Lead insertion devices and associated systems and methods
First Claim
1. A system for implanting a plurality of medical devices in a patient through a single percutaneous entry point, the system comprising:
- a cannula having a cannula lumen extending therethrough, the cannula lumen having an inside diameter;
a first dilator having an outside diameter smaller than the inside diameter of the cannula lumen, the first dilator positionable within the cannula lumen to prevent coring upon insertion of the cannula and the first dilator into the patient to produce the percutaneous entry point; and
at least one additional dilator, including a final dilator, wherein each additional dilator includes a dilator lumen having an inside diameter larger than an outside diameter of a preceding dilator, wherein each additional dilator is positionable over a preceding dilator to expand the percutaneous entry point, and wherein the final dilator includes a lumen having an elliptical cross-section shape.
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Accused Products
Abstract
Insertion devices and associated systems and methods for the percutaneous placement of patient leads are disclosed herein. A system in accordance with a particular embodiment includes a cannula having a lumen and a first dilator. The first dilator can be positioned within the lumen and the first dilator and the cannula can be used to create a percutaneous entry point. An additional dilator can be positioned over the first dilator and advanced into the percutaneous entry point to expand the percutaneous entry point. A final dilator can be inserted into the patient and two leads can be advanced into the patient through the final dilator.
291 Citations
10 Claims
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1. A system for implanting a plurality of medical devices in a patient through a single percutaneous entry point, the system comprising:
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a cannula having a cannula lumen extending therethrough, the cannula lumen having an inside diameter; a first dilator having an outside diameter smaller than the inside diameter of the cannula lumen, the first dilator positionable within the cannula lumen to prevent coring upon insertion of the cannula and the first dilator into the patient to produce the percutaneous entry point; and at least one additional dilator, including a final dilator, wherein each additional dilator includes a dilator lumen having an inside diameter larger than an outside diameter of a preceding dilator, wherein each additional dilator is positionable over a preceding dilator to expand the percutaneous entry point, and wherein the final dilator includes a lumen having an elliptical cross-section shape. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for implanting a plurality of medical devices in a patient through a single preculaneous entry point,the system comprising:
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a cannula having a cannula lumen extending therethrough, the cannula lumen having an inside diameter; a first dilator having an outside diameter smaller than the inside diameter of the cannula lumen, the first dilator positionable within the cannula lumen to prevent coring upon insertion of the cannula and the first dilator into the patient to produce the percutaneous entry point; at least pne addition dilator, including a final dilator,wherein each additional diator includes a dilator lumen having an inside diameter larger than an outside diameter of a preceding dilator, wherein each additional dilator is positionable over a preceding dilator to expand the percutaneous entry point;
andtwo leads, each lead having a diameter, wherein the final dilator includes a lumen having an elliptical cross-sectional shape, and wherein a diameter along a first axis of the dilator lumen is greater than the sum of the diameters of the leads.
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8. A patient system comprising:
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two leads positionable to deliver electrical therapy signals, each lead having a diameter; an insertion needle including a cannula and a stylet, wherein the cannula includes a cannula lumen having an inside diameter, and the stylet includes an outside diameter smaller than the inside diameter of the cannula lumen; a first dilator having an outside diameter smaller than the inside diameter of the cannula lumen and positionable within the cannula lumen; and at least one additional dilator, including a final dilator, wherein each additional dilator includes a dilator lumen having an inside diameter larger than an outside diameter of a preceding dilator, wherein each additional dilator is positionable over a preceding dilator to expand a percutaneous entry point, and wherein the final dilator includes a dilator lumen having an inside diameter or width greater than the sum of the diameters of the leads. - View Dependent Claims (9, 10)
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Specification