AAMI (Association for the Advancement of Medical Instrumentation) standard is used by manufacturers to design its connectivity .

See the following list :

GE-medical Marquette pro 1000
Mindray PM7000/8000/9000;

Biolight : PM7000/8000/9000 as modular

Criticare: 602A-A, Poet 2, 504US Scholar 506,507,508,1100,1508 8100

Datascope

MDE/Invivo

Spacelab: 90701,90303,90305,90308,,90309, 90385

Welch Allyn Protocol