US 12,465,731 B2
Methods of manufacturing nested balloons utilizing pressurized constrained annealing
Eric Mabry, Trabuco Canyon, CA (US); Matthew F. Tonge, Costa Mesa, CA (US); Don Ngo-Chu, Milpitas, CA (US); and Kevin Justin Herrera, Sherman Oaks, CA (US)
Assigned to Confluent Medical Technologies, Inc., Fremont, CA (US)
Filed by Confluent Medical Technologies, Inc., Fremont, CA (US)
Filed on Dec. 7, 2021, as Appl. No. 17/544,204.
Application 17/544,204 is a continuation of application No. 17/018,884, filed on Sep. 11, 2020, abandoned.
Application 17/018,884 is a continuation of application No. 14/924,278, filed on Oct. 27, 2015, abandoned.
Claims priority of provisional application 62/069,303, filed on Oct. 27, 2014.
Prior Publication US 2022/0161008 A1, May 26, 2022
Int. Cl. A61M 25/10 (2013.01); B29C 49/00 (2006.01); B29C 65/02 (2006.01); B29L 31/00 (2006.01)
CPC A61M 25/1029 (2013.01) [A61M 25/1011 (2013.01); B29C 49/00 (2013.01); B29C 65/022 (2013.01); A61M 2025/1013 (2013.01); A61M 2025/1031 (2013.01); A61M 2025/1075 (2013.01); B29L 2031/7543 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A nested balloon formed by the method comprising:
providing a first balloon layer;
providing a second balloon layer;
inserting the first balloon layer into the second balloon layer to form a nested balloon;
constrained pressurized annealing the first balloon layer and the second balloon layer at a temperature of between about 200° F. and about 300° F. for a time period of between about 10 minutes and about 90 minutes;
wherein constrained pressurized annealing comprises pressurizing the nested balloon at a pressure of between about 2 atm and about 30 atm,
wherein a lot of nested balloons after constrained pressurized annealing comprises a higher minimum burst strength as a result of a lower percentage standard deviation compared with a lot of nested balloons not employing constrained pressurized annealing, and
wherein the first balloon layer is configured to slide relative to the second ballon layer.