I saw this advertised in MS Matters. It’s a device that can be used at home for when someone is choking. Looks straightforward & costs just over £50.
There’s a video on the site to show you how to use it.
Well worth getting if you tend to choke when swallowing. It does say you can use it on yourself, but personally I doubt that as you would also be in a panic… but an excellent device for care givers.