CN114469337A - Ablation catheter assembly, laser ablation system and method - Google Patents
Ablation catheter assembly, laser ablation system and method Download PDFInfo
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- 238000000608 laser ablation Methods 0.000 title claims abstract description 31
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- 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
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- A—HUMAN NECESSITIES
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- 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
- A61B2018/00404—Blood vessels other than those in or around the heart
- A61B2018/0041—Removal of thrombosis
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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
- A61B2018/2205—Characteristics of fibres
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Abstract
The application is applicable to the technical field of medical instruments, and provides an ablation catheter assembly, a laser ablation system and a laser ablation method, wherein the ablation catheter assembly comprises a connector, a protection tube, an ablation optical fiber and a spliced optical fiber, and the spliced optical fiber is used for collecting absorption attenuation light from plaques; one end of the protection tube, the ablation optical fiber and the splicing optical fiber are arranged in the protection tube; one end of the ablation optical fiber and one end of the splicing optical fiber are connected with the connector. The embodiment of the application can improve ablation efficiency.
Description
Technical Field
The application belongs to the technical field of medical instruments, and particularly relates to an ablation catheter assembly, a laser ablation system and a laser ablation method.
Background
The current laser ablation system comprises a laser, a coupling module and an ablation catheter assembly, wherein the laser is connected with the coupling module, and the coupling module is connected with the ablation catheter assembly. An array of ablation catheter assemblies has circumferentially arranged optical fibers to which lasers apply laser light of a specified energy to ablate plaque in a vessel.
Because different plaques require different energy of the laser, for the current laser ablation system, the minimum energy is required to try to see whether the current plaque can be ablated; if not, increasing the energy emitted by the laser and continuing the trial until the energy emitted by the laser can obviously ablate the plaque; this reduces ablation efficiency.
Disclosure of Invention
Embodiments of the present application provide an ablation catheter assembly, a laser ablation system and a method, which can improve ablation efficiency.
In a first aspect, embodiments of the present application provide an ablation catheter assembly comprising a connector, a protection tube, an ablation optical fiber, and a splice optical fiber for collecting absorption-attenuated light from plaque;
the ablation optical fiber and the splicing optical fiber are arranged inside the protection tube;
one end of the protection tube, one end of the ablation optical fiber and one end of the splicing optical fiber are connected with the connector.
In a possible implementation manner of the first aspect, the protection tube includes a protection segment and a transition segment, and the transition segment is disposed between the protection segment and the connector.
In one possible implementation of the first aspect, the ablation catheter assembly further includes a visualization ring disposed at the other end of the protective tube.
In one possible implementation manner of the first aspect, the ablation catheter assembly further includes a guide wire, and a surface of the protective tube is provided with a guide wire port through which the guide wire penetrates into the interior of the protective tube.
In a possible implementation manner of the first aspect, the protection tube is provided with a first cavity and a second cavity, the ablation optical fiber is located in the first cavity, and the splicing optical fiber is located in the second cavity.
In a possible implementation manner of the first aspect, the spliced optical fiber includes multiple optical fibers, and the multiple optical fibers are sequentially connected along a length direction of the spliced optical fiber to form the spliced optical fiber.
In one possible implementation manner of the first aspect, the plurality of segments of optical fibers are single mode optical fibers, graded index optical fibers, and coreless optical fibers, respectively.
In a possible implementation of the first aspect, the ablation fiber has a diameter larger than a diameter of the splicing fiber such that a central axis of the ablation fiber is not coincident with a central axis of the protective tube.
In a second aspect, embodiments of the present application provide a laser ablation system comprising an ablation catheter assembly as described in any of the above.
In one possible implementation of the second aspect, the laser ablation system further comprises an ablation laser, a coupling module, and a feedback system;
the coupling module is disposed between the ablation catheter assembly and the ablation laser;
the feedback system is used for receiving optical signals from the splicing optical fiber so as to control the ablation laser.
In a third aspect, embodiments of the present application provide a method of laser ablation using the ablation catheter assembly of any of the above, the method comprising:
collecting absorption-attenuated light from plaque through the spliced optical fiber;
determining the type of the plaque according to the absorption attenuation light;
and determining the energy of the laser output to the ablation optical fiber according to the type of the plaque so as to ablate the plaque.
In a fourth aspect, embodiments of the present application provide a laser ablation device comprising:
a light collection module to: collecting absorptive attenuated light from the plaque through the spliced optical fiber.
A plaque type determination module to: determining the type of the plaque according to the absorption attenuation light.
An energy determination module to: and determining the energy of the laser output to the ablation optical fiber according to the type of the plaque so as to ablate the plaque.
In a fifth aspect, an embodiment of the present application provides a computing device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the method of any one of the above first aspects when executing the computer program.
In a sixth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program which, when executed by a processor, implements the method of any one of the above first aspects.
In a seventh aspect, embodiments of the present application provide a computer program product, which, when run on a terminal device, causes the terminal device to perform the method of any one of the above first aspects.
Compared with the prior art, the embodiment of the application has the beneficial effects that: .
The splicing optical fiber is used for collecting absorption attenuation light from the plaque to determine energy of laser transmitted by the ablation optical fiber, and the laser with the energy is output by the ablation optical fiber to ablate the plaque, so that the laser with proper energy can be output for a specified plaque to ablate the specified plaque at one time, and ablation efficiency can be improved.
Some possible implementations of embodiments of the present application have the following beneficial effects:
the transition section is connected between the connector and the protection section, and plays a role in transition between the connector and the protection section, so that the protection tube has certain flexibility, and is not easy to bend;
the position of the other end of the protective tube (or the tip of the catheter) in the blood vessel can be tracked in real time by using the developing ring, so that the operation is convenient;
the ablation catheter component is an eccentric ablation catheter component, the ablation optical fiber performs eccentric rotation motion on the protective tube, and the ablation optical fiber can rotate to different lesion positions in the blood vessel to perform laser ablation, so that the ablation area is increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a laser ablation system provided by an embodiment of the present application;
FIG. 2 is a schematic structural view of an ablation catheter assembly provided in accordance with an embodiment of the present application;
FIG. 3 is a cross-sectional view of an ablation optical fiber provided in accordance with an embodiment of the present application;
FIG. 4 is a cross-sectional view of an ablation catheter assembly provided in accordance with an embodiment of the present application;
fig. 5 is a schematic flow chart of a laser ablation method provided by an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a laser ablation device provided in accordance with an embodiment of the present application;
fig. 7 is a schematic structural diagram of a computing device according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to fig. 1 to 7 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Fig. 1 is a schematic structural diagram of a laser ablation system provided in an embodiment of the present application. The present embodiment provides a laser ablation system that includes an ablation catheter assembly 100, an ablation laser 200, a coupling module 300, and a feedback system 400.
The coupling module 300 is disposed between the ablation catheter assembly 100 and the ablation laser 200, and is configured to transmit light emitted by the ablation laser 200 to the ablation catheter assembly 100. The feedback system 400 is used to receive optical signals from the ablation catheter assembly 100 to control the ablation laser 200.
Fig. 2 is a schematic structural view of an ablation catheter assembly provided in accordance with an embodiment of the present application. The ablation catheter assembly 100 provided by the present embodiment includes a connector 1, a protective tube 2, an ablation optical fiber 3, and a splice optical fiber 4.
The connector 1 is used for optically coupling with the coupling module 300 to realize optical transmission. The connector 1 protects the optical fibers (the ablation optical fiber 3 and the splicing optical fiber 4) in the connector 1; in some embodiments, referring to fig. 2, the connector 1 includes a connector handle 11, a fiber metal fastener 12 and a metal press 13 located inside the connector 1. Different modes of the ablation laser 200 can be matched by designing different specifications of the connecting head 1.
The protective tube 2 is a tube with a cavity and is biocompatible. The protective tube 2 is primarily intended to protect the optical fibres inside, has sufficient stiffness to support pushing, while having a certain flexibility to be able to follow the vessels of the human body. One end 2A of the protection tube 2 is connected with the connector 1.
Fig. 3 is a cross-sectional view of an ablation optical fiber provided in an embodiment of the present application. The ablation optical fiber 3 is used for transmitting laser for ablation. In some embodiments, referring to fig. 3, the ablation fiber 3 is a large core fiber comprising a core 31, a cladding 32, and a coating 33, the cladding 32 surrounding the core 31, the coating 33 surrounding the cladding 32; the fiber core 31 is made of pure quartz, the cladding 32 is made of fluorine-doped quartz cladding, and the coating 33 is made of polyimide and high-temperature acrylate; the ablation fiber 3 is capable of transmitting ultraviolet laser light having a wavelength of 355nm and an energy of the order of hundred millijoules with extremely little loss.
The spliced optical fiber 4 is used to obtain an Index of Plaque Attenuation (IPA) of a blood vessel, and specifically, to acquire a signal of the blood vessel to calculate the plaque attenuation Index (IPA). In some embodiments, referring to fig. 2, the splicing optical fiber 4 includes a plurality of segments of optical fibers, specifically three segments of optical fibers, which are a single mode optical fiber, a coreless optical fiber and a graded-index optical fiber, and the single mode optical fiber, the graded-index optical fiber and the coreless optical fiber are connected in sequence along a length direction X of the splicing optical fiber 4 to form the splicing optical fiber 4, specifically, two ends of the graded-index optical fiber are connected to one end of the single mode optical fiber and one end of the coreless optical fiber respectively (or the graded-index optical fiber is connected between the single mode optical fiber and the coreless optical fiber).
Fig. 4 is a cross-sectional view of an ablation catheter assembly provided in accordance with an embodiment of the present application. Referring to fig. 4, both the ablation fiber 3 and the splice fiber 4 are disposed inside the protective tube 2. In some embodiments, referring to fig. 4, the protective tube 2 is a multi-lumen tube having a first lumen 210 and a second lumen 220, the ablation fiber 3 being located in the first lumen 210 and the splice fiber 4 being located in the second lumen 220. In this manner, the ablation fiber 3 and the splice fiber 4 serve as the inner core of the ablation catheter assembly 100.
Referring to fig. 2, one end 3A of the ablation optical fiber 3 and one end 4A of the splice optical fiber 4 are both connected to the connector 1. The other end 3B of the ablation optical fiber 3 and the other end 4B of the splicing optical fiber 4 are both positioned in the other end 2B of the protection tube 2, so that laser output is realized.
Fig. 5 is a schematic flow chart of a laser ablation method provided by an embodiment of the present application. The laser ablation method provided by the embodiments of the present application uses the ablation catheter assembly 100 provided by the present embodiment. The laser ablation method provided by the present embodiment includes steps Q1 to Q3, and the main implementation body is the feedback system 400. The feedback system 400 may be a notebook computer, a super-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), or the like.
Step Q1, collecting the absorption attenuated light from the plaque by the spliced fiber 4.
In performing laser ablation, the other end 2B (also referred to as distal end) of the protective tube 2 is advanced into the blood vessel, and the position of the ablation catheter assembly 100, and in particular the other end 2B of the protective tube 2, in the blood vessel is determined using coronary angiography. When the ablation catheter assembly 100 reaches a plaque area in a blood vessel, the feedback system 400 receives an optical signal from the spliced optical fiber 4, specifically, the feedback system 400 transmits measurement light, such as near infrared light, to the spliced optical fiber 4, the spliced optical fiber 4 transmits the measurement light to the plaque, the measurement light is reflected by the plaque in the blood vessel, and the spliced optical fiber 4 receives the reflected light to collect absorption attenuation light of the measurement light from the plaque, so as to record a lesion condition in the blood vessel.
And step Q2, determining the type of the plaque according to the absorption attenuation light.
After the absorption attenuation light from the plaque is collected, the plaque attenuation Index (IPA) of the blood vessel can be obtained through single-point imaging information according to the absorption attenuation light, and then the plaque type is obtained, so that the plaque type is determined.
Step Q3, according to the type of the plaque, determines the energy of the laser output to the ablation fiber 3 to ablate the plaque.
Different plaque types correspond to different laser energies, and then after determining the plaque type, the laser energy corresponding to that type of plaque can be determined. The feedback system 400 sends a control instruction to the ablation laser 200 according to the determined energy, and controls the ablation laser 200 to output laser with corresponding energy density to the ablation optical fiber 3, so as to control the energy of the laser output by the ablation catheter assembly 100 and ablate plaques in blood vessels. Wherein the ablation catheter assembly 100 is advanced during ablation of the plaque.
According to the above, when performing laser ablation, the other end 2B of the protection tube 2 enters the blood vessel, the optical imaging signal of the blood vessel is acquired by the splice optical fiber 4 to obtain the plaque attenuation Index (IPA) of the blood vessel, the plaque type can be determined according to the value of the plaque attenuation index, so as to determine the energy of the laser transmitted by the ablation optical fiber 3, and then the laser with the energy is output by the ablation optical fiber 3 to ablate the plaque, so that the laser with proper energy can be output for a specified plaque to ablate the specified plaque once, and the ablation efficiency can be improved.
In some embodiments, referring to fig. 2, the protection tube 2 comprises a protection segment 21 and a transition segment 22, the transition segment 22 being arranged between the protection segment 21 and the connection head 1. The changeover portion 22 can be soft rubber tube, and changeover portion 22 is connected between connector 1 and protection section 21, plays the transition effect between connector 1 and protection section 21 to make protection tube 2 have certain compliance, so, protection tube 2 is difficult for appearing buckling.
In some embodiments, referring to fig. 2, the ablation catheter assembly 100 further comprises a visualization ring 5, the visualization ring 5 being arranged at the other end 2B of the protective tube 2, in particular at the front end of the protective tube 2. The developing ring 5 may be a tantalum ring, which on the one hand protects the optical fiber at the other end 2B of the protective tube 2, and on the other hand, performs a developing function, and the position of the other end 2B (or the catheter tip) of the protective tube 2 in the blood vessel can be tracked in real time by using the developing ring 5, so as to facilitate the operation of medical staff.
In some embodiments, referring to fig. 2, the ablation catheter assembly 100 further comprises a guidewire 6; correspondingly, referring to fig. 4, the other end 2B of the protective tube 2 is provided with a guide wire lumen 230; the surface of the protection tube 2 is provided with a guide wire inlet 201 and a guide wire outlet 202; the guide wire 6 is passed through the guide wire inlet 201 into the interior of the protective tube 2, and one end of the guide wire 6 is passed out through the guide wire outlet 202, so that at least a part of the guide wire 6 is located in the guide wire lumen 230. The guide wire 6 is used to guide the protective tube 2 through the blood vessel.
In some embodiments, referring to fig. 2, the protective tube 2 is provided with a mark 7, and in particular, a printed mark 7 may be provided on the surface of the protective section 21, which may be used to assist a medical practitioner in determining the length of the ablation catheter assembly 100 that enters the blood vessel.
In some embodiments, referring to fig. 4, the diameter of the ablation fiber 3 is larger than the diameter of the splice fiber 4, such that the central axis of the ablation fiber 3 is not coincident with the central axis of the protective tube 2; the cross section of the ablation optical fiber 3 is circular, the cross section of the protection tube 2 is also circular, and the centers of the two circles are not coincident (or staggered); thus, the ablation catheter assembly 100 is an eccentric ablation catheter assembly, the ablation optical fiber 3 performs an eccentric rotation motion on the protection tube 2, for example, rotates around the second cavity 220 or the guide wire cavity 230, and the ablation optical fiber 3 can rotate to different lesion positions in the blood vessel for laser ablation, thereby increasing the ablation area.
Fig. 6 shows a block diagram of a laser ablation device provided in an embodiment of the present application, corresponding to the method described in the above embodiment, and only the parts related to the embodiment of the present application are shown for convenience of illustration.
Referring to fig. 6, the apparatus includes a light collection module 1Q, a plaque type determination module 2Q, and an energy determination module 3Q.
A light collection module 1Q for: the absorption-attenuated light from the plaque is collected by the spliced fiber.
A blob type determining module 2Q for: the type of plaque is determined based on the absorption of the attenuated light.
An energy determination module 3Q for: according to the type of the plaque, the energy of the laser output to the ablation fiber is determined to ablate the plaque.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
The embodiment of this application gathers the type that the signal calculates plaque attenuation Index (IPA) through the concatenation optic fibre, according to plaque attenuation Index (IPA) value confirm the plaque in the blood vessel, and then confirm the energy of ablating laser, realize visual intelligent feedback processing flow.
Illustratively, e.g. IPA9.5If the plaque is larger than 100, the plaque can be confirmed to be a lipid plaque. The energy density required by the lipid plaque is 40-50 mJ/mm2. Thus, the energy emitted by the laser is determined according to the loss of the optical path.
When laser ablation is performed on a target object, the other end 2B (also referred to as a distal end) of the protective tube 2 enters a blood vessel of the target object, and the position of the ablation catheter assembly 100, specifically, the distal end of the protective tube 2, in the blood vessel is determined using coronary angiography. When the ablation catheter assembly 100 reaches the plaque area in the blood vessel, the feedback system 400 receives an optical signal from the spliced fiber 4, and in particular, the feedback system 400 transmits measurement light, such as near infrared light, to the spliced fiber 4, the spliced fiber 4 transmits the measurement light to the plaque, reflects off of the plaque in the blood vessel, and the spliced fiber 4 receives the reflected light to collect absorption attenuation light from the plaque on the measurement light. The feedback system 400 can obtain the plaque attenuation Index (IPA) of the blood vessel through single-point imaging information according to the absorption attenuation light, so as to determine the type of plaque, and further determine the laser energy corresponding to the type of plaque. The feedback system 400 sends a control command to the ablation laser 200 according to the determined energy, controls the ablation laser 200 to output laser light with a corresponding energy density to the ablation optical fiber 3 of the ablation catheter assembly 100, and ablates plaque with the ablation catheter assembly 100, wherein the ablation catheter assembly 100 may move forward while ablating. In this way, laser energy corresponding to the plaque can be output to perform efficient laser ablation on the plaque.
Fig. 7 is a schematic structural diagram of a computing device according to an embodiment of the present application. As shown in fig. 7, the computing device 70 of this embodiment includes: at least one processor 700 (only one shown in fig. 7), a memory 701, and a computer program 702 stored in the memory 701 and executable on the at least one processor 700; the steps in any of the various method embodiments described above are implemented when the computer program 702 is executed by the processor 700.
The computing device 70 may be a desktop computer, a notebook computer, a palm top computer, a cloud server, or other computing device. The computing device may include, but is not limited to, a processor 700 and a memory 701. Those skilled in the art will appreciate that fig. 7 is merely exemplary of computing device 70 and does not constitute a limitation of computing device 70 and may include more or fewer components than shown, or some of the components may be combined, or different components, such as input output devices, network access devices, buses, etc.
The Processor 700 may be a Central Processing Unit (CPU), and the Processor 700 may also be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Illustratively, the computer program 702 may be partitioned into one or more modules/units, which are stored in the memory 701 and executed by the processor 700 to accomplish the present application. One or more modules/units may be a series of computer program instruction segments capable of performing specific functions that are used to describe the execution of computer program 702 on computing device 70.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The aforementioned integrated units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above may be implemented by a computer program, which may be stored in a computer-readable storage medium, to instruct related hardware; the computer program may, when being executed by a processor, realize the steps of the respective method embodiments described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium includes: any entity or device capable of carrying computer program code to an apparatus/terminal device, recording medium, computer Memory, Read-Only Memory (ROM), Random-Access Memory (RAM), electrical carrier wave signals, telecommunications signals, and software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.
Embodiments of the present application also provide a computer-readable storage medium, which stores a computer program, and the computer program is implemented to realize the steps of the above method embodiments when executed by a processor.
Embodiments of the present application provide a computer program product, which when run on a computing device, causes the computing device to implement the steps in the various method embodiments described above.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/device and method may be implemented in other ways. For example, the above-described apparatus/device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An ablation catheter assembly comprising a connector, a protective tube, an ablation fiber and a splice fiber for collecting absorption attenuation light from plaque;
the ablation optical fiber and the splicing optical fiber are arranged in the protection tube;
one end of the protection tube, one end of the ablation optical fiber and one end of the splicing optical fiber are connected with the connector.
2. The ablation catheter assembly of claim 1, wherein the protective tube comprises a protective segment and a transition segment, the transition segment being disposed between the protective segment and the connector.
3. The ablation catheter assembly of claim 1, further comprising a visualization ring disposed at the other end of the protective tube.
4. The ablation catheter assembly of claim 1, further comprising a guide wire, wherein a surface of the protective tube is provided with a guide wire port through which the guide wire penetrates into an interior of the protective tube.
5. The ablation catheter assembly of claim 1, wherein said protective tube has a first lumen and a second lumen, said ablation fiber being located within said first lumen and said splice fiber being located within said second lumen.
6. The ablation catheter assembly of claim 1, wherein said spliced optical fiber comprises a plurality of lengths of optical fiber that are connected in series along a length of said spliced optical fiber to form said spliced optical fiber.
7. The ablation catheter assembly of any of claims 1-6, wherein a diameter of the ablation optical fiber is larger than a diameter of the spliced optical fiber such that a central axis of the ablation optical fiber is not coincident with a central axis of the protective tube.
8. A laser ablation system comprising the ablation catheter assembly of any of claims 1-7.
9. The laser ablation system of claim 8, further comprising an ablation laser, a coupling module, and a feedback system;
the coupling module is disposed between the ablation catheter assembly and the ablation laser;
the feedback system is used for receiving optical signals from the splicing optical fiber so as to control the ablation laser.
10. A method of laser ablation using the ablation catheter assembly of any of claims 1-7, the method comprising:
collecting absorption-attenuated light from plaque through the spliced optical fiber;
determining the type of the plaque according to the absorption attenuation light;
and determining the energy of the laser output to the ablation optical fiber according to the type of the plaque so as to ablate the plaque.
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