A catheter assembly for regulation or transfer of fluids to and from a patient. The catheter assembly may include a catheter and a valve assembly. The valve assembly may include a diaphragm having two unidirectional slit valves that open in different directions, a first unidirectional slit valve opening distally in response to an infusion-induced pressure and a second unidirectional slit valve opening proximally in response to an aspiration-induced pressure.

Systems, methods, and apparatuses for irrigating a tissue site are described. The system can include a tissue interface and a sealing member configured to be placed over the tissue site to form a sealed space, and a negative-pressure source fluidly coupled to the sealed space. The system includes an irrigation valve having a housing, a piston disposed in the housing, a fluid inlet to fluidly couple a fluid inlet chamber to a fluid source, and a fluid outlet to fluidly couple a fluid outlet chamber to the sealed space. A piston passage extends through the piston and fluidly couples the fluid inlet chamber and the fluid outlet chamber, and a biasing member is coupled to the piston to bias the irrigation valve to a closed position. The negative-pressure source is configured to move the piston between the closed position and an open position to draw fluid to the sealed space.

Systems, apparatuses, and methods for instilling fluid to a tissue site in a negative-pressure therapy environment are described. Illustrative embodiments may include a pneumatically-actuated instillation pump that can draw a solution from a solution source during a negative-pressure interval, and instill the solution to a dressing during a venting interval. A pneumatic actuator may be mechanically coupled to a disposable distribution system that can provide a fluid path between the solution source and a distribution component. A bacterial filter may be disposed in the fluid path between the actuator and the distribution component to prevent contamination of the actuator during operation. The distribution system may be separated from the actuator and disposed of after operation, and the actuator may be re-used.

A system is disclosed for delivering insufflation gas to a body cavity of a patient during a surgical procedure, which includes an insufflator for delivering a flow of insufflation gas to the body cavity of the patient through a flow path that communicates with a pneumatically sealed trocar, a flow meter for measuring an amount of gas that has been removed from the body cavity by use of a suction device, and a controller operatively connected to the flow meter for receiving a flow measurement from the flow meter to determine when the suction device is in use and an amount of insufflation gas needed to be delivered to the body cavity by the insufflator to compensate for the gas removed from the body cavity by the suction device.

Disclosed is novel means that enables collection of embryos from the uterus of a living livestock animal, especially cattle, easily in a short time with the same accuracy as that achieved by a skilled technician. A livestock embryo collection apparatus of the present invention comprises: two syringes; a liquid transfer line for connecting a perfusate supply section-a syringe I-a balloon catheter-a syringe II-an embryo collection section; a liquid transfer direction control section for controlling the direction of transfer of a perfusate in the liquid transfer line; and a syringe pump control section for controlling pump operation of the two syringes. By this apparatus, injection and removal of the perfusate can be quickly carried out by simultaneous operation of the two syringes by the syringe pump control section and the liquid transfer direction control section that work in a coordinated manner, so that the working time for collection of embryos can be largely reduced, and so that embryos in the uterus of a living animal can be collected easily, quickly, and with the same accuracy as that achieved by a skilled technician.

New and useful systems, apparatuses, and methods for providing negative-pressure therapy with instillation of topical treatment solutions are described. An apparatus may comprise an exudate container, a solution source, and a pneumatically-actuated instillation regulator. The instillation regulator may be coupled to the exudate container and to the solution source, and negative pressure from a negative-pressure source can actuate the instillation regulator. In some embodiments, a negative-pressure source may be configured for a negative-pressure interval and a venting interval, and the instillation regulator can be configured to draw instillation solution from the solution source during a negative-pressure interval and to instill the solution to a dressing during a venting interval.

A control system for a two-wheeled vehicle, including an inertial measurement unit (IMU); one or more control moment gyroscopes (CMGs); one or more CMG controllers to control the one or more CMGs; an accelerometer to measure a y-axis acceleration for the vehicle, the y-axis being perpendicular to a direction of travel of the vehicle and parallel to a ground surface; and a processing element to calculate a roll angle for the vehicle based at least in part on the y-axis acceleration measured by the accelerometer, determine a force component based at least in part on the calculated roll angle, and generate a CMG command for a CMG gimbal rate based at least in part on the determined force component.

Irrigation and/or aspiration devices and methods may be configured to aspirate and irrigate alone, sequentially, or concurrently. The devices and methods may provide a base with a removable head, and adapted for partial or complete separation of the irrigation and aspiration functions. The devices and methods can be configured to aspirate and/or irrigate the nasal and sinus cavities. The devices and methods may be manually and/or automatically controlled. The devices and methods may include removable, and/or replaceable, and/or refillable, and easily cleanable reservoirs for aspirant and irrigant. The device head and/or aspirant reservoir may comprise a diagnostic device, i.e., test device and/or container after use of the devices and methods.

Described herein are devices and methods for irrigating and suctioning fluids from the lumens or cavities of a mammalian body. The devices include a malleable irrigation tube and a suction tube that is slidably mounted upon the irrigation tube.

Irrigation and/or aspiration devices and methods may be configured to aspirate and irrigate alone, sequentially, or concurrently. The devices and methods may provide a base with a removable head, and adapted for partial or complete separation of the irrigation and aspiration functions. The devices and methods can be configured to aspirate and/or irrigate the nasal and sinus cavities. The devices and methods may be manually and/or automatically controlled. The devices and methods may include removable, and/or replaceable, and/or refillable, and easily cleanable reservoirs for aspirant and irrigant. The device head and/or aspirant reservoir may comprise a diagnostic device, i.e., test device and/or container after use of the devices and methods.