Delivery pumps for providing a bolus or blenderized diet to enterally fed mammals are provided. A delivery pump according to the present disclosure is manually operated, and does not require mechanically powered operation. A delivery pump according to the present disclosure also has a size sufficient to contain an entire bolus or blenderized diet feeding, and is shaped to allow filling of the reservoir with a bolus or blenderized diet by a user. The present disclosure also includes a method of providing a bolus or blenderized diet to a mammal.

A pump for treating a patient is disclosed that includes a spring-biased plunger biased toward actuation against a tube; a cam shaft configured to actuate the spring-based plunger; a lever actuatable between a closed position and an open position; a shaft coupled to the lever, the shaft having a central axis centrally along the length of the shaft, the shaft coupled to the lever to rotate around the central axis in accordance with actuation of the lever; and a lift cam pivotally coupled to the shaft, wherein the lift cam pivots around a lift cam axis, the lift cam axis of the lift cam is parallel to the central axis of the shaft, and the lift cam engages with the spring-based plunger to lift the spring-biased plunger off of the cam shaft as the shaft rotates in accordance with actuating the lever to the open position.

Systems and methods for monitoring an operational state and/or a fill status of a drug container of a drug delivery device are provided. The drug container can hold a liquid drug. A plunger can be positioned within the drug container. A drive system can advance the plunger to expel the liquid drug from the container. A monitoring system can detect a movement and/or a position of the plunger and/or any component coupled to the plunger. The detection can enable determination of an amount of liquid drug that has been expelled and/or an amount of liquid drug remaining in the drug container. Dosing rates, flow rates, and dosage completion can also be determined.

An infusion device (3) for administering a medical fluid to a patient, comprises a housing (30) and a receptacle (300) arranged on the housing (30) for receiving a syringe (4), the syringe (4) having a barrel (41) for containing a medical fluid and a plunger (42) movable relative to the barrel (41) for delivering the medical fluid out of the barrel (41). A pusher device (32) is movable relative to the housing (30) for acting onto the plunger (42) for moving the plunger (42) relative to the barrel (41), and a drive mechanism (38) drives the pusher device (32). A coupling mechanism (36, 37) is operative to couple the plunger (42) to the pusher device (32) or to couple the pusher device (32) to the drive mechanism (38), and an actuation mechanism arranged on the pusher device (32) comprises an actuation element (33) for actuating the coupling mechanism (36, 37) between a coupling state and an uncoupling state. Herein, the actuation mechanism comprises a first threaded element (34) rotatable about a rotational axis (342) and a second threaded element (331) movable along the first threaded element (34), the second threaded element (331) being in threaded engagement with the first threaded element (34) such that the first threaded element (34) is rotated when the second threaded element (331) is moved along the first threaded element (34), wherein the actuation element (33) is actuatable to move the second threaded element (331) along the first threaded element (34), the first threaded element (34) being operatively connected to the coupling mechanism (36, 37). In this way an infusion device is provided which in an easy and comfortable manner allows a user to actuate a coupling mechanism, in particular for installing a syringe on a receptacle of the infusion device.

A liquid medication administration device includes a cylindrical body, a gasket, a plunger body that pushes a liquid medication out of the cylindrical body, an advancing mechanism that advances the plunger body, a drive mechanism that drives the advancing mechanism, a chassis member that supports at least the cylindrical body and the advancing mechanism, and a housing that houses the cylindrical body, the plunger body, the advancing mechanism, the drive mechanism, and the chassis member. The chassis member includes a first supporting portion that supports a distal surface of a first supported portion of the cylindrical body and a second supporting portion that supports a proximal surface of a second supported portion of the advancing mechanism.

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.

A rotary pump for a fluid metering system is provided. The rotary pump reciprocates, and is reversed by a signal from a limit switch that is deflected by an actuator arm on a rotating sleeve of the pump system.

Apparatus is described for administering a substance to a subject. A vial contains the substance and a stopper is disposed within the vial and is slidably coupled to the vial. A first threaded element is (a) rotatable with respect to the vial and (b) substantially immobile proximally with respect to the vial during rotation of the first threaded element. A second threaded element is threadedly coupled to the first threaded element. At least a distal end of the second threaded element is substantially non-rotatable with respect to the vial, and the distal end of the second threaded element defines a coupling portion that couples the second threaded element to the stopper. The first threaded element, by rotating, linearly advances the stopper and at least the distal end of the second threaded element toward a distal end of the vial. Other embodiments are also described.

There is described a patch pump comprising a cartridge, a power source, a pump system, a drug delivery device and a control system configured to operate in particular the pump system and the drug delivery device. The pump system comprises, on the one hand, a pump having a pump housing containing a pump piston and a valve piston and, on the other hand, a pump drive comprising a piston motor and a valve motor for driving the pump piston and the valve piston independently from each other through a first and a second transmission. The drug delivery device comprises a transdermal delivery system having a needle actuation mechanism configured for transdermal insertion of a cannula.

Apparatus is described for administering a substance to a subject. A vial contains the substance and a stopper is disposed within the vial and is slidably coupled to the vial. A first threaded element is (a) rotatable with respect to the vial and (b) substantially immobile proximally with respect to the vial during rotation of the first threaded element. A second threaded element is threadedly coupled to the first threaded element. At least a distal end of the second threaded element is substantially non-rotatable with respect to the vial, and the distal end of the second threaded element defines a coupling portion that couples the second threaded element to the stopper. The first threaded element, by rotating, linearly advances the stopper and at least the distal end of the second threaded element toward a distal end of the vial. Other embodiments are also described.