WO2024154745A1 - カートリッジシステムおよびカートリッジ - Google Patents
カートリッジシステムおよびカートリッジ Download PDFInfo
- Publication number
- WO2024154745A1 WO2024154745A1 PCT/JP2024/001046 JP2024001046W WO2024154745A1 WO 2024154745 A1 WO2024154745 A1 WO 2024154745A1 JP 2024001046 W JP2024001046 W JP 2024001046W WO 2024154745 A1 WO2024154745 A1 WO 2024154745A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clip
- base end
- cartridge
- pair
- clip unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/128—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord for applying or removing clamps or clips
- A61B17/1285—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord for applying or removing clamps or clips for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/122—Clamps or clips, e.g. for the umbilical cord
- A61B17/1222—Packages or dispensers therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/122—Clamps or clips, e.g. for the umbilical cord
- A61B17/1227—Spring clips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/00296—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means mounted on an endoscope
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00477—Coupling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00526—Methods of manufacturing
- A61B2017/0053—Loading magazines or sutures into applying tools
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00584—Clips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter
Definitions
- the present invention relates to a cartridge system housing an endoscopic clip unit and a cartridge housing an endoscopic clip unit.
- a clip unit In endoscopic treatment, a clip unit is used that can ligate the resection area after treatment to stop bleeding, etc.
- the clip unit is equipped with a clip that clamps the resection area, etc., and a pressure tube that houses the clip and locks it in a closed state.
- the clip unit is introduced to the treatment position by a clip introduction device that can be inserted through the channel of the endoscope.
- the clip unit is loaded into the clip introduction device using a cartridge (see, for example, Patent Document 1).
- the present invention aims to provide a cartridge system and cartridge that is less likely to shift the position of the clip unit in the cartridge when loading the clip unit into the clip introduction device, and that allows the clip unit to be easily loaded into the clip introduction device.
- the cartridge according to the second aspect of the present invention is a cartridge capable of housing a clip unit having a clip and a connecting member having a connecting arm connectable to an applicator, and is provided with a case having a storage area in which the clip unit can move along the longitudinal direction, and the case has an inner wall that suppresses the swinging of the connecting arm in the storage area.
- the cartridge system and cartridge of the present invention are less likely to cause the clip unit to shift position in the cartridge when the clip unit is loaded into the clip introduction device.
- FIG. 1 is a perspective view of a clip introduction device of a cartridge system according to a first embodiment.
- FIG. 2 is a perspective view of a clip unit of the cartridge system.
- FIG. 13 is a perspective view of the clip unit with the pressing member shown in transparent form.
- FIG. 4 is a cross-sectional view of the pressing member in the longitudinal direction.
- FIG. FIG. 4 is a perspective view of a pressing tube of the pressing member.
- FIG. 4 is a perspective view of the pressing tube as viewed from the base end side.
- FIG. 4 is a perspective view of a fastening member of the pressing tube.
- 13 is a perspective view of a connecting member of the clip unit.
- FIG. FIG. 13 is a view showing a tip connecting portion in which a breaking portion has broken.
- FIG. 13 shows the tip connector connected to a clip.
- FIG. 2 shows the tip connecting portion connected to the clip.
- FIG. FIG. 4 is a cross-sectional view of the clip unit loaded into a sheath of the clip introduction device.
- FIG. 13 is a perspective view of a cartridge storing the clip unit.
- FIG. 4 is a cross-sectional view of the cartridge in which the clip unit is stored.
- FIG. 11 is a cross-sectional view of the cartridge before the clip unit is stored.
- FIG. 13 is a perspective view of the case in which the clip unit is not stored.
- FIG. 4 is a cross-sectional view of an inner wall along the longitudinal direction. 4 is a cross-sectional view of the inner wall along the width direction.
- FIG. FIG. 4 is a perspective view of a regulating member of the cartridge.
- FIG. 13A is a view showing an intermediate layer member of the regulating member gripped by a pair of arms of the clip unit.
- FIG. 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of loading the clip unit into the clip introduction device using the cartridge.
- 11A to 11C are diagrams illustrating a method of storing the clip unit in the cartridge.
- 11A to 11C are diagrams illustrating a method of storing the clip unit in the cartridge.
- 11A to 11C are diagrams illustrating a method of storing the clip unit in the cartridge.
- FIG. 11A to 11C are diagrams illustrating a method of storing the clip unit in the cartridge.
- 13 is a view showing the clip unit loaded into the clip introduction device.
- FIG. 13A and 13B are views showing the clip unit introduced into the body.
- 13 is a view showing the clip unit with the pair of arms closed.
- FIG. 13 shows the clip unit with the clip locked.
- FIG. 2 is a view showing the clip unit from which the clip has been separated.
- 13A and 13B are diagrams showing modified examples of a pair of beam portions.
- FIG. FIG. 11 is a perspective view of a connecting member of the cartridge system according to the second embodiment. 11 is a perspective view of the connecting member as viewed from the base end side.
- FIG. 13 is a perspective view of the connecting member with the breaking portion broken.
- FIG. 13 is a cross-sectional view showing the connecting member (residue) after the breaking portion has broken and the tip side member has been separated.
- FIG. 11 is a cross-sectional view showing the connecting member (the residue).
- FIG. 56 is an enlarged view of the area surrounded by the dotted line in FIG. 55.
- FIG. 4 is a cross-sectional view showing the state of a base end surface of the connecting member.
- FIG. 4 is a cross-sectional view showing the state of the base end surface.
- FIG. 4 is a cross-sectional view showing the state of the base end surface.
- FIG. 4 is a cross-sectional view showing the state of the base end surface.
- 13A and 13B are diagrams showing modified examples of the base end opening.
- the cartridge system 100 includes a clip unit 1 and a cartridge 5 that houses the clip unit 1.
- the cartridge system 100 is a support system for easily loading the clip unit 1 into a clip introduction device 200.
- FIG. 1 is a perspective view of clip introducing device 200.
- the clip introduction device (applicator) 200 includes a sheath 220, an operating wire 230, and an operating section 240.
- the clip introduction device 200 is inserted, for example, into a treatment tool insertion channel 410 of an endoscope 400 and used in combination with the endoscope 400 ( FIG. 14 ).
- the sheath 220 is formed to be sufficiently longer than the length of the treatment tool insertion channel 410 of the endoscope 400.
- the sheath 220 is flexible and curves in accordance with the curvature of the insertion section of the endoscope 400.
- the sheath 220 includes a distal tip 221, a distal coil 222, and a proximal coil 224, and is formed into an elongated tube shape overall.
- the distal coil 222 is disposed on the distal end side of the sheath 220.
- the distal tip 221 is disposed at the distal end of the distal coil 222.
- the operating wire (power transmission unit) 230 includes an arrowhead hook (connection unit) 231 that is connected to the clip unit 1, and a wire 232 that operates the arrowhead hook 231.
- the arrowhead hook 231 has a generally conical engaging portion 231a that engages with the clip unit 1, and a wire connection portion 231b provided at the base end of the engaging portion 231a.
- the arrowhead hook 231 is made of a metal material such as stainless steel.
- the wire 232 is inserted through the sheath 220 so that it can move back and forth.
- the tip of the wire 232 is fixed to the base end of the wire connection part 231b, for example by welding.
- the operation unit 240 includes an operation unit body 241, a slider 242, and a thumb ring 248.
- the operation unit body 241, the slider 242, and the thumb ring 248 are injection molded from, for example, a resin material.
- the operation unit body 241 includes a slit portion 241a and a rotating grip 241b on the tip side. The slit portion 241a supports the slider 242 so that it can move forward and backward.
- the slider 242 is attached to the operation unit body 241 so that it can move back and forth in the longitudinal direction, and the base end of the wire 232 is attached to it.
- the slider 242 moves back and forth along the operation unit body 241
- the wire 232 moves back and forth relative to the sheath 220, and the arrowhead hook 231 moves back and forth.
- the thumb ring 248 is attached to the base end of the operating unit body 241 so as to be rotatable around the longitudinal axis of the operating unit body 241.
- FIG. 2 is a perspective view of the clip unit 1.
- Fig. 3 is a perspective view of the clip unit 1 with the pressing member 3 being transparently displayed.
- the clip unit 1 includes a clip 2, the pressing member 3, and a connecting member 4.
- the clip 2 side in the longitudinal direction A of the clip unit 1 is referred to as the tip side (distal side) A1 of the clip unit 1, and the connecting member 4 side is referred to as the base side (proximal side) A2 of the clip unit 1.
- the direction perpendicular to the longitudinal direction A is referred to as the "second direction B" or "left-right direction B”.
- the direction perpendicular to the longitudinal direction A and the second direction B is referred to as the "first direction C" or "up-down direction C”.
- the clip (clip arm) 2 is formed by bending a metal plate at the center.
- the clip 2 has a pair of arms 21 that can be opened and closed, and a base end 28 that connects the pair of arms 21.
- the base end side A2 of the clip 2 is inserted into the internal space 38 of the pressing member 3.
- the pair of arms 21 includes a first arm 211 and a second arm 212.
- the first arm 211 and the second arm 212 are arranged on either side of the central axis O1 in the longitudinal direction A of the clip unit 1.
- the clip 2 may have three or more arms.
- the first arm 211 has, from the tip side A1 to the base side A2, a tissue gripping portion 22, a flat gripping portion 23, a sliding portion 24, and an engagement portion 25.
- the tissue gripping portion 22 is formed by bending the tip of the first arm 211 inward.
- the sliding portion 24 is a portion that elastically deforms when the pair of arms 21 are pulled into the pressing member 3.
- the second arm 212 has, from the tip side A1 to the base side A2, a tissue gripping portion 22, a flat gripping portion 23, a sliding portion 24, and an engagement portion 25.
- the tissue gripping portion 22 of the first arm 211 and the tissue gripping portion 22 of the second arm 212 are formed in an asymmetric shape with respect to the central axis O1. Therefore, when attaching the clip 2 to the connecting member 4, the user can easily grasp the orientation of the clip 2 to be attached to the connecting member 4.
- the tissue gripping portion 22 of the first arm 211 and the tissue gripping portion 22 of the second arm 212 may be formed in a symmetric shape with respect to the central axis O1.
- the engaging portion 25 is a member that can engage with the fastening member 32 of the pressing member 3.
- the tip side A1 of the engaging portion 25 is formed as a slope that forms an obtuse angle with respect to the longitudinal direction A, and the base side A2 is formed as a slope that forms an acute angle with respect to the longitudinal direction A.
- the base end 28 connects the first arm 211 and the second arm 212.
- the first arm 211 and the second arm 212 connected by the base end 28 are arranged to be able to open and close freely toward the tip side A1.
- the base end 28 is bent into a U-shape and is connected to the hook 41f of the connecting member 4.
- the base end 28 is biased so that the pair of arms 21 are in an open state. Therefore, the pair of arms 21 of the clip 2 have a self-expanding force in the opening and closing direction P.
- the base end 28 and the hook 41f of the connecting member 4 are connected by inserting the hook 41f of the connecting member 4 into the U-shaped base end 28.
- the opening/closing direction P of the pair of arms 21 approximately coincides with the left-right direction B.
- FIG. 4 is a cross-sectional view of the pressing member 3 in the longitudinal direction A.
- the pressing member (tubular member) 3 is a cylindrical member capable of storing at least a portion of the clip 2.
- the pressing member 3 has an internal space 38 through which the clip 2 advances and retreats in the longitudinal direction A.
- the pressing member 3 can fix the clip 2 in a closed state after it is retracted into the internal space 38.
- the pressing member 3 has a pressing tube 3A provided on the base end side A2 and a pressing pipe 3B provided on the tip end side A1.
- FIG. 5 is a perspective view of the pressing tube 3A.
- the pressure tube (second tubular member) 3A has a pressure tube main body 30 formed in a cylindrical shape, a protruding and recessed wing 31, and a fastening member 32.
- the clamping tube body 30 is formed by injection molding a material that is softer than the clip 2, such as a thermoplastic resin with appropriate elasticity, such as PPA (polyphthalamide), PA (polyamide), PEEK (polyether ether ketone), or LCP (liquid crystal polymer).
- a thermoplastic resin with appropriate elasticity such as PPA (polyphthalamide), PA (polyamide), PEEK (polyether ether ketone), or LCP (liquid crystal polymer).
- the clamping tube body 30 may be formed from a metal instead of a thermoplastic resin.
- FIG. 6 is a perspective view of the pressing tube 3A as viewed from the base end side A2.
- An engagement recess 30r that engages with the engagement protrusion 43p of the connecting member 4 is formed in the base end opening 3d of the pressing tube main body 30.
- the engagement recesses 35 are provided on both sides of the central axis O1.
- the retractable wings 31 are a pair of protruding parts that retract from the outer circumferential surface 30a of the clamping tube main body 30.
- the retractable wings 31 are provided on both sides of the central axis O1.
- the retractable wings 31 have a basic position in which they protrude outward in the radial direction R from the outer circumferential surface 30a. When the retractable wings 31 receive a force from the outside toward the inside in the radial direction R, they become retracted into the outer circumferential surface 30a. When the force is released, the retractable wings 31 return from the retracted state to the protruding state.
- the fastening member 32 is a ring-shaped member provided in the internal space 38 of the holding tube 3A.
- the fastening member 32 is made of metal. Note that the fastening member 32 only needs to be made harder than the holding tube main body 30, and may be made of, for example, a thermoplastic resin instead of a metal.
- the fastening member 32 is arranged so that the central axis of the fastening member 32 coincides with the central axis O1.
- the fastening member 32 is arranged on the base end side A2 from the protruding and recessed wing 31.
- the fastening member 32 is incorporated into the holding tube main body 30, for example, by insert molding.
- the fastening member 32 is arranged in a position that protrudes inward in the radial direction R from the inner circumferential surface of the holding tube main body 30.
- FIG. 7 is a perspective view of the fastening member 32.
- the fastening member 32 has a tapered surface 32t formed on the base end side A2 such that the inner diameter decreases from the base end side A2 toward the tip end side A1. Because the fastening member 32 has the tapered surface 32t, the connecting member 4 can be easily inserted into the fastening member 32 from the base end side A2.
- the clamping pipe (first tubular member) 3B is a cylindrical member made of metal.
- the clamping pipe 3B is press-fitted into the tip of the clamping tube 3A.
- the clamping tube 3A and the clamping pipe 3B may be connected by heat welding, adhesive bonding, or screw fastening.
- FIG. 8 is a perspective view of the connecting member 4.
- the connecting member 4 is detachably connected to the base end 28 of the clip 2.
- the connecting member 4 is also detachably connected to the arrowhead hook 231 that passes through the sheath 220. That is, the connecting member 4 connects the clip 2 to the arrowhead hook 231.
- the connecting member 4 includes a tip connecting portion 41 provided at the tip, a base end connecting portion 42 provided at the base end, and a rod-shaped portion 45 that connects the tip connecting portion 41 and the base end connecting portion 42.
- the tip connecting portion 41 has a hook 41f at the tip, a breaking portion 41b provided on the base end side A2 of the hook 41f, a tip expansion portion 41e, a first protrusion 41w, a second protrusion 41g, a third protrusion 41p, and a fourth protrusion 41q.
- the tip connecting portion 41 can be inserted through the internal space 38 of the pressing member 3 when connected to the clip 2.
- the hook 41f extends in the vertical direction C perpendicular to the central axis O1, and is formed in a generally cylindrical rod shape.
- the hook 41 extends from the "lower side” to the “upper side” in the vertical direction C.
- the base end 28 of the clip 2 is hooked from above onto the hook 41f.
- FIG. 9 is a diagram showing the tip connecting portion 41 in which the breaking portion 41b is broken.
- the breaking portion 41b breaks when the base end 28 is pulled toward the base end side A2, and a breaking force of, for example, 20 N (Newtons) to 90 N is applied to the hook 41f.
- the breaking portion 41b may have a mechanism for releasing the connection between the base end 28 of the clip 2 and the hook 41f of the connecting member 4.
- the breaking portion 41b may have a mechanism for releasing the connection between the base end 28 and the hook 41f by deforming (plastic deformation or elastic deformation) without breaking.
- the tip extension 41e is a member that protrudes from the tip side A1 of the hook 41f.
- the tip extension 41e has a tapered shape that narrows toward the tip side A1 in both the up-down direction C and the left-right direction B.
- FIG. 10 and 11 are views showing the tip connecting portion 41 connected to the clip 2.
- FIG. 10 when the pair of arms 21 are in the open state, the tip of the tip expansion portion 41e is disposed on the tip side A1 of the engaging portion 25 of the clip 2, and is also disposed on the tip side A1 of the fastening member 32.
- the tip expansion portion 41e can contact the inner peripheral surface 32a of the fastening member 32 in the vertical direction C. Therefore, the clip 2 connected to the tip connecting portion 41 is less likely to rattle relative to the tip connecting portion 41 in the vertical direction C.
- the first protrusion 41w is a member provided on the hook 41f that protrudes in the left-right direction B.
- the first protrusion 41w is a pair of wing-shaped protrusions that extend on both sides in the left-right direction B at the upper end of the hook 41f, which extends toward the upper side in the up-down direction C.
- the first protrusion 41w has a shape that is symmetrical with respect to the central axis O1.
- the first protrusion 41w is a member that presses the upper surface 28a of the clip 2 downward.
- the first protrusion 41w may be any member that presses the clip 2 downward, for example, a member that protrudes from the hook 41f in the longitudinal direction A.
- the first protrusion 41w may be a member that has elasticity, and may elastically deform in the vertical direction C to press the clip 2 downward.
- the first protrusion 41w overlaps at least a portion of the upper surface 28a of the base end 28 of the clip 2. Therefore, the clip 2 connected to the tip connecting part 41 is less likely to wobble relative to the tip connecting part 41 in the up-down direction C.
- FIG. 12 is a cross-sectional view of the tip connecting portion 41.
- the second protrusion 41g is a member provided on the hook 41f and protrudes in the left-right direction B.
- the second protrusion 41g extends in the up-down direction C below the first protrusion 41w, and is a pair of protrusions extending on both sides in the left-right direction B.
- the second protrusion 41g has a symmetrical shape with respect to the central axis O1.
- FIG. 13 is a perspective cross-sectional view of the tip connecting portion 41.
- the second protrusion 41g is disposed at a position where it abuts against the pair of arms 21.
- the second protrusion 41g is disposed on the distal end side A1 of the fastening member 32, and is disposed on the proximal end side A2 of the engaging portion 25 in a state where the engaging portion 25 abuts against the fastening member 32.
- the amount of traction force required to lock the pair of arms 21 in the closed state is not a small amount of force, but an appropriate amount of force. As a result, it is possible to prevent the operator from unintentionally locking the pair of arms 21 in the closed state.
- the third protrusion 41p is a member provided on the hook 41f that protrudes in the left-right direction B.
- the third protrusion 41p is a pair of protrusions that extend on both sides in the left-right direction B at the lower end side of the hook 41f that extends toward the upper side in the up-down direction C.
- the third protrusion 41p has a shape that is symmetrical with respect to the central axis O1.
- the first protrusion 41w and the third protrusion 41p are arranged on both sides in the up-down direction C, sandwiching the pair of connected arms 21 between them.
- the third protrusion 41p is located in the fragment on the tip side A1 of the breaking portion 41b. Even when the breaking portion 41b breaks, the third protrusion 41p remains engaged with the pair of arms 21. This prevents the fragment from falling off the pair of arms 21.
- the fourth protrusion 41q is a member provided on the hook 41f that protrudes toward the base end side A2 in the longitudinal direction A.
- the fourth protrusion 41q is a protrusion that protrudes toward the base end side A2 at the upper end of the hook 41f that extends toward the upper side in the vertical direction C.
- the fourth protrusion 41q is positioned above the base ends 28 of the pair of connected arms 21. This makes it possible to prevent the base ends 28 of the pair of arms 21 from coming off the tip connecting portion 41.
- the base end connecting part 42 is an engagement part with which the arrowhead hook 231 of the clip introduction device 200 is engaged (connected).
- the base end connecting part 42 has a connecting part main body 43 and a connecting arm 44.
- the connecting part body 43 is provided at the base end of the rod-shaped part 45.
- the connecting part body 43 is formed with an engagement protrusion 43p that protrudes in the vertical direction.
- the engagement protrusion 43p engages with an engagement recess 30r provided at the base end opening of the pressing member 3, thereby restricting the relative rotation of the pressing member 3 and the connecting member 4 in the circumferential direction with respect to the longitudinal direction A.
- the connecting arm (a pair of legs) 44 is provided at the base end of the connecting body 43 and is bifurcated.
- the connecting arm 44 is elastically deformable in the vertical direction C relative to the connecting body 43 and can be opened and closed relative to the connecting body 43.
- the connecting arm 44 is formed with a notch 44m that grips and stores the engaging portion 231a of the arrowhead hook 231.
- the notch 44m is formed in a shape that fits closely to the outer circumferential surface of the engaging portion 231a of the arrowhead hook 231.
- the connecting arm 44 can be connected to the arrowhead hook 231 of the clip introduction device 200 when in the open state, and can maintain the connection to the arrowhead hook 231 of the clip introduction device 200 when in the closed state.
- the rod-shaped portion 45 is a generally rod-shaped member extending in the longitudinal direction A.
- the rod-shaped portion 45 is provided between the tip connecting portion 41 and the base connecting portion 42, and connects the tip connecting portion 41 and the base connecting portion 42.
- the rod-shaped portion 45 can be inserted through the internal space 38 of the pressing member 3.
- the rod-shaped portion 45 is formed in an elliptical shape in a cross section perpendicular to the longitudinal direction A, with a first length in the left-right direction B being shorter than a second length in the up-down direction C.
- the rod-shaped portion 45 may also be formed in a rectangular or elliptical shape in a cross section perpendicular to the longitudinal direction A, with a first length being shorter than the second length.
- FIG. 14 is a cross-sectional view of the clip unit 1 loaded into the sheath 220.
- the clip unit 1 loaded in the sheath 220 is introduced into a treatment position by passing through a treatment tool insertion channel 410 of the curved endoscope 400.
- the connecting member 4 has a rod-shaped portion 45 whose first length in the left-right direction B is shorter than its second length in the left-right direction B, and is more likely to bend in the left-right direction B than in the up-down direction C.
- the sheath 220 and the clip unit 1 loaded in the sheath 220 are also referred to as a clip device 300.
- the clip unit 1 can easily pass through the curved treatment tool insertion channel 410 by aligning the curved direction of the treatment tool insertion channel 410 with the left-right direction B.
- the engagement portion 231a of the arrowhead hook 231 can protrude from the base end connecting portion 42 in the left-right direction B. Therefore, the clip device 300 is easily bent in the left-right direction B.
- Fig. 15 is a perspective view of the cartridge 5 storing the clip unit 1.
- Fig. 16 is a cross-sectional view of the cartridge 5 storing the clip unit 1.
- the cartridge 5 has a case 6 and a restricting member 7.
- the length of the cartridge 5 in the longitudinal direction L is about 50 mm, the width is about 10 mm to 20 mm, and the thickness (height) is about 5 mm, so that the cartridge 5 is formed to a size that is easy to hold in the hand.
- the width direction W and the other as the “height direction H.”
- a plane that is horizontal to the longitudinal direction L and the width direction W is referred to as the "horizontal plane HP.”
- a plane that is horizontal to the longitudinal direction L and the height direction H is referred to as the "vertical plane VP.”
- the pair of arms 21 side is referred to as the tip side of the cartridge 5, and the connecting member 4 side is referred to as the base side of the cartridge 5.
- the case 6 has a case body 60, a compression section 65, and a sheath connection section 66.
- the case 6 has an appropriate hardness and is manufactured by injection molding using a transparent resin material such as ABS, PC, PP, PS, acrylic, or cycloolefin polymer. Because the case 6 is formed using a transparent resin material, it is easy for the user to determine whether or not the clip unit 1 is present inside.
- the case body 60 is formed in a rectangular box shape.
- the length of the width direction W of the case body 60 is longer than the length of the height direction H of the case body 60.
- the case body 60 is formed with a storage area 6S in which the clip unit 1 is stored so as to be movable in the longitudinal direction L, and a sheath insertion area 68 in which the sheath 220 is inserted.
- the storage area 6S has a first area 61, a second area 62, and a folding area 63. As shown in FIG. 16, the first area 61, the second area 62, and the folding area 63 are arranged from the tip to the base end in the longitudinal direction L.
- the first area 61, the second area 62, and the folding area 63 are internal spaces formed symmetrically with respect to a vertical plane VP that includes the central axis O2 in the longitudinal direction L of the cartridge 5.
- FIG. 17 is a cross-sectional view of the cartridge 5 before the clip unit 1 is stored.
- the clip unit 1 is stored in the storage area 6S from a tip opening 60b formed on the tip side of the storage area 6S of the case body 60.
- the clip unit 1 is stored in the cartridge 5 from the connecting member 4 side.
- the clip unit 1 is stored in the storage area 6S with the central axis O1 of the clip unit 1 aligned along the longitudinal direction L.
- the clip unit 1 is stored in the storage area 6S with the opening/closing direction P of the pair of arms 21 aligned with the width direction W of the case 6.
- the first area 61 is an internal space in which the clip unit 1 is stored so as to be movable in the longitudinal direction L.
- the first area 61 is connected to the second area 62.
- the first area 61 has a locking portion 64.
- FIG. 18 is a perspective view of the case 6 without the clip unit 1 stored therein.
- the locking portions 64 are formed on the tip side of the first region 61, on one side (upper side) and the other side (lower side) in the height direction H.
- the two locking portions 64 are formed symmetrically with respect to a horizontal plane HP including the central axis O2. Note that the locking portion 64 may be formed on only one of the side (upper side) and the other side (lower side) of the first region 61 in the case body 60.
- FIG. 19 is a perspective view showing the locking portion 64.
- the locking portion 64 has an elastically deforming portion 64a and an locking protrusion 64b.
- the elastically deforming portion 64a is formed in a flat plate shape, and only an end portion 64c on the tip side in the longitudinal direction L is fixed to the case body 60.
- the elastically deforming portion 64a elastically deforms as a cantilever beam with the end portion 64c fixed to the case body 60 as the fixed end.
- FIG. 20 is a front view of the case 6 as viewed in the direction of the arrow shown in FIG.
- the locking protrusion 64b is provided on an end 64d of the elastic deformation portion 64a on the base end side in the longitudinal direction L. As shown in Fig. 20, the locking protrusion 64b protrudes toward the first area 61 of the storage area 6S when no external force is applied (initial state).
- the locking protrusion 64b has an inclined surface 64s and a locking surface 64t.
- the inclined surface 64s is formed on the tip side of the locking protrusion 64b in the longitudinal direction L.
- the inclined surface 64s is inclined with respect to the central axis O2, and the normal of the inclined surface 64s faces the tip side in the longitudinal direction L.
- the locking surface 64t is formed on the base end side of the locking protrusion 64b in the longitudinal direction L.
- the locking surface 64t is formed on a plane that is approximately perpendicular to the central axis O2, and the normal line of the inclined surface 64s faces the base end side in the longitudinal direction L.
- the second area 62 is an internal space in which the clip unit 1 is stored so as to be movable in the longitudinal direction L.
- the length of the second area 62 in the longitudinal direction L is shorter than the length of the first area 61 in the longitudinal direction L.
- the second area 62 is connected to the folded area 63.
- the length W1 in the width direction W of the first region 61 is smaller than the opening width W3 of the pair of arms 21 in the open state. Also, the length W2 in the width direction W of the second region 62 is larger than the opening width W3 of the pair of arms 21 in the open state.
- the second region 62 has openings 62b on both sides in the width direction W.
- the edges of the openings 62b are rectangular and extend in the height direction H and the longitudinal direction L.
- the folded region 63 has an enlarged diameter portion 63a, a tapered portion 63b, and a reduced diameter portion 63c.
- the enlarged diameter portion 63a, the tapered portion 63b, and the reduced diameter portion 63c are arranged from the tip to the base end.
- the expanded diameter portion 63a is an area that allows the connecting arm 44 of the connecting member 4 to elastically expand (open and close). In the expanded diameter portion 63a, when the arrowhead hook 231 of the clip introduction device 200 and the connecting member 4 of the clip unit 1 engage, the connecting arm 44 of the connecting member 4 can open and close in a direction perpendicular to the central axis O1.
- the tapered portion 63b is provided on the base end side of the enlarged diameter portion 63a and is formed in a tapered shape.
- the tapered portion 63b is enlarged in diameter from the base end side toward the tip end side. Therefore, when the holding member 3 is slid from the tip end side toward the base end side, the protruding and recessed wings 31 of the holding member 3 are stored inside the holding tube main body 30.
- the reduced diameter portion 63c is an area that holds the retractable wing 31 in a retracted state.
- the reduced diameter portion 63c is an area that does not allow the connecting arm 44 of the connecting member 4 to elastically expand (open or close).
- the reduced diameter portion 63c which is smoothly connected to the tapered portion 63b, can hold the protruding and retracting wings 31 of the holding member 3 in a stored state (retracted state).
- the compression section 65 is a plate-shaped member provided at the base end of the case body 60.
- the compression section 65 has a first compression section 651 and a second compression section 652.
- the first compression section 651 and the second compression section 652 are provided opposite each other in the height direction H of the case 6.
- the sheath insertion region 68 is the region into which the tip of the sheath 220 that has passed through the sheath connection portion 66 is inserted.
- the sheath insertion region 68 is located on the base end side of the folding region 63 and is connected to the folding region 63. At the portion that connects to the folding region 63, the length in the width direction W of the sheath insertion region 68 is longer than the length in the width direction W of the folding region 63.
- the sheath insertion region 68 is formed with a sheath abutment portion 68a against which the tip tip 221 of the advanced sheath 220 can abut (see FIG. 28).
- FIG. 21 is a cross-sectional view of the inner wall 69 along the longitudinal direction L.
- An inner wall 69 is formed in the storage area 6S.
- the inner wall (sway suppression mechanism) 69 suppresses the swing of the connecting arm 44.
- the inner wall 69 has a first inner wall 691 that suppresses the swing of the connecting arm 44 in the height direction H, and a second inner wall 692 that suppresses the swing of the connecting arm 44 in the width direction W.
- the first inner wall (vertical sway control mechanism) 691 is positioned so as to be engageable with the connecting member 4 of the clip unit 1 stored in the storage area 6S. When the clip unit 1 hits the end in the longitudinal direction A in the storage area 6S, the first inner wall 691 and the connecting arm 44 are positioned to overlap in the longitudinal direction A.
- the first inner wall (vertical sway control mechanism) 691 has a pair of beams 69f provided on both sides in the height direction H.
- the pair of beams 69f are fixed to the base end side of the case body 60 and are cantilevers extending toward the base end side of the case body 60.
- the first end (fixed end) 69a of the beam 69f is fixed to the case body 60, and the second end (free end) 69b of the pair of beams 69f is spaced apart from the case body 60.
- the second end 69b protrudes inward in the height direction H compared to the first end 69a.
- the pair of beams 69f can transition between a first state (see FIG. 21) in which the length between the pair of beams 69f in the up-down direction C is a first length H1, and a second state (see FIG.
- the length between the pair of beams 69f in the up-down direction C is a second length H2 that is longer than the first length H1.
- the first length H1 between the pair of beams 69f is greater than the outer width H41 of the connecting arm 44 in the closed state (see FIG. 28).
- the pair of beams (fingers) 69f are housed in a recess 60r provided in the case body 60.
- the recess 60r may be a through hole that penetrates the case body 60 in the height direction H, or may be a recess that does not penetrate the case body 60. Even when the pair of beams 69f elastically deform and transition to the second state, they do not protrude outside the case body 60 in the height direction H. Therefore, the elastic deformation of the pair of beams 69f is not hindered by the fingers of the user operating the case 6.
- FIG. 22 is a cross-sectional view of the inner wall 69 along the width direction W.
- the second inner wall (lateral sway suppression mechanism) 692 is an inner wall facing the width direction W, and engages with the connecting arm 44 to suppress swaying of the connecting arm 44 in the width direction W.
- a pair of second inner walls 692 are provided on both sides in the width direction W, and two of them are arranged in the height direction H.
- the compression portion 65 has a connecting portion 65a that connects to the case body 60.
- the connecting portion 65a connects the first compression portion 651 and the second compression portion 652 separately to the case body 60.
- the connecting portion 65a is bent so that the first compression portion 651 and the second compression portion 652 are spaced apart from each other. Therefore, a gap 65b is formed between the first compression portion 651 and the second compression portion 652.
- the first compression portion 651 and the second compression portion 652 are farther apart on the base end side than on the tip end side.
- the first compression section 651 and the second compression section 652 are formed to a size suitable for pinching with fingers, for example, about 20 mm square.
- the outer surfaces of the first compression section 651 and the second compression section 652 are formed with a plurality of recesses 65c, for example, hemispherical, to prevent slipping during compression.
- the sheath connection portion 66 is an insertion groove into which the sheath 220 can be inserted.
- the sheath connection portion 66 is an arc-shaped groove formed on the inner surface of the first compression portion 651 and the second compression portion 652, and is connected to the sheath insertion region 68.
- the user can fix the sheath 220 to the case 6 by inserting the sheath 220 into the sheath connection portion 66 from the proximal end opening 67 and squeezing the first compression portion 651 and the second compression portion 652.
- Fig. 23 is a perspective view of the restricting member 7.
- Fig. 24 is a plan view of the restricting member 7.
- the restricting member (slider) 7 is movably stored in the first area 61 and the second area 62 together with the clip unit 1.
- the restricting member 7 is formed, for example, from the same resin as the case 6.
- the restricting member 7 does not have to be formed from a transparent resin like the case 6.
- the restricting member 7 is formed in a shape symmetrical with respect to a vertical plane VP and a horizontal plane HP including a central axis O3 in the longitudinal direction L of the restricting member 7.
- the regulating member 7 has a middle layer member 70 and a guide member 8.
- the middle layer member 70 has a tip portion 71, a protruding portion 72, a tapered portion 73, and a base end portion 74.
- the tip portion 71, the protruding portion 72, the tapered portion 73, and the base end portion 74 are arranged from the tip to the base end along the central axis O3 direction of the regulating member 7.
- FIG. 25 is a diagram showing the intermediate member 70 of the regulating member 7 held by the pair of arms 21.
- the middle layer member 70 is held by the clip 2 with the central axis O3 substantially aligned with the central axis O1 of the clip unit 1.
- the clip unit 1 is stored in the storage area 6S with the clip 2 holding the restricting member 7. At this time, it is desirable that the central axis O1, the central axis O2, and the central axis O3 are aligned with each other.
- the tip portion 71 is provided so as to protrude from the protruding portion 72 toward the tip side.
- the tip of the tip portion 71 is located further forward than the tissue gripping portion 22 of the clip 2 that grips the restricting member 7.
- the tip of the tip portion 71 is formed in a plane perpendicular to the central axis O3.
- the protruding portion 72 is a member that protrudes in a direction (hereinafter also referred to as the "protruding direction P") that is approximately perpendicular to the central axis O3.
- the protruding portion 72 is provided on both sides of the central axis O3.
- the protruding portion 72 is grasped by a first arm 211 and a second arm 212.
- the opening/closing direction P of the pair of arms 21 that grasp the protruding portion 72 approximately coincides with the protruding direction P of the protruding portion 72.
- the first arm 211 and the second arm 212 are formed in an asymmetric shape with respect to the central axis O1. Therefore, as shown in FIG. 25, the first arm 211 and the second arm 212 that grasp the protruding portion 72 are disposed in an asymmetric position with respect to the central axis O3.
- the portion of the protruding portion 72 that protrudes most from the central axis O3 in the protruding direction P is the maximum protruding point 72b.
- the length W4 between the maximum protruding points 72b is slightly smaller than the length W1 of the width direction W of the first region 61. Therefore, the restricting member 7 is maintained in a state where it is gripped by the pair of arms 21 in the first region 61.
- the tapered portion 73 is a member formed in a tapered shape.
- the tapered portion 73 is provided on both sides of the central axis O3.
- the length of the tapered portion 73 in the protruding direction P is shorter than that of the protruding portion 72.
- the length of the tapered portion 73 in the protruding direction P becomes shorter as it moves from the tip side to the base end side.
- the base end 74 is a member formed to protrude from the tapered portion 73 toward the base end.
- the guide member 8 adjusts the position of the regulating member 7 in the height direction H so that the protrusion 72 is gripped by the pair of arms 21.
- the guide member 8 also guides the regulating member 7 so that the regulating member 7 moves in the first region 61 along the longitudinal direction L.
- the guide member 8 has an upper layer guide member 8U provided on one side (upper side) in the height direction H, and a lower layer guide member 8L provided on the other side (lower side) in the height direction H.
- the middle layer member 70 is sandwiched between the upper layer guide member 8U and the lower layer guide member 8L in the height direction H.
- the upper layer guide member 8U and the lower layer guide member 8L are formed in a symmetrical shape with respect to a horizontal plane HP including the central axis O3.
- the upper guide member 8U has an engagement portion 80, a wing portion 87, and a pressing portion 89.
- the engagement portion 80, the wing portion 87, and the pressing portion 89 are arranged from the tip to the base end along the central axis O3 of the regulating member 7.
- the engagement portion 80 of the upper guide member 8U has an engagement recess 83 formed on one side (upper side) in the height direction H.
- the engagement recess is a recess that engages with the engagement protrusion 64b of the engagement portion 64.
- the engagement recess 83 is formed in a generally rectangular shape when viewed from the height direction H.
- the area of the engagement portion 80 where the engagement recess 83 is not formed is formed in a U-shape when viewed from the above plane.
- the engagement recess 83 has an engagement surface 84 on the base end side in the longitudinal direction L that engages with the engagement protrusion 64b of the engagement portion 64.
- the engagement surface 84 is formed in a plane that is approximately perpendicular to the central axis O3.
- the engagement recess 83 has a notch 85 formed on the tip side in the longitudinal direction L. Therefore, the recessed space 86 of the engagement recess 83 is connected to the space on the tip side in the longitudinal direction L.
- the wing portion 87 is provided on the base end side of the engaging portion 80, and is a pair of wing-shaped members extending on both sides in the width direction W. As shown in FIG. 24, the length in the width direction W of the wing portion 87 extending on both sides in the width direction W is approximately equal to the length in the width direction W of the engaging portion 80.
- a notch portion 88 is formed between the wing portion 87 and the engaging portion 80, cut out toward the inside in the width direction W. The notch portion 88 forms a through space 8S that penetrates the upper layer guide member 8U in the height direction H.
- the through space 8S is divided into an outer through space 8X that is located outside the pair of arms 21 in the width direction W, and an inner through space 8Y that is located inside the pair of arms 21 in the width direction W.
- the through space 8S that overlaps with at least a portion of the first arm 211 gripping the protruding portion 72 of the middle layer member 70 is also referred to as the first through space 81.
- the through space 8S that overlaps with at least a portion of the second arm 212 gripping the protruding portion 72 of the middle layer member 70 is also referred to as the second through space 82.
- the holding portion 89 is a member that regulates the minimum approach distance between the clip 2 and the holding member 3.
- the holding portion 89 is provided on the base end side of the wing portion 87. As shown in FIG. 7, the holding portion 89 engages with the edge of the tip opening 3a of the holding member 3, and therefore cannot enter the internal space of the holding member 3 from the tip opening 3a. Therefore, even if the clip 2 is pulled in a direction approaching the holding member 3, the holding portion 89 engages with the edge of the tip opening 3a, thereby regulating the minimum approach distance between the clip 2 and the holding member 3.
- the lower guide member 8L like the upper guide member 8U, has an engagement portion 80, a wing portion 87, and a pressing portion 89.
- the lower guide member 8L is formed in a shape symmetrical to the upper guide member 8U with respect to the horizontal plane HP including the central axis O3.
- the restricting member 7 is stored in the first region 61 while being held by the pair of arms 21.
- the length W1 of the width direction W of the first region 61 is smaller than the opening width W3 of the pair of arms 21 in the open state. Therefore, the pair of arms 21 grip the restricting member 7 when they are closed from the open state.
- the opening width of the pair of arms 21 is approximately the length W1 of the width direction W of the first region 61.
- the pair of arms 21 abut against the case body 60 in the opening/closing direction P.
- FIGS. 26 to 39 are views for explaining a method of loading the clip unit 1 into the clip introducer device 200 using the cartridge 5.
- the user inserts the sheath 220 of the clip introduction device 200 from the proximal opening 67 into the sheath connection portion 66 of the case 6.
- the user squeezes the sheath 220 with the squeezing portion 65 to fix the sheath 220 to the case 6.
- the user operates the operating portion 240 to advance the operating wire 230 relative to the sheath 220, thereby advancing the arrowhead hook 231.
- the arrowhead hook 231 advances the connecting member 4, causing the restricting member 7 and clip unit 1 to advance.
- the locking surface 84 of the restricting member 7 abuts and engages with the locking surface 64t of the locking portion 64.
- the clip unit 1 cannot advance beyond that position toward the tip end.
- the locking portion 64 restricts the passage of the clip unit 1 moving toward the tip end.
- the advancing arrowhead hook 231 engages with the connecting arm 44 of the connecting member 4 of the clip unit 1 in the height direction H.
- the arrowhead hook 231 elastically deforms the connecting arm 44 in the height direction H, pushing the connecting arm 44 apart in the height direction H.
- the pair of beams 69f receive an external force from the connecting arms 44, and are deformed so as to bend outward in the height direction H.
- the beams 69f are positioned close to the connecting arms 44, and by coming into contact with the connecting member 4, they suppress the shaking of the connecting member 4 in the height direction H.
- the pair of beams 69f only needs to be long enough to cover at least a portion of the connecting arm 44. This allows the pair of beams 69f to come into contact with the outer diameter of the connecting arm 44, suppressing shaking of the connecting member 4 in the height direction H.
- the second length H2 between the pair of beams 69f in the second state can be greater than the outer width H42 of the connecting arm 44 in the open state.
- the advancing arrowhead hook 231 pushes the connecting arm 44 apart until the gap is wide enough to allow the arrowhead hook 231 to be inserted inside.
- the second inner wall 692 engages with the connecting arm 44 to suppress shaking of the connecting arm 44 in the width direction W.
- the advancing arrowhead hook 231 is clamped by the connecting arm 44 of the connecting member 4 of the clip unit 1 and connected to the connecting member 4.
- the locking surface 84 of the regulating member 7 is formed in a plane that is approximately perpendicular to the central axis O3. Furthermore, the locking surface 64t of the locking portion 64 is formed in a plane that is approximately perpendicular to the central axis O2. Therefore, the regulating member 7 moving from the base end side to the tip end side is unlikely to push the locking portion 64 away to one side (upward) in the height direction H. Furthermore, even if the locking surface 84 of the regulating member 7 abuts against and engages with the locking surface 64t of the locking portion 64, the central axis O1 of the clip unit 1 is unlikely to shift relative to the central axis O2 of the storage area 6S.
- the restricting member 7 Even if the restricting member 7 does not have an engagement recess 83, the restricting member 7 moves from the base end to the tip end, and abuts against and engages with the engagement surface 64t of the engagement portion 64. As a result, the advancing arrowhead hook 231 is connected to the connecting member 4 in the same manner as described above.
- the user pulls the operating wire 230.
- the clip 2 of the clip unit 1 is pulled toward the base end by the connecting member 4 connected to the arrowhead hook 231.
- the hook 41f of the connecting member 4 pulls the base end 28 of the clip 2 without breaking.
- the restricting member 7 moves in the first area 61 of the storage area 6S while in contact with the pair of arms 21.
- the pressing portion 89 of the restricting member 7 engages with the edge of the tip opening 3a of the pressing member 3, so that the pressing member 3 is pulled toward the base end together with the clip 2.
- the pair of arms 21 abut against the case body 60 in the opening/closing direction P in the first region 61.
- the frictional force generated by the pair of arms 21 abutting against the case body 60 effectively prevents the clip 2 from being pulled into the internal space of the pressing member 3 and being locked in the closed state by the pressing member 3.
- the pressing portion 89 of the restricting member 7 engages with the edge of the distal opening 3a of the pressing member 3, thereby restricting the minimum approach distance between the clip 2 and the pressing member 3.
- the pressing portion 89 comes into contact with the pressing member 3 while in contact with the pair of arms 21 due to the pulling of the operating wire 230, and restricts the relative movement of the restricting member 7 with respect to the pressing member 3. This also makes it possible to preferably prevent the clip 2, which is pulled toward the base end by the connecting member 4, from being drawn into the internal space of the pressing member 3 and being locked in the closed state by the pressing member 3.
- the holding member 3 passes through the folded region 63.
- the holding member 3 slides along the reduced diameter portion 63c from the tip side toward the base end, and the protruding and recessed wings 31 of the holding member 3 are stored inside the holding tube main body 30.
- the user further pulls the operating wire 230 to pull the restricting member 7 to the second region 62.
- the length W2 of the width direction W of the second region 62 is greater than the opening width W3 of the pair of arms 21 in the open state. Therefore, the restricting member 7 is not gripped by the pair of arms 21 in the second region 62.
- the pressing portion 89 of the regulating member 7 elastically deforms outward in the height direction H when it comes into contact with the pair of arms 21. At this time, the pressing portion 89 pushes the pair of beam portions 69f outward in the height direction H.
- the user further pulls the operating wire 230.
- the wing portion 87 of the restricting member 7 engages with the end face on the base end side of the second region 62. As a result, the restricting member 7 is not further pulled toward the base end.
- the user further pulls the operating wire 230.
- the clip 2 separates from the restricting member 7 and is pulled toward the base end.
- the restricting member 7 has a tapered portion 73 formed on the base end side of the protruding portion 72 that was gripped by the pair of arms 21. Therefore, when the restricting member 7 is pulled toward the base end, the pair of arms 21 are less likely to get caught on the restricting member 7.
- the user further pulls the operating wire 230. Because the pair of arms 21 do not grip the restricting member 7, the minimum approach distance between the clip 2 and the holding member 3 is not restricted.
- the clip 2 pulled toward the base end is pulled into the internal space of the holding member 3 and into the sheath 220.
- the clip 2 may be pulled into the sheath 220 without being pulled into the internal space of the holding member 3. This completes the loading of the clip unit 1 into the clip introduction device 200.
- the user releases the compression of the sheath 220 by the compression section 65 and pulls out the sheath 220 from the case 6.
- FIGS. 40 to 43 are views for explaining a method of storing the clip unit 1 in the cartridge 5.
- the user closes the pair of arms 21 with their hands or the like, and causes the pair of arms 21 to grip the restricting member 7.
- the user inserts the clip unit 1 gripping the restricting member 7 into the storage area 6S of the cartridge 5 from the tip opening 60b.
- the user moves the clip unit 1 toward the base end by pushing the restricting member 7 toward the base end.
- the length W1 in the width direction W of the first region 61 is smaller than the opening width W3 of the pair of arms 21 in the open state. Therefore, when the pair of arms 21 holding the restricting member 7 are inserted into the first region 61, the first arm 211 contacts one end of the tip opening 60b in the width direction W, and the second arm 212 contacts the other end of the tip opening 60b in the width direction W.
- the pair of arms 21 that are in contact with the tip opening 60b are further closed and inserted into the first region 61.
- the locking portion 64 elastically deforms as a cantilever beam with the end 64c on the tip side in the longitudinal direction L as a fixed end and the end 64d on the base side in the longitudinal direction L as a free end. Therefore, the regulating member 7 moving from the tip side to the base end side easily elastically deforms and pushes aside the locking portion 64.
- an inclined surface 64s is formed on the tip side of the locking protrusion 64b in the longitudinal direction L.
- the regulating member 7 moving from the tip side to the base end comes into contact with the locking protrusion 64b of the locking portion 64, the regulating member 7 comes into contact with the inclined surface 64s. Therefore, the regulating member 7 moving from the tip side to the base end tends to push the locking portion 64 to one side (upper side) in the height direction H.
- the restricting member 7 can pass by moving from the tip side to the base end, pushing the locking portion 64 aside to one side (upper side) in the height direction H.
- the restricting member 7 has the engagement recess 83, the distance over which the restricting member 7 passes while pushing the locking portion 64 upward is short, making it easier for the user to operate.
- FIG. 44 is a diagram showing the clip unit 1 loaded into the clip introduction device 200.
- the clip unit 1 is loaded into the clip introducing device 200 using the cartridge 5.
- the connecting member 4 of the clip unit 1 loaded into the clip introducing device 200 is connected to an arrowhead hook 231 that passes through the inside of the sheath 220.
- the retractable wings 31 are pressed against the inner circumferential surface of the sheath 220 and are in a retracted state.
- the pair of arms 21 of the loaded clip unit 1 are pressed against the inner circumferential surface of the sheath 220 and are in a closed state.
- the engagement portion 25 is located on the distal side A1 of the fastening member 32, and the pair of arms 21 are not locked in the closed state.
- FIG. 45 is a diagram showing the clip unit 1 introduced into the body.
- the surgeon introduces the clip unit 1 loaded in the sheath 220 into the body via the channel of the endoscope.
- the surgeon advances the arrowhead hook 231 by advancing the slider 242 along the operation portion main body 241.
- the surgeon advances the clip unit 1 until the protruding/retracting wing 31 comes out of the sheath 220.
- the protruding/retracting wing 31 returns from the retracted state to the protruding state, which is the basic position.
- the self-expanding force of the pair of arms 21 acts as a restoring force, and the clip 2 returns to the open state while moving toward the distal end relative to the holding member 3. Even when the pair of arms 21 return to the open state and protrude most from the holding member 3, the engaging portion 25 is positioned in the internal space 38 of the holding member 3.
- FIG. 46 is a diagram showing the clip unit 1 with the pair of arms 21 closed.
- the surgeon retracts the arrowhead hook 231 by retracting the slider 242 along the operation unit main body 241.
- the connecting member 4 connected to the arrowhead hook 231 pulls the clip 2.
- the pair of arms 21 having a self-expanding force are pulled toward the base end side A2, thereby pushing the distal opening 3a of the pressing member 3 toward the base end side A2.
- the protruding and retracting wings 31 in the protruding state are engaged with the sheath 220 and are therefore not retracted into the sheath 220. Therefore, the clip 2 pulled by the connecting member 4 is retracted into the pressing member 3.
- the pair of arms 21 are pulled into the holding member 3 and the pair of arms 21 gradually close.
- the clip 2 returns to the open state while moving toward the tip end A1, using the self-expanding force of the pair of arms 21 as a restoring force. The surgeon can return the pair of arms 21 to the open state to re-grasp the tissue.
- FIG. 47 is a diagram showing the clip unit 1 with the clip 2 locked.
- the engaging portion 25 is retracted toward the base end side A2 from the fastening member 32. Since the base end side A2 of the engaging portion 25 is formed as an obtuse-angled inclined surface, the engaging portion 25 is easily retracted toward the base end side from the fastening member 32.
- the tip side A1 of the engaging portion 25 is formed as an acute-angled inclined surface, when the engaging portion 25 is retracted toward the base end side A2 from the fastening member 32, the engaging portion 25 and the fastening member 32 engage with each other.
- FIG. 48 is a diagram showing the clip unit 1 from which the clip 2 has been separated. The surgeon further pulls the clip 2. A breaking force of, for example, 20 to 90 N (Newtons) is applied to the hook 41f, and the breaking portion 41b breaks. The breaking strength of the breaking portion 41b is lower than the breaking strength of the connecting portion body 43. Therefore, the breaking portion 41b breaks, not the connecting portion body 43.
- a breaking force of, for example, 20 to 90 N (Newtons) is applied to the hook 41f, and the breaking portion 41b breaks.
- the breaking strength of the breaking portion 41b is lower than the breaking strength of the connecting portion body 43. Therefore, the breaking portion 41b breaks, not the connecting portion body 43.
- the surgeon reloads a new clip unit 1 into the clip introduction device 200 using a cartridge or the like.
- the position of the clip unit 1 in the cartridge 5 is unlikely to shift, and the clip unit 1 can be easily loaded into the clip introduction device 200.
- 49 and 50 are diagrams showing modified examples of a pair of beam portions 69f.
- the second ends 69b of the pair of beams 69f may be disposed at positions that engage with the base ends of the connecting arms 44.
- the pressing portions 89 of the restricting member 7 that spread outward do not engage with the second ends 69b, as shown in Fig. 50. Therefore, the pressing portions 89 are easily spread outward in the height direction H.
- a second embodiment of the present invention will be described with reference to Figures 51 to 59.
- components common to those already described will be denoted by the same reference numerals, and duplicated description will be omitted.
- a cartridge system 100B according to the second embodiment is the same as the cartridge system 100 according to the first embodiment, except that it includes a connecting member 4B instead of the connecting member 4.
- FIG. 51 is a perspective view of the connecting member 4B.
- the connecting member 4B is detachably connected to the base end 28 of the clip 2.
- the connecting member 4B is also detachably connected to the arrowhead hook 231 that passes through the sheath 220. That is, the connecting member 4B connects the clip 2 to the arrowhead hook 231.
- the connecting member 4B includes a tip connecting portion 41 provided at the tip, a base end connecting portion 42B provided at the base end, and a rod-shaped portion 45 that connects the tip connecting portion 41 and the base end connecting portion 42.
- the base end connecting portion 42B is an engagement portion with which the arrowhead hook portion 231 of the clip introduction device 200 engages (connects).
- the base end connecting portion 42B has a connecting portion main body 43 and a connecting arm 44B.
- the connecting arm (a pair of legs) 44B is provided at the base end of the connecting body 43 and branches into two branches.
- the connecting arm 44B is elastically deformable in the vertical direction C relative to the connecting body 43 and can be opened and closed relative to the connecting body 43.
- the connecting arm 44B is formed with a notch 44m that grasps and stores the engagement portion 231a of the arrowhead hook 231.
- the connecting arm 44B can be connected to the arrowhead hook 231 of the clip introduction device 200 when in the open state, and can maintain its connection to the arrowhead hook 231 of the clip introduction device 200 when in the closed state.
- FIG. 52 is a perspective view of the connecting member 4B as viewed from the base end side A2.
- An insertion opening 44e is formed on the base end side A2 of the connecting arm 44B, into which the arrowhead hook 231 is inserted.
- a base end surface 44s is formed around the base end of the insertion opening 44e.
- FIG. 53 is a perspective view of the connecting member 4B in which the breaking portion 41b is broken.
- a radial length D2 (maximum possible length) perpendicular to the longitudinal direction A at the fracture surface 41s of the fracture portion 41b is greater than an inner diameter D1 of the insertion opening 44e.
- FIG. 54 and 55 are cross-sectional views showing a connecting member 4' in which the breaking portion 41b has broken and the tip side member has been separated.
- FIG. 56 is an enlarged view of the area surrounded by the dotted line in FIG. 55.
- the connecting member (also called residue) 4' from which the tip side member has been separated can be removed from the arrowhead hook 231 by the user.
- the user inserts the arrowhead hook 231 into a new cartridge 5 without removing the residue 4' and attempts to load a new clip unit 1 onto the arrowhead hook 231.
- the broken surface 41s of the breaking portion 41b abuts against the base end surface 44s.
- the force in the direction in which the connecting arm 44B is opened is reduced, and the residue 4' is prevented from being erroneously connected to the connecting arm 44B of the connecting member 4B of the new clip unit 1.
- 57 to 59 are cross-sectional views showing aspects of the base end surface 44s.
- the base end surface 44s is perpendicular to the longitudinal direction A as shown in Fig. 57.
- the base end surface 44s may be a surface that is inclined at an angle of about 10 to 20 degrees with respect to the longitudinal direction A as shown in Figs. 58 and 59.
- the cartridge system 100B of this embodiment when loading the clip unit 1 into the clip introduction device 200, the position of the clip unit 1 in the cartridge 5 is unlikely to shift, and the clip unit 1 can be easily loaded into the clip introduction device 200. According to the cartridge system 100B of this embodiment, the residue 4' is prevented from being erroneously connected to the connecting arm 44B of the connecting member 4B of the new clip unit 1.
- FIG. 60 and 61 are views showing modified examples of the base end opening 67.
- FIG. The compressing portion 65 (the first compressing portion 651 and the second compressing portion 652) of the case 6 may have a contact surface 67s that protrudes in the height direction H at the base end opening 67.
- the contact surface 67s comes into contact with the sheath 220, and the sheath 220 can be fixed to the case 6 more reliably.
- the present invention can be applied to cartridges that store clip units, etc.
- Clip introduction device (applicator) 220 sheath 221 distal tip 222 distal coil 224 proximal coil 230 operation wire (power transmission section) 231 Arrowhead hook (connection part) 232 Wire 240 Operation section 300 Clip device 400 Endoscope 410 Treatment tool insertion channel 1 Clip unit 2 Clip (clip arm) 21 Pair of arms 211 First arm 212 Second arm 22 Tissue gripping portion 23 Grip portion 24 Slide portion 25 Engagement portion 28 Base end portion 3 Pressing member (tubular member) 3A Holding tube (second tubular member) 3B Holding pipe (first tubular member) 30 Presser tube body 30a Outer peripheral surface 30r Engagement recess 31 Protruding and recessed wing 32 Fastening member 32a Inner peripheral surface 32t Tapered surface 35 Engagement recess 38 Internal space 4, 4B Connecting member 4' Remnant 41 Tip connecting portion 41b Fracture portion 41e Tip expansion portion 41f Hook 41w First protrusion 41g Second protrusion 41p Third protrusion 41q Fourth protru
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Abstract
Description
本発明の第一の態様に係るカートリッジシステムは、クリップと、アプリケータと連結可能な連結アームを有する連結部材と、を有するクリップユニットと、前記クリップユニットが長手方向に沿って移動可能な格納領域を有するケースと、を備え、前記ケースは、前記格納領域において前記連結アームの揺れを抑制する内壁を有する。
本発明の第一実施形態に係るカートリッジシステム100について、図1から図48を参照して説明する。カートリッジシステム100は、クリップユニット1と、クリップユニット1を収容するカートリッジ5と、を備える。カートリッジシステム100は、クリップ導入装置200にクリップユニット1を容易に装填するための支援システムである。
図1は、クリップ導入装置200の斜視図である。
クリップ導入装置(アプリケータ)200は、シース220と、操作ワイヤ230と、操作部240と、を備える。クリップ導入装置200は、例えば内視鏡400の処置具挿通チャンネル410に挿通され、内視鏡400と組み合わせて使用される(図14)。そのため、シース220は、内視鏡400の処置具挿通チャンネル410の長さよりも十分に長く形成されている。シース220は、可撓性を有しており、内視鏡400の挿入部の湾曲に合わせて湾曲する。
図2は、クリップユニット1の斜視図である。図3は、押さえ部材3を透過表示させたクリップユニット1の斜視図である。クリップユニット1は、クリップ2と、押さえ部材3と、連結部材4と、を備える。
押さえ部材(管状部材)3は、クリップ2の少なくとも一部を格納可能な円管状の部材である。押さえ部材3は、クリップ2が長手方向Aに進退する内部空間38を有する。押さえ部材3は、内部空間38に引き込んだクリップ2を閉じた状態に固定できる。押さえ部材3は、基端側A2に設けられた押さえ管3Aと、先端側A1に設けられた押さえパイプ3Bと、を有する。
押さえ管(第二管状部材)3Aは、筒状に形成された押さえ管本体30と、突没ウイング31と、締付部材32と、を有する。
押さえ管本体30の基端開口3dには、連結部材4の係合凸部43pと係合する係合凹部30rが形成されている。係合凹部35は、中心軸線O1を挟んで両側に設けられている。
締付部材32には、基端側A2において基端側A2から先端側A1に向かって内径が小さくなるテーパ面32tが形成されている。締付部材32にテーパ面32tが設けられているため、連結部材4を基端側A2から締付部材32に内部に挿入しやすい。
連結部材4は、クリップ2の基端部28に分離可能に連結される。また、連結部材4は、シース220内を挿通する矢尻フック231に分離可能に連結される。すなわち、連結部材4は、クリップ2と矢尻フック231とを連結する。連結部材4は、先端に設けられた先端連結部41と、基端に設けられた基端連結部42と、先端連結部41と基端連結部42と接続する棒状部45と、を備える。
破断部41bは、基端部28が基端側A2に牽引されることによってフック41fに対して例えば20N(ニュートン)から90Nの引っ張りによる破断力量が加えられたときに破断する。なお、破断部41bは、クリップ2の基端部28と連結部材4のフック41fとの連結を解除する機構を有していればよい。例えば、破断部41bは、破断することなく変形(塑性変形または弾性変形)することによって、基端部28とフック41fとの連結を解除する機構であってもよい。
一対のアーム21が開状態であるとき、図10に示すように、先端拡張部41eの先端は、クリップ2の係合部25よりも先端側A1に配置され、また、締付部材32よりも先端側A1に配置される。先端拡張部41eは、上下方向Cにおいて締付部材32の内周面32aと接触することができる。そのため、先端連結部41に連結されたクリップ2は、上下方向Cにおいて先端連結部41に対してガタツキにくい。
第二突起41gは、フック41fに設けられた左右方向Bに突出する部材である。第二突起41gは、第一突起41wの下側において上下方向Cに延びており、左右方向Bの両側に延びる一対の突起である。第二突起41gは、中心軸線O1に対して対称な形状を有する。
左右方向Bにおいて第一アーム211の係合部25と第二アーム212の係合部25との間の距離が小さくなるように一対のアーム21が変形する際に、第二突起41gは一対のアーム21と当てつく位置に配置される。具体的には、第二突起41gは、係合部25が締付部材32よりも先端側A1に配置され、かつ、係合部25が締付部材32に当てついた状態で係合部25よりも基端側A2に配置される。そのため、一対のアーム21を閉状態にロックするために必要な牽引力量が小さい力量とならず、適切な大きさの力量となる。その結果、操作者が意図せず一対のアーム21を閉状態にロックしてしまうことを抑制できる。
シース220に装填されたクリップユニット1は、湾曲する内視鏡400の処置具挿通チャンネル410を通過して処置位置に導入される。連結部材4は、左右方向Bの第一長さが、左右方向Bの第二長さよりも短い棒状部45を有しており、上下方向Cよりも左右方向Bに湾曲しやすい。シース220およびシース220に装填されたクリップユニット1を、クリップデバイス300ともいう。
図15は、クリップユニット1を格納したカートリッジ5の斜視図である。図16は、クリップユニット1を格納したカートリッジ5の断面図である。カートリッジ5は、ケース6と、規制部材7と、を有する。カートリッジ5の長手方向Lの長さは50mm程度、幅は10mmから20mm程度、厚さ(高さ)は5mm程度であり、手に持ち易い大きさに形成されている。
クリップユニット1は、ケース本体60の格納領域6Sの先端側に形成された先端開口60bから格納領域6Sに格納される。クリップユニット1は、連結部材4側からカートリッジ5に格納される。
係止部64は、第一領域61の先端側であって、高さ方向Hの一方側(上側)および他方側(下側)に形成されている。二つの係止部64は、中心軸線O2を含む水平面HPに対して対称に形成されている。なお、係止部64は、ケース本体60における第一領域61の一方側(上側)と他方側(下側)のいずれか一方のみに形成されていてもよい。
係止部64は、弾性変形部64aと、係止凸部64bと、を有する。弾性変形部64aは、平板状に形成されており、長手方向Lの先端側の端部64cのみがケース本体60に固定されている。弾性変形部64aは、ケース本体60に固定された端部64cを固定端とした片持ち梁として弾性変形する。
係止凸部64bは、弾性変形部64aにおける長手方向Lの基端側の端部64dに設けられている。係止凸部64bは、図20に示すように、外力が作用しない状態において、格納領域6Sの第一領域61側に突出している(初期状態)。係止凸部64bは、傾斜面64sと、係止面64tと、を有する。
格納領域6Sには、内壁69が形成されている。内壁(揺れ規制機構)69は、連結アーム44の振れを抑制する。内壁69は、連結アーム44の高さ方向Hの振れを抑制する第一内壁691と、連結アーム44の幅方向Wの振れを抑制する第二内壁692と、を有する。
第二内壁(左右揺れ規制機構)692は、幅方向Wを向く内壁であって、連結アーム44と係合することで、連結アーム44の幅方向Wの揺れを抑制する。幅方向Wの両側に設けられた一対の第二内壁692が、高さ方向Hに二つ配列して設けられている。
規制部材(スライダ)7は、クリップユニット1とともに、第一領域61および第二領域62に移動可能に格納される。規制部材7は、例えばケース6と同様の樹脂によって形成されている。規制部材7は、ケース6のように透明の樹脂で形成されていなくてもよい。規制部材7は、図23に示すように、規制部材7の長手方向Lにおける中心軸線O3を含む垂直面VPおよび水平面HPに対して対称な形状に形成されている。
中層部材70は、中心軸線O3をクリップユニット1の中心軸線O1に略一致させて、クリップ2に把持される。クリップユニット1は、図16に示すように、クリップ2が規制部材7を把持した状態で格納領域6Sに格納される。このとき、中心軸線O1と中心軸線O2と中心軸線O3とは一致していることが望ましい。
次に、カートリッジシステム100の作用について説明する。図26から図39は、カートリッジ5を用いてクリップユニット1をクリップ導入装置200に装填する方法を説明する図である。
次に、クリップユニット1をカートリッジ5に格納する方法について説明する。図40から図43は、クリップユニット1をカートリッジ5に格納する方法を説明する図である。
次に、図44から図48を参照して、クリップユニット1の動作および作用について説明する。
クリップユニット1は、カートリッジ5を使用してクリップ導入装置200に装填される。クリップ導入装置200に装填されたクリップユニット1の連結部材4は、シース220内を挿通する矢尻フック231に連結されている。突没ウイング31は、シース220の内周面により押し付けられて没状態となっている。
術者は、シース220に装填されたクリップユニット1を内視鏡のチャンネルを経由して体内に導入する。次に、術者は、スライダ242を操作部本体241に沿って前進させることで、矢尻フック231を前進させる。術者は、突没ウイング31がシース220から出るまで、クリップユニット1を前進させる。突没ウイング31は、シース220から出ることにより、没状態から基本姿勢である突状態に戻る。
術者は、スライダ242を操作部本体241に沿って後退させることで、矢尻フック231を後退させる。矢尻フック231に連結された連結部材4は、クリップ2を牽引する。自己拡開力を有する一対のアーム21は、基端側A2に牽引されることにより、押さえ部材3の先端開口3aを基端側A2に押す。突状態である突没ウイング31は、シース220と係合するため、シース220の内部に引き込まれない。そのため、連結部材4により牽引されたクリップ2は、押さえ部材3に引き込まれる。
基端部28が押さえ部材3の基端側A2にさらに牽引されることで、係合部25が締付部材32より基端側A2に引き込まれる。係合部25の基端側A2は鈍角な斜面に形成されているため、係合部25は締付部材32より基端側まで引き込みやすい。一方、係合部25の先端側A1は鋭角な斜面に形成されているため、係合部25が締付部材32より基端側A2まで引き込まれると、係合部25と締付部材32とが係合する。その結果、クリップ2は押さえ部材3に対する先端側A1への移動が規制され、一対のアーム21が閉状態にロックされる。一対のアーム21が閉状態にロックされると、一対のアーム21は開状態に戻ることはできない。
術者は、さらにクリップ2を牽引する。フック41fに対して例えば20N(ニュートン)から90Nの引っ張りによる破断力量が加えられ、破断部41bは破断する。破断部41bの破断強度は、連結部本体43の破断強度より低い。そのため、連結部本体43ではなく破断部41bが破断する。
ている。
図49および図50は、一対の梁部69fの変形例を示す図である。
一対の梁部69fの第二端69bは連結アーム44の基端と係合する位置に配置されていてもよい。第二端69bを基端側に配置することにより、図50に示すように、押し広がる規制部材7の押え部89が第二端69bと係合しない。そのため、押え部89は、高さ方向Hの外側に押し広げやすい。
本発明の第二実施形態について、図51から図59を参照して説明する。以降の説明において、既に説明したものと共通する構成については、同一の符号を付して重複する説明を省略する。第二実施形態に係るカートリッジシステム100Bは、連結部材4ではなく連結部材4Bを備えることを除いて、第一実施形態に係るカートリッジシステム100と同じである。
連結部材4Bは、クリップ2の基端部28に分離可能に連結される。また、連結部材4Bは、シース220内を挿通する矢尻フック231に分離可能に連結される。すなわち、連結部材4Bは、クリップ2と矢尻フック231とを連結する。連結部材4Bは、先端に設けられた先端連結部41と、基端に設けられた基端連結部42Bと、先端連結部41と基端連結部42と接続する棒状部45と、を備える。
連結アーム44Bの基端側A2には、矢尻フック231が挿入される挿入口44eが形成されている。挿入口44eの基端の周囲には基端面44sが形成されている。
破断部41bの破断面41sにおける長手方向Aに垂直な径方向の長さD2(取りうる最大長さ)は、挿入口44eの内径D1よりも大きい。
連結アーム44Bを開脚させる方向に対する力を好適に減少させるため、基端面44sは図57に示すように長手方向Aに対して垂直であることが望ましい。なお、基端面44sは、図58および図59に示すように、長手方向Aに対して10度から20度ほど傾斜する面であってもよい。
図60および図61は、基端開口67の変形例を示す図である。
ケース6の圧搾部65(第一圧搾部651と第二圧搾部652)は、基端開口67において、高さ方向Hに突出する接触面67sを有してもよい。使用者が圧搾部65でシース220を圧搾したとき、接触面67sがシース220に接触して、シース220をケース6に対してより確実に固定できる。
200 クリップ導入装置(アプリケータ)
220 シース
221 先端チップ
222 先端側コイル
224 手元側コイル
230 操作ワイヤ(動力伝達部)
231 矢尻フック(接続部)
232 ワイヤ
240 操作部
300 クリップデバイス
400 内視鏡
410 処置具挿通チャンネル
1 クリップユニット
2 クリップ(クリップアーム)
21 一対のアーム
211 第一アーム
212 第二アーム
22 組織把持部
23 把持部
24 摺動部
25 係合部
28 基端部
3 押さえ部材(管状部材)
3A 押さえ管(第二管状部材)
3B 押さえパイプ(第一管状部材)
30 押さえ管本体
30a 外周面
30r 係合凹部
31 突没ウイング
32 締付部材
32a 内周面
32t テーパ面
35 係合凹部
38 内部空間
4,4B 連結部材
4´ 残留物
41 先端連結部
41b 破断部
41e 先端拡張部
41f フック
41w 第一突起
41g 第二突起
41p 第三突起
41q 第四突起
41s 破断面
42,42B 基端連結部
43 連結部本体
43p 係合凸部
44,44B 連結アーム(一対のレッグ)
44e 挿入口
44m 切欠部
44s 基端面
45 棒状部
5 カートリッジ
6 ケース
6S 格納領域
60 ケース本体
60b 先端開口
61 第一領域
62 第二領域
62b 開口
63 畳み領域
63a 拡径部
63b テーパ部
63c 縮径部
64 係止部
65 圧搾部
651 第一圧搾部
652 第二圧搾部
66 シース接続部
67 基端開口
67s 接触面
68 シース挿入領域
68a シース当接部
69 内壁(揺れ規制機構)
691 第一内壁(上下揺れ規制機構)
69a 第一端(固定端)
69b 第二端(自由端)
69f 一対の梁部(フィンガー)
692 第二内壁(左右揺れ規制機構)
7 規制部材(スライダ)
70 中層部材
71 先端部
72 突出部
73 テーパ部
74 基端部
8 ガイド部材
A 長手方向
A1 先端側(遠位側)
A2 基端側(近位側)
B 左右方向(第二方向)
C 上下方向(第一方向)
L 長手方向
H 高さ方向
W 幅方向
Claims (16)
- クリップと、アプリケータと連結可能な連結アームを有する連結部材と、を有するクリップユニットと、
前記クリップユニットが長手方向に沿って移動可能な格納領域を有するケースと、
を備え、
前記ケースは、前記格納領域において前記連結アームの揺れを抑制する内壁を有する、
カートリッジシステム。 - 前記内壁は、前記長手方向と垂直な第一方向の両側に設けられた第一内壁を有し、
前記第一内壁は、前記第一方向における前記第一内壁の間の長さが第一長さとなる第一状態と、前記第一長さより長い第二長さとなる第二状態と、に遷移可能である、
請求項1に記載のカートリッジシステム。 - 前記第一内壁は、一対の梁部であり、
前記一対の梁部は、前記長手方向に延びる片持ち梁である、
請求項2に記載のカートリッジシステム。 - 前記第一内壁は、前記格納領域において収容された前記クリップユニットの前記連結部材と係合可能な位置に配置されている、
請求項2に記載のカートリッジシステム。 - 前記クリップユニットが前記格納領域において前記長手方向の先端に突き当たったとき、前記第一内壁と前記連結アームとの前記長手方向における位置は重なる、
請求項2に記載のカートリッジシステム。 - 前記連結アームは、開状態のときに前記アプリケータと連結可能で、閉状態のときに前記アプリケータとの連結を維持する、
請求項2に記載のカートリッジシステム。 - 前記第一方向において、
前記第一長さは、前記閉状態の前記連結アームの外幅よりも大きく、
前記第二長さは、前記開状態の前記連結アームの外幅よりも大きい、
請求項6に記載のカートリッジシステム。 - 前記内壁は、前記長手方向および前記第一方向に垂直な第二方向の両側に設けられた第二内壁を有する、
請求項2に記載のカートリッジシステム。 - クリップと、アプリケータと連結可能な連結アームを有する連結部材と、を有するクリップユニットを収容可能なカートリッジであって、
前記クリップユニットが長手方向に沿って移動可能な格納領域を有するケースと、
を備え、
前記ケースは、前記格納領域において前記連結アームの揺れを抑制する内壁を有する、
カートリッジ。 - 前記内壁は、前記長手方向と垂直な第一方向の両側に設けられた第一内壁を有し、
前記第一内壁は、前記第一方向における前記第一内壁の間の長さが第一長さとなる第一状態と、前記第一長さより長い第二長さとなる第二状態と、に遷移可能である、
請求項9に記載のカートリッジ。 - 前記第一内壁は、一対の梁部であり、
前記一対の梁部は、前記長手方向に延びる片持ち梁である、
請求項10に記載のカートリッジ。 - 前記第一内壁は、前記格納領域において収容された前記クリップユニットの前記連結部材と係合可能な位置に配置されている、
請求項10に記載のカートリッジ。 - 前記クリップユニットが前記格納領域において前記長手方向の先端に突き当たったとき、前記第一内壁と前記連結アームとの前記長手方向における位置は重なる、
請求項10に記載のカートリッジ。 - 前記連結アームは、開状態のときに前記アプリケータと連結可能で、閉状態のときに前記アプリケータとの連結を維持する、
請求項10に記載のカートリッジ。 - 前記第一方向において、
前記第一長さは、前記閉状態の前記連結アームの外幅よりも大きく、
前記第二長さは、前記開状態の前記連結アームの外幅よりも大きい、
請求項14に記載のカートリッジ。 - 前記内壁は、前記長手方向および前記第一方向に垂直な第二方向の両側に設けられた第二内壁を有する、
請求項10に記載のカートリッジ。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112024000373.7T DE112024000373T5 (de) | 2023-01-17 | 2024-01-17 | Kartuschensystem und Kartusche |
| JP2024571774A JPWO2024154745A1 (ja) | 2023-01-17 | 2024-01-17 | |
| CN202480007572.4A CN120513058A (zh) | 2023-01-17 | 2024-01-17 | 盒系统及盒 |
| US19/264,777 US20250331834A1 (en) | 2023-01-17 | 2025-07-09 | Cartridge system and cartridge |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202363480206P | 2023-01-17 | 2023-01-17 | |
| US63/480,206 | 2023-01-17 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19/264,777 Continuation US20250331834A1 (en) | 2023-01-17 | 2025-07-09 | Cartridge system and cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024154745A1 true WO2024154745A1 (ja) | 2024-07-25 |
Family
ID=91956191
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2024/001046 Ceased WO2024154745A1 (ja) | 2023-01-17 | 2024-01-17 | カートリッジシステムおよびカートリッジ |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250331834A1 (ja) |
| JP (1) | JPWO2024154745A1 (ja) |
| CN (1) | CN120513058A (ja) |
| DE (1) | DE112024000373T5 (ja) |
| WO (1) | WO2024154745A1 (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062019A1 (ja) * | 2004-12-07 | 2006-06-15 | Olympus Corporation | 内視鏡用処置具システム、および、処置具が内包されたカートリッジ |
| JP2017217206A (ja) * | 2016-06-07 | 2017-12-14 | 野村ユニソン株式会社 | クリップユニット用カートリッジ及びクリップユニット係合方法 |
| WO2022137412A1 (ja) * | 2020-12-24 | 2022-06-30 | オリンパスメディカルシステムズ株式会社 | カートリッジシステム、カートリッジおよびクリップユニットの装填方法 |
| JP2022102473A (ja) * | 2020-12-25 | 2022-07-07 | 株式会社カネカ | クリップカートリッジ |
-
2024
- 2024-01-17 DE DE112024000373.7T patent/DE112024000373T5/de active Pending
- 2024-01-17 CN CN202480007572.4A patent/CN120513058A/zh active Pending
- 2024-01-17 JP JP2024571774A patent/JPWO2024154745A1/ja active Pending
- 2024-01-17 WO PCT/JP2024/001046 patent/WO2024154745A1/ja not_active Ceased
-
2025
- 2025-07-09 US US19/264,777 patent/US20250331834A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062019A1 (ja) * | 2004-12-07 | 2006-06-15 | Olympus Corporation | 内視鏡用処置具システム、および、処置具が内包されたカートリッジ |
| JP2017217206A (ja) * | 2016-06-07 | 2017-12-14 | 野村ユニソン株式会社 | クリップユニット用カートリッジ及びクリップユニット係合方法 |
| WO2022137412A1 (ja) * | 2020-12-24 | 2022-06-30 | オリンパスメディカルシステムズ株式会社 | カートリッジシステム、カートリッジおよびクリップユニットの装填方法 |
| JP2022102473A (ja) * | 2020-12-25 | 2022-07-07 | 株式会社カネカ | クリップカートリッジ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2024154745A1 (ja) | 2024-07-25 |
| CN120513058A (zh) | 2025-08-19 |
| US20250331834A1 (en) | 2025-10-30 |
| DE112024000373T5 (de) | 2025-10-09 |
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