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Medical Device With Intra-Conductor Capacitive Energy Storage

a capacitive energy storage and medical device technology, applied in the field of implantable medical devices, can solve the problem of relatively large amount of energy required

Inactive Publication Date: 2007-06-07
KENERGY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution enables effective energy storage and release for cardiac stimulation, addressing the energy efficiency challenges faced by existing devices, particularly in defibrillation applications.

Problems solved by technology

The amount of energy required may be relatively great, especially when the medical device is an implantable defibrillator.

Method used

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  • Medical Device With Intra-Conductor Capacitive Energy Storage
  • Medical Device With Intra-Conductor Capacitive Energy Storage
  • Medical Device With Intra-Conductor Capacitive Energy Storage

Examples

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Embodiment Construction

[0028] Although the novel energy storage mechanism for an implantable medical device is being described in the context of a cardiac pacing apparatus, it should be understood that the inventive concepts can be used in other types of apparatus.

[0029] With initial reference to FIG. 1, a medical device 10 electrically stimulates an animal's heart 12 to contract or to convert from fibrillation to a normal rhythm. That medical device comprises an external power source 14 and a stimulator 20 that is implanted in a blood vessel 18 of a muscle in the heart. As will be described in greater detail, the power source 14 transmits a radio frequency signal 16 which causes the stimulator 20 to emit an electric current that stimulates the heart muscle.

[0030] Referring to FIG. 2, the power source 14, that preferably is worn outside the animal's body adjacent the chest, in the illustrated embodiment comprises a conventional pacing signal generator 22 connected to cardiac activity sensing electrodes ...

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Abstract

A medical device, such as for electrical stimulation, includes an electronic circuit that is implantable at a first location in an animal. The electronic circuit has an element for receiving a wireless signal and a power supply that converts electrical energy from that signal into a supply voltage for powering the medical device. An electrical lead, that extends from the electronic circuit through the animal, has a first conductor, a second conductor, and a plurality of capacitors connected between those conductors to store the supply voltage. An electrode is implanted in the animal and is connected to the electronic circuit by a third conductor. In one embodiment, the third conductor extends through the electrical lead electrically isolated from the capacitors, and in another embodiment, the third conductor is physically separate from the electrical lead.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This is a continuation in part of U.S. patent application Ser. No. 11 / 089,476 filed on Mar. 24, 2005. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Not ApplicableBACKGROUND OF THE INVENTION [0003] 1. Field of the Invention [0004] The present invention relates to implantable medical devices that produce electrical pulses which stimulate organs of an animal, and more particularly to the storage of energy in such medical devices. [0005] 2. Description of the Related Art [0006] A remedy for people with slowed or disrupted natural heart activity involves implanting a cardiac pacing device which is a small electronic apparatus that stimulates the heart to beat at regular rates. [0007] Typically the pacing device is implanted in the animal's chest and has sensor electrodes that detect electrical impulses associated with in the heart contractions. These sensed impulses are analyzed to determine when abnormal cardiac act...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61N1/378
CPCA61N1/375A61N1/3787Y10S128/903A61N1/37512A61N1/37516
Inventor BULKES, CHERIK
Owner KENERGY INC
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