Quick shifter but not a quick shifter...

[acrmnsm]

Some of you may know that in Feb I broke my left ankle green laning, and have had surgery. (I will happily tell you all about it if you are interested)
It is all recovering fine, but this is the 3rd break in that ankle and it is a bit of an arthritic mess, and has been giving me gyp anyway, especially shifting.
There is a possibility that this most recent break and subsequent saw bones action, may have improved things.
However I am idly musing and thinking ahead, that one day changing gear might be hard. (Idleness is the danger of being stuck on the sofa recovering from surgery)

I'd like to buy or design&make a mechanism that replaces my foot, ie it shifts up or down when I press an up or down button. I am not bothered about quick shifting so do not need ignition cut out, I want to preserve clutch and throttle inputs as I am old an weird..
The control could be on the handle bars or near my foot, eg two buttons?

As I am back to biking after a break of nearly 20 years I have zero idea of what is out there. Maybe someone has done this already?
Reading about quickshifters, much is made of the electronic gubbins to cut the ignition, and it seems to me this is the significant part of the expense, so I wonder if I can just get the mechanical shift bit and not have to pay for some fancy electronics that interferes with my ignition?

Is this a dumb idea?
Or is it possible?
Does it exist already?

[tony.mon]

There are a few options.
https://www.bikesure.co.uk/bikesureblog ... ed%20trike.

Or there are air shift mechanisms used by drag racers, but these might be upshift only. And anything air powered will need a compressor and storage tank to ensure a supply.

Or simply attach a rod to the end of the lever and run it through a sleeve on the tank. You can then shift by hand- you'd still need to operate the clutch, so you'd need to pull or push the rod with your right hand.

What about a scooter style clutch, that rotates around the handlebar? That could have a push and pull cable to up or downshift while still having a working clutch.