---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-25-035346"
form_type: "8-K"
ticker: "NUWE"
cik: "0001506492"
company_name: "Nuwellis, Inc."
filed_at: "2025-09-18T23:59:59+00:00"
generated_at: "2026-05-17T06:14:24.992015+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Nuwellis announces US patent issuance for hemolysis sensor technology supporting pediatric device Vivian

## Summary
- US Patent No. 12,415,021 issued September 16, 2025, for hemolysis sensors with extracorporeal blood filtration systems.
- Patent covers detection and localization of red blood cell destruction in ultrafiltration and CRRT circuits.
- Intellectual property supports Nuwellis' pediatric device Vivian and future platform innovation.

## SEC filing metadata
- accession: 0001140361-25-035346
- form_type: 8-K
- ticker: NUWE
- cik: 0001506492
- company_name: Nuwellis, Inc.
- filed_at: 2025-09-18T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1506492/000114036125035346/0001140361-25-035346-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1506492/000114036125035346/ef20055643_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-25-035346
- JSON: https://secwatch.observer/filing/0001140361-25-035346.json
- Plain text: https://secwatch.observer/filing/0001140361-25-035346.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.