Implantable pharmacological defibrillator with automatic recognition of ventricular fibrillation
First Claim
1. An automatic self-powered implantable defibrillator with a structure containing a rechargable reservior (13) for a medicament or a solution to be injected and a flexible catheter (4) for injecting the medicament which is connected to the outlet of said reservoir (13) and is inserted into the coronary circulation or through the coronary sinus, characterised by comprising:
- means (3) inserted into a venous-introduced catheher (1) for determining the state of the circulation;
means (6-11) for receiving and interpreting the signal transmitted by said means (3) for determining the state of the circulation, to enable fibrillation to be detected;
means (12) for injecting the medicament from said reservoir (13) via a flexible catheter (4) at a predetermined pressure, and activated by the fibrillation detection means (6-11) on detection of fibrillation, wherein said flexible catheter (4) is provided in proximity to its distal end with a device (29-30) for preventing backward flowing towards the cardiac cavity of the medicament injected towards the coronary cavity, in order to achieve an artificial circulation within the coronary district.
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Accused Products
Abstract
The invention provides an automatic implantable defibrillator with the following essential characteristics: a) reliable recognition of a ventricular fibrillation state by noting mechanical ventricular systole noise and taking action if absent; b) effecting defibrillation not by electrical pulses fed to the heart but by a bolus of medicaments (or solutions under particular physical conditions, such as a cold bolus at 30° C.) fed by a hydraulic system into the coronary sinus by a retrograde path to obtain an artificial circulation so as to rapidly pervade the coronary circuit. The symbol A.I.Ph.D. (Automatic Implantable Pharmacological Defibrillator) is proposed (D.A.I.F., Defibrillatore Automatico Impiantabile Farmacologico, in Italian).
230 Citations
16 Claims
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1. An automatic self-powered implantable defibrillator with a structure containing a rechargable reservior (13) for a medicament or a solution to be injected and a flexible catheter (4) for injecting the medicament which is connected to the outlet of said reservoir (13) and is inserted into the coronary circulation or through the coronary sinus, characterised by comprising:
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means (3) inserted into a venous-introduced catheher (1) for determining the state of the circulation; means (6-11) for receiving and interpreting the signal transmitted by said means (3) for determining the state of the circulation, to enable fibrillation to be detected; means (12) for injecting the medicament from said reservoir (13) via a flexible catheter (4) at a predetermined pressure, and activated by the fibrillation detection means (6-11) on detection of fibrillation, wherein said flexible catheter (4) is provided in proximity to its distal end with a device (29-30) for preventing backward flowing towards the cardiac cavity of the medicament injected towards the coronary cavity, in order to achieve an artificial circulation within the coronary district. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification