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Edge Wrap Paddle Electrode

IP.com Disclosure Number: IPCOM000226608D
Publication Date: 2013-Apr-18
Document File: 2 page(s) / 40K

Publishing Venue

The IP.com Prior Art Database

Abstract

Electrical stimulation of a spinal cord, which induces pain-relieving paresthesia, can be provided by implantable systems that include electrodes coupled to elongate electrical leads. Such electrodes may be percutaneously or surgically introduced into the epidural space surrounding the spinal cord. Medical electrical leads which include an array of electrodes provide flexibility for selection from a variety of stimulation patterns upon implantation without having to physically reposition the lead within the epidural space. Such leads, wherein the electrode array is coupled along a body of the lead or along a distal paddle-like termination of the lead body, are known in the art. However, there is still a need for new spinal cord lead designs including electrical contacts that extend beyond outer most edge of paddle design and fit securely within the epidural space surrounding the spinal cord, and conform to the spinal cord so that an array or plurality of electrodes coupled to the distal end are in intimate contact with the dura mater enclosing the spinal cord.

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Edge Wrap Paddle Electrode

Background:

Electrical stimulation of a spinal cord, which induces pain-relieving paresthesia, can be provided by implantable systems that include electrodes coupled to elongate electrical leads. Such electrodes may be percutaneously or surgically introduced into the epidural space surrounding the spinal cord. Medical electrical leads which include an array of electrodes provide flexibility for selection from a variety of stimulation patterns upon implantation without having to physically reposition the lead within the epidural space. Such leads, wherein the electrode array is coupled along a body of the lead or along a distal paddle-like termination of the lead body, are known in the art. However, there is still a need for new spinal cord lead designs including electrical contacts that extend beyond outer most edge of paddle design and fit securely within the epidural space surrounding the spinal cord, and conform to the spinal cord so that an array or plurality of electrodes coupled to the distal end are in intimate contact with the dura mater enclosing the spinal cord.

Description:

According to one aspect, an electrical stimulation portion adapted for implantation in a person's body to provide therapeutic electrical stimulation of target spinal cord tissue includes a plurality of stimulating electrode contacts that are integrated on a first face of the stimulation portion and are adapted for implantation in the person's body with the stimulating portion. The plurality of stimulation electrode contacts comprise at least one stimulating electrode contact having a first contact area and at least one traverse array of stimulating electrode contacts. Each traverse array comprises a plurality of stimulating electrode contacts aligned in a row and spaced apart from each other in a direction approximately perpendicular to a longitudinal axis of the stimulation portion.

Further embodiments of this idea may provide one or more advantages. For example, some embodiments provide an electrical stimulating portion having a transverse array of stimulating electrode contacts that are aligned in a row in a direction perpendicular to a longitudinal axis of the stimulation portion and that are smaller than other stimulating electrode contacts of the lead to increase the ability of the stimulating portion to flex or bend transversely about the longitudinal axis of the stimulation portion. In addition, some embodiments include an increased ability of the stimulating portion to flex or bend transversely about a longitudinal axis of the stimulating portion enables an operator of the stimulating portion to more...