CFD Modeling On the Factors Affecting the Suction Rate of the Blood Clot Removal Using GP Device

There are 40 000 Malaysians suffered stroke and stroke become the third major killer in
Malaysia. Stroke happens when the blood supply which carries vital oxygen and nutrients are
disrupted by the blood vessel wall ruptures or get clogged. The Gillian Pearce Mechanical
Thrombectomy Device (GP MTD) is the device that can remove the blood clot with the concept
of suction. However, the pressure must not cause the damage to the blood vessel. Computational
Fluid Dynamic (CFD) will be used to simulate the flow in GP MTD. The movement of clot in
blood is predicted using Navier Stokes Equation where two immiscible phases is considered. In
the project, three geometry ofGP Device has been designed with the different number of helical
spiral which are zero, five and ten helical spiral. The suction pressure is varied to three
conditions which are 40kPa, 50kPa, and 60kpa. Suction rate will increase when the suction
pressure in increased. Suction rate also increase when less spiral is used but the pressure drop
during the suction will increase. Lower pressure drop is desirable for the blood clot removal
process to avoid artery rupture.