Abstract: A medical device with a shaft having a proximal end and a distal end, the proximal end having an operational interface, the distal end having a working element, and the shaft may include a super alloy. In one example embodiment, the shaft may include a cobalt base alloy. In another example embodiment, a medical device includes a first portion having a super alloy, and a second portion having a dissimilar metal joined to the first portion by an arc welding technique. In another possible embodiment, a first portion includes a cobalt base alloy, and a second portion includes a non-metal joined to the first portion. The inventive subject matter also includes a method for joining a cobalt base alloy to a dissimilar metal by hermetic sealing, such as provided, for example, by an arc welding technique.

Abstract: A medical device with a shaft having a proximal end and a distal end, the proximal end having an operational interface, the distal end having a working element, and the shaft may include a super alloy. In one example embodiment, the shaft may include a cobalt base alloy. In another example embodiment, a medical device includes a first portion having a super alloy, and a second portion having a dissimilar metal joined to the first portion by an arc welding technique. In another possible embodiment, a first portion includes a cobalt base alloy, and a second portion includes a non-metal joined to the first portion. The inventive subject matter also includes a method for joining a cobalt base alloy to a dissimilar metal by hermetic sealing, such as provided, for example, by an arc welding technique.