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 valve mechanism for a suction instrument or an irrigation instrument is disclosed, which comprises: a valve object; a first piston moveably disposed in the valve object; a second piston moveably disposed in the valve object; and a piston buckling unit pivoting on an outside of the valve object. When the first piston is pressed, the first piston moves downward and a first buckle on the first piston is fixed on a third buckle of the piston buckling unit to open an irrigating pathway; and when the second piston is pressed, the second piston moves downward and a second buckle on the second piston is fixed on another third buckle of the piston buckling unit to open a suction pathway.

Vacuum pump (18) for a medical aspirator (10), the pump (18) comprising a tubular member (20); a piston (22) slidably arranged within the tubular member (20); a piston rod (24) connected to the piston (22); and a coupling mechanism (36) for detachably and functionally connecting the piston rod (24) to a motor (38) for driving the pump (18), wherein the piston rod (24) is configured to reciprocate linearly during operation of the pump (18).

A suction irrigator includes a drive housing, a flow control system arranged within the drive housing and including a flow manifold that houses an internal valve, and a drive input rotatably mounted to the drive housing. A capstan assembly is arranged within the drive housing and is operatively coupled to the flow manifold such that rotation of the drive input actuates the capstan assembly and thereby operates the internal valve between closed and open positions. A button is mounted to the drive housing and operatively coupled to the flow manifold such that manually depressing the button operates the internal valve between the closed and open positions. A decoupling mechanism mechanically decouples the button from the capstan assembly when the button is manually pressed such that manual movement of the button fails to backdrive the drive input or a motor operable to drive the drive input.

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 vacuum aspiration system and methods of use are disclosed. The system and method can be configured to provide deep pulsatile suction to a catheter body to more efficiently aspirate a clot material from a patient. In some embodiments, a deep pulse can include a rapid increase in flow rate of the fluid through the catheter body to a sustained high flow rate range for a short period of time followed by a rapid decrease in the flow rate to a low or negligible flow rate level to minimize blood loss without any changes to the suction pressure being applied to the catheter.

An intraluminal system for aspirating biological material from a lumen of a patient includes a disposable intraluminal device having a proximal portion and a distal portion. The system includes a disposable pump configured to aspirate the biological material from the lumen of the patient. The disposable pump is coupled to the proximal portion of the intraluminal device. The disposable pump comprises a pump chassis that houses: an inlet port configured to sealably attach to the proximal portion of the intraluminal device; an outlet port configured to expel the aspirated biological from the pump; and a flow controller configured to adjust a fluid flow through the pump, wherein the pump chassis is sized and shaped to be manually supported by a user.

A ventilation switching structure includes a valve, a switching cylinder, and a knob. The valve includes a receiving room, a main tube and branch tubes. The main tube is connected with a negative pressure instrument and connected to the receiving room. The branch tubes are located on two sides of the main tube. The switching cylinder is rotatably disposed in the receiving room and includes a main channel, multiple lateral channels, and a blocking wall. The lateral channels communicate with the main channel and are disposed on a side of the blocking wall at intervals. The knob is connected on the switching cylinder. The knob is capable of rotating the switching cylinder to make the blocking wall optionally block one of the branch tubes so as to accomplish the object of ventilation switching.

The present application describes a device (100) for transferring a fluid from a surgical site, comprising an elongate body portion (102) defining a proximal end region (106) of the device connectable to a source of negative pressure, an elongate neck portion (104) defining a distal end region (108) of the device locatable at a surgical site, a through bore extending from the distal end region to the proximal end region, and a control member (116) for selectively controlling a negative pressure at the distal end region of the device, wherein the control member comprises a button portion actuatable by a user to selectively move a valve portion of the control member across the through bore from an open position towards a closed position to at least partially restrict a fluid flowing along the through bore. A system including said device (100) and a flexible tube (200) and a method of controlling a negative pressure at the distal end region of the device are also described.

A noise-reducing attachment for a surgical suction device having a valve operable by a finger. The attachment includes an airflow redirecting portion configured to overlay at least a portion of the valve; and at least one clip fixing portion configured to removably attach to a valve-housing portion of the surgical suction device. The airflow redirecting portion includes an opening extending from a top face to a bottom face thereof, and an axis extending through the opening is oriented at an acute of 10 to 80 relative to a longitudinal axis of the attachment.