Ask a medtech company how they collect patient-reported outcomes for a PMCF study and the honest answer is often an emailed survey link, a spreadsheet, and a lot of chasing. Response rates hover around 15%. The clinician who saw the patient never sees the data. And when the Notified Body asks where the numbers came from, the trail runs through someone’s inbox.
Patient Watch was built to fix the front end of that problem. Ledidi was built to fix the back end. We are delighted to announce that we are working together so that companies don’t have to stitch the two halves together themselves.
Where Patient Watch came from
Patient Watch didn’t start as a regulatory product. It started in 2021 when founder Guy Solan, then on a university summer break, watched his surgeon father working through paper symptom diaries that patients had posted back to him. The first prototype was simply a digital version of that diary.
What followed was five years of building alongside working clinicians: NHS quality-improvement projects at the Royal Surrey, a diabetic foot programme, private orthopaedic and sports-medicine clinics, and, more recently, multi-centre real-world evidence and post-market surveillance programmes for manufacturers across the UK, Germany and Denmark.
The result is a PROMs platform that clinicians actually use. A patient is enrolled in clinic by QR code in under thirty seconds. Reminders, validated questionnaires and follow-up windows run automatically. The clinician gets a live view of how their patients are doing, and the sponsor gets structured, timestamped outcome data. Patient Watch reports engagement rates around 85% on its programmes, which is a very different starting point for a PMCF study than a survey link.
Where Ledidi fits
Ledidi sits on the other side of the study. Our platform is where the clinical, device and safety data lives: a validated, no-code EDC for trials and PMCF investigations (GCP and FDA 21 CFR Part 11, with an independent GxP audit completed in January 2026 with no deviations), alongside registries and real-world data collection for longer-term follow-up. Sponsors design their own studies, see their own data in real time, and keep it when the study ends. ISO 27001 and SOC 2 Type II certified.
What the two look like together
The simplest way to describe the partnership is a division of labour.
Patient Watch handles the patient: enrolment in clinic, engagement, reminders, and the PROMs themselves. Ledidi handles the evidence: clinician-entered data, device and safety data, monitoring, audit trail, analysis and the exports that go into the technical file. Patient-reported data collected in Patient Watch can be brought into the same Ledidi study or registry as the clinical record, linked at patient level, so a sponsor ends up with one dataset rather than two.
In practice, that means a medtech company can run a PMCF programme where the surgeon enrols the patient in clinic, the patient reports from home, and the regulatory team works from a single validated record, without asking any of those three people to do more admin than they do today.
It also means each of us can be honest about scope. If a company needs a structured, clinician-enrolled PROMs programme, Patient Watch is the right answer and we will say so. If a company needs a validated EDC or a registry, Patient Watch will point them to us. The referral runs both ways, and neither of us is trying to be the other.
A word from Patient Watch
"Clinical trials technology is ludicrously slow and unnecessarily complicated. Patient Watch is built to minimise friction when recruiting patients, and capturing their progress. Ledidi has done the same for research. In combination, Ledidi and Patient Watch can facilitate a new era of data collection which is fast, simple and effective."
Who this is for
If you are a device or diagnostics manufacturer with PMCF, PMS or real-world evidence obligations and you are currently meeting them with survey tools and email, this is the partnership we built for you. PMS isn’t just a compliance tick box — it’s a route to real world evidence and most teams don’t realise the value they are missing. We help companies realise this potential.
If you are a CRO or regulatory consultancy designing post-market programmes for clients, it gives you a stack you can recommend without having to build or own it: a validated EDC for the clinical and safety data, and a PROMs layer that patients actually complete. Neither Ledidi nor Patient Watch replaces the CRO; both are built to work alongside one, and several of our partners already do.
It is also relevant to clinicians and clinical teams who want their patients’ outcomes to count towards evidence rather than sit in a filing cabinet.
You can find Patient Watch at https://patient.watch/. To talk to us about a joint study, get in touch or book a demo.