A catheter priming apparatus may include a barrier forming a reservoir. Fluid may be disposed within the reservoir. A support structure may be disposed within the barrier. The support structure may include an opening extending through the support structure and a connector configured to couple the catheter priming apparatus to a catheter system. A one-way valve may be coupled to the support structure and configured to allow the fluid to flow out of the reservoir through the connector in response to compression of a portion of the barrier aligned with the opening.

In some embodiments, a housing can define a reservoir. A lower cap can be coupled to the housing and define an outlet, and an upper cap can be coupled to the housing and can define an inlet. The upper cap can include an extending portion extending laterally a distance beyond an outermost extending portion of the lower cap relative to a central axis of the housing such that, when the lower cap and the extending portion of the upper cap contact a horizontal surface, the central axis of the housing is transverse to the surface and a sealing member is configured to sealingly engage a sealing surface of a valve seat prior to a liquid fluid level within a reservoir decreasing below a minimum threshold fluid level.

A flow selector valve assembly for an enteral feeding pump system (i.e., an enteral feeding pump system including a fluid delivery set with first and second feeding tubes, an enteral feeding pump and a pinching mechanism for regulating the flow of nutrient formula or water out of the first and second feeding tubes), and a twin port adapter for use in the valve assembly. The twin port adapter includes a body configured to receive the first and second feeding tubes therein, and a feeding tube guide rotatably connected to the body and configured to secure the first and second feeding tubes within the body.

A system includes a flow regulating system. The flow regulating system may assist in ensuring a selected pressure within an inlet volume. A flow regulator may be included in a shunt assembly(10).

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.

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.

A fluid collection system for collecting fluid, such as urine through a series of valves and bags that isolate urine from the input to reduce risk of infection includes an input tube connected removably to a fluid supply tube, first and second valves separate from one another and each having flow-on and flow-off states and each fluidically connected to the input tube, respectively, to receive the input fluid and to output the input fluid when in the flow-on state, and at least one hollow collection container defining a water-tight interior and comprising a removable connector configured to removably connect to one of the first and second valves and, responsive to connection thereto, configured to receive the input fluid. The bags also contain a hydrogel to absorb the fluid. Input fluid pressure can be controlled and calibrated to maintain backpressure on the bladder.

A pressure relief valve for a reservoir has a main body with a central chamber defining an outer radial seat, a positive-pressure port with an inner radial seat, and a negative-pressure port comprising an internal passage spanning the outer seat. The sealing disk has an anchor body retained in the central chamber and a flexible diaphragm biased against the outer seat. An axial passage in the anchor body couples the central chamber to ambient atmospheric pressure. The sealing ball is biased against the inner seat. When a pressure inside the reservoir exceeds ambient by a positive-pressure threshold, then the sealing ball lifts off the inner radial seat to exhaust a gas through the positive-pressure port. When the pressure inside the reservoir is below ambient by a negative-pressure threshold, then the diaphragm is lifted off the outer seat to intake atmospheric gas into the reservoir.

An implantable intracranial pulse pressure modulator for treating hydrocephalus in patients of all ages is disclosed as well as a system and method for use of the same. In one embodiment of the implantable intracranial pulse pressure modulator, two one-way valves are interposed in parallel, opposing orientations between a vestibule and a chamber. One of the one-way valves, in response to systole, provides fluid communication from the vestibule to the chamber such that a small aliquot of cerebrospinal fluid (CSF) is displaced from a cerebral ventricle into a ventricular catheter, thereby reducing intraventricular systolic pressure. The other one-way valve, in response to diastole, provides fluid communication from the chamber to the vestibule such that the same volume of CSF is reintroduced into a cerebral ventricle, thereby increasing intraventricular diastolic pressure. Together, both processes work synergistically to reduce intraventricular pulse pressure in order to treat hydrocephalus.

Embodiments disclosed herein are directed to a connector for a fluid drainage system for fluidly coupling a catheter to a drainage tube. The connector includes a body defining a drainage lumen extending along a longitudinal axis from a distal portion to a proximal portion. The connector also includes a positive air pressure inlet and a valve slidably engaged with a valve housing along the longitudinal axis between a first position and a second position. The valve in the first position provides fluid communication between the distal portion and the proximal portion of the drainage lumen, and the valve in the second position occludes fluid communication between the proximal portion and the distal portion of the drainage lumen. Pressurized air provided at the inlet can transition the valve to the second position and clear any dependent loops within the drainage lumen.