O2C (oxygen to see)

• Perfusion of Tissue
• Capillary-Venous Oxygen Saturation
• Blood Filling of Microvessels

- a diagnostic device for non-invasive determination of oxygen supply in microcirculation of blood perfused tissues

The optical sensor is easy to handle and guarantees reproducible examinations of local oxygen supply of tissues in clinics as well as in research. The examinations are without any strain for your patient.

determines by use of a glass fibre probe:

• Blood Flow in Microcirculation
• Capillary-Venous Oxygen Saturation
• Blood Filling of Microvessels
• Blood Flow Velocity

This device makes it possible to supervise the local oxygen supply of organs and tissue.

Fields of Application:

• Abdominal surgery (Organ transplantation)
• Surgery (Wound healing)
• Dermatology (Wound healing, diabetic foot / arterial occlusive diseases)
• Diabetes (Diabetic foot / arterial occlusive diseases)
• Research (Angiogenesis)
• Vascular surgery (Flap transplantation)
• Hand surgery (Flap transplantation)
• Ear, nose, and throat medicine (Flap transplantation)
• Intensive care medicine (Gastrointestinal application / sepsis)
• Phlebology
• Plastic surgery (Flap transplantation)
• Hyperbaric medicine

With this system it is possible to diagnose:

• Hypoxia due to:
  • venous congestion
  • ischemia
  • increased metabolism (Tumour, Inflammation)
• Hyperoxia due to:
  • hyperemia
  • decreased metabolism in necrosis
• Typical Reactions:
  • inspiratory gasp

Monitoring of Energetic Metabolism of Cells

With it is possible to measure locally the amount of oxygen which is transported into the region of interest and to diagnose local oxygen consumption of an organ. O2C's novelty is monitoring the energetic metabolism of cells by measuring the oxygen uptake with an optical sensor probe. Pathological O₂-supply, which can lead to angiogenesis or cell-death and subsequently to organ failure, now can be detected in an early state by use of the new sensor system.

Monitoring of Oxygen Supply Simultaneously in Different Layers of Tissue

is a multiple channel system which makes it possible to determine perfusion quantities and oxygen values. Channel 1 records the superficial oxygen saturation of hemoglobin (e.g. of the skin), while channel 2 monitors the oxygen supply and hemoglobin values of deeper tissue (e.g. skeletal muscle), due to the extended measurement volume.

The measurement principle of the device relies on a combination of laser-Doppler-technique and tissue spectrometry. Different application at the skin, internal organs and in the intestinal tract are possible by flexible glass fibre probes .

Main Screen

The main screen is divided into the following parts, providing you with a good overview for all clinical problems:

• The toolbar, at the top of the screen, provides for fast operation of the program functions.
• The monitoring window, in the upper third of the screen, allows continuous observation of the patient for longer periods of time. They can be chosen easily with the keyboard.
• On the right are 4 windows that each display beat-to-beat signals for four different parameters: oxygen saturation, relative amount of hemoglobin, flow and blood flow velocity.
• Three windows on the bottom left allow you to monitor the signal quality in each situation. This allows the probes to be placed out of sight, e.g., in the abdomen.
• The right border of the screen displays number values for the most current measurements of the four parameters for each connected probe.
• The scale of the diagrams can be adjusted conveniently with a control button at the top left of the monitoring window.
• The digital saving display shows the current patient´s name. The digital values are saved under the name of each patient in charts that can be accessed directly by statistical or spreadsheet software.

Device Types

O2C is available in 15 variations. The variations differ in number of connected probes, the different number of channels, measuring depths of a probe and the parameters which can be recorded per channel.
A measurement channel is usually equipped both with a laser-Doppler measurement unit and with a tissue-spectrometer-unit with white light source (O2C). For the different device and technical data refer to the pdf file.