Liquid seal assembly for a rotating torque tube
First Claim
1. An assembly for creating a liquid seal in a medical device, the assembly comprising:
- a liner wrapped around a rotatable torque tube to form a flood space there within, the liner extending longitudinally along at least a portion of the torque tube, and a sealing member with an infusion port for infusing a sufficient amount of liquid in the flood space to create a seal around the torque tube.
7 Assignments
0 Petitions
Accused Products
Abstract
A sealing assembly hinders or prevents air or other fluid from seeping between various components of a medical device by use of a liquid seal. An infusion port is for introducing a sealing liquid to immerse a flood space between a liner that surrounds a torque tube and/or within the torque tube, thereby creating a liquid seal around the torque tube and lubricating the torque tube. The length of the liner and the cross sectional space of the flood space are adjusted to control flow rate. An aspiration port may force suction pressure into a lumen extending along the length of the medical device in a distal direction. The liquid seal also prevents diluting of the suction pressure by stopping ingress of air.
-
Citations
17 Claims
-
1. An assembly for creating a liquid seal in a medical device, the assembly comprising:
-
a liner wrapped around a rotatable torque tube to form a flood space there within, the liner extending longitudinally along at least a portion of the torque tube, and a sealing member with an infusion port for infusing a sufficient amount of liquid in the flood space to create a seal around the torque tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An assembly for creating a liquid seal in a medical device, the assembly comprising:
-
a liner wrapped around a rotatable torque tube to form a flood space there within, the liner extending longitudinally along at least a portion of the torque tube, and a sealing member comprising;
an infusion port for infusing a sufficient amount of liquid between the torque tube and the liner to create a seal around the torque tube, and a suction port for aspirating fluid from a lumen extending within a catheter enclosing the liner, wherein the liner separates adjacent pressure outside or proximal to the flood space from pressure in the flood space. - View Dependent Claims (13, 14)
-
-
15. A medical device comprising:
-
a rotatable torque tube;
a catheter enclosing at least a portion of the torque tube; and
a sealing assembly comprising;
a liner wrapped around a rotatable torque tube to form a flood space there within, the liner extending longitudinally along at least a portion of the torque tube, and a sealing member with an infusion port for infusing a sufficient amount of liquid in the flood space to create a seal around the torque tube. - View Dependent Claims (16, 17)
-
Specification