David Jacobs;William Lucas Churchill;William Harwick Gruber;Ronald David Adams;Eric Karl Litscher;Albert Chun-Chi Chin;Roy Hewitt Sullivan
发明人:
Roy Hewitt Sullivan,Albert Chun-Chi Chin,Eric Karl Litscher,William Lucas Churchill,Ronald David Adams,William Harwick Gruber,David Jacobs
申请号：
US12432686
公开号：
US09095366B2
申请日:
2009.04.29
申请国别(地区):
US
年份:
2015
代理人:
摘要：
Disclosed is a tubular cutting element for axial reciprocal movement within an outer tubular sleeve. The cutting element has an elongate tubular body, having a proximal end, a distal end and a cutting tip. The tubular body is formed in a drawing operation and the cutting tip is formed in a milling operation. The tubular body may have a Rockwell C hardness of no more than about 40, and the cutting tip may have a Rockwell C hardness of at least about 50.
