US 11,986,229 B2
Osteotome with inflatable portion and multiwire articulation
Jason Wiersdorf, West Jordan, UT (US); and Aaron Hopkinson, Herriman, UT (US)
Assigned to Merit Medical Systems, Inc., South Jordan, UT (US)
Filed by Merit Medical Systems, Inc., South Jordan, UT (US)
Filed on Sep. 17, 2020, as Appl. No. 17/024,448.
Claims priority of provisional application 62/902,144, filed on Sep. 18, 2019.
Prior Publication US 2021/0077170 A1, Mar. 18, 2021
Int. Cl. A61B 17/88 (2006.01); A61B 17/16 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/8855 (2013.01) [A61B 17/1671 (2013.01); A61B 2017/00557 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A bone displacement device, comprising:
an elongate outer tube;
an elongate stylet coaxially disposed within the outer tube, wherein the stylet comprises a tubular shaft and a plurality of pull wires disposed within a lumen of the shaft, the plurality of pull wires are configured to be pulled proximally;
a handle coupled to a proximal portion of the outer tube and the stylet, wherein the handle comprises a rotatable grip, wherein the plurality of pull wires are coupled to a pull member disposed within the rotatable grip, and wherein the rotatable grip engages with threads of the pull member to displace the pull member proximally and distally;
an expandable member disposed adjacent a distal end of the outer tube; and
a tip tie tube disposed within the expandable member and coupled to a distal end of the expandable member and slidably disposed over a distal portion of the stylet, wherein the tip tie tube is displaced proximally relative to the distal portion of the stylet when the expandable member is expanded, and is displaced distally relative to the distal portion of the stylet when the expandable member is contracted.