A device for filling a reservoir. The device includes a cover portion comprising a septum window, and a bottom portion, the bottom portion configured to attach to a disposable housing assembly comprising the reservoir, wherein the cover portion and the bottom portion are rotatably attached in a locked configuration and wherein in a locked configuration, a septum is obscured through the septum window, wherein when the cover portion and the bottom portion are placed in an unlocked configuration, the cover portion rotates with respect to the bottom portion and the septum is visible through the septum window.

A pump for the pumping small volumes of medical fluid is provided. The pump has a manifold chamber having an inlet port and an outlet port. Within the manifold chamber, a cannula having input and output holes oriented with respect to the inlet and outlet ports is rotated within the manifold chamber, and translated axially in a reciprocating manner. The input opening of the cannula overlaps with the inlet port as the manifold chamber volume is increasing to draw fluid into the manifold chamber from the input port. The output opening of the cannula chamber overlaps with the output port as the manifold chamber volume is decreasing to force fluid out of the manifold chamber to the outlet port. The cannula may be formed from metal needle stock.

A pump including a disposable component including a disposable component inlet port coupled to a first disposable conduit in fluid communication with a fluid medium source, wherein the first disposable conduit includes a disposable piston pump assembly and a disposable bubble eliminator, and the first disposable conduit is in fluid communication with a disposable component outlet port, wherein the disposable bubble eliminator is in fluid communication with a lumen of the first disposable conduit and is operable to reduce a gas content of a fluid medium; wherein the disposable piston pump assembly is operable to pump the fluid medium from the disposable component inlet port, through the first disposable conduit and the disposable bubble eliminator, to the disposable component outlet port; and a reusable component including a reusable movable stage operable to compress the disposable piston pump assembly; and a reusable mechanical actuator operable to drive the movable stage.

A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.

Embodiments of the present disclosure provide a system and method configured to provide feedback to a user during a refill procedure for an implantable medical device via an external refilling apparatus through the use of resilient tactile feedback element within the refill port chamber that provides tactile feedback to a user of a refill needle of a location of the needle within the refill port.

A method for filling a reservoir a filling assembly having a needle, and a fluid. The reservoir is in a disposable housing assembly with a septum fluidly connected to the reservoir, a septum access assembly having a first position covering the septum and a second position providing access to the septum, and a bias mechanism for biasing the septum access assembly to the first position. The method includes piercing the septum with the needle, inserting fluid to the reservoir through the needle, contacting the filling assembly to the septum access assembly, and removing the needle from the septum. Removing the needle from the septum allows the bias mechanism to move the septum access assembly from the second position to the first position. The disposable housing assembly is attached to a reusable housing assembly.

A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.

Provided is a flow rate control device for supplying liquid chemicals. The device according to an embodiment of the present disclosure includes a housing unit which is placed at the location from which liquid chemicals are supplied and comprises an inflow conduit on one side to which the liquid chemicals flow in and an outflow conduit from which the flowed-in liquid chemicals whose flow rate is controlled flow out; and a control unit which is integrated with the housing unit and comprises an inflow space which comes in contact with an inflow hole at a terminal portion of the inflow conduit, an outflow space which comes in contact with an outflow hole at a terminal portion of the outflow conduit and a control path which is connected between the inflow space and the outflow space to control the flow rate of the flowed-in liquid chemicals, wherein the control path has a controlled inner diameter and a controlled length according to the flow rate a use r aims at.

A micro dosing device is presented for delivering a metered dose of a therapeutic fluid having a dosing unit with a dosing chamber, a connector unit at a distal end for fluidly connecting a medicament container to the dosing chamber, a connector unit at a proximal end for fluidly connecting the dosing chamber to a medicament delivery member, and an activation mechanism, wherein the dosing chamber is configured to receive and therapeutic fluid. Further, the micro dosing device can have a dosing mechanism which provides an exactly metered dose of fluid to be expelled by the medicament delivery member, when the activation mechanism is triggered by a user.

Intrathecal drug delivery pumps can aspirate cerebrospinal fluid (CSF) when the drug reservoir is empty or at other times to maintain a continuous or cyclic fluid flow through the pump and the delivery catheter. This addresses the potential need for continuous infusion to maintain an un-occluded fluid pathway to the intrathecal space by providing an “active port” that aspirates and expels CSF to keep fluid flow going without infusing a drug or requiring saline to fill the pump. If drug refill visits are missed, CSF could be used to keep the pump mechanism functional rather than having it run dry requiring replacement or requiring saline injections to keep the pump mechanism functioning. In addition, by having the pump aspirate CSF into the body of the pump, it would be possible to monitor biomarkers using systems in the fluid pathway and pressure differences for possible issues related to CSF management.