Abstract: In an aspect, a system for determining a liquid level in a drug delivery device is presented. The system includes a first spring and a second spring positioned adjacent the first spring. The system includes a rod configured to compress at least the first spring and contact the second spring. The system includes a sensing element in communication with the first spring and the second spring. The sensing element is configured to detect a difference in voltage of at least the first spring. A difference in voltage of at least the first spring corresponds to an amount of liquid drug of the drug delivery device.

Abstract: Disclosed herein is a double reservoir configuration for a pumping mechanism for a drug delivery device wherein one reservoir is rigidly fixed to a housing of the device and the other reservoir moves linearly translates with respect to the fixed reservoir. To avoid having either the input fluid port or the output fluid port moves as the second reservoir linearly translates, one port is in fluid communication with the fixed reservoir and a second fluid port is in communication with the moving reservoir via a hollow tube supporting a static plunger disposed within the moving reservoir. This arrangement provides for the added benefit of allowing air trapped within either of the reservoirs to be almost completely removed as the pump mechanism is filled with the fluid.

Abstract: Fluid delivery devices with sterilization management systems are described.

Abstract: Disclosed herein is a double reservoir configuration for a pumping mechanism for a drug delivery device wherein one reservoir is rigidly fixed to a housing of the device and the other reservoir moves linearly translates with respect to the fixed reservoir. To avoid having either the input fluid port or the output fluid port moves as the second reservoir linearly translates, one port is in fluid communication with the fixed reservoir and a second fluid port is in communication with the moving reservoir via a hollow tube supporting a static plunger disposed within the moving reservoir. This arrangement provides for the added benefit of allowing air trapped within either of the reservoirs to be almost completely removed as the pump mechanism is filled with the fluid.

Abstract: Fluid delivery devices with sterilization management systems are described.

Abstract: A delivery system of an automated medicament delivery device for automated administration of medicament to a user-body is disclosed. The delivery system includes a reservoir and a delivery mechanism. The reservoir includes a sidewall defining an internal volume therein. The delivery mechanism includes a piston and a rod. The piston is received in the internal volume and includes a body, a seal, and at least one protrusion. The seal is received around a perimeter of the body and forms a seal between the body and the sidewall. The at least one protrusion extends from the body beyond the perimeter and towards the sidewall. The rod connects to the body. The delivery mechanism is configured to cause a friction bias between the seal and the sidewall around the perimeter of the body during movement of the piston relative to the reservoir.

Abstract: Needle insertion mechanisms include arrangements of components, such as one or more of springs, actuator arms, or rails, that are configured to reduce and improve one or more of size or shape of the needle insertion mechanism and maintain the efficiency of the insertion and retraction actions thereof.

Abstract: In an aspect, a system for determining a liquid level in a drug delivery device is presented. The system includes a first spring and a second spring positioned adjacent the first spring. The system includes a rod configured to compress at least the first spring and contact the second spring. The system includes a sensing element in communication with the first spring and the second spring. The sensing element is configured to detect a difference in voltage of at least the first spring. A difference in voltage of at least the first spring corresponds to an amount of liquid drug of the drug delivery device.

Abstract: A drug delivery drive mechanism including a ratchet wheel including a plurality of teeth, a ratchet arm including a first prong and a second prong, wherein the first prong is operable interact with a tooth of the plurality of teeth to rotate the ratchet wheel in a circular direction, and the second prong is operable to interact with another tooth of the plurality of teeth to further rotate the ratchet wheel in the circular direction.

Abstract: Disclosed are techniques for managing the application of a force by a drive mechanism in a drug delivery device as well as devices for implementing the disclosed techniques. One or more driving arms may be operable to drive a respective ratchet wheel and one or more sensor contacts may be positioned to determine when a respective driving arm is to be controlled to no longer drive the respective ratchet wheel thereby saving electrical power. The disclosed techniques and devices may be incorporated in a drug delivery device, such as those carried by a person or affixed to the skin of a person.

Abstract: A drug delivery drive mechanism including a ratchet wheel including a plurality of teeth, a ratchet arm including a first prong and a second prong, wherein the first prong is operable interact with a tooth of the plurality of teeth to rotate the ratchet wheel in a circular direction, and the second prong is operable to interact with another tooth of the plurality of teeth to further rotate the ratchet wheel in the circular direction.

Abstract: Disclosed herein are various embodiments of clutching mechanisms applicable to a dual reservoir pumping mechanism for a drug delivery device, the clutching mechanisms serving to allow translation of one of the reservoirs during the filling process and thereafter connecting the reservoirs together such that one can be driven relative to the other one by means of a leadscrew or other driving mechanism.

Abstract: In exemplary embodiments, an on-body medical device has an adhesive layer with adhesives of two or more strengths. In some of the exemplary embodiments, a stronger adhesive is positioned on the adhesive layer where additional strength is needed, such as around the perimeter of the adhesive layer to prevent premature peeling. A weaker adhesive is positioned on other portions of the adhesive layer where there is no need for the strength of the stronger adhesive. In other exemplary embodiments, three strengths of adhesives are used on the adhesive layer. An intermediate strength adhesive is used along with a stronger adhesive and a weaker adhesive. The intermediate strength adhesive may be used in areas where the weaker adhesive does not provide enough strength but the full strength of the stronger adhesive is not needed.

Abstract: Disclosed are techniques, devices and systems that provide a rotary solenoid micro actuator that has a rotary solenoid core with dual magnetic drive coils and magnetic field focusing elements. One or more examples may also include a spring return and other examples may include two sets of drive coils to push and pull on at each magnetic gap. The magnetic field focusing elements are operable to increase the magnetic field. The rotary solenoid micro actuator is configured to cause a liquid drug to be expelled from a drug delivery device.

Abstract: Disclosed herein is a double reservoir configuration for a pumping mechanism for a drug delivery device wherein one reservoir is rigidly fixed to a housing of the device and the other reservoir moves linearly translates with respect to the fixed reservoir. To avoid having either the input fluid port or the output fluid port moves as the second reservoir linearly translates, one port is in fluid communication with the fixed reservoir and a second fluid port is in communication with the moving reservoir via a hollow tube supporting a static plunger disposed within the moving reservoir. This arrangement provides for the added benefit of allowing air trapped within either of the reservoirs to be almost completely removed as the pump mechanism is filled with the fluid.

Abstract: Embodiments of the present disclosure relate to techniques, processes, devices or systems for pump devices. In one approach, a wearable drug delivery device may include a reservoir configured to store a fluid, the reservoir including a housing defining an interior chamber. The wearable drug delivery device may further include a drive device for driving the fluid from the reservoir, the drive device including a plunger head within the interior chamber of the housing, and a plunger shaft extending from the plunger head. The plunger shaft may include a first component adjacent a second component, wherein during movement of the plunger head in a first direction the first and second components engage one another to form a rigid portion of the plunger shaft, and wherein during movement of the plunger head in a second direction, opposite the first direction, the first and second components are separated from one another.

Abstract: Disclosed herein are drug delivery devices and methods for component positioning of a pump, such as a linear shuttle pump. In some approaches, a system may include first and second terminals movable with respect to one another, and a sensor device operable to detect a change in capacitance between the first and second terminals as the first and second terminals move with respect to one another. The sensor device may include a two-stage charger connected with a controller and a voltage source, the two-stage charger having a first capacitor connected with a first switch and a second capacitor connected with a second switch, the controller being operable to close the first switch to connect the first capacitor with the voltage source to charge the first capacitor, and open the first switch and close the second switch to connect the second capacitor with the voltage source to charge the second capacitor.

Abstract: Fluid delivery devices with sterilization management systems are described.

Abstract: A novel embodiment of a pump mechanism, for example, of the type that would be used in a wearable drug delivery system, comprises, in a preferred embodiment, a reservoir, a plunger, disposed within the reservoir and driven by a coiled flexible linkage connected to a drive mechanism, such that a force imparted by the drive mechanism causes the coiled flexible linkage to uncoil, causing a linear translation of the plunger through the reservoir to force a liquid drug contained within the reservoir through a fluid port to a patient.

Abstract: Disclosed is a valve for use in a pump for a wearable drug delivery device for moving a liquid drug from reservoir into a pump chamber and thereafter from the pump chamber to a patient interface. The valve can comprise two needles, a first needle in fluid communication with the reservoir and a second needle in fluid communication with the patient interface. The first and second needles may be linearly translated to either cover the lumen opening of a needle with a septum or place the lumen opening of the needle in fluid communication with the pump chamber. When the first needle is in fluid communication with the pump chamber, the liquid drug may be transferred from the reservoir to the pump chamber via suction created by a plunger in the pump chamber. When the second needle is in fluid communication with the pump chamber, the liquid drug may be transferred from the pump chamber to the patient interface via a pressure created by the plunger in the pump chamber.