True-scale overlay
The patient's own imaging is presented in the surgeon's view at life size, positioned against the operative field rather than on a distant screen.
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Patient imaging, registered onto the operative field.
HoloNav is mixed-reality surgical navigation support for head and neck surgery. It places the patient's own imaging in the surgeon's view at 1:1 scale — controlled entirely with gloved hands — while judgement and accountability stay with the surgeon.
Surgeon-in-the-loop
1:1 scale overlay
Gloved-hand control
Screens from the live HoloNav console. Synthetic imaging and case data only — no patient-identifiable information.
Features
Built for the sterile field.
HoloNav is designed as a surgeon-controlled product experience, not a public specification. The page describes the clinical value and safety posture without exposing implementation detail.
Layered anatomy
Skin, soft tissue and bone are reviewed as separate layers that can be faded or removed, so the anatomy that matters stays in focus.
Gloved-hand control
Every control is designed for scrubbed hands — gesture-driven, with no controllers, keyboards or touchscreens at the table.
Surgeon sign-off
Alignment is proposed, reviewed and accepted by the surgeon. Navigation support never substitutes for standard anatomical checks.
How it works
From patient imaging to the operative field.
The public workflow is deliberately high-level. Detailed product behaviour is not published on the open web.
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01
Import
The patient's routine imaging is brought into the case without extra acquisitions.
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02
Plan
Tissue layers and the surgical plan are reviewed and locked before theatre.
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03
Register
The plan is aligned to the operative field, with the alignment reviewed by the surgeon.
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04
Navigate
The overlay sits in the surgeon's view, controlled hands-free with gloved gestures.
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05
Sign
The operating surgeon remains accountable for every decision at the table.
Designed for theatre
Product-market fit without exposing the product map.
HoloNav is positioned for head and neck surgical environments where anatomy is complex, margins are small and the cost of console-based navigation puts it out of reach. Detailed workflow design is shared only with appropriate partners.
Navigation logic
Surgeon controlled
Imaging
Patient scans reviewed as tissue layers
Alignment
Proposed, then reviewed by the surgeon
Control
Gloved-hand gestures, hands-free
Decision
Surgeon review and sign-off
Public preview intentionally limited
Safety by design
The surgeon stays in charge.
Navigation support only
HoloNav supports orientation and planning in theatre. It does not direct the operation.
Standard checks unchanged
The overlay is an adjunct to — never a replacement for — standard anatomical checks and imaging review.
Human accountability
Alignment is accepted by the operating surgeon, who remains responsible throughout the procedure.
Evidence before claims
The product programme is being shaped around validation, clinical safety and deployment evidence.
FAQ
Questions from surgical teams.
HoloNav is available for guided walkthroughs with appropriate NHS and surgical teams. Public materials intentionally avoid product implementation detail.
What is HoloNav?+
HoloNav is mixed-reality surgical navigation support for head and neck surgery. It places the patient's own imaging in the surgeon's view at 1:1 scale, designed around surgeon control rather than autonomy.
Does HoloNav direct the surgery?+
No. It provides visual navigation support only. It does not direct the operation and does not replace standard anatomical checks, imaging review or surgical judgement.
How is it controlled in theatre?+
With gloved hands. The headset recognises the surgeon's hand gestures directly, so there are no controllers, keyboards or touchscreens to break the sterile field.
Do you publish the product logic?+
No. Public materials describe positioning, safety boundaries and clinical context only. Detailed workflow and implementation details are shared only in appropriate partner contexts.
How can we see it?+
Request a guided walkthrough through the booking page or email cs@csong.health with your organisation and role. Please do not send patient-identifiable data.
Pilot partners
See HoloNav in a controlled walkthrough.
Appropriate surgical teams can review the product in context without public disclosure of product logic or implementation detail.