In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.

A concentric tube catheter for positioning a polymeric urethral stent implementing resistance heating to make the stent malleable for insertion into a urinary tract. An inflatable bladder is mounted to one end of the concentric tube catheter with the stent positioned around the inflatable bladder. The concentric tube catheter charged with a quantity of fluid. A static pressure control assembly and a variable pressure control assembly are in fluid connection with the concentric tube catheter. The quantity of fluid is pressurized within the concentric tube catheter with the static pressure control assembly in order to expand the inflatable bladder. A heating control system is used to increase the temperature of the stent allowing to become more malleable. The variable pressure control assembly oscillates the quantity of fluid to distribute heat evenly to the inflatable bladder and therefore to the stent. As the inflatable bladder expands, the malleable stent also expands.

[Object] It is an object of the present invention to provide a catheter for forming a biological tissue holding member by which a body lumen can be maintained in a dilated state even after a procedure of dilating a target part of the body lumen. [Solution] The catheter (100) for forming a biological tissue holding member includes: an elongated main body section (30) having a lumen (31 and 32) through which can flow a curable liquid substance that is cured in a living body; a first discharge section (10) through which the curable liquid substance supplied via the main body section is discharged in a filamentous form in a first direction intersecting the axial direction of the main body section; a second discharge section (20) which is disposed on the distal side along the longitudinal direction of the main body section as compared with the first discharge section and through which the curable liquid substance supplied via the main body section is discharged in a second direction intersecting both of the axial direction and the first direction; a first rotation driving unit (16) which rotates the first discharge section in a first rotation direction; and a second rotation driving unit (24) which rotates the second discharge section in a second rotation direction reverse to the first rotation direction.

[Object] It is an object of the present invention to provide a catheter for forming a biological tissue holding member by which a body lumen can be maintained in a dilated state even after a procedure of dilating a target part of the body lumen. [Solution] The catheter (100) for forming a biological tissue holding member includes: an elongated main body section (30) having a lumen (31 and 32) through which can flow a curable liquid substance that is cured in a living body; a first discharge section (10) through which the curable liquid substance supplied via the main body section is discharged in a filamentous form in a first direction intersecting the axial direction of the main body section; a second discharge section (20) which is disposed on the distal side along the longitudinal direction of the main body section as compared with the first discharge section and through which the curable liquid substance supplied via the main body section is discharged in a second direction intersecting both of the axial direction and the first direction; a first rotation driving unit (16) which rotates the first discharge section in a first rotation direction; and a second rotation driving unit (24) which rotates the second discharge section in a second rotation direction reverse to the first rotation direction.

An embodiment includes a process for treating an abdominal aortic aneurysm (AAA) endoleak with a shape memory polymer (SMP) foam device. First, a bifurcated stent graft is placed within the aneurysm while a micro guidewire is positioned within the aneurysm for future catheter access. Second, after placing the iliac graft extension, a catheter is introduced over wire to deliver embolic foams. Third, embolic foams expand and conform to the aneurysm wall. Fourth, embolic foams create a stable thrombus to prevent endoleak formation by isolating peripheral vessels from the aneurysm volume.

An embodiment includes a process for treating an abdominal aortic aneurysm (AAA) endoleak with a shape memory polymer (SMP) foam device. First, a bifurcated stent graft is placed within the aneurysm while a micro guidewire is positioned within the aneurysm for future catheter access. Second, after placing the iliac graft extension, a catheter is introduced over wire to deliver embolic foams. Third, embolic foams expand and conform to the aneurysm wall. Fourth, embolic foams create a stable thrombus to prevent endoleak formation by isolating peripheral vessels from the aneurysm volume.

Medical devices and methods are disclosed in the present application. In one illustrative example a medical device may comprise a catheter shaft extending from a proximal end to a distal end and the catheter shaft may include a plurality of catheter shaft lumens extending through at least a portion of the catheter shaft. The device may further include a first balloon member defining a first lumen in fluid communication with a first one of the plurality of catheter shaft lumens and a second balloon member defining a second lumen in fluid communication with a second one of the plurality of catheter shaft lumens. In some embodiments, the second balloon member may be disposed around the first balloon member and comprise a plurality of ports and a first raised portion and a second raised portion.

Medical devices and methods are disclosed in the present application. In one illustrative example a medical device may comprise a catheter shaft extending from a proximal end to a distal end and the catheter shaft may include a plurality of catheter shaft lumens extending through at least a portion of the catheter shaft. The device may further include a first balloon member defining a first lumen in fluid communication with a first one of the plurality of catheter shaft lumens and a second balloon member defining a second lumen in fluid communication with a second one of the plurality of catheter shaft lumens. In some embodiments, the second balloon member may be disposed around the first balloon member and comprise a plurality of ports and a first raised portion and a second raised portion.

An embodiment includes a process for treating an abdominal aortic aneurysm (AAA) endoleak with a shape memory polymer (SMP) foam device. First, a bifurcated stent graft is placed within the aneurysm while a micro guidewire is positioned within the aneurysm for future catheter access. Second, after placing the iliac graft extension, a catheter is introduced over wire to deliver embolic foams. Third, embolic foams expand and conform to the aneurysm wall. Fourth, embolic foams create a stable thrombus to prevent endoleak formation by isolating peripheral vessels from the aneurysm volume.

An embodiment includes a process for treating an abdominal aortic aneurysm (AAA) endoleak with a shape memory polymer (SMP) foam device. First, a bifurcated stent graft is placed within the aneurysm while a micro guidewire is positioned within the aneurysm for future catheter access. Second, after placing the iliac graft extension, a catheter is introduced over wire to deliver embolic foams. Third, embolic foams expand and conform to the aneurysm wall. Fourth, embolic foams create a stable thrombus to prevent endoleak formation by isolating peripheral vessels from the aneurysm volume.