Jack Lloyd, inventor of pulse oximeter, dies at 90 in Orinda

Jack Lloyd, the prolific East Bay engineer and inventor who helped bring the pulse oximeter to routine medical use, died May 1 at his Orinda home at age 90. His wife Lynne died nine days later.

- Lloyd collaborated with Nobel laureate Luis Alvarez at the Berkeley Radiation Laboratory. - He founded Nellcor, which commercialized the pulse oximeter, reducing anesthesia deaths from 20,000 to dozens per year.

- His later ventures included SafeinHome, a system for adults with developmental disabilities. - Lloyd and his wife will be interred together at Queen of Heaven Cemetery in Lafayette, with a celebration of life on July 11.