On top of $800m initially, Medtronic will pay performance fees to acquire portfolio company Ardian.

Boston Scientific said as it had owned 14% of Sadra Medical since 2006 it would pay $193m in cash initially and up to the same amount again in performance fees for the rest of the company.

Lilly Ventures and Amgen Ventures join consortium investing $36.5m in healthcare company Sutro Biopharma.

Kaiser Permanente Ventures-backed AcelRx Pharmaceuticals preps its $86.25m flotation.

Lilly Ventures acts as lead investor for Cerulean Pharma's $24m C round.

Venture capital firm MPM Capital leads $20m series B round for Aires Pharmaceuticals as Novartis takes licensing option.

Ikaria expected to sell eight rather than 10 million shares at its Nasdaq flotation.

Google-backed 23andMe gains Johnson & Johnson Development Corporation as a new investor.

Fidelity Biosciences joins consortium for RedHill Biopharma.

Eugene Starr joins Vascular Pathways as executive president.