JP2006055446A - Forcep plug for endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forcep plug for an endoscope capable of preventing a user from erroneously reusing a used forcep plug for the endoscope. <P>SOLUTION: This forcep plug 1 for the endoscope to be used by being detachably mounted on the proximal end opening part 161 of a treating tool insertion channel of the endoscope is provided with a plug body 2 to be engaged with the proximal end opening part 161 at the time of being mounted. The plug body 2 is provided with a low strength part 211 whose strength is lower than the other part of the plug body 2, and when the plug body 2 is detached from the proximal end opening part 161, the low strength part 211 is irreversibly deformed so as to turn the plug body 2 to a non-reusable state. It is preferable that the low strength part 211 is that by a cut formed so as to leave a part of it on the plug body 2 and it is preferable that it is broken at the time of the detachment. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an endoscopic forceps plug that is detachably attached to an end of a treatment instrument insertion channel of an endoscope.

  A treatment instrument insertion channel (passage) for inserting and using treatment tools such as forceps, an incision tool, a ligation tool, and various sensors is provided inside the insertion portion of the endoscope. With the endoscope insertion portion inserted into the body cavity, various treatment tools such as those described above are inserted from the proximal end opening of the treatment tool insertion channel and protruded from the distal opening to perform various treatments. be able to.

  An endoscopic forceps plug made of an elastic material such as rubber is detachably installed in the proximal end opening of the treatment instrument insertion channel to prevent leakage of liquid in the body cavity to the outside. ing. The endoscopic forceps plug is usually formed with a slit, and the slit is opened to insert the treatment instrument into the treatment instrument insertion channel. When the treatment tool is removed, the slit automatically closes due to elasticity to prevent leakage of liquid or the like in the body cavity.

  Such a forceps plug for an endoscope is made disposable so that it can be replaced with a new one every time it is used from the viewpoint of infection control because a body fluid or the like adheres to it.

  However, even if the conventional forceps plug for endoscope is once used and removed from the proximal end opening of the treatment instrument insertion channel, it remains in a state where it can be reattached to the proximal opening. There is a risk that the user may reuse it by mistake. Moreover, even if it is used, since it is not clear whether it is unused or used in appearance, there is a possibility that the user may accidentally reuse it.

Japanese Patent No. 3441563

  An object of the present invention is to provide an endoscopic forceps plug that can prevent a user from erroneously reusing a used endoscopic forceps plug.

Such an object is achieved by the present inventions (1) to (10) below.
(1) A forceps plug for an endoscope that is used by being detachably attached to an end portion of a treatment instrument insertion channel of an endoscope,
A main body that engages with the end when mounted;
The main body has a low-strength portion whose strength is lower than that of other portions in a part thereof, and the low-strength portion is irreversibly deformed when the main body is detached from the end portion. A forceps plug for an endoscope, characterized in that it can be recognized as having been completed.

  As a result, the used endoscopic forceps plug is deformed, and it can be seen from the appearance that the used endoscopic forceps plug has been used. Therefore, the user can accidentally reuse the used endoscopic forceps plug. Can be prevented.

  In addition, since the forceps plug for endoscope removed from the end of the treatment instrument insertion channel cannot be reused, in this respect as well, the user erroneously reuses the used forceps plug for endoscope. Can be prevented.

  (2) The endoscopic forceps plug according to (1), wherein the low-strength portion is reversibly only elastically deformed when mounted.

  Thereby, the airtightness between the main body and the end of the treatment instrument insertion channel can be more reliably maintained when the forceps plug for endoscope is attached.

  (3) The endoscopic forceps plug according to (1) or (2), wherein the low-strength portion is ruptured when the detachment is performed.

  Thereby, the used forceps plug for endoscope can be made in a state where it cannot be used more reliably.

(4) The endoscopic forceps plug according to any one of (1) to (3), wherein the low-strength portion is formed by a cut formed so as to leave a part of the low-strength portion in the main body.
Thereby, a low intensity | strength part can be formed in a main body comparatively easily.

  (5) The endoscopic forceps plug according to (4), wherein the notch extends substantially perpendicularly to a moving direction of the main body at the time of detachment.

  Thereby, the main body can be reliably deformed into a non-reusable state when the endoscopic forceps plug is detached.

  (6) The endoscopic forceps plug according to (4) or (5), wherein the cut is formed so as to leave at least a part of an engagement portion with the end portion of the main body.

  Thereby, the unintentional deformation | transformation of the low intensity | strength part at the time of attachment or detachment | leave of the forceps plug for endoscopes can be prevented more reliably.

  (7) The endoscopic forceps plug according to any one of (1) to (6), wherein the main body has a cylindrical shape.

  Thereby, the airtightness between the main body and the end of the treatment instrument insertion channel can be more reliably maintained when the forceps plug for endoscope is attached.

  (8) The cylindrical main body has a diameter-expanded portion formed so as to expand the inner periphery thereof, and engages with a flange formed to protrude from the outer periphery of the end portion. 7) Forceps plug for endoscope according to 7).

  As a result, the airtightness between the main body and the end of the treatment instrument insertion channel is more reliably maintained when the forceps plug for endoscope is attached, and the main body is more reliably prevented from unintentionally detaching from the end. Can be prevented.

  (9) The endoscopic forceps plug according to (8), wherein the low-strength portion is positioned on the endoscope side with respect to the flange at the time of the mounting.

  Thereby, it is possible to prevent a part of the main body from remaining at the end of the treatment instrument insertion channel when the endoscopic forceps plug is detached.

  (10) The above-described (1) to (1), wherein the low-strength portion is configured to cause the deformation when the both sides of the main body are pulled apart with a force of 1 to 2 kg with the low-strength portion as a center. The endoscopic forceps plug according to any one of (9).

  Thereby, the used forceps plug for endoscope can be made in a state where it cannot be used more reliably.

Hereinafter, the forceps plug for endoscope of the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.
FIG. 1 is a plan view showing an endoscope provided with an endoscopic forceps plug of the present invention, and FIG. 2 is a longitudinal sectional view showing a first embodiment of the endoscopic forceps plug of the present invention. 3 is a cross-sectional view taken along the line AA of FIG. 2, FIG. 4 is a diagram showing a state in which the endoscopic forceps plug of the present invention is attached to the endoscope, and FIG. 5 is an endoscopic forceps of the present invention. It is a figure which shows a mode that a stopper detach | leaves from an endoscope. In the following description, the upper side in FIGS. 1 to 5 is referred to as “base end” and the lower side is referred to as “tip”.

First, an example of the configuration of the endoscope will be briefly described with reference to FIG.
An endoscope 10 shown in FIG. 1 is an electronic endoscope, and is provided on a long insertion portion flexible tube 11 having flexibility and a proximal end side of the insertion portion flexible tube 11. An operation unit 12 for gripping and operating the entire endoscope 10, a bending unit 13 provided on the distal end side of the insertion portion flexible tube 11 and capable of remotely controlling the bending state from the operation unit 12, and a light source processor It has the light source insertion part 14 for connecting with an apparatus (not shown), and the connection part flexible tube 15 which connects the operation part 12 and the light source insertion part 14. FIG. Inside the endoscope 10, built-in objects (not shown) such as a light guide using an optical fiber bundle, an image signal cable, a cable, and tubes are arranged and inserted.

  Needless to say, the forceps plug 1 for an endoscope of the present invention can be used not only for an electronic endoscope such as the endoscope 10 but also for various endoscopes such as a fiber endoscope. Yes.

  When the endoscope 10 is used, light emitted from a light source in the light source processor device passes through the light guide, and is irradiated onto the observation site from the distal end portion of the bending portion 13 to illuminate.

  An imaging element (CCD) (not shown) that captures a subject image at the observation site is provided at the distal end of the bending portion 13, and an image signal corresponding to the subject image captured by the imaging element is the image signal cable. After being transmitted to the light source processor device through a predetermined process, it is input to a monitor device (not shown). In the monitor device, an image (electronic image) captured by the image sensor, that is, an endoscope monitor image of a moving image is displayed.

  A treatment instrument insertion channel 16 for inserting a treatment instrument is formed inside the insertion section flexible tube 11 and the bending section 13. The treatment instrument insertion channel 16 has a proximal end opening 161 (an end portion of the treatment instrument insertion channel 16) at the protrusion 121 formed in the operation section 12, and a distal end opening 162 at the distal end of the bending portion 13. have.

  In such an endoscope 10, various treatment tools (not shown) are inserted into the treatment tool insertion channel 16 from the proximal end opening 161 with the insertion portion flexible tube 11 and the bending portion 13 inserted into the body cavity. And can be used by protruding (exposed) from the tip opening 162. The treatment tool that can be used is not particularly limited. For example, forceps such as biopsy forceps and grasping forceps, various sensors such as a body temperature sensor, electrodes for electrocardiography, an incision tool such as a knife, a laser knife, etc. Tube, catheter, cleaning tube, drainage tube, etc. (catheter), crushing probe (stone breaking tool), heat probe, injection needle, ligature, wire, etc. Is mentioned.

  The proximal end opening 161 is formed to project from the projecting portion 121 in a cylindrical shape (cylindrical shape). Further, a flange 163 that protrudes in a ring shape radially outward is formed at the base end of the base end opening 161.

  As shown in FIG. 2, the forceps plug 1 for an endoscope of the present invention is used by being installed in a proximal end opening (base) 161 of a treatment instrument insertion channel 16.

  The endoscopic forceps plug 1 of this embodiment includes a main body 2 that is detachably installed in the proximal end opening 161 and a lid 3 that is detachably installed on the main body 2.

  The main body 2 and the lid body 3 are each made of an elastic material and can be deformed (elastically deformed). The elastic material constituting the main body 2 and the lid 3 is not particularly limited. For example, various thermoplastic elastomers such as olefin elastomer, urethane elastomer, styrene elastomer, fluorine elastomer, and silicone elastomer (silicone rubber). , Various rubbers such as nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR), ethylene-propylene rubber (EPM, EPDM), etc., and one or more of these are mixed (blended) and used. be able to.

  The main body 2 has a substantially cylindrical shape (barrel shape) as an overall shape, and is installed in a state where a proximal end opening 161 is inserted into a portion on the distal end side. A diameter-reduced portion 21 that protrudes in a ring shape is formed on the inner periphery of the front end portion of the main body 2. In other words, a diameter-enlarged portion 25 that is recessed in a ring shape is formed on the inner periphery of the proximal end portion with respect to the reduced-diameter portion 21 of the main body 2. The proximal end opening 161 is inserted into the inner periphery of the reduced diameter portion 21, and the proximal end surface of the reduced diameter portion 21 is engaged with the distal end side surface of the flange 163, so that the main body 2 is liquid-tight to the proximal end opening 161. It is fixed while ensuring.

  The main body 2 is detachably attached to the proximal end opening 161 by being elastically deformed so that the reduced diameter portion 21 is expanded. Thereby, the forceps plug 1 for endoscope can be replaced | exchanged for a new article for every use.

  A flange 22 that protrudes in a ring shape radially inward is formed on the inner periphery of the base end of the main body 2.

  Thus, since the main body 2 has a cylindrical shape and engages with the proximal end opening 161 having a corresponding shape, the main body 2 and the proximal end opening 161 are attached when the endoscopic forceps plug 1 is mounted. The airtightness between the two can be more reliably maintained.

  Further, since the main body 2 engages with the flange 163 having a shape corresponding to the enlarged diameter portion 25, the airtightness between the main body 2 and the proximal end opening 161 is further improved when the forceps plug 1 for endoscope is mounted. While maintaining reliably, it can prevent more reliably that the main body 2 detaches | leaves from the base end opening part 161 unintentionally.

  A partition wall 23 is formed on the proximal side of the reduced diameter portion 21 and the enlarged diameter portion 25 so as to separate (divide) the lumen of the main body 2. The partition wall 23 is formed with a hole 231 into which the treatment tool is inserted (inserted). The inner diameter of the hole 231 is preferably smaller than the outer diameter of the treatment instrument. By providing the partition wall 23, as will be described later, it is possible to more reliably prevent the liquid from leaking in a state where the treatment instrument is inserted. The partition wall 23 may not be provided.

  As shown in FIG. 3, the reduced diameter portion 21 has a low strength portion (breaking portion) 211 having a lower strength than other portions.

  As shown in FIG. 3, the low-strength portion 211 is due to a cut 211 </ b> A formed so as to leave a part of the main body 2. In other words, the thin portion 211 is formed by locally forming a thin portion in the main body 2 by the notch 211A. Thereby, intensity | strength is lower than the other part of the reduced diameter part 21 (main body 2). Such a low-strength portion 211, for example, when forming the main body 2, by forming a notch 211A with a laser or a cutting machine after injection molding or the like, while preventing damage during removal from the mold, relatively It can be easily formed.

  The low-strength portion 211 is configured to break when the main body 2 is detached from the proximal end opening portion 161. Thereby, the used forceps plug 1 for endoscope can be made into a state which cannot be used more reliably.

  The notch 211A extends substantially at right angles to the moving direction (vertical direction in FIG. 2) of the main body 2 at the time of detachment. As a result, the main body 2 can be more reliably deformed into a non-reusable state when the endoscopic forceps plug 1 is detached.

  Further, as shown in FIG. 3, the notch 211 </ b> A is formed so as to leave at least a part of an engaging portion (an inner periphery of the reduced diameter portion 21) with the base end opening 161 of the main body 2. This prevents the flange 163 from entering the notch 211A when the endoscopic forceps plug 1 is attached or detached, thereby preventing the unintentional deformation of the low-strength portion 211 more reliably.

  Note that the partial shape, position, size, and the like left by the notch 211A can be used as long as the used forceps plug 1 for an endoscope can be made unusable. It is not limited to what is shown in, but is arbitrary.

  Further, the low-strength portion 211 is located on the endoscope 10 side, that is, the distal end side with respect to the flange 163 at the time of mounting. Thereby, the unintentional deformation | transformation of the low intensity | strength part 211 can be prevented more reliably at the time of detachment | leave of the forceps plug 1 for endoscopes. As a result, it is possible to prevent a part of the main body 2 from remaining in the proximal end opening 161.

  When the main body 2 is detached from the proximal end opening 161, the tensile force required for deformation (breaking) of the low-strength portion 211 is not particularly limited, but the low-strength portion 211 is When pulled in the direction of separation with a pulling force of 1 to 2 kg, it is preferable to cause the deformation (breaking) as described above. In other words, the low-strength portion 211 is deformed (broken) when pulled with a force of 1 to 2 kg in the direction away from both sides of the main body 2 with the low-strength portion 211 as the center. preferable. Thereby, the used forceps plug 1 for endoscope can be made into a state which cannot be used more reliably.

  The lid 3 has a substantially bottomed cylindrical shape (bottomed cylindrical shape) having a bottom on the tip side, and an opening / closing part 31 is constituted by the bottom. In the configuration shown in the drawing, the opening / closing part 31 is rounded in a substantially hemispherical shape.

  The lid 3 is installed in a state of being inserted into a concave portion 24 formed by being surrounded by a base end side portion of the main body 2 and the partition wall portion 23.

  A single-character slit 32 into which the treatment tool is inserted (inserted) is formed at the center of the opening / closing part 31. In addition, the shape of this slit 32 is not specifically limited, For example, a cross shape, L shape, etc. may be sufficient.

  A lumen in a portion on the proximal end side of the opening / closing part 31 of the lid 3 is a passage 33 through which the treatment tool is inserted. Since the passage 33 is formed, when the treatment instrument is inserted into the slit 32, the distal end portion of the treatment instrument is guided to the slit 32, so that this operation can be easily performed.

  On the outer periphery of the lid 3, an engaging portion 34 that engages with the flange 22 is formed in a ring shape. The lid 3 is liquid-tightly fixed to the main body 2 by fitting the body portion thereof to the inner periphery of the flange 22 and engaging the proximal end side surface of the engaging portion 34 with the distal end side surface of the flange 22. ing.

  The lid 3 and the main body 2 are capable of releasing the engagement between the flange 22 and the engaging portion 34 by being elastically deformed, and are detachable.

  A knob 35 projecting outward is formed at the base end of the lid body 3. When the lid body 3 is removed from the main body 2, the knob body 35 is sandwiched and the lid body 3 can be pulled and removed. it can.

  Further, an elongated connecting member 36 having flexibility is extended from the opposite side of the knob 35, and this connecting member 36 is fitted and installed from the outside to the root portion of the base end opening 161. The ring member 37 is connected. When the lid 3 is removed, the connecting member 36 is deformed as indicated by a one-dot chain line in FIG. 2 to hold the lid 3. Thereby, when the cover body 3 is removed from the main body 2, it can prevent that the cover body 3 falls or is lost.

  In the endoscope 10 in which such an endoscopic forceps plug 1 is installed, when using a treatment instrument, the treatment instrument is inserted from the proximal end opening 331 of the passage 33, and the slit 32 and the hole 231 are sequentially formed. It is passed through and inserted into the treatment instrument insertion channel 16.

  In the state where the treatment instrument is inserted, the slit 32 is opened by the deformation of the opening / closing part 31, and the joint surface 321 of the slit 32 is in close contact with the outer peripheral surface of the treatment instrument. Thereby, it is possible to prevent the liquid in the body cavity from leaking from the proximal end opening 161.

  In the present embodiment, the inner peripheral surface of the hole 231 is also in close contact with the outer peripheral surface of the treatment instrument with the treatment instrument inserted. Thereby, it is possible to more reliably prevent the liquid in the body cavity from leaking out from the proximal end opening 161.

  When the treatment tool is removed from the endoscopic forceps plug 1, the joint surfaces 321 are brought into close contact with each other by the elasticity of the opening / closing portion 31 and the slit 32 is returned to the closed state. Thereby, it is possible to prevent the liquid in the body cavity from leaking from the proximal end opening 161 even when the treatment instrument is not inserted.

  Such an endoscopic forceps plug 1 is replaced with a new one each time it is used, that is, disposable. Hereinafter, the attachment / detachment of the endoscopic forceps plug 1 with respect to the proximal end opening 161 of the endoscope will be described in detail.

  When attaching the forceps plug 1 for an endoscope to the proximal end opening 161, first, as shown in FIG. 4A, the ring member 37 of the connecting member 36 of the lid 3 with respect to the proximal end opening 161. Install.

  Next, as shown in FIG. 4B, the base end opening 161 is inserted into the main body 2 while the diameter-reduced portion 21 of the main body 2 is expanded by elastic deformation.

  Then, as shown in FIG. 4C, the flange 163 of the proximal end opening 161 passes through the reduced diameter portion 21 of the main body 2, and the main body 2 is attached to the proximal end opening 161.

  On the other hand, when removing the endoscopic forceps plug 1 from the proximal end opening 161, the user pulls the endoscopic forceps plug 1 upward in FIG. 5 from the attached state shown in FIG. Pull to the base end side.

  Then, as shown in FIG. 5B, the flange of the proximal end opening 161 passes through the low strength portion 211 while expanding the reduced diameter portion.

  Furthermore, when the main body 2 is pulled upward against the frictional force between the flange 163 and the reduced diameter portion 21, the pulling force of the main body 2 wins over the strength of the low strength portion 211 of the main body 2, and FIG. As shown in C), the low-strength portion 211 of the main body 2 is broken. As a result, the main body becomes non-reusable.

  At this time, the low-strength portion 211 of the main body 2 remains partly joined except for the notch 211 </ b> A. Further, when the main body 2 is pulled, the main body 2 is completely removed from the proximal end opening 161.

  As described above, the forceps plug 1 for an endoscope according to the present invention is configured so that the low-strength portion 211 makes the main body 2 unusable when the main body 2 is detached from the proximal end opening 161. Irreversibly deforms.

  Therefore, since the used endoscopic forceps plug 1 is deformed and can be seen from the appearance, the user can mistakenly reuse the used endoscopic forceps plug 1. Can be prevented.

  Further, since the endoscopic forceps plug 1 removed from the proximal end opening 161 of the treatment instrument insertion channel 16 cannot be reused, the endoscopic forceps plug 1 used by the user also in this respect. Can be prevented from being reused by mistake.

  The embodiment of the forceps plug for endoscope of the present invention has been described above, but the present invention is not limited to this, and each part constituting the forceps plug for endoscope has the same function. It can be replaced with any configuration that can be exhibited.

  For example, the low-strength portion 211 has been described by forming the notch 211A in the main body 2. However, when the main body portion 2 is detached from the proximal end opening 161, the main body 2 becomes in a non-reusable state. If it becomes such intensity | strength, it will not be limited to this. For example, a part of the main body 2 may be made thin or made of a low-strength material.

  Further, the forceps plug for endoscope according to the present invention is not limited to one divided into a main body and a lid, and a portion corresponding to both is integrally formed (in one member). But you can.

It is a top view which shows the endoscope in which the forceps stopper for endoscopes of this invention was installed. It is a longitudinal cross-sectional view which shows embodiment of the forceps stopper for endoscopes of this invention. It is the sectional view on the AA line of FIG. It is a figure which shows a mode that the forceps stopper for endoscopes shown in FIG. 2 is mounted | worn with an endoscope. It is a figure which shows a mode that the forceps stopper for endoscopes shown in FIG. 2 is removed to an endoscope.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Forceps plug for endoscopes 2 Main body 21 Reduced diameter part 211 Low-strength part (breaking part)
211A notch 22 flange 23 partition part 231 hole 24 recessed part 25 enlarged diameter part 3 lid 31 opening / closing part 32 slit 321 joint surface 33 passage 331 proximal end opening 34 engaging part 35 knob 36 connecting member 37 ring member 4, 41, 42 covering Layer 10 Endoscope 11 Insertion section flexible tube 12 Operation section 121 Projection section 13 Bending section 14 Light source insertion section 15 Connection section flexible tube 16 Treatment instrument insertion channel 161 Base end opening 162 Front end opening 163 Flange

Claims (10)

An endoscopic forceps plug used detachably attached to an end of an endoscope treatment instrument insertion channel,
A main body that engages with the end when mounted;
The main body has a low-strength portion whose strength is lower than that of other portions in a part thereof, and the low-strength portion is irreversibly deformed when the main body is detached from the end portion. A forceps plug for an endoscope, characterized in that it can be recognized as having been completed.   The endoscopic forceps plug according to claim 1, wherein the low-strength portion is reversibly only elastically deformed at the time of attachment.   The endoscopic forceps plug according to claim 1, wherein the low-strength portion is broken when the detachment is performed.   The endoscopic forceps plug according to any one of claims 1 to 3, wherein the low-strength portion is formed by a cut formed so as to leave a part of the low-strength portion in the main body.   The endoscopic forceps plug according to claim 4, wherein the cut extends substantially perpendicularly to a moving direction of the main body at the time of detachment.   The endoscopic forceps plug according to claim 4 or 5, wherein the notch is formed so as to leave at least a part of an engaging portion with the end portion of the main body.   The endoscopic forceps plug according to any one of claims 1 to 6, wherein the main body has a cylindrical shape.   The said cylindrical main body has an enlarged diameter part formed so that the inner periphery may be expanded, and engages with a flange formed so as to protrude from the outer periphery of the end part. Endoscopic forceps plug.   The endoscopic forceps plug according to claim 8, wherein the low-strength portion is positioned closer to the endoscope than the flange at the time of mounting. 10. The low-strength portion is configured to cause the deformation when the both sides of the main body are pulled apart with a force of 1 to 2 kg with the low-strength portion as a center. An endoscopic forceps plug according to claim 1.

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