A minimal invasive medical device comprises a reusable portion and a disposable portion connectable by a mechanism. The medical device further includes an actuation unit positioned in the reusable portion. The actuation unit is configured to deflect a tip of the disposable portion. The actuation unit is operable by at least one of a knob and an actuator to deflect the tip of the disposable portion. The configuration of the medical device enables in detaching the disposable portion from the reusable portion, which enables in reusing the medical device by replacing only the disposable portion, which facilitates in ensuring high hygiene and yet minimizing the surgical costs. Also, the medical device provides flexibility in repairing and serviceability.