| Investor Name | Invest Money | Lead Investor | Propotion |
|---|
| Announced Date | Round | Money Raised | Investors | |
|---|---|---|---|---|
| Jun 6, 2005 | Series A | $ 18.10M | Detail | |
| Feb 16, 2007 | Post-IPO Equity | $ 30.90M | Essex Woodlands Healthcare Partners,Henderson Global Investors,etc. | Detail |
| May 3, 2006 | Post-IPO Equity | $ 37M | Cycad Group,Emerging Technology Partners,etc. | Detail |
| Nov 11, 2005 | IPO | 0 | Detail |