Testing the function of a flexible photodetector (FlexOS) for monitoring microcirculation using a vascular occlusion test

Testing the function of a flexible photodetector (FlexOS) for monitoring microcirculation using a vascular occlusion test - FlexOS_Test

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00039583

Enrollment

Registered

2026-03-10

Start date

2026-03-10

Completion date

Unknown

Last updated

2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Circulatory disorders

Interventions

Group 1: Healthy subjects Attachment of probes (FlexOS, laser Doppler probe, and pulse oximeter) Attachment of blood pressure cuff => vascular occlusion test (VOT): inflating the blood pressure cuff t

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Healthy subjects, male and female, at least 18 years old, free of pre-existing conditions, not pregnant.

Exclusion criteria

Exclusion criteria: <18 years old, known pre-existing condition, pregnancy.

Design outcomes

Primary

Measure	Time frame
FlexOS detects changes in microcirculation that are provoked by the vascular occlusion test. The light source emits light with a wavelength of 530 nm. The superficial capillaries reflect this light. The reflected portion (photocurrent) is captured by the detector and transmitted as a current response to the measurement system. The change in the current response reflects the change in microcirculation.	—

Measure

Time frame

FlexOS detects changes in microcirculation that are provoked by the vascular occlusion test. The light source emits light with a wavelength of 530 nm. The superficial capillaries reflect this light. The reflected portion (photocurrent) is captured by the detector and transmitted as a current response to the measurement system. The change in the current response reflects the change in microcirculation.

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Countries

Germany

Contacts

Public ContactKatharina Effenberger-Neidnicht

Institut für Physiologische Chemie, Universitätsklinikum Essen

katharina.effenberger-neidnicht@uni-due.de02017234103

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Jun 11, 2026