US 12,357,751 B2
Linear insertion device with rotational drive
Justin Coker, Laguna Niguel, CA (US); Mark A. DeStefano, Collegeville, PA (US); Kenneth C. Hsu, Tustin, CA (US); Amber Stansberry, Irvine, CA (US); Paul Strasma, Irvine, CA (US); David Gillett, San Diego, CA (US); Mark Estes, Malibu, CA (US); and Amrith Karunaratne, Irvine, CA (US)
Assigned to Tandem Diabetes Care, Inc., San Diego, CA (US)
Appl. No. 17/289,009
Filed by CAPILLARY BIOMEDICAL, INC., Irvine, CA (US)
PCT Filed Nov. 8, 2019, PCT No. PCT/US2019/060602
§ 371(c)(1), (2) Date Apr. 27, 2021,
PCT Pub. No. WO2020/097552, PCT Pub. Date May 14, 2020.
Claims priority of provisional application 62/757,684, filed on Nov. 8, 2018.
Prior Publication US 2021/0402084 A1, Dec. 30, 2021
Int. Cl. A61M 5/142 (2006.01); A61M 5/158 (2006.01); A61M 25/01 (2006.01); A61M 25/06 (2006.01); A61M 25/02 (2006.01)
CPC A61M 5/158 (2013.01) [A61M 5/14248 (2013.01); A61M 25/0113 (2013.01); A61M 25/0606 (2013.01); A61M 2005/14252 (2013.01); A61M 2005/1585 (2013.01); A61M 2025/0246 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A system for delivering fluid to a user transcutaneously, the system comprising:
a drive wheel;
a torsion spring disposed within the drive wheel;
a linear slide engaged within the drive wheel and having a stylet attached thereto;
a cannula; and
an infusion set base configured to removably couple to an inserter housing and to attach to a user's skin;
wherein the torsion spring is energized such that, when actuated, the torsion spring delivers a spring force on the drive wheel to rotate the drive wheel, and wherein rotation of the drive wheel causes the linear slide engaged with the drive wheel to move axially to drive the stylet and cannula into a user's skin, and
wherein the infusion set base is configured to engage with the cannula as the cannula is driven into the user's skin so as to hold the cannula in the user's skin as the stylet is retracted and the system includes an automatic release mechanism configured to automatically decouple the inserter housing from the infusion set base following insertion of the cannula.