Roller Pump Calibration Method and Perfusion System, LivaNova
Summary
LivaNova Deutschland GmbH has filed USPTO patent application US20260108720A1 for a roller pump calibration method and extracorporeal perfusion system with an automatic calibration mode. The application, filed on October 22, 2024, was published on April 23, 2026, with inventors Friedemann Schubert and Philipp Löffler listed.
About this source
USPTO classification A61M covers devices that introduce or withdraw fluids from the body: infusion pumps, catheters, syringes, inhalers, wound drainage, dialysis equipment, and fluid-handling microfluidics. Every newly published application in A61M lands in this feed, around 205 a month. Applications publish 18 months after filing. Watch this if you compete in infusion therapy or drug delivery, file freedom-to-operate analyses for medical device startups, scout acquisition targets in cardiovascular or respiratory devices, or track hospital R&D arms that are quietly patenting clinical innovations.
What changed
LivaNova Deutschland GmbH filed patent application US20260108720A1 covering a roller pump calibration method for use with extracorporeal perfusion systems. The method involves positioning tubing within a pump raceway, rotating the rotor with rollers in an innermost zero-flow position, then radially extending the rollers until measurable flow is detected, storing a lower flow limit, continuing extension until flow stabilizes, and storing an upper flow limit. The system includes a control unit with an automatic calibration mode.
Medical device manufacturers developing roller pump-based perfusion equipment should monitor the prosecution of this application, as the disclosed calibration approach may inform future product design for cardiopulmonary bypass and similar extracorporeal circulation systems.
Archived snapshot
Apr 23, 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.
ROLLER PUMP FOR USE WITH A PERFUSION SYSTEM AND ASSOCIATED METHODS
Application US20260108720A1 Kind: A1 Apr 23, 2026
Assignee
LivaNova Deutschland GmbH
Inventors
Friedemann Schubert, Philipp Löffler
Abstract
A method of calibrating a roller pump includes positioning a tubing within a raceway of a roller pump, activating the pump to rotate a rotor relative to the raceway with first and second rollers disposed in an innermost position corresponding to zero flow, actuating an electronic actuator to move the first and second rollers radially outward until a flow rate greater than zero is measured, storing a lower flow limit within a control unit corresponding to a first position at which the flow rate was zero, actuating the electronic actuator to move the first and second rollers radially outward from the first position until the flow rate stops changing, and storing an upper flow limit within the control unit corresponding to a second position at which the flow rate stopped changing. An extracorporeal perfusion system includes a control unit having an automatic calibration mode.
CPC Classifications
A61M 60/279 A61M 60/113 A61M 60/38 A61M 60/441 A61M 60/546 A61M 2205/702
Filing Date
2024-10-22
Application No.
18923073
Parties
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