Balloon sizing device and method of positioning a prosthetic heart valve
First Claim
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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.
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Abstract
A sizing device for a collapsible prosthetic heart valve, the sizing device includes a collapsible and expandable balloon having a proximal end, a distal end. At least one microelectromechanical sensor is coupled to the balloon, the at least one sensor being capable of measuring information related to size and stiffness of tissue.
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11 Claims
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- 9. 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, the flexible substrate being directly coupled edge-to-edge along seams to adjacent substrates to form a collapsible and expandable balloon, each of the plurality of microelectromechanical sensors 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 being capable of independently measuring, with respect to others, a property of tissue.
Specification