US 11,937,845 B2
Micro-invasive surgical device and methods of use
Darryl E. Barnes, Eagan, MN (US); and Jay Smith, Byron, MN (US)
Assigned to Mayo Foundation for Medical Education and Research, Rochester, MN (US)
Appl. No. 17/421,255
Filed by Mayo Foundation for Medical Education and Research, Rochester, MN (US)
PCT Filed Jan. 8, 2020, PCT No. PCT/US2020/012682
§ 371(c)(1), (2) Date Jul. 7, 2021,
PCT Pub. No. WO2020/146458, PCT Pub. Date Jul. 16, 2020.
Claims priority of provisional application 62/853,930, filed on May 29, 2019.
Claims priority of provisional application 62/791,269, filed on Jan. 11, 2019.
Prior Publication US 2022/0117619 A1, Apr. 21, 2022
Int. Cl. A61B 17/32 (2006.01)
CPC A61B 17/320036 (2013.01) [A61B 17/32002 (2013.01); A61B 2017/320032 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tissue cutting device, comprising:
a handle;
a first blade coupled to the handle via a break point; and
a second blade coupled to the handle, the second blade comprising a cutting surface,
wherein rotation of the handle causes the second blade to rotate from a first position, in which the second blade lies in a same plane as the first blade, to a second position, in which the second blade lies in a different plane than the first blade,
wherein the handle and the second blade comprise a single integral structure, and
wherein rotating the second blade from the first position to the second position breaks the break point and separates the first blade from the handle.