JP3877284B2 - Medical tool holder - Google Patents

Medical tool holder Download PDF

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Publication number
JP3877284B2
JP3877284B2 JP2001325565A JP2001325565A JP3877284B2 JP 3877284 B2 JP3877284 B2 JP 3877284B2 JP 2001325565 A JP2001325565 A JP 2001325565A JP 2001325565 A JP2001325565 A JP 2001325565A JP 3877284 B2 JP3877284 B2 JP 3877284B2
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JP
Japan
Prior art keywords
flange
holder
rib
plunger
medical device
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.)
Expired - Fee Related
Application number
JP2001325565A
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Japanese (ja)
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JP2003126253A (en
Inventor
昌夫 池田
幸彦 坂口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Bakelite Co Ltd
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Sumitomo Bakelite Co Ltd
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Priority to JP2001325565A priority Critical patent/JP3877284B2/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/3129Syringe barrels
    • A61M5/3137Specially designed finger grip means, e.g. for easy manipulation of the syringe rod

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、主に1つまたは複数の医療用具を使用する際に用いられる医療用具の保持手段に関するものであり、特にシリンジのプランジャー端部のフランジを安定保持する医療用具ホルダーに関する。
【0002】
【従来の技術】
一般に医療用具が使用される際に、操作性の向上を目的として1つまたは複数の医療用具の特定部位を保持する所謂ホルダーが広く利用されている。
例えば2液性の生体組織接着剤を目的部位へ塗布または噴霧し、良好な接着シール効果を得るために、一般にはシリンジに別々に収納された各製剤を同時に適用部位へ滴下、または噴霧させる方法が取られている。この際に2本のシリンジを同時に操作可能とするために、各シリンジのバレルおよびプランジャーをそれぞれあたかも一体化したように保持する手段として、目的に特化した医療用ホルダーが採用され欠くことのできない存在となっている。2液性の生体接着剤の例では、2本のシリンジのバレルを保持するバレル用ホルダーと、プランジャーの端部を保持しプランジャーの一体操作を可能とするプランジャー用ホルダーが公知の技術として利用されており、他にもシリンジを利用した用具または機器において、ホルダーの存在は欠かせない。
【0003】
ホルダーの備えるべく性能としては、保持対象を確実に保持し、医療用具の操作中における脱落がないことが重要なのは言及するまでもないが、ホルダーを嵌合する際に要する手間や力を最小限度とし、更にホルダーを取り外す必要が生じた場合には速やかに取り外しが行える所謂簡便性も一刻を惜しむ医療現場においては必要不可欠な要素である。
一般的に、プランジャー用のホルダーはプランジャーの端部のほぼ円形のフランジ部を覆う形で保持する形態をとっている。保持する力としてはフランジの面を挟み込むようにして嵌合させ、ホルダーとの摩擦抵抗を利用したものが一般的である。理にかなった方法であり、簡便かつ有効な方法である。
【0004】
しかしながら、一般にシリンジのプランジャーは射出成形によって成形されるものであるため、射出成形品特有の抜き勾配と呼ばれる勾配を有する面が存在する。この抜き勾配はプランジャー端部の円形のフランジ部にもメーカーを問わずほとんど存在するものであり、円の面上で円の中心を通る軸、すなわちパーティングラインを境に、円の外周方向へ向けてフランジの厚さが減少するような勾配となっている。勾配の付いている面は必ずしもフランジの両面ではなく、片面のみの場合もある。
【0005】
この勾配が、ホルダーの保持力に影響を及ぼす場合がある。すなわち、シリンジは円筒状の形状を有し、プランジャーも円筒形となるため円筒の長手方向の軸を中心軸とする回転の自由度を持っているため、抜き勾配のあるフランジの姿勢が、ホルダーへの挿入の度にランダムに変化する。このため、ホルダーの嵌合設計の意図しない姿勢でフランジが嵌合される場合に、嵌合がきつすぎる、或いは緩過ぎるという問題が生じていた。嵌合が緩く保持力が低い場合には、医療用具の操作時にホルダーが外れる等の問題が生じる可能性があった。
この問題を解決する手段として、実開平1−82185号公報のように、フランジの外周を保持するフラップを設けた案が考案され実用化されているが、保持力が弱いためホルダーが脱落しやすい欠点があった。
【0006】
【発明が解決しようとする課題】
本発明の目的は前述の問題点即ち、円形のフランジを有する部位を簡便且つ確実に保持し得る医療用具ホルダーを提供することである。
【0007】
【課題を解決するための手段】
本発明は即ち、シリンジのプランジャーの端部にあるフランジと嵌合して保持するホルダーにおいて、フランジの面に接触する面の少なくとも片面に嵌合方向を長手とする凸形状のリブが設けられ、前記リブの配置が嵌合方向にフランジのほぼ中心点を通る軸にほぼ対称であり、更に少なくとも1つのリブの長さがフランジとの嵌合時にフランジの中心点が位置する高さまで達しない長さであり、少なくとも1つのリブの長さがフランジの嵌合時にフランジの中心点が位置する高さを越える長さであることを特徴とする医療用具ホルダーである。
【0008】
【発明の実施の形態】
以下、図面をもとに本発明について詳細に説明する。図1は2本のシリンジのプランジャーの末端のフランジ(3)をホルダー(1)に嵌合および嵌合する直前の状態を図示したもので、本発明の医療用具ホルダーの概要を示す図である。図2は一般的なプランジャー(2)の端部にあるフランジ(3)の形状の特徴を示した図。図3は本発明の医療用具ホルダーとフランジ(3)の嵌合の様子を示したもので、高さの異なるリブの役割を示すと共に、図3(a)と図3(b)ではフランジ(3)の姿勢によるリブとの関係の違いを示した図である。図4は本発明の医療用具ホルダーのリブの配置のバリエーションを示した図であり、図5は従来の実施例の1つを示したものである。
【0009】
図1に示すように本発明の医療用具ホルダーは、プランジャー(2)のフランジ(3)を厚さ方向に挟み込んで嵌合させる形態の医療用具ホルダーであり、挿入軸(4)方向にフランジ(3)を抜き差しすることにより着脱を行うものである。フランジ(3)をホルダー(1)に嵌合させた場合には、フランジ(3)の中心点がホルダー(1)の深さ中心軸(5)にほぼ一致する位置関係になる。
フランジ(3)の形状は従来の技術にて述べた通り、フランジ(3)の面に抜き勾配が付される。より詳細には図2に示すようにほぼフランジ(3)の中心点を通るパーティングラインを境界に外周方向へフランジ(3)の厚さが縮小する形状であり、図2(a)のようにフランジ(3)の両面に勾配面(9)が付されるものと、図2(b)に示すようにフランジ(3)の片面のみに勾配面(9)が付される場合もある。このように勾配面(9)が付されているため、プランジャー(2)の長手方向軸を中心に回転可能なフランジ(3)は、その回転により厚さの薄い個所が生じ、結果的にフランジ(3)とホルダー(1)の嵌合の強さにバラツキが生じていた。
【0010】
本発明のホルダーの構成は、図3に示すように長さのことなるリブA(6)とリブB(7)を備える。リブはホルダー(1)のフランジ(3)を挿入する位置から遠い面を起点に設けられ、更にリブA(6)、リブB(7)はリブ対称軸(8)に対称に配置され、更にリブの位置は大きく分けてリブ対称軸(8)に遠方のものと近傍のものとが必要になる。基本的にリブ対称軸(8)より遠方のリブが長さの長いリブA(6)であり、軸近くのものはフランジ(3)の中心点に達しない長さのリブB(7)である。リブA(6)とリブB(7)はホルダー(1)内面のどちらの面にあっても構わないが、リブA(6)同士、リブB(7)同士はそれぞれ同一面にあるほうがバランス的に見て望ましい。リブの配置は図4(a)〜(e)に示すようなものが考えられるが、フランジ(3)の大きさにより適切な摩擦抵抗を得るために、リブの数が増えてもなんら問題はなく、適切にフランジ(3)の面に接する位置に整然と配置することが望ましい。
【0011】
本発明のホルダーを使用した場合、図3に示すように勾配面(9)の付されたフランジ(3)は、図3(a),図3(b)のほぼ2つの姿勢をとることになる。これは長さ違いのリブにより、フランジ(3)が図3(a)と図3(b)の中間の姿勢でホルダー(1)に挿入された場合であっても、回転可能なフランジ(3)は挿入されるに従い徐々にその姿勢を矯正するものである。
【0012】
図3(a)の場合、嵌合による摩擦力は主にリブA(6)とフランジ(3)の最も厚さのある部位によって得られ、リブB(7)は勾配面(9)を押し付ける役割をなす。フランジ(3)の最も厚い部位はパーティングラインのある線上となり、リブA(6)とはほぼ点接触になるため比較的大きな摩擦力が得られるものである。ホルダー(1)の寸法は、先ずこの図3(a)のフランジ(3)の姿勢にてフランジ(3)の寸法を基準として、ホルダー(1)の剛性を考慮して材質や厚さなどの寸法を決定し、更には嵌合時にフランジ(3)を挟み込む強さを図3(a)に示す断面図を参考にしながらリブの凸高さを検討して決定することになる。凸高さが高くなれば保持力は大きくなる。挿入時の抵抗及び保持力、またホルダー(1)を取外す際の操作性などを考慮して寸法と形状および材料を決定することが重要である。なお、各リブの上面図からみた配置は図3(b)のフランジ(3)の姿勢にて決定するものである。
【0013】
図3(b)の場合には、嵌合による摩擦力は主に全てのリブA(6)、リブB(7)により得られ、各リブとフランジ(3)は基本的に線接触にて嵌合する。図3(b)の上面図を参考に、先に決定した凸高さを持つ各リブの配置を決定する。保持力を強くしたい場合にはよりリブ対称軸(8)に近く配置し、フランジ(3)の嵌合をきつくする。保持力を低くしたい場合にはリブ対称軸(8)から離れる位置に配置すればよい。ここで考慮すべき点は、フランジ(3)の姿勢によって保持力が異なる不具合を生じさせないため、図3(a)で設計した保持力と同等の保持力となるよう各リブの配置を決定することである。これにより予期せぬホルダー(1)の脱落を防ぐことが出来るものである。
【0014】
【発明の効果】
以上に述べた如く、本発明による医療用具ホルダーを用いると、特別な機構を組み込まずとも抜き勾配のあるフランジの保持において、フランジの姿勢による保持力の差がなく脱落の可能性がなくなり有用である。
【図面の簡単な説明】
【図1】 本発明の医療用具ホルダーの一例を示す。
【図2】 フランジの形状の例を3面図を用いて示す。
【図3】 本発明の医療用具ホルダーの嵌合の具体例を上面図と縦断面図を用いて示す。
【図4】 本発明の医療用具ホルダーのリブ配置の例を上面図にて示す。
【図5】 従来のホルダーの例を示す。
【符号の説明】
1 ホルダー
2 プランジャー
3 フランジ
4 挿入軸
5 深さ中心軸
6 リブA
7 リブB
8 リブ対称軸
9 勾配面
10 フラップ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medical device holding means mainly used when using one or a plurality of medical devices, and more particularly to a medical device holder that stably holds a flange at a plunger end of a syringe.
[0002]
[Prior art]
In general, when a medical device is used, a so-called holder for holding a specific part of one or a plurality of medical devices is widely used for the purpose of improving operability.
For example, in order to apply or spray a two-component biological tissue adhesive to a target site and to obtain a good adhesive seal effect, generally a method of dripping or spraying each formulation separately contained in a syringe onto the application site at the same time Has been taken. At this time, in order to be able to operate two syringes simultaneously, as a means for holding the barrel and plunger of each syringe as if they were integrated, a medical holder specialized for the purpose may not be employed. It is impossible to exist. In an example of a two-component bioadhesive, a barrel holder that holds the barrels of two syringes, and a plunger holder that holds the end of the plunger and enables the plunger to be integrated are known. In addition, the presence of a holder is indispensable in a tool or a device using a syringe.
[0003]
Needless to say, it is important that the holder should be held securely and that it will not fall off during operation of the medical device. However, the effort and force required to fit the holder is minimized. In addition, the so-called convenience that can be quickly removed when it is necessary to remove the holder is an indispensable element in the medical field where every moment is desired.
Generally, the holder for the plunger has a form of holding the substantially circular flange portion at the end of the plunger so as to cover it. Generally, the holding force is such that the surface of the flange is sandwiched and fitted and the frictional resistance with the holder is used. It is a reasonable method, simple and effective.
[0004]
However, since the plunger of a syringe is generally formed by injection molding, there exists a surface having a gradient called a draft angle specific to an injection molded product. This draft is almost present in the circular flange at the end of the plunger, regardless of the manufacturer, and on the circle surface, the axis passing through the center of the circle, that is, the parting line is the boundary direction of the circle. The gradient is such that the thickness of the flange decreases toward the front. The sloped surface is not necessarily both sides of the flange, but may be only one side.
[0005]
This gradient may affect the holding force of the holder. That is, since the syringe has a cylindrical shape and the plunger also has a cylindrical shape, it has a degree of freedom of rotation around the longitudinal axis of the cylinder as a central axis. Randomly changes each time the holder is inserted. For this reason, when the flange is fitted in an unintended posture of the fitting design of the holder, there has been a problem that the fitting is too tight or too loose. When the fitting is loose and the holding force is low, there is a possibility that a problem such as removal of the holder occurs when the medical device is operated.
As a means for solving this problem, as disclosed in Japanese Utility Model Laid-Open No. 1-82185, a proposal for providing a flap for holding the outer periphery of the flange has been devised and put into practical use. However, since the holding force is weak, the holder is likely to fall off. There were drawbacks.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide a medical device holder that can easily and reliably hold a portion having the above-mentioned problem, that is, a circular flange.
[0007]
[Means for Solving the Problems]
That is, according to the present invention, in the holder that is fitted and held with the flange at the end of the plunger of the syringe, at least one surface of the surface that contacts the surface of the flange is provided with a convex rib having a long fitting direction. The arrangement of the ribs is substantially symmetric with respect to an axis passing through the substantially center point of the flange in the mating direction, and the length of at least one rib does not reach the height at which the center point of the flange is located when mating with the flange. The medical device holder is characterized in that the length of the at least one rib exceeds the height at which the center point of the flange is located when the flange is fitted .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 illustrates a state just before fitting and fitting the end flanges (3) of the plungers of two syringes to the holder (1), and is a diagram showing an outline of the medical device holder of the present invention. is there. FIG. 2 is a view showing the characteristics of the shape of the flange (3) at the end of a general plunger (2). FIG. 3 shows how the medical device holder of the present invention and the flange (3) are fitted together, and shows the role of ribs having different heights. In FIGS. 3 (a) and 3 (b), the flange ( It is the figure which showed the difference in the relationship with the rib by the attitude | position of 3). FIG. 4 is a view showing variations in the arrangement of the ribs of the medical device holder of the present invention, and FIG. 5 shows one of the conventional embodiments.
[0009]
As shown in FIG. 1, the medical device holder of the present invention is a medical device holder having a configuration in which the flange (3) of the plunger (2) is sandwiched and fitted in the thickness direction, and the flange is formed in the insertion shaft (4) direction. (3) is attached and detached by inserting and removing. When the flange (3) is fitted to the holder (1), the positional relationship is such that the center point of the flange (3) substantially coincides with the depth center axis (5) of the holder (1).
The shape of the flange (3) is given a draft on the surface of the flange (3) as described in the prior art. More specifically, as shown in FIG. 2, the thickness of the flange (3) is reduced in the outer circumferential direction with a parting line passing through the center point of the flange (3) as a boundary, as shown in FIG. 2 (a). In some cases, the slope (9) is provided on both sides of the flange (3), and on one side of the flange (3), as shown in FIG. 2 (b), the slope (9) is provided. Since the inclined surface (9) is attached in this manner, the flange (3) that can rotate around the longitudinal axis of the plunger (2) has a thin portion due to its rotation, and as a result, There was variation in the strength of fitting between the flange (3) and the holder (1).
[0010]
The structure of the holder of the present invention is provided with rib A (6) and rib B (7) having different lengths as shown in FIG. The ribs are provided starting from a surface far from the position of inserting the flange (3) of the holder (1), and the ribs A (6) and B (7) are arranged symmetrically with respect to the rib symmetry axis (8). The positions of the ribs are roughly divided, and those far from and near the rib symmetry axis (8) are required. Basically, the rib A (6) whose length is longer than the rib symmetry axis (8) is the long rib A (6), and the rib near the axis is the rib B (7) whose length does not reach the center point of the flange (3). is there. The rib A (6) and the rib B (7) may be on either side of the inner surface of the holder (1), but it is more balanced that the ribs A (6) and the ribs B (7) are on the same plane. This is desirable. The arrangement of the ribs can be as shown in FIGS. 4A to 4E. However, in order to obtain an appropriate frictional resistance depending on the size of the flange (3), there is no problem even if the number of ribs is increased. However, it is desirable to arrange them properly at positions where they contact the surface of the flange (3) appropriately.
[0011]
When the holder of the present invention is used, the flange (3) with the inclined surface (9) as shown in FIG. 3 takes almost two postures as shown in FIGS. 3 (a) and 3 (b). Become. This is because the flange (3) can be rotated by the rib (3) which is rotatable even when the flange (3) is inserted into the holder (1) in an intermediate position between FIG. 3 (a) and FIG. 3 (b). ) Gradually corrects its posture as it is inserted.
[0012]
In the case of FIG. 3A, the frictional force due to the fitting is mainly obtained by the thickest part of the rib A (6) and the flange (3), and the rib B (7) presses the inclined surface (9). Play a role. The thickest part of the flange (3) is on a line with a parting line, and is in a point contact with the rib A (6), so that a relatively large frictional force can be obtained. The dimensions of the holder (1) are determined by considering the rigidity of the holder (1) in the posture of the flange (3) in FIG. The dimensions are determined, and the strength with which the flange (3) is sandwiched at the time of fitting is determined by examining the convex height of the rib with reference to the sectional view shown in FIG. As the convex height increases, the holding force increases. It is important to determine the size, shape, and material in consideration of resistance and holding force during insertion and operability when removing the holder (1). In addition, the arrangement | positioning seen from the top view of each rib is determined by the attitude | position of the flange (3) of FIG.3 (b).
[0013]
In the case of FIG. 3B, the frictional force due to the fitting is obtained mainly by all the ribs A (6) and ribs B (7), and each rib and the flange (3) are basically in line contact. Mating. With reference to the top view of FIG. 3B, the arrangement of the ribs having the convex height determined in advance is determined. When it is desired to increase the holding force, it is arranged closer to the rib symmetry axis (8) and the flange (3) is tightly fitted. When it is desired to reduce the holding force, it may be arranged at a position away from the rib symmetry axis (8). The point to be considered here is to determine the arrangement of the ribs so that the holding force equivalent to the holding force designed in FIG. That is. As a result, the holder (1) can be prevented from falling off unexpectedly.
[0014]
【The invention's effect】
As described above, when the medical device holder according to the present invention is used, holding a flange having a draft angle without incorporating a special mechanism is useful because there is no difference in holding force depending on the flange posture and there is no possibility of dropping. is there.
[Brief description of the drawings]
FIG. 1 shows an example of a medical device holder of the present invention.
FIG. 2 shows an example of the shape of a flange using a three-view drawing.
FIG. 3 shows a specific example of fitting of the medical device holder of the present invention using a top view and a longitudinal sectional view.
FIG. 4 is a top view showing an example of rib arrangement of the medical device holder of the present invention.
FIG. 5 shows an example of a conventional holder.
[Explanation of symbols]
1 Holder 2 Plunger 3 Flange 4 Insertion Shaft 5 Depth Center Shaft 6 Rib A
7 Rib B
8 Rib symmetry axis 9 Gradient surface 10 Flap

Claims (1)

シリンジのプランジャーの端部にあるフランジと嵌合して保持するホルダーにおいて、フランジの面に接触する面の少なくとも片面に嵌合方向を長手とする凸形状のリブが設けられ、前記リブの配置が嵌合方向にフランジのほぼ中心点を通る軸にほぼ対称であり、更に少なくとも1つのリブの長さがフランジとの嵌合時にフランジの中心点が位置する高さまで達しない長さであり、少なくとも1つのリブの長さがフランジの嵌合時にフランジの中心点が位置する高さを越える長さであることを特徴とする医療用具ホルダー。In the holder that is fitted and held with the flange at the end of the plunger of the syringe, a convex rib having a fitting direction as a longitudinal direction is provided on at least one surface of the surface that contacts the surface of the flange. Is substantially symmetric with respect to an axis passing through the substantially center point of the flange in the fitting direction, and the length of at least one rib does not reach the height at which the center point of the flange is located when mated with the flange, A medical device holder, wherein the length of at least one rib exceeds the height at which the center point of the flange is located when the flange is fitted .
JP2001325565A 2001-10-23 2001-10-23 Medical tool holder Expired - Fee Related JP3877284B2 (en)

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JP2001325565A JP3877284B2 (en) 2001-10-23 2001-10-23 Medical tool holder

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Application Number Priority Date Filing Date Title
JP2001325565A JP3877284B2 (en) 2001-10-23 2001-10-23 Medical tool holder

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Publication Number Publication Date
JP2003126253A JP2003126253A (en) 2003-05-07
JP3877284B2 true JP3877284B2 (en) 2007-02-07

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