Research and development of a laparoscopic surgical device for ligating endless organs based on a flexible structure

Figures & data

Figure 1. Comparison of laparoscopic and open resections for colon cancer, 2006–2012 [4].

Table 1. Types of laparoscopic surgery, number of ports and port size.

Type	Port number	Port size
SILS, SPS and LESS	1	3.5 cm
MLS and MANOS	3 to 6	1 10-12 mm port (umbilicus) and several of 3 mm ports (upper abdominal wall)
HALS and CLS	3 to 6	1 10-12 mm port (umbilicus) and several of 5 mm ports (upper abdominal wall)

Figure 2. Conventional method for laparoscopically ligating an organ.

Figure 3. Design of the Model 1 ring unit.

Figure 4. Model 1 ring unit coupling side view at full flexion.

Figure 5. Model 1 tip control mechanism.

Figure 6. Model 1 control unit assembly.

Figure 7. Model 1 laparoscopic ligation mechanism – straight.

Figure 8. Model 1 laparoscopic ligation mechanism at full flexion.

Figure 9. Design of the Model 1 ring unit.

Figure 10. Model 2 ring unit coupling side view at full flexion.

Figure 11. Model 2 tip control mechanism and thread feed path.

Figure 12. Control unit view of Model 2.

Figure 13. Model 2 laparoscopic ligation mechanism – straight.

Figure 14. Model 2 laparoscopic ligation mechanism at full flexion.

Figure 15. Ligating procedure using the developed mechanism.

Figure 16. Laparoscopic surgical simulator.

Figure 17. Comparison of time taken to ligate organs using conventional ligation and ligation using the newly developed mechanism in the case of experienced surgeons.

Figure 18. Comparison of time taken for experienced surgeons and non-surgical persons to ligate organs using the newly developed mechanism.

Laudicella M, Walsh B, Munasinghe A, et al. Impact of laparoscopic versus open surgery on hospital costs for colon cancer: a population-based retrospective cohort study. BMJ Open. 2016;6:e012977.

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