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US 8,571,658 B2Granted
Synchronization control system
AssigneeSunshine Heart Company Pty Ltd
InventorsWilliam Suttle Peters, Rodney G. Parkin
Life of this patent
Estimating the term…
Abstract
A method of controlling the operation of a pulsatile heart assist device (14) in a patient (10). The method consisting of utilizing sounds produced by the heart (12) to control the operation of the heart assist device (14).
Claims18
A heart assist system, comprising:
- (a) a heart assist device comprising an inflatable cuff configured to apply pressure to blood in a blood vessel;
- (b) a pump configured to generate fluid pressure;
- (c) a fluid disposed within the inflatable cuff and the pump, the fluid configured to transfer the fluid pressure between the pump and the inflatable cuff;
- (d) a controller operably coupled to the pump;
- (e) a phonocardiographic (“PCG ”) lead operably coupled to the controller, the PCG lead comprising a sound sensor configured to detect heart sounds, wherein at least a portion of the sound sensor is positioned in contact with the fluid;
- and
- (f) an electrical sensing lead operably coupled to the controller, the electrical sensing lead comprising an electrical sensor configured to detect an R-wave of the heart,
- wherein the controller is configured to use the heart sounds and the R wave of the heart to control the operation of the heart assist device.
5 more elements
A heart assist system, comprising:
- (a) a pump configured to generate fluid pressure;
- (b) an inflatable cuff operably coupled to the pump, the inflatable cuff configured to receive fluid pressure from the pump and apply pressure to blood in a blood vessel;
- (c) a fluid disposed within the inflatable cuff and the pump, the fluid configured to transfer the fluid pressure between the pump and the inflatable cuff;
- (d) a controller operably coupled to the pump;
- (e) a digital signal processor and transmitter (DSPT) operably coupled to the controller, the DSPT comprising an electrocardiogram(“ECG ”) channel and a phonocardiographic (“PCG ”) channel;
- (f) a PCG lead operably coupled to the PCG channel of the DSPT, the PCG lead comprising a sound sensor configured to detect heart sounds wherein at least a portion of the sound sensor is positioned in contact with the fluid;
- and
- (g) an ECG lead operably coupled to the ECG channel of the DSPT, the ECG lead comprising a sensor configured to detect an R-wave of the heart,
- wherein the DSPT is configured to transmit signals relating to the heart sounds and the R-wave of the heart to the controller, and further wherein the controller is configured to transmit actuation instructions to the pump based on the signals relating to the heart sounds and the signals relating to the R-wave from the DSPT.
6 more elements
A method of controlling a heart assist system, the method comprising:
- electrically detecting an R-wave of a heart's rhythm with an electrical sensing lead;
- transmitting a signal relating to the R-wave to a controller;
- positioning a phonocardiographic (“PCG ”) lead such that at least a portion of the PCG lead is positioned in contact with the fluid configured to transfer fluid pressure between a pump and an inflatable cuff;
- detecting a heart sound with the PCG lead;
- transmitting a signal relating to the heart sound to the controller;
- and
- applying pressure to blood in a blood vessel with an inflatable cuff based on the R-wave and the heart sound.
4 more elements
Dependencies are inferred from the claim text.