Diastolic recoil method and device for treatment of cardiac pathologies
The present invention provides methods and direct cardiac contact device to improve the diastole phase and the systolic phase of a heart and includes a biocompatible film pneumatic locked to the heart to aid in heart compression and relaxation.
1. A method to improve diastolic recoil of a heart using a direct cardiac contact compression and diastolic recoil device comprising the steps of:
implanting a diastolic recoil device around a heart, wherein the diastolic recoil device comprises
a biocompatible inner film adapted to fit about the heart, wherein the biocompatible inner film is adapted for constant contact with the heart to form a pneumatic lock with the heart so that the biocompatible inner film moves in conjunction with the heart,
an interlaced framework wherein at least a portion of the interlaced framework is in continuous contact with the biocompatible inner film throughout the cardiac cycle, wherein the interlaced framework applies a force during diastole to aid in diastolic recoil;
an outer film in contact with the biocompatible inner film,
one or more fluid chambers formed between the biocompatible inner film and the outer film, and
a fluid connection in fluid communication with the one or more fluid chambers;
forming a pneumatic lock between the heart and the biocompatible inner film so that the biocompatible inner film moves in conjunction with the heart;
pressurizing the one or more fluid chambers to expand the biocompatible inner film and selectively compress the heart; and
depressurize the one or more fluid chambers during recoil to contract the biocompatible inner film and move the biocompatible inner film away from the heart wherein the pneumatically locked biocompatible inner film pulls the heart open to aid in filling of the heart.
2. The method of claim 1 , further comprising the step of connecting a pneumatic driver to the fluid connection to pressurize the biocompatible inner film to compress the heart and depressurize the biocompatible inner membrane to aid in filling the heart.
3. The method of claim 2 , wherein the pneumatic driver provides a positive pressure and a negative pressure to pace the beating of the heart to synchronize a diastole phase and a systolic phase.
4. The method of claim 1 , wherein the biocompatible inner film comprises an elastomeric biocompatible material.
5. The method of claim 1 , further comprising the steps of varying a pressure to alter a end systolic configuration of the heart, an end diastolic configuration of the heart, or both.
6. The method of claim 1 , wherein the device separately modulates a end systolic configuration and an end diastolic configuration of the heart without introducing inverted curvature to the heart.
7. The method of claim 1 , wherein the device is adapted to be implanted minimally invasively through a mini left thoracic incision.