JP4253174B2 - Hemostasis valve for catheter introducers - Google Patents

Hemostasis valve for catheter introducers Download PDF

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Publication number
JP4253174B2
JP4253174B2 JP2002324790A JP2002324790A JP4253174B2 JP 4253174 B2 JP4253174 B2 JP 4253174B2 JP 2002324790 A JP2002324790 A JP 2002324790A JP 2002324790 A JP2002324790 A JP 2002324790A JP 4253174 B2 JP4253174 B2 JP 4253174B2
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Prior art keywords
clamping part
hemostasis valve
pore
catheter
diameter
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JP2004154456A (en
Inventor
卓倫 羽田野
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Kawasumi Laboratories Inc
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Kawasumi Laboratories Inc
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M39/0606—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof without means for adjusting the seal opening or pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M2039/062—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof used with a catheter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M2039/0633—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof the seal being a passive seal made of a resilient material with or without an opening
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M2039/0633—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof the seal being a passive seal made of a resilient material with or without an opening
    • A61M2039/0653—Perforated disc

Description

【０００１】
【発明の属する技術分野】
本発明はカテーテル等を血管内に導入する際に使用するイントロデューサー用止血弁の改良に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来カテーテルイントロデューサーのシースの基部に止血弁が装着されていることは既に公知であり、該止血弁に関して数多くの特許が出願されている。
例えば特許文献１に記載の止血弁は円盤状の弁膜体で構成され、止血弁の略中央部に、止血弁を貫通する細孔を形成し、当該細孔を中心にして止血弁を構成する壁面に、複数の放射状スリットが形成されている。しかしながら当該止血弁では、カテーテルを挿入した時、当該スリットを形成した壁面にかかる負荷が大きくなり、当該壁面の先端部が捲れやすくなり、液漏れが懸念される。
【０００３】
また特許文献２の止血弁は板状のゴム状弾性体からなり、一方の面にすり鉢状に形成された凹部を形成し、当該凹部の中心に小孔（細孔）を形成し、反対の面に中心から放射状に伸びる複数のリブと複数のスリットを形成している。
当該止血弁はスリットを形成した壁面にリブを形成することより、カテーテルを挿入した時、スリット（切れ目）を形成した壁面先端の捲れは緩和されるが、スリット（切れ目）の形成位置が、止血弁の底面側に偏っているため、カテーテルを引き抜く時の抵抗が大きくなり操作性に違和感があった。
【０００４】
また特許文献３の止血弁は肉厚の非挟持部と肉薄の挟持部より構成され、前記非挟持部にその中心から外方向に複数条に伸び且つ天面から底面に亘って挿通したスリットを形成し、非挟持部の底面または天面から中腹部に至る複数のハーフスリットまたは溝を前記スリットの外周に形成している。当該止血弁はこのハーフスリットにより非挟持部と挟持部からなる止血弁の厚みに対するカテーテル等の抵抗を小さくしているが、止血弁全体の厚みは液漏れ等の問題が生じなければカテーテルの操作抵抗を小さくする為にも薄い方が好ましい。止血弁の厚みが薄い程カテーテルの外周と接触する面積も小さくなるので、抵抗も小さくなる。
そこで本発明者は以上の課題を解決するために鋭意検討を重ねた結果次の発明に到達した。
【０００５】
【特許文献１】
実公平５−４８４３号公報（第２頁、第１図〜第３図）
【特許文献２】
特開平７−１３６２８５号公報（段落番号［００１０］、第１図）
【特許文献３】
特開平１１−４８９３号公報、（段落番号［０００６］、［０００７］、第１図〜第４図）
【０００６】
【課題を解決するための手段】
［１］本発明は、カテーテルイントロデューサーの基部に挟持固定する止血弁（１）であって、
略円盤状に形成された大径の挟持部（２）と略円盤状に形成された小径の非挟持部（３）を一体に形成し、
前記挟持部（２）の上部に凹部（１０）を形成し、前記挟持部（２）の下部に前記非挟持部（３）を形成し、
止血弁（１）の縦方向の中心軸（Ｓ）上であってかつ、前記挟持部（２）と前記非挟持部（３）の境界線（Ｌ）上に、前記挟持部（２）と前記非挟持部（３）に連続する壁（Ｗ）を形成し、
当該壁（Ｗ）の略中央に、当該壁（Ｗ）を貫通するように、止血弁（１）の縦方向の中心軸（Ｓ）に沿って、小径の第１の細孔（５）を形成し、
当該第１の細孔（５）の上部と下部に、それぞれ当該第１の細孔（５）よりも大径の第２の細孔（６ａ）、（６ｂ）を連続して形成し、前記上部側の第２の細孔（６ａ）を前記凹部（１０）の下部に形成したカテーテルイントロデューサー用止血弁（１）を提供する。
［２］本発明は、前記非挟持部（３）側の面に、前記第２の細孔（６ｂ）を中心に複数のリブ（４ｂ）を放射状に配置し、かつ前記非挟持部（３）に、溝（７）を形成し、当該溝（７）は、
（Ａ）当該非挟持部（３）の外縁と前記リブ（４ｂ）の外縁の間に円周状に形成した溝（７）、または
（Ｂ）前記リブ（４ｂ）の下方に円周状に形成した溝（７）、
である［１］に記載のカテーテルイントロデューサー用止血弁（１）を提供する。
【０００７】
【発明の実施の形態】
図１は本発明の止血弁１の上方斜視図で、図２は図１の止血弁１の下方斜視図である。図３は前記止血弁１の展開図で（ａ）は平面図、（ｂ）は前記（ａ）のＡ−Ａ′の断面図、（ｃ）は底面図である。
本発明の止血弁１は、略円盤状に形成された大径の挟持部２と小径の非挟持部３を一体に形成し、止血弁１の略中央部に縦方向の中心軸Ｓに沿って、小径の第１の細孔（５）を形成し、当該第１の細孔（５）の両側に、大径の第２の細孔（６ａ）（６ｂ）を連続して形成している。
前記第１の細孔５は、前記挟持部２と非挟持部３に連続する壁Ｗの略中央に当該壁Ｗを貫通して形成されている。
本発明で、前記第１の細孔５とは、カテーテルが止血弁１を挿通する孔であり、例えば弾性体に金属針を穿刺した跡と同様の極細孔または切れ目（スリットともいう）等を意味する。
また前記第２の細孔６ａ、６ｂとは、前記第１の細孔５の上部と下部の両側に連通して形成される孔であり、前記第１の細孔５よりも大きな径に形成された孔である。当該第２の細孔６ａ、６ｂを形成することによりカテーテルを第１の細孔５に挿通した時、当該細孔５の裂けの拡大を防止することができ、さらに壁Ｗの捲くれを抑えると共に液漏れも同時に抑えることができる。さらに前記細孔６ａ、６ｂ近傍の壁面が前記カテーテルの外周と密着するため、カテーテルを前後に可動させた時、上下左右に動いてもカテーテルを保持することができる。
【０００８】
図３（ｂ）に例示するように前記非挟持部３の径は、前記挟持部２の径の約半分の径に形成され、また当該非挟持部３の厚さは、前記挟持部２の厚さよりも薄く形成されている。
本発明の止血弁１は、前記第１の細孔５を形成した壁Ｗの位置を、止血弁１の略中央部、すなわち止血弁１の縦方向の中心軸Ｓ上であってかつ、前記挟持部２と非挟持部３の境界線Ｌ上に配置している。このため第１の細孔５を通過するカテーテル等（図示せず）の抵抗を、前記挟持部２と非挟持部３で均等に分散吸収させることができる。
本発明の止血弁１は例えばシリコーンゴム等の合成ゴムまたは天然ゴム等の弾性体で形成される。特にシリコーンゴムで形成するのが好ましい。
第１の細孔５は通常は閉塞状態である。閉塞している第１の細孔５にカテーテルを挿入すると、前記壁Ｗはカテーテルの外周に密着し液密状態を維持しながら徐々にカテーテルが挿通される。前記カテーテルを抜去する時、カテーテルによって開口した第１の細孔５が徐々に閉塞する。
【０００９】
前記挟持部２の天面に凹部１０を形成し、前記凹部１０の底部に前記第２の細孔６ａが形成されている。前記凹部１０はカテーテルを第１の細孔５に導きやすくする為にすり鉢状に形成している。すなわちカテーテルを第１の細孔５に挿入する時に、カテーテルの外周が挟持部２と直設接触する面積を小さくすることができカテーテルの挿入抵抗を小さくすることができる。
また前記凹部１０の径（大きさ）は、前記非挟持部３の径より小さく形成されている。前記凹部１０の径（大きさ）は、カテーテルを第１の細孔５に挿入、抜去する時の抵抗と関係し、該凹部１０の径が大きいほど抵抗が小さくなるが、その反面止血弁１の耐圧性も小さくなる。従って前記凹部１０の径（大きさ）は、挟持部２の略半分の径に形成することが好ましい。
【００１０】
本発明の止血弁１は、前記挟持部２側の面と非挟持部３側の面にそれぞれにリブ４ａ、４ｂを形成している。
すなわち挟持部２側の面には、第２の細孔６ａを中心に凹部１０内に複数のリブ４ａを放射状（例えばＹ字、十字状等）に配置し、他方前記非挟持部３側の面には第２の細孔６ｂを中心に複数のリブ４ｂを放射状（例えばＹ字、十字状等）に配置している。
前記リブ４ａとリブ４ｂを挟持部２側と非挟持部３側のそれぞれの面に相互に重なる位置に配置すると止血弁１全体が硬くなりすぎて操作抵抗が高くなるので好ましくない。従って前記リブ４ａと４ｂは挟持部２側と非挟持部３側のそれぞれの面に重ならないように交互に配置することにより、止血弁１全体に適度な強度を付与し、操作抵抗を低くすることができるとともに当該リブ４ａ、４ｂによりカテーテルを挿通、抜去する時、該カテーテルの保持力を均等に且つ安定させることができる。
【００１１】
また本発明の止血弁１は、前記図２及び図３の（ｂ）、（ｃ）に例示するように、前記非挟持部３に溝７を形成している。当該溝７は非挟持部３の外縁とリブ４ｂの外縁の間に円周状に形成されている（またはリブ４ｂの下方に円周状に形成しても良い）。前記非挟持部３を挟持部２に一体成形することにより、止血弁１全体が肉厚になり、操作抵抗（特にカテーテルを抜去する際の抵抗力）が高くなるので、溝７を形成することにより操作抵抗を小さくすることができる。溝７を形成する位置は非挟持部３であればどこでも良い。前記図２及び図３の（ｂ）、（ｃ）のように非挟持部３の表面に形成しても良いし、非挟持部３の側壁面または壁面内に形成しても良い。このように溝７の形成位置、形状、幅、深さ等を適宜調整することにより、操作抵抗を調整することができる。
本実施例（非挟持部３に溝７を形成すること）は、大径の挟持部２と小径の非挟持部３を一体に形成し、止血弁の略中央部に縦方向の中心軸Ｓ方向に沿って、少なくとも一個以上の細孔５、６ａ、６ｂを形成した止血弁であれば全て適用することができる。
【００１２】
【発明の作用効果】
小径の第１の細孔５と当該第１の細孔５の両側に大径の第２の細孔６ａ、６ｂを連続して形成することにより、当該細孔５の裂けの拡大を防止することができ、さらに当該細孔５を形成した壁Ｗの捲れを防止すると共に前記第２の細孔６ａ、６ｂ近傍の壁面が前記カテーテルの外周を押圧して該カテーテルの上下左右の動きを安定させることができる。
非挟持部３に溝７を形成することにより、特に挿通したカテーテルを抜去時の操作抵抗を小さくすることができる。
【図面の簡単な説明】
【図１】本発明の止血弁１の上方斜視図
【図２】本発明の止血弁１の下方斜視図
【図３】本発明の止血弁１の展開図
【符号の説明】
１ 止血弁
２ 挟持部
３ 非挟持部
４ａ、４ｂ リブ
５ 第１の細孔
６ａ、６ｂ 第２の細孔
７ 溝
１０ 凹部
Ｗ 壁
Ｓ 中心軸
Ｌ 境界線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a hemostasis valve for an introducer used when a catheter or the like is introduced into a blood vessel.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, it has been known that a hemostasis valve is attached to the base of a sheath of a catheter introducer, and numerous patents have been filed for the hemostasis valve.
For example, the hemostasis valve described in Patent Document 1 is composed of a disc-shaped valve membrane body, and a pore that penetrates the hemostasis valve is formed in a substantially central portion of the hemostasis valve, and the hemostasis valve is configured around the pore. A plurality of radial slits are formed on the wall surface. However, in the hemostasis valve, when the catheter is inserted, a load applied to the wall surface on which the slit is formed becomes large, and the distal end portion of the wall surface is likely to sag, and there is a concern about liquid leakage.
[0003]
Further, the hemostasis valve of Patent Document 2 is made of a plate-like rubber-like elastic body, has a concave portion formed in a mortar shape on one surface, and forms a small hole (pore) at the center of the concave portion. A plurality of ribs and a plurality of slits extending radially from the center are formed on the surface.
The hemostasis valve has ribs on the wall where the slits are formed, so that when the catheter is inserted, the tip of the wall surface where the slits (cuts) are formed is alleviated, but the position where the slits (cuts) are formed is hemostatic. Since it is biased toward the bottom surface of the valve, the resistance when pulling out the catheter is increased and the operability is uncomfortable.
[0004]
The hemostasis valve of Patent Document 3 is composed of a thick non-clamping part and a thin clamping part. The non-clamping part has slits extending in a plurality of directions outward from the center and inserted from the top surface to the bottom surface. A plurality of half slits or grooves from the bottom surface or top surface of the non-clamping portion to the middle abdomen are formed on the outer periphery of the slit. The hemostasis valve reduces the resistance of the catheter to the thickness of the hemostasis valve composed of the non-clamping part and the clamping part by this half slit, but if the thickness of the entire hemostasis valve does not cause problems such as liquid leakage, the operation of the catheter In order to reduce the resistance, the thinner one is preferable. The thinner the hemostasis valve is, the smaller the area in contact with the outer circumference of the catheter is, so the resistance is also reduced.
Therefore, as a result of intensive studies to solve the above problems, the present inventor has reached the following invention.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 5-4843 (Page 2, FIGS. 1 to 3)
[Patent Document 2]
Japanese Unexamined Patent Publication No. 7-136285 (paragraph number [0010], FIG. 1)
[Patent Document 3]
JP-A-11-4893, (paragraph numbers [0006], [0007], FIGS. 1 to 4)
[0006]
[Means for Solving the Problems]
[1] The present invention is a hemostasis valve (1) clamped and fixed to the base of a catheter introducer,
A large-diameter clamping part (2) formed in a substantially disc shape and a small-diameter non-clamping part (3) formed in a substantially disc shape are integrally formed,
Forming a recess (10) in the upper part of the clamping part (2), forming the non-clamping part (3) in the lower part of the clamping part (2);
On the central axis (S) in the longitudinal direction of the hemostasis valve (1) and on the boundary line (L) between the clamping part (2) and the non-clamping part (3), the clamping part (2) Forming a continuous wall (W) in the non-clamping part (3);
In the approximate center of the wall (W), the first small pore (5) having a small diameter is formed along the longitudinal central axis (S) of the hemostasis valve (1) so as to penetrate the wall (W). Forming,
Second pores (6a) and (6b) having a diameter larger than that of the first pore (5) are continuously formed in the upper and lower portions of the first pore (5), respectively, Provided is a hemostasis valve (1) for a catheter introducer in which a second fine pore (6a) on the upper side is formed in the lower part of the recess (10).
[2] In the present invention , a plurality of ribs (4b) are arranged radially on the surface on the non-clamping part (3) side around the second pore (6b), and the non-clamping part (3 ) To form a groove (7), and the groove (7)
(A) the Hikyoji portion (3) the outer edge and grooves formed circumferentially between the outer edge of the rib (4b) of (7), or (B) circumferentially below the rib (4b) Groove (7) formed,
A hemostasis valve (1) for a catheter introducer according to [1] is provided.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 is an upper perspective view of the hemostasis valve 1 of the present invention, and FIG. 2 is a lower perspective view of the hemostasis valve 1 of FIG. 3A and 3B are development views of the hemostasis valve 1. FIG. 3A is a plan view, FIG. 3B is a cross-sectional view taken along the line A-A 'in FIG. 3A, and FIG.
The hemostasis valve 1 of the present invention has a large-diameter pinching portion 2 and a small-diameter non-pinching portion 3 that are formed in a substantially disc shape and are integrally formed along the longitudinal central axis S at a substantially central portion of the hemostasis valve 1. First small pores (5) are formed, and second large pores (6a) (6b) are continuously formed on both sides of the first pores (5). Yes.
The first pore 5 is formed through the wall W in the approximate center of the wall W continuous to the sandwiching portion 2 and the non-sandwich portion 3.
In the present invention, the first pore 5 is a hole through which the catheter passes through the hemostasis valve 1. For example, the first pore 5 has the same pore or cut (also referred to as a slit) as the trace of the puncture of the metal needle into the elastic body. means.
The second pores 6 a and 6 b are pores formed in communication with both the upper and lower sides of the first pore 5 and have a larger diameter than the first pore 5. Hole. When the catheter is inserted through the first pore 5 by forming the second pores 6a and 6b, it is possible to prevent the tear of the pore 5 from being expanded and further suppress the wall W from being blistered. At the same time, liquid leakage can be suppressed at the same time. Furthermore, since the wall surfaces in the vicinity of the pores 6a and 6b are in close contact with the outer periphery of the catheter, the catheter can be held even when it moves up and down and left and right when it is moved back and forth.
[0008]
As illustrated in FIG. 3 (b), the diameter of the non-clamping part 3 is formed to be approximately half the diameter of the clamping part 2, and the thickness of the non-clamping part 3 is the same as that of the clamping part 2. It is formed thinner than the thickness.
In the hemostasis valve 1 of the present invention, the position of the wall W in which the first pore 5 is formed is substantially at the center of the hemostasis valve 1, that is, on the longitudinal center axis S of the hemostasis valve 1, and It is arranged on the boundary line L between the clamping part 2 and the non-clamping part 3. For this reason, the resistance of a catheter or the like (not shown) passing through the first pore 5 can be evenly dispersed and absorbed by the sandwiching portion 2 and the non- sandwiching portion 3.
The hemostasis valve 1 of the present invention is formed of an elastic body such as synthetic rubber such as silicone rubber or natural rubber. In particular, it is preferably formed of silicone rubber.
The first pore 5 is normally in a closed state. When the catheter is inserted into the closed first pore 5, the wall W is in close contact with the outer periphery of the catheter, and the catheter is gradually inserted while maintaining a liquid-tight state. When the catheter is removed, the first pores 5 opened by the catheter are gradually closed.
[0009]
A recess 10 is formed on the top surface of the sandwiching portion 2, and the second pore 6 a is formed at the bottom of the recess 10. The concave portion 10 is formed in a mortar shape so that the catheter can be easily guided to the first pore 5. That is, when the catheter is inserted into the first pore 5, the area where the outer periphery of the catheter is in direct contact with the sandwiching portion 2 can be reduced, and the insertion resistance of the catheter can be reduced.
Further, the diameter (size) of the concave portion 10 is formed smaller than the diameter of the non-clamping portion 3. The diameter (size) of the recess 10 is related to the resistance when the catheter is inserted and removed from the first pore 5, and the resistance decreases as the diameter of the recess 10 increases. The pressure resistance of is also reduced. Therefore, it is preferable that the diameter (size) of the concave portion 10 is formed to be approximately half the diameter of the sandwiching portion 2.
[0010]
In the hemostasis valve 1 of the present invention, ribs 4a and 4b are formed on the surface on the clamping part 2 side and on the surface on the non-clamping part 3 side, respectively.
That is, a plurality of ribs 4a are arranged radially (for example, Y-shaped, cross-shaped, etc.) in the recess 10 around the second pore 6a on the surface of the sandwiching portion 2 side, On the surface, a plurality of ribs 4b are arranged radially (for example, Y-shaped, cross-shaped, etc.) around the second pore 6b.
If the ribs 4a and 4b are arranged at positions where they overlap each other on the holding part 2 side and the non-clamping part 3 side, the entire hemostatic valve 1 becomes too hard and the operation resistance becomes high. Therefore, by arranging the ribs 4a and 4b alternately so as not to overlap the respective surfaces of the clamping part 2 side and the non-clamping part 3 side, an appropriate strength is given to the entire hemostasis valve 1 and the operation resistance is lowered. In addition, when the catheter is inserted and removed by the ribs 4a and 4b, the holding force of the catheter can be made uniform and stable.
[0011]
In addition, the hemostasis valve 1 of the present invention has a groove 7 formed in the non-clamping portion 3 as illustrated in FIGS. 2 and 3B and 3C. The groove 7 is formed circumferentially between the outer edge of the non-clamping portion 3 and the outer edge of the rib 4b (or may be formed circumferentially below the rib 4b). By forming the non-clamping part 3 integrally with the clamping part 2, the hemostasis valve 1 as a whole becomes thick and the operation resistance (especially the resistance force when the catheter is removed) increases, so that the groove 7 is formed. As a result, the operating resistance can be reduced. The position where the groove 7 is formed may be anywhere as long as it is the non-clamping portion 3. As shown in FIGS. 2 and 3 (b) and (c), it may be formed on the surface of the non-clamping part 3, or may be formed on the side wall surface or the wall surface of the non-clamping part 3. Thus, the operation resistance can be adjusted by appropriately adjusting the formation position, shape, width, depth, and the like of the groove 7.
In this embodiment (forming the groove 7 in the non-clamping part 3), the large-diameter clamping part 2 and the small-diameter non-clamping part 3 are integrally formed, and the longitudinal center axis S is formed at the substantially central part of the hemostasis valve. Any hemostasis valve in which at least one or more pores 5, 6a, 6b are formed along the direction can be applied.
[0012]
[Effects of the invention]
By continuously forming the small-diameter first pore 5 and the large-diameter second pores 6 a and 6 b on both sides of the first pore 5, it is possible to prevent the tear of the pore 5 from expanding. Further, the wall W in the vicinity of the second pores 6a and 6b presses the outer circumference of the catheter to stabilize the vertical and horizontal movement of the catheter. Can be made.
By forming the groove 7 in the non-clamping portion 3, it is possible to reduce the operation resistance particularly when the inserted catheter is removed.
[Brief description of the drawings]
FIG. 1 is an upper perspective view of the hemostasis valve 1 of the present invention. FIG. 2 is a lower perspective view of the hemostasis valve 1 of the present invention. FIG. 3 is a development view of the hemostasis valve 1 of the present invention.
DESCRIPTION OF SYMBOLS 1 Hemostatic valve 2 Clamping part 3 Non-clamping part 4a, 4b Rib 5 1st pore 6a, 6b 2nd pore 7 Groove 10 Recess W Wall S Central axis L Boundary line

Claims (2)

カテーテルイントロデューサーの基部に挟持固定する止血弁（１）であって、
略円盤状に形成された大径の挟持部（２）と略円盤状に形成された小径の非挟持部（３）を一体に形成し、
前記挟持部（２）の上部に凹部（１０）を形成し、前記挟持部（２）の下部に前記非挟持部（３）を形成し、
止血弁（１）の縦方向の中心軸（Ｓ）上であってかつ、前記挟持部（２）と前記非挟持の境界線（Ｌ）上に、前記挟持部（２）と前記非挟持部（３）に連続する壁（Ｗ）を形成し、
当該壁（Ｗ）の略中央に、当該壁（Ｗ）を貫通するように、止血弁（１）の縦方向の中心軸（Ｓ）に沿って、小径の第１の細孔（５）を形成し、
当該第１の細孔（５）の上部と下部に、それぞれ当該第１の細孔（５）よりも大径の第２の細孔（６ａ）、（６ｂ）を連続して形成し、前記上部側の第２の細孔（６ａ）を前記凹部（１０）の下部に形成した、ことを特徴とするカテーテルイントロデューサー用止血弁（１）。A hemostasis valve (1) clamped and secured to the base of the catheter introducer,
A large-diameter clamping part (2) formed in a substantially disc shape and a small-diameter non-clamping part (3) formed in a substantially disc shape are integrally formed,
Forming a recess (10) in the upper part of the clamping part (2), forming the non-clamping part (3) in the lower part of the clamping part (2);
On the longitudinal center axis (S) of the hemostasis valve (1) and on the clamping part (2) and the non-clamping boundary line (L), the clamping part (2) and the non-clamping part Forming a continuous wall (W) in (3),
In the approximate center of the wall (W), the first small pore (5) having a small diameter is formed along the longitudinal central axis (S) of the hemostasis valve (1) so as to penetrate the wall (W). Forming,
Second pores (6a) and (6b) having a diameter larger than that of the first pore (5) are continuously formed in the upper and lower portions of the first pore (5), respectively, A hemostasis valve (1) for a catheter introducer characterized in that an upper second pore (6a) is formed in the lower part of the recess (10). 前記非挟持部（３）側の面に、前記第２の細孔（６ｂ）を中心に複数のリブ（４ｂ）を放射状に配置し、かつ前記非挟持部（３）に、溝（７）を形成し、当該溝（７）は、
（Ａ）当該非挟持部（３）の外縁と前記リブ（４ｂ）の外縁の間に円周状に形成した溝（７）、または
（Ｂ）前記リブ（４ｂ）の下方に円周状に形成した溝（７）、
であることを特徴とする請求項１に記載のカテーテルイントロデューサー用止血弁（１）。 A plurality of ribs (4b) are arranged radially on the non-clamping part (3) side surface with the second pore (6b) as a center, and a groove (7) is formed in the non-clamping part (3). And the groove (7)
(A) the Hikyoji portion (3) the outer edge and grooves formed circumferentially between the outer edge of the rib (4b) of (7), or (B) circumferentially below the rib (4b) Groove (7) formed,
The hemostasis valve (1) for a catheter introducer according to claim 1, characterized in that:
JP2002324790A 2002-11-08 2002-11-08 Hemostasis valve for catheter introducers Expired - Fee Related JP4253174B2 (en)

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CN101808691B (en) * 2007-09-27 2012-09-19 泰尔茂株式会社 Valve element and medical instrument
EP2213327B1 (en) * 2007-09-27 2013-10-30 Terumo Kabushiki Kaisha Valve element and medical instrument
EP2636102B1 (en) 2010-11-03 2017-01-25 Harting Electronics GmbH Contact element for plug-in connector socket
CN115624413B (en) * 2022-05-31 2023-08-29 湖南埃普特医疗器械有限公司 Adjustable sheath tube

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Publication number Priority date Publication date Assignee Title
US4932633A (en) * 1988-11-21 1990-06-12 Schneider-Shiley (U.S.A.) Inc. Hemostasis valve
JPH054843Y2 (en) * 1990-05-26 1993-02-08
JPH0639011U (en) * 1992-11-02 1994-05-24 ハナコメディカル株式会社 Hemostasis valve
JPH07136285A (en) * 1993-11-17 1995-05-30 Sumitomo Bakelite Co Ltd Hemostatic valve for catheter introducer
JP3785557B2 (en) * 1994-12-05 2006-06-14 日本シャーウッド株式会社 Valve for medical device
JPH0947511A (en) * 1995-08-10 1997-02-18 Nippon Zeon Co Ltd Medical valve and auxiliary inserting equipment for medical use
JPH0999090A (en) * 1995-10-06 1997-04-15 Nippon Zeon Co Ltd Medical valve disk and its production as well as medical insertion assisting implement
JPH10328308A (en) * 1997-05-29 1998-12-15 Nippon Zeon Co Ltd Medical valve body and medical insertion aid
JP3463972B2 (en) * 1997-06-13 2003-11-05 川澄化学工業株式会社 Hemostatic valve for catheter introducer
JP2002306610A (en) * 2001-02-09 2002-10-22 Fukai Kogyo Kk Seal valve for medicinal solution injection and extraction hole

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