# US 10,478,124 B2 · Pressure sensor to detect body sounds > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,478,124 B2 - Document ID: US10478124B2 - Status: Granted - Kind: B2 - Application number: 15/654,838 - Filed: 2017-07-20 - Published: 2018-01-25 - Granted: 2019-11-19 - Earliest claimed: 2016-07-20 - Assignees: Cardiac Pacemakers, Inc. - Applicants: Cardiac Pacemakers, Inc. - Inventors: Qi An; Yinghong Yu; Jeffrey E. Stahmann; Pramodsingh Hirasingh Thakur; Michael J. Kane - Web page: https://patentgrep.com/patent/US10478124B2 ## CPC - A61B 5/6843: {Monitoring or controlling sensor contact pressure} - A61B 5/0205: Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition - A61B 5/021: Measuring pressure in heart or blood vessels - A61B 5/0285: Measuring or recording phase velocity of blood waves - A61B 5/686: {Permanently implanted devices, e.g. pacemakers, other stimulators, biochips (A61B5/6861 takes precedence)} - A61B 7/00: Instruments for auscultation - A61B 7/003: {Detecting lung or respiration noise} - A61B 5/02028: {Determining haemodynamic parameters not otherwise provided for, e.g. cardiac contractility or left ventricular ejection fraction} - A61B 7/04: Electric stethoscopes - A61B 2562/0247: Pressure sensors - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract This document discusses, among other things, using a pressure sensor to detect body sound information of a patient, such as cardiac murmurs, respiratory sounds, etc. ## Claims ### Claim 1 A system, comprising: a pressure sensor configured to receive physiologic information from a patient; and a control circuit, coupled to the pressure sensor, configured to receive information from the pressure sensor, and to control a state of the pressure sensor, wherein the control circuit is configured to: detect pressure information from the patient using the physiologic information received by the pressure sensor in a first state; and detect body sound information from the patient using the physiologic information received by the pressure sensor in a second state. ### Claim 2 (depends on 1) The system of claim 1, including a leadless cardiac pacemaker (LCP), wherein the LCP includes the pressure sensor having a deformable element, and wherein the LCP includes first and second electrodes configured to detect electrical information of the heart. ### Claim 3 (depends on 1) The system of claim 1, including a leadless cardiac pacemaker (LCP), wherein the LCP includes first and second electrodes configured to detect electrical information of the heart. ### Claim 4 (depends on 3) The system of claim 3, wherein the control circuit is configured to control the state of the pressure sensor using the detected electrical information. ### Claim 5 (depends on 1) The system of claim 1, wherein the control circuit is configured to control the state of the pressure sensor using the received physiologic information from the pressure sensor. ### Claim 6 (depends on 5) The system of claim 5, wherein the control circuit is configured to detect diastole in the patient using information from the pressure sensor, and wherein the control circuit is configured to control the state of the pressure sensor using the detected diastole. ### Claim 7 (depends on 5) The system of claim 5, wherein the control circuit is configured to place the pressure sensor in the second state when the information from the pressure sensor is below a threshold. ### Claim 8 (depends on 1) The system of claim 1, including a secondary physiologic sensor configured to receive secondary physiologic information from the patient, and wherein the control circuit is configured to control the state of the pressure sensor using the secondary physiologic information detected from the secondary physiologic sensor. ### Claim 9 (depends on 8) The system of claim 8, wherein the secondary sensor includes a respiration sensor configured to detect a respiration phase of the patient, and wherein the control circuit is configured to control the pressure sensor using the detected respiration phase. ### Claim 10 (depends on 1) The system of claim 1, wherein the pressure sensor is configured to sample physiologic information from the patient using the pressure sensor at a first sampling rate in the first state, and to sample physiologic information from the patient using the pressure sensor at a second sampling rate higher than the first sampling rate in the second state. ### Claim 11 (depends on 1) The system of claim 1, wherein the body sound information includes information about at least one of a cardiac murmur, a respiratory sound, mitral regurgitation, or mitral stenosis detected using the physiologic information received by the pressure sensor in the second state. ### Claim 12 A method, comprising: controlling a state of a pressure sensor using a control circuit; receiving physiologic information from a patient using the pressure sensor; detecting pressure information from the patient using the physiologic information received by the pressure sensor in a first state using the control circuit; and detecting body sound information from the patient using the physiologic information received by the pressure sensor in a second state using a the control circuit. ### Claim 13 (depends on 12) The method of claim 12, including: detecting electrical information of the patient using first and second electrodes, wherein the pressure sensor includes a deformable element, and wherein the receiving physiologic information from the patient includes receiving physiologic information from within a left ventricle of a heart of the patient. ### Claim 14 (depends on 13) The method of claim 13, wherein the controlling the state of the pressure sensor includes using the detected electrical information. ### Claim 15 (depends on 12) The method of claim 12, wherein the controlling the state of the pressure sensor includes using the received physiologic information from the pressure sensor. ### Claim 16 (depends on 15) The method of claim 15, including: detecting diastole in the patient using information from the pressure sensor, wherein the controlling the state of the pressure sensor includes using the detected diastole. ### Claim 17 (depends on 12) The method of claim 12, including: receiving secondary physiologic information from the patient using a secondary physiologic sensor, wherein the controlling the state of the pressure sensor includes using the secondary physiologic information detected from the secondary physiologic sensor. ### Claim 18 (depends on 17) The method of claim 17, wherein the receiving secondary physiologic information includes: receiving a respiratory phase of the patient from a respiration sensor, wherein controlling the state of the pressure sensor includes using the detected respiration phase. ### Claim 19 (depends on 12) The method of claim 12, including: sampling physiologic information from the patient using the pressure sensor at a first sample rate in the first state; and sampling physiologic information from the patient using the pressure sensor at a second sampling rate higher than the first sampling rate in the second state. ### Claim 20 (depends on 12) The method of claim 12, wherein the detecting body sound information includes detecting information about at least one of a cardiac murmur, a respiratory sound, mitral regurgitation, or mitral stenosis detected using the physiologic information received by the pressure sensor in the second state.