You are exactly right. In artificial hearts you start with water, then glycol water that mimics the specific gravity and viscosity of blood, then dead blood from the Ranch 99, then you can get freshly drawn blood from an animal lab and keep that warm and circulate that, then you put the pump on the outside of an animal and plumb blood in and out, then after passing all that you do an animal implant. You can't use cadavers because they usually have their blood drained.
A parallel of this entire workflow exists for brain cells. You can grow animal neurons in a test tube and teach them to fly a flight simulator. This work was published 18 years ago, likely done a fair bit before then:
https://www.newscientist.com/article/dn6573-brain-cells-in-a...
You are exactly right. In artificial hearts you start with water, then glycol water that mimics the specific gravity and viscosity of blood, then dead blood from the Ranch 99, then you can get freshly drawn blood from an animal lab and keep that warm and circulate that, then you put the pump on the outside of an animal and plumb blood in and out, then after passing all that you do an animal implant. You can't use cadavers because they usually have their blood drained.
A parallel of this entire workflow exists for brain cells. You can grow animal neurons in a test tube and teach them to fly a flight simulator. This work was published 18 years ago, likely done a fair bit before then: https://www.newscientist.com/article/dn6573-brain-cells-in-a...