摘要:
Systems and methods deploy an electrode structure in contact with the tissue region. The electrode structure carries a sensor at a known location on the electrode structure to monitor an operating condition. The systems and methods provide an interface, which generate an idealized image of the electrode structure and an indicator image to represent the monitored operating condition in a spatial position on the idealized image corresponding to the location of the sensor on the electrode structure. The interface displays a view image comprising the idealized image and indicator image. The systems and methods cause the electrode structure to apply energy to heat the tissue region while the view image is displayed on the display screen.
摘要:
Systems and methods deploy an electrode structure in contact with the tissue region. The electrode structure carries a sensor at a known location on the electrode structure to monitor an operating condition. The systems and methods provide an interface, which generate an idealized image of the electrode structure and an indicator image to represent the monitored operating condition in a spatial position on the idealized image corresponding to the location of the sensor on the electrode structure. The interface displays a view image comprising the idealized image and indicator image. The systems and methods cause the electrode structure to apply energy to heat the tissue region while the view image is displayed on the display screen.
摘要:
A device for treating a tissue region at or near a sphincter including a proximal support, a distal support and an expandable basket having a plurality of spines. The spines have a proximal portion, a distal portion and an intermediate portion therebetween, wherein the spines are movable from a first non-expanded position to a second expanded position wherein in the expanded position the intermediate portion of the spines extends outwardly radially beyond the proximal and distal portions of the spines. A plurality of electrodes are carried by the spines and movable outwardly to an outward position to penetrate tissue for application of energy to the tissue region.
摘要:
Systems for treating a mucosal surface of an alimentary canal tissue region are provided. The systems can include an elongate support structure, an expandable member positionable at a distal portion of the support structure and one or more radio frequency (RF) ablation electrodes carried by the expandable member. The elongate support structure and the expandable member can be adapted to place the one or more electrodes in contact with a mucosal surface of an alimentary canal tissue region. The system can further include an RF energy source connected to the one or more electrodes.
摘要:
Methods of accessing and ablating abnormal epithelium tissue in an alimentary canal are provided. The methods can include steps of (i) inserting an operative element into an alimentary canal such that the proximate to a portion of the alimentary canal having tissue to be ablated; and (ii) using the operative element to apply cryogenic ablation to a site of abnormal tissue.
摘要:
Methods treat a tissue region. In one arrangement, the methods deploy an endoscope in an esophagus and visualize with the endoscope a Z-line that marks a transition between esophageal tissue and stomach tissue by observing tissue color change at or near the Z-line. The methods deploy an electrode support structure over the endoscope at or near the Z-line visualized by the endoscope, wherein the endoscope serves as a guide for the electrode support structure. The methods introduce from the electrode support structure a tissue-piercing needle electrode into tissue at or near the Z-line and observe introduction of the tissue-piercing needle electrode using the endoscope. The methods couple the tissue-piercing electrode to a source of radio frequency energy to ohmically heat tissue and create a subsurface tissue lesion in tissue at or near the Z-line, and observe creation of the tissue lesion using the endoscope.
摘要:
Systems and methods for treating a tissue region employ an expandable structure projecting beyond the distal end of a catheter tube. A distal tail projects beyond the far end of the basket assembly. The distal tail includes a guidewire lumen that accommodates passage of a guidewire without threading the guidewire through the catheter tube.
摘要:
Improved devices, systems and methods for treating a tissue region provide straightforward, yet reliable ways for installing diverse functional components within the confined space of a catheter-based instrument.
摘要:
Improved devices, systems and methods for treating a tissue region provide straightforward, yet reliable ways for installing diverse functional components within the confined space of a catheter-based instrument.
摘要:
Systems and methods for treating a tissue region employ an expandable structure projecting beyond the distal end of a catheter tube. A distal tail projects beyond the far end of the basket assembly. The distal tail includes a guidewire lumen that accommodates passage of a guidewire without threading the guidewire through the catheter tube.