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US 12,758,718 B2Granted
System and method for needle hiding in injectors
AssigneePfizer Inc.
InventorsIlan Kachler, Idan Naaman, Amotz Porat, Tom Shefer
Life of this patent
Estimating the term…
Abstract
An injector, comprising a housing arranged along a longitudinal axis and configured to receive a medicament cartridge; an injection drive mechanism for driving a piston, the piston forming part of the medicament cartridge, the injection drive mechanism injecting a medicament when the piston is forwardly displaced; and a needle hiding element, which is slidably attached to the housing and positionable in at least one of an extended orientation and a retracted orientation, wherein in the extended orientation the needle hiding element protrudes forwardly from the housing and in the retracted orientation, the needle hiding element is locked relative to the housing.
Claims17
An injector comprising:
- a housing arranged along a longitudinal axis and configured to receive a medicament cartridge;
- an injection drive mechanism for driving a piston, said piston forming a part of said medicament cartridge, said injection drive mechanism injecting a medicament when said piston is forwardly displaced;
- and
- a needle hiding element that hides and prevents access to a needle tip, which is slidably attached to said housing and positionable in at least one of an extended orientation and a retracted orientation, wherein in said extended orientation said needle hiding element protrudes forwardly from said housing and in said retracted orientation, said needle hiding element is locked relative to said housing;
- wherein the needle hiding element includes at least a flexible arm, extending axially and comprising a snap-fit locking feature that can be engaged in a corresponding feature provided on the housing and a radially protruding button that can be handled by a user for deflecting the arm and axially moving the needle hiding element, whereby the user can position the needle hiding element in one of said extended and retracted orientations, wherein the radially protruding button can be engaged by a longitudinal cut-out formed on a sidewall of the housing adjacent to the corresponding feature.
2 more elements
An injector comprising:
- a housing arranged along a longitudinal axis and configured to receive a medicament cartridge;
- an injection drive mechanism for driving a piston, said injection drive mechanism injecting a medicament when said piston is forwardly displaced;
- and
- a needle hiding element that hides and prevents access to a needle tip, which is slidably attached to said housing and positionable in at least one of an extended orientation and a retracted orientation, wherein in said extended orientation said needle hiding element protrudes forwardly from said housing and in said retracted orientation, said needle hiding element is locked relative to said housing;
- wherein the needle hiding element includes at least a flexible arm, extending axially and comprising a snap-fit locking feature that can be engaged in a corresponding feature provided on the housing and a radially protruding button that can be handled by a user for deflecting the arm and axially moving the needle hiding element, whereby the user can position the needle hiding element in one of said extended and retracted orientations, wherein the radially protruding button can be engaged by a longitudinal cut-out formed on a sidewall of the housing adjacent to the corresponding feature.
2 more elements
A method of using a medicament injector, the method comprising:
- inserting a medicament cartridge into a housing of an injector, the housing being arranged along a longitudinal axis;
- retracting a needle hiding element of said injector that hides and prevents access to a needle tip and locking said needle hiding element relative to said housing in a retracted orientation;
- attaching a needle to said medicament cartridge;
- releasing said needle hiding element such that said needle hiding element is returned to an extended orientation protruding forwardly from said using;
- pressing said injector against an injection site;
- and
- driving, by an injection drive mechanism of said injector, a piston that forms a part of said medicament cartridge, said injection drive mechanism injecting a medicament via said needle when said piston is forwardly displaced;
- wherein the needle hiding element includes at least a flexible arm, extending axially and comprising a snap-fit locking feature that can be engaged in a corresponding feature provided on the housing and a radially protruding button for deflecting the arm and axially moving the needle hiding element, wherein the radially protruding button can be engaged by a longitudinal cut-out formed on a sidewall of the housing adjacent to the corresponding feature.
5 more elements
Dependencies are inferred from the claim text.