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Magnetic shielding aimd housing equipped with window for magnetic actuation type switch

A technology of magnetic shielding and casing, applied in magnetic field/electric field shielding, cables with double-stranded/quad-stranded, artificial respiration, etc., can solve problems such as undisclosed continuous metal electromagnetic shielding

Inactive Publication Date: 2007-02-07
GREATBATCH SIERRA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, U.S. Patent No. 6,765,144 does not disclose continuous metal electromagnetic shielding as part of its assembly

Method used

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  • Magnetic shielding aimd housing equipped with window for magnetic actuation type switch
  • Magnetic shielding aimd housing equipped with window for magnetic actuation type switch
  • Magnetic shielding aimd housing equipped with window for magnetic actuation type switch

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] The present invention is directed to active implantable medical devices (AIMDs) such as cardiac pacemakers, implantable defibrillators, congestive heart failure devices, auditory implants, cochlear implants, neurostimulators, drug pumps, Ventricular assist devices, insulin syringes, spinal cord stimulators, implantable sensory systems, deep brain stimulators, artificial hearts, incontinence devices, vagus nerve stimulators, bone growth stimulators, gastric pacemakers or prosthetic devices. The housings of these AIMDs are composed of materials and / or have coatings that provide electromagnetic shielding to internal components in the AIMD. In addition, the enclosure includes unshielded areas or windows that, through partial magnetic shielding, allow passage of magnetic fields to actuate reed switches, Hall effect devices, embedded telemetry coils, low frequency telemetry coils, Close-coupled subcutaneous battery recharging circuits or other magnetic starting devices.

[002...

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PUM

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Abstract

An active implantable medical device (AIMD) having a magnetic shield on its housing for shielding the interior of the device from magnetic fields generated outside the housing. Magnetic shielding is created using a magnetically absorbing coating on the inner surface of the housing. The AIMD includes the remaining enclosure area without magnetic shielding, ie the magnetic window, adjacent to the magnetic actuating device located within the enclosure. This magnetic window allows actuation of the magnetic starting device.

Description

technical field [0001] The present invention generally relates to active implantable medical devices (AIMD) including electromagnetic shielding. More specifically, the present invention relates to housings for AIMDs constructed of materials and / or having coatings that provide electromagnetic shielding for internal circuitry. In addition, the housing includes windows through a portion of the magnetic shield, allowing reed switches, Hall effect embedded telemetry coils, or other magnetically actuated devices to be actuated by interaction with the magnetostatics. Background technique [0002] The circuitry of most AIMDs is susceptible to the magnetic field generated by a Magnetic Resonance Imaging (MRI) machine or other equipment that generates a magnetic field similar to an MRI machine. Consequently, some patients using AIMDs cannot undergo MRI procedures. Without proper shielding, these magnetic fields will interfere and possibly render circuits in the AIMD inoperable. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/36A61N1/39A61N1/05A61M1/00A61M5/00A61F11/00H05K9/00H01B11/06
Inventor 海萨姆·胡赛因克里斯廷·A.·弗里斯罗伯特·A.·史蒂文森
Owner GREATBATCH SIERRA INC
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