WO2023095875A1 - 結紮装置 - Google Patents
結紮装置 Download PDFInfo
- Publication number
- WO2023095875A1 WO2023095875A1 PCT/JP2022/043550 JP2022043550W WO2023095875A1 WO 2023095875 A1 WO2023095875 A1 WO 2023095875A1 JP 2022043550 W JP2022043550 W JP 2022043550W WO 2023095875 A1 WO2023095875 A1 WO 2023095875A1
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- WIPO (PCT)
- Prior art keywords
- thread
- loop
- jaw
- hook
- ligated
- Prior art date
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- 230000008569 process Effects 0.000 description 12
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/062—Needle manipulators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0469—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0469—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
- A61B2017/047—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery having at least one proximally pointing needle located at the distal end of the instrument, e.g. for suturing trocar puncture wounds starting from inside the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0469—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
- A61B2017/0474—Knot pushers
Definitions
- the present invention relates to a ligating device capable of ligating a thread, and more particularly to a ligating device capable of stably forming a thread loop prior to ligation.
- a suturing device has been proposed that can suture the entire sutured part of the sutured object using thread without using metal staples when suturing the sutured object in the field of biomedical surgery.
- the suturing device proposed in Patent Document 1 is one of them.
- the suturing device proposed in Patent Document 1 includes a needle that holds a first thread and is capable of reciprocating in a predetermined direction, a holding part that holds a second thread, and a reciprocating direction of the needle as an axis.
- a shuttle having a first hook-shaped end portion and a second hook-shaped end portion provided on both sides in both directions from the holding portion and capable of rotating in both directions about an axis along which the needle reciprocates; including.
- the shuttle has a first hook-shaped end portion and a second hook-shaped end portion provided on both sides in both directions from the holding portion, and the needle moves reciprocatingly. Since it is possible to rotate in both directions around the axis in the direction of rotation, the second yarn held by the holding portion and the second yarn held by the holding portion are caused to alternately pass through the holding portion from both directions with respect to the first yarn. The first yarn and the first yarn are made to pass alternately from both directions. Therefore, a seam or a knot can be easily and reliably formed by a mechanical action based on a simple operation.
- the shape of the loop may be deformed if it is affected by, for example, the surface tension of bodily fluids or the weight attached to the body. It was stable and could interfere with the reliable formation of seams or knots.
- the present invention has been made against the background of the above circumstances, and its object is to provide a ligating device capable of stably forming a loop of thread when ligating the thread.
- the gist of the ligating device of the present invention is as follows: (a) a holding part that has a thread hooking part for hooking a thread on the tip part, and holds the thread by hooking the thread on the thread hooking part; (b) a loop forming portion for forming a loop of the yarn in a fixed state; (c) an arranging portion for arranging the yarn hooking portion on which the yarn is hooked at a specific position; and (d) the loop is formed, and gripping the yarn while the yarn hooking portion on which the yarn is hooked is positioned at the specific position. (e) the thread gripped by the first thread hook passes through the inside of the loop, thereby tying the thread.
- the first thread hook moves inside the loop, and the thread is hung. gripping the yarn in a state where the yarn hooking portion is arranged at the specific position, and the yarn gripped by the first yarn hook passes through the inside of the loop; is ligated.
- the loop is formed in a state of being fixed by the loop forming portion, so that the loop is stably formed without being affected by the surface tension of the body fluid, the weight of the attached body fluid, or the like.
- the thread can be ligated stably.
- FIG. 1 is a perspective view from diagonally above showing a ligating device according to an embodiment of the present invention
- FIG. FIG. 2 is a perspective view of the ligating device of FIG. 1 as seen obliquely from below;
- 2 is a front view of the ligating device of FIG. 1;
- FIG. 2 is a plan view of the ligating device of FIG. 1;
- FIG. 2 is a view showing a distal end face of the ligating device of FIG. 1;
- FIG. 2 is a view showing a proximal end view of the ligating device of FIG. 1;
- FIG. FIG. 5 is a sectional view taken along the line AA of FIG. 4;
- 4 is a sectional view taken along the line BB of FIG. 3;
- FIG. 4 is a sectional view taken along the line CC of FIG. 3;
- FIG. 2 is an enlarged view showing a state in which the distal end portion of the ligating device of FIG. 1 is open;
- FIG. FIG. 2 is a perspective view showing a curved needle used in the ligating device of FIG. 1;
- FIG. 2 is a perspective view showing a main part of a knot pusher used in the ligation device of FIG. 1;
- FIG. 13 is a cross-sectional view showing a main part of the knot pusher of FIG. 12;
- FIG. 2 is a perspective view showing an outer cylinder that constitutes a first thread hook used in the ligating device of FIG. 1;
- FIG. 15 is a diagram showing a grasping operation member housed in the outer cylinder of FIG.
- FIG. 16 is a diagram showing a half-gripped state of the first thread hook composed of the outer cylinder of FIG. 14 and the gripping operation member of FIG. 15;
- FIG. 16 is a view for explaining the complete gripping state of the first thread hook composed of the outer cylinder of FIG. 14 and the gripping operation member of FIG. 15;
- FIG. 2 is a partially cutaway view illustrating the configuration of a second thread hook used in the ligating device of FIG. 1;
- FIG. 2 is a perspective view showing a first thread loop shaft and a second thread loop shaft used in the ligating device of FIG. 1 from obliquely above;
- 20 is a perspective view showing the first yarn loop shaft and the second yarn loop shaft of FIG. 19 from diagonally below;
- FIG. 21 is a view showing the state before the rotation operation of the second thread loop shaft shown in FIGS. 19 and 20 from the base end side of the ligating device of FIG. 1; 21. It is a figure which shows the state after 1/4 rotation operation from the 2nd thread loop axis
- FIG. 22 is a view from the proximal side of the ligating device of FIG. 1 showing a state after a 3/4 turn from the second thread loop shaft shown in FIG. 21; FIG.
- FIG. 2 is a perspective view showing a suture presser used in the ligating device of FIG. 1;
- Figure 2 shows the distal end of the ligating device of Figure 1 in an open state;
- Fig. 2 shows a grasping preparation step in which the distal end portion of the ligating device of Fig. 1 grasps an object to be ligated.
- a loop forming step in which the first thread loop shaft and the second thread loop shaft are rotated to form the first thread loop and the second thread loop fixedly; It is a figure which shows the needle puncture process to carry out.
- the first thread hook moves inside the first thread loop and the second thread loop to the tip side of the ligating device and grips the thread protruding from the object to be ligated together with the curved needle.
- the first thread hook retreats so that the thread gripped by the first thread hook is caused to pass inside the first thread loop and the second thread loop by the first hook moved to the proximal end side of the ligating device. and a cutting step in which the curved needle is further projected and the yarn is cut by the first cutter. 1.
- FIG. 32 is a view showing the first half of the first thread loop moving step in which the first thread loop is moved toward the object to be ligated by pulling the first portion of the thread by the first thread hook in the state of FIG. 31; .
- FIG. 32 is a diagram showing the second half of the first thread loop moving step in which the first thread loop reaches the object to be ligated by pulling the first portion of the thread by the first thread hook in the state of FIG.
- FIG. 31 34 is a plan view showing the relationship between the second yarn loop and the knot pusher that pushes it in the state shown in FIG. 33;
- FIG. FIG. 10 is a diagram showing a state in which the knot pusher is in contact with the thread presser while pushing the second thread loop during the second thread loop moving step;
- FIG. 10 is a diagram showing a state in which the knot pusher is further moved and the thread presser is rotated about the fourth rotation axis during the second thread loop moving step;
- Figure 37 is a longitudinal sectional view showing the state of Figure 36 during the second yarn loop moving step;
- FIG. 10 is a diagram showing a state in which the knot pusher has moved the second thread loop to the object to be ligated during the second thread loop moving step;
- FIG. 10 is a view showing the configuration of a knot formed by moving the second thread loop to the body to be ligated by the knot pusher, with the thread untied.
- Figure 40 shows the knot of Figure 39 in the form of a man's knot;
- FIG. 10 is a diagram showing a ligated body release step of separating the second jaw from the first jaw and cutting between the knot and the first thread hook and the second thread hook to release the ligated body.
- FIG. 11 shows a state in which the second thread hook has been moved to the distal side of the ligating device to grip the end of the thread protruding from the second gripping surface of the second jaw during the second thread hook gripping step;
- FIG. 11 is a diagram illustrating a state in which a wire loop protrudes from the tip of the second thread hook during the process of gripping the second thread hook;
- FIG. 10 is a diagram showing a state in which the end of the thread protruding from the second gripping surface of the second jaw is gripped by the second thread hook during the second thread hook gripping step;
- FIG. 10 is a diagram showing a state in which the second thread hook gripping the end of the thread protruding from the second gripping surface of the second jaw is moved to the proximal end side of the ligating device;
- FIG. 12 is a perspective view showing another embodiment of the curved needle of FIG. 11;
- FIG. 12 is a perspective view showing another embodiment of the curved needle of FIG. 11;
- Figure 13 shows another embodiment of the knot pusher of Figure 12;
- a ligating device 10 As shown in FIGS. 1 to 9, a ligating device 10 according to one embodiment of the present invention has a longitudinal shape as a whole, and grips an object 30 (see FIG. 26, etc.) by opening and closing the distal end. By doing so, it is possible to form a knot or seam in the body 30 to be ligated.
- the ligating device 10 is also a suturing device for the body 30 to be ligated.
- the direction perpendicular to the longitudinal direction x of the ligation device 10 and parallel to the opening surface of the distal end portion is defined as the height direction z
- the direction perpendicular to the longitudinal direction x and the height direction z is defined as the direction z. Let the width direction be y.
- the ligation device 10 includes a main body 14 having a first jaw 12 on the lower side of the distal end, and six first fastening screws 16 on both side surfaces on the base side of the main body 14 so as to cover the bottom surface, which is one side on the base side of the main body 14 .
- 22 and a rotary shaft portion 26 detachably received in a concave bearing surface 24 formed in the central portion of the main body 14 in the longitudinal direction x, and can be rotated toward and away from the first jaw portion 12 .
- a second jaw 28 rotatable about a shaft 26 .
- a first gripping protrusion 12a and a second gripping protrusion 28a are provided at the distal end portions of the first jaw 12 and the second jaw 28 so as to approach each other in the height direction z. are formed respectively.
- the first gripping projection 12a and the second gripping projection 28a have a first gripping surface 12b and a second gripping surface 28b facing each other.
- the first jaw 12 and the second jaw 28 are located between the object to be ligated.
- a space is formed to prevent contact with 30 .
- the object to be sutured that is, the object to be ligated 30, which is at least part of a living body such as a living tissue or blood vessel, is gripped by the first gripping surface 12b and the second gripping surface 28b.
- the (minimum) distance La between the first gripping projection 12a and the second gripping projection 28a is smaller than the distance Lb between the base of the first jaw 12 and the base of the second jaw 28 (La ⁇ Lb) is set.
- the distal end of the second jaw 28 is formed with an arcuate needle housing hole 32, one end of which is open to the center of the second gripping surface 28b.
- An arc-shaped curved needle 34 functioning as a sewing needle is movably accommodated in the needle accommodation hole 32 .
- the curved needle 34 corresponds to a holding portion that holds the thread L (see FIGS. 8 and 26) by hooking the thread L (see FIGS. 8 and 26) through a needle hole 38 (see FIG. 11) that functions as a thread hooking portion.
- the curved needle 34 has a sharp pointed end 34a and a proximal end 34b connected to the needle operating member 36 of FIG. 7 for driving and operating the curved needle 34.
- the pointed end 34a is provided.
- a concave portion 40 is formed adjacent to the needle hole 38 inside the curved needle 34 .
- An engagement protrusion 44 is formed on the base end portion 34b to engage with an engagement hole 42 formed in the distal end portion of the needle operating member 36, as shown in FIG.
- the needle operating member 36 is a flexible member constructed of, for example, a leaf spring material cut into a tape of a constant width, and a needle operating member formed within the second jaw 28. It protrudes rearward from the rear end surface of the ligation device 10 through the member guide hole 46 and the needle operation member guide hole 48 formed in the second cover member 22 .
- the needle operating member 36 corresponds to a placement portion that places a thread hooking portion (needle hole 38) on which the thread L is hooked at a specific position, that is, a position where the curved needle 34 protrudes from the body 30 to be ligated by puncturing.
- a slot 50 is formed in the central portion of the first jaw 12 in the width direction y, which is cut from the tip along the longitudinal direction x.
- a curved needle 34 protruding most from the second gripping surface 28b (see FIG. 7) of the second jaw 28 when the second jaw 28 is closed.
- a first cutter 51 is provided that protrudes from the object to be ligated 30 together with the needle hole 38 (see FIG. 11) of the curved needle 34 and cuts the thread L pulled out by the first thread hook 62 .
- a sector 52 and a second cutter 54 each formed of a sector gear are fixed to the base end of the second jaw 28 .
- a rack 56 that meshes with the sector 52 is arranged in the main body 14 so as to be movable in the longitudinal direction x of the main body 14 .
- the rack 56 is connected to an opening/closing operation rod 60 guided by an opening/closing rod guide hole 58 formed in the first lid member 18 in the longitudinal direction x.
- the opening/closing operation rod 60 preferably comprises a cylindrical member abutted against the rear end surface of the rack 56 and a wire (not shown) connected to the rear end surface of the rack 56 shown in FIG. Configured.
- the cylindrical member is exclusively used for manipulating the rack 56 toward the distal end of the ligating device 10 and the wire is exclusively used for manipulating the rack 56 toward the proximal end of the ligating device 10 .
- a first guide hole 64 for guiding the first thread hook 62 is formed in the first lid member 18 in parallel with the longitudinal direction x of the main body 14 .
- a second guide hole 70 for guiding the knot pusher 66 and the second thread hook 68 is formed parallel to the longitudinal direction x in the surface of the main body 14 on the first lid member 18 side.
- the first thread hook 62 loosely grips the thread that has passed through the body 30 to be ligated together with the curved needle 34 while passing inside a first thread loop LP1 and a second thread loop LP2, which will be described later, toward the tip side. It retreats in the direction away from the body 30 to be ligated.
- first thread hook 62 is further retracted in a semi-gripped state in which the thread is loosely gripped even after the break between the curved needle 34 and the first thread hook 62, and the pair of the first thread loop LP1 and the second thread loop LP1 is pulled back. Pass through thread loop LP2. After that, the first thread hook 62 waits in a completely gripped state in which the thread L is strongly gripped, and advances the first thread loop LP1, which will be described later, in the direction of approaching the body 30 to be ligated.
- the knot pusher 66 includes a pressing portion 66a having a large width dimension formed at the front end portion, and a shaft portion formed following the pressing portion 66a and having a width dimension smaller than that of the pressing portion 66a. and a guide groove 66c formed through the upper surface of the pressing portion 66a and the shaft portion 66b in the longitudinal direction x at the center in the width direction y to receive the second thread hook 68.
- a thread hook 68 (see FIG. 7) is guided in the longitudinal direction x of the ligating device 10 .
- the guide groove 66c captures the yarn L when the knot pusher 66 pushes the second yarn loop LP2.
- the knot pusher 66 moves a second thread loop LP2, which will be described later, to approach the first thread loop LP1 when the shaft portion 66b is operated forward, forming a knot M (see FIGS. 39 and 40).
- the second thread hook 68 moves forward to second grip the second jaw 28.
- the thread L protruding from the surface 28b is gripped.
- the second thread hook 68 retreats and engages the thread L with a thread engaging groove 72c of the first thread loop shaft 72 and a thread engaging groove 74c of the second thread loop shaft 74, which will be described later.
- the first thread hook 62 has a longitudinal outer cylinder 62a having an obliquely cut tip, and is slidable in the outer cylinder 62a in the longitudinal direction x and in the rotational direction about its own axis. and a grasping operation member 62b shown in FIG. 15 inserted therein.
- the gripping operation member 62b is made of a single wire rod, and has a spring portion 62c at its tip that can be exposed from the tip opening of the outer cylinder 62a.
- the spring portion 62c includes a close contact spring portion 62d spirally wound in close contact with each other, and a close contact spring portion 62d followed by the close contact spring portion 62d and then separated from each other and wound with a reverse lead bent at its tip. and a locking spring portion 62e configured by a spring with a return.
- FIG. 16 shows a state in which the first thread hook 62 is half-grasped.
- the spring portion 62c is pulled into the outer cylinder 62a with a part of the locking spring portion 62e that locks the thread L exposed from the end face of the outer cylinder 62a.
- This half-grasped state is a state in which the first thread hook 62 loosely hooks the thread L, and the thread L can slide under a predetermined tension or more.
- FIG. 17 shows the state in which the first thread hook 62 is completely gripped.
- the entire spring portion 62c is pulled into the outer cylinder 62a while the thread L is held by the tight contact spring portion 62d.
- This completely grasped state is a state in which the first thread hook 62 strongly hooks the thread L and the thread L cannot slip even if a predetermined tension or more is applied.
- the second thread hook 68 includes a longitudinal outer cylinder 68a and a wire 68b inserted into the outer cylinder 68a so as to be slidable in the longitudinal direction x.
- the wire 68b has a wire loop 68c at its tip into which the thread L can be inserted.
- the wire loop 68c is exposed from the outer cylinder 68a as shown in FIG. 41 to be described later, and is opened by elastic return. .
- the thread L pulled from the needle eye 38 of the curved needle 34 by the second thread hook 68 is A loop forming part 71 is provided for forming a plurality of loops (in this embodiment a pair of first yarn loop LP1 and second yarn loop LP2) in a fixed state.
- the loop forming section 71 includes a first yarn loop shaft 72 and a second yarn loop shaft 74, and a first gear 76 and a second gear 78 detailed in FIGS. 13 and 14.
- the main body 14 is formed with a first bearing hole 80 and a second bearing hole 82 that are spaced apart in the longitudinal direction x of the ligating device 10 and parallel to the height direction z.
- the first yarn loop shaft 72 and the second yarn loop shaft 74 are fitted in the first bearing hole 80 and the second bearing hole 82 and are spaced apart in the longitudinal direction x and parallel to the height direction z.
- the first gear 76 and the second gear 78 are fitted so that the first yarn loop shaft 72 and the second yarn loop shaft 74 cannot rotate relative to each other and can move in the directions of the first rotation axis C1 and the second rotation axis C2. there is The first gear 76 and the second gear 78 mesh with each other while being supported by the main body 14 so as not to move in the directions of the first rotation axis C1 and the second rotation axis C2.
- the first gear 76 and the second gear 78 are examples of driving rotors.
- the first yarn loop shaft 72 and the second yarn loop shaft 74 are examples of rotation shafts of the loop forming section 71 .
- a pair of flat surfaces 72a and a second flat surface 72a are formed parallel to each other in the first rotation axis C1 direction.
- a pair of planes 74a formed parallel to each other in the direction of the rotation axis C2 are formed long in the height direction z.
- the first gear 76 and the second gear 78 are formed with a fitting hole 76 a and a fitting hole 78 a similar in cross-sectional shape to the first thread loop shaft 72 and the second thread loop shaft 74 .
- the first thread loop shaft 72 and the second thread loop shaft 74 are movable in the first rotation axis C1 direction into the fitting hole 76a of the first gear 76 and the fitting hole 78a of the second gear 78, and They are fitted so as to be movable in the direction of the rotation axis C2.
- Tapered surfaces 72e and 74e having a smaller diameter toward the ends are provided at the ends of the first yarn loop shaft 72 and the second yarn loop shaft 74 on the side of the first lid member 18, that is, on the lower side in FIGS. formed.
- the end face of the first thread loop shaft 72 on the side of the first lid member 18 is provided with a hook groove 72b having a U-shaped cross section and penetrating in a direction perpendicular to the first rotation axis C1 for inserting the first thread hook 62 therethrough. , and a thread engaging groove 72c which penetrates in a direction perpendicular to the first rotation axis C1 and perpendicular to the penetrating direction of the hook groove 72b and which is shallower than the hook groove 72b. prepared for.
- the hook groove 72b and the thread engagement groove 72c are cut in the direction of the first rotation axis C1 from the end face of the first thread loop shaft 72 on the first lid member 18 side, and the depth of cut of the hook groove 72b is the same as that of the thread. It is larger than the cutting depth of the engagement groove 72c.
- a pair of spiral cam grooves 80a are formed on the inner peripheral surface of the first bearing hole 80.
- a pair of cam protrusions 72d respectively fitted in the pair of spiral cam grooves 80a protrude in opposite directions from the end of the flat surface 72a of the first thread loop shaft 72 on the second lid member 22 side.
- the pair of cam projections 72d function as cam followers that rotate along the spiral cam groove 80a.
- the first yarn loop shaft 72 moves toward the first lid member 18 while rotating about the first rotation axis C1. In this way, when the first thread loop shaft 72 is rotated 3/4, the outer peripheral surface of the first thread loop shaft 72 is pulled from the needle eye 38 of the curved needle 34 by the second thread hook 68.
- the thread L is wound to form a fixed first thread loop LP1 (see FIG. 24 described later).
- the second thread loop shaft 74 includes a hook groove 74b, a thread engagement groove 74c, and a spiral cam groove 82a formed on the inner peripheral surface of the second bearing hole 82. and a pair of cam projections 74d that are fitted into the.
- a pair of spiral cam grooves 82a are formed on the inner peripheral surface of the second bearing hole 82 in a spiral shape opposite to the spiral cam groove 80a. It is The pair of cam projections 74d function as cam followers that rotate in the opposite direction to the pair of cam projections 72d along the spiral cam groove 82a.
- FIG. 21 shows the state before the rotation of the second gear 78
- FIG. 22 shows the state where the second gear 78 has rotated 1/4 from the state shown in FIG. 21
- FIG. 24 shows a state in which the second gear 78 has rotated 3/4 from the state shown in FIG.
- An operation gear 84 meshing with the second gear 78 is provided on the main body 14 so as to be rotatable about a third axis C3 parallel to the first rotation axis C1 and the second rotation axis C2 while meshing with the second gear 78. It is A portion of the outer peripheral portion of the operation gear 84 is exposed through a window 86 (see FIGS. 1 and 3) provided on the side surface of the main body 14 and is operable. Thereby, the overlap of the yarn L of the first yarn loop LP1 is reversed from the overlap of the yarn L of the second yarn loop LP2.
- FIG. 21 shows a state before the second yarn loop shaft 74 is rotated, in which the second yarn loop shaft 74 is positioned on the side of the second lid member 22 (upper side along the height direction Z in FIG. 21). It is a figure which shows. 21, the thread L in the fourth thread groove 100 of the main body 14 is passed through the thread engaging groove 72c of the second thread loop shaft 74.
- FIG. 21 shows a state before the second yarn loop shaft 74 is rotated, in which the second yarn loop shaft 74 is positioned on the side of the second lid member 22 (upper side along the height direction Z in FIG. 21).
- 24 is a diagram showing a state after the rotation operation of the second thread loop shaft 74, in which the second thread loop shaft 74 is positioned on the first lid member 18 side.
- the cam projection 74d receives thrust from the spiral cam groove 82a toward the first lid member 18 and moves toward the first lid member 18 while the second thread loop shaft 74 rotates around the second rotation axis C2.
- 2 shows a state in which the first cover member 18 has been rotated 3/4 clockwise.
- the yarn L is wound around the outer peripheral surface of the second yarn loop shaft 74 to form the second yarn loop LP2.
- the first yarn loop shaft 72 is rotated 3/4 counterclockwise around the first rotation axis C1 toward the first lid member 18, but otherwise is rotated in the second direction.
- the first thread loop LP1 is formed with the thread L wound around the outer peripheral surface of the first thread loop shaft 72, as shown in FIGS.
- a pair of brackets 90 that rotatably support a bobbin 88 (an example of a yarn supply unit) around which the yarn L is wound for supplying the yarn L are protruded from the base end face of the main body 14 .
- a resistance member 92 made of an elastic member such as synthetic rubber or a spring is interposed in order to impart rotational resistance to the bobbin 88. As shown in FIG. The resistance member 92 applies a predetermined tension to the thread L drawn from the bobbin 88 to prevent slackness.
- the first thread groove 94 is formed on the outer surface of the second lid member 22 opposite to the main body 14 side, and the second thread groove 96 is formed.
- a third thread groove 98 is formed on the outer surface of the second jaw portion 28, and a fourth thread groove 100 is formed on the front end surface of the second jaw portion 28, and a fourth thread groove 100 is formed on the opposite surface of the main body 14 on the side of the first lid member 18, in this order.
- the thread L pulled out from the bobbin 88 passes through the first thread groove 94 , the second thread groove 96 and the third thread groove 98 in order and is guided to the needle eye 38 of the curved needle 34 .
- the thread L that has passed through the needle eye 38 and is pulled by the second thread hook 68 is positioned within the fourth thread groove 100 .
- the fourth thread groove 100 is formed on the wall of the second guide hole 70 on the side of the second cover member 22, for example, in the center of the upper wall in the width direction y in FIG. It is formed with a rectangular cross section smaller than the height of 70 .
- the yarn presser 102 is parallel to the first rotation axis C1 and the second rotation axis C2. It is rotatably provided around a fourth axis C4.
- the thread presser 102 includes a pair of shaft portions 102a projecting in the direction of the fourth axis C4, and a relatively long thread presser portion 102b projecting from the shaft portion 102a in a direction orthogonal to the fourth axis C4.
- the thread presser portion protrudes from the shaft portion 102a so as to form an angle of about 90 degrees about the fourth axis C4 with respect to the thread presser portion 102b. and an engaging projection 102d shorter than 102b.
- the pressing part 66a of the knot pusher 66 pushes the engaging protrusion 102d, causing the thread presser 102 to move in the longitudinal direction of the thread presser 102b. It is rotated until it is parallel to the width direction y. At this rotational position, the thread pressing portion 102b presses the thread L in the fourth thread groove 100. As shown in FIG.
- FIG. 1 The ligating operation process of the ligating device 10 configured as described above will be described below with reference to FIGS. 26 to 45.
- FIG. 1 The ligating operation process of the ligating device 10 configured as described above will be described below with reference to FIGS. 26 to 45.
- FIG. 1 The ligating operation process of the ligating device 10 configured as described above will be described below with reference to FIGS. 26 to 45.
- FIG. 1 The ligating operation process of the ligating device 10 configured as described above will be described below with reference to FIGS. 26 to 45.
- FIG. 26 shows a gripping preparation step before the second jaw 28 of the ligating device 10 is separated from the first jaw 12 to grip the body 30 to be ligated.
- the thread L is in the initial state.
- a thread L unwound from a bobbin 88 is guided by a thread groove 94, a thread groove 96 and a thread groove 98, passes through the needle hole 38 of the curved needle 34 housed in the needle housing hole 32, and passes through the thread groove 100. guided by.
- the end of the thread L guided by the thread groove 100 is gripped by the second thread hook 68 .
- the opening/closing operation rod 60 is operated toward the proximal side of the needle operation member 36 with the space between the second jaw 28 and the first jaw 12 opened.
- the second jaw 28 of the ligating device 10 is brought closer to the first jaw 12 by manipulating the needle operating member 36 toward the distal side, so that the second jaw 28 and the first jaw 12 are closed.
- a body 30 to be ligated is gripped between the jaws 12 .
- FIG. 27 shows the step of grasping the body 30 to be ligated.
- FIG. 28 shows this loop formation process.
- FIG. 28 shows a needle puncturing step in which the tip of the curved needle 34 is passed through the body 30 to be ligated together with the thread L.
- two straight threads L arranged between the needle eye 38 of the curved needle 34 and the position of the first thread loop LP1, and the positions of the needle eye 38 and the first thread loop LP1.
- the curved needle 34 is positioned at the specific position so that at least a portion of the body 30 to be ligated is positioned within the first planar space SP1 formed by the virtual straight line connecting the .
- the outer cylinder 62a of the first thread hook 62 is moved toward the distal end of the ligating device 10, so that the outer cylinder 62a of the first thread hook 62 moves between the second thread loop LP2 and the first thread loop LP1.
- the thread L which is separated by a gap S from the concave portion 40 formed at the tip of the curved needle 34, is caused to reach through the inner side.
- the gripping operation member 62b is rotated by a predetermined amount with respect to the outer cylinder 62a, so that the thread L separated from the concave portion 40 by the gap S is loosely gripped by the first thread hook 62. be done.
- FIG. 29 shows a first thread hook gripping step in which the first thread hook 62 grips the thread L, which is held at the tip of the curved needle 34 through the insides of the second thread loop LP2 and the first thread loop LP1.
- the first line surrounded by imaginary straight lines connecting the needle eye 38 of the curved needle 34, the position of the first thread loop LP1, and the position where the first thread hook grips the thread L, respectively.
- the position at which the first thread loop LP1 grips the thread L is set so that at least part of the body 30 to be ligated is not positioned within the two-plane space SP2.
- the curved needle 34 is pulled to the second gripping surface 28b of the second jaw 28 until the thread L between the needle hole 38 of the curved needle 34 and the tip of the first thread hook 62 does not come into contact with the first cutter 51.
- the first thread hook 62 is operated to move toward the proximal end of the ligating device 10 while being operated to be pulled inward.
- the thread L is loosely gripped by the first thread hook 62 in a semi-gripped state as shown in FIG.
- the gripping operation member 62b of the first thread hook 62 is further rotated to grip the thread L in a semi-gripped state. be done. Thereafter, when the yarn L is passed through the first yarn loop LP1 and the second yarn loop LP2, the yarn L is strongly gripped in a completely gripped state by the first yarn hook 62 as shown in FIG. Next, in this state, the curved needle 34 is further protruded from the second gripping surface 28b of the second jaw 28. As shown in FIG. As a result, the thread L between the needle eye 38 of the curved needle 34 and the tip of the first thread hook 62 is cut by the first cutter 51 .
- FIG. 30 thus shows the retraction process of the first thread hook 62 in which the first thread hook 62 pulls the thread L through the inside of the first thread loop LP1 and the second thread loop LP2, and the cutting process in which the thread L is cut. there is In FIG.
- the threads held by the first thread hook 62 on the first jaw 12 side of the body 30 to be ligated are the first thread of the thread L.
- the thread held by the second thread hook 68 on the second jaw 28 side of the ligated body 30 is referred to as the second portion L2 of the thread L. As shown in FIG.
- the length of the thread L protruding from the needle hole 38 after cutting is equal to that of the needle hole 38 of the curved needle 34 so that a sufficient length of the thread L protruding from the second gripping surface 28b after cutting can be obtained. It is arranged at a position longer than the distance from the tip of the curved needle 34 and shorter than the maximum opening distance of the first jaw 12 and the second jaw 28 .
- the needle operating member 36 is further manipulated toward the proximal end of the ligating device 10 parallel to the longitudinal direction x so that the curved needle 34 is completely within the needle receiving hole 32 of the second jaw 28. are housed in Also, as shown in FIG. 31, the operation gear 84 is operated in the direction opposite to the arrow in FIG. be moved.
- FIG. 31 shows the needle housing step of housing the curved needle 34 in the needle housing hole 32 . In this state, the first thread loop LP1 and the second thread loop LP2 that have been wound around the first thread loop shaft 72 and the second thread loop shaft 74 are pulled from the thread presser portion 102b of the thread presser 102 with the thread L2 therebetween. The loop shape is favorably maintained by being locked to.
- the knot pusher 66 is operated toward the distal end of the ligating device 10, as shown in FIGS.
- the second thread loop LP2 captured by the knot pusher 66 moves toward the body 30 to be ligated, that is, in the longitudinal direction, while the first thread hook 62 applies tension to the first portion L1 of the thread L. It starts to move in the direction x to approach the first gripping projection 12a.
- the movement of the second thread loop LP2 by the knot pusher 66 is started, as shown in FIG. Since the thread L is held in the thread groove 100, the thread L is prevented from falling off.
- the second thread loop LP2 of the first thread loop LP1 and the second thread loop LP2 on the far side from the body 30 to be ligated is pushed forward. , is moved toward the body 30 to be ligated and brought into contact with the first thread loop LP.
- the threads L passing through the body 30 to be ligated the first portion L1 of the thread L on the first jaw 12 side of the body 30 to be ligated and the thread L on the second jaw 28 side of the body 30 to be ligated are separated.
- a knot M of the thread L is formed by knotting the thread L with the second portion L2 of the thread L being gripped by each thread hook 62, 68, as shown in FIG. Figures 34 to 38 show the second thread loop movement step. 39 shows an enlarged view of the knot M of FIG. 38, and the knot M of FIG. 40 is a form of a man's knot in which the first portion L1 of the thread L and the second portion L2 of the thread L are further tightened by applying equal tension. It is a figure which shows.
- FIG. 41 shows a ligated body releasing step of releasing the ligated body 30 ligated with a thread from the ligating device 10 .
- the second jaw 28 is rotated until it is parallel to the first jaw 12 and the first gripping surface 12b and the second gripping surface 28b are separated by a small distance. is brought close to the first jaw 12 .
- the second thread hook 68 is operated to move toward the tip of the ligating device 10 so that the tip of the second thread hook 68 approaches the end of the thread L. As shown in FIG. 42
- the operating wire 68b is operated toward the distal end of the ligating device 10, so that the wire loop 68c projecting from the distal end of the second thread hook 68 is placed on the first gripping surface 12b of the first jaw 12, It is placed in a state of being expanded to a width larger than the width of the slot 50 .
- the second jaw 28 is rotated so that the first gripping surface 12b and the second gripping surface 28b approach each other until they are substantially adjusted.
- a new end of the thread L connected to the bobbin 88 and protruding from the second gripping surface 28b is inserted into the wire loop 68c protruding from the tip of the second thread hook 68.
- FIG. FIG. 43 shows this state.
- the operating wire 68b is operated toward the proximal end of the ligation device 10, and the wire loop 68c is pulled into the outer cylinder 68a.
- the end of the thread L protruding from the second gripping surface 28b of the second jaw 28 is gripped by the tip of the second thread hook 68, as shown in FIG. 42 to 44 show the second thread hook gripping process in which the second thread hook 68 grips the end of the thread L protruding from the second gripping surface 28b.
- FIG. 45 shows a ligation end step in which one ligation operation is completed.
- the first thread hook 62 is pulled while the first thread loop LP1 and the second thread loop LP2 are formed in a fixed state by the loop forming section 71. , moves inside the first thread loop LP1 and the second thread loop LP2. Furthermore, the first thread hook 62 grips the thread L in a state where the needle eye (thread hooking portion) 38 on which the thread L is hooked is arranged at a specific position protruding from the body 30 to be ligated. Then, the thread L gripped by the first thread hook 62 passes through the inside of the first thread loop LP1 and the second thread loop LP2, thereby tying the thread L.
- first thread loop LP1 and the second thread loop LP2 are formed in a fixed state by the loop forming portion 71, the first thread loop LP1 and the second thread loop LP1 are not affected by, for example, the surface tension of bodily fluids and the weight attached thereto.
- a two-thread loop LP2 is reliably formed.
- the ligature of the thread L can be reliably performed by reliably forming the first thread loop LP1 and the second thread loop LP2.
- the arranging section has a needle hole (thread hooking section) to position at least a part of the body 30 to be ligated inside the virtual first planar space SP1.
- 38 is placed at the specified position.
- the first planar space SP1 includes the thread L arranged between the needle eye (thread hooking portion) 38 and the position of the thread loop via the body 30 to be tied, and the space between the needle eye (thread hooking portion) 38 and the thread loop. It consists of a virtual straight line connecting the positions.
- the first thread hook 62 grips the thread L so as not to position the body 30 to be connected inside the virtual second planar space SP2.
- the second plane space SP2 is formed by connecting the needle eye (thread hooking portion) 38, the position of the thread loop, and the gripping position where the first thread hook 62 grips the thread L with imaginary straight lines. . Then, the thread L is ligated in a state in which the thread L is arranged around at least a part of the body 30 to be ligated. As a result, the thread L can be ligated to the body 30 to be ligated more reliably.
- the ligating device 10 is provided with the second thread hook 68 and the first cutter 51 .
- the second thread hook 68 grips the end of the thread L.
- the first end is the end where the thread L passes through the needle eye (thread hooking portion) 38 .
- the first cutter 51 is arranged at a specific position where the needle eye (thread hooking portion) 38 protrudes from the body 30 to be ligated while the first end of the thread L is gripped by the second thread hook 68. After that, the yarn L is cut into two yarns L.
- One of the threads L separated by the cutting by the first cutter 51 is ligated while being gripped by each of the thread hooks 62 and 68 .
- one end of the one thread L is gripped by the first thread hook 62 and the other end of the one thread L is gripped by the second thread hook 68, and the one thread L is knotted. be.
- the second thread hook 68 grips the end of the other thread L among the threads L separated by cutting the first cutter 51 instead of the other end of the one thread L after the one thread is ligated. do.
- the other end of the thread L continues to be hooked on the needle eye (thread hooking portion) 38 and is a new end protruding through the needle eye 38 from the second gripping surface 28b.
- the second thread hook 68 has a wire loop that grips the new end of the thread L protruding through the eye 38 of the needle.
- the thread L can be more reliably grasped, and preparations such as rearrangement of the thread L for the next suturing or ligation can be easily performed.
- the loop forming portion 71 has a thread groove, a hook groove, and a rotating shaft.
- the thread groove is a groove through which the thread L is passed.
- the hook groove is a groove for passing the first thread hook 62, and is formed in a direction orthogonal to the thread groove.
- the rotating shaft has a rotating axis extending in a direction crossing the longitudinal direction of the first thread hook 62 . Then, the loop forming part 71 rotates around the rotation axis while the thread L is passed through the thread groove, so that a loop is formed in the thread while the thread L is wound around the outer peripheral surface of the rotating shaft. This allows the yarn loop to be formed more stably. In addition, since the loop is stably formed, the thread can be ligated stably.
- a plurality of loop forming portions 71 are provided. Further, the rotation axes of the plurality of loop forming portions 71 are parallel to each other. Further, the rotation direction of any one of the plurality of loop formation portions 71 is opposite to the rotation direction of the other loop formation portions of the plurality of loop formation portions. As a result, the knot M of the thread L that ligates the body 30 to be ligated can be made stronger.
- the loop forming part 71 moves in the rotation axis direction while rotating around the rotation axis.
- the loop of the thread L can be formed into a three-dimensional shape, making it easier to pass the thread L through the inside of the loop.
- a plurality of loop forming portions 71 are provided, and the thread presser 102 is provided between adjacent loop forming portions 71 .
- the thread presser 102 presses the thread stretched between the loop forming sections 71 at a position in the rotational axis direction before the loop forming section 71 moves toward the loop forming side in the rotational axis direction.
- the yarn presser 102 maintains the position of the yarn L in the direction of the rotation axis regardless of the movement of the loop forming part 71 toward the loop formation side in the direction of the rotation axis. As a result, the thread L is prevented from falling out of the thread groove, and the loop of the thread L can be formed more reliably.
- the knot pusher 66 is provided in the ligation device 10 .
- the knot pusher 66 moves the loop of the yarn L formed by the loop forming section 71 in the direction from the loop forming section 71 toward the body 30 to be ligated.
- the knot pusher 66 has a guide groove 66c for catching the yarn L. As a result, the ligating position of the thread L can be moved to a position adjacent to the body 30 to be ligated.
- the thread presser 102 rotates in relation to the movement of the knot pusher 66 .
- the thread L held by the thread presser 102 is released, and the ligating position of the thread L can be easily moved to a position adjacent to the body 30 to be ligated.
- the knot pusher 66 catches the loop and pushes it toward the object 30 to be ligated while tension is applied to the thread L passing inside the loop.
- the ligating position of the thread L can be reliably moved to a position adjacent to the body 30 to be ligated.
- a plurality of loops of the thread L are formed, and the first thread hook 62 pulls the thread L to pull the loop closest to the body 30 to be ligated among the plurality of loops.
- the loops other than the loop closest to the body 30 to be ligated are moved to a position adjacent to the body 30 to be ligated by the knot pusher 66 .
- the holding part is the arc-shaped curved needle 34 that punctures the body 30 to be ligated together with the thread L in order to suture the body 30 to be ligated.
- the body 30 to be ligated can also be sutured.
- the recess 40 is formed in the distal end portion of the holding portion. Therefore, interference between the holding portion and the first thread hook 62 can be avoided.
- the ligation device 10 is provided with the main body 14 , the first jaw 12 and the second jaw 28 .
- Body 14 accommodates loop forming portion 71 .
- First jaw 12 and second jaw 28 have a longitudinal shape that protrudes from body 14 .
- the second jaw 28 is provided so as to be rotatable with respect to the main body 14 and movable toward and away from the first jaw 12 .
- Each of the first jaw 12 and the second jaw 28 has a gripping protrusion (first gripping protrusion 12a and second gripping protrusion 28a) that protrudes from the distal end portion toward each other and grips the body 30 to be ligated. have.
- first jaw 12 and the second jaw 28 When the first jaw 12 and the second jaw 28 are closed, the first jaw 12 and the second jaw 28 have their respective gripping projections (first gripping projection 12a and second gripping projection 12a). 28a) are accessible. As a result, the thread L can be tied or sutured to the body 30 to be ligated more reliably.
- the ligating device 10 is provided with the main body 14 that accommodates the loop forming portion 71 .
- Body 14 has a bearing bore.
- the loop forming portion 71 is rotatably held in the bearing hole about the rotation axis.
- the loop forming portion 71 includes a driving rotor, a rotating shaft, and a cam follower.
- the drive rotator is provided rotatably about the rotation axis and immovable in the direction of the rotation axis.
- the rotary shaft is fitted to the drive rotator so as to be non-rotatable relative to the drive rotator and movable in the direction of the rotation axis.
- the cam follower radially protrudes from the rotating shaft and engages with a spiral cam groove formed on the inner peripheral surface of the bearing hole.
- the ligation device 10 is provided with the main body 14 , the first jaw 12 , the second jaw 28 , and the first cutter 51 .
- Body 14 accommodates loop forming portion 71 .
- First jaw 12 and second jaw 28 have a longitudinal shape that protrudes from body 14 .
- the second jaw 28 is provided so as to be rotatable with respect to the main body 14 and movable toward and away from the first jaw 12 .
- a first cutter 51 is arranged in the first jaw 12 and cuts the thread L.
- the holding part is arranged in the second jaw part 28 and is arranged so as to be movable toward and away from the first jaw part 12 side.
- the length of the thread L after being cut by the first cutter 51 is longer than the distance between the thread hooking portion of the holding portion and the tip of the holding portion. It is arranged at a position that is shorter than the opening distance of the first jaw 12 and the second jaw 28 . As a result, the yarn L can be cut more reliably by the first cutter 51 .
- the ligation device 10 is provided with the main body 14 , the first jaw 12 , the second jaw 28 , and the second cutter 54 .
- Body 14 accommodates loop forming portion 71 .
- First jaw 12 and second jaw 28 have a longitudinal shape that protrudes from body 14 .
- the second jaw 28 is provided so as to be rotatable with respect to the main body 14 and movable toward and away from the first jaw 12 .
- a second cutter 54 is provided within the main body 14 .
- the second cutter 54 cuts the thread L by opening the second jaw 28 away from the first jaw 12 .
- the body 30 to be ligated can be released from the first jaw 12 and the second jaw 28, and at the same time, the excessive portion of the thread L used for ligation can be cut off from the body 30 to be ligated.
- the first thread hook 62 can be switched between a semi-gripped state that allows the thread L to slide and a fully gripped state that prevents the thread L from sliding. . Thereby, the length of the thread L required for ligation can be freely adjusted.
- the first thread hook 62 grips the thread L in a semi-gripped state until the thread L is passed through the loop after the thread L is gripped. After passing through the loop, the yarn L is gripped in a completely gripped state. As a result, the thread L can be ligated to the body 30 to be ligated more reliably.
- the bobbin (thread supply section) 88 is provided in the ligating device 10 .
- a bobbin 88 supplies the yarn L to the yarn hooking portion.
- the bobbin 88 also has a resistance member 92 that provides resistance to the thread L being supplied. As a result, it is possible to continuously perform ligation or suture for the body 30 to be ligated.
- the ligating device 10 of this embodiment includes a needle 34, a loop forming portion 71, and a first thread hook 62.
- the needle 34 has a thread hooking portion 38 for cutting the thread L at its tip portion, and punctures the body 30 to be ligated.
- the loop forming part 71 forms a loop of the yarn L in a fixed state.
- the first thread hook 62 moves inside the loop of the thread L in a state where the loop is formed, and the thread L passing through the body 30 to be ligated while the body 30 to be ligated is pierced by the needle 34 . grasp the Then, the thread L gripped by the first thread hook 62 passes through the inside of the loop, and the thread L is knotted.
- the thread L passing through the body 30 to be ligated is easily affected by the surface tension of the body fluid, the weight of the attached body fluid, and the like.
- a loop can be formed. Therefore, the loop is stably formed and the thread is stably knotted.
- the ligating device 10 of this embodiment includes a needle 34, a loop forming portion 71, and a first thread hook 62.
- the thread L is passed through the tip portion of the needle 34 to puncture the body 30 to be ligated.
- the loop forming part 71 has a rotating shaft, and forms a loop of the yarn L by rotating the rotating shaft.
- the first thread hook 62 moves toward the needle 34 inside the loop formed by the loop forming section 71 and grips the thread L that has passed through the body 30 to be ligated.
- the first thread hook 62 moves inside the loop while gripping the thread L and returns to the initial position, whereby the thread L is tied.
- the thread L passing through the body 30 to be ligated is easily affected by the surface tension of the body fluid, the weight of the attached body fluid, and the like.
- a loop can be formed. Therefore, the loop is stably formed and the thread is stably knotted.
- the ligating device 10 of the present embodiment includes a holding portion that holds the thread L, a loop forming portion 71 that forms a loop in the thread L, a main body 14 that accommodates the loop forming portion 71, and a second protruding portion protruding from the main body 14. It comprises one jaw 12 and a second jaw 28 .
- a retainer is provided in the second jaw 28 .
- the loop forming portion 71 forms a loop in the yarn L within the main body 14 while the holding portion holds the yarn L.
- a second jaw 28 is rotatably provided on the main body 14 and is movable toward and away from the first jaw 12 . Also, the second jaw 28 grips the body 30 to be ligated with the first jaw 12 .
- the loop of the thread is stably formed without being affected by the surface tension of the bodily fluid, the weight of the attached body fluid, or the like.
- the thread can be ligated stably.
- the loop forming section 71 includes the first thread loop shaft 72 and the second thread loop shaft 74 .
- the first yarn loop shaft 72 rotates about the first rotational axis C1 to form the first yarn loop LP1 on the yarn L within the body 14 .
- the second yarn loop shaft 74 rotates about a second rotation axis C2 parallel to the first rotation axis C1 in a direction opposite to the first yarn loop shaft 72, and forms a second yarn loop LP2 on the yarn L within the main body 14.
- the knot M of the thread L that ligates the body 30 to be ligated can be made stronger.
- the ligating device 10 is provided with the first thread hook 62 .
- the first hook 62 is movable through the inner side of the loop formed by the loop forming part 71 toward the tips of the first jaw 12 and the second jaw 28 that are gripping the body 30 to be ligated. be.
- the first hook 62 grips the thread L held by the holding portion and pulls it into the main body 14 .
- the base of the knot M of the thread L is stably formed without being affected by, for example, the surface tension of the bodily fluid or the weight of the attached body fluid.
- FIG. 46 shows a curved needle 134 of another embodiment that can be used in place of the curved needle 34 of the previous embodiment.
- the curved needle 134 of this embodiment is formed with an engagement groove 136 longitudinally cut from the tip of the needle instead of the needle hole 38 of the curved needle 34 of the previous embodiment, but the rest is the same. be.
- the curved needle 134 of this embodiment when pierced through the body 30 to be ligated, causes the thread L hooked on the engagement groove 136 functioning as a thread hooking portion to be pulled into the curved needle.
- the body 30 to be ligated can be pierced with the tip of the needle 134 .
- FIG. 47 shows a curved needle 144 of another embodiment that can be used in place of the curved needle 34 of the above embodiment.
- the tip of the curved needle 144 instead of the needle hole 38 formed through the curved needle 34 of the previous embodiment in the radial direction of curvature, the tip of the curved needle 144 extends in a direction parallel to the center line of curvature of the curved needle 144 .
- a penetrating needle hole 146 is formed.
- a concave portion 148 is formed on the side surface of the needle tip.
- the curved needle 144 of this embodiment like the curved needle 34 of the previous embodiment, when the body 30 to be ligated is punctured, the thread L hooked on the needle hole 146 functioning as a thread hooking portion is pulled into the curved needle 144 .
- the body 30 to be ligated can be penetrated together with the tip of the needle.
- the needle housing hole 32 shown in FIG. 11 of the above embodiment is formed in a plane including the longitudinal direction x and the height direction z, whereas the needle housing hole for housing the curved needle 144 of this embodiment is formed in a plane including the width direction y and the height direction z.
- FIG. 48 shows a knot pusher 166 of another embodiment that can be used in place of the knot pusher 66 of the previous embodiment.
- the knot pusher 166 of this embodiment passes through the second portion L2 of the thread L and the second thread hook 68 that grips the second portion L2, and is guided by the second guide hole 70 (see FIGS. 6 and 7). It consists of a tubular member that The knot pusher 166 of this embodiment can feed the second thread loop LP2 to the distal end side of the ligating device 10, like the knot pusher 66 described above.
- a ligatable plastic wire is used for the thread L in the above-described embodiment.
- the yarn L is preferably natural yarn twisted from natural plant or animal fibers, synthetic resin yarn composed of a single wire or twisted wire of synthetic fiber, metal yarn composed of a single wire or twisted wire made of metal, natural fiber and composite yarns made of synthetic fibers are used.
- the ligating device 10 of the above-described embodiment has a longitudinal shape with a rectangular cross section, that is, a prismatic shape, it may have a cylindrical shape with a circular cross section.
- the arc-shaped curved needle 34 was used as an example of the needle, but a straight straight needle may be used.
- the loop forming part 71 of the ligating device 10 of the above-described embodiment was equipped with two first yarn loop shafts 72 and second yarn loop forming shafts 74, but a plurality of yarns of three or more It may be provided with a loop axis.
- first thread loop shaft 72 rotates counterclockwise toward the first lid member 18
- second thread loop forming shaft 74 rotates rightward toward the first lid member 18 . Although it rotates around, it may rotate in the opposite direction. In short, the pair of first yarn loop shaft 72 and second yarn loop forming shaft 74 should only rotate in opposite directions.
- the ligating device 10 of the above-described embodiment was equipped with the two first yarn loop shafts 72 and the second yarn loop forming shaft 74, the ligating device 10 is equipped with a plurality of yarn loop shafts of three or more. may be
- the gripping operation of 52 and the gripping operation of the second thread hook 68 may be manual operation or remote operation using an actuator that is electrically driven and controlled.
- a first thread hook retracting step may be performed.
- the first jaw 12 was fixed in a state protruding from the main body 14 in the longitudinal direction. It may be provided so as to be rotatable.
- the first thread hook 62 is made of a flexible member, and a first guide hole 64 for guiding the first thread hook 62 is formed not only in the main body 14 but also in the first jaw 12. , the first thread hook 62 may be moved to the vicinity of the curved needle 34 through the inside of the second thread loop LP2 and the first thread loop LP1.
- the curved needle 34 for puncturing the body 30 to be ligated was used in order to wind the thread L around a part of the body 30 to be ligated.
- the curved needle 34 may not be used to wrap the thread L around the entire body 30 to be ligated.
- a portion of the second gripping surface 28b of the second jaw 28 located on the distal end side of the ligating device 10 and at the center in the width direction y is moved along with the thread groove 98 to the first jaw 28. 12, the proximal side of the ligating device 10 having no protrusions of the second gripping surface 28b, and the first gripping surface 28b.
- the first thread hook 62 grips the portion of the thread L located on the side of the body 30 to be ligated, as shown in FIG. , as shown in FIGS. 30 to 38, the thread L wound around the entire body 30 to be ligated can be ligated.
- the pair of cam projections 72d of the first yarn loop shaft 72 are fitted into the pair of spiral cam grooves 80a, thereby rotating about the first rotation center line C1.
- the pair of cam protrusions 74d of the second yarn loop shaft 74 are fitted into the pair of spiral cam grooves 82a, moving along the direction of the first rotation center line C1, that is, along the height direction z. It was configured to move along the direction of the second rotation center line C2, that is, along the height direction z while rotating around.
- the first yarn loop shaft 72 and the second yarn loop shaft 74 do not necessarily have to move in the first rotation center line C1 direction and the second rotation center line C2 direction, that is, along the height direction z.
- the tip of the first thread hook 62 is cut obliquely. Therefore, by rotating the first thread hook 62 and pushing it toward the tip side of the ligating device 10, the second thread hook 62 can be cut at an angle.
- the yarn L wound around the outer peripheral surfaces of the yarn loop shaft 74 and the first yarn loop shaft 72 are arranged above and below the first yarn hook 62, and as a result, the insides of the second yarn loop LP2 and the first yarn loop LP1 are arranged.
- a first thread hook 62 is threaded.
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Abstract
Description
設定されている。
12:第1顎部
14:本体
18:第1蓋部材
22:第2蓋部材
28:第2顎部
30:被結紮体
34、134、144:曲針(保持部、針)
36:針操作部材(配置部)
38、146:針穴(糸掛け部)
62:第1糸フック
68:第2糸フック
71:ループ形成部
72:第1糸ループ軸
74:第2糸ループ軸
88:ボビン(糸供給部)
102:糸押え
LP1:第1糸ループ(糸のループ)
LP2:第2糸ループ(糸のループ)
L:糸
L1:糸Lの第1部分
L2:糸Lの第2部分
SP1:第1平面空間
SP2:第2平面空間
Claims (15)
- 先端部分に糸を掛けるための糸掛け部を有し、前記糸掛け部に前記糸が掛けられることで前記糸を保持する保持部と、
固定した状態の前記糸のループを形成するループ形成部と、
前記糸が掛けられている前記糸掛け部を特定の位置に配置する配置部と、
前記ループが形成されている状態で前記ループの内側を移動することと、前記糸が掛けられている前記糸掛け部が前記特定の位置に配置されている状態で前記糸を把持することと、を実行する第1糸フックと、を備え、
前記第1糸フックにより把持された前記糸が前記ループの内側を通ることで、前記糸が結紮される、結紮装置。 - 前記配置部は、前記糸掛け部から前記ループの位置までの間に配置される前記糸と、前記糸掛け部と前記ループの位置とを結ぶ仮想的な直線と、で構成される仮想的な第1平面空間の内部に、被結紮体の少なくとも一部を位置させるために、前記糸掛け部を前記特定の位置に配置し、
前記第1糸フックは、前記糸掛け部と前記ループの位置と前記糸を把持するための把持位置とをそれぞれ仮想的な直線で結ぶことで構成される仮想的な第2平面空間の内部に前記被結紮体を位置させないように、前記糸を把持し、
前記糸は、前記被結紮体の少なくとも一部の周囲に糸が配置されている状態で結紮される、請求項1に記載の結紮装置。 - 前記結紮装置は、さらに、
前記糸の端部を把持する第2糸フックと、
前記第2糸フックに前記糸の前記端部が把持されている状態で、前記糸掛け部が前記特定の位置に配置された後、前記糸を二つの糸に切断する第1カッタと、
を備え、
前記第1カッタにて切断される前記二つの糸のうちの一方の糸は、前記第1糸フックに把持されている状態で結紮され、
前記第2糸フックは、前記一方の糸が結紮された後に、前記端部に代えて、前記二つの糸のうちの他方の糸の端部であって、前記糸掛け部に掛けられ続けている新たな端部を把持する、請求項1又は2に記載の結紮装置。 - 前記ループ形成部は、前記糸を通すための糸溝と、前記第1糸フックを通すための前記糸溝に直交する方向のフック溝と、前記第1糸フックの長手方向と交差する方向に伸びる回転軸線を備える回転軸と、を有し、前記糸が前記糸溝に通された状態で前記回転軸線まわりに回転することで前記回転軸の外周面に前記糸を巻き付けた状態で前記ループを形成する、請求項1から3のいずれか一項に記載の結紮装置。
- 前記ループ形成部は複数設けられ、前記複数のループ形成部のそれぞれの前記回転軸線は相互に並行であり、前記複数のループ形成部のうちのいずれかのループ形成部の回転方向は、前記複数のループ形成部のうちの他のループ形成部の回転方向と逆方向である、請求項4に記載の結紮装置。
- 前記結紮装置は、さらに、
前記ループ形成部により形成されたループを、前記ループ形成部から被結紮体に向かう方向に移動させ、結紮位置を前記被結紮体に隣接する位置に配置するために、前記糸を捕捉する溝を有するノットプッシャを備える、請求項1から5のいずれか一項に記載の結紮装置。 - 前記保持部は、前記被結紮体を縫合するために前記糸を伴って前記被結紮体を穿刺する円弧状に曲げられた曲針である、請求項1から6のいずれか一項に記載の結紮装置。
- 前記保持部の前記先端部分には、凹部が形成されている、請求項1から7のいずれか一項に記載の結紮装置。
- 前記結紮装置は、さらに、
前記ループ形成部を収容する本体と、
前記本体から突き出した長手状の第1顎部と、
前記本体に回動可能に設けられ、前記第1顎部に対して接近離隔可能な長手状の第2顎部と、
前記第1顎部および第2顎部の先端部分から互いに接近する方向にそれぞれ突き出して被結紮体を把持する把持凸部と、を備え、
前記第1顎部および前記第2顎部は、前記第1顎部および前記第2顎部が閉じられた状態では、前記把持凸部が接触する、請求項1から8のいずれか一項に記載の結紮装置。 - 前記結紮装置は、さらに、
前記ループ形成部を収容する本体と、
前記本体から突き出した長手状の第1顎部と、
前記本体に回動可能に設けられ、前記第1顎部に対して接近離隔可能な長手状の第2顎部と、
前記第1顎部内に配置され前記糸を切断する第1カッタと、を備え、
前記保持部は、前記第2顎部内に前記第1顎部側へ接近離隔動作可能に配置され、
前記第1顎部および前記第2顎部が閉じられた状態で前記保持部が前記第1顎部側へ動作されることにより、前記糸掛け部に掛けられた糸が前記第1カッタにより切断される、請求項1から8のいずれか一項に記載の結紮装置。 - 前記第1カッタは、切断後の前記糸の長さが、前記保持部の糸掛け部と前記保持部の先端との間の距離よりも長く、前記第1顎部および前記第2顎部の開き距離よりも短くなる位置に、配置されている、請求項10に記載の結紮装置。
- 前記結紮装置は、さらに、
前記ループ形成部を収容する本体と、
前記本体から突き出した長手状の第1顎部と、
前記本体に回動可能に設けられ、前記第1顎部に対して接近離隔可能な長手状の第2顎部と、を備え、
前記第2顎部が前記第1顎部に対して離れる方向に開くことで前記糸を切断する第2カッタが、前記本体内に設けられている、請求項1から8のいずれか一項に記載の結紮装置。 - 前記第1糸フックは、前記糸の摺動を許容する半把持状態と、前記糸の摺動を阻止する完全把持状態とに切り換え可能である、請求項1から12のいずれか一項に記載の結紮装置。
- 前記第1糸フックは、前記糸を把持した後、前記ループに前記糸を通すまでの間は前記半把持状態で前記糸を把持し、前記糸を前記ループに通した後に前記完全把持状態で前記糸を把持する、請求項13に記載の結紮装置。
- 前記結紮装置は、さらに、
前記糸掛け部へ前記糸を供給し、供給される前記糸に抵抗を与える抵抗部材を有する糸供給部を備える、請求項1から14のいずれか一項に記載の結紮装置。
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JPH0654855A (ja) * | 1992-08-05 | 1994-03-01 | Yutaka Takaesu | 内視鏡下手術用持針器、結紮用カートリッジ及びその組合せからなる内視鏡下手術用縫合・結紮装置 |
JP2018029678A (ja) | 2016-08-22 | 2018-03-01 | ブラザー工業株式会社 | 縫合装置 |
WO2019211954A1 (ja) * | 2018-05-01 | 2019-11-07 | ブラザー工業株式会社 | 縫合装置 |
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JPH0654855A (ja) * | 1992-08-05 | 1994-03-01 | Yutaka Takaesu | 内視鏡下手術用持針器、結紮用カートリッジ及びその組合せからなる内視鏡下手術用縫合・結紮装置 |
JP2018029678A (ja) | 2016-08-22 | 2018-03-01 | ブラザー工業株式会社 | 縫合装置 |
WO2019211954A1 (ja) * | 2018-05-01 | 2019-11-07 | ブラザー工業株式会社 | 縫合装置 |
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