Arne M Rimmereide

US Patent:

20160279391, Sep 29, 2016

Filed:

Mar 14, 2016

Appl. No.:

15/069248

Inventors:

- Chaska MN, US
Arne Rimmereide - Carver MN, US
Anthony Hausladen - Lester Prairie MN, US
James Allan Boegeman - Shakopee MN, US

International Classification:

A61M 25/09
C22C 19/03
B23K 20/00
B23K 20/227
B23K 20/02
B23K 20/12

Abstract:

A bi-metal medical guidewire with a core wire having a stainless steel proximal section and Nitinol distal section offers performance enhancements compared to guidewires made from either alloy alone. A solid-state, frictional welding or frictional joining process for Nitinol and stainless steel wires ranging in diameter from 0.013″ to 0.020″, without the need for tertiary metals, adhesive or ferrules is disclosed. The resulting frictional weld joint strength is approximately 80% of the tensile strength of the raw Nitinol wire with excellent bending properties.