Abstract

Intravenous IV therapy is a standard method of treatment in hospitals and clinics However the intravenous infusion system has its drawbacks one of them being the reverse flow of blood back into the IV tube The difference in pressure between the drip chamber and the venous pressure causes the reverse flow To address the above issue hospitals use a blood pressure cuff tied on the same arm where the infusion is given and this cuff is inflated when backflow occurs However this technique requires constant monitoring which is difficult when the number of patients have to be monitored simultaneously Although several automatic systems have been developed to make the monitoring of intravenous infusions easier for both clinicians and patients alike there hasn t been a system specifically designed to address this issue by locking the tube In this paper we propose a valve-controlled locking system aimed at preventing backflow using a load cell a Hx711 amplifier module a microprocessor and a solenoid valve This system is simple and cost-effective making it accessible even in poor resource locations