JP5925829B2 - Laser therapy device - Google Patents

Description

  The present invention relates to a laser treatment apparatus that performs treatment by irradiating a diseased tissue, which is a lesion, with a laser beam.

  Conventionally, laser treatment has been performed in which a diseased tissue, which is a lesion, is irradiated with a laser beam, and thermal damage such as coagulation or transpiration is caused on the living tissue of the lesion by the energy of the laser beam.

  As part of the laser treatment described above, the inventor first injects a laser light absorbing medium that absorbs laser light between the affected tissue to be irradiated with the laser light and the laser light, and the laser is injected into this medium. The treatment apparatus which gives a bigger thermal damage to an affected part tissue by irradiating light was proposed (refer patent document 1).

  A treatment method using the laser treatment device described in Patent Document 1 will be briefly described. The laser treatment apparatus includes an aqueous solution injector that injects an aqueous solution in which a laser light absorbing medium is dissolved into an affected tissue, a laser oscillator that irradiates laser light to the affected tissue into which an aqueous solution has been injected, laser light irradiation, and an aqueous solution And a puncture needle used for injection.

  At the time of treatment, a hollow puncture needle through which a fiber for irradiating laser light is inserted is punctured into the affected tissue, an aqueous solution of a laser light absorbing medium is poured into the hollow portion of the needle, and simultaneously with laser light irradiation, a laser light absorbing medium Is injected into the affected tissue.

  In the treatment using the laser treatment apparatus described above, high-temperature steam is generated by the transpiration of living tissue, and this vapor causes thermal damage to the tip of the fiber and the needle. May occur.

  The inventor forms a plurality of holes for injecting the aqueous solution of the laser light absorbing medium in the thick part of the outer peripheral portion of the needle in order to protect the fiber and the body tissue from the high temperature steam described above, and the steam is inserted into the fiber. A laser treatment device that escapes to the outside through a hole has been proposed (see Patent Document 2).

Japanese Patent No. 4572410 JP 2002-200191 A

  However, it is difficult to form a plurality of injection holes in the thick portion of a needle having a diameter of about 1 mm. Even if it can be formed, the needle becomes expensive and must be discarded for each treatment. It was difficult to put it into practical use as a puncture needle.

  The present invention has been made in view of the above-described situation, and provides a laser treatment apparatus that can avoid thermal damage to a needle or a fiber, and further, explosion in a body tissue, and can produce a puncture needle at a relatively low cost. With the goal.

In order to achieve the above object, a laser treatment apparatus according to the present invention comprises:
A puncture needle for puncturing a living body, an aqueous solution injector for injecting an aqueous solution of a laser absorbing medium into the affected tissue using the puncture needle, and using the puncture needle to guide the affected tissue into which the aqueous solution has been injected. A laser oscillator that irradiates a laser beam through a fiber for use , and a vapor aspirator that uses the puncture needle to discharge the vapor of living tissue evaporated by irradiation of the laser beam to the outside of the body,
The puncture needle is composed of the following three members a, b and c ,
a. A first member having a gripping grip attached to a rear end portion of a metal needle having a sharp tip; b. A second member having a gripping portion attached to the outer periphery of the rear portion of the outer cylinder having a hollow portion through which the needle of the first member is inserted; c. Hollow adapter is attached to a rear end of the second inner cylinder diameter than the outer cylinder is smaller metallic member, the insertion hole of the light guide fiber in the adapter, for injecting the aqueous solution A third member provided with an aqueous solution injection hole and a steam discharge hole for discharging the steam
The inner cylinder of the third member is inserted into the hollow portion of the outer cylinder of the second member so that the second member and the third member are integrated, and the light guide fiber is 3 is inserted into the adapter of the member 3 and the hollow portion of the inner cylinder, the tip is exposed from the inner cylinder,
The aqueous solution injector and the aqueous solution injection hole of the third member are connected by a tube for supplying an aqueous solution, and a three-way stopcock is disposed at an intermediate portion of the tube,
The three-way cock holder is provided with a syringe for forming a pool of the aqueous solution in the living body in contact with the tip of the light guiding fiber .

Here, the puncture needle upon puncture the living body, said second of said needle of the first member is inserted into the hollow portion of the outer tube member, said first member and said second member it is preferred that but are integrated.

Further, the aqueous solution is injected through the gap of the outer cylinder of said inner cylinder of the second member the third member to the diseased tissue, the steam is hollow portions of the inner cylinder of said second member It is preferable to be discharged from the body through the body.

  Moreover, it is preferable that the hollow part of the said adapter has isolate | separated between the location connected with the said aqueous solution injection hole, and the location connected with the said vapor | steam discharge hole by the sealing material and the said inner cylinder.

  In addition, the rear part of the grip part of the second member and the front part of the adapter of the third member are respectively provided with coupling parts for integrating the second member and the third member. preferable.

  The outer cylinder of the second member is preferably made of a flexible synthetic resin, and the inner cylinder of the third member is preferably made of a metallic pipe.

  According to the laser treatment apparatus of the present invention, it is possible to provide a puncture needle for treatment at a relatively low cost while avoiding thermal damage to the needle and fiber and explosion in the body tissue.

It is a block diagram which shows the basic composition of the laser treatment apparatus concerning embodiment of this invention. It is a top view of the three members which comprise the puncture needle 1 of FIG. It is sectional drawing of the 2nd member 7 of FIG. It is sectional drawing of the 3rd member 8 of FIG. It is a top view of the three-way cock used in the embodiment of the present invention. It is a front view explaining the procedure of the first half of laser treatment. It is sectional drawing explaining the procedure of the latter half of laser treatment.

  Hereinafter, a laser treatment apparatus according to an embodiment of the present invention will be described with reference to the drawings.

<Configuration of laser treatment device>
FIG. 1 shows a basic configuration of a laser treatment apparatus according to the present embodiment. The laser treatment apparatus 100 includes a puncture needle 1, a laser oscillator 2, an aqueous solution injector 3, a vapor suction device 4, and a controller 5.

  Before explaining the configuration of the laser treatment apparatus 100, the principle of laser treatment which is a premise of the present invention will be explained. In the laser treatment, a light guide fiber is inserted into the inner cylinder of the puncture needle, and a medium that strongly absorbs laser light is made into an aqueous solution and injected into the affected tissue from the gap between the inner cylinder and the outer cylinder. And by irradiating a laser beam there, the affected part is cooled with an aqueous solution while causing a heat change (transpiration) in the living body. Furthermore, the steam generated by the heat change is sucked from the inner cylinder and guided to the outside of the body to prevent an accident due to a rapid pressure increase in the tissue.

In the present invention, indocyanine green (hereinafter referred to as “ICG”) is used as a medium for absorbing laser light. ICG is a safe drug that is used for liver function tests and circulatory function tests and has few serious side effects such as shock. ICG rapidly binds to human serum protein α ₁ lipoprotein, is optically stabilized, and the maximum absorption starts immediately from 785 nm when dissolved in an aqueous solution by adding patient's blood to the ICG aqueous solution. Shifts to 805 nm and stabilizes.

  A semiconductor laser is used as a light source of the laser oscillator. The oscillation wavelength is 810 ± 10 nm, which is almost the same as the maximum absorption wavelength of the human serum-added IGC aqueous solution. Therefore, when the human serum-added IGC aqueous solution is used, the laser beam is absorbed to the maximum extent by the IGC molecules, and the thermal action on the living soft tissue is maximized.

  It is said that white-toned living tissue is poorly absorbed by laser light and, therefore, has a poor thermal effect. However, if IGC molecules are present on the tissue surface to be evaporated, the laser light is efficiently absorbed. . The living tissue is the same as the burning fuel, the temperature rises to 300 ° C. or higher, and the thermal effect increases. By interposing the ICG aqueous solution in this way, it is possible to overcome the difference in thermal action due to the difference in the absorption rate of the laser light due to the color tone of the living tissue.

  Next, the function of each member constituting the laser treatment apparatus 1 will be described. The puncture needle 1 is used for irradiating the affected tissue with laser light and injecting an aqueous solution of a laser light absorbing medium into the affected tissue, and is composed of three members 6, 7 and 8, as shown in FIG. ing. When irradiating the affected tissue with laser light, the second member 7 and the third member 8 are used in an integrated state as shown in FIG.

  The laser oscillator 2 emits laser light. A semiconductor laser is used as a light source, and the emitted laser light is applied to the affected tissue through a light guide fiber 21. The laser beam is not continuously irradiated, but is repeatedly irradiated and paused at intervals of 0.5 seconds. An abnormal temperature rise can be prevented by cooling the portion and the transpiration cavity whose temperature has been increased by the irradiation of the laser light with the ICG aqueous solution during the pause. As the fiber 21, a flexible silica cladding bare fiber having a 400 μm or 600 μm core is used.

  The aqueous solution injector 3 is generally called a syringe pump, and sends out a fixed amount of an aqueous solution of a laser light absorbing medium per unit time. As described above, in this embodiment, ICG is used for the laser light absorbing medium. The ICG aqueous solution delivered from the aqueous solution injector 3 to the puncture needle 1 through the tube 31 is injected into the affected tissue through the gap between the inner cylinder 81 and the outer cylinder 71 (see FIG. 2) of the puncture needle 1.

  The vapor aspirator 4 sucks and discharges the vapor of the living tissue evaporated by the laser light through the hollow portion of the inner cylinder 81 (see FIG. 2) of the puncture needle 1 and the tube 41 and discharges it outside the body. An internal pump (not shown) is incorporated.

  The controller 5 controls operations of the laser oscillator 2, the pump (not shown) of the aqueous solution injector 3, and the pump (not shown) of the vapor suction device 4, and includes a microprocessor, a memory, and the like. An operator drives or stops each member by turning on / off a switch or the like attached to a panel (not shown) of the controller 5.

<Configuration and function of puncture needle>
Next, the configuration and function of the puncture needle 1 will be described with reference to FIGS. 2, 3, and 4. 2A to 2C are plan views of the three members 6, 7, and 8 constituting the puncture needle 1. 3 is a cross-sectional view of the second member 7, and FIG. 4 is a cross-sectional view of the third member 8.

  As described above, the puncture needle 1 is composed of three members 6, 7 and 8, and by combining two of these members, puncture of the puncture needle 1 into the affected tissue, laser irradiation, and suction of transpiration vapors Do each work up to.

  The first member 6 has a gripping grip 62 attached to the rear end of a long puncture needle 61 and is used when the puncture needle 1 is punctured into an affected tissue. The needle 61 is made of a rust-resistant stainless alloy. On the other hand, the grip 62 is made of a synthetic resin.

  The second member 7 is formed by attaching the gripping portion 72 and the third member 8 to the rear portion of the hollow outer cylinder 71, and punctures the living body with the puncture needle 1 as will be described later. In addition, it is used integrally with the first member 6. When puncturing, the needle 61 of the first member 6 is inserted into the hollow portion of the outer cylinder 71.

  The outer cylinder 71 is made of a transparent and flexible synthetic resin, and the distal end portion 74 is tapered so as to weaken the resistance at the time of puncture and so as not to damage the blood vessel of the tissue. On the other hand, the gripping portion 72 and the coupling portion 73 are made of a hard synthetic resin because they require a certain degree of strength.

  As shown in the cross-sectional view of FIG. 3, a hollow grip 72 is attached to the rear end of the outer cylinder 71, and a hollow coupling used for connecting the third member 8 to the rear of the grip 72 is further provided. The portion 73 is attached integrally with the grip portion 72. The inner diameter of the coupling portion 73 is larger than the inner diameter of the outer cylinder 71, and a single male screw 73a is formed on the outer periphery of the end portion. The space between the outer cylinder 71 and the grip portion 72 is sealed with a sealing material 75.

  The third member 8 has a hollow adapter 82 attached to the rear portion of the inner cylinder 81. The inner cylinder 81 is preferably manufactured using a metal pipe from the viewpoint of strength. In the present embodiment, the inner cylinder 81 is manufactured using a stainless steel pipe. The diameter of the inner cylinder 81 is smaller than the diameter of the outer cylinder 71 of the second member 7.

  The adapter 82 includes a coupling portion 83 used for connection with the second member 7, a fiber fixing knob 84 for fixing the fiber 21 to the adapter 82, and a hole for guiding the fiber 21 to the hollow portion of the inner cylinder 81. A cap 85, an aqueous solution injection hole 86 for supplying an ICG aqueous solution to the affected tissue, and a vapor discharge hole 87 for discharging vaporized vapor generated by laser light irradiation to the outside of the body.

  FIG. 4 shows a cross section of the third member 8. A rear portion of the inner cylinder 81 is inserted into a hollow portion of the adapter main body 82a made of a transparent synthetic resin, and an end thereof is fixed to the adapter main body 82a via a pipe 82b and a sealing material 82c.

  The fiber fixing knob 84 is a combination of two cylindrical members (84a, 84b) having different diameters. A female screw is formed on the inner circumference of the knob section 84a having a larger diameter, and the outer circumference of the rear end portion of the adapter body 82a. Screwed into the male screw formed in The rear end portion of the small-diameter cylindrical member 84b of the fiber fixing knob 84 is sealed with a cylindrical cap 85 in which a fiber insertion hole 85a is formed at the center.

  The inner diameter of the rear portion of the adapter main body 82a is slightly larger than that of the front portion, and a metal ring 88 and a columnar fastening material 89 made of elastic resin are fitted therein. A hole through which the fiber 21 passes is formed at the center of the fastening material 89.

  When the fiber fixing knob 84 is rotated clockwise with the fiber passed through the hole of the fastening material 89, the fastening material 89 is pushed and compressed by the tip of the cylindrical member 84b, and the diameter of the hole is reduced. The fiber 21 is fixed to the fastening material 89.

  A hollow coupling portion 83 having a female screw 83a formed on the inner periphery is attached to the front portion of the adapter 82, and the male screw 73a formed on the outer periphery of the end of the coupling portion 73 of the second member 7 is connected to the female screw 83a. The second member 7 and the third member are integrated with each other.

  An aqueous solution injection hole 86 is formed in the front side surface of the hollow adapter body 82a, and the ICG aqueous solution supplied from the aqueous solution injector 3 passes through the gap between the hollow portion of the adapter body 82a and the inner cylinder 81, Furthermore, as will be described later, it is injected into the affected tissue through a gap between the outer cylinder 71 and the inner cylinder 81.

  A vapor discharge hole 87 is formed on the side surface of the middle part of the hollow adapter body 82a, and when the air in the hollow part of the adapter body 82a is sucked by the vapor suction device 4, the transpiration of the living tissue generated by the laser light irradiation The steam is discharged from the steam discharge hole 87 through the hollow part of the inner diameter 81 and the hollow part of the adapter main body 82a.

  As shown in FIG. 4, since the aqueous solution injection hole 86 and the vapor discharge hole 87 are separated by the inner cylinder 81 and the sealing material 82c, the aqueous solution injected from the aqueous solution injection hole 86 and the vapor discharge hole 87 are discharged. The transpirational steam that is produced will not mix.

  Further, as described above, the first, second and third members 6, 7, and 8 are manufactured using a stainless steel pipe and an integrally molded product of a synthetic resin, so that expensive materials are not required. The puncture needle 1 can be provided at a relatively low price.

<Configuration and function of three-way stopcock>
Although omitted in FIG. 1, a three-way cock 32 shown in FIG. 5 is attached to an intermediate portion of a tube 31 connecting the aqueous solution injector 3 and the puncture needle 1. The three-way stopcock 32 is used to form a liquid pool of ICG aqueous solution at the tip of the puncture needle 1 punctured in the affected tissue. A method for forming the liquid pool will be described in detail later with reference to FIG.

  As shown in FIG. 5, the three-way cock 32 includes a female luer part 32a, a male luer part 32b, a holder 32c, and a knob 32d. Tubes 31a and 31b are connected to the ends of the female luer portion 32a and male luer portion 32b, and a syringe 33 is attached to the end of the holder 32c. The syringe 33 is filled with an ICG aqueous solution.

  The knob 32d can be rotated 90 degrees around the direction perpendicular to the paper surface as indicated by the arrow, and is oriented in the vertical direction during laser treatment. The ICG aqueous solution supplied from the aqueous solution injector 3 through the tube 31a is supplied to the puncture needle 1 through the female luer part 32a, the male luer part 32b and the tube 31b of the three-way stopcock 32.

  Unlike FIG. 5, when the knob 32d faces the horizontal direction, the flow path connecting the female luer part 32a and the male luer part 32b is blocked, and the flow path connecting the holder 32c and the male luer part 32b is opened. When the operator pushes the plunger rod 33a in this state, the aqueous solution filled in the syringe 33 is supplied to the puncture needle 1 through the male luer part 32b and the tube 31b.

<Laser treatment procedure>
Next, with reference to FIG. 6 and FIG. 7, the procedure of the laser treatment by the laser treatment apparatus 1 is demonstrated. FIG. 6 shows the procedure of the first half of the laser treatment, and FIG. 7 shows the procedure of the second half of the laser treatment.

  First, the needle 61 of the first member 6 is inserted into the outer cylinder 71 of the second member, and the first member 6 and the second member 7 are integrated. As shown in FIG. 6A, in this state, the needle 61 is exposed from the tip of the outer cylinder 71. The needle 61 of the first member 6 and the second member 7 integrated in this way is punctured into the affected tissue of the living body 9.

  At the time of puncture, ultrasonic waves are radiated to the living body 9 using an ultrasonic diagnostic apparatus (not shown), and the position of the affected tissue and the position of the needle 61 are confirmed by the image displayed on the display of the diagnostic apparatus. Do.

  After the needle 61 reaches the affected tissue of the living body 9, as shown in FIG. 6B, the needle 61 of the first member 6 is removed from the outer cylinder 71 of the second member 7, and only the outer cylinder 71 is removed from the living body. Keep in 9.

  Next, as shown in FIG. 6C, the inner cylinder 81 of the third member 8 is inserted into the outer cylinder 71 of the punctured second member 7 and the coupling portion 73 of the second member 7. The male screw 73a is screwed into the female screw 83a of the coupling portion 83 of the third member 8, so that the second member 7 and the third member 8 are integrated. In this state, a part of the inner cylinder 81 is exposed from the tip of the outer cylinder 71, and the fiber fixing knob 84 is loosened.

  Next, as shown in FIG. 7A, the fiber 21 is inserted and advanced from the hole 85a of the cap 85 of the third member 8, and the tip of the fiber 21 is exposed from the tip of the inner cylinder 81. The fiber fixing knob 84 is rotated to fix the fiber 21 to the fastening material 89.

  Further, the tube 31 connected to the aqueous solution injector 3 is attached to the aqueous solution injection hole 86 of the adapter 82, and the three-way cock 32 is attached to the middle of the tube 31 (see FIG. 5). Similarly, the tube 41 connected to the steam suction device 4 is attached to the steam discharge hole 87. In this way, the preparation for laser treatment is completed.

  Next, as a pre-stage of laser treatment, as shown in FIG. 7A, a liquid reservoir 10 of ICG aqueous solution is formed in the living body 9 at the tip of the inner cylinder 71. Hereinafter, a method for forming the liquid reservoir 10 will be described.

  First, the pump of the aqueous solution injector 3 is operated to supply the ICG aqueous solution. As indicated by the arrows, the tube 31, the hollow portion of the aqueous solution suction hole 86 adapter body 82a, and the gap between the outer cylinder 71 and the inner cylinder 81 are removed. Fill with aqueous solution WS. In this state, the knob 32d of the three-way cock 32 is in a state orthogonal to the tube 31 (see FIG. 5), and the aqueous solution WS supplied from the aqueous solution injector 3 is supplied to the puncture needle 1 through the three-way cock 32. .

  If the supply of the aqueous solution WS is continued, as shown in FIG. 7A, the tube 31, the aqueous solution suction hole 86, the hollow portion of the adapter main body 82a, the outer cylinder 71 and the inner cylinder 81, and further the inner cylinder 81 The hollow portion and the hollow portion at the rear of the adapter main body 82a are filled with the aqueous solution WS. After confirming that the aqueous solution WS flows out of the steam exhaust hole 87, the tube 41 is temporarily clamped by closing a valve (not shown) attached to the intermediate portion.

  Next, in FIG. 5, the tube 31 is clamped by rotating the knob 32d of the three-way cock 32 and turning it in the left-right direction.

  In a state where the tubes 31 and 41 are clamped, 0.5 to 1 cc of the aqueous solution WS is injected from the syringe 33 into the tube 31b. As described above, in this state, since the tube 41 attached to the vapor discharge hole 87 is clamped, the aqueous solution WS injected into the tube 31b from the syringe 33 moves through the hollow portion of the inner cylinder 81. The liquid pool 10 is formed by remaining in the living body 9.

  As described above, when laser light is irradiated from the tip of the fiber 21 in the absence of the liquid reservoir 10, a part of the living tissue is burned while being in contact with the tip of the fiber 21, and the tip of the fiber 21 and the inner cylinder 81. Will be damaged and hinder laser irradiation.

  On the other hand, when the laser beam is irradiated with the liquid reservoir 10 formed at the tip of the inner cylinder 81, the tip of the fiber 21 does not contact the tissue, and the living tissue near the tip of the fiber 21 evaporates and the transpiration cavity. 11 is formed. As a result, it is possible to prevent the tip of the fiber 21 from coming into contact with the living tissue by the formed evaporation space 11 even after the clamping of the tubes 31 and 41 is stopped and the supply of the aqueous solution is started.

  In the state shown in FIG. 7A, after the transpiration cavity 11 is formed in the affected tissue, the clamps of the tubes 31 and 41 are released, and the state moves to the state shown in FIG. 7B. Specifically, when the aqueous solution WS is supplied from the aqueous solution injector 3 to the aqueous solution injection hole 86 of the adapter 82 through the tube 31, the aqueous solution WS is injected into the affected tissue through the gap between the inner cylinder 81 and the outer cylinder 71. If irradiation with the laser beam LL is continued while injecting the aqueous solution WS, the affected tissue is evaporated and the volume of the evaporation space 11 is increased.

  When the internal pressure of the transpiration cavity 11 due to the transpiration vapor rises to 15 cm water column pressure or more, the pump of the vapor suction device 4 is driven to suck the air in the tube 41. The vapor ST of the living tissue evaporated by the irradiation of the laser beam LL is sucked through the hollow portion of the inner cylinder 81, the rear hollow portion of the adapter main body 82a, the vapor suction hole 87 and the tube 41 as shown by the arrows, To be discharged. At this time, the vapor ST is cooled and liquefied by the aqueous solution WS flowing through the gap between the inner cylinder 81 and the outer cylinder 71, thereby preventing explosion in the tissue.

  After the irradiation of the affected part tissue with the laser beam LL, the integrated second member 7 and third member 8 are removed from the affected part tissue, and the laser treatment is finished. The puncture needle 1 (the first member 6, the second member 7, and the third member 8) used for the treatment is discarded after appropriate processing.

  As described above, in the laser treatment apparatus according to the present invention, by combining two members of the puncture needle 1 composed of three members, puncturing the living body, injecting an aqueous solution into the affected tissue, The irradiation of the laser beam and the discharge of the vaporized vapor to the outside of the body can proceed smoothly.

  In addition, in the laser treatment apparatus of the present invention, since the three members discarded for each treatment can be provided at a relatively low price, the financial burden on the patient can be reduced.

  In the present embodiment, the male screw 73a is formed in the joint portion 73 of the second member 7, and the female screw 83a is formed in the joint portion 83 of the third member 8. However, the configuration of the joint portion is not limited to this. . Other configurations may be adopted as long as the second member 7 and the third member 8 can be reliably coupled.

  In the present embodiment, the semiconductor laser is used as the light source of the laser oscillator 2, but the present invention is not limited to this, and a carbon dioxide laser or an excimer laser having different oscillation wavelengths may be used.

  Similarly, in this embodiment, ICG is used as the laser light absorbing medium. However, when a laser other than a semiconductor laser is used as the light source of the laser oscillator 2, the laser light absorbing medium is changed according to the oscillation wavelength. Needless to say.

DESCRIPTION OF SYMBOLS 1 Puncture needle 2 Laser oscillator 3 Aqueous solution injector 4 Vapor suction device 5 Controller 6 1st member 7 2nd member 8 3rd member 9 Living body 10 Liquid reservoir 11 Transpiration cavity 31, 41 Tube 32 Three-way stopcock 33 Syringe 61 Needle 62 Grip 71 Outer cylinder 72 Grip part 73, 83 Coupling part 81 Inner cylinder 82 Adapter 84 Fiber fixing knob 85 Cap 86 Aqueous solution injection hole 87 Vapor discharge hole 88 Ring 89 Fastening material 100 Laser treatment device LL Laser beam ST Vapor WS Aqueous solution

Claims (6)

A puncture needle for puncturing a living body;
An aqueous solution injector for injecting an aqueous solution of a laser absorbing medium into the affected tissue using the puncture needle;
Using the puncture needle, a laser oscillator that irradiates laser light through a light guide fiber to the affected tissue into which the aqueous solution has been injected, and
Using the puncture needle, a vapor aspirator that discharges the vapor of living tissue evaporated by irradiation of the laser light to the outside of the body,
The puncture needle is composed of the following three members a, b and c ,
a. A first member having a gripping grip attached to a rear end portion of a metal needle having a sharp tip; b. A second member having a gripping portion attached to the outer periphery of the rear portion of the outer cylinder having a hollow portion through which the needle of the first member is inserted; c. Hollow adapter is attached to a rear end of the second inner cylinder diameter than the outer cylinder is smaller metallic member, the insertion hole of the light guide fiber in the adapter, for injecting the aqueous solution A third member provided with an aqueous solution injection hole and a steam discharge hole for discharging the steam
The inner cylinder of the third member is inserted into the hollow portion of the outer cylinder of the second member so that the second member and the third member are integrated, and the light guide fiber is 3 is inserted into the adapter of the member 3 and the hollow portion of the inner cylinder, the tip is exposed from the inner cylinder,
The aqueous solution injector and the aqueous solution injection hole of the third member are connected by a tube for supplying an aqueous solution, and a three-way stopcock is disposed at an intermediate portion of the tube,
The laser treatment apparatus , wherein the three-way cock holder is attached with a syringe for forming a pool of the aqueous solution in a living body in contact with the tip of the light guide fiber . When puncturing the puncture needle to the living body, the needle of the second of said first member to the hollow portion of the outer tube member is inserted, the first member and the second member is integrated is the laser treatment apparatus according to claim 1. The aqueous solution is injected into the affected tissue through a gap between the inner cylinder of the second member and the outer cylinder of the third member,
The steam, the third through the hollow portion of the inner cylinder member is discharged to the outside, the laser treatment apparatus according to claim 1.   4. The hollow portion of the adapter according to claim 1, wherein a portion communicating with the aqueous solution injection hole and a portion communicating with the vapor discharge hole are separated by a sealing material and the inner cylinder. Laser therapy device.   The coupling part for integrating a 2nd member and a 3rd member is each provided in the rear part of the holding part of the said 2nd member, and the front part of the adapter of the said 3rd member, respectively. The laser treatment apparatus according to any one of 1 to 4. 6. The laser according to claim 1, wherein the outer cylinder of the second member is made of a flexible synthetic resin, and the inner cylinder of the third member is made of a metallic pipe. Therapeutic device.

Images