The system also includes signal processing circuitry for conditioning and converting analog signals generated by the transducers into digital data. The transducers detect the sound or vibration of the body at these sites. The system includes a plurality of transducers, such as microphones, that may be placed at preselected sites around a patient's chest. Descriptionīriefly, the invention relates to a system for recording, displaying and analyzing lung sounds to facilitate the diagnosis of various pulmonary diseases. Additionally, the system may include an analysis program for comparing selected criteria corresponding to the detected abnormal sounds with predefined thresholds in order to provide a likely diagnosis. The resulting information may be displayed in a variety of formats to facilitate diagnosis. The system may also include application programs for detecting and classifying abnormal sounds. In a second display element, the data for inspiration and expiration are shown individually in a second time scale that is time-expanded relative to the first time scale. In a first display element, the data is shown for both inspiration and expiration combined in a first time scale. The combinational display includes at least two display elements. A data collection and organization program, executing on the computer station, organizes and formats the data into a combination display for display or printing. The microphones are coupled to signal processing circuitry and A/D converters which digitize the data and preferably provides the digital data to a computer station.
The system includes a plurality of transducers that may be placed at various sites around the patient's chest. using neural networks, statistical classifiers, expert systems or fuzzy systemsĪ lung sound diagnostic system for use in collecting, organizing and analyzing lung sounds associated with the inspiration(s) and expiration(s) of a patient. A61B5/7264- Classification of physiological signals or data, e.g.A61B5/7235- Details of waveform analysis.A61B5/72- Signal processing specially adapted for physiological signals or for diagnostic purposes.A61B7/003- Detecting lung or respiration noise.sensing internal probe position employing impedance electrodes on the surface of the body A61B5/061- Determining position of a probe within the body employing means separate from the probe, e.g.A61B5/06- Devices, other than using radiation, for detecting or locating foreign bodies determining position of probes within or on the body of the patient.A61B5/00- Measuring for diagnostic purposes Identification of persons.A61B- DIAGNOSIS SURGERY IDENTIFICATION.A61- MEDICAL OR VETERINARY SCIENCE HYGIENE.Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Priority to US09/172,343 priority Critical patent/US6139505A/en Priority to US09/699,546 priority patent/US6394967B1/en Application granted granted Critical Publication of US6139505A publication Critical patent/US6139505A/en Priority to US10/080,209 priority patent/US6790183B2/en Priority to US10/884,398 priority patent/US7520861B2/en Assigned to STETHOGRAPHICS, INC. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Murphy Raymond L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Murphy Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US09/172,343 Inventor Raymond L.
#Sibilant rhonchi lung sounds pdf
Google Patents Method and apparatus for displaying lung sounds and performing diagnosis based on lung sound analysisĭownload PDF Info Publication number US6139505A US6139505A US09/172,343 US17234398A US6139505A US 6139505 A US6139505 A US 6139505A US 17234398 A US17234398 A US 17234398A US 6139505 A US6139505 A US 6139505A Authority US United States Prior art keywords lung lung sound inspiration display diagnostic system Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US6139505A - Method and apparatus for displaying lung sounds and performing diagnosis based on lung sound analysis US6139505A - Method and apparatus for displaying lung sounds and performing diagnosis based on lung sound analysis
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