EPIQ Series Diagnostic Ultrasound System; Affiniti Series Diagnostic Ultrasound System
K243793Philips Ultrasound LLC · cleared 2025-05-21 · product code IYN · Radiology
Premarket evidence — what FDA accepted
source quote (p.7)
“The R-Trigger algorithm software feature on Philips EPIQ and Affiniti Ultrasound System is intended to support detection of R-wave peak (R-trigger) as an input to certain TTE clinical applications, initially including AutoStrain LV, AutoEF, 2D Auto LV (collectively referred to as "AutoStrain"), and AutoMeasure applications. The R-trigger algorithm is planned to be implemented as workflow enhancement for transthoracic clinical applications on EPIQ and Affiniti Ultrasound Systems in the VM13 software release. There are no hardware changes to the EPIQ and Affiniti systems due to change to the introduction of the R-Trigger software application.”
source quote (p.11)
“The R-Trigger AI software feature on Philips EPIQ and Affiniti Ultrasound System is intended to support detection of R-wave peak (R-trigger) as an input to AutoStrain and AutoMeasure applications, as well as other cardiac clinical applications.”
source quote (p.11)
“From a user perspective, their only difference is that they will be able to use certain cardiac clinical applications on acquired clips which do not have a usable ECG signal in the subject device. Otherwise, there are not able changes visible to the user as both methods work in the background.”
Validation studies (1)
Retrospective clinical
n=3,964 patients
endpoints: R-trigger algorithm performance in isolation; Clinical impact of R-Trigger algorithm outputs on AutoMeasure applications; Clinical impact of R-Trigger algorithm outputs on AutoStrain applications
standards: IEC 62304 Medical device software - Software life cycle processes, 2006 + A 2015, ISO 14971 Medical devices- Application of risk management to medical devices, 2019
Reported performance (0 observations)
FDA source did not state a quantitative performance metric — non-reporting is itself the signal.
Each value carries its own analysis unit and task — never compare or pool across devices. Source: 510(k) summary PDF.
Predicate network
Postmarket — what happened after clearance
- recall_reason_pattern
Software/algorithm-related recall in product code IYN (Philips Ultrasound, LLC, initiated 2025-10-31): "Ultrasound system compatibility issues with Apple devices running iOS 18 may cause a failure to perform live imagining." Recalling firm matches this device's applicant.
first seen 2026-07-08 · recall res_event_number:97843
- re_clearance
The FDA AI/ML device list shows a newer 510(k) K253595 (decision 2026-03-27) from Philips Ultrasound, LLC for a matching device line ("EPIQ Series Diagnostic Ultrasound System, Affiniti Series Diagnostic Ultrasound System") — a new clearance for the same line is a change event.
first seen 2026-07-08 · k_number:K253595
- re_clearance
The FDA AI/ML device list shows a newer 510(k) K251651 (decision 2025-10-09) from Philips Ultrasound, LLC for a matching device line ("EPIQ Series Diagnostic Ultrasound System; Affiniti Series Diagnostic Ultrasound System") — a new clearance for the same line is a change event.
first seen 2026-07-08 · k_number:K251651
- re_clearance
The FDA AI/ML device list shows a newer 510(k) K251455 (decision 2025-07-24) from Philips Ultrasound LLC for a matching device line ("EPIQ Series Diagnostic Ultrasound System; Affiniti Series Diagnostic Ultrasound System") — a new clearance for the same line is a change event.
first seen 2026-07-08 · k_number:K251455
- re_clearance
The FDA AI/ML device list shows a newer 510(k) K250886 (decision 2025-06-18) from Philips Ultrasound LLC for a matching device line ("EPIQ Series Diagnostic Ultrasound Systems; Affiniti Series Diagnostic Ultrasound Systems") — a new clearance for the same line is a change event.
first seen 2026-07-08 · k_number:K250886
- recall_reason_pattern
Software/algorithm-related recall in product code IYN (GE Medical Systems, LLC, initiated 2025-09-18): "The Ultrasound-Guided Attenuation Parameter (UGAP) measurement data may display inaccurate values representing liver steatosis. This could potentially lead to inappropriate clinica" Recalling firm is another firm in the same product code.
first seen 2026-07-08 · recall res_event_number:97726
- …and 2 more.
Recall and MAUDE counts are product-code-level (reports aren't reliably attributable to one device). Signals are descriptive observables with sources — never a judgment that the device is unsafe or drifting. Snapshot 2026-07-08.
Reimbursement — how devices like this got paid
Not yet tracked — no payment pathway indexed for this clearance (the reimbursement corpus is a growing seed set).