Devices and methods for preparing a valve for a transcatheter valve replacement procedure
The disclosure includes methods, systems and devices for severing and optionally removing at least a portion of heart valve leaflets. Leaflets can be partially removed or entirely removed or otherwise, the leaflets can be severed or splayed in such a way as to avoid coronary blockage, LVOT obstruction, or access challenges in procedures where a prosthetic valve is to be implanted within a previously implanted prosthetic valve. The disclosure also relate to numerous devices for and methods of disabling one or more valve ligating devices to provide an unobstructed valve opening so that a prosthetic heart valve can be implanted within the opening. The ligation device(s) is disabled either by removing the ligation device(s) or severing one leaflet so that ligated leaflets can be separated. In some embodiments, the ligation device(s) are severed to disable the ligation device(s).
1 . A system comprising:
a positioning device configured to align a puncturing element in front of a coronary ostium, the positioning device including:
a positioning catheter having a distal end;
a positioning balloon including a first segment and a second segment positioned proximal to the distal end of the positioning catheter and on opposing sides of the positioning catheter, wherein the first and second segments have a deflated state and an inflated state; and
a frame positioned over the positioning catheter and supporting the positioning balloon.
2 . The system of claim 1 , wherein the positioning balloon has an irregular shape in the inflated state.
3 . The system of claim 1 , wherein the first and second segments are separated by a strip of adhesive.
4 . The system of claim 3 , wherein the strip of adhesive is positioned at opposite quadrants at the distal end of the positioning catheter.
5 . The system of claim 1 , wherein the positioning catheter includes a first lumen fluidly connected to the first segment and a second lumen fluidly connected to the second segment.
6 . The system of claim 1 , wherein, in the inflated state, the first segment is smaller than the second segment.
7 . The system of claim 1 , further comprising a valve preparation device at least partially positioned within the positioning catheter; wherein the valve preparation device is configured to remove at least a portion of valve leaflets.
8 . The system of claim 7 , wherein the valve preparation device includes at least one of either an electrode or a blade.
9 . The system of claim 7 , wherein the valve preparation device can be delivered through the positioning catheter.
10 . A system comprising:
a positioning device configured to align a puncturing element in front of a coronary ostium, the positioning device including:
a positioning catheter having a distal end; and
a positioning balloon including a first segment and a second segment positioned proximal to the distal end of the positioning catheter and on opposing sides of the positioning catheter, wherein the first and second segments have a deflated state and an inflated state, the second segment configured to achieve a greater internal volume than the first segment when both the first segment and the second segment are fully expanded in the inflated state.
11 . The system of claim 10 , wherein the positioning balloon comprises an irregular shape in the inflated state.
12 . The system of claim 11 , wherein the irregular shape comprises a kidney shape defined by an outer surface profile of the first segment and the second segment.
13 . The system of claim 10 , wherein the first and second segments are separated by a strip of adhesive.
14 . The system of claim 13 , wherein the strip of adhesive is positioned at opposite quadrants at the distal end of the positioning catheter.
15 . The system of claim 10 , wherein the positioning catheter includes a first lumen fluidly connected to the first segment and a second lumen fluidly connected to the second segment.
16 . The system of claim 10 , further comprising a frame positioned over the positioning catheter and supporting the positioning balloon.
17 . The system of claim 10 , further comprising a valve preparation device at least partially positioned within the positioning catheter; wherein the valve preparation device is configured to remove at least a portion of valve leaflets.
18 . The system of claim 17 , wherein the valve preparation device includes at least one of either an electrode or a blade.
19 . The system of claim 17 , wherein the valve preparation device can be delivered through the positioning catheter.
20 . The system of claim 10 , wherein the first segment and the second segment define a single positioning balloon.