Abstract: An improved hinge system for pivotally coupling a skate lower portion to a skate upper cuff. The multi-hinge design incorporates a four link chain mechanism that greatly increases the number of design options for a hinged boot. The pivot axis defined by the four link chain can be designed to shift through a path of travel that generally coincides with the path of travel of the anatomical pivot axis defined by the user's foot and leg. The upper cuff and boot lower portion account for two of the four links of the four link mechanism. The other two links are either rigid bars with pin connections on both the upper cuff and the lower portion, or roller links with a pin connection to the upper and a slot like sliding surface on the lower portion. A slider link can be substituted for the roller and a slide surface can be substituted for the slot.

Abstract: This document discusses, among other things, a ureteroscope having a notch or other structure at a distal end configured to engage a guide wire and facilitate cannulation.

Abstract: This patent document discusses assemblies and methods for transferring a subject from a first surface to a second surface. In varying examples, an assembly includes a first roller and a second roller. An assembly frame rotatably supports the rollers and, in some examples, longitudinally extends from a frame first end to a frame second end. A belt is coupled to the first and second rollers in such a matter that the assembly frame is positioned, at least in part, between the rollers and surrounded by the belt. A motor, powered by a power source, is coupled to the belt via the first or second roller. In one such example, the motor is coupled with a portion of a first roller inner surface. In another example, an outer surface of one or both of the rollers include belt driving projections matable with projection receiving portions disposed on a belt underside surface.

Abstract: The invention provides an electro-physiological system and various techniques for substantially canceling direct current (DC) offset while amplifying low frequency biological signals, e.g. local field potentials. In particular, the measured results of the invention show a DC offset rejection ratio of approximately greater than 100 dB. In one embodiment, the invention provides a method comprising receiving a biological signal including a frequency component and a DC (direct current) component, attenuating the frequency component of the biological signal to generate a second signal, and subtracting the second signal from the biological signal to generate a third signal.

Abstract: Techniques are described for analyzing auscultatory sounds to aid a medical professional in diagnosing physiological conditions of a patient. A data analysis system, for example, applies singular value decomposition to auscultatory sounds associated known physiological conditions to define a set of one or more disease regions within a multidimensional space. A diagnostic device, such as an electronic stethoscope or personal digital assistant, applies configuration data from the data analysis system to generate a set of one or more vectors within the multidimensional space representative of auscultatory sounds associated with a patient. The diagnostic device outputs a diagnostic message associated with a physiological condition of the patient based on the orientation of the vectors relative to the disease regions within the multidimensional space.