Cartridge system

Abstract

This cartridge system comprises: a clip unit that has arms, which can be opened / closed in an opening / closing direction, and can be connected to an applicator; and a case that accommodates the clip unit and has an opening at an end surface. The opening has: a first insertion passage through which the applicator can be inserted in the insertion / removal direction; and a second insertion passage that partially overlaps the first insertion passage and through which the arms can be inserted in the insertion / removal direction.

Description

Cartridge System

[0001] The present invention relates to a cartridge system that houses a clip unit for an endoscope.

[0002] In endoscopic treatment, a clip unit is used that can ligate the excision site after treatment to stop bleeding, etc. The clip unit includes a clip that clamps the excision site, etc., and a pressure tube that houses the clip and locks it in a closed state. The clip unit is introduced to the treatment site by an applicator (introduction device) that can be inserted through the channel of the endoscope.

[0003] Patent Literature 1 describes a cartridge system for storing clip units. A user can use the cartridge system to load the clip unit into an applicator. When loading the clip unit into the applicator, the clip unit passes through an insertion passage formed in the cartridge and is pulled out of the cartridge.

[0004] Chinese Patent Application Publication No. 112790812

[0005] However, in a conventional cartridge system such as that disclosed in Patent Document 1, resistance occurs when the clip unit is pulled out of the cartridge.

[0006] In view of the above circumstances, an object of the present invention is to provide a cartridge system that provides little resistance when a clip unit is pulled out of the cartridge.

[0007] In order to solve the above problems, the present invention proposes the following means: A cartridge system according to a first aspect of the present invention comprises a clip unit having an arm that can be opened and closed in an opening and closing direction and that can be connected to an applicator, and a case that houses the clip unit and has an opening on an end face, the opening having a first insertion passage through which the applicator can be inserted in an insertion / removal direction, and a second insertion passage that partially overlaps with the first insertion passage and through which the arm can be inserted in the insertion / removal direction.

[0008] In the cartridge system of the present invention, when the clip unit is pulled out from the cartridge, resistance is small, and the clip unit loaded in the applicator can be easily used.

[0009] It is a perspective view showing a cartridge system. It is a perspective view showing a clip introduction device. It is a perspective view showing a clip unit. It is a perspective view showing the same clip unit with the pressing member shown in a transparent state. It is a cross-sectional view in the longitudinal direction of the pressing member. It is a perspective view of the pressing tube. It is a perspective view of the pressing tube as seen from the proximal end side. It is a perspective view of the connecting member. It is a front view showing the cartridge. It is a side view showing the same cartridge. It is an enlarged view of the range indicated by the broken line D11 of the same cartridge shown in FIG. 1. In the enlarged view of the same cartridge shown in FIG. 11, it shows the state where the clip unit is removed. It is a cross-sectional view along the line F13 - F13 of the same cartridge shown in FIG. 9. It is a cross-sectional view along the line F14 - F14 of the same cartridge shown in FIG. 9. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge. It is a cross-sectional view along the line F21 - F21 of the same cartridge shown in FIG. 20. It is a diagram showing the clip unit introduced into the body. It is a diagram showing the clip unit with a pair of arms closed. It is a diagram showing the clip unit with the clip locked. It is a diagram showing the clip unit 1 with the clip separated. It is a front view showing the cartridge system according to the second embodiment. It is a side view showing the same cartridge system. It is a side view showing the cartridge system according to the second embodiment. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge. It is a diagram for explaining a method of loading the clip unit into the clip introduction device using the same cartridge.10 is a front view showing a cartridge system according to a third embodiment. FIG. 11 is a side view showing the cartridge system. FIG. 12 is a side view showing the cartridge system. FIG. 13 is a view explaining a method of loading a clip unit into a clip introducer using a cartridge according to the third embodiment. FIG. 14 is a view explaining a method of loading the clip unit into the clip introducer using the cartridge. FIG. 15 is a view explaining a method of loading the clip unit into the clip introducer using the cartridge. FIG. 16 is a side view showing a support member according to a first modified example. FIG. 17 is a front view showing a cartridge system according to a fourth embodiment. FIG. 18 is a view explaining a method of loading a clip unit into a clip introducer using a cartridge according to the fourth embodiment. FIG. 19 is a view explaining a method of loading the clip unit into the clip introducer using the cartridge. FIG. 19 is a view explaining a method of loading the clip unit into the clip introducer using the cartridge. FIG. 19 is a side view showing a cartridge system according to a second modified example. FIG. 19 is a view explaining a method of loading a clip unit into a clip introducer using a cartridge according to the second modified example. FIG. 19 is a view explaining a method of loading the clip unit into the clip introducer using the cartridge. FIG. 19 is a view explaining a method of loading the clip unit into the clip introducer using the cartridge. FIG. 49 is a side view showing the cartridge system. FIG. 49 is a cross-sectional view along the F50-F50 line of the cartridge system shown in FIG. 48. FIG. 49 is a view explaining a method of loading a clip unit into the clip introducer device using the cartridge according to a fifth embodiment. FIG. 50 is a view explaining a method of loading the clip unit into the clip introducer device using the cartridge. FIG. 51 is a view explaining a method of loading the clip unit into the clip introducer device using the cartridge. FIG. 52 is a cross-sectional view showing a modified example of the first support member. FIG. 53 is a front view showing a cartridge system according to a sixth embodiment.10 is a diagram illustrating a method for loading a clip unit into a clip introducer using a cartridge according to a sixth embodiment. FIG. 11 is a diagram illustrating a method for loading the clip unit into the clip introducer using the cartridge. FIG. 12 is a diagram illustrating a method for loading the clip unit into the clip introducer using the cartridge. FIG. 13 is a diagram illustrating a method for loading the clip unit into the clip introducer using the cartridge. FIG. 14 is a diagram illustrating a transition of a support member according to a sixth embodiment from a first state to a second state. FIG. 15 is a diagram illustrating a transition of the support member from the first state to the second state. FIG. 16 is a diagram illustrating a transition of the support member from the first state to the second state. FIG. 17 is a diagram illustrating a transition of the support member from the first state to the second state. FIG. 18 is a front view of a cartridge system according to a seventh embodiment. FIG. 19 is a side view of the cartridge system. FIG. 19 is a diagram illustrating a method for loading a clip unit into a clip introducer using a cartridge according to a seventh embodiment. FIG. 19 is a diagram illustrating a method for loading the clip unit into the clip introducer using the cartridge. FIG. 19 is a diagram illustrating a method for loading the clip unit into the clip introducer using the cartridge.

[0010] Hereinafter, a cartridge system according to an embodiment will be described with reference to the drawings. In the following description, components having the same or similar functions will be denoted by the same reference numerals. Duplicate descriptions of those components may be omitted.

[0011] First Embodiment A cartridge system 100 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 25. FIG.

[0012] Fig. 1 is a perspective view showing a cartridge system 100. As shown in Fig. 1, the cartridge system 100 has a clip unit 1 and a cartridge (case) 5 that can accommodate the clip unit 1. The cartridge system 100 is a support system for easily loading the clip unit 1 into a clip introduction device (applicator) 200.

[0013] [Clip Introducing Device 200] Fig. 2 is a perspective view showing the clip introducing device 200. As shown in Fig. 2, the clip introducing device (applicator) 200 includes a sheath 220, an operating wire 230, and an operating section 240. The clip introducing device 200 is inserted, for example, into a treatment tool insertion channel of an endoscope and used in combination with the endoscope (not shown). For this reason, the sheath 220 is formed to be sufficiently longer than the length of the treatment tool insertion channel of the endoscope. The sheath 220 is flexible and bends in accordance with the curvature of the insertion section of the endoscope.

[0014] 2, the sheath 220 is formed in an elongated tubular shape as a whole and includes a distal tip 221, a distal coil 222, and a proximal coil 224. 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.

[0015] As shown in FIG. 2, the operating wire (power transmission unit) 230 includes an arrowhead hook (connection unit) 231 connected to the clip unit 1 and a wire 232 for operating the arrowhead hook 231 .

[0016] 2, the arrowhead hook 231 includes a substantially conical engaging portion 231a that engages with the clip unit 1, and a wire connecting portion 231b provided at the base end of the engaging portion 231a. The arrowhead hook 231 is formed of a metal material such as stainless steel.

[0017] The wire 232 is inserted so as to be able to move forward and backward relative to the sheath 220. The distal end of the wire 232 is fixed to the proximal end of the wire connecting portion 231b by, for example, welding.

[0018] 2, the operation unit 240 includes an operation unit main body 241, a slider 242, and a thumb ring 248. The operation unit main body 241, the slider 242, and the thumb ring 248 are injection molded from, for example, a resin material. The operation unit main 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.

[0019] The slider 242 is attached to the operation portion main body 241 so as to be movable forward and backward in the longitudinal axis direction, and has the base end of the wire 232 attached thereto. When the slider 242 moves forward and backward along the operation portion main body 241, the wire 232 moves forward and backward relative to the sheath 220, and the arrowhead hook 231 moves forward and backward.

[0020] The thumb ring 248 is attached to the base end of the operation portion body 241 so as to be rotatable around the longitudinal axis of the operation portion body 241 .

[0021] [Clip unit 1] Fig. 3 is a perspective view showing the clip unit 1. Fig. 4 is a perspective view showing the clip unit 1, with the pressing member 3 being transparently displayed. As shown in Fig. 3, the clip unit 1 includes a clip 2, a pressing member (holder) 3, and a connecting member 4.

[0022] In the following description, 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. Furthermore, the direction perpendicular to the longitudinal direction A is referred to as the "second direction B" or "left-right direction B." Furthermore, 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."

[0023] The clip (clip arm) 2 is formed by bending a metal plate at its center. As shown in Figure 3, 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.

[0024] 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 disposed on either side of a central axis O1 in the longitudinal direction A of the clip unit 1. The clip 2 may include three or more arms. The pair of arms 21 can transition between an open state P1 and a closed state P2.

[0025] 4, the first arm 211 has, from the distal end side A1 to the proximal end side A2, a tissue gripping portion 22, a flat plate-shaped gripping portion 23, a sliding portion 24, and an engaging portion 25. The tissue gripping portion 22 is formed by bending the distal end of the first arm 211 inward. The sliding portion 24 is a portion that elastically deforms when the pair of arms 21 are retracted into the presser member 3.

[0026] As shown in FIG. 4, the second arm 212 has, from the distal end side A1 to the proximal end side A2, a tissue gripping portion 22, a flat plate-shaped gripping portion 23, a sliding portion 24, and an engaging portion 25.

[0027] The engaging portion 25 is a member that can engage with a clamping member 32 of the pressing member 3, which will be described later. 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.

[0028] 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 provided so as to be able to open and close toward the tip side A1. The base end 28 is bent into a U-shape and is connected to a hook 41f of the connecting member 4. The base end 28 is biased so that the pair of arms 21 are in the open state P1. Therefore, the pair of arms 21 of the clip 2 have a self-expanding force in the opening and closing direction P.

[0029] 4, the base end portion 28 and a hook 41f of the connecting member 4, which will be described later, are connected by inserting the hook 41f of the connecting member 4 into the U-shaped base end portion 28. When the base end portion 28 is connected to the connecting member 4, the opening / closing direction P of the pair of arms 21 substantially coincides with the left-right direction B.

[0030] 5 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 retracted into the internal space 38 in a closed state. As shown in FIG. 5, 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.

[0031] 6 is a perspective view of the pressure tube 3A. As shown in FIG. 6, the pressure tube (second tubular member) 3A has a pressure tube main body 30 formed in a cylindrical shape, wings 31, and a tightening member 32.

[0032] The holding tube body 30 is formed by injection molding a material softer than the clip 2, such as a thermoplastic resin having appropriate elasticity, such as PPA (polyphthalamide), PA (polyamide), PEEK (polyether ether ketone), or LCP (liquid crystal polymer). The holding tube body 30 may also be formed from a metal instead of a thermoplastic resin.

[0033] 7 is a perspective view of the pressing tube 3A as seen from the base end side A2. An engaging recess 30r that engages with an engaging protrusion 43p of the connecting member 4 (described later) is formed in the base end opening 3d of the pressing tube main body 30. The engaging recess 30r is provided on both sides of the central axis O1.

[0034] The wings 31 are a pair of protrusions that protrude from the outer circumferential surface 30a of the pressing tube main body 30. The wings 31 are provided on both sides of the central axis O1.

[0035] The clamping member 32 is a ring-shaped member provided in the internal space 38 of the presser tube 3A. The clamping member 32 is made of metal. Note that the clamping member 32 only needs to be formed to be harder than the presser tube main body 30, and may be formed of, for example, a thermoplastic resin instead of metal.

[0036] The pressure pipe (first tubular member) 3B is a cylindrical member made of metal. The pressure pipe 3B is press-fitted into the tip of the pressure pipe 3A. The pressure pipe 3A and the pressure pipe 3B may be connected by heat welding, adhesive bonding, or screw fastening.

[0037] 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. In other words, the connecting member 4 connects the clip 2 and the arrowhead hook 231. As shown in FIG. 8 , 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.

[0038] 8, the tip connecting portion 41 has a hook 41f at its tip, a breaking portion 41b provided on the base end side A2 of the hook 41f, and a tip expanding portion 41e. The tip connecting portion 41 can be inserted through the internal space 38 of the pressing member 3 when connected to the clip 2.

[0039] The hook 41f is a hook that extends in the vertical direction C perpendicular to the central axis O1 and is formed in a generally cylindrical rod shape. The hook 41f 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.

[0040] The breaking portion 41b breaks when a breaking force is applied to the hook 41f by pulling the base end 28 toward the base end side A2. 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. For example, 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.

[0041] The proximal end connecting portion 42 is an engaging portion that is engaged (connected) with the arrowhead hook 231 of the clip introduction device 200. The proximal end connecting portion 42 has a connecting portion main body 43 and a connecting arm 44, as shown in FIG.

[0042] The connecting portion main body 43 is provided at the base end of the rod-shaped portion 45. The connecting portion main body 43 is formed with an engaging protrusion 43p that protrudes in the vertical direction C. The engaging protrusion 43p engages with an engaging recess 30r provided in the base end opening 3d of the pressing member 3, thereby restricting relative rotation between the pressing member 3 and the connecting member 4 in the circumferential direction with respect to the longitudinal direction A.

[0043] 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 up-down direction C relative to the connecting body 43 and can open and close 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 peripheral 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 in the open state P1 and can maintain its connection to the arrowhead hook 231 of the clip introduction device 200 in the closed state P2.

[0044] 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 distal end connecting portion 41 and the proximal end connecting portion 42, and connects the distal end connecting portion 41 and the proximal end connecting portion 42. The rod-shaped portion 45 can be inserted through the internal space 38 of the pressing member 3.

[0045] [Cartridge 5] Fig. 9 is a front view showing the cartridge 5. Fig. 10 is a side view showing the cartridge 5. Fig. 11 is an enlarged view of the range indicated by dashed line D11 of the cartridge 5 shown in Fig. 1. Fig. 12 shows the enlarged view of the cartridge 5 shown in Fig. 11 with the clip unit 1 removed. Fig. 13 is a cross-sectional view of the cartridge 5 shown in Fig. 9 taken along line F13-F13. Fig. 14 is a cross-sectional view of the cartridge 5 shown in Fig. 9 taken along line F14-F14.

[0046] 9, the cartridge 5 is a case that stores the clip unit 1. The cartridge 5 is about 40 mm wide, about 70 to 80 mm long, and about 5 mm thick, making it easy to hold in your hand.

[0047] The cartridge 5 is manufactured by injection molding from a transparent resin material that has an appropriate hardness, such as ABS, PC, PP, PS, acrylic, cycloolefin polymer, etc. The cartridge 5 is formed using a transparent resin material, making it easy for the user to determine whether or not the clip unit 1 is present inside.

[0048] As shown in Figure 9, of the two directions perpendicular to the longitudinal direction (insertion / removal direction) L of the cartridge 5 and perpendicular to each other, one is referred to as the "width direction (opening / closing direction) W" and the other as the "height direction H." Furthermore, a plane parallel to the longitudinal direction L and the width direction W is referred to as the "horizontal plane HP." A plane parallel to the longitudinal direction L and the height direction H is referred to as the "vertical plane VP." Furthermore, in the cartridge 5 storing the clip unit 1, the side of the pair of arms 21 is referred to as the tip side L1 of the cartridge 5, and the side of the connecting member 4 is referred to as the base side L2 of the cartridge 5.

[0049] As shown in FIG. 9, the cartridge 5 has a cartridge body (case body) 70 formed in a substantially rectangular box shape, and a storage area 7S formed inside the cartridge body 70.

[0050] The cartridge body 70 is formed with a storage area 7S in which the clip unit 1 is stored so as to be movable in the longitudinal direction (advance / retract direction) L. As shown in Fig. 9 , the storage area 7S has a first area 71, a second area 72, a third area 73, and a sheath insertion area 74. The first area 71, the second area 72, and the third area 73 are arranged in this order from the distal end in the longitudinal direction L of the cartridge 5.

[0051] The cartridge body 70 is formed with an insertion passage (opening) 67 through which the sheath 220 can be inserted. The insertion passage 67 has an opening surface formed substantially perpendicular to the longitudinal direction L. The insertion passage 67 is formed on an end surface 70a of the base end side L2 of the cartridge body 70. The insertion passage 67 communicates with the storage region 7S. The clip unit 1 is housed in the cartridge body 70 with its base end side facing the insertion passage 67. The clip unit 1 is housed in the cartridge body 70 in an open state P1. Note that the state in which the clip unit 1 is housed in the cartridge body 70 is not limited. The clip unit 1 may be housed, for example, in a partially closed state.

[0052] The insertion passage 67 forms a first insertion passage 67a and a second insertion passage 67b. The first insertion passage 67a is formed so that the sheath 220 can be inserted therethrough. The second insertion passage 67b is formed so that the arm 21 in the open state P1 can be inserted therethrough. The second insertion passage 67b partially overlaps with the first insertion passage 67a. The shape of the second insertion passage 67b is not limited. For example, the second insertion passage 67b may be formed so that the arm 21 in the partially closed state can be inserted therethrough.

[0053] The first insertion passage 67a is formed in a substantially circular shape when viewed in the longitudinal direction L. The outer diameter R3 of the first insertion passage 67a is larger than the outer diameter R2 of the sheath 220 (see FIG. 14). That is, the length T3 of the first insertion passage 67a in the width direction W is larger than the outer diameter R1 of the wire 232 (see FIG. 14). The length S3 of the first insertion passage 67a in the height direction H is larger than the outer diameter R1 of the wire 232 (see FIG. 14).

[0054] The second insertion passage 67b has a slit shape when viewed from the longitudinal direction L. A length T4 in the width direction W of the second insertion passage 67b is greater than the length T1 in the width direction W of the arm 21 in the open state P1 (see FIG. 21). A length S4 in the height direction H of the second insertion passage 67b is greater than the length S1 in the height direction H of the arm 21 (see FIG. 21). The shape of the second insertion passage 67b is not limited, and the length T4 in the width direction W of the second insertion passage 67b may, for example, be smaller than the length T1 in the width direction W of the arm 21 in the open state P1.

[0055] The first area 71 is an area where the tip of the arm 21 is located when the arm 21 is stored in the storage area 7S. The first area 71 is formed on the tip side of the storage area 7S. The first area 71 is in communication with the second area 72.

[0056] The second region 72 is disposed closer to the base end than the first region 71. In the width direction W, a width T5 of the first region 71 is larger than a width T6 of the second region 72 (see FIG. 9). The second region 72 is provided with a first stopper 70e.

[0057] The first stopper 70e restricts movement of the arm 21 toward the base end in the longitudinal direction L. When the arm 21 is stored in the storage region 7S, the first stopper 70e is disposed closer to the base end than the tip of the arm 21. The first stopper 70e is a member extending from the inner wall of the second region 72 toward the stored arm 21. Specifically, the first stopper 70e is a member extending from the inner wall of the second region 72 in the width direction W. Two first stoppers 70e are provided, spaced apart in the width direction W. The length between the pair of first stoppers 70e in the width direction W is the width of the second region 72.

[0058] When a force equal to or greater than a predetermined magnitude is applied toward the base end of the arm 21, the movement of which is restricted by the first stopper 70e, the restriction is released, and the arm 21 can pass through the second region 72 in the longitudinal direction L without being completely closed.

[0059] The third region 73 is a region in which the base end of the arm 21 is located when the arm 21 is stored in the storage region 7S. The third region 73 is located closer to the base end than the second region 72. The third region 73 is connected to the second region 72. In the width direction W, the width T7 of the third region 73 is larger than the width T2 of the second region 72 (see FIG. 9 ).

[0060] The storage area 7S is provided with a second stopper 70f and a third stopper 70g. The second stopper 70f restricts the holding member 3 from moving toward the tip in the longitudinal direction L. The third stopper 70g restricts the holding member 3 from moving in the width direction W and the height direction H.

[0061] The sheath insertion region 74 is a region into which the distal end portion of the sheath 220 is inserted after passing through the insertion passage 67. The sheath insertion region 74 is located on the proximal end side L2 of the third region 73 and communicates with the third region 73.

[0062] The second stopper 70f is disposed closer to the tip than the pressing member 3 when the arm 21 is stored in the storage area 7S. The second stopper 70f is a protrusion extending in the height direction H from the inner wall of the storage area 7S. In this embodiment, two second stoppers 70f are provided spaced apart in the height direction H. The shape of the second stoppers 70f is not limited. For example, they may be columnar members connecting the inner wall of the storage area 7S in the height direction H.

[0063] The third stopper 70g is disposed at a position where the pressing member 3 is stored when the arm 21 is stored in the storage area 7S. The third stopper 70g is disposed on the distal side of the second stopper 70f. The third stopper 70g is a recess formed to allow the pressing member 3 to move in the longitudinal direction. The third stopper 70g sandwiches the pressing member 3 in the width direction W and the height direction H.

[0064] The cross section of the tip end portion 70s of the cartridge body 70 is formed so that the arm 21 in the open state P1 can be inserted therethrough, as shown in Fig. 13. The cross section of the base end portion 70r of the cartridge body 70 is formed so that the arm 21 in the open state P1 and the wire 232 can be inserted therethrough, as shown in Fig. 14.

[0065] [Method of Loading Clip Unit 1] Next, the operation of the cartridge system 100 will be described with reference to Figures 15 to 21. Figures 15 to 20 are views illustrating a method of loading the clip unit 1 into the clip introducer device 200 using the cartridge 5. Figure 21 is a cross-sectional view taken along line F21-F21 of the cartridge 5 shown in Figure 20.

[0066] The user inserts the sheath 220 into the sheath insertion region 74 through the insertion passage 67 .

[0067] 15 is a diagram showing the clip unit 1 connected to the clip introduction device 200. The user advances the sheath 220 toward the distal end of the cartridge 5. At this time, the user, for example, holds the cartridge 5 with one hand while moving the sheath 220 with the other hand. The user further advances the sheath 220, bringing the arrowhead hook 231 into contact with the connecting member 4.

[0068] 16 is a diagram showing the clip unit 1 connected to the clip introduction device 200. The user further advances the sheath 220 to connect the engaging portion 231a of the arrowhead hook 231 with the connecting arm 44 of the connecting member 4. At this time, the tip of the arm 21 is disposed in the first region 71, and the arm 21 is in the open state P1.

[0069] FIG. 17 shows how the clip unit 1 is being pulled out of the cartridge 5. The user retracts the sheath 220 toward the proximal end of the cartridge 5. At this time, the user, for example, holds the cartridge 5 with one hand while moving the sheath 220 with the other hand. The sheath 220 pulls the clip unit 1 toward the proximal end. At this time, the proximal ends of the wings 31 abut against the distal ends of the sheath 220. When the clip unit 1 connected to the clip introduction device 200 is moved toward the proximal end of the cartridge 5, the distal ends 21a of the arms 21 are positioned in the second region 72. When the arms 21 move to the second region 72, the arms 21 receive a force from the first stopper 70e in the width direction W in a direction that closes the arms 21. Receiving the force in the closing direction, the arms 21 move in the closing direction while being moved toward the proximal end. At this time, the arms 21 do not close completely. Therefore, the resistance that the arms 21 receive is small, making it easy for the user to move the sheath 220.

[0070] 18 is a diagram showing the state in which the clip unit 1 is pulled out of the cartridge 5. The user further retracts the sheath 220 toward the base end of the cartridge 5. When the arm 21 is further retracted, the tip 21 a of the arm 21 is positioned in the third region 73. In the third region 73, the tip 21 a of the arm 21 receives almost no force in the width direction W. Therefore, the arm 21 returns to the open state P1.

[0071] 19 is a diagram showing how the clip unit 1 is pulled out of the cartridge 5. The user further retracts the sheath 220 toward the proximal end of the cartridge 5. The arm 21 moves toward the proximal end through the third region 73. At this time, the arm 21 receives almost no force in the width direction W, and therefore the resistance received by the arm 21 is small, making it easy for the user to move the sheath 220.

[0072] 20 is a diagram showing how the clip unit 1 is pulled out of the cartridge 5. The user moves the sheath 220 further toward the base end of the cartridge 5. When the tip 21a of the arm 21 moves to the base end of the cartridge 5, the tip 21a of the arm 21 passes through the insertion passage 67. At this time, as shown in FIG. 21, the arm 21 can pass through the insertion passage 67 without coming into contact with the tip end of the cartridge 5. Therefore, the resistance that the arm 21 experiences is small, and the user can easily move the sheath 220.

[0073] After the user pulls out the clip unit 1 from the cartridge 5, the user retracts the slider 242 relative to the operation unit body 241 of the operation unit 240, thereby retracting the operation wire 230 relative to the sheath 220. In this embodiment, the arm 21 is pulled out from the cartridge 5 in the open state P1. Note that the state of the arm 21 when pulled out from the cartridge 5 is not limited. For example, the clip unit 1 may be pulled out from the cartridge 5 with the arm 21 in the closed state P2. When the clip unit 1 is pulled out from the cartridge 5, the loading of the clip unit 1 into the clip introduction device 200 is completed.

[0074] [Operation and Function of Clip Unit 1] Next, the operation and function of the clip unit 1 will be described with reference to FIGS. 22 to 25. FIG.

[0075] The clip unit 1 is loaded into the clip introducer 200 using a cartridge 5. The connecting member 4 of the clip unit 1 loaded into the clip introducer 200 is connected to the arrowhead hook 231. The wings 31 are disposed at the tip of the sheath 220.

[0076] In the loaded clip unit 1, the engaging portion 25 is located on the distal side A1 of the fastening member 32.

[0077] 22 is a diagram showing the clip unit 1 introduced into the body. The user introduces the clip unit 1 loaded into the sheath 220 into the body via the channel of the endoscope. Next, the user advances the slider 242 along the operation portion main body 241, thereby advancing the arrowhead hook 231.

[0078] When the distal ends of the pair of arms 21 come out of the sheath 220, the self-expanding force of the pair of arms 21 serves as a restoring force, and the clip 2 returns to the open state P1 while moving toward the distal end relative to the pressing member 3. Even when the pair of arms 21 return to the open state P1 and protrude most from the pressing member 3, the engaging portion 25 is disposed in the internal space 38 of the pressing member 3.

[0079] 23 is a diagram showing the clip unit 1 with the pair of arms 21 closed. The user retracts the arrowhead hook 231 by retracting the slider 242 along the operating unit body 241. The connecting member 4 connected to the arrowhead hook 231 pulls the clip 2. The pair of arms 21, which have 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 wings 31 engage 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.

[0080] When the connecting member 4 pulls the base end 28 of the clip 2 toward the base end side A2 of the presser member 3, the pair of arms 21 are pulled into the presser member 3 and gradually close. When the pulling force on the base end 28 is released in this state, the clip 2 returns to the open state P1 while moving toward the tip end side A1, using the self-expanding force of the pair of arms 21 as a restoring force. The user can return the pair of arms 21 to the open state P1 to re-grasp the tissue.

[0081] 24 is a diagram showing the clip unit 1 in which the clip 2 is locked. When the proximal end 28 is further pulled toward the proximal side A2 of the presser member 3, the engaging portion 25 is retracted toward the proximal side A2 from the fastening member 32. Because the proximal side A2 of the engaging portion 25 is formed as an obtuse-angled slope, the engaging portion 25 is easily retracted toward the proximal side from the fastening member 32. On the other hand, because the distal side A1 of the engaging portion 25 is formed as an acute-angled slope, when the engaging portion 25 is retracted toward the proximal side A2 from the fastening member 32, the engaging portion 25 engages with the fastening member 32. As a result, movement of the clip 2 toward the distal side A1 relative to the presser member 3 is restricted, and the pair of arms 21 are locked in the closed state P2. Once the pair of arms 21 are locked in the closed state P2, they cannot return to the open state P1.

[0082] 25 is a diagram showing the clip unit 1 from which the clip 2 has been separated. The user further pulls the clip 2. A breaking force is applied to the hook 41f by pulling, and the breaking portion 41b breaks. The breaking strength of the breaking portion 41b is lower than the breaking strength of the connecting portion main body 43. Therefore, the breaking portion 41b breaks, not the connecting portion main body 43.

[0083] The user uses the cartridge 5 to reload a new clip unit 1 into the clip introducer device 200 .

[0084] According to the cartridge system 100 of this embodiment, since it has the first stopper 70e, it is possible to restrict movement of the clip unit 1 stored in the cartridge 5 in the longitudinal direction L, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0085] According to the cartridge system 100 of this embodiment, since it has the second stopper 70f, it is possible to restrict movement of the clip unit 1 stored in the cartridge 5 in the longitudinal direction L, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0086] According to the cartridge system 100 of this embodiment, since it has the third stopper 70g, it is possible to restrict movement of the clip unit 1 stored in the cartridge 5 in the width direction W and the height direction H, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0087] According to the cartridge system 100 of this embodiment, the first insertion passage 67a and the second insertion passage 67b are formed, so that the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0088] Although the first embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the present invention. Furthermore, the components shown in the above embodiment and the following modified examples can be appropriately combined to form a configuration.

[0089] Second Embodiment [Cartridge System 100B] A cartridge system 100B according to a second embodiment of the present invention will be described with reference to Figures 26 to 31. The cartridge system 100B according to the second embodiment differs from the cartridge system 100 of the first embodiment in the configuration of the cartridge, etc. In the following description, configurations that are common to those already described will be assigned the same reference numerals, and duplicated description will be omitted.

[0090] Fig. 26 is a front view showing cartridge system 100B. Fig. 27 is a side view showing cartridge system 100B. Fig. 28 is a side view showing cartridge system 100B. Cartridge system 100B has a clip unit 1 and a cartridge 5B that can accommodate the clip unit 1. Like cartridge system 100, cartridge system 100B is a support system for easily loading the clip unit 1 into a clip introduction device 200.

[0091] [Cartridge 5B] Like the cartridge 5, the cartridge 5B is a case capable of storing the clip unit 1. As shown in Fig. 27 , the cartridge 5B has a cartridge main body 70B formed in a substantially rectangular box shape and a storage area 7S formed inside the cartridge main body 70B.

[0092] The cartridge body 70B is formed with an insertion passage 67 into which the sheath 220 can be inserted, similar to the cartridge body 70. The insertion passage 67 has a first insertion passage 67a formed to allow the sheath 220 to be inserted therethrough, and a second insertion passage 67b formed to allow the arm 21 in the open state P1 to be inserted therethrough. The second insertion passage 67b partially overlaps with the first insertion passage 67a.

[0093] [Support member 8] The cartridge system 100B has a support member 8. The support member 8 is a member that is housed in the cartridge 5 and is capable of supporting the clip unit 1 stored in the cartridge 5. The support member 8 is capable of restricting movement of the clip unit 1 in the longitudinal direction L. The support member 8 is capable of restricting movement of the clip unit 1 in the width direction W. The support member 8 is capable of restricting movement of the clip unit 1 in the height direction H.

[0094] The support member 8 can transition between a first state Pb1 and a second state Pb2. The first state Pb1 is a state in which the support member 8 can support the clip unit 1 with the base end side of the clip unit 1 facing the insertion passage 67. The second state Pb2 is a state in which the support member 8 releases the clip unit 1.

[0095] The support member 8 has a first support member 81 and a second support member 82. The first support member 81 is a member that can restrict movement of the clip unit 1 stored in the cartridge 5. The second support member 82 is a member that can restrict movement of the clip unit 1 stored in the cartridge 5 in the longitudinal direction L.

[0096] The first support member 81 is a member having a clamping portion 83 capable of supporting the clip unit 1 stored in the cartridge 5. Two first support members 81 are provided spaced apart in the width direction W. In the first state Pb1, the first support members 81 support the clip unit 1 by clamping the clip unit 1 from the width direction W.

[0097] The pair of first support members 81 are members that are movable in the width direction W. When the pair of first support members 81 receive a force in a direction that moves them away from each other, they move in the direction that moves them away from each other in the width direction W. In other words, the pair of first support members 81 are movable in a direction that moves them away from the arm 21. By moving in a direction that moves them away from the arm 21, the first support members 81 transition from the first state Pb1 to the second state Pb2.

[0098] A push-in portion 84 is formed on the tip side of the first support member 81. The push-in portion 84 is a portion that receives force from the second support member 82. A push-in portion 84 is formed on each tip side of the pair of arms 21. The pair of push-in portions 84 receive force from the second support member 82 in directions that move them away from each other. When the pair of push-in portions 84 receive force in directions that move them away from each other, the pair of first support members 81 move in directions that move them away from each other, and the first support members 81 transition from the first state Pb1 to the second state Pb2.

[0099] The first support member 81 may have an engaging portion (not shown) that can engage with the pressing member 3. The engaging portion is, for example, a member that can engage with the base end side of the pressing member 3. By having the engaging portion, the first support member 81 can restrict the clip unit 1 from moving toward the base end side of the cartridge 5 when the clip unit 1 is housed in the cartridge 5. By restricting the clip unit 1 from moving toward the base end side of the cartridge 5, it is possible to prevent the clip unit 1 from unintentionally jumping out of the cartridge 5.

[0100] The pair of pushing portions 84 are inclined portions that are inclined in a direction toward each other from the base end side to the tip end side, so that when a force is applied to the pair of pushing portions 84 from the base end side to the tip end side, the pair of pushing portions 84 move in a direction away from each other.

[0101] The clamping portions 83 are members that can support the clip unit 1 by clamping it. The clamping portions 83 are formed on the base end side of the first support member 81. The clamping portions 83 are formed on the base end sides of the pair of first support members 81, respectively. In the first state Pb1, the pair of clamping portions 83 support the clip unit 1 by clamping the pressing member 3 from the width direction W.

[0102] In the first state Pb1, the clamping portion 83 restricts movement of the clip unit 1. Therefore, even if the cartridge 5 vibrates during transportation or the like, movement of the clip unit 1 within the cartridge is restricted, and the clip unit 1 is maintained in a position that allows it to be loaded into the clip introduction device 200.

[0103] When the support member 8 is in the first state Pb1, the width of the clamping portion 83 in the width direction W is smaller than the length of the arm 21 in the open state P1. When the support member 8 is in the second state Pb2, the width of the clamping portion 83 in the width direction W is larger than the length of the arm 21 in the open state P1. Therefore, in the second state Pb2, the arm 21 in the open state P1 can pass between the pair of clamping portions 83.

[0104] The second support member 82 is a member that can restrict movement of the clip unit 1 stored in the cartridge 5 in the longitudinal direction L. The second support member 82 is a member that restricts movement of the clip unit 1 toward the tip side by supporting the pressing member 3. The second support member 82 has a second support member main body 85 and a locking portion 86.

[0105] The second support member body 85 is a member that is movable in the longitudinal direction L. The second support member body 85 is disposed closer to the base end than the push-in portion 84 of the first support member 81. The tip of the second support member body 85 abuts against the push-in portion 84, thereby restricting movement of the second support member body 85 toward the tip end. In this embodiment, the second support member body 85 has a slope formed at its tip, and is formed into a substantially triangular shape when viewed from the height direction H.

[0106] The locking portion 86 is a rod-shaped member extending from the base end side of the second support member main body 85 in the longitudinal direction L. The base end of the locking portion 86 abuts against the tip end of the pressing member 3, thereby restricting movement of the pressing member 3 toward the tip end side.

[0107] [Operation of Cartridge System 100B] Next, the operation of the cartridge system 100B will be described with reference to Figures 29 to 31.

[0108] 29 to 31 are diagrams illustrating a method for loading the clip unit 1 into the clip introducer 200 using the cartridge 5B.

[0109] 29 is a diagram showing the clip unit 1 connected to the clip introducer device 200. The user inserts the sheath 220 through the insertion passage 67 and advances the sheath 220 toward the distal end of the cartridge 5B to connect the clip unit 1 to the clip introducer device 200. At this time, the arm 21 is in the open state P1. At this time, the pressing member 3 abuts against the locking portion 86 of the second support member 82, allowing the clip unit 1 to be stably connected to the clip insertion device 200. At this time, the user, for example, holds the cartridge 5B with one hand while moving the sheath 220 with the other hand.

[0110] 30 is a diagram showing the state in which the support member 8 has transitioned to the second state Pb2. With the clip unit 1 connected to the clip introduction device 200, the user further pushes the sheath 220 toward the distal end of the cartridge 5B, thereby moving the second support member 82 toward the distal end via the locking portion 86. As the second support member 82 moves toward the distal end, a force acts on the pair of pushing portions 84 in a direction that moves them away from each other, and the pair of first support members 81 move in a direction that moves them away from each other. At this time, the support member 8 transitions from the first state Pb1 to the second state Pb2 in conjunction with the movement of the clip introduction device 200.

[0111] 31 is a diagram showing how the clip unit 1 is being pulled out from the cartridge 5B. After the support member 8 transitions to the second state Pb2, the user can pull out the clip unit 1 from the cartridge 5B by retracting the sheath 220 toward the base end of the cartridge 5. At this time, because the support member 8 is in the second state Pb2, the arm 21 in the open state P1 can pass between the pair of clamping portions 83. Because the width of the clamping portions 83 in the width direction W is greater than the widthwise length of the arm 21 in the open state P1, the resistance experienced by the arm 21 is small, and the user can easily move the sheath 220.

[0112] According to the cartridge system 100B of this embodiment, since it has the support member 8, it is possible to restrict the movement of the clip unit 1 stored in the cartridge 5B, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0113] Although the second embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the present invention. Furthermore, the components shown in the above embodiment and the modified examples shown below can be configured by appropriately combining them.

[0114] (Third Embodiment) [Cartridge System 100C] A cartridge system 100C according to a third embodiment of the present invention will be described with reference to Figures 32 to 38. The cartridge system 100C according to the third embodiment differs from the cartridge system 100 of the first embodiment in the configuration of the cartridge, etc. In the following description, configurations that are common to those already described will be assigned the same reference numerals, and duplicate description will be omitted.

[0115] Figure 32 is a front view showing cartridge system 100C. Figure 33 is a side view showing cartridge system 100C. Figure 34 is a side view showing cartridge system 100C. Cartridge system 100C has a clip unit 1 and a cartridge 5C that can accommodate the clip unit 1. Like cartridge system 100, cartridge system 100C is a support system for easily loading the clip unit 1 into a clip introduction device 200.

[0116] [Cartridge 5C] Like the cartridge 5, the cartridge 5C is a case capable of storing the clip unit 1. As shown in Fig. 32 , the cartridge 5C has a cartridge main body 70C formed in a substantially rectangular box shape and a storage area 7S formed inside the cartridge main body 70C.

[0117] The cartridge body 70C is formed with an insertion passage 67 into which the sheath 220 can be inserted, similar to the cartridge body 70. The insertion passage 67 has a first insertion passage 67a formed to allow the sheath 220 to be inserted therethrough, and a second insertion passage 67b formed to allow the arm 21 in the open state P1 to be inserted therethrough. The second insertion passage 67b partially overlaps with the first insertion passage 67a.

[0118] [Support Member 8C] The cartridge system 100C has a support member 8C. Similar to the support member 8, the support member 8C is a member that can restrict movement of the clip unit 1 by supporting the clip unit 1. Similar to the support member 8, the support member 8C can transition between a first state Pb1 and a second state Pb2.

[0119] The support member 8C has a first support member 81C and a second support member 82C. The first support member 81C is a member that can restrict movement of the clip unit 1 stored in the cartridge 5C, similar to the first support member 81. The second support member 82C is a member that can restrict movement in the longitudinal direction L of the clip unit 1 stored in the cartridge 5C.

[0120] Similar to the first support member 81, two first support members 81C are provided spaced apart in the width direction W. Similar to the first support member 81, the first support member 81C has a clamping portion 83 that can support the clip unit 1 by clamping it.

[0121] The first support member 81C has a push-in portion 84C with a different shape from the push-in portion 84. The push-in portion 84C is formed at the tip of each of the pair of first support members 81C. The pair of push-in portions 84C are inclined portions that slope away from each other from the base end side to the tip end side. The push-in portion 84C is formed at a position that overlaps with the arm 21 when viewed from the width direction W, and is a member that is pushed in by the arm 21.

[0122] Like the first support member 81, the first support member 81C is movable in a direction away from the arm 21. The cartridge 5C of this embodiment is stored, for example, packaged in a sterilization pack and is removed from the sterilization pack before use. Therefore, the movement of the first support member 81C is restricted by the sterilization pack. Because the movement of the first support member 81C is restricted, even if the cartridge 5 vibrates during transportation, etc., the movement of the clip unit 1 within the cartridge is restricted, and the clip unit 1 is maintained in a position that allows it to be loaded into the clip introduction device 200.

[0123] Similar to the second support member 82, the second support member 82C has a second support member main body 85 and a locking portion 86 extending from the second support member main body 85 toward the base end side. The locking portion 86 is a member against which the pressing member 3 abuts, thereby restricting the clip unit 1 from moving toward the tip end side.

[0124] Unlike the second support member 82, the second support member 82C is positioned further distal than the push-in portion 84 of the first support member 81C. The distal end of the second support member main body 85 abuts against the distal end of the cartridge body 70C, thereby restricting the movement of the second support member 82C toward the distal end. In this embodiment, the second support member main body 85 has a slope formed at its base end and is formed into a substantially triangular shape when viewed from the height direction H.

[0125] The second support member 82C may be formed integrally with the cartridge body 70C, or may be provided as a separate body from the cartridge body 70C. When the second support member 82C is formed integrally with the cartridge body 70C, for example, the second support member 82C is a convex portion extending in the height direction H from the inner surface of the cartridge body 70C.

[0126] [Operation of Cartridge System 100C] Next, the operation of the cartridge system 100C will be described with reference to Figures 35 to 37.

[0127] 35 to 37 are diagrams illustrating a method for loading the clip unit 1 into the clip introducer 200 using the cartridge 5C.

[0128] 35 is a diagram showing the clip unit 1 connected to the clip introducer device 200. The user inserts the sheath 220 through the insertion passage 67 and advances the sheath 220 toward the distal end of the cartridge 5C to connect the clip unit 1 to the clip introducer device 200. At this time, the arm 21 is in the open state P1. At this time, the pressing member 3 abuts against the locking portion 86 of the second support member 82C, so the clip unit 1 can be stably connected to the clip insertion device 200. At this time, the user, for example, holds the cartridge 5C with one hand while moving the sheath 220 with the other hand.

[0129] 36 is a diagram showing the state in which the support member 8C has transitioned to the second state Pb2. After the clip unit 1 is connected to the clip introduction device 200, the user retracts the clip unit 1 connected to the sheath 220 toward the proximal end of the cartridge 5C. As the clip unit 1 moves toward the proximal end, the arm 21 moves the first support member 81C in a direction away from the arm 21. At this time, the support member 8C transitions from the first state Pb1 to the second state Pb2.

[0130] 37 is a diagram showing the clip unit 1 being pulled out from the cartridge 5C. After the support member 8C transitions to the second state Pb2, the user can pull out the clip unit 1 from the cartridge 5C by retracting the sheath 220 toward the base end side of the cartridge 5. At this time, because the support member 8C is in the second state Pb2, the arm 21 in the open state P1 can pass between the pair of clamping portions 83. Therefore, the resistance experienced by the arm 21 is small, and the user can easily move the sheath 220.

[0131] According to the cartridge system 100C of this embodiment, since it has the support member 8C, it is possible to restrict the movement of the clip unit 1 stored in the cartridge 5C, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0132] (Modification 1) [Supporting Member 8D] Next, a supporting member 8D of Modification 1 will be described with reference to FIG.

[0133] Fig. 38 is a side view showing a support member 8D, which is a modified example of the support member 8C. The support member 8D is a modified example of the support member 8C. As shown in Fig. 38, the support member 8D differs from the first support member 81C in the configuration of a first support member 81D.

[0134] In the support member 8D, a first support member 81D is rotatably supported relative to the cartridge body 70C. The first support member 81D and the cartridge body 70C are connected by a rotation shaft 87. The rotation shaft 87 is a member whose axial direction is the height direction H. The rotation shaft 87 is connected to the tip end of the first support member 81D. When the first support member 81D rotates around the rotation shaft 87, the support member 8D transitions from the first state Pb1 to the second state Pb2.

[0135] When the clip unit 1 is pulled out of the cartridge 5, the first support member 81D receives a force from the arm 21 in a direction away from the arm 21, and rotates around the rotation axis 87. Therefore, the resistance received by the arm 21 is small, and the user can easily move the sheath 220.

[0136] Although the third embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the present invention. Furthermore, the components shown in the above embodiment and the modified examples shown below can be configured by appropriately combining them.

[0137] (Fourth Embodiment) [Cartridge System 100E] A cartridge system 100E according to a fourth embodiment of the present invention will be described with reference to Figures 39 to 47. The cartridge system 100E according to the fourth embodiment differs from the cartridge system 100 of the first embodiment in the configuration of the cartridge, etc. In the following description, configurations that are common to those already described will be assigned the same reference numerals, and duplicate description will be omitted.

[0138] 39 is a front view showing a cartridge system 100E. The cartridge system 100E has a clip unit 1 and a cartridge 5E that can accommodate the clip unit 1. Like the cartridge system 100, the cartridge system 100E is a support system for easily loading the clip unit 1 into a clip introduction device 200.

[0139] [Cartridge 5E] Like the cartridge 5, the cartridge 5E is a case capable of storing the clip unit 1. As shown in Fig. 39 , the cartridge 5E has a cartridge main body 70E formed in a substantially rectangular box shape and a storage area 7S formed inside the cartridge main body 70E.

[0140] The cartridge body 70E has an insertion passage 67E formed therein, into which the sheath 220 can be inserted. The insertion passage 67E is formed so that the sheath 220 can be inserted. In this embodiment, the insertion passage 67E is formed in a substantially circular shape, and the outer diameter of the insertion passage 67E is larger than the outer diameter of the sheath 220.

[0141] Unlike the cartridge body 70, the cartridge body 70E is formed to be separable. In this embodiment, the cartridge body 70E is formed to be separable in the width direction W, and a breaking portion 70c extending in the longitudinal direction L is formed in the cartridge body 70E. The cartridge body 70E has a separation inducement portion 70d that can apply force to the breaking portion 70c. In this embodiment, the separation inducement portion 70d is formed to sandwich the breaking portion 70c from the width direction W and is an inclined portion that slopes toward the breaking portion 70c. The inclined portion formed in the separation inducement portion 70d is inclined in a direction away from the breaking portion 70c in the width direction W as it progresses toward the base end in the longitudinal direction L. In the separation inducement portion 70d, the inclined portion continues to the breaking portion 70c, and applying a force to the tip side of the separation inducement portion 70d applies a force to the breaking portion 70c in a direction that separates the breaking portion 70c.

[0142] [Support Member 8E] The cartridge system 100E includes a support member 8E. The support member 8E is a member that can restrict movement of the clip unit 1 housed in the cartridge 5E.

[0143] The support member 8E can transition between a first state Pb1 and a second state Pb2. When the cartridge main body 70E is separated, the support member 8E transitions from the first state Pb1 to the second state Pb2.

[0144] The support member 8E has a first support member 81E and a second support member 82E. The first support member 81E is a member that can restrict movement of the clip unit 1 stored in the cartridge 5E when in the first state Pb1. The second support member 82E is a member that restricts movement of the tip side of the clip unit 1 stored in the cartridge 5E in the longitudinal direction L when in the first state Pb1.

[0145] The first support member 81E is a member that can restrict movement of the clip unit 1 in the width direction W and height direction H by clamping the pressing member 3. Two first support members 81E are provided spaced apart in the width direction W. The pair of first support members 81E is a member that extends in the height direction H. The pair of first support members 81E supports the clip unit 1 by clamping the clip unit 1 from the width direction W. The shape of the first support member 81E is not limited. The first support member 81E may be a recess formed at the position where the pressing member 3 is disposed, like the third stopper 70g, for example.

[0146] The second support member 82E is a member that can restrict movement of the clip unit 1 stored in the cartridge 5 in the longitudinal direction L. The second support member 82E is a member that restricts movement of the clip unit 1 toward the tip side by supporting the pressing member 3. The second support member 82E has a second support member main body 85E, a locking portion 86E, and a pushing portion 84E.

[0147] The second support member main body 85E is a member that is movable in the longitudinal direction L. The second support member main body 85E is provided on the tip side of the first support member 81E.

[0148] The locking portion 86E is a member extending from the base end side of the second support member main body 85E in the longitudinal direction L. The base end of the locking portion 86E abuts against the tip end of the pressing member 3, thereby restricting movement of the pressing member 3 toward the tip end side.

[0149] The pushing portion 84E is a member that can be pushed into the separation inducing portion 70d. The pushing portion 84E is formed at the tip of the second support member 82E. The pushing portion 84E has a slope that becomes sharper as it progresses toward the tip. In this embodiment, the pushing portion 84E is formed in a substantially triangular shape when viewed from the height direction H.

[0150] [Operation of Cartridge System 100E] Next, the operation of the cartridge system 100E will be described with reference to Figures 40 to 42.

[0151] 40 to 42 are diagrams illustrating a method for loading the clip unit 1 into the clip introducer 200 using the cartridge 5E.

[0152] 40 shows the clip unit 1 connected to the clip introducer device 200. The user inserts the sheath 220 through the insertion passage 67E and advances the sheath 220 toward the distal end of the cartridge 5E to connect the clip unit 1 to the clip introducer device 200. At this time, the arm 21 is in the open state P1. At this time, the pressing member 3 abuts against the locking portion 86E of the second support member 82E, so the clip unit 1 can be stably connected to the clip insertion device 200. At this time, the user, for example, holds the cartridge 5E with one hand while moving the sheath 220 with the other hand.

[0153] 41 is a diagram showing the state in which the support member 8E has transitioned to the second state Pb2. With the clip unit 1 connected to the clip introduction device 200, the user further pushes the sheath 220 toward the distal end of the cartridge 5E, thereby moving the second support member 82E toward the distal end via the locking portion 86E. As the second support member 82E moves toward the distal end, the pushing portion 84E applies force to the separation inducing portion 70d, causing the cartridge body 70E to separate. At this time, the support member 8E transitions from the first state Pb1 to the second state Pb2.

[0154] 42 is a diagram showing the clip unit 1 being pulled out from the cartridge 5E. After the support member 8E transitions to the second state Pb2, the user can pull out the clip unit 1 from the cartridge 5E by retracting the sheath 220 toward the base end side of the cartridge 5E. At this time, the resistance experienced by the arm 21 is small, and the user can easily move the sheath 220.

[0155] According to the cartridge system 100E of this embodiment, since it has the support member 8E, it is possible to restrict the movement of the clip unit 1 stored in the cartridge 5E, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0156] (Modification 2) [Cartridge System 100F] Next, a cartridge system 100F according to modification 2 will be described with reference to Figures 43 to 47. Cartridge system 100F is a modification of cartridge system 100E.

[0157] 43 is a side view showing cartridge system 100F, which is a modified example of cartridge system 100E. Cartridge system 100F has a clip unit 1 and a cartridge 5F that can accommodate clip unit 1. Like cartridge system 100E, cartridge system 100F is a support system for easily loading clip unit 1 into clip introducer device 200.

[0158] The cartridge 5F is a case capable of storing the clip unit 1, similar to the cartridge 5. As shown in Fig. 43 , the cartridge 5F has a cartridge main body 70F formed in a substantially rectangular box shape and a storage area 7S formed inside the cartridge main body 70F.

[0159] The cartridge body 70F is formed with an insertion passage 67F into which the sheath 220 can be inserted. The insertion passage 67F is formed so that the sheath 220 can be inserted. In this embodiment, the insertion passage 67F is formed in a substantially circular shape, and the outer diameter of the insertion passage 67F is larger than the outer diameter of the sheath 220.

[0160] The cartridge body 70F, like the cartridge body 70E, is formed to be separable. In this embodiment, the cartridge body 70F is formed to be separable in the width direction W, and a breaking portion 70c extending in the longitudinal direction L is formed in the cartridge body 70F. The cartridge body 70F has a separation inducement portion 70Fd that can apply force to the breaking portion 70c. In this embodiment, the separation inducement portion 70d is formed to sandwich the breaking portion 70c from the width direction W and is an inclined portion that slopes toward the breaking portion 70c. The inclined portion formed in the separation inducement portion 70d is inclined in a direction away from the breaking portion 70c in the width direction W as it progresses toward the tip end in the longitudinal direction L. In the separation inducement portion 70d, the inclined portion continues to the breaking portion 70c, and applying a force to the base end side of the separation inducement portion 70d applies a force to the breaking portion 70c in a direction that separates the breaking portion 70c.

[0161] The cartridge main body 70F is provided with a pushing member 84F. The pushing member 84F is a member that can be pushed into the separation inducing portion 70Fd. The pushing member 84F is provided at the tip of the cartridge main body 70F. The pushing portion 84E has a slope that becomes sharper as it progresses toward the base end. In this embodiment, the pushing portion 84E is formed in a substantially triangular shape when viewed from the height direction H.

[0162] [Support Member 8F] The cartridge system 100F has a support member 8F. The support member 8F is a member that can restrict movement of the clip unit 1 stored in the cartridge 5F.

[0163] The support member 8F can transition between a first state Pb1 and a second state Pb2. When the cartridge main body 70F is separated, the support member 8F transitions from the first state Pb1 to the second state Pb2.

[0164] The support member 8F has a first support member 81E and a second support member 82F. The first support member 81E is a member that can restrict movement of the clip unit 1 stored in the cartridge 5F in the first state Pb1. The second support member 82F is a member that restricts movement of the tip side of the clip unit 1 stored in the cartridge 5F in the longitudinal direction L in the first state Pb1.

[0165] The second support member 82F is formed integrally with the cartridge body 70F. The second support member 82F is a convex portion extending from the inner surface of the cartridge body 70F in the height direction H. The second support member 82F is formed to be separable along the breaking portion 70c.

[0166] Figure 47 is a side view showing a modified example of the second support member 82F. As shown in Figure 47, the second support member 82F may be provided as a separate member from the cartridge main body 70F.

[0167] The second support member 82F does not have a push-in portion 84E, unlike the second support member 82E. The second support member 82F has a second support member main body 85E and a locking portion 86E, similar to the second support member 82E.

[0168] [Operation of Cartridge System 100F] Next, the operation of the cartridge system 100F will be described with reference to Figures 44 to 46.

[0169] 44 to 46 are diagrams illustrating a method for loading the clip unit 1 into the clip introducer 200 using the cartridge 5F.

[0170] 44 shows the clip unit 1 connected to the clip introducer device 200. The user inserts the sheath 220 through the insertion passage 67F and advances the sheath 220 toward the distal end of the cartridge 5F to connect the clip unit 1 to the clip introducer device 200. At this time, the arm 21 is in the open state P1. At this time, the pressing member 3 abuts against the locking portion 86E of the second support member 82F, allowing the clip unit 1 to be stably connected to the clip insertion device 200. At this time, the user, for example, holds the cartridge 5F with one hand while moving the sheath 220 with the other hand.

[0171] 45 is a diagram showing the state in which the support member 8F has transitioned to the second state Pb2. With the clip unit 1 connected to the clip introduction device 200, the user pushes the pushing portion 84E toward the proximal end. At this time, the pushing portion 84E applies force to the separation inducing portion 70d, causing the cartridge body 70E to separate. When the cartridge body 70E separates, the first support member 81E separates along the breaking portion 70c. At this time, the support member 8F transitions from the first state Pb1 to the second state Pb2.

[0172] 46 is a diagram showing the clip unit 1 being pulled out from the cartridge 5F. After the support member 8F transitions to the second state Pb2, the user can pull out the clip unit 1 from the cartridge 5F by retracting the sheath 220 toward the base end side of the cartridge 5F. At this time, the resistance received by the arm 21 is small, and the user can easily move the sheath 220.

[0173] Although the fourth embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the present invention. Furthermore, the components shown in the above embodiment and the modified examples shown below can be configured by appropriately combining them.

[0174] Fifth Embodiment [Cartridge System 100G] A cartridge system 100G according to a fifth embodiment of the present invention will be described with reference to Figures 48 to 55. The cartridge system 100G according to the fifth embodiment differs from the cartridge system 100 of the first embodiment in the configuration of the cartridge, etc. In the following description, configurations that are common to those already described will be assigned the same reference numerals, and duplicate description will be omitted.

[0175] Figure 48 is a front view showing cartridge system 100G. Figure 49 is a side view showing cartridge system 100G. Figure 50 is a cross-sectional view of cartridge system 100G shown in Figure 48 taken along line F50-F50. Cartridge system 100G has a clip unit 1 and a cartridge 5G capable of accommodating clip unit 1. Like cartridge system 100, cartridge system 100G is a support system for easily loading clip unit 1 into clip introducer device 200.

[0176] [Cartridge 5G] Similar to the cartridge 5, the cartridge 5G is a case capable of storing the clip unit 1. As shown in Fig. 48 , the cartridge 5G has a cartridge main body 70G formed in a substantially rectangular box shape and a storage area 7S formed inside the cartridge main body 70G.

[0177] The cartridge body 70G is formed with an insertion passage 67 into which the sheath 220 can be inserted, similar to the cartridge body 70. The insertion passage 67 has a first insertion passage 67a formed to allow the sheath 220 to be inserted therethrough, and a second insertion passage 67b formed to allow the arm 21 in the open state P1 to be inserted therethrough. The second insertion passage 67b partially overlaps with the first insertion passage 67a.

[0178] [Support Member 8G] The cartridge system 100G has a support member 8G. The support member 8G is a member that can restrict movement of the clip unit 1 stored in the cartridge 5G. The support member 8G can transition between a first state Pb1 and a second state Pb2.

[0179] The support member 8G has a first support member 81G and a second support member 82. The first support member 81G is a member that can restrict movement of the clip unit 1 stored in the cartridge 5G in the first state Pb1. The second support member 82 is a member that restricts movement of the tip side of the clip unit 1 stored in the cartridge 5G in the longitudinal direction L in the first state Pb1. The second support member 82 has a second support member main body 85 and a locking portion 86.

[0180] The first support member 81G is a member that can restrict movement of the clip unit 1 in the width direction W and height direction H by clamping the pressing member 3. Two first support members 81G are provided, spaced apart in the height direction H. Each of the pair of first support members 81E has a clamping portion 83 that can clamp the pressing member 3. The pair of first support members 81E supports the clip unit 1 by clamping the clip unit 1 from the height direction H with the pair of clamping portions 83.

[0181] The first support member 81G is formed to be rotatable relative to the cartridge body 70G. The first support member 81G and the cartridge body 70G are connected by a rotation shaft 87G. The rotation shaft 87G is a member whose axial direction is the width direction W. The rotation shaft 87G is connected to the tip end of the first support member 81G. In other words, the first support member 81G is a cantilever beam. When the first support member 81G rotates around the rotation shaft 87G, the support member 81G transitions from a first state Pb1 to a second state Pb2.

[0182] Figure 55 is a cross-sectional view showing a modified example of a first support member 81G. The shape of the first support member 81 is not limited. For example, as shown in Figure 55, the first support member 81G may be an elastically deformable member formed integrally with the cartridge main body 70G. When the first support member 81G is an elastically deformable member, the first support member 81G is a cantilever beam. When the first support member 81G is an elastically deformable member, the pair of first support members 81G elastically deform in directions away from each other, causing the support member 81G to transition from the first state Pb1 to the second state Pb2.

[0183] The second support member 82G may be formed integrally with the cartridge body 70G, or may be provided as a separate body from the cartridge body 70G. When the second support member 82G is formed integrally with the cartridge body 70G, for example, the second support member 82G is a convex portion extending in the height direction H from the inner surface of the cartridge body 70G.

[0184] [Operation of Cartridge System 100G] Next, the operation of the cartridge system 100G will be described with reference to Figures 51 to 54.

[0185] 51 to 54 are diagrams illustrating a method for loading the clip unit 1 into the clip introducer device 200 using the cartridge 5G.

[0186] Figure 51 shows the clip unit 1 connected to the clip introducer device 200. Figure 52 is a cross-sectional view of the cartridge 5G shown in Figure 51 taken along line F52-F52. The user inserts the sheath 220 through the insertion passage 67 and advances the sheath 220 toward the distal end of the cartridge 5G to connect the clip unit 1 to the clip introducer device 200. At this time, the arm 21 is in the open state P1. At this time, the pressing member 3 abuts against the locking portion 86G of the second support member 82G, allowing the clip unit 1 to be stably connected to the clip inserter device 200. At this time, the user, for example, holds the cartridge 5G with one hand while moving the sheath 220 with the other hand.

[0187] Figure 53 is a diagram showing the state in which the support member 8G has transitioned to the second state Pb2. Figure 54 is a cross-sectional view of the cartridge 5G shown in Figure 53 taken along line F54-F54. After the clip unit 1 is connected to the clip introduction device 200, the user retracts the clip unit 1 connected to the sheath 220 toward the proximal end of the cartridge 5G. As the clip unit 1 moves toward the proximal end, the arm 21 rotates the first support member 81G in a direction away from the arm 21. At this time, the support member 8G transitions from the first state Pb1 to the second state Pb2.

[0188] After the support member 8G transitions to the second state Pb2, the user can pull out the clip unit 1 from the cartridge 5G by further retracting the sheath 220 toward the base end side of the cartridge 5G. At this time, because the support member 8G is in the second state Pb2, the arm 21 in the open state P1 can pass between the pair of clamping portions 83. Therefore, the resistance experienced by the arm 21 is small, and the user can easily move the sheath 220.

[0189] According to the cartridge system 100G of this embodiment, since it has the support member 8G, it is possible to restrict the movement of the clip unit 1 stored in the cartridge 5G, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0190] Although the fifth embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the present invention. Furthermore, the components shown in the above embodiment and the modified examples shown below can be configured by appropriately combining them.

[0191] Sixth Embodiment [Cartridge System 100H] A cartridge system 100H according to a sixth embodiment of the present invention will be described with reference to Figures 56 to 63. The cartridge system 100H according to the sixth embodiment differs from the cartridge system 100 of the first embodiment in the configuration of the cartridge, etc. In the following description, configurations that are common to those already described will be assigned the same reference numerals, and duplicated description will be omitted.

[0192] 56 is a front view showing a cartridge system 100H. The cartridge system 100H has a clip unit 1 and a cartridge 5H that can accommodate the clip unit 1. Like the cartridge system 100, the cartridge system 100H is a support system for easily loading the clip unit 1 into the clip introduction device 200.

[0193] [Cartridge 5H] Like the cartridge 5, the cartridge 5H is a case capable of storing the clip unit 1. As shown in Fig. 56 , the cartridge 5H has a cartridge main body 70H formed in a substantially rectangular box shape and a storage area 7S formed inside the cartridge main body 70H.

[0194] The cartridge body 70H has an insertion passage 67 through which the sheath 220 can be inserted. The insertion passage 67 is formed so that the sheath 220 can be inserted therethrough. The insertion passage 67 has a first insertion passage 67a formed so that the sheath 220 can be inserted therethrough, and a second insertion passage 67b formed so that the arm 21 in the open state P1 can be inserted therethrough. The second insertion passage 67b partially overlaps with the first insertion passage 67a.

[0195] [Support Member 8H] The cartridge system 100H has a support member 8H. Similar to the support member 8, the support member 8H is a member that can restrict movement of the clip unit 1 by supporting the clip unit 1. Similar to the support member 8, the support member 8H can transition between a first state Pb1 and a second state Pb2.

[0196] The support member 8H is a member that can restrict movement of the clip unit 1 by engaging with the tip of the arm 21. Two support members 8H are provided spaced apart in the width direction W. The support members 8H are rotatably connected to the cartridge main body 70H. The support member 8H can transition from a first state Pb1 to a second state Pb2 by rotating. The support member 8H is provided at a position that overlaps with the tip of the arm 21 of the clip unit 1 stored in the cartridge 5H in the height direction H. The support member 8H has a support member main body 85H, an engagement portion 86H, and a rotation shaft 87H.

[0197] The support member main body 85H has a plate-like shape with its thickness direction aligned with the height direction H. The support member main body 85H is rotatably connected to the cartridge main body 70H. In this embodiment, the support member main body 85H is formed in a substantially semicircular shape when viewed from the height direction H.

[0198] The engaging portion 86H is a member that can engage with the tip of the arm 21. In this embodiment, the engaging portion 86H is a member that can engage with the tissue gripping portion 22 of the arm 21. The engaging portion 86H is a convex portion that protrudes in the height direction H from the side surface of the support member main body 85H. The engaging portion 86H is provided at a position that overlaps in the height direction H with the tip of the arm 21 of the clip unit 1 stored in the cartridge 5H.

[0199] The rotation shaft 87H is a member that rotatably connects the support member main body 85H and the cartridge main body 70H. The rotation shaft 87H is a member whose axial direction is the height direction H. The rotation shaft 87H is connected to the tip end of the support member main body 85H.

[0200] [Operation of Cartridge System 100H] Next, the operation of the cartridge system 100H will be described with reference to Figures 57 to 63.

[0201] 57 to 59 are diagrams illustrating a method for loading the clip unit 1 into the clip introducer 200 using the cartridge 5H.

[0202] 57 is a diagram showing the clip unit 1 connected to the clip introducer device 200. The user inserts the sheath 220 through the insertion passage 67 and advances the sheath 220 toward the distal end of the cartridge 5H to connect the clip unit 1 to the clip introducer device 200. At this time, the arm 21 is in the open state P1. At this time, the support member 8H supports the clip unit 1, so the clip unit 1 can be stably connected to the clip insertion device 200. At this time, the user, for example, holds the cartridge 5H with one hand while moving the sheath 220 with the other hand.

[0203] Figure 58 is a diagram showing the transition of the support member 8H to the second state Pb2. Figures 60 to 63 are diagrams showing the transition of the support member 8H from the first state Pb1 to the second state Pb2. After the clip unit 1 is connected to the clip introduction device 200, the user further pushes the clip unit 1 connected to the sheath 220 toward the distal end of the cartridge 5H. The distal end of the arm 21 applies a force toward the distal end of the support member 8H, causing the support member 8H to rotate about the rotation axis 87H. As the support member 8H rotates, the engagement between the distal end of the arm 21 and the engagement portion 86H is released, and the support member 8H transitions from the first state Pb1 to the second state Pb2.

[0204] 59 is a diagram showing the clip unit 1 being pulled out from the cartridge 5H. After the support member 8H transitions to the second state Pb2, the user can pull out the clip unit 1 from the cartridge 5H by retracting the sheath 220 toward the base end side of the cartridge 5H. At this time, the resistance received by the arm 21 is small, and the user can easily move the sheath 220.

[0205] According to the cartridge system 100H of this embodiment, since it has the support member 8H, it is possible to restrict the movement of the clip unit 1 stored in the cartridge 5H, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0206] Although the sixth embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the present invention. Furthermore, the components shown in the above embodiment and the modified examples shown below can be configured by appropriately combining them.

[0207] Seventh Embodiment [Cartridge System 100I] A cartridge system 100I according to a seventh embodiment of the present invention will be described with reference to Figures 64 to 68. The cartridge system 100I according to the seventh embodiment differs from the cartridge system 100 of the first embodiment in the configuration of the cartridge, etc. In the following description, configurations that are common to those already described will be assigned the same reference numerals, and duplicate description will be omitted.

[0208] Figure 64 is a front view showing cartridge system 100I. Figure 65 is a side view showing cartridge system 100I. Cartridge system 100I has a clip unit 1 and a cartridge 5I that can accommodate the clip unit 1. Like cartridge system 100, cartridge system 100I is a support system for easily loading the clip unit 1 into a clip introduction device 200.

[0209] [Cartridge 5I] Like the cartridge 5, the cartridge 5I is a case capable of storing the clip unit 1. As shown in Fig. 39 , the cartridge 5I has a cartridge main body 70I formed in a substantially rectangular box shape and a storage area 7S formed inside the cartridge main body 70I.

[0210] The cartridge body 70I is formed with an insertion passage 67I into which the sheath 220 can be inserted. The insertion passage 67I is formed so that the sheath 220 can be inserted. In this embodiment, the insertion passage 67I is formed in a substantially circular shape, and the outer diameter of the insertion passage 67I is larger than the outer diameter of the sheath 220.

[0211] Unlike the cartridge body 70, the cartridge body 70I is formed to be separable. In this embodiment, the cartridge body 70I is formed to be separable in the height direction H. The cartridge body 70I can be separated into a first cartridge body 70Im and a second cartridge body 70In. The first cartridge body 70Im and the second cartridge body 70In are connected by a plurality of connecting members 70h. The connecting members 70h are rod-shaped members extending in the height direction H.

[0212] Separation inducers 70Id are formed at the tip ends of the first cartridge body 70Im and the second cartridge body 70In, respectively. The pair of separation inducers 70Id are formed to sandwich the connection portion between the first cartridge body 70Im and the second cartridge body 70In in the width direction W, and are inclined portions that incline toward each other. The inclined portions formed on the pair of separation inducers 70Id are inclined toward each other as they progress toward the base end in the longitudinal direction L. By applying a force to the pair of separation inducers 70Id in a direction that moves them toward each other, a force is applied to the first cartridge body 70Im and the second cartridge body 70In in a direction that moves them away from each other.

[0213] [Support Member 8I] The cartridge system 100I includes a support member 8I. The support member 8I is a member that can restrict movement of the clip unit 1 housed in the cartridge 5I.

[0214] The support member 8I can transition between a first state Pb1 and a second state Pb2. When the cartridge main body 70I is separated, the support member 8I transitions from the first state Pb1 to the second state Pb2.

[0215] The support member 8I has a first support member 81I and a second support member 82I. The first support member 81I is a member that can restrict movement of the clip unit 1 stored in the cartridge 5E when in the first state Pb1. The second support member 82I is a member that restricts movement of the tip side of the clip unit 1 stored in the cartridge 5I in the longitudinal direction L when in the first state Pb1. The second support member 82I has a second support member main body 85 and a locking portion 86.

[0216] The first support member 81I is a member that can restrict movement of the clip unit 1 in the width direction W and height direction H by clamping the pressing member 3. Two first support members 81I are provided spaced apart in the width direction W. The pair of first support members 81I support the clip unit 1 by clamping the clip unit 1 from the width direction W. The shape of the first support member 81I is not limited. For example, the first support member 81I may be a recess formed at the position where the pressing member 3 is disposed, like the third stopper 70g.

[0217] The first support member 81I may be formed integrally with the cartridge body 70I, or may be provided as a separate body from the cartridge body 70I. When the first support member 81I is formed integrally with the cartridge body 70I, for example, the first support member 81I is formed by a convex portion extending in the height direction H from the inner surface of the cartridge first body 70Im and a convex portion extending in the height direction H from the inner surface of the cartridge second body 70In.

[0218] Similar to the second support member 82, the second support member 82I has a second support member main body 85 and a locking portion 86 extending from the second support member main body 85 toward the base end. The second support member 82I may be formed integrally with the cartridge body 70I, or may be provided as a separate body from the cartridge body 70I. When the second support member 82I is formed integrally with the cartridge body 70I, for example, the second support member 82I is formed by a convex portion extending in the height direction H from the inner surface of the cartridge first main body 70Im and a convex portion extending in the height direction H from the inner surface of the cartridge second main body 70In.

[0219] [Operation of Cartridge System 100I] Next, the operation of the cartridge system 100I will be described with reference to Figures 66 to 68.

[0220] 66 to 68 are diagrams illustrating a method for loading the clip unit 1 into the clip introducer 200 using the cartridge 5I.

[0221] 66 shows the clip unit 1 connected to the clip introducer device 200. The user inserts the sheath 220 through the insertion passage 67I and advances the sheath 220 toward the distal end of the cartridge 5I to connect the clip unit 1 to the clip introducer device 200. At this time, the arm 21 is in the open state P1. At this time, the pressing member 3 abuts against the locking portion 86 of the second support member 82, so the clip unit 1 can be stably connected to the clip insertion device 200. At this time, the user, for example, holds the cartridge 5I with one hand while moving the sheath 220 with the other hand.

[0222] 67 is a diagram showing the state in which the support member 8I has transitioned to the second state Pb2. With the clip unit 1 connected to the clip introducer 200, the user applies force to the pair of separation inducers 70Id in directions that bring them closer to each other, thereby separating the cartridge body 70I. At this time, the support member 8I transitions from the first state Pb1 to the second state Pb2.

[0223] 68 is a diagram showing the clip unit 1 being pulled out from the cartridge 5I. After the support member 8I transitions to the second state Pb2, the user can pull out the clip unit 1 from the cartridge 5I by retracting the sheath 220 toward the base end side of the cartridge 5I. At this time, the resistance received by the arm 21 is small, and the user can easily move the sheath 220.

[0224] According to the cartridge system 100I of this embodiment, since it has the support member 8I, it is possible to restrict the movement of the clip unit 1 stored in the cartridge 5I, while the resistance that the arm 21 receives is small when the clip unit 1 is loaded into the clip introducer device 200. Therefore, the clip unit 1 loaded into the clip introducer device 200 can be easily used.

[0225] Although the seventh embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the present invention. Furthermore, the components shown in the above embodiment and the modified examples shown below can be configured by appropriately combining them.

[0226] 100 Cartridge system 1 Clip unit 2 Clip 21 Arm 22 Tissue gripping portion 23 Grip portion 24 Sliding portion 25 Engagement portion 28 Base end portion 3 Pressing member (holder) 3A Pressing tube 3B Pipe 30 Pressing tube main body 31 Wing 32 Fastening member 38 Internal space 4 Connecting member 41 Tip connecting portion 42 Base end connecting portion 43 Connecting portion main body 44 Connecting arm 45 Rod-shaped portion 5 Cartridge 67 Insertion passage (opening) 67a First insertion passage 67b Second insertion passage 70 Cartridge main body (case) 7S Storage region 71 First region 72 Second region 73 Third region 74 Sheath insertion region 76 Sheath abutment portion 8 Support member 81 First support member 82 Second support member 83 Clamping portion 84 Push-in portion 85 Second support member main body 86 Locking portion 200 Clip introduction device (applicator) 220 Sheath 221 Distal tip 222 Distal coil 224 Proximal coil 230 Operation wire 231 Arrowhead hook 232 Wire 240 Operation portion 241 Operation portion main body 242 Slider 248 Thumb ring P1 Open state P2 Closed state Pb1 First state Pb2 Second state

Claims

1. A cartridge system comprising: a clip unit having an arm that can be opened and closed in an opening and closing direction and that can be connected to an applicator; and a case that houses the clip unit and has an opening on an end face, wherein the opening forms a first insertion passage through which the applicator can be inserted in an insertion / removal direction, and a second insertion passage that partially overlaps with the first insertion passage and through which the arm can be inserted in the insertion / removal direction.

2. The cartridge system according to claim 1, wherein the arm is capable of transitioning between an open state and a closed state, is housed in the case in the open state, and the second insertion passage allows the arm in the open state to be inserted therethrough.

3. The cartridge system according to claim 2, wherein the applicator has a wire connectable to the clip unit, and in a width direction perpendicular to the insertion / removal direction, the length of the first insertion passage is greater than the outer diameter of the wire, and the length of the second insertion passage is greater than the length of the arm stored in the case in the open state, and in a height direction perpendicular to the insertion / removal direction and the width direction, the length of the first insertion passage is greater than the outer diameter of the wire, and the length of the second insertion passage is greater than the length of the arm stored in the case in the open state.

4. The cartridge system according to claim 1, wherein the second insertion passage has a slit shape.

5. A cartridge system as described in claim 1, wherein the arm is capable of transitioning between an open state and a closed state, the case extends in the insertion / removal direction and has a tip end and a base end, the applicator has a wire connectable to the clip unit, the cross section of the tip end is formed so that the arm in the open state can be inserted therethrough, and the cross section of the base end is formed so that the arm and the wire in the open state can be inserted therethrough.

6. The cartridge system according to claim 1, wherein the clip unit is connectable to the applicator at a base end side in the insertion / removal direction, and is housed in the case with the base end side facing the opening.

7. A cartridge system comprising: a clip unit having an arm that can be opened and closed in an opening and closing direction and that can be connected to an applicator; and a case into which the applicator can be inserted and removed in an insertion / removal direction and that can house the clip unit, wherein the arm can be transitioned between an open state and a closed state, and the case has a storage area in which the arm in the open state is stored so that it can be moved in the insertion / removal direction, and the storage area has a first area, a second area, and a third area that are arranged in that order from the tip side in the insertion / removal direction, and the widths of the first area and the third area are greater than the width of the second area in a width direction perpendicular to the insertion / removal direction.

8. A cartridge system as described in claim 7, wherein the case has a first stopper in the second area that extends toward the stored arm, the first stopper restricting movement of the arm toward the base end in the insertion / removal direction, and when a force of a predetermined magnitude or greater is applied toward the base end of the arm whose movement is restricted by the first stopper, the restriction is released.

9. A cartridge system as described in claim 7, wherein the clip unit has a holder that supports the arm, and the case has a second stopper in the storage area, and the second stopper restricts movement of the holder toward the tip side in the insertion / removal direction.

10. A cartridge system as described in claim 8, wherein the clip unit has a holder that supports the arm, the case has a second stopper in the storage area, the second stopper restricts movement of the holder toward the tip in the insertion / removal direction, and when the clip unit is stored in the storage area, the tip of the arm is positioned closer to the tip than the first stopper in the insertion / removal direction, and the holder is positioned closer to the base end than the second stopper in the insertion / removal direction.

11. A cartridge system as described in claim 7, wherein the clip unit has a holder that supports the arm, and the case has a third stopper in the storage area, and the third stopper restricts movement of the holder in a width direction perpendicular to the insertion / removal direction.

12. The cartridge system according to claim 11, wherein the third stopper restricts movement of the holder in the insertion / removal direction and in a height direction perpendicular to the width direction.

13. A cartridge system as described in claim 11, wherein the case has a second stopper in the storage area, the second stopper restricts movement of the holder toward the tip in the insertion / removal direction, the third stopper is a recess formed to allow the holder to move in the insertion / removal direction, and the second stopper is a convex portion provided on the tip side of the third stopper in the insertion / removal direction.

14. A cartridge system comprising: a clip unit connectable to an applicator, the clip unit having an arm that can be opened and closed in an opening and closing direction and a holder that supports the arm; a support member that can support the clip unit; and a case that has an opening through which the applicator can be inserted in an insertion and removal direction and that can house the clip unit and the support member, wherein the support member is configured to be able to transition between a first state in which it supports the clip unit with the base end side of the clip unit facing the opening, and a second state in which it releases support of the clip unit.

15. A cartridge system as described in claim 14, wherein the arm is capable of transitioning between an open state and a closed state, the support member forms a clamping portion capable of supporting the clip unit, and when the clip unit is housed in the case, the arm is in the open state, and when the support member is in the first state, the width of the clamping portion in a width direction perpendicular to the insertion / removal direction is smaller than the length of the arm in the open state in the opening / closing direction, and when the support member is in the second state, the width of the clamping portion in the width direction is greater than the length of the arm in the open state in the opening / closing direction.

16. The cartridge system according to claim 14, wherein the support member transitions from the first state to the second state by moving the support member in a direction away from the arm.

17. The cartridge system according to claim 14, wherein the support member transitions from the first state to the second state in response to movement of the applicator in the insertion / removal direction.

18. The cartridge system according to claim 16, further comprising a push-in portion that can move the support member in a direction away from the arm by moving the push-in portion in the insertion / removal direction.

19. The cartridge system according to claim 18, wherein the pushing portion can be moved in the insertion / removal direction by moving the arm in the insertion / removal direction.

20. The cartridge system according to claim 14, wherein the case is formed to be separable, and when the case is separated, the support member transitions from the first state to the second state.

Images