Abstract: A pressure relieve valve for cardio pulmonary bypass responsive to abnormal pressure changes due to kinks in conduits used with the valve. In this situation, a principal flow path through a duckbill valve can be bypassed by positive and negative secondary flow paths for pressure relief. The secondary flow paths exist using umbrella valves of opposite orientation blocking holes in a flange separating inlet and outlet extensions of a tubular central body housing the duckbill valve. Each umbrella valve is throttled with a nipple that moderates flow in each of the secondary flow paths for slowing pressure equalization.
Type:
Application
Filed:
October 9, 2015
Publication date:
April 13, 2017
Applicant:
Aurum Medicare PTE LTD
Inventors:
Martin Kok Soon Wong, Pheng Meng Tan, Chikashige Kiyoshi
Abstract: A one-time use cartridge for a CT or MRI syringe has a syringe body coupled to an adapter by flanges that are trapped by a locking tooth supported as part of a groove in a unitary adapter. One-time use is enhanced with one-way valves associated with the forward end of the syringe body. The one-way valves have coaxial inner and outer members with reversed roles for fluid inflow and outflow tubing connections. The valves operate under positive and negative pressure generated by the syringe piston.
Type:
Grant
Filed:
January 23, 2015
Date of Patent:
February 23, 2016
Assignee:
Aurum Medicare Pte Ltd
Inventors:
Martin Wong, Isao Ochi, Juan Antonio S. Salgado