MEGAFORCE COMPANY LIMITED;MacKay Memorial Hospital
发明人:
Wen-Chieh Wu,Shu-Fen Chen,Pei-Yi Lee
申请号：
US15450992
公开号：
US10441260B2
申请日:
2017.03.06
申请国别(地区):
US
年份:
2019
代理人:
摘要：
An expander includes a first handle, a second handle, a first supporting member, and a second supporting member. The first handle includes a first gripping portion, a first pivoting portion, a first connecting portion, and an expanding compass. The second handle includes a second gripping portion, a second pivoting portion, and a second connecting portion. The second gripping portion includes a thru groove, and the expanding compass passes through the thru groove. The second pivoting portion is pivoted to the first pivoting portion. The second connecting portion and the second gripping portion are extending from two ends of the second pivoting portion, and the extension direction of the second connecting portion is not parallel to the extension direction of the second gripping portion.
