US 12,458,779 B2
Catheter insertion mechanism for a patch pump
Russell Cole, River Vale, NJ (US)
Assigned to Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed by Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed on Jul. 30, 2021, as Appl. No. 17/389,743.
Application 17/389,743 is a continuation of application No. 15/301,062, granted, now 11,103,680, previously published as PCT/US2015/027361, filed on Apr. 23, 2015.
Claims priority of provisional application 61/983,969, filed on Apr. 24, 2014.
Prior Publication US 2021/0353911 A1, Nov. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 25/06 (2006.01); A61M 5/142 (2006.01); A61M 5/158 (2006.01); A61M 39/02 (2006.01)
CPC A61M 25/0606 (2013.01) [A61M 5/14248 (2013.01); A61M 2005/14252 (2013.01); A61M 2005/1585 (2013.01); A61M 25/0631 (2013.01); A61M 39/0247 (2013.01); A61M 2205/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A catheter insertion device, comprising:
a device housing and a button slidably captured therein;
a catheter slidably captured by the button; and
an introducer needle subassembly comprising the catheter and an insertion needle, the catheter movably installed on the insertion needle, the introducer needle subassembly releasably secured to the button,
wherein button movement drives the introducer needle subassembly from a first linear position to a second linear position to insert the catheter and release the introducer needle subassembly from the button;
wherein the device housing comprises:
a mechanism housing, comprising a channel for slidably receiving the button, the channel having proximal walls configured to secure the introducer needle subassembly to the button, and a distal expanded portion configured to permit interference pieces to move radially outwardly to release the introducer needle subassembly from the button;
wherein movement of the button from the first linear position to the second linear position energizes a spring, and releases the spring at the second linear position to drive the insertion needle to a third linear position past the first linear position while leaving the catheter inserted;
wherein the introducer needle subassembly comprises:
a button septum slidably captured by the button;
wherein the introducer needle is hollow and comprises at least one side-port, wherein an end of the introducer needle remains in fluid communication with the catheter; and
wherein the button septum comprises a side-port, wherein the introducer needle is disposed within the button septum and the at least one side-port of the introducer needle and the side-port of the septum align in the second linear position.