| Patent application number | Description | Published |
|---|
| 20080200865 | DIALYSIS SYSTEM HAVING OPTICAL FLOWRATE DETECTION - A medical fluid machine includes an enclosure; a disposable unit accepted by the enclosure, the disposable unit including a conduit through which a medical fluid can flow, the conduit including a viewing portion; a light source configured and arranged to emit light onto the viewing portion of the conduit; a camera focused on the viewing portion of the conduit; and a processor configured to determine a speed of a particle entrained in the medical fluid based on at least two images of the particle in the viewing area taken by the camera. | 08-21-2008 |
| 20080200867 | DIALYSIS SYSTEM HAVING DISPLAY WITH ELECTROMAGNETIC COMPLIANCE ("EMC") SEAL - A medical machine includes: an enclosure defining an opening, at least a portion of the enclosure being electrically conductive and acting as a first capacitor plate; a medical device component located inside the enclosure; a window placed adjacent to the opening; a video display with an at least partially conductive case acting as a second capacitor plate; and a dielectric member placed between the first and second capacitor plates, the plates and dielectric member forming a capacitor configured to prevent leakage of electromagnetic energy from the enclosure. | 08-21-2008 |
| 20080200868 | DIALYSIS SYSTEM HAVING VIDEO DISPLAY WITH AMBIENT LIGHT ADJUSTMENT - A medical therapy machine includes: an enclosure; a medical therapy machine component located inside the enclosure; a video monitor supported by the enclosure and displaying at least one of information and indicia relating to the medical therapy; an ambient light sensor positioned with respect to the enclosure so as to be able to sense a level of ambient light impinging the enclosure; and a logic implementor configured to control a level of backlight brightness for the video monitor based on the level of ambient light sensed by the sensor. | 08-21-2008 |
| 20080200869 | DIALYSIS SYSTEM WITH EFFICIENT BATTERY BACK-UP - A medical fluid machine includes: an enclosure; at least one medical fluid delivery component located inside the enclosure, the component capable of being powered by an external power source or a back-up battery; a transistor in electrical communication with the battery; and a regulator configured to: (i) receive as feedback a supply voltage; and (ii) vary a gate voltage at the transistor to maintain the supply voltage at least substantially at a desired level. | 08-21-2008 |
| 20090213519 | MEDICAL FLUID MACHINE HAVING SOLENOID CONTROL SYSTEM WITH TEMPERATURE COMPENSATION - A medical fluid machine having a solenoid control system with temperature compensation includes an electromechanical solenoid including an armature and a coil, a voltage source, a switching device configured to selectively apply power from the voltage source to the solenoid coil, and a control element connected electrically to the switching device and operable to receive at least one signal indicative of a resistance of the coil and using the signal to control the switching device to selectively apply power from the voltage source to the solenoid coil. | 08-27-2009 |
| 20090213520 | MEDICAL FLUID MACHINE HAVING SOLENOID CONTROL SYSTEM WITH REDUCED HOLD CURRENT - An electromechanical solenoid control system with reduced hold current includes an electromechanical solenoid including an armature and a coil; a voltage source; a resistor placed in an electrical line between the voltage source and the solenoid coil; a switching device configured to selectively apply power from the voltage source to the solenoid coil; and a control element connected electrically to the switching device, the control element operable to receive a signal from the electrical line and use the signal to control the switching device to selectively apply power from the voltage source to the solenoid coil. | 08-27-2009 |
| 20090213521 | DIALYSIS MACHINE HAVING MULTIPLE LINE VOLTAGE HEATER - A dialysis machine having a multiple line voltage heater includes first and second heater elements, first and second switching devices connected electrically to the first and second heating elements, first and second power lines, and a control element configured to provide a first switching device state in which power at a first voltage is supplied via the first and second power lines to both first and second heater elements via both first and second switching devices and a second switching device state in which power at a second voltage is supplied via the first and second power lines to the first heater element only via the first switching device. | 08-27-2009 |
| 20090312694 | DISTRIBUTED PROCESSING SYSTEM AND METHOD FOR DIALYSIS MACHINES - A dialysis machine includes a control unit having a user interface; a heater(s) located separate from the control unit; a supervisory processor located with the control unit; a delegate control processor located with the heater(s), the delegate control processor in communication with the supervisory processor and configured to receive load cell, heater(s) plate and supply bag temperature sensor inputs; and a sub-delegate heater(s) processor in communication with the control processor and configured to control power to the heater(s). The machine can also include primary and secondary monitoring processors that perform a safety check to the control processing and monitor the load cell. | 12-17-2009 |
| 20100308243 | SOLENOID PINCH VALVE APPARATUS AND METHOD FOR MEDICAL FLUID APPLICATIONS HAVING REDUCED NOISE PRODUCTION - A low noise solenoid valve system includes a solenoid valve; and a controller configured to perform a power actuation sequence in which power to the solenoid valve undergoes a plurality of cycles that switch from an actuation level power to a hold level power, wherein the actuation level power is increased at each subsequent cycle, and wherein the actuation power level of one of the plurality of cycles is sufficient to fully actuate the solenoid valve. | 12-09-2010 |
