Bottom views of the surgical instrument backend housing embodiments are omitted as the bottom view forms no part of the claimed design.
The surgical instrument backend housing is not limited to the scale shown herein.
The shade lines in the Figures show contour and not surface ornamentation.
The dash-dot-dash broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while the unclaimed shaft and all other broken lines are included for the purpose of illustrating portions and environmental elements of the surgical instrument backend housing; the broken lines form no part of the claimed design.