Toroidal occlusion and molding balloons and methods of use
View Patent ↗Exemplary occlusion and molding devices and methods involve the use of an expandable balloon. Methods of sealing an aortic side branch in a patient can include advancing an occlusion device within the aorta, positioning a toroidal balloon of the occlusion device adjacent to the aortic side branch, and inflating the balloon to prevent peripheral blood flow from the aorta into the aortic side branch while a central aperture of the balloon allows descending aortic blood flow therethrough. Methods of molding a stent against an interior surface of a vessel of a patient can include advancing a molding device within the vessel, positioning a toroidal balloon of the molding device at least partially withing the stent, and inflating the balloon to exert force to the stent thus dilating the stent and molding it to the interior of the vessel while a central aperture of the balloon allows blood flow therethrough.
1 . A method of sealing an aortic side branch in an aorta of a patient using an occlusion device, comprising:
advancing the occlusion device within the aorta of the patient, the occlusion device having a toroidal balloon;
positioning the toroidal balloon of the occlusion device adjacent to the aortic side branch of the patient; and
inflating the toroidal balloon so that a side surface of the toroidal balloon prevents peripheral blood flow from the aorta into the aortic side branch while a central aperture of the toroidal balloon allows descending aortic blood flow therethrough,
wherein the occlusion device comprises a distal tether assembly coupled with the toroidal balloon, and the step of inflating the toroidal balloon comprises delivering fluid in a proximal direction through the distal tether assembly into the toroidal balloon.
2 . The method according to claim 1 , wherein the aortic side branch comprises a member selected from the group consisting of a mesenteric artery side branch, a renal artery side branch, a gonadal artery side branch, a celiac artery side branch, and an intercostal artery side branch.
3 . The method according to claim 1 , wherein the aortic side branch is located in a descending portion of the aorta of the patient.
4 . The method according to claim 1 , wherein the aortic side branch is located in an abdominal portion of the aorta of the patient.
5 . The method according to claim 1 , wherein the occlusion device further comprises a manifold cap coupled with the distal tether assembly, and the step of inflating the toroidal balloon further comprises delivering fluid through the manifold cap into the distal tether assembly.
6 . The method according to claim 5 , wherein the occlusion device further comprises a support shaft coupled with the manifold cap, and the step of inflating the toroidal balloon further comprises delivering fluid in a distal direction through the support shaft into the manifold cap.
7 . The method according to claim 1 , wherein the occlusion device further comprises a guidewire, and the step of advancing the occlusion device within the aorta of the patient further comprises advancing the toroidal balloon along the guidewire.
8 . The method according to claim 1 ,
wherein the occlusion device further comprises an elongate shaft, a proximal tether assembly having a first proximal tether and a second proximal tether, and the distal tether assembly having a first distal tether and a second distal tether,
wherein the first proximal tether is attached with the toroidal balloon at a first proximal attachment point and the second proximal tether is attached with the toroidal balloon at a second proximal attachment point opposite the first proximal attachment point,
wherein the first distal tether is attached with the toroidal balloon at a first distal attachment point and the second distal tether is attached with the toroidal balloon at a second distal attachment point opposite the first distal attachment point, and
wherein the method further comprises drawing the first distal attachment point and the second distal attachment point in a distal direction using the distal tether assembly or drawing the first proximal attachment point and the second proximal attachment point in a proximal direction using the proximal tether assembly so as to produce a four eared ring configuration in the toroidal balloon, and positioning the toroidal balloon within the elongate shaft when the toroidal balloon is in the four eared ring configuration.
9 . A method of sealing an aortic side branch in an aorta of a patient using an occlusion device, comprising:
advancing the occlusion device within the aorta of the patient, the occlusion device having a toroidal balloon;
positioning the toroidal balloon of the occlusion device adjacent to the aortic side branch of the patient; and
inflating the toroidal balloon so that a side surface of the toroidal balloon prevents peripheral blood flow from the aorta into the aortic side branch while a central aperture of the toroidal balloon allows descending aortic blood flow therethrough
wherein the occlusion device further comprises an elongate shaft, a proximal tether assembly having a first proximal tether and a second proximal tether, and a distal tether assembly having a first distal tether and a second distal tether,
wherein the first proximal tether is attached with the toroidal balloon at a first proximal attachment point and the second proximal tether is attached with the toroidal balloon at a second proximal attachment point opposite the first proximal attachment point,
wherein the first distal tether is attached with the toroidal balloon at a first distal attachment point and the second distal tether is attached with the toroidal balloon at a second distal attachment point opposite the first distal attachment point, and
wherein the method further comprises drawing the first distal attachment point and the second distal attachment point in a distal direction using the distal tether assembly or drawing the first proximal attachment point and the second proximal attachment point in a proximal direction using the proximal tether assembly so as to produce a four eared ring configuration in the toroidal balloon, and positioning the toroidal balloon within the elongate shaft when the toroidal balloon is in the four eared ring configuration.
10 . The method according to claim 9 , wherein the aortic side branch comprises a member selected from the group consisting of a mesenteric artery side branch, a renal artery side branch, a gonadal artery side branch, a celiac artery side branch, and an intercostal artery side branch.
11 . The method according to claim 9 , wherein the aortic side branch is located in a descending portion of the aorta of the patient.
12 . The method according to claim 9 , wherein the aortic side branch is located in an abdominal portion of the aorta of the patient.
13 . The method according to claim 9 , wherein the occlusion device comprises a proximal tether assembly coupled with the toroidal balloon, and the step of inflating the toroidal balloon comprises delivering fluid through the proximal tether assembly into the toroidal balloon.
14 . The method according to claim 9 , wherein the occlusion device further comprises a manifold cap coupled with the distal tether assembly, and the step of inflating the toroidal balloon further comprises delivering fluid through the manifold cap into the distal tether assembly.
15 . The method according to claim 14 , wherein the occlusion device further comprises a support shaft coupled with the manifold cap, and the step of inflating the toroidal balloon further comprises delivering fluid in a distal direction through the support shaft into the manifold cap.
16 . The method according to claim 9 , wherein the occlusion device further comprises a guidewire, and the step of advancing the occlusion device within the aorta of the patient further comprises advancing the toroidal balloon along the guidewire.