Heraeus Medical Bone Cement Mixing Device with Depressurization US12605196B2
Summary
The USPTO granted Patent US12605196B2 to Heraeus Medical GmbH on April 21, 2026, covering a method and device for mixing bone cement with depressurization. The invention uses a cartridge with a drive piston and a central piston permeable to gases and monomer liquid but impermeable to cement powder. The method expels residual gases through drive piston movement, displaces gases between powder particles with inflowing monomer liquid, and depressurizes the cartridge cavity by partially removing monomer liquid. The patent contains 14 claims directed to both the method and the device.
What changed
The USPTO issued Patent US12605196B2 to Heraeus Medical GmbH on April 21, 2026, covering a method and device for mixing bone cement using a depressurization process. The patent claims a cartridge-based mixing system with a drive piston and a central piston designed to be gas- and monomer-permeable while remaining impermeable to cement powder. The mixing method involves expelling residual gases through piston movement, displacing inter-particle gases with monomer liquid, and depressurizing the cavity by removing excess monomer liquid.
Competitors developing bone cement mixing devices should review this patent to assess potential design-around needs or licensing opportunities. Medical device manufacturers in the orthopaedic and surgical space should ensure their product development activities do not encroach on the 14 claims covering the depressurization mixing method and cartridge configuration.
Archived snapshot
Apr 21, 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.
Method and device for mixing bone cement with depressurization
Grant US12605196B2 Kind: B2 Apr 21, 2026
Assignee
Heraeus Medical GmbH
Inventors
Sebastian Vogt, Thomas Kluge
Abstract
One aspect is a method for producing a bone cement from monomer liquid and cement powder using a depressurization device. The method is performed using a device comprising a cartridge having a drive piston, and a central piston being permeable to gases and the monomer liquid and impermeable to the cement powder and being arranged between the drive piston and a cartridge head. The method comprising the steps of expelling residual gases into the surroundings of the device by means of the movement of the drive piston; displacing gases between the powder particles with the inflowing monomer liquid; and depressurizing a cavity of the cartridge, by partially removing the contained monomer liquid. The invention also relates to such a device for mixing a bone cement, with a depressurization device.
CPC Classifications
A61B 17/8822 A61B 17/8827 A61B 17/8833
Filing Date
2022-02-25
Application No.
17681217
Claims
14
Parties
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