Method and apparatus for endoscopic grafting
First Claim
1. A method for reconstruction of target tissue using a sheathed graft that is encased in an inelastic perforated casing and that includes an enclosed expandable chamber extending along the graft, using a stabilizing catheter having a plurality of selectively deployable extensions at one end thereof, the method comprising the steps of:
- introducing the sheathed graft via an introduction site to position the sheathed graft at a proximal part of the target tissue;
elevating fluid pressure within the chamber to expand the chamber sufficiently to split the perforated casing for releasing the graft from the perforated casing;
deploying the extensions of the stabilizing catheter at a proximal part of the graft to press the graft adjacent the target tissue to stabilize the graft at the target tissue; and
securing the graft to the target tissue.
4 Assignments
0 Petitions
Accused Products
Abstract
Method and apparatus for reconstructing target tissue by grafting uses a stabilizing balloon cannula having an endoscope for visualizing the placement of the graft during the procedure. The method and apparatus advances a sheathed graft to the target tissue, releases the graft at the target site, occludes the target tissue, deploys a graft stabilizing catheter, dissects a cavity outside the target tissue site, maintains the dissection site, and then secures the graft to the target tissue. Alternatively, the method and apparatus creates a cavity extending to the target tissue using an everting balloon cannula with an endoscope, maintains the dissection site, introduces the graft to the target site via the dissection site, and then secures the graft to the target tissue.
140 Citations
12 Claims
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1. A method for reconstruction of target tissue using a sheathed graft that is encased in an inelastic perforated casing and that includes an enclosed expandable chamber extending along the graft, using a stabilizing catheter having a plurality of selectively deployable extensions at one end thereof, the method comprising the steps of:
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introducing the sheathed graft via an introduction site to position the sheathed graft at a proximal part of the target tissue; elevating fluid pressure within the chamber to expand the chamber sufficiently to split the perforated casing for releasing the graft from the perforated casing; deploying the extensions of the stabilizing catheter at a proximal part of the graft to press the graft adjacent the target tissue to stabilize the graft at the target tissue; and securing the graft to the target tissue. - View Dependent Claims (2)
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3. A method for reconstruction of target tissue of a body, using a dissection balloon cannula including an elongated tube element and having a plurality of lumina including a distal blunt end and a proximal closed end with an inverted balloon disposed in a first one of the lumina and capable of being everted in response to gas or fluid under pressure applied thereto, and with a second one of the lumina disposed to receive a laparoscope therein, for visualizing the tissue in the elongated cavity through the balloon as the balloon is everted;
- the method comprising the steps of;
positioning the cannula at a predetermined location within a passageway to dissect an elongated cavity in tissue planes distal to the tube element; pressurizing the balloon to evert forward from the cannula to dissect a cavity along the target tissue using the dissection balloon cannula introduced via an incision made at a predetermined location on the body; advancing the laparoscope within the second lumen for visualizing the dissection of tissue from within and through the balloon; maintaining the cavity; positioning the graft adjacent to the target tissue via the cavity; and securing the graft to the target tissue. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
- the method comprising the steps of;
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11. A method for reconstruction of aortic tissue, using a sheathed graft having a loop element attached thereto and being encased in an inelastic perforated casing, and using a stabilizing catheter having a plurality of selectively deployable extensions at one of thereof, the method comprising the steps of:
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introducing the sheathed graft via an introduction site for advancing the sheathed graft into position at a proximal part of the aortic tissue via one femoral artery; releasing the graft from the perforated casing; inserting a balloon occlusion catheter, having a selectively inflatable balloon, through the graft; selectively inflating the balloon to occlude the aorta; deploying the extensions of the stabilizing catheter at a proximal part of the graft to press the graft adjacent the aortic tissue to stabilize the graft at the aortic tissue; securing the graft to the aortic tissue; introducing a guide wire through the loop element into the femoral arteries and iliac arteries; and pulling a limb of the graft down iliac arteries and femoral arteries opposite the introduction site. - View Dependent Claims (12)
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Specification