Fig. 4

Tissue injector, version one shown in the extended and retracted position. The diameter of the tool measures 11.4 mm at the largest cross section and has an overall length of 175.8 mm when retracted (b) and 183.3 mm when fully extended (a). The tube measures 1.59 mm ID × 1.83 mm OD and has a length of 36.1 mm as measured from the tip of the tool’s body