A self-flushing connector includes a housing having a cavity, a first inlet port, a second inlet port, and an outlet port. A collapsible valve is disposed within the cavity. A first flow path extends from the first inlet port to the outlet port. The first inlet port and the second inlet port are fluidly connected through a gap defined between the body of the collapsible valve and an inner wall of the housing defining the cavity. A second flow path extends from the second inlet port to the first flow path. When the collapsible valve is in a closed state, the collapsible valve fluidly disconnects the second flow path from the first flow path while allowing fluid to flow through the first flow path. When the collapsible valve is in an open state, the second flow path is fluidly connected to the first flow path.

Inside a connector body (112, 114; 300) of a medical connector providing a fluid flow conduit, a one-way valve (118) is fitted directly into one end of a stop valve (116) in a manner providing a fluid tight seal between these valves. The stop valve (116) prevents fluid flowing out of the end (111; 311) of the connector body (112, 114; 300) unless a complementary end of a separate device (not shown), typically a Luer lock connector, engages the end of the connector body and opens the stop valve (116). To facilitate manufacture and assembly, the one-way valve (118) and the stop valve (116) can be formed as parts of a single piece of elastomeric material, the parts being hingedly connected so that the one-way valve part (118) can be folded over to be fitted directly into the end of the stop valve part (116). A further possibility, also applicable when only a stop valve (116) is provided, is that the connector body (300) may be formed in one piece with a folding, snap fit closure (312).

An externally programmable shunt valve assembly that includes a motor having a rotor that is operable in response to an externally applied magnetic field and configured to increase or decrease the working pressure of the shunt valve assembly. The motor may further include a position sensing mechanism that allows a position of the rotor, and associated pressure setting of the valve, to be determined using an external magnetic sensor. In certain examples the motor further includes a mechanical brake that is magnetically operable between a locked position and an unlocked position and which, in the locked position, prevents rotation of the rotor.

An externally programmable shunt valve assembly that includes a motor having a rotor that is operable in response to an externally applied magnetic field and configured to increase or decrease the working pressure of the shunt valve assembly. The motor may further include a position sensing mechanism that allows a position of the rotor, and associated pressure setting of the valve, to be determined using an external magnetic sensor. In certain examples the motor further includes a mechanical brake that is magnetically operable between a locked position and an unlocked position and which, in the locked position, prevents rotation of the rotor.

A sphygmomanometer device includes a piezoelectric pump, a valve, and a cuff. The valve includes a first valve housing, a diaphragm, and a second valve housing. The diaphragm is fixed to the second valve housing and first valve housing such that it is separated from a valve seat and the periphery of an opening portion in the diaphragm is in contact with a valve seat while providing a pressure thereto. Thus, the diaphragm defines a lower valve chamber communicating with a first vent hole, an upper valve chamber communicating with a second vent hole, a lower valve chamber communicating with a first vent hole, and an upper valve chamber communicating with the upper valve chamber, together with the second valve housing and first valve housing.

An externally programmable shunt valve assembly that includes a motor having a rotor that is operable in response to an externally applied magnetic field and configured to increase or decrease the working pressure of the shunt valve assembly. The motor may further include a position sensing mechanism that allows a position of the rotor, and associated pressure setting of the valve, to be determined using an external magnetic sensor. In certain examples the motor further includes a mechanical brake that is magnetically operable between a locked position and an unlocked position and which, in the locked position, prevents rotation of the rotor.

A dual check valve includes an upper housing, an intermediate housing, and a lower housing, and a first valve seat. The intermediate housing is coupled to the upper housing to define a first cavity, and includes a second valve seat. The lower housing is coupled to the intermediate housing to define a second cavity. A first disk is mounted in the first cavity and configured to selectively contact the first valve seat. A second disk is mounted in the second cavity and configured to selectively contact the second valve seat. When the dual check valve is in an open state, the first disk deflects away from the first valve seat to create a first gap, and the second disk deflects away from the second valve seat to create a second. The first gap is smaller than the second gap.

A medical push button valve having a valve housing, a flow channel formed in the valve housing as well as a valve piston which is arranged displaceably in the valve housing between a position releasing the flow channel and a position closing the flow channel. The valve piston is operatively connected with a pressure element mounted on the valve housing and is spring-loaded via at least one spring element. The valve piston is biased into the position closing the flow channel with the spring-loaded pressure element. In order to provide a medical push button valve which allows for a simple and fatigue-free one-handed operation, the spring-loaded pressure element can be locked in at least one position in which the valve piston operatively connected with the pressure element at least partially releases the flow channel.

A specimen collection assembly including a flow control member for adjustably altering a flow path is disclosed. In one configuration, the flow control member defines a regulation channel in fluid communication with a lumen of a cannula, wherein the flow control member is configured to adjustably alter an effective flow distance between the lumen of the cannula and an interior of an evacuated collection container. In another configuration, the flow control member is positioned to vary an effective cross-sectional area of at least one of an inlet port and an outlet port adapted to be in fluid communication with the lumen and the evacuated collection container.

A medical suctioning, pressure relief valve having a housing having a central fluid passage way, a first suction tubing connector configured to connect suction tubing to the central fluid passage way, a second suction tubing connector configured to connect suction tubing to the central fluid passage way, and a one-way internal pressure relief valve configured to allow ambient air into the central passage way when a set negative pressure is reached within the central passage. A method of suctioning a fluid from a patient using the medical suctioning, pressure relief valve.