A dental valve device has a valve body having a tip receiving end having a flexible tubing extending outwardly from the tip receiving end with the flexible tubing having a flexible tubing opening, a hose receiving end, a lumen formed between the flexible tubing opening and the hose receiving end, and a partial opening formed in the valve body, and a rotatable valve sealing body adapted to be inserted into the partial opening, the rotatable valve sealing body having a bore for alignment with the lumen formed between the flexible tubing opening and the hose receiving end, the bore having a tip receiving opening and a hose receiving opening.

An aspiration control device can have an aspiration control valve and a switch, button, slider, trigger, grip, lever, rotating wheel, rotating valve, handle or other interface for resizing the aspiration control valve. The aspiration control interface can be conveniently positioned and configured to be manipulated while simultaneously stabilizing a catheter and/or retracting an elongated member. The aspiration control device can be integrated with a hemostasis valve, integrated with a wire gripping device, and/or attached to an inlet, outlet, hose, pump, or syringe in series with an aspiration flow path.

A disposable dental valve device is disclosed having a valve body having a tip receiving end, a hose receiving end, a lumen formed between the tip receiving end and the hose receiving end, a partial opening formed in the valve body, and a rotatable valve sealing body adapted to being inserted into the partial opening, the rotatable valve sealing body having a bore for alignment with the lumen formed between the tip receiving end and the hose receiving end, the bore having a tip receiving opening and a hose receiving opening, the rotatable valve sealing body having a check valve positioned on the tip receiving opening, and the rotatable valve sealing body having a top and a handle portion connected to the top.

A dual-lumen closed-system suction catheter assembly has a handpiece (2) at its machine end coupled to a suction source (27) and a source (37) of irrigating liquid. The handpiece has a pistol grip shape with a suction control (30) on its upper part (22) that can be operated by the thumb to open a valve (28) in line between the suction lumen (10) of the catheter (1) and the suction source (27). The flow of irrigating liquid to the catheter (1) is controlled by an irrigation valve (38) in the handpiece that is actuated by a trigger (50) when squeezed by the fingers of the same hand.

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 saliva ejector device comprises a handle having a passageway in fluid communication between a vacuum device and a saliva ejector. The saliva ejector device comprises an automatic switching mechanism comprising a button that is switchable between open and closed positions to allow or restrict restricts airflow. The button can be automatically actuatable, via a compliant device in the handle, when an individual places the handle in the cradle or removes the handle from the cradle. The compliant device can be a tube that allows or restricts airflow about the passageway, or a spring in the passageway that actuates the button. A saliva ejector device comprises a handle having an upper housing rotatably coupled to a lower housing to selectively switch the handle between open and closed positions to allow or restrict airflow about the handle. A handle adapter has a spherical body for an individual to cup or hold to improve ergonomics. Associated systems and methods are provided.

A flow control system for an ultrasonic aspirator handpiece having an aspiration pathway having an inner nosecone operatively connected to the handpiece. A flow control mechanism is disposed over the inner nosecone defining a flow control channel therebetween. The flow control channel is operatively connected to the aspiration pathway. A control aperture of the flow control mechanism is configured for variable engagement by a digit of an operator between an open position and a closed position for corresponding variable adjustment of an aspiration flow rate.

A specimen collection assembly (100) including a flow control member (106) for adjustably altering a flow path is disclosed. In one configuration, the flow control member (106) defines a regulation channel (166) in fluid communication with a lumen of a cannula (112), wherein the flow control member (106) is configured to adjustably alter an effective flow distance between the lumen of the cannula (112) and an interior of an evacuated collection container. In another configuration, the flow control member (106) is positioned to vary an effective cross-sectional area of at least one of an inlet port (346) and an outlet port (350) adapted to be in fluid communication with the lumen and the evacuated collection container.

Apparatuses, systems, and method for hydraulic pumps are disclosed. Particularly, hydraulic pumps for ophthalmic surgical procedures are disclosed. Hydraulic pumps within the scope of the disclosure may include an aspiration pump. An example aspiration pump may include first and second hydraulic cylinders and a plurality of one-way valves that are operable to permit fluid flow into a first part of a hydraulic cylinder responsive to movement of a piston within the hydraulic cylinder in a first direction and operable to permit fluid to flow out of the hydraulic cylinder responsive to movement of the piston in a second direction opposite the first direction. The aspiration pump may be attached to a housing of a hand piece, or a portion of the aspiration pump may be received into the housing of the hand piece.