An aspiration system to control vacuum pressure in an ultrasonic surgical handpiece to result in improved control responsiveness during aspiration. The system comprises a console including a vacuum pump. The system includes a cassette comprising a joint that divides a vacuum path into at least two flow paths. A first joint port couples to a first flow path. A second flow path is coupled to a second joint port, a third flow path is coupled to a third joint port, and a fourth flow path is coupled to a port on a surgical waste receiver. A first sensor senses pressure in the fourth flow path and provides a waste receiver pressure signal. A second sensor senses pressure in the third flow path and provides a tip pressure signal. The controller controls a position of a first vent valve and a second vent valve based on the waste receiver pressure signal and the tip pressure signal, respectively.

The present disclosure relates to a gas injection stabilization device and comprises: a fixed volume part having a first gas space with a fixed volume; at least one variable volume part which is in communication with the fixed volume part, and which has a volume that varies due to a gas introduced to and discharged from the fixed volume part, and which has a second gas space connected to the first gas space; a gas supply part which is connected to the fixed volume part and receives a supply of a gas from an external gas supply device; and a gas discharge part which is connected to the fixed volume part and discharges a gas to an external surgical space.

An inline flow control device for passive irrigation tubing to be used with electrophysiology devices, includes an elastically deformable diaphragm that can assume a neutral configuration, a first flexed configuration and a second flexed configuration in response to pressure change upstream or downstream of the diaphragm in self-adjusting the fluid flow to normalize the pressure change. In one embodiment, the diaphragm is unaffixed at least at its peripheral edge to allow the diaphragm to flex at its peripheral edge to vary the fluid flow through the device. In another embodiment, the diaphragm is fixed at its peripheral edge to allow the diaphragm to flex in its inner region to allow different movement of a piston through which the fluid flows in response to pressure changes upstream and downstream of the diaphragm.

An active breathing assistance apparatus is disclosed. A simple apparatus includes first, second and third sets of balloons in a base compartment; a compression component on or over the balloons, configured to expel air from the balloons; a tubing network connected to the balloons; a wearable breathing compartment at an outlet of the tubing network; first and second check valves in the tubing network, between the breathing compartment and (i) the third set of balloons and (ii) the first and/or second balloons, respectively; third and fourth check valves between atmospheric air and the first and second balloons, respectively; a cover securing the compression component to the base compartment; and a motion restricting component controlling movement of the compression component. The first and second sets of balloons are between the compression component and the base compartment, and the third set of balloons is between the compression component and the cover.

Devices, systems and methods for controlling, regulating, altering, transforming or otherwise modulating the delivery of a substance to a delivery site. The devices, systems and methods optimize the delivery of the substance to an intended site, such as a vessel, vascular bed, organ and/or other corporeal structures, while reducing inadvertent introduction or reflux substance to other vessels, vascular beds, organs, and/or other structures, including systemic introduction.

This disclosure describes devices, systems, and methods related to a connector for a dressing, such as a dressing of a hyperbaric oxygen therapy system. An example of a connector includes a connector body configured to define at least a portion of a first channel. The connector also includes a viewing member coupled to the connector body. The connector further includes a deformable member positioned within the first channel. The deformable member is configured to deform based on a pressure associated with the deformable member and to provide a visual indication, via the viewing member, of the pressure.

A dialysis machine, in particular for hemodialysis and/or hemofiltration, having a dialyzate system and having a water inlet via which the dialyzate system can be connected to an external water supply. The dialysis machine includes a constant flow regulator that is arranged between the water connection and the dialyzate system.

A vane compressor for a surgical gas delivery system is disclosed, which includes a compressor head having an outlet port for delivering pressurized gas to a gaseous sealing manifold communicating with a gas sealed trocar and an inlet port for receiving spent gas from the gaseous sealing manifold by way of the gas sealed trocar, wherein the compressor head is coupled to and driven by a motor.

A manifold assembly for a surgical gas delivery system is disclosed, which includes a manifold body including an inlet port for receiving gas from an outlet side of a compressor and an outlet port for recirculating gas to an inlet side of the compressor, a bypass valve communicating with the inlet port and the outlet port of the manifold body, an air ventilation valve for dynamically controlling the ingress of air from atmosphere, a smoke evacuation valve for dynamically controlling the egress of gas from the manifold assembly when the gas delivery system is operating in a smoke evacuation mode, and a gas fill for dynamically controlling the receipt of gas from a source of surgical gas.

A gas heater for a surgical gas delivery system is disclosed, which includes an elongated tubular body defining an interior flow passage having an inlet port for receiving insufflation gas from a gas source and an outlet port for delivering heated insufflation gas to an insufflation manifold, a dielectric support positioned within the interior flow passage of the tubular body, and a resistive element operatively associated with the dielectric support for heating insufflation gas flowing through the tubular body from the inlet port to the outlet port.