Side-looking expandable frame and device for steering interventional devices

A side-looking steering device for positioning an interventional device within a patient comprising:

• A side-looking expandable frame that is shaped to deploy outwardly within a cavity, such as a vessel lumen, a stent graft, or a cardiac chamber, the side-looking expandable frame having a plurality of elongate leaflet members having a common bend direction and distal ends;
• a set of strings anchored on the distal ends of the side-looking expandable frame;
• an angled internal catheter that is secured inside the side-looking expandable frame and is supported by the set of strings which are connected to a distal end of the angled internal catheter;
• wherein by using the set of strings, the angled internal catheter is manipulated with at least one degree of freedom to control the position of an interventional device.

A side-looking expandable frame for positioning an interventional device within a patient comprising:

• a tubular base having a proximal end and a distal end, the tubular base sized for an angled internal catheter to extend therethrough;
• a plurality of leaflets of varied lengths extending from the distal end of the tubular base;
• and
• wherein each of the plurality of leaflets are biased to expand a first portion outwardly in a straight configuration and biased to expand a second portion outwardly at an angled configuration to a side.