JPH09276285A - Cup-shaped sampling blade for treating part of treating instrument for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the manufacture of cup-shaped sampling blades. SOLUTION: In a treating instrument for use with an endoscope, in which a treating part provided at the end of an interlocking cord inserted into the body via the endoscope is actuated as it is remotely operated by an operation part, a pair of sampling blades 6, 7 supported at the treating part in such a way that they can open and close are constructed of respective cup blades 19, 20 and levers 9, 10, and are formed integrally with each other by press working. Each of the cup blades 19, 20 has a bowl-shaped wall 21, a storing recess 22 surrounded by the bowl-shaped wall 21, and an edge 23 formed at the open edge of the bowl-shaped wall 21, with the bowl-shaped wall 21 provided with abutting edges 21 a that are opposed E each other at one side of the wall 21. In the levers 9, 10, curved walls 24, 25 that continue to the cup blades 19, 20 at the abutting edges 21a of the bowl-shaped wall 21 are made to overlap each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment section for an endoscope used for surgery, medical examinations, etc., which is provided at the distal end of an interlocking cord inserted into the body through the endoscope. In particular, the present invention relates to a pair of cup-shaped sampling blades which are movably supported by the treatment section.

[0002]

2. Description of the Related Art In a conventional treatment section of an endoscopic treatment tool, a cup-shaped sampling blade is integrally formed by cutting (cutting tool or abrasive grain processing). Therefore, the manufacturing work of the cup-shaped sampling blade was troublesome.

The present invention is directed to facilitating the manufacture of cup-shaped sampling blades.

[0004]

Means for Solving the Problems In the drawings of the respective embodiments described later (first embodiment shown in FIGS. 1 to 6, second embodiment shown in FIGS. 7 to 10 and third embodiment shown in FIGS. 11 to 17) The endoscopic treatment tool according to the present invention will be described with reference to the reference numerals.

The cup-shaped collecting blade for a treatment section according to the first aspect of the present invention is configured as follows. A treatment section (3) provided at the tip of an interlocking cord (2) inserted into the body through an endoscope.
In a treatment tool for an endoscope, which is remotely operated by an operation unit (1), a pair of cup blades (19, 20) supported by the treatment unit (3) so as to be able to open and close each other by press working. Formed integrally.

The cup-shaped collecting blade for a treatment section according to the second invention is constructed as follows. A treatment section (3) provided at the tip of an interlocking cord (2) inserted into the body through an endoscope.
In a treatment instrument for an endoscope, which is remotely operated by an operation unit (1), a pair of sampling blades (6, 7) supported by the treatment unit (3) so as to be able to open and close with each other are cup blades. (1
9 and 20) and levers (9, 10), and both of the sampling blades (6, 7) were integrally formed by press working.

The third invention adds the following constitution to the second invention. The cup blades (19, 20) have a bowl-shaped wall (21), an accommodation recess (22) surrounded by the bowl-shaped wall (21), and a cutting edge (23) formed at the open end of the bowl-shaped wall (21). However, the bowl-shaped wall (21) is provided with both abutting edges (21a) facing each other on one side thereof. In the levers (9, 10), the folding walls (2) that are continuous with the cup blades (19, 20) at both abutting edges (21a) of the bowl-shaped wall (21).
4, 25) are polymerized with each other.

[0008]

DETAILED DESCRIPTION OF THE INVENTION

[First Embodiment] First, a treatment section of a treatment instrument for an endoscope according to a first embodiment of the present invention will be described with reference to FIGS.

(Outline of treatment instrument for endoscope) FIG. 1
As shown in (a), the interlocking cable 2 pulled out from the operation unit 1 is inserted into the body through an endoscope (not shown), and a distal end of the interlocking cable 2 is treated. The part 3 is attached.

In this treatment section 3, as shown in FIGS. 1 (b) and 2 (a) (b), both arm-shaped connecting links 5a, 5b are attached to the tip of the outer peripheral protection coil 4 of the interlocking rope 2. The cup-shaped collecting blades 6 and 7 are supported by the open / close link mechanism 8 with respect to the connecting links 5a and 5b. In this opening / closing link mechanism 8, the levers 9, 10 of the two sampling blades 6, 7 are connected between the arm-shaped connecting links 5a, 5b.
Are rotatably supported by a fixed center support shaft 11, and connection links 12, 1 are respectively provided at the distal ends of the levers 9, 10.
3 are rotatably connected by permanent center support shafts 14 and 15, and the distal ends of both connecting links 12 and 13 are rotatably connected by permanent center support shaft 16.
The distal end of an operation wire 17 in the interlocking cable 2 is attached to the permanent center support shaft 16 by a connection link 18.

When the operation wire 17 is remotely operated by the operation portion 1 and the operation wire 17 is pulled, the permanent central support shaft 16 is separated from the fixed central support shaft 11 in the opening and closing link mechanism 8 so that the two collecting blades 6 and 7 are mutually separated. Closes and abuts. When the operation wire 1 is remotely operated by the operation unit 1 to push the operation wire 17, the return force of the protection coil 4 is also applied thereto, and the permanent center support shaft 16 approaches the fixed center support shaft 11 in the opening / closing link mechanism 8, The two sampling blades 6, 7 open and move away from each other.

(Details of the collecting blades 6 and 7 shown in FIGS. 1, 2 and 6) The pair of collecting blades 6 and 7 comprises cup blades 19 and 20 and the levers 9 and 10. ,
As will be described later, it is integrally formed by pressing.

Each of the cup blades 19 and 20 has a bowl-shaped wall 21, an accommodating recess 22 surrounded by the bowl-shaped wall 21, and a blade edge 23 formed at an open end of the bowl-shaped wall 21.
The bowl-shaped wall 21 has two abutting edges 21 facing each other on one side thereof.
a is provided.

In the levers 9 and 10, the folding walls 24 and 25 which are continuous with the cup blades 19 and 20 at both abutting edges 21a of the bowl-shaped wall 21 are overlapped with each other, and the folding walls 24 are formed. , 25 is continuously extended from the bottom of the bowl-shaped wall 21. Since the extension length of the first folding wall 24 is shorter than the extension length of the second folding wall 25, the second folding wall 2 is formed from the portion where they are overlapped with each other.
Only 5 protrudes to form a step with respect to the first bent wall 24.

The first bent wall 24 and the second bent wall 25
A support hole 27 into which the fixed central support shaft 11 is inserted is provided in the overlapping portion with and. Also, the second bent wall 25
A support hole 28 into which the permanent central support shafts 14 and 15 are inserted is provided in the.

In the cup blades 19 and 20, the bowl-shaped wall 2
The bottom of 1 is provided with a through hole 29 penetrating inside and outside thereof. (About the outline of the manufacturing method of each of the above-mentioned sampling blades 6 and 7 shown in FIGS. 3 to 6) Each of the sampling blades 6 and 7 is manufactured through the following steps 1) to 4).

1) The plate-shaped processed material 30 shown in FIG. 3A is manufactured. 2) This plate-shaped processing material 30 is pressed (shearing such as punching or punching), and as shown in FIG. 3B, a sampling blade material composed of a cup blade material 32 and a lever material 33 having a predetermined shape. 31 is integrally formed. Assuming a folding center line L passing through the cup blade material 32 and the lever material 33, cut recesses 34 are provided on both sides of the folding center line L at the boundary between them. In the lever material 33, the first folding wall 24 is provided on one side of the folding center line L, and the second folding wall 25 is provided on the other side of the folding center line L.

3) On the bent center line L, the sampling blade material 31 is divided into two stages (first stage shown in FIG. 4 and second stage shown in FIG. 5) by pressing (bending, overhanging, etc.). (Forming process) is performed to integrally form the sampling blade body formed body 35 including the cup blade formed body 36 and the lever formed body 37.

In the first step shown in FIG. 4, the cup blade molded body 36 is molded in a substantially bowl shape, but both abutting edges 21a of the bowl-shaped wall 21, the both cut recesses 34, and the first bowl are formed. The folding wall 24 and the second folding wall 25 are separated from each other on both sides of the folding center line L.

In the second stage shown in FIG. 5, the bowl-shaped wall 21 is
The contact edges 21a, the notches 34, the first bent wall 24 and the second bent wall 25 are overlapped with each other. Therefore, in the sampling blade molded body 35, the cup blade molded body 36 is molded in a bowl shape and the lever molded body 3 is formed.
7 is formed into a plate shape.

4) As shown in FIG. 6, the cup blade molded body 36 is pressed (shearing such as punching and punching).
Then, the open edge of the bowl-shaped wall 21 is punched to form the blade edge 23 (blade attachment), and the through hole 29 is formed in the bottom portion of the bowl-shaped wall 21. In addition, both supporting holes 2 are formed in the lever molded body 37.
7, 28 are formed.

The first embodiment has the following characteristics (a) to (c) (other than other technical ideas described later). (A) Since the cup-shaped sampling blade bodies 6 and 7 composed of the cup blades 19 and 20 and the levers 9 and 10 are integrally formed by press working, the cup-shaped sampling blade is cut as in the conventional case (cutting tool processing). The manufacturing operation can be performed more easily than in the case of integrally forming by means of (or abrasive grain processing).

(B) In the cup blades 19 and 20,
It has a bowl-shaped wall 21, a housing recess 22 surrounded by the bowl-shaped wall 21, and a cutting edge 23 formed at the open end of the bowl-shaped wall 21, and the bowl-shaped wall 21 is abutted on both sides thereof facing each other. The edge 21a is provided. In the levers 9 and 10, the cup blade 1
The bent walls 24 and 25, which are continuous with the contact edges 21a of the bowl-shaped wall 21, with respect to 9 and 20, are overlapped with each other. Therefore,
The press working in the above (ii) can be performed more easily.

(C) Cup blade material 32 and lever material 3
When the folding center line L passing through 3 and 3 is assumed, the cut recesses 34 are provided on both sides of the folding center line L at the boundary between them. Therefore, when the sampling blade molded body 35 is changed from the state shown in FIG. 4 to the state shown in FIG. 5, it is easy to bend at the notch concave portion 34, and the press working in the above (a) can be performed more easily. it can.

[Second Embodiment] Next, a treatment portion of a treatment instrument for an endoscope according to a second embodiment of the present invention will be described with reference to FIGS. The second embodiment mainly differs from the first embodiment in the following points.

In this second embodiment, as shown in FIG. 7 (b), instead of the double cut recesses 34 of the first embodiment shown in FIG. 3 (b), a cut line 38 having a similar function to this is formed.
Are formed. 8 (FIG. 4 of the first embodiment).
9) corresponding to the contact edge 21a of the bowl-shaped wall 21, the first bent wall 24 and the second bent wall 25 shown in FIG. As shown in FIG. 5 of the first embodiment), the cup blade molded body 36 is pressed (shearing such as punching and punching) as shown in FIG.
Then, the open edge of the bowl-shaped wall 21 is punched to form the cutting edge 23 (blade attachment), and the protruding portion 39 having the both cut lines 38 at the edge is also punched. Further, the protruding portion 39 is scraped off so as not to protrude beyond the cutting edge 23.

[Third Embodiment] Next, a treatment section of a treatment instrument for an endoscope according to a third embodiment of the present invention will be described with reference to FIGS. The third embodiment mainly differs from the first embodiment in the following points.

In the third embodiment, as shown in FIGS. 11 to 13, only the cup blades 19 and 20 are formed by pressing, and as shown in FIGS. 14 to 16, only the levers 9 and 10 are formed by pressing. As shown in FIG. 17, the cup blades 19 and 20 and the levers 9 and 10 which are formed by being separated from each other are connected to each other by a welding portion 40 and assembled. Unlike the case of the first embodiment, the cup blades 19 and 20 do not have opposite contact edges 21a on one side of the bowl-shaped wall 21, and the entire outer periphery of the bowl-shaped wall 21 is closed. ing.

(Other technical ideas) The technical ideas (other than claims) which can be understood from each embodiment will be described together with the effects. (A) In the endoscopic treatment instrument for remotely operating the treatment section 3 provided at the distal end of the interlocking cord 2 inserted into the body through the endoscope by the operation section 1, the treatment section 3 includes: Is a pair of cup blades 19, which are integrally formed by press working,
20 was movably supported.

(B) In the treatment instrument for an endoscope, the treatment section 3 provided at the tip of the interlocking cord 2 inserted into the body through the endoscope is operated by operating the operation section 1 remotely. A pair of sampling blades 6 and 7 composed of cup blades 19 and 20 and levers 9 and 10 which are integrally formed by press working are supported on the portion 3 so as to be openable and closable.

(C) The processing material 30 is pressed to integrally form a sampling blade material 31 composed of a cup blade material 32 and a lever material 33, and then the cup blade material 32 and the lever material 33 are passed through. The sampling blade body material 31 is pressed on the bending center line L to integrally form a sampling blade body molded body 35 including a cup blade molded body 36 and a lever molded body 37. 36 is bladed, and the cup blades 19 and 20 and the levers 9 and 10 according to claim 3.
Are integrally formed. Therefore, as compared with the conventional case where the cup-shaped sampling blades 6 and 7 are integrally formed by cutting processing (cutting tool processing or abrasive grain processing), the manufacturing operation thereof can be performed easily.

(D) In the cup blades 19 and 20 according to claim 1 or claim 2 or claim 3, or above (a) or (b), the through hole 2 penetrating in and out.
9 were provided. Therefore, when both cup blades 19 and 20 are closed to grab an inspection piece in the body, both cup blades 19 and 2
Since the test piece that has entered the accommodation recess 22 inside 0 is exposed through this through hole 29, a larger number of test pieces can be taken out of the body.

[0033]

According to the cup-shaped collecting blade for the treatment portion of the treatment instrument for an endoscope according to the present invention, the manufacturing operation thereof can be easily performed.

[Brief description of drawings]

FIG. 1A is a partially cutaway front view showing the entire treatment instrument for an endoscope according to a first embodiment, and FIG. 1B is a partially enlarged front view showing a treatment portion. is there.

2A is a partially enlarged front sectional view showing the treatment portion of FIG. 1B, and FIG. 2B is a partially enlarged side sectional view showing the treatment portion of FIG. 1B.

FIG. 3A is a plan view showing a plate-shaped working material in the manufacturing process of the cup-shaped sampling blade according to the first embodiment, and FIG. FIG. 3 is a plan view showing the material of the collecting blade body of FIG.

FIG. 4 (a) is a plan view showing a sampling blade body formed by pressing the sampling blade material of FIG. 3 (b),
Similarly, (b) is a front view and (c) is a sectional view taken along line X ₁ -X _{1 of} (a).

5 (a) is a plan view showing a sampling blade body formed by further pressing the sampling blade body of FIG.
Similarly, (b) is a front view and (c) is a cross-sectional view taken along line X ₂ -X _{2 of} (a).

6 (a) is a plan view showing a cup-shaped collecting blade body of the finished product according to the first embodiment, (b) a likewise front view, X ₃ over the (c) is (a) It is a X ₃ line sectional view.

FIG. 7 (a) is a plan view showing a plate-shaped working material in the process of manufacturing the cup-shaped sampling blade according to the second embodiment, and FIG. 7 (b) is a view showing the plate-shaped working material after being pressed. FIG. 3 is a plan view showing the material of the collecting blade body of FIG.

FIG. 8 (a) is a plan view showing a sampling blade body formed by pressing the sampling blade material of FIG. 7 (b),
Similarly, (b) is a front view, and (c) is a Y ₁ -Y ₁ line sectional view of (a).

9 (a) is a plan view showing a sampling blade body formed by further pressing the sampling blade body formed in FIG.
Similarly, (b) is a front view and (c) is a sectional view taken along line Y ₂ -Y _{2 of} (a).

[10] (a) is a plan view showing a cup-shaped collecting blade body of the finished product according to the second embodiment, (b) a likewise front view, Y ₃ over the (c) is (a) It is a Y ₃ line sectional view.

FIG. 11A is a plan view showing a plate-shaped working material in the manufacturing process of the cup blade according to the third embodiment,
FIG. 6B is a plan view showing the cup blade material after pressing the plate-shaped material.

FIG. 12 (a) is a plan view showing a cup blade molded body after pressing the cup blade material of FIG. 11 (b),
Similarly, (b) is a front view and (c) is a Z ₁ -Z ₁ line sectional view of (a).

13A is a plan view showing a finished product of the cup blade according to the third embodiment, FIG. 13B is a front view of the same, and FIG. 13C is a Z ₂ -Z ₂ line of FIG. 13A. FIG.

FIG. 14A is a plan view showing a plate-shaped working material in the process of manufacturing the lever according to the third embodiment,
(B) is a plan view showing the lever material after pressing the plate-shaped material.

15 (a) is a plan view showing a lever molded body after pressing the lever material of FIG. 14 (b),
(B) is a front view similarly.

16A is a plan view showing a finished product of the lever according to the third embodiment, and FIG. 16B is a front view of the same.

FIG. 17 (a) is a plan view showing a cup-shaped sampling blade in which a cup blade and a lever according to the third embodiment are assembled, FIG. 17 (b) is a front view of the same, and FIG. ₃ ) is a sectional view taken along line Z ₃ -Z ₃ .

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Operation part, 2 ... Interlocking rope, 3 ... Treatment part, 6, 7 ... Cup-shaped sampling blade body, 9, 10 ... Lever, 19, 20 ... Cup blade, 21 ... Bowl-shaped wall, 21a ... Bowl-shaped wall holder Adjacent edges, 22 ... accommodation recess, 23 ... cutting edge, 24, 25 ... bent wall.

Claims (3)

[Claims] 1. A treatment for an endoscope in which a treatment section (3) provided at a distal end of an interlocking cable (2) inserted into a body via an endoscope is remotely operated by an operation section (1). In the ingredients,
A cup-shaped collection for a treatment section in a treatment instrument for an endoscope, characterized in that a pair of cup blades (19, 20) supported by the treatment section (3) so as to be openable and closable are integrally formed by press working. blade. 2. A treatment for an endoscope in which a treatment section (3) provided at a distal end of an interlocking cable (2) inserted into a body through an endoscope is remotely operated by an operation section (1). In the ingredients,
A pair of sampling blades (6, 7) supported by the treatment section (3) so as to be openable and closable with each other is composed of a cup blade (19, 20) and a lever (9, 10). 6, 7)
A cup-shaped collection blade for a treatment portion in a treatment instrument for an endoscope, which is integrally formed by press working. 3. In the cup blade (19, 20), a bowl-shaped wall (21) and a housing recess (22) surrounded by the bowl-shaped wall (21),
Cutting edge (23) formed on the open edge of this bowl-shaped wall (21)
And the bowl-shaped wall (21) is provided with both abutting edges (21a) facing each other on one side thereof. In the lever (9, 10), the cup blade (19,
20) to the abutment edges (21a) of the bowl-shaped wall (21)
The cup-shaped collection blade for the treatment portion of the endoscopic treatment instrument according to claim 2, wherein both of the bent walls (24, 25) continuous with each other are overlapped with each other.