Lancet needle with alignment and retention notch
Inventors
Assignees
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Publication Number
US-12433519-B2
Publication Date
2025-10-07
Expiration Date
Abstract
A lancet needle with an alignment and engagement notch, with material of the lancet body extending into the notch to more securely retain the needle to the lancet body, whereby a shorter needle can be utilized than with typical lancets. The notch optionally also provides a registration point for rotational and/or axial alignment of the needle during overmolding to form the lancet body, for example to maintain consistent positioning of the needle's beveled point.
Core Innovation
The lancet includes a lancing needle having a length LN that is no more than 75% of the lancet body length LB, and an embedded portion within the lancet body having an embedded length LM that is no more than 50% of the lancet body length LB. The embedded portion includes a notch, and the sharp tip is exposed from a head portion of the lancet body and forms a beveled surface.
The notch is positioned midway of the embedded length LM of the lancing needle and is formed on the embedded portion. The notch is an identifier such that a registration is maintained between the notch, the beveled surface, and the lancet body.
The structure maintains alignment between the notch and the beveled surface relative to the lancet body, including during molding where the lancet body is molded over the embedded portion of the needle body. The notch and beveled surface provide consistent rotational and axial registration so that bevel orientation is maintained relative to the lancet body, including for multi-lancet strips.
Claims Coverage
The provided material includes one independent claim that defines three inventive features concerning the notch, the needle geometry, and the beveled sharp tip. No other independent claims are explicitly provided in the provided material.
Notch on embedded portion as identifier for maintaining registration
A notch formed on the embedded portion and positioned midway of the embedded length LM of the lancing needle, where the notch is an identifier such that a registration is maintained between the notch, the beveled surface, and the lancet body.
Short lancing needle with embedded portion limited relative to lancet body length
A lancing needle having a length LN no more than 75% the lancet body length LB, with an embedded portion embedded within the lancet body having an embedded length LM no more than 50% the lancet body length LB.
Beveled sharp tip formed on end of elongate needle body opposite embedded portion
A sharp tip exposed from the head portion opposite the body portion, where the sharp tip is formed on an end of the elongate needle body opposite the embedded portion and forms a beveled surface.
The independent claim combines a notch on the embedded portion, positioned midway of LM, to maintain registration with the beveled surface and lancet body, together with needle length and embedded length limits relative to the lancet body length.
Stated Advantages
The notch and beveled surface provide consistent rotational and axial registration so that bevel orientation is maintained relative to the lancet body, including during molding and for multi-lancet strips.
Documented Applications
Multi-lancet strips.
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