	US 12,193,703 B2
	Cutting instrument with asymmetric blade
Xiangqun Chen, Santa Clarita, CA (US); Rodney Hawkins, Santa Clarita, CA (US); Adam Evard, Los Angeles, CA (US); Alex Soriano, Ventura, CA (US); and Ofer Rosenzweig, West Hills, CA (US)
Assigned to Pacesetter, Inc., Sylmar, CA (US)
Filed by Pacesetter, Inc., Sylmar, CA (US)
Filed on Jun. 18, 2021, as Appl. No. 17/351,427.
Claims priority of provisional application 63/082,109, filed on Sep. 23, 2020.
Prior Publication US 2022/0087708 A1, Mar. 24, 2022
Int. Cl. A61B 17/3209 (2006.01); A61B 17/32 (2006.01); A61B 17/3211 (2006.01); A61B 17/34 (2006.01); A61F 9/007 (2006.01); A61F 9/013 (2006.01); B26B 21/56 (2006.01); B26D 1/00 (2006.01)

CPC A61B 17/32093 (2013.01) [A61B 17/32 (2013.01); A61B 17/3209 (2013.01); A61B 17/3211 (2013.01); A61B 2017/3454 (2013.01); A61F 9/007 (2013.01); A61F 9/00754 (2013.01); A61F 9/00763 (2013.01); A61F 9/0133 (2013.01); B26B 21/56 (2013.01); B26D 2001/0053 (2013.01)]

20 Claims

1. A medical cutting instrument, comprising:

a blade having a body extending along a longitudinal center axis, the body having a proximal end configured to attach to a handle and a distal tip remote from the handle,

first, second, and third cutting edges along the body oriented at corresponding angles with respect to the longitudinal center axis, each of the corresponding angles being non-zero and less than 90 degrees, the first, second, and third cutting edges asymmetrically distributed with respect to the longitudinal center axis to initiate a puncture-type incision in patient tissue with a desired puncture force, wherein the second cutting edge extends from the first cutting edge to the third cutting edge and intersects the longitudinal center axis,

wherein the body includes opposite first and second non-cutting edges that define a width of the blade to limit a width of the puncture-type incision, wherein the first cutting edge extends from the first non-cutting edge and the third cutting edge extends from the second non-cutting edge.