US 12,329,524 B2
Latch mechanism for preventing lancet oscillation in a lancing device
Lauren R. Pusey, Woodstock, GA (US); and Greg Lamps, Smyrna, GA (US)
Assigned to FACET TECHNOLOGIES, LLC, Kennesaw, GA (US)
Filed by FACET TECHNOLOGIES, LLC, Atlanta, GA (US)
Filed on Jan. 26, 2024, as Appl. No. 18/424,344.
Application 18/424,344 is a continuation of application No. 18/091,986, filed on Dec. 30, 2022, granted, now 11,883,171.
Application 18/091,986 is a continuation of application No. 17/741,517, filed on May 11, 2022, granted, now 11,564,603, issued on Jan. 31, 2023.
Application 17/741,517 is a continuation of application No. 17/034,888, filed on Sep. 28, 2020, abandoned.
Application 17/034,888 is a continuation of application No. 15/824,443, filed on Nov. 28, 2017, granted, now 10,820,849, issued on Nov. 3, 2020.
Application 15/824,443 is a continuation of application No. 13/655,168, filed on Oct. 18, 2012, granted, now 9,844,331, issued on Dec. 19, 2017.
Claims priority of provisional application 61/570,894, filed on Dec. 15, 2011.
Prior Publication US 2024/0206786 A1, Jun. 27, 2024
Int. Cl. A61B 5/151 (2006.01); A61B 5/15 (2006.01)
CPC A61B 5/15194 (2013.01) [A61B 5/150022 (2013.01); A61B 5/150106 (2013.01); A61B 5/150183 (2013.01); A61B 5/150412 (2013.01); A61B 5/150519 (2013.01); A61B 5/15113 (2013.01); A61B 5/15117 (2013.01); A61B 5/1513 (2013.01); A61B 5/1519 (2013.01); A61B 5/150946 (2013.01); A61B 5/15144 (2013.01); A61B 5/15146 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A lancing device for use with a disposable lancet having a lancet body and a sharp lancet tip for penetrating skin, comprising:
a housing defining a cavity;
a lancet carrier positioned within the cavity, the lancet carrier being configured to releasably engage the disposable lancet, the lancet carrier being movable in a direction along a lancing stroke from a retracted position to an extended position where at least the sharp lancet tip of the disposable lancet is configured to project out from the housing;
a drive spring positioned within the cavity and configured to propel the lancet carrier along an advancing portion of the lancing stroke from the retracted position to the extended position;
a return spring positioned within the cavity and configured to propel the lancet carrier along a return portion of the lancing stroke from the extended position to a neutral position;
a latch mechanism operable to permit the lancet carrier to travel through the advancing portion and the return portion of the lancing stroke, and to thereafter prevent excess oscillation of the lancet carrier from the neutral position;
a removable cap positionable over a distal end of the housing, wherein removal of the cap from the housing allows access to the cavity in order to remove and replace the disposable lancet; and
an ejection member having an ejection finger and an extension, the ejection member being movable distally to eject the disposable lancet from the lancet carrier, wherein at least portions of both the ejection finger and the extension extend along the direction of the lancing stroke, the extension extending distally beyond the ejection finger, wherein the ejection finger is configured to contact a proximal end of the disposable lancet.