SurgiTwin
K250290Twinsight · cleared 2025-08-29 · product code LLZ · Radiology
Premarket evidence — what FDA accepted
source quote (p.6)
“SurgiTwin is a semi-automated Software as a Medical Device (SaMD)”
source quote (p.14)
“The machine learning (ML) model incorporated into SurgiTwin was developed, trained, tested, and validated for its performance.”
source quote (p.14)
“Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions”
Validation studies (6)
Standalone
sample size not stated
endpoints: Mean DSC > 0.95; Mean voxel based AHD < 1.0mm; 5th percentile of the DSC > 0.9; 95th percentile of the boundary based HD 95 < 2.5mm
standards: Content of Premarket Submissions for Device Software Functions, Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions, Applying Human Factors and Usability Engineering to Medical Devices, Technical Performance Assessment of Quantitative Imaging in Radiological Device Premarket Submissions, Off-The-Shelf Software Use in Medical Devices
Standalone
sample size not stated
endpoints: predefined clinical acceptance criteria
standards: Content of Premarket Submissions for Device Software Functions, Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions, Applying Human Factors and Usability Engineering to Medical Devices, Technical Performance Assessment of Quantitative Imaging in Radiological Device Premarket Submissions, Off-The-Shelf Software Use in Medical Devices
Standalone
sample size not stated
endpoints: predefined clinical acceptance criteria for all measurements
standards: Content of Premarket Submissions for Device Software Functions, Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions, Applying Human Factors and Usability Engineering to Medical Devices, Technical Performance Assessment of Quantitative Imaging in Radiological Device Premarket Submissions, Off-The-Shelf Software Use in Medical Devices
Standalone
sample size not stated
endpoints: accuracy and clinical acceptability of the default implant placement algorithm; All acceptance criteria were met.
standards: Content of Premarket Submissions for Device Software Functions, Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions, Applying Human Factors and Usability Engineering to Medical Devices, Technical Performance Assessment of Quantitative Imaging in Radiological Device Premarket Submissions, Off-The-Shelf Software Use in Medical Devices
Standalone
sample size not stated
endpoints: clinical acceptability of the osteophyte removal function; All acceptance criteria were met.
standards: Content of Premarket Submissions for Device Software Functions, Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions, Applying Human Factors and Usability Engineering to Medical Devices, Technical Performance Assessment of Quantitative Imaging in Radiological Device Premarket Submissions, Off-The-Shelf Software Use in Medical Devices
Standalone
sample size not stated
endpoints: All acceptance criteria were met.
standards: Content of Premarket Submissions for Device Software Functions, Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions, Applying Human Factors and Usability Engineering to Medical Devices, Technical Performance Assessment of Quantitative Imaging in Radiological Device Premarket Submissions, Off-The-Shelf Software Use in Medical Devices
Reported performance (2 observations)
source quote (p.15)
“Mean DSC > 0.95”
source quote (p.15)
“5th percentile of the DSC > 0.9”
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
- adverse_event_inflection
MAUDE adverse-event reports for product code LLZ: 295 in the 12 months ending 2026-06, vs a 37.7/12mo average over the prior 3 windows (+683%). Code-level count — reports are not attributed to this specific device.
first seen 2026-07-08 · openFDA /device/event.json count=date_received product_code=LLZ
- recall_reason_pattern
Software/algorithm-related recall in product code LLZ (GE Medical Systems SCS, initiated 2026-05-08): "GE HealthCare has become aware of a context synchronization issue in AW Server 3.2 ext. 6.5. When a user selects a patient or exam in the AW Server Web Client worklist and launches" Recalling firm is another firm in the same product code.
first seen 2026-07-08 · recall res_event_number:99042
- recall_reason_pattern
Software/algorithm-related recall in product code LLZ (PHILIPS MEDICAL SYSTEMS NEDERLAND B.V. Veenpluis 4-6 Best Netherlands, initiated 2026-03-05): "Potential that mis-ordered frames in Vue Motion during dynamic cine runs may cause images frames to display out of sequence." Recalling firm is another firm in the same product code.
first seen 2026-07-08 · recall res_event_number:98520
- recall_reason_pattern
Software/algorithm-related recall in product code LLZ (GE Medical Systems, LLC, initiated 2026-01-30): "There is a potential cybersecurity vulnerability affecting certain versions of Centricity Universal Viewer. User login credentials may be exposed on the local client workstation, w" Recalling firm is another firm in the same product code.
first seen 2026-07-08 · recall res_event_number:98428
- recall_reason_pattern
Software/algorithm-related recall in product code LLZ (Focalyx Technologies, LLC., initiated 2025-12-23): "Software device that is an accessory for image-guided interventional and diagnostic procedures involving prostate has accessories that may not function properly with Windows 10, wh" Recalling firm is another firm in the same product code.
first seen 2026-07-08 · recall res_event_number:98137
- recall_reason_pattern
Software/algorithm-related recall in product code LLZ (DICOM Grid, Inc., initiated 2025-11-18): "Software intended to aid in diagnosing conditions, planning treatments, visualizing anatomical structures has a bug that, if all of following are met: Viewing images in InteleShare" Recalling firm is another firm in the same product code.
first seen 2026-07-08 · recall res_event_number:97993
- …and 20 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).