Mark S. Zeiner,Paul T. Franer,Michael S. Cropper,Thomas A. Gilker,Geoffrey C. Hueil,David K. Norvell,Brian J. Thompson,Aaron C. Voegele
申请号：
US10815356
公开号：
US09486241B2
申请日:
2004.03.31
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A trocar for performing a procedure on a patient. The trocar has a hollow cannula with a distal end and a proximal end. The trocar also has a housing with a distal end attached to the proximal end of the cannula and a proximal end having a wall attached thereto. The wall has an aperture therethrough. The trocar further includes a seal assembly disposed within the housing. The seal assembly includes a first substantially rigid ring, a second substantially rigid ring, and a plurality of layered elastomeric members compressed therebetween. The first ring has a plurality of distally extending protrusions extending from a distal surface thereof, and the second ring has a plurality of proximally extending protrusions extending from a proximal surface thereof.
