JP7426430B2 - 用量設定機構及び注射装置 - Google Patents
用量設定機構及び注射装置 Download PDFInfo
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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)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Description
2 カートリッジホルダ
3 ハウジング
3a 窓
3b 長手方向スプライン
3d 内面
4 ペンニードル
5 ハブ
6 両頭針カニューレ
7 ニードルコネクタ
8 カートリッジ
8a セプタム
9 ピストン
10 注射装置
30 用量設定機構
31 用量ノブ
31a ノブスプライン
31c スナップフィット
33 スナップ要素
33a 外面
34 フローティングスプラインアセンブリ
35 用量セレクタ
35a 長手方向溝
35b 内面
38 用量スリーブ
42 ピストンロッド
42a 脚部
44 スプライン
45 突起部
45a 柔軟アーム
48 内部スプライン
48a スナップ要素
52 長手方向スプライン
54 固定用量セレクタスプライン
55 用量停止部
55a プライミング停止部
55b 注入バンプ
55c 最大用量ハードストップ
55d ゼロ用量ハードストップ
55e 傾斜面
56 周方向リブ
56a カットアウト
59 接続カットアウト
Claims (15)
- 用量ノブ(31)、
所定の固定用量設定の有限のセットを定める1又は複数の用量停止部(55)を有する用量セレクタ(35)、及び
スナップ要素(33)を有する、注射装置のための用量設定機構(30)であって、
所定の固定用量の1又は複数の設定は、前記スナップ要素(33)と前記用量セレクタ(35)との相互作用により達成され、
前記スナップ要素(33)が、用量送達中に前記用量セレクタ(35)に対して回転するように構成されており、
用量送達の最後に、前記スナップ要素(33)の更なる回転が前記スナップ要素(33)の突起部(46)を前記用量セレクタ(35)のゼロ用量ハードストップ(55d)に当接させ、これにより前記スナップ要素(33)の前記用量セレクタ(35)に対する更なる回転が防止される、用量設定機構(30)。 - 前記突起部(46)は、用量設定機構(30)が初期ゼロ設定用量位置にあるときにゼロ未満の用量の測量(ダイヤル回し)を防止するために前記ゼロ用量ハードストップ(55d)に当接するように構成されている、請求項1に記載の用量設定機構(30)。
- 前記ゼロ用量ハードストップ(55d)は前記用量セレクタ(35)の内面(35b)上に位置している、請求項1又は2に記載の用量設定機構(30)。
- 前記用量ノブ(31)は、前記突起部(46)が前記ゼロ用量ハードストップ(55d)に達するまで用量送達中に近位方向に押されるように構成されている、請求項1~3のいずれか一項に記載の用量設定機構(30)。
- 前記1又は複数の用量停止部(55)は前記用量セレクタ(35)の内面(35b)上に位置しており、
前記スナップ要素(33)の別な突起部(45)と前記用量停止部(55)の1つとの係合が送達用の薬剤の単一の固定用量を設定する、請求項1~4のいずれか一項に記載の用量設定機構(30)。 - 各々の用量停止部(55)と前記ゼロ用量ハードストップ(55d)との間の周方向間隔が、所定の固定用量の有限のセットの1つに正比例する、請求項5に記載の用量設定機構(30)。
- 前記用量セレクタ(35)を、用量停止部(55)の異なる配置を有する第2用量セレクタと交換することで、有限の所定の固定用量の異なるセットを有する用量設定機構(30)がもたらされるように、前記有限の所定の固定用量が前記用量停止部(55)の数及びこれら用量停止部(55)の間の相対的間隔のみによって定められる、請求項5又は6に記載の用量設定機構(30)。
- 前記スナップ要素(33)と前記用量セレクタ(35)の第1相対位置があり、また前記スナップ要素(33)と前記用量セレクタ(35)の第2相対位置があり、
前記別な突起部(45)は前記第1相対位置において前記用量停止部(55)と係合できるが、前記第2相対位置において前記用量停止部(55)と係合できず、
前記第1相対位置は用量設定中に実現され、前記第2相対位置は用量送達中に実現される、請求項5~7のいずれか一項に記載の用量設定機構(30)。 - 用量設定中の前記用量ノブ(31)の回転が、前記スナップ要素(33)の回転及び軸方向移動を生じさせ、また前記用量セレクタ(35)の軸方向移動のみを生じさせる、請求項1~8のいずれか一項に記載の用量設定機構(30)。
- 用量設定機構(30)は、前記用量セレクタ(35)とハウジング(3)の間の相対回転を防止するが、前記用量セレクタ(35)を前記ハウジング(3)に対して軸方向に移動させ得るように構成されている、請求項1~9のいずれか一項に記載の用量設定機構(30)。
- 用量設定機構(30)は、ユーザが最高の所定の固定用量設定を通過してダイヤルを回した場合に係合する最大用量ハードストップ(55c)を有する、請求項1~10のいずれか一項に記載の用量設定機構(30)。
- 前記最大用量ハードストップ(55c)は前記用量セレクタ(35)上に位置している、請求項11に記載の用量設定機構(30)。
- 前記突起部(46)は、ユーザが前記最高の所定の固定用量設定を超えてダイヤルを回した場合に前記最大用量ハードストップ(55c)と相互作用するように構成されている、請求項11又は12に記載の用量設定機構(30)。
- 前記突起部(46)の前記最大用量ハードストップ(55c)との係合は、前記スナップ要素(33)の更なる回転を防止し、
前記最大用量ハードストップ(55c)は、前記突起部(46)が用量設定機構(30)の1又は複数の構成部品を変形させず又は破損させずに前記最大用量ハードストップ(55c)を超えて回転できない形状で構成されている、請求項13に記載の用量設定機構(30)。 - 請求項1~14のいずれか一項に記載の用量設定機構(30)を有する注射装置。
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JP2023522394A (ja) | 2020-04-23 | 2023-05-30 | サノフイ | 薬物送達デバイスのための機構ユニットおよび薬物送達デバイス |
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