JP4179881B2 - 凍結乾燥ケークの抵抗を測定するためのシステム及び方法 - Google Patents
凍結乾燥ケークの抵抗を測定するためのシステム及び方法 Download PDFInfo
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- JP4179881B2 JP4179881B2 JP2002575563A JP2002575563A JP4179881B2 JP 4179881 B2 JP4179881 B2 JP 4179881B2 JP 2002575563 A JP2002575563 A JP 2002575563A JP 2002575563 A JP2002575563 A JP 2002575563A JP 4179881 B2 JP4179881 B2 JP 4179881B2
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- Prior art keywords
- gas
- pressure
- cake resistance
- product
- lyophilization
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Description
プラグ長さ: 0.77cm
使用ガス: 窒素(N2)
抵抗: 20.3mmHg/(ml/min)/cm3
プラグ長さ: 0.69cm
使用ガス: 窒素(N2)
抵抗: 7.7mmHg/(ml/min)/cm3
プラグ長さ: 1.08cm
使用ガス: 窒素(N2)
抵抗: 1.8mmHg/(ml/min)/cm3
Claims (19)
- 凍結乾燥の間に、又は凍結乾燥の後に、生成物のケーク抵抗を測定する方法であって、
凍結乾燥製造工程における多数の生成物のうちの1つの試料にガスを導入するステップであって、所定の容積の試料プラグに所定の流速にてガスを導入する、ステップ、及び
前記生成物の試料プラグからのガスの流れ又はガスの圧力の一方における変化を測定し、ケーク抵抗を導くステップ、
を含む方法。 - 一定の流れのガスを前記試料に供給し、圧力の変化を検知する請求項1に記載の方法。
- 前記ケーク抵抗の測定値に応答して、ケーク抵抗を低減するよう、生成物を後に処理する際に、前記生成物を再調合するステップをさらに含む請求項1に記載の方法。
- 前記ケーク抵抗の測定値に応答して、後の処理の間に温度及び/又は圧力を変更するステップをさらに含む請求項1に記載の方法。
- 前記ケーク抵抗の測定値に応答して、処理の間に温度及び/又は圧力を変更するステップをさらに含む請求項1に記載の方法。
- 前記変更するステップが、前記ケーク抵抗が所望よりも高い場合に、前記温度及び/圧力を変更することを含む請求項5に記載の方法。
- 一定圧のガスが前記試料に供給され、かつ流れの変化が検知される請求項1に記載の方法。
- 凍結乾燥の間に、又は凍結乾燥の後にケーク抵抗を測定するための装置であって、
ガス源、
試料の上流側におけるガスの圧力又は流れのいずれか一方が一定となるようにガスの流れを制御する装置、
生成物の多数の生成物試料の1つからの試料を調べるための管、
前記試料に供給される前記ガスの圧力又は流れの他方における変化を測定するためのセンサー、
を含む装置。 - 前記制御装置が、前記ガス源から一定の源流を供給するための流量計を備え、かつ前記センサーが、前記試料のガス由来のガス圧を測定するためのセンサーを含む請求項8に記載の装置。
- 前記ガス源、流量計及び管と流体的に連結されている導管をさらに含む請求項9に記載の装置。
- 真空チャンバー、前記生成物を保持するバイアル及び前記バイアルを保持する棚をさらに含む請求項8に記載の装置。
- 前記真空チャンバー内の圧力及び/又は温度を制御するための制御システムをさらに含む請求項11に記載の装置。
- 前記センサーが、検知された圧力に応答して前記圧力及び/又は温度を変更するように、前記制御システム対して関連して動作するように接続されている請求項12に記載の装置。
- 凍結乾燥を受けている一連の生産工程において多数の生成物のうちの1つのケーク抵抗を測定し、前記凍結乾燥処理のパラメーターを変更し、前記一連の生産工程の間に前記凍結乾燥処理を変更する方法。
- 前記凍結乾燥がチャンバー内で行われ、前記変更するステップが、前記ケーク抵抗が所望よりも高い場合には、前記一連の生産工程において、チャンバー内の温度を下げるステップを含む請求項14に記載の方法。
- 前記凍結乾燥がチャンバー内で行われ、前記変更するステップが、前記ケーク抵抗が所望よりも高い場合には、前記一連の生産工程において、チャンバー内の圧力を下げるステップを含む請求項14に記載の方法。
- 凍結乾燥した生成物のケーク抵抗を測定する方法であって、
複数の異なる凍結乾燥した生成物内へ、前記生成物のそれぞれに対して異なる深さで管を挿入するステップ、
前記管のそれぞれに、ガスの流れ又は圧力のいずれか一方を制御して導入するステップ、
前記導入されたガスの流れ又は圧力の他方の変化を測定するステップ、
前記生成物内の様々な位置において複数の前記管を使用して、前記生成物内の異なる位置でのケーク抵抗を監視するステップ、
を含む方法。 - 前記ケーク抵抗の測定が処理の間に1回又はより多く行われる請求項17に記載の方法。
- 前記ケーク抵抗の測定値が、前記生成物が完全に凍結乾燥された後に得られる請求項17に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25167200P | 2000-12-06 | 2000-12-06 | |
PCT/US2001/047034 WO2002077555A1 (en) | 2000-12-06 | 2001-12-04 | System and method for measuring freeze dried cake resistance |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004525333A JP2004525333A (ja) | 2004-08-19 |
JP4179881B2 true JP4179881B2 (ja) | 2008-11-12 |
Family
ID=22952930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002575563A Expired - Fee Related JP4179881B2 (ja) | 2000-12-06 | 2001-12-04 | 凍結乾燥ケークの抵抗を測定するためのシステム及び方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6643950B2 (ja) |
JP (1) | JP4179881B2 (ja) |
WO (1) | WO2002077555A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19936281C2 (de) * | 1999-08-02 | 2002-04-04 | Bayer Ag | Verfahren zur Gefriertrocknung |
CA2400371C (en) | 2000-02-18 | 2009-12-08 | Eisai Co. Ltd. | Methods to prepare micelles comprising amphiphilic lipopolysaccharide compounds |
SE0001453D0 (sv) * | 2000-04-19 | 2000-04-19 | Astrazeneca Ab | Method of monitoring a freeze drying process |
US6971187B1 (en) * | 2002-07-18 | 2005-12-06 | University Of Connecticut | Automated process control using manometric temperature measurement |
DE102004007526A1 (de) * | 2004-02-17 | 2005-09-01 | Oetjen, Georg-Wilhelm, Dr. | Verfahren und Einrichtung zur Gefriertrocknung von Produkten |
US20090175315A1 (en) * | 2005-04-26 | 2009-07-09 | John Jeffrey Schwegman | Wireless temperature sensing system for lyophilization processes |
US7520670B2 (en) * | 2005-04-26 | 2009-04-21 | John Jeffrey Schwegman | Wireless temperature sensing system for lyophilization processes |
US20090149647A1 (en) * | 2005-08-31 | 2009-06-11 | Eisai R&D Management Co., Ltd. | Process for production of lipid a analogue |
MX2009003389A (es) * | 2006-10-03 | 2009-04-09 | Wyeth Corp | Metodos y aparatos de liofilizacion. |
IT1397930B1 (it) | 2009-12-23 | 2013-02-04 | Telstar Technologies S L | Metodo per monitorare l'essiccamento primario di un processo di liofilizzazione. |
US8434240B2 (en) | 2011-01-31 | 2013-05-07 | Millrock Technology, Inc. | Freeze drying method |
US9121637B2 (en) * | 2013-06-25 | 2015-09-01 | Millrock Technology Inc. | Using surface heat flux measurement to monitor and control a freeze drying process |
US10605527B2 (en) | 2015-09-22 | 2020-03-31 | Millrock Technology, Inc. | Apparatus and method for developing freeze drying protocols using small batches of product |
US11287185B1 (en) | 2020-09-09 | 2022-03-29 | Stay Fresh Technology, LLC | Freeze drying with constant-pressure and constant-temperature phases |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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FR1286002A (fr) * | 1961-01-17 | 1962-03-02 | Usifroid | Procédé pour la régulation des opérations de congélation-dessication et installation pour sa mise en oeuvre |
US3271874A (en) | 1965-01-28 | 1966-09-13 | Oppenheimer Suzanne Bohnen | Infra-red sublimation method and apparatus for freeze drying techniques |
GB1587409A (en) | 1976-10-04 | 1981-04-01 | Boc Ltd | Freeze drying |
DE3311525A1 (de) * | 1983-03-30 | 1984-10-04 | Arzneimittel Gmbh Apotheker Vetter & Co Ravensburg, 7980 Ravensburg | Verfahren und vorrichtung zum gefriertrocknen eines produktes in einem gefaess mit enger oeffnung |
US4521628A (en) * | 1983-07-11 | 1985-06-04 | E. I. Du Pont De Nemours And Company | Recovery of arylboranes |
US4514603A (en) * | 1984-02-21 | 1985-04-30 | E.M.B. Corporation | Door operated switch assembly |
US5421686A (en) | 1993-03-29 | 1995-06-06 | Hull Corporation | Loading and unloading system |
DE4339589C1 (de) * | 1993-11-20 | 1994-12-08 | Sartorius Gmbh | Verfahren und Einrichtung zum Prüfen von Filterelementen durch einen Wasserintrusionstest |
DE69521110T2 (de) * | 1994-12-22 | 2002-03-07 | Holland Sweetener Co | Crystallisierung vom Alpha-L-Aspartyl-L-phenylalanylmethylester aus wässrigen Lösungen |
US6122836A (en) * | 1998-05-07 | 2000-09-26 | S.P. Industries, Inc., The Virtis Division | Freeze drying apparatus and method employing vapor flow monitoring and/or vacuum pressure control |
-
2001
- 2001-12-04 WO PCT/US2001/047034 patent/WO2002077555A1/en active Application Filing
- 2001-12-04 JP JP2002575563A patent/JP4179881B2/ja not_active Expired - Fee Related
- 2001-12-04 US US10/006,015 patent/US6643950B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20020121099A1 (en) | 2002-09-05 |
US6643950B2 (en) | 2003-11-11 |
WO2002077555A1 (en) | 2002-10-03 |
JP2004525333A (ja) | 2004-08-19 |
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