US 12,083,296 B2
Kink resistant peel away sheath
Clifford M. Liu, Danvers, MA (US)
Assigned to Abiomed, Inc., Danvers, MA (US)
Filed by Abiomed, Inc., Danvers, MA (US)
Filed on Dec. 9, 2019, as Appl. No. 16/707,923.
Claims priority of provisional application 62/777,598, filed on Dec. 10, 2018.
Prior Publication US 2020/0179657 A1, Jun. 11, 2020
Int. Cl. A61M 25/06 (2006.01); A61L 29/08 (2006.01); A61M 25/00 (2006.01); A61M 25/01 (2006.01)
CPC A61M 25/0668 (2013.01) [A61L 29/085 (2013.01); A61M 25/005 (2013.01); A61M 2025/0188 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A sheath for insertion into a vasculature of a patient, the sheath comprising:
a sheath body having an outer surface, a longitudinal axis and a lumen formed therethrough, the sheath body comprising an inner layer arranged about the longitudinal axis, an outer layer coaxially arranged with the inner layer, and a support layer positioned between the inner and outer layers, wherein the inner, outer and support layers are laminated together to form the sheath body; and
at least one shear line formed in the sheath body, the at least one shear line configured to facilitate the longitudinal separation of the sheath body along the at least one shear line,
wherein each of the at least one shear line is defined by a monofilament positioned between the support layer and outer layer, before the inner, outer, and support layers are laminated together such that the at least one shear line, as formed, is positioned beneath the outer surface of the sheath body and within the outer layer.