The Webcaster X2 is an all in one device that combines the functionality of a capture device and computer. The device produces high quality output and it integrated with the BabyFlix service. Here is a link to the device info;
The Webcaster can be ordered directly through BabyFlix.
The Webcaster may require a scaler device if the signal coming from the ultrasound is something other than 720p or 1080p. Here is a link to the device;
The Webcaster does not have the ability to store data locally, so a DVD burner or another device that can record locally is recommended. Here is a link to a device that can work as a backup;