A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.

Devices, systems, and methods are provided herein for delivering medication (e.g., insulin) via a wearable pump having a patch-style form factor for adhesion to a user's body. The reusable pump may be coupled to a disposable cap housing a microdosing system for delivering precise, repeatable doses of medication to a cannula configured to deliver medication to a target infusion area beneath the user's outer skin layer. The system further may include an applicator for inserting the cannula into the user's skin and/or applying an adhesive pad to the skin.

Delivery systems and methods for forming and delivering biomaterials from two components are described herein. In particular, apparatus and methods for performing controlled delivery of multicomponent delivery of biomaterials into or onto a body part, such as a body lumen are described. More specifically, in some embodiments, the apparatus and methods are directed towards controlled delivery of micro-volumes of biomaterials into or onto a target location, the micro-volumes being defined as 0.001 mL-1 mL (or 1 μL-1,000 μL) of volume.

A system for controlling a fluid injection system is disclosed. The system includes at least one processor programmed or configured to determine at least one characteristic of a power injection protocol, where the at least one characteristic of the power injection protocol is associated with a medical fluid involved in the power injection protocol, determine an estimated value of viscosity of the medical fluid based on the at least one characteristic of the power injection protocol, calculate a hydraulic resistance score based on the estimated value of viscosity of the medical fluid, and determine one or more motor controller gains of a motor of a powered fluid injector in the power injection protocol based on the hydraulic resistance score.

The invention relates to a medical high-pressure injector for injecting a liquid provided in a syringe (2.1, 2.2) into a patient, wherein the injector has at least one syringe holder (10) with an associated drive unit for the syringe (2.1, 2.2) held therein as well as connecting lines for transmitting the liquid from the syringe (2.1, 2.2) into a patient tube and/or for filling the syringe (2.1, 2.2) that is held in the syringe holder (10), wherein the connecting lines are embodied in an interchangeable control cassette (3) and the injector has a cassette holder (11) with a receiving chamber (110) that can be opened and closed, into which the control cassette (3) can be inserted.

An embodiment includes a system comprising: an artery, a vein, and a nerve; a first length of tubing adjacent at least one of the vein, artery, and nerve; a second length of tubing to couple to the first length of tubing; and a pump comprising a number of actuators; wherein when the system when operating is configured such that (b)(i) the second length of tubing couples to at least one of the number of actuators, (b)(ii) ends of the first and second lengths of tubing are closed, (b)(iii) a second end of the first length of tubing is operatively coupled to a second end of the second length of tubing, (b)(v) the pump pulsates fluid within the first length of tubing in response to the number of actuators intermittently contacting the second length of tubing.

An infusion system and pump with configurable closed loop delivery rate catch-up including an infusion system having a medication management unit and a medical device. The medication management unit has programming code to: provide a graphical user interface for modifying a drug library; receive a catch-up rate factor; update the drug library with the catch-up rate factor; and transmit the updated drug library to the medical device. The medical device has programming code to: receive the updated drug library; receive a desired infusion rate; calculate expected accumulated infusion volume from the desired infusion rate; request delivery of the infusion at the desired infusion rate; determine actual accumulated infusion volume at a particular time; increase the infusion rate by the catch-up rate factor to generate a catch-up infusion rate when at the particular time the actual accumulated infusion volume is less than expected; and request infusion at the catch-up infusion rate.

A fluid switching valve including a first elastic tube that delivers a first fluid; a second elastic tube that delivers a second fluid; a third elastic tube having one end connected to the first and second elastic tubes; and a switching member that, by displacing a protruding portion, switches between a first state in which the first elastic tube is constricted and the second fluid is delivered to the third elastic tube, a second state in which the second elastic tube is constricted and the first fluid is delivered to the third elastic tube, a third state in which the first and second elastic tubes are both constricted and introduction of fluid to the third elastic tube is cut off, and a fourth state in which neither the first nor second elastic tube is constricted and both the first and second fluids are delivered to the third elastic tube.

A method for discharging fluid from a syringe and for mitigating occlusion conditions includes actuating the plunger of a syringe into a barrel. The method monitors fluid pressure within the barrel of the syringe and determines that an occlusion exists when the fluid pressure exceeds a predetermined threshold. The method actuates the plunger out of the barrel by a predetermined amount in response to the detected occlusion and actuates the plunger of the syringe into the barrel until a measured fluid pressure within the barrel of the syringe exceeds another predetermined threshold.

A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.