JPH03106357A - Live detecting forceps with laser guide - Google Patents

Abstract

PURPOSE:To surely irradiate laser light to an aimed location further to surely collect a softened morbid tissue by radiating the laser light to a morbid part by a laser guide provided live detecting forceps, integrally provided in a laser guide, collecting the softened morbid tissues. CONSTITUTION:Excimer laser from the laser light emitting end of each of laser guides 6, 6 is radiated toward a morbid part, put between cups 9, 9, through holes 14, 14 of respective cups 9, 9, and when a morbid tissue is softened to a certain degree, the total unit of a laser guide-provided live detecting forceps 1 is pulled in with the softened morbid tissue torn off and collected. Thus by irradiating the excimer laser to the morbid part by the laser guide-provided live detecting forceps 1, with laser guides 6, 6 integrally provided thereon, and also collecting the softened morbid part, softening and collection of the morbid tissue can be simultaneously performed in a single process by introducing the laser guide-provided live detecting forceps 1 once to an objective location in the body cavity without taking a laser light radiating laser probe and a tissue collecting live detecting forceps successively in and out of the processing tool insertion channel of an endoscope.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a laser-guided biopsy forceps used for softening and recovering living tissue.

[Prior Art] Conventionally, a laser probe is used to irradiate excimer laser onto a lesion such as a tumor or polyp that has occurred in a body cavity to soften the lesion tissue, and the softened lesion tissue is then removed using biopsy forceps. The treatment is to recover and remove it using.

This is done by inserting a laser probe into the treatment instrument insertion channel of the endoscope, introducing its laser beam emitting end into the target area within the body cavity, and emitting excimer laser from the laser beam emitting end toward the lesion. , the diseased tissue was softened, the laser probe was removed from the treatment instrument insertion channel, and a biopsy forceps as disclosed in Japanese Utility Model Application Publication No. 164010/1988 was inserted instead, and the biopsy forceps softened the tissue. This is a procedure in which the diseased tissue is picked and collected.

[Problems to be Solved by the Invention] However, as described above, conventionally, in order to soften and recover diseased tissue within a body cavity, a laser probe is first inserted into the treatment instrument insertion channel of an endoscope to reach the diseased area. The laser probe and biopsy forceps are sequentially inserted and removed by irradiating the excimer laser, then removing the laser probe from the treatment instrument insertion channel, inserting the biopsy forceps instead, and collecting the softened diseased tissue. Is it done in two steps? This made the work cumbersome and difficult, and there was a problem that the aim of the excimer laser could vary when irradiating the lesion. In addition, when collecting softened diseased tissue, the aim was inconsistent, and biopsy of other normal tissue was accompanied by bleeding, and depending on the site, the diseased tissue was hard and difficult to collect.

The present invention has been made in view of the above circumstances, and its purpose is to provide biopsy forceps with a laser guide that can reliably irradiate a targeted area with laser light and reliably recover softened diseased tissue. It is about providing.

[Means and operations for solving the problem] In order to achieve the above object, the present invention provides a sheath, a forceps body that is inserted into the sheath and has a cup at its tip that can be opened and closed by an operation on the hand side, and the cup. a through hole provided in the cup, and a laser guide that is inserted into the sheath and has a laser beam emitting end facing the through hole of the cup, and is capable of emitting a laser beam toward the inside of the cup through the through hole. Be equipped.

Then, the forceps body of this laser-guided biopsy forceps is introduced into the target site in the body cavity, the lesion is sandwiched between the cups, and in that state, the laser beam is emitted into the cup via the laser guide. do. This softens and collects the diseased tissue.

[Example] Hereinafter, FIGS. 1 and 2 will be explained regarding the first example of the present invention.
This will be explained with reference to the figures.

FIG. 1 shows the tip of a laser-guided biopsy forceps 1 of the present invention, which includes a sheath 2 made of a long flexible multi-lumen tube, and a central hole 3 of the sheath 2.
The forceps body 4 inserted and fixed therein and the holes 5 on both sides of the sheath 2
, a pair of laser guides 6 inserted into the interiors of the laser guides 6 so as to be freely retractable.
It is structured from 6.

The forceps main body 4 has a double-opening biopsy section 7 at the tip of a flexible tube section (not shown). It is structured according to the following. That is, a pair of attachment pieces 8, 8 are provided protruding from the tip of the flexible tube portion, and these attachment pieces 8, 8 are fixed in a state of protruding from the tip of the sheath 2. Further, the proximal arm portions 10, 10 of a pair of cups 9, 9 are arranged between the mounting pieces 8, 8 in a state where they intersect with each other, and the intersecting portions are connected to the mounting pieces 8, 8 by means of fixing pins 11.
It is pivoted to 8. Further, as shown in FIG. 2, the tips of links 12, 12 are pivotally attached to the proximal ends of the proximal arm portions 10, 10 of each cup 9, 9 via movable pins 13, 13, and these links The proximal ends of 12, 12 are pivotally connected by another movable pin (not shown) to the tip of an operating wire (not shown) inserted into the flexible tube section. A pantograph mechanism is configured by the proximal arm portions 10, 10 and links 12, 12 of each cup 9, 9, and by pushing and pulling the operation wire on the hand side, the cup 9,
9 to open and close. Also, each cup 9, 9
At the bottom of the cup 9, there is a through hole 1 that communicates between the inside and outside of the cup 9.
4 and 14 are drilled.

Further, each of the laser guides 6, 6 is made of an optical fiber, the tip of which protrudes from the tip of the sheath 2, and each of the cups 9
, 9, and its leading edge is bent at a substantially right angle to form a laser beam emitting end substantially perpendicular to the laser guide body;
Connect this from the through holes 14, 14 of the cups 9, 9 to the cups 9, 9.
It is inserted inside. Note that the proximal end portions of each laser guide 6, 6 protrude from the proximal end of the sheath 2, and are connected to a laser generator (not shown).

When removing a lesion (not shown) such as a tumor or polyp that has occurred in a body cavity using the laser-guided biopsy forceps 1 having such a configuration, first the biopsy forceps 1 is attached to the cup 9,
9 is inserted into a treatment instrument insertion channel of an endoscope (not shown) in a closed state, and its distal end portion is made to protrude from the endoscope and introduced into a target site within the body cavity. Then, push the operation wire on the hand side to open the cups 9, 9, and
, 9, and pull in the operating wire. Then, the lesion is sandwiched between the cups 9 and held in this state. At this time, when the cups 9, 9 are opened, the tip protrusions of the laser guides 6, 6 are pushed into the holes 5, 5 on both sides of the sheath 2, thereby preventing the laser guides 6, 6 from being bent.

6 When the laser generator is operated in this state, the excimer laser is emitted from the laser beam emitting end of each laser guide 6, 6 through the through holes 14, 14 of each cup 9, 9, and hits the lesion sandwiched between the cups 9, 9. The diseased tissue receives this radiation and softens.

Once the diseased tissue has softened to some extent in this manner, the entire laser-guided biopsy forceps 1 is retracted to tear off and collect the softened diseased tissue.

In this way, in order to soften and recover the diseased tissue in the body cavity, the excimer laser is irradiated onto the lesion by the laser-guided biopsy forceps 1 that are integrally provided with the laser guides 6, 6, and the softened diseased tissue is The laser-guided biopsy forceps 1 can be retrieved without having to sequentially insert and remove the laser probe for laser beam irradiation and the biopsy forceps for tissue collection into the treatment instrument insertion channel of the endoscope as in the conventional method. By introducing the agent once into the target site within the body cavity, the diseased tissue can be softened and recovered at the same time in one step.

Therefore, the work becomes easier and easier, the excimer laser can be reliably irradiated to the targeted region, and the softened diseased tissue can be reliably recovered.

FIG. 3 shows a second embodiment of the invention.

In this embodiment, a single lumen tube is used instead of the multi-lumen tube as the sheath 2 in the first embodiment, and the forceps main body 4 is inserted into the insertion hole 21 of the sheath 2.
The biopsy section 7 is provided so that it can be moved forward and backward, and the biopsy section 7 can be pushed out and retracted. Note that other basic configurations and effects are the same as those of the first embodiment.

FIG. 4 shows a third embodiment of the invention.

In this embodiment, each cup 9, 9 is different from the first embodiment described above.
Concave grooves 31 are formed opposite the seam portions on both sides of the
・ is provided, and the laser guides 6, 6 are connected from this concave groove 31...
The laser beam emitting ends of are inserted into the cups 9, 9.

Here, each laser guide 6, 6 has a hole 5 on both sides of the sheath 2,
The laser guides 6, 6 are inserted into the cups 5 in a fixed state, and the tips of the laser guides 6, 6 are free with respect to the respective cups 9, 9. The other basic configuration and operation are the same as those of the first embodiment, but here, it is not necessary to forcibly bend each laser guide 6, 6 when the cups 9, 9 are opened and closed, and the laser guides 6, 6 are This has the effect of preventing damage.

Note that the present invention is not limited to the above-mentioned embodiments. For example, in the first embodiment, the leading end portion of the laser guide 6 is bent at a substantially right angle to emit laser light at a substantially right angle to the body of the laser guide. Shape the end and insert it into the through hole 1 of each cup 9, 9.
4 and 14 into the cups 9 and 9. As shown in FIG. The light may be emitted into the cup 9 through the through hole 14. It goes without saying that various other modifications can be made without departing from the spirit of the invention.

[Effects of the Invention] As described above, according to the present invention, when softening and recovering diseased tissue in a body cavity, a laser-guided biopsy forceps 9 that is integrally provided with a laser guide is used to apply a laser beam to a diseased area. By irradiating the laser and collecting the softened diseased tissue, by introducing the laser-guided biopsy forceps once into the target site within the body cavity, the diseased tissue can be softened and collected in one step at the same time. It can be done in about 20 minutes. Therefore, the work becomes simple and easy, the laser beam can be reliably irradiated to the targeted region, and the softened diseased tissue can be reliably recovered.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the invention, and
Figure I1 is a perspective view of the tip of the laser-guided biopsy forceps, and Figure 2 is a partially sectioned side view. 3 is a perspective view of the tip of a biopsy forceps with a laser guide according to a second embodiment of the present invention, and FIG. 4 is a perspective view of a biopsy forceps with a laser guide according to a third embodiment of the present invention. FIG. 5 is a perspective view of the distal end portion, and FIG. 5 is a partially enlarged view of the distal end portion of a biopsy forceps with a laser guide according to a modified example. 1... Biopsy forceps with laser guide, 2... Sheath,
4...forceps body, 6...laser guide, 9...cup, 10 14...through hole, 3 1...concave groove.

Claims (1)

[Claims] a sheath, a forceps body that is inserted into the sheath and has a cup at its tip that can be opened and closed by operation on the hand side, a through hole provided in the cup, and a laser beam emitting end that is inserted into the sheath and connected to the end of the forceps. 1. A biopsy forceps with a laser guide, comprising: a laser guide disposed facing a through hole and capable of emitting a laser beam into the cup through the through hole.