Biomaterials are substances that are engineered to interact with biological systems for medical purposes. They can be derived from natural sources or synthesized in laboratories, and are used in a variety of applications, including implants, drug delivery systems, and tissue engineering. The goal of biomaterials is to improve the performance of medical devices and enhance the healing process in the body. These materials can be classified into different categories based on their origin, such as natural or synthetic, and their function, such as biodegradable or non-biodegradable. The development of biomaterials is crucial for advancing medical technology and improving patient outcomes in areas like orthopedics and cardiology.