Method of deploying a ventricular lead containing a hemostasis mechanism
First Claim
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1. 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.
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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.
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Citations
2 Claims
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1. A method comprising:
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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. - View Dependent Claims (2)
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Specification
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Current AssigneeCardiac Pacemakers Incorporated (Boston Scientific Corporation)
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Original AssigneeCardiac Pacemakers Incorporated (Boston Scientific Corporation)
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InventorsLiu, Lili, Zerby, Christopher M., Crevensten, Gwen, Tockman, Bruce, Westlund, Randy
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Primary Examiner(s)Schaetzle, Kennedy
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Application NumberUS09/738,590Publication NumberTime in Patent Office1,040 DaysField of Search128/898, 128/899, 128/917, 607/116, 607/119, 607/122, 600/374, 600/373, 604/900, 604/167.03, 604/167.04US Class Current128/898CPC Class CodesA61N 1/056 Transvascular endocardial e...A61N 1/0565 Electrode headsA61N 1/0573 chacterised by means penetr...
