JP2014529481A - 直交冗長センサシステム及び方法 - Google Patents
直交冗長センサシステム及び方法 Download PDFInfo
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Abstract
Description
本願は、2011年9月6日出願の米国仮出願第61/531449号、2011年9月6日出願の米国仮出願第61/531451号、2011年9月6日出願の米国仮出願第61/531456号、2011年11月1日出願の米国仮出願第61/554057号、2011年11月17日出願の米国仮出願第61/561146号、2012年1月18日出願の米国仮出願第61/587819号、及び2012年4月5日出願の米国仮出願第61/620563号の優先権を主張し、また、本願と同時出願の“Optical Sensor System and Methods”との名称の米国特許出願(整理番号第040088−0405702号)に関し、これら全てはそれら全体が参照として本願に組み込まれる。
閉ループシステムにおいて実施され得る。
j=−D(dC)/(dX) 式(1)
ここで、jはグルコースの流束、Dは拡散定数、C=[Glu]、Xは距離である。生物付着がセンサ膜の厚さを変化させて(dX)、グルコース流束及び測定されるセンサ応答を低下させる。従って、センサの再較正が必要とされる。
K=([MBL−Dex][Glu])/([MBL−Glu][Dex]) 式(2)
S1を、センシング構成要素(例えば、光学センサ)用の全ての評価点の組とし、
S2を、センシング構成要素(例えば、非光学センサ)用の全ての評価点の組とし、
S1及びS2が独立した正規分布の変数であるとする(センサの直交性に起因する)。
P(a又はb)=P(a)+P(b)―P(a)×P(b) 式(3)
ここで、
a、bは、S1、S2の点が正確であるかどうかを表し(ISO 15197:2003によって定義される);
P(a)、P(b)は、そうした点が正確であるとされる確率を表す。
本発明の直交冗長システムは、ドリフト検出の信頼性を増大させる。
100 光学センサ
200 電気化学的センサ
300 モニタ
400 注入ポンプ
Claims (41)
- 使用者の体外に配置される近位部及び使用者の体内に配置される遠位部を有し、且つ、グルコース受容体、グルコース類似体、及び第一蛍光体を有するアッセイを含む光学グルコースセンサ、及び、
使用者の体外に配置される近位部及び使用者の体内に配置される遠位部を有する非光学グルコースセンサを備えた直交冗長グルコースセンサと、
ディスプレイを有する携帯型モニタと、
前記光学グルコースセンサの近位部及び前記非光学グルコースセンサの近位部を収容する筐体を有し、且つ、前記光学センサからの光学信号及び前記非光学センサからの非光学信号を受信して、前記光学信号及び前記非光学信号のそれぞれを各グルコース値に変換するための機器を前記筐体内に含み、且つ、前記各グルコース値を無線送信する外部トランスミッタとを備えた連続的グルコース監視システム。 - 前記非光学グルコースセンサが電気化学的グルコースセンサである、請求項1に記載のシステム。
- 前記電気化学的グルコースセンサが複数の電極を含む、請求項2に記載のシステム。
- 前記複数の電極の各々が、前記使用者の体外に配置される近位部と、前記使用者の体内に配置される遠位部とを含む、請求項3に記載のシステム。
- 前記複数の電極の各々の遠位部が、前記使用者の体内に皮下挿入される、請求項4に記載のシステム。
- 前記複数の電極が前記電気化学的グルコースセンサの長さ方向に沿って分散している、請求項4に記載のシステム。
- 前記複数の電極が作用電極である、請求項6に記載のシステム。
- 前記光学グルコースセンサが、前記使用者の体外に配置される近位部及び前記使用者の体内に配置される遠位部を有する光ファイバを含む、請求項1に記載のシステム。
- グルコース浸透性膜を更に含み、前記膜が、閉端部、中空内部、及び前記光ファイバの遠位部に結合された開端部を有する、請求項8に記載にシステム。
- 前記アッセイが、前記光ファイバの遠位部と前記膜の閉端部との間において前記膜の中空内部に画定されたアッセイコンパートメント内に収容されている、請求項9に記載のシステム。
- 前記アッセイコンパートメントが、前記使用者の組織内に配置される、請求項10に記載のシステム。
- 前記膜が生分解性である、請求項9に記載のシステム。
- 前記光ファイバの近位部がアッセイ調査システムに光学的に結合される、請求項8に記載のシステム。
- 前記アッセイ調査システムがオプトエレクトロニクス調査システムである、請求項13に記載のシステム。
- 前記調査システムが照明源を含み、前記照明源が赤色レーザダイオードである、請求項14に記載のシステム。
- 前記第一蛍光体が、Alexa Fluor647(AF647)、Alexa Fluor750(AF750)、及びQSY21のうちの一つである、請求項15に記載のシステム。
- 前記調査システムが積層平坦集積光学システム(SPIOS)である、請求項14に記載のシステム。
- 前記調査システムが前記トランスミッタ内部に収容される、請求項13に記載のシステム。
- 前記光ファイバが、略200μmから略500μmの間の直径の円形断面を有する、請求項8に記載のシステム。
- 前記光ファイバが、200μm未満の直径の円形断面を有する、請求項8に記載のシステム。
- 前記アッセイが、前記第一蛍光体とは異なる参照蛍光体を更に含む、請求項1に記載のシステム。
- 前記参照蛍光体がAlexa Fluor700(AF700)である、請求項21に記載のシステム。
- 前記参照蛍光体がヒト血清アルブミン(HSA)上に標識される、請求項21に記載のシステム。
- 前記グルコース受容体が前記第一蛍光体で標識され、前記グルコース類似体が色素で標識され、前記第一蛍光体及び前記色素がフェルスター共鳴エネルギー移動ペアを形成する、請求項1に記載のシステム。
- 前記グルコース受容体がマンナン結合レクチン(MBL)であり、前記グルコース類似体がデキストランである、請求項24に記載のシステム。
- 前記第一蛍光体がAlexa Fluor594(AF594)であり、前記色素がヘキサメトキシクリスタルバイオレット‐1(HMCV1)である、請求項25に記載のシステム。
- 前記第一蛍光体及び前記色素の各々が水溶性である、請求項24に記載のシステム。
- 前記光学センサ及び前記非光学センサの各遠位部が使用者の体内に共に配置される、請求項1に記載のシステム。
- 前記外部トランスミッタが、前記使用者の体の上に装着される、請求項1に記載のシステム。
- 前記外部トランスミッタが、15cm3以下の体積及び略10gの重さを有するサイズにされている、請求項29に記載のシステム。
- 前記外部トランスミッタの体積が略11cm3である、請求項30に記載のシステム。
- 前記非光学グルコースセンサが複数の電極を含み、各電極が、前記使用者の体外に配置される近位部及び前記使用者の体内に配置される遠位部を有し、前記光学グルコースセンサが、前記使用者の体外に配置される近位部及び前記使用者の体内に配置される遠位部を有する光ファイバを含む、請求項1に記載のシステム。
- 前記複数の電極の各々の遠位部及び前記光ファイバの遠位部が使用者の体内に共に配置される、請求項32に記載のシステム。
- 前記光学グルコースセンサが少なくとも一つの故障モードを有し、前記非光学グルコースセンサが少なくとも一つの故障モードを有し、前記光学グルコースセンサの少なくとも一つの故障モードが、前記非光学センサの少なくとも一つの故障モードと異なる、請求項1に記載のシステム。
- 前記システムの平均絶対相対偏差(MARD)が略13%である、請求項1に記載のシステム。
- 前記システムが、少なくとも95%の感度及び特異度と、10%未満の誤った警告発生率とを有する、請求項35に記載のシステム。
- 前記携帯型モニタが集積血中グルコース測定器を含む、請求項1に記載のシステム。
- 前記トランスミッタが、前記グルコース値を前記携帯型モニタに無線送信する、請求項1に記載のシステム。
- インスリンポンプを更に含む請求項1に記載のシステム。
- 前記トランスミッタが前記各グルコース値を前記インスリンポンプに無線送信する、請求項39に記載のシステム。
- 前記グルコース監視システムが閉ループシステムである、請求項40に記載のシステム。
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WO2013036493A1 (en) | 2013-03-14 |
JP5851614B2 (ja) | 2016-02-03 |
CA3067983A1 (en) | 2013-03-14 |
JP2016033519A (ja) | 2016-03-10 |
JP5788099B2 (ja) | 2015-09-30 |
JP6196279B2 (ja) | 2017-09-13 |
CN103917154A (zh) | 2014-07-09 |
CN103917858B (zh) | 2016-05-04 |
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WO2013036492A1 (en) | 2013-03-14 |
US11229384B2 (en) | 2022-01-25 |
CA2845804A1 (en) | 2013-03-14 |
CN103917858A (zh) | 2014-07-09 |
CA2845636A1 (en) | 2013-03-14 |
CN103917154B (zh) | 2016-01-27 |
US9642568B2 (en) | 2017-05-09 |
US11931145B2 (en) | 2024-03-19 |
EP2753232B1 (en) | 2017-12-06 |
CA2845636C (en) | 2020-03-10 |
CA3067983C (en) | 2022-08-02 |
US20130060105A1 (en) | 2013-03-07 |
US20220087578A1 (en) | 2022-03-24 |
EP2753918A1 (en) | 2014-07-16 |
JP2014528788A (ja) | 2014-10-30 |
US20170215775A1 (en) | 2017-08-03 |
US20130060106A1 (en) | 2013-03-07 |
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CA2845804C (en) | 2019-05-14 |
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US20190117137A1 (en) | 2019-04-25 |
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