Water-cooled flexible microwave ablation probe
Summary
The USPTO granted patent US12594120B2 to COSWAVE MEDICAL INC. for a water-cooled flexible microwave ablation probe designed for surgical ablation procedures. The probe features a coaxial water cooling system with inlet and outlet channels that circulate cooling water through the probe cavity to cool the feed cable and reflector. The patent includes 13 claims covering the flexible elongated water tube design and coaxial tuning cavity configuration.
What changed
USPTO issued patent US12594120B2 granting COSWAVE MEDICAL INC. exclusive intellectual property rights to a water-cooled flexible microwave ablation probe for surgical applications. The invention comprises a feed cable, antenna with radiator/reflector/dielectric materials, outer sheath, and a flexible elongated water tube coaxially inserted to form inlet and outlet cooling channels. The cooling water circulates through the probe cavity to manage thermal output during ablation procedures.
Medical device manufacturers developing microwave ablation technology should assess whether their products infringe on the 13 claims of this patent before market entry. Healthcare providers utilizing microwave ablation procedures may see limited competitive alternatives for water-cooled probe technology, as the patent holder maintains exclusivity over this specific cooling configuration for the term of the patent.
What to do next
- Monitor for patent expiry date (generally 20 years from filing)
- Conduct freedom-to-operate analysis before developing similar products
- Review claims for potential licensing opportunities
Archived snapshot
Apr 8, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Water-cooled flexible microwave ablation probe
Grant US12594120B2 Kind: B2 Apr 07, 2026
Assignee
COSWAVE MEDICAL INC.
Inventors
Peng Zhang, Ting Yang, Yixin Yang
Abstract
Examples of a water-cooled microwave ablation probe are disclosed. The probe comprises a feed cable and an antenna with a radiator, a reflector and a dielectric material therein between. An outer sheath with a flexible tubular body encases the feed cable and portion of the antenna. A front-end of the outer sheath is connected to the antenna such that the radiating head extends out of the outer sheath. The outer sheath is bonded to a rear section of the radiator and portion of the reflector defining a coaxial tuning cavity of the antenna. A flexible elongated water tube is coaxially inserted in the outer sheath forming an inlet channel in the water tube and outlet channel in the space between the water tube and the outer sheath. The cooling water circulates in the probe cavity cooling down the feed cable and the reflector.
CPC Classifications
A61B 18/1815 A61B 2018/00023 A61B 2018/00035 A61B 2018/00083 A61B 2018/00178 A61B 2018/00577 A61B 2018/1823 A61B 2018/1838 A61B 2018/1846 A61B 2018/1853 A61B 2018/1861 A61B 2018/1892
Filing Date
2024-03-08
Application No.
18599959
Claims
13
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Source
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