JPH08131449A - Suture device - Google Patents

Abstract

PURPOSE: To provide a suture needle holder which allows the universal attachment and detachment of a suture for suture and is capable of suturing the tissues to be sutured backward and forward by providing a suture device with a supporting body fro supporting one end of a suture needle, a supporting body for supporting one end of a sheath tube, an operating member for sliding these supporting bodies on the axial line of the suture needle and an operating member supported by these supporting bodies. CONSTITUTION: The suture needle 1 has a needle tip 2, is curved to an arc shape and is formed with a suture holding means 23 in mid-way of its longitudinal direction. The first supporting body 4 is supported on the other end side of the needle tip 22. The sheath tube 3 has the same axis as the axis of the suture needle 2 and is supported with the second supporting body 41 on the other end side of the needle tip 22. The first supporting body 4 supports the suture needle 2 in a direction orthogonal with the axis of the first supporting 4 on the front end side and the base end side supports the operating member 5. A hollow part to be inserted with an operating means is formed on the side slightly nearer the base end than the intermediate part. The second supporting body 41 supports the sheath tube 3 on the front end side and has a hollow arch member 44 for supporting the first supporting body 4. A leaf spring 43 is installed near the intermediate part and the side slightly nearer the base end than the intermediate part is provided with the operating means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suture instrument which is used for laparotomy and laparoscopic surgery and which is capable of continuous suturing.

[0002]

2. Description of the Related Art In recent years, when performing surgery such as appendicitis or cholecystectomy, laparoscopic surgery may be performed in addition to surgical open surgery. In this laparoscopic surgery, a plurality of communication tubes called trocar tubes are inserted into the abdominal cavity, a small camera for observing the abdominal cavity is inserted into one trocar tube, and a trocar tube is inserted from another trocar tube. ,scissors,
The operation is performed by operating instruments such as forceps and needle holder while watching the monitor.

By the way, when performing suturing during surgery, a suture needle curved in an arc is grasped using a general needle holder. For suturing in this case, the suture needle grasped by the needle holder is pierced into the living tissue, and when the tip is projected from the tissue to be sutured, the needle holder releases the grasped suture needle and is pierced by the tissue to be sutured and projected. A general method is to grasp and pull out the needle tip of the suture needle. Therefore, the tissue to be sutured cannot be sutured by one operation, and it takes time and labor to suture because the suturing needle is changed. Further, since continuous suturing is impossible, it is difficult to suture hemostasis to a large blood vessel.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to allow a suture thread to be freely attached and detached and to reciprocally suture a tissue to be sutured. To provide a container.

[0005]

What achieves such an object is to provide a suture needle having a thread grasping means for grasping a suture thread with a sharp needle tip formed at the distal end, and a suture needle in close contact with the suture needle. A suture needle having a possible outer tube and an operating means for encapsulating and exposing the thread gripping means from the outer tube, the operating means supporting one end of the suturing needle. A second support for supporting one end of the mantle tube, an operating member for sliding the first support or the second support on the axis of the suture needle, and at least the The operation member is supported by either the first support member or the second support member, and the operation axis of the operation member and the axis line of the operation member are parallel to each other. The suture device is such that the thread gripping means is encapsulated and exposed by moving the member in the direction of the operation axis.

The operating member is formed with the same radius of curvature as the suture needle, and is supported by the second support body.
Since the hollow portion provided in the first support body is inserted, when the operation member is rotated, the first support body supported by the operation member moves along the operation member. Slide.

The operating member includes a first fixing portion and a second fixing portion for fixing the first support, the first fixing portion and the second fixing portion. Since the fixing means having the fixing portion operating portion for operating the fixing portion is provided, it is possible to fix the yarn gripping means in a covered and exposed state.

Further, as the suture needle, one having a curved arc shape is widely used, and it is preferable that the thread gripping means is formed inside the curve of the suture needle. It is preferable that the tube has the same axis as the suture needle, and the outer surface of the suture needle and the inner diameter of the outer sheath tube form a substantially continuous surface.

The thread gripping means has a groove-like shape,
The width and depth of the groove are such that at least the thread 7 is held in the groove, and specifically, the width is about 1 to 4 mm,
The depth is preferably about 0.5 to 2 mm, more preferably
The width is about 2 to 3 mm and the depth is about 1 to 1.5 mm.

Further, in the suture needle, when the needle tip is on the long axis of the first support and the needle tip is directed to the operation member side, the angle is 0 °, with respect to the long axis. It is preferably about 60 to 150 °, more preferably about 90 °.

Further, the radius of curvature of the axis of the suture needle and the outer tube is preferably about 5 to 35 mm, more preferably about 10 to 25 mm.

Further, the installation position of the thread gripping means is preferably about 1/4 to 3/4, more preferably about 1/3 to 2/3 from the needle tip with respect to the entire length of the suture needle.

Further, the suture needle is preferably made of various metal materials such as stainless steel, titanium, nickel, tungsten and alloys thereof.

Further, the suture needle is not limited to a curved needle, but can be applied to a linear needle.

Needless to say, the use of the suturing device is not limited to the laparoscopic surgery, but it can be applied to ordinary surgery and other suturing operations.

Further, as the constituent material of the outer tube, various metal materials such as stainless steel, titanium, nickel, tungsten and alloys thereof, and for example, polyethylene, polypropylene, hard polyvinyl chloride, polyester, polyarylate, polyamide are used. Various hard resins such as polyimide, polycarbonate, fluororesin, polyphenylene sulfide, polysulfone, polyether ether ketone, phenol resin, acrylic, ETFE, and PTFE are preferable.

Furthermore, the length of the first support and the second support is about 100 to 500 mm, and those used by inserting into the trocar tube as in laparoscopic surgery are sutured. The length by which the needle 2 is sufficiently protruded from the trocar tube is preferably about 200 to 500 mm, more preferably about 300 to 350 mm, and the one that is not inserted into the trocar tube as in laparotomy is 100 to 300 m.
m is preferable, and more preferably 150 to 200 mm
It is a degree.

Further, the constituent materials of the first support, the second support, the operating member, the operating member, the arch member and the fixing means are stainless steel, titanium, nickel, tungsten and these. Alloys and other metal materials, polyethylene, polypropylene, hard polyvinyl chloride, polyester, polyarylate, polyamide, polyimide, polycarbonate, fluororesin, polyphenylene sulfide, polysulfone, polyether ether ketone, phenolic resin, acrylic, ETFE, PTFE
Various hard resins such as

In order to achieve the above-mentioned object, a suture needle having a thread grasping means for grasping a suture thread, which has a sharp needle tip formed at its tip, and an outer tube which can be brought into close contact with the suture needle are provided. A suture needle having an operating means capable of encapsulating and exposing the thread gripping means from the mantle tube, the operating means being provided in a locking portion formed at the other end of the needle tip of the suture needle. A winding rod, a spring installed between the locking portion and the outer tube, an operation wire locked to one end of the outer tube and locked to a rod member via the winding bar, An operating member that is supported by the rod member and that moves the rod member in the direction of the rod member axis; and a support body that supports the locking portion at one end and supports the operating member at the other end, By operating the operating member in the axial direction of the support, the operating wire and the rod member are interlocked. By sliding the outer tube to the needle axis, a suturing device that thread gripping means encapsulation, exposed.

The side of the rod member where the operation wire is locked is formed in a U-shape, and the U-shaped portion is fitted with the suture needle, so that the thread gripping means is in the wrapped state. Fixed.

Further, the length of the support is 100 to 50.
It is about 0 mm, and what is used by inserting it into the trocar tube as in laparoscopic surgery has a length such that the suture needle 2 is sufficiently projected from the trocar tube, and is 200 to 500 mm.
It is preferably about 300 to 350 mm, more preferably about 100 to 300 mm, and more preferably about 150 to 200 mm for those not inserted into the trocar tube as in laparotomy.

Further, as the constituent material of the support, the operation handle and the rod member, metallic materials such as stainless steel, titanium, nickel, tungsten and alloys thereof, polyethylene, polypropylene, hard polyvinyl chloride, Polyester, polyarylate, polyamide, polyimide, polycarbonate, fluororesin, polyphenylene sulfide, polysulfone, polyetheretherketone, phenol resin, acrylic, ETF
Various hard resins such as E and PTFE are preferable.

Further, as a constituent material of the operating wire, a metal wire such as a stainless wire, a stranded wire, polyamide, polyethylene, polypropylene, polycarbonate, a rubber tube and the like are preferable.

Further, what achieves the above-mentioned object is to form a sharp needle tip at the tip and to have a suture needle having a thread grasping means for grasping a suture thread, and an outer tube which can be brought into close contact with the suture needle. A suture needle having an operating means capable of encapsulating and exposing the thread gripping means from the mantle tube, the first supporting member being supported on the other end of the needle tip of the suture needle, and the mantle tube of the mantle tube. A second support member supported at one end, an operating portion provided at the other end of the first support member and the second support member, the first support member and the second support member A connecting pin that rotatably connects the suture needle and the outer tube with the connecting pin as a fulcrum when the operating portion is rotated. Wrap, exposed suture needle.

By having a holding member for fixing the first supporting member and the second supporting member in a close contact state, the thread gripping means is fixed in the wrapped state.

Further, the lengths of the first support member and the second support member are about 100 to 500 mm, and those used by inserting into the trocar tube as in laparoscopic surgery are sutured. The length by which the needle 2 is sufficiently protruded from the trocar tube is preferably about 200 to 500 mm, more preferably about 300 to 350 mm, and 100 to 30 is not inserted into the trocar tube as in laparotomy.
0 mm is preferable, and more preferably 150 to 200.
It is about mm.

Further, the installation position of the connection pin is the first position.
With respect to the total length of the support member and the second support member, it is preferably about 1/5 to 1/2 of the total length from the side supporting the suture needle, and more preferably about 1/5 to 3/5.

The constituent materials of the first supporting member, the second supporting member and the operating portion are metallic materials such as stainless steel, titanium, nickel, tungsten and alloys thereof, polyethylene, polypropylene and hard materials. Polyvinyl chloride, polyester, polyarylate, polyamide, polyimide, polycarbonate, fluororesin, polyphenylene sulfide, polysulfone, polyether ether ketone, phenol resin, acrylic, ETF
Various hard resins such as E and PTFE are preferable.

Further, the structure of the thread gripping means of the present invention can be replaced with any structure having a function of gripping a thread, and the installation position and the number of the thread gripping means can be set arbitrarily. The suture needle and the operation means of the outer tube can be replaced with a structure capable of enclosing and exposing the thread gripping means.
The operating member or the like for operating the operating means can be replaced with a shape that facilitates sewing when the operating means is operated.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The suturing device of the present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited to the following embodiments as long as the above-mentioned gist is not impaired. Not a thing.

FIG. 1 is a perspective view (exposed state of thread gripping means) showing the overall construction of an embodiment of the suturing device of the present invention. Figure 2
FIG. 3 is a perspective view (thread gripping means encapsulated state) showing the overall configuration of an embodiment of the suturing device of the present invention. FIG. 3 is a cross-sectional view taken along the line AA ′ of an embodiment of the suturing device of the present invention. FIG. 4 is an enlarged side view of a suture needle portion of an embodiment of the suturing device of the present invention. FIG. 5 is a side view showing a suturing procedure by the suturing device of the present invention (a state in which a living needle is inserted through a living tissue). Figure 6
[Fig. 6] is a side view (a state of grasping a thread) showing a suturing procedure by the suturing device of the present invention. FIG. 7 is a side view showing a suturing procedure using the suturing device of the present invention (a state in which a thread is inserted into a biological tissue).
Is. FIG. 8 is a side view of an embodiment of the suturing device of the present invention (state in which the thread gripping means is wrapped). FIG. 9 is a side view (exposed state of the thread gripping means) of an embodiment of the suturing device of the present invention.
FIG. 10 is a cross-sectional view taken along the line BB ′ of the suturing device according to the embodiment of the present invention. FIG. 11 is a side view of an embodiment of the suturing device of the present invention. In the following description, the right side in each drawing is referred to as the "base end" and the left side is referred to as the "tip end".

The illustrated suturing device 1 is a suturing device mainly used for laparoscopic surgery, and is installed through the abdominal wall, and is a trocar tube (communication pipe) which is a communication pipe for communicating the inside of the abdominal cavity with the outside of the body. No.) is used by inserting inside.

As shown in FIG. 4, the suture needle 2 has a sharp needle tip 22, is curved in an arc shape, and has a thread gripping means 23 formed in the middle of the longitudinal direction. A first support body 4 described later is supported on the other end side of the tip 22.

The outer tube 3 has the same axis as the suture needle 2, the inner diameter of the outer tube 3 is slightly larger than the outer diameter of the suture needle 2, and the outer surface of the outer tube 3 is the same as the outer surface of the outer tube 3. The outer surface of the suture needle 2 substantially forms a continuous surface, and the needle tip 22 and the other end side of the suture needle 2 support a second support 41, which will be described later.

As shown in FIGS. 1 and 2, the suturing device 1
Is a curved suture needle 2, an outer tube 3 having the same axis as the suture needle 2, and a first support body 4 supporting one end of the suture needle 2.
A second support 41 that supports one end of the outer tube 3, the first support 4 and the second support 41, and the axis 21 of the suturing needle 2.
And an operating means for sliding the same in the direction.

The first support 4 supports the suture needle 2 on the distal end side in a direction orthogonal to the axis of the first support 4, the proximal end supports the operating member 5, and a little from the middle portion. A hollow portion 42 is formed on the base end side to insert an operation means described later.

The second support 41 has a hollow arch member 4 that supports the outer tube 3 on the distal end side and supports the first support 4.
4, the leaf spring 43 is installed in the vicinity of the middle portion, and the operation means described later is provided slightly on the base end side of the middle portion.

The arch member 44 has a hollow shape in the axial direction of the second support 41, is curved with the same radius of curvature as the axis 21 of the suture needle 2, and is installed on the axis 21.

Since the operating member 5 must be moved in the direction of the axis 21 of the suture needle 2 in order to suture a living tissue with the curved suture needle 2, it is preferable to have a shape as shown in FIG. .

The arch member 44 has a hollow shape in the axial direction of the second support 41, is curved with the same radius of curvature as the axis 21 of the suture needle 2, and is installed on the axis 21.

As shown in FIG. 1 and FIG. 2, the operating means is installed on the second supporting member 41 and the operating member 6 provided slightly on the proximal side of the intermediate portion of the second supporting member 41. It is composed of a flat spring 43 and an arch member 44.

The operating member 6 is curved with the same radius of curvature as the suturing needle 2, and the second support 41 on the parallel line of the axis 21.
And is inserted into the hollow portion 42 of the first support body 4. In addition, as shown in FIG.
Has a fixing portion 61, a second fixing portion 62, and a fixing portion operating portion 63, and the first fixing portion 61, the second fixing portion 62, and the fixing portion operating portion 63 are formed of the same member. When the fixed portion operating portion 63 is pressed, the first fixed portion 61 is pressed.
And the 2nd fixing | fixed part 62 retracts in the operation member 6, and the holding | grip of the 1st support body 4 is cancelled | released.

Therefore, in the state shown in FIG. 2, the fixed portion operating portion 63 is pressed, the first fixed portion 61 is released, and the first support 4 is moved along the operating member 6 to the second fixed portion. When moved to the 62 side and fixed by the second fixing portion 62,
The yarn gripping means 23 is covered by the outer tube 3 in association with the movement of the first support 4. Further, since the leaf spring 43 and the arch member 44 are provided, when fixed to the second fixing portion 62, the first support body 4 and the second support body 41 are fixed in a parallel state, and the suture is performed. This is the state (see FIG. 1).

Further, in the reverse operation, in the state shown in FIG. 1, the fixed portion operating portion 63 is pressed, the second fixed portion 62 is released, and the first support 4 is moved to the first position along the operating member. If it is moved to the side of the fixed portion 61 and fixed by the first fixed portion 61, the thread gripping means 23 projects from the outer sheath tube 3 and is exposed.
The thread is put on and taken off (see FIG. 2).

Next, the suturing method (action) by the suturing device 1 of the present invention will be described with reference to FIGS. 1 and 2 and FIGS. 5 to 7 when applied to suturing in laparoscopic surgery. First, the forward suturing as the first suturing example will be described.

[1] As shown in FIG. 1, the fixed portion operating portion 63 is operated to release the first fixed portion 61, and the first support 4 is moved along the operating member 6 to Gripping means 23
Is covered with the mantle tube 3 and put in a sutured state, and as shown in FIG. 5, the thread gripping means 23 is pierced to such an extent as to project from the living tissue 8.

[2] As shown in FIG. 2, the fixed portion operation portion 63 is operated to release the second fixed portion 62, and the first support 4 is moved along the operating member to move the first fixed portion 62 to the first support portion 4. The thread holding means 23 is fixed by the fixing portion 61, and the thread gripping means 23 is exposed.

[3] As shown in FIG. 6, the thread gripping means 2
The thread 7 is hooked on the thread 3, and the thread gripping means 23 is put in the wrapped state again, and as shown in FIG. 7, the suture needle 2 is pulled back and pulled out from the living tissue 8. As a result, the thread 7 becomes the living tissue 8
It can be inserted through the inside and sutured in the forward direction.

Next, the reverse stitching which is the second stitching example will be described.

[1 '] As shown in FIG. 2, the fixed portion operating portion 63 is operated to release the second fixed portion 62, and the first support 4 is moved along the operating member to move the first Fixing part 61
Then, the thread gripping means 23 is exposed (operation [2]).

[2 '] The thread 7 is attached to the thread gripping means 23, and as shown in FIG. 1, the fixing section operating section 63 is operated to release the first fixing section 61, and the operation member 6 is moved along the moving section 6. Then, the first support 4 is moved to cover the thread gripping means 23 with the outer tube 3 and put into a sutured state, and as shown in FIG.
3 is pierced to the extent that it protrudes from the living tissue 8 (operation [1]). As a result, the thread 7 is inserted into the living tissue 8 together with the suture needle 2.

[3 '] As shown in FIG. 5, the yarn gripping means 23 is exposed and the yarn 7 is released. By the operations of [1 ′] and [2 ′] above, suturing in the opposite direction can be performed.

If the above-described suturing in the forward direction and the reverse direction is performed by using the two suturing devices 1 of the present invention, the tissue to be sutured can be sutured continuously.

Next, a second embodiment of the suturing device 1 of the present invention will be described with reference to FIGS.

As shown in FIGS. 8 and 9, the suture needle 2
Has a sharp needle tip 22, is curved in an arc shape, forms a thread gripping means 23 in the middle of the inside of the curve in the longitudinal direction, and has a locking portion 25 on the other end side of the needle tip 22. The engaging portion 25 has a winding rod 26.

The locking portion 25 of the suture needle 2 is supported by the support body 45.

The mantle tube 3 has the same axis as the suturing needle 2, and has an inner diameter slightly larger than the outer diameter of the suturing needle 2.
The outer surface of the outer tube 3 and the outer surface of the suture needle 2 substantially form a continuous surface, and an operation wire 66 described later is locked at one end.

The suturing device 1 has a curved suture needle 2, a mantle tube 3 having the same axis as the suture needle 2, a support 45 for supporting one end of the suture needle 2, and a suture needle 2 and the mantle tube 3. It has an operating means for sliding the needle 2 in the direction of the axis 21 and an operating handle 51 for operating the operating means.

The support 45 has a long and hollow shape, and supports the engaging portion 25 of the suture needle 2 on the distal end side and the operation handle 51 on the proximal end side.

The operation handle 51 has a fixed member 52 whose one end is locked to the outer tube 3, a movable member 53 which is movably connected to the fixed member 52 at a fulcrum 54, and between the fixed member 52 and the movable member 53. And an operating handle spring 55 installed in the.

The operating means are the locking portion 25 and the outer tube end portion 31.
Of the spring 64 installed between the operating tube 51, the operating wire 66 that is locked to the outer tube 3 and to the rod member 65 described later via the winding rod 26, the U-shaped tip, and the operating handle 51. The rod member 65 is composed of a base end portion that is locked to the movable member 53, and an operation handle 51 that performs an operation for sliding the outer tube 3 in the direction of the axis 21 of the suture needle 2.

When the movable member 53 of the operating handle 51 is pulled to the proximal end side, the rod member 65 and the operating wire 66 are also interlocked to move toward the proximal end side, and the outer tube 3 moves in the direction of the axis 21 of the suture needle 2. The thread gripping means 23 is exposed. When the grip of the operation handle 51 is released, the mantle tube 3 is moved to the needle tip 22 side by the tension of the operation handle spring 55 and the spring 64, and the thread gripping means 23 is put into the wrapped state. Further, the U-shaped portion 67 formed at the tip portion of the rod member 65 also moves to the tip side and is fitted between the locking portion 25 and the outer tube end portion 31, thereby fixing the outer tube 3. By providing such a fixing means as well, it is possible to prevent the thread gripping means 23 from being exposed due to the pressure when suturing the living tissue.

By operating the operation handle 51, it is possible to remotely enclose and expose the yarn gripping means 23, so that the suturing in the forward and reverse directions can be performed.

Next, a third embodiment of the suturing device 1 of the present invention will be described with reference to FIG.

The sharp needle tip 22 of the suture needle 2 extends from the first support member 46. The other radii of curvature, the length, the shape of the thread gripping means and the like and the constituent materials are the same as those in the above-mentioned embodiment.

The outer tube 3 extends from the second supporting member 47, and the notch 32 is formed in the second supporting member 47. Other shapes such as radius of curvature and length, and constituent materials are the same as those in the above-mentioned embodiment.

The suturing device 1 includes a curved suture needle 2, an outer sheath tube 3 having the same axis as the suture needle 2, a first support member 46 having one end of the suture needle 2, and one end of the outer sheath tube 3. Second equipped
The support member 48, the operating means for sliding the suture needle 2 and the outer tube 3 in the direction of the axis 21 of the suture needle 2, and the operating portion 56 for operating the operating means.

The first support member 47 has the suture needle 2 inserted into the notch 32 of the outer tube 3 at one end, and has the operating portion 56 at the other end. The second support member 47 includes the outer tube 3 at one end and the operation portion 56 at the other end.

In the present embodiment having the above-mentioned structure, the first support member 46 and the second support member 47 are the fulcrum 4 of the support members.
Since it is movably connected with the connecting pin 68 at 8, the suture needle 2 and the outer tube 3 can be moved by operating the operation portion 56.

The operating portion 67 is formed on the base end sides of the first supporting member 46 and the second supporting member 47, and the holding member 57 is provided.
When the first support member 46 and the second support member 47 are in close contact with each other, the holding member engages and maintains the close contact.

When the holding member 57 in the engaged state is released and the operating portion 56 is moved in the direction of the arrow, the fulcrum 48 of the supporting member is released.
The first support member 46 and the second support member 47 move via the needle, and the suture needle 2 and the outer tube 3 are interlocked with it, and the thread gripping means 23 is exposed. Further, when the operating portion 56 is operated to bring the holding member 57 into the engaged state, the thread gripping means 23
Is in an encapsulated state, and since the first support member 46 and the second support member 47 are fixed in close contact with each other by the holding member 57, the thread gripping means 23 is fixed by the pressure when the living tissue is sutured. You can prevent it from being exposed.

By operating the operation portion 56 to put the thread gripping means 23 into the covered and exposed state, the above-mentioned forward direction,
The sewing in the opposite direction is possible.

As described above, in the suturing device 1 of the present invention, the thread gripping means 23 can be encapsulated and exposed by moving the suture needle 2 and the outer tube 3 in the direction of the axis 21.
Can be easily attached and detached. In particular, in laparoscopic surgery, the thread 7 can be easily attached and detached while the suture needle 2 is left in the abdominal cavity.

Moreover, since the thread 7 can be attached and detached only by protruding the needle tip 22 side of the suture needle 2 to the extent that the thread gripping means 23 is exposed from the surface of the living tissue 8, the suture needle 2 is moved. The distance is short, the operability of suturing is excellent, and the living tissue is less damaged.

The suturing device 1 of the present invention has been described above based on the illustrated embodiment, but the present invention is not limited to this. For example, the structure of the thread gripping means 23 has a function of gripping a thread. The thread gripping means 23 can be replaced with an arbitrary structure, and the installation position and the number of the thread gripping means 23 can be arbitrarily set. The structure of the operating means of the suture needle 2 and the outer tube 3 is the thread gripping means 23. Can be encapsulated and can be replaced with one that can be exposed, and the operating member for operating the operating means can be replaced with a shape that facilitates sewing when the operating means is operated.

[0076]

As described above, according to the suturing device of the present invention, a sharp needle tip is formed at the tip and a suture needle having a thread gripping means for gripping a suture thread is provided, and the suture needle is closely attached to the suture needle. What is claimed is: 1. A suture needle having a possible outer tube and an operating means capable of encapsulating and exposing the thread gripping means from the outer tube, the operating means supporting a first end of the suturing needle. A support, a second support that supports one end of the outer tube, and an operating member for allowing the first support or the second support to slide on the axis of the suture needle, The operating member is supported by either the first supporting body or the second supporting body, and the operating shaft of the operating member and the axis of the operating member are parallel to each other. By moving the thread gripping means in the direction of the actuating axis, the thread gripping means can be encapsulated and exposed. When used to insert the trocar tube, the needle remains indwelling intraperitoneally, by remote control, it is possible to perform attachment and detachment of the yarn easily.

Since the thread gripping means is formed midway in the longitudinal direction of the suture needle, the suture can be sutured without passing the entire length of the suture needle into the living tissue, so that the operability of the suture is improved. At the same time, contamination from outside the body can be reduced.

Further, since the outer surface of the suture needle and the outer surface of the mantle tube substantially form a continuous surface, when the suture needle is passed through the living tissue, the outer surface of the suture needle is Since it slides smoothly against, there is little damage to living tissue, and safety is high.

The suturing device of the present invention further comprises a suture needle having a sharp needle tip formed at the tip thereof and having a thread gripping means for gripping a suture thread, an outer sheath tube which can be brought into close contact with the suture needle, What is claimed is: 1. A suture needle having an operating means capable of encapsulating and exposing the thread gripping means from the outer tube, wherein the operating means is provided on a locking portion formed at the other end of the needle tip of the suture needle. An encircling rod, a spring installed between the engaging portion and the outer tube, and an operation wire that is engaged with one end of the outer tube and is engaged with the rod member through the enclosing rod. An operating member that is supported by the rod member and that moves the rod member in the direction of the rod member axis; and a support body that supports the locking portion at one end and supports the operating member at the other end. By operating the operating member in the axial direction of the support, the operating wire and the rod member are interlocked with each other. Since the thread gripping means can be encapsulated and exposed by sliding the trocar on the axis of the suture needle, the suture needle can be inserted and used in the trocar tube as in laparoscopic surgery. The thread can be easily attached and detached by remote control with the needle left in the abdominal cavity.

Further, since the thread gripping means is formed midway in the longitudinal direction of the suture needle, suturing can be performed without passing the entire length of the suture needle into the living tissue, so that the operability of suturing is improved. At the same time, contamination from outside the body can be reduced.

Further, since the outer surface of the suture needle and the outer surface of the mantle tube substantially form a continuous surface, when the suture needle is passed through the living tissue, the outer surface of the suture needle is Since it slides smoothly against, there is little damage to living tissue, and safety is high.

Further, the suturing device of the present invention has a suture needle having a thread grasping means for grasping a suture thread, which has a sharp needle tip formed at the tip thereof, an outer tube which can be brought into close contact with the suture needle, and A suture needle having an operating means capable of encapsulating and exposing the thread gripping means from the mantle tube, the first supporting member being supported on the other end of the needle tip of the suture needle, and the mantle tube. Second support member supported at one end of the first support member, an operation portion provided at the other end of the first support member and the second support member, the first support member and the second support member And a connecting pin that rotatably connects with each other. When the operating portion is rotated, the suture needle and the outer tube are also rotated around the connecting pin as a fulcrum, so that the thread gripping means Since it can be encapsulated and exposed, it can be used by inserting it into the trocar tube as in laparoscopic surgery. Gohari while was placed in the abdominal cavity, by remote control, it is possible to perform attachment and detachment of the yarn easily.

Since the thread gripping means is formed midway in the longitudinal direction of the suture needle, the suture can be sutured without passing the entire length of the suture needle into the living tissue, so that the operability of the suture is improved. At the same time, contamination from outside the body can be reduced.

Further, since the outer surface of the suture needle and the outer surface of the mantle tube substantially form a continuous surface, when the suture needle is passed through the living tissue, the outer surface of the suture needle is replaced by the living tissue. Since it slides smoothly against, there is little damage to living tissue, and safety is high.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire configuration of an embodiment of a suturing device according to the present invention (a state in which a thread gripping means is wrapped).

FIG. 2 is a perspective view showing an overall configuration of an embodiment of the suturing device of the present invention (thread gripping means exposed state).

FIG. 3 is a cross-sectional view taken along the line AA ′ of the embodiment of the suturing device of the present invention.

FIG. 4 is a side view of a suture needle portion of an embodiment of the suturing device of the present invention.

FIG. 5 is a side view showing a suturing procedure using the suturing device of the present invention (a state in which a living needle is inserted through a living tissue).

FIG. 6 is a side view (a state in which a thread is grasped) showing a suturing procedure by the suturing device of the present invention.

FIG. 7 is a side view showing a suturing procedure by the suturing device of the present invention (a state in which a thread is inserted into a biological tissue).

FIG. 8 is a side view of an embodiment of the suturing device of the present invention (thread gripping means encapsulated state).

FIG. 9 is a side view of an embodiment of the suturing device of the present invention (thread gripping means exposed state).

FIG. 10 is a cross-sectional view taken along the line BB ′ of the embodiment of the suturing device of the present invention.

FIG. 11 is a side view of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suture device 2 Suture needle 21 Axis line 22 Needle tip 23 Thread gripping means 24 Holding needle part 25 Locking part 26 Encircling rod 3 Outer tube 31 Outer tube end 32 Notch 4 First support 41 Second support 42 Hollow part 43 Leaf spring 44 Arch member 45 Support 46 First support member 47 Second support member 48 Support member fulcrum 5 Operation member 51 Operation handle 52 Fixed member 53 Movable member 55 Operation handle spring 56 Operation part 57 Holding Member 6 Operating member 61 First fixing part 62 Second fixing part 63 Fixed part Operating part 64 Spring 65 Rod member 66 Operating line 67 U-shaped part 68 Connection pin 7 Thread 8 Biological tissue

Claims (7)

[Claims] 1. A suture needle having a thread grasping means for grasping a suture thread, which has a sharp needle tip at its tip, an outer sheath tube which can be in close contact with the suture needle, and the thread grasping means for the outer sheath tube. A suture needle having an operating means that is capable of being encapsulated and exposed from the first suture needle, the operating means including a first support that supports one end of the suture needle and a second support that supports one end of the mantle tube. Body, an operating member for sliding the first support or the second support on the axis of the suture needle, at least one of the first support and the second support A suturing device comprising an operation member supported on one side. 2. The operating member is formed with the same radius of curvature as the suture needle, supported by the second support, and the first supporting member.
The suture instrument according to claim 1, wherein the suture instrument is inserted into a hollow portion provided in the support body. 3. The operating member operates a first fixing part and a second fixing part for fixing the first support, and a first fixing part and a second fixing part. The suturing device according to claim 2, further comprising a fixing means having a fixing portion operating portion. 4. A suture needle having a thread grasping means for grasping a suture thread, which has a sharp needle tip formed at its tip, an outer sheath tube which can be in close contact with the suture needle, and the thread grasping means for the outer sheath tube. A suturing needle having an operating means that is capable of being encapsulated and exposed from the suture needle, wherein the operating means includes a winding rod provided in a locking portion formed at the other end of the needle tip of the suturing needle, and the locking. A spring installed between the outer tube and the outer tube, an operation wire that is locked to one end of the outer tube and locked to the rod member through the winding rod, and supported by the rod member. A suturing device comprising: an operating member for moving the rod member in the direction of the rod member axis; and a support member having one end supporting the locking portion and the other end supporting the operating member. 5. The locking side of the operating wire of the rod member is U
The suturing device according to claim 4, wherein the suturing device is formed in a V shape, and the U-shaped portion is fitted with the suture needle. 6. A suture needle having a thread grasping means for grasping a suture thread, which has a sharp needle tip at its tip, an outer sheath tube which can be in close contact with the suture needle, and the thread grasping means for the outer sheath tube. A suture needle having an operation means that is encapsulated and exposed from the first suture needle, the first support member being supported at the other end of the needle tip of the suture needle;
A second support member supported at one end of the outer tube, an operation portion provided at the other end of the first support member and the second support member, the first support member and the second support member. And a connecting pin for rotatably connecting the supporting member of the suture. 7. The suture instrument according to claim 6, further comprising a holding member that fixes the first support member and the second support member in a close contact state.