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US 8,601,923 B1Granted
Rod cutter with exchangeable cutters
AssigneeBradshaw Medical, Inc.
InventorHua Gao
Life of this patent
Estimating the term…
Abstract
A rod cutter having two cutters that are exchangeable and with one thereof being operatively stationary and the other being pivotally and with cutting edges therebetween. A cover extends over the cutters so that access to the cutters is available, and they can be interchanged in their installed positions to reposition the cutting edges exposed to the rod. A ball bearing supports the pivotal cutter and it has an axial restriction for rendering axial support to the pivotal cutter. The method of cutting with both radial and axial cutter support is described.
Claims12
A ball bearing rod cutter comprised of:
- two handles pivoted together along a pivot axis, and rod cutters on said handles for receiving a rod to be cut,
- each of said handles having a hexagonal recess with one or more hexagonal mating surfaces for receiving a hexagonal tubular body wherein said hexagonal recesses face each other,
- two hexagonal rod cutters disposed in each of said hexagonal recesses for the pivoting of one of each of said hexagonal cutters with the pivoting of one of said handles,
- wherein said hexagonal cutters each have an opening for receiving a rod extending in length parallel to said pivot axis and to be cut in length, and
- a cover removably mounted on each of said handles and extending over each of said cutters for removably securing said cutters on said handles,
- a hexagonal tubular body having an inner portion and an outer portion, wherein said outer portion includes two rows of ball bearings disposed around said perimeter of said inner portion to receive both axial and radial loads during cutting action to prevent said hexagonal cutters from being disengaged by axial force during the cutting motion and said inner portion includes an elongated hexagonal end portion,
- wherein said hexagonal tubular body is operatively coupled with a gear which rotates with the rotation of the body,
- wherein said hexagonal tubular body has a hexagonal pocket for snug reception of one of said cutters.
5 more elements
Dependencies are inferred from the claim text.