JP2012050477A - Suture needle coated with silicone and method for manufacturing the same - Google Patents

Suture needle coated with silicone and method for manufacturing the same Download PDF

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JP2012050477A
JP2012050477A JP2010193219A JP2010193219A JP2012050477A JP 2012050477 A JP2012050477 A JP 2012050477A JP 2010193219 A JP2010193219 A JP 2010193219A JP 2010193219 A JP2010193219 A JP 2010193219A JP 2012050477 A JP2012050477 A JP 2012050477A
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Prior art keywords
silicone
suture needle
needle
suture
tip
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Kazuhiko Matsutani
和彦 松谷
Yuzo Matsuda
祐三 松田
Shinichi Akutsu
真一 阿久津
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Mani Inc
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Mani Inc
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Priority to JP2010193219A priority Critical patent/JP2012050477A/en
Priority to PCT/JP2011/069390 priority patent/WO2012029689A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21GMAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G1/00Making needles used for performing operations
    • B21G1/006Special treatments of pins or needles, e.g. annealing, straightening
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00526Methods of manufacturing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/0084Material properties low friction
    • A61B2017/00849Material properties low friction with respect to tissue, e.g. hollow organs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06004Means for attaching suture to needle
    • A61B2017/06028Means for attaching suture to needle by means of a cylindrical longitudinal blind bore machined at the suture-receiving end of the needle, e.g. opposite to needle tip

Abstract

PROBLEM TO BE SOLVED: To provide a suture needle coated with silicone and a method for manufacturing the same which can shorten a time required for application of the silicone (including drying time).SOLUTION: A plurality of suture needles 10 each of which has a body part 15 having a prescribed cross-sectional shape and a tapered part 14 being continuous to the body part 15 and gradually tapered toward a sharply pointed needle tip 13, are supported on a surface. Liquid silicone is sprayed on the tapered part 14 from one side of the supported suture needle 10 so as to apply the silicone down to the other side of the tapered part 14 and dried at room temperature. After this application is repeated in a plurality of times, the silicone is dried by heating.

Description

本発明は外科手術に使用する縫合針に関し、特に、縫合針にシリコーンを塗布した縫合針とそれを製造する方法とに関する。   The present invention relates to a suture needle used in a surgical operation, and more particularly to a suture needle in which silicone is applied to a suture needle and a method for manufacturing the suture needle.

医療用縫合針は、その用途に応じて多様な種類がある。その中で代表的なものとして、角針、丸針が挙げられる。角針は、一般的に皮膚、筋肉等の硬組織の縫合に用いられ、鋭利に尖らせた先端と多角錘状のテーパ部と、その基端側に形成され所定の断面形状を有する胴部と、を有し、テーパ部における所定の稜線がそれぞれ切刃となって組織を切り開いていくものである。胴部の断面形状は、三角形、四角形、等の多角形の他、円形や長円形状のものがある。   There are various types of medical suturing needles depending on the application. Among them, typical examples include a square needle and a round needle. A square needle is generally used for suturing hard tissues such as skin and muscles, and has a sharply sharpened tip, a polygonal tapered portion, and a trunk having a predetermined cross-sectional shape formed on the base end side. The predetermined ridgeline in the taper portion becomes a cutting edge to cut open the structure. The cross-sectional shape of the body portion includes a polygonal shape such as a triangle, a quadrangle, etc., and a circular shape or an oval shape.

丸針は、先端と、円錐状のテーパ部と、その基端側に形成され所定の断面形状を有する胴部と、を有する。円錐状のテーパ部や胴部の断面形状は、円形が普通であるが、ほぼ平行な2平面を有する長円形状や、4平面を有するものや、鼓形状のものもある。ただし、角針のように稜線を鋭くして切刃として使用することはない。   The round needle has a distal end, a conical tapered portion, and a body portion formed on the proximal end side and having a predetermined cross-sectional shape. The cross-sectional shape of the conical taper portion and the body portion is usually circular, but there are an oval shape having two substantially parallel planes, a shape having four planes, and a drum shape. However, it is not used as a cutting blade with a sharp ridgeline like a square needle.

丸針は、針先端で組織に穿孔した後、テーパ部でこの穴を拡大していくが、角針のように切刃が無いので、組織をみだりに切断することがない。そのため、穿孔部の生体組織が糸の表面に密着し、縫合部から体液などが漏洩することを防止できる。このような特性から、丸針は、主として血管や、軟組織の縫合に用いられている。   The round needle punctures the tissue at the tip of the needle and then expands this hole at the taper portion. However, since there is no cutting edge like a square needle, the tissue is not cut unnecessarily. Therefore, it is possible to prevent the biological tissue of the perforated part from being in close contact with the surface of the thread and leaking body fluid from the sutured part. Because of these characteristics, round needles are mainly used for sutures of blood vessels and soft tissues.

医療用縫合針は、通常、次のようにして製造される。まず、所定の太さの線材を所定の長さに切断する。次に、この素材の一端に、縫合糸との係合部を形成する。この係合部としては、たとえば、軸方向に穿設された止まり穴や、弾機孔などがある。次いで、角針の場合は素材を所定の断面形状にプレス加工し胴部を形成した後、研削加工により切刃を形成し、テーパ部および先端を形成する。丸針の場合は、先端部分を砥石等により研削し、テーパ部および先端を形成する。そして、粗いバフ研磨や、細かい砥石等による研削を行った後、細かいバフ研磨や電解研磨等により研削条を取り去って鏡面に仕上げ、所定の形状に曲げ、熱処理、表面処理をして完成する。   A medical suture needle is usually manufactured as follows. First, a wire having a predetermined thickness is cut into a predetermined length. Next, an engaging portion with a suture is formed at one end of the material. Examples of the engaging portion include a blind hole drilled in the axial direction and a bullet hole. Next, in the case of a square needle, the material is pressed into a predetermined cross-sectional shape to form a body portion, and then a cutting edge is formed by grinding to form a tapered portion and a tip. In the case of a round needle, the tip portion is ground with a grindstone or the like to form a tapered portion and a tip. Then, after rough buffing or grinding with a fine grindstone or the like, the grinding strip is removed by fine buffing or electrolytic polishing to finish it into a mirror surface, bent into a predetermined shape, heat-treated, and surface-treated.

ところで、針の切れ味、すなわち刺通抵抗の低減については、ユーザからの要求レベルが非常に高くなってきている。三角縫合針など、角錐型のテーパ部における切刃(エッジ)が組織を切り開きながら進む角針であっても、生体組織と針の表面との摩擦抵抗が大きくなる場合は刺通抵抗を増加させる原因になる為、刺通抵抗を可及的に低減させるための研究が日々行われている。そして、切刃の無い丸針は、特に刺通抵抗を低減させることが難しい。   By the way, the level of demand from users for the reduction of needle sharpness, that is, piercing resistance, has become very high. Even if the cutting edge (edge) of the pyramidal taper portion such as a triangular suture needle is a square needle that advances while opening the tissue, if the frictional resistance between the living tissue and the surface of the needle increases, the piercing resistance is increased. Because of this, research is being conducted daily to reduce piercing resistance as much as possible. And it is difficult to reduce especially piercing resistance with the round needle without a cutting blade.

この問題に対し、従来は、針の表面を鏡面に仕上げることで刺通抵抗を下げるようにしてきた。すなわち、上記の製造工程における、仕上げの表面処理として、バフ研磨仕上法、電解研磨仕上法、化学研磨仕上法などを行うことにより鏡面を得るようにしていた。   Conventionally, the piercing resistance has been lowered by finishing the surface of the needle into a mirror surface. That is, a mirror surface is obtained by performing a buffing finishing method, an electrolytic polishing finishing method, a chemical polishing finishing method, or the like as a finishing surface treatment in the above manufacturing process.

バフ研磨仕上げは、細かな砥粒を付けた木綿布、フェルトなどを回転させて被研磨材に当て、砥粒で研磨仕上げをするもので、針先端部や胴部を鏡面状に仕上げることができる。   The buffing finish is made by rotating cotton cloth with fine abrasive grains, felt, etc., against the material to be polished, and polishing with the abrasive grains. The needle tip and barrel can be mirror finished. it can.

電解研磨仕上法は、電解液中に縫合針を浸漬して、電気を通して電解させ、その表面を溶解させるものである。化学研磨仕上法は、電解研磨仕上法とは異なって、電流を強制的に流さずに酸によって針の表面を溶解するようにした方法である。この場合でも仕上げ研磨された表面は鏡面状となっている。   In the electrolytic polishing finishing method, a suture needle is immersed in an electrolytic solution, electrolyzed by electricity, and the surface thereof is dissolved. Unlike the electrolytic polishing finishing method, the chemical polishing finishing method is a method in which the surface of the needle is dissolved by an acid without forcing a current to flow. Even in this case, the finish-polished surface is mirror-like.

しかし、上記の仕上げ方法では、肉眼で見る限りは平滑な鏡面であるが、顕微鏡的に視ると、鏡面ではない。たとえば、バフ仕上げの場合は、砥粒による多数の筋状の凹凸がある。   However, the above finishing method has a smooth mirror surface as far as the naked eye can see, but it is not a mirror surface when viewed microscopically. For example, in the case of buffing, there are many streaky irregularities due to abrasive grains.

また、電解研磨の場合でも、顕微鏡的に視ると、電解時に発生するガスが表面に付着することによって浅いクレータ状の凹凸ができているのが確認できる。化学研磨の場合には、電解研磨と同じガスによるクレータ状の凹凸の他に、材料の結晶粒ごとの研磨され易い結晶粒と、そうでない結晶粒とによっても針の表面に浅い凹凸が形成されている。   In addition, even in the case of electropolishing, it can be confirmed by microscopic observation that a gas generated during electrolysis adheres to the surface to form shallow crater-like irregularities. In the case of chemical polishing, in addition to crater-like irregularities by the same gas as electrolytic polishing, shallow irregularities are formed on the surface of the needle by crystal grains that are easily polished for each crystal grain of the material and crystal grains that are not polished. ing.

このように、鏡面仕上げだけでは、刺通抵抗を低減させるには限度がある。これに対し、テーパ部にシリコーンをコーティングすることも行われている。   Thus, there is a limit in reducing the piercing resistance only by the mirror finish. On the other hand, silicone is also coated on the taper portion.

特許文献1には、アミノアルキルシロキサン及びそれと共重合し得る少なくとも一種のその他のシロキサンを含むシリコーン処理材料を使用することで、通常のシリコーンコーティングより刺通抵抗を低減できることが記載されている。   Patent Document 1 describes that by using a silicone treatment material containing an aminoalkylsiloxane and at least one other siloxane copolymerizable therewith, it is possible to reduce the piercing resistance as compared with a normal silicone coating.

特許文献2には、丸針の先端のテーパ部の一部に軸方向に沿って凹凸条面を形成し、その上からシリコーンをコーティングした縫合針を提案している。凹凸条面により縫合針と生体組織との間に、微細な隙間ができ、生体組織との接触面積が減少することで刺通抵抗を下げることができる。   Patent Document 2 proposes a suture needle in which an uneven surface is formed along the axial direction in a part of a tapered portion at the tip of a round needle and silicone is coated thereon. The rugged surface creates a fine gap between the suture needle and the living tissue, and the puncture resistance can be lowered by reducing the contact area with the living tissue.

特許文献3には、縫合針を形成する金属との密着力の高いシリコーンを適当な間隔を開けた縞状又は斑状に塗布し、縫合針の表面に凹凸を形成し、その上から潤滑性の高いシリコーンを塗布したものを提案している。縞状又は斑状に塗布されたシリコーンが生体組織と接触することで、接触面積を減らし、刺通抵抗を下げることができる。   In Patent Document 3, silicone having high adhesion to the metal forming the suturing needle is applied in stripes or spots with an appropriate interval to form irregularities on the surface of the suturing needle. Proposal of high silicone applied. When the silicone applied in stripes or spots contacts the living tissue, the contact area can be reduced and the penetration resistance can be reduced.

特開平4−317644号JP-A-4-317644 特開平11−70113号JP-A-11-70113 特開2009−160006号JP 2009-160006

従来のシリコーンの塗布方法は、シリコーン液に縫合針を浸漬する方法であり、縫合針全体にシリコーンを塗布している。しかし、縫合針全体に塗布する必要はないので、シリコーンの無駄が多かった。また、縫合針の刺通抵抗は、一般に、刺通回数が増えるに従って、増加する傾向があり、刺通回数が増えても刺通抵抗の増加が少ない縫合針の出現が望まれていた。   A conventional silicone application method is a method in which a suture needle is immersed in a silicone liquid, and silicone is applied to the entire suture needle. However, since it is not necessary to apply to the whole suture needle, there was a lot of waste of silicone. In general, the puncture resistance of a suture needle tends to increase as the number of punctures increases, and there has been a demand for the appearance of a suture needle with little increase in puncture resistance even when the number of punctures increases.

本発明は、斯かる実情に鑑み、刺通回数が増えても刺通抵抗の増加が少なく、シリコーンの使用量を減らすことができるシリコーンを塗布した縫合針とその製造方法を提供することを目的としている。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide a suture needle coated with silicone that can reduce the amount of silicone used even when the number of times of piercing increases, and a method for manufacturing the same. It is said.

上記の目的を達成するために本発明のシリコーンを塗布した縫合針は、所定の断面形状を有する胴部と、該胴部に続き、先端に向かって徐々に細くなるテーパ部と、を有する縫合針であって、該縫合針が、該縫合針の一方の側面側から液状のシリコーンを噴霧されてテーパ部の他方の側面側までシリコーンを塗布され、少なくとも前記胴部の一部にシリコーンが付着しない部分を有することを特徴としている。
前記縫合針の先端にシリコーンが塗布されている構成としたり、前記シリコーンが付着しない部分が、前記胴部の前記テーパ部に隣接する部分を含む構成としたりすることができる。
In order to achieve the above object, a suture needle coated with silicone according to the present invention has a trunk portion having a predetermined cross-sectional shape, and a suture portion that continues to the trunk portion and has a tapered portion that gradually narrows toward the tip. The needle is sprayed with liquid silicone from one side of the suture needle to apply the silicone to the other side of the tapered portion, and the silicone adheres to at least a part of the body. It is characterized by having a portion that does not.
It can be set as the structure by which the silicone was apply | coated to the front-end | tip of the said suture needle, or it can be set as the structure in which the part which the said silicone does not adhere includes the part adjacent to the said taper part of the said trunk | drum.

上記の目的を達成するために本発明のシリコーンを塗布した縫合針の製造方法は、所定の断面形状を有する胴部と、該胴部に続き、先端に向かって徐々に細くなるテーパ部と、を有する縫合針を支持する工程と、支持された縫合針の一方側から液状のシリコーンを噴霧して前記テーパ部の他方側までシリコーンを塗布する工程と、を有することを特徴としている。   In order to achieve the above object, a method for producing a suture needle coated with silicone according to the present invention includes a trunk portion having a predetermined cross-sectional shape, a tapered portion that gradually narrows toward the tip, following the trunk portion, And a step of spraying liquid silicone from one side of the supported suture needle to apply the silicone to the other side of the tapered portion.

前記縫合針を支持する工程が、縫合針を平坦な載置面上に載置して縫合針を前記胴部で支持する工程であり、前記テーパ部の前記胴部より細い部分が前記載置面から浮くように支持する工程である構成としたり、前記液状のシリコーンを噴霧して塗布する工程が複数回行われ、各噴霧工程の後で前記シリコーンを加熱乾燥する工程が行われる構成としたり、最後の噴霧の後にのみ前記シリコーンを加熱乾燥する工程が行われる構成としたり、することができる。   The step of supporting the suturing needle is a step of placing the suturing needle on a flat placement surface and supporting the suturing needle with the body portion, and a portion narrower than the body portion of the tapered portion is placed as described above. It is configured to be a process of supporting to float from the surface, or a process of spraying and applying the liquid silicone is performed a plurality of times, and a process of heating and drying the silicone is performed after each spraying process. In addition, it may be configured such that the step of heating and drying the silicone is performed only after the last spraying.

従来の噴霧塗布では、縫合針の一方の側面側からシリコーンを塗布し、次に他方の側面側からシリコーンを塗布していた。また、塗布対象としては、縫合針の全長が対象となっていた。これに対し、本発明によれば、縫合針の片側からシリコーンを噴霧して塗布し、かつ、縫合針の全長には塗布する必要がないので、塗布時間を短縮し、シリコーンの無駄を減らすことができる。また、切味に影響を及ぼす先端部分の全周にはしっかりとシリコーンが塗布され、刺通回数が増えても、刺通抵抗の増加を抑えることができる、という優れた効果を奏する。   In conventional spray application, silicone is applied from one side of the suture needle, and then silicone is applied from the other side. In addition, the entire length of the suture needle is the target for application. On the other hand, according to the present invention, the silicone is sprayed and applied from one side of the suture needle, and it is not necessary to apply the entire length of the suture needle, so the application time is shortened and the waste of the silicone is reduced. Can do. In addition, silicone is firmly applied to the entire circumference of the tip portion that affects the sharpness, and even if the number of times of piercing increases, an increase in piercing resistance can be suppressed.

特に、アイレス縫合針の場合は、縫合糸用に縫合針の基端面から軸に沿って開けた止まり穴の内にシリコーンが入ると、縫合糸の固定力が低下する。そのため、従来は止まり穴に水を入れてシリコーンの進入を防止していた。しかし、細く小さい縫合針の場合、止まり穴の中に水が入りにくく、シリコーンの進入防止が困難であった。これに対し、本発明では、縫合針の必要な部分のみにシリコーンを塗布することができ、簡単に、止まり穴を避けてシリコーンを噴霧塗布することができる、という効果もある。   In particular, in the case of an eyeless suture needle, if silicone enters a blind hole formed along the axis from the proximal end surface of the suture needle for suture, the fixing force of the suture is reduced. Therefore, conventionally, water has been put into the blind hole to prevent silicone from entering. However, in the case of a thin and small suture needle, it is difficult for water to enter the blind hole, and it is difficult to prevent silicone from entering. On the other hand, in the present invention, silicone can be applied only to a necessary portion of the suture needle, and there is also an effect that the silicone can be easily applied by spraying while avoiding the blind hole.

本発明の縫合針の斜視図である。It is a perspective view of the suturing needle of the present invention. 縫合針を複数個、載置台上に並べて載置した状態を示す平面図である。It is a top view which shows the state which arranged the suture needle side by side on the mounting base. 図2のA、B、C断面の状態を示す図である。It is a figure which shows the state of the A, B, C cross section of FIG. シリコーン液を噴霧した状態を示す図で、(a)は図3の(a)又は(b)における噴霧状態を示す。(b)は、図3(c)における噴霧状態を示す図である。It is a figure which shows the state which sprayed the silicone liquid, (a) shows the spraying state in (a) or (b) of FIG. (B) is a figure which shows the spray state in FIG.3 (c). シリコーンの塗布装置の構成を示す図である。It is a figure which shows the structure of the coating device of silicone. 刺通回数に対する縫合針の刺通抵抗の変化を示すグラフである。It is a graph which shows the change of the puncture resistance of a suture needle with respect to the puncture frequency.

以下、本発明の実施の形態を添付図面を参照して説明する。
図1は、本発明の縫合針の斜視図である。この縫合針10は、アイレス縫合針で、従来から公知の方法により製造されたものである。
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the suture needle of the present invention. The suturing needle 10 is an eyeless suturing needle and is manufactured by a conventionally known method.

図1に示すように、縫合針10は基端部11の一方の端部には基端面11aがあり、この基端面11aにレーザー加工法、電子ビーム加工法、放電加工法、ドリリング等の加工法によって止まり穴12が形成されている。また縫合針10の先端には鋭利な針先13が形成されており、この針先13から徐々に径が太くなるテーパ部14が形成されている。   As shown in FIG. 1, the suture needle 10 has a proximal end surface 11a at one end of the proximal end portion 11, and this proximal end surface 11a is processed by a laser machining method, an electron beam machining method, an electrical discharge machining method, drilling, or the like. A blind hole 12 is formed by the method. Further, a sharp needle tip 13 is formed at the distal end of the suture needle 10, and a taper portion 14 whose diameter gradually increases from the needle tip 13 is formed.

テーパ部14の基端部11側は、基端部11と同じ外径の胴部15となっている。基端部11がほぼ直線状であるのに対し、胴部15は湾曲している点で相違している。また、基端部11は断面形状が円であるが、胴部15の断面形状は円とは限らず、ほぼ平行な2平面を有する長円形状や、4平面を有するものや、鼓形状のものもある。   The base end portion 11 side of the taper portion 14 is a body portion 15 having the same outer diameter as that of the base end portion 11. The base end portion 11 is substantially linear, but the trunk portion 15 is different in that it is curved. In addition, the base end portion 11 has a circular cross-sectional shape, but the cross-sectional shape of the body portion 15 is not limited to a circle, and an oval shape having two substantially parallel planes, one having four planes, There are also things.

本発明の縫合針としては、図1に示すようなアイレス縫合針に限定されず、アイド縫合針でもよいし、丸針にも限定されず、三角針などの角針でもよい。また、先端を鈍に構成したものでも良い。   The suture needle of the present invention is not limited to the eyeless suture needle as shown in FIG. 1, but may be an eyed suture needle or a round needle, and may be a square needle such as a triangular needle. Further, the tip may be blunt.

縫合糸20としては、太さ、材質(ナイロン、シルク等)、モノフィラメントかマルチフィラメントか、等の構造等、多数の異なる種類のものが提供されている。そして縫合すべき生体組織及び縫合部位に応じて適切な種類の縫合糸を選択して用いている。縫合糸20は、その先端が基端部の止まり穴12に挿入され、プレス機などで止まり穴12を潰してかしめることによって縫合針10の基端部に固定される。縫合針10は、縫合に必要な長さの糸が最初から固定され、アイド針のように糸を孔に挿通する手間が不要であるという利点を有する。   Many different types of sutures 20 are provided, such as thickness, material (nylon, silk, etc.), monofilament or multifilament, and the like. An appropriate type of suture is selected and used according to the living tissue to be sutured and the suture site. The distal end of the suture 20 is inserted into the blind hole 12 at the proximal end, and is fixed to the proximal end of the suture needle 10 by crushing and crimping the blind hole 12 with a press or the like. The suture needle 10 has an advantage that a thread of a length necessary for the suture is fixed from the beginning, and the trouble of inserting the thread into the hole like an idle needle is unnecessary.

図2は、図1に示す縫合針10を複数個、載置台21上に並べて載置した状態を示す。このように載置台21上に縫合針10を並べて、載置台21の上方からシリコーン溶液を噴霧する。   FIG. 2 shows a state in which a plurality of suture needles 10 shown in FIG. 1 are placed side by side on the placement table 21. In this way, the suture needles 10 are arranged on the mounting table 21 and the silicone solution is sprayed from above the mounting table 21.

図3は、図2のA、B、C断面の状態を示す図である。図2のAは縫合針10の先端近傍の断面で、図2のBはテーパ部14の途中における断面である。縫合針10は、図3(c)に示すように、基端部11と胴部15とで、載置台21の上面、すなわち、載置面21aに支持されているので、これらに比べて径が細いテーパ部は、図3(a)、(b)のように、各断面は空中に浮いた状態になっている。   FIG. 3 is a diagram illustrating states of cross sections A, B, and C in FIG. 2. 2A is a cross section in the vicinity of the distal end of the suturing needle 10, and B in FIG. 2 is a cross section in the middle of the tapered portion 14. As shown in FIG. 3C, the suture needle 10 is supported by the upper surface of the mounting table 21, that is, the mounting surface 21a, by the base end portion 11 and the trunk portion 15, and therefore has a diameter larger than these. As shown in FIGS. 3 (a) and 3 (b), the thin taper portion has each cross-section floating in the air.

図4は、シリコーン液を噴霧した状態を示す図で、(a)は図3の(a)又は(b)における噴霧状態を示す。(b)は、図3(c)における噴霧状態を示す図である。   FIG. 4 is a view showing a state in which the silicone liquid is sprayed, and (a) shows the sprayed state in FIG. 3 (a) or (b). (B) is a figure which shows the spray state in FIG.3 (c).

図4(a)に示すように、縫合針10の断面の直径が基端部11よりも細いところでは、縫合針10が載置台21の載置面21aから離れた空間に浮かんでいる。一方、噴霧されたシリコーンは、小さな粒子30となって縫合針の近くに浮かんでいる。シリコーンの粒子30のあるものはゆっくりと載置面21aに向かって降下し、あるものはやや早く降下し、あるものは昇降しながら空中を漂っている。そして、縫合針10のテーパ部14や胴部15や基端部11等に近づいた粒子30は、その部分に付着し、シリコーン層31を形成していく。   As shown in FIG. 4A, the suture needle 10 floats in a space away from the placement surface 21 a of the placement table 21 where the diameter of the cross section of the suture needle 10 is narrower than the base end portion 11. On the other hand, the sprayed silicone becomes small particles 30 and floats near the suture needle. Some of the silicone particles 30 slowly descend toward the mounting surface 21a, some descend slightly faster, and some drift in the air while moving up and down. Then, the particles 30 approaching the taper portion 14, the body portion 15, the base end portion 11, and the like of the suture needle 10 adhere to the portions and form the silicone layer 31.

テーパ部14の基端部11よりも細い部分は、図4(a)に示すように載置面21aとの間に隙間があるので、シリコーンの粒子30は、縫合針10の上面と両側面は勿論、下面にも付着し、結局、縫合針10の全周に渡ってしっかりとシリコーン層31が形成される。   The portion thinner than the base end portion 11 of the taper portion 14 has a gap between the placement surface 21a as shown in FIG. 4A, so that the silicone particles 30 are formed on the upper surface and both side surfaces of the suture needle 10. Of course, it also adheres to the lower surface, and eventually, the silicone layer 31 is firmly formed over the entire circumference of the suture needle 10.

一方、図4(b)に示すように、胴部15や基端部11は、下側が載置面21aに接触しているので、上側と両側面にはシリコーンの粒子30が付着するが、下側にはシリコーンが付着しない。   On the other hand, as shown in FIG. 4 (b), since the lower portion of the body portion 15 and the base end portion 11 is in contact with the placement surface 21a, silicone particles 30 adhere to the upper side and both side surfaces. Silicone does not adhere to the lower side.

このような噴霧によるシリコーン液の塗布方法は、シリコーンの粒子30が小さく、均等に付着するので、室温でも短時間で乾燥する。   In the method of applying the silicone liquid by spraying, since the silicone particles 30 are small and adhere uniformly, they are dried in a short time even at room temperature.

乾燥したら、その上から再度シリコーンを同様に噴霧して塗布し、室温で乾燥させる。これを繰り返し、複数層(ここでは4層)のシリコーン層31が形成されたら、180℃に加熱し、8時間掛けて乾燥する。この加熱乾燥が完了すれば、縫合針10は完成となる。完成した縫合針10は、胴部15の載置面21aと接触していた線接触部分を中心にして両側にシリコーンが塗布されていない部分を有する。このシリコーンが塗布されていない部分は、胴部15のテーパ部14に隣接する部分から始まり、胴部15のシリコーンが塗布された範囲全体に及んでいる。   After drying, the silicone is sprayed again from above and applied at the room temperature. This process is repeated, and when a plurality of layers (here, four layers) of silicone layers 31 are formed, the layers are heated to 180 ° C. and dried for 8 hours. When this heat drying is completed, the suture needle 10 is completed. The completed suture needle 10 has portions where silicone is not applied on both sides with the line contact portion in contact with the placement surface 21a of the trunk portion 15 as the center. The portion where the silicone is not applied starts from a portion adjacent to the taper portion 14 of the trunk portion 15 and extends over the entire range where the silicone of the trunk portion 15 is applied.

本発明では、噴霧による塗布なので、乾燥が早いため、最後の噴霧塗装がされた後、1回だけ加熱乾燥すればよく、従来塗装ごとに行っていた加熱乾燥を短時間の室温乾燥に置き換えることができる。したがって、加熱乾燥に要する時間を大幅に短縮することができる。さらに、乾燥が早いため、シリコーンの濃度を浸漬塗布による場合よりも濃くすることができ、膜厚が厚いシリコーンを均一に塗布することができる。浸漬による場合、シリコーンの濃度が1%以上となる場合は乾燥時間が掛かるため採用することは好ましくないが、噴霧による場合は、1%以上の濃度を採用することが好ましい。   In the present invention, since it is applied by spraying, drying is fast, so after the last spray coating is applied, it is only necessary to heat and dry once, replacing the heat drying conventionally performed for each coating with short-time room temperature drying. Can do. Therefore, the time required for heat drying can be greatly shortened. Furthermore, since the drying is fast, the concentration of silicone can be made higher than that by dip coating, and a thick silicone can be uniformly applied. In the case of immersion, when the concentration of silicone is 1% or more, it is not preferable to employ it because it takes a long time to dry, but in the case of spraying, it is preferable to employ a concentration of 1% or more.

図5は、本発明のシリコーンを塗布した縫合針の製造装置の構成を示す図である。製造装置は、搬送装置としてのベルトコンベア35と、ベルトコンベア35の搬送経路の途中に設けられたシリコーンの噴霧装置としてのノズル36と、ベルトコンベア35に搬送される載置台21と、ベルトコンベア35の端部に設けられた乾燥炉37とから構成される。   FIG. 5 is a diagram showing a configuration of a suture needle manufacturing apparatus to which the silicone of the present invention is applied. The manufacturing apparatus includes a belt conveyor 35 serving as a transport device, a nozzle 36 serving as a silicone spraying device provided in the middle of the transport path of the belt conveyor 35, a mounting table 21 transported to the belt conveyor 35, and a belt conveyor 35. And a drying furnace 37 provided at the end of the.

載置台21の載置面21aには、図2に示すように多数の縫合針10が載置されている。載置台21が搬送されて、ノズル36の下に達すると、ノズルからシリコーンが噴霧され、塗布される。塗布されたシリコーンは、載置台21がベルトコンベア35で移動して次のノズル36に達するまでに室温で乾燥し、次のノズル36により噴霧による塗布が行われる。このように、噴霧→乾燥→噴霧→乾燥を繰り返し、4回の塗布がされ、ベルトコンベア35の最終端で、乾燥炉37に送り込まれ、180℃、8時間の加熱乾燥がおこなわれることになる。なお、乾燥炉37は、ベルトコンベア35の端部に設けることに限定されるものではなく、ベルトコンベア35から離れた場所に設置されていてもよい。   A large number of suture needles 10 are placed on the placement surface 21a of the placement table 21 as shown in FIG. When the mounting table 21 is conveyed and reaches below the nozzle 36, silicone is sprayed from the nozzle and applied. The applied silicone is dried at room temperature until the mounting table 21 moves on the belt conveyor 35 and reaches the next nozzle 36, and is applied by spraying with the next nozzle 36. In this way, spraying → drying → spraying → drying is repeated four times and applied to the final end of the belt conveyor 35 and sent to the drying furnace 37 where it is heated and dried at 180 ° C. for 8 hours. . The drying furnace 37 is not limited to being provided at the end of the belt conveyor 35, and may be installed at a location away from the belt conveyor 35.

本発明の実施例では、噴霧によるシリコーンの塗布を4回行っているが、回数は、特に制限されない。ただし、1回ではシリコーン膜の厚さが薄いので、複数回繰り返すことが望ましい。   In the embodiment of the present invention, the silicone is applied four times by spraying, but the number of times is not particularly limited. However, since the thickness of the silicone film is small at one time, it is desirable to repeat it several times.

なお、本発明では、縫合針10のテーパ部14にのみシリコーンを塗布すればよいので、縫合針の全長に渡るなど、広範囲にシリコーンを噴霧する必要はない。また、テーパ部14であっても、径が胴部15に近いところでは、全周にシリコーンが塗布されていない可能性がある。しかし、縫合針10の刺通抵抗は、本実施例のように丸針の場合、縫合針10の先端と、先端からやや進入した位置でピークになるので、先端からテーパ部14の長さの1/2程度までの部分が全周にシリコーンが塗布されていればよい。角針の場合でも、テーパ部14の最大径の位置付近でピークとなる。したがって、胴部15や基端部11には全くシリコーンが塗布されていなくても、刺通抵抗が上がることはない。   In the present invention, since it is sufficient to apply silicone only to the tapered portion 14 of the suture needle 10, it is not necessary to spray silicone over a wide range such as over the entire length of the suture needle. Further, even in the tapered portion 14, there is a possibility that silicone is not applied to the entire circumference where the diameter is close to the body portion 15. However, in the case of a round needle as in this embodiment, the piercing resistance of the suture needle 10 peaks at the tip of the suture needle 10 and a position slightly approaching from the tip, so that the length of the tapered portion 14 from the tip is the same. It suffices that silicone is applied to the entire circumference of up to about a half. Even in the case of a square needle, a peak occurs near the position of the maximum diameter of the tapered portion 14. Therefore, even if silicone is not applied to the body portion 15 and the base end portion 11 at all, the piercing resistance does not increase.

また、上記の実施例は、断面形状が丸い丸針について説明してきたが、三角針などの角形縫合針でも同様の効果を得ることができる。すなわち、三角針の場合、先端の尖った針先から、テーパ状の三角錐が形成され、胴部に達する形状となっている。そこで、三角錐の部分に噴霧によるシリコーンの塗布を行えばよい。角形縫合針でも、浸漬によるコーティングを行った場合、先端を含むエッジ付近のコーティングは薄くなってしまうため、噴霧による塗布は効果的である。   In the above embodiment, a round needle having a round cross-sectional shape has been described. However, a similar effect can be obtained with a square suture needle such as a triangular needle. That is, in the case of a triangular needle, a tapered triangular pyramid is formed from the pointed tip of the needle to reach the trunk. Therefore, the silicone may be applied to the triangular pyramid portion by spraying. Even with a square suture needle, when coating is performed by dipping, the coating in the vicinity of the edge including the tip becomes thin, so that application by spraying is effective.

図6は、刺通回数に対する縫合針の刺通抵抗の変化を示すグラフである。本発明から比較例3まで全て丸針で外径0.24mmの縫合針である。被刺通材は人造皮革ポールベアの厚さ0.45mmを使用して測定し、5本の平均値を記載した。刺通抵抗の単位はN(ニュートン)で、シリコーンの塗布方法は、以下の通りである。   FIG. 6 is a graph showing a change in the puncture resistance of the suture needle with respect to the number of punctures. All the needles from the present invention to Comparative Example 3 are round needles and have a 0.24 mm outer diameter. The piercing material was measured using an artificial leather pole bear having a thickness of 0.45 mm, and the average value of five was described. The unit of piercing resistance is N (Newton), and the method of applying silicone is as follows.

〔本発明〕上記の実施例のように、載置台21上に縫合針を載置し、上方からスプレーにより2.0%濃度のシリコーンを噴霧して塗装し、常温で短時間乾燥した。塗装場所は、縫合針の先端を含むテーパ部の全体と、一方の側面側である。塗装回数は4回で、最後の噴霧塗装の後180℃に加熱し、8時間掛けて加熱乾燥した。   [Invention] As in the above embodiment, a suturing needle was placed on the placing table 21 and sprayed with 2.0% silicone by spraying from above and dried at room temperature for a short time. The painting place is the entire tapered portion including the tip of the suture needle and one side surface side. The number of coatings was 4, and after the final spray coating, the coating was heated to 180 ° C. and heat-dried for 8 hours.

〔比較例1〕噴霧塗装に代えて、0.8%濃度のシリコーン液に縫合針全体を浸漬することで塗装した。塗装回数は4回である。各浸漬の後、180℃で8時間ずつ4回加熱乾燥した。   [Comparative Example 1] Instead of spray coating, the entire suture needle was dipped in a 0.8% concentration silicone liquid. The number of paintings is four times. After each immersion, it was heat-dried 4 times at 180 ° C. for 8 hours.

〔比較例2〕噴霧塗装に代えて、0.8%濃度のシリコーン液に縫合針全体を浸漬することで塗装した。塗装回数は4回で、各浸漬の後、180℃で1時間ずつ3回加熱乾燥し、最後の浸漬塗装の後180℃で8時間掛けて加熱乾燥した。
〔比較例3〕他社の市販品で、シリコーンの塗布条件は不明であった。
[Comparative Example 2] Instead of spray coating, the entire suture needle was immersed in a 0.8% concentration silicone liquid. The number of coatings was 4, and after each dipping, it was heat-dried 3 times at 180 ° C for 1 hour, and after the last dipping coating, it was heat-dried at 180 ° C for 8 hours.
[Comparative Example 3] It was a commercial product of another company, and the application condition of silicone was unknown.

図6のグラフを見ると、比較例2と比較例3は、刺通回数が増加するのに伴い、刺通抵抗が増加している。しかし、本発明と比較例1とは刺通回数が増加しても刺通抵抗が上昇しないことが分かる。本発明と比較例1は、ともに塗装回数は4回であるが、本発明では片側からの噴霧塗装であるのに対し、比較例1は浸漬塗装である。以上から、本発明によれば、従来のものより短時間で同じ性能のものを製造することができる、という格別の効果を奏することが分かる。また、本発明のものは噴霧塗装なので、シリコーンの量も少なくなり、無駄が少なくなる。さらに、本発明のものは噴霧塗装であり濃度を濃くしているため膜厚の厚いシリコーンが塗布でき、よって刺通回数が増加しても刺通抵抗が上昇しない、という結果が得られたと考えられる。   When the graph of FIG. 6 is seen, in the comparative example 2 and the comparative example 3, the piercing resistance increases as the number of piercings increases. However, it can be seen that the piercing resistance does not increase between the present invention and Comparative Example 1 even when the piercing frequency is increased. In the present invention and Comparative Example 1, the number of coatings is four, but in the present invention, spray coating is performed from one side, whereas Comparative Example 1 is immersion coating. From the above, it can be seen that according to the present invention, it is possible to produce a product having the same performance in a shorter time than a conventional product. Moreover, since the thing of this invention is spray coating, the quantity of silicone decreases and waste is also reduced. Furthermore, since the present invention is spray coating and the concentration is high, thick silicone can be applied, so that the result that the piercing resistance does not increase even when the piercing frequency is increased is obtained. It is done.

表1、表2は、別の実験例として、針の外径を0.14mm、0.18mm、0.24mm(以上は表1)、0.28mm、0.33mm、0.38mm(以上は表2)と変えていき、噴霧塗装と浸漬塗装とで、切味や切味耐久性がどのように変化するかについて、比較・検討した実験結果を示す表である。   Tables 1 and 2 show, as another experimental example, the outer diameters of the needles were 0.14 mm, 0.18 mm, 0.24 mm (above Table 1), 0.28 mm, 0.33 mm, 0.38 mm (above Table 2 shows the experimental results of comparison and examination on how sharpness and sharpness durability change between spray coating and immersion coating.

Figure 2012050477
Figure 2012050477

Figure 2012050477
Figure 2012050477

被刺通材は、外径0.28mm以下のものでは厚さ0.45mmのポールベアを使用し、外径0.33mm以上のものでは厚さ1.10mmのポールベアを使用した。   As the piercing material, a pole bear having a thickness of 0.45 mm was used if the outer diameter was 0.28 mm or less, and a pole bear having a thickness of 1.10 mm was used if the outer diameter was 0.33 mm or more.

〔本発明〕
上記の実施例のように、載置台21上に縫合針を載置し、上方からスプレーにより2.0%濃度のシリコーンを噴霧して塗装した。塗装場所は、先端を含むテーパ部の全体と、胴部の途中までである。塗装回数は4回である。1回目と3回目の噴霧の後、180℃で4時間加熱乾燥し、2回目と4回目の噴霧の後、180℃で8時間加熱乾燥した。各外径で、1刺通目〜10刺通目までの各刺通抵抗(5本の平均値)を測定した。刺通抵抗の単位はN(ニュートン)である。
[Invention]
Like the said Example, the suturing needle was mounted on the mounting base 21, and the 2.0% density | concentration silicone was sprayed and painted by spraying from the upper direction. The painting place is the whole taper part including a front-end | tip and the middle of a trunk | drum. The number of paintings is four times. After the first and third sprays, they were heat-dried at 180 ° C. for 4 hours, and after the second and fourth sprays, they were heat-dried at 180 ° C. for 8 hours. For each outer diameter, the piercing resistance (average value of five) from the first piercing to the tenth piercing was measured. The unit of piercing resistance is N (Newton).

〔比較例〕
比較例として、0.8%濃度のシリコーン液に縫合針を浸漬することで塗装した。塗装回数は4回である。1回目と3回目の浸漬の後、180℃で1時間加熱乾燥し、2回目と4回目の後、180℃で8時間加熱乾燥した。各外径で、1刺通目〜10刺通目までの各刺通抵抗(5本の平均値)を測定した。
[Comparative Example]
As a comparative example, painting was performed by immersing a suture needle in a 0.8% concentration silicone liquid. The number of paintings is four times. After the first and third immersions, heat drying was performed at 180 ° C. for 1 hour, and after the second and fourth times, heat drying was performed at 180 ° C. for 8 hours. For each outer diameter, the piercing resistance (average value of five) from the first piercing to the tenth piercing was measured.

実験の結果、外径0.14mmから0.38mmのものすべてにおいて、本発明のスプレー式の方が、1刺通目から10刺通目までの刺通抵抗の平均値が小さいことがわかった。浸漬式の刺通抵抗の平均値をスプレー式の刺通抵抗の平均値で割った値を求め切味を比較したところ、外径が0.14mmのものでは2.0を越えており、特に顕著に優位性が現れることがわかった。実験結果により、本発明は、特に細径の縫合針に適用した場合に、格別の効果を奏することがわかった。   As a result of the experiment, it was found that the average value of the piercing resistance from the first piercing to the tenth piercing was smaller in the spray type of the present invention in all the outer diameters from 0.14 mm to 0.38 mm. . When the average value of the immersion type puncture resistance was divided by the average value of the spray type puncture resistance and the sharpness was compared, it was over 2.0 when the outer diameter was 0.14 mm. It was found that a significant advantage appears. From the experimental results, it has been found that the present invention has a special effect particularly when applied to a small-sized suture needle.

また、スプレー式と浸漬式の双方について、それぞれ、10刺通目の刺通抵抗を、1刺通目刺通抵抗で割った値(「刺通抵抗増加率」という)を求めたところ、外径0.14mmから0.38mmのものすべてにおいて、スプレー式の方の値が低くなった。これは、10回刺通しても、刺通抵抗の増加が小さく切味耐久性が良いということで、図6の結果を裏付けるものとなった。   In addition, for both the spray type and the immersion type, a value obtained by dividing the puncture resistance of the 10th puncture by the puncture resistance of the 1st puncture (referred to as “the puncture resistance increase rate”) In all of the diameters from 0.14 mm to 0.38 mm, the value of the spray type was lower. This proves the result of FIG. 6 that the increase in piercing resistance is small and the sharpness durability is good even after ten piercings.

さらに、浸漬式の刺通抵抗増加率をスプレー式の刺通抵抗増加率で割った値を求め切味耐久性を比較したところ、外径0.14mmと、0.18mmでは2.0を越えていた。すなわち、本発明は、特に細径の縫合針で、効果が大きいことが分かった。   Furthermore, when the value obtained by dividing the immersion type puncture resistance increase rate by the spray type puncture resistance increase rate was obtained and the sharpness durability was compared, it exceeded 2.0 when the outer diameter was 0.14 mm and 0.18 mm. It was. That is, the present invention was found to be particularly effective with a small-sized suture needle.

上記実験をまとめると、切味と切味耐久性の両方において、本発明のスプレー式で行った方が有利な結果が得られることがわかった。また、特に細径の縫合針において効果が高いことが認められ、前記したとおり、細径の縫合針は止まり穴の中にシリコーンが進入することを防止するための水が入りにくいということも鑑みると、細径の縫合針については本発明のスプレー式を採用することが最適ということがわかった。また特に外径が0.28mm以下の縫合針では、従来の浸漬式の場合と切味耐久性を比較すると1.59倍以上良いという結果となっており、特に好ましく適用できることがわかった。   Summarizing the above experiments, it was found that advantageous results were obtained when the spray method of the present invention was used in both sharpness and sharpness durability. In addition, it is recognized that the effect is particularly high in a small-sized suture needle. As described above, the small-sized suture needle also takes into consideration that water for preventing silicone from entering the blind hole is difficult to enter. It was found that it is optimal to adopt the spray type of the present invention for a small-sized suture needle. In particular, with a suture needle having an outer diameter of 0.28 mm or less, it was found that the sharpness durability was 1.59 times better when compared with the case of the conventional immersion type, and it was found that it can be particularly preferably applied.

10 縫合針
11 基端部
11a 基端面
12 止まり穴
13 針先
14 テーパ部
15 胴部
20 縫合糸
21 載置台
21a 載置面
30 シリコーンの粒子
31 シリコーン層
35 ベルトコンベア(搬送装置)
36 ノズル(噴霧装置)
37 乾燥炉
DESCRIPTION OF SYMBOLS 10 Suture needle 11 Base end part 11a Base end surface 12 Blind hole 13 Needle tip 14 Tapered part 15 Trunk part 20 Suture thread 21 Mounting base 21a Mounting surface 30 Silicone particle 31 Silicone layer 35 Belt conveyor (conveyance device)
36 nozzle (spraying device)
37 Drying furnace

Claims (3)

所定の断面形状を有する胴部と、該胴部に続き、先端に向かって徐々に細くなるテーパ部と、を有する縫合針であって、
該縫合針が、該縫合針の一方の側面側から液状のシリコーンを噴霧されて前記テーパ部の他方の側面側までシリコーンを塗布され、少なくとも前記胴部の一部にシリコーンが付着しない部分を有することを特徴とするシリコーンを塗布した縫合針。
A suture needle having a trunk portion having a predetermined cross-sectional shape, and a tapered portion that gradually narrows toward the tip, following the trunk portion,
The suturing needle is sprayed with liquid silicone from one side surface of the suturing needle and applied with silicone to the other side surface of the tapered portion, and has a portion where silicone does not adhere to at least a part of the body portion. A suture needle coated with silicone.
前記縫合針の先端にシリコーンが塗布されていることを特徴とする、請求項1に記載のシリコーンを塗布した縫合針。   The silicone-applied suture needle according to claim 1, wherein silicone is applied to a tip of the suture needle. 所定の断面形状を有する胴部と、該胴部に続き、先端に向かって徐々に細くなるテーパ部と、を有する縫合針を支持する工程と、支持された縫合針の一方の側面側から液状のシリコーンを噴霧して前記テーパ部の他方の側面側までシリコーンを塗布する工程と、を有することを特徴とするシリコーンを塗布した縫合針の製造方法。   A step of supporting a suture needle having a trunk portion having a predetermined cross-sectional shape and a tapered portion that gradually narrows toward the distal end following the barrel portion; and a liquid state from one side of the supported suture needle And a step of spraying the silicone to the other side surface of the tapered portion, and a method of manufacturing a suture needle coated with silicone.
JP2010193219A 2010-08-31 2010-08-31 Suture needle coated with silicone and method for manufacturing the same Pending JP2012050477A (en)

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US20150351749A1 (en) 2014-06-06 2015-12-10 Ethicon Endo-Surgery, Inc. Needle Cartridge with Moveable Cover
US10004490B2 (en) 2014-06-06 2018-06-26 Ethicon Llc Force limited needle driver
US10022120B2 (en) 2015-05-26 2018-07-17 Ethicon Llc Surgical needle with recessed features
US20160346827A1 (en) * 2015-05-26 2016-12-01 Ethicon Endo-Surgery, Llc Method of Fabricating a Surgical Needle with Recessed Features
USD800306S1 (en) 2015-12-10 2017-10-17 Ethicon Llc Surgical suturing device
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JP2015054057A (en) * 2013-09-11 2015-03-23 学校法人 関西大学 Buckling prevention sheet and puncture instrument set
JP7370948B2 (en) 2020-08-28 2023-10-30 マニー株式会社 Black medical equipment and its manufacturing method

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