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Oxygen-Enrichment Therapy Control System Based on Microvascular Resistance Feedback

Favicon for changeflow.com ChangeBridge: EPO Bulletin - Medical Devices (A61M)
Published March 25th, 2026
Detected April 2nd, 2026
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Summary

The European Patent Office published patent application EP4489810A2 by ZOLL Circulation, Inc. for a system and method controlling oxygen-enrichment therapy based on microvascular resistance feedback. The technology measures microvascular resistance to dynamically adjust oxygen delivery parameters. The patent is classified under A61M medical device categories and designates all EPO contracting states.

What changed

The EPO published European patent application EP4489810A2 for a system and method that controls oxygen-enrichment therapy using microvascular resistance feedback, invented by ZOLL Circulation, Inc. inventors Creech, Myrick, Helkowski, Shen, Perumal, and Freeman. The system adjusts oxygen delivery based on real-time microvascular resistance measurements, classified under IPC codes A61M 1/32, A61B 5/021, and related diagnostic/therapeutic categories. Designated states include all major EPO contracting states.

No regulatory compliance action is required from this patent publication. Medical device manufacturers and healthcare providers should note this intellectual property development for patent landscape awareness and freedom-to-operate considerations. The patent grants exclusionary rights in designated EU states but imposes no reporting, filing, or operational compliance obligations.

Source document (simplified)

← EPO Patent Bulletin

SYSTEM AND METHOD FOR CONTROLLING OXYGEN-ENRICHMENT THERAPY BASED ON MICROVASCULAR RESISTANCE FEEDBACK

Publication EP4489810A2 Kind: A2 Mar 25, 2026

Applicants

ZOLL Circulation, Inc.

Inventors

CREECH, Jeffrey Lance, MYRICK, Stephen Elwood, HELKOWSKI, Richard A., SHEN, Fred, PERUMAL, Ramu, FREEMAN, Gary A.

IPC Classifications

A61M 1/32 20060101AFI20260216BHEP A61B 5/021 20060101ALI20260216BHEP A61B 5/026 20060101ALI20260216BHEP A61B 5/05 20210101ALI20260216BHEP A61B 5/145 20060101ALI20260216BHEP A61M 1/36 20060101ALI20260216BHEP

Designated States

AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR

View original document →

Named provisions

IPC A61M 1/32 - Oxygen-Enrichment Therapy IPC A61B 5/021 - Cardiovascular Measurement IPC A61B 5/026 - Blood Flow Measurement

Source

Analysis generated by AI. Source diff and links are from the original.

Classification

Agency
EPO
Published
March 25th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
EP4489810A2

Who this affects

Applies to
Medical device makers Healthcare providers
Industry sector
3345 Medical Device Manufacturing
Activity scope
Medical Device Technology Therapy Systems
Geographic scope
European Union EU

Taxonomy

Primary area
Medical Devices
Operational domain
Legal
Topics
Healthcare Intellectual Property

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