JPH04307050A - Aspiration biopsy apparatus - Google Patents

Abstract

PURPOSE:To provide a biopsy apparatus by eliminating complication of withdrawal from inside an organism at each biopsy while covering a plurality of locations by one biopsy without mixing biopsy tissues mutually. CONSTITUTION:This apparatus has a stabbing needle 3 to be stabbed into a vital tissue 2 and a biopsy aspiration pipeline 5 which is formed in the stabbing needle 3 and opened at the stabbing tip part thereof and the vital tissue 2 is sucked and sampled through an opening 15 of the biopsy aspiration pipeline 5. In the aspiration biopsy apparatus 1, a gel injection pipeline 6 is provided inside the stabbing needle 3 and the biopsy aspiration pipeline 5 is made to communicate with the tip of the gel injection pipeline 6 near the opening 15 of the biopsy aspiration pipeline 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction biopsy device for collecting living tissue by suction for diagnosing cancer, infectious diseases, etc.

0002

BACKGROUND OF THE INVENTION Conventionally, biological tissue examination methods, so-called biopsy methods, have been known in which biological tissues are collected and examined to diagnose cancer, infectious diseases, and the like. At the time of such a biopsy, examples of biopsy tools for collecting living tissue include biopsy forceps and a biopsy brush.

0003

[Problems to be Solved by the Invention] In the biopsy brush, a catheter equipped with a brush is inserted into a living body, for example, endoscopically, and the catheter is moved back and forth to remove cells in the subject area. It is collected by attaching it to a brush, but if multiple locations are collected at once, there is a risk that the biopsy tissue from each biopsy will be mixed together, making it impossible to make an accurate diagnosis. Moreover, this was also true for biopsy forceps. Therefore, to avoid such situations,
For each biopsy, the biopsy device is removed from the body and then reinserted. However, if the biopsy tool is removed from the living body for each biopsy, the examination time becomes longer and the burden on the operator becomes heavier.

[0004] The present invention has been made in view of the above-mentioned circumstances, and its purpose is to eliminate the complexity of removing tissue from the living body for each biopsy, and to remove biopsied tissues from multiple locations without mixing them together. The goal is to provide a biopsy tool that can perform biopsies at once.

[0005]

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a puncture needle that is inserted into living tissue, and a biopsy suction tube that is formed inside the puncture needle and opens at the puncture tip. and a suction biopsy device for suctioning and collecting the biological tissue from the opening of the biopsy suction conduit, wherein a gel injection conduit is provided inside the puncture needle, and a gel injection conduit is provided in the vicinity of the opening of the biopsy suction conduit. In this step, the biopsy suction channel and the tip of the gel injection channel were brought into communication.

[0006]

[Operation] With the above configuration, the gel-like substance in the gel injection channel serves as a sealing material that prevents the initially aspirated tissue from mixing with the subsequently aspirated tissue, so that the subsequently aspirated tissue is It is aspirated without being mixed with the aspirated tissue.

[0007]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an aspiration biopsy device 1 according to an embodiment of the present invention. The suction biopsy tool 1 includes a suction tube 4 connected to the proximal end of a puncture needle 3 that penetrates the outer surface of a living body such as the skin or an organ and punctures into a tissue 2 to be examined. Inside the puncture needle 3, two conduits are provided: a biopsy suction conduit 5 as a conduit for aspirating the biological tissue 2, etc., and a gel injection conduit 6 into which a gel-like substance 9 such as silicone is injected and filled. It is being The biopsy suction conduit 5 opens at the tip of the puncture needle 3 and communicates with a first conduit 7 in the suction tube 4 which has approximately the same inner diameter as this. It is connected to a suction device 10 via 7. Further, the gel injection conduit 6 communicates with a second conduit 8 in the suction tube 4 having approximately the same inner diameter as this, and is connected to the gel injection device 11 via this second conduit 8. has been done.

Near the opening 15 of the biopsy suction conduit 5, the gel injection conduit 6 has its tip communicated with the biopsy suction conduit 5 through a communication port 12.

[0010] The suction device 10 and the gel injection device 11 are
It is operated by a control section 13 electrically connected to these. Further, the control section 13 is operated by a foot switch 14 electrically connected thereto. That is, for example, the foot switch 14
When turned ON, the control unit 13 operates the suction device 10 to perform suction, and also turns the foot switch 14 OFF.
Then, the control unit 13 operates the gel injection device 11 to inject the gel-like substance 9 into the gel injection conduit 6.

Next, the operation of the aspiration biopsy tool 1 having the above structure will be explained.

First, the puncture needle 3 of the aspiration biopsy tool 1 is inserted into the tissue 2 to be examined. Then, the foot switch 14 is turned on, and the control unit 13 drives the suction device 10 to suction the tissue 2. Once the tissue 2 has been suctioned to the point where it has passed through the communication port 12, the next step is to turn the foot switch 1 on.
4 and stop the suction device 10,
The gel injection device 11 is driven by the control unit 13 to inject the gel-like substance 9 into the gel injection conduit 6 . At this time, the gel-like substance 9 is injected from the gel injection conduit 6 through the communication port 12 into the biopsy suction conduit 5 until the lumen of the biopsy suction conduit 5 is filled. As a result, the opening 15 of the biopsy suction channel 5 is sealed by the gel-like substance 9.

Thereafter, the puncture needle 3 is again punctured into a tissue at a site other than the tissue 2, and the foot switch 14 is pressed.
If you turn on the suction device 10 and suction the tissue at the other site together with the gel-like substance 9, the gel-like substance 9 will combine with the initially aspirated tissue 2 and the subsequently aspirated tissue at the other site. Since it acts as a sealing material to prevent mixing with the tissue 2, the tissue of the other site that is subsequently suctioned is suctioned without being mixed with the tissue 2 that was suctioned first.

[0014] Note that the gel injection device 11 is
may be injected until it fills the lumen of the biopsy suction line 5, and then the foot switch 1 may be controlled to stop.
4 is turned off, the suction device 10 continues to operate, and the suction device 10 may also be controlled to stop at the same time as the gel injection device 11 is stopped, and it is desirable to perform control according to the situation.

[0015] Therefore, by repeating the above operation many times, several types of biopsy tissues 2 (for example, tissues 2a, 2b) can be obtained.
, 2c) can be biopsied separately without mixing. That is, multiple locations can be biopsied at once without removing the biopsy tool 1 from the living body for each biopsy. This shortens the inspection time and significantly reduces the burden on the operator.

Next, the case where the aspiration biopsy tool 1 is inserted endoscopically into a living body will be explained with reference to FIG. 2. Note that the parts in the drawing of FIG. 2 that are common to those in FIG.

In the illustrated biopsy system 20, an endoscope 21 has an insertion section 22 made of a multi-lumen tube. The suction biopsy tool 1 is inserted into a lumen 22a as a treatment tool channel provided in the insertion section 22 through a treatment tool insertion port 29 provided in the operating section 23. Further, a light guide cable (not shown) is inserted into the lumen 22b. The light guide cable is connected to a light source device 26 via a universal cord 24 attached to the operation section 23,
Light from the light source device 26 can be emitted from the tip of the insertion section 22. Further, an observation optical system (not shown) such as an objective lens, an image guide cable, or a solid-state image pickup device is incorporated in the lumen 22c. and,
The observation optical system is optically and electrically connected to a monitor 25 so that the inside of the living body into which the insertion section 22 is inserted can be observed through the monitor 25.

The operation section 23 also includes an operation switch 28 electrically connected to the control section 13 via the light source device 26.
is provided, and the control unit 13 is driven by this operation switch 28 to perform the above-mentioned suction operation and the gel-like substance 9.
The injection operation can be performed continuously.

Further, the hard copy device 27 such as a camera, a color copy, a video disk, etc. is equipped with a light source device 26, for example.
electrically connected to the monitor 25 via the
Operated in synchronization with the operation switch 28, the monitor 25
You can now copy the screen. In other words, the operation switch 28 allows hard copying, suction operation, and gel substance injection operation to be performed continuously.

Therefore, in the biopsy system 20, first, the insertion section 22 of the endoscope 21 is inserted into the living body and brought close to the biopsy tissue 2 site as shown in the figure. Light source device 2
The light from 6 is emitted from the distal end of the insertion section 22 via the universal cord 24 and the light guide cable (not shown), and is irradiated to the biopsy tissue 2 site of the irradiated body, as well as reflected light from the irradiated body. is imaged on the monitor 25 through the observation optical system in the lumen 22c, so that the operator can observe the state of the two biopsy tissue sites through the monitor 25.

When biopsying the tissue 2, the suction biopsy tool 1 is first inserted into the endoscope insertion section 2 through the treatment tool insertion port 29.
2 into the lumen 22a of the biopsy tissue 2, and insert the puncture needle 3 into the biopsy tissue 2.
Approach the site and puncture into two parts of the tissue. Next, the operation switch 28 is turned on, the hard copy device 27 is activated to copy the screen of the monitor 25 showing the state of the two biopsy tissue sites, and the control device 13 is activated to operate the suction device 10 and the gel injection device. 11 to perform the above-described suction operation and gel-like substance injection operation. Therefore, according to the above-mentioned biopsy system 20, not only can the above-mentioned effects as the suction biopsy device 1 be obtained, but also the two biopsy tissue sites can be recorded, so that extremely useful examinations can be performed. can.

By the way, various types of endoscopes have been known in the past, but the endoscope shown in FIG.
is made of a flexible tube, and the tip part 3 is equipped with an observation optical system, etc.
1, and a curved portion 3 located immediately on the base end side of this distal end portion 31.
2, and a flexible portion 33 further located on the proximal end side of the curved portion 32.
It is composed of. Further, the bending portion 32 is connected to the bending piece 3
4, a first curved portion 32a that can be curved by 4, and a flexible portion 3
3, and a second curved portion 33b having more flexibility than the second curved portion 33b. The tube portions of the curved portion 32 and the flexible portion 33 are composed of an outermost skin 35 and a blade 36 inside thereof.
It has a three-layer structure in which a flex tube 37 is further provided inside the blade 36. Further, a bending piece 34 is provided inside the first bending part 32a, and the first bending part 32a can be bent by this bending piece 34. The outer skin 35a of the curved portion 32 is made of an elastic member such as rubber, and the outer skin 35b of the flexible portion 33 is made of, for example, urethane resin.

In an endoscope in which the curved portion 32 has such a configuration, as the first curved portion 32a, which is the most flexible, curves, the channel 40 portion in the first curved portion 32a The channel tube 39 forming the channel 40 may buckle at the site when the endoscope is inserted. Therefore,
A protective coil 38 is fitted around the outer periphery of the channel tube 39 at the aforementioned portion to prevent buckling during insertion.

[0024] Conventionally, however, such a protective coil 38 has not completely covered the outer periphery of the channel tube 39 at the second curved portion 32b.
There was a risk that the channel tube 39 would buckle at this relatively soft second curved portion 32b.

Therefore, as shown in FIG. 3, if the protective coil 38 is fitted around the outer periphery of the channel tube 39 at the channel 40 portion at least in the first curved portion 32a and the second curved portion, the channel tube in the curved portion 32 39 can be prevented from buckling.

[0026] Also, the channel 4 of the insertion section 30 of the endoscope
In order to insert a treatment instrument or the like into the 0, it is inserted through a channel opening 53 (see FIG. 4) provided in the operating section 52. A channel tube 54 (see FIG. 4) is provided in the endoscope operating section 52 for guiding a treatment instrument from the opening 53 into the channel 40. Conventionally, this channel tube 54 is bent within the operating section 52 of the endoscope from the proximal end of the insertion section 30 to the channel opening 53, and when the treatment instrument is inserted and removed many times, the channel tube 54 The outer peripheral side of the bent part of 54 protrudes or is scraped and becomes thin,
Eventually, the channel tube 54 may be torn, and the inside of the operating section 52 of the endoscope may become contaminated with dirt, water, etc., making the endoscope unusable.

Therefore, as shown in FIG. 4, if a flexible tubular member 51 is fitted around the outer periphery of the bent portion 55 of the channel tube 54, the resistance at the bent portion 55 of the channel tube 54 is improved, and the internal vision is improved. It is possible to prevent the interior of the mirror from being contaminated with dirt and becoming unusable.

The flexible tubular member 51 may be a flexible member such as a flex tube, a rubber tube, or a braid. In addition, if the flexible tubular member 51 is made of a high-friction member and is adhesively fixed at both ends of the bent portion 55 of the channel tube 54, when the channel tube 54 is torn, the friction becomes large when inserting a treatment instrument, etc. Therefore, the operator can notice the tube breakage due to the feeling of resistance. Furthermore, in this case, since the flexible tubular member 51 is bonded at both ends of the bent portion 55 of the channel tube 54, even if the channel tube 54 is torn, the inside of the endoscope will not be contaminated with water, dirt, etc. The endoscope can be reused simply by replacing the channel tube 54. moreover,
If the flexible tubular member 51 is made of a heat-shrinkable tube, the assemblability will be improved, and the channel tube 54 and the flexible tubular member 51 will come into close contact with each other, so that the durability of the bent portion 55 will be further strengthened.

[0029]

[Effects of the Invention] As explained above, according to the present invention,
Multiple locations can be biopsied at once without mixing biopsy tissues. Furthermore, since there is no need to take it out of the body and reinsert it for each biopsy, the examination time is short and the burden on the operator is reduced.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an aspiration biopsy tool showing one embodiment of the present invention, and a schematic configuration diagram of a biopsy system that drives this aspiration biopsy tool.

FIG. 2 is a schematic configuration diagram of a biopsy system in which the suction biopsy tool shown in FIG. 1 is inserted endoscopically into a living body and driven.

FIG. 3 is a longitudinal sectional view showing an example of an insertion section of an endoscope.

FIG. 4 is a longitudinal sectional view of the vicinity of the operating section when the flexible tube is inserted into the insertion section of the endoscope.

[Explanation of symbols]

1...Aspiration biopsy tool 2...Biological tissue 3...Puncture needle 5... Biopsy suction line 6... Gel injection pipe 9...gel-like substance 15...Aperture

Claims (1)

[Claims] 1. A puncture needle that is inserted into living tissue, and a biopsy suction conduit formed in the puncture needle and opened at the puncture tip, the biopsy suction conduit being opened from the opening of the biopsy suction conduit. In an aspiration biopsy tool for collecting living tissue by suction, a gel injection channel is provided inside the puncture needle, and the ends of the biopsy aspiration channel and the gel injection channel are arranged near the opening of the biopsy aspiration channel. An aspiration biopsy device characterized by communicating with the