Retention mechanism for an implantable lead
AssigneeCardiac Pacemakers, Inc.
InventorsG. Shantanu Reddy, Benjamin Michael Nitti, Bryan Peter Nelson, Christopher Alan Fuhs, Andrew L. De Kock, Peter Hall
Life of this patent
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Abstract
A retention device for use with an implantable medical device (IMD) may comprise an elongate body including a configured to receive the lead of the IMD. The retention device may also include securing mechanisms coupled to the elongate body and configured to push against tissue of a patient. The securing mechanisms may also include linking elements coupled to the elongate body and a portion of the securing mechanisms.
Claims18
A retention device for use with an implantable medical device (IMD) having a lead, the lead having a proximal end for coupling to a canister and a distal end, the retention device comprising:
- an elongate body in the form of a continuous tube having an open proximal end, an open distal end, and a hollow lumen extending from the proximal end to the distal end configured to receive the lead;
- and
- a first securing mechanism defining a delivery configuration in which the first securing mechanism is collapsed toward the elongate body, and a deployed configuration in which the first securing mechanism extends outward from the elongate body, having:
- a first end coupled to the elongate body;
- a second end opposite the first end and configured to push against tissue of a patient in the deployed configuration;
- and
- an intermediate portion extending between the first and second ends;
- and
- a first linking element having a first end coupled to the elongate body and a second end coupled to the intermediate portion of the first securing mechanism, wherein the one or more first linking elements limit radial extension of the securing mechanism in the deployed configuration;
- wherein the elongate body defines a distance between the first end of the first securing mechanism and the first end of the first linking element and the distance does not change between the delivery configuration and the deployed configuration.
A retention device for use with an implantable medical device (IMD), the retention device comprising an elongate body having a proximal end, a distal end, a hollow lumen extending from the proximal end to the distal end configured to receive a lead of the IMD, the retention device further comprising one or more securing mechanisms having a first end configured to bend such that a portion of the one or more securing mechanisms extends to a predefined angle relative to the elongate body;
- wherein the one or more securing mechanisms includes a second end that is configured to extend to the predefined angle and push against tissue of a patient;
- and
- wherein the elongate body is formed from a tube with the securing mechanisms formed from a cut portion of the tube.
A method of implanting an implantable lead having a first end for coupling to an implantable medical device and a second end for implantation at a target site in the patient, with a lead body extending therebetween, the method comprising the use of a retention device having a first securing mechanism for securing the retention mechanism at a desired location in tissue, the method comprising:
- inserting the implantable lead into the patient with the retention device placed on the lead at a desired location thereon and with a sheath disposed about at least a portion of the lead and compressing the first securing mechanism of the retention device in a delivery configuration;
- and
- at least partly withdrawing the sheath to a position proximal of the first securing mechanism, wherein the first securing mechanism responds to withdrawal of the sheath by self-expanding to a deployed configuration to anchor the implantable lead to tissue of the patient;
- wherein the retention device comprises:
- an elongate body in the form of a continuous tube having an open proximal end, an open distal end, and a hollow lumen extending from the proximal end to the distal end configured to receive the lead;
- and
- the first securing mechanism, defining a delivery configuration in which the first securing mechanism is collapsed toward the elongate body, and a deployed configuration in which the first securing mechanism extends outward from the elongate body, having:
- a first end coupled to the elongate body;
- a second end opposite the first end and configured to push against tissue of a patient in the deployed configuration;
- and
- an intermediate portion extending between the first and second ends;
- and
- a first linking element having a first end coupled to the elongate body and a second end coupled to the intermediate portion of the first securing mechanism, wherein the one or more first linking elements limit radial extension of the securing mechanism in the deployed configuration;
- wherein the elongate body defines a distance between the first end of the first securing mechanism and the first end of the first linking element and the distance does not change as the first securing mechanism moves from the delivery configuration to the deployed configuration.
Dependencies are inferred from the claim text.