46 results about "Premature heart beat" patented technology

A process for preventing atrial premature contractions originating within a pulmonary vein from being conducted into the left atrium of a human heart. More specifically, an ablation lesion is formed which electrically isolates the located source of the atrial premature contraction in the pulmonary vein from connection with the left atrium and blocks passage of the atrial premature contraction originating from the located source. In one embodiment, the steps of the process include advancing a medical device into the left atrium of a human heart, introducing the advanced medical device into the pulmonary vein from the left atrium of a human heart, sensing electrical activity within the pulmonary vein using the introduced medical device, locating a source of the atrial premature contraction within the pulmonary vein using the sensed electrical activity, and forming an ablation lesion in tissue of the pulmonary vein at a location proximal from the located source of the atrial premature contraction within the pulmonary vein. Conductive media and various medical devices may be used with the process.

A system and method for automatically detecting abnormal heart contractions originating in the ventricles, in a way that is independent of signal morphology is provided. As an uninterrupted series of ventricular detections indicates a possible ventricular arrhythmia, all ventricular beats are detected including isolated premature ventricular contractions (PVCs) and the associated R-R intervals are corrected. Premature ventricular contractions (ectopic beats) in non-standard lead configuration in a noisy signal from an ambulatory subject from a low-cost sensor that may be a small form factor sensor with 1 inch lead separation and may be rotated through multiple placements to correct an R-R interval time series used to detect atrial fibrillation.

The present invention provides one medicine composition for treating coronary heat disease ventricular premature beat based on the Chinese medicine theory of benefiting vital energy, nourishing Yin, promoting blood circulation, dredging meridian, clearing away heat-evil in the pericardium and tranquilizing. The medicine composition has 12 kinds of Chinese medicinal materials including ginseng, ophiopogon root, dogwood, red sage, common jujube seed, etc. The pharmacological test shows that the composite medicine capsule has obvious effect of preventing mouse's arrhythmia caused by CaCl2 and decreasing the sustained time of rat's arrhythmia caused by aconitine.

An embodiment of the invention provides a ventricular / supraventricular premature heart beat detection method and a system thereof, and the method comprises that electrocardiogram signals to be detected are obtained and pre-processed; an RR interval corresponded to each heart beat of pre-processed electrocardiogram signals is extracted; the heart beat corresponded to the RR interval of fixed percentage that is smaller than the RR interval of basic heart beat is marked as premature heart beat; if a QRS main peak of the premature heart beat is in the same direction with the basic heart beat QRS main peak, begging from a peak point of each of the QRS main peaks, amplitude differences of the premature heart beat QRS main peak and the basic heart beat QRS main peak between heat beat amplitudes from each peak point thereof to a time point of a fixed time interval corresponded to the peak values thereof; and each of the premature heartbeat is judged to be ventricular / supraventricular heart beat or not according to the amplitude difference corresponded to each of the premature beat QRS main peak and basic beat QRS main peak. According to the invention, ventricular / supraventricular hear beats of dynamic electrocardiogram are detected.

Implantable systems, and methods for use therein, perform at least one of a cardiac assessment and an autonomic assessment. Short-term fluctuations in PR intervals, that follow the premature contractions in the ventricles, are monitored. At least one of a cardiac assessment and an autonomic assessment is performed based on the monitored fluctuations in PR intervals that follow the premature contractions in the ventricles. This can include assessing a patient's risk of sudden cardiac death (SCD), assessing a patient's autonomic tone and / or detecting myocardial ischemic events based on the monitored fluctuations in PR intervals that follow the premature contractions in the ventricles.

The preparation method of the total alkaloid salt of Corydalis Corydalis and its application as a medicine for treating cardiovascular diseases. The invention relates to a preparation method of a traditional Chinese medicine alkaloid salt and its application. The invention solves the problem that the total alkaloids of Corydalis Corydalis has poor water solubility and low bioavailability, and thus has poor therapeutic effect on cardiovascular diseases. The preparation method of the total alkaloid salt of Corydalis is as follows: the crude powder of Corydalis is extracted and purified to obtain the total alkaloids of Corydalis, and then the total alkaloids of Corydalis is obtained through salt-forming reaction with acid. The extraction rate of the total alkaloids of Corydalis of the present invention is more than 0.5%, the purity of the total alkaloids of Corydalis obtained is more than 50%, the total alkaloids of Corydalis salt is good in solubility, the solubility is more than 60%, and the bioavailability is high. The active ingredient of disease medicine, used in the treatment of coronary heart disease, angina pectoris, arrhythmia and premature beats.

The invention belongs to the technical field of traditional Chinese medicine and relates to a Chinese medicine preparation for treating premature beat. The preparation is prepared from Chinese medicinal herbs. The preparation comprises the following components in portion by weight: 10 portions of rhizoma coptidis, 20 portions of Pinellia ternate, 10 portions of dried orange peel, 20 portions of poria, 15 portions of Radix scutellariae, 30 portions of jujube kernel, 20 portions of thinleaf milkwort root-bark, 30 portions of rhizoma acori tatarinowii, 30 portions of radix salviae miltiorrhizae,20 portions of platycladi seed, 20 portions of Curcuma aromatica Salisb, 30 portions of Chinese magnoliavine fruit and 20 portions of dwarf lilyturf tuber. The Chinese medicine is prepared as follows: the components are ground and passed through an 80 to 100 mesh sieve; the medical powder is stirred with boiled water into pellets; the pellets are sun dried, or dried at a low temperature, and filled into bags to obtain finished products to be packed and sealed in boxes. The Chinese medicine preparation can treat premature beat with quick results, short treatment period and high cure rate, and avoid bitterness and coldness hurting qi-yin, as well as relapse and toxic side effects.