JPH10137252A - Organismic tissue collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To collect plural excised samples and to easily perform operation for taking in the excised samples. SOLUTION: On the hand side of a top end collecting part 5, an operating wire 8 is fixed, the operating wire 8 is inserted through a sheath part 4, and the operating wire 8 is fixed to a knob 9 movable back and forth to an operating part 3. At the top end collecting part 5, when a lot of busket wires 7 are protruded from the sheath part 4, they are expanded in the form of basket (the maximum interval of wires is less than 5mm) and a housing space 10 is formed inside. Two opening wires 6 are made mutually adjacent and formed so that the mutual interval can be 10-20mm at a maximum in case of expansion, and an opening part 11 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a living tissue collecting tool, and more particularly, to a living tissue collecting tool characterized by a structure of a tip collecting portion for collecting a living tissue.

[0002]

2. Description of the Related Art In recent years, techniques for resecting polyps and mucous membranes in a body cavity endoscopically have been widely used. The excised polyps and mucous membranes are always collected because a pathological diagnosis is required.

At this time, a relatively small resected specimen is collected by suction through a forceps channel of an endoscope.
On the other hand, a resected specimen that cannot pass through the forceps channel relatively large has conventionally been adsorbed to the distal end of the endoscope by suction and removed from the body together with the endoscope when one resection is completed.

[0004] Therefore, when the resected specimen is large and many exist, it is necessary to remove and reinsert the endoscope each time one resection is completed, which causes problems such as prolonged treatment time and increased operator fatigue. was there.

[0005] In order to solve the above-mentioned problem, a collecting tool which can collect a plurality of resected specimens at once is shown in FIG.
There is a living tissue recovery tool 101 of the form shown in FIG.

This is an application of the structure disclosed in Japanese Utility Model Laid-Open Publication No. Sho 62-166813 as a living tissue collecting tool. As shown in FIG.
Is composed of a flexible hollow sheath portion 102 located on the proximal side and a distal end collecting portion 103 located on the distal side, and the distal end collecting portion 103 includes a large number of baskets. It is composed of wires 104. At this time, the basket wire 10 of the ordinary basket-shaped collection tool is used.
The interval of 4 is set to 5 mm or less to prevent the excision specimen once taken into the storage space 106 in the basket wire 104 from dropping out, and a plurality of excision specimens can be collected.

[0007]

However, in the structure of the conventional living tissue collecting tool 101 shown in FIG. 7, the interval between the basket wires 104 is set to 5 mm or less. To import to
As shown in FIG. 8, it is necessary to press a part of the basket wire 104 against the mucous membrane to deform it, to form an opening 107 for collecting the resected specimen by widening the gap, and the operation becomes complicated. There is.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a biological tissue collecting tool which can collect a plurality of resected specimens and can easily perform an operation for taking in the resected specimens. And

[0009]

According to the present invention, there is provided a living tissue collecting tool formed of a hollow sheath portion which can be inserted into a forceps channel of an endoscope, and a number of wires located at the distal end of the hollow sheath portion. In a biological tissue collecting tool comprising a tip collecting portion that can be expanded in a basket or net shape, in a spread state forming the tip collecting portion, a wire interval of one set of the multiple wires is changed to another. The opening is formed by making the wire interval wider than the wire spacing.

In the biological tissue collecting tool according to the present invention, in the expanded state forming the distal end collecting portion, the interval between the one set of the plurality of wires is wider than the interval between the other wires. By forming the opening, a plurality of resected specimens can be collected and the operation of taking in the resected specimens can be easily performed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 relate to a first embodiment of the present invention. FIG.
FIG. 2 is an explanatory diagram illustrating the operation of the biological tissue collecting tool of FIG.

As shown in FIG. 1, a biological tissue collecting tool 1 according to the present embodiment is provided on an elongated insertion portion 2 that can be inserted into a forceps channel of an endoscope (not shown), and is provided on the hand side of the insertion portion 2. And an operation unit 3.

The insertion section 2 includes a flexible hollow sheath section 4 located on the proximal side and a distal end recovery section 5 located on the distal side. It is composed of an opening wire 6 and a number of basket wires 7. Here, the opening wire 6 and the basket wire 7 are flexibly formed of, for example, a stranded wire or a single wire of a metal such as stainless steel or a resin such as polyamide.

An operation wire 8 is fixed to the distal side of the distal end recovery unit 5, and the operation wire 8 is inserted through the inside of the sheath portion 4. The knob 9 is fixed to the knob 9 that can move back and forth.
Is moved to the proximal side, whereby the distal end recovery unit 5 is housed in the lumen of the sheath unit 4 and can be inserted into the forceps channel of the endoscope.

When the many basket wires 7 of the distal end recovery portion 5 protrude from the sheath portion 4, they expand in a basket shape to form a storage space 10 therein. At this time, the interval between the basket wires 7 is set to be 5 mm or less at the maximum.

Further, the two open wires 6 of the tip collecting section 5
Are adjacent to each other, and are formed so that the distance between each other when expanded is 10 to 20 mm at the maximum, and form the opening 11. Here, the opening wire 6 is configured to be harder by making the diameter larger than that of the basket wire 7.

Next, the operation of the embodiment constructed as described above will be described.

In the biological tissue collecting tool 1 according to the present embodiment, the insertion section 2 is stored with the distal end collecting section 5 housed in the sheath section 4.
Is inserted into the body through a forceps channel of an endoscope (not shown), the knob 9 is moved to the distal end side to cause the distal end recovery unit 5 to protrude from the sheath portion 4 via the operation wire 8, and the opening wire 6 and the basket wire 7 are Expands into a basket shape.

At this time, the opening 11 is formed in the opening wire 6 by expanding the opening wire 6 which is harder than the basket wire 7.

Then, the opening 11 is brought into contact with a cut sample (not shown), and the cut sample is taken into the storage space 10 formed by the basket wire 7 through the opening 11. Next, the knob 9 is moved to the hand side, and as shown in FIG. 2, the distal end recovery unit 5 is partially stored in the sheath unit 4, and the resection specimen is stored by reducing the opening 11.

After holding the first resected sample in this manner, the tip recovery section 5 of the biological tissue collecting tool 1 is moved to the position of the next resected sample to be stored in order to store the next resected sample. Then, in the same manner as described above, the knob 9 is moved to the tip, the tip collecting part 5 is expanded, and the next resected specimen is stored.

The required number of resected specimens is stored in the storage space 1.
The above operation is repeated until the living tissue collection tool 1 is removed from the body together with an endoscope (not shown) until the plurality of resected specimens are collected.

As described above, in the biological tissue collecting tool 1 of the present embodiment, when the distal end collecting portion 5 is projected from the sheath portion 4 and the opening wire 6 and the basket wire 7 are expanded in a basket shape, the opening wire 6 Since the opening 11 is formed, the resected sample can be easily taken into the storage space 10 and the opening 1 can be easily moved by moving the knob 9.
By reducing the size of one, a plurality of resected specimens can be reliably collected.

FIGS. 3 and 4 relate to a second embodiment of the present invention. FIG.
FIG. 4 is an explanatory diagram illustrating the operation of the biological tissue collecting tool of FIG.

Since the second embodiment is almost the same as the first embodiment, only different points will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 3, the biological tissue collecting tool 1a of the present embodiment includes an open / close pipe 21 through which two opening wires 6 are inserted, and a sheath portion 4 fixed to the proximal side of the open / close pipe 21. Is provided with an opening / closing operation wire 22 for passing through.

The proximal side of the opening / closing operation wire 22 is fixed to a slider 24 via a base 23 communicating with a sheath portion 4 provided on the operation portion 3. It is slidably provided in the direction.

The other structure is the same as that of the first embodiment.

Next, the operation of the present embodiment thus configured will be described.

In the biological tissue collecting tool 1a of the present embodiment,
With the distal end recovery section 5 housed in the sheath section 4, the insertion section 2 is inserted into the body through a forceps channel of an endoscope (not shown), and the knob 9 is moved to the distal side to recover the distal end via the operation wire 8. The portion 5 is projected from the sheath portion 4, and the opening wire 6 and the basket wire 7 are expanded in a basket shape.

At this time, the slider 24 is operated to move the opening / closing pipe 21 to the hand side via the opening / closing operation wire 22,
An opening 11 is formed in the opening wire 6. Then, the opening 11 is brought into contact with the resected sample, and the resected sample is taken into the storage space 10.

After taking the resected specimen into the storage space 10,
By operating the slider 24, the opening / closing pipe 21 is moved to the distal end side, and as shown in FIG. 4, the opening / closing pipe 21 is positioned at the center of the distal end collecting section 5, the opening 11 of the opening wire 6 is closed, and the resected specimen is closed. Hold.

After holding the first resected sample in this way, in order to store the next resected sample, the tip recovery unit 5 is moved to the position of the target next resected sample, and the slider 2 is moved.
4 to open / close the pipe 21 via the opening / closing operation wire 22
Is moved to the proximal side to form an opening 11 in the opening wire 6 and the resected sample is taken into the storage space 10, and then the opening 11 of the opening wire 6 is closed to hold the resected sample.

Thus, the necessary number of resected specimens can be stored in the storage space 1.
After the above operation is repeated until the living tissue collecting tool 1a is removed from the body together with the endoscope (not shown),
Collect multiple resected specimens.

As described above, according to the biological tissue collecting tool 1a of this embodiment, in addition to the effects of the first embodiment, the slider 2
Since the opening 11 of the opening wire 6 is closed by the opening / closing pipe 21 by the operation of 4, the resected specimen in the storage space 10 can be reliably held and collected without falling off.

FIGS. 5 and 6 relate to a third embodiment of the present invention, and FIG.
FIG. 6 is an explanatory diagram illustrating the operation of the biological tissue collecting tool of FIG.

Since the third embodiment is almost the same as the second embodiment, only different points will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 5, in the biological tissue collecting tool 1b of the present embodiment, the pressing wire 31 is fixed to the proximal side of the two opening wires 6. This pressing wire 31
It penetrates through the sheath portion 4 and is fixed to the slider 24 provided on the operation portion 3, and is slidably provided in the axial direction with respect to the sheath portion 4.

The other structure is the same as that of the first embodiment.

Next, the operation of the present embodiment configured as described above will be described.

In the biological tissue collecting tool 1b of the present embodiment,
With the distal end recovery section 5 housed in the sheath section 4, the insertion section 2 is inserted into the body through a forceps channel of an endoscope (not shown), and the knob 9 is moved to the distal side to recover the distal end via the operation wire 8. The portion 5 is projected from the sheath portion 4, and the opening wire 6 and the basket wire 7 are expanded in a basket shape.

At this time, the pressing wire 31 is moved to the distal end side by operating the slider 24, and the opening wire 6 is expanded independently to form the opening 11 in the opening wire 6. And
The opening 11 is brought into contact with the resected sample, and the resected sample is taken into the storage space 10.

After taking the resected specimen into the storage space 10,
By operating the slider 24, as shown in FIG. 6, the opening wire 6 is pulled toward the user via the pressing wire 31, and the opening 11 is closed.

After holding the first resected sample in this way, in order to store the next resected sample, the tip recovery unit 5 is moved to the position of the target next resected sample and the slider 2 is moved.
4, the pressing wire 31 is moved to the distal end side, the opening wire 6 is independently expanded to form the opening 11 in the opening wire 6, and the opening 11 is brought into contact with the next resected specimen to receive the storage space. 1
After being taken into the opening 0, the opening wire 6 is pulled toward the hand side via the pressing wire 31, the opening 11 is closed, and the next resected specimen is held.

Thus, the necessary number of resected specimens is stored in the storage space 1.
After the above operation is repeated until the living tissue collection tool 1b is removed from the body together with an endoscope (not shown)
Collect multiple resected specimens.

Accordingly, the biological tissue collecting tool 1 of the present embodiment
b, as in the second embodiment, the storage space 1
The resected specimen within 0 can be securely held and collected without falling off.

[Supplementary Note] (Supplementary Note 1) A hollow sheath portion that can be inserted into a forceps channel of an endoscope, and a basket-like or net-like shape formed by a large number of wires and located at the distal end side of the hollow sheath portion. In a biological tissue collecting tool including an openable tip collecting portion, in a spread state forming the tip collecting portion, a wire interval of one set of the multiple wires is made wider than other wire intervals. A biological tissue collecting tool, wherein an opening is formed by the method.

(Additional Item 2) The biological tissue collecting tool according to Additional Item 1, further comprising an opening / closing means for opening and closing the opening.

(Supplementary note 3) The opening / closing means moves the pipe in which the pair of wires forming the opening are inserted, and moves the pipe fixed to the proximal side of the pipe in the longitudinal axis direction of the hollow sheath. The biological tissue collecting device according to claim 2, comprising a pipe operating means for operating.

(Additional Item 4) The opening / closing means is fixed to a hand side of the set of wires forming the opening, and is a wire operating means for moving the set of wires in the longitudinal axis direction of the hollow sheath. The biological tissue collecting device according to additional item 2, characterized by comprising:

(Additional Item 5) The additional items 1, 2, 3 or 4 are characterized in that the plurality of wires excluding the one set of wires are formed more flexibly than the one set of wires.
The biological tissue collecting device according to any one of the above.

[0053]

As described above, according to the biological tissue collecting tool of the present invention, in a state where the distal end collecting portion is formed in an expanded state,
Since the opening is formed by making the spacing between one set of wires larger than the spacing between the other wires, a plurality of resected specimens can be collected, and the operation of taking in the resected specimens can be easily performed. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a biological tissue collecting tool according to a first embodiment of the present invention.

FIG. 2 is an explanatory view illustrating the operation of the biological tissue collecting tool of FIG. 1;

FIG. 3 is a configuration diagram showing a configuration of a biological tissue collecting tool according to a second embodiment of the present invention.

FIG. 4 is an explanatory view for explaining the operation of the biological tissue collecting tool of FIG. 3;

FIG. 5 is a configuration diagram showing a configuration of a biological tissue collecting tool according to a third embodiment of the present invention.

FIG. 6 is an explanatory view illustrating the operation of the biological tissue collecting tool of FIG. 5;

FIG. 7 is a configuration diagram showing a configuration of a conventional biological tissue collecting tool.

FIG. 8 is an explanatory view for explaining the operation of the conventional biological tissue collecting tool of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Biological tissue collection tool 2 ... Insertion part 3 ... Operation part 4 ... Sheath part 5 ... Tip collection part 6 ... Opening wire 7 ... Basket wire 8 ... Operation wire 9 ... Knob 10 ... Storage space 11 ... Opening

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kou Kimura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Minoru Shinozuka 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.

Claims (1)

[Claims] 1. A hollow sheath portion which can be inserted into a forceps channel of an endoscope, and a tip collecting portion which is located at the tip side of the hollow sheath portion and can be opened in a basket or net shape formed by a large number of wires. In the biological tissue collecting tool, the opening is formed by making a wire interval of one set of the large number of wires wider than other wire intervals in an expanded state forming the distal end collecting portion. A biological tissue collecting tool characterized by the above-mentioned.