ELONGATED TUBING FOR A ROTATING HEMOSTATIC VALVE
An elongated tubing for use in a permissive seal assembly. The elongated tubing includes a proximal end, a distal end, and a widened central segment. A conformable path extends between the proximal and distal end, and a rigidified path extends between the proximal end and the distal end.
1 . An elongated tubing for use in a permissive seal assembly, the elongated tubing comprising:
a proximal end, a distal end, and a widened central segment;
a conformable path extending between the proximal and distal end; and
a rigidified path extending between the proximal end and the distal end.
2 . The elongated tubing of claim 1 , wherein the elongated tubing is formed of compressible material.
3 . The elongated tubing of claim 1 , wherein the widened central segment is detachable from the elongated tubing.
4 . The elongated tubing of claim 1 , wherein an axial length of the widened central segment is from 20% to 40% of the axial length of the elongated tubing.
5 . The elongated tubing of claim 1 , wherein a diameter of the rigidified path is from 35% to 55% of an outer diameter of the widened central segment.
6 . The elongated tubing of claim 1 , wherein a diameter of the rigidified path is from 0.5 mm to 1.5 mm.
7 . The elongated tubing of claim 1 , wherein the rigidified path comprises an inner surface material, the inner surface material having a higher durometer than a durometer of a material adjacent to the inner surface material.
8 . The elongated tubing of claim 7 , wherein the rigidified path comprises a rigid inner surface liner formed of the inner surface material.
9 . The elongated tubing of claim 1 , wherein an inner surface of the rigidified path has a higher lubricity as compared to at least one other surface of the elongated tubing.
10 . The elongated tubing of claim 1 , further comprising two or more conformable paths.
11 . The elongated tubing of claim 10 , wherein the rigidified path extends through a center of the elongated tubing and the two or more conformable paths are circumferentially spaced around the rigidified path.
12 . The elongated tubing of claim 1 , further comprising a widened proximal segment.
13 . A permissive seal assembly comprising a fully open configuration and a partially closed configuration:
a rigid housing;
a rigid compression mechanism; and
a compressible elongated tubing comprising a widened central segment, a conformable path extending through the elongated tubing, and a rigidified path extending through the elongated tubing;
wherein the elongated tubing extends through a central channel defined by the compression mechanism and the housing;
wherein radial compression of the compressible elongated tubing by the compression mechanism transitions the permissive seal assembly from the fully open configuration to the partially closed configuration; and
wherein movement from the fully open to the partially closed configuration substantially closes the conformable path but leaves the rigidified path substantially open.
14 . The permissive seal assembly of claim 13 , wherein the compression mechanism nests within the housing.
15 . The permissive seal assembly of claim 13 , wherein the compression mechanism comprises at least one set of threads.
16 . The permissive seal assembly of claim 13 , wherein the widened central segment is shaped to fit snugly within an enclosed space bounded at one end by the compression mechanism and at another end by the housing.
17 . The permissive seal assembly of claim 16 , wherein the enclosed space is axially longer in the open configuration than in the partially closed configuration.
18 . The permissive seal assembly of claim 13 , wherein a widened proximal segment of the elongated tubing extends beyond a proximal end of the central channel.
19 . A method of partially sealing a channel, the method comprising:
passing a guidewire through a conformable path of an elongated tubing, the elongated tubing extending through the channel;
passing a tool through a rigidified path of the elongated tubing;
axially compressing a gasket or conformably single-lumen tubing;
translating axial compression of the gasket or conformably single-lumen tubing to inward radial compression on the elongated tubing;
substantially closing the conformable path to partially seal the channel, thereby restricting movement of the guidewire through the channel; and
axially sliding the tool through the rigidified path while the conformable path remains substantially closed around the guidewire.
20 . The method of claim 19 , wherein axially compressing the gasket or conformably single-lumen tubing comprises rotating a screw of a compression mechanism.
21 . The method of claim 19 , wherein translating axial compression to inward radial compression comprises axially compressing a widened central segment of the elongated tubing in an enclosed and shrinking space.