US 12,239,351 B2
Mixing and delivery device for bone cement and associated methods
Sebastien Chaligne, Brette les Pins (FR); Julie Mottet, Chabeuil (FR); Alexis Dupuy, Sancourt (FR); and Lenaic Giffard, Valence (FR)
Assigned to Biomet SAS, Valence (FR)
Filed by Biomet SAS, Valence (FR)
Filed on Jan. 3, 2022, as Appl. No. 17/567,561.
Application 17/567,561 is a continuation of application No. 16/345,588, granted, now 11,234,749, previously published as PCT/EP2017/079973, filed on Nov. 21, 2017.
Claims priority of provisional application 62/425,133, filed on Nov. 22, 2016.
Prior Publication US 2022/0117643 A1, Apr. 21, 2022
Int. Cl. A61B 17/88 (2006.01)
CPC A61B 17/8833 (2013.01) [A61B 17/8802 (2013.01); A61B 17/8822 (2013.01); A61B 2017/8838 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A device, comprising:
a mixing rod;
an injection rod;
a cylindrical container including a proximal end, a distal end, a chamber extending along a longitudinal axis from the proximal end to the distal end thereof, and an injection passage disposed at the distal end of the cylindrical container, the injection passage having an inner diameter that is less than a diameter of the chamber;
a lid engageable with the proximal end of the cylindrical container;
a mixing screw rotatably disposable in the chamber, the mixing screw including a proximal end, a distal end, a screw thread extending along an outer surface of the mixing screw from proximate the proximal end to proximate the distal end of the mixing screw, and a return passage extending through the mixing screw from the proximal end to the distal end thereof;
and
a plug removably disposable in the injection passage,
the device being switchable from an injection mode to a mixing mode only by insertion of the plug into the injection passage,
wherein, in the mixing mode, the mixing rod is configured to selectively engage with the proximal end of the mixing screw to rotate the mixing screw about the longitudinal axis causing material disposed in the chamber to be moved distally through the chamber by the screw thread and return to the proximal end of the chamber through the return passage of the mixing screw,
the device being switchable from the mixing mode to the injection mode only by removal of the plug from the injection passage,
wherein, in the injection mode of the device, the injection rod is configured to selectively engage with the proximal end of the mixing screw such that the injection rod occludes the return passage of the mixing screw and rotates the mixing screw about the longitudinal axis causing material disposed in the chamber to be moved distally through the chamber and through the injection passage.