Unl Holdings LLC

Unitract Syringe Pty Ltd

Stefanie A Hurowitz

Arthur G Marlin

Kevin Lee Bokelman

David R Jansen

Thomas F McGee

George M Wohlhieter

Ellen Ni Chathail

William King

Thomas F Mcgee

An automatic injector includes a housing having a guide, a drive control mechanism, a transmission assembly, a motor, and an energy source. The housing may further include a cartridge cover. A drive control mechanism includes a drive screw, a cartridge carrier, a plunger carrier, and one or more control transfer instruments, such as a puck or cylinder. The drive screw interfaces and connects with the plunger carrier. The automatic injector is configured to accept a variety of syringes as cartridges for drug delivery. The cartridges may be ejected from the injector and safely disposed after use, making the injector a reusable automatic injector. The reusable automatic injector may further include one or more sensors, such as a cartridge sensor and a patient sensor. The novel incorporation of the drive control mechanisms into the automatic injectors of the present invention enables a single motor and transmission assembly to drive the function of multiple components, which may include the steps of: preparation and alignment of a cartridge for injection, removal of a safety cap or needle shield, needle injection, drug dose delivery, and syringe and/or needle retraction. Methods of manufacture and methods of use are also disclosed.

Drive control mechanisms and automatic injectors for injectable cartridges

A skin sensing system for a drug delivery device includes a control unit and a skin sensor comprising one or more electrodes. The skin sensor may be configured to store a threshold value associated with skin sensing, receive one or more sensed signal values from the one or more electrodes, compare the one or more sensed signal values with the threshold value, and based on the comparison, transmit a resultant signal to the control unit. The resultant signal is used by the control unit to determine whether a skin surface of a user is substantially proximate to the skin sensor upon receiving the resultant signal. A drug delivery device for sensing contact with the skin includes the skin sensing system. When the skin sensor senses that the drug delivery device is in contact with a patient's skin surface, drug delivery from the device may be permitted.

Skin sensors for drug delivery devices

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Fort Washington, PA, United States of America

Stefanie A Hurowitz