The present invention relates generally to variable stiffness transcutaneous medical devices including a distal portion designed to be more flexible than a proximal portion. The variable stiffness can be provided by a variable pitch in one or more wires of the device, a variable cross-section in one...http://www.google.es/patents/US7783333?utm_source=gb-gplus-sharePatente US7783333 - Transcutaneous medical device with variable stiffness
Transcutaneous medical device with variable stiffness
