PROCEDEU DE OBTINERE A PULBERILOR USCATE, DISPERSIBILE, DE MACROMOLECULE BIOLOGICE

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Publication info:

No.: RO118523

Date: 30.06.2003

Inventor(s):

PLATZ ROBERT M [US]

BREWER THOMAS K [US]

BOARDMAN TERENCE D [US]

Applicant(s):
INHALE THERAPEUTIC SYST [US]
Classification:
International patent classification (IPC):
A61K38/00; A61K38/28; A61K9/00; A61K9/12; A61K9/14; A61K9/16; A61K9/48; A61M15/00; A61K31/00

Cooperative patent classification (CPC):
A61K38/28 (EP, US); A61K9/0075 (EP, US); A61K9/145 (EP, US); A61K9/1617 (EP, US); A61K9/1623 (EP, US); A61K9/1652 (EP, US); A61K9/1658 (EP, US); A61K9/1694 (EP, US); A61M15/0086 (EP, US)
Application info:
No.: RO19980001547
Date: 07.05.1997
Priority number(s):
US19960644681 08.05.1996 ; WO1997US07779 07.05.1997
Related patents:
AP987; AU3119097; AU730059; BG102875; BG64113; BR9709057; CA2253393; CN1138531; CN1218394; CZ295644; CZ359998; EA000956; EA199800983; EE03591; EE9800376; EP0948317; GEP20012345; HK1020319; IL126754; IS4879; JP2000510471; JP2009191071; LT4553; LT98157; LV12231; NO985196; NZ332480; OA10914; PL190732; PL329870; SI9720031; SK152598; SK285400; TR199802247; TW550089; UA65538; US2002122827; US2003215514; US2007020199; US6051256; US6423344; US6592904; US7138141; US8173168; WO9741833; YU49206; YU50198
Description:

Inventia se refera la un procedeu de obtinere a pulberilor uscate, dispersibile, de macromolecule biologice, si prezinta aplicabilitate in domeniul farmaceutic. Procedeul de obtinere a pulberilor uscate, dispersabile, de macromolecule biologice, conform inventiei, cuprinde: asigurarea unui mediu lichid apos, evaporabil, continand o concentratie predeterminata de macromolecule si excipienti; atomizarea mediului lichid apos prin curgerea acestuia si a fluxului de gaz de atomizare printr-un racord de atomizare cu doua fluide, la un raport masic gaz: lichid mai mare de 5, pentru a forma picaturi cu o dimensiune medie de maximum 1 micrometri; uscarea picaturilor in conditii selectate pentru a forma particule dispersabile din materialul compozit continand macromolecule biologice, numitele particule avand un continut de umiditate sub un continut de umiditate predeterminat si o rugozitate masurata cu ajutorul permeabilitatii aerului de peste 2; colectarea particulelor la un randament ridicat.