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US 6,634,364 B2Granted
Method of deploying a ventricular lead containing a hemostasis mechanism
AssigneeCardiac Pacemakers, Inc.
InventorsRandy Westlund, Bruce Tockman, Gwen Crevensten, Lili Liu, Christopher M. Zerby
Life of this patent
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Abstract
A seal adapted for use with medical devices is provided. The medical device may be a lead having a distal tip adapted for implantation on or about the heart and for connection to a system for monitoring or stimulating cardiac activity. The lead assembly in one embodiment includes an atraumatic tip. A seal is provided within the lead tip assembly, which prevents or limits further entry of fluids through the lead tip. The lead may be a left ventricular lead with a hemostasis mechanism provided therewithin.
Claims2
A method comprising:
- providing an over-the-wire left ventricular lead comprising a lead body having a proximal end, a distal end and a terminal pin at the proximal end thereof, the lead body having an interior portion defining a lumen therethrough;
- providing a hemostasis mechanism comprising a housing with a polymer membrane therein, the polymer membrane defining at least one aperture for a needle or guide wire to penetrate the polymer membrane;
- attaching the hemostasis mechanism to the lead by attaching the housing to the terminal pin;
- inserting a needle in the at least one aperture of the membrane and filling the lead lumen with a sterile fluid;
- withdrawing the needle from the membrane, whereby the polymer membrane closes sufficiently to maintain a hydraulic lock on the fluid in the lumen;
- passing a guide wire through the membrane and inserting the guide wire into the lead lumen;
- and
- deploying the lead, whereby the sterile fluid is maintained in the lead lumen by the membrane, the sterile fluid preventing blood from entering the lead lumen.
5 more elements
Dependencies are inferred from the claim text.