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Improved Delivery of Deep Brain Stimulation Leads

IP.com Disclosure Number: IPCOM000224928D
Publication Date: 2013-Jan-11
Document File: 1 page(s) / 58K

Publishing Venue

The IP.com Prior Art Database

Abstract

Neurostimulation systems may be used to deliver neurostimulation therapy to patients to treat a variety of symptoms or conditions such as chronic pain, tremor, Parkinson's disease, multiple sclerosis, spinal cord injury, cerebral palsy, amyotrophic lateral sclerosis, dystonia, torticollis, epilepsy, incontinence or obesity. A neurostimulation system delivers neurostimulation therapy in the form of electrical pulses. In general, neurostimulation systems deliver neurostimulation therapy via electrodes on stimulation leads located proximate to the spinal cord, pelvic nerves, or stomach, or within the brain of a patient.

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Improved Delivery of Deep Brain Stimulation Leads

SUMMARY:

Neurostimulation systems may be used to deliver neurostimulation therapy to patients to treat a variety of symptoms or conditions such as chronic pain, tremor, Parkinson's disease, multiple sclerosis, spinal cord injury, cerebral palsy, amyotrophic lateral sclerosis, dystonia, torticollis, epilepsy, incontinence or obesity. A neurostimulation system delivers neurostimulation therapy in the form of electrical pulses. In general, neurostimulation systems deliver neurostimulation therapy via electrodes on stimulation leads located proximate to the spinal cord, pelvic nerves, or stomach, or within the brain of a patient.

During implant of a deep brain stimulation (DBS) lead, a cannula is often used to guide the lead to the correct location. During the introduction of the cannula, it may be stiffened by a stylet. When the stylet is withdrawn, it may create a partial vacuum that pulls brain matter up into the cannula, damaging the brain. When the lead is inserted in the cannula for positioning into the brain, it may act as a piston, driving the air and brain matter in the cannula back into the patient's brain, causing further damage.

A cannula with one or more gas paths that open at the proximal exterior or end, and that end near, but short of, the distal end of the cannula, opening to the interior of the cannula. The purposes would be to break the suction of the stylet as it is removed from the cannula. This would allow air trapped in the cannula to escape as the lead is inserted, or stylet reinserted.

DESCRIPTION:

This idea encompasses an implant tool with passages that consist of grooves in the interior lumen surface, as seen in Figure 1. The grooves could be triangular, round or polygonal or any geometrical shape to prevent air from becoming trapped between the...