West Pharma. Services Il, Ltd.

Caught Stealing LLC

Jason W Farris

Ran Hezkiahu

Jorge Santos

Samuel Dauphinais

Caleb F Balbuena

Tommy Gene Davis

Anthony G Esposito

Marla Meyer

Matthew C Ceriani

Matthew S Ceriani

An injector includes a needle movable from a retracted position to an injection position. A rotary biasing assembly is stabilized in a stored energy state and releasable into an energy releasing state and includes a cam. A cam follower couples the rotary biasing assembly with the needle and is configured to transform rotation of the rotary biasing assembly in the energy releasing state thereof into translation of the needle from the retracted position to the injection position. An activation switch is rotatable from an unactivated position, stabilizing the rotary biasing assembly in the stored energy state thereof, to an activated position, releasing the rotary biasing assembly into the energy releasing state thereof. An activation button is movably mounted to the injector housing and is translatable from an unactuated position to an actuated position, whereby the translation rotates the activation switch from the unactivated position to the activated position thereof.

Injection needle insertion mechanism for injector

Sensor

A telescopic screw assembly for an injector includes an inner screw, an outer screw and a middle screw. The middle and outer screws are in a first threaded engagement, and the inner and middle screws are in a second threaded engagement. The inner screw is nested with the middle screw and the middle screw is nested with the outer screw in a contracted configuration of the screw assembly. Rotation of the outer screw in one direction advances the middle screw relative to the outer screw via the first threaded engagement and advances the inner screw relative to the middle screw via the second threaded engagement to telescopically extend the screw assembly into an expanded configuration. At least two of the inner, middle and outer screws are identified with a different visual indicator to enhance visual distinction between the screws, and readily visually indicate an extension progress of the screw assembly.

Staged telescopic screw assembly having different visual indicators

An assembly for advancing a piston through a rotationally fixed cartridge includes a rotatable, axially fixed first member and an axially movable, rotatable second member connected thereto via a threaded connection and connectable to the piston. A friction pad is rotationally fixedly connected with the second member and includes first and second sets of fingers extending radially outwardly from a central disk. Both the first and second sets of fingers are configured to contact an interior side wall of the cartridge. The first set of fingers are angled toward a first rotational direction and are configured to wedge the friction pad between the side wall and the second member upon rotation of the first member in the first direction, thereby substantially preventing rotation in the first direction. The second set of fingers are angled toward a second rotational direction and are configured to substantially prevent rotation in the second direction.

Bi-directional rotation resistant friction pad

An injection assembly includes a housing with a barrel positioned within the housing. The barrel includes an axis extending from a proximal end to a distal end thereof and a chamber for storing medicine. An elongate anti-rotation shaft is rotationally fixed to the housing and has a non-circular cross-section. The injection assembly includes an inner screw having an inner screw opening to complementarily receive the anti-rotation shaft to prevent rotation of the inner screw with respect to the anti-rotation shaft but allow respective linear translation along the axis. An outer screw is positioned within, and rotatable with respect to, the housing and has an outer screw opening to threadably receive the inner screw, wherein rotation of the outer screw translates the inner screw along the axis and along the anti-rotation shaft. A plunger is coupled to the distal end of the inner screw and is moveable with respect to the chamber to push the medicine out of the chamber when the outer screw is rotated.

Anti-rotation mechanism for telescopic screw assembly

Growing community of inventors

Gilbert, AZ, United States of America

Jason W Farris