Aesculap Ag

Oliver Fugger

Christoph Rothweiler

Raimund Hibst

Detlef Russ

Christian Huber

Dieter Weisshaupt

Anton Keller

Stefan Eick

Thomas Maser

Sebastian Langen

Alwin Kienle

Florian Foschum

A method for determining a switch-off time of a medical instrument includes measuring the duration for which the temperature of a tissue is above 85° Celsius, preferably above 95° Celsius, calculating, preferably online, the mean temperature from the first time when 85° Celsius, preferably 95° Celsius is reached, measuring and/or calculating the energy input until 85° Celsius, preferably 95° Celsius, and preferably below 110° Celsius, preferably below 100° Celsius is reached, calculating a parameter SP, which links the above mentioned results, and switches off at a predetermined value. The method can be practiced with a medical instrument as well as an application and a storage medium.

Device and method for determining a switch-off time of a medical instrument

A device and a method for measuring temperature. At least one illumination device emits light with an illumination spectrum into tissue. At least one detector receives the diffuse reflection of the light with a remission spectrum from the tissue. The detector converts the remission spectrum into a detector signal. The detector signal is sent to a computing unit that calculates a remission spectrum from the detector signal. The computing unit calculates an absorption spectrum of the tissue by comparing the illumination spectrum with the remission spectrum, calculates at least one absorption maximum from the absorption spectrum, and calculates a temperature in the tissue by comparing the absorption maximum with at least one reference.

Device and method for measuring tissue temperature

A method for measuring temperature includes emitting light with an illumination spectrum into a tissue with at least one illumination, receiving the remission of light with a remission spectrum from the tissue using at least one detector, converting the remission spectrum into a detector signal, sending the detector signal to a calculating unit, calculating a first theoretical remission spectrum based on a solution for describing the propagation of light in the tissue with the calculating unit, assuming estimated volume fractions of the individual tissue components, adapting the theoretical remission spectrum to the measured remission spectrum, and calculating at least one volume fraction of a tissue component from the remissions spectrum using a minimization algorithm, which is used by the calculating unit to adapt the theoretical remission spectrum to the measured remission spectrum using variations in the volume fractions of the individual tissue components which are present in the tissue.

Device and method for tissue identification

In order to provide a temperature sensor or a temperature measuring apparatus having a temperature sensor, which enables direct temperature measurement, in particular even during treatment, in particular even with HF surgical devices, it is proposed that the temperature sensor includes a sensor element with a medium which can be excited to luminescence, in particular fluorescence, and an optical waveguide which is optically connected to the sensor element and is intended to supply light to the medium at an excitation wavelength and/or to pick up and conduct light at a luminescence wavelength of the medium which can be excited to luminescence.

Temperature sensor, temperature measuring device and medical engineering systems comprising a temperature sensor or a temperature measuring device

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Ulm, Germany

Oliver Fugger