US 12,433,649 B2
Systems and methods for a smart, implantable cranio-maxillo-facial distractor
Jesse Taylor, Gladwyne, PA (US); and Ari Wes, Philadelphia, PA (US)
Assigned to THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, Philadelphia, PA (US); and CHILDREN'S HOSPITAL OF PHILADELPHIA, Philadelphia, PA (US)
Appl. No. 17/430,518
Filed by THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, Philadelphia, PA (US); and CHILDREN'S HOSPITAL OF PHILADELPHIA, Philadelphia, PA (US)
PCT Filed Feb. 12, 2020, PCT No. PCT/US2020/017918
§ 371(c)(1), (2) Date Aug. 12, 2021,
PCT Pub. No. WO2020/167940, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/804,955, filed on Feb. 13, 2019.
Prior Publication US 2022/0125493 A1, Apr. 28, 2022
Int. Cl. A61B 17/80 (2006.01); A61B 17/00 (2006.01); A61B 17/56 (2006.01); A61B 17/66 (2006.01)
CPC A61B 17/8019 (2013.01) [A61B 17/663 (2013.01); A61B 2017/00221 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/00411 (2013.01); A61B 2017/00876 (2013.01); A61B 2017/564 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A system for distraction of a bone in a patient, comprising:
a distraction device, adapted for subcutaneous implantation in the patient, comprising:
a distraction element, adapted to attach to opposing bony fragments of the bone and perform distraction osteogenesis on the bone;
a rotatable magnetic element, coupled to the distraction element such that rotation of the rotatable magnetic element controls movement of the distraction element
an electronic element, magnetically coupled to the rotatable magnetic element, wherein the electronic element is adapted to count the one or more rotations of the rotatable magnetic element by detecting one or more interruptions in a magnetic field generated by the rotatable magnetic element, wherein each interruption corresponds to a rotation of the rotatable magnetic element, and wherein a ferrite strip on the rotatable magnetic element is adapted to interrupt the magnetic field; and
a handheld device, operationally coupled to the distraction device, comprising:
a magnetic element, operationally coupled to and magnetically aligned with the rotatable magnetic element of the distraction device, such that rotation of the magnetic element of the handheld device causes corresponding rotation of the rotatable magnetic element of the distraction device, wherein the rotatable magnetic element is configured to rotate based on one or more distraction parameters.