JP2012139407A - 穿刺体 - Google Patents
穿刺体 Download PDFInfo
- Publication number
- JP2012139407A JP2012139407A JP2010294452A JP2010294452A JP2012139407A JP 2012139407 A JP2012139407 A JP 2012139407A JP 2010294452 A JP2010294452 A JP 2010294452A JP 2010294452 A JP2010294452 A JP 2010294452A JP 2012139407 A JP2012139407 A JP 2012139407A
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- Prior art keywords
- puncture
- puncture body
- present
- needle
- tubular hollow
- 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.)
- Pending
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Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
【解決手段】一方の端部(先端部1)が鋭角的に尖らされており、かつ他方の端部(基端部2)が平滑な面7を有する本体部3と、管状中空体6の端部が当接する平滑な当り面9を備えた連結部10と、を有する。また、当該連結部10は、本体部3の基端側の平滑な面7に楕円柱状の突起4が突設され、当該突起4を設けられたことにより形成される段部8に当該楕円柱状の突起4の軸断面積より大きな断面積を有する管状中空体6の端部が当接する平滑な当り面9を備えられている。
【選択図】図1
Description
さらに、本発明に係る穿刺体の構造の他の実施形態の一例を示す。図4は、本発明の穿刺体および管状中空体の斜視図であり、当該穿刺体および管状中空体の軸直角断面は、扁平な楕円状である。本発明の穿刺体の構造は、一方の端部(先端部1)が鋭角的に尖らされており、かつ他方の端部(基端部2)の面が平滑な面7を有する本体部3と、当該平滑な面に楕円柱状の突起4が突設され、さらに当該楕円柱状の突起4の側面に円柱状の小さな突起31を設けており、当該円柱状の小さな突起31と嵌合するように曲線状の切欠部32を有する管状中空体の端部が当接する連結部10とを有する。
なお、当該薬剤の量としては、本発明に係る穿刺体の全質量のうち、0.1〜99質量%が好ましく、1〜70質量%がより好ましい。
(コアセルベート相の形成工程)
原材料は、ポリカチオン性高分子(例えば、ウシ・ブタなどの皮膚から抽出したコラーゲンをペプシンなどの酵素で処理して抗原性のあるテロペプチドを消化除去したアテロコラーゲン)、および、ポリアニオン性高分子(例えば、酸性ムコ多糖類(コンドロイチン4−硫酸、コンドロイチン6−硫酸、デルマタン硫酸、ケラタン硫酸、ヘパラン硫酸、ヘパリン、アルギン酸など))である。なお、中性ムコ多糖類であるヒアルロン酸では液滴は形成されない。
上記手法で得られたコアセルベート相を遠心分離や沈降などの方法でコアセルベート相の集合体である生分解性ポリマー超濃厚ゾル状物質を得る。例えば、ポリカチオン性高分子、ポリアニオン性高分子の原料を熱変性アテロコラーゲン(HAC)と、コンドロイチン6−硫酸とした場合、得られたゾル状物質は単なる高濃度のコラーゲン溶液と異なり、変性してランダムコイル化したHAC分子と鎖構造の多糖分子が絡み合った構造をしていると推測されることから分子構造的に強固であると考えられる。また、高濃度のコラーゲン溶液は流動性に乏しいため上述のようなフィルター通過は困難であるが液滴の場合は出発溶液の濃度が低濃度であるためフィルター通過ができ除菌も可能である。
本発明に係る穿刺体は、成人で25〜19G、小児で25〜28Gでの使用が好ましい。また、当該穿刺体をシリンジと連結した管状中空体に固定する方法としては、陰圧による固定、生分解性ポリマーによる溶着、または穿刺体または管状中空体の表面に返し機構が設けられたものなどが挙げられる。
原材料は、ウシ・ブタなどの皮膚から抽出したコラーゲンをペプシンなどの酵素で処理して抗原性のあるテロペプチドを消化除去したアテロコラーゲン((株)高研、登録商標)、および、酸性ムコ多糖類(コンドロイチン4−硫酸、コンドロイチン6−硫酸、デルマタン硫酸、ケラタン硫酸、ヘパラン硫酸、ヘパリンなど。)である。なお、中性ムコ多糖類であるヒアルロン酸では液滴は形成されないことは確認した。
上記手法で得られたコアセルベートを遠心分離((株)トミー精工社製 RL−100)を用いて、800回転で5分間遠心分離しコアセルベート集合体として、超濃厚ゾル状物質が得られた。
Claims (9)
- 先端が鋭角的に尖らされた本体部の後端に、中空管体と連結される連結部が設けられ、穿刺後に体内に留置される生分解性の穿刺体。
- 前記本体部は、軸直角断面の最大長さを直径とする円の面積より小さな面積としたことを特徴とする、請求項1に記載の穿刺体。
- 前記本体部は、軸直角断面が多角形状又は楕円状としたことを特徴とする、請求項1または2に記載の穿刺体。
- 前記軸直角断面が多角形状をした本体部は、角部が鋭利な刃部としたことを特徴とする、請求項1〜3のいずれか1項に記載の穿刺体。
- 前記軸直角断面が楕円状をした本体部は、長手方向の側端部に刃部を設けたことを特徴とする、請求項1〜4のいずれか1項に記載の穿刺体。
- 該穿刺体の外周面に返し部が設けられていることを特徴とする、請求項1〜5のいずれか1項に記載の穿刺体。
- 請求項1〜6に記載の穿刺体は、生分解性ポリマーを含むコアセルベート相を凝集させて固化した材料で構成されていることを特徴とする、請求項1〜6のいずれか1項に記載の穿刺体。
- 前記コアセルベート相は、薬剤を含有する、請求項7に記載の穿刺体。
- 前記中空管体と、該中空管体の先端開口を閉塞するように脱着自在に取り付けられた前記穿刺体とを有し、穿刺後の引き抜き時に前記穿刺体が体内に留置されるようにしたことを特徴とする、請求項1〜8のいずれか1項に記載の注射針。
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016059508A (ja) * | 2014-09-16 | 2016-04-25 | テルモ株式会社 | カテーテル |
| KR101680820B1 (ko) * | 2014-11-07 | 2016-11-29 | 김근식 | 치료용 니들 부재, 이를 구비하는 주사용 기구 및 이를 이용한 치료 방법 |
| JP2017148464A (ja) * | 2016-02-23 | 2017-08-31 | 三島金型株式会社 | 流体注出注入器 |
| JP2018078978A (ja) * | 2016-11-15 | 2018-05-24 | 群馬県 | 合成樹脂製注射針 |
| JP2019527581A (ja) * | 2016-08-01 | 2019-10-03 | プサン ナショナル ユニバーシティ インダストリー−ユニバーシティ コーポレーション ファウンデーション | マイクロニードルパッチ及びその製造方法 |
| CN111514407A (zh) * | 2020-05-14 | 2020-08-11 | 南京市江宁医院 | 一种降低职业暴露风险的注射输液针头 |
| JP2022075592A (ja) * | 2020-11-06 | 2022-05-18 | 学校法人 関西大学 | 医療用針の製造方法、及び、医療用針 |
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| KR101680820B1 (ko) * | 2014-11-07 | 2016-11-29 | 김근식 | 치료용 니들 부재, 이를 구비하는 주사용 기구 및 이를 이용한 치료 방법 |
| JP2017148464A (ja) * | 2016-02-23 | 2017-08-31 | 三島金型株式会社 | 流体注出注入器 |
| JP2019527581A (ja) * | 2016-08-01 | 2019-10-03 | プサン ナショナル ユニバーシティ インダストリー−ユニバーシティ コーポレーション ファウンデーション | マイクロニードルパッチ及びその製造方法 |
| JP2018078978A (ja) * | 2016-11-15 | 2018-05-24 | 群馬県 | 合成樹脂製注射針 |
| CN111514407A (zh) * | 2020-05-14 | 2020-08-11 | 南京市江宁医院 | 一种降低职业暴露风险的注射输液针头 |
| JP2022075592A (ja) * | 2020-11-06 | 2022-05-18 | 学校法人 関西大学 | 医療用針の製造方法、及び、医療用針 |
| JP7751285B2 (ja) | 2020-11-06 | 2025-10-08 | 学校法人 関西大学 | 医療用針の製造方法 |
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