Related Experiment Video
Updated: Jul 12, 2026

A Decentralized (Ex Vivo) Murine Bladder Model with the Detrusor Muscle Removed for Direct Access to the Suburothelium during Bladder Filling
Published on: November 28, 2019
Spring active drain using bladder (50-60ml) syringe (De Adotey's drain)
Patrick Okechukwu Igwe1, Amabra Dodiyi-Manuel1, Jacob Molai Adotey1
1Department of Surgery, University of Port Harcourt Teaching Hospital (UPTH), Alakahia, Port Harcourt, Rivers State, Nigeria.
Introduction:
Closed active drainage system with a syringe is an accepted way to let out fluid in a surgical wound. We present a simple spring active (negative suction) drainage (SAD) system using locally improvised metallic spring and 60ml (bladder syringe); SAD of Adotey, a newly designed compression-expansion spring mechanism which serves especially in situations where an active drainage system is of utmost importance.
Conclusion:
De Adotey's drain is a 60ml bladder syringe with spring mechanism which is used to provide a negative pressure as an active drain.

