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Publication Number
US-12594008-B2
Publication Date
2026-04-07
Expiration Date
Abstract
A lancing device has improved charging features. In one example embodiment, the charging mechanism generally includes a user actuated portion or charging member and a cam feature for engagement therewith. The charging member includes a finger projection or boss and the cam feature includes a ramped surface. Actuating the charging member causes the finger projection to movably engage the ramp surface of the cam feature and charge the drive mechanism.
Core Innovation
The invention relates to a lancing device comprising a housing and a lancet carrier axially movable within the housing between first and second positions, where the lancet carrier has an elongate body and a protrusion protruding outwardly from the elongate body to form a cam-follower surface. A spring-biased charging actuator is pivotally mounted to the housing and includes a rocker lever with a cam-actuator projection configured to engage with the cam-follower surface. The rocker lever is pivoted about a first axis transverse to an axis of movement of the lancet carrier along a lancing stroke, such that the rocker lever is biased outward from the housing when the lancet carrier is in the first position and pivots into the housing to engage with the cam-follower surface and move the lancet carrier into the second position.
A release button extends outwardly from an exterior surface of the housing and includes a button portion and an annular body at least partially surrounding a portion of the lancet carrier, the annular body having an opening. The protrusion is disposed on an opposite side of the annular body from the button portion of the release button. The protrusion is configured to engage with the opening to retain the lancet carrier in a charged state when the lancet carrier is retracted into the second position, and to release the lancet carrier to propel a lancet to lance a patient's skin when the release button is actuated.
The lancing device includes a spring-biased pivoting charging mechanism for moving the lancet carrier between a neutral position and a charged position, where the pivoting charging mechanism comprises a rocker lever and a torsion spring. The charging mechanism cooperates with a lock-and-release mechanism comprising the release button with a button portion, an annular body, and an opening, so that the protrusion engages the opening to retain the charged state and releases the lancet carrier to propel a lancet during lancing.
Claims Coverage
The document contains two independent claims. The claims cover a spring-biased pivoting charging mechanism that engages a cam-follower surface to move a lancet carrier into a charged position, combined with a lock-and-release mechanism in which a protrusion on the lancet carrier engages an opening of an annular body to retain the charged state and disengages to propel a lancet when a release button is actuated.
Pivoting rocker-lever charging mechanism using a cam-follower surface
A spring-biased charging actuator pivotally mounted to the housing for moving the lancet carrier into the second position, wherein the charging actuator comprises a rocker lever having a cam-actuator projection configured to engage with the cam-follower surface and a torsion spring, and wherein the charging actuator is pivotal about a first axis transverse to an axis of movement of the lancet carrier along a lancing stroke such that the rocker lever is biased outward from the housing when the lancet carrier is in the first position and pivots into the housing to engage with the cam-follower surface to move the lancet carrier into the second position.
Release button with annular body opening retaining and releasing via opposite-side protrusion
A release button extending outwardly from an exterior surface of the housing, the release button comprising a button portion and an annular body at least partially surrounding a portion of the lancet carrier, the annular body having an opening; wherein the protrusion is disposed on an opposite side of the annular body from the button portion of the release button, wherein the protrusion of the lancet carrier is configured to engage with the opening of the annular body to retain the lancet carrier in a charged state when the lancet carrier is retracted into the second position, and configured to release the lancet carrier to propel a lancet to lance a patient's skin when the release button is actuated.
Neutral-to-charged pivoting rocker lever about a transverse axis
A spring-biased pivoting charging mechanism for moving the lancet carrier between a neutral position and a charged position, the pivoting charging mechanism comprising a rocker lever and a torsion spring, and wherein the pivoting charging mechanism is pivotal about a first axis transverse to an axis of movement of the lancet carrier along a lancing stroke such that the rocker lever is biased outward from the housing in the neutral position and pivots into the housing to engage with a cam-follower surface of the lancet carrier in the charged position.
Lock-and-release mechanism with release button annular body opening and protrusion engagement
A lock-and-release mechanism, the lock-and-release mechanism comprising a release button comprising a button portion, an annular body, and an opening along the annular body; wherein a portion of the release button extends outwardly from an exterior surface of the housing and wherein the rocker lever is positioned laterally to the release button, wherein the protrusion is disposed on an opposite side of the annular body from the button portion of the release button, and wherein the protrusion of the lancet carrier is configured to engage with the opening of the annular body to retain the lancet carrier in a charged state when the lancet carrier is retracted into the charged position, and configured to release the lancet carrier to propel a lancet to lance a patient's skin when the release button is actuated.
Across both independent claims, the claim coverage centers on a laterally positioned, spring-biased pivoting rocker-lever charging mechanism that engages a cam-follower surface to move an axially movable lancet carrier into a charged position, and a release-button lock-and-release mechanism in which a lancet-carrier protrusion engages an annular-body opening to retain the charged state and then releases to propel a lancet to lance a patient's skin when the release button is actuated.
Stated Advantages
Documented Applications
Propelling a lancet to lance a patient's skin when the release button is actuated.
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