US 9,808,342 B2
Balloon sizing device and method of positioning a prosthetic heart valve
Ramji T. Venkatasubramanian, Maplewood, MN (US); and Peng Peng, Falcon Heights, MN (US)
Assigned to St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US)
Filed by St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US)
Filed on Mar. 7, 2013, as Appl. No. 13/788,663.
Claims priority of provisional application 61/667,578, filed on Jul. 3, 2012.
Prior Publication US 2014/0012367 A1, Jan. 9, 2014
Int. Cl. A61F 2/24 (2006.01); A61B 5/02 (2006.01); A61B 5/107 (2006.01)
CPC A61F 2/2496 (2013.01) [A61B 5/02007 (2013.01); A61B 5/1076 (2013.01); A61B 2562/028 (2013.01); A61F 2250/0096 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A sizing device for a collapsible prosthetic heart valve, the sizing device comprising:
a plurality of microelectromechanical sensors, each of the plurality of microelectromechanical sensors being disposed on a flexible substrate, having a top electrode having a contacting surface, a bottom electrode, and an air gap disposed between the top electrode and the bottom electrode, the top electrode and the bottom electrode being deflectable relative to one another, and configured to measure capacitive changes to determine a relative deflection between the top electrode and the bottom electrode, each of the plurality of microelectromechanical sensors being capable of independently measuring, with respect to others, a stiffness value of a native valve annulus by pressing against portions of the native valve annulus with the contacting surface, each flexible substrate being joined edge-to-edge along seams with adjacent substrates to form a collapsible and expandable balloon.