Method and device for the objective determination of capillary refill behavior on a human body surface

US11839484B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Uwe Vogel · Munich, DE
• Bernd Richter · Dresden, DE
• Torsten Richter · Darmstadt, DE

Key dates

• Filing date: May 28, 2021
• Grant date: Dec 12, 2023
• Expiry date: Jun 25, 2042

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2562/0233
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for the objective determination of capillary refill behavior on a human body surface in which a spatially and spectrally resolved optical detection is carried out by at least one detector device (1) at a skin surface area (2) having a predefined areal size and outer contour. Subsequently a predefined pressure p constant over the skin surface area (2) is exerted over a predefined time t1; and the pressure effect is ended after expiry of this time t1. The spatially and spectrally resolved optical detection is carried out by the detector device (1) and the respective capillary refill behavior is spatially and temporally determined at a time t2 up to which at least one first threshold value of the measurement values detected simultaneously with spatial resolution has reached the measurement value that had been optically detected before the start of the pressure effect.