US 12,220,158 B2
Cutting blades for bipolar surgical instruments
Marno Nagtegaal, Wales (GB); and Lewis Jones, Cardiff (GB)
Assigned to GYRUS MEDICAL LIMITD, Cardiff (GB)
Filed by Gyrus Medical Limited, Cardiff (GB)
Filed on Aug. 2, 2018, as Appl. No. 16/052,985.
Claims priority of application No. 1712541 (GB), filed on Aug. 4, 2017.
Prior Publication US 2019/0038342 A1, Feb. 7, 2019
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01); A61B 18/12 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 2018/00601 (2013.01); A61B 2018/00607 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/126 (2013.01); A61B 2018/1452 (2013.01); A61B 2018/1455 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A substantially planar elongate cutting blade for a bipolar surgical instrument, the cutting blade defining a longitudinal axis with a proximal end and a distal end, the cutting blade having first and second opposed edges, the cutting blade comprising:
a proximal end region which extends from the proximal end between the first and second edges over a first distance in a direction perpendicular to the longitudinal axis, a distal end region which extends from the proximal end region to the distal end; and
a cutting edge at the distal end of the cutting blade, wherein:
the first and second edges of the cutting blade have respective first and second distal end portions that extend along the distal end region to the cutting edge at the distal end of the cutting blade at fixed first and second acute angles respectively with respect to the longitudinal axis; and
the cutting edge extends between the first and second distal end portions of the first and second edges over a second distance in the direction perpendicular to the longitudinal axis;
the first distance is greater than the second distance, the cutting edge extends transversely at a third angle with respect to the longitudinal axis, the third angle is not equal to the first or second angle, and
the cutting blade defines an elongate slot therethrough, the slot extending between the first and second distal end portions in a direction along the longitudinal axis and narrowing at the distal end region such that edges of the slot define acute angles relative to the longitudinal axis.