Abstract: Apparatus, systems and methods are provided for analyzing relative compliance in the peripheral vasculature that generally involve generating a plethysmograph (PG) signal, generating one or more pressure waveforms and comparing the pressure waveform(s) relative to the PG signal to determine compliance indexes associated particular regions of the vasculature. A relative compliance ratio may also be determined by comparing arterial and venous relative compliance indexes. Apparatus, systems and methods are also provided for analyzing a PG waveform that generally involve generating a plethysmograph (PG) signal and comparing amplitude modulation of the PG signal relative to baseline modulation of the PG signal to estimate a relationship between left ventricular end diastolic pressure and stroke volume. The estimated relationship may account for a phase offset for the time between when changes in venous return affect left ventricular end diastolic pressure and stroke volume.

Abstract: A surgical equipment supporting frame comprises a plurality of interconnected branches, an arm portion connected to at least one of the plurality of branches, wherein the arm portion extends over an operating table, and moves to different positions along the operating table, and a surgical tool connected at an end of the arm portion.

Abstract: A surgical utility tube, comprising a plurality of members, wherein the plurality of members are joined together to form a continuous first tube, wherein the first tube is bendable to a plurality of angles along a length of the first tube, and wherein the first tube locks at each of the plurality of angles, and a second tube positioned in the first tube.

Abstract: The present invention relates generally to a multichannel pipetting system that can be used with a plurality of well plates used for medical, biological or biochemical research involving liquid materials. The system includes a multichannel pipettor and novel pipette tips having a crown that can be fitted over the opening of more than one channel. The multichannel pipettor may optionally be provided with an array of air pressure channels placed among the array of pipetting channels and enables the pipettor to aspirate and dispense a crude large volume of liquid material through the novel pipette tips of the present invention.