【０００１】[0001]
【発明の属する技術分野】本発明は、外科手術等に用い
られる縫合針の製造方法に関し、詳しくは、縫合糸を末
端にかしめ止めすることができる縫合針及び縫合糸が末
端にかしめ止めされた糸付き縫合針の製造方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a suture needle used for a surgical operation or the like, and more particularly, to a suture needle capable of caulking a suture at a distal end and a suture secured at a distal end. The present invention relates to a method for manufacturing a suture needle with a thread.
【０００２】[0002]
【従来の技術】一般に外科手術に用いられる縫合針とし
ては、半円弧状に湾曲して形成されており、その末端に
縫合糸がかしめ止めされたものが知られている。2. Description of the Related Art As a suturing needle generally used for a surgical operation, there is known a suturing needle which is formed to be curved in a semicircular arc shape and a suture is crimped at an end thereof.
【０００３】従来、この種の縫合針は、例えば、先ず、
比較的長い寸法に直線状に形成されてた断面形状が円形
の針材料の先端に鋭利な針先を形成する。次いで、直線
状の針材料の両側からプレス加工を施して一対の平坦面
を形成する。このとき、該針材料の末端の所定範囲には
プレス加工を施さず、平坦面が形成されないようにす
る。これにより、該針材料の末端の所定範囲は断面円形
の部分が残る。そして、該針材料の末端の断面円形の部
分において該針材料の長さ寸法を切り詰めて所定の長さ
の直線状の針素材を形成する。Conventionally, this type of suture needle has, for example,
The cross-sectional shape formed linearly in a relatively long dimension forms a sharp needle tip at the tip of a circular needle material. Next, pressing is performed from both sides of the linear needle material to form a pair of flat surfaces. At this time, a predetermined range at the end of the needle material is not subjected to press working so that a flat surface is not formed. As a result, a portion having a circular cross section remains in a predetermined range at the end of the needle material. Then, the length of the needle material is cut off at the circular section at the end of the needle material to form a linear needle material having a predetermined length.
【０００４】続いて、該針素材の該末端から軸心に沿っ
て穴部を形成する。このとき該穴部は、ドリルによる穿
孔か又はレーザー光線の照射によって所定の深さに形成
される。次いで、直線状の針素材を半円弧状に湾曲さ
せ、縫合針を形成する。このとき、穴部の末端周縁は、
穴部が形成されて比較的肉薄であるので、針素材をその
末端まで湾曲させてしまうと、穴部（特に末端周縁）が
潰れるおそれがあるので、該針素材の末端の所定範囲、
即ち断面円形の部分（前記穴部が形成されている部分）
は直線のままの状態としておき、他の部分を湾曲させる
成形作業が行われる。Subsequently, a hole is formed from the end of the needle material along the axis. At this time, the hole is formed at a predetermined depth by drilling with a drill or irradiating a laser beam. Next, the linear needle material is curved into a semicircular arc to form a suture needle. At this time, the peripheral edge of the hole is
Since the hole is formed and is relatively thin, if the needle material is bent to its end, the hole (particularly, the peripheral edge of the end) may be crushed.
That is, a portion having a circular cross section (a portion where the hole is formed)
Is kept in a straight line, and a molding operation for bending other portions is performed.
【０００５】なお、縫合針を断面視した際に多角形状
（例えば三角形）が形成されるように縫合針の外面に複
数の平坦面を形成する場合には、該平坦面を形成する工
程の後に、針材料の先端に鋭利な針先を形成する工程を
行う。この場合にも、平坦面を形成する際には、該針材
料の末端の所定範囲には平坦面を形成せず、断面円形の
部分を残す。そして、その末端に穴部を形成し、穴部の
潰れを防止するために末端に直線部分を残して湾曲させ
ることは前述のものと同様である。In the case where a plurality of flat surfaces are formed on the outer surface of the suture needle so that a polygonal shape (eg, a triangle) is formed when the suture needle is viewed in cross section, after the step of forming the flat surface, Then, a step of forming a sharp needle tip at the tip of the needle material is performed. Also in this case, when a flat surface is formed, a flat surface is not formed in a predetermined range at the end of the needle material, and a circular section is left. Then, a hole is formed at the end, and the hole is curved while leaving a straight portion at the end in order to prevent the hole from being crushed, as described above.
【０００６】このようにして形成された縫合針には、前
記穴部に縫合糸の端部を挿入し、末端全周を径方向にか
しめ押圧して該穴部を縮径させることによって、該穴部
に縫合糸をかしめ止めする。このとき、該針素材の末端
の所定範囲は直線状に形成されているので、この直線部
分を軸として回転させつつ末端全周を縮径方向に押圧し
て断面円形のかしめ部が形成される。[0006] In the suture needle thus formed, the end of the suture is inserted into the hole, and the entire circumference of the distal end is radially pressed to reduce the diameter of the hole. Secure the suture in the hole. At this time, since the predetermined range of the distal end of the needle material is formed in a linear shape, the entire circumference of the distal end is pressed in the diameter-reducing direction while rotating around the linear portion to form a caulked portion having a circular cross section. .
【０００７】[0007]
【発明が解決しようとする課題】しかし、前記従来の方
法によると、針素材を半円弧状に湾曲させる際に、その
末端に直線部分を残しておかなければならず、湾曲加工
が煩雑となり、作業効率が低下する不都合がある。However, according to the above-mentioned conventional method, when the needle material is curved in a semicircular arc, a straight portion must be left at the end thereof, and the bending process becomes complicated. There is a disadvantage that the working efficiency is reduced.
【０００８】更に、該直線部分は、前記穴部に縫合糸を
かしめ止めした後に仕上げ加工として他の部分と同一の
曲率に修正する作業が必要となる。このため、修正作業
が煩わしいだけでなく、直線部分に形成されている太径
の断面円形の部分が曲げにくく、修正作業に多大な労力
を費やすので、作業効率が低下する不都合がある。[0008] Further, the straight portion requires a work of correcting the same curvature as the other portion as a finishing process after caulking a suture in the hole portion. For this reason, not only is the repair work cumbersome, but also the large-diameter circular section formed in the straight line portion is difficult to bend, and a large amount of labor is required for the repair work, resulting in a disadvantage that the working efficiency is reduced.
【０００９】また、前記従来の方法によって形成された
縫合針は、その末端に他の部分よりも太径の断面円形の
部分が残余しているために、縫合作業の際にこの太径の
部分により穿通が困難となるおそれがあり、円滑な縫合
作業を阻害する不都合がある。更に、このような太径の
断面円形の部分においては、持針器による安定した把持
が望めない不都合がある。Further, in the suture needle formed by the above-described conventional method, a portion having a circular cross section having a larger diameter than other portions remains at the end thereof. This may make it difficult to penetrate, and may hinder a smooth suturing operation. Further, such a large-diameter circular section has a disadvantage that stable holding by the needle holder cannot be expected.
【００１０】かかる不都合を解消して、本発明は、製造
作業の効率を向上させることができ、しかも、縫合作業
が円滑に行える縫合針を容易に製造することができる縫
合針の製造方法を提供することを目的とする。According to the present invention, there is provided a method of manufacturing a suturing needle capable of improving the efficiency of a manufacturing operation and easily manufacturing a suturing needle capable of performing a suturing operation smoothly. The purpose is to do.
【００１１】[0011]
【課題を解決するための手段】かかる目的を達成するた
めに、本発明の縫合針の製造方法は、長尺の針材料の先
端に鋭利な針先を形成する工程と、該材料の針先を除く
全長に亘って該材料の対向する両側に平行して一対の平
坦面を形成する工程と、該材料の末端部を切断して所定
の長さの直線状の針素材を形成する工程と、前記平坦面
が形成された直線状の針素材を、その全長に亘って一定
の曲率の半円弧状に湾曲させる工程と、湾曲する該針素
材の末端を、その径方向に挟持して末端縁を露出させて
位置決めし、該末端縁からその軸線方向に沿って縫合糸
の取り付け穴部を形成する工程とを備えることを特徴と
する。また、長尺の針材料の全長に亘って該材料を断面
視した際に多角形状を形成するように該材料の長手方向
に複数平行して平坦面を形成する工程と、次いで該材料
の先端に鋭利な針先を形成する工程と、該材料の末端部
を切断して所定の長さの前記直線状の針素材を形成する
工程と、前記平坦面が形成された直線状の針素材を、そ
の全長に亘って一定の曲率の半円弧状に湾曲させる工程
と、湾曲する該針素材の末端を、その径方向に挟持して
末端縁を露出させて位置決めし、該末端縁からその軸線
方向に沿って縫合糸の取り付け穴部を形成する工程とを
備えることを特徴とするTo achieve SUMMARY OF THE INVENTION The above objects, a manufacturing method of a suture needle of the present invention,the foregoing needle material long
Forming a sharp tip at the end and removing the tip of the material
A pair of flats parallel to opposite sides of the material over its entire length
A step of forming a carrier surface and cutting the end of the material to a predetermined
Forming a linear needle material of the length of the straight needle materialto the flat surface is formed, a step for bending the semicircular constant curvature over its entire length, said curved Positioning the distal end of the needle material in the radial direction by exposing the distal edge thereof, and forming a suture attachment hole along the axial direction from the distal edge. .In addition, a cross section of the long needle material is taken over the entire length of the material.
Longitudinal direction of the material so as to form a polygonal shape when viewed
Forming a plurality of flat surfaces in parallel with each other;
Forming a sharp needle tip at the tip of the material, and the end of the material
To form the linear needle material having a predetermined length.
A linear needle material on which the flat surface is formed,
Bending a semi-circular arc having a constant curvature over the entire length of the
And pinching the end of the curved needle material in its radial direction
Exposing and positioning the distal edge, its axis extending from the distal edge
Forming a suture attachment hole along the direction.
Characterized by having
【００１２】本発明によれば、直線状の針素材を、その
全長に亘って一定の曲率の半円弧状に湾曲させた後に、
縫合糸の取り付け穴部を形成する。これにより、直線状
の針素材を湾曲させる際には、末端に未だ穴部が形成さ
れていないので従来のような直線部分を形成する必要が
なく、該針素材の全長に亘って一定の曲率で湾曲加工を
行えばよいので、湾曲加工が容易となる。According to the present invention, after a linear needle material is curved into a semicircular arc having a constant curvature over its entire length,
Form suture attachment holes. Accordingly, when the straight needle material is curved, since a hole is not yet formed at the end, there is no need to form a linear portion as in the conventional case, and a constant curvature is provided over the entire length of the needle material. In this case, the bending process can be easily performed.
【００１３】ところで、従来においては、縫合糸の取り
付け穴部を形成する際の針素材の位置決めを確実に行う
必要があるため、ドリル又はレーザー光線による穴明け
軸線と、針素材の末端から所定の範囲の軸線とを一致さ
せやすいように、針素材を湾曲させる前に直線の状態と
して、その末端を断面円形としておく（平坦面を設けな
い）ことにより、ドリル又はレーザー光線に対向する針
素材の末端の端面の面積を広くしていた。By the way, conventionally, since it is necessary to reliably position the needle material when forming the attachment hole portion of the suture, a predetermined range from the end of the needle material with a drilling axis line by a drill or a laser beam is required. In order to make it easy to match the axis of the needle material, the end of the needle material facing the drill or the laser beam is made straight by bending the needle material before bending it, and by making the end circular in cross section (without providing a flat surface). The area of the end face was widened.
【００１４】しかし、前記穴部を形成する際の針素材の
位置決めを確実に行えるならば、針素材が直線状でなく
ても、また、その末端を断面円形としておかなくても
（平坦面を設けておいても）、ドリル又はレーザー光線
による穴明け軸線と、針素材の末端から所定の範囲の軸
線とを高精度に一致させることができることは明らかで
ある。However, if the positioning of the needle material at the time of forming the hole can be performed reliably, the needle material may not be linear, and the end thereof may not have a circular cross section (the flat surface may be flat). Obviously, it is clear that the drilling or laser beam drilling axis and the axis in a predetermined range from the end of the needle blank can be matched with high accuracy.
【００１５】そこで、本発明においては、針素材の末端
を、その径方向に挟持して末端縁を露出させて位置決め
する。このとき、針素材の末端における挟持範囲は比較
的狭くすることが好ましく、針素材の末端における挟持
位置はその末端縁に近いほど好ましい。これによって、
針素材が全長に亘って湾曲形成されていても、針素材の
末端の端面を、ドリル又はレーザー光線に精度良く対向
させることができ、針素材の末端に従来のような直線部
分や断面円形の部分を設けなくても、容易に前記穴部を
形成することができる。また、本発明によれば、針素材
の末端に、従来のような断面円形の部分を残さないの
で、針先以外の部分の断面形状を同一にしておくことが
でき、このことから、長尺の針材料を切断する前工程に
おいて、該材料の全長に亘って予め平坦面を形成してお
くことができる。このとき、針先を除く全長に亘って該
材料の対向する両側に平行して形成された一対の平坦面
であってもよく、また、材料を断面視した際に多角形状
を形成するように該材料の長手方向に複数平行して形成
された平坦面であってもよい。これによって、針材料の
何れの部分を切断しても切断端縁の形状が同一となるの
で、針材料を所望する寸法に適宜切断することができ、
種々の長さの針素材を容易に形成することができると共
に、持針器による把持に好適な形状の平坦面を縫合針に
容易に形成することができる。Therefore, in the present invention, the distal end of the needle material is positioned in such a manner that the distal end is exposed while being clamped in the radial direction. At this time, the holding range at the end of the needle material is preferably relatively narrow, and the holding position at the end of the needle material is preferably closer to the end edge. by this,
Even if the needle material is curved over the entire length, the end face of the end of the needle material can be accurately opposed to a drill or a laser beam. The hole can be easily formed without providing the hole. In addition, according to the present invention, since a circular section is not left at the end of the needle material as in the related art, the cross-sectional shape of the part other than the needle tip can be kept the same, and thus, it is long. In the pre-process of cutting the needle material, a flat surface can be formed in advance over the entire length of the material. At this time, the material may be a pair of flat surfaces formed in parallel on opposite sides of the material over the entire length excluding the needle tip, or may form a polygonal shape when the material is viewed in cross section. It may be a flat surface formed in parallel in the longitudinal direction of the material. Thereby, even if any part of the needle material is cut, the shape of the cutting edge becomes the same, so that the needle material can be appropriately cut to a desired size,
Needle materials of various lengths can be easily formed, and a flat surface having a shape suitable for grasping by a needle holder can be easily formed on a suture needle.
【００１６】本発明において、前記縫合糸の取り付け穴
部を形成する工程に続いて、該穴部に縫合糸を挿入し、
該穴部の外側に位置する末端外周を径方向に対向する方
向からかしめ押圧すると共に、該押圧方向に交差する方
向からかしめ押圧して縮径されたかしめ部を形成する工
程を備えることを特徴とする。In the present invention, following the step of forming the attachment hole for the suture, a suture is inserted into the hole,
A step of crimping the outer periphery of the end located outside the hole portion from a direction opposed to the radial direction, and crimping and pressing from a direction intersecting the pressing direction to form a reduced diameter crimping portion. And
【００１７】本発明によれば、前記縫合糸をかしめ止め
するかしめ部は、縫合糸を挿入した穴部を、径方向に対
向する方向からと、それに交差する方向からとでかしめ
押圧することによって形成されるので、かしめ押圧時に
従来のような針素材の末端部分を軸として回転させる必
要がなく、従って、従来のような針素材の末端部分に直
線部を設ける必要がない。これにより、かしめ部を形成
した後に、縫合針の末端部分を他部と同一の曲率とする
修正作業が不要であるので、作業効率を向上させること
ができる。According to the present invention, the caulking portion for caulking the suture is formed by caulking and pressing the hole into which the suture has been inserted from a direction facing the radial direction and a direction intersecting the hole. Since it is formed, it is not necessary to rotate the distal end portion of the needle material as an axis at the time of pressing by caulking, and therefore it is not necessary to provide a straight portion at the distal end portion of the needle material as in the conventional case. This eliminates the need for a correction operation for forming the distal end portion of the suture needle to have the same curvature as that of the other portion after the formation of the caulked portion, so that the operation efficiency can be improved.
【００１８】そして更に、本発明によれば、針素材の末
端には、他の部分よりも縮径されて小径のかしめ部が形
成され、従来のような他の部分よりも太径の部分が形成
されないので、外科手術の際に円滑に穿通することがで
き、末端において持針器による把持が可能であるので、
縫合作業の際に深く穿通することができ、縫合作業を容
易に行うことができる。Further, according to the present invention, at the end of the needle material, a caulked portion having a smaller diameter than the other portion is formed, and a portion having a larger diameter than the conventional portion is formed. Since it is not formed, it can be penetrated smoothly during surgery and can be grasped by a needle holder at the distal end,
It is possible to penetrate deeply during the suturing operation, and the suturing operation can be easily performed.
【００１９】[0019]
【００２０】[0020]
【００２１】[0021]
【００２２】[0022]
【発明の実施の形態】本発明の実施形態を図面に基づい
て説明する。図１は本実施形態による縫合針の製造方法
を示すブロック図、図２は縫合針の製造方法の各工程を
示す説明図、図３及び図４は穴部形成工程を示す説明
図、図５はかしめ部形成工程を示す説明図、図６はかし
め部を示す説明的斜視図、図７は他の針素材を示す説明
図、図８は図７の針素材におけるかしめ部形成工程を示
す説明図、図９は他の実施形態による縫合針の製造方法
を示すブロック図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a method for manufacturing a suture needle according to the present embodiment, FIG. 2 is an explanatory view showing each step of the method for manufacturing a suture needle, FIGS. 3 and 4 are explanatory views showing a hole forming step, and FIGS. FIG. 6 is an explanatory view showing a caulking portion forming step, FIG. 6 is an explanatory perspective view showing a caulking portion, FIG. 7 is an explanatory diagram showing another needle material, and FIG. 8 is an explanation showing a caulking portion forming process in the needle material of FIG. FIG. 9 is a block diagram showing a method for manufacturing a suture needle according to another embodiment.
【００２３】本実施形態の縫合針の製造方法は、図１に
示すように、順次、針先形成工程１、平坦面形成工程
２、切断工程３、湾曲形成工程４、穴部形成工程５、か
しめ部形成工程６が行われる。As shown in FIG. 1, the method of manufacturing a suture needle according to the present embodiment includes a needle tip forming step 1, a flat surface forming step 2, a cutting step 3, a curved forming step 4, a hole forming step 5, A caulking portion forming step 6 is performed.
【００２４】先ず、針先形成工程１においては、図２
（ａ）に示すように、長尺で直線状の針材料７´の先端
に鋭利な針先８を形成する。該針材料７´は全長に亘っ
て同径の断面円形に形成されたものである。続いて、平
坦面形成工程２においては、図２（ｂ）に示すように、
直線状の針材料７´をその径方向に対向する側から押圧
して長手方向に平行な一対の平坦面９，１０を形成す
る。一対の平坦面９，１０は、針材料７´の針先８を除
いて末端１１まで形成される。この時の針材料７´の押
圧は、図示しないプレス装置によって行われる。続い
て、切断工程３においては、図示しないが、針材料７´
の末端を切除して、所定の長さの直線状の針素材７を形
成する。これによれば、針材料７´の末端を所望する寸
法だけ切除でき、種々の長さの針素材７を容易に形成す
ることができる。First, in the needle tip forming step 1, FIG.
As shown in (a), a sharp needle tip 8 is formed at the tip of a long and linear needle material 7 '. The needle material 7 'is formed in a circular cross section of the same diameter over the entire length. Subsequently, in the flat surface forming step 2, as shown in FIG.
The linear needle material 7 ′ is pressed from its radially opposite side to form a pair of flat surfaces 9, 10 parallel to the longitudinal direction. A pair of flat surfaces 9, 10 are formed up to the distal end 11 except for the needle tip 8 of the needle material 7 '. The pressing of the needle material 7 'at this time is performed by a press device (not shown). Subsequently, in the cutting step 3, although not shown, the needle material 7 '
Is cut off to form a linear needle material 7 having a predetermined length. According to this, the end of the needle material 7 'can be cut off by a desired size, and the needle materials 7 of various lengths can be easily formed.
【００２５】次いで、湾曲形成工程４においては、図２
（ｃ）に示すように、針素材７の全長に亘って同一曲率
の半円弧形状に湾曲させる。このとき、針素材７に形成
されている一方の平坦面９が円弧の内側に位置し、他方
の平坦面１０が円弧の外側に位置するように湾曲させ
る。続いて、穴部形成工程５においては、図２（ｄ）に
示すように、湾曲形成された針素材７の末端に軸方向に
穴部１２を形成する。Next, in the curve forming step 4, FIG.
As shown in (c), the needle material 7 is curved into a semicircular shape having the same curvature over the entire length. At this time, the needle material 7 is curved so that one flat surface 9 is located inside the arc and the other flat surface 10 is located outside the arc. Subsequently, in the hole forming step 5, as shown in FIG. 2D, a hole 12 is formed at the end of the curved needle material 7 in the axial direction.
【００２６】該穴部形成工程５について更に詳しく説明
すれば、前記湾曲形成工程４によって全長に亘って半円
弧形状に湾曲形成された針素材７を、図３（ａ）及び図
３（ｂ）に示すように、位置決め手段１３によって保持
する。該位置決め手段１３は、台座１４上に設けられて
針素材７を両側から挟持する一対の挟持ブロック１５，
１６と、両挟持ブロック１５，１６間に挟持された針素
材７の末端面１７に突き当てて該針素材７の末端１１を
所定位置に位置させる昇降自在の当接ブロック１８と、
該針素材７の末端１１にその上方から圧接し、前記台座
１４との間で該針素材７を位置決め状態でクランプする
昇降自在のクランプ板１９とによって構成されている。
該クランプ板１９は、その厚さ寸法が比較的薄く形成さ
れており（本実施形態においては０．５〜２．０mm）、
針素材７が湾曲されていても、該針素材７の末端１１を
確実にクランプすることができるようになっている。ま
た、前記当接ブロック１８は、前記クランプ板１９によ
る針素材７のクランプが完了したとき下降され、該針素
材７の末端面１７を露出させる。そして、図４に示すよ
うに、前記当接ブロック１８が下降したことによって露
出した該針素材７の末端面１７には、図示しないドリル
又はレーザー光線によって穴部１２が形成される。The hole forming step 5 will be described in more detail. The needle material 7 formed into a semicircular shape over the entire length by the bending forming step 4 is formed as shown in FIGS. 3 (a) and 3 (b). As shown in FIG. The positioning means 13 includes a pair of holding blocks 15 provided on a base 14 for holding the needle material 7 from both sides.
A contact block 18 which can be moved up and down to abut the end face 17 of the needle material 7 held between the holding blocks 15 and 16 to position the end 11 of the needle material 7 at a predetermined position;
The needle material 7 is constituted by a vertically movable clamp plate 19 which is pressed against the distal end 11 of the needle material 7 from above and clamps the needle material 7 with the pedestal 14 in a positioning state.
The clamp plate 19 is formed to have a relatively small thickness (in the present embodiment, 0.5 to 2.0 mm).
Even if the needle material 7 is curved, the distal end 11 of the needle material 7 can be reliably clamped. The contact block 18 is lowered when the clamping of the needle material 7 by the clamp plate 19 is completed, exposing the end face 17 of the needle material 7. Then, as shown in FIG. 4, a hole 12 is formed in the end face 17 of the needle material 7 exposed by the lowering of the contact block 18 by a drill or a laser beam (not shown).
【００２７】その後、かしめ部形成工程６が行われる。
該かしめ部形成工程６においては、図５（ａ）に示すよ
うに、前記穴部１２に縫合糸２１を挿着して、縫合針２
０（７）の末端１１を、かしめ成形用の上型３０と下型
３１との間に位置させる。上型３０と下型３１とは、上
下方向に互いに対向する第１押圧型３０ａ，３１ａを備
えると共に、その一側に上下方向に摺動自在の第２押圧
型３０ｂ，３１ｂを備えている。そして、図５（ｂ）に
示すように、第１押圧型３０ａが３１ａに向かって下降
して縫合針２０の末端１１を上下方向にかしめ加工す
る。それに連続して、図５（ｃ）に示すように、第２押
圧型３１ｂが３０ｂに接近方向に移動し、縫合針２０の
末端１１を左右方向にかしめ加工する。このようにし
て、図６に示すように、縫合針２０の末端１１に他部よ
り縮径された断面四角形状のかしめ部２２が形成され、
該かしめ部２２によって縫合糸２１が確実に連結され
る。Thereafter, a caulking portion forming step 6 is performed.
In the caulking portion forming step 6, as shown in FIG. 5 (a), a suture 21 is inserted into the hole 12 and
The end 11 of 0 (7) is located between the upper die 30 and the lower die 31 for caulking. The upper die 30 and the lower die 31 have first pressing dies 30a and 31a facing each other in the vertical direction, and second pressing dies 30b and 31b slidable in the vertical direction on one side. Then, as shown in FIG. 5B, the first pressing die 30a descends toward 31a to caulk the distal end 11 of the suture needle 20 in the vertical direction. Subsequently, as shown in FIG. 5C, the second pressing die 31b moves in the direction approaching 30b, and the distal end 11 of the suture needle 20 is swaged in the left-right direction. In this way, as shown in FIG. 6, a caulked portion 22 having a rectangular cross section and a diameter smaller than that of the other portion is formed at the distal end 11 of the suture needle 20,
The suture 21 is securely connected by the caulking portion 22.
【００２８】以上のようにして形成された縫合針２０
は、その末端部分に従来のような断面円形の部分が存在
しないので、図示しない持針器によって末端部分を容易
に把持することができ、外科手術等において縫合作業を
行う場合にも身体に円滑に穿通することができる。The suture needle 20 formed as described above
Since the end portion does not have a circular cross section as in the related art, the end portion can be easily grasped by a needle holder (not shown), and can be smoothly applied to the body even when performing a suturing operation in a surgical operation or the like. Can be penetrated.
【００２９】また、本実施形態の方法においては、針素
材７に一対の平坦面９，１０が形成された例を示した
が、それに限るものではなく、例えば、図７に示すよう
に、断面多角形状（図示の例では断面三角形状）となる
ような複数の平坦面２３，２４，２５を針素材７に形成
することもできる。なお、このように平坦面２３，２
４，２５が形成されている針素材７におけるかしめ部形
成工程６は、次のようにして行われる。先ず、図８
（ａ）に示すように、前記穴部１２に縫合糸２１を挿着
して、縫合針２０（７）の末端１１を、かしめ成形用の
上型３２と下型３３との間に位置させる。上型３２と下
型３３とは、上下方向に互いに対向する第１押圧型３２
ａ，３３ａを備えると共に、その一側に斜め上下方向に
摺動自在の第２押圧型３２ｂ，３３ｂを備えている。続
いて、図８（ｂ）に示すように、第１押圧型３２ａが３
３ａに向かって下降して縫合針２０の末端１１を上下方
向にかしめ加工する。それに連続して、図８（ｃ）に示
すように、第２押圧型３３ｂが３２ｂに接近方向に移動
し、縫合針２０の末端１１を左右方向にかしめ加工す
る。このようにして、縫合針２０の末端１１には、他部
より縮径された断面三角形状のかしめ部２７が形成さ
れ、該かしめ部２７によって縫合糸２１が確実に連結さ
れる。Further, in the method of this embodiment, an example is shown in which a pair of flat surfaces 9, 10 are formed on the needle material 7, but the present invention is not limited to this. For example, as shown in FIG. A plurality of flat surfaces 23, 24, and 25 having a polygonal shape (a triangular cross section in the illustrated example) may be formed on the needle material 7. The flat surfaces 23, 2
The caulking portion forming step 6 in the needle material 7 on which the needles 4 and 25 are formed is performed as follows. First, FIG.
As shown in (a), a suture 21 is inserted into the hole 12 and the distal end 11 of the suture needle 20 (7) is positioned between the upper die 32 and the lower die 33 for swaging. . The upper mold 32 and the lower mold 33 are provided with a first pressing mold 32 facing each other in the up-down direction.
a, 33a, and on one side thereof, second pressing dies 32b, 33b slidable in oblique vertical directions. Subsequently, as shown in FIG.
3a, the distal end 11 of the suture needle 20 is crimped in the vertical direction. Subsequently, as shown in FIG. 8C, the second pressing mold 33b moves in the direction approaching 32b, and the distal end 11 of the suture needle 20 is swaged in the left-right direction. In this manner, a caulked portion 27 having a triangular cross section with a smaller diameter than the other portion is formed at the distal end 11 of the suture needle 20, and the suture 21 is securely connected by the caulked portion 27.
【００３０】なお、本実施形態ではかしめ部の形状とし
て断面四角形状と断面三角形状のものを示したが、これ
に限られず、断面円形状のものであってもよい。また、
本実施形態では、針素材７の全長に亘って平坦面９，１
０が形成された例を示したが、持針器による把持に好適
な位置（図示しないが、例えば、針素材７の末端１１を
含む後半部分）にのみ、平坦面９，１０を形成しておい
てもよい。In this embodiment, the shape of the swaged portion is shown as a square cross section or a triangular cross section. However, the shape is not limited to this, and may be a circular cross section. Also,
In the present embodiment, the flat surfaces 9.1 and 1
Although an example in which 0 is formed is shown, flat surfaces 9 and 10 are formed only at a position suitable for grasping by the needle holder (not shown, for example, the rear half portion including the end 11 of the needle material 7). You may leave.
【００３１】また、本実施形態においては、図１に示す
ように、前記針先形成工程１と前記湾曲形成工程４との
間に、前記平坦面形成工程２を備え、所定の長さに切断
された針素材７に前記平坦面９，１０を形成する場合に
ついて説明したが、図７に示す断面三角形状となるよう
な複数の平坦面２３，２４，２５を有する針素材７を形
成する場合には、前記針先形成工程１と前記切断工程３
との間においては、前記平坦面形成工程２を廃し、図９
に示すように、前記針先形成工程１に先立って、図示し
ない長尺の針材料７´の全長に亘って前記平坦面２３，
２４，２５を形成する他の平坦面形成工程２６を設けて
もよい。これによっても、針材料７´の末端を何れの位
置で切断しても切断端縁の形状が同一となるので、針材
料７´の末端を所望する寸法に適宜切除することがで
き、種々の長さの針素材７を容易に形成することができ
る。Further, in this embodiment, as shown in FIG. 1, the flat surface forming step 2 is provided between the needle tip forming step 1 and the bending forming step 4, and is cut to a predetermined length. The case where the flat surfaces 9 and 10 are formed on the formed needle material 7 has been described, but the case where the needle material 7 having a plurality of flat surfaces 23, 24 and 25 having a triangular cross section shown in FIG. 7 is formed. The needle tip forming step 1 and the cutting step 3
9, the flat surface forming step 2 is omitted, and FIG.
As shown in the figure, prior to the needle tip forming step 1, the flat surface 23,
Another flat surface forming step 26 for forming 24 and 25 may be provided. Also by this, even if the end of the needle material 7 'is cut at any position, the shape of the cutting edge becomes the same, so that the end of the needle material 7' can be appropriately cut to a desired size, and various cuts can be made. The needle material 7 having a length can be easily formed.
【図１】本発明の一実施形態による縫合針の製造方法を
示すブロック図。FIG. 1 is a block diagram showing a method for manufacturing a suture needle according to one embodiment of the present invention.
【図２】縫合針の製造方法の各工程を示す説明図。FIG. 2 is an explanatory view showing each step of a method for manufacturing a suture needle.
【図３】穴部形成工程の一部を示す説明図。FIG. 3 is an explanatory view showing a part of a hole forming step.
【図４】穴部形成工程の一部を示す説明図。FIG. 4 is an explanatory view showing a part of a hole forming step.
【図５】かしめ部形成工程を示す説明図。FIG. 5 is an explanatory view showing a caulking portion forming step.
【図６】かしめ部を示す説明的斜視図。FIG. 6 is an explanatory perspective view showing a caulking portion.
【図７】他の針素材を示す説明図。FIG. 7 is an explanatory view showing another needle material.
【図８】図７の針素材におけるかしめ部形成工程を示す
説明図。FIG. 8 is an explanatory view showing a caulking portion forming step in the needle material of FIG. 7;
【図９】他の実施形態による縫合針の製造方法を示すブ
ロック図。FIG. 9 is a block diagram showing a method for manufacturing a suture needle according to another embodiment.
７…針素材、７´…針材料、８…針先、９，１０…平坦
面、１２…穴部、２０…縫合針、２１…縫合糸、２２…
かしめ部。Reference numeral 7: needle material, 7 ': needle material, 8: needle tip, 9, 10: flat surface, 12: hole, 20: suture needle, 21: suture, 22 ...
Caulking part.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) A61B 17/03 - 17/06────────────────────────────────────────────────── ─── Continued on the front page (58) Field surveyed (Int.Cl.7 , DB name) A61B 17/03-17/06
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21727497AJP3095062B2 (en) | 1997-08-12 | 1997-08-12 | Manufacturing method of suture needle |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21727497AJP3095062B2 (en) | 1997-08-12 | 1997-08-12 | Manufacturing method of suture needle |
| Publication Number | Publication Date |
|---|---|
| JPH1156858A JPH1156858A (en) | 1999-03-02 |
| JP3095062B2true JP3095062B2 (en) | 2000-10-03 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21727497AExpired - LifetimeJP3095062B2 (en) | 1997-08-12 | 1997-08-12 | Manufacturing method of suture needle |
| Country | Link |
|---|---|
| JP (1) | JP3095062B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105147343A (en)* | 2015-06-04 | 2015-12-16 | 珠海拓爱医疗科技有限公司 | Connecting method for noninvasive suture needle and suture line |
| CN104939878A (en)* | 2015-06-04 | 2015-09-30 | 珠海拓爱医疗科技有限公司 | Connecting method for eyeless suture needle and suture line |
| CN104939879A (en)* | 2015-06-04 | 2015-09-30 | 珠海拓爱医疗科技有限公司 | Connecting method for eyeless suture needle and suture line |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5350373A (en) | 1992-10-09 | 1994-09-27 | United States Surgical Corporation | Apparatus for attaching surgical suture components |
| US5374278A (en) | 1989-11-14 | 1994-12-20 | United States Surgical Corporation | Method and apparatus for heat tipping sutures |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5374278A (en) | 1989-11-14 | 1994-12-20 | United States Surgical Corporation | Method and apparatus for heat tipping sutures |
| US5350373A (en) | 1992-10-09 | 1994-09-27 | United States Surgical Corporation | Apparatus for attaching surgical suture components |
| Publication number | Publication date |
|---|---|
| JPH1156858A (en) | 1999-03-02 |
| Publication | Publication Date | Title |
|---|---|---|
| US5318542A (en) | Split cannula and process for the production thereof | |
| JPH03244445A (en) | medical suture needle | |
| US20190125981A1 (en) | Medical puncture needle and method of manufacturing puncture needle | |
| JPH053302B2 (en) | ||
| US5928268A (en) | Curved surgical needles and method of making the same | |
| JP3095062B2 (en) | Manufacturing method of suture needle | |
| JPS63309338A (en) | Production of curved suture needle | |
| WO2023025979A1 (en) | Method and device for manufacturing a pipe t-branch | |
| US4604884A (en) | Twisting apparatus of root canal reamer or file material and method for manufacturing root canal reamer or file | |
| US7634933B2 (en) | Surgical needle manufacturing process | |
| JP2643336B2 (en) | Burring processing method and apparatus | |
| JP2003245727A (en) | Sequential molding equipment | |
| JP3129753B2 (en) | Eyeless suture needle with thread, crimping type, and method of manufacturing crimping type | |
| JPH07153501A (en) | Connection part support for fixing metal wire rod and method for manufacturing connection part support or for fixing metal wire rod to connction part support | |
| JPH02251329A (en) | Working method of suture needle | |
| JPH07124660A (en) | Piercing method | |
| JPH05154158A (en) | Suture needle for medical purpose | |
| JPH0810871A (en) | Die for forming burring caulking part and method therefor | |
| JPH0698142B2 (en) | Medical suture needle molding method | |
| JP2001061969A (en) | Method for fixing metal ring | |
| JP2000210383A (en) | Production of tube for radiation mensuration tube for radiation mensuration and marker member thereof | |
| JP2004233014A (en) | Heat exchanger, and method for manufacturing flat tube and header thereof | |
| CA2277842C (en) | Curved surgical needles and method of making the same | |
| JPH0833938A (en) | Method for punching bent portion of hollow shape member and method for manufacturing bumper reinforcement | |
| JP2002331415A (en) | Section steel cutting method |
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20070804 Year of fee payment:7 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20080804 Year of fee payment:8 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20080804 Year of fee payment:8 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20090804 Year of fee payment:9 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20090804 Year of fee payment:9 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20100804 Year of fee payment:10 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20100804 Year of fee payment:10 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20110804 Year of fee payment:11 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20120804 Year of fee payment:12 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20120804 Year of fee payment:12 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20130804 Year of fee payment:13 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| EXPY | Cancellation because of completion of term |