Catheter positioning system
First Claim
1. A positioning system for guiding a catheter to a location where a pulmonary vein extends from an atrium, comprising a deflection device, a sheath adapted to be deflected by the deflection device, and a guidewire, wherein the deflection device can be removably engaged within the sheath and wherein the deflection device and the sheath cooperate to facilitate positioning of the guidewire within the pulmonary vein when the guidewire is advanced through the sheath and into the atrium.
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Accused Products
Abstract
The present invention relates to a system adapted to position an ablation catheter at a location where a pulmonary vein extends from an atrium. The system includes a deflection device and a sheath and optionally uses a guidewire. An ablation catheter is disclosed for use with the positioning system, wherein the deflection device and the sheath cooperate so as to facilitate positioning of the catheter at the location.
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Citations
47 Claims
- 1. A positioning system for guiding a catheter to a location where a pulmonary vein extends from an atrium, comprising a deflection device, a sheath adapted to be deflected by the deflection device, and a guidewire, wherein the deflection device can be removably engaged within the sheath and wherein the deflection device and the sheath cooperate to facilitate positioning of the guidewire within the pulmonary vein when the guidewire is advanced through the sheath and into the atrium.
- 24. A positioning system for guiding an ablation catheter to a location where a lumen extends from a body cavity, comprising a deflection device and a sheath having an opening at a distal end, the ablation catheter being independently advanceable through the sheath and out the distal end, wherein the deflection device can be removably engaged within the sheath and wherein the deflection device and the sheath cooperate to facilitate positioning of the ablation catheter at the location when the catheter is advanced through the sheath and into the body cavity and guided toward the location.
- 41. A positioning system for guiding an ablation catheter to a location where a pulmonary vein extends from an atrium, comprising a deflection device and a transeptal sheath having proximal and distal ends, wherein the deflection device is removably positionable within the transeptal sheath without extending beyond the distal end of the sheath.
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45. A positioning system for placing a linear ablation element in contact with a length of tissue along an atrial wall, comprising:
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a transeptal sheath having a distal port, the transeptal sheath being adapted for traversing an atrial septum;
a first guiding introducer adapted for slidable advancement through the transeptal sheath and out the distal port;
a first guidewire adapted for slidable advancement through the guiding introducer, the guiding introducer being shaped to direct the first guidewire toward a first pulmonary vein, the first guidewire having an expandable balloon disposed along a distal end portion and adapted for engagement with the first pulmonary vein;
an ablation catheter adapted for advancement over the first guidewire and into the left atrium, the ablation catheter having the linear ablation element disposed along a distal end portion and a side port located proximal to the ablation element; and
a second guidewire adapted for advancement through the ablation catheter and out through the side port for insertion into a second pulmonary vein for engagement therein. - View Dependent Claims (46, 47)
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Specification