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ORTHOPEDIC SCREW EXTRACTOR
专利权人:
发明人:
Subramanya Naglapura,Alfred Litwak
申请号:
US15585044
公开号:
US20170312001A1
申请日:
2017.05.02
申请国别(地区):
US
年份:
2017
代理人:
摘要:
An orthopedic screw extractor device including a shaft, an end portion about a first end of the shaft for securing to a handle, and a screw extracting tip about a second end of the shaft opposite the first end. The screw extracting tip further includes a generally frustoconical shape having a side at an angle of about 5 to 15 degrees relative to a longitudinal axis of the screw extracting tip. The screw extracting tip further includes first, second and third screw threads and first, second and third flutes circumferentially spaced about the screw extracting tip and extending across an entire length of the screw extracting tip. Each of the screw threads has a lead of about 0.07 to 0.12 inches, a pitch of about 0.02 to 0.04 inches, a thread angle of about 40 to 50 degrees, and a depth of about 0.01 to 0.02 inches.
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