JP6649830B2 - Endoscope treatment tool - Google Patents

Description

  The present invention relates to a clip unit for a ligating device that is inserted into a body cavity of a living body to grip a living tissue.

  In general, a ligation device for endoscopic surgery is guided through the channel of the endoscope to the digestive tract, and opens and closes an arm of a clip unit arranged at the distal end of the ligation device to clamp an affected part or a blood vessel. The clip unit holding the affected part or the like is configured to be separated and left in the body.

  The following patent documents are described as documents describing the technology relating to the ligating device including the clip unit according to the related art. Patent Literature 1 below discloses a clip having two intersecting arm legs each having a claw at a tip, a cylindrical tightening ring fitted to an outer periphery of the clip to close the two arm legs. Patent Document 2 describes three clip arms each having a claw at a tip, and a cylindrical tightening ring that fits around the three clip arms and closes the clip. Are described.

JP 2007-222649 A JP-T-2001-520069

  In the arm having two arm legs described in Patent Document 1 described above, the two arm legs are closed at the same time by moving the tightening ring in the distal direction. When the wound is closed by the claw provided in the above, if the wound is small and fits within the range where the arm leg is widened, the wound can be closed.

  However, in the case of a large wound that exceeds the range in which the arm legs are widened, it is necessary to hook one side of the wound with one arm leg claw and then move the other arm leg to the opposite side to pinch it. It is difficult to move the other arm leg to the opposite side while one side of the wound is hooked by the leg nail, and this has caused a problem of taking much time for the operation. To deal with this, for example, opening a hole to be hooked on one side of the wound, hooking one arm leg claw into the opening hole and moving the other arm leg to the opposite side, or using multiple clips from the wound end Although it is conceivable to pinch the parts, it also takes time to perform the procedure, which causes a problem that the burden on the patient increases.

  The clip having three arm legs described in Patent Literature 2 has the base of the arm leg connected to the same position at the tip of the operation wire, and the tightening ring simultaneously closes the three arm legs. In the case of a large wound that exceeds the range in which is spread, the same problem as that of the clip described in Patent Literature 1 is caused.

The present invention has been made in view of such a situation, and provides a clip unit for a ligating apparatus that can easily ligate a wound having a size exceeding a range in which a plurality of arm legs extend. With the goal.

In order to achieve the above object, the present invention provides an arm having a base portion at a rear end, which is provided with an elastic restoring force in which ends of a pair of arm legs formed by folding a long flat plate are moved away from each other. A cylindrical ring inserted from the base of the arm leg of the arm leg, wherein the ring is moved from the base of the arm leg toward the tip so that claws provided at the tip of the arm leg face each other and close. A clip unit for a ligating apparatus, wherein the one arm leg is cut and branched in a direction in which the one arm leg extends from a midway from a root to a tip of the one arm leg of the pair of arm legs. A first feature is that a third arm leg that has a claw that protrudes at the tip and extends in a direction different from the direction toward the tip of the leg is provided.

Further, in the clip unit for a ligating apparatus according to the first aspect , the direction different from the direction toward the tip of one arm leg of the third arm leg is a direction away from the other arm leg. This is the second feature .

Further, in the clip unit for a ligating device according to the first aspect, a direction different from a direction toward a tip of one arm leg of the third arm leg is a direction approaching the other arm leg. Is a third feature.

Further, the present invention provides the clip unit for a ligating device according to any one of the first to third features, wherein the pair of arm legs are formed so that their distal ends are curved in a direction away from each other. 4 is characterized, in the ligating apparatus for clip unit of the third one of the features from the first, the pair of arms legs, that the tip is formed by bending in a direction away from each other in the fifth Features.

According to the present invention, in the clip unit for a ligating apparatus according to any one of the above features, two claws protruding in a direction toward the arm legs at both ends are formed at a tip of the arm leg located at the center of the arm legs. The sixth feature is that, in the clip unit for a ligating device according to any one of the features, the arm leg located at the center of the arm legs is formed wider than the other arm legs. This is the seventh feature.

  The clip for a ligating device according to the present invention branches from an intermediate position from the base to the tip of one arm leg, extends in a direction different from the direction toward the tip of the one arm leg, and has a claw projecting to the tip. When the ring is moved from the initial state in which the pair of arm legs expand outward due to elastic restoring force to a position near the position reaching the third arm leg, the other arm is provided. When the leg and the third arm leg approach each other and the ring is further moved to the distal side, one arm leg starts to close, and the three arm legs are closed by further moving the ring in the distal direction. By doing so, it is possible to provide a clip unit capable of easily ligating a widely opened wound.

FIG. 3 is a perspective view illustrating a ligating device including a clip unit according to the present invention. FIG. 2 is a perspective view showing the clip unit according to the first embodiment of the present invention. FIG. 9 is a perspective view showing a clip unit according to a second embodiment of the present invention. The perspective view showing the clip unit by the example of the present invention. FIG. 5 is a view for explaining the operation of the clip unit according to the first embodiment. FIG. 4 is a view for explaining the principle operation of the clip unit according to the present invention. The figure for demonstrating the treatment by the clip unit by 1st Embodiment. The figure for demonstrating the treatment by the clip unit by 1st Embodiment. FIG. 11 is a view showing a clip unit according to still another embodiment of the present invention. FIG. 11 is a view showing a clip unit according to still another embodiment of the present invention. The figure which shows the clip unit which changed the thickness of the arm branch leg of this invention. The figure which shows the clip unit which changed the width | variety of the arm branch leg of this invention.

  Hereinafter, an embodiment of a clip unit used in a ligation device according to the present invention will be described. First, a ligation device to which a cup unit according to the present embodiment is applied will be described.

[Ligation device structure]
The clip unit for a ligating apparatus according to the present embodiment is passed through a treatment instrument guide tube (channel) of an endoscope, and is attached to a distal end of the ligating apparatus for holding an affected part in a digestive organ to stop bleeding and the like. As shown in FIG. 1, the ligating device inserted into the endoscope is connected to an operation unit 300 for operating a doctor or the like to open and close the clip unit 100 via the operation unit 300 and a coupling unit 211. A flexible tubular sheath 200 and an operation wire 340 extending from the slider 320 of the operation unit 300 and penetrating through the sheath 200 are connected to each other, and the doctor at the operation unit 300 opens and closes the arm at the distal end of the sheath. And a clip unit 100.

  The operating unit 300 includes a cylindrical shaft 310 that is gripped by a doctor's hand, a slider 320 that is fitted around the shaft 310 and slides in the axial direction, and a rear end of the shaft 310. And a finger ring 330 attached to the shaft portion 310. The slider 320 is moved in the longitudinal direction with respect to the shaft portion 310 to pull or push out the operation wire 340, thereby opening and closing the distal arm. For example, a physician removes the clip unit 100 from the operation wire by holding the sheath 200 at the affected part in the digestive tract, opening and closing the arm at the distal end with the clip unit 100 positioned at the affected part, and holding the affected part in the sandwiched state. Thus, the affected part is configured to stop bleeding or the like.

[Structure of clip unit 100]
As shown in FIG. 2, the clip unit according to the first embodiment of the present invention has a cylindrical ring 109 and an end protruding from the ring 109, and is directed forward (toward the distal end) when no external force is applied. An elongated material having spring properties in an expanded shape is formed by being folded back into two forks, and the folded back portions of the two forks are opened outward when no external force is applied from one arm leg 101a and the other arm leg 101b. Arm 101 is provided.

  A claw 10e protruding inward is provided at the tip of the arm leg 101a, and the arm leg 101b is cut and branched in a direction extending from the middle part (branch point) extending toward the tip into two. An arm branch leg 101b2 corresponding to the tip leg 101b1 and the third arm leg is provided, and a claw 10g projecting toward the claw 10e of the arm leg 101a is provided at the tip of each of the arm tip leg 101b1 and the arm branch leg 101b2. A claw 10f is provided.

  The arm leg 101b according to the present embodiment includes an arm tip leg 101b1 that extends in a bending direction of the arm leg 101b, and an arm branch leg 101b2 that branches from an intermediate portion of the arm tip leg 101b1 and extends inward. In other words, the clip according to the present embodiment has a fork having three claws at the tip by branching bifurcated from one half of the arm leg and bending one of the branched arm legs inward. It constitutes a crotch clip. In addition, when the three claws according to the present invention are closed, the length of the arm legs is changed so that the three claws overlap in the longitudinal direction of the arm and are integrated, or the length of the arm legs is made the same so that they do not overlap. Is also good.

  In the present application, the arm leg located at the center (the arm branch leg 101b2 in the example of FIG. 2) among the three arm legs constituting the trifurcated clip is referred to as a central arm leg.

[Description of mechanism operation]
In the clip unit configured as described above, when the ring 109 at the base of the arm 101 shown in FIG. 5A is moved toward the tip of the arm, the ring 109 tends to expand as shown in FIG. 5B. Since the arm 101 (the arm leg 101a and the arm leg 101b) acts in the closing direction, the claw 10f at the tip of the arm branch leg 101b2 and the claw 10e at the tip of the arm leg 101a first come close to each other.

  Next, in the clip unit of this embodiment, when the ring 109 is further moved to the distal end side, as shown in FIG. 5C, since the ring 109 also covers the branch portion of the arm 101, the arm distal leg 101b1 and the arm leg 101a and The arm comes close to the arm branch leg 101b2, and the three claws 10e to 10e operate so as to overlap each other.

  Thus, as shown in FIG. 6, the clip unit according to the present embodiment is similar to the arm leg 101a, which is a leg that is formed by bending a long flat plate substantially in parallel with a basic curvature and has a claw 10e at the tip. The other leg which has the arm 101 curved by the basic curvature, which extends from about a half portion and has an arm tip leg 101b1 having a claw 10g at the tip, and a leg branched inward from a (branch point) of the arm leg 101b. The arm branch leg 101b2, which is curved inward with a second curvature smaller than the basic curvature and has a claw 10f at the tip, forms a three-pronged clip having an inward claw at the tip of the three legs. The U-shaped portion of the arm 101 curved substantially in parallel is referred to as a first region 80, and a portion of the arm leg from the end of the first region 80 to the branch portion is referred to as a second region 8. When the arm leg from the second area 81 to the tip claw is called a third area 82, a ring 109 is attached to the first area 80, and the arm tip leg 101b1, the arm branch leg 101b2, and the arm leg 101a When the ring 109 is moved to a position where the ring 109 reaches the second region 81 from the initial state in which the ring 109 is expanded outward by the elastic restoring force, the claw 10f at the tip of the arm branch leg 101b2 and the claw 10e at the tip of the arm leg 101a have an When the ring 109 approaches and narrows in the direction of the arrow X, and further moves the ring 109 into the second region 81, in addition to the approach of the claw 10 f and the claw 10 e, the base of the arm tip leg 101 b 1 is fitted into the ring 109. The claw 10g starts closing in the arrow Y direction toward the arm claw 10f, and furthermore, the ring 109 is moved toward the distal end of the arm 101 in the third area 82. Are configured to close integrally with three nails 10e~10g by moving to.

[Explanation of operation]
The treatment operation of the clip unit thus configured will be described below with reference to FIGS. 7A and 7B.

  First, when ligating the greatly widened wound 90 using the clip unit according to the present embodiment, the doctor places the clip unit on the affected part in the digestive tract using a sheath, and as shown in FIG. The claw 10e of the arm leg 101a, which is one leg of the wound 101, is positioned at a position J slightly away from one edge of the wound 90, and the arm branch leg 101b2 inside the arm leg 101b, which is the other leg, is moved to the edge of the wound 90. Position inside.

  From this state, the doctor moves the ring 109 in the direction of the tip of the arm (direction A), and narrows the arm legs 101a and 101b in the direction of arrow B. As shown in FIG. 10 e and the center claw 10 f sandwich the edge of one end of the wound 90.

  Next, as shown in FIG. 7B (a), the doctor holds the entire clip unit in the state where the doctor holds one edge of the wound 90 between the nails 10e and 10f as shown in FIG. C direction) to position the claw 10g of the arm tip leg 101b1 outside the other edge of the wound 90.

  In this state, the doctor presses the claw 10g of the arm tip leg 101b1 against the other edge of the wound 90 and pushes the ring 109 further in the arm tip direction to close the three arm legs, as shown in FIG. 7B (b). The wound 90 that is greatly opened by the three nails 10e to 10g can be ligated and closed.

  As described above, in this embodiment, the clip unit branches the arm leg 101a, which is one of the curved legs of the arm 101 and has the claw 10e at the tip, and the other curved arm leg 101b of the arm 101 from the middle. A three-pronged clip is formed from the arm tip leg 101b1 having the claw 10g and the arm branch leg 101b2 having the claw 10f, and the distance between the claw 10e and the claw 10f is reduced as the ring 109 is moved toward the tip side of the arm 101 to cut the wound. While holding one edge of the opening 90, the nail 109 is moved to the other edge side of the wound 90 while the edge of the wound is held, and the ring 109 is moved to the arm tip side to a position beyond the branch point while the claw 10g is moved to the other edge side of the wound 90. Thereby, a widely opened wound can be easily ligated.

  In the above-described embodiment, the clip unit according to the above-described embodiment has an example in which one arm leg of the curved arm is branched and one arm branch leg is bent inward. However, the clip unit according to the present invention is shown in the first embodiment. The configuration is not limited to this, and for example, as shown in FIG. 3, the arm branch leg 102b2 may be curved outward in the direction of the other arm leg 102a.

  As shown in FIG. 3, the clip unit according to the second embodiment has a cylindrical ring 109 and an end protruding from the ring 109, and expands forward (toward the distal end) when no external force is applied. Formed by folding a long material having a spring property in a forked shape into two forks, and the folded portions of the two forks open outward when no external force is applied to the arm. The arm comprises one arm leg 102a and the other arm leg 102b. 102 is provided.

  A claw 10e projecting inward is provided at the tip of the arm leg 102a, and the arm leg 102b is cut and branched in a direction extending from the middle part (branch point) extending toward the tip into two. A tip leg 102b1 and an arm branch leg 102b2 corresponding to a third arm are provided, and a claw 10g and a claw projecting toward the claw 10e of the arm leg 102a are provided at the tips of the arm tip leg 102b1 and the arm branch leg 102b2. 10f is provided.

  The arm leg 102b according to the present embodiment includes an arm tip leg 102b1 that extends in the bending direction of the arm leg 102b, and an arm branch leg 102b2 that branches from an intermediate portion of the arm tip leg 102b1 and extends outward and curves. That is, the clip according to the second embodiment is provided with three claws at the tip by bifurcating from one half of the arm leg and bending one arm branch leg outward. A trifurcated clip is configured, and in this example, the arm tip leg 102b1 corresponds to the central arm leg.

That is, in the clip unit according to the present embodiment, the arm leg 102a, which is one of the curved legs of the arm 102, and the other curved arm leg 102b of the arm 102 are similarly branched from the middle (branch point) to the inside. The distal leg 102b1 and the arm branch leg 102b2 are formed, the distance between the nail 10g and the nail 10e is reduced as the ring 109 is moved toward the distal end of the arm 102, and the ring 109 is further moved to a position where the ring 109 covers the branch point. 10f starts closing, and further, the three claws 10g, 10e, and 10f are closed by moving the ring 109 toward the distal end of the arm 102.
[Reference Example 1]

  The clip unit according to the present invention is not limited to a configuration in which one arm leg is branched as in the above-described embodiment, and an arm additional leg having a claw at a tip end on one folded arm leg is used for welding or bonding. It may be provided by other means.

As shown in FIG. 4A, the clip unit according to this reference example has a cylindrical ring 109 and an end protruding from the ring 109, and expands forward (toward the distal end) when no external force is applied. An arm tip leg and 103b1, which are formed by folding a long material having a spring property in an open shape into two forks and extending from one arm leg 103b which is a folded portion when no external force is applied, and the arm tip. An arm additional leg 104 corresponding to a third arm leg which is welded outward to an intermediate portion (weld portion) A of the leg and 103b1; and the other arm leg 103a which is a folded portion. A claw 10n, a claw 10m, and a claw 10e that protrude inward are provided at the distal ends of the arm 103b1, the arm additional leg 104, and the arm leg 103a.

Clip unit according to the present reference example movement, as in the second embodiment, narrowing the interval between the claws 10m and claw 10e accordance moves the ring 109 on the tip side of the arm 103, to a position to further cover the welded portions to the ring 109 Then, the claw 10n starts to close, and the ring 109 is further moved toward the tip of the arm 103 to close the three claw 10e, the claw 10n, and the claw 10m. In this example, the arm tip leg 103b1 Corresponds to the central arm leg.
[Reference Example 2]

As shown in FIG. 4 (b), a clip unit according to still another reference example of the present invention has a cylindrical ring 109 and an end protruding from the ring 109, and is forwardly (in the distal direction) when no external force is applied. ) Is formed by folding a long material having spring properties into a forked shape in a shape expanding toward ()), extends from one arm leg 105b which is a folded portion when no external force is applied, and has a claw 10n at the tip. An arm tip leg 105b1, an arm additional leg 106 welded inward to a welding point A of the arm leg 105 and having a claw 10m at the tip and corresponding to a third arm leg, and the other being a folded portion In this example, the arm additional leg 106 corresponds to the central arm leg.

In the clip unit according to the reference example configured as described above, the distance between the claw 10m and the claw 10e is reduced as the ring 109 is moved to the distal end side of the arm 105 as in the first embodiment. The claw 10n starts to be closed by moving the claw 10n to the position to be moved, and the three claw 10e, the claw 10n, and the claw 10m are closed by further moving the ring 109 toward the distal end of the arm 103.

Further, the clip unit according to the present invention is not limited to the three-pronged clip as in the above-described embodiment, but may be configured to provide a plurality of arm branch legs as the third arm legs. Further, the present invention is not limited to a U-shaped arm having a long flat plate curved. Also, position where the arm prongs is substantially the center of the arm leg is desired, it is not limited thereto, may be constructed from the arm base portion side or tip side branch to so that.

Further, in the above-described embodiment, an example in which the arm legs are bent outward has been described. However, the present invention is not limited to this, and only a small portion exceeding the first region 80 is basically bent, this is from a minute portion that extends in a straight line, only the third arm leg also root portion of the branches is the destination curved by the second stepladder, or may be extending in a straight line toward the tip.

Further, in the above-described embodiment, an example in which the arm legs are curved has been described. However, the present invention is not limited to this. For example, as shown in FIG. Arm leg 201a having a claw 20e at the end, and one of the arm legs 201a having the bent one arm leg bent outward at a predetermined angle so as to face outward. Arm leg 201b1 having a claw 20g at its tip, the other leg bent at a predetermined angle so as to move toward the right end, and a leg branched inward from a middle (branch point) of the arm tip leg 201b. The arm branch leg 201b2 which is bent inward at the second bending angle and has the claw 20f at the tip may form a three-pronged clip having an inward claw at the tip of the three legs. Well, in this example, Branch leg 201b2 is equivalent to the central arm leg.
In the present embodiment, the example in which the arm branch leg 201b is formed by bending is described. However, the present invention is not limited to this, and an additional arm leg that does not bend by welding or the like may be provided.

Further, in each embodiment described above, all of the claws of three arms (branches) leg tip has been described an example where projecting toward only the inside, the present invention is not limited thereto. For example, as shown in FIG. 9, one leg is formed by bending a long flat plate substantially in parallel and has an arm leg 101a having a claw 10e at the tip, and the other leg is similarly formed by bending the arm 101 at a basic curvature. An arm tip leg 101b1 extending from about a half portion and having a claw 10g at the tip thereof, and a second leg which is branched inward from the middle (branch point) of the arm leg 101b and is smaller than the basic curvature. An arm corresponding to a third arm leg having a claw 10z1 and a claw 10z2 which are bent inward by a curvature, bent twice at the tip, and project from both sides outward from the center and project in opposite directions. It may be constituted by the branch leg 101b2. The two-fold claw 10z may be provided with claws directed to both outsides by welding without bending.

Further, in the above-described embodiment, an example has been described in which, of the three arm legs (arm branch legs) , the claw of the arm leg located at the center is provided with a claw extending in only one direction. However, for example, two claws may be provided by branching or welding so as to extend from the center toward both the outer arm legs.

  In the clip unit of this example, when the ring 109 is moved to a position where the ring reaches the second area 81, the gap between the claw f at the tip of the arm branch leg 101b2 and the claw e at the tip of the arm leg 101a approaches in the arrow X direction. The nail 10z2 and the nail 10e can sandwich the affected part from both directions when sandwiching the edge of the wound that is narrow and wide open, and the nail 10z1 and the nail 10g can sandwich the affected part when closing the wound, thereby strengthening the ligation force. Can be

Further, in the above-described embodiment, an example has been described in which the strengths of the three arm legs (arm branch legs) are the same, but the clip unit according to the present invention reduces the strength (rigidity) of the central arm leg located at the center. The strength may be set to be higher than that of the other arm legs, or the length of the central arm leg and the branch outer arm leg may be longer than the other arm leg. By making the center arm leg stronger than the other, the clip unit according to the present embodiment reduces the amount of displacement when the center arm leg is fitted to the ring 109, and the other arm with respect to the center arm leg as a reference. Since the legs follow and move, the treatment can be facilitated, and the treatment can be facilitated by increasing the length of the branched outer arm branch leg.

  Explaining the treatment when the strength is changed, in the conventional clip unit having the same strength of three arm legs and the like, the second gap becomes narrower than the first clamping as shown in FIG. 7B. Although there was a possibility that the treatment was difficult, the clip unit according to the present example was designed so that the arm branch leg at the center position was made stronger than others, as in this example, 7B (a), the central arm branch leg 101b2 draws the arm leg a1, and the central arm branch leg 101b2 also pulls the arm branch leg b1 in the operation as shown in FIG. 7B (b). Therefore, the treatment can be facilitated.

As a method for stronger than the intensity of the central arm leg to another, the width and thickness of the material of the central arm leg position of the fine plate-like arm body prior to cutting is in adopting A over arm prongs Can be changed.

  As shown in FIG. 10, the clip unit according to the present embodiment in which the thickness of the material at the position of the center arm leg of the thin plate-shaped arm base before the cutting processing is changed, as shown in FIG. The width is approximately twice as large as the thickness L1 of the arm tip leg 107b1 or the like. In this example, the position of the claw 10z2 toward the arm leg 107a provided on the central arm branch leg 107b2 is provided at a position facing the claw 10e.

The clip assembly of the present embodiment with varying width of the material of the central arm leg position of the fine plate-shaped arm body before cutting will be described with reference to FIG. 11. First, as shown in FIG. 11A, a claw 10g and 10e are formed on both ends of a conventional arm base 108A before processing two conventional arm legs. The arms 108 are formed such that both end portions forming the legs are wide and are bent such that the curved base line at a position slid from the center line of the central position of the entire length becomes the center of the U-shape, whereby the claws 10g and 10e are shifted and closed. Had been processed.

  The clip unit shown in FIG. 2, which is the above-described embodiment, is cut from one of the arm legs if it is cut from the center of the distal end side of the arm leg of the conventional arm base as shown in FIG. The arm leg on the side is formed to be narrow, and as shown in FIG. 11B, the width of the left arm tip leg 101b1 and the arm branch leg 101b2 is set to be twice the width of the right arm leg 101a. If the arm tip leg 101b1 and the arm branch leg 101b2 are cut from the center and processed, the width of each arm leg becomes the same.

On the other hand, as shown in FIG. 11C, the clip unit in the present example in which the width of the material at the position of the center arm leg is changed is a left arm tip leg with respect to the width of the right arm leg 101a. The width of 101b1 is set to the same width, the width of the arm branch leg 101b2 is doubled, the width of the left arm tip leg 101b1 and the arm branch leg 101b2 is tripled, and the horizontal broken line of the arm tip leg 101b1 and the arm branch leg 101b2. The portion indicated by is cut. As a result, the clip unit according to the present embodiment can increase the strength of the central arm leg (including the arm branch leg and the arm additional leg) with respect to the strength of both outer arm legs (arm branch legs) .

  As described above, the clip unit according to the present embodiment is configured so that the distal ends of a pair of arm legs (for example, reference numerals 101a and 101b in FIG. 6) made of a long flat plate apply elastic restoring force in a direction away from each other. An arm (for example, reference numeral 101) curved by curvature and a cylindrical ring (for example, reference numeral 109) inserted from the pair of arm leg bases are provided, and the ring (for example, reference numeral 109) is attached to the arm leg base. A clip unit configured such that claws (for example, reference numerals 10g, 10e) provided at the distal ends of the arm legs are closed to face each other by moving the arm legs toward the distal end, and the clip unit is moved from the root to the distal end of the arm leg. Branching from the position to bend inward or outward with a curvature different from the basic curvature toward the tip, in the same direction as the claw at the tip of the one arm leg Branch arms legs having a pawl which projects (e.g., code 101b2) to form a ligature of triple branching provided with.

  In this clip unit, the substantially parallel curved U-shaped portion of the long flat plate is referred to as a first region, and a portion of the arm leg from the end of the first region to the branch portion is defined as a second region. When the arm leg from the end of the second region to the claw at the tip is called the third region, a ring is attached to the first region, and the third arm branch leg, the second arm branch leg, and the When the ring is moved from the initial state in which the one arm leg expands outward due to the elastic restoring force to a position where the ring reaches the second region, the second claw at the tip of the second arm branch leg and the first claw at the tip of the first arm leg are moved. When the pawl approaches and narrows, and the ring is further moved into the second area, in addition to the first pawl and the second approach of the second arm branch leg and the first arm leg 101a, the third arm branch leg distal end is closed. The three claws fit into the ring, By providing a clip unit capable of easily ligating a widely opened wound, the nail is started to close and the first to third nails are closed by moving the ring further in the distal direction. be able to.

10e, 10f, 10g, 10m, 10n nail, 90 wound,
100 clip unit, 101 arm, 101a, 101b arm leg,
101b1 arm tip leg, 101b2 arm branch leg,
102 arm, 102a, 102b arm leg,
102b1 arm tip leg, 102b2 arm branch leg,
103 arm, 103a, 103b arm leg,
103b1 arm tip leg, 104 arm additional leg,
105 arm, 105a, 105b arm leg,
105b1 arm tip leg, 106 arm additional leg,
109 ring, 200 sheath, 211 connecting part, 300 operating part,
310 Shaft, 320 Slider, 330 Finger ring, 340 Operation wire

Claims (7)

An elastic restoring force is applied to the ends of the pair of arm legs formed by folding the long flat plate in such a direction that the distal ends of the pair of arm legs move away from each other, and the arm having a root at the rear end and the arm of the pair of arm legs are inserted. A clip unit for a ligating device, comprising a cylindrical ring, wherein the claw provided at the tip of the arm leg is closed facing each other by moving the ring from the base of the arm leg to the tip,
A direction different from the direction toward the tip of the one arm leg, which is cut and branched in a direction in which the one arm leg extends from the base toward the tip of the one arm leg of the pair of arm legs, A clip unit for a ligating device, wherein a third arm leg having a claw projecting from a tip end thereof is provided. The clip unit for a ligating device according to claim 1 , wherein the direction different from the direction toward the tip of one arm leg of the third arm leg is a direction away from the other arm leg. The clip unit for a ligating device according to claim 1 , wherein the direction different from the direction toward the tip of one arm leg of the third arm leg is a direction approaching the other arm leg. The clip unit for a ligating device according to any one of claims 1 to 3 , wherein the pair of arm legs are formed so that tips thereof are curved in a direction away from each other. The clip unit for a ligating device according to any one of claims 1 to 3 , wherein the pair of arm legs are formed by bending the distal ends in a direction away from each other. The ligature according to any one of claims 1 to 5, wherein two claws protruding in a direction toward the arm legs at both ends are formed at an end of the arm leg located at the center of the arm legs. Clip unit for equipment. The clip unit for a ligating device according to any one of claims 1 to 6, wherein the arm leg located at the center among the arm legs is formed wider than the other arm legs.

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