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Updated: Jun 10, 2026

Rapid Formation and Testing of Self-expanding NiTi Frames with a Small Form Factor Suitable for Minimally Invasive Implants

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Published on: March 7, 2025

Surface modifications of nitinol.

Waseem Haider¹, N Munroe, V Tek

¹Applied Research Center, Florida International University, FL, USA. whaid001@fiu.edu

Journal of Long-Term Effects of Medical Implants

|July 30, 2010

Summary

This summary is machine-generated.

Nitinol, a nickel-titanium alloy used in medical implants, can release nickel. Surface modifications and coatings are crucial for inhibiting nickel release and improving biocompatibility of Nitinol devices.

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Area of Science:

Biomaterials Science
Materials Engineering
Medical Device Technology

Background:

Nitinol (Nickel-Titanium) is widely used in medical implants.
Nickel ion release from Nitinol poses a biocompatibility concern.
Surface modification is key to mitigating nickel release.

Purpose of the Study:

To review surface treatments for Nitinol implants.
To inhibit nickel release and enhance biocompatibility.
To discuss in-service properties of modified Nitinol.

Main Methods:

Review of passivation techniques.
Electropolishing and magnetoelectropolishing.
Ion beam implantation and artificial coatings.

Main Results:

Various surface treatments can reduce nickel ion release.
Modified Nitinol surfaces show improved biocompatibility.
Passivating oxides play a role in material stability.

Conclusions:

Surface modification is essential for safe Nitinol medical implants.
Optimized treatments enhance corrosion resistance and biocompatibility.
Further research on Nitinol surface engineering is warranted.