A safety valve sheet, a breathing tube, a breathing tube assembly and a breathing mask are provided. The safety valve sheet is used for being arranged in the breathing tube which is provided with a safety valve hole of the breathing mask, the safety valve sheet comprises a sheet body, and the sheet body comprises an outer side surface being capable of covering the safety valve hole, wherein a protrusion is formed on the outer side surface, and the protrusion is used for being contacted with an inner side surface of a hole edge of the safety valve hole when the sheet body covers the safety valve hole to form an exhaust gap between the outer side surface and the hole edge. The safety valve sheet is simple in structure and can effectively reduce exhaust noise after being applied to the breathing mask.

Herein disclosed is a pressure vessel for liquid mixing, comprising: a housing; a deformable member configured to define a chamber in combination with at least one portion of the housing; an inlet port fluidly communicated with the chamber; an outlet port fluidly communicated with the chamber; an elastic biasing means configured to interact with the deformable member to make a volume of the chamber variable; and an air detection means configured to detect the presence of air within the chamber. Also disclosed are a liquid mixing equipment, a liquid mixing system, a method for preparing a solution, a corresponding control system and a corresponding computer readable program carrier. According to the present disclosure, the solution pump is able to draw the solution in a substantially constant flow toward the mixing chamber and is able to operate at a relatively stable pressure.

A system for at least partial closed-loop control of a medical condition is disclosed. The system includes at least one medical fluid pump. The medical fluid pump including a sensor for determining the volume of fluid pumped by the pump. Also, at least one continuous analyte monitor, and a controller. The controller is in communication with the medical fluid pump and the at least one continuous analyte monitor. The controller includes a processor. The processor includes instructions for delivery of medical fluid based at least on data received from the at least one continuous analyte monitor.

A noise reduction structure for a ventilation treatment device and the ventilation treatment device are provided. The noise reduction structure comprises a first micropore plate; the first micropore plate has a first plate surface and a second plate surface which are opposite to each other, the first plate surface is used for forming a first chamber; the second plate surface is used for forming an air passage such that air in the air passage flows along the second plate surface; the first micropore plate has a plurality of first micro-vias through which the first chamber communicates with the air passage. The noise reduction structure is wide in noise reduction frequency band, may effectively reduce aerodynamic noise in the air passage, and improves the satisfaction degree of a patient using the ventilation treatment device.

There is provided an IV infusion set comprising a patient access configured to connect to a vascular system of a patient, a source of medical fluid, an infusion line having one first end configured to connect to the source of medical fluid and one opposite second end configured to deliver the medical fluid towards the patient access, an infusion apparatus arranged on the infusion line, a sensor configured to emit a pressure signal indicative of a pressure of a medical fluid in the infusion line, and a control unit configured to receive the pressure signal and to determine a patient signal indicative of a vital signal of the patient based on the pressure signal. The IV infusion set further comprises a compliance element configured to attenuate pressure variations of medical fluid the infusion line, and a resistance element configured to reflect pressure waves moving along the infusion line. The sensor is arranged on the infusion line at a position downstream from the resistance element with respect to a direction of fluid flow along the infusion line from the medical fluid source towards the patient access. The infusion line may include a main infusion line and/or one or more auxiliary infusion lines connected to a main infusion line.

A filling aid device for filling a reservoir. The device includes a cover portion comprising a septum window; a slider beam comprising a septum cover; and a first filling aid tab attached to the slider beam, the first filling aid tab in slidable relation to the cover from a first position to a second position, wherein when the filling aid device is in an unlocked position, the septum cover is located below the septum window, wherein when the first filling aid tab is moved from the first position to the second position, the septum cover is moved from below the septum window, and the filling aid device is in the locked position.

An infectious aerosol capture mask (IACM) includes a face tent coupled to a suction tube adapter. The face tent includes a proximal opening configured to be disposed over the mouth and nose of a patient. The face tent further includes a distal opening with a smaller diameter than the proximal opening. A coupler is configured to secure the suction tube adapter to the distal opening of the face tent. The suction tube adapter includes a suction port configured to be coupled to a suction tube for active capture of infectious aerosol and left unconnected for passive capture of infectious aerosol. A viral filter is disposed between the suction port and the face tent to capture infectious aerosols expelled by the patient. The IACM further includes one or more one-way valves that are configured to permit airflow into the face tent.

A connection device and process connect a patient-side coupling unit to a source/sink of a gas including oxygen. The connection device includes a valve device with a first valve (40.1) and with a second valve (40.2). A source-side fluid guide unit establishes a fluid connection between the source or the sink and the valve device. A patient-side fluid guide unit establishes a fluid connection between the patient-side coupling unit and the valve device. The valves are connected in parallel and are arranged between the two fluid guide units. A gas flows from the source through the first and/or second valve to the patient-side coupling unit or through the first and/or second valves to the sink. A control pressure is set at each valve. As a result, the time course of the volume flow downstream of the valve device follows a predefined time course.

A method of dispensing a therapeutic fluid from a line includes providing an inlet line connectable to an upstream fluid source. The inlet line is in downstream fluid communication with a pumping chamber. The pumping chamber has a pump outlet. The method also includes actuating a force application assembly so as to restrict retrograde flow of fluid through the inlet while pressurizing the pumping chamber to urge flow through the pump outlet. A corresponding system employs the method.

In one example, a phacoemulsification system includes a phacoemulsification probe including a distal end comprising a needle, and a piezoelectric crystal configured to vibrate the needle so as to emulsify a lens of an eye, an irrigation reservoir configured to store irrigation fluid, an irrigation line extending from the irrigation reservoir to the distal end of phacoemulsification probe, a pumping sub-system configured to pump the irrigation fluid from the irrigation reservoir to the distal end of the phacoemulsification probe via the irrigation line, and a pressure damping insert disposed in the irrigation line between the pumping sub-system and the distal end, and comprising multiple paths therethrough configured to divide a flow of the irrigation fluid entering the pressure damping insert in order to dampen pressure elevations in the irrigation fluid exiting the pumping sub-system.