Mercury sphygs must be handled with care due to the risk of toxic effects when mercury is spilt. Health and safety measures must also be in place to deal with spills appropriately. Increasing concerns about mercury contamination have led many people to look for a mercury alternative.
The difficulty has been finding an accurate, reliable alternative and concerns have been expressed by many experts about the replacement of the mercury sphyg in clinical practice with potentially less accurate devices.
Overcoming problems associated with other types of sphygmomanometer: it is non‑toxic, robust and most importantly, automatically self-calibrates to zero when switched on, thus ensuring reliable accuracy. The traditional mercury display is replaced with LEDs clearly displaying pressure in steps of 2 mmHg, and the clinically important cuff pressure deflation rate is indicated.
Shown to be compliant with the US standard for non-automated sphygmomanometers, ANSI/AAMI SP9:1994, and has been approved by the FDA (K040410). It has also been shown to be compliant with the European standards BS EN ISO 81060-1 and BS EN 1060-3.