Needle-based device with external safety cap and a needle guide element thereof

Inventors

Moleda, Jaroslaw • Zurawicz, Maciej • Grzelak, Robert

Assignees

Medivena Sp zoo

Abstract

A needle-based device includes a needle shield encompassing an entirety of a length of a needle protruding from a body associated with the needle-based device to protect the needle in a first state of disuse of the needle-based device. The needle shield also includes a lock button with a first end either integrally formed with the needle shield or external to the needle shield and then coupled to the needle shield. The lock button includes a hook at a second end thereof. A length of the lock button is completely external to the needle shield, and the needle shield is locked using the lock button in the first state of disuse of the needle-based device in accordance with the hook of the lock button passing through a groove formed on the needle shield.

Core Innovation

A needle-based device includes a needle shield encompassing an entirety of a length of a needle protruding from a body associated with the needle-based device to protect the needle in a first state of disuse. The needle shield is retracted in a first direction toward the body to apply a first force, causing the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use.

The device includes a lock button having a first end either integrally formed with the needle shield or external to the needle shield and coupled to the needle shield, and a hook at a second end of the lock button. During locking, a length of the lock button that is completely external to the needle shield passes through a groove formed on the needle shield, and the needle shield is locked in the first state of disuse by a lock button arrangement.

Safety-related structural features include an external cap that fully encompasses the needle shield in the first state of disuse and an inwardly protruding internal guide element through the needle shield. Variant arrangements include spring-based configurations where the needle shield encompasses an entirety of the spring length in the first state of disuse, and coupling structures such as wings for securing the needle shield to the body.

Claims Coverage

The document provides three independent claims covering a needle-based device with a retractable needle shield that encompasses the entirety of a protruding needle length in a first state of disuse, and a lock button that locks the needle shield using a hook passing through a groove with defined geometric relationships. The claims also cover body-structure variants and additional safety-related containment features.

Across the independent claims, the core claim scope is directed to a needle shield that initially encompasses the entirety of a protruding needle length in a first state of disuse and is retracted by a first force to cause needle emergence for a second state of use. Locking is achieved using a lock button whose hook passes through a groove on the needle shield, with the external length of the lock button being parallel to the needle shield length and protruding needle length while the hook is perpendicular to those lengths; one claim family additionally specifies direct locking of the hook onto a top of the body. A further independent claim scope specifies body composition including a needle mount coupled to a barrel, or the barrel itself.

Stated Advantages

Documented Applications