Other

Regents of the University of Minnesota

Van N Michalek

Henry Buchwald

Hector J Menchaca

Thomas J O'Dea

Thomas D Rohde

Arthur Guy Erdman

Nestor B Suguitani

Mitsuhiro Oura

A surgical access system including an access port device. The port device has a port member, a plurality of blades, and an articulation mechanism. The blades are circumferentially arranged about a longitudinal axis of the port member to collectively define an access region. The articulation mechanism defines a pivot point along a length of each blade, and is operable to articulate the blades between collapsed and expanded states. The blade tips collectively define a diameter in the collapsed state that is less than that in the expanded state. The blades rotate about the corresponding pivot point, and the pivot points move longitudinally relative to the port member, in transitioning between the contracted and expanded states. Light source(s) can be integrated with the blades or separately provided to enhance surgical field visibility.

Micro-orifice surgical access system

The present invention relates to a method and apparatus for determining blood oxygen transport, and to measure lipid levels by correlating these levels with the rate at which oxygen diffuses through the red blood cell membrane.

Method and apparatus for determining blood oxygen transport

Growing community of inventors

Arden Hills, MN, United States of America

Van N Michalek