The ACross Transseptal Access System makes transseptal procedures easier, using needle deployment that is controlled and intuitive orientation, along with improved consistency by means of an interlocking system. This system combines dilator, sheath and needle within one interlocking system, reducing the complexity in transseptal procedures. Controlled needle deployment is provided by the ergonomic handle and it assists to maintain a position that is more stable in the cardiac anatomy. Based on the transseptal technology of St. Jude that is leading in the market, the ACross System works with the techniques and approaches that are already in use in EP labs all around the world. There are three ways the procedures get simplified by the ACross Transseptal Access System. It is designed for orientation that is intuitive. There is improvement in consistency by means of an interlocking system. The controlled needle deployment limits the advancement of needle distance for increased control and confidence.