초록 ▼

A laser shock peening process for producing one or more compressive residual stress regions in a medical device is disclosed. A high-energy laser apparatus can be utilized to direct an intense laser beam through a confining medium and onto the target surface of a workpiece. An absorption overlay dis

A laser shock peening process for producing one or more compressive residual stress regions in a medical device is disclosed. A high-energy laser apparatus can be utilized to direct an intense laser beam through a confining medium and onto the target surface of a workpiece. An absorption overlay disposed on the target surface of the workpiece absorbs the laser beam, inducing a pressure shock wave that forms a compressive residual stress region deep within the workpiece. Medical devices such as stents and guidewires having one or more of these compressive residual stress regions are also disclosed.

대표청구항 ▼

What is claimed is: 1. A laser shock peening process for producing one or more vertical compressive residual stress regions in a medical device, the process comprising the steps ofproviding a medical device having a target surface to be irradiated;applying an absorption overlay onto the target surfa

What is claimed is: 1. A laser shock peening process for producing one or more vertical compressive residual stress regions in a medical device, the process comprising the steps ofproviding a medical device having a target surface to be irradiated;applying an absorption overlay onto the target surface of the medical device;providing a high-energy laser apparatus adjacent to the medical device, the laser apparatus including a laser source having a beam intensity sufficient to induce a pressure shock wave within the medical device; anddirecting one or more laser beams onto the absorption overlay to produce two or more simultaneous laterally overlapping shock waves which result in the formation of one or more vertical compressive residual stress regions within the medical device.