It is possible that an external charity may offer financing help to buy a mobility bed, these situations are few and far but it is worth checking with local charities in your area.

The Role of Hospital Benches in Healthcare Settings

How is a hospital bed different from a regular bed?
Hospital beds are specifically designed for individuals with health conditions that require special care. They offer features such as adjustability of height and bed sections, side rails for safety, and are often equipped with a special supportive mattress designed to prevent pressure sores.