METHOD AND APPARATUS FOR DETECTING RESPIRATORY EFFORT IN A MEDICAL DEVICE
First Claim
Patent Images
1. A medical device for determining a respiratory effort, comprising:
- 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.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
-
Citations
20 Claims
-
1. A medical device for determining a respiratory effort, comprising:
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A medical device for determining respiratory effort, comprising:
-
means for sensing cardiac pressure signals; means for sensing cardiac signals and determining a heart rate in response to the sensed cardiac signals; means for filtering the sensed pressure signals in response to the determined heart rate to generate a heart-rate dependent frequency response; means for deriving a filtered signal in response to the heart rate dependent frequency response; means for generating sample points in response to the derived filtered signal; means for detecting an inspiration in response to a first predetermined number of sample points corresponding to the sensed pressure signals being less than a detection threshold; means for detecting an expiration in response to a second predetermined number of sample points corresponding to the sensed pressure signals, occurring subsequent to the first predetermined number of sample points, being greater than the detection threshold; means for detecting a breath in response to the detected inspiration and the detected expiration; and means for determining the respiratory effort in response to the detected breath. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification