JP4970430B2 - 留置針組立体 - Google Patents
留置針組立体 Download PDFInfo
- Publication number
- JP4970430B2 JP4970430B2 JP2008512040A JP2008512040A JP4970430B2 JP 4970430 B2 JP4970430 B2 JP 4970430B2 JP 2008512040 A JP2008512040 A JP 2008512040A JP 2008512040 A JP2008512040 A JP 2008512040A JP 4970430 B2 JP4970430 B2 JP 4970430B2
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- Prior art keywords
- needle
- seal member
- inner needle
- indwelling
- hub
- 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
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- 229940036348 bismuth carbonate Drugs 0.000 description 1
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- GMZOPRQQINFLPQ-UHFFFAOYSA-H dibismuth;tricarbonate Chemical compound [Bi+3].[Bi+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O GMZOPRQQINFLPQ-UHFFFAOYSA-H 0.000 description 1
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Images
Classifications
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0618—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard
- A61M25/0625—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard with a permanent connection to the needle hub, e.g. a guiding rail, a locking mechanism or a guard advancement mechanism
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0637—Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
- A61M2005/325—Means obstructing the needle passage at distal end of a needle protection sleeve
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3273—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel freely sliding on needle shaft without connection to syringe or needle
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3275—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel being connected to the needle hub or syringe by radially deflectable members, e.g. longitudinal slats, cords or bands
Description
このフラッシュバックを確認したら、外針を進め、外針を血管内に挿入する。
生体表面に穿刺して用いられる留置針組立体であって、
先端に鋭利な針先を有する内針と、
前記内針の基端部に固定された内針ハブと、
前記内針が挿通される中空の外針と、
前記外針の基端部に固定され、チューブが接続される接続部を有する外針ハブと、
前記外針ハブの内部空間に設けられ、前記内針を挿通可能な孔を有するシール部材を有するシール手段とを備え、
前記シール部材は、水膨潤性を有し、その膨潤率が2〜50倍である膨潤性材料で構成され、
前記シール手段は、前記外針ハブの内部空間に設けられ、前記内針を挿通可能な孔を有し、弾性材料で構成された第2のシール部材をさらに有し、
前記シール部材と前記第2のシール部材とは、前記内針の挿通方向に沿って隣接して配置され、
前記シール部材および前記第2のシール部材から前記内針を抜去した際に、該内針に付着した体液に前記シール部材が接触することにより、前記シール部材が膨潤し膨張して、該シール部材の孔が閉塞するとともに、前記第2のシール部材の自己閉塞性により該第2のシール部材の孔が閉塞することを特徴とする留置針組立体である。
第1図は、本発明の留置針組立体の第1実施形態を示す斜視図、第2図〜第5図は、それぞれ、第1図中のA−A線断面図、第6図は、第2図中の領域[B]の拡大図、第7図は、第3図中の領域[C]の拡大図、第8図は、第1図に示す留置針組立体の第5図に対応する斜視図、第9図は、第1図に示す留置針組立体において、内針ハブからチューブを取り外した状態を示す斜視図である。
孔81は、その横断面形状が円形をなし、シール部材8の長手方向に沿って貫通したものである。孔81の内径は、特に限定されないが、例えば、内針4の最小外径部4cの外形とほぼ同等またはそれより若干小さいのが好ましい。
また、膨潤率が前記上限値を超えると、必要以上に膨張し、シール部材8が外針ハブ3から露出してしまったり、流路32を塞いでしまう可能性がある。
まず、固定手段について説明する。
次に、係合手段について説明する。
第10図は、本発明の留置針組立体(第2実施形態)のシール手段付近の縦断面図である。
本実施形態は、シール手段の構成が異なること以外は前記第1実施形態と同様である。
なお、この弾性材料としては、特に限定されず、例えば、天然ゴム、イソプレンゴム、ブチルゴム、ブタジエンゴム、スチレン−ブタジエンゴム、ウレタンゴム、ニトリルゴム、アクリルゴム、フッ素ゴム、シリコーンゴムのような各種ゴム材料(特に加硫処理したもの)や、ウレタン系、ポリエステル系、ポリアミド系、オレフィン系、スチレン系等の各種熱可塑性エラストマー、あるいはそれらの混合物等の各種材料が挙げられ、これらの弾性材料の中でも、特に、イソプレンゴムを用いるのが好ましい。弾性材料にイソプレンゴムを用いた場合には、圧縮永久歪みが小さく、製品の使用期限が長くなるという利点がある。
Claims (6)
- 生体表面に穿刺して用いられる留置針組立体であって、
先端に鋭利な針先を有する内針と、
前記内針の基端部に固定された内針ハブと、
前記内針が挿通される中空の外針と、
前記外針の基端部に固定され、チューブが接続される接続部を有する外針ハブと、
前記外針ハブの内部空間に設けられ、前記内針を挿通可能な孔を有するシール部材を有するシール手段とを備え、
前記シール部材は、水膨潤性を有し、その膨潤率が2〜50倍である膨潤性材料で構成され、
前記シール手段は、前記外針ハブの内部空間に設けられ、前記内針を挿通可能な孔を有し、弾性材料で構成された第2のシール部材をさらに有し、
前記シール部材と前記第2のシール部材とは、前記内針の挿通方向に沿って隣接して配置され、
前記シール部材および前記第2のシール部材から前記内針を抜去した際に、該内針に付着した体液に前記シール部材が接触することにより、前記シール部材が膨潤し膨張して、該シール部材の孔が閉塞するとともに、前記第2のシール部材の自己閉塞性により該第2のシール部材の孔が閉塞することを特徴とする留置針組立体。 - 前記膨潤性材料は、無水マレイン酸系ポリマーおよびアクリル系ポリマーのうちの少なくとも1種を主として構成される請求項1に記載の留置針組立体。
- 前記シール部材は、その横断面形状が円形または楕円形をなすものである請求項1または2に記載の留置針組立体。
- 前記外針ハブには、前記膨張したシール部材の一部が入り込む緩衝部が設けられている請求項1または2に記載の留置針組立体。
- 前記緩衝部は、前記シール部材の基端側に位置している請求項4に記載の留置針組立体。
- 前記第2のシール部材は、少なくとも2つ設けられており、これらの前記第2のシール部材の間に前記シール部材が介挿されている請求項1ないし5のいずれかに記載の留置針組立体。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2008512040A JP4970430B2 (ja) | 2006-03-30 | 2007-03-22 | 留置針組立体 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2006095585 | 2006-03-30 | ||
JP2006095585 | 2006-03-30 | ||
PCT/JP2007/055892 WO2007122959A1 (ja) | 2006-03-30 | 2007-03-22 | 留置針組立体 |
JP2008512040A JP4970430B2 (ja) | 2006-03-30 | 2007-03-22 | 留置針組立体 |
Publications (2)
Publication Number | Publication Date |
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JPWO2007122959A1 JPWO2007122959A1 (ja) | 2009-09-03 |
JP4970430B2 true JP4970430B2 (ja) | 2012-07-04 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2008512040A Expired - Fee Related JP4970430B2 (ja) | 2006-03-30 | 2007-03-22 | 留置針組立体 |
Country Status (2)
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JP (1) | JP4970430B2 (ja) |
WO (1) | WO2007122959A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0947937A (ja) * | 1995-08-07 | 1997-02-18 | Sumitomo Metal Ind Ltd | 材料のモデル化、搬送シミュレーションおよび加工シミュレーション方法 |
US8109909B2 (en) | 2008-03-31 | 2012-02-07 | Terumo Kabushiki Kaisha | Medical instrument |
US9924898B2 (en) | 2008-04-15 | 2018-03-27 | Becton, Dickinson And Company | Flash activated passive shielding needle assembly |
WO2011118499A1 (ja) * | 2010-03-23 | 2011-09-29 | テルモ株式会社 | 生体管腔用補修材 |
JP6347912B2 (ja) * | 2012-11-30 | 2018-06-27 | ニプロ株式会社 | 留置針組立体 |
CN104826196B (zh) * | 2015-05-29 | 2018-05-01 | 邓杜娟 | 一种针座内液囊自封式静脉留置针 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5231591A (en) * | 1975-07-09 | 1977-03-10 | Cordis Corp | Hemostatic trocar |
JPH07245858A (ja) * | 1994-03-04 | 1995-09-19 | Aron Kasei Co Ltd | 管接合構造 |
JP2001299924A (ja) * | 2000-04-18 | 2001-10-30 | Unitika Ltd | 医療用多層チューブおよびその製造方法 |
JP2002085559A (ja) * | 2000-09-21 | 2002-03-26 | Terumo Corp | 穿刺具および留置針組立体 |
JP2006055674A (ja) * | 1996-10-25 | 2006-03-02 | Terumo Corp | 留置針組立体 |
-
2007
- 2007-03-22 WO PCT/JP2007/055892 patent/WO2007122959A1/ja active Application Filing
- 2007-03-22 JP JP2008512040A patent/JP4970430B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5231591A (en) * | 1975-07-09 | 1977-03-10 | Cordis Corp | Hemostatic trocar |
JPH07245858A (ja) * | 1994-03-04 | 1995-09-19 | Aron Kasei Co Ltd | 管接合構造 |
JP2006055674A (ja) * | 1996-10-25 | 2006-03-02 | Terumo Corp | 留置針組立体 |
JP2001299924A (ja) * | 2000-04-18 | 2001-10-30 | Unitika Ltd | 医療用多層チューブおよびその製造方法 |
JP2002085559A (ja) * | 2000-09-21 | 2002-03-26 | Terumo Corp | 穿刺具および留置針組立体 |
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JPWO2007122959A1 (ja) | 2009-09-03 |
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