Development and experimental research on the physical model of male pelvic organ group / 国际生物医学工程杂志

ABSTRACT

Objective To develop the physical model of male pelvic organ group and conduct corresponding prostate puncture experiments.Because sufficient research and plenty of surgical training is very important for improving the surgical treatment effect of prostate puncture surgery,in which the deformation of needle and tissue has significant influences on surgical precision.Methods Based on the magnetic resonance images,the 3D reconstruction of human pelvic organs group was performed,and then the monomer organ moulds were designed.The monomer organ models were made by a new type of polyvinyl alcohol (PVA) hydrogel which is a biomimetic material and can simulate biomechanical properties of different tissues by adjusting the proportion of components.The monomer organ models were assembled to simulate the internal environment of pelvic cavity based on the human anatomical structure,and the experiments of insertion force and deformation were conducted.Results The results of insertion force experiments indicated that the mechanical properties of the proposed model of pelvic organ group were coincident with the force variation in real surgury.During the insertion deformation experiments,the deformation of needle and organs could be clearly observed in the ultrasound images,which indicates that the pelvic organ group has good ultrasonography compatibility.Conclusions The proposed physical model of male pelvic organ group can meet the requirements of experiment research and surgical training of prostate puncture,which provides foundation for improving precision and popularization of puncture surgery.