US Patent 11224415 Tissue retractor

A retractor system for enabling access to a surgical site is disclosed. The retractor system may include a primary retractor assembly configured to open and close a first arm and a second arm along a first path of travel. The primary retractor assembly may include a handle assembly having first and second handles configured to open and close the first and second arms, and the first and second arms may be operably coupled to first and second blades, respectively. The retractor system may further include a secondary retractor assembly configured to couple and uncouple with the primary retractor assembly and independently extend and contract a third arm and optionally a fourth arm. The third arm and optional fourth arm may be operably coupled to third and fourth blades, respectively. The inclination of each blade may be independently adjusted and each arm may also be independently moved.