Ablation in the gastrointestinal tract to achieve hemostasis and eradicate lesions with a propensity for bleeding
First Claim
1. A method of treating an area of bleeding in a gastrointestinal tract comprising:
- identifying the area of bleeding utilizing an endoscope;
positioning a therapy device coupled with a distal end of the endoscope in the gastrointestinal tract adjacent to a target site within the area of bleeding;
pressuring the bleeding area utilizing both the therapy device and the endoscope to diminish the amount of blood within blood vessels in the bleeding area; and
applying a non-surgical hemostatic therapy utilizing the therapy device to a target site in the area while continuing to pressure the area.
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Accused Products
Abstract
Devices and methods are provided for the ablation of regions of the digestive tract to achieve hemostasis and to eradicate chronically bleeding lesions as occur with gastric antral vascular ectasia (GAVE), portal hypertensive gastropathy (PHG), radiation proctopathy and colopathy, arteriovenous malformations, and angiodysplasia. Ablation is typically provided in a wide-field manner, and in conjunction with sufficient pressure to achieve coaptive coagulation. Ablation, as provided the invention, starts at the mucosa and penetrates deeper into the gastrointestinal wall in a controlled manner. Ablation control may be exerted by way of electrode design and size, energy density, power density, number of applications, pattern of applications, and pressure. Control may also be provided by a fractional ablation that ablates some tissue within a target region and leaves a portion substantially unaffected. Embodiments of the device include an ablational electrode array that spans 360 degrees and an array that spans an arc of less than 360 degrees.
441 Citations
50 Claims
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1. A method of treating an area of bleeding in a gastrointestinal tract comprising:
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identifying the area of bleeding utilizing an endoscope; positioning a therapy device coupled with a distal end of the endoscope in the gastrointestinal tract adjacent to a target site within the area of bleeding; pressuring the bleeding area utilizing both the therapy device and the endoscope to diminish the amount of blood within blood vessels in the bleeding area; and applying a non-surgical hemostatic therapy utilizing the therapy device to a target site in the area while continuing to pressure the area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of ablationally-treating a target site within an area of bleeding in a gastrointestinal tract comprising:
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pressuring the bleeding area utilizing both a therapy device and an endoscope to diminish the amount of blood within blood vessels in the bleeding area, wherein the therapy device is coupled to a distal end of the endoscope; and delivering radiofrequency energy to a tissue surface within the target area utilize the therapy device coupled with the distal end of the endoscope, the target area being a contiguous radial portion of the gastrointestinal tract; and controlling the delivery of radiofrequency energy across the tissue surface within the target area and into a depth of tissue within the target area. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50)
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48. A method of ablationally-treating a target area within an area of bleeding in a gastrointestinal tract comprising:
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advancing an ablation structure into the alimentary canal, a non-penetrating electrode pattern on the structure, the structure supported on an instrument; positioning the ablation structure adjacent to the target area; moving the ablation structure toward a tissue surface of the target area to make therapeutic contact on the target area prior to delivering energy; position-locking the ablation on structure, wherein the position-locking includes developing suction between the structure and an ablation site; pressuring the bleeding area to diminish the amount of blood within blood vessels in the bleeding area; and delivering radiofrequency energy to the tissue surface within the target area, the target area being a contiguous radial portion of the gastrointestinal tract; and controlling the delivery of radiofrequency energy across the tissue surface within the target area and into a depth of tissue within the target area.
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Specification