The invention discloses a miniature closed-loop artificial pancreas system, comprising: infusion unit configured to deliver drugs; program unit comprising input end and output end, and the input end comprises a plurality of electrically connective regions for receiving signals of analyte data in the body fluid, after the output end is electrically connected to the infusion unit, according to the received signals of analyte data in the body fluid, the program unit controls whether the infusion unit delivers drugs; an infusion cannula with conductive area, the infusion cannula is the drug infusion channel; and a plurality of electrodes for detecting analyte data in body fluid, the electrode comprising conductive-area electrode and cannula-wall electrode, and one or more cannula-wall electrodes being located on/in the wall of the infusion cannula. It takes only one insertion to perform both analyte detection and drug infusion.

The present disclosure relates to a medicament delivery device. The medicament delivery device comprises a housing, a needle, a medicament delivery mechanism and an actuator. The actuator is moveable relative to the housing from an initial position to an intermediate position such that the actuator exerts a force on the first locking member to urge the first locking member from a locked state to an unlocked state wherein the first biasing member moves the needle from a retracted position to an extended position. The actuator is moveable relative to the housing from the intermediate position to a second position such that the actuator exerts a force on the second locking member to urge the second locking member from a locked state to an unlocked state wherein the second biasing member moves the dispensing member within the housing to dispense medicament from the reservoir when the reservoir contains medicament.

The present invention relates to an apparatus for patient-controlled drug injection having a counter capable of counting the number of administrations. According to one aspect of the present invention, disclosed is an apparatus for patient-controlled drug injection having a counter, comprising: a case; a pressing part, provided in the case, for applying pressure to pump a chemical liquid; and a counter, provided in the case and having a counting button that is pressed by pressure when a user presses the pressing part, for counting the number of times that the pressing part is pressed.

Provided is an epidural device configured to inhibit or substantially or completely prevent further progression of an epidural needle upon entry of the needle into the epidural space. When the needle is inserted into the ligamentum of the patient's back, the device may be pressurized with fluid using the resistance of the dense ligament to maintain pressure. This pressurization may lock a pushing mechanism in place relative to the needle such that the pushing mechanism can be used to advance the needle. Once the epidural space is reached, the fluid (e.g., saline or air) enters the epidural space, and the release of pressure may cause the trigger mechanism to disengage from the sliding pusher, allowing the pusher to slide along the body of the construct. The device thus may provide the ability to detect the epidural space using pressure loss while preventing the needle from advancing into the dura once the space is reached. In a preferred aspect, the device may prevent premature triggering when there is a slow flow of fluid from the epidural

A gas extraction device for a fluid delivery apparatus includes a first layer and a vent membrane coupled to the first layer. The vent membrane enables a gas to pass through the vent membrane and prevents a fluid from passing through the vent membrane. The gas extraction device also includes a second layer coupled to the vent membrane opposite the first layer. The second layer has a first channel formed therethrough. In addition, the gas extraction device includes an impermeable membrane coupled to the second layer opposite the vent membrane. The first channel is configured to receive a fluid having a gas dispersed therein. The fluid is pressurized to move the fluid through the first channel against the vent membrane and to move the gas through the vent membrane.

A pump for delivering a fluid includes a pump housing that defines at least one reservoir having a circumferentially open first end, a circumferentially closed second end and a chamber to receive the fluid. The pump includes a plunger assembly having at least one plunger arm and a cannula fluidly coupled to the plunger arm to dispense the fluid from the pump. The plunger arm is receivable within the first end of the reservoir, and the at least one plunger arm defining an internal conduit to receive the fluid from the at least one fluid reservoir. The internal conduit is fluidly coupled to the cannula. The plunger assembly is movable in a first direction relative to the pump housing to advance the plunger arm within the fluid reservoir to dispense the fluid from the fluid reservoir out of the pump via the cannula.

Apparatus for delivering a quantity of fluid to bone marrow of a bone or providing access to remove fluids from a target site is provided. The apparatus may include a driver, a plunger operating and cartridge assembly mechanism, a cartridge assembly having a fluid reservoir and a bone penetrating needle.

Some embodiments of an infusion pump device may include a drive system that accurately and incrementally dispenses fluid from the pump device in a controlled manner. Particular embodiments of the drive system may include a rotational motor that is coupled to a string member, which is used to adjust a pawl relative to a ratchet body. In such circumstances, the drive system can provide a reliable and compact infusion pump device that accurately dispenses the desired volume of fluid.

A pump device (1) for administering a medical fluid to a patient comprises a holding device (10) for receiving a syringe barrel (20) of a syringe (2), the holding device (10) comprising a stationary section (101) and a holding member (11) movable with respect to the stationary section (101) between an opened position and a closed position, wherein the holding member (11) is configured to secure, in the closed position, the syringe barrel (20) of a syringe (2) received on the holding device (10) with respect to the stationary section (101). A shaft (130) is coupled to the holding member (11), the shaft (130) being constituted to rotate during a movement of the holding member (11). Herein, a damping device (14) comprises a movable part (140) connected to the shaft (130) and rotatable together with the shaft (130) and a stationary part (141) fixed with respect to the stationary section (101) of the holding device (10), a rotational movement of the movable part (140) with respect to the stationary part (141) providing for a damping of the movement of the holding member (11). In this way a pump device for administering a medical fluid to a patient is provided which may provide for a secure fastening of a syringe barrel and at the same time helps to avoid a damaging of in particular smaller syringes by clamping forces of the holding member.

A fluid infusion device, for delivery of a medication fluid to the body of a user, includes a housing, a fluid reservoir for the medication fluid, a dosing mechanism, an infusion component, and a mechanical actuator. The fluid reservoir and the dosing mechanism are located in the housing, and the dosing mechanism is coupled to receive the medication fluid from the fluid reservoir. The dosing mechanism has an adjustable fluid chamber that defines a variable dosage volume. The infusion component is coupled to the dosing mechanism to receive the medication fluid from the adjustable fluid chamber. The mechanical actuator is coupled to the dosing mechanism such that operation of the mechanical actuator causes the medication fluid to be expelled from the adjustable fluid chamber to the infusion component.