MEDICAL ELECTRICAL LEAD WITH EXPANDABLE FIXATION FEATURES
First Claim
1. A medical electrical lead configured to be partially implanted in a cardiac vessel, the lead comprising:
- an elongate body defining a proximal region and a distal region,the distal region including;
an electrode on the body; and
a fixation feature including a radially expandable structure having a first end fixedly attached to the body and a second end slidably coupled to the body, the radially expandable structure adapted to change from a radially collapsed configuration to a radially expanded configuration;
a conductor disposed within the body and electrically coupled to the electrode; and
a tendon housed at least partially within the body and operatively connected to the second end of the radially expandable structure to facilitate selection between the radially collapsed and radially expanded configurations of the radially expandable structure.
1 Assignment
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Accused Products
Abstract
A medical electrical lead adapted to be at least partially implanted in a cardiac vessel includes a fixation feature operable to change from an undeployed configuration to a deployed configuration in which the fixation feature is adapted to engage an inner surface of the cardiac vessel. A tendon is disposed within a lumen of the lead and is operatively connected to the fixation feature and adapted to cause the fixation feature to change from the undeployed configuration to the deployed configuration for acute and/or chronic fixation of the lead. In one embodiment, the fixation feature includes a deflectable region of the lead which in the deployed configuration causes a surface of the lead body to engage the inner surface of the cardiac vessel. In another embodiment, the fixation feature includes a radially expandable structure for engaging the inner surface of the vessel in the deployed configuration.
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Citations
20 Claims
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1. A medical electrical lead configured to be partially implanted in a cardiac vessel, the lead comprising:
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an elongate body defining a proximal region and a distal region, the distal region including; an electrode on the body; and a fixation feature including a radially expandable structure having a first end fixedly attached to the body and a second end slidably coupled to the body, the radially expandable structure adapted to change from a radially collapsed configuration to a radially expanded configuration; a conductor disposed within the body and electrically coupled to the electrode; and a tendon housed at least partially within the body and operatively connected to the second end of the radially expandable structure to facilitate selection between the radially collapsed and radially expanded configurations of the radially expandable structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A medical electrical lead comprising:
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an elongate body defining a proximal region and a distal region adapted to be at least partially implanted in a vessel; radially expandable fixation means in the distal region for engaging an inner surface of the vessel, the radially expandable fixation means operable to change from a radially collapsed configuration to a radially expanded configuration; a lumen extending from the proximal region to at least the radially expandable fixation means; and a tendon disposed within the lumen operatively connected to the radially expandable fixation means, wherein the tendon is operable to facilitate selection between the radially collapsed and radially expanded configurations of the radially expandable fixation means. - View Dependent Claims (17, 18)
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19. A method for fixation of a medical electrical lead in a coronary vessel, the lead including a conductor, a distal fixation feature, and a tendon disposed within the lead and operatively connected to the fixation feature, the method comprising:
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transvenously delivering the lead such that the fixation feature is positioned within the coronary vessel in a radially collapsed configuration; and removing a tensile force in the tendon such that the fixation feature assumes a radially expanded configuration and engages a wall of the coronary vessel. - View Dependent Claims (20)
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Specification