KR102547764B1 - Light irradiation device for photodynamic - Google Patents

Abstract

The present invention relates to a photodynamic light irradiation device. This includes a multi-lumen tube including a tube body and a balloon in which the main passage is formed in the longitudinal direction; a fluid supply unit supplying fluid to the balloon; a guide tube provided with a tubular holder coupled to the rear end of the tube body and a needle guider coupled to the holder; an introduction tube coupled to the rear end of the holder; a handle supported by the inlet tube and reciprocating; A needle that is bitten and fixed to the inside of the handle; A light guiding unit having an optical fiber inserted into the needle and irradiating light supplied from the outside in a longitudinal direction to a front end portion is included.
The photodynamic light irradiation device of the present invention configured as described above lifts the peripheral organs covering the lesion and enables the light irradiation device toward the lesion to accurately reach the target point, thereby obtaining a good photodynamic treatment effect. In addition, the insertion depth of the needle and the optical fiber into the lesion can be precisely controlled. In addition, since a plurality of light passages open in the lateral direction are provided at the end of the needle, cancer tissue cells positioned around the needle in the lateral direction can be easily removed.

Description

Photodynamic light irradiation device {Light irradiation device for photodynamic}

The present invention relates to a light irradiation device for various cancer tissues, and more particularly, to a photodynamic light irradiation device with good accessibility to a lesion even when the lesion is located deep in an internal organ.

Recently proposed photodynamic therapy (PDT) is a treatment in which a photosensitizer that causes a chemical reaction to light is injected into a cancer tissue site, and light is applied to the cancer tissue to necroze cancer cells.

The injected photosensitizer is selectively accumulated in cancer cells over a certain period of time after injection. In this state, when a laser of a specific wavelength suitable for the photosensitizer is irradiated, the photosensitizer undergoes a chemical reaction with light and oxygen to activate the photosensitizer. Oxygen is created, and active oxygen selectively destroys only cancer cells.

Photodynamic therapy having this principle has the advantage of being less burdensome than surgical operation, chemical or radiation therapy, and preventing damage to surrounding tissues.

What is important in photodynamic therapy is to accurately irradiate laser light to cancer cells. For example, in a state where the patient is fixed, the laser light should be irradiated to the cancer tissue where the photosensitizer is accumulated for a long time without shaking. It is of no use if the laser light is not accurately irradiated to the cancer tissue area.

However, when the cancer tissue site to be treated is located deep in the body, it is not easy to irradiate the cancer tissue site with laser light. For example, in the case of the pancreas, it is covered by other organs, so in order to irradiate the pancreas with laser light, it is necessary to secure a passage by lifting the surrounding organs. It's a hassle.

As a background technology related to photodynamic therapy, Korean Patent Registration No. 10-1814280 (endoscopic probe for ultrasound photodynamic therapy) has been disclosed. The disclosed endoscopic probe includes: an endoscopic probe having a plurality of hollows formed along the longitudinal direction at the front end thereof; a first ultrasonic wave member integrally provided on the outer circumference of the distal end of the endoscope probe and emitting ultrasonic waves toward the affected area; A drug injection needle provided along one of the hollows of the endoscopic probe, appearing as the front end of the endoscopic probe by a user's selective manipulation, penetrating the affected area, and injecting a hypersensitizing agent into the affected area; an optical probe provided along one of the hollows of the endoscope probe and irradiating light of a corresponding wavelength to the affected part at the front end; It is provided along any one of the hollows of the endoscopic probe, is disposed around the optical probe, and is provided at the tip of the ultrasonic probe and the endoscope probe in which a second ultrasonic wave member provided at the tip emits ultrasonic waves to the affected part, and is provided by ultrasonic waves. It includes a display portion made of a metal piece having dimpling formed on a surface to be exposed, and the light probe includes an inner core for transmitting light received from the rear end to the front end along the longitudinal direction of the endoscope probe; an outer core coated outside the inner core in a form surrounding the inner core; A light emitting means provided at the rear end of the inner core to emit light to be irradiated to the affected area through the inner core, wherein the light emitting means includes a light source unit for emitting light of a specific band among laser, infrared, and ultraviolet rays; a division unit positioned on the light ray emitted from the light source unit to divide and transmit part of the light to the other side; It consists of a detecting unit that receives the divided light by the dividing unit and provides a source capable of determining the intensity of emitted light.

Korean Patent Registration No. 10-1814280 (endoscopic probe for ultrasound photodynamic therapy) Korean Patent Registration No. 10-2056103 (photodynamic therapy laser) Korean Patent Publication No. 10-0901798 (Laser fiber fixation device for photodynamic therapy)

The present invention has been created to solve the above problems, and enables a light irradiation device toward a lesion to accurately reach a target point, thereby photodynamically irradiating light to cancer tissue and accurately controlling the insertion depth of an optical fiber. It is an object of the present invention to provide a photodynamic light irradiation device capable of easily removing cancer tissue cells located on the lateral periphery of a needle.

The photodynamic light irradiation device of the present invention as a means of solving the problems for achieving the above object is a flexible member extending in the longitudinal direction, which is inserted into the body through a trocar, and a main passage of a certain diameter is formed in the longitudinal direction a multi-lumen tube including a tube body, a balloon provided at an end of the tube body and expanded by a fluid injected from the outside; a fluid supply unit supplying fluid to the balloon to inflate the balloon; A tubular holder coupled to the rear end of the tube body, a needle coupled to the holder, open to the rear through the holder, and extending in the longitudinal direction from the inside of the main passage, the extension end of which protrudes outside the front end of the tube body and provides an optical fiber passage a guide tube equipped with a guider; an introduction tube coupled to the holder and having an introduction passage formed in a straight line with the optical fiber passage; a handle that covers the inlet tube and is capable of reciprocating motion while being supported by the inlet tube; A hollow needle holder fixed to the inside of the handle and a part of which protrudes to the rear of the handle, fixed to the needle holder, opened to the rear through the needle holder, extended forward through the guide tube, and the distance the handle moved forward A needle having a hollow needle body advancing to the outside of the needle guider as much as possible; It is characterized in that it includes an optical fiber inserted into the needle and passing light provided from the outside in the longitudinal direction to irradiate the front end forward, and a light guiding unit having an adapter fixed to the rear end of the optical fiber and detachably coupled to the needle holder. .

In addition, a fluid passage through which the fluid delivered from the fluid supply unit passes is further formed inside the tube body, and a through hole, which is a passage through which the fluid in the fluid passage passes to the balloon, is provided in the tube body. .

In addition, the fluid supply unit; An injection tube detachably connected to the fluid passage and passing fluid, a cylinder coupled to an end of the injection tube and accommodating the fluid to be supplied, a syringe having a reciprocating piston inserted into the cylinder, and the injection tube It is installed on one side of the first check valve, which is closed when the piston of the syringe advances and opens when it retreats, and is located on the downstream side of the first check valve based on the syringe, and is opened when the piston of the syringe advances and retreats. It is characterized in that it includes a second check valve that is closed.

Further, a travel guide groove extending in the direction of the movement path of the handle is formed inside the handle, and a guide protrusion inserted into the travel guide groove and guiding the reciprocating motion of the handle is provided on the introduction tube.

In addition, the introduction tube; It is characterized in that it is further provided with an advance length adjusting means for determining the forward movement distance of the handle and adjusting the advance length of the needle distal end.

In addition, the advance length adjusting means; It is characterized in that it includes a sliding member supported by the introduction tube and movable along the longitudinal direction of the introduction tube, and a fixing means for fixing the position-adjusted sliding member to the introduction tube.

In addition, the introduction tube; It is characterized in that a stopper for limiting the maximum forward movement distance of the sliding member is further installed.

In addition, the sliding member takes the form of a ring surrounding the introduction tube, and the fixing means is screwed to the female screw portion located on one side of the sliding member, the female screw portion, and presses the introduction tube through the screw coupling to press the introduction tube. It is characterized in that it has a fixing screw for fixing the sliding member to.

In addition, it is characterized in that the outer circumferential surface of the inlet tube is marked with a scale indicating the separation distance of the sliding member from the handle.

In addition, at the end of the needle body, a plurality of light irradiation holes are formed that are open in the lateral direction of the needle body and allow the light output through the optical fiber to be simultaneously irradiated to the periphery of the needle body.

The photodynamic light irradiation device of the present invention configured as described above lifts the peripheral organs covering the lesion and enables the light irradiation device toward the lesion to accurately reach the target point, thereby obtaining a good photodynamic treatment effect.

In addition, the insertion depth of the needle and the optical fiber into the lesion can be precisely controlled.

In addition, since a plurality of light passages open in the lateral direction are provided at the end of the needle, cancer tissue cells positioned around the needle in the lateral direction can be easily removed.

1 is a perspective view of a photodynamic light irradiation device according to an embodiment of the present invention.
2 is a partially exploded perspective view of the light irradiation device shown in FIG. 1;
FIG. 3 is a cutaway perspective view of the light irradiation device of FIG. 1 .
4 is a view showing a state in which the balloon of the light irradiation device shown in FIG. 1 is inflated.
5 to 8 are exploded perspective views of a photodynamic light irradiation device according to an embodiment of the present invention.
9 is a cross-sectional view of a multi-lumen tube in a photodynamic light irradiation device according to an embodiment of the present invention.

Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

Since the light irradiation device of the present invention is provided with a balloon that expands while inserted into the body to open the organ, it can photodynamically detect cancer tissue in an organ covered by a neighboring organ, such as the pancreas. It allows the light to propagate efficiently.

The light irradiation device of the present invention is a flexible member extending in the longitudinal direction, which is inserted into the body through a trocar and has a main passage of a certain diameter formed therein in the longitudinal direction, a tube body provided at an end of the tube body a multi-lumen tube including a balloon that is inflated by fluid injected from the outside; a fluid supply unit supplying fluid to the balloon to inflate the balloon; A tubular holder coupled to the rear end of the tube body, a needle coupled to the holder, open to the rear through the holder, and extending in the longitudinal direction from the inside of the main passage, the extension end of which protrudes outside the front end of the tube body and provides an optical fiber passage a guide tube equipped with a guider; an introduction tube coupled to the holder and having an introduction passage formed in a straight line with the optical fiber passage; a handle that covers the inlet tube and is capable of reciprocating motion while being supported by the inlet tube; A hollow needle holder fixed to the inside of the handle and a part of which protrudes to the rear of the handle, fixed to the needle holder, opened to the rear through the needle holder, extended forward through the guide tube, and the distance the handle moved forward A needle having a hollow needle body advancing to the outside of the needle guider as much as possible; It has a basic configuration of an optical fiber inserted into the needle and passing light provided from the outside in the longitudinal direction to irradiate the front end forward, and an adapter fixed to the rear end of the optical fiber and detachably coupled to the needle holder.

1 is a perspective view of a photodynamic light irradiation device according to an embodiment of the present invention, and FIG. 2 is a partially exploded perspective view of the light irradiation device shown in FIG. 1 . In addition, FIG. 3 is a cutaway perspective view of the light irradiation device of FIG. 1, and FIG. 4 is a view showing a state in which a balloon of the light irradiation device shown in FIG. 1 is inflated. 5 to 8 are exploded perspective views of a photodynamic light irradiation device according to an embodiment of the present invention, and FIG. 9 is a cross-sectional view of a multi-lumen tube in the photodynamic light irradiation device according to an embodiment of the present invention. .

As shown, the photodynamic light irradiation device 10 according to the present embodiment includes a multi-lumen tube 20, a fluid supply unit, a guide tube 45, an introduction tube 41, a handle 55, and a needle 61 ), and a light guiding unit 65.

The multi-lumen tube 20 is a flexible member inserted into the body through the trocar 12, and has a tube body 21 and a balloon 23. The trocar 12 is a tool that is inserted into the hole after drilling a hole in the abdomen for laparoscopic surgery, and provides a passage through which various surgical instruments pass. Trocars can be of any size or shape.

The tube body 21 extends in the longitudinal direction and has a main passage 21a and a fluid passage 21c therein. The main passage 21a has a constant inner diameter and is open to the front and rear of the tube body. In this description, the direction in which the light irradiation device 10 enters the body is referred to as the front.

The main passage 21a accommodates the needle guider 45b of the guide tube 45, which will be described later. In addition, a needle body 61f is accommodated inside the needle guider 45b, and an optical fiber 65a is embedded in the inside of the needle body 61f. (See Fig. 9). In addition, an engaging screw portion 21f is provided at the rear end of the main passage 21a. The coupling screw portion 21f is a portion to which the holder 45a of the guide tube 45 is screwed. The holder 45a is detachable from the tube body 21.

The fluid passage 21c is a passage extending parallel to the main passage 21a, the front end is blocked by a cap 22, and the rear end has a coupler 21g. The coupler 21g is a hole to which the injection tube 31 of the fluid supply unit is detachably screwed.

A plurality of through holes 21d are formed on the side of the tube body 21 . The through hole 21d is a hole through which the fluid flowing into the fluid passage 21c from the fluid supply unit passes to the balloon 23 . The fluid passage 21c communicates with the balloon 23 through the through hole 21d.

The balloon 23 is made of elastically deformable medical silicone and wraps around a part of the tube body 21 and covers a portion where the fluid passage 21c is located. Bonding of the balloon 23 to the tube body 21 may be an adhesive method. The balloon 23 receives the fluid passing through the through hole 21d and expands as shown in FIG. 4 . The balloon 23, in a contracted state, enters between adjacent or attached organs and inflates to secure space by opening the organs.

The fluid supply unit serves to inject the fluid to be filled into the balloon 23 . The fluid supply unit includes an injection tube 31, a syringe 14, a first check valve 33, and a second check valve 34.

The injection tube 31 is a hollow pipe having a certain diameter and is detachably screwed to the coupler 21g. In order to take out the fluid inside the inflated balloon 23, the injection tube 32 can be separated from the coupler 21g.

The syringe 14 is a general syringe having a cylinder 14b and a piston 14c, and a spout 14a of the cylinder 14b is detachably coupled to the end of the injection tube 31. The syringe 14 serves to press the fluid supplied from the outside into the injection tube 31 . In addition, the fluid may be air or saline.

The first check valve 33 is installed on one side of the injection tube 31, and is closed when the piston 14c of the syringe advances in the direction of arrow a in FIG. 1 and opens when it retreats. When the piston 14c is retracted, negative pressure is formed in the cylinder 14b. At this time, the fluid flows in the direction of the arrow b through the first check valve 33 and fills the cylinder 14b.

The second check valve 34 is located on the downstream side of the first check valve with respect to the syringe 14. That is, it is located between the first check valve 33 and the tube body 21. The second check valve 34 opens when the piston 14c of the syringe advances in the direction of arrow a and closes when it retreats. As the piston 14c advances, the fluid ejected from the cylinder 14b is supplied to the fluid passage 21c through the second check valve 34.

As a result, by having the first and second check valves 33 and 44 performing the above operation, the piston 14c is repeatedly advanced and retreated, so that the fluid can be continuously pushed into the fluid passage 21c.

As shown in Fig. 9, the guide tube 45 has a holder 45a and a needle guider 45b. The holder 45a takes the shape of a hollow pipe and is screwed to the coupling screw portion 21f. As mentioned above, coupling and separation of the holder 45a to and from the coupling screw portion 21f is possible.

The needle guider 45b is a flexible hollow tube whose rear end is fixed inside the holder 45a and which extends straight in the longitudinal direction. The needle guider 45b is opened backward through the holder 45a and extends forward inside the main passage 21a. The extended end of the needle guider 45b, that is, the front end, protrudes out of the front end of the tube body 21. However, the length of the needle guider (45b) may be shortened so that it does not protrude outside the tube body (21).

The introduction tube 41 is a hollow pipe coupled to the holder 45a and providing an introduction passage 41a aligned with the optical fiber passage. A part of the holder 45a is inserted and fixed inside the introduction tube 41.

The introduction tube 41 is a linear member located outside the patient's body, and supports a handle 55 to be described later so as to reciprocate in the direction of the arrow e and in the opposite direction. A stopper 53 is fixed to the front end of the inlet tube 41 . The stopper 53 limits the movement of the sliding ring 51 in the direction indicated by the arrow g. The sliding ring 51 moving in the direction of the arrow g is caught by the stopper 53 and cannot move any further. The stopper 53 limits the maximum forward movement distance of the sliding ring 51 .

In addition, an advance length adjusting means is installed between the stopper 53 and the handle 55. The advance length adjusting means determines the forward movement distance of the handle 55 and serves to adjust the advance length of the needle distal end. That is, the maximum movement distance of the handle 55 in the direction of the arrow e is limited.

The advance length adjusting means includes a sliding member and a fixing means. The sliding member is supported by the introduction tube 41 and is movable along the longitudinal direction of the introduction tube, and may be implemented as a ring-type sliding ring 51 shown in FIG. 1 . The sliding ring 51 is a ring-shaped member surrounding the introduction tube 41 and is capable of sliding in the longitudinal direction of the introduction tube 41 .

In addition, a display hole 51a is formed on one side of the sliding ring 51 . The display hole 51a is a through hole through which the scale marked on the scale portion 41c is projected to the outside. In addition, a female screw portion 51b is further formed on the sliding ring 51 . The female screw portion 51b is a passage in which a female screw thread is formed and is screwed into a fixing screw 51d.

The female screw portion 51b and the fixing screw 51d serve as fixing means for fixing the sliding ring 51 whose position is adjusted in place. When the fixing screw 51d is tightened after locating the sliding ring 51 at a required position, the fixing screw 51d is screwed into the female threaded portion and the sliding ring for the inlet tube 41 is pressed by pressing the inlet tube through the screw coupling. (51) remains bound.

A scale portion 41c is located on the outer circumferential surface of the introduction tube 41 . The scale portion 41c represents the distance between the sliding ring 51 and the handle 50. The handle 50 moving in the direction of the arrow e is movable only to the sliding ring 51 .

When the sliding ring 51 is moved toward the handle 55 (referring to the scale marked on the scale 41c), the distance that the handle 55 can move is shortened that much. Since the handle is connected to the needle 61 to be described later, the advance distance of the needle 61 in the direction of arrow k in FIG. 7 is also shortened. The advance distance of the needle 61 in the direction of the arrow k is also the depth of the needle inserted into the internal organ. The advance distance may be 1 cm to 4 cm.

In addition, a guide ring 42 is fitted to the rear end of the introduction tube 41. The guide ring 42 is a ring-shaped member detachably fitted to the introduction tube 41 and has guide protrusions 42a at upper and lower portions in the vertical direction. The guide protrusion 42a prevents rotation of the handle 55 and guides the linear motion while being inserted into the travel guide groove 55c provided inside the handle piece 55a. The handle 55 reciprocates while being supported by the guide protrusion 42a.

The handle 55 is formed by assembling two handle pieces 55a. The handle 55 is formed by connecting the handle piece 55a with the introduction tube 41 interposed therebetween. A ring engaging portion 55f is provided at the front end of the handle piece 55a. The ring coupling portion 55f is a groove into which the coupling ring 55g is fitted. The coupling ring 55g prevents the handle piece 55a from opening. In addition, a rear end groove 55e is formed at the rear end of the handle piece 55a. The rear end groove 55e provides a hole through which the needle holder 63 passes when the handle piece 55a is assembled.

In addition, fitting grooves 55d are further formed inside each handle piece 55a. The fitting groove 55d is a groove for receiving and fixing the hooking jaw 63a of the needle holder 63. When the handle piece 55a is coupled with the needle holder 63 therebetween, the needle holder 63 is bitten and fixed to the handle piece 55a, and the coupling screw portion 63c of the needle holder 63 is shown in FIG. As described above, the handle 55 is exposed to the rear.

Meanwhile, the needle 61 and the light guiding unit 65 have the configuration shown in FIG. 5 .

The needle 61 is composed of a needle holder 63 and a needle body 61f. As described above, the needle holder 63 is a plastic part that is bitten and fixed to the rear end groove 55e of the handle piece 55a, and opens the needle body 61f to the rear. The coupling screw portion 63c provided at the rear end of the needle holder 63 is a portion screwed to the adapter 65b. Of course, a female screw part (not shown) coupled to the coupling screw part 63c is provided inside the adapter 65b.

The needle body 61f is a linear member extending forward from the inside of the needle guider 45b and provides an optical fiber passage 61a. The optical fiber passage 61a is a space for accommodating the optical fiber 65a. An obliquely inclined tip blade portion (61b in Fig. 7) is formed at the tip of the needle body 61f. The tip blade is the same as that of a general injection needle.

The tip blade portion 61b waits inside the needle guider 45b as shown in FIG. 3 when the handle 55 is maximally retracted. Further, as the handle 55 moves in the direction of arrow f in FIG. 1, it advances in the direction of arrow k by the distance the handle moves.

In addition, a number of light irradiation holes 61e are formed in the needle body 61f. The light irradiation hole 61e is a hole through which the light output from the optical fiber 65a accommodated in the optical fiber passage 61a passes. A part of the light output from the end of the optical fiber 65a escapes to some extent in the lateral direction through the light irradiation hole 61e.

In some cases, a biopsy function for biopsy of a lesion may be added to the distal end of the needle body 61f.

The light guiding unit 65 is composed of an optical fiber 65a and an adapter 65b. The optical fiber 65a is inserted into the needle body 61f and passes light supplied from the outside in the longitudinal direction to irradiate the front end portion forward. Light provided from the outside may be laser light, ultraviolet light, or infrared light. The rear end of the optical fiber 65a is opened to the rear of the adapter 65b so that light can be received and irradiated to the front end.

As the laser light, a diode laser (630 nm) may be used, and a 400 μm to 800 μm glass optical fiber (GOF) may be used as the optical fiber.

As shown in FIG. 2, the adapter 65b is a disc-shaped part screwed to the needle holder 63 protruding from the rear of the handle 55. Of course, coupling or separation of the adapter 65b to the needle holder 63 is possible.

The operation of the light irradiation device having the above configuration is as follows.

First, a medical imaging device is used to determine the location of cancer cells in the patient's body. If the cancer cells are located, a hole is drilled in the abdomen and a trocar (12) is inserted. Necessary tools, such as an endoscope, are inserted through the trocar 12, and the necessary treatment is first performed, and then a photosensitizer is injected.

When the injection of the photosensitizer is completed, the light irradiation device 10 is moved away from the lumen tube 20 into the body through the trocar. At this time, the light guiding unit 65 and the syringe 14 may be in a missing state. Also, the handle 55 is in a fully retracted state.

In addition, when approaching the front end of the multi-lumen tube 20 to the target point, when the access path is covered by organs, the syringe 14 is connected to inflate the balloon 23. The balloon 23 is inflated between adjacent organs to open the organs.

If the front end of the multi-lumen tube 20 has reached the lesion through the above process, insert the light guide part 65 and connect the adapter 65b to the needle holder 63, and then move the handle 55 forward to move the needle body ( 61f) is stabbed. At this time, the maximum advance depth of the needle body 61f should be set in advance by the sliding ring 51 and the fixing screw 51d.

After the needle body 61f is inserted into the tissue of the lesion, a light generating unit (not shown) is connected to the adapter 65b, and light is applied through an optical fiber. The supplied light, after passing through the optical fiber 65a, spreads to the periphery through the direction of the tip blade 61b of the needle body 61f and the light irradiation hole 61e, destroying cancer cells. If the above process is completed, the fluid supply unit 30 is separated, the balloon is contracted, and the multi-lumen tube 20 is taken out, and then follow-up measures are continued.

In the above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications are possible by those skilled in the art within the scope of the technical idea of the present invention.

10: light irradiation device 12: trocar 14: syringe
14a: snout 14b: cylinder 14c: piston
20: multi-lumen tube 21: tube body 21a: main passage
21c: fluid passage 21d: through hole 21f: coupling screw
21g: coupler 22: cap 23: balloon
30: fluid supply unit 31: injection tube 33: first check valve
34: second check valve 41: inlet tube 41a: inlet passage
41c: scale portion 42: guide ring 42a: guide protrusion
45: guide tube 45a: holder 45b: needle guider
51: sliding ring 51a: display hole 51b: female thread
51d: fixing screw 53: stopper 55: handle
55a: handle side 55c: driving guide groove 55d: fitting groove
55e: rear end groove 55f: ring coupling portion 55g: coupling ring
61: needle 61a: optical fiber passage 61b: tip blade
61e: light irradiation hole 61f: needle body 63: needle holder
63a: locking jaw part 63c: coupling screw part 65: light induction part
65a: optical fiber 65b: adapter

Claims (10)

A flexible member extending in the longitudinal direction, inserted into the body through a trocar, and having a main passage of a certain diameter formed therein in the longitudinal direction, a tube body provided at an end of the tube body and expanded by a fluid injected from the outside. A multi-lumen tube containing a balloon to do;
a fluid supply unit supplying fluid to the balloon to inflate the balloon;
A tubular holder coupled to the rear end of the tube body, a needle coupled to the holder, open to the rear through the holder, and extending in the longitudinal direction from the inside of the main passage, the extension end of which protrudes outside the front end of the tube body and provides an optical fiber passage a guide tube equipped with a guider;
an introduction tube coupled to the holder and having an introduction passage formed in a straight line with the optical fiber passage;
a handle that covers the inlet tube and is capable of reciprocating motion while being supported by the inlet tube;
A hollow needle holder fixed to the inside of the handle and a part of which protrudes to the rear of the handle, fixed to the needle holder, opened to the rear through the needle holder, extended forward through the guide tube, and the distance the handle moved forward A needle having a hollow needle body advancing to the outside of the needle guider as much as possible;
An optical fiber inserted into the needle and passing light provided from the outside in the longitudinal direction to irradiate the front end forward, and a light guiding unit having an adapter fixed to the rear end of the optical fiber and detachably coupled to the needle holder. Photodynamic light irradiation device. According to claim 1,
Inside the tube body, a fluid passage through which the fluid delivered from the fluid supply unit passes is further formed,
The photodynamic light irradiation device, characterized in that the tube body is provided with a through hole, which is a passage through which the fluid in the fluid passage passes to the balloon. According to claim 2,
The fluid supply unit;
An injection tube detachably connected to the fluid passage and passing the fluid;
A cylinder coupled to the end of the injection tube and accommodating the fluid to be supplied, a syringe having a piston inserted into the cylinder and reciprocating,
A first check valve installed on one side of the injection tube, closed when the piston of the syringe moves forward and opened when it moves backward;
A photodynamic light irradiation device comprising a second check valve located downstream of the first check valve based on the syringe and opened when the piston of the syringe moves forward and closed when the piston moves backward. According to claim 1,
A travel guide groove extending in the direction of the movement path of the handle is formed inside the handle,
The introduction tube is inserted into the travel guide groove and provided with a guide protrusion for guiding the reciprocating motion of the handle. According to claim 1,
In the introduction tube;
The photodynamic light irradiation device according to claim 1 , further comprising an advancing length adjusting means for adjusting the advancing length of the tip of the needle by determining the forward movement distance of the handle. According to claim 5,
The advance length adjusting means;
a sliding member supported by the introduction tube and movable in a longitudinal direction of the introduction tube;
A photodynamic light irradiation device comprising a fixing means for fixing the position-adjusted sliding member to the introduction tube. According to claim 6,
In the introduction tube;
The photodynamic light irradiation device, characterized in that a stopper for limiting the maximum forward movement distance of the sliding member is further installed. According to claim 6 or 7,
The sliding member takes the form of a ring surrounding the introduction tube,
The fixing means is
A photodynamic light irradiation device characterized in that it has a female screw portion located on one side of the sliding member, and a fixing screw screwed into the female screw portion and fixing the sliding member to the introduction tube by pressing the introduction tube through the screw coupling. According to claim 8,
On the outer circumferential surface of the inlet tube,
An optical dynamic light irradiation device characterized in that a scale indicating the separation distance of the sliding member from the handle is marked. According to claim 1,
At the end of the needle body,
Photodynamic light irradiation device, characterized in that a plurality of light irradiation holes are formed that are open in the lateral direction of the needle body and allow the light output through the optical fiber to be simultaneously irradiated to the periphery of the needle body.

Images