US Patent 10337992 Optical assurance cap

A fluid connector assembly, including a fluid connector including a first through-bore, an optical assurance cap arranged on said fluid connector, said optical assurance cap including a second through-bore, a tubular connector arranged in said first through-bore and secured to said fluid connector, and a tester tool, including a channel, a light source, and a light sensor, said light source and said light sensor axially displaced from one another, wherein said optical assurance cap is arranged in said channel of said tester tool.