Senin, 05 Januari 2009

Atrial Fibrillation

Atrial fibrillation (AF or A Fib) is the most common abnormal heart rhythm. It is a very fast, uncontrolled heart rhythm that occurs when the upper chambers of the heart (the atria) try to beat so fast that they only can quiver. During AF, the upper chambers beat between 350 and 600 times per minute. Normal heart rhythm is between 60 and 100 beats per minute. Due to the erratic rhythm in the upper chambers, the rhythm of the lower chambers of the heart (the ventricles) can also become very irregular.

Because the heart’s pumping function isn’t working properly, the blood is not completely emptied from the heart’s chambers, causing it to pool and sometimes clot. Sometimes, clotted blood dislodges from the atria and results in a stroke. The American Heart Association estimates that of the 700,000 strokes occurring each year in the U.S., 15 percent—about 105,000—occur in people with AF.

Normal Rhythm

Every normal heart has a normal rhythm. That rhythm varies from person to person. In most healthy people, the heart at rest beats about 60 to 100 times per minute. A small bunch of heart cells called the sinoatrial node keeps time.

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IBI-1500T9 Cardiac Ablation Generator

Approved for Use: United States
This device is approved for use in the United States.

IBI 1500T9 Cardiac Ablation Generator - Temperature-controlled to regulate high-power delivery.

The IBI-1500T9 Cardiac Ablation Generator delivers up to 100 watts of power for precise, controlled ablation procedures in the electrophysiology lab.

The temperature-controlled generator adjusts the increase in RF energy delivery over time to achieve desired target temperature and automatically distinguishes between irrigated and non-irrigated ablation catheters by adjusting appropriate parameter levels.

The IBI-1500T9 accommodates the Therapy™ family of catheters.

Features

  • Up to 100-watt power radiofrequency (RF) ablation generator
  • Automatically distinguishes between irrigated and non-irrigated ablation catheters, adjusting appropriate parameter levels
  • Temperature-controlled to maintain target temperature while reducing incidence of sudden impedance rise and coagulum formation on catheter tip
  • Adjusts the increase in RF energy delivery over time through use of proportional integral derivative (PID)

View Indications, Contraindications, Warnings, Precautions & Potential Adverse Events.

Therapy™ Cool Path™ Irrigated Ablation Catheter

Approved for Use: United States
This device is approved for use in the United States.

Therapy Cool Path Irrigated Ablation Catheter - Irrigated ablation for deeper lesions.

The Therapy Cool Path irrigated tip ablation catheter has six equidistant irrigation ports on the distal tip designed for tip electrode cooling. The unique design of the Therapy Cool Path allows the catheter to maintain lower tip-to-tissue temperature with automated power control, monitored temperature feedback, and deeper, wider lesion creation with minimal power use. Irrigated ablation systems allow the creation of larger and deeper lesions with less charring and risk of coagulum formation by cooling the tip/tissue interface.

Features

  • Externally irrigated ablation catheter
  • Six equidistant irrigation ports on the distal tip for electrode cooling
  • Maintains lower tip-to-tissue temperature
  • Aids in the creation of deeper and wider lesions
  • Less charring and coagulum
  • M, L, XL, and FL curve configurations
  • Additional braided option provides substantial transfer of torque for more responsive handling

The Therapy Cool Path with more internal braiding provides greater torqueability – virtually doubling the amount of a 360° rotation of the shaft.

View Indications, Contraindications, Warnings, Precautions & Potential Adverse Events.