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HoloPatch: improving intracardiac patch fit through holographically modelled templates.

Matthias Lippert^1,2, Gabriella d' Albenzio^1,3, Kathrine Rydén Suther⁴

¹Division for Technology and Innovation, The Intervention Centre, Oslo University Hospital, PO Box 4950 Nydalen, 0424 Oslo, Norway.

European Heart Journal. Imaging Methods and Practice

|October 23, 2024

Summary

Digital patch templates created using mixed-reality technology closely match surgical materials for structural heart defect repair. This approach may reduce complications associated with ventricular septal defect closure and intracardiac rerouting.

Keywords:

3D print HoloLens cardiothoracic surgery congenital heart disease mixed-reality

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Area of Science:

Cardiovascular Surgery
Medical Device Technology
Digital Health

Background:

Surgical repair of structural heart defects often uses hand-cut patches.
Imperfect patch fit can lead to complications like outflow tract obstruction and residual defects.

Purpose of the Study:

To benchmark mixed-reality (MR) and desktop applications for creating digital heart patch templates.
To compare digital patches against actual implanted surgical material.

Main Methods:

Digital models of implanted patches were created from surgical remnants.
Clinical experts generated digital patches using MR and desktop software.
Comparison with a digitalized model of the real patch and assessment of residual shunt risk.

Main Results:

MR-created digital patches closely matched the size of the actual surgical material.
Desktop application patches were significantly smaller than the real patches.
Evaluator preferences varied for assessing shunt risk and patch area.

Conclusions:

Digital patch templates, particularly those from MR, show promise for accurate preoperative sizing.
This technology may help reduce post-operative complications in structural heart defect repair.