A system and method for calibrating an IV pump infusion system tube comprises a fluid source, an infusion system comprising, an IV pump, a drive unit, a chamber with known constant volume, a control unit, and IV tubing with a known inner diameter tolerance, and a set of conductive plates. The system administers medicinal fluid, calculates the flow rate of the medicinal fluid in the chamber by measuring the time the capacitance level of the medicinal fluid changes from a capacitance level corresponding to a first (initial) position to a capacitance level corresponding to a second (filled) position, compares the calculated flow rate with a set flow rate of the IV pump input in the control unit prior to infusion, and adjusts the IV pump and flow rate based on the compared deviations for more accurate delivery to a patient. This configuration may therefore provide a more precise delivery rate.

A first open/close valve (12a), a drip chamber (14), and a variable valve (17) are provided in this order on a first flow path (10a) from a first connector (11a) side toward a downstream connector (19) side. A second flow path (10b), on which a second open/close valve (12b) is provided, is connected to a section of the first flow path between the first open/close valve and the drip chamber. A priming method includes a first step of causing the first liquid to flow from a first container (20a) into the first flow path and priming the first flow path using the first liquid, and a second step of causing the second liquid to flow from a second container (20b) into the second flow path and priming the second flow path using the second liquid. In the second step, the second liquid moves air that has been present in the second flow path toward the first container (20a).

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.

A system is disclosed. The system includes a reservoir for containing a fluidic medium, the reservoir including a front surface, a resilient cylindrical flexure portion connected to the front surface, the resilient cylindrical flexure portion comprising an accordion-like structure that is able to expand and contract to change an interior volume within the resilient cylindrical flexure portion, a central passageway within the resilient cylindrical flexure, and a collection chamber connected to the central passageway. Also, a system including a reservoir, a plunger head located within the reservoir, a plunger arm connected to the plunger head, a driving shaft connected to the plunger arm, and a motor connected to the driving shaft, the motor controllable to move the drive shaft in a first motion and a second motion so as to move the advance plunger head and retract the plunger head within the reservoir.

The present disclosure provides a priming device, the priming device including: a housing having a proximal end and a distal end, the housing defining an axial direction extending substantially from the proximal end to the distal end; and a membrane disposed at the proximal end, wherein the housing defines a fluid communication channel extending substantially axially from an interior surface of the membrane towards the distal end and a filter disposed at the distal end of the housing, the filter being configured to allow a passage of air. In another aspect, there is provided a priming device having an adapter.

A fluid management and medical device system may include a fluid management system and a medical device having one or more sensors proximate the distal end of the elongate shaft of the medical device. The controller of the fluid management system may be configured to calculate a fluid deficit when the distal end of the elongate shaft is disposed within a patient and configured to automatically pause fluid deficit calculation when the distal end of the elongate shaft is removed from the patient. In some instances the controller is configured to calculate the fluid deficit using rotational speed of the inflow pump in combination with a difference between a change in weight of a fluid supply source supplying fluid to the fluid management system and a change in weight of a collection container collecting fluid from the fluid management system.

Fill stations and base stations are provided for personal pump systems. The fill stations may be opened and closed to accept a reservoir and to allow fluid to be introduced into the reservoir for use with personal pump systems. The fill stations may hold the reservoir at a tilt relative to an underlying surface and may discourage overfilling of the reservoir. The filling stations may also include viewing windows having fluid lines marked thereon for indicating volume of fluid within the reservoir.

A drug injection device (102) comprising: a cartridge (104) configured to hold a volume of a drug; one or more processors (120) configured to operate in at least an enabled state and a sleep state, wherein the one or more processors (120) are configured to control an operation of the drug injection device (102) while the one or more processors (120) are in the enabled state; a member (115) disposed in the cartridge (104), the member (115) including at least two conductive surfaces (122) electrically connected to the one or more processors (120); and a drive mechanism (106) including a conductive element (124) spaced from the at least two conductive surfaces (122), wherein the one or more processors (120) are configured to enter the enabled state from the sleep state when the conductive element (124) makes electrical contact with the at least two conductive surfaces (122).

A device which regulates the flow of a medical liquid includes a first and a second body, the first body featuring a first passage fluidly connected to a regulation channel, the second body featuring a second passage which may be positioned at a desired point of the regulation channel and set, during use, in fluid passage communication with the first passage by means of the regulation channel. The device includes a limiter which, once engaged, can no longer be disengaged during normal use of the regulation device, the first body or the second body featuring at least a first stop, and the limiter, when engaged, encountering the first stop in order to prevent the second passage being positioned in a predetermined portion of the regulation channel and/or at the first passage.

A valve and a method for administering a plurality of drug fluids to a patient are disclosed. For each drug fluid, the valve may be rotated into a selected drug position associated with the drug fluid. With the valve being in the selected drug position, a backpriming may be performed of a connector line of a drug container containing the drug fluid. Thereafter, the drug fluid may be administered with the valve being in the same selected drug position. Thereafter, the valve may be flushed, optionally while maintaining the same selected valve position.