JPH10201765A - Device for feeding elastic ring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate a number of elastic rings loaded to a cylindrical body smoothly, surely and successively piece by piece and to supply it by feeding the elastic ring through the advance of a pusher piece and climbing over the elastic ring loaded to the cylindrical body through the retreat. SOLUTION: This device is so structured that plural elastic rings 8 are loaded to the outer circumferential face of a cylindrical body 11 fixed on the tip end body 1a, that a nearly semi-circular pusher piece 14 consisting of a pair of upper and lower pieces is provided, as is a bellows member 15 for displacing this pusher piece 14 to the tip end and the base end side, and that the pusher piece 14 is connected through a hinge to a movable plate 17 connected to the bellows member 15. Then, with the movable plate 17 advanced in the direction to the tip end side, the pusher piece 14 is moved while being held essentially in a perpendicular state, moving the elastic ring 8; with a projected part present by the elastic ring 8 when the movable plate 17 is retreated toward the base end side, the pusher piece turns in the direction away from the movable plate 17, so that a tapered face 14a formed on the pusher piece 14 climbs over the elastic ring 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inserting an insertion portion of an endoscope or the like into a body cavity, sucking up a diseased portion or the like on the inner wall of the body cavity with suction means, and binding the affected portion with an elastic ring. The present invention relates to a connected elastic ring supply device.

[0002]

2. Description of the Related Art Various treatments and other treatments are performed in a body cavity by inserting an insertion portion of an endoscope into a body cavity. As one of such treatments, for example, a varicose vein generated on an inner wall of a digestive organ is used. There is an action to remove. In this procedure, when it is discovered by an endoscope that varicose veins have occurred in organs such as the stomach and body lumens such as the esophagus, the site of the varicose vein is tied, and a sclerosing agent is injected into the varicose vein. By curing, it is removed so as to separate it from the body tissue. To this end, a method has been developed in which a varicose vein is bulged by a predetermined amount from the inner wall of a body cavity and then tied with an elastic ring to facilitate the operation of tying the bulge. Therefore, when performing such a treatment, the elastic ring supply device is connected to the distal end of the insertion section of the endoscope.

FIG. 9 shows a conventional elastic ring supply apparatus. In the drawing, reference numeral 1 denotes an insertion portion of an endoscope, and although not shown, an illumination window for illuminating a body cavity and an observation window 2 are provided in a distal end main body 1a of the insertion portion 1. Can be The observation window 2 is provided with an observation optical system 3 and a solid-state image sensor 4 (an image guide may be provided instead of the solid-state image sensor). The insertion portion 1 is provided with a treatment tool insertion channel 5 for inserting forceps and other treatment tools,
The treatment instrument insertion channel 5 opens in the direction of the visual field of the observation window 2 in the distal end main body 1a.

In the endoscope having the above configuration, an elastic ring supply device 6 is connected to the distal end main body 1a of the insertion section 1. The elastic ring supply device 6 has a hermetic hood 7 formed of a rigid plastic or the like in a cylindrical shape and fixedly held by the distal end main body 1a. An elastic ring 8 is fitted to the outer surface of the hermetic hood 7. ing. Here, the elastic ring 8 has an extremely small inner diameter in a free state as shown in front of the elastic ring supply device 6 in FIG. Make it in the expanded state. An operation wire 9 is connected to at least two places of the elastic ring 8 fitted to the airtight hood 7 in order to supply the elastic ring 8 so as to drop off the airtight hood 7. These operation wires 9 are inserted into the treatment instrument insertion channel 5. The elastic wire 8 can be supplied by remote control by leading the operation wire 9 to the outside from a main body operation unit or the like connected to the base end of the insertion unit in the endoscope.

When the insertion portion 1 is inserted into the body cavity, the condition of the inner wall of the body cavity is inspected through the observation window 2 under illumination from the illumination window, and when a varicose vein is found, FIG. As shown, the varicose vein K is surrounded by the airtight hood 7. By using the treatment instrument insertion channel 5 as a suction passage and applying a negative pressure to the treatment instrument insertion channel 5, as shown in FIG. Let out. When the operation wire 9 is pulled in a state where only a necessary portion is expanded, the elastic ring 8 connected to the operation wire 9 moves to the distal end side along the outer surface of the airtight hood 7 and drops off from the foremost end thereof. As a result, as shown in FIG. 12, the varicose vein K moves to the site of the varicose vein K swelled by suction. Since the inner diameter of the elastic ring 8 is extremely small in the free state, when the elastic ring 8 is separated from the airtight hood 7, the elastic ring 8 surrounds the root of the varicose vein K being sucked and narrows the root. And the varicose vein K is substantially tied. Therefore,
When a sclerosing agent is injected into the site of the varicose vein K, only the swollen portion is hardened, and eventually falls from the body tissue.

[0006]

As described above, when the elastic ring 8 is supplied from the airtight hood 7 by the operation wire 9, the operation wire 9 is supplied after the elastic ring 8 is supplied so as to bind the varicose vein. It is necessary to separate the elastic ring 8 by cutting or the like, and there is a problem that its operability is poor. In addition, it is necessary to continuously supply the elastic ring 8 due to the presence of varicose veins at a plurality of places. For this purpose, as shown by a virtual line in FIG. It is necessary to provide a plurality of elastic rings 8 on the base member 7 and to increase the number of operation wires 9 in accordance with the number of the elastic rings 8, which complicates the configuration. If the operation procedure of the wire 9 is mistaken, there is also a problem that a plurality of elastic rings 8 are supplied at the same time. Further, by pulling the operation wire 9, the elastic ring 8 is connected to the airtight hood 7.
, It cannot always be supplied smoothly due to sliding resistance and the like. Especially when a plurality of elastic rings 8 are provided, the sliding distance of the last elastic ring becomes extremely long. From the point of view, there is also a problem that the number of elastic rings cannot be increased so much.

The present invention has been made in view of the above points, and an object of the present invention is to enable a large number of elastic rings to be smoothly and reliably separated and supplied one by one. .

[0008]

In order to achieve the above-mentioned object, according to the present invention, an airtight hood is connected to a distal end of an insertion portion having a suction passage, and a plurality of elastic rings are extended on an outer surface of the airtight hood. Attached in an opened state, in which the elastic ring is supplied from the tip of the airtight hood, the airtight hood includes a cylindrical main body having an elastic ring mounted on an outer peripheral surface thereof,
A ring detaching member for detaching the elastic ring attached to the cylindrical body by pushing the elastic ring toward the distal end side; and a driving unit for reciprocating the ring detaching member in the axial direction of the airtight hood. The detachable member is held in a state of being substantially in contact with the outer surface of the cylindrical main body when moving in the distal direction, and the pushing member that can be displaced in a direction away from the outer surface of the cylindrical main body when moving in the proximal direction. It is characterized by having a configuration provided with.

The pushing part constituting the ring attaching / detaching member comprises a plurality of parts having a predetermined angle, and each pushing part comes into contact with the end face of the pushing / pulling member constituting the driving means. In this state, it is possible to adopt a configuration in which the connection is made rotatable in a direction away from the end face by, for example, a hinge. Further, the pushing piece can be mounted on a support member which reciprocates by the driving means. In this case, notches are formed at predetermined intervals in the circumferential direction on the distal end side of the support member, and a rotation shaft is provided in each of the notches. The pushing piece may be divided into a plurality of pieces and abut on the end wall of each notch, and may be rotatably mounted on each of the rotating shafts. Further, it is preferable that urging means such as a spring act on the pushing member so as to urge the pushing piece so as to substantially contact the outer surface of the cylindrical main body.

On the other hand, the drive means includes an annular push / pull member slidably fitted to the cylindrical main body, and a ring detachable member is connected to the push / pull member. And an urging means for urging the push / pull member in the axial direction or urging the push / pull member toward the distal end of the tubular body by expanding and contracting the bellows member. An operation member such as an operation wire may be connected, or may be configured to be pushed and pulled by a cylinder in order to move the operation member toward the base end side against the urging means.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. First, FIGS. 1 to 5 show a first embodiment of the present invention. In the drawings, the configuration itself of the endoscope is not particularly different from that of the above-mentioned prior art, and therefore the same or equivalent members are used. about,
The same reference numerals are given and the detailed description is omitted. Since substantially the same elastic ring is used, the reference numeral 8 is used for the elastic ring.

First, in FIGS. 1 and 2, reference numeral 10 denotes an elastic ring supply device. This elastic ring supply device 10
Has a cylindrical main body 11 on which an elastic ring 8 is mounted in an expanded state on an outer surface, and the cylindrical main body 11 is fixed to a distal end main body 1a in an insertion portion of an endoscope. Here, as a fixing method of the cylindrical main body 11, a well-known fixing method such as screw fitting or bayonet connection is used, but a connecting portion of the cylindrical main body 11 to the distal end main body 1a is maintained in an airtight state. When the distal end surface of the airtight hood protrudes forward by a predetermined length and comes into contact with the inner wall of the body cavity, an airtight hood is formed in front of the distal end portion main body 1a to form a closed space.

A plurality of elastic rings 8 are fitted on the outer surface of the cylindrical main body 11 at predetermined intervals, and each of these elastic rings 8 is supplied by being pushed one by one toward the distal end. It has become so. For this purpose, the elastic ring 8
Attaching / detaching member 1 for moving the member to the distal end side of cylindrical body 11
2 and a driving means 13 for reciprocating the ring attaching / detaching member 12 in the axial direction of the cylindrical main body 11. First, as shown in FIG. 3, the ring attaching / detaching member 12 is constituted by a pair of upper and lower substantially semicircular push-moving pieces 14.
Each of these pusher pieces 14 is formed on its inner peripheral side with a tapered surface 14a inclined from one end to the other end. The driving means 13 has a bellows member 15 formed in an annular shape, and the bellows member 15 is provided by being fixed to an annular fixing plate 16 fixed to the base end of the tubular main body 11. Further, the movable plate 17 is fixed to the distal end side of the movable plate 17 which is also formed in an annular shape.
When the elastic ring 8 is mounted on the outer surface of the elastic ring 8, the inner diameter of the elastic ring 8 is maintained at least in a non-contact state with the elastic ring 8.

As is apparent from FIG. 3, each of the pushing members 14 is connected to the movable plate 1 of the driving means 13 via a hinge 18.
7. For this reason, the outer circumference of each pusher piece 14 has a size substantially matching the outer circumference of the movable plate 17, but a flat surface 14 is provided at an intermediate position on the outer circumference side of the pusher piece 14.
b is formed on the movable plate 17, and a flat surface 17a is formed at a position corresponding to the flat surface 14b of the pushing member 14, so that the flat surface 14b of the pushing member 14 and the movable plate The hinge 18 is attached so as to bridge between the flat surface 17a of the base 17 and the flat surface 17a. Each of the pusher pieces 14 is mounted such that the tapered surface 14a faces the direction of the movable plate 17. Also, in the mounted state, the pressing portion 14
The leading end of the tapered surface 14a of FIG. Here, the hinge 18 is provided with a spring, and the urging force of the spring keeps the pushing piece 14 in a state of always contacting the movable plate 17. Therefore, when the movable plate 17 is advanced toward the distal end side, as shown by a solid line in FIG.
Moves while being maintained substantially in a vertical state, and the tapered surface 14a of the pushing member 14 is displaced in a state of substantially slidingly contacting the outer surface of the cylindrical main body 11. On the other hand, when the movable plate 17 is retracted toward the base end side and there is a protruding portion by the elastic ring 8, as shown by the phantom line in FIG. The elastic ring 8 rotates in a direction away from the elastic ring 8 and gets over the elastic ring 8.

Further, in FIG. 2, reference numeral 19 denotes a bellows member 1.
5 is a fluid supply device for supplying and discharging a working fluid, for example, a liquid such as water. The fluid supply device 19 and the bellows member 15
Are connected by a fluid supply tube 19a. The fluid supply tube 19a extends along the insertion section 1 of the endoscope and extends at least to a main body operation section (not shown). The fluid supply device 19 is arranged at a position where the body operation unit or an operator or the like can operate. Therefore, the working fluid is supplied to the bellows member 1 by the fluid supply device 19.
5, the bellows member 15 is advanced, and the working fluid in the bellows member 15 is sucked.
The bellows member 15 can be pulled back to the fixed plate 16 side.

The elastic ring supply device 10 configured as described above is mounted on the distal end main body 1a of the insertion section 1 and guided into the body cavity when performing a procedure such as resection of a varicose vein. When an affected part such as a varicose vein is found as a result of the examination through the observation window 2 of the endoscope, the distal end of the cylindrical main body 11 constituting the airtight hood is pressed so as to surround the affected part. As a result, an airtight hood is formed on the distal end side of the distal end portion main body 1a by the abutment of the tubular main body 11 against the inner wall of the body cavity. At this time, it is preferable that the pressing piece 14 is arranged at a position between the elastic ring 8 located on the most distal end side of the cylindrical main body 11 and the next elastic ring 8. It may be located on the tip side from the position of the ring 8.

In this state, suction is performed by the treatment instrument insertion channel 5. Here, in general, in an endoscope, the treatment tool insertion channel 5 is provided for performing treatment in a body cavity by inserting a treatment tool such as forceps, and the treatment tool insertion channel 5 is It is also used as a suction passage for sucking body fluids and the like. In order to use this as a suction passage, a suction passage leading to a negative pressure source is connected to the treatment tool insertion channel 5, and when performing suction, the treatment tool introduction portion in the treatment tool insertion channel 5 is provided by a plug member. To close. Then, by operating a suction button provided on the main body operation section of the endoscope, a suction force can be applied to the treatment instrument insertion channel 5. Since this mechanism is conventionally known, its illustration and detailed description are omitted.

By the suction force of the treatment instrument insertion channel 5, the entire affected part is swollen so as to enter the airtight hood. This operation is substantially the same as that of the prior art. In this state, when the fluid supply device 19 is operated to supply the working fluid into the bellows member 15 from the fluid supply tube 19a, the movable plate 17 moves to the distal end side of the tubular main body 11. Since the pushing piece 14 is connected to the movable plate 17, the inner peripheral end of the pushing piece 14 is connected to the cylindrical main body 11.
Abuts the elastic ring 8 at the most advanced position attached to the outer surface of the elastic ring 8. If the movable plate 17 is still advanced in this state,
The pushing portion 14 moves forward while being in contact with the movable plate 17, and pushes the elastic ring 8 forward. As a result, the elastic ring 8 is pushed out so as to be pushed out.
Detach from the tip of 1. As a result, the elastic ring 8 is separated from the other elastic rings 8 and supplied to the affected area, and the diameter of the elastic ring 8 thus supplied is reduced to a shape close to a substantially free state, as shown in FIG. As described above, the root part of the affected part is narrowed down, and the affected part is bound.

In this state, the treatment is completed by inserting the injection needle into the treatment instrument insertion channel 5 or inserting the injection needle into the affected part by another route and injecting the sclerosing agent into the affected part. I do.

When a plurality of affected parts are found by endoscopy, the elastic ring 8 is supplied to one affected part and then the bellows member 1 is once supplied by the fluid supply device 19.
The working fluid in 5 is sucked. As a result, the pushing portion 14 is displaced toward the base end of the tubular main body 11 together with the movable plate 17. The inner diameter of the movable plate 17 is the elastic ring 8 attached to the cylindrical main body 11.
Can be passed in a non-contact state. However, since the pushing piece 14 slides substantially on the outer surface of the cylindrical main body 11 and is displaced, the pushing piece 14 is attached to the elastic ring 8 which has already been detached. It contacts the elastic ring 8 at the next position. Here, the portion of the pressing portion 14 that contacts the elastic ring 8 is the tapered surface 1.
4a, and the pushing piece 14 is connected to the movable plate 17 by a hinge 18, and the pushing piece 14 is pivotally displaced about the hinge 18 in a direction away from the movable plate 17. be able to. As a result, as shown by the phantom line in FIG. 4, in conjunction with the retraction of the movable plate 17, the pushing portion 14 rotates backward in the traveling direction, and the pushing portion 14 The tapered surface 14a gets over the elastic ring 8. Then, when the pushing member 14 gets over the elastic ring 8, the pushing member 14 returns to the state of contacting the movable plate 17 by the spring acting on the hinge 18. As a result, the pushing piece 14 is located closer to the base end than the second elastic ring 8 attached to the cylindrical main body 11, and in this state, the suction of the working fluid by the fluid supply device 19 is stopped. Conversely, by feeding the working fluid to the bellows member 15, the elastic ring 8 can be supplied in the same manner as described above. Therefore, the elastic ring 8 can be sequentially supplied to a plurality of affected parts by a simple operation of only sending or sucking the working fluid from the fluid supply device 19 to the bellows member 15.

FIGS. 6 to 8 show a second embodiment of the present invention. In FIG. 6, reference numeral 20 denotes an elastic ring supply device. Has a cylindrical main body 21 provided with a plurality of elastic rings 8 at predetermined intervals, and the elastic rings 8 can be separated and supplied from the cylindrical main body 21 one by one. In order to supply the elastic ring 8, a ring attaching / detaching member 22 and a driving unit 23 are provided. In this respect, there is no particular difference from the first embodiment described above.

The ring attaching / detaching member 22 is composed of a support cylinder 24 and a pushing piece 25 provided at the tip of the support cylinder 24. On the other hand, the driving means 23 includes an annular receiving plate 26 fixedly provided on the outer periphery of the cylindrical main body 21, and slides along the outer peripheral surface of the cylindrical main body 21 at a position in front of the receiving plate 26. A movable operating plate 27 having a movable
6 and the operation plate 27, the operation plate 27 is attached to the cylindrical main body 21.
A spring 28 is provided as urging means for urging in a direction in which the spring 28 is pushed toward the distal end of the spring. A gap of at least the thickness of the elastic ring 8 is formed between the support cylinder 24 and the cylindrical main body 21 that constitute the ring attaching / detaching member 22. The cylindrical body can be reciprocated in the axial direction without being in contact with the elastic ring 8. And the support cylinder 24
Is slightly smaller than the outer diameter of the operation plate 27, so that the support cylinder 24 has a predetermined thickness.

As shown in FIGS. 7 and 8, a notch 2 having a predetermined width
9 are formed, and the notch 29 allows the support cylinder 2 to be formed.
4, four side walls 29a, 29a and an end wall 29b are formed. The rotating shaft 3 is located between the side walls 29a.
0 is provided, and the pushing part 25 divided into four parts is rotatably connected to the rotating shaft 30. The pushing part 25 has an insertion part 25a for the rotation shaft 30 formed by bending the upper end side into an arc shape, and a part below the inner surface of the support cylinder 24 from the insertion part 25a. Is an operating portion 25b that spreads in an arc shape. The outer surface of the cylindrical main body 21 is substantially surrounded by the operating portions 25b of the four pusher pieces 25 provided at four locations. It comes to almost contact with. The surface of the actuating portion 25b of the pushing piece 25 is curved so as to be warped toward the distal end, and its concave surface is directed toward the distal end. Therefore, the convex surface of the operating portion 25b faces the base end, and the insertion portion 25a
The transition part from to the operating part 25b has a vertical plane shape,
The support tube 24 is assembled so as to contact the end wall 29b of the notch 29 of the support tube 24. The upper end of the insertion portion 25a has an arcuate surface shape whose radius is the center of rotation by the rotation shaft 30. Further, although not shown, the pushing member 25 is provided with a spring for urging the pushing member 25 in a direction in which it contacts the end wall 29b of the notch 29.

Further, a cover tube 31 is fixedly provided on the receiving plate 26, and the cover tube 31 extends to a position slightly protruding from the front end of the tubular main body 21 and has a front end. Is formed with an inward bent portion 31a. An annular gap through which the elastic ring 8 passes is formed between the bent portion 31a and the distal end surface of the tubular main body 21. The operating plate 27 slides on the cylindrical main body 21 and is also guided by the cover cylinder 31 so that the cylindrical main body 2
It is designed to reciprocate in the direction of one axis. The support cylinder 24 connected to the operation plate 27 can be advanced to a position where the tip end surface contacts the bent portion 31a of the cover cylinder 31. In addition, at the most advanced position of the support cylinder 24, the operating portion 25 b of the pushing piece 25 attached to the support cylinder 24 is in a state of slightly protruding from the tip of the support cylinder 24.

As described above, the operating plate 27 is provided with the spring 2.
8, the tip of the support tube 24 connected to the operating plate 27 is normally held at a position where it comes into contact with the bent portion 31 a of the cover tube 31 by the action of the spring 28. . Then, the operation plate 27 is pulled back to the base end side against the urging force of the spring 28, and the operation plate 32 is displaced to the base end side.
Are connected. The operation wire 32 is inserted into a guide tube 33 fixedly provided on the receiving plate 26 and extends along the insertion portion 1 to the main body operation portion. Therefore, when the operation wire 32 is pulled, the operation plate 2
7 and the support plate 24 constituting the ring attaching / detaching member 22 fixedly provided on the operation plate 27 is displaced toward the base end.

With the above-described structure, the elastic rings 8 can be supplied to the affected part one by one by substantially the same operation as in the first embodiment. At the time of supplying the elastic ring 8, the operation wire 32 is pulled so that the pushing piece 25 is moved over the elastic ring 8 attached to the cylindrical main body 21 as shown by a virtual line in FIG. When the pulling force on the wire 32 is released,
As shown by the solid line in FIG.
While the b pushes the elastic ring 8, the tip of the support tube 24 is displaced to a position where it comes into contact with the bent portion 31 a of the cover tube 31.
1 and is supplied from the gap between it and the bent portion 31a of the cover tube 31.

[0027]

Since the present invention is constructed as described above, it is possible to smoothly and reliably separate and supply a large number of elastic rings one by one.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a state in which an elastic ring supply device according to a first embodiment of the present invention is mounted on an endoscope.

FIG. 2 is an external view of FIG.

FIG. 3 is an external view showing a mechanism for connecting a ring attaching / detaching member to driving means.

FIG. 4 is an operation explanatory view of a ring attaching / detaching member.

FIG. 5 is a sectional view similar to FIG. 1, showing a state in which an elastic ring is detached.

FIG. 6 is a sectional view showing a state in which the elastic ring supply device according to the first embodiment of the present invention is mounted on an endoscope.

FIG. 7 is an external view of a ring attaching / detaching member.

FIG. 8 is an operation explanatory view of a ring attaching / detaching member.

FIG. 9 is a cross-sectional view of a state in which a conventional elastic ring supply device is mounted on an endoscope.

FIG. 10 is an explanatory diagram of an operation state of the elastic ring supply device of FIG. 9;

11 is an explanatory diagram of a state where the affected part of the elastic ring supply device of FIG. 9 is being suctioned.

FIG. 12 is an explanatory diagram showing a state where an elastic ring is supplied by the elastic ring supply device of FIG. 9;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Insertion part 1a Tip main body 8 Elastic ring 10, 20, 30 Elastic ring supply device 11, 21 Cylindrical main body 12, 22 Ring attaching / detaching member 13, 23 Driving means 14, 25 Pushing piece 15 Bellows member 16 Fixing plate 17 Movable plate 18 Hinge 19 Fluid supply device 26 Receiving plate 27 Operating plate 28 Spring 32 Operation wire 33 Guide tube

Claims (7)

[Claims] An airtight hood is connected to a distal end of an insertion portion provided with a suction passage, and a plurality of elastic rings are mounted on an outer surface of the airtight hood so as to be expanded. A hermetic hood, a cylindrical body having an elastic ring mounted on an outer peripheral surface thereof, and a ring detachable member for detaching the elastic ring mounted on the cylindrical body by pushing the elastic ring toward the distal end side. And a drive unit for reciprocating the ring detachable member in the axial direction of the airtight hood, wherein the ring detachable member is held in a state of substantially contacting the outer surface of the cylindrical body when moving in the distal direction, and has a base end. An elastic ring supply device, comprising: a pushing portion that can be displaced in a direction away from the outer surface of the cylindrical body when moving in the direction. 2. The push-moving part constituting the ring attaching / detaching member comprises a plurality of pieces having a predetermined angle, and the driving means is provided with an annular push-pull member, and each of the pushing-moving parts is provided. 2. The elastic ring supply device according to claim 1, wherein the piece is configured to abut on an end face of the push-pull member and to be rotatably connected in a direction away from the end face. 3. The ring attaching / detaching member has a support member for supporting the pushing member, and a notch is formed at a distal end side of the support member at predetermined intervals in a circumferential direction, and each of the notches is formed. The notch is provided with a rotating shaft, and the pushing piece is divided into a plurality of pieces and is abutted on the end wall of each notch, and is rotatably mounted on each of the rotating shafts. The elastic ring supply device according to claim 1, wherein 4. A structure according to claim 2, wherein each of said pushing pieces is provided with an urging means for urging said pressing member so as to substantially contact an outer surface of said tubular main body. Elastic ring feeder. 5. The apparatus according to claim 1, wherein said driving means includes an annular push / pull member slidably fitted to said tubular main body, and said push / pull member is connected to a support member of said ring attaching / detaching member. The elastic ring supply device according to claim 4, wherein 6. The driving means has a bellows member provided to be fitted to the tubular main body, and by supplying and discharging a fluid to and from the bellows member, reciprocates the ring detachable member in the axial direction. The elastic ring supply device according to claim 1, wherein the elastic ring supply device has a configuration. 7. The driving means comprises a fixed part and a movable part, and between the fixed part and the movable part, there is provided a biasing means for biasing the movable part toward the distal end of the tubular main body. Along with
2. The elastic ring supply device according to claim 1, wherein an operation member for pulling back to a base end side of the cylindrical main body against the urging means is connected to the movable portion.