for person with damaged lower limb.
One typical French dining-room chair with removable (usually straw) seat.
Four pieces of wood appropriately fashioned (e.g. 4 slats from a discarded modern bed) and saw to correct lengthssee photos.)
One bucket, ideally one already used to contain 'grey water' for garden use.
1. Remove straw seat
2. Position two shorter slats to accommodate buttocks, thus making the unpatentable contraption nevertheless maximally-adjustable
3. Support slop-bucket on two lower (and longer) slats.
5. remove bucket
…Et Cætera, then flush evacuation down conventional porcelain installation (known as a water-closet) which it is not advisable to use in circumstance of lower-body trauma.