Bio-compatibility Testing

BIO-COMPATIBILITY TESTING

One of the necessary conditions for the clinical usage of biomaterials in orthopedics is biocompatibility. It describes a bio-material’s capacity to carry out its intended function without causing hazardous or harmful effects on biological systems but eliciting the proper host reaction in a given situation. Today, bio-compatibility also encompasses functionality and biostability in addition to bio-inertia.

The most straightforward method of determining a device’s bio-compatibility is an implant study. A living tissue is made to come in direct contact with the test substance. The implant site is recovered and microscopically checked for tissue reactivity once the required time has passed.

For novel bio-materials, excellent bio-compatibility and functional qualities are highly desired. The bio-compatibility of bio-materials can be influenced by their chemical, mechanical, and structural interactions with the biological environment or even by the assessment method.

A wide range of in vitro and in vivo tests related to cytocompatibility, genotoxicity, sensitization, irritation, acute and chronic toxicity, hemocompatibility, reproductive and developmental toxicity, carcinogenicity, implantation, and degradation are included in the biological evaluation of bio-materials and are specified in various international standards.

Video 01: Bio-compatibility testing of medical devices

Advantages of Bio-Compatibility Testing

• Rapid implementation
• In-vitro is cost-effective
• Convenient control in a testing phase

Limitations of Bio-Compatibility Testing

• To demonstrate the proper biological response, they must be non-toxic, thrombogenic, non-carcinogenic, non-antigenic, and non-mutagenic.

Industrial Application of Bio-Compatibility Testing

• Bio-compatibility testing, a crucial component of biological risk assessment, evaluates the compatibility of medical devices with biological systems.
• A cellular bio-compatibility test’s objective is to rate a substance’s cytotoxicity on a scale of 0 to 3 (i.e., noncytotoxic to highly cytotoxic)