The David procedure: valve-sparing aortic root replacement: is among the most technically demanding operations in cardiac surgery. Outcomes depend on the surgeon's craftsmanship and repeated intraoperative measurements. EDF (Elibol's David Facilitator) is a patented mechanical instrument that standardizes those measurement and seating steps.
In the David Procedure, the surgeon re-implants the native aortic valve inside its own root while preserving the geometry of the sinotubular junction and the sinuses of Valsalva: a precise reconstruction that minimizes the risk of valve insufficiency.
Outcome depends heavily on the surgeon's intraoperative measurements and the ability to hold those measurements while suturing. That variability translates into inconsistent results across centers and surgeons.
1. Precise measurement
EDF enables reproducible measurement of aortic root geometry: the critical dimensions for valve coaptation.
2. Stable seating
The instrument holds the suture ring and graft in a fixed geometry, reducing manual error.
3. Reproducible outcomes
Standardized steps aim for consistent results across surgeons operating on similar anatomy.
Valve-sparing repair frees patients from a lifetime of anticoagulation that comes with mechanical valves. Standardizing the procedure brings the technique beyond high-volume centers: to more patients who need it.
What is the difference between EDF and ESR?
EDF (Elibol's David Facilitator) standardizes the David Procedure; ESR (Elibol's Sutureless Ring) is designed for vacuum-supported sutureless LVAD implantation.
Is this an implantable device?
EDF is a surgical aid used during the operation: it does not stay in the patient. Its patented design supports the measurement and seating steps of the procedure.
Does it change the existing surgical technique?
No. The goal is standardization, not change: a mechanical aid that integrates into the surgeon's usual David procedure flow.