Operating on your timeline,
not the organ's.
VP.S ENCORE® is being developed to extend the operative window beyond standard cold storage — supporting donor heart viability across longer distances, tighter schedules, and more complex recoveries.
When the window closes, options narrow.
The four-hour ischemic ceiling shapes every decision in a cardiac recovery — from geography to case scheduling to retrieval staffing. A longer window changes the calculus.
- A four-hour ischemic ceilingStandard cold storage preserves donor hearts for up to four hours — forcing tight logistics at every step from retrieval to cross-clamp.
- Geographic limitsDistance between donor and recipient becomes a hard constraint, not a planning variable.
- Retrieval-team pressureSetup, transport, and case scheduling compress into a window that leaves little room for contingency.
- Untransplanted heartsOnly about 30% of available donor hearts are transplanted — many never reach a recipient because logistics collapse before surgery can begin.
Every hour the window holds is an hour the team has for everything else — the case, the airway, the patient.
A longer window. A different calculus.
Plan with margin
Tighter retrieval schedules become tolerable. Teams coordinate around clinical priorities, not arbitrary ischemia clocks.
Preserve, don't race
Continuous hypothermic machine perfusion limits ischemic injury during transit — the organ arrives conditioned, not just cold.
Transition on your terms
The built-in fallback protects the organ if the case is delayed, giving the surgical team control of the final sequence.
Peer perspectives.
Composite clinical perspectives — not attributed to named individuals. VP.S ENCORE® is premarket; these summaries reflect themes from surgeon and retrieval-team feedback during preclinical evaluation.
"A simpler circuit means fewer places for the system to fail on the way to the OR. That matters more than any specification on the data sheet."Composite · Cardiothoracic Surgeon, Academic Medical Center
"Extending viability isn't about traveling further — it's about giving the team margin to make the right call in the room."Composite · Transplant Surgeon, High-Volume Program
"Passive cooling is underrated. It's one less thing to manage at 3 a.m. on a turboprop."Composite · Cardiac Surgeon, Regional Transplant Center
"The fallback mode is the feature that actually matters. It respects that real recoveries don't go to plan."Composite · Cardiothoracic Fellow, Quaternary Center