Patent application number | Description | Published |
20100076322 | METHOD AND APPARATUS FOR DETERMINING A RESPIRATION PARAMETER IN A MEDICAL DEVICE - A method of determining a respiration parameter in a medical device in which pressure signals are sensed to generate corresponding sample points, and a breath detection threshold is continuously adjusted in response to the generated sample points to generate a current adjusted breath detection threshold. A current generated sample point is compared to the current adjusted breath detection threshold, and the continuous adjusting of the breath detection threshold is suspended and the breath detection threshold is equal to the most current adjusted breath detection threshold generated prior to the suspending in response to the comparing. A next sample point, generated subsequent to the suspending, is compared to the set breath detection threshold, and the respiration parameter is determined in response to the comparing of a next sample point to the set breath detection threshold. | 03-25-2010 |
20100076323 | METHOD AND APPARATUS FOR DETERMINING A RESPIRATION PARAMETER IN A MEDICAL DEVICE - An apparatus for determining a respiration parameter in a medical device in which a pressure sensor senses pressure signals, and a signal processor, coupled to the pressure sensor, receives the sensed pressure signals and generates corresponding sample points. A microprocessor continuously adjusts a breath detection threshold in response to the generated sample points to generate a current adjusted breath detection threshold, compares a current generated sample point to the current adjusted breath detection threshold, suspends the continuous adjusting of the breath detection threshold and sets the breath detection threshold equal to the most current adjusted breath detection threshold generated prior to the suspending, and determines the respiration parameter in response to a comparing of a next generated sample point to the set breath detection threshold | 03-25-2010 |
20100076324 | METHOD AND APPARATUS FOR DETECTING RESPIRATORY EFFORT IN A MEDICAL DEVICE - A medical device for determining a respiratory effort having a pressure sensor to sense pressure signals, a housing having system components positioned therein, and a microprocessor positioned within the housing, wherein the microprocessor detects an inspiration and an expiration in response to the pressure signals, detects a breath in response to the detected inspiration and the detected expiration, and determines the respiratory effort in response to the detected breath. | 03-25-2010 |
20100076325 | METHOD AND APPARATUS FOR DETERMINING RESPIRATORY EFFORT IN A MEDICAL DEVICE - A method of determining respiratory effort in a medical device in which pressure signals are sensed to generate corresponding sample points, an inspiration and an expiration are detected in response to the sensed pressure signals, a breath is detected in response to the detected inspiration and the detected expiration, and the respiratory effort is determined in response to the detected breath. | 03-25-2010 |
20100076514 | FILTERING OF A PHYSIOLOGIC SIGNAL IN A MEDICAL DEVICE - A system and method for filtering a pressure signal in a medical device in which a sensor terminal senses the pressure signal, an electrode terminal receives cardiac electrical signals, a signal filtering system filters the sensed pressure signal in response to a determined heart rate to generate a heart-rate dependent frequency response, and a microprocessor derives a respiration signal in response to the heart rate dependent frequency response, and determines metrics of hemodynamic function in response to the derived respiration signal. | 03-25-2010 |
20110105858 | METHOD AND APPARATUS TO MONITOR CHANGE IN INSPIRATORY EFFORT USING INTRATHORACIC BLOOD PRESSURE WAVEFORM MORPHOLOGY - An implantable medical device and associated method detect obstructed inspiration by monitoring an blood pressure signal. A respiration signal is monitored and a phase of respiratory inspiration is detected from the respiration signal. A trend in the pressure signal is measured during the inspiration phase. Obstructed inspiration for the inspiration phase is detected in response to the measured the trend. | 05-05-2011 |
20120290032 | TECHNIQUES FOR MODIFYING BREATHING RATE USING CARDIAC PACING - A method includes controlling a cardiac pacing rate of an implantable medical device (IMD) to control a heart rate of a patient and determining that the patient is in a resting state. The method further includes modifying the pacing rate of the IMD for N cardiac cycles in response to determining that the patient is in the resting state. N is an integer greater than 1. Modifying the pacing rate includes incrementally increasing the pacing rate for a first portion of the N cardiac cycles, and incrementally decreasing the pacing rate for a second portion of the N cardiac cycles. | 11-15-2012 |
20120290033 | TECHNIQUES FOR MODIFYING BREATHING RATE USING CARDIAC PACING - A method includes controlling a cardiac pacing rate of an implantable medical device to control a heart rate of a patient and detecting inhalation and exhalation of the patient. The method further includes determining that the patient is in a resting state, and, in response to determining that the patient is in the resting state, incrementally increasing the pacing rate while exhalation of the patient is detected and incrementally decreasing the pacing rate while inhalation of the patient is detected. | 11-15-2012 |
20130197385 | RESPIRATORY FUNCTION DETECTION - A method and system for monitoring respiratory function that includes an impedance sensor configured to sense a first thoracic impedance waveform for at least one breath of a patient, a memory configured to store a first threshold slope value, and a processor configured to determine an first breath slope value in response to the impedance waveform, compare the first breath slope value to a first threshold slope value, and determine an indication of respiratory function of the patient in response to the comparing. | 08-01-2013 |
20130197386 | RESPIRATORY FUNCTION DETECTION - A system and method for monitoring respiratory function that includes an acoustic sensing device sensing an acoustic waveform ocurring during one of an inspiration phase associated with at least one breath of a patient and an expiration phase associated with at least one breath of a patient, and a processor configured to determine changes in high frequency acoustic amplitude associated with the sensed acoustic waveform and, in response to the determined changes in high frequency acoustic amplitude, determine an indication of respiratory function. | 08-01-2013 |