US 11,850,388 B2
Method for testing suitability of microneedle material suitable for manufacture employing elongation process, and microneedle manufacturing method comprising same
Ju Young Jin, Goyang-si (KR); Moon Su Lee, Anyang-si (KR); Tae Hyung Kim, Gimpo-si (KR); Jung Dong Kim, Incheon (KR); and Do Hyeon Jeong, Seoul (KR)
Assigned to RAPHAS CO., LTD., Seoul (KR)
Filed by RAPHAS CO., LTD., Seoul (KR)
Filed on Jun. 9, 2021, as Appl. No. 17/343,061.
Application 17/343,061 is a continuation of application No. PCT/KR2019/007466, filed on Jun. 20, 2019.
Claims priority of application No. 10-2018-0159987 (KR), filed on Dec. 12, 2018.
Prior Publication US 2021/0290922 A1, Sep. 23, 2021
Int. Cl. A61M 37/00 (2006.01); B29D 99/00 (2010.01); G01N 11/02 (2006.01)
CPC A61M 37/0015 (2013.01) [B29D 99/00 (2013.01); G01N 11/02 (2013.01); A61M 2037/0053 (2013.01); A61M 2205/70 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of manufacturing a microneedle, the method comprising:
selecting and providing a microneedle material whose viscosity/elastic modulus measured for each shear rate using a viscoelasticity measuring equipment falls in a range between a predetermined upper limit and a predetermined lower limit; and
manufacturing the microneedle using the selected and provided microneedle material by an extension process.