US 12,257,157 B2
Talus formation and implantation method
Gregory J. Kowalczyk, Little Silver, MD (US); Selene G. Parekh, Cary, NC (US); and Luciano Bernardino Bertolotti, Buenos Aires (AR)
Assigned to Paragon Advanced Technologies, Inc., Englewood, CO (US)
Filed by PARAGON ADVANCED TECHNOLOGIES, INC., Englewood, CO (US)
Filed on Sep. 29, 2020, as Appl. No. 17/036,485.
Claims priority of provisional application 62/908,438, filed on Sep. 30, 2019.
Prior Publication US 2021/0093458 A1, Apr. 1, 2021
Int. Cl. B33Y 10/00 (2015.01); A61F 2/30 (2006.01); A61F 2/42 (2006.01); B29C 64/386 (2017.01); B29C 64/393 (2017.01); B33Y 50/00 (2015.01); B33Y 80/00 (2015.01); G16H 30/40 (2018.01); G16H 50/30 (2018.01); G16H 50/50 (2018.01); B29L 31/00 (2006.01)
CPC A61F 2/4202 (2013.01) [A61F 2/30942 (2013.01); B29C 64/386 (2017.08); B33Y 10/00 (2014.12); B33Y 50/00 (2014.12); B33Y 80/00 (2014.12); G16H 30/40 (2018.01); G16H 50/30 (2018.01); G16H 50/50 (2018.01); A61F 2002/30116 (2013.01); A61F 2002/30322 (2013.01); A61F 2002/30578 (2013.01); A61F 2002/30878 (2013.01); A61F 2002/30909 (2013.01); A61F 2002/30952 (2013.01); A61F 2002/30985 (2013.01); A61F 2002/4207 (2013.01); B29L 2031/7532 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A system for scanning a talus joint comprising:
at least one computer comprising at least one microprocessor;
at least one database comprising a plurality of pre-set dimensions for a plurality of different bone implants; and
at least one scanner in communication with said at least one computer, wherein said at least one scanner is configured to scan a first joint of a patient and a second joint of a patient, the first joint being a contralateral joint of the second joint;
wherein said at least one microprocessor of said computer is configured to:
provide a mirror image of a first bone of the first scanned joint, and create a first approximated set of dimensions for said first bone from said mirror image;
create a second approximated set of dimensions of a second bone of the second scanned joint and compare said second approximated set of dimensions to said plurality of pre-set dimensions and determine a first bone implant of said plurality of different bone implants based on said second approximated set of dimensions to obtain a third approximated set of dimensions for said first bone implant; and
modify either of the first approximated set of dimensions or the third approximated set of dimensions based on any arthritis identified in the scanned second joint or in adjacent joints that articulate with one or more portions of the scanned second joint to obtain a calculated set of talus dimensions for printing;
the calculated set of talus dimensions comprising:
if arthritis is identified in a subtalar joint of the adjacent joints, but not in a navicular joint or in a tibiotalar joint of the adjacent joints, the first approximated set of dimensions or the third approximated set of dimensions having a lattice structure to promote fusion with a calcaneus bone of the subtalar joint;
if arthritis is identified in the navicular joint of the adjacent joints, but not in the subtalar joint or the tibiotalar joint of the adjacent joints, the first approximated set of dimensions or the third approximated set of dimensions having a lattice structure to promote fusion with a navicular bone of the navicular joint; or
if arthritis is identified in at least the subtalar joint, the navicular joint and the tibiotalar joint of the adjacent joints, the first approximated set of dimensions or the third approximated set of dimensions configured to engage with a total ankle replacement system and lacking any lattice structure.