Versatile syringe platform
AssigneeGenentech, Inc.
InventorsLionel Vedrine, Steven N. Roe, Mukund Patel
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for medicament delivery. The apparatus may include, and the methods may involve, a delivery device for delivering a target amount of the medicament from a distal end of the device. The device may include a rod for moving a plunger that discharges the medicament from the distal end. The device may avoid or reduce deformation of the plunger during the discharge. The plunger motion may be stopped by detent that interacts with the rod. The apparatus and the methods may provide an operator indication of progress of stages of operation. The device may feature triggers corresponding to stages of medicament displacement from the device, such as pre-delivery stages, including priming.
Claims59
A medicament delivery device defining a longitudinal axis and having a distal end, the device comprising:
- a collar disposed coaxial with the longitudinal axis and that has:
- a boss;
- and
- a projection;
- and
- a plunger rod that is threadingly engaged, coaxially within the collar, with a proximal knob that has:
- a distal body having:
- an annular tract;
- and
- a longitudinal tract;
- and
- a proximal end section supporting, upon a distal portion of the proximal end section, a proximal terminal surface of the longitudinal tract;
- wherein, in operation:
- during a rotation of the knob about the longitudinal axis:
- the boss slidingly engages the annular tract to retain the knob longitudinally;
- and
- the projection slidingly engages the rod to prevent rotation of the rod while the rod moves toward the distal end;
- after the rotation of the knob, during a longitudinal translation of the proximal end section toward the collar, the boss slidingly engages the longitudinal tract;
- and
- the translation is limited by interference between the boss and the proximal end section.
A medicament delivery device for delivering a target amount of medicament from a distal end of the device, the device defining a longitudinal axis and comprising:
- a collar disposed coaxial with the longitudinal axis and that has:
- a boss;
- and
- a projection;
- and
- a plunger rod that is threadingly engaged, coaxially within the collar, with a proximal knob that has:
- a distal body having:
- an annular tract;
- and
- a longitudinal tract;
- and
- a proximal end section supporting, upon a distal portion of the proximal end section, a proximal terminal surface of the longitudinal tract:
- wherein, in operation:
- during a rotation of the knob about the longitudinal axis:
- the boss slidingly engages the annular tract to retain the knob longitudinally;
- and
- the projection slidingly engages the rod to retain the rod rotationally while the rod moves toward the distal end;
- after the rotation, during a longitudinal translation of the knob into the collar, the boss slidingly engages the longitudinal tract;
- and
- the knob carries the rod distally forward until the boss abuts the proximal end section.
A medicament delivery device defining a longitudinal axis and having a distal end, the device for distally delivering a predetermined amount of medicament, the device comprising:
- a collar disposed coaxial with the longitudinal axis and that has:
- a boss;
- and
- a projection;
- and
- a plunger rod that is threadingly engaged, coaxially within the collar, with a proximal knob that has:
- a distal body having;
- an annular tract;
- and
- a longitudinal tract;
- and
- a proximal end section supporting, upon a distal portion of the proximal end section, a proximal terminal surface of the longitudinal tract;
- wherein, in operation:
- during a rotation of the knob about the longitudinal axis:
- the boss slidingly engages the annular tract to retain the knob longitudinally;
- the projection slidingly engages a longitudinally extending structure of the rod to retain the rod rotationally;
- and
- the rotation of the knob drives the rod toward the distal end;
- and,
- after the rotation, during a longitudinal translation of the knob into the collar:
- the boss slidingly engages the longitudinal tract;
- and
- the translation advances the medicament out of the distal end until the proximal end section abuts the boss.
Dependencies are inferred from the claim text.