Trial of a novel endoscopic tattooing biopsy forceps on animal model

Figure 1 Structure of endoscopic tattooing biopsy forceps. 1, syringe needle; 2, bowl-shaped notched biopsy forceps; 3, fixation sleeve of biopsy forceps; 4, biopsy forceps guide wire; 5, metallic tube; 6, transfusion tube which is provided with syringe nozzle 6-1; 7, control block of syringe needle and biopsy forceps; 8, adaptor piece of transfusion tube; 9, pull-rod shank, on which there is a slot of syringe nozzle 9-1, slot for pull-rod 9-2 and handle 9-3.

Figure 2 Head and shank of mucosa tattooing biopsy forceps.

Figure 3 Mucosa tattooing biopsy forceps.

Figure 4 Point of injection with 0. 5 mL of India Ink (1:100) on the angle mucosa of a pig after 1 wk (A) and 15 mo (B).