Implantable medical device with a reduced volumetric configuration and improved shock stabilization
First Claim
1. An implantable cardiac stimulation device having internal components optimally configured to reduce the overall volumetric displacement of the device comprising:
- a container defining an interior region for holding an assembly of electronic components, the electronic components operating to deliver an electric shock to a patient in response to a cardiac arrhythmia, the assembly of electronic components comprising;
a voltage discharge module generating a high-voltage electric charge for delivering the electric shock to the patient, the voltage discharge module having an electrical substrate formed with an aperture therethrough;
a battery connected to the voltage discharge module for supplying electrical energy to generate the high-voltage electric charge; and
a cardiac discharge capacitor assembly connected to the voltage discharge module for temporarily storing the high-voltage electric charge, the cardiac discharge capacitor assembly having an electrical connector lead directly inserted through the substrate aperture for establishing electrical communication with the voltage discharge module and achieving a reduced volumetric configuration for the stimulation device; and
adhesive tape means for joining the voltage discharge module, the battery, and the capacitor assembly into a single, rigid assembly, thereby stabilizing the assembly against shock movement within the housing.
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Accused Products
Abstract
A cardiac stimulation device having a reduced volumetric configuration contains a pair of high-voltage cylindrical discharge capacitors positioned at rounded edges within a device container. The capacitors have electrical contact tabs at one end which are inserted directly through apertures formed within an associated electronic module. The capacitor tabs are connected directly to the electronic module eliminating the need for secondary connectors or point to point wiring, thus reducing the number of connections. Direct connection of the capacitors to the electronic module allows for optimal positioning of the module within the container. Specifically, the generally planar module is oriented perpendicular to planar cover surfaces of the container. Irregularly shaped components attached to the surface of the module advantageously extend away from the surface into remaining voids within the container. Adhesive compressible foam is placed around and between the internal components of the stimulation device to stabilize the device against shock and vibration.
131 Citations
34 Claims
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1. An implantable cardiac stimulation device having internal components optimally configured to reduce the overall volumetric displacement of the device comprising:
a container defining an interior region for holding an assembly of electronic components, the electronic components operating to deliver an electric shock to a patient in response to a cardiac arrhythmia, the assembly of electronic components comprising; a voltage discharge module generating a high-voltage electric charge for delivering the electric shock to the patient, the voltage discharge module having an electrical substrate formed with an aperture therethrough; a battery connected to the voltage discharge module for supplying electrical energy to generate the high-voltage electric charge; and a cardiac discharge capacitor assembly connected to the voltage discharge module for temporarily storing the high-voltage electric charge, the cardiac discharge capacitor assembly having an electrical connector lead directly inserted through the substrate aperture for establishing electrical communication with the voltage discharge module and achieving a reduced volumetric configuration for the stimulation device; and adhesive tape means for joining the voltage discharge module, the battery, and the capacitor assembly into a single, rigid assembly, thereby stabilizing the assembly against shock movement within the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An implantable cardioverter-defibrillator comprising:
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a container constructed of a biocompatible material for subcutaneous positioning within a human patient; electronic circuit means disposed within an interior region of the container for monitoring the cardiac activity of a patient and delivering a high voltage charge to the patient in response to a cardiac arrhythmia; a battery within the interior region of the container for supplying electrical energy to the electronic circuit means; and energy storage means disposed within the interior region of the container for storing the high voltage electrical charge, the energy storage means comprising electrical connection means for transferring the high voltage charge to the electronic circuit means; compressible tape adhesive means for protecting the energy storage means and the electronic circuit means against shock and vibration; and wherein the electronic circuit means is formed with at least one aperture for receiving the electrical connection means of the energy storage means. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An implantable cardioverter-defibrillator having a reduced volumetric displacement comprising:
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a container constructed of a biocompatible material for subcutaneous positioning within a human patient, the container formed with substantially planar top and bottom surfaces merging at a rounded periphery; a battery housed at a substantially central region within the container for providing electrical power to the cardioverter-defibrillator; first energy storage means housed within the container for storing a high voltage electric charge, the first energy storage means in electrical communication with the battery and positioned at a first edge of the rounded periphery; second energy storage means housed within the container for storing a high voltage electric charge, the second energy storage means in electrical communication with the battery and positioned at a second edge of the rounded periphery opposite the first edge; electronic circuit means housed within the container for monitoring and regulating cardiac activity of the patient, the electronic circuit means attached to the first and second energy storage means for delivering the high voltage electric charge to the patient in response to a cardiac arrhythmia; wherein the electronic circuit means comprises (1) a first circuit module having a first substantially planar substrate and individual circuit components mounted thereon, the first planar substrate positioned perpendicular to the planar top and bottom surfaces of the container at a third edge of the rounded periphery, and (2) a second circuit module having a second substantially planar substrate for mounting electrical components thereto, the second planar substrate of the second circuit module positioned perpendicular to the planar top and bottom surfaces of the container at a fourth edge of the rounded periphery; compressible tape adhesive means for protecting the electronic circuit means and the first and second energy storage means against shock and vibration. - View Dependent Claims (16, 17, 18, 19)
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20. An implantable cardiac stimulation device for subcutaneous positioning within a human patient comprising:
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a container defining an interior region for housing electrical components of the stimulation device; a battery housed within the container for providing electrical power to the stimulation device; energy storage means housed within the container for storing an electric charge received from the battery; electronic circuit means housed within the container for monitoring and regulating cardiac activity of the patient, the electronic circuit means connected to the battery and energy storage means and delivering electric pulses to the patient in response to detected cardiac activity of the patient; and compressible tape support means positioned within the container for providing stabilization of the energy storage means and electronic circuit means in response to movement of the cardiac stimulation device, the compressible tape support means positioned between the electronic circuit means and the energy storage means, and the compressible support means positioned between the energy storage means and an interior surface of the container. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A method of constructing an implantable cardioverter-defibrillator to achieve a reduced volumetric displacement wherein the cardioverter-defibrillator comprises a container having substantially planar top and bottom covering surfaces for housing a battery, a cylindrical charge capacitor having electrical contact tabs, and an electronic module having a substantially planar substrate surface, all for delivering a high-voltage charge to a patient, the method of constructing comprising the following steps:
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forming at least one opening within the electronic module for receiving at least one of the electrical contact tabs of the charge capacitor; inserting the at least one electrical contact tab into the at least one opening formed within the electronic module; securing the at least one electrical contact tab to the electronic module to establish electrical connection between the electronic module and the charge capacitor; placing the charge capacitor and electronic module combination within the container so that the longitudinal axis of the capacitor is parallel to the planar top and bottom surfaces of the container and so that the planar substrate surface of the electronic module is perpendicular to the planar top and bottom surfaces of the container; attaching a first piece of compressible tape adhesive material to the electronic module wherein the first piece of adhesive material is secured between the electronic module and the charge capacitor to damp movement of the charge capacitor relative to movement of the electronic module; and attaching a second piece of compressible tape adhesive material to the charge capacitor wherein the second piece of adhesive material as secured between the charge capacitor and an interior surface of the container to damp movement of the charge capacitor relative to movement of the container. - View Dependent Claims (27, 28, 29)
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30. A method of constructing an implantable cardiac stimulation device to achieve a high degree of stabilization and protection from shock and vibration wherein the cardiac stimulation device comprises a container for housing a battery, a capacitor placed within the container for discharging an electrical stimulus delivered to a host patient, and an electrical control module connected to the capacitor and to the battery for monitoring the cardiac activity of a patient and delivering the electrical stimulus in response to irregular cardiac activity of the patient, the method of constructing comprising the following steps:
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securing a first section of compressible adhesive tape between the electrical control module and the capacitor to damp movement of the capacitor relative to the electrical control module; securing a second section of compressible adhesive tape between the capacitor and an interior surface of the container to damp movement of the capacitor relative to the container; and securing a third section of compressible adhesive tape between the capacitor and the battery to damp movement of the capacitor relative to the battery. - View Dependent Claims (31, 32)
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33. An implantable cardiac stimulation device having internal components optimally configured to reduce the overall volumetric displacement of the device comprising:
a hermetically-sealed, physiologically-shaped housing for holding a single, rigid sub-assembly of electronic components, the electronic components including means for delivering an electric shock to a patient in response to a cardiac arrhythmia, the rigid sub-assembly of electronic components comprising; a non-hermetic electronic module generating a high-voltage electric charge for delivering the electric shock to the patient, the electronic module having an electrical substrate formed with apertures therethrough; a pair of capacitors, connected to the electronic module, for temporarily storing the high-voltage electric charge, each capacitor having terminals which are directly inserted through the substrate apertures for establishing electrical communication with the electronic module; a battery, electrically connected to the electronic module, located at a substantially central region between the pair of capacitors for supplying electrical energy to generate the high-voltage electric charge; and adhesive means for joining the non-hermetic electronic tape module, the battery, and the pair of capacitors into a single, rigid sub-assembly, thereby stabilizing the sub-assembly against shock movement within the housing and achieving a reduced volumetric configuration for the stimulation device. - View Dependent Claims (34)
Specification