JP2011182956A - Attachment for prevention of degassing, overtube and overtube set equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attachment for the prevention of degassing, an overtube and an overtube set equipped with it, where all lesion tissues cut in an endoscope-related operation are taken out without damages, and the attachment always prevents the supplied air from escaping through all clearances in the endoscope in whatever action or position the endoscope may take, and the attachment does not come off from the overtube. <P>SOLUTION: The nearly cylindrical attachment 4 for preventing degassing is installed on a mouthpiece detachable part 3 added to the base end of an overtube where an endoscope inserted through it is free to slide forward and back. The attachment 4 for preventing degassing consists of a rotary operation frame 6 and a fixation frame 7 installable on the mouth piece detachable part 3. The attachment 4 includes a sleeve 5 for degassing prevention, of which at least one side is fixed to the inside of the operation frame 6 to prevent degassing from around the endoscope the attachment is inserted through. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to an attachment for preventing deaeration, an overtube provided with the attachment, and an overtube set.

The overtube is used for safely and smoothly inserting and removing the endoscope from and into the body lumen (for example, see Patent Document 1). Usually, a deaeration prevention valve is attached to the base end portion of the overtube so that the air supplied from the endoscope does not leak.

  Generally, the deaeration prevention valve used for the overtube is made of an elastic member such as rubber or silicone rubber that has a follow-up property to the operation of the endoscope, and is attached to a part of the overtube or an attachment (adapter). It is fixed (for example, refer to Patent Document 2).

Conventionally, when endoscopic mucosal resection (hereinafter abbreviated as EMR) is performed to endoscopically remove mucosal layers such as the esophagus, stomach, and large intestine, the lesion tissue is divided with a snare for large lesions. However, because the excised lesion tissue is relatively small, even if it is the structure and shape of the endoscope insertion part of the deaeration prevention valve for EMR, the lesion tissue is not damaged. It was possible to take it out.

In recent years, endoscopic submucosal dissection (hereinafter abbreviated as ESD) for endoscopically removing submucosal layers such as the esophagus, stomach, and large intestine has been rapidly spreading. In ESD, after the high-frequency treatment instrument is protruded from the forceps hole of the endoscope, the endoscope is operated between the endoscope and the deaeration prevention valve in order to operate the high-frequency treatment instrument by an operation such as forward and backward rotation of the endoscope itself. There is a problem that gaps are likely to occur in the endoscope, and the field of view of the endoscope deteriorates due to air leakage.

In addition, when an EMR deaeration prevention valve is used for ESD, since the endoscope insertion hole of the deaeration prevention valve has a relatively small diameter, when removing the excised diseased tissue together with the endoscope, the deaeration prevention valve There was a problem that the diseased tissue was damaged during passage or the entire volume could not be removed.
Furthermore, since the conventional deaeration prevention valve is detachable from the overtube, there is a possibility that when it is removed from the overtube, it falls off to the floor or the like and becomes unclean.

JP 2005-046273 A Registered utility model 3129543

In the present invention, in endoscopic surgery, it is possible to remove the excised lesion tissue without damaging it, and to ensure that the air supplied to any operation of the endoscope escapes from the gap with the endoscope. An object of the present invention is to provide an attachment for preventing deaeration that can be prevented and does not fall off from the overtube, and an overtube and an overtube set including the attachment.

The said subject is solved by this invention as described in following (1)-(7).
(1) A substantially cylindrical deaeration prevention attachment attached to a mouthpiece attaching / detaching member attached to a proximal end side of an overtube that is inserted through an endoscope so as to be capable of moving forward and backward.
The deaeration prevention attachment includes an operation frame that enables a rotation operation and a fixing frame that can be attached to the mouthpiece attaching / detaching member.
A deaeration prevention attachment comprising a deaeration prevention sleeve having at least one side fixed to the inside of the operation frame and preventing deaeration from around the inserted endoscope.
(2) The deaeration prevention attachment according to (1), wherein the other side of the deaeration prevention sleeve is fixed to the inside of the fixing frame or the mouthpiece attaching / detaching member.
(3) The deaeration prevention sleeve according to (1) or (2), wherein the deaeration prevention sleeve is provided with a first fixing member on a proximal end side and a second fixing member on a distal end side.
(4) The deaeration prevention sleeve is formed of a material selected from natural rubber, synthetic rubber, polyurethane elastomer, styrene-butadiene copolymer, and silicone rubber, and any one of (1) to (3) Attachment for preventing deaeration as described in 1.
(5) The deaeration prevention attachment according to any one of (1) to (4), wherein the base end portion end surface of the operation frame has at least two finger hook portions.
(6) An overtube in which the deaeration preventing attachment according to any one of (1) to (5) and the mouthpiece attaching / detaching member are connected.
(7) An overtube set in which the overtube according to (6) and the mouthpiece are set in a sterile bag.

According to the present invention, in endoscopic surgery, the excised diseased tissue can be removed without being damaged, and the air supplied to any operation of the endoscope can escape from the gap with the endoscope. An attachment for preventing deaeration that can be reliably prevented and does not fall off from the overtube, an overtube and an overtube set including the attachment can be provided.

It is a front view of an overtube provided with the attachment for deaeration prevention and a mouthpiece which become one example of the present invention. The enlarged view by the side of the base end part of the state where the endoscope insertion part of the overtube provided with the deaeration prevention attachment used as one example of the present invention opened is shown, (A) is a front view (partial sectional view) , (B) are plan views. The enlarged view by the side of the base end part of the state where the endoscope insertion part of the overtube provided with the deaeration prevention attachment used as one example of the present invention closed a certain amount is shown, (A) is a front view (partial section) (FIG.), (B) is a top view. FIG. 5 is an enlarged view (partially sectional view) of the base end side when the deaeration prevention attachment is removed in the overtube including the deaeration prevention attachment according to one embodiment of the present invention.

Hereinafter, the deaeration prevention attachment of the present invention, an overtube and an overtube set including the attachment will be described in detail based on preferred embodiments shown in the drawings.

The deaeration prevention attachment (4) of the present invention is substantially cylindrical as shown in FIGS. 1 and 2, and is attached to the proximal end side of the overtube (1) which is inserted through an endoscope (not shown) so as to be able to advance and retract. It is attached to the attached mouthpiece attaching / detaching member (3). This deaeration-preventing attachment is composed of an operation frame (6) that enables a rotating operation and a fixing frame (7) that can be attached to a mouthpiece attaching / detaching member (3), and at least one side is A deaeration-preventing sleeve (5) is provided which is fixed to the inside of the operation frame (6) and prevents deaeration from around the inserted endoscope.

As shown in FIG. 2, the deaeration prevention sleeve (5) has an endoscope insertion portion (13), and when the operation frame (6) is rotated by a predetermined angle, which will be described later, the endoscope The insertion portion (13) is configured to open and close. By having such a deaeration preventing sleeve (5), it is possible to prevent deaeration from around the inserted endoscope.

As shown in FIG. 2, when the operation frame (6) is rotated by a predetermined angle from the state where the endoscope insertion portion (13) is open, the deaeration prevention sleeve (5) is twisted as shown in FIG. The endoscope insertion portion (13) can be closed according to the rotation angle. Further, when the operation frame (6) is rotated in the reverse direction after the endoscope insertion portion (13) is closed by a predetermined amount, the twist of the deaeration prevention sleeve (5) is eliminated as shown in FIG. The endoscope insertion portion (13) can be opened according to the rotation angle. Thus, since the size of the endoscope insertion portion (13) can be adjusted according to the outer diameter of the endoscope to be inserted, the endoscope insertion portion (13) regardless of the outer diameter of the endoscope. ) Can be minimized.

The operation frame (6) is preferably rotated within a range of 20 degrees to 360 degrees. By rotating within this angle range, deaeration from around the inserted endoscope can be reliably prevented.

The material for the deaeration prevention sleeve (5) is preferably formed of a material selected from natural rubber, synthetic rubber, polyurethane elastomer, styrene-butadiene copolymer, and silicone rubber, and friction with the endoscope. In order to improve the properties, it is also preferable to use the above-mentioned material containing oil.

As described above, at least one side of the deaeration prevention sleeve is fixed inside the operation frame (6), but the other side is fixed inside the fixing frame (7) or the mouthpiece attaching / detaching member (3). It is preferably fixed. If it is fixed to the fixing frame (7), the deaeration preventing attachment itself can be made into a compact shape, and if it is fixed to the mouthpiece attaching / detaching member (3), it will also have the effect of preventing dropout described later. be able to.

It is preferable that a first fixing member (8) is attached to the proximal end portion side of the deaeration preventing sleeve (5) and a second fixing member (9) is attached to the distal end portion side. These fixing members are preferably ring-shaped, and the first fixing member (8) is preferably fixed inside the operation frame (6). The second fixing member (9) can be fixed to the inside of the fixing frame (7) as shown in FIGS. 2 to 4, but is fixed to the mouthpiece attaching / detaching member (3) as described above. It doesn't matter.

The material of the deaeration prevention sleeve (5) is not particularly limited, but is preferably a material that is thin and can be fixed with sufficient strength to withstand the frictional force with the endoscope. For example, hard polyvinyl chloride resin, hard polyurethane resin It is preferably formed of a material selected from polyethylene resin, polyamide resin, polypropylene resin, polyacetal resin, and fluorinated polyethylene resin.

It is preferable to have at least two finger hooks (10) on the end surface of the base end of the operation frame (6). When the operation frame (6) is rotated, the endoscope insertion portion (13) can be easily opened and closed by pressing the finger hooking portion (10) with a finger and rotating it clockwise and counterclockwise.
Two finger hooks (10) may be formed facing each other with respect to the central axis of the operation frame (6), and further three at a 120 degree angle with respect to the central axis, or Four may be formed at an angle of 90 degrees with respect to the central axis.

  The finger-hanging part (10) is preferably formed integrally with the operation frame (6). These materials are, for example, hard vinyl chloride resin, polyurethane resin, polyethylene resin, polyamide resin, polypropylene resin, polyacetal resin, fluorine A polyethylene resin or the like can be used.

As shown in FIG. 4, the overtube (1) of the present invention is characterized in that the deaeration prevention attachment (4) of the present invention and the mouthpiece attaching / detaching member (3) are connected. .
Since the conventional deaeration prevention valve is detachable from the overtube, there is a possibility that when it is removed from the overtube, it falls off to the floor or the like and becomes unclean.
The connection method between the deaeration preventing attachment (4) and the mouthpiece attaching / detaching member (3) is not particularly limited. However, in order to simplify the components, as shown in FIG. 4, the connecting member (12) It is preferable to connect with.
By providing the connecting member (12) between the fixing frame (7) and the mouthpiece attaching / detaching member (3), the fall from the overtube (1) when the deaeration preventing attachment (4) is removed is prevented. Can be prevented.

Further, as shown in FIG. 2, it is preferable to have the locking means (11) at the lower part of the fixing frame (7), and the locking means (11) can be detached by fitting it into the mouthpiece attaching / detaching member (3). A care prevention attachment (4) can be attached to the overtube (1).

The fixing frame (7) and the mouthpiece attaching / detaching member (3) may be formed integrally or separately. As these materials, for example, hard vinyl chloride resin, polyurethane resin, polyethylene resin, polyamide resin, polypropylene resin, polyacetal resin, fluorinated polyethylene resin and the like can be used. When integrally molding, polyethylene resin, polyamide resin and polypropylene resin are preferable from the viewpoint of durability of the connecting portion.

Furthermore, as shown in FIG. 1, the overtube set of the present invention is a book in which the deaeration prevention attachment (4) and the mouthpiece attaching / detaching member (3) are connected by a connecting member (12). The overtube (1) of the invention and the mouthpiece (2) are set in a sterile bag. With such a set content, it is possible to cope with an emergency.

The present invention has been described based on the embodiments. It is to be understood by those skilled in the art that these embodiments are merely examples, and that various modifications are possible and that such modifications are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Overtube 2 Mouthpiece 3 Mouthpiece attachment / detachment member 4 Deaeration prevention attachment 5 Sleeve 6 Operation frame 7 Fixing frame 8 First fixing member 9 Second fixing member 10 Finger hook part 11 Locking means 12 Connecting member 13 Inside Endoscope insertion part

Claims (7)

A substantially cylindrical deaeration prevention attachment attached to a mouthpiece attaching / detaching member attached to a proximal end side of an overtube that is inserted through an endoscope so as to be movable forward and backward,
The deaeration prevention attachment includes an operation frame that enables a rotation operation and a fixing frame that can be attached to the mouthpiece attaching / detaching member.
A deaeration prevention attachment comprising a deaeration prevention sleeve having at least one side fixed to the inside of the operation frame and preventing deaeration from around the inserted endoscope. The deaeration prevention attachment according to claim 1, wherein the other side of the deaeration prevention sleeve is fixed to the inside of the fixing frame or the mouthpiece attaching / detaching member. The deaeration prevention attachment according to claim 1 or 2, wherein the deaeration prevention sleeve is provided with a first fixing member on a proximal end side and a second fixing member on a distal end side. The degassing sleeve according to any one of claims 1 to 3, wherein the degassing prevention sleeve is formed of a material selected from natural rubber, synthetic rubber, polyurethane elastomer, styrene-butadiene copolymer, and silicone rubber. Attachment for prevention. The attachment for deaeration prevention according to any one of claims 1 to 4 which has at least two finger hooks on the end face of the base end of the operation frame. An overtube comprising the deaeration preventing attachment according to any one of claims 1 to 5 and the mouthpiece attaching / detaching member. The overtube set according to claim 6, wherein the overtube and the mouthpiece are set in a sterilized bag.

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