Solvent or thermal extraction of ethylene oxide from polymeric materials: Medical device considerations.
J Biomed Mater Res B Appl Biomater
; 106(6): 2455-2463, 2018 08.
Article
in En
| MEDLINE
| ID: mdl-29226556
ABSTRACT
Ethylene oxide (EO) gas is commonly used to sterilize medical devices. Bioavailable residual EO, however, presents a significant toxicity risk to patients. Residual EO is assessed using international standards describing extraction conditions for different medical device applications. We examine a series of polymers and explore different extraction conditions to determine residual EO. Materials were sterilized with EO and exhaustively extracted in water, in one of three organic solvents, or in air using thermal desorption. The EO exhaustively extracted varies significantly and is dictated by two factors the EO that permeates the material during sterilization; and the effectiveness of the extraction protocol in flushing residual EO from the material. Extracted EO is maximized by a close matches between Hildebrand solubility parameters δpolymer , δEO , and δsolvent . There remain complexities to resolve, however, because maximized EO uptake and detection are accompanied by great variability. These observations may inform protocols for material selection, sterilization, and EO extraction. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B Appl Biomater, 106B 2455-2463, 2018.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Sterilization
/
Equipment and Supplies
/
Ethylene Oxide
Language:
En
Journal:
J Biomed Mater Res B Appl Biomater
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2018
Document type:
Article
Publication country:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA