JP2007159813A - Forceps plug of endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forceps plug of an endoscope, which is capable of smoothly and securely attaching a lid to a forceps plug body since air inside the space enclosed by an annular wall of the lid is easily discharged to the outside in attaching the lid to the forceps plug body. <P>SOLUTION: A ventilation groove 28 is provided in an inward projection 23 part to discharge air inside the space A to the outside by making the space A enclosed by the annular wall 22 of the lid 12 communicate with the outside when the inward projection 23 part of the lid 12 is elastically deformed to be slid along the outer peripheral surface 24 of the forceps plug body 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an endoscopic forceps plug for elastically sealing an entrance portion of a treatment instrument insertion channel so that in-vivo sewage or the like does not jet out of the endoscope through the treatment instrument insertion channel.

  As shown in FIG. 10, for example, the forceps plug of an endoscope is generally a cylindrical forceps plug main body 91 whose base is attached to an inlet base 81 of a treatment instrument insertion channel 80 of the endoscope, and the forceps plug main body 91. A lid 92 that is detachably attached to the tip entrance portion of the projection is formed by an elastic member, and a slit 93 or a small hole 94 that is pushed open by the treatment instrument inserted into the treatment instrument insertion channel 80 is formed. The closing films 95 and 96 are provided on the lid 92 and the forceps plug body 91.

In order to lock the lid 92 to the forceps plug main body 91, a circumferential groove 99 is formed on the outer peripheral surface of the forceps plug main body 91 so as to protrude from the lid 92 side so as to surround the forceps plug main body 91. An annular inward projection 98 that can be freely engaged with and disengaged from the circumferential groove 99 is formed at the front end portion of the annular wall 97 provided so as to protrude over the entire circumference (for example, Patent Document 1).
JP 2001-218732 A

  In the forceps plug of the endoscope as described above, when the lid 92 is attached to the forceps plug main body 91, as shown in FIGS. By sliding the plug body 91 along the outer peripheral surface of the plug body 91, the plug body 91 is engaged with the circumferential groove 99.

  However, in the process of changing from the state shown in FIG. 11 to the state shown in FIG. 12, the air passage leading from the space A surrounded by the annular wall 97 of the lid 92 to the outside of the space A is a small hole 94. It becomes only a part, and all other parts are in a blocked state.

  Therefore, when the lid 92 is attached to the forceps plug main body 91, the air in the space A surrounded by the annular wall 97 is compressed, which is a large amount for the operation of attaching the lid 92. There was a risk that the lid 92 could not be attached smoothly, or the lid 92 could be used without being properly attached, causing in-body spillage to be ejected.

  Therefore, the present invention allows the air in the space surrounded by the annular wall of the lid body to be easily discharged to the outside during the operation of attaching the lid body to the forceps plug body, so that the lid body is smoothly and reliably attached to the forceps plug body. An object of the present invention is to provide an endoscopic forceps plug that can be attached.

  In order to achieve the above object, the forceps plug of the endoscope according to the present invention includes a cylindrical forceps plug body whose base is attached to the entrance portion of the treatment instrument insertion channel of the endoscope, and a protruding end inlet portion of the forceps plug body The lid body, which is detachably attached to the body, is formed of an elastic member, and a closure film that is pushed open by the treatment instrument inserted into the treatment instrument insertion channel is provided on the forceps plug body and the lid body. A forceps plug of an endoscope, wherein a circumferential groove is formed on the outer peripheral surface of the forceps plug body, and the circumferential groove is formed on the distal end portion of an annular wall projecting from the lid body so as to surround the forceps plug body. An annular inward projection that can be freely engaged and disengaged is formed, and the inward projection portion of the lid body is elastically deformed and slid along the outer peripheral surface of the forceps plug main body to slide it around the circumference. In the forceps plug of the endoscope that is engaged with the groove, A vent groove that allows the space surrounded by the annular wall of the lid body to communicate with the outside and to discharge the air in the space to the outside when elastically deforming the projection and sliding along the outer peripheral surface of the forceps plug body , Provided on the inward projection portion.

  Note that one or a plurality of ventilation grooves may be formed in the inner peripheral portion of the inward projection with a mutual interval in the circumferential direction.

  According to the present invention, when the inward protruding portion of the lid is elastically deformed and slid along the outer peripheral surface of the forceps plug body, the space surrounded by the annular wall of the lid is communicated with the outside. By providing a vent groove in the inward projection that discharges the air to the outside, the air in the space surrounded by the annular wall of the lid can be easily removed to the outside during the operation of attaching the lid to the forceps plug body. The lid body can be smoothly and reliably attached to the forceps plug main body, and the in-situ body effluent can be prevented from being ejected from the treatment instrument insertion channel due to the uncertain attachment.

  A cylindrical forceps plug main body whose base is attached to the entrance portion of the treatment instrument insertion channel of the endoscope and a lid body detachably attached to the protrusion inlet portion of the forceps plug main body are both formed of an elastic member. The closure film pushed open by the treatment instrument inserted into the treatment instrument insertion channel is an endoscope forceps plug provided on the forceps plug body and the lid body, and a circumferential groove is formed on the outer peripheral surface of the forceps plug body. An annular inward projection that can be engaged with and disengaged from the circumferential groove is formed at the tip of the annular wall protruding from the lid body so as to surround the forceps plug body. In the forceps plug of the endoscope, the inward protruding portion is elastically deformed and slid in a state of being pushed and expanded along the outer peripheral surface of the forceps plug body. Along the outer peripheral surface of the forceps plug body by elastically deforming the inward projection Communicates the space and the outside surrounded by the annular wall of the lid when sliding with the ventilation grooves to discharge the air in the space to the outside is provided inwardly projecting portion.

Embodiments of the present invention will be described with reference to the drawings.
In FIG. 4, reference numeral 1 denotes an insertion portion of the endoscope, and 2 denotes an operation portion connected to the proximal end of the insertion portion 1.

  A treatment instrument insertion channel 3 for inserting a treatment instrument (not shown) is inserted through the entire length of the insertion section 1, and the entrance opening of the treatment instrument insertion channel 3 disposed at the lower end of the operation section 2. A forceps plug 10 is detachably attached to the part so as to prevent body sewage or the like flowing backward through the treatment instrument insertion channel 3 from blowing out.

  As shown in FIG. 1 showing an enlarged cross section of the forceps plug 10, the forceps plug main body 11 formed in a cylindrical shape to be attached to the inlet base 4 of the treatment instrument insertion channel 3 and the protruding end of the forceps plug main body 11. The inlet portion 15 has a detachable lid 12 and the whole is made of an elastic rubber material or the like.

  A portion of the inner surface of the forceps plug main body 11 near the proximal end is formed with a small diameter portion 13 that can be engaged with and disengaged from the inlet base 4 of the treatment instrument insertion channel 3. The base 4 can be attached and removed in a tightened state. In FIG. 1, the non-elastically deformed shape of the small-diameter portion 13 is shown overlapping the inlet base 4.

  As shown in FIG. 2 illustrating a state in which the lid body 12 is removed from the forceps plug body 11, the lid body 12 is a connecting string-like member formed integrally with the lid body 12 by an elastic rubber material. 14 is connected to the base of the forceps plug main body 11 so that even if the forceps plug main body 11 is removed from the forceps plug main body 11, the forceps plug main body 11 is hung in the vicinity thereof.

  Closure films 16 and 17 are formed in the forceps plug body 11 and the lid body 12, respectively, and the closure film 16 in the forceps plug body 11 is pushed open by a treatment tool inserted into the treatment tool insertion channel 3. A small hole 18 is formed, and a slit 19 that is pushed open by a treatment instrument inserted into the treatment instrument insertion channel 3 is formed in the closing film 17 of the lid 12.

  Therefore, in the state shown in FIG. 1 in which the lid 12 is attached to the forceps plug body 11 and the treatment instrument is not used, the body sewage or the like can be removed from the treatment instrument insertion channel 3 by the slit 19 formed in the lid 12. Sealed to prevent ejection.

  When a treatment tool (not shown) is inserted into and removed from the treatment tool insertion channel 3, the space between the small hole 18 and the outer peripheral surface of the treatment tool is sealed by the slit 19, and the treatment tool insertion channel 3 is filled with a syringe. In the case of feeding a chemical solution or the like, the lid 12 can be removed to make the small hole 18 a chemical solution passage.

  A circumferential groove 21 is formed over the entire circumference on the outer peripheral surface of the forceps plug body 11 near the protruding end side inlet portion 15 so as to surround the periphery of the portion near the protruding end side inlet portion 15 of the forceps plug body 11. An annular wall 22 is formed to protrude from the lid 12 side.

  An annular inward protrusion 23 that can be engaged with the circumferential groove 21 over the entire circumference is formed so as to protrude inward from the entire circumference of the inner peripheral portion of the tip portion of the annular wall 22, The protrusion 23 can be engaged with and disengaged from the circumferential groove 21 by being elastically deformed in a state of being pushed and expanded along the outer peripheral surface 24 of the forceps plug body 11.

  On the outer peripheral surface 24 closer to the projecting end side inlet portion 15 than the circumferential groove 21 of the forceps plug main body 11, the inner projection 23 comes into contact with when the inner projection 23 is engaged with the circumferential groove 21, two circumferences are provided. The projections 25 (first circumferential projections 25a and second circumferential projections 25b) are formed so as to project at an interval in the axial direction. In FIG. 1, the shape in which the first and second circumferential protrusions 25 a and 25 b are not elastically deformed is overlapped with the annular wall 22.

  The first circumferential protrusion 25a is formed so as to protrude over the entire circumference in a portion adjacent to the circumferential groove 21, and the second circumferential protrusion 25b is spaced from the first circumferential protrusion 25a. Thus, it is formed so as to protrude over the entire circumference at the end on the protruding end side inlet portion 15 side.

  Further, as shown in the perspective view of FIG. 3, the inner protrusion 23 of the lid 12 has an arc shape in which the inner peripheral portion of the inner protrusion 23 is cut out so as not to reach the outer peripheral side of the annular wall 22. A ventilation groove 28 is formed. In this embodiment, the ventilation grooves 28 are provided at three positions at intervals of 120 ° with an interval between each other in the circumferential direction.

  The ventilation groove 28 is formed so that the inside of the space A communicates with the outside when the opening side end portion of the space A surrounded by the annular wall 22 is sealed by the inner peripheral portion of the inward projection 23. Compared with the small hole 18, for example, it is formed with a remarkably large ventilation cross-sectional area of about 10 times to several tens of times.

  FIGS. 5 and 6 sequentially show the operation when the lid 12 is attached to the forceps plug body 11, and the inner protrusion 23 portion of the lid 12 is elastically deformed to form the outer peripheral surface 24 of the forceps plug body 11. 5 is slid from the state of FIG. 5 to the state of FIG. 6, the air in the space A surrounded by the annular wall 22 is quickly discharged to the outside through the ventilation groove 28.

  Therefore, the lid 12 can be smoothly and reliably attached to the forceps plug body 11 until the inward projection 23 of the lid 12 is correctly engaged with the circumferential groove 21 of the forceps plug body 11, and the attachment is uncertain. It is possible to prevent in-vivo squirt from the treatment instrument insertion channel.

  When the inward projection 23 is elastically deformed into a state where the inner projection 23 is in contact with the outer peripheral surface 24 of the forceps plug main body 11 and is expanded, the lid body is first moved when the inward projection 23 gets over the second circumferential projection 25b. The operator can attach a tactile click feeling to the operator's hand, and the operator can detect by hand feeling that the inward projection 23 has moved to a position facing the outer peripheral surface 24 of the forceps plug body 11.

  When the inward projection 23 gets over the first circumferential projection 25a and engages with the circumferential groove 21, the same click feeling is again transmitted to the operator's hand, and the inward projection 23 is in the circumferential groove. The operator can detect by hand feeling that the state has been engaged with 21.

  In this way, when the inner projection 23 is engaged with the circumferential groove 21 as shown in FIG. 1, the first circumferential projection 25a and the second circumferential projection 25b are respectively sealed O-rings. The outer circumferential surface of the first circumferential projection 25a and the outer circumferential surface of the second circumferential projection 25b are elastically pressed against the inner circumferential surface of the annular wall 22 and are in close contact with each other. , That portion is sealed.

  In the present invention, the shape and size of the ventilation groove 28 can take various embodiments. For example, as shown in FIGS. The distance may be two or four at 90 ° intervals, or may be divided into four or more although not shown, and the shape does not necessarily need to be an arc when dispersed in a large number.

It is side surface sectional drawing of the forceps stopper of the endoscope of 1st Example of this invention. It is side surface sectional drawing of the state from which the cover body of the forceps plug of the endoscope of the 1st Example of this invention was removed from the forceps plug main body. It is a perspective view of the lid part of the forceps plug of the endoscope according to the first embodiment of the present invention. 1 is a side view illustrating an overall configuration of an endoscope according to a first embodiment of the present invention. It is side surface sectional drawing of operation | movement at the time of attaching the cover body of the forceps plug of the endoscope of 1st Example of this invention to a forceps plug main body. It is side surface sectional drawing of operation | movement at the time of attaching the cover body of the forceps plug of the endoscope of 1st Example of this invention to a forceps plug main body. It is a rear view of the lid of the forceps plug of the endoscope according to the second embodiment of the present invention. It is a rear view of the lid of the forceps plug of the endoscope according to the third embodiment of the present invention. It is a rear view of the lid of the forceps plug of the endoscope according to the fourth embodiment of the present invention. It is side surface sectional drawing of the forceps stopper of the conventional endoscope. It is side surface sectional drawing of an operation | movement at the time of attaching the lid body of the forceps plug of the conventional endoscope to the forceps plug main body. It is side surface sectional drawing of an operation | movement at the time of attaching the lid body of the forceps plug of the conventional endoscope to the forceps plug main body.

Explanation of symbols

3 treatment instrument insertion channel 10 forceps plug 11 forceps plug main body 12 lid body 16 closing membrane 17 closing membrane 18 small hole 19 slit 21 circumferential groove 22 annular wall 23 inward projection 24 outer circumferential surface 28 ventilation groove A surrounded by annular wall space

Claims (2)

A cylindrical forceps plug body whose base is attached to the entrance portion of the treatment instrument insertion channel of the endoscope and a lid body that is detachably attached to the protrusion entrance portion of the forceps plug body are both formed of an elastic member. The closure film to be pushed open by the treatment instrument inserted into the treatment instrument insertion channel is an endoscope forceps plug provided on the forceps plug body and the lid body,
A circumferential groove is formed on the outer peripheral surface of the forceps plug body, and the distal end portion of the annular wall protruding from the lid body so as to surround the periphery of the forceps plug body is detachable with respect to the circumferential groove. An annular inward protrusion is formed to project, and the inward protrusion portion of the lid is elastically deformed and slid along the outer peripheral surface of the forceps plug body so as to slide on the circumferential groove. In the forceps plug of the endoscope,
When the inner projecting portion of the lid body is elastically deformed and slid along the outer peripheral surface of the forceps plug body, the space enclosed by the annular wall of the lid body communicates with the outside, and the air in the space A forceps plug for an endoscope, characterized in that a vent groove is provided in the inward projection portion for discharging the air to the outside.   2. The endoscopic forceps plug according to claim 1, wherein one or a plurality of the ventilation grooves are formed in the inner peripheral portion of the inward projection at a distance from each other in the circumferential direction.

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