Abstract: A compliant stator motor is disclosed. In one implementation, the motor (200) includes a rotor (210), a stator (220) having main and auxiliary windings, an outer motor case (230), and a group of isolators (240) positioned between the stator (220) and outer motor case (230) to enhance forces applied to the foundation (260) due to excitation of the auxiliary windings. In another implementation, the motor (300) includes a rotor (310), a stator (320) including main and auxiliary windings, linear bearings (320) configured to constrain a motion of the stator (320) to an axial direction, and isolators (330) connected to the stator (320) and configured to enhance axial forces applied to the foundation due to excitation of the auxiliary windings.

Abstract: A method and system is provided for assuring the integrity of data used to evaluate financial risk or exposure in trading portfolios such as portfolios of derivative contracts by looking for sweeping changes or statistically significant trends suggestive of possible errors. The method and system uses Content Analysis to measure the changes in the information content or entropy of data to detect abnormal changes that may require human intervention. A graphical user interface can also be provided that provides a mechanism for alerting users of possible errors and also gives an indication of the severity of the detected abnormality.

Abstract: A medical device system and method allows an arterial bypass graft to be proximally anastomosed to an aorta during a beating heart procedure without substantial loss of blood by use of an endolumenal aorta isolation assembly provided along the distal end portion of an elongate catheter body. The aorta isolation assembly includes proximal and distal portions that are separated by an isolation region and that are adjustable to first and second extended positions, respectively, which are adapted to circumferentially engage the aortic wall and isolate upstream and downstream aspects of an exterior space between the elongate body and the aortic wall. The intermediate region is adapted to be positioned along the proximal anastomosis site such that the distal and proximal portions when adjusted to the first and second extended positions circumferentially engage the aortic wall on upstream and downstream sides of the proximal anastomosis site.

Abstract: A medical device assembly is adapted to isolate the heart from systemic circulation while perfusing oxygenated blood to the systemic arterial circulation during a minimally invasive bypasss procedure. An arterial catheter with an external shunt valve forms a funnel which shunts antegrade aortic blood flow from the aortic root, into a distal flow port and through an internal flow lumen in the catheter, out an intermediate flow port along the catheter proximally of the anchor, and into the systemic arterial circulation. A distal internal valve selectively occludes the shunted antegrade aortic blood flow between the distal flow port and the intermediate flow port and isolates the left heart chambers from the systemic arterial circulation. Oxygenated blood may then flow from a cardiopulmonary bypass pump, distally through the internal flow lumen, out the intermediate port.

Abstract: An extracorporeal support system including an extracorporeal support apparatus and an arterial circulation support catheter. The arterial circulation support catheter includes a blood lumen with a proximal end coupled to extracorporeal support apparatus and a distal end inserted into the blood circulation. A vent lumen has a distal end that crosses the aortic valve into the left ventricle and provides direct venting of the left ventricle through the vent lumen. An arterial circulation support catheter occluding member is positioned either in an interior or at an exterior of the arterial circulation support catheter. A venous circulation support catheter is provided and includes a blood lumen with a proximal end coupled to the extracorporeal support apparatus and a distal end inserted into the blood circulation. A venous circulation support catheter occluding member is included and positioned in an interior or at an exterior of the venous circulation support catheter.

Abstract: An extracorporeal support system including an extracorporeal support apparatus and an arterial circulation support catheter. The arterial circulation support catheter includes a blood lumen with a proximal end coupled to extracoporeal support apparatus and a distal end inserted into the blood circulation. A vent lumen has a distal end that crosses the aortic valve into the left ventricle and provides direct venting of the left ventricle through the vent lumen. An arterial circulation support catheter occluding member is positioned either in an interior or at an exterior of the arterial circulation support catheter. A venous circulation support catheter is provided and includes a blood lumen with a proximal end coupled to the extracorporeal support apparatus and a distal end inserted into the blood circulation. A venous circulation support catheter occluding member is included and positioned in an interior or at an exterior of the venous circulation support catheter.

Abstract: A medical device system and method allows an arterial bypass graft to be proximally anastomosed to an aorta during a beating heart procedure without substantial loss of blood by use of an endolumenal aorta isolation assembly provided along the distal end portion of an elongate catheter body. The aorta isolation assembly includes proximal and distal portions that are separated by an isolation region and that are adjustable to first and second extended positions, respectively, which are adapted to circumferentially engage the aortic wall and isolate upstream and downstream aspects of an exterior space between the elongate body and the aortic wall. The intermediate region is adapted to be positioned along the proximal anastomosis site such that the distal and proximal portions when adjusted to the first and second extended positions circumferentially engage the aortic wall on upstream and downstream sides of the proximal anastomosis site.

Abstract: An analytical cartridge adapted for use in analyzing fluids for spectrophotometry. The cartridge includes a plumbing system composed of the cuvette and various wells or chambers which are interconnected by passageways. After introduction into the cartridge, liquid samples are separated (if necessary) and transported to a cuvette utilizing a sequential application of centrifugal force followed by pressurization of the system. The cartridge may be used in a wide variety of spectrophotometric procedures to measure the concentration of a wide variety of constituents in fluids, including bodily fluids which contain liquid and solid components.

Abstract: A medical device assembly is adapted to isolate the heart from systemic circulation while perfusing oxygenated blood to the systemic arterial circulation during a minimally invasive bypass procedure. The assembly includes an arterial catheter with an external shunt valve which forms an anchor to secure the distal end portion within the aortic arch and which also forms a funnel which shunts antegrade aortic blood flow from the aortic root, into a distal flow port and through an internal flow lumen in the catheter, out an intermediate flow port along the catheter proximally of the anchor, and into the systemic arterial circulation. A distal internal valve is further provided within the internal flow lumen between the distal and intermediate flow ports. The distal internal valve selectively occludes the shunted antegrade aortic blood flow between the distal flow port and the intermediate flow port and isolates the left heart chambers from the systemic arterial circulation.

Abstract: A method of forming a duct liner from a duct insulation board includes cutting a plurality of parallel grooves into duct boards with a plurality of rotary saw blades which are spaced on 1.57 inch or 3.14 inch centers. The saw blades have peripheral teeth which project outwardly on both sides of the saw blades to form grooves in a first major surface of a duct board which are wider than the saw blades. The grooves have sidewalls which extend perpendicular to the first major surface of the duct board and have a depth from 70% to 90% of the thickness of the duct board. The first major surface is typically coated and a second major surface of the duct board normally has a facing adhered thereto. After the duct board is grooved, the duct board can be curved to conform to the curvature of a tubular metal shell, with the parallel grooves of the duct board extending parallel to the axis of curvature, and placed in the tubular metal shell as a liner to form an insulated air duct.

Abstract: A system for providing total isolation of the heart includes an extracorporeal support apparatus. An arterial circulation support catheter is provided having a blood lumen with a proximal end coupled to the extracorporeal support apparatus and a distal end positioned in the aortic root and a left side of the heart. An arterial circulation support catheter occluding member is coupled to the arterial circulation support catheter. The arterial circulation support catheter occluding member is positioned to prevent blood flow into the left ventricle or left side of the heart. A venous circulation support catheter includes a blood lumen with a proximal end coupled to the extracorporeal support apparatus, and a distal end inserted into the blood circulation A venous circulation support catheter occluding member is coupled to the venous circulation support catheter and positioned between the superior vena cava and the inferior vena cava.

Abstract: An extracorporeal support system including an extracorporeal support apparatus and an arterial circulation support catheter. The arterial circulation support catheter includes a blood lumen with a proximal end coupled to extracorporeal support apparatus and a distal end inserted into the blood circulation. A vent lumen has a distal end that crosses the aortic valve into the left ventricle and provides direct venting of the left ventricle through the vent lumen. An arterial circulation support catheter occluding member is positioned either in an interior or at an exterior of the arterial circulation support catheter. A venous circulation support catheter is provided and includes a blood lumen with a proximal end coupled to the extracorporeal support apparatus and a distal end inserted into the blood circulation. A venous circulation support catheter occluding member is included and positioned in an interior or at an exterior of the venous circulation support catheter.

Abstract: A duct insulation board grooving apparatus cuts a plurality of parallel grooves into duct boards with a plurality of rotary saw blades which are spaced on 1.57 inch or 3.14 inch centers. The saw blades have peripheral teeth which project outwardly on both sides of the saw blades to form grooves in a first major surface of a duct board which are wider than the saw blades. The grooves have sidewalls which extend perpendicular to the first major surface of the duct board and have a depth from 70% to 90% of the thickness of the duct board. The first major surface is typically coated and a second major surface of the duct board normally has a facing adhered thereto. After the duct board is grooved, the duct board can be curved to conform to the curvature of a tubular metal shell, with the parallel grooves of the duct board extending parallel to the axis of curvature, and placed in the tubular metal shell as a liner to form an insulated air duct.