I hear ya, I do everything I can to make sure my therapists have no grounds to lock me up, ever. In the US, as long as you have them convinced that you have no INTENTION, you should be able to safely address the IDEATION. However, I believe that even if you only have ideation and not intention, they can still put you on a monitoring program in which you are required to check in with them at preset times, and if you don't check in, they can have emergency personnel (cops and ambulance) sent to find you and take you in for evaluation, which at the local hospital where I am, means they lock you on the psych floor to wait for 36 hours.

But your T and Dr may be able to help rid you of these unwanted suicidal thoughts, which makes it worth the risk. To me, that's worth it.

I've been locked up twice. The first- I didn't go to therapy, attempted to take my own life and then, not in my right mind, struggled with the EMTs, and was charged with assault, which got me 2 felony charges -if I hadn't come up with bail and 5K for the lawyer, would have resulted in years of imprisonment. The second- I checked myself in, and was out in 3 days.