Complex sentence: Van Phillips (born 1954) is an American inventor of prosthetics, he is known for the Flex-Foot brand of artificial foot and limbs that he created, and for his charity work for amputees.
Split into simpler sentences: Van Phillips (born 1954) is an American inventor of prosthetics. He is known for the Flex-Foot brand of artificial foot and limbs that he created, and for his charity work for amputees.