Any good recommendation for old folks that need support to stand up?

My dad has difficulty standing up, which is also due to his Parkinson's disease. His hand shakes even when there's something for him to hold for support.

He can stand and walk, however, only for a short period. We have bought him the 4 legged stand support for walking which he didn't really likes it due to restrictive mobility.

My mum is also getting old, so pushing him in wheelchairs are difficult for her.

Is there any motorised chairs that can support him to stand up while also able move him around? Or any other accessories that can be useful.