Prophylactic implantable cardioverter-defibrillator
First Claim
1. A prophylactic implantable cardioverter defibrillator device for subcutaneous positioning within a pectoral region of a human patient capable of internally storing sufficient electrical energy so as to effectively treat a mildly impaired cardiac dysrhythmia condition comprising:
- a sealed housing structure, having at least two walls defining an interior space therebetween the at least two walls, constructed of a biocompatible material and having a displacement volume of less than about 75 cc and including one or more connector ports disposed in a wall of said structure for providing electrical connections between said interior space of said structure and electrode leads in said patient;
circuit means, within said interior space, including;
means for sensing cardiac signals received from said electrode leads;
means for detecting and confirming a dysrhythmia in said cardiac signals; and
means for controlling delivery of one or more electrical cardioversion/defibrillation countershocks of at least 0.5 Joules to said patient in response to the detection of a dysrhythmia;
capacitor means within said interior space for storing electrical energy to generate said electrical cardioversion/defibrillation countershocks and having an effective capacitance of less than about 100 μ
F; and
battery means within said interior space for providing electrical energy to said circuit means and said capacitor means and capable of charging said capacitor means to a maximum stored electrical charge energy of less than about 27 Joules,wherein a total amount of electrical energy stored by said battery means is less than about 12,000 Joules and a budgeted number of electrical cardioversion/defibrillation countershocks is greater than about 100 and less than about 200.
4 Assignments
0 Petitions
Accused Products
Abstract
A practical and effective prophylactic implantable cardioverter defibrillator (ICD) that has the potential to benefit a large number of patients with less severe cardiac conditions who now lack the opportunity to be served in a practical way by existing ICD systems. Unlike existing ICD systems, the prophylactic ICD is designed to deliver between about 100 to 200 shocks, with each shock having a maximum delivered energy value of only about 25 joules. As a result, the initial stored energy requirements of the prophylactic ICD system are less than about 12,000 joules, and both the battery and the capacitor systems can be significantly smaller than existing ICD system. The smaller battery and capacitor systems produce in an implantable device having a physical size small enough to permit implantation of the device in the pectoral region. By using the particular ranges of number of shocks and maximum energy value for each shock to design the ICD system, the result is a practical prophylactic ICD system that will provide effective prophylactic therapy for prospective cardiac incidents in patients with less severe cardiac conditions.
-
Citations
24 Claims
-
1. A prophylactic implantable cardioverter defibrillator device for subcutaneous positioning within a pectoral region of a human patient capable of internally storing sufficient electrical energy so as to effectively treat a mildly impaired cardiac dysrhythmia condition comprising:
-
a sealed housing structure, having at least two walls defining an interior space therebetween the at least two walls, constructed of a biocompatible material and having a displacement volume of less than about 75 cc and including one or more connector ports disposed in a wall of said structure for providing electrical connections between said interior space of said structure and electrode leads in said patient; circuit means, within said interior space, including; means for sensing cardiac signals received from said electrode leads; means for detecting and confirming a dysrhythmia in said cardiac signals; and means for controlling delivery of one or more electrical cardioversion/defibrillation countershocks of at least 0.5 Joules to said patient in response to the detection of a dysrhythmia; capacitor means within said interior space for storing electrical energy to generate said electrical cardioversion/defibrillation countershocks and having an effective capacitance of less than about 100 μ
F; andbattery means within said interior space for providing electrical energy to said circuit means and said capacitor means and capable of charging said capacitor means to a maximum stored electrical charge energy of less than about 27 Joules, wherein a total amount of electrical energy stored by said battery means is less than about 12,000 Joules and a budgeted number of electrical cardioversion/defibrillation countershocks is greater than about 100 and less than about 200. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A prophylactic implantable cardioverter defibrillator device for subcutaneous positioning within a pectoral region of a human patient capable of internally storing sufficient electrical energy so as to effectively treat mildly impaired cardiac dysrhythmia conditions comprising:
-
a sealed housing structure, having at least two walls defining an interior space there between the at least two walls, constructed of a biocompatible material and having a displacement volume of less than about cc and including one or more connector ports disposed in a wall of said structure for providing electrical connections between said interior space of said structure and electrode leads in said patient; circuit means, within said interior space, including; means for sensing cardiac signals received from said electrode leads; means for detecting and confirming a dysrhythmia in said cardiac signals; and means for controlling delivery of one or more electrical cardioversion/defibrillation countershocks of at least 0.5 Joules to said patient in response to the detection of a dysrhythmia; capacitor means within said interior space for storing electrical energy to generate said electrical cardioversion/defibrillation countershocks and having an effective capacitance of less than about 100 μ
F; andbattery means within said interior space for providing electrical energy to said circuit means and said capacitor means and capable of charging said capacitor means to a maximum stored electrical charge energy of less than about 21 Joules, wherein an amount of electrical energy stored by said battery means to provide said electrical cardioversion/defibrillation countershocks is less than about 7500 Joules and a budgeted number of electrical cardioversion/defibrillation countershocks is greater than about 100 and less than about 200. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A prophylactic implantable cardioverter defibrillator device for subcutaneous positioning within a pectoral region of a human patient capable of internally storing sufficient electrical energy so as to effectively treat mildly impaired cardiac dysrhythmia conditions comprising:
-
a sealed housing structure, having at least two walls defining an interior space the at least two walls, constructed of a biocompatible material and having a displacement volume of less than about 60 cc and including one or more connector ports disposed in a wall of said structure for providing electrical connections between said interior space of said structure and electrode leads in said patient; circuit means, within said interior space, including; means for sensing cardiac signals received from said electrode leads; means for detecting and confirming a dysrhythmia in said cardiac signals; and means for controlling delivery of one or more electrical cardioversion/defibrillation countershocks of at least 0.5 Joules to said patient in response to the detection of a dysrhythmia; capacitor means within said interior space for storing electrical energy to generate said electrical cardioversion/defibrillation countershocks and having an effective capacitance of less than about 100 μ
F; andbattery means within said interior space for providing electrical energy to said circuit means and said capacitor means and capable of charging said capacitor means to a maximum stored electrical charge energy of less than about 21 Joules, wherein a total amount of electrical energy stored by said battery means is less than about 10000 Joules, a budgeted number of electrical cardioversion/defibrillation countershocks is greater than about 100 and less than about 200, and the minimum lifespan of the device is less than about 3 years. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
-
Specification