What is the current limit of the ability to keep a body part alive through science?

The reason I ask is because womb technology won't be able to fit inside an android, meaning that males are automatically more likely to create an apocalypse scenario, and I'm confident enough in my programming and design skills to get a decent human facade going. This makes me the new alpha male for our species, and pretty soon organ cloning will reach the point of being able to create a complete working human phallus. Personally, sex doesn't interest me all that much, but being ready to procreate is a priority since longevity technology tops out at around ~230 years old and memory decline is already known to start sooner.

So, what do we need? Has there been any headway on artificial blood? Which types of animal tissue will be compatible with our cellular metabolism? Are there easy ways to replace damaged tissue or does it require excellent healing abilities to start?