JP2005198875A - Syringe assembly - Google Patents

Syringe assembly Download PDF

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Publication number
JP2005198875A
JP2005198875A JP2004009096A JP2004009096A JP2005198875A JP 2005198875 A JP2005198875 A JP 2005198875A JP 2004009096 A JP2004009096 A JP 2004009096A JP 2004009096 A JP2004009096 A JP 2004009096A JP 2005198875 A JP2005198875 A JP 2005198875A
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Japan
Prior art keywords
flange
plunger
rear end
syringe assembly
filter
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JP2004009096A
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Japanese (ja)
Inventor
Yasuo Obika
靖夫 小比賀
Takaaki Oshige
貴昭 大重
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SB Kawasumi Laboratories Inc
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Kawasumi Laboratories Inc
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Priority to JP2004009096A priority Critical patent/JP2005198875A/en
Publication of JP2005198875A publication Critical patent/JP2005198875A/en
Pending legal-status Critical Current

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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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/001—Apparatus specially adapted for cleaning or sterilising syringes or needles
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3121—Means preventing contamination of the medicament compartment of a syringe via the proximal end of a syringe, i.e. syringe end opposite to needle cannula mounting end

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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)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a syringe assembly which enables EOG to surely be permeated therein even in gas sterilization by the EOG and is easy to operate since there is no resistance in operation. <P>SOLUTION: The syringe assembly 11 has an outer cover 10 interposed between a flange 4 formed at the rear end of a cylinder 2 and a flange 6 formed at the rear end of a plunger 5 so as to cover the space between both flanges, wherein at the flange 6 formed at the plunger 5, an aperture 7 is formed and a filter 8 is mounted to the flange 6, at the rear end of the outer cover 10, an opening part 13 is formed, so that the internal spaces of the cylinder 2 and the outer cover 10 can be communicated with outside air through the filter 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は筒体の後端部に設けたフランジとプランジャーの後端部に設けたフランジの間に外装カバーを覆った状態で介在させた注射器アセンブリの改良に関するものであり、ガス滅菌時の通気性の確保及び使用時の操作性を改良したものである。   The present invention relates to an improvement of a syringe assembly that is interposed between a flange provided at a rear end portion of a cylinder and a flange provided at a rear end portion of a plunger in a state where an outer cover is covered, and at the time of gas sterilization. This ensures improved ventilation and operability during use.

例えば特許文献１には、注射筒（筒体ともいう）の後端部に設けたフランジとピストン（プランジャーともいう）の後端部に設けたフランジの間に中空蛇腹状の弾性被膜体をピストンの外周面を覆った状態で介在させた注射器アセンブリの発明が開示されている。
また特許文献２には、プランジャーロッド（単にプランジャーともいう）の細長い本体部の開口部から突出している部分を収容する弾性筒形外装からなる可撓性のカバーの発明であって、プランジャーロッドがこのカバーを破ることなく移動して注射器を作動させ得るに十分な可撓性と強度とをもち、室とその周囲との間での流体および微粒物質の移動を阻止するのに役立つバリヤーとして機能するカバーと、外装が中空筒基端部に巻き込まれないように外装をプランジャーロッドの細長い本体部から空間を隔てて保持するための支持手段とから構成される注射器アセンブリの発明が開示されている。 For example, in Patent Document 1, a hollow bellows-like elastic coating body is provided between a flange provided at the rear end of an injection cylinder (also referred to as a cylinder) and a flange provided at a rear end of a piston (also referred to as a plunger). An invention of a syringe assembly interposed with the outer peripheral surface of a piston covered is disclosed.
Further, Patent Document 2 discloses an invention of a flexible cover having an elastic cylindrical exterior that accommodates a portion protruding from an opening of an elongated main body portion of a plunger rod (also simply referred to as a plunger). It is flexible and strong enough to allow the jar rod to move without breaking this cover and actuate the syringe, helping to prevent fluid and particulate matter from moving between the chamber and its surroundings An invention of a syringe assembly comprising a cover functioning as a barrier, and support means for holding the sheath spaced apart from the elongated main body portion of the plunger rod so that the sheath is not wound around the proximal end of the hollow cylinder. It is disclosed.

特許文献１ないし特許文献２に記載の発明は、筒体（注射筒）の後端からプランジャーを外装カバーで被覆し、外気との接触を完全に遮断しているため、筒体内部及び外装カバーの空気は外部へ通気することはできない。このため（１）滅菌時に、プランジャー、筒体及び外装カバーの内部壁面にエチレンオキサイドガス（以下、ＥＯＧ）が浸透しにくく（浸透しない）ので、滅菌が完全にできない。（２）操作時に筒体内部の空気が外装カバー内にうまく収まらない場合に、抵抗を感じ、操作しにくい等の難点が指摘される。   In the inventions described in Patent Documents 1 and 2, since the plunger is covered with an exterior cover from the rear end of the cylinder (injection cylinder) and contact with the outside air is completely blocked, the interior of the cylinder and the exterior Cover air cannot be vented to the outside. For this reason, (1) During sterilization, ethylene oxide gas (hereinafter referred to as EOG) hardly penetrates (does not penetrate) into the inner wall surfaces of the plunger, the cylindrical body, and the outer cover, so that sterilization cannot be completed. (2) When the air inside the cylinder does not fit well in the exterior cover during operation, it is pointed out that it is difficult to operate and feels resistance.

実開昭５３−５５２８９号公報（図１から３）Japanese Utility Model Publication No. 53-55289 (FIGS. 1 to 3) 特公平６−９１９００号公報（図１から７）Japanese Patent Publication No. 6-91900 (FIGS. 1 to 7)

本発明が解決しようとする問題点は、通気性が悪くガス滅菌を充分に行えず、操作しずらい点である。   The problem to be solved by the present invention is that the gas permeability is poor and gas sterilization cannot be performed sufficiently, and it is difficult to operate.

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。
［１］本発明は、筒体（２）の後端部に設けたフランジ（４）とプランジャー（５）の後端部に設けたフランジ（６）の間に外装カバー（１０）を覆った状態で介在させた注射器アセンブリにおいて、
プランジャー（５）のフランジ（６）に開口部（７）を形成し、当該フランジ（６）にフィルター（８）を装着し、
外装カバー（１０）後端部に開放部（１３）を形成し、
筒体（２）と外装カバー（１０）の内部空間が前記フィルター（８）を介して外気と連通することができるように形成した注射器アセンブリ（１）を提供する。
［２］本発明は、外装カバー（１０）に波状部（１２）を形成した［１］に記載の注射器アセンブリ（１）を提供する。 Therefore, as a result of intensive studies to solve the above problems, the present inventor has reached the following invention.
[1] The present invention covers the exterior cover (10) between the flange (4) provided at the rear end of the cylinder (2) and the flange (6) provided at the rear end of the plunger (5). In a syringe assembly interposed between
An opening (7) is formed in the flange (6) of the plunger (5), and a filter (8) is attached to the flange (6).
Forming an opening (13) at the rear end of the exterior cover (10);
Provided is a syringe assembly (1) formed so that an internal space between a cylindrical body (2) and an outer cover (10) can communicate with outside air through the filter (8).
[2] The present invention provides the syringe assembly (1) according to [1], wherein the outer cover (10) has a corrugated portion (12).

（１）ＥＯＧによるガス滅菌でもプランジャー５、筒体２及び外装カバー１０内部にまで、確実にＥＯＧを浸透させることができる。
（２）操作時に筒体２内部の空気を容易に、外装カバー１０内に収めることができるので、抵抗がなく操作しやすい。
（３）筒体２とプランジャー５の押し引き操作を繰り返した場合にも、外装カバー１０が、筒体２とプランジャー５の間に巻き込まれることはなく、操作しやすい。 (1) Even in the gas sterilization with EOG, the EOG can be surely permeated into the plunger 5, the cylinder 2, and the exterior cover 10.
(2) Since the air inside the cylindrical body 2 can be easily accommodated in the exterior cover 10 during operation, it is easy to operate without resistance.
(3) Even when the pushing and pulling operation of the cylindrical body 2 and the plunger 5 is repeated, the exterior cover 10 is not caught between the cylindrical body 2 and the plunger 5 and is easy to operate.

図１は、本発明の注射器アセンブリの概略図で、図２は図１の断面図、図３と図４はプランジャーの一部拡大図である。
本発明は、筒体２の後端部に設けたフランジ４とプランジャー５の後端部に設けたフランジ６の間に外装カバー１０を覆った状態で介在させた注射器アセンブリ１において、プランジャー５のフランジ６に開口部７を形成し、当該フランジ６にフィルター８を装着し、外装カバー１０後端部に開放部１３を形成し、筒体２と外装カバー１０の内部空間が前記フィルター８を介して外気と連通することができるように形成した注射器アセンブリ１である。 FIG. 1 is a schematic view of the syringe assembly of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIGS. 3 and 4 are partially enlarged views of a plunger.
The present invention relates to a syringe assembly 1 in which an outer cover 10 is interposed between a flange 4 provided at a rear end portion of a cylinder 2 and a flange 6 provided at a rear end portion of a plunger 5. 5 is formed with an opening 7, a filter 8 is attached to the flange 6, an open portion 13 is formed at the rear end of the exterior cover 10, and the internal space between the cylinder 2 and the exterior cover 10 is the filter 8 It is the syringe assembly 1 formed so that it could communicate with external air via.

［プランジャー５］
プランジャー５の後端部に設けたフランジ６の中央部に開口部７を形成し、当該開口部７を覆うように、フランジ６にフィルター８が装着されている。
フィルター８は、図３ないし図４に例示するように、フランジ６とリング９の間に挟持して固定することができる。フランジ６、フィルター８及びリング９の材質は、熱、高周波、超音波、接着剤等により相互に固定できるものであれば何でも良い。
フィルター８はフランジ６とリング９の間に固定することにより、安定した形状で固定することができ、剥がれも生じにくい。
本発明では、フィルター８がフランジ６より剥がれなければ、装着方法は何でも良く、フランジ６に直接フィルター８を、熱、高周波、超音波、接着剤、溶剤等で装着しても良い。
またプランジャー５の先端には、ストッパー１５が装着され、筒体２との間を気密に封止している。ストッパー１５は、公知の形状、材質のものを使用することができる。
プランジャー５も公知の形状、材質のものを使用することができる。
［フィルター８］
フィルター８は通気性を有するフィルターで、例えば０．２μm〜０．５μmの孔を有する。フィルター８の材質は、例えばポリテトラフルオロエチレン、ポリエチレンテレフタラート、ポリアミド、ポリウレタン等が使用されるが、通気性を有するものであれば何でも良い。
［外装カバー１０］
外装カバー１０は図１ないし図２に例示するように、大径の先端部１１と複数の波状部１２より形成され、後端部には開放部１３が形成されている。
外装カバー１０は筒体２の後端部に設けたフランジ４とプランジャー５の後端部に設けたフランジ６の間に、装着される。
外装カバー１０は、複数の波状部１２を形成することにより、これらの部分がおりたたみやすくなり、筒体２とプランジャー５の押し引き操作を繰り返しても外装カバー１０は、筒体２とプランジャー５間に巻き込まれることはない。
外装カバー１０の材質は、例えばプラスチック材料、熱可塑性エラストマー、合成ないし天然ゴム等が使用されるが、波状部１２よりおりたたみやすいものであれば何でも良い。
波状部１２の形状も図１に例示したものに限定されず、おりたたみやすい形状であれば何でも良い。 [Plunger 5]
An opening 7 is formed at the center of the flange 6 provided at the rear end of the plunger 5, and a filter 8 is attached to the flange 6 so as to cover the opening 7.
As illustrated in FIGS. 3 to 4, the filter 8 can be fixed by being sandwiched between the flange 6 and the ring 9. Any material may be used for the flange 6, the filter 8, and the ring 9 as long as they can be fixed to each other by heat, high frequency, ultrasonic waves, adhesive, or the like.
The filter 8 can be fixed in a stable shape by being fixed between the flange 6 and the ring 9, and is not easily peeled off.
In the present invention, as long as the filter 8 is not peeled off from the flange 6, any mounting method may be used.
A stopper 15 is attached to the tip of the plunger 5 and hermetically seals between the cylinder 2. The stopper 15 can be of a known shape and material.
A plunger 5 having a known shape and material can also be used.
[Filter 8]
The filter 8 is a breathable filter and has, for example, pores of 0.2 μm to 0.5 μm. The material of the filter 8 is, for example, polytetrafluoroethylene, polyethylene terephthalate, polyamide, polyurethane or the like, but any material can be used as long as it has air permeability.
[Exterior cover 10]
As illustrated in FIGS. 1 and 2, the exterior cover 10 is formed by a large-diameter leading end portion 11 and a plurality of corrugated portions 12, and an open portion 13 is formed at the rear end portion.
The exterior cover 10 is mounted between the flange 4 provided at the rear end portion of the cylinder 2 and the flange 6 provided at the rear end portion of the plunger 5.
The exterior cover 10 is formed with a plurality of corrugated portions 12 so that these portions can be easily folded. Even if the pushing and pulling operation of the tubular body 2 and the plunger 5 is repeated, the exterior cover 10 is made of the tubular body 2 and the plunger. It is not caught between five.
The material of the exterior cover 10 is, for example, a plastic material, a thermoplastic elastomer, synthetic or natural rubber, and any material can be used as long as it can be easily folded from the corrugated portion 12.
The shape of the corrugated portion 12 is not limited to the shape illustrated in FIG.

本発明の注射器アセンブリの概略図Schematic of the syringe assembly of the present invention 図１の断面図Sectional view of FIG. プランジャーの一部拡大図Partial enlarged view of plunger プランジャーの一部拡大図Partial enlarged view of plunger

符号の説明Explanation of symbols

１ 注射器アセンブリ
２ 筒体
３ 先端
４ 空間
５ プランジャー
６ フランジ
７ 開口部
８ フィルター
９ リング
１０ 外装カバー
１１ 先端部
１２ 波状部
１３ 開放部
１５ ストッパー DESCRIPTION OF SYMBOLS 1 Syringe assembly 2 Cylindrical body 3 Front-end | tip 4 Space 5 Plunger 6 Flange 7 Opening part 8 Filter 9 Ring 10 Exterior cover 11 End part 12 Wave-like part 13 Opening part 15 Stopper

Claims (2)

筒体（２）の後端部に設けたフランジ（４）とプランジャー（５）の後端部に設けたフランジ（６）の間に外装カバー（１０）を覆った状態で介在させた注射器アセンブリにおいて、
プランジャー（５）のフランジ（６）に開口部（７）を形成し、当該フランジ（６）にフィルター（８）を装着し、
外装カバー（１０）後端部に開放部（１３）を形成し、
筒体（２）と外装カバー（１０）の内部空間が前記フィルター（８）を介して外気と連通することができるように形成した、ことを特徴とする注射器アセンブリ（１）。 Syringe interposed between the flange (4) provided at the rear end of the cylinder (2) and the flange (6) provided at the rear end of the plunger (5) with the outer cover (10) covered. In assembly,
An opening (7) is formed in the flange (6) of the plunger (5), and a filter (8) is attached to the flange (6).
Forming an opening (13) at the rear end of the exterior cover (10);
A syringe assembly (1) characterized in that the inner space of the cylinder (2) and the outer cover (10) is formed so as to be able to communicate with outside air through the filter (8). 外装カバー（１０）に波状部（１２）を形成したことを特徴とする請求項１に記載の注射器アセンブリ（１）。   Syringe assembly (1) according to claim 1, characterized in that a corrugated part (12) is formed in the outer cover (10).
JP2004009096A 2004-01-16 2004-01-16 Syringe assembly Pending JP2005198875A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11541181B2 (en) 2017-10-26 2023-01-03 Biosafe S.A. Sterile syringe comprising a non-sliding seal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11541181B2 (en) 2017-10-26 2023-01-03 Biosafe S.A. Sterile syringe comprising a non-sliding seal

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