In December 2011, Aviir said it would raise up to $30m led by local drugs maker Merck's Global Health Innovation corporate venturing fund.

Aviir, a US-based heart disease monitoring company backed by local drugs maker Merck’s corporate venturing unit, has closed on a second tranche of $10m after meeting a revenue milestone and added Partners & Partners as an investor.

In December 2011, Aviir said it would raise up to $30m led by local drugs maker Merck’s Global Health Innovation corporate venturing fund.

Merck and its consortium of venture capital firms, Bay City Capital, Aberdare Ventures, and New Leaf Venture Partners, said they would…