JP5827797B2 - A pair of endoscope clip units - Google Patents

Description

  The present invention relates to a pair of clip units for an endoscope.

  In recent years, with the development of endoscopic treatment methods, the number of sites that can be treated under the endoscope has increased. For example, it has been placed in the body to perform suture treatment, suture treatment, hemostasis treatment, etc. of the digestive tract. Endoscopic clip units are used. The endoscopic clip unit is used to close a perforation when the perforation is formed in the digestive tract mucosa, for example, during or after ESD (endoscopic submucosal dissection).

  A conventional endoscope clip unit is composed of a clip having a pair of gripping portions that are opened by self-expanding and a presser tube that is attached to the clip so as to be able to advance and retreat. Is moved to the base end side (the other end side opposite to the one end where the clip opens and closes along the clip length direction) to open the pair of gripping portions and move to the tip end side opposite to the base end side. As a result, the gripping part is closed (see Patent Document 1).

  However, when closing a perforation formed during or after surgery using an endoscope, the opening width that can close the perforation by closing the pair of gripping portions of the clip is such that the pair of gripping portions It is limited to the opening width that can be opened. Therefore, when the opening width of the perforation is wide, the conventional clip cannot close the perforation and is sutured by a surgical operation. Therefore, the problem that the burden to a patient becomes large has arisen.

  Therefore, in order to close a perforation having a wide opening width, a suture that penetrates the living tissue around the perforation, a first connecting member provided at a first end of the suture, and a second suture The second connecting member that is provided at the end of the first connecting member and can be connected to the first connecting member, and the suture is held along the suture so that the distance between the first connecting member and the second connecting member is shortened. An endoscopic suturing tool including a movable stopper is known (see Patent Document 2).

  In the endoscope suturing device described in Patent Document 2, first, the suture is passed through one end edge of the perforation, then the first connecting member is placed inside the living tissue, and the suture is passed through the other end of the perforation. After penetrating at the edge, the second connecting member is placed inside the living tissue. Next, by moving the stopper along the suture so as to shorten the distance from the first and second connecting members, the perforation can be closed even in the case of a perforation with a wide opening width.

JP 2004-121484 A Japanese Patent Laid-Open No. 2007-90062

  However, in the endoscope suturing tool of Patent Document 2, after the perforation is closed, the first and second connecting members are placed inside the living tissue, which may impose a burden on the patient. Moreover, since the stopper is moved along the suture thread in order to shorten the distance from the first and second connecting members, there is a disadvantage that a dedicated operation member for operating the stopper is required.

  Therefore, the present invention aims to provide a pair of endoscope clip units that can eliminate such inconvenience and can surely reduce the width of the affected part without being limited to the width of the affected part such as perforation. .

A pair of clip units for an endoscope according to the present invention is a pair of clip units for an endoscope that is inserted into a channel of an endoscope and includes a first clip unit and a second clip unit, The first clip unit extends from the first base end and opens its arm by self-expanding, and has a first clip having a pair of first gripping portions for gripping one end edge of the affected area, And a first presser tube having a magnetized first magnetized portion, and the second clip unit extends from the second base end. A second clip having a pair of second gripping portions for gripping the other end edge opposite to the one end edge of the affected part, and capable of moving forward and backward with respect to the second clip while being opened by self-expanding A wear that is fitted and can be fitted to the first magnetized portion. And a second stop tube having a second magnetized portion which is, magnetized in the first comprises a first corrugated portion of the cross-section waveform, magnetized said second first A second wavy portion having a corrugated cross section fitted to the wavy portion, and the first magnetized portion and the second magnetized portion are the first magnetized portion and the second magnetized portion. The end of the first magnetized portion and the end of the second magnetized portion facing each other when the magnetized portion is fitted have different polarities.

  In the pair of clip units for an endoscope according to the present invention, the first clip of the first clip unit has a pair of first grip portions that open by self-expanding, A 2nd clip has a pair of 2nd holding part opened by self-expanding property. A first presser tube is attached to the first clip so as to be able to advance and retract, and a second presser tube is attached to the second clip so as to be able to advance and retract.

  In the pair of endoscope clip units of the present invention, first, in the first clip unit, the first clip is moved to the proximal end side with respect to the first presser tube. By moving the first clip to the proximal end side in the first presser tube, the pair of first gripping portions that are opened by self-expanding is brought into pressure contact with the inner wall of the first presser tube, Close the grip. Therefore, by opening the first gripping part and then closing the first gripping part, the one end edge of the affected part can be gripped and the first clip unit can be placed on the one end edge of the affected part. .

  Next, in the second clip unit, similarly to the first clip unit, the second clip is moved to the proximal end side with respect to the second presser tube, and the second gripping portion is closed. And the other end edge which opposes the one end edge of an affected part is hold | gripped with a 2nd holding part, and a 2nd clip unit is detained in the other end edge of an affected part.

  Here, the first presser tube of the first clip unit has a magnetized first magnetized portion, and the second presser tube of the second clip unit has a magnetized second magnetized portion. Have. In addition, the first magnetized portion and the second magnetized portion can be fitted together, and the first magnetized portion facing when the first magnetized portion and the second magnetized portion are fitted together. The end of the magnetic part and the end of the second magnetized part have different polarities.

  Therefore, next, the first magnetized portion of the first clip unit and the second magnetized portion of the second clip unit are fitted. By fitting the first magnetized portion and the second magnetized portion, the first presser tube attached to the first clip and the second presser tube attached to the second clip It can be adhered.

  Therefore, by bringing the first presser tube and the second presser tube into close contact with each other, the first clip is held and held at one end edge, and the second clip is held and held at the other end edge. The width of the affected area can be reduced.

  According to the pair of clip units for an endoscope of the present invention, after the first and second clips are placed at both end edges of the affected part, the first magnetized part and the second magnetized part are fitted. Since the end portions of the first magnetized portion and the end portion of the second magnetized portion which are sometimes opposed have different polarities, the first magnetized portion and the second magnetized portion can generate the first The magnetized portion and the second magnetized portion can be easily adhered.

Then, by bringing the first and second clips into close contact with each other, a wide affected area that cannot be shrunk by the first clip unit alone or the second clip unit alone, for example, perforation with a wide opening width or perforation may occur. The width of the affected part can be surely reduced without being limited to the width of the affected part even for the part having the property.
Furthermore, according to the pair of clip units for an endoscope of the present invention, the first and second wavy portions have a corrugated cross section, so that the first or second clip can be shifted or removed after fitting. In addition, it is possible to easily fit the first wavy portion of the first magnetized portion and the second wavy portion of the second magnetized portion. Accordingly, the first and second clips can be placed at both end edges of the affected part, and the state where the width of the affected part is reduced can be reliably and easily maintained.

  In the pair of endoscope clip units according to the present invention, the first clip unit engages with the first base end and is connected to an operation wire that is inserted into the channel so as to be able to advance and retract. 1 connecting member, and with respect to the first presser tube, the operation wire is moved to the distal end side to open the first gripping portion, and the operation wire is moved to the proximal end side to move the operation wire to the proximal end side. The first gripping part is closed, and further, the operation wire is moved to the proximal end side, and the first gripping part is closed with the first clip and the first connecting member being closed. The second clip unit is disengaged, and the second clip unit is engaged with the second base end and includes a second connecting member connectable to the operation wire. The operation wire is moved to the distal end side to open the second gripping portion, and the operation wire is moved to the proximal end side. The second gripping portion is moved to close the arm, and further, the operation wire is moved to the proximal end side, and the second gripping portion is closed while the second gripping portion is closed. It is preferable to release the engagement with the connecting member.

  In the pair of endoscope clip units according to the present invention, first, in the first clip unit, the operation wire is placed on the distal end side with respect to the first presser tube that is attached to the first clip so as to be able to advance and retreat. Move and open the first gripping part. Next, the operation wire is moved to the proximal end side with respect to the first presser tube, and the first gripping portion is closed. By closing the arm after opening the first gripping part, the first gripping part can grip one edge of the affected part.

  Further, the operation wire is moved to the proximal end side with respect to the first presser tube, and the engagement between the first clip and the first connecting member is released while the first gripping portion is closed. By releasing the engagement between the first clip and the first connecting member, the first clip to which the first presser tube is attached and the first connecting member to which the operation wire is connected are separated. Moreover, since the 1st holding | gripping part is still closed, the 1st clip with which the 1st presser tube was mounted | worn can be detained, maintaining the state which hold | gripped the edge of one end.

  Next, in the second clip unit, similarly to the first clip unit, first, the operation wire is moved to the distal end side with respect to the second presser tube to open the second gripping portion, and then Then, the operation wire is moved to the proximal end side to close the second gripping portion. Furthermore, the operation wire is moved to the proximal end side, and the engagement between the second clip and the second connecting member is released while the second gripping portion is closed. Therefore, the second clip to which the second presser tube is attached can be placed while maintaining the state where the other end edge opposite to the one end edge of the affected part where the first clip is placed is held.

  According to the pair of clip units for an endoscope of the present invention, since the first clip unit and the second clip unit are inserted through the channel of the endoscope, the first presser tube of the first clip unit By moving the operation wire with respect to the second presser tube of the second clip unit, the first and second clips can be placed at both ends of the affected area, and the width of the affected area can be reduced. Therefore, the pair of endoscope clip units is highly versatile because it does not change the design of an existing endoscope, and can be easily commercialized because no dedicated member is used.

The figure which shows the example of 1 structure of a pair of clip unit for endoscopes of this embodiment. FIG. 2A is a partially cutaway front sectional view of the first clip unit of the present embodiment, and FIG. 2B is a partially cutaway plan sectional view of the first clip unit of the present embodiment. FIG. 3A is a partially cutaway front sectional view of the second clip unit of the present embodiment, and FIG. 3B is a partially cutaway plan sectional view of the second clip unit of the present embodiment. 4A is a diagram showing a schematic configuration of the endoscope, and FIG. 4B is an enlarged view of a portion A in FIG. 4A. The figure explaining operation | movement of the 1st clip unit of a pair of clip unit for endoscopes of this embodiment. The figure which left the pair of clip unit for endoscopes of this embodiment in the both ends of perforation. The figure which made the clip unit of a pair of clip unit for endoscopes of this embodiment approach. The figure which fitted the pair of clip unit for endoscopes of this embodiment. The figure which closed the whole perforation. The figure which shows the modification of a pair of clip unit for endoscopes of this embodiment.

  Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

  As shown in FIG. 1, the pair of endoscope clip units 1 according to the present embodiment includes a first clip unit 10 and a second clip unit 20. As shown in FIGS. 1 and 2, the first clip unit 10 includes a first clip 11, a first presser tube 12, and a first connecting member 13. As shown in FIGS. 1 and 3, the second clip unit 20 includes a second clip 21, a second presser tube 22, and a second connecting member 23.

  In the present specification, along the length direction of the first clip unit 10 and the second clip unit 20, the pushing direction of the first and second clips 11, 21 is the tip, and the side opposite to the tip is the base. It is described as an end.

  The first clip 11 of the first clip unit 10 is formed by bending a metal plate material such as a plate spring material such as stainless steel at the center portion to form a loop portion 11a and crossing it at a position near the loop portion 11a. The pair of gripping portions 11b and 11b having self-expanding properties are extended in a state of being separated from the tip. The first clip 11 slides against the inner surface of the presser tube 12.

  At the tips of the pair of gripping portions 11b, 11b, claw portions 11c, 11c are formed so as to face each other when the pair of gripping portions 11b, 11b are closed. Further, first protrusions 11 d and 11 d that protrude in the plate width direction are provided on both side portions of the pair of grip portions 11 b and 11 b of the first clip 11.

  Similarly to the first clip 11, the second clip 21 of the second clip unit 20 has a loop portion 21a formed at the proximal end, and a pair of gripping portions 21b and 21b having self-expanding properties from the proximal end. It extends in a state of being separated from the tip, and slides against the inner surface of the presser tube 22.

  At the tips of the pair of gripping portions 21b and 21b, claw portions 21c and 21c that make it easy to grip a living tissue are formed so as to face each other. Further, second protrusions 21d and 21d protruding in the plate width direction are provided on both sides of the pair of gripping portions 21b and 21b of the second clip 11.

  The first presser tube 12 of the first clip unit 10 is formed of a softer material than the first clip 11, for example, a resin having moderate elasticity such as PPA (polyphthalamide), PA (polyamide) by injection molding. A cylindrical tube. The first presser tube 12 closes the leg of the first gripping portion 11b, 11b of the first clip 11 by being fitted to and attached to the first gripping portion 11b, 11b of the first clip 11. It is.

  The first presser tube 12 has an inner circumference on the distal end side that is larger in diameter than an inner circumference on the proximal end side. On the inner peripheral surface of the first presser tube 12, a step portion 12a is formed between the distal end and the proximal end. The step portion 12a engages the first protrusions 11d and 11d of the first clip 11 when the first clip 11 is slid from the distal end side to the proximal end side of the inner circumferential surface of the first presser tube 12. It stops and the locked state of the 1st clip 11 and the 1st presser tube 12 is maintained.

  Similar to the first presser tube 12, the second presser tube 22 of the second clip unit 20 is a cylindrical tube, and is fitted into and attached to the second gripping portions 21b and 21b. The second gripping portions 21b and 21b of the second clip 21 are closed. The second presser tube 22 also has a stepped portion 22a on the inner peripheral surface, and when the second clip 21 is slid from the distal end side to the proximal end side of the inner peripheral surface of the second presser tube 22, the second presser tube 22 The second protrusions 21 d and 21 d of the second clip 21 are locked, and the locked state between the second clip 21 and the second presser tube 22 is maintained.

  The first presser tube 12 includes a magnetized first magnetized portion 12b on the outer periphery, and the second presser tube 22 includes a magnetized second magnetized portion 22b on the outer periphery. The first magnetized portion 12b and the second magnetized portion 22b are formed by the first magnetized portion 12b facing each other when the first magnetized portion 12b and the second magnetized portion 22b are fitted to each other. The end portion and the end portion of the second magnetized portion 22b have different polarities. The 1st magnetized part 12b has the convex part 12c in the longitudinal direction center part, and the 2nd magnetized part 22b has the recessed part 22c which can fit the convex part 12c in the longitudinal direction center part.

  The first connecting member 13 of the first clip unit 10 is a member formed by injection molding a resin having a strength such as a liquid crystal polymer, and the first engaging protrusions in order from the distal end side to the proximal end side. A portion 13a, a thin first break portion 13b, and a first main body portion 13c are provided.

  The first engaging protrusion 13 a of the first connecting member 13 is engaged by hooking the loop portion 11 a of the first clip 11. The first connecting member 13 closes the first clip 11 by drawing the first clip 11 engaged with the first engaging protrusion 11 a into the first presser tube 12.

  The first breaking portion 13b of the first connecting member 13 connects the first engaging protrusion 13a and the first main body portion 13c, and has a small diameter so as to break when a certain force is applied. Is formed.

  The first main body portion 13c of the first connecting member 13 has a notch from the distal end side to the proximal end side, and is formed so as to grip a triangular pyramid hook at the distal end of the operation wire described later.

  Similarly to the first connecting member 13 of the first clip unit 10, the second connecting member 23 of the second clip unit 20 is, in order from the distal end side to the proximal end side, the second engaging protrusion 23 a, A small-diameter second breaking portion 23b and a second main body portion 23c are provided.

  The first clip unit 10 and the second clip unit 20 are inserted into the channel 31 of the endoscope 30 shown in FIG. The endoscope 30 includes an endoscope operation unit 32 that is operated by an operator, and a flexible long endoscope insertion unit 33 provided at the distal end of the endoscope operation unit 32.

  The endoscope operation unit 32 operates a suction switch 34 that operates a suction device (not shown) that sucks liquid or gas from the distal end of the endoscope insertion unit 33, and an unillustrated transmission that feeds air from the distal end of the endoscope insertion unit 33. An air supply switch 35 for operating the air device is provided.

  At the distal end of the endoscope insertion portion 33, as shown in FIG. 4 (b), which is an enlarged view of part A of FIG. 4 (a), an observation device 36 for obtaining an in-vivo image and illumination devices 37, 37, A tip opening of the channel 31 and a nozzle 38 are provided. As the observation device 36, an imaging device having a CCD (Charge Coupled Device) or the like is used. The illumination devices 37 and 37 have an optical fiber that guides light from the light source. The nozzle 38 is an opening for feeding or sucking water or air, water supply, drainage, air supply or deaeration according to the operation of the suction switch 34 or the air supply switch 35.

  The channel 31 has a forceps port 39 that opens to the side of the endoscope operation unit 32 through the endoscope insertion unit 33. In the channel 31, the coil sheath 40 into which the operation wire connected to the first clip unit 10 or the second clip unit 20 is inserted is inserted from the forceps port 39. The distal end of the coil sheath 40 is formed so as to be engageable with the first magnetized portion 12 b or the second magnetized portion 22 b, and the proximal end of the coil sheath 40 is led out from the forceps port 39, It is connected to a wire operation unit 41 that can operate the advance / retreat direction and the rotation direction.

  Next, an operation method of the pair of endoscope clip units 1 will be described using the first clip unit 10 with reference to FIG. The second clip unit 20 can also be operated in the same manner as the first clip unit 10.

  First, the first clip unit 10 connected to the operation wire 42 is inserted into the channel 31 of the endoscope 30 together with the coil sheath 40 from the forceps port 39, and as shown in FIG. Move to the tip.

  The distal end of the coil sheath 40 is engaged with the proximal end of the first magnetized portion 12 b of the first clip unit 10. Accordingly, the coil seal 40 into which the operation wire 42 is inserted is maintained in the endoscope 30 while maintaining the state where the proximal end of the first magnetized portion 12b of the first clip unit 10 and the distal end of the coil sheath 40 are engaged. By moving to the tip, the first clip unit 10 is moved to the tip of the channel 31 of the endoscope 30.

  Next, as shown in FIG. 5B, the coil seal 40 with the operation wire 42 inserted is further inserted into the channel 31, and a part of the first clip unit 10 is outside the channel 31 of the endoscope 30. The first clip unit 10 is pushed out together with the operation wire 42 until it is exposed. When the first clip unit 10 is pushed out of the channel 31, the pair of first gripping portions 11b and 11b of the first clip 11 having self-expanding properties are opened.

  Next, as illustrated in FIG. 5C, the operation wire 42 is moved to the proximal side while the position of the coil seal 40 outside the channel 31 of the endoscope 30 is maintained. Since the position of the coil seal 40 is maintained, the first presser tube 12 including the first magnetized portion 12b maintains the engaged state with the coil seal 40 and does not move to the proximal end side. . Therefore, by moving the operation wire 42 to the proximal end side, the first connecting portion 13 material connected to the operation wire 42 and the first clip 11 connected to the first connecting member 13 are moved to the proximal end side. .

  By moving the first clip 11 from the distal end side to the proximal end side, the first clip 11 is pulled into the first presser tube 12, and the pair of first gripping portions 11b and 11b are moved to the first presser tube. 12 is pressed against the inner wall of the endoscope 30, and the arm 31 shifts from the open arm state to the closed arm state outside the channel 31 of the endoscope 30.

  Next, as shown in FIG. 5D, the operation wire 42 connected to the first clip unit 10 in the closed arm state is further moved to the proximal end side. By moving the operation wire 42 connected to the first clip unit 10 in the closed arm state to the proximal end side, the first protrusions 11d and 11d of the first clip 11 are formed on the inner peripheral surface of the first presser tube 12. Locked to the stepped portion 12a.

  Further, by moving the operation wire 42 to the proximal end side, the first breaking portion 13b of the first connecting member 13 is broken. When the first breaking portion 13b breaks, the first clip 11 is placed outside the endoscope 30 while maintaining the closed arm state.

  Next, a method of using the pair of endoscope clip units 1 will be described with reference to FIGS. The pair of endoscope clip units 1 according to the present embodiment is used for closing a perforation formed in a digestive tract such as a gastrointestinal tract, an esophagus, a small intestine, or a large intestine.

  First, using the endoscope 30, as shown in FIG. 6, in the perforation 43 formed in the digestive tract mucosa, the first clip unit 10 from which the first connecting member 13 is detached is used as the first gripping portion. 11b and 11b are left in a state where one end edge of the perforation 43 is gripped. Similarly, the second clip unit 20 from which the second connecting member 23 has been detached is left in a state where the other end edge facing the one end edge of the perforation 43 is held by the second holding portions 21b and 21b.

  Next, the suction switch 34 of the endoscope 30 is operated to deaerate the digestive tract from the nozzle 38 at the distal end of the endoscope 30. By performing deaeration in the digestive tract, as shown in FIG. 7, the interior of the digestive tract is contracted to bring the first clip unit 10 and the second clip unit 20 placed at both ends of the perforation 43 closer to each other. Further, the first clip unit 10 and the second clip unit 20 are brought close to each other and brought into close contact with each other by the magnetic force of the first magnetized portion 12b and the second magnetized portion 22b.

  Next, after the first clip unit 10 and the second clip unit 20 are brought into close contact with each other, the air supply switch 35 of the endoscope 30 is operated to supply air in the digestive tract from the nozzle 38 at the distal end of the endoscope 30. I do. By performing air supply in the digestive tract, as shown in FIG. 8, the inside of the digestive tract is returned to the state before contraction, and the bias and gap generated at the peripheral edge of the perforation 43 are confirmed. The first clip unit 10 and the second clip unit 20 are in close contact with each other by the magnetic force of the first magnetized portion 12b and the second magnetized portion 22b, and are further displaced due to the fitting between the convex portion 12c and the concave portion 22c. It's hard and hard to come off.

  Then, as shown in FIG. 9, the entire perforation 43 is closed using an endoscopic clip unit 44 other than the pair of endoscopic clip units 1. Since the opening width of the widely opened perforation 43 is narrowed by the pair of clip units for endoscope 1, the bias generated at the peripheral edge of the perforation 43 using the conventional open arm width slip unit 44. And close to prevent gaps.

  In the present embodiment, the method of using the pair of endoscope clip units 1 has been described by taking, as an example, a large opening in the gastrointestinal tract. Etc. can also be used.

  Furthermore, the end of the first magnetized portion 12b and the end of the second magnetized portion 22b facing each other when the first magnetized portion 12b and the second magnetized portion are fitted have different polarities. Therefore, the N pole and the S pole are color-coded so that they can be visually confirmed through an endoscope, and the first clip unit 10 and the second clip unit 20 are placed at appropriate positions where they can be in close contact with each other. can do.

  Next, a modification of the pair of endoscope clip units 1 of the present embodiment will be described with reference to FIG. The pair of endoscope clip units 1 ′ of the modification has a configuration different from the first presser tube 12 and the second presser tube 22 of the pair of endoscope clip units 1 of the present embodiment. .

  The pair of clip units 1 for an endoscope of the present embodiment has a convex portion 12 c at the longitudinal center portion of the first magnetized portion 12 b of the first presser tube 12, and the second presser tube 22 A concave portion 22c that can be fitted to the convex portion 12c is provided at the center in the longitudinal direction of the second magnetized portion 22b.

  On the other hand, the pair of endoscope clip units 1 ′ of the modification has a first wavy shape in which the longitudinal section of the first magnetized portion 12 b ′ of the first presser tube 12 ′ is formed in a waveform. A second wavy portion 12c ′ formed in a waveform in which a longitudinal section of the second magnetized portion 22b ′ of the second presser tube 22 ′ is engaged with the first wavy portion 12c ′. Have According to the endoscope clip unit 1 ′ of the modification, the cross section of the first wavy portion 12c ′ of the first magnetized portion 12b ′ and the second wavy portion 22c ′ of the second magnetized portion 22b ′. Therefore, the first wavy portion 12c ′ and the second wavy portion 22c ′ can be easily fitted rather than fitting the convex portion 12c and the concave portion 22c.

  DESCRIPTION OF SYMBOLS 1 ... A pair of clip unit for endoscopes, 10 ... 1st clip unit, 11 ... 1st clip, 11b, 11b ... 1st holding part, 12 ... 1st presser tube, 12b ... 1st wearing Magnetic part, 12c ... convex part, 13 ... first connecting member, 20 ... second clip unit, 21 ... second clip, 21b, 21b ... first gripping part, 22 ... first presser tube, 22b ... 2nd magnetized part, 22c ... Recessed part, 12 ... 2nd connection member, 30 ... Endoscope, 31 ... Channel, 42 ... Operation wire, 43 ... Perforation.

Claims (2)

A pair of clip units for an endoscope, which is inserted into a channel of an endoscope and includes a first clip unit and a second clip unit,
The first clip unit is
A first clip having a pair of first gripping portions extending from the first base end and opening by self-expanding and gripping one edge of the affected area;
A first presser tube that is attached to the first clip so as to be movable back and forth and has a magnetized first magnetized portion;
The second clip unit is
A second clip having a pair of second gripping portions that extend from the second base end and open by self-expanding and grip the other end edge of the affected portion opposite to the one end edge;
A second presser tube that is attached to the second clip so as to be able to advance and retreat, and has a magnetized second magnetized portion that can be fitted to the first magnetized portion;
The first magnetized portion includes a first wavy portion having a corrugated cross section,
The second magnetized portion includes a second wavy portion having a corrugated cross section fitted to the first wavy portion,
The first magnetized portion and the second magnetized portion of the first magnetized portion that face each other when the first magnetized portion and the second magnetized portion are engaged with each other. A pair of clip units for an endoscope, wherein the end portion and the end portion of the second magnetized portion have different polarities. A pair of endoscope clip units according to claim 1 ,
The first clip unit includes:
A first connecting member that engages with the first base end and is connectable to an operation wire that is inserted into the channel so as to be freely advanced and retracted;
With respect to the first presser tube, the operation wire is moved to the distal end side to open the first gripping portion, and the operation wire is moved to the proximal end side to close the first gripping portion. Disengagement between the first clip and the first connecting member while moving the operation wire to the proximal end side and closing the first gripping part,
The second clip unit is
A second connecting member that engages with the second base end and is connectable to the operation wire;
With respect to the second presser tube, the operation wire is moved to the distal end side to open the second gripping portion, and the operation wire is moved to the proximal end side to close the second gripping portion. And releasing the engagement between the second clip and the second connecting member while moving the operation wire to the proximal end side and closing the second gripping part. A pair of endoscope clip units characterized.