Cautery devices and systems

Abstract

To provide a cauterization device that can uniformly cauterize a predetermined area of biological tissue.SOLUTION: A cauterization device for biological tissue comprises: a probe comprising a head part to be inserted into a living body, and for emitting light for cauterizing the biological tissue; and a long catheter for supporting the biological tissue by sandwiching the biological tissue between itself and the probe. The head part of the probe comprises: a first fixing tool; a second fixing tool; and an emission port arranged between the first fixing tool and the second fixing tool, and for emitting the light. The catheter comprises a third fixing tool for fixing the first fixing tool, and a fourth fixing tool for fixing the second fixing tool.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an ablation device and an ablation system. [Background technology]

[0002] There are known devices for cauterizing biological tissue by irradiating light. For example, the device described in Patent Document 1 can cauterize biological tissue by irradiating light from a light source to one end of a rod-shaped light guide and irradiating the biological tissue with light emitted from the other end. In addition, the catheter system described in Patent Document 2 includes an ablation catheter provided with multiple electrodes, and can cauterize biological tissue by applying ablation energy to the biological tissue through the multiple electrodes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Patent No. 6,530,919 [Patent Document 2] Patent No. 6301926 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when it is desired to uniformly cauterize a predetermined range of biological tissue, it is difficult to do so with the device described in Patent Document 1 or the system described in Patent Document 2. For example, when the thickness of a predetermined range of biological tissue to be cauterized varies from part to part, the light does not easily reach the inside of the thicker part compared to the other parts, and cauterization may not be possible. Also, the cauterization may not be sufficient because the cauterization temperature does not rise sufficiently due to the blood flowing in the blood vessels.

[0005] An object of the present invention is to provide an ablation device capable of uniformly cauterizing a predetermined area of ​​living tissue. [Means for solving the problem]

[0006] The invention for achieving the above object provides a biological tissue cauterization device including a probe having a head portion that is inserted into a living body and emits light for cauterizing biological tissue, and a long catheter that supports the biological tissue by sandwiching the biological tissue between the probe and the long catheter, wherein the head portion of the probe has a first fixture, a second fixture, and an emission port that is disposed between the first fixture and the second fixture and emits the light, the catheter has a third fixing device and a fourth fixing device, and in a state in which the biological tissue is sandwiched between the probe and the catheter, the positions of the first fixing device and the third fixing device can be fixed relative to each other, and the positions of the second fixing device and the fourth fixing device can be fixed relative to each other. The present invention relates to a cauterization device. Other features of the present invention will become apparent from the following description and drawings. Effect of the Invention

[0007] According to the present invention, a predetermined area of ​​living tissue can be uniformly cauterized. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram for explaining a configuration of a cauterization system according to a first embodiment. [Diagram 2] FIG. 2 is a diagram for explaining the configuration of the cauterization device of the first embodiment. [Diagram 3] FIG. 2 is a cross-sectional view for explaining the configuration of a probe according to the first embodiment. [Figure 4] FIG. 2 is a cross-sectional view for explaining the configuration of a probe according to the first embodiment. [Diagram 5] FIG. 2 is a cross-sectional view for explaining the configuration of a probe according to the first embodiment. [Figure 6] FIG. 2 is a cross-sectional view for explaining the configuration of the catheter of the first embodiment. [Figure 7] FIG. 4 is a diagram for explaining a method for aligning the cauterization device of the first embodiment. [Figure 8] FIG. 4 is a diagram for explaining a method for aligning the cauterization device of the first embodiment. [Figure 9] FIG. 4 is a diagram for explaining a method for aligning the cauterization device of the first embodiment. [Figure 10] FIG. 11 is a block diagram for explaining the configuration of a cauterization system according to a second embodiment. [Figure 11] FIG. 6 is a cross-sectional view for explaining the configuration of a catheter according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] First Embodiment ==Cauterization System== 1 is a block diagram for explaining the configuration of an ablation system 1 according to this embodiment. The ablation system 1 includes a light source device 2 and an ablation device 3.

[0010] [Light source device] The light source device 2 is a device that generates light for cauterizing biological tissue. The light source device 2 has a light source that generates light in a wavelength range that matches the light absorption / scattering characteristics of the tissue to be cauterized. Specifically, the light source may be a laser light source, an LED light source, a halogen lamp, a xenon lamp, or the like.

[0011] [Cautery device] The cauterization device 3 is a device that collects light from the light source device 2 and emits the light to living tissue. The emitted light cauterizes the living tissue. The cauterization device 3 includes a probe 30 and a catheter 31. The probe 30 and the catheter 31 will be described below with reference to Figs. 2 to 6. Fig. 2 is a diagram for explaining the configuration of the cauterization device 3 of this embodiment, Figs. 3 to 5 are cross-sectional views for explaining the configuration of the probe 30 of this embodiment, and Fig. 6 is a cross-sectional view for explaining the configuration of the catheter 31 of this embodiment. In the following description, an orthogonal coordinate system consisting of an x-axis, a y-axis, and a z-axis perpendicular to each other and shown in Figs. 2 to 6 is used.

[0012] (probe) The probe 30 has a head portion 300 and a light guiding portion 301 (FIGS. 2, 3 and 5).

[0013] Light guiding section 301 is a long member, such as an optical fiber, that propagates light from light source device 2. One end of light guiding section 301 is connected to light source device 2 (not shown). The other end of light guiding section 301 is connected to head section 300 (FIGS. 2 to 5). Light incident on one end of light guiding section 301 from light source device 2 propagates through light guiding section 301 and enters the inside of head section 300.

[0014] In the following description, one end of light guiding section 301 is referred to as a "tip portion of light guiding section 301." Also, a surface at the tip portion of light guiding section 301 from which light from light source device 2 exits is referred to as an "end surface 301a." In this embodiment, end surface 301a of light guiding section 301 is flat.

[0015] The head unit 300 is a member that is inserted into a living body and emits light for cauterizing a predetermined area of ​​biological tissue O (see FIG. 2). The head unit 300 of this embodiment has a central axis X and is substantially rotationally symmetric about the central axis X. In FIGS. 2 to 5, the head unit 300 is shown so that the central axis X is parallel to the x-axis.

[0016] The head portion 300 has a length direction in the direction of the central axis X and is cylindrical in shape having two ends spaced apart from each other in the direction of the central axis X. One end of the head portion 300 is closed.

[0017] One end of the head unit 300 is convex and has a semi-ellipsoid shape. An inlet 300a (described later) is provided at the other end of the head unit 300. The main body of the head unit 300 is cylindrical and rotationally symmetric with respect to the central axis X.

[0018] In the following description, the end of the head unit 300 that is closed is referred to as the "tip of the head unit 300." Additionally, the end where the inlet 300a, which will be described later, is provided is referred to as the "base end of the head unit 300."

[0019] The head portion 300 has an entrance 300a, an exit 300b, a first reflecting portion 300c, a first fixed fixture 32a, and a second fixed fixture 32b.

[0020] Incident port 300a is an opening provided in head unit 300. Head unit 300 and light guiding unit 301 are connected by inserting an end of light guiding unit 301 into incident port 300a. As a result, light emitted from end face 301a of light guiding unit 301 enters the inside of head unit 300.

[0021] In this embodiment, the shape of the entrance 300a is a circle having a predetermined radius. The entrance 300a is disposed such that the central axis X passes through the center of the entrance 300a. In this embodiment, the predetermined radius is equal to the radius of the light guiding section 301.

[0022] The emission outlet 300b is an opening provided on the side surface of the head unit 300. In this embodiment, the emission outlet 300b is provided on the side surface of the main body of the head unit 300. The emission outlet 300b emits light that has entered the inside of the head unit 300 to the outside. The light that has entered the inside of the head unit 300 is light from the light source device 2 that has been emitted from the end surface 301a of the light guide unit 301. In this embodiment, the shape of the emission outlet 300b is a rectangle having long sides parallel to the central axis X (FIG. 4).

[0023] The first reflecting portion 300c reflects light incident into the head portion 300. The first reflecting portion 300c is provided over the inner peripheral surface of the head portion 300 (FIGS. 3 and 5). The first reflecting portion 300c is formed of a material that reflects light. When the light generated by the light source device 2 is in the visible light wavelength range, metal materials such as silver (Ag) and aluminum (Al) are used as the light reflecting material. When the light generated by the light source device 2 is in the infrared light wavelength range, metal materials such as gold (Au) are used as the light reflecting material.

[0024] The light that enters the inside of the head unit 300 propagates while being repeatedly reflected at the first reflecting unit 300c. A part of the light propagating inside the head unit 300 reaches the exit port 300b and is emitted to the outside from the exit port 300b. The living tissue O is cauterized by the light emitted from the exit port 300b.

[0025] The first fixed member 32a is a member that is fixed to a first fixing member 33a of the catheter 31, which will be described later.

[0026] The first fixed member 32a is provided near the tip of the head portion 300. In this embodiment, the first fixed member 32a is annular. The first fixed member 32a is disposed on the outer circumferential surface of the head portion 300 so as to be rotationally symmetric with respect to the central axis X of the head portion 300.

[0027] In this embodiment, the material of the first fixed member 32a is a magnetic material. The magnetic material may be a paramagnetic material or a ferromagnetic material, and is selected according to the material of the first fixed member 33a described later. In this embodiment, the material of the first fixed member 32a is a paramagnetic material.

[0028] The second fixed member 32b is a member that is fixed to a second fixing member 33b of the catheter 31, which will be described later.

[0029] The second fixed member 32b is provided near the base end of the head portion 300. The second fixed member 32b has a rectangular parallelepiped shape.

[0030] In this embodiment, the material of the second fixed device 32b is a magnetic material. The magnetic material may be a paramagnetic material or a ferromagnetic material, and is selected according to the material of the second fixed device 33b described later. In this embodiment, the material of the second fixed device 32b is a ferromagnetic material having spontaneous magnetization. FIG. 2 and other figures show some of the magnetic field lines caused by the second fixed device 32b.

[0031] Here, the positional relationship between the light exit 300b, the first fixed device 32a, and the second fixed device 32b will be described. The light exit 300b is disposed between the first fixed device 32a and the second fixed device 32b (FIGS. 2 and 3). The light exit 300b and the second fixed device 32b are disposed so that their azimuth angles with respect to the central axis X are the same.

[0032] The above describes the probe 30 of this embodiment, but the above is merely an example and is not limited thereto. For example, the head unit 300 of this embodiment has a cylindrical part, but is not limited to a cylindrical part, and may have a polygonal prism part. In addition, the shape of the emission port 300b of this embodiment is rectangular, but is not limited thereto, and may be appropriately designed according to the range of the biological tissue to be cauterized. In addition, the number of emission ports 300b is not limited to one, and may be multiple.

[0033] (catheter) The catheter 31 has a main body portion 310 , a first fixture 33 a , a second fixture 33 b , and a second reflecting portion 311 .

[0034] The main body 310 is a long tubular member. The main body 310 is formed of a flexible resin material or the like. In this embodiment, the main body 310 is formed of a transparent material. Of the ends of the main body 310, the end that is inserted into the living body is referred to as the "tip end of the catheter 31," and the end that is held by the surgeon is referred to as the "base end of the catheter 31."

[0035] The first fixing member 33a is embedded in an opening at the tip of the main body 310. In this embodiment, First fixture 33a The material of the first fixed member 32a is a magnetic material. The magnetic material may be a paramagnetic material or a ferromagnetic material, but a magnetic material that is attracted to the first fixed member 32a is selected.

[0036] In this embodiment, the material of the first fixture 33a is a ferromagnetic material having spontaneous magnetization. Some of the magnetic field lines caused by the first fixture 33a are shown in Fig. 2 and other figures. As a result, the first fixture 33a and the first fixture 32a are attracted to each other by magnetic force, and the position of the first fixture 32a is fixed.

[0037] The second fixing device 33b is provided at a distance from the first fixing device 33a on the catheter 31. The distance between the first fixing device 33a and the second fixing device 33b is determined to be approximately equal to the distance between the first fixing device 32a and the second fixing device 32b.

[0038] The second fixing member 33b has an annular shape and is provided on the outer circumferential surface of the catheter 31. In this embodiment, Second Fixture 33b The material of the second fixture 33b is a magnetic material. The magnetic material may be a paramagnetic material or a ferromagnetic material, but a magnetic material that is attracted to the second fixture 32b is selected. In this embodiment, the material of the second fixture 33b is a paramagnetic material. As a result, the second fixture 33b attracts the second fixture 32b, which has spontaneous magnetization, by magnetic force, and the position of the second fixture 32b is fixed.

[0039] It should be noted that the terms "fixed device" and "fixer" may be interchangeable. In this specification, first fixed device 32a is an example of a "first fixing device," second fixed device 32b is an example of a "second fixing device," first fixing device 33a is an example of a "third fixing device," and second fixing device 33b is an example of a "fourth fixing device."

[0040] In this embodiment, the first fixed member 32a and the first fixing member 33a are magnetic. However, any means other than magnetic force may be used as long as it can fix the positions of the first fixed member 32a and the first fixing member 33a to each other. The same applies to the second fixed member 32b and the second fixing member 33b.

[0041] In the present embodiment, the first fixed member 32a is a paramagnetic material, and the first fixing member 33a is a ferromagnetic material. However, the present invention is not limited to this example as long as the first fixed member 32a and the first fixing member 33a are configured to attract each other by magnetic force.

[0042] For example, the first fixed member 32a may be a ferromagnetic material, and the first fixing member 33a may be a paramagnetic material. Alternatively, both the first fixed member 32a and the first fixing member 33a may be ferromagnetic materials. In this case, the orientations of the first fixed member 32a and the first fixing member 33a may be determined so that they attract each other. The same applies to the second fixed member 32b and the second fixing member 33b.

[0043] The second reflecting section 311 reflects the light emitted from the exit 300b and transmitted through the biological tissue O toward the biological tissue O. The second reflecting section 311 is disposed between the first fixing device 33a and the second fixing device 33b. Note that the second reflecting section 311 only needs to be provided at a position facing at least the exit 300b in a state in which the first fixing device 33a and the second fixing device 33b fix the positions of the first fixing device 32a and the second fixing device 32b, respectively (FIG. 2).

[0044] The second reflecting portion 311 of this embodiment is formed over the inner circumferential surface of the main body portion 310 in the range between the first fixing member 33a and the second fixing member 33b. The second reflecting portion 311 is formed of the same material as the first reflecting portion 300c. The second reflecting portion 311 may be formed not only on the inner circumferential surface of the main body portion 310, but also by filling the hollow portion of the main body portion 310 with the same material as the first reflecting portion 300c. In addition, when the main body portion 310 is formed of a material that blocks light, the second reflecting portion 311 may be formed over the inner circumferential surface of the main body portion 310.

[0045] ==About alignment== Cauterization of biological tissue O using the cauterization system 1 of this embodiment is performed in the state of the cauterization device 3 shown in Fig. 2. Hereinafter, the state of the cauterization device 3 shown in Fig. 2 will be referred to as an "aligned state." In addition, of the surfaces of the biological tissue O, the surface on which the head unit 300 is placed during cauterization will be referred to as the "front surface," and the surface on which the catheter is placed will be referred to as the "back surface." An example of a procedure for achieving the aligned state will be described with reference to Figs. 2 and 7 to 9.

[0046] First, the catheter 31 is inserted, for example, from the femoral artery and placed in the biological tissue O to be cauterized (for example, inside the left ventricle) (FIG. 7). At this time, the catheter 31 is placed so that the second reflecting part 311 faces the range of the biological tissue O to be cauterized.

[0047] Next, the probe 30 is inserted into the living body and placed in the living tissue O to be cauterized (for example, outside the left ventricle). Then, when the position of the first fixed member 32a of the head portion 300 of the probe 30 approaches the first fixing member 33a, the probe 30 receives an attractive force from the first fixing member 33a and is fixed to the first fixing member 33a (FIG. 8).

[0048] In this embodiment, both the first fixture 32a and the second fixture 33b are made of paramagnetic material and are not magnetized, so that the first fixture 32a will not be erroneously fixed to the second fixture 33b.

[0049] Next, the position of the second fixed member 32b of the head portion 300 of the probe 30 is fixed relative to the second fixing member 33b. Specifically, from the state shown in Fig. 8, the posture of the head portion 300 is changed while the position of the first fixing member 33a is fixed so that the central axis X of the head portion 300 is parallel to the surface of the biological tissue O (Fig. 9).

[0050] Next, the head unit 300 is rotated about the central axis X of the head unit 300 as the rotation axis until the second fixed device 32b moves to a position facing the second fixing device 33b. As a result, the position of the second fixed device 32b is fixed with respect to the second fixing device 33b.

[0051] In this embodiment, the first fixed member 32a is annular. Therefore, even if the head unit 300 rotates from the state shown in FIG. 9 around the central axis X, the first fixed member 32a and the first fixing member 33a do not come off each other and maintain the fixed state.

[0052] The above procedure results in the aligned state shown in Fig. 2. The state of the cauterization device 3 shown in Fig. 2 is a state in which the first fixed tool 32a is fixed to the first fixing tool 33a, and the second fixed tool 32b is fixed to the second fixing tool 33b. In other words, the head portion 300 and the catheter 31 are fixed to each other at two points with the biological tissue O sandwiched between them.

[0053] As described above, the emission outlet 300b and the second fixed device 32b are disposed so as to have the same azimuth angle with respect to the central axis X. Therefore, in an aligned state, the emission outlet 300b is located in the range of the biological tissue O to be cauterized. In other words, in an aligned state, the emission outlet 300b is naturally located in the range of the biological tissue O to be cauterized.

[0054] In this state, the living tissue O is cauterized by emitting light from the emission port 300b. Furthermore, in this state, the area of ​​the living tissue O to be cauterized becomes uniform in thickness by being sandwiched between the probe 30 and the catheter 31. This makes it possible to uniformly cauterize the area of ​​the living tissue O to be cauterized.

[0055] In the above example, the catheter 31 is placed at a predetermined position relative to the biological tissue O, and then the head portion 300 is aligned, but this is not limiting. Conversely, the head portion 300 may be placed at a predetermined position relative to the biological tissue O, and then the catheter 31 may be aligned.

[0056] <Second embodiment> 10 is a block diagram illustrating the configuration of an ablation system 4 of this embodiment. Compared with the first embodiment, the ablation system 4 of this embodiment further includes a control device 6. Furthermore, the ablation device 5 of this embodiment has a different configuration of a catheter 51.

[0057] (catheter) 11 is a cross-sectional view for explaining the configuration of the catheter 51 of this embodiment. The catheter 51 of this embodiment further includes an optical sensor 510. The optical sensor 510 detects the light emitted from the emission port 300b. The optical sensor 510 outputs a signal according to the illuminance of the detected light to the control device 6.

[0058] The optical sensor 510 is provided between the second reflecting portion 311 and the second fixing device 33b inside the hollow portion of the main body portion 310. The arrangement of the optical sensor 510 is not limited thereto, and may be any arrangement capable of detecting the light emitted from the emission port 300b.

[0059] [Control device] The control device 6 controls the illuminance of the light generated by the light source device 2 according to the output result of the illuminance of the light detected by the optical sensor 510. If the output result of the optical sensor 510 is lower than the preset illuminance, the control device 6 controls the light source device 2 to increase the illuminance of the light generated by the light source device 2. On the other hand, if the output result of the optical sensor 510 is higher than the preset illuminance, the control device 6 controls the light source device 2 to decrease the illuminance of the light generated by the light source device 2. This makes it possible to more uniformly cauterize the range of the biological tissue O to be cauterized.

[0060] <Third embodiment> The cauterization system of this embodiment is different from the second embodiment in the processing of the control device.

[0061] The control device of this embodiment controls the spectral characteristics of the light generated by the light source device 2 according to the output result of the spectral characteristics of the light detected by the optical sensor 510. Specifically, when the spectral characteristics of the light detected by the optical sensor 510 differ from preset spectral characteristics, the control device controls the light source device 2 to have the preset spectral characteristics.

[0062] For example, when the illuminance of a certain wavelength band of light detected by the optical sensor 510 is insufficient relative to a preset illuminance, the control device controls the light source device 2 to increase the illuminance of the light of the wavelength band where the illuminance is insufficient. On the other hand, when the illuminance of a certain wavelength band of light detected by the optical sensor 510 is excessive relative to the preset illuminance, the control device controls the light source device 2 to decrease the illuminance of the light of the wavelength band where the illuminance is excessive.

[0063] In this way, it is possible to irradiate biological tissue with light having optimal spectral characteristics by controlling the light source device 2. By using light having optimal spectral characteristics, it is possible to stabilize the cauterization temperature of the tissue and cauterize the tissue uniformly without scorching the tissue surface.

[0064] The above-mentioned embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. Furthermore, the present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof.

[0065] <Summary> As described above, in the cauterization system 1 of the first embodiment, the cauterization device 3 is a cauterization device 3 for biological tissue O including a probe 30 having a head portion 300 that is inserted into a living body and emits light for cauterizing the biological tissue O, and a long catheter 31 that supports the biological tissue O by sandwiching the biological tissue O between the probe 30, the head portion 300 of the probe 30 is disposed between the first fixed member 32a and the second fixed member 32b, and has an emission port 300b that emits light, and the catheter 31 has a first fixing member 33a that fixes the first fixing member 32a and a second fixing member 33b that fixes the second fixing member 32b. The same applies to the second embodiment.

[0066] According to this configuration, the biological tissue to be cauterized can be sandwiched between the probe 30 and the catheter 31. Therefore, even if the thickness of the range of the biological tissue O to be cauterized varies partially, the thickness of the biological tissue O to be cauterized is approximately uniform, and by sandwiching the biological tissue O, the tissue is compressed and the thickness of the tissue is reduced, which makes it easier for light from the probe to pass through. In this state, the cauterization device 3 irradiates the biological tissue O with light, so that the range of the biological tissue O to be cauterized can be cauterized uniformly and penetrating the cross section of the tissue.

[0067] In addition, the first fixed member 32a and First fixture 33a That is, they are attracted to each other by magnetic force. Second fixed device 32band second fixture 33b are attracted to each other by magnetic force. This makes it possible to reliably align the catheter inserted into the living body by the magnetic attraction force even if the position of the catheter is unknown.

[0068] The catheter 31 further includes a second reflecting portion 311 that is disposed between the first fixture 33a and the second fixture 33b and reflects the light emitted from the emission port 300b toward the biological tissue O. With this configuration, the light for cauterization can be irradiated from both sides of the biological tissue O. Therefore, when the thickness of the range of the biological tissue O to be cauterized differs in parts, a part that is thicker than other parts can be cauterized. The second reaction The light from the irradiated part 311 is reflected Living By returning to the body tissue, the amount of light inside the living tissue increases, which improves irradiation efficiency and allows the living tissue O to be cauterized more uniformly in the thickness direction.

[0069] In the ablation system 4 of the second embodiment, the catheter 51 further includes an optical sensor 510 that detects the light emitted from the emission port 300b. With this configuration, the illuminance of the light emitted from the emission port 300b can be adjusted based on the illuminance of the light output from the optical sensor 510 so that the illuminance of the light in the vicinity of the catheter 51 becomes a predetermined value. This allows the range of biological tissue O to be ablated to be ablated uniformly with an optimal amount of irradiated light, stabilizing the ablation temperature of the tissue and not scorching the tissue surface.

[0070] The cauterization system 4 of the second embodiment includes the cauterization device 5, the light source device 2 that generates light to be emitted from the emission port 300b, and the control device 6 that controls the illuminance of the light generated by the light source device 2 according to the output result of the illuminance of the light detected by the optical sensor 510. With this configuration, the illuminance of the light emitted from the emission port 300b can be automatically adjusted based on the illuminance of the light output from the optical sensor 510 so that the illuminance of the light in the vicinity of the catheter 51 becomes a predetermined value. This allows the range of the biological tissue O to be cauterized to be uniformly cauterized with an optimal amount of irradiation light, stabilizing the cauterization temperature of the tissue without scorching the tissue surface. Furthermore, the convenience of the cauterization system 4 is improved.

[0071] The cauterization system of the third embodiment includes the cauterization device 5, the light source device 2 that generates light to be emitted from the emission port 300b, and a control device that controls the spectral characteristics of the light generated by the light source device 2 according to the output result of the spectral characteristics of the light detected by the optical sensor 510. According to this configuration, the spectral characteristics of the light emitted from the emission port 300b can be automatically adjusted based on the spectral characteristics of the light output from the optical sensor 510 so that the amount of light according to the wavelength band in the vicinity of the catheter 51 becomes a predetermined value. Therefore, it is possible to irradiate the living tissue with light having optimal spectral characteristics. By using light having optimal spectral characteristics, it is possible to stabilize the cauterization temperature of the tissue and cauterize the tissue uniformly without scorching the tissue surface. [Explanation of symbols]

[0072] 1: Cautery system 2: Light source device 3: Cautery device 30: Probe 300: Head section 300a: Inlet 300b: Output port 300c: First reflector 301: Light guide section 301a: End face 31: Catheter 310: Main body 311: Second reflector 32a: First fixed device 32b: Second fixed device 33a: First Fixture 33b: Second Fixture 4: Cautery system 5: Cautery device 51: Catheter 510: Optical sensor 6: Control device

Claims

1. a probe that is inserted into a living body and has a head portion that emits light for cauterizing living tissue; a long catheter that supports the biological tissue by sandwiching the biological tissue between the catheter and the probe; A biological tissue cauterization device comprising: the head portion of the probe has a first fixture, a second fixture, and an exit port that is disposed between the first fixture and the second fixture and that emits the light; the catheter has a third fastener and a fourth fastener; With the biological tissue sandwiched between the probe and the catheter, The positions of the first fixture and the third fixture can be fixed relative to each other, The positions of the second fixture and the fourth fixture can be fixed relative to each other. Cautery device.

2. The first fixture and the third fixture are attracted to each other by a magnetic force, and the second fixture and the fourth fixture are attracted to each other by a magnetic force. The ablation device of claim 1 .

3. The catheter further includes a reflecting portion disposed between the third fixing device and the fourth fixing device, the reflecting portion reflecting the light emitted from the emission port toward the biological tissue.

3. An ablation device according to claim 1 or 2.

4. The catheter further includes an optical sensor for detecting the light emitted from the emission port. The cauterization device according to any one of claims 1 to 3.

5. The cauterization device according to claim 4 ; a light source device that generates light to be emitted from the light exit; a control device that controls the illuminance of the light generated by the light source device in response to the illuminance of the light detected by the optical sensor; A biological tissue ablation system comprising:

6. The cauterization device according to claim 4 ; a light source device that generates light to be emitted from the light exit; a control device that controls the spectral characteristics of light generated by the light source device in response to the spectral characteristics of the light detected by the optical sensor; A biological tissue ablation system comprising:

Images