Masimo (MASI)

http://www.masimo.com/company/investors/investor-relations/

A manufacturer of non-invasive medical monitoring devices. One of the dominant players in medical monitoring devices. You probably have heard of pulse-oximetry (the gadget that your nurse puts on your finger to measure your oxygen level in blood) and it is absolutely ubiquitous in the US. Relentless innovation and operates in a niche market with high barrier of entry (patents are fiercely protected).