CHAPTER 4 Abdominal self-retaining retractors are retractors that do not require a person to hold them in the proper position. Once the surgeon places the retractor, and sets the racket, nut, or universal joint, the retractor stays open until released. 4-3 Top to bottom: Bookwalter retractor: segmented parts (2 segmented half-circles, medium; 2 segmented straight extensions) placed together with 4 locking screws; 1 vertical extension bar; 1 Kelly retractor blade with ratchet mechanism attached; 2 post couplings.
Abdominal Self-Retaining Retractors