Tissue Viability Imaging – Microcirculation and other Skin Parameters

Welcome to the WheelsBridge website. We develop, manufacture and bring to market innovative systems for skin assessment. We further work in close collaboration with our clients in product development projects.

Tissue Viability Imager (TiVi) quantifies what can be observed by the naked eye and takes subjectivity out of skin testing.

The patented TiVi700 technology combines polarization spectroscopy with advanced image processing but is still versatile and easy to use.

Whether you work with skin care, cosmetics, textiles, drug development, microvascular research, occupational medicine or medical research, the TiVi700 Tissue Viability Imager will increase your productivity by automatically visualizing and quantifying skin erythema and blanching as well as many other important skin parameters.

TiVi700 is the most sophisticated version of the TiVi technology designed for demanding microcirculation research applications.


 TiVi8000 Micro  – is a simplified hand-held version intended for rapid screening of changes in skin microcirculation.

  Download Pamphlet. Download Manual.

TiVi700 now also with integrated TiVi video (frame rate up to 50 fps at resolution 1250×700 pixels).100% free from movement artifacts.  Suitable for investigation of microcirculation in moving objects.

Click here to download demo video.

Click here to download our Product Sheets with Reference List!

Click on an item below to download the manuals.

TiVi701 – Camera  Captures photos and videos.

TiVi700 – Analyzer Basic analysis of photos and videos.

Toolboxes now available:

TiVi60 – Skin Damage Visualizer Investigates skin vascular damage caused by use of aggressive chemicals or vibrating tools.

TiVi70 – Skin Colour Tracker Displays alterations in local skin appearance by tracking its colour changes.

TiVi80 – Spot Analyzer  Observer-independent assessment of spot erythema intensity and extension.

TiVi90 – Wrinkle Analyzer  Observer-independent assessment of wrinkle appearance.

TiVi95 – Surface Analyzer  Observer-independent assessment of cellulite appearance.

TiVi97 – Pigment Analyzer  Automatic analysis of local pigmentation.

TiVi98 – Microstructure Analyzer – Investigates miniature structures such as hair and stubble elements.

TiVi101 – Sweat Gland Activity Analyzer –  For analysis of dynamic sweat gland activity.

TiVi102 – Nevus  Analyzer Observer-independent assessment of nevus and other skin lesions.  

TiVi103 – Wound Analyzer  Observer-independent analysis of wounds and the tissue repair process.

TiVi104 – Stubble Analyzer  Observer-independent analysis of stubble elements and skin irritation.  

TiVi106 – Oxygen Mapper  Observer-independent analysis of trends in oxy- and deoxy-haemoglobin.


Automatic capturing of up to 12 images of the microcirculation per minute (photo-mode).
Automatic capturing of up to 50 frames per second (video-mode).
Presentation of high resolution 2D microcirculation colour maps.
Statistical image analysis in batch mode.
Time compressed review of microvascular events using video-clips.
Wizard assistance for increased image processing productivity.
Integrated Libraries and Trend monitors.
Interaction with other software packages.
Small and portable design.
Dual camera operation (optional).
Laser Pointer Distance Meter (optional).
TiVi Magnifier for lateral resolution of 5 micrometers per pixel (optional).
DropData for effortless and rapid export of image data to tables and spreadsheets.
WordPad linked to every photo for adding editable comments.
Project Organizer for recording and tracking individual test subject data.
Runs on Windows 7,  Windows 8 and Windows 10.

More about Features


No injections, contrast agents or even skin contact necessary.
Instant image capturing.
Unaffected by movement artifacts.
Ease-of-use resulting in increased productivity in skin testing.
No influence on the microcirculation or skin under study.
No calibration necessary.

More about Benefits


Skin care products, cosmetics and textiles development & evaluation.
Skin testing including irritation grading and patch testing.
Quantification of erythema and blanching.
Drug development including use of iontophoresis.
Microvascular research.
Occupational medicine.
Other skin parameter assessment.

More about Applications