A delivery device for intravenous delivery of microparticles to a patient. The delivery device is fluidly connectable to (i) a first source of an injection medium and (ii) a second source of an injection medium. The delivery device includes: a first fluid inlet fluidly connectable to the first source of the injection medium, a fluid outlet, a fluid mixer fluidly connecting the first fluid inlet to the fluid outlet, a second fluid inlet fluidly connectable to the second source of the injection medium, and a source of microparticles fluidly connecting the second fluid inlet to the fluid mixer. When fluid flows from the second source of the injection medium into the delivery device: the second injection medium fluidly drives microparticles from the source of microparticles into the fluid mixer, and the fluid outlet dispenses to the patient an injection medium that includes the microparticles.

Ultrasound-guided rete testis injection/aspiration devices and methods are described. Some methods include inserting a needle into the rete testis space of a patient and injecting a therapeutic medium through the needle into the rete testis space and seminiferous tubules of the testis. The therapeutic medium can help to treat infertility. In some examples, the method can include monitoring intra-testicular pressure of the patient. In some examples, the therapeutic medium can include stem cells. In some examples, the therapeutic medium can include gene therapy vectors. In some examples, the method can include flushing the rete testis space and seminiferous tubules with a saline solution through the needle. Exemplary devices can include a dual lumen needle, a collection tube, a dual function pump, and flexible tubing. The dual function pump can include a dual syringe pump and a vacuum pump.

Force sensing assemblies for an infusion pump are provided. A force sensing assembly includes a processor and an occlusion sensor coupled to the processor. The occlusion sensor is positioned opposed to an occluder valve when the platen is closed. The force sensing assembly measures one or more forces exerted on a fluid tube during a pump cycle. Infusion pump assemblies, methods of operating an infusion pump with a force sensing assembly, systems for controlling an infusion pump and an infusion device are also provided.

An intravenous fluid delivery apparatus (IFDA) includes a body having two or more docks, wherein each dock includes a dock outlet and is configured to engage with a container. The IFDA further includes a fluid interface having two or more interface inlets and an interface outlet, wherein the two or more interface inlets are in fluid communication with the interface outlet, and two or more supply lines, each supply line disposed between one of the dock outlets and one of the interface inlets, wherein the interface outlet is configured to connect with an intravenous line.

An anesthetic administration device comprising an infusion device, which is in fluid connection with a regional anesthetic needle by means of a feed tube. The infusion device comprises one or more anesthetic flow devices capable of triggering forward flow, and optionally backward flow, of the local anesthetic through the regional anesthetic needle. Forward, and optionally backward flow, of the local anesthetic through the regional anesthetic needle is controlled by a controller that comprises one or more actuator switches. The one or more actuator switches are positioned on the device 1 such that they may be operated by hand.

Automated injection system disclosed in this application advantageously provides physicians with a simplified interface for selecting fluid sources, such as saline, contrast, or a mixture of both, to inject at high pressures. The injector system may comprise a multi-use subassembly, a single-use subassembly, a fitting to fluidly connect the multi-use and single-use subassemblies, a hand held controller, a user interface, and an injector housing.

An intradermal fluid delivery device that uses a processor controlled electromechanical delivery mechanism is provided. An air pump pushes fluid containing medication or saline from a fluid compartment through a microneedle array into a person's skin. The processor repeatedly turns the air pump on or off, for the fluid to gradually be injected into the person's skin. The processor may be configured to control the total fluid delivery time as well as the granularity of the fluid delivery. The total fluid delivery time may be set to T, and the time period T may be divided into smaller periods t.sub.1 to t.sub.n, where the fluid may be administered in a period t1, the fluid delivery may then be stopped for a period t2, followed by another fluid delivery period, etc. The periods t1 to tn may be the same or of different lengths.

Various embodiments of a device for splitting fluid substances and methods thereof are described. In one example, a device for splitting fluid substances among syringes includes an input port, a number of output ports, and a fluid distribution network. The fluid distribution network is formed to convey a fluid substance from the input port to the output ports. The fluid distribution network can include a number of fluid distribution channels for conveying the fluid substance from the input port to the output ports. The fluid distribution channels can be formed in a star configuration, in one example, although other configurations are possible. The device provides a more efficient way to fill smaller syringes during procedures, such as fat grafting procedures. The device can be used to fill a number of syringes concurrently, decreasing the time required to perform an operation, among other benefits.

A medical treatment system, such as a peritoneal dialysis system, may include a control and other features to enhance patient comfort and ease of use. For example, a cycler device may include a heater bag receiving section and a lid mounted to cover and uncover the heater bag receiving section, potentially enabling faster heating of a dialysate. A user interface may be moveable to be received into the receiving section and covered by the lid, if desired. The system may detect anomalous conditions, such as tilting of a housing of the system, and automatically recover without terminating a treatment. The system may include noise reduction features, such as porting pneumatic outputs to a common chamber, and others. The system may also automatically detect any one of several different solution lines connected to the system, and control operation accordingly, e.g., to mix solutions provided by two or more lines and form a needed dialysate solution. A cassette control surface may be arranged to have one or more ports that can detect a presence of a liquid, e.g., to identify if a cassette is leaking or has otherwise been compromised.

A method for controlling fluid ratio accuracy during a dual flow injection with a powered injection system is described. The method includes predicting a first capacitance volume of a first syringe comprising a first medical fluid and a second capacitance volume of a second syringe comprising a second medical fluid with a first capacitance correction factor and a second capacitance correction factor, respectively, selecting a ratio of the first medical fluid and the second medical fluid to be administered to a patient in the dual flow injection, determining a relative acceleration ratio of a first piston of the first syringe and a second piston of a second syringe based on the predicted first capacitance volume and the predicted second capacitance volume, wherein the relative acceleration ratio is selected to maintain the selected ratio of the first medical fluid and the second medical fluid during the dual flow injection, and injecting a mixture of a first medical fluid and a second medical fluid having the selected ratio with the powered injection system.