A Diagnostics & Imaging Week

Aspect Medical Systems (Norwood, Massachusetts) said it has repurchased, in privately negotiated transactions, an aggregate of $7 million face value of its 2.5% convertible senior notes due 2014, for aggregate consideration of about $3.8 million in cash, including accrued interest. In June 2007, Aspect issued $125 million of its 2.5% notes. As a result of these and prior repurchases, $58 million of the 2.5% notes remain outstanding.

Aspect develops brain-monitoring technology. To date, its Bispectral Index (BIS) technology has been used to assess nearly 31 million patients and has been the subject of over 3,100 published articles and abstracts, the company said.