Process and implantable device for the intrapulmonary assessing of density dependant physical properties of the lung tissue
First Claim
1. ) implantable device for the measurement of the physical properties of the pulmonary tissue depending from its density, characterised by comprising:
- At least an intrapulmonary catheter (2) suitable to be inserted in a branch of the pulmonary artery;
At least a sensor of density dependent physical properties of the pulmonary tissue, located at least inside said intrapulmonary catheter;
Means for assessing the density dependent physical properties of the portion of pulmonary tissue explored by said intrapulmonary catheter provided with sensors (2);
Means for processing the measure of the physical properties of the pulmonary tissue depending from its density and their variations, for diagnostic and/or therapeutic purposes, said measurement and elaboration means being placed inside an implantable container (1), to which is connected said catheter provided with sensors (2) and which contains the suitable means for the electric feeding.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to an implantable device for therapeutic and diagnostic purposes, which is capable to detect the physical properties of the pulmonary tissue which depend from its density and their variations caused by a pathologic condition of the heart (heart failure, ischemia, arrhythmia), using one or more intrapulmonary catheters, provided with sensors, inserted in branches of the pulmonary artery. The catheters provided with sensors preferably use as sensors electrodes and the detected physical property, which depends by the density of the pulmonary tissue, is preferably the bioelectric impedance of the explored portion of lung. The same electrodes can be also used for monitoring of an electrocardiogram, without artefacts and interferences. The device can be used to guide and optimise the therapy of the heart disease made with electrostimulators and/or cardiac defibrillator and/or systems for the exhibition of drugs and/or for the drainage of the fluids accumulated in the body and/or for the circulatory assistance to the heart. The device comprises means for the communication with external devices by means of radio-frequency transmission. This invention constitutes a significative improvement in the state of the art of the implantable devices for the therapy and the diagnosis of the heart diseases, because it allows the measurement of the specific bioelectric impedance of the pulmonary tissue only, overcoming the drawbacks of the known systems, which by using surfaces electrodes placed upon the skin or electrodes placed inside of the heart cavities, give a measurement of the transthoracic impedance determined prevalently by the volume variations of the heart and great vessels and only partially of the contents of fluids in the pulmonary tissue.
-
Citations
51 Claims
-
1. ) implantable device for the measurement of the physical properties of the pulmonary tissue depending from its density, characterised by comprising:
-
At least an intrapulmonary catheter (2) suitable to be inserted in a branch of the pulmonary artery;
At least a sensor of density dependent physical properties of the pulmonary tissue, located at least inside said intrapulmonary catheter;
Means for assessing the density dependent physical properties of the portion of pulmonary tissue explored by said intrapulmonary catheter provided with sensors (2);
Means for processing the measure of the physical properties of the pulmonary tissue depending from its density and their variations, for diagnostic and/or therapeutic purposes, said measurement and elaboration means being placed inside an implantable container (1), to which is connected said catheter provided with sensors (2) and which contains the suitable means for the electric feeding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
-
-
49. ) Method to detect the physical properties of the pulmonary tissue depending from its density and their variations, characterised by the sequence of the following operative phases:
-
Insertion through the intravenous way and through the heart, of at least one intrapulmonary catheter with at least a pulmonary density sensor, in a branch of the pulmonary artery, to reach the lung, and subcutaneous insertion of the container which contains the several feeding and processing means and to which said intrapulmonary catheter provided with sensors is connected;
Control and programming of the implanted device by means of external means which can be connected by telemetric way with the same implanted device;
Detection, by means of said intrapulmonary catheter provided with sensors, of the variations of the physical properties of the pulmonary tissue which are depending by its density, and utilisation of the results of the observation for diagnostic and/or therapeutic purposes. - View Dependent Claims (50, 51)
-
Specification