JP7843315B2 - グルコース及びエタノールのデュアル検出のための分析物センサ及び検知方法 - Google Patents
グルコース及びエタノールのデュアル検出のための分析物センサ及び検知方法Info
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Description
本開示は、概して、少なくとも2つの異なる分析物の検出のために複数の酵素を使用する分析物センサ及び方法、より具体的には、少なくともグルコース及びエタノールを検出するために複数の酵素を使用する分析物センサ及び方法を説明する。
実施形態A:分析物センサであって:少なくとも作用電極を含むセンサテール;作用電極の表面に配置されたグルコース応答性活性領域であって、グルコース応答性活性酵素を含むグルコース応答性活性領域;グルコース応答性活性領域から離隔した作用電極の表面に配置されたエタノール応答性活性領域の第1の部分であって、キサンチンオキシダーゼ、第1のポリマー、及び任意選択の電子移動剤を含むエタノール応答性活性領域の第1の部分;エタノール応答性活性領域の第1の部分上に配置された第1の膜であって、第1の膜ポリマーを含み、少なくともアセトアルデヒドに対して透過性である第1の膜;第1の膜上に配置されたエタノール応答性活性領域の第2の部分であって、グルコースオキシダーゼ、カタラーゼ、及び第2のポリマーを含むエタノール応答性活性領域の第2の部分;及びグルコース応答性活性領域及びエタノール応答性活性領域の第2の部分上に配置された第2の膜であって、第2の膜ポリマーを含み、少なくともグルコース及びエタノールに対して透過性である第2の膜を含む、分析物センサ。
要素1:センサテールは、組織への挿入のために構成されている。
要素3:第1の膜はポリビニルピリジンであり、第2の膜ポリマーはポリビニルピリジン-co-スチレンである。
要素6:エタノール応答性活性領域の第1の部分が電子移動剤を含み、電子移動剤が第1のポリマーに共有結合し、電子移動剤がオスミウム錯体を含む。
要素8:グルコース応答性酵素は、グルコースオキシダーゼ又はグルコースデヒドロゲナーゼである。
要素10:第3の膜は、ポリビニルピリジン、ポリビニルイミダゾン、又はそれらの任意のコポリマーのうちの1つである。
要素1及び2;1及び3;1及び4;1及び5;1及び6;1及び7;1及び8;1及び9;1及び10;2及び3;2及び4;2及び5;2及び6;2及び7;2及び8;2及び9;2及び10;3及び4;3及び5;3及び6;3及び7;3及び8;3及び9;3及び10;4及び5;4及び6;4及び7;4及び8;5及び6;5及び7;5及び8;6及び7;6及び8;7及び8;ならびに1、2、3、4、5、6、7、及び8のうちの1つ、複数、又はすべての非限定的な組み合わせ。
要素1及び2;1及び3;1及び4;1及び5;1及び6;1及び7;1及び8;2及び3;2及び4;2及び5;2及び6;2及び7;2及び8;3及び4;3及び5;3及び6;3及び7;3及び8;4及び5;4及び6;4及び7;4及び8;4及び9;4及び10;5及び6;5及び7;5及び8;5及び9;5及び10;6及び7;6及び8;6及び9;6及び10;7及び8;7及び9;7及び10;8及び9;8及び10;9及び10;及び1、2、3、4、5、6、7、8、9、及び10のうちの1つ、複数、又はすべての非限定的な組み合わせ。
イグニッションロックなどの車両フェイルセーフは、障害がある場合や車両を安全に操作できる状態にない場合に、操作者が車両を操作できないようにするために使用されることがある。障害のある状態で車両を操作すると、操作者や一般の人々に重大な危険をもたらす可能性がある。一般的なタイプのイグニッションロックの1つは、飲酒運転を防止するように設計されており、より具体的には、アルコールの使用によって酔っている間に個人が車両を操作するのを防止するように設計されている。このようなロック装置は、呼気アルコール分析装置又は光学センサを車両のイグニッションシステムに接続しており、ドライバーは車両を始動する前に血中アルコール濃度テストに合格する必要がある。
F.操作者の体内に存在する1つ以上の分析物を検出及びモニタリングするセンサを有するセンサ制御デバイスと、センサ制御デバイス及び車両の電気システムと通信する制御モジュールとを含む分析物モニタリング及び車両制御システムであって、制御モジュールは、センサ制御デバイスによって提供されるデータを受信及び処理するようにプログラムされたコンピュータシステムを含み、操作者のリアルタイム測定された分析物レベルが所定の安全閾値を超えると、車両の操作がコンピュータシステムによって制御又は無効化される、分析物モニタリング及び車両制御システム。
Claims (20)
- グルコース及びエタノールを生体内で検出するための分析物センサであって:
a)第1の作用電極;
b)第2の作用電極;
c)グルコース濃度に比例する第1のシグナルを前記第1の作用電極で生成可能なグルコース応答性活性領域であって、前記グルコース応答性活性領域は前記第1の作用電極の表面上に配置されており、グルコース応答性酵素を含む前記グルコース応答性活性領域;
d)アセトアルデヒドと反応することでエタノール濃度に比例する第2のシグナルを前記第2の作用電極で生成可能なアセトアルデヒド応答性活性領域であって、前記アセトアルデヒド応答性活性領域は前記第2の作用電極の表面上に直接配置されており、キサンチンオキシダーゼを含む前記アセトアルデヒド応答性活性領域;
e)前記アセトアルデヒド応答性活性領域上に配置された、アセトアルデヒドに対して透過性である第1の膜;
f)エタノールにさらされるとアセトアルデヒドを形成可能なエタノール応答性活性領域であって、前記エタノール応答性活性領域は前記第1の膜の上に直接配置されており、グルコースオキシダーゼ及びカタラーゼを含む前記エタノール応答性活性領域;及び
g)前記グルコース応答性活性領域及び前記エタノール応答性活性領域の上に配置された、グルコース及びエタノールに対して透過性である第2の膜
を含み、ユーザの皮膚内に部分的に挿入されるように構成された、分析物センサ。 - 前記第1の膜は、ポリビニルピリジン、ポリビニルイミダゾール、又はそれらの任意のコポリマーを含み、前記第2の膜は、ポリビニルピリジン、ポリビニルイミダゾール、又はそれらの任意のコポリマーを含む、請求項1に記載の分析物センサ。
- 前記第1の膜はポリビニルピリジンを含む、請求項1又は2に記載の分析物センサ。
- 前記第2の膜は、ポリビニルピリジン-co-スチレンを含む、請求項1~3のいずれか一項に記載の分析物センサ。
- 前記アセトアルデヒド応答性活性領域は、第1のポリマーをさらに含む、請求項1~4のいずれか一項に記載の分析物センサ。
- 前記キサンチンオキシダーゼは、前記アセトアルデヒド応答性活性領域の前記第1のポリマーに共有結合されている、請求項5に記載の分析物センサ。
- 前記エタノール応答性活性領域は、第2のポリマーをさらに含む、請求項5または6に記載の分析物センサ。
- 前記グルコースオキシダーゼは、前記エタノール応答性活性領域の前記第2のポリマーに共有結合されている、請求項7に記載の分析物センサ。
- 前記アセトアルデヒド応答性活性領域は、電子移動剤をさらに含む、請求項5~8のいずれか一項に記載の分析物センサ。
- 前記電子移動剤は前記第1のポリマーに共有結合されている、請求項9に記載の分析物センサ。
- 前記電子移動剤はオスミウム錯体を含む、請求項9又は10に記載の分析物センサ。
- 前記アセトアルデヒド応答性活性領域は、カタラーゼをさらに含む、請求項1~11のいずれか一項に記載の分析物センサ。
- 前記グルコース応答性酵素はグルコースオキシダーゼ又はグルコースデヒドロゲナーゼである、請求項1~12のいずれか一項に記載の分析物センサ。
- 前記グルコース応答性活性領域は第3のポリマーをさらに含む、請求項1~13のいずれか一項に記載の分析物センサ。
- 前記グルコース応答性活性領域は第2の電子移動剤をさらに含む、請求項14に記載の分析物センサ。
- 前記第2の電子移動剤は前記第3のポリマーに共有結合されている、請求項15に記載の分析物センサ。
- 前記第2の電子移動剤はオスミウム錯体を含む、請求項15又は16に記載の分析物センサ。
- 前記キサンチンオキシダーゼは、前記第1のポリマーに対して約1重量%~約50重量%の範囲の量で存在する、請求項5又は6に記載の分析物センサ。
- 請求項1~18のいずれか一項に記載の分析物センサの動作を制御する方法であって、前記分析物センサは既に使用者の皮膚内に導入されており、前記方法は、
前記第1の作用電極に第1の電位を適用することで、前記グルコース応答性活性領域が接触している体液中のグルコースの濃度に比例する、前記グルコース応答性活性領域の酸化還元電位以上である前記第1のシグナルを生成すること、
前記第2の作用電極に第2の電位を適用することで、前記エタノール応答性活性領域が接触している体液中のエタノールの濃度に比例する、前記アセトアルデヒド応答性活性領域及び前記エタノール応答性活性領域の酸化還元電位以上である前記第2のシグナルを生成すること、及び
前記第1のシグナルを前記体液中のグルコースの濃度に相関させ、かつ前記第2のシグナルを前記体液中のエタノールの濃度に相関させること
を含む、方法。 - 前記体液は間質液である、請求項19に記載の方法。
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