Inflation and deflation of obstruction device

1. An assembly comprising:

an obstruction device comprising a proximal obstruction balloon and a distal obstruction balloon mounted on a shaft, said balloons being inflatable via an inflation lumen; and

a delivery system that comprises an insertion tool and an injection site assembly assembled with one of said balloons, said insertion tool comprising a connector which is connectable to said injection site assembly and which permits passing tools and injection fluid therethrough, wherein said insertion tool comprises a shaft that has a hollow lumen; and

wherein said connector comprises a plurality of resilient fingers insertable into said injection site assembly and the assembly further comprises an inflation tube that passes through said hollow lumen and presses said fingers against inner surfaces of said injection site assembly; and

wherein said injection site assembly comprises a proximal insertion port and a distal receiving member and wherein said proximal insertion port is narrower than said distal receiving member, and wherein said connector has an operative configuration wherein said resilient fingers are inserted into and through said proximal insertion port, and after passing through said proximal insertion port, said fingers expand outwards into a space of said distal receiving member.

2. The assembly according to claim 1 , wherein said injection site assembly comprises a proximal septum, which serves as a proximal injection site, and a distal septum, which serves as a distal injection site and which is axially spaced from said proximal injection site.

3. The assembly according to claim 1 , wherein said inflation lumen extends through said shaft of said obstruction device and is in fluid communication with one or more proximal inflation ports for inflation of said proximal balloon and with one or more distal inflation ports for inflation of said distal balloon.

4. The obstruction device according to claim 1 , wherein a neck portion of said shaft comprises a gap between said proximal obstruction balloon and said distal obstruction balloon.

5. The obstruction device according to claim 1 , wherein said injection site assembly comprises a deflation mechanism operative to deflate said balloons.

6. The obstruction device according to claim 5 , wherein said inflation lumen is in fluid communication with one or more proximal inflation ports for inflation of said proximal balloon and with one or more distal inflation ports for inflation of said distal balloon, and wherein said deflation mechanism comprises a deflation lumen formed in said injection site assembly, which is in fluid communication with said distal inflation port and with said proximal inflation port, and wherein a stopper is arranged to be sealingly seated in said proximal inflation port to seal fluid from leaking out of said balloons and to be moved away from said proximal inflation port to permit evacuating fluid from said balloons.

7. A method comprising:

using an obstruction device comprising a proximal obstruction balloon and a distal obstruction balloon mounted on a shaft, said balloons being inflatable via an inflation lumen, and a delivery system that comprises an insertion tool and an injection site assembly assembled with one of said balloons, said insertion tool comprising a connector which is connectable to said injection site assembly and which permits passing tools and injection fluid therethrough, wherein said insertion tool comprises a shaft that has a hollow lumen, wherein said connector comprises a plurality of resilient fingers insertable into said injection site assembly, and wherein said injection site assembly comprises a proximal insertion port and a distal receiving member, said proximal insertion port being narrower than said distal receiving member;

passing an inflation tube through said hollow lumen so that said resilient fingers are inserted into and through said proximal insertion port, and after passing through said proximal insertion port, said fingers expand outwards into a space of said distal receiving member.