention and application laser ablation system treatment CTO lesion, passes through
Imaging catheter carries out OCT image and pressure sensor instructs the accurate positionin of foley's tube, along with control fibre-optical probe issues
Laser, a channel can be got by repeatedly punching in the harder region of CTO diseased region, penetrated seal wire easily and passed through lesion
Area.It is had the advantage that using this system and treatment method
1, seal wire penetrates that diseased region is fairly simple, reduces the probability that seal wire enters false chamber and branch vessel；
2, directly disclosed using hardhead seal wire compared to the prior art and find gap in diseased region, using system of the invention and
Treatment method can substantially reduce operating difficulty and operating time, while also reduce the injury to human body；
3, the success rate for opening CTO lesion is improved；
4, the energy-controllable of laser, and under the different state of an illness, the depth and number of laser boring can be passed according to pressure
Sensor is adjusted flexibly, and is conducive to improve success rate of operation.
The above is only preferred embodiments of the invention, as long as realizing the technical side of the object of the invention with essentially identical means
Case belongs within protection scope of the present invention.
Claims (8)
1. the laser ablation system for treating CTO lesion characterized by comprising
Hollow guiding catheter, for being guided to imaging catheter and laser ablation seal wire；
Imaging catheter, for carrying out image scanning to diseased region；
Laser generator and laser ablation seal wire, for carrying out laser ablation to diseased region, wherein laser ablation seal wire includes light
Fibre probe and pressure sensor；
Foley's tube, the foley's tube are set in outside laser ablation seal wire, and foley's tube front end is provided with expandable anchor
Determine sacculus, laser ablation seal wire is positioned after anchoring balloon expansion.
2. according to claim 1 for treating the laser ablation system of CTO lesion, which is characterized in that the optical fiber is visited
Head is formed by single mode optical fiber and positioned at the self-focusing optical fiber that single mode optical fiber goes out light end, and the light output end of self-focusing optical fiber is ground to ball
Body.
3. according to claim 1 or 2 for treating the laser ablation system of CTO lesion, which is characterized in that the pressure
Sensor is fibre optical sensor, and the fibre optical sensor and fibre-optical probe are arranged side by side.
4. according to claim 3 for treating the laser ablation system of CTO lesion, which is characterized in that the optical fiber passes
Sensor is fiber bragg grating.
5. according to claim 1 or 2 for treating the laser ablation system of CTO lesion, which is characterized in that the pressure
Sensor is piezoelectric film sensor, and the fibre-optical probe external symmetry is provided with multiple piezoelectric film sensors.
6. using the method for any laser ablation system treatment CTO lesion of claim 1-5, which is characterized in that including
Following steps:
S1, before entering diseased region along the guiding catheter placed using imaging catheter, during which constantly to blood vessel carry out at
As scanning, the fineness of blood vessel and the accurate position of diseased region are accurately known by OCT image；
S2, extraction imaging catheter, laser ablation seal wire is inserted into along guiding catheter, before arriving at CTO diseased region, then along sharp
Light melts seal wire and foley's tube is delivered CTO diseased region proximal end；
S3, by guiding catheter to contrast agent is injected between blood vessel and anchoring balloon, empty between diseased region and anchoring balloon
Blood；
S4, the relative position that fibre-optical probe and diseased region are judged according to the pressure information of pressure sensor Real-time Feedback, are adjusted simultaneously
The position of whole anchoring balloon determines and fills gas/liquid to anchoring balloon behind position, fixes anchoring balloon expansion, guarantees laser ablation
The fibre-optical probe and blood vessel of seal wire are coaxial；
S5, the feedback by pressure sensor, the laser for controlling laser generator export along fibre-optical probe, swash to diseased region
Light ablation；
S6, stop laser generator, push laser ablation seal wire forward, and according to the feedback of pressure sensor, judge whether to need
Continue laser boring, such as need to continue laser boring, then repeatedly step S5 and S6, until reaching objective response.
7. the method for the treatment of CTO lesion according to claim 6, which is characterized in that in above-mentioned steps S2, sentenced according to imaging
The position that the model and anchoring balloon of the disconnected anchoring balloon that should be used should place.
8. the method for the treatment of CTO lesion according to claim 6, which is characterized in that in above-mentioned steps S4, after determining position
Physiological saline is filled to anchoring balloon.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105848A1 (en) * | 2020-11-20 | 2022-05-27 | 毕勇 | Laser thermoplasty treatment device for bronchial asthma |
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| CN108969095B (en) | 2023-12-12 |
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