US 12,426,869 B2
Constant distraction force driven self actuating growing rod systems
Aditya Ingalhalikar, Maharashtra (IN); Sagar Sathaye, Maharashtra (IN); Piyali Gokhale, Maharashtra (IN); and Dhrumil Shekhda, Gujrat (IN)
Assigned to INDIUS MEDICAL TECHNOLOGIES PRIVATE LIMITED, Pune (IN)
Filed by Indius Medical Technologies Private Limited, Maharashtra (IN)
Filed on Feb. 14, 2024, as Appl. No. 18/441,566.
Application 18/441,566 is a continuation in part of application No. 18/230,473, filed on Aug. 4, 2023.
Claims priority of application No. 202221045675 (IN), filed on Aug. 10, 2022.
Prior Publication US 2024/0180542 A1, Jun. 6, 2024
Int. Cl. A61B 17/02 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/025 (2013.01) [A61B 2017/00991 (2013.01); A61B 2017/0256 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A constant distraction force driven self-actuating growing rod system (1000) for implantation on a corrected bony anatomy, the system (1000) comprising:
a. at least one static rod component (10);
b. at least one hollow intermediate rod component (20);
c. at least one growth rod component (30) being partially disposed within the at least one intermediate rod component (20);
d. at least one casing (40) being sandwiched between the at least one static rod component (10) and the at least one hollow intermediate rod component (20) and characterised by housing at least one mechanical biasing mechanism (50);
e. at least one guide rod (60) being partially disposed within the at least one casing (40) whereby at least a part of the at least one mechanical biasing mechanism (50) is mounted thereon;
f. at least one spring actuator component (70) being disposed over the at least one guide rod (60) and adapted to ride thereover by linear translation;
g. at least one compression spring component (80) housed inside the at least one intermediate rod component (20) abutting the at least one spring actuator component (70) and adapted to apply an active distraction force onto the system (1000); and
h. at least one magnetic field-based spring actuation mechanism (90);
whereby during the natural growth of the corrected bony anatomy, a part of the at least one growth rod component (30) telescopes out of the at least one intermediate rod component (20), creating a distraction force deficit in the system (1000), said distraction force deficit being corrected by causing the at least one compression spring component (80) to get compressed; thereby maintaining an active distraction force onto the system (1000).