WO2013002050A1 - Dispositif d'irradiation de lumière laser - Google Patents

Dispositif d'irradiation de lumière laser Download PDF

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Publication number
WO2013002050A1
WO2013002050A1 PCT/JP2012/065461 JP2012065461W WO2013002050A1 WO 2013002050 A1 WO2013002050 A1 WO 2013002050A1 JP 2012065461 W JP2012065461 W JP 2012065461W WO 2013002050 A1 WO2013002050 A1 WO 2013002050A1
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Prior art keywords
laser light
irradiation
incident
laser
pattern
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PCT/JP2012/065461
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English (en)
Japanese (ja)
Inventor
靖章 桑田
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大研医器株式会社
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Publication of WO2013002050A1 publication Critical patent/WO2013002050A1/fr

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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
    • 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
    • A61B2018/2035—Beam shaping or redirecting; Optical components therefor
    • A61B2018/20351—Scanning mechanisms
    • 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
    • A61B2018/2035—Beam shaping or redirecting; Optical components therefor
    • A61B2018/20361—Beam shaping or redirecting; Optical components therefor with redirecting based on sensed condition, e.g. tissue analysis or tissue movement
    • 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
    • A61B2018/2211—Plurality of fibres

Definitions

  • the present invention relates to a laser beam irradiation apparatus that can pattern-irradiate a laser beam to an irradiation target.
  • a surgical operation in order to cauterize, excise, or incise a tissue, laser light is introduced into a body cavity using an optical fiber or the like, and the tissue is irradiated.
  • Such a surgical operation by laser light irradiation is useful for a tissue having a small diameter, such as an endoscope, a digestive tract, a deep brain, a blood vessel, and a bronchus.
  • the neck of the endoscope cannot be shaken with a tissue having a small diameter, and laser irradiation cannot be performed in the oblique direction.
  • it is necessary for the doctor to reinsert or rotate the laser beam irradiation device while checking with an endoscopic monitor so that the laser beam irradiation direction is appropriate. was a problem.
  • Patent Document 1 in a laser probe having a laser light guide means in an insertion portion, a laser beam reflecting mirror provided at the distal end portion of the insertion portion, and a swing motion means for swinging the reflection mirror, A laser probe comprising a control means for controlling the swing movement means in an arbitrary pattern is described (Patent Document 1).
  • the beam scanning probe for scanning the predetermined beam emitted from the wave source section in the body cavity to obtain an observation image includes a scanning mirror for scanning the predetermined beam in the body cavity, and the scanning mirror is an elastic member. And at least one cantilever whose one end is supported by the base, and a rotating mirror whose peripheral part is supported by the free end of the cantilever, the voltage applied to the piezoelectric member Is applied, the free end is displaced in a predetermined direction to displace the peripheral portion while holding the central portion of the rotating mirror at a substantially constant position, thereby tilting the rotating mirror.
  • Patent Document 2 A beam scanning probe is described (Patent Document 2).
  • an optical scanning device capable of scanning with a large angle of view and having a wide scanning range, a scanning unit that deflects incident light and emits it toward the target region so as to scan the target region, and the scanning unit
  • an optical scanning device including a selective incident portion that sequentially selects the optical path of the light and makes the light incident on the scanning portion (Patent Document 3).
  • Patent Documents 1 and 2 Since the techniques described in Patent Documents 1 and 2 have a structure in which a reflection mirror that is electrically driven is attached to the output end side of an optical fiber, the light irradiation range is limited to a certain range, and a laser is applied to an arbitrary region. It was impossible to irradiate light with a pattern, and it was still impossible to ensure irradiation accuracy without mechanically controlling the position and direction of the laser beam emission end.
  • Patent Document 3 is a technique that pays attention to scanning at a large angle of view, and there is no viewpoint of irradiating a laser beam with a pattern in the scanning range.
  • the present invention is a technique that can be used in, for example, a surgical operation or the like, and irradiates a laser beam in a pattern in a pattern without mechanically controlling the position and direction of a laser beam emission end (pattern irradiation). It is an issue to provide technology.
  • the present invention that solves the above-described problems is a laser light irradiation device that pattern-irradiates a laser beam onto an irradiation target region, an emission unit that emits laser light toward the irradiation target region, and a laser beam applied to the emission unit.
  • a bundle fiber having a plurality of cores serving as an optical path, and a selection incident unit that selects each core of the bundle fiber and makes a laser beam incident so as to correspond to the pattern irradiation.
  • a bundle fiber having a plurality of cores is used as the optical path of the laser light of the laser light irradiation device, and each core is selected so as to correspond to pattern irradiation, and the laser light is incident. Without mechanically controlling the direction, it becomes possible to irradiate the irradiation target region with an arbitrary pattern (pattern irradiation).
  • the emitting unit includes a deflecting unit that deflects laser light in different directions with respect to the optical axis of the bundle fiber according to the position of each core of the bundle fiber.
  • the emission direction of the laser light can be set according to the size and shape of the object (for example, tissue) to be irradiated, and the irradiation possible range of the irradiation apparatus can be optimized.
  • the laser beam can be shaped so that the irradiation power density does not exceed a certain level, the safety of the operation can be ensured.
  • the emission unit includes an emission optical system that forms an image of the laser beam emitted from the deflection unit in the irradiation target region.
  • the selective incident portion changes the incident light path over time so that the laser light source and the laser light from the laser light source can sequentially enter all the cores of the bundle fiber.
  • the laser light source includes a laser light output controller that turns on the output of the laser light when an incident light path corresponding to the pattern irradiation is formed. .
  • this mode by periodically changing the incident optical path, it is possible to eliminate the mechanical control that forms the incident optical path each time according to the pattern to be irradiated, and to turn on / off the output of the laser light from the laser light source.
  • Arbitrary pattern irradiation can be realized by electrical control.
  • the incident optical path variable unit includes, for example, an angle variable mirror, and the inclination angle of the angle variable mirror is associated with the incident optical path to each core of the bundle fiber.
  • the incident optical path variable unit includes an imaging optical system that forms an image of the laser light reflected by the angle variable mirror between the angle variable mirror and the deflection unit. It is characterized by that. Since the incident light path variable unit according to this embodiment includes an imaging optical system that forms an image of the laser beam reflected by the variable angle mirror on the way and then enters the core, the incident optical path to each core. Can be easily set and controlled. That is, by providing an optical system that forms an image in the middle, it is possible to easily set the lens arrangement particularly in relation to the focus distance and the like. Thereby, control processing for each laser beam incident on each core becomes possible, and control can be performed with higher accuracy.
  • the said selection incident part forms an incident optical path so that the laser beam from the laser light source and the said laser light source can inject only with respect to each selected core of the said bundle fiber. And an incident optical path forming part.
  • the said laser light source is a laser array provided with a several laser element, for example.
  • the incident optical path forming unit includes a laser element output control unit that controls an output for each laser element.
  • each laser element and the incident optical path to each core of the bundle fiber are associated with each other.
  • the laser light output control unit and the laser element output control unit include a function of controlling an output value of laser light.
  • the laser light output control unit and the laser element output control unit include a function of controlling the output value of the laser light, for example, adjusting the output value (strongness) of the laser light to be irradiated with the pattern temporally, The irradiation intensity can be partially changed. As a result, it is possible to bake only the necessary parts strongly or weakly.
  • the said incident optical path formation part is provided with the projection control part which controls a projection for every digital mirror device and the micro mirror of the said digital mirror device, for example.
  • the minute mirror and the incident optical path to each core of the bundle fiber are associated with each other.
  • the selective incident portion and the bundle fiber are detachably connected via an optical coupler.
  • the bundle fiber and the emitting part can be separated from the selective incident part and disposed of.
  • the bundle fiber and the emitting part are preferably inserted because they are inserted into the body cavity, but the selective incident part can be used repeatedly. Economically favorable.
  • the selective incident unit acquires an image data of an irradiation target region and displays an image of the irradiation target region on an image display unit, and specifies an irradiation pattern in the irradiation target region.
  • a coordinate data acquisition unit that acquires coordinate data for performing, and an image synthesis unit that synthesizes the coordinate data with the image data and displays an irradiation pattern on an image of the irradiation target region.
  • the emitting portion is detachably fixed to the distal end portion of the endoscope, the irradiation target region of the laser light is in the observation field of the endoscope, and is emitted from each core of the emitting portion.
  • Each laser beam to be associated with each irradiation position of the irradiation target region is characterized by being associated with each other. Thereby, pattern irradiation can be accurately performed under observation with an endoscope.
  • the present invention is a laser light irradiation method for pattern irradiation of a laser beam to an irradiation target region, wherein a bundle fiber having a plurality of cores serving as an optical path of the laser beam is used, and the bundle fiber is selectively used as an arbitrary core And a second step of irradiating the irradiation target area with the laser light guided to each core of the bundle fiber, and the first step corresponds to the pattern irradiation.
  • the respective cores are selected as described above.
  • a bundle fiber is used as the optical path of the laser beam of the laser beam irradiation device, each core is selected so as to correspond to the pattern to be irradiated, the laser beam is incident, and the laser beam guided to each core is irradiated By irradiating the laser beam, it becomes possible to irradiate the irradiation target region with any desired pattern (pattern irradiation).
  • the step of acquiring image data of the irradiation target region and displaying the image on the image display unit, and coordinates for specifying the irradiation pattern of the laser light in the irradiation target region A step of acquiring data and a step of combining the coordinate data with the image data and displaying an irradiation pattern on the image of the irradiation target region are performed.
  • the present invention it is possible to irradiate the irradiation target region with an arbitrary pattern (pattern irradiation) without mechanically controlling the position and direction of the emission end of the laser light.
  • This laser beam irradiation apparatus 1 is used by inserting into a body cavity under an endoscope for the purpose of cauterization or incision of a tissue in a surgical operation, and irradiates a laser beam in a pattern on an irradiation target region.
  • irradiation target region refers to a target region that can be irradiated with laser light
  • pattern irradiation refers to laser light with a specific pattern (shape or pattern) in a specific part of the region. Refers to irradiation.
  • the endoscope system includes a video scope 100 and a video system main body 110.
  • the video system main body 110 includes a light source device 111 that supplies light for shooting, air, and the like, a video processor 112, a color monitor 113, and the like.
  • the video scope 100 includes a connection unit 101 to the light source device 111, an operation unit 102, an insertion unit 103, a distal end unit 104, a forceps insertion port 105, and the like.
  • the laser beam irradiation device 1 can insert the insertion portion 6 (see FIG. 2) from the insertion port 105 of the forceps of the video scope 100 and attach the emission portion 4 to the distal end portion 104 portion (forceps opening portion). It is configured.
  • the laser beam irradiation apparatus 1 includes an emission unit 4 that emits laser light toward an irradiation target region, and a bundle fiber 3 that has a plurality of cores that serve as optical paths of the laser beam to the emission unit 4.
  • a selection incident section 2 for selecting each core of the bundle fiber 3 and making a laser beam incident thereon and an optical coupler 5 are provided.
  • the laser light is guided from the selective incident portion 2 to the emitting portion 4 through the optical coupler 5 and the bundle fiber 3.
  • the bundle fiber 3 constitutes, together with the emitting portion 4, an insertion portion 6 that is used by being inserted into a body cavity under an endoscope.
  • the selective incident part 2 selects each core 31 of the bundle fiber 3 so that the laser light is incident so as to correspond to the pattern to be irradiated with the laser light.
  • the selective incident unit 2 changes the incident light path over time so that the laser light source 21 and the laser light from the laser light source 21 can be sequentially incident on all the cores 31 of the bundle fiber 3.
  • an incident light path variable unit 22 The laser light source 21 includes a laser light output control unit, which will be described later, that turns on the output of the laser light when an incident optical path corresponding to pattern irradiation is formed.
  • the laser light source 21 includes a camera image receiving unit (image data acquiring unit) 23 that receives a camera image signal of an endoscope, a mouse operation recognizing unit (coordinate data acquiring unit) 24, and an image composition.
  • a unit 25 an irradiation region determination unit 26, a laser light output control unit 27, a laser element 210, a mirror driving unit 28, a mirror element 220, and an optical coupler 29 are provided. Next, these details will be described.
  • the camera image receiving unit 23 receives the camera image signal of the endoscope that reflects the irradiation target of the laser light and converts it into a signal that can be output to the monitor 113.
  • the mouse operation recognizing unit 24 recognizes the operation of the mouse M and converts it into a signal designating a laser light irradiation area in the monitor image.
  • the image synthesizing unit 25 synthesizes the camera image and the mouse operation signal, and converts them on the monitor 113 into an image signal obtained by synthesizing the camera image and the laser light irradiation designated area (irradiation pattern).
  • the irradiation area determination unit 26 outputs the laser light output control unit 27 and the mirror drive unit 28 in respective signals so as to irradiate the laser light irradiation designated area combined with the camera image.
  • the laser light output control unit 27 determines the output value of the laser element 210 based on the control signal from the irradiation region determination unit 26 and drives the laser element 210.
  • the mirror driving unit 28 determines the operation of the mirror element 220 based on the control signal from the irradiation area determination unit 26 and drives the mirror element 220.
  • the laser light source 21 can output laser light having various wavelengths.
  • the incident light path variable unit 22 changes the incident light path over time so that the laser light L emitted from the laser element 210 of the laser light source 21 can sequentially enter all the cores of the bundle fiber 3.
  • the incident optical path variable unit 22 includes an angle variable mirror 221 and a reflection mirror 222 as shown in FIG.
  • the inclination angle of the variable angle mirror 221 and the incident optical path to each core of the bundle fiber 3 are associated with each other.
  • the inclination angle of the variable angle mirror 221 is ⁇
  • the bundle fiber is passed through the reflection mirror 222.
  • the incident optical path A is formed in the third core a and the tilt angle is ⁇
  • the incident optical path B is formed in the core b through the reflection mirror 222, and the different cores are changed as the tilt angle changes thereafter.
  • incident light paths are sequentially formed.
  • the incident optical path C is formed through the reflection mirror 222 to the core c. This incident optical path is formed periodically.
  • one core does not necessarily have to be selected for one inclination angle.
  • a plurality of cores in a certain region may be selected for one inclination angle.
  • variable angle mirror 221 is composed of a galvanometer mirror, and is controlled to perform a constant drive via a drive system (actuator) (not shown).
  • the reflection mirror 222 reflects the laser light patterned by the variable angle mirror 221 and guides it in a specific direction in a collimated state.
  • a condensing lens 61 for increasing the power of laser light and a collimating lens 62 for collimating the condensed laser light are provided between the laser element 210 and the angle variable mirror 221. ing. Between the collimating lens 62 and the variable angle mirror 221, a slot 63 for forming a cross-sectional shape of the collimated laser beam is provided.
  • the selective incident unit 2 further includes a deflection lens group 7 for causing the direction of the laser light patterned by the incident optical path variable unit 22 to correspond to each core 31 of the bundle fiber 3 to be described later. It has.
  • the deflection lens group 7 includes a pattern reduction lens 71 that deflects the range of the laser beam of the pattern reflected by the reflection mirror 222 in a direction to reduce the range, and the deflected laser light in a direction substantially perpendicular to the incident position of the core. It comprises a pattern light incident lens 72 that deflects the laser light so as to be incident.
  • the laser light output control unit 27 turns on the output of the laser light L from the laser element 210 when the incident optical path corresponding to the pattern irradiation is formed. That is, the laser element 210 only during the time when the incident light path corresponding to the pattern is formed so that the laser light is incident only on the incident light path corresponding to the pattern to be irradiated among the incident light paths formed sequentially. Control is performed so that the output of the laser light L from is turned on.
  • the laser light output control unit includes a function for controlling the output value of the laser light.
  • the laser light output control includes a function to control the output value of the laser light. For example, the output value (strength) of the laser light for pattern irradiation is adjusted temporally to partially change the irradiation intensity. Can be made. As a result, it is possible to bake only the necessary parts strongly or weakly.
  • the bundle fiber 3 is a bundle of a plurality of optical fibers 31.
  • Each optical fiber 31 has a core (not shown) that carries light at the center thereof.
  • the optical fiber 31 transmits laser light incident on the core at the tip thereof from the laser light source 21 of the selective incident portion 2 and emits it from the other end.
  • the number of optical fibers 31 constituting the bundle fiber 3 is, for example, about several hundred to several thousand.
  • the selective incident part 2 and the bundle fiber 3 are detachably connected by an optical coupler 5.
  • the optical coupler 5 couples the laser beam patterned by the selective incident portion 2 to the core of the bundle fiber 3.
  • the emitting unit 4 emits the laser light guided to the bundle fiber 3 toward the irradiation target region.
  • Each core of the bundle fiber 3 is associated with an irradiation point of the irradiation target region.
  • the laser light emitted from the core a of the bundle fiber 3 is emitted toward the irradiation point A2, and is emitted from the core b.
  • the emitted laser light is emitted toward the irradiation point B2, and the laser light emitted from the core c is emitted toward the irradiation point C2. Accordingly, which irradiation point is irradiated with the laser light is determined according to the output of the laser light from the laser light output control unit 27 described above.
  • the emitting unit 4 includes a deflection lens (deflection unit) 41.
  • the deflecting unit 41 deflects the laser light in different directions with respect to the optical axis of the bundle fiber 3 according to the position of each core of the bundle fiber 3. That is, the direction in which the laser light is guided for each core is determined such that the laser light emitted from the core a is directed to the irradiation point A2 and the laser light emitted from the core b is directed to the irradiation point B2. Yes.
  • the laser light from the core of the bundle fiber 3 is deflected by the deflecting unit 41 and emitted radially at a preset angle, and irradiation to an appropriate range is possible.
  • the laser light emitted from each core is overlapped to prevent the power from increasing, avoiding dangers such as unintended tissue damage, and ensuring the safety of surgery. Yes.
  • the emitting portion 4 is detachably fixed (positioned) to the distal end portion 104 of the insertion portion 103 of the endoscope. Furthermore, the irradiation target area of the laser beam L is set within the observation field of view of the endoscope. And each laser beam radiate
  • a key groove 106 is provided in the distal end portion 104 of the video scope (endoscope) 100, and a convex shape provided in the boundary portion between the bundle fiber 3 and the emitting portion 4 in the key groove 106.
  • the key 4a is detachably fixed (positioned) with the key 4a fitted.
  • tip part 104 of an endoscope of this output part 104 not only the example of illustration but various methods are employable if it functions as a relative fixing means.
  • the shape of the inner peripheral surface of the hole portion (near the forceps opening) of the distal end portion 104 where the emitting portion 4 is inserted is formed in a shape other than a true circle such as a polygonal cross section or an ellipse, and the portion of the emitting portion 4 is formed in the hole
  • the outer peripheral surface shape of the emitting portion 4 can be formed so that the fitting portion is closely fitted and detachably fixed.
  • reference numeral 107 denotes an objective lens of a micro camera
  • reference numeral 108 denotes a light guide that illuminates the inside of the body with light from a light source.
  • the laser beam irradiation apparatus 1 of the present embodiment can be used together with a direct-viewing endoscope as shown in FIG. 1, and the insertion portion 6 can be inserted from the insertion port 105 of the forceps. Moreover, as shown in FIG. 7, since the laser beam irradiation apparatus 1 is equipped with the deflection
  • the image data of the irradiation target area and the coordinate data for specifying the irradiation pattern with the mouse are synthesized so that the irradiation pattern can be displayed on the image of the irradiation target area by operating the mouse.
  • irradiation pattern irradiation
  • FIGS. 8 (a), 8 (b), and 8 (c) Thereby, it becomes easy to specify the position of pattern irradiation correctly, and it becomes possible to raise the precision of pattern irradiation markedly.
  • FIG. 8 shows an example in which the irradiation target region for pattern irradiation is the esophageal inner wall.
  • the laser element 210 is not limited to one that emits a single laser beam, and a laser array that emits a plurality of laser beams (laser beams) may be used. In this way, the number of operations of the angle variable mirror 221 in the incident light path variable unit 22 can be reduced.
  • the selective incident unit 2 allows the laser light from the laser light source 21 and the laser array 212 of the laser light source 21 to be incident only on each selected core of the bundle fiber 3.
  • an incident optical path forming unit 270 that forms the incident optical path.
  • P4 and P5 indicate irradiation patterns.
  • the laser light source 21 includes, for example, a laser array 213 including a plurality of laser elements 211 such as a surface emitting semiconductor laser array as shown in FIG. 10 or an edge emitting semiconductor as shown in FIG. Such as a laser array 214.
  • the incident optical path forming unit 270 includes a laser element output control unit that controls output for each laser element 211.
  • this laser element output control unit also preferably includes a function of controlling the output value of the laser beam.
  • the mechanical control for forming the incident optical path each time according to the pattern to be irradiated can be eliminated, and it can be arbitrarily controlled by the on / off electrical control of the output of each laser element 211 from the laser light source 21. The pattern irradiation can be realized.
  • the incident optical path forming unit may include a digital mirror device and a projection control unit that controls projection for each micro mirror of the digital mirror device, although not particularly illustrated.
  • the minute mirror and the incident optical path to each core of the bundle fiber are associated with each other. Even in such an embodiment, it is possible to eliminate the mechanical control that forms the incident optical path each time depending on the pattern to be irradiated, and to realize arbitrary pattern irradiation by electrical control of on / off driving of the micromirrors. Is possible.
  • FIG. 12 is a schematic configuration diagram showing another embodiment of the incident light path variable unit 22, and FIG. 13 is a schematic configuration diagram of its emission unit.
  • FIG. 12 for convenience of explanation, the optical paths of laser light incident on different fibers are shown as separate diagrams for the purpose of easy understanding so as not to partially overlap a plurality of optical paths.
  • the incident light path variable unit 22 also includes a condensing lens 61, a collimating lens 62, a laser light shaping slot 63, and a variable angle mirror 221 for the laser light L emitted from the laser element 210 shown in FIG. It prepares in this order.
  • the reflection is performed by the variable angle mirror 221 shown at the center of the scan mirror as shown in FIG.
  • An imaging optical system 8 is provided for causing the laser beam L thus formed to form an image on the way and then entering the core of the bundle fiber 3.
  • the imaging optical system 8 is disposed on an optical path that is sequentially enlarged through an imaging lens 81 that forms an image of the laser beam L having a pattern reflected by the variable angle mirror 221 and an imaging region 82 indicated by an arrow S.
  • a pattern reduction lens 83 that deflects the laser light range of the pattern in a direction to reduce the pattern light incidence, and pattern light incidence that deflects the laser light so that the deflected laser light is incident in a direction substantially perpendicular to the incident position of the core.
  • a lens group 84 The imaging lens 81, the pattern reduction lens 83, and the pattern light incident lens group 84 of the imaging optical system 8 are disposed in the lens barrel 85.
  • the incident optical path variable unit 22 of this embodiment when the incident beam diameter ⁇ 1 of the laser light at the imaging lens 81 is, for example, 8 mm, the spot diameter ⁇ 2 at the stop position in the imaging region 82 is about 0.4 mm.
  • the spot diameter ⁇ 3 at the fiber end face is set to be reduced and projected to about 0.04 mm. Therefore, the reduction projection is set to about 10 times from the aperture position to the fiber end face.
  • the incident optical path variable unit 22 forms an image of the laser light L reflected by the variable angle mirror 221 on the way and then enters the core of the bundle fiber 3. Since the image optical system 8 is provided, the setting and control of the incident optical path to each core can be facilitated. That is, by providing an optical system that forms an image in the middle, it is possible to easily set the lens arrangement particularly in relation to the focus distance and the like. Thereby, individual control processing for each laser beam incident on each core is possible, and control can be performed with higher accuracy.
  • FIG. 13 is a diagram showing the configuration of the emission part 4 at the tip of the bundle fiber 3, partially shown in cross section.
  • a front end exposed portion (fiber mount portion) of the fiber bundle 34 covered with an outer skin 33 such as silicon rubber is inserted into the lens barrel 43 from the base end side and is positioned and fixed.
  • a deflection lens 41 is provided near the tip in the lens barrel 43.
  • the length of the lens barrel 43 is set to 10 mm, and the inner diameter thereof is set to about 1 mm.
  • the tip of the fiber bundle 34 is located near the middle of the length of the lens barrel 43.
  • the thickness of the deflection lens 41 is formed within 1 mm, and an interval that becomes an optical path in the lens barrel 43 is provided between the deflection lens 41 and the fiber end surface 34a.
  • the spot diameter ⁇ 4 at the fiber end face is 0.04 mm
  • the spot diameter ⁇ 5 at the imaging position in the laser light irradiation target is about 0.16 to 0.20. It is set to become.
  • the projection magnification is about 4 to 4.7 times.
  • the present invention can be applied to other applications such as projectors and microscopes.
  • the laser light irradiation technique of the present invention can be used for irradiation objects that are subjected to pattern irradiation with laser light. In particular, this is effective when irradiating a laser beam in a pattern to an irradiation target region in an endoscopic surgical operation or the like.

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  • Radiation-Therapy Devices (AREA)

Abstract

La présente invention concerne un dispositif d'irradiation de lumière laser destiné à irradier selon un motif (irradiation de motif) une région à irradier de lumière laser, le dispositif d'irradiation de lumière laser étant conçu pour fournir une technique qui peut être utilisée dans une opération chirurgicale et équivalents et qui permet d'irradier selon un motif la région à irradier de lumière laser sans mécaniquement réguler la position et la direction de l'extrémité de sortie de la lumière laser. Ledit dispositif est doté : d'une unité d'émission (4) qui émet une lumière laser sur une région à irradier ; d'une fibre de faisceau (3) qui a une pluralité de noyaux servant de chemins optiques de la lumière laser jusqu'à l'unité d'émission ; et d'une unité d'incidence sélective (2) qui choisit les âmes respectives de la fibre de faisceau de manière à correspondre à l'irradiation selon un motif et entraîner l'incidence de la lumière laser dessus.
PCT/JP2012/065461 2011-06-29 2012-06-18 Dispositif d'irradiation de lumière laser WO2013002050A1 (fr)

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JP2011-144449 2011-06-29
JP2011144449 2011-06-29
JP2011-281389 2011-12-22
JP2011281389 2011-12-22

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018235166A1 (fr) * 2017-06-20 2018-12-27 オリンパス株式会社 Système d'endoscope
US11020144B2 (en) 2015-07-21 2021-06-01 3Dintegrated Aps Minimally invasive surgery system
US11033182B2 (en) 2014-02-21 2021-06-15 3Dintegrated Aps Set comprising a surgical instrument
US11039734B2 (en) 2015-10-09 2021-06-22 3Dintegrated Aps Real time correlated depiction system of surgical tool
US11331120B2 (en) 2015-07-21 2022-05-17 3Dintegrated Aps Cannula assembly kit

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09117407A (ja) * 1985-03-22 1997-05-06 Massachusetts Inst Of Technol <Mit> 光ファイバ分光カテーテル
JP2002253573A (ja) * 2001-02-28 2002-09-10 Nidek Co Ltd レーザ治療装置
US20030050562A1 (en) * 1997-07-09 2003-03-13 Winston Thomas R. Systems and methods for guiding a medical instrument through a body
JP2003319947A (ja) * 2002-04-30 2003-11-11 Nidek Co Ltd レーザ治療装置
JP2003339757A (ja) * 2002-05-31 2003-12-02 Nidek Co Ltd 角膜レーザ手術装置
JP2010243874A (ja) * 2009-04-08 2010-10-28 Olympus Corp 光走査装置およびそれを備えた内視鏡装置、光走査方法
WO2010143402A1 (fr) * 2009-06-09 2010-12-16 株式会社フジクラ Dispositif optique, dispositif d'irradiation laser et dispositif de thérapie par laser

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09117407A (ja) * 1985-03-22 1997-05-06 Massachusetts Inst Of Technol <Mit> 光ファイバ分光カテーテル
US20030050562A1 (en) * 1997-07-09 2003-03-13 Winston Thomas R. Systems and methods for guiding a medical instrument through a body
JP2002253573A (ja) * 2001-02-28 2002-09-10 Nidek Co Ltd レーザ治療装置
JP2003319947A (ja) * 2002-04-30 2003-11-11 Nidek Co Ltd レーザ治療装置
JP2003339757A (ja) * 2002-05-31 2003-12-02 Nidek Co Ltd 角膜レーザ手術装置
JP2010243874A (ja) * 2009-04-08 2010-10-28 Olympus Corp 光走査装置およびそれを備えた内視鏡装置、光走査方法
WO2010143402A1 (fr) * 2009-06-09 2010-12-16 株式会社フジクラ Dispositif optique, dispositif d'irradiation laser et dispositif de thérapie par laser

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11033182B2 (en) 2014-02-21 2021-06-15 3Dintegrated Aps Set comprising a surgical instrument
US11020144B2 (en) 2015-07-21 2021-06-01 3Dintegrated Aps Minimally invasive surgery system
US11331120B2 (en) 2015-07-21 2022-05-17 3Dintegrated Aps Cannula assembly kit
US11039734B2 (en) 2015-10-09 2021-06-22 3Dintegrated Aps Real time correlated depiction system of surgical tool
WO2018235166A1 (fr) * 2017-06-20 2018-12-27 オリンパス株式会社 Système d'endoscope
US11583173B2 (en) 2017-06-20 2023-02-21 Olympus Corporation Light source apparatus, endoscope system, and illumination control method for adjusting first and second illumination light emitted from first and second illumination light emission ends of a light guide

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