Cardiac disease treatment and device
A jacket of biological compatible material has an internal volume dimensioned for an apex of the heart to be inserted into the volume and for the jacket to be slipped over the heart. The jacket has a longitudinal dimension between upper and lower ends sufficient for the jacket to surround a lower portion of the heart with the jacket surrounding a valvular annulus of the heart and further surrounding the lower portion to cover at least the ventricular lower extremities of the heart. The jacket is adapted to be secured to the heart with the jacket surrounding at least the valvular annulus and the ventricular lower extremities. The jacket is adjustable on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole.
1. A device for treating a disease of a heart, the device comprising:
a jacket of flexible, biologically compatible material having open cells, wherein said jacket is dimensioned so as to be fitted over a human heart in a living person and adapted to be secured to said heart with said jacket having portions disposed on opposite sides of the heart, said jacket adapted to be adjusted on said heart to snugly conform to an external geometry of said heart and present a resistance to excessive diastolic expansion without precluding diastolic filling and permit substantially unimpeded contraction of said heart during systole, and wherein said jacket material includes a coating.
2. The device according to claim 1 , wherein said coating comprises an anti-fibrosis coating.
3. The device according to claim 1 , wherein said coating comprises a PTFE coating.
4. The device according to claim 1 , wherein said jacket material is selected from polyester, polytetrafluoroethylene (PTFE), expanded PTFE (ePTFE), polypropylene and stainless steel.
5. The device according to claim 1 , wherein at least one of said jacket material and coating comprise an electrical insulator.
6. The device according to claim 1 , wherein said jacket is configured to constrain a lower portion of the heart.
7. The device according to claim 1 , wherein said jacket is dimensioned so as to be placed circumferentially surrounds said heart.
8. The device according to claim 1 , wherein said jacket material comprises interwoven fiber strands.
9. The device according to claim 1 , wherein said jacket material comprises a knit.
10. A method for treating a disease of a heart, the device comprising:
selecting a jacket of flexible, biologically compatible material having open cells, wherein said jacket is dimensioned so as to be fitted over a human heart in a living person and adapted to be secured to said heart with said jacket having portions disposed on opposite sides of the heart, said jacket adapted to be adjusted on said heart to snugly conform to an external geometry of said heart and present a resistance to excessive diastolic expansion without precluding diastolic filling and permit substantially unimpeded contraction of said heart during systole, and wherein said jacket material includes a coating;
fitting said jacket over a human heart in a living person;
securing with said jacket to said heart with said jacket at least having portions disposed on opposite sides of the heart;
adjusting said jacket on said heart to snugly conform to an external geometry of said heart and present a resistance to excessive diastolic expansion without precluding diastolic filling and permitting substantially unimpeded contraction of said heart during systole.
11. A method according to claim 10 , wherein said jacket is placed circumferentially surrounds said heart.
12. A method according to claim 10 , wherein said jacket is positioned to constrain a lower portion of the heart.
13. A method according to claim 10 including positioning said jacket with an anti-fibrosis coating opposing said heart.