JPS63309338A - Production of curved suture needle - Google Patents
Production of curved suture needleInfo
- Publication number
- JPS63309338A JPS63309338A JP62142806A JP14280687A JPS63309338A JP S63309338 A JPS63309338 A JP S63309338A JP 62142806 A JP62142806 A JP 62142806A JP 14280687 A JP14280687 A JP 14280687A JP S63309338 A JPS63309338 A JP S63309338A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- curved
- main body
- face
- needle body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000005452 bending Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- A61B17/06066—Needles, e.g. needle tip configurations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
- B21G1/00—Making needles used for performing operations
-
- 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
-
- 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
- A61B17/06004—Means for attaching suture to needle
-
- 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
- A61B17/06166—Sutures
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Mechanical Engineering (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
この発明は、針本体の両側部に平面状をなす挾持面が形
成された湾曲縫合針の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a method for manufacturing a curved suture needle in which planar clamping surfaces are formed on both sides of the needle body.
［従来の技術１ ゛
一般に、湾曲縫合針を待針器によって挟持する場合には
、湾曲縫合針の湾曲内外方向を向く部分を挟持するよう
にしでいるが、心臓手術のように、縫合すべき患部が体
内にあり、縫合針を挿入する開口部が小さい場合には、
上記のようにして縫合針を保持したのでは、縫合作業が
非常に行いにくい。そこで、そのような手術においては
、湾曲内外方向と直交する方向を向く部分を挟持するよ
うにしている。この場合、湾曲縫合針の断面形状が円形
であると、手術中に湾曲縫合針がその軸芯を中心にして
回転し易く、このため縫合作業が困難になる。そこで、
挾持すべぎ部分に湾曲内外方向と直交する方向を向く一
対の平面を形成するようにしている。[Prior art 1] Generally, when a curved suture needle is held by a needle holder, the portion of the curved suture needle that faces inwardly and outwardly is held. is inside the body and the opening for inserting the suture needle is small.
If the suture needle is held in the manner described above, suturing work is extremely difficult to perform. Therefore, in such a surgery, the portion facing in the direction perpendicular to the curvature medial and lateral direction is clamped. In this case, if the cross-sectional shape of the curved suture needle is circular, the curved suture needle is likely to rotate around its axis during surgery, making suturing work difficult. Therefore,
A pair of flat surfaces facing in a direction perpendicular to the inner and outer curved directions are formed in the clamping portion.
従来のそのような湾曲縫合針としては、米国特許第３１
９７９９７号公報に記載のものがある。Conventional curved suture needles include U.S. Pat.
There is one described in Japanese Patent No. 97997.
この湾曲縫合針は、第５図および第６図に示すように、
湾曲した針本体１を備えており、この針本体１は針先部
２、断面一様な円形をなす胴部３および縫合糸Ｔが取り
付けられる針元部４から構成されている。そして、胴部
３の中央部には、湾曲内外方向と直交する方向を向く一
対の平面（挾持面）３ａ、３ｂが形成されており、この
平面３ ａ、 ３ ｂを待針器（図示せず）によって挟
持するようにしている。This curved suture needle, as shown in FIGS. 5 and 6,
The needle body 1 is provided with a curved needle body 1, and the needle body 1 is composed of a needle tip portion 2, a body portion 3 having a circular cross section with uniformity, and a needle base portion 4 to which a suture thread T is attached. A pair of flat surfaces (clamping surfaces) 3a and 3b are formed in the center of the body 3, and these flat surfaces 3a and 3b are used as needle guides (not shown). ).
なお、この縫合針においては、湾曲内外方向を向く平面
３ｃ、３ｄを形成し、２方向から挟持し得るようにして
いるが、平面３ ｃ、 ３ ｄを形成しないこともある
。In addition, in this suturing needle, flat surfaces 3 c and 3 d facing the curved inner and outer directions are formed so that it can be held from two directions, but the flat surfaces 3 c and 3 d may not be formed.
ところで、上記のような湾曲縫合針を製造する場合には
、真直な素材に針先研削や外周研削等の加工を行った後
、平面３ａ、 ３ ｂおよび３ ｃ、 ３ ｄをそれぞ
れプレス加工によって形成する。その後、平面３ ａ、
３ ｂが湾曲内外方向と直交する方向を向くようにし
た状態で針本体１を湾曲させるようにしている。By the way, when manufacturing the above-mentioned curved suture needle, after performing processing such as needle tip grinding and outer periphery grinding on a straight material, the flat surfaces 3a, 3b and 3c, 3d are respectively pressed by press processing. Form. After that, plane 3a,
The needle body 1 is curved with the needle 3 b facing in a direction perpendicular to the inner and outer curved directions.
［発明が解決しようとする問題・点１
ところが、湾曲縫合針は非常に細いものであるため、平
面３ ａ、 ３ ｂの向きを一定に固定した状態で湾曲
させるのが非常に困難であり、湾曲加工が完了した湾曲
縫合針においては、平面３ ａ、 ３ ｂが必ずしも湾
曲内外方向と直交する方向を向かず、その方向性に狂い
が生じることが往々にしてあった。また、湾曲縫合針は
、その直径に比してその長さが長いため、軸芯が一平面
上にのるように湾曲させることが難しく、針本体１が螺
旋状になってしまうことがあった。[Problem/Point 1 to be Solved by the Invention However, since the curved suture needle is very thin, it is very difficult to curve it while keeping the directions of the planes 3a and 3b constant. In a curved suture needle that has been curved, the planes 3 a and 3 b do not necessarily face in a direction perpendicular to the inner and outer directions of the curve, and their orientations often become distorted. In addition, since the length of a curved suture needle is long compared to its diameter, it is difficult to curve the needle so that the axis lies on one plane, and the needle body 1 may become spiral-shaped. Ta.
［発明の目的］
この発明は、上記問題を解決するためになされたもので
、挾持面となるべき一対の平面が湾曲内外方向と直交す
る方向を向くようにすることができ、さらに針本体が螺
旋状に形成されるのを防止することができる湾曲縫合針
の製造方法を提供することを目的とする。[Object of the Invention] This invention was made to solve the above problem, and it is possible to make a pair of flat surfaces that are to be clamping surfaces face in a direction perpendicular to the curved inner and outer directions, and furthermore, the needle body can be An object of the present invention is to provide a method for manufacturing a curved suture needle that can prevent the needle from being formed into a spiral shape.
［発明の構成］
この発明は、上記の目的を達成するために、針本体の少
なくとも中央部が湾曲され、その湾曲部の内外方向と直
交する方向を向く両側部に平面状をなす挾持面が形成さ
れた湾曲縫合針を製造するに際し、針本体に湾曲加工を
施した後、両側部にプレス加工によって挾持面を形成す
るようにしたものである。[Structure of the Invention] In order to achieve the above object, the present invention has a needle body whose at least the central portion is curved, and which has planar clamping surfaces on both sides facing in a direction orthogonal to the inner and outer directions of the curved portion. In manufacturing the curved suture needle, the needle body is curved and then clamping surfaces are formed on both sides by press working.
［実施例１
以下、この発明の実施例について第１図ないし第４図を
参照して説明する。[Embodiment 1] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
第１図（Ａ ）、（Ｂ ）、（Ｃ）はこの発明の一実施
例を示すものであり、第１図（Ａ）には、湾曲加工を行
う前の針本体１１が示されている。この針本体１１は、
全体が一直線状に延びており、後述する湾曲加工および
プレス加工以外の加工、例えば針先研削、あるいは外周
研削等の加工は完了している。FIGS. 1(A), (B), and (C) show an embodiment of the present invention, and FIG. 1(A) shows the needle body 11 before being curved. . This needle body 11 is
The entire structure extends in a straight line, and processing other than bending and press processing, which will be described later, such as needle tip grinding or outer periphery grinding, has been completed.
そして、そのような加工により、針本体１１は、その先
端部に断面円形でテーバ状をなす針先部１２が形成され
、その中央部に断面円形で一様な直径を有する胴部１３
が形成され、その後端部に胴部１３と同一直径になされ
、端面に縫合糸（図示せず）が取付られる糸取付孔１４
ａを有する針元部１４が形成されている。Through such processing, the needle body 11 has a tapered needle tip portion 12 with a circular cross section at its tip, and a body portion 13 with a circular cross section and a uniform diameter in the center thereof.
A thread attachment hole 14 is formed at the rear end and has the same diameter as the trunk 13, and a suture thread (not shown) is attached to the end surface.
A needle base portion 14 having a shape is formed.
このような構成の針本体１１に対し、この発明において
は、まず湾曲加工を施す。この湾曲加工については、周
知の湾曲加工法、例えば鋼製の３つのロールを用いる３
０−ル法、あるいは鋼製ロールとウレタンゴムロールと
を用いる２０−ル法等によって行う、なお、この実施例
においては、針元部１４を除く針先部１２および胴部１
３が略半円状に湾曲されているが、胴部１３だけを湾■
させたり、あるいは針本体１１全体を湾曲させたり、ま
た半円状でなく四半円状に湾曲させることがあり、湾曲
態様については任意である。In the present invention, the needle body 11 having such a configuration is first subjected to a curving process. This bending process can be done using a well-known bending method, for example, using three rolls made of steel.
This is carried out by a 0-rule method or a 20-rule method using a steel roll and a urethane rubber roll.
3 is curved into a roughly semicircular shape, but only the body 13 is curved.
The needle body 11 may be curved as a whole, or the needle body 11 may be curved in a quarter-circular shape instead of a semi-circular shape, and the shape of the curve is arbitrary.
次に、針本体１１に対してプレス加工を行う。Next, the needle body 11 is pressed.
このプレス加工に際しては、第１図（Ｃ）に示すように
、プレス面ａ、ｂが互いに平行な上型Ａと下型Ｂとを用
いる。そして、湾曲内外方向と直交する方向を上下に向
けた状態で針本体１１を下型Ｂ上に載置し、上型Ａを下
動させて針本体１１をプレスする。これによって、平面
（挾持面）１３ａ、１３ｂが形成される。なお、湾曲さ
せた後プレス加工すると、湾曲部分の曲率半径がプレス
加工前の曲率半径より大きくことが多いので、その場合
には当初の曲率半径を所望の曲率半径より小さくしてお
くのがよい。すなわも、湾曲内外方向と直交する方向に
プレスすることによって湾曲部分の曲率半径が変化する
分を予め見込んで湾曲加工した後、湾曲内外方向と直交
する方向にプレスするのがよい。In this press working, as shown in FIG. 1(C), an upper die A and a lower die B whose press surfaces a and b are parallel to each other are used. Then, the needle body 11 is placed on the lower die B with the direction perpendicular to the inside and outside curved directions facing up and down, and the upper die A is moved down to press the needle body 11. As a result, flat surfaces (clamping surfaces) 13a and 13b are formed. Note that when pressing is performed after curving, the radius of curvature of the curved part is often larger than the radius of curvature before pressing, so in that case, it is better to make the initial radius of curvature smaller than the desired radius of curvature. . In other words, it is preferable to perform the bending process by taking into account in advance the change in the radius of curvature of the curved portion due to pressing in the direction orthogonal to the inner and outer directions of the curve, and then press in the direction orthogonal to the inner and outer directions of the curve.
ここで、針本体１１を下型Ｂに載置した状態においては
、針本体１１が螺旋状をなしているが、プレス加工によ
り、平面１３ａ、１３ｂが形成されるのと同時に螺旋状
をなす針本体１１が矯正される。したがって、プレス加
工後の針本体１１は、その軸芯が一平面上に存するよう
になる。また、針本体１１を湾曲させた状態で下型Ｂ上
に載置しているから、針本体１１の向きがプレス加工中
に変わることがない。したがって、平面１３ａ、１３ｂ
は必ず湾曲内外方向と直交する方向を向き、その方向性
に狂いが生じるのを防止することができる。Here, when the needle body 11 is placed on the lower mold B, the needle body 11 has a spiral shape, but the needle body 11 has a spiral shape at the same time as the flat surfaces 13a and 13b are formed by press working. The main body 11 is straightened. Therefore, the axis of the needle body 11 after press working lies on one plane. Further, since the needle body 11 is placed on the lower die B in a curved state, the orientation of the needle body 11 does not change during press working. Therefore, planes 13a, 13b
is always oriented in a direction perpendicular to the inside/outside direction of the curve, and it is possible to prevent the directionality from going out of order.
また、上記の実施例においては、螺旋状をなす針本体１
１の矯正効果をより確実にするために、平面１３ａ、１
３ｂの長さく針本体１１の軸芯に沿う。Further, in the above embodiment, the needle body 1 has a spiral shape.
In order to ensure the corrective effect of 1, the planes 13a, 1
3b along the axis of the needle body 11.
長さ）を可及的に長くしており、平面１３ａ、１３ｂの
先端縁が針先部１２の中間部Ｓまで達するようにしてい
る。そしてこのようにすることにより、刺通抵抗の低減
という効果ら得ている。length) is made as long as possible so that the tip edges of the flat surfaces 13a and 13b reach the intermediate portion S of the needle tip portion 12. By doing so, the effect of reducing piercing resistance is obtained.
すなわち、仮に胴部１３の長手方向の一部だけをプレス
加工した場合には、プレス加工によって２平面間の厚さ
が当初の直径より薄くなり、その分だけ２平面が向く方
向と直交する方向の厚さが増す。このため、その部分が
非プレス加工部分から径方向外方向へ向かって突゛出し
、プレス加工部分と非プレス加工部分との間に大きな段
差が生じる。この段差部分を患部に刺通させるときに、
大きな抵抗が生じ、縫合作業を困難にする。これに対し
、上記の湾曲縫合針においては、平面１３ａ１３ｂの先
端縁が針先部１２の中間部Ｓまで達するよう、平面１３
ａ、１３ｂ間の厚さ、つまりプレス完了時の上下の金型
Ａ、Ｂ間の距離りを針先部１２の中間部Ｓにおける半径
と同一にしている。In other words, if only a part of the body 13 in the longitudinal direction is pressed, the thickness between the two planes will become thinner than the original diameter due to the press working, and the thickness between the two planes will become thinner by that much in the direction perpendicular to the direction in which the two planes face. increases in thickness. Therefore, that portion protrudes radially outward from the non-press-processed portion, creating a large step difference between the press-processed portion and the non-press-processed portion. When piercing this step into the affected area,
This creates a large amount of resistance and makes suturing difficult. On the other hand, in the above-mentioned curved suture needle, the flat surface 13
The thickness between a and 13b, that is, the distance between the upper and lower molds A and B when pressing is completed, is made the same as the radius at the intermediate portion S of the needle tip portion 12.
したがって、中間部Ｓにおいてはプレスによる加工率が
零であり、中間部Ｓから後端側へ向かい、針先部１２の
直径が拡大するのにしたがって加工率が緩やかに増大す
る。よって、平面１３ａ、１３ｂが向く方向と直交する
方向の厚さも徐々に厚くなり、プレス加工部分と非プレ
ス加工部分との間に段差が生じることがない。したがっ
て、大きな刺通抵抗が生じることがない。Therefore, the processing rate by pressing is zero in the intermediate portion S, and the processing rate gradually increases as the diameter of the needle tip portion 12 increases from the intermediate portion S toward the rear end side. Therefore, the thickness in the direction perpendicular to the direction in which the planes 13a and 13b face also gradually increases, and no step is created between the pressed portion and the non-pressed portion. Therefore, no large penetration resistance occurs.
なお、胴部１３の後端までプレス加工し、針元部１４に
ついてはプレス加工していないがら、胴部１３と針元部
１４との間に段差が生じることになる。しかし、針元部
１４は糸取付孔１４ａに縫合糸を挿入した後加締められ
る。加締め後の針元部１４の各部の寸法は胴部１３の寸
法より小さくなる。したがって、胴部１３と針元部１４
との間の段差は可算問題になることがない。Although the rear end of the body portion 13 is pressed and the needle base portion 14 is not pressed, a step is created between the body portion 13 and the needle base portion 14. However, the needle base portion 14 is crimped after the suture thread is inserted into the thread attachment hole 14a. The dimensions of each part of the needle base section 14 after crimping are smaller than the dimensions of the body section 13. Therefore, the body portion 13 and the needle base portion 14
The step between is never a countable problem.
また、第２図（Ａ）、（Ｂ）は、この発明の製造方法を
採用して製造された湾曲縫合針の他の例を示すものであ
り、上記の実施例による縫合針と異なるのは、湾曲内外
方向と直交する方向を向く平面１３ａ、１３ｂに加え、
さらに湾曲内外方向を向く平面１３ｃ、１３ｄを形成し
た点である。この場合、平面１３ｃ、１３ｄの先端縁も
平面１３ａ、１３ｂと同様に中間部Ｓに位置させている
が、中間部Ｓより先端側あるいは後端側に位置させるこ
ともある。Moreover, FIGS. 2(A) and 2(B) show other examples of curved suture needles manufactured by adopting the manufacturing method of the present invention, and are different from the suture needles according to the above embodiments. , in addition to planes 13a and 13b facing in a direction perpendicular to the curved inner and outer directions,
Furthermore, planes 13c and 13d facing inward and outward curved directions are formed. In this case, the distal edges of the planes 13c and 13d are also located at the intermediate part S, like the planes 13a and 13b, but they may also be located on the distal end side or the rear end side of the intermediate part S.
このような湾曲縫合針を製造する場合には、まず第１図
（Ａ）に示すような真直な針本体を形成し、その後平面
１３ｃ、４３ｄをプレス加工によって形成する。このプ
レス加工については、湾曲加工前において行ってもよく
、あるいは湾曲加工と同時に行ってもよい。湾曲加工の
前に行う場合には、通常のプレス加工によって行うこと
ができる。一方、湾曲加工と同時に行う場合には、第３
図に示すようにして行う。すなわち、鋼製のロールＲの
外周に薄い鋼帯Ｐの一端部を固定する一方、鋼帯Ｐの他
端部に一定の張力Ｆを付与する。また、鋼帯Ｐから平面
１３ｃ、１３ＣＩ間の距離と同等距離だけ離して金型Ｃ
を配置する。そして、針本体１１を鋼帯Ｐ上に載置し、
ロールＲを矢印方向に回転させる。すると、針本体１１
はロールＲと鋼帯Ｐとの間に巻き込まれ、これによって
湾曲加工がなされる。またこれと同時に、針本体１１は
、鋼板Ｐを介してロールＲと金型Ｃとの間に挾み込まれ
、これによってプレス加工が施され、平面１３ｃ、１３
ｄが形成される。When manufacturing such a curved suture needle, first a straight needle body as shown in FIG. 1(A) is formed, and then flat surfaces 13c and 43d are formed by press working. This press working may be performed before the bending process or simultaneously with the bending process. If it is to be carried out before the bending process, it can be carried out by normal press working. On the other hand, when performing curve processing at the same time, the third
Perform as shown in the figure. That is, one end of a thin steel strip P is fixed to the outer periphery of a steel roll R, while a constant tension F is applied to the other end of the steel strip P. In addition, the mold C is spaced from the steel strip P by the same distance as the distance between the planes 13c and 13CI.
Place. Then, the needle body 11 is placed on the steel strip P,
Rotate roll R in the direction of the arrow. Then, the needle body 11
is rolled up between the roll R and the steel strip P, and is thereby bent. At the same time, the needle body 11 is sandwiched between the roll R and the mold C via the steel plate P, and is press-worked.
d is formed.
そして、平面１３ｃ、１３ｄのプレス加工と針本体１１
の湾曲加工とが完了したら、前述した実施例と同様にし
て平面１３ａ、１３ｂのプレス加工を行う。Then, pressing the planes 13c and 13d and the needle body 11
When the curving process is completed, the flat surfaces 13a and 13b are pressed in the same manner as in the embodiment described above.
なお、上記の実施例においては、挾持面として平面１３
ａ、１３ｂを形成しているが、挾持面は幾何学的な意味
における平面とする必要はなく、断面形状が凸曲線をな
すように、所定に曲率半径を有する凸曲面としてもよい
。所定の曲率半径とは、待針器によって針本体１１を挟
持した際に針本体１１がその軸芯を中心にして回転する
のを防止することができるような曲率半径であり、その
ためには、凸曲面の曲率半径をその凸曲面から針本体１
１の軸芯までの距離より格段に大ぎい曲率半径とする必
要がある。なおまた、凸曲面とは逆に凹曲面にしてもよ
い。In the above embodiment, the flat surface 13 is used as the clamping surface.
a and 13b, the clamping surface need not be a plane in a geometrical sense, but may be a convex curved surface having a predetermined radius of curvature so that the cross-sectional shape forms a convex curve. The predetermined radius of curvature is a radius of curvature that can prevent the needle body 11 from rotating around its axis when the needle body 11 is held by the needle holder. The radius of curvature of the curved surface is determined from the convex curved surface of the needle body 1.
It is necessary to make the radius of curvature significantly larger than the distance to the axis No. 1. Furthermore, a concave curved surface may be used as opposed to a convex curved surface.
さらに、上記の実施例においては、平面１３ａ。Furthermore, in the above embodiment, the plane 13a.
１３ｂを針本体１１の軸線に沿って、つまり軸線から一
定距離をもって形成しているが、若干であれば軸線に対
して傾斜させてもよい。例えば、平面１３ａ、１３ｂの
先端部がその後端部よりも針本体１１の軸線に接近する
ように傾斜させてもよい。13b is formed along the axis of the needle body 11, that is, at a certain distance from the axis, but may be slightly inclined with respect to the axis. For example, the front ends of the flat surfaces 13a and 13b may be tilted closer to the axis of the needle body 11 than the rear ends.
その場合、平面１３ａ、１３ｂの後′４縁が胴部１３の
後端においてその外周と交叉するようにすれば胴部１３
と針元部１４との間に段差が生じるのを防止することが
できる。In that case, if the rear edges of the planes 13a and 13b intersect with the outer periphery of the body 13 at the rear end, the body 13
It is possible to prevent a difference in level from occurring between the needle base portion 14 and the needle base portion 14.
さらにまた、胴部１３を断面四辺形状に形成する場合、
その形状としては、第４図（Ａ）、（Ｂ）にそれぞれ示
すように、長方形あるいは台形に形成してもよい。また
、第３図に示すようにして平面１３ｃ、１３ｃｌを形成
する場合、鋼帯Ｐに巻ぎ取り方向に延びる溝を形成して
おけば、第４図（Ｃ）に示すように、湾曲内外方向の外
方向を向く平面１３ｄに突条１３ｅを形成することも可
能である。さらに、プレス加工前の針本体の断面形状に
ついては、少なくとも胴部または胴部および針先部を第
４図（Ｄ）に示すような断面三角形状に形成してもよい
。この場合には、２つのコーナ部をそのコーナ部間の辺
に沿う方向にプレス加工することにより第４図（Ｅ）に
示すような断面形状を有する縫合針を製造することがで
きる。Furthermore, when the body portion 13 is formed to have a quadrilateral cross section,
Its shape may be rectangular or trapezoidal, as shown in FIGS. 4(A) and 4(B), respectively. In addition, when forming the flat surfaces 13c and 13cl as shown in FIG. 3, if grooves extending in the winding direction are formed in the steel strip P, the curved inner and outer sides can be formed as shown in FIG. 4(C). It is also possible to form the protrusion 13e on the plane 13d facing outward. Furthermore, regarding the cross-sectional shape of the needle body before pressing, at least the body or the body and the needle tip may be formed into a triangular cross-section as shown in FIG. 4(D). In this case, a suture needle having a cross-sectional shape as shown in FIG. 4(E) can be manufactured by pressing the two corner portions in a direction along the side between the corner portions.
［発明の効果１
以上説明したように、この発明の湾曲縫合針の製造方法
によれば、針本体の少なくとも中央部が湾曲され、その
湾曲部の内外方向と直交する方向を向く両側部に平面状
をなす挾持面が形成された湾曲縫合針を製造するに際し
、針本体に湾曲加工を施した後、両側部にプレス加工に
よって挾持面を形成するようにしているから、挾持面と
なるべき一対の平面が湾曲内外方向と直交する方向を向
くようにすることができ、さらに針本体が螺旋状に形成
されるのを防止することができる等の効果が得られる。[Effects of the Invention 1] As explained above, according to the method for manufacturing a curved suture needle of the present invention, at least the central portion of the needle body is curved, and there are flat surfaces on both sides facing in a direction perpendicular to the inner and outer directions of the curved portion. When manufacturing a curved suture needle with a shaped clamping surface, after the needle body is curved, the clamping surfaces are formed on both sides by pressing. The plane of the needle can be oriented in a direction perpendicular to the inner and outer directions of the curve, and the needle body can be prevented from being formed in a spiral shape.
第１図（Ａ ）、（Ｂ ）、（Ｃ）はこの発明の製造方
法を説明するための図であって、第１図（Ａ）は湾曲加
工される前の針本体を示す平面図、第１図ＣＢ）は湾曲
加工後の針本体を示す平面図、第１図（Ｃ）はプレス加
工を示す正面図、第２図（Ａ）、（Ｂ）はこの発明の製
造方法によって製造された湾曲縫合針の例を示し、第２
図（Ａ）はその平面図、第２図（Ｂ）は第２図（Ａ）の
Ｘ−Ｘ線矢視拡大断面図、第３図は湾曲加工と湾曲内外
方向を向く平面のプレス加工とを同時行う方法を示す図
、第４図（Ａ）、（Ｂ）。
（Ｃ）はそれぞれこの発明の製造方法によって製造され
た湾曲縫合針の池の例を示す第２図（Ｂ）と同様の図、
第４図（Ｄ）はプレス加工前の針本体の也の例を示す第
２図（Ｂ）と同様の図、第４図（Ｅ）は第４図（Ｄ）に
示す針本体をプレス加工した後の断面形状を示す図、第
５図は従来の湾曲縫合針の一例を示す側面図、第６図は
第５図の■−Ｖｌ線矢視拡大断面図である。
１１・・・針本体、１２・・・針先部、１３・・・胴部
、１４・・・針元部、１３ａ、１３ｂ・・・平面（挾持
面）。FIGS. 1(A), (B), and (C) are views for explaining the manufacturing method of the present invention, and FIG. 1(A) is a plan view showing the needle body before being curved; Figure 1 (CB) is a plan view showing the needle body after bending, Figure 1 (C) is a front view showing press work, and Figures 2 (A) and (B) are needles manufactured by the manufacturing method of the present invention. An example of a curved suture needle is shown, and the second
Figure (A) is a plan view of the same, Figure 2 (B) is an enlarged sectional view taken along the line X-X of Figure 2 (A), and Figure 3 is a diagram showing the process of bending and pressing of a plane facing inward and outward directions of the curve. FIGS. 4(A) and 4(B) are diagrams illustrating a method for simultaneously performing the above steps. (C) is a view similar to FIG. 2(B) showing an example of a curved suture needle pond manufactured by the manufacturing method of the present invention, respectively;
Figure 4 (D) is a similar view to Figure 2 (B) showing an example of the needle body before pressing, and Figure 4 (E) shows the needle body shown in Figure 4 (D) after being pressed. FIG. 5 is a side view showing an example of a conventional curved suture needle, and FIG. 6 is an enlarged sectional view taken along the line -Vl in FIG. 5. DESCRIPTION OF SYMBOLS 11... Needle main body, 12... Needle tip part, 13... Body part, 14... Needle base part, 13a, 13b... Plane (clamping surface).
Claims (1)
湾曲内外方向と直交する方向を向く両側部に略平面をな
す挾持面が形成された湾曲縫合針を製造するに際し、前
記針本体に湾曲加工を施した後、前記両側部をプレス加
工して前記挾持面を形成することを特徴とする湾曲縫合
針の製造方法。When manufacturing a curved suture needle in which at least the center portion of the needle body is curved and substantially flat clamping surfaces are formed on both sides facing in a direction perpendicular to the curved inner and outer directions of the curved portion, the needle body is curved. A method for manufacturing a curved suture needle, characterized in that after applying the above steps, the both sides are press-worked to form the clamping surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62142806A JPS63309338A (en) | 1987-06-08 | 1987-06-08 | Production of curved suture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62142806A JPS63309338A (en) | 1987-06-08 | 1987-06-08 | Production of curved suture needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63309338A true JPS63309338A (en) | 1988-12-16 |
| JPH0327295B2 JPH0327295B2 (en) | 1991-04-15 |
Family
ID=15324073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62142806A Granted JPS63309338A (en) | 1987-06-08 | 1987-06-08 | Production of curved suture needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63309338A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5100432A (en) * | 1990-02-22 | 1992-03-31 | Matsutani Seisakusho Co., Ltd. | Surgical suture needle of the taper point type |
| US5287721A (en) * | 1992-08-12 | 1994-02-22 | United States Surgical Corporation | Apparatus and method for forming curved needles |
| EP0591995A2 (en) * | 1992-10-09 | 1994-04-13 | United States Surgical Corporation | Apparatus for orienting a curved workpiece |
| US5388441A (en) * | 1992-12-29 | 1995-02-14 | United States Surgical Corporation | Needle curver with automatic feed |
| US5394726A (en) * | 1992-10-09 | 1995-03-07 | United States Surgical Corporation | Apparatus and method for positioning and pressing curved surgical needles |
| EP0650786A1 (en) * | 1993-10-08 | 1995-05-03 | United States Surgical Corporation | Cartridge fed apparatus for forming curved rectangular bodied needles |
| EP0650784A1 (en) * | 1993-10-08 | 1995-05-03 | United States Surgical Corporation | Apparatus for forming curved rectangular bodied needles |
| EP0652060A1 (en) * | 1993-10-08 | 1995-05-10 | United States Surgical Corporation | Method of, and apparatus for, forming curved rectangular bodied needles |
| US5425258A (en) * | 1992-10-09 | 1995-06-20 | United States Surgical Corporation | Needle curving apparatus |
| US5431036A (en) * | 1992-09-02 | 1995-07-11 | United States Surgical Corporation | Needle curving apparatus |
| US5553477A (en) * | 1994-10-07 | 1996-09-10 | United States Surgical Corporation | Progressive die apparatus and method for forming surgical incision members |
| EP0649632B1 (en) * | 1993-10-20 | 2000-01-26 | Ethicon, Inc. | Process for the manufacture of suture needles |
| EP2039300A1 (en) * | 2006-07-12 | 2009-03-25 | MANI Inc. | Triangular suture needle |
| CN102950235A (en) * | 2012-11-23 | 2013-03-06 | 江苏风和医疗器材有限公司 | Preparation method of anastomosis nail |
-
1987
- 1987-06-08 JP JP62142806A patent/JPS63309338A/en active Granted
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5100432A (en) * | 1990-02-22 | 1992-03-31 | Matsutani Seisakusho Co., Ltd. | Surgical suture needle of the taper point type |
| US5287721A (en) * | 1992-08-12 | 1994-02-22 | United States Surgical Corporation | Apparatus and method for forming curved needles |
| US5431036A (en) * | 1992-09-02 | 1995-07-11 | United States Surgical Corporation | Needle curving apparatus |
| EP0591995A3 (en) * | 1992-10-09 | 1996-11-20 | United States Surgical Corp | Apparatus for orienting a curved workpiece |
| US5626043A (en) * | 1992-10-09 | 1997-05-06 | United States Surgical Corporation | Apparatus for forming curved rectangular bodied needles |
| US5394726A (en) * | 1992-10-09 | 1995-03-07 | United States Surgical Corporation | Apparatus and method for positioning and pressing curved surgical needles |
| EP0591995A2 (en) * | 1992-10-09 | 1994-04-13 | United States Surgical Corporation | Apparatus for orienting a curved workpiece |
| US5526666A (en) * | 1992-10-09 | 1996-06-18 | United States Surgical Corporation | Apparatus for forming curved rectangular bodied needles |
| US5457978A (en) * | 1992-10-09 | 1995-10-17 | United States Surgical Corporation | Cartridge fed apparatus for forming curved rectangular bodied needles |
| US5425258A (en) * | 1992-10-09 | 1995-06-20 | United States Surgical Corporation | Needle curving apparatus |
| US5388441A (en) * | 1992-12-29 | 1995-02-14 | United States Surgical Corporation | Needle curver with automatic feed |
| US5450739A (en) * | 1992-12-29 | 1995-09-19 | United States Surgical Corporation | Needle curver with automatic feed |
| EP0652060A1 (en) * | 1993-10-08 | 1995-05-10 | United States Surgical Corporation | Method of, and apparatus for, forming curved rectangular bodied needles |
| EP0650784A1 (en) * | 1993-10-08 | 1995-05-03 | United States Surgical Corporation | Apparatus for forming curved rectangular bodied needles |
| EP0650785A1 (en) * | 1993-10-08 | 1995-05-03 | United States Surgical Corporation | Apparatus for positioning and pressing curved surgical needles |
| EP0650786A1 (en) * | 1993-10-08 | 1995-05-03 | United States Surgical Corporation | Cartridge fed apparatus for forming curved rectangular bodied needles |
| EP0649632B1 (en) * | 1993-10-20 | 2000-01-26 | Ethicon, Inc. | Process for the manufacture of suture needles |
| US5553477A (en) * | 1994-10-07 | 1996-09-10 | United States Surgical Corporation | Progressive die apparatus and method for forming surgical incision members |
| EP2039300A1 (en) * | 2006-07-12 | 2009-03-25 | MANI Inc. | Triangular suture needle |
| EP2039300A4 (en) * | 2006-07-12 | 2015-04-01 | Mani Inc | Triangular suture needle |
| CN102950235A (en) * | 2012-11-23 | 2013-03-06 | 江苏风和医疗器材有限公司 | Preparation method of anastomosis nail |
| CN102950235B (en) * | 2012-11-23 | 2015-02-04 | 江苏风和医疗器材有限公司 | Preparation method of anastomosis nail |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0327295B2 (en) | 1991-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63309338A (en) | Production of curved suture needle | |
| US20080121008A1 (en) | Cylindorical rod and method for manufacturing the same | |
| JP2017056289A (en) | Injection needle and production method thereof | |
| JPH11276492A (en) | Surgical needle and forming device for needle material of surgical needle | |
| JPS58133909A (en) | End forming method of stabilizer for vehicle suspension | |
| JP2599090B2 (en) | Suture needle, suture needle with thread, and method of manufacturing the same | |
| JP2530073B2 (en) | Processing method for pipe with constriction | |
| JP3095062B2 (en) | Manufacturing method of suture needle | |
| JP3129753B2 (en) | Eyeless suture needle with thread, crimping type, and method of manufacturing crimping type | |
| JPS6171137A (en) | Forming method of lead wire of electronic parts | |
| JPH11165485A (en) | Manufacture of ball-point pen tip | |
| JPS624345Y2 (en) | ||
| JPS6222697B2 (en) | ||
| JPS5930487B2 (en) | Composite roll for rolling | |
| JPS597421A (en) | Manufacture of metallic bat | |
| JPH0719633Y2 (en) | Round wire feeder | |
| JPS62166026A (en) | Roll forming method | |
| JPS61123422A (en) | Device for forming shadow mask | |
| JP2001030348A (en) | Resin pipe bending apparatus | |
| JPS5916627A (en) | Method and apparatus for manufacturing conical pipe | |
| JPH0138574B2 (en) | ||
| JPH07250844A (en) | Manufacture of bent product of sheet metal such as tweezers | |
| JPS629543B2 (en) | ||
| JP2002345967A (en) | Production method for measuring tube of radiation | |
| JPS60145220A (en) | Manufacture of molding |
Legal Events
| 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 |
|
| LAPS | Cancellation because of no payment of annual fees |