US 12,434,041 B2
Instrument advancement device having an anti-buckling feature
Megan Scherich, Salt Lake City, UT (US); Weston F. Harding, Lehi, UT (US); Justin G. Hortin, Farmington, UT (US); Jonathan Karl Burkholz, Salt Lake City, UT (US); and Bart D. Peterson, Farmington, UT (US)
Assigned to Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed by Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed on Mar. 31, 2022, as Appl. No. 17/709,980.
Claims priority of provisional application 63/170,389, filed on Apr. 2, 2021.
Prior Publication US 2022/0323737 A1, Oct. 13, 2022
Int. Cl. A61M 39/02 (2006.01); A61M 25/00 (2006.01); A61M 39/10 (2006.01)
CPC A61M 39/0247 (2013.01) [A61M 25/0097 (2013.01); A61M 2039/0258 (2013.01); A61M 2039/0279 (2013.01); A61M 2039/0294 (2013.01); A61M 2039/1077 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An instrument advancement device, comprising:
a housing;
an extension tube extending through the housing;
a wedge disposed within the housing, wherein the wedge comprises an arc-shaped channel;
a pair of opposing pinch members configured to pinch the extension tube, wherein the pair of opposing pinch members are disposed within the housing and configured to move along the extension tube with the housing;
an instrument extending through the arc-shaped channel, wherein a first end of the instrument is fixed, wherein in response to moving the housing distally along the extension tube, the pair of opposing pinch members push the wedge distally, wherein in response to movement of the wedge distally a first distance, a second end of the instrument is configured to advance distally a second distance, wherein the second distance is at least twice the first distance; and
a support element disposed within a lumen of the extension tube and configured to reduce buckling of the instrument, wherein the instrument extends through the support element.