John A Reimer

US Patent:

20180281216, Oct 4, 2018

Filed:

Mar 31, 2017

Appl. No.:

15/475530

Inventors:

- Milwaukee WI, US
John Reimer - Wauwatosa WI, US
Eric Schmitt - Sussex WI, US

International Classification:

B26D 1/06

Abstract:

An assembly and method of forming a press cutting die assembly that is configured to perforate a tissue graft blank during cutting of the blank from a bulk graft material. The press cutting die assembly includes a frame, a perimeter blade, and a plurality of fenestration blades that extend between respective portions of the perimeter blade. In a preferred embodiment, the plurality of fenestration blades are provided in at least two groups to form a repeating pattern of preferably uniformly spaced perforations within the perimeter of the blank. Such a press cutting die assembly is particularly applicable for cutting biologically compatible materials having a desired shape and uniform fenestration pattern from a bulk source of the biologically compatible material.