Recent breakthroughs include:
• Bioprinted scaffolds, seeded with cardiomyocytes, derived from induced pluripotent stem cells.
• Hydrogels engineered to mimic extracellular matrix composition.
• Microvascular patterning that allows diffusion and early perfusion.
• Partial heart structures, such as valves and ventricles, capable of contraction.
This early construct can sustain rhythmic beating in vitro, marking a critical milestone; however, as emphasized in the talk, the artificial components survive only days( not weeks), due to limits of vascular maturity, mechanical durability and electrophysiologic coordination. Still, the trajectory is promising. Engineers are closing in on methods to create multilayered vascularized tissues that resemble the complex architecture of the myocardium. If researchers can solve scale, perfusion and durability problems, the first generation of implantable bioprinted organs may shift heart replacement from a scarcity-driven model to one of on-demand manufacturing.
Clinical Implications- Preparing Physicians for the Future
As we move deeper into the era of regenerative cardiac therapy, clinicians will increasingly encounter:
• The transition zone between mechanical and biological solutions.
• Patient-specific organ fabrication.
• New training demands.
• Ethical and regulatory challenges.
The latest in the artificial heart is the change in mechanical structure: from four cardiac cavities, two atria and two ventricles, to a single disc to simplify the total artificial heart model, to avoid clotting and to avoid the need for anticoagulation.
BiVACOR was born. It is a medical device company pioneering the development of a long-term therapy for patients with biventricular heart failure. The inventor of the BiVACOR device was Dr. Daniel Timms, PhD, from Australia. His device is powerful, smart, durable, small and portable, and made from titanium that can last for years( see pictures). Its website notes that the first in-human clinical study came into being a year ago July, with four clinical sites scheduled to participate( University Medical Center in Phoenix, Duke University Hospital, The Christ Hospital in Cincinnati and the Texas Heart Institute).
Conclusion
The progress from the Jarvik-7 to the SYNCARDIA TAH, and now to early bioprinted cardiac constructs, represents a stunning acceleration in both imagination and capability. What began as bulky mechanical pumps may soon evolve into bespoke biological organs grown specifically for each patient.
For today’ s physicians, the message is clear: the era of heart replacement is shifting rapidly, and the future – biological, customizable and regenerative – is approaching faster than most of us expected.
References
1
S. F. Yared, G. S. Johnson, and W. C. DeVries,“ Results of artificial heart implantation in man. Trans. Proc., 18( 2): 69-74, 1986.
2
Wiley Interscience.( 1988) Total Artificial Heart. John G. Webster, editor-in-chief. Encyclopedia of Medical Devices and Instrumentation( p. 1429-1439).
3
D. A. Cooley, T. Akutsu, and J. C. Norman,“ Total artificial heart in two-staged cardiac transplantation.” Cardiovascular. Dis.( Houston), 8( 3): 305-319, 1981.
4
L. A. Gray, JR, total artificial heart Abiocor) in the treatment of advanced heart disease, 2005.
This summary was generated by AI transcription software based on the live presentation delivered during the GLMS Foundation’ s Senior Physician Speaker Series. Thank you to Dr. Sam Yared for reviewing and adding insights to this summary. Final editing provided by Dr. Mary Barry.
GLMS Foundation Senior Physicians Speaker Series
Make sure to add these dates to your calendar so you don’ t miss out! 2026 Dates- February 3, April 7, May 5, June 2, August 4, September 2, October 6 and December 1
All meetings will take place at noon via Zoom. The program is free and open to GLMS members and their guest. Please contact us for more information on the programs and how to access the meetings. Senior Physicians Committee Chair, Dr. Sam Yared, has several speakers already lined up, but is always looking for new ideas. If you have suggestions on potential speakers or topics, please reach out, we would love to hear your ideas! Missed a recent program and want to catch up? Contact us for a link to the recordings. foundation @ glms. org | 502-736-6366
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