Endosense has now raised $44.6m in its C round following an initial close in November from venture capital firms.

Endosense, a Switzerland-based medical device maker for irregular heartbeats, has extended its series C round by SFr4m ($4.3m) from an undisclosed “new strategic industry partner”.

Endosense has now raised $44.6m in its C round following an initial close in November from venture capital firms NGN Capital, Edmond de Rothschild Investment Partners, Neomed, Gimv, VI Partners, Sectoral Asset Management, Ysios Capital Partners and Initiative Capital Romandie.

In September 2009, Endosense raised $36m in its B round and $20m in the A…