Pmt Corporation

Eric Caillé

Benjamin J Osa

Alfred A Iversen

Joseph Copley

Deron J Singer

Charles Talbott

Wade Fredrickson

Merrill W Reuter

Cortical electrode assemblies having a first flexible electrode body and a second flexible electrode body. The first electrode body may have an array of macro electrode contacts and the second electrode body may have a micro-wire electrode array or a depth electrode structure. The first electrode body has at least one aperture and the second electrode body may have a grommet-like body structure which may be positioned in predetermined thru holes of the first electrode body with respect to the electrode grid.

Cortical electrode assemblies

MR conditional needle and surface electrode assemblies. The surface electrode utilizes a disc or cone-shaped structure with a bore with a concave bottom surface for receiving a conductive gel and an insulated wire with a connector for an EEG. The needle electrode assembly utilizes a cylindrical-shaped structure and is constructed of an MR conditional material having a needle and an insulated lead wire structure with a connector for an EEG.

MR conditional needle and surface electrodes

Improved electrode assemblies for recording and stimulation. Cortical and depth electrode structures are provided as well as inline interconnection systems. Methods of manufacture are further taught to provide enhanced surfaces for cortical electrodes. The inline interconnection systems include connector assembly embodiments for electrode leads which have structure providing ease of EEG recording as well as stimulation.

Electrode for recording and stimulation

A method and device for treating human intervertebral disc herniations using an endoscopic procedure. An access port is opened into and through the annulus of a disc to remove nucleus pulposus. Subsequent treatment, a balloon device having a valve structure is positioned via an endoscopic procedure into the disc space. The balloon device is filled with a physiological fluid to occupy the disc interspace or to maintain some degree of distraction of the created disc space. Post surgery, after fibrocollagenous tissue has grown into the disc space, a second endoscopic procedure is performed to remove the balloon device. Fluid is removed to collapse the balloon structure and then removed via the guide tube. The ingrowth of fibrocollagenous tissue will continue to fill the void formerly occupied by the balloon device. The balloon device has a rigid valve body and a flexible balloon member. The valve body has an end plug, a valve chamber holding a valve member and a cooperating biasing structure. The balloon member of the device is inserted into a vacated nucleus space of a herniated disc and then inflated with a physiological fluid using a fill tube. The balloon member, valve body, and fill tube or portions thereof may be constructed of a radiolucent material to provide visibility during implantation, surveillance and removal. The balloon device may be used in the cervical, lumbar or thoracic region of the spine.

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Chanhassen, MN, United States of America

Eric Caillé