digital siringa

[GiuliCasti]

Good morning, for a university exam, I have to design a digital syringe for anesthesia. I calculated the required load (14,6n) and the required linear speed (0,00179m/s). I thought of using a stepper motor and a linear actuator to push the piston of the tubular. Can you help me with the sizing?

 

[Vittorio]

Good. I learned today that digital syringes exist.
I'm not able to help you, but curiosity prompted me to search and found this video
I see that they use a stepper motor with integrated an endless screw so as to eliminate the linear actuator.
-- Look here

 

[DoctorBomber90]

Good morning, for a university exam, I have to design a digital syringe for anesthesia. I calculated the required load (14,6n) and the required linear speed (0,00179m/s). I thought of using a stepper motor and a linear actuator to push the piston of the tubular. Can you help me with the sizing?

Could you attach an image of your syringe?

 

[cacciatorino]

Good morning, for a university exam, I have to design a digital syringe for anesthesia. I calculated the required load (14,6n) and the required linear speed (0,00179m/s). I thought of using a stepper motor and a linear actuator to push the piston of the tubular. Can you help me with the sizing?

Did you take into account the first detachment friction? could be higher than the simple load due to fluid counterpression.

If I'm not mistaken, these objects are called "infusion pump" or "browning pump".