I live in my recliner/lift chair that I control hands free from my computer. Luckily I have managed to train myself with about 99% accuracy to go to the toilet for #2 at the same time every morning. I wear very loose fitting flannel pants (no underwear) with a modified fly ( added velcro to and extended the opening about 1-1.5 inches down) For #1 I use a urinal and raise the lift chair up high to give me a nice angle down. I'm thinking this would be workable with the right shaped funnel for a women. For trips to the toilet I use a u sling, tilting shower/toilet chair and a patient lift. Goes like this :
1) lift chair up, caregiver in front
2) pants pulled down on both sides - no need to go all the way just down on the sides/hips
3) while leaning forward on caregiver, sling is placed behind my back
4) lift chair is lowered down into a normal upright seating position
5) sling placement is finished - under the legs
6) patient lift hooked up and raised up - and pants can be tugged down farther
7) toilet chair under, tilted back. Lower in place.
8) sling removed from under my legs/butt, we leave it behind my back. Pants at this point should be only be slightly under the legs and come right off. Toilet chair moved upright and off to the bathroom
9) putting pants back on requires some patience but not much force. You have to work them up as far as you can before putting the sling back under the legs. Do this with toilet chair tilted back to reduce the weight on the butt. Helpful to bunch the pants legs up as high as possible first
10) While in the air, pull pants up farther
11) once back in the chair we remove legs part of sling and chair is raised back up and sling is completely removed from behind my back, we give the pants a little tug more while we are there
12) chair is put in zero gravity position and backrest reclined far back - a little tug on the waste of the pants simultaneously pulls them up more if needed and gets me properly slid back in the chair. Then get into a comfortable position and fix/un-bunch pants legs
Sounds like a lot of work, but the chair and hoist do all the heavy parts and the time from chair to toilet is less than 5 minutes. I'm 5'9" 155-160#, caregiver is 4'11 115#
All my best, Jim