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IMPLANTABLE MEDICAL DEVICE WITH INTERNAL PCB TELEMETRY COIL

IP.com Disclosure Number: IPCOM000227429D
Publication Date: 2013-May-07
Document File: 3 page(s) / 2M

Publishing Venue

The IP.com Prior Art Database

Abstract

A cardiac rhythm management device, such as a pulse generator (implantable medical device or IMD) can include a telemetry coil. For years, the pulse generator has contained a telemetry coil antenna component with wires connected to a printed circuit board. These electronic components, i.e., the printed circuit board, the telemetry coil, along with a power source (battery) are further hermetically sealed within a casing of a metallic biocompatible material. The approaches for assembling electronic components to form an IMD involve various steps of manufacturing processes that can make the entire assembling process of the IMD complex, time consuming, and costly. Therefore, there is a need for an IMD and/or a method of assembling components for an IMD, which is simple and can be used in demanding environments.

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IMPLANTABLE MEDICAL DEVICE WITH

INTERNAL PCB TELEMETRY COIL

A cardiac rhythm management device, such as a pulse generator (implantable medical device or IMD) can include a telemetry coil.  For years, the pulse generator has contained a telemetry coil antenna component with wires connected to a printed circuit board.   These electronic components, i.e., the printed circuit board, the telemetry coil, along with a power source (battery) are further hermetically sealed within a casing of a metallic biocompatible material.

The approaches for assembling electronic components to form an IMD involve various steps of manufacturing processes that can make the entire assembling process of the IMD complex, time consuming, and costly.  Therefore, there is a need for an IMD and/or a method of assembling components for an IMD, which is simple and can be used in demanding environments.

In an example, this document describes an apparatus such as a cardiac rhythm management device including an implantable medical device having a printed circuit board. 

This disclosure reduces the cost of a PG telemetry coil by integrating the telemetry coil into the multi-layer rigid printed circuit board/hybrid which allows for an automated assembly.  By embedding the telemetry coil in the printed circuit board, the present structure eliminates component costs and assembly costs.

The telemetry coil works by inductive telemetry.  The telemetry coil is formed using a patterned layer(s) in the shape of a coil on the multi-layer printed wiring board.  (See FIG. 1). 

This telemetry coil can be buried within the hybrid (using a multi-layer PCB).  The printed circuit board can be encapsulated within an overmolded polymer material.  This structure allows for easy manufacture of the pulse generator and allows for simpler telemetry design without a separate telemetry coil. 

The telemetry coil can be located within the body (substrate material) of the PCB.  The telemetry coil can be inserted into the PCB during PCB manufacturing.  In some embodiments, the PCB can include a plurality of laminated layers, with telemetry coil superimposed upon one or more layers of the printed circuit board. 

In one example, the telemetry coil can be inserted within the PCB using an encapsulated component placement (ECP) process....