초록 ▼

Implements, particularly medical instruments, formed at least in part of elongated polymer members, exhibit high torque fidelity after processing with tension, heat, and twisting. The processing orients the polymer in generally helical paths so that torque imposed at the proximal end can be transmit

Implements, particularly medical instruments, formed at least in part of elongated polymer members, exhibit high torque fidelity after processing with tension, heat, and twisting. The processing orients the polymer in generally helical paths so that torque imposed at the proximal end can be transmitted to the distal end without substantial whipping, even if the implement follows a long and tortuous pathway. Applications include medical guidewires, catheters, and driveshafts.

대표청구항 ▼

[ What is claimed is:] [1.] An elongated medical instrument formed at least in part by an extended element that is subject to torque in use, said element being a structural body, at least a segment of said element composed of polymer molecules, a substantial portion of said polymer molecules being n

[ What is claimed is:] [1.] An elongated medical instrument formed at least in part by an extended element that is subject to torque in use, said element being a structural body, at least a segment of said element composed of polymer molecules, a substantial portion of said polymer molecules being non-liquid crystal polymer molecules helically oriented about the instrument axis.