US 11,426,226 B2 · Orthopedic screw extractor

Abstract

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.

Claims21

Dependent claims

An orthopedic screw extractor comprising:

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 having:
a frustoconical shape having a side at a taper angle α of about 5 to 15 degrees relative to a longitudinal axis of the screw extracting tip, and
screw threads including:
a lead of about 0.04 to 0.14 inches,
a pitch of about 0.01 to 0.05 inches, and
a depth of about 0.004 to 0.03 inches.

6 more elements

Dependencies are inferred from the claim text.

Orthopedic screw extractor

Life of this patent

Orthopedic screw extractor

Life of this patent

Abstract

Claims21