| Patent application number | Description | Published |
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| 20090118626 | Calculating Respiration Parameters Using Impedance Plethysmography - A method of determining a value for a respiration parameter in a test subject can include capturing—using a fully implanted system that includes a wireless transmitter and at least a first lead wire having a first electrode disposed thereon and a second lead wire having a second electrode disposed thereon—information indicative of an impedance measure between the first and second electrodes and across a thoracic region of the test subject; wirelessly transmitting, from the implanted system and to external equipment, the captured information; and determining a respiration parameter of the test subject based on the captured information. The at least first and second lead wires can be positioned in the test subject subcutaneously and external of any cranial, thoracic, abdominal and pelvic cavities of the test subject | 05-07-2009 |
| 20090270750 | Biopotential Signal Source Separation Using Source Impedances - Cardiac methods and devices that separate signals using at least two composite signals acquired at least at two input impedances. A target source impedance may be selected, and a cardiac signal may be separated from composite signals using the selected target source impedance. Medical systems include a cardiac device having a housing that provides amplification circuitry configured to have a first amplifier input impedance and a second amplifier input impedance, such as using two separate circuits or switching between two input impedances. One or more electrode assemblies are coupled to the amplification circuitry. A signal processor is provided in the housing configured to separate a source signal using a first composite signal detected at the first input impedance and a second composite signal detected at the second input impedance. The phase response of the first input amplifier circuit is about equal to that of the second input amplifier circuit. | 10-29-2009 |
| 20110098587 | Subcutaneous Cardiac Signal Discrimination Employing Non-Electrophysiologic Signal - A cardiac monitoring and/or stimulation system includes a housing coupled to a plurality of electrodes configured for subcutaneous non-intrathoracic sensing. A signal processor receives a plurality of composite signals associated with a plurality of sources, separates a signal from the plurality of composite signals, and identifies the separated signal as a cardiac signal using information derived from a non-electrophysiologic sensor, such as an accelerometer or acoustic transducer. The signal processor may iteratively correlate separated signals from the plurality of composite signals with a non-electrophysiologic sensor signal until the cardiac signal is identified. | 04-28-2011 |
| Patent application number | Description | Published |
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| 20090024186 | SYSTEMS AND METHODS FOR PROVIDING NEURAL STIMULATION TRANSITIONS - A method embodiment comprises generating a neural stimulation signal for a neural stimulation therapy. The signal is generated during a duty cycle of a stimulation period to provide the neural stimulation therapy with an intensity at a therapy level for a portion of the duty cycle. In various embodiments, a ramp up protocol is implemented to begin the duty cycle, a ramp down protocol is implemented to end the duty cycle, or both the ramp up protocol and the ramp down protocol are implemented. The ramp up protocol includes ramping up the intensity from a non-zero first subthreshold level for the neural stimulation therapy at the beginning of the duty cycle to the therapy level. The ramp down protocol includes ramping down the intensity from the therapy intensity level to a non-zero second subthreshold level for the neural stimulation therapy at the end of the duty cycle. | 01-22-2009 |
| 20090326387 | Electrocardiogram and Respiration Monitoring in Animals - An ambulatory animal monitoring system includes a wearable structure constructed to be worn about a body of a non-human animal to be monitored. The system includes a plurality of electrical signal conduits each associated with the wearable structure and each connectable to a different one of a plurality of surface electrode components. The system includes processing and control device adapted to be worn with the wearable structure, the processing and control device comprising a) an ECG monitoring component and b) an impedance level monitoring component that generates data indicative of electrical impedance levels of the animal over time. | 12-31-2009 |
| 20090326510 | Drug Delivery Methods and Systems - Drug delivery methods and systems that include a determination of whether a cardiac condition is normal or abnormal, so that a drug may be administered in accordance with that determination. In one implementation, a drug delivery device may be controlled to reduce or stop the drug administration when a normal cardiac condition is detected. In another implementation, a patient monitoring device determines the duration that a cardiac condition is normal and provides an output indicative of the determination so that the patient may alter a therapy accordingly. | 12-31-2009 |
| 20100121399 | CLOSED LOOP NEURAL STIMULATION SYNCHRONIZED TO CARDIAC CYCLES - Various aspects of the present subject matter relate to a method. According to various method embodiments, cardiac activity is detected, and neural stimulation is synchronized with a reference event in the detected cardiac activity. Neural stimulation is titrated based on a detected response to the neural stimulation. Other aspects and embodiments are provided herein. | 05-13-2010 |
| 20110106199 | CLOSED LOOP NEURAL STIMULATION SYNCHRONIZED TO CARDIAC CYCLES - Various aspects of the present subject matter relate to a method. According to various method embodiments, cardiac activity is detected, and neural stimulation is synchronized with a reference event in the detected cardiac activity. Neural stimulation is titrated based on a detected response to the neural stimulation. Other aspects and embodiments are provided herein. | 05-05-2011 |
