So the plan is to keep one around the house, maintained in good condition, to take with you to the hospital?

No. The current survival stats involve 20% of those infected ending up in ICU. If this was to become a pandemic that would require millions of respirators to maintain that survival rate. Think about that and what "condition" you would accept for a respirator.

And if the staff is t trained on that particular model, there is no way they’ll use it.