A multistage gas-actuated drug supply device is connected to a drug injection container, the features include a gas supply unit, providing a gas; a plunger unit, composed of a plurality of hollow tubes, one end is connected to the gas supply unit, the hollow tubes can be stretched by the gas; a plunger top, connected to the other end of the plunger unit, pushing a medicament as the hollow tubes stretch; a gas chamber, penetrating the plunger unit, connected to the gas supply unit, holding the gas and stretching the hollow tubes as the gas increases, the gas chamber is further expanded; a limit part, located in the coupling end of the connected hollow tubes, limiting the collapsing length of the hollow tubes; and an airtight piece, located in the coupling end of the connected hollow tubes, sealing the gas chamber.

A fluid delivery device comprises a fluid reservoir for containing medicament. The fluid reservoir is sealed proximate one end with a sliding seal piston. A delivery path is configured to fluidly couple the fluid reservoir and a patient wearing the fluid delivery device. A basal engine mechanism is configured to directly or indirectly move the sliding seal piston in the fluid reservoir at a controlled basal rate. A bolus mechanism configured to move the basal engine relative to the fluid reservoir and directly or indirectly move the sliding seal piston in the fluid reservoir a discrete bolus amount at a time.

A miniature delivery system includes a base; a pumping mechanism attached to the base; and a housing having needles, the housing being attached to the base so that the pumping mechanism is enclosed by the housing. The needles are configured to not buckle or break when pressed directly into a skin or organ of a human to which the miniature delivery system is attached to, and the pumping mechanism is configured to pump a fluid from the housing into the skin or organ, through the needles.

An inverted battery device has a pair of electrodes, first and second volumes, and an electrical conductor. One of the pair of electrodes is configured as an anode and the other is configured as a cathode. A first electrolyte solution and the anode are disposed in the first volume, while a second electrolyte solution and the cathode are disposed in the second volume. The electrical conductor extends between the first and second volumes to couple the pair of electrodes to each other such that electrons travel between the pair of electrodes. The device is constructed to produce ions rather than electrons such that an ionic current can be generated in a separate system, such as a biological system or other ionic system, when coupled between the anode and cathode.

Electrolytic gas generator and multi-functional current collector for use in same. In one embodiment, the current collector is constructed both to conduct current from an electrode to a conductive lead and to conduct gas generated at the electrode to external tubing. Accordingly, the current collector may be formed by bonding together a top metal plate and a bottom metal plate of similar profiles, each of which may be shaped to include a main portion and a lateral extension. The bottom metal plate may have central through hole in the main portion for receiving gas from the anode. The top metal plate may have a recess on its bottom surface. The recess may have a first end aligned with the through hole on the bottom metal plate and may have a second end at the end of the lateral extension. A lead and tubing may be attached to the lateral extension.

An electrochemical pump adopts a hybrid pulse to intermittently activate an electrochemical reaction. The abovementioned electrochemical pump can save power effectively to prolong the lifetime of the electrochemical pump. In addition, an electrochemical pump increases the bonding strength between electrodes and a substrate by covering edges of the electrodes with an insulating layer to avoid electrode delamination caused by high-power electrochemical reactions. A delivery device using the abovementioned electrochemical pump is also disclosed.

A substance delivery device is disclosed. The substance delivery device includes a lever that includes a drive arm that is rotatable about a pivot. The substance delivery device also includes a pump that has a deformable chamber. The deformable chamber is configured to rotate the drive arm about the pivot towards a container so as to deform the container to drive a fluid substance from the container.

Systems and methods for delivering a medication to a person experiencing an emergency medical event without requiring intervention or action on the part of the person. A device encases a reservoir of medication and a delivery mechanism. Sensors in the housing sense a physical attribute of the person and circuitry monitors information collected by the sensors to determine if the person is experiencing a severe medical condition or event based on the information. An input device on or in the housing, such as a button, may be used or activated by the person if the detected condition or event is a false positive to cancel further action. If the system does not include the button or if the user does not press it in time, the system activates the delivery device and injects the medication into the person.

A micro-delivery device includes a substrate having an upper surface; a shell disposed on the upper surface of the substrate and defining a chamber between the shell and the substrate; a planar electrode disposed on the upper surface of the substrate; a separator disposed in the chamber and dividing the chamber into an upper reservoir and a lower reservoir; and a cannula inserted in an opening of the rigid shell and in fluid communication with the upper reservoir.

A medicament delivery device comprises a delivery assembly for transdermally delivering medicament to a patient and a system for providing information on the volume of medicament in the device. The system comprises a sensing unit configured to measure at least one physical parameter dependent on the volume of medicament in the device.