Patent ID: 6439541
Filing Date: 2002-08-27
Classification: A61B

Abstract:
A combination trocar sleeve (1, 1â€²) and valve for introducing instruments (9) into gas filled body spaces, said sleeve including an insertion tube (2, 2â€²) and a valve chamber (3, 3â€²) proximally arranged thereon with a duckbill valve (4, 4â€²) of elastic material disposed therein, said duckbill valve comprising a tubular body (5, 5â€²) that extends coaxially with respect to an axis of the insertion tube, said tubular body having, at its end directed toward the insertion tube (2, 2â€²), two flat oblique walls (7, 7â€²) that form a ridge with a slit (8, 8â€²) extending transverse to the tube axis, and wherein the tubular body (5, 5â€²), when uninstalled, has a size dimension in a direction transverse to the slit (8,8â€²), said size dimension being a first value, and wherein said internal valve chamber (3, 3â€²), which is adapted to receive said tubular body, has a size dimension of a second value, said first value being greater than said second value.