Medical device manufacturers commonly will spin there own connectors for attaching there disposable consumables to be used on there devices as a means to prevent third parties from being able to clone there consumables.
What type of transducer are you trying to use. There may well be others available that use more conventional connectors such as Lemo.
Just noticed the link you put. These types of single use transducers are used with cable assemblies that connect back to the main system. When mated with there specific cable there ip rated. The cable assemblies can also be sterile single use or reusable which can be reprocessed.
There are 5 main types. All the systems I have worked on have the BD type. There is also the Utah, Philips, Molex Abbot and the Edwards which type you have.