US 12,263,332 B2
Material characteristics ideal for providing either partial or total mechanical support to the failing or arrested heart and method for developing ideal characteristics for underlying cardiac disorders
Mark P. Anstadt, Kettering, OH (US)
Assigned to Lifebridge Technologies LLC, Dayton, OH (US)
Filed by Lifebridge Technologies, LLC, Dayton, OH (US)
Filed on Jan. 5, 2023, as Appl. No. 18/150,746.
Application 18/150,746 is a continuation in part of application No. 17/931,853, filed on Sep. 13, 2022.
Prior Publication US 2024/0091522 A1, Mar. 21, 2024
Int. Cl. A61M 60/191 (2021.01); A61M 60/289 (2021.01); A61M 60/178 (2021.01); A61M 60/515 (2021.01); F15B 15/10 (2006.01)
CPC A61M 60/191 (2021.01) [A61M 60/289 (2021.01); A61M 60/178 (2021.01); A61M 60/515 (2021.01); F15B 15/103 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of determining strain characteristics for a construct being applied to a heart, said method including:
determining a set of strain characteristics required to be applied to the heart to provide an assist the heart that causes the heart to pump in a more efficient manner;
providing a construct with elastomeric elements, wherein each of said elastomeric elements expands along multiple axes when internally pressurized, and wherein said multiple axes include a first axis and a second axis;
in an unloaded condition remote from the heart, internally pressurizing said elastomeric elements to determine a pressure differential experienced by said elastomeric elements within said construct;
in said unloaded condition, calculating a first strain characteristic along said first axis as a function of said pressure differential by multiplying a log of said pressure differential times a first constant and subtracting a second constant;
in said unloaded condition, calculating a second strain characteristic along said second axis as a function of said pressure differential;
utilizing said first strain characteristic and said second strain characteristic to estimate dynamic strain characteristics to be applied by said construct;
comparing said dynamic strain characteristics estimated for said construct to said set of strain characteristics to determine if said construct will assist the heart in pumping;
placing said construct into contact with the heart in vivo; and
operating said construct to determine if said construct provides said assist to the heart.