Currently practised sterilization methods--some inadvertent consequences

Area of Science:

• Materials Science
• Biocompatibility Studies
• Sterilization Technologies

Background:

• Established sterilization methods (ethylene oxide, gamma irradiation, steam) may negatively impact polymeric medical materials.
• Adverse effects on material properties can compromise device safety and efficacy.
• Biocompatibility is a critical factor for medical implants and devices.

Purpose of the Study:

• To review the potential adverse consequences of common sterilization techniques on polymeric materials.
• To discuss the impact of these sterilization methods on material biocompatibility.
• To specifically examine the effects of steam sterilization on polyethylene terephthalate (PET).

Main Methods:

• Literature review of sterilization effects on polymers.
• Analysis of changes in material properties post-sterilization.
• Case study on steam sterilization of polyethylene terephthalate.

Main Results:

• Ethylene oxide, gamma irradiation, and steam sterilization can alter polymer structure and chemistry.
• These alterations can lead to reduced mechanical strength, degradation, and leaching of harmful substances.
• Steam sterilization significantly affects the physical and chemical properties of polyethylene terephthalate, impacting its biocompatibility.

Conclusions:

• Sterilization processes require careful consideration to maintain polymer integrity and biocompatibility.
• Material selection and sterilization method must be optimized to prevent adverse effects.
• Further research is needed to develop sterilization techniques that ensure material safety and efficacy.