Christopher P. Dougherty,Robert A. Van Wyk,Gary R. Heisler
申请号：
US14635266
公开号：
US20150245868A1
申请日:
2015.03.02
申请国别(地区):
US
年份:
2015
代理人:
摘要：
In the context of endoscopic electrosurgery, there is a need for a sufficiently robust, rigid, and preferably aspirating electrosurgical device that may be repeatedly flexed in the field to allow access to a wide array of remote tissues using a single device and, more preferably, during a single minimally invasive procedure. The present invention addresses this significant need by providing the distal portion of the elongate tubular member of an electrosurgical device with a bend region having a non-uniform flexural strength along its length, such that one may bend the tubular member at said bend region not only to an initial small radius bend, but subsequently rebend the distal portion to other angles as needed, with all bends occurring in the same distal region. The flexural strength in the bend region may be reduced by, for example, notching the tube in the bend region, annealing the tube in the bend region, or reducing the wall thickness in the bend region, or any combination of these means.
