JP2019010697A - Cut blade for slit formation and medical rubber valve formed of slit using the same - Google Patents

Cut blade for slit formation and medical rubber valve formed of slit using the same Download PDF

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JP2019010697A
JP2019010697A JP2017127823A JP2017127823A JP2019010697A JP 2019010697 A JP2019010697 A JP 2019010697A JP 2017127823 A JP2017127823 A JP 2017127823A JP 2017127823 A JP2017127823 A JP 2017127823A JP 2019010697 A JP2019010697 A JP 2019010697A
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blade
slit
cutting blade
rubber valve
radius
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JP6905668B2 (en
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和夫 二俣
Kazuo Futamata
和夫 二俣
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Sumitomo Rubber Industries Ltd
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Abstract

To provide a cut blade for slit formation in which a longer slit can be formed to a rubber valve.SOLUTION: A cut blade 10 is provided for forming three-pronged slits in the top surface part of a rubber valve. The cut blade 10 comprises three cut blades 10a, 10b, 10c provided at three equal angular positions to a shaft core. In each of the cut blades 10a, 10b, 10c, the blade diameter (radius) (a) is 0.9 mm≤a≤1.1 mm and the angle of the tip is 15-25°, and the angle of the cutting edge formed between the cut blades is 80-180°.EFFECT: A medical rubber valve can be obtained in which the relationship between one side of the length c of the formed three-pronged slit and the blade diameter (radius) (a) of the cut blade used by slit formation is 0.6≤c/a≤0.9.SELECTED DRAWING: Figure 3

Description

この発明は、医療用ゴム製弁にスリットを形成するためのカット刃及びに当該カット刃を用いてスリットが形成された医療用ゴム製弁に関する。   The present invention relates to a cutting blade for forming a slit in a medical rubber valve and a medical rubber valve in which a slit is formed using the cutting blade.

止血弁等として用いられる医療用のゴム製弁が公知である。係る医療用ゴム製弁には、弁の中央部に針やカテーテル等を刺せるように、通常、三叉のスリットが形成されている（例えば、特許文献１、２及び３を参照）。   Medical rubber valves used as hemostasis valves and the like are known. Such a medical rubber valve is generally formed with a trident slit so that a needle, a catheter, or the like can be inserted into the central portion of the valve (see, for example, Patent Documents 1, 2, and 3).

特開平２００２−２６３１９７号公報Japanese Patent Laid-Open No. 2002-263197 実開平４−１３１５６号公報(実願平２−５４７４２号のマイクロフィルム)Japanese Utility Model Publication No. 4-13156 (Microfilm of Japanese Utility Model Application No. 2-54742) 実開平１−８７７４６号公報(実願昭６２−１８４５０２号のマイクロフィルム)Japanese Utility Model Publication No. 1-87746 (Microfilm of Japanese Utility Model Application No. 62-184502)

医療用ゴム製弁の製造時、弁の中央部に三叉のスリットを形成するに際しては、三叉状のカット刃が用いられる。一例として、ゴム製弁１が特許文献１に記載のような形状の場合、すなわち、図１に示すような弁体部２と、弁体部２の周縁から立ち上がった筒体部３とを含む形状の場合、カット刃１０を、ゴム製弁１の筒体部３の一端に開口した穴４（穴４の半径はｂ）から挿入し、弁体部２の天面５から中央部を貫通させて、弁体部２にスリットを形成する。その際、受け板６にゴム製弁１を乗せ、周囲をホールドプレート７で囲む。   When forming a three-pronged slit at the center of the valve at the time of manufacturing a medical rubber valve, a trident-shaped cutting blade is used. As an example, when the rubber valve 1 has a shape as described in Patent Document 1, that is, the valve body portion 2 as shown in FIG. 1 and the cylindrical body portion 3 rising from the periphery of the valve body portion 2 are included. In the case of the shape, the cutting blade 10 is inserted from the hole 4 (the radius of the hole 4 is b) opened at one end of the cylindrical body portion 3 of the rubber valve 1 and penetrates the central portion from the top surface 5 of the valve body portion 2. Thus, a slit is formed in the valve body 2. At that time, the rubber valve 1 is placed on the receiving plate 6, and the periphery is surrounded by the hold plate 7.

弁体部２にスリットを形成する時、ゴムはカット刃１０の進入に対して外側へ逃げようとする性質があり、形成されるスリットの長さｃと、カット刃１０の刃径（半径）ａとの関係は、０．４≦ｃ／ａ≦０．６というものが一般的である。
このため、スリットの長さｃを長くするためには、カット刃１０の刃径（半径）ａを大きくすればよいのであるが、カット刃１０の刃径（半径）ａを大きくすると、カット刃１０が筒体部３の穴４と干渉し、穴４が損傷する虞がある。 When the slit is formed in the valve body 2, the rubber has a property of trying to escape outward with respect to the entry of the cutting blade 10, and the length c of the formed slit and the blade diameter (radius) of the cutting blade 10. The relationship with a is generally 0.4 ≦ c / a ≦ 0.6.
Therefore, in order to increase the length c of the slit, the blade diameter (radius) a of the cutting blade 10 may be increased. However, if the blade diameter (radius) a of the cutting blade 10 is increased, the cutting blade 10 10 may interfere with the hole 4 of the cylindrical body portion 3, and the hole 4 may be damaged.

この発明は、上記の課題を解決するためになされたものであり、ゴム製弁により長いスリットを形成することのできるスリット形成用のカット刃を提供することを主たる目的とする。
この発明は、また、耐久性に優れたスリット形成用のカット刃を提供することを他の目的とする。 The present invention has been made to solve the above-described problems, and has as its main object to provide a slit-forming cutting blade capable of forming a long slit with a rubber valve.
Another object of the present invention is to provide a slit forming blade having excellent durability.

上記目的を達成するためのこの発明は、以下の構成を有している。
第１の発明は、ゴム製の弁の天面部に三叉のスリットを形成するためのカット刃であって、前記カット刃は、軸芯に対して３等配の角度位置に設けられた３つのカット刃を含み、各カット刃は、その刃径（半径）ａが、０．９ｍｍ≦ａ≦１．１ｍｍで、かつ、先端部の角度が１５〜２５°であり、カット刃同士で形成される刃先の角度が８０〜１８０°であることを特徴とするスリット形成用のカット刃である。 In order to achieve the above object, the present invention has the following configuration.
1st invention is a cutting blade for forming a trident slit in the top | upper surface part of a rubber-made valve, Comprising: The said cutting blade is provided in three angular positions of 3 equal intervals with respect to the axial center. Each cutting blade includes a cutting blade, and has a blade diameter (radius) a of 0.9 mm ≦ a ≦ 1.1 mm and an angle of the tip portion of 15 to 25 °, and is formed by cutting blades. The cutting blade for slit formation is characterized in that the angle of the cutting edge is 80 to 180 °.

第２の発明は、前記カット刃は、刃の材質がコバルトを６〜１４％含有する超硬合金、超微粒子超硬合金または超々微粒子超硬合金のいずれかであることを特徴とするスリット形成用のカット刃である。
第３の発明は、第１または第２の発明に係るカット刃を用いてスリットが形成された医療用ゴム製弁であって、形成された三叉スリットの一辺の長さｃとスリット形成に用いられた前記カット刃の刃径（半径）ａとの関係が、０．６≦ｃ／ａ≦０．９であることを特徴とする医療用ゴム製弁である。 According to a second aspect of the present invention, the cutting blade is formed of any one of a cemented carbide containing 6 to 14% cobalt, an ultrafine particle cemented carbide, or an ultra ultrafine particle cemented carbide. It is a cutting blade for.
The third invention is a medical rubber valve in which a slit is formed using the cutting blade according to the first or second invention, and is used for the length c of one side of the formed trident slit and the slit formation. The medical rubber valve is characterized in that a relationship with a blade diameter (radius) a of the cut blade is 0.6 ≦ c / a ≦ 0.9.

この発明によれば、ゴム製の弁に三叉のスリットを形成するに際し、相対的に長さの長い三叉のスリットを形成することができる。また、この発明によれば、カット刃が耐久性に優れ、長期間良好にスリットを形成できる。
よって、この発明のカット刃を用いてスリットが形成された医療用ゴム製弁は、性能や使用勝手の良いゴム製弁となる。 According to the present invention, when the trident slit is formed in the rubber valve, the trident slit having a relatively long length can be formed. Moreover, according to this invention, a cutting blade is excellent in durability, and can form a slit favorably for a long period of time.
Therefore, the medical rubber valve in which the slit is formed using the cutting blade of the present invention is a rubber valve having good performance and ease of use.

図１は、一例としての医療用ゴム製弁に三叉状のカット刃で三叉スリットを形成する様子を説明する図解図である。FIG. 1 is an illustrative view for explaining a state in which a trident slit is formed with a trident cut blade in a medical rubber valve as an example. 図２は、この発明の一実施形態に係る三叉状のカット刃を示す斜視図である。FIG. 2 is a perspective view showing a trident cut blade according to an embodiment of the present invention. 図３は、図２に示す三叉状カット刃の模式図であり、図３（Ａ）は側面図であり、図３（Ｂ）は正面図である。3 is a schematic view of the trident blade shown in FIG. 2, FIG. 3 (A) is a side view, and FIG. 3 (B) is a front view.

以下には、図面を参照して、この発明の一実施形態について説明する。
図２は、この発明の一実施形態に係る三叉状のカット刃１０を示す斜視図である。カット刃１０は、ボディ軸１１の先端が縮径するテーパ１２に加工され、テーパ１２の先端から軸芯１３方向に直線状に突出している。カット刃１０は、ボディ軸１１との一体成形品である。カット刃１０は、図３（Ｂ）の正面図に示すように。軸芯１３の回りに、１２０°の角度をあけて三叉状に３等配された３つのカット刃１０ａ、１０ｂ及び１０ｃを含んでいる。各カット刃１０ａ、１０ｂ、１０ｃは、相互に等しい形態であり、図３（Ｂ）に示すように、刃径（半径）はａ、図３（Ａ）に示すように、刃先端部角度はｅ、各カット刃とカット刃とのなす刃先角度はｄとされている。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 2 is a perspective view showing a tridental cutting blade 10 according to an embodiment of the present invention. The cutting blade 10 is processed into a taper 12 whose diameter is reduced at the tip of the body shaft 11, and protrudes linearly from the tip of the taper 12 toward the axis 13. The cutting blade 10 is an integrally molded product with the body shaft 11. As shown in the front view of FIG. Around the shaft core 13, three cutting blades 10 a, 10 b, and 10 c that are arranged in a three-pronged manner at an angle of 120 ° are included. Each of the cutting blades 10a, 10b, and 10c has the same form, the blade diameter (radius) is a as shown in FIG. 3 (B), and the blade tip angle is as shown in FIG. 3 (A). e, the cutting edge angle formed by each cutting blade and the cutting blade is d.

この実施形態に係る三叉状カット刃１０の特徴は、
(1) 刃先角度ｄを、ｄ＝８０〜１８０°と相対的に広角にしたこと
(2) 刃先端部角度ｅを、ｅ＝１８〜２４°と相対的に鋭角にしたこと
(3) 刃の材質を超硬合金、超微粒子超硬合金、超々微粒子超硬合金等とし、刃を相対的に硬くしたこと
である。 The features of the trident cut blade 10 according to this embodiment are as follows:
(1) The blade edge angle d is relatively wide, d = 80 to 180 °.
(2) The blade tip angle e is relatively acute with e = 18-24 °.
(3) The blade is made of cemented carbide, ultrafine particle cemented carbide, ultra extra fine particle cemented carbide, etc., and the blade is relatively hardened.

なお、刃先端部の角度は研磨によって調整するが、研磨方法は、放電研磨、ダイヤモンド砥石研磨等の公知の各種研磨方法を用いることができる。
そして、上記の構成の三叉状カット刃にしたことにより、ゴム製の弁に三叉のスリットを形成するに際し、相対的に長さの長いスリットを形成することができ、かつ、耐久性も向上したものとなった。 In addition, although the angle of a blade front-end | tip part is adjusted by grinding | polishing, well-known various grinding | polishing methods, such as electric discharge grinding | polishing and diamond grindstone grinding | polishing, can be used for grinding | polishing method.
And, by using the tridental cutting blade having the above-described configuration, when forming the tridental slit in the rubber valve, it is possible to form a relatively long slit and to improve durability. It became a thing.

［実施例及び比較例の構成］
実施例１として、ハイス鋼で、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝９０°、刃先端部角度ｅがｅ＝２２°の三叉状カット刃を作った。
実施例２として、ハイス鋼で、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝９０°、刃先端部角度ｅがｅ＝１８°の三叉状カット刃を作った。
実施例３として、超微粒子超硬合金で、カッター刃（径半）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝９０°、刃先端部角度ｅがｅ＝２４°の三叉状カット刃を作った。 [Configuration of Examples and Comparative Examples]
As Example 1, a three-pronged cutting blade made of high-speed steel and having a cutter blade diameter (radius) a = 1.0 mm, a blade edge angle d of d = 90 °, and a blade tip angle e of e = 22 ° was made. .
As Example 2, a three-pronged cutting blade made of high-speed steel and having a cutter blade diameter (radius) a = 1.0 mm, a blade tip angle d of d = 90 °, and a blade tip portion angle e of e = 18 ° was made. .
As Example 3, a three-pronged cutting blade made of an ultrafine particle cemented carbide having a cutter blade (diameter half) a = 1.0 mm, a blade edge angle d of d = 90 °, and a blade tip angle e of e = 24 °. made.

実施例４として、ハイス鋼で、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝１６０°、刃先端部角度ｅがｅ＝２４°の三叉状カット刃を作った。
実施例５として、超微粒子超硬合金で、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝１６０°、刃先端部角度ｅがｅ＝２２°の三叉状カット刃を作った。
実施例６として、超微粒子超硬合金で、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝１６０°、刃先端部角度ｅがｅ＝１８°の三叉状カット刃を作った。
また、実施例と比較する比較例の三叉状カット刃は、すべて、ハイス鋼で作成した。 As Example 4, a three-pronged cutting blade made of high-speed steel and having a cutter blade diameter (radius) a = 1.0 mm, a blade edge angle d of d = 160 °, and a blade tip angle e of e = 24 ° was made. .
As Example 5, a trident-shaped cutting blade made of an ultrafine particle cemented carbide having a cutter blade diameter (radius) a = 1.0 mm, a blade edge angle d of d = 160 °, and a blade tip angle e of e = 22 °. made.
Example 6 is a trident cut blade made of ultrafine particle cemented carbide, having a cutter blade diameter (radius) a = 1.0 mm, a blade edge angle d = d = 160 °, and a blade tip angle e = e = 18 °. made.
Moreover, all the tridentate cutting blades of the comparative examples to be compared with the examples were made of high-speed steel.

比較例１は、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝７５°、刃先端部角度ｅがｅ＝２４°とした。
比較例２は、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝２００°、刃先端部角度ｅがｅ＝２４°とした。
比較例３は、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝９０°、刃先端部角度ｅがｅ＝２６°とした。 In Comparative Example 1, the cutter blade diameter (radius) a was a = 1.0 mm, the blade edge angle d was d = 75 °, and the blade tip angle e was e = 24 °.
In Comparative Example 2, the cutter blade diameter (radius) a was a = 1.0 mm, the blade edge angle d was d = 200 °, and the blade tip angle e was e = 24 °.
In Comparative Example 3, the cutter blade diameter (radius) a was a = 1.0 mm, the blade edge angle d was d = 90 °, and the blade tip angle e was e = 26 °.

比較例４は、カッター刃径（半径）ａがａ＝１．０ｍｍ、刃先角度ｄがｄ＝９０°、刃先端部角度ｅがｅ＝１５°とした。
比較例５は、カッター刃径（半径）ａがａ＝０．８ｍｍ、刃先角度ｄがｄ＝９０°、刃先端部角度ｅがｅ＝２４°とした。
比較例６は、カッター刃径（半径）ａがａ＝１．２ｍｍ、刃先角度ｄがｄ＝９０°、刃先端部角度ｅがｅ＝２４°とした。 In Comparative Example 4, the cutter blade diameter (radius) a was a = 1.0 mm, the blade edge angle d was d = 90 °, and the blade tip angle e was e = 15 °.
In Comparative Example 5, the cutter blade diameter (radius) a was a = 0.8 mm, the blade edge angle d was d = 90 °, and the blade tip angle e was e = 24 °.
In Comparative Example 6, the cutter blade diameter (radius) a was a = 1.2 mm, the blade edge angle d was d = 90 °, and the blade tip angle e was e = 24 °.

［評価方法］
（１）実施例１〜６及び比較例１〜６の各カット刃で、図１に示すゴム製弁１の弁体部２に、天面５から中央部を貫通させるようにスリットを形成した。
そして、形成されたスリットの長さをマイクロスコープ（株式会社キーエンス製 型式：ＶＨＸ−９００、測定倍率：１００倍）にて測定した。
測定値は、ゴム製弁１０個を測定した際の平均値を記載した。
なお、スリットを見やすくするために、スリットにインクを染み込ませてから測定を行った。
（２）カット初期（スリット形成初期）のスリットの長さ（ｃ）に対して、２５万カット後のスリットの長さ（ｃ ’）との比率（ｃ／ｃ’ ）を算出し、ｃ／ｃ’ が０．９５以上が耐久性◎、０．９０〜０．９５が耐久性○、０．９０未満を耐久性Δと判定した。
（３）カット刃の干渉によって、ゴム製弁の穴部が損傷したサンプルが見つかった場合、外観検査をΔと判定した。
実施例１〜６及び比較例１〜６の構成とその評価結果を下記表１に示す。 [Evaluation method]
(1) With the cutting blades of Examples 1 to 6 and Comparative Examples 1 to 6, slits were formed in the valve body 2 of the rubber valve 1 shown in FIG. .
And the length of the formed slit was measured with the microscope (Keyence Co., Ltd. model: VHX-900, measurement magnification: 100 times).
The measured value described the average value at the time of measuring 10 rubber valves.
In addition, in order to make the slit easy to see, the measurement was performed after the ink was soaked into the slit.
(2) The ratio (c / c ′) of the slit length (c ′) after 250,000 cuts to the slit length (c) at the initial stage of cutting (initial stage of slit formation) is calculated as c / When c ′ was 0.95 or more, durability ◎, 0.90 to 0.95 were evaluated as durability ○, and less than 0.90 were determined as durability Δ.
(3) When a sample in which the hole of the rubber valve was damaged due to the interference of the cutting blade was found, the appearance inspection was determined as Δ.
The configurations of Examples 1 to 6 and Comparative Examples 1 to 6 and the evaluation results are shown in Table 1 below.

Figure 2019010697
Figure 2019010697

表１において、比較例１は、刃先角度ｄが狭く、スリット長ｃが不十分である。比較例２は、刃先角度ｄが広く、刃の耐久性が良くない。比較例３は、刃先端部角度ｅが広く、カット時にゴムが逆げ、スリット長ｃが不十分である。比較例４は、刃先端部角度ｅが狭く、刃の耐久性が良くない。比較例５は、カッター刃径（半径）ａが細く、スリット長ｃが不十分である。比較例６は、カッター刃径（半径）ａが太く、ゴム製弁の穴部に損傷が生じた。   In Table 1, the comparative example 1 has a narrow blade edge angle d and an insufficient slit length c. In Comparative Example 2, the blade edge angle d is wide and the durability of the blade is not good. In Comparative Example 3, the blade tip angle e is wide, the rubber is reversed during cutting, and the slit length c is insufficient. In Comparative Example 4, the blade tip angle e is narrow and the durability of the blade is not good. In Comparative Example 5, the cutter blade diameter (radius) a is thin, and the slit length c is insufficient. In Comparative Example 6, the cutter blade diameter (radius) a was thick, and the hole of the rubber valve was damaged.

実施例１〜６は、いずれも、性能的に満足のいく三叉状カット刃となった。
そして、この発明の実施例１〜６に係るカット刃を用いてスリットが形成された医療用ゴム製弁は、同じカッターの刃径（半径）ａに対して、スリットの長さｃをより長くすることができた。具体的には、０．６≦ｃ／ａ≦０．９とすることができた。 Each of Examples 1 to 6 was a trifurcated cut blade that was satisfactory in performance.
And the rubber valve for medical use in which the slit was formed using the cutting blade which concerns on Example 1-6 of this invention made the length c of a slit longer with respect to the blade diameter (radius) a of the same cutter. We were able to. Specifically, it was able to be set to 0.6 <= c / a <= 0.9.

１ ゴム製弁
２ 弁体部
３ 筒体部
４ 穴
５ 天面
６ 受け板
１０ カット刃
１１ ボディ軸
１３ 軸芯 DESCRIPTION OF SYMBOLS 1 Rubber valve 2 Valve part 3 Cylinder part 4 Hole 5 Top surface 6 Base plate 10 Cut blade 11 Body shaft 13 Axle

Claims (3)

ゴム製の弁の天面部に三叉のスリットを形成するためのカット刃であって、
前記カット刃は、軸芯に対して３等配の角度位置に設けられた３つのカット刃を含み、
各カット刃は、その刃径（半径）ａが、０．９ｍｍ≦ａ≦１．１ｍｍで、かつ、先端部の角度が１５〜２５°であり、カット刃同士で形成される刃先の角度が８０〜１８０°であることを特徴とする、スリット形成用のカット刃。 A cutting blade for forming a trident slit in the top surface of a rubber valve,
The cutting blade includes three cutting blades provided at three equal angular positions with respect to the axis.
Each cutting blade has a blade diameter (radius) a of 0.9 mm ≦ a ≦ 1.1 mm, an angle of the tip portion of 15 to 25 °, and an angle of the blade edge formed between the cutting blades. A cutting blade for forming a slit, which is 80 to 180 °. 前記カット刃は、刃の材質がコバルトを６〜１４％含有する超硬合金、超微粒子超硬合金または超々微粒子超硬合金のいずれかであることを特徴とする、請求項１に記載のスリット形成用のカット刃。   2. The slit according to claim 1, wherein the cutting blade is made of any one of a cemented carbide containing 6 to 14% of cobalt, an ultrafine particle cemented carbide, or an ultra ultrafine particle cemented carbide. Cutting blade for forming. 請求項１または２に記載のカット刃を用いてスリットが形成された医療用ゴム製弁であって、
形成された三叉スリットの一辺の長さｃとスリット形成に用いられた前記カット刃の刃径（半径）ａとの関係が、０．６≦ｃ／ａ≦０．９であることを特徴とする、医療用ゴム製弁。 A medical rubber valve in which a slit is formed using the cutting blade according to claim 1 or 2,
The relationship between the length c of one side of the formed trident slit and the blade diameter (radius) a of the cutting blade used for slit formation is 0.6 ≦ c / a ≦ 0.9. A rubber valve for medical use.
JP2017127823A 2017-06-29 2017-06-29 A cutting blade for forming a slit and a method for manufacturing a rubber valve for medical use with a slit using the cutting blade. Active JP6905668B2 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63100045U (en) * 1986-12-19 1988-06-29
JPH01139077A (en) * 1987-09-21 1989-05-31 Cordis Corp Valve for medical instrument
JPH0187746U (en) * 1987-12-02 1989-06-09
JPH0413156U (en) * 1990-05-26 1992-02-03
JPH10179757A (en) * 1996-12-26 1998-07-07 Sumitomo Bakelite Co Ltd Hemostatic valve for catheter introducer
JP2002263197A (en) * 2001-03-12 2002-09-17 Medikit Kk Indwelling catheter
JP2004291137A (en) * 2003-03-26 2004-10-21 Kyocera Corp Cutting blade
JP2015077327A (en) * 2013-10-18 2015-04-23 信越ポリマー株式会社 Valve member for needleless connector and needleless connector

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63100045U (en) * 1986-12-19 1988-06-29
JPH01139077A (en) * 1987-09-21 1989-05-31 Cordis Corp Valve for medical instrument
JPH0187746U (en) * 1987-12-02 1989-06-09
JPH0413156U (en) * 1990-05-26 1992-02-03
JPH10179757A (en) * 1996-12-26 1998-07-07 Sumitomo Bakelite Co Ltd Hemostatic valve for catheter introducer
JP2002263197A (en) * 2001-03-12 2002-09-17 Medikit Kk Indwelling catheter
JP2004291137A (en) * 2003-03-26 2004-10-21 Kyocera Corp Cutting blade
JP2015077327A (en) * 2013-10-18 2015-04-23 信越ポリマー株式会社 Valve member for needleless connector and needleless connector

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