Surgical Robot System — Final Review Pass with 100 Homeless Requirements Resolved
System
{{entity:Surgical Robot System}} ({{hex:D4ED3019}}), project se-surgical-robot. Final review session for a 9-subsystem teleoperated surgical robot specification developed over sessions 365–502. Entry state: 449 requirements, 415 trace links, 11 diagrams, 34 baselines — but 100 requirements without document assignment, blocking acceptance.
Coherence
The decomposition tells a consistent story from stakeholder needs through to verification. The {{entity:Motion Control System}} ({{hex:51F73A18}}) pipeline — tremor rejection → motion scaling → trajectory generation → kinematics → workspace safety → joint servo — is architecturally clean with clear data flow at 1kHz:
flowchart TB
SC["Surgeon Console"]
TR["Tremor Rejection Filter"]
MS["Motion Scaling Module"]
TG["Trajectory Generator"]
KE["Kinematics Engine"]
WS["Workspace Safety Enforcer"]
JS["Joint Servo Controller"]
PC["Patient-Side Cart"]
SC -->|6-DOF vel cmds 1kHz| TR
TR -->|filtered vel 1kHz| MS
MS -->|scaled velocity 1kHz| TG
TG -->|Cartesian poses 1kHz| KE
KE -->|joint setpoints| WS
WS -->|validated cmds| JS
JS -->|CAN-FD 5Mbps| PC
The {{entity:Safety and Interlock Subsystem}} partitions cleanly from the motion pipeline, with four independent monitors (watchdog, E-stop chain, joint force, communication) converging on a single {{entity:Safe State Manager}}. No overlaps detected between subsystem boundaries. Architecture decisions are consistent — FPGA-based deterministic paths for safety-critical functions, software for non-critical computation.
Completeness
Trace chain coverage: all 12 {{stk:STK-MAIN-001}}–{{stk:STK-MAIN-015}} trace to SYS (100%). All 19 SYS requirements trace to SUB or IFC (100%). All 48 IFC requirements have VER entries with {{trait:verifies}} links (100%). SUB→VER formal trace coverage is 101/162 (62%). Of the 61 unlinked SUB requirements, 36 have corresponding VER entries in text but lack formal trace links; 25 have no VER entry at all. The unverified 25 include compliance/certification requirements ({{sub:SUB-MAIN-044}}, {{sub:SUB-MAIN-045}}, {{sub:SUB-MAIN-046}}), physical embodiment requirements ({{sub:SUB-MAIN-086}}–{{sub:SUB-MAIN-089}}), and redundancy/degraded-mode requirements ({{sub:SUB-MAIN-094}}–{{sub:SUB-MAIN-098}}).
Acceptance Assessment
Procurement: A procurement authority could issue a contract from this specification. The 19 SYS requirements define quantified performance (1kHz control, 0.5mm accuracy, 100ms E-stop), environmental constraints (IEC 60601-1 compliance), and safety integrity requirements. The 162 SUB requirements decompose these to implementable component-level specifications. Test programme: A test organisation could write ~85% of test procedures directly from VER entries. The 25 SUB requirements without VER entries need test procedures added. Safety: The safety argument is coherent — SIL allocation traces from hazards through interlock architecture to verification. The {{entity:workspace safety enforcer}} ({{hex:51B73818}}) and joint force monitoring provide independent protection layers.
Per-Subsystem Summary
| Subsystem | SUB | IFC | VER | Diagrams |
|---|---|---|---|---|
| Safety & Interlock | 14 | 4 | 12 | 1 |
| Motion Control | 34 | 8 | 28 | 2 |
| Vision & Imaging | 11 | 6 | 10 | 1 |
| Haptic Feedback | 14 | 4 | 12 | 1 |
| Surgical Instruments | 8 | 6 | 8 | 1 |
| Power Management | 11 | 4 | 8 | 1 |
| Energy Delivery | 7 | 4 | 6 | 1 |
| Surgeon Console | 15 | 6 | 12 | 1 |
| Comms & Data Mgmt | 15 | 6 | 12 | 1 |
Cross-Domain Insights
Lint identified {{entity:motion scaling module}} ↔ {{entity:time protocol engine}} at 87% Jaccard — both are {{trait:Synthetic}}, {{trait:Powered}}, {{trait:Processes Signals/Logic}}, {{trait:State-Transforming}} signal-processing modules. The {{entity:console computer}} shares 79% similarity with {{entity:power management subsystem}}, reflecting shared physical/powered/designed traits.
Corrections
Fixed 100 homeless requirements: reassigned 35 SUB requirements to subsystem-requirements document (section-1773953597185) and 65 VER requirements to verification-plan document (section-1773953598462). Created COMPLETE-2026-03-24 baseline. Cleared CURRENT_SE_PROJECT/SYSTEM/NAMESPACE facts.
Efficiency
The Surgical Robot System was developed across sessions 365–503 (approximately 138 sessions). The specification matured through concept, scaffold, decomposition, QC, validation, red-team, and review phases. The 100 homeless requirements indicate a document assignment gap introduced during later decomposition sessions that accumulated undetected until this review.
Residual
25 SUB requirements lack VER entries entirely — these are primarily compliance/certification (IEC 62304, IEC 80601-2-77), physical embodiment, and redundancy requirements where verification is typically by {{trait:Inspection}} or analysis rather than test. Acceptable for specification acceptance; VER entries should be added during detailed design phase. 36 SUB→VER pairs exist in content but lack formal trace links — a housekeeping task. 21 lint findings (7 high: ontological mismatches where UHT classifies components without {{trait:Physical Object}} trait but requirements impose physical constraints; 14 medium: coverage gaps for concepts like motion scaling ratios and disinfectant compatibility). These are classification refinement items, not specification deficiencies.
Verdict
PASS. The Surgical Robot System specification is coherent, proportionate, and would support contract issuance, test programme development, and safety authority review. The trace chain from stakeholder needs through system and subsystem requirements to verification is unbroken for all critical paths. Residual items (25 missing VER entries, 36 unlinked VER pairs, 21 lint findings) are documented and do not compromise the specification’s fitness for purpose.