USPTO Patent Grant: Dialysis Machine Dialyzer Identification

ChangeBridge: Patent Grants - Medical Devices (A61M)

Published March 24th, 2026

Detected March 25th, 2026

Summary

The USPTO has granted a patent (US12582755B2) to Fresenius Medical Care Deutschland GmbH for a dialysis machine apparatus and method that identifies a dialyzer. The invention uses fluid filling and pressure measurements to identify the dialyzer by comparing data to predefined characteristics.

View original document View source feed page

What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12582755B2 for a dialysis machine. The patent, assigned to Fresenius Medical Care Deutschland GmbH, describes an apparatus and method for identifying a dialyzer. This system utilizes means for filling the dialyzer with fluid and determining the filling amount and characteristic pressure within the filled region. An evaluation device compares this data against predefined curves or values to output a signal indicating identification.

This patent grant represents a new intellectual property for a specific medical device technology. While it does not impose new regulatory obligations on manufacturers or healthcare providers, it signifies innovation in dialysis machine design. Companies in the medical device sector, particularly those manufacturing dialysis equipment, should be aware of this patent for potential licensing or competitive landscape considerations. The filing date was July 24, 2020, and the grant date is March 24, 2026.

Source document (simplified)

← USPTO Patent Grants

Dialysis machine comprising an apparatus for identifying a dialyzer and method of identifying a dialyzer

Grant US12582755B2 Kind: B2 Mar 24, 2026

Assignee

FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH

Inventors

Alexander Frenzel

Abstract

The present invention relates to a dialysis machine having a dialyzate circuit and having a dialyzer, wherein the dialysis machine has an apparatus for identifying the dialyzer; wherein the apparatus has means for filling the dialyzer with fluid and has means for determining the filling amount of fluid that is filled into the dialyzer; and wherein the apparatus furthermore has means for determining the pressure that is characteristic for the pressure in the filled region of the dialyzer, wherein an evaluation device is provided that is configured to put the measured filling amount into relationship with the measured pressure and to compare it with a predefined characteristic curve or with a predefined characteristic value, with the evaluation device furthermore being configured to output a signal that depends on whether the relationship determined coincides with the predefined characteristic curve or with the predefined characteristic value.