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DEVICE FOR EXTERNAL LEAD FIXATION

IP.com Disclosure Number: IPCOM000216029D
Publication Date: 2012-Mar-19

Publishing Venue

The IP.com Prior Art Database

Abstract

Devices, systems, and techniques for attaching a medical lead to an exterior skin surface of a patient are disclosed. Percutaneous leads, for example, may be connected to an external neurostimulator and enter the patient so that electrodes can be placed adjacent target tissue within the patient. A lead capture structure may secure an external portion of the lead within the lead capture structure. The lead capture structure, while securing the lead, may be attached to the exterior skin surface to limit movement of the lead within the patient. In one example, the lead capture structure may include a first housing shell and a second housing shell that close around on an external portion of the lead.

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DEVICE FOR EXTERNAL LEAD FIXATION TECHNICAL FIELD


[0001]The disclosure relates to medical devices and, more particularly, medical devices that secure a medical lead to a patient.

BACKGROUND


[0002]Medical leads are generally used to transmit electrical signals between a medical device and tissue of patient. For example, a medical lead may include a connector that electrically couples to a neurostimulator that generates stimulation pulses. The medical lead may include one or more electrical conductors within the lead that transmit the generated pulses to one or more electrodes located at a distal end of the medical lead. In this manner, electrical stimulation may be delivered to the patient via one or more medical leads. Electrical stimulation may be used to treat various disorders such as incontinence, pain, tremors, or cardiac dysfunction. In other examples, medical leads may transmit detected electrical signals from the patient to a device.


[0003]In some examples, a medical lead may transmit electrical signals from an external neurostimulator (ENS) to an internal tissue of the patient. In this example, the medical lead may be referred to as a percutaneous medical lead or lead extension because it attaches to the ENS, enters the patient through an opening on the skin, and tunnels through the patient in order to reach the target tissue. The percutaneous lead extension may couple to an implantable lead that carries one or more electrodes. The percutaneous medical lead or lead extension is thus disposed both external to and internal of the patient.

SUMMARY


[0004]In general, the disclosure is directed to devices, systems, and techniques for attaching a medical lead to an exterior skin surface of a patient. Percutaneous leads, for example, may be connected to an external neurostimulator and enter the patient so that electrodes can be placed adjacent target tissue within the patient. A lead capture structure may secure an external portion of the lead. The lead capture structure may be attached to the exterior skin surface of the patient to limit movement of the lead within the patient that changes implanted electrode location. In some examples, the lead may be removable from the lead capture structure while the structure is attached to the patient.


[0005]In one aspect, the disclosure is directed to a device that includes a lead capture structure that at least partially defines a curved lead channel configured to receive a medical lead and a fixation structure configured to attach the lead capture structure to an external skin surface of a patient.


[0006]In another aspect, the disclosure is directed to a method that includes positioning a portion of a medical lead into a curved lead channel at least partially defined by a lead capture structure and attaching the lead capture structure to an external skin surface of a patient via a fixation structure coupled to the lead capture structure.


[0007]In a further aspect, the disclosure...