US 12,004,793 B2 · Bi-Spring surgical hammer impact tools

Abstract

Disclosed herein are bi-spring surgical hammer impact tools and methods of use thereof. The bi-spring surgical hammer impact tools can include an elongated drive rod disposed in the housing and including an impact flange in a mid-region thereof. A tool implement can be mounted to a first end of the elongated drive rod. An impact shuttle can be mounted on the elongated drive rod and can include first and second impact surfaces opposing opposite faces of the impact flange. A plurality of annular teeth can be defined by an exterior surface of the impact shuttle. First and second springs can be disposed against opposite ends of the impact shuttle. A partial tooth pinion attached to a drive shaft and movable for engagement with the plurality of annular teeth of the impact shuttle can be included.

Claims20

Dependent claims

A bi-spring surgical impact tool comprising:

a housing;
an elongated drive rod disposed in the housing and including an impact flange in a mid-region thereof;
a tool implement mounted to a first end of the elongated drive rod;
an impact shuttle mounted on the elongated drive rod and including first and second impact surfaces opposing opposite faces of the impact flange and including a plurality of annular teeth on an exterior surface;
a first spring disposed against a first end of the impact shuttle;
a second spring disposed against a second end of the impact shuttle;
a motor having a drive shaft;
and
a partial tooth pinion attached to the drive shaft and movable for engagement with the plurality of annular teeth of the impact shuttle.

6 more elements

Dependencies are inferred from the claim text.

Bi-Spring surgical hammer impact tools

Life of this patent

Bi-Spring surgical hammer impact tools

Life of this patent

Abstract

Claims20