For many years, permanent implants have been made using polyether ether ketone (PEEK), a very durable technical substance with a decades-long track record. Its use in the 3D printing of implants and medical devices has seen a sharp increase in popularity recently.  Engineered to ensure the highest quality using medical-grade PEEK resin can be used for implants, surgical instruments, and devices (such as body fluid containers, microfluidic devices, pump impellers, stirrers, etc.) that requiere biocompatible, robust, and strong 3D printed items that are comparable to molding, exceptional strength and impact resistance, and resistance to most chemicals, especially acids, are all certified by USP Class VI and ISO 10993.