MULTICHAMBERED DEVICE PORT AND BRAIDED SHEATH FOR A BALLOON CARDIOVASCULAR INSERTION DEVICE
A cardiovascular insertion device to achieve safe, accurate and effective access to tissue, such as coronary, cardiac and peripheral vascular structures. The cardiovascular insertion device includes a multichambered device port on its proximal end and a positioning balloon on its distal end with a sheath defining a sheath lumen therebetween. The multichambered device port including a plurality of hermetically sealed chambers. The sheath includes an inner layer, a braid layer, and an outer layer. A balloon lumen and pull wire lumen extend within the braid layer.
1 . A cardiovascular insertion device, the device comprising:
a body having a proximal end and a distal end;
a multichambered device port at the proximal;
a positioning balloon at the distal end; and
a sheath extending between said proximal and distal ends and defining a sheath lumen;
wherein the multichambered device port includes:
a first chamber in fluid communication with the positioning balloon, and
a second chamber in fluid communication with the sheath lumen.
2 . The cardiovascular insertion device of claim 1 , wherein:
the first chamber and the second chamber are hermetically sealed from each other.
3 . The cardiovascular insertion device of claim 1 , further comprising:
a balloon lumen extending within a sidewall of the sheath from the first chamber to the balloon.
4 . The cardiovascular insertion device of claim 3 , wherein:
a proximal end of the balloon lumen includes an opening to the first chamber.
5 . The cardiovascular insertion device of claim 3 , wherein:
a distal end of the balloon lumen includes an opening to the balloon.
6 . The cardiovascular insertion device of claim 1 , further comprising:
a housing of the multichambered device port surrounding the first and second chambers;
a first access port through the housing in selectable fluid communication with the first chamber and configured to provide fluid to the balloon.
7 . The cardiovascular insertion device of claim 6 , further comprising:
a second access port through the housing in selectable fluid communication with the second chamber and configured to provide fluid to the sheath lumen.
8 . The cardiovascular insertion device of claim 6 , further comprising:
a main body of the multichambered device port within a central cavity of the housing, wherein the main body and the housing define the first and second chambers.
9 . The cardiovascular insertion device of claim 8 , further comprising:
a port within the main body that couples the second chamber in fluid communication with the sheath lumen.
10 . The cardiovascular insertion device of claim 6 , further comprising;
an aperture in a proximal end of the housing; and
a hemostatic valve configured to provide access to the sheath lumen via the aperture.
11 . The cardiovascular insertion device of claim 1 , further comprising;
a handle between the multichambered device port and the distal end,
wherein the sheath extends though the handle to the multichambered device port.
12 . The cardiovascular insertion device of claim 11 , wherein:
the handle includes a proximal end and a distal end, the proximal end rotatable with respect to the distal end.
13 . The cardiovascular insertion device of claim 11 , wherein:
the handle includes:
a shell having threads that engage with outer threads of a nut; and
an inner bolt having threads that engage with inner threads of the nut.
14 . The cardiovascular insertion device of claim 13 , wherein:
the nut includes an outer nut having the outer threads of the nut and an inner nut having the inner threads of the nut.
15 . The cardiovascular insertion device of claim 14 , wherein:
the inner nut and outer nut are slidingly engaged with each other.
16 . The cardiovascular insertion device of claim 15 , wherein:
the inner nut is coupled to a proximal end of a first wire, the distal end of the first wire being coupled to the distal end of the sheath at a first location, and
the outer nut is coupled to a proximal end of a second wire, the distal end of the first wire being coupled to the distal end of the sheath at a second location.
17 . The cardiovascular insertion device of claim 16 , wherein:
rotation of the proximal end of the handle in a first direction with respect to the distal end of the handle causes the inner nut and outer nut to move along a longitudinal axis of the handle relative to each other to pull on a first one of the first wire and the second wire to cause the distal end of the sheath to bend in a first direction.
18 . The cardiovascular insertion device of claim 17 , wherein:
rotation of the proximal end of the handle in a second direction, opposite the first direction, with respect to the distal end of the handle causes the inner nut and outer nut to move along the longitudinal axis of the handle relative to each other to pull on a second one of the first wire and the second wire to cause the distal end of the sheath to bend in a second direction, opposite the first direction.
19 . The cardiovascular insertion device of claim 17 , wherein:
the distal end of the sheath bends at least 180 degrees.
20 . The cardiovascular insertion device of claim 17 , wherein:
the distal end of the sheath bends at least 270 degrees.