Abstract:
An apparatus, system and method for re-canalization or opening a passage through an occlusion in a blood vessel is disclosed. The apparatus and method, which are appropriate for both cardiovascular as well as peripheral vessels, use hydraulic pressure to drive a vibratable member (41), and the system includes a control unit (11) to permit the frequency or amplitude of oscillation of the vibratable member to be adjusted to suit the morphology or hardness of the target occlusion. Also disclosed is a method for adjusting the force of vibration.
Abstract:
The present invention details the design and operation of a miniaturized device array in which a range of simultaneous mechanical forces are produced by a single external pressure source. The invention is primarily embodied in a microfabricated device arrays designed to rapidly probe biological cell response to various combinations of mechanical, chemical and extra-cellular matrix parameters in a high-throughput fashion.
Abstract:
This invention relates to a tribology device for assessing mouthfeel-related tribological properties of a food sample, comprising a measuring surface composed of a thermoplastic polymer as an integral part.
Abstract:
A method of testing a surgical system that takes advantage of the fact that in a balanced irrigation/aspiration system (inflow = outflow) the duration of the aspiration pressure recovery to the irrigation fluid source pressure immediately following pump stop is independent of pump run time. This method provides a more reliable way of detecting restricted irrigation flow configurations not detectable by the current methods, such as marginal irrigation flow cases that could potentially lead to surgical complications (e.g. chamber collapse during post-occlusion break surge).
Abstract:
The invention provides an apparatus and method for testing the tendency of a paper to curl. The paper is cut from a paper making machine and rapidly humidified to standard TAPPI conditions, and is thereafter run through an apparatus having a substantially vertically oriented nip. The paper is measured for curl, all data are tabulated and fed back into a data acquisition or paper machine control system.
Abstract:
An apparatus (Fig 1) and method for monitoring a source gas for detection of phosgene and/or chlorine dioxide therein, in which the source gas is filtered for removal of hydrogen sulfide and/or chlorine and/or hydrogen chloride prior to monitoring of the source gas by a gas sensor (26) specific for phosgene or chlorine dioxide detection. The filter includes a support having Ag2O thereon, and when the source gas contains chlorine dioxide, chlorine also is present in the source gas prior to its filtration.
Abstract:
A method and apparatus for measurement of mass of small sample sizes. The method and apparatus is particularly adapted for providing microbalance measurement of solid materials as part of a combinatorial research program. The method and apparatus contemplate a system (100) including one resonator, or a plurality of resonators in a resonator array (110), adapted to monitor the response of a sample to a change in environmental condition, and correlating the response with mass change in the samples.
Abstract:
The invention relates to a method for the location-resolved, simultaneous detection of adhesion and friction and optionally of other material properties of a sample surface (30) to be examined. To this end a raster probe (1) is used which comprises a raster probe microscope. Said raster probe (1) and/or the sample (25) with the sample surface (30) to be examined are displaced until the raster probe (1), at a position (34) of the sample surface (30) to be examined, interacts in a defined manner with the same. The raster probe (1) and/or the sample (25) are subjected to a vertical oscillation and a measuring signal is recorded which characterizes the deformation of the raster probe (1). In addition, a second measuring signal is recorded which characterizes the deformation of the raster probe (1), whereby the raster probe (1) and/or the sample (25) are subjected to a horizontal and/or vertical oscillation. The desired material properties are now determined from both of these measuring signals using an appropriate evaluation device. The raster probe (1) and/or the sample (25) are displaced once again in order to record the entire surface area to be examined, and are brought into contact with the sample surface (30) in the above-described manner in order to repeat the described measuring procedure at the next position to be examined. The invention also relates to a suitable raster probe microscope for carrying out this method.