System and method for needle hiding in injectors
Inventors
KACHLER, ILAN • NAAMAN, Idan • Porat, Amotz • SHEFER, Tom
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-12758718-B2
Publication Date
2026-10-13
Expiration Date
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.
Core Innovation
The invention features an injector comprising a housing configured to receive a medicament cartridge, an injection drive mechanism for driving a piston, and a slidably attached needle hiding element. The needle hiding element hides and prevents access to a needle tip, protruding forwardly in an extended orientation and locking relative to the housing in a retracted orientation. The problem being solved is not explicitly described in patent.
The needle hiding element includes an axially extending flexible arm with a snap-fit locking feature and a radially protruding button for deflecting the arm and axially moving the element. Biasing springs and an intermediate position permit medicament delivery via a needle as the cartridge piston is displaced, returning the element to an extended needle-covering position. This arrangement facilitates needle handling while shielding the needle when not actively exposed.
Claims Coverage
The claims identify three independent claims covering two injector devices and one method of use, presenting three main inventive features.
Injector with a slidable needle hiding element
Claim 1 covers a housing configured to receive a medicament cartridge, an injection drive mechanism for driving a piston forming part of the cartridge, and a slidable needle hiding element that hides and prevents access to a needle tip, positionable between an extended orientation and a retracted orientation locked relative to the housing via a flexible arm with a snap-fit locking feature and a radially protruding button.
Housing cut-out engaging a flexible arm and button
Claim 7 covers a housing configured to receive a medicament cartridge, an injection drive mechanism, and a slidable needle hiding element hiding and preventing access to a needle tip, wherein the element comprises an axially extending flexible arm with a snap-fit locking feature and a radially protruding button that engages a longitudinal cut-out in a housing sidewall.
Method of using a medicament injector
Claim 13 covers a method of using a medicament injector to deliver medicament via a needle using an injection drive mechanism that drives a cartridge piston, wherein a needle hiding element hides and prevents access to the needle tip and includes an axially extending flexible arm, a snap-fit locking feature, and a radially protruding button engaging a longitudinal housing cut-out.
The independent claims cover an injector comprising a lockable, slidable needle hiding element with a button-actuated flexible arm and snap-fit locking arrangement, as well as a method of using the injector to deliver medicament.
Stated Advantages
The arrangement facilitates needle handling while hiding the needle when not actively exposed.
The needle hiding element hides and prevents access to the needle tip.
Documented Applications
The injector is used to deliver and inject medicament via a needle at an injection site using an injection drive mechanism that drives a piston forming part of a medicament cartridge.
Interested in licensing this patent?