US 11,718,018 B2
3D printed medical devices including internal shaping
Jonathan E. Baxter, Fridley, MN (US); Kristin M. Johnson, Circle Pines, MN (US); Gregory N. Nesseth, Forest Lake, MN (US); and Jay T. Rassat, Otsego, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Jul. 30, 2021, as Appl. No. 17/390,260.
Claims priority of provisional application 63/059,870, filed on Jul. 31, 2020.
Prior Publication US 2022/0032537 A1, Feb. 3, 2022
Int. Cl. B29C 64/118 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01); B33Y 80/00 (2015.01); B29C 64/321 (2017.01); B29C 64/209 (2017.01); B29C 64/227 (2017.01); B29C 64/393 (2017.01); B33Y 50/02 (2015.01); A61M 25/00 (2006.01); B29L 31/00 (2006.01)
CPC B29C 64/118 (2017.08) [A61M 25/0009 (2013.01); A61M 25/0045 (2013.01); B29C 64/209 (2017.08); B29C 64/227 (2017.08); B29C 64/321 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B33Y 80/00 (2014.12); B29C 64/393 (2017.08); B29L 2031/7542 (2013.01); B33Y 50/02 (2014.12)] 17 Claims
OG exemplary drawing
 
8. A method for additive manufacturing of an implantable medical device, the method comprising:
feeding a substrate through a substrate channel in one or more heating cartridges, the substrate channel in fluid communication with an interior cavity of the one or more heating cartridges;
feeding at least a first filament through a filament port into the interior cavity of the one or more heating cartridges;
melting the first filament in the interior cavity of the one or more heating cartridges;
moving the one or more heating cartridges relative to the substrate at least in a longitudinal direction to form a first catheter jacket comprising material from at least the first filament, wherein forming the first catheter jacket comprises defining one or more protrusions extending from an outer surface of the first catheter jacket;
depositing one or more internal components on the first catheter jacket, wherein the one or more internal components are deposited between the one or more protrusions;
feeding at least a second filament through a filament port into the interior cavity of the one or more heating cartridges;
melting the second filament in the interior cavity of the one or more heating cartridges;
moving the one or more heating cartridges relative to the substrate at least in the longitudinal direction to form a second catheter jacket around the first catheter jacket and the one or more internal components, wherein the second catheter jacket comprises material from at least the second filament.