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IMPLANTABLE IS-4 PACE/SENSE ADAPTER

IP.com Disclosure Number: IPCOM000202483D
Publication Date: 2010-Dec-17
Document File: 5 page(s) / 266K

Publishing Venue

The IP.com Prior Art Database

Abstract

An adapter for use with IS-4 compatible IMDs and leads. The adapter allows a medical professional to implant a new pace/sense lead of any type without effecting or removing the existing IS-4 system. The adapter would include a port for the old or original IS-4 lead and at least one additional port for the new pace/sense lead, and also would include an IS-4 lead terminal pin that would fit in the existing IS-4 header of the implanted IMD.

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IMPLANTABLE IS-4 PACE/SENSE ADAPTER

            Some implantable medical devices (IMDs) include a standard header portion that complies with a standard set forth by the International Organization for Standardization (ISO), which is known as the IS-4 standard.  Such an IS-4 compatible header allows various IS-4 compatible leads to be connected to the IMD. 

A benefit of an IS-4 header and lead system is that it allows pace/sense and defibrillation circuitry to be connected to the IMD using a single physical plug.  However, if the integrity of the system somehow becomes compromised, and, for example, the pace/sense capability is no longer functioning, then an entirely new IS-4 lead would be necessary.  As such, the old IS-4 lead would need to be extracted.   

            An adapter is provided for use with IS-4 compatible IMDs and leads.  The adapter allows a medical professional to implant a new pace/sense lead of any type without effecting or removing the existing IS-4 system.  The adapter would include a port for the old or original IS-4 lead and at least one additional port for the new pace/sense lead, and also would include an IS-4 lead terminal pin that would fit in the existing IS-4 header of the implanted IMD.

            According to one implementation, an adapter 10 is illustrated below in FIGS. 1-3.   As shown in FIG. 1, the adapter 10 includes an IS-4 port 12 into which a previously implanted IS-4 lead may be inserted.  The adapter 10 also includes at least one additional port, which is a pace-sense electrode port 14 as shown, into which a newly implanted pace-sense lead may be inserted.  The adapter 10 further includes an IS-4 male lead terminal pin 16 that may fit into an IS-4 port in a header portion 24 of a previously implanted IMD 22 (see FIG. 2). 

FIG. 1 illustrates how adapter 10 may be configured to attach to the previously implanted IMD 22.  The shape of the adapter 10 may conform to the shape of the IMD, such as to provide a minimal increase to the overall size of the IMD 22 with the adapter 10 attached.  The benefit of keeping the size small is to minimize pocket bulk.  A minimal surface area is also beneficial in order to minimize potential for infection. 

            The adapter 10 may be made of silicone, for example.  Also, the adapter 10 may include an inner conduction system that enables the signals from the leads to be conveyed to the IMD (see FIGS. 2-3).  Techniques that may be used to make the adapter 10 include those well-kn...