JP2000245740A - Treating tool for enoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To brightly illuminate the inside of a body cavity and a lesion in a treating tool such as a forceps and the like to be inserted into a forceps hole of an endoscope, by mounting an optical fiber along a flexible tube forming an insertion part of this treating tool, and applying the light transmitted from this optical fiber toward the lesion from a point of the flexible tube. SOLUTION: A number of pieces of optical fibers 56 are mounted along a flexible tube 30 forming an insertion part of a biopsy forceps, a basic end of the optical fiber 56 is connected to an light source device 64, and the light source device 64 is driven to apply the light from a point of the flexible tube 30 for brightening the inside of a body cavity and a lesion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to endoscopy of a forceps such as a biopsy forceps or a basket forceps inserted through a forceps hole of an endoscope, an electrosurgical treatment tool having a conductive linear body (snare), and the like. The present invention relates to a mirror treatment tool.

[0002]

2. Description of the Related Art An endoscopic treatment instrument such as a biopsy forceps is used to extract a tissue piece of an affected part after inserting an endoscope insertion part into a body cavity. That is, the treatment tool for an endoscope is inserted along a insertion portion from a forceps hole formed near a hand operation portion of the endoscope, and projects the forceps portion from a forceps channel formed at a distal end of the insertion portion. After the operation, the operator operates the operation unit of the treatment tool for an endoscope to collect a tissue piece.

[0003] During an operation using such an endoscope treatment tool, the operation has been performed using illumination light from a light guide inserted through the endoscope.

[0004]

However, in the conventional endoscope, if the affected part to be treated with the treatment tool comes out of the illumination area by the light guide of the endoscope,
There was a disadvantage that the affected area could not be illuminated and the procedure had to be interrupted. The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a treatment tool for an endoscope that can illuminate an affected part or the like even if it deviates from an illumination area by a light guide of an endoscope. I do.

[0005]

According to the present invention, there is provided a treatment tool for an endoscope which is inserted from a forceps hole of an endoscope to collect or treat a piece of tissue in a body cavity.
The flexible tube of the insertion portion of the endoscope treatment tool is provided with illumination means, and the illumination means is configured to emit illumination light from the distal end of the insertion portion of the endoscope treatment tool. Features.

According to the first aspect of the present invention, the flexible tube of the endoscope treatment instrument is provided with an illuminating means, and the illumination means irradiates illumination light from the distal end of the insertion portion of the endoscope treatment instrument. Therefore, even if the patient goes out of the illumination area of the endoscope by the light guide, the affected part or the like can be illuminated. According to the second aspect of the present invention, the flexible tube of the endoscope treatment instrument is configured in a double tube structure including an outer tube and an inner tube, and is provided in a gap between the outer tube and the inner tube. An illumination optical fiber was provided, and illumination light was emitted from the tip of the optical fiber. Thus, when an optical fiber is employed as the illumination means, an endoscope treatment tool having a structure capable of illumination without increasing the diameter of the flexible tube can be configured.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a treatment tool for an endoscope according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view of a biopsy forceps 10 to which the endoscopic treatment tool of the present invention is applied. The biopsy forceps 10 shown in FIG.
It comprises a hand operation unit 12 used by an operator during operation, an insertion unit 14 inserted into a forceps hole or the like of an endoscope, and a forceps unit 16.

The hand-operated portion 12 is provided with a shaft 18, and the shaft 18 is provided with an operating member 20 formed in a cylindrical shape.
Is slidably inserted into Flanges 22 and 24 are formed at the upper and lower ends of the operation element 20, and a screw (not shown) is provided in the operation element 20 in the radial direction. It is screwed into a slider (not shown) slidably disposed therein. Thereby, the operation element 20 and the slider are integrally connected. A rear end of the operation wire 26 is fixed to the slider, and a forceps section 16 is connected to a front end of the operation wire 26.

At the upper end of the shaft 18, a ring-shaped finger hook 28 is formed. The operator's thumb is inserted into the finger hook portion 28 during operation. In this state, the index finger and the middle finger are inserted between the flange 22 and the flange 24 of the operation element 20, and then the operation element 20 is pushed and pulled. It is supposed to be. When the operator 20 is operated,
The forceps section 16 connected via the slider and the operation wire 26 is operated.

The insertion portion 14 has an outer peripheral portion formed of a flexible tube 30 made of resin, and an upper base end portion 31 of the flexible tube 30 is fixed to a lower end portion of the shaft 18. ing. The operation wire 26 is entirely inserted into the inside of the flexible tube 30, and the flexible tube 3
The distal end of the zero is connected to a forceps portion main body 32 formed in a substantially cylindrical shape of the forceps portion 16.

As shown in FIG. 2, the forceps section 16 includes a connecting block 34 connected to the distal end of the operation wire 26. Links 38 and 40 are rotatably connected to the connecting block 34 via pins 36. It is supported by. This link 3
Forceps pieces 46 and 48 formed in a substantially U shape are connected to the other ends of the pins 8 and 40 via pins 42 and 44, respectively. The forceps pieces 46, 48 have pin 50 at their overlapping portions.
Is supported by the forceps section main body 32 through the shaft. Therefore, the forceps pieces 46 and 48 of the forceps section 16 are moved in opposite directions around the pin 50 in FIG. 2 when the operation element 20 in FIG. 1 is moved up and down and the operation wire 26 is pushed or pulled. , And are opened and closed.

The flexible tube 30 is shown in FIG.
As shown in FIG. 3, the outer tube 52 and the inner tube 54 have a double tube structure. Also, in the gap between the outer tube 52 and the inner tube 54, a number of illumination optical fibers 56, 56.
Are arranged along the axial direction. The base ends of these optical fibers 56, 56...
And is inserted into a flexible tube 58 connected to the lower flange 24 and connected to the light guide rod 62 of the light guide connector 60. When the light guide rod 62 is connected to the light source device 64,
The light from the light source device 64 is sent to the optical fibers 56 through the light guide rod 62. The lower flange 24 and the soft tube 58 are light-shielded so that the light of the optical fibers 56 does not leak outside.

.. Of the optical fibers 56, 56,.
A, 56A ... are the flexible tubes 3 as shown in FIG.
0 and is adhered to the back surface of a transparent member 66 such as glass. The gap between the outer tube 52 and the inner tube 54 is sealed by the transparent member 66. Therefore, from the light source device 64 to the optical fiber 5
The light transmitted to 6, 56,.
Are irradiated from the distal end portions of the flexible tube 30 via the transparent members 66 from the distal end portions 56A of the flexible tube 30.

By using the biopsy forceps 10 of the present embodiment configured as described above, the inside of the body cavity and the affected part can be made brighter together with the illumination light of the endoscope. In addition, since the biopsy forceps 10 faces the affected part 72, the biopsy forceps 10
By irradiating the light of the optical fibers 56, 56,... From the forceps section 16, the affected part can be intensively illuminated. Thus, the affected part or the like can be illuminated even if it is out of the illumination area by the light guide of the endoscope. In addition,
The light of the optical fibers 56 is emitted from the slit 32 formed in the forceps unit main body 32 and the like.

Further, according to the biopsy forceps 10, the flexible tube 30 is formed in a double tube structure including the outer tube 52 and the inner tube 54, and the flexible tube 30 is provided in the gap between the outer tube 52 and the inner tube 54. Since the optical fibers 56 are provided, the biopsy forceps 10 having a structure that can be illuminated without increasing the diameter of the flexible tube 30 can be configured.

FIG. 5 is an overall view of an electrosurgical treatment instrument 70 to which the endoscopic treatment instrument of the present invention is applied. The electrosurgical treatment instrument 70 shown in the figure includes a hand operating section 72 used by an operator during operation, an insertion section 74 inserted into a forceps hole of an endoscope,
And a pair of conductive linear bodies 76 and 78. The hand operation unit 72 is provided with a ring-shaped finger hook 80 and an operation element 82.

The insertion portion 72 has an outer peripheral portion formed of a flexible tube 84, and the pair of conductive linear bodies 76 and 78 extend from the distal end of the flexible tube 84.
Flexible tube 8 applied to this electrosurgical treatment instrument 70
4 also has a double tube structure composed of an outer tube 86 and an inner tube 88 (see FIG. 6), like the flexible tube 30 of the biopsy forceps 10 shown in FIG. Also, in the gap between the outer tube 86 and the inner tube 88, a number of illumination optical fibers 90, 90.
Are arranged along the axial direction. The base ends of these optical fibers 90, 90.
And is inserted into a flexible tube 94 connected to the lower flange 92 and connected to a light guide rod 98 of a light guide connector 96. When the light guide rod 98 is connected to the light source device 100, the light source device 100
From the optical fiber 9 via the light guide rod 98.
0, 90...

The tip portions 90 of the optical fibers 90, 90,...
A, 90A,... Extend to the distal end of the flexible tube 84 and are adhered to the back surface of a transparent member 102 such as glass. Therefore, the optical fiber 9
The light transmitted to the optical fibers 90, 90,.
Are irradiated from the distal end portions of the flexible tubes 84 through the transparent members 102 from the distal end portions 90A, 90A,.

When the electrosurgical treatment instrument 70 according to the present embodiment configured as described above is used, similarly to the biopsy forceps 10, the inside of the body cavity and the affected part are brightened together with the illumination light of the endoscope. be able to. FIG. 7 is an enlarged cross-sectional view showing a distal end of a contrast tube 110 which is one of the treatment tools for an endoscope. Similarly, the contrast tube 110 is the outer tube 1
Are arranged in a gap between the outer tube 112 and the inner tube 114, and a number of illumination optical fibers 116, 116,...
Are arranged. The contrast tube 110 can also emit light from the optical fibers 116, 116,.

FIG. 8 is an enlarged sectional view showing the distal end of a washing tube 120 which is one of the treatment tools for an endoscope.
Similarly, the washing tube 120 is configured in a double tube structure including an outer tube 122 and an inner tube 124,
A number of illumination optical fibers 126, 126,... Are disposed in the gap between the tubes 122, 124. This cleaning tube 120 also has optical fibers 126, 126,.
Light can be emitted from the tip.

The biopsy forceps 1 described in the present embodiment
0, the optical fiber is used as the illumination means in the electrosurgical treatment tool 70, the contrast tube 110, and the cleaning tube 120, but the invention is not limited to this, and a small illumination means such as an LED may be used. In this case, the LED may be provided at the distal end portion of the flexible tube, or the LED may be arranged at an intermediate portion of the flexible tube, and the light from this LED may be irradiated via the optical fiber. Good.

In the present embodiment, the biopsy forceps 10,
Although the example in which the illumination device is provided in the electrosurgical treatment tool 70, the contrast tube 110, and the washing tube 120 has been described,
It is not limited to this, but a spray tube for the dye solution,
The illuminating means of the present invention may be provided on a flexible tube of a treatment tool for an endoscope such as a coagulant, a papillotome, and an injection needle. Furthermore, in the present embodiment, the flexible tube is configured in a double tube structure, and the optical fiber is arranged between the outer tube and the inner tube. However, the present invention is not limited to this, and one resin tube may be used. The flexible tube of the present invention may be formed by insert molding an optical fiber.

Further, as shown in FIG.
By arranging the light-transmitting member 30 itself and applying the light-reflecting coats 132 on the outer and inner peripheral surfaces thereof, an illuminable treatment tool can be constituted.

[0024]

As described above, according to the endoscope treatment tool according to the present invention, the flexible tube of the endoscope treatment tool is provided with the illuminating means, and the illuminating means is used to treat the endoscope. Since the illumination light is emitted from the distal end of the tool, the affected part or the like can be illuminated even if it is out of the illumination area by the light guide of the endoscope.

According to the present invention, the flexible tube of the treatment tool for an endoscope is composed of an outer tube and an inner tube.
It has a heavy tube structure, and an illumination optical fiber is disposed in a gap between the outer tube and the inner tube, and the illumination light is emitted from the tip of the optical fiber, so that the diameter of the tube member is increased. Thus, an endoscope treatment tool that can be illuminated without performing the operation can be configured.

[Brief description of the drawings]

FIG. 1 is an overall view of a biopsy forceps of the present embodiment.

FIG. 2 is an enlarged view showing a forceps part structure and an illumination structure of the biopsy forceps shown in FIG. 1;

FIG. 3 shows 3-3 of a flexible tube of the biopsy forceps shown in FIG. 2;
Cross section along the line

FIG. 4 is a perspective view showing a state where light is emitted from the tip of the biopsy forceps shown in FIG. 1;

FIG. 5 is an overall view of the electrosurgical treatment tool according to the present embodiment.

FIG. 6 is an explanatory view showing an illumination structure of the electrosurgical treatment instrument shown in FIG. 5;

FIG. 7 is an enlarged cross-sectional view showing the distal end structure of the contrast tube according to the present embodiment.

FIG. 8 is an enlarged cross-sectional view showing the structure of the distal end portion of the cleaning tube according to the present embodiment.

FIG. 9 is an enlarged cross-sectional view showing an example in which the flexible tube itself is formed of a light-transmitting member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... biopsy forceps, 30 ... flexible tube, 52 ... outer tube, 54 ... inner tube, 56 ... optical fiber, 64 ... light source device, 70 ... electrosurgical treatment tool, 110 ... contrast tube, 120 ... washing tube

Claims (2)

[Claims] 1. An endoscope treatment tool which is inserted through a forceps hole of an endoscope to collect or treat a piece of tissue in a body cavity, wherein a flexible tube in an insertion portion of the endoscope treatment tool is provided. A treatment tool for an endoscope, characterized in that a lighting means is provided, and the lighting means irradiates illumination light from a distal end of an insertion portion of the treatment tool for an endoscope. 2. The flexible tube of the endoscope treatment tool,
An illumination optical fiber is provided in a gap between the outer tube and the inner tube, and a proximal end of the optical fiber is used as a light source. 2. The treatment tool for an endoscope according to claim 1, wherein the distal end of the optical fiber is connected to the distal end of the flexible tube.