System and method for deriving hemodynamic signals from a cardia

Details System and method for deriving hemodynamic signals from a cardia System and method for deriving hemodynamic signals from a cardia

Filed on

1997-10-01

Date issued

1999-12-28

Examiner

O'Connor, Cary

Patent Class

Surgery: light, thermal, and electrical application

SubClass

Light, thermal, and electrical application

SubSubClass

Electrical therapeutic systems

Other Related Categories

607 19, 128897, 128898, A61N 500

Type

Patent

Status

active

Patent number

060093498

Description

ABSTRACT:
A processing system and method are provided for deriving an improved hemodynamic indicator from cardiac wall acceleration signals. The cardiac wall acceleration signals are provided by a cardiac wall motion sensor that responds to cardiac mechanical activity. The cardiac wall acceleration signals are integrated over time to derive cardiac wall velocity signals, which are further integrated over time to derive cardiac wall displacement signals. The cardiac wall displacement signals correlate to known hemodynamic indicators, and are shown to be strongly suggestive of hemodynamic performance. An implantable cardiac stimulating device which uses cardiac wall displacement signals to detect and discriminate cardiac arrhythmias is also provided.

REFERENCES:
patent: 3815611 (1974-06-01), Denniston, III
patent: 4140132 (1979-02-01), Dahl
patent: 4428378 (1984-01-01), Anderson et al.
patent: 4708143 (1987-11-01), Schroeppel
patent: 4774950 (1988-10-01), Cohen
patent: 4802481 (1989-02-01), Schroeppel
patent: 4967748 (1990-11-01), Cohen
patent: 5014700 (1991-05-01), Alt
patent: 5031615 (1991-07-01), Alt
patent: 5040534 (1991-08-01), Mann et al.
patent: 5040535 (1991-08-01), Mann et al.
patent: 5044366 (1991-09-01), Alt
patent: 5156148 (1992-10-01), Cohen
patent: 5330505 (1994-07-01), Cohen
patent: 5387229 (1995-02-01), Poore
patent: 5425750 (1995-06-01), Moberg
patent: 5454838 (1995-10-01), Vallana et al.
Bacharach, David W. et al., "Activity-Based Pacing: Comparison of a Device Using an Accelerometer Versus a Piezoelectric Crystal," PACE, vol. 15, pp. 188-196 (Feb. 1992).
Ovsyshcher, Ilya et al., "First Derivative of Right Ventricular Pressure, dP/dt, as a Sensor for a Rate Adaptive VVI Pacemaker: Initial Experience," PACE, vol. 15, pp. 211-218 (Feb. 1992).
Salerno, David M. et al., "Seismocardiography: A New Technique for REcording Cardiac Vibrations., Concept, Method, and Initial Observations," Journal of Cardiovascular Technology, vol. 9, No. 2, 1990, pp. 111-118.
Salerno, David M. M.D., Ph.D et al., "Seismocardiography for Monitoring Changes in Left Ventricular Function during Ischemia," Chest/100/4/Oct. 1991.
Salerno, David M. M.D., Ph.D et al., "Seismocardiographic Changes Associated with Obstruction of Coronary Blood Flow During Balloon Angioplasty," The American Journal of Cardiology, vol. 68, pp. 201-207 (Jul. 15, 1991).
Sandler, H. et al., "Miniature Implantable Accelerometers," pp. 165-174.
Piezo Electric Products, Inc., "Piezoceramic Design Notes," Sensors (6 pp) (Mar. 1984).
Atochem Sensors, Inc., "Kynar Piezo Film," Standard and Custom Piezo Film Components, pp. 1-12.

Affiliated with

Also associated with

Rating

System and method for deriving hemodynamic signals from a cardia does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for deriving hemodynamic signals from a cardia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for deriving hemodynamic signals from a cardia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2389272