Back to results
US 12,653,990 B2Granted
Intravascular catheter having a single through lumen and a separate, independent, removable fluid conduit device assemblable therein
AssigneeNeuravi Limited
InventorRichard Conlon
Life of this patent
Estimating the term…
Abstract
An assemblable device including an intravascular catheter with a catheter shaft having an outer wall defining a single through lumen from a proximal end to an opposite distal end; proximate the distal end a portion of the outer wall of the catheter shaft is a membrane valve with an opening defined therein. The catheter shaft is devoid, free of, and has no dedicated fluid/inflation lumen. Instead, a separate, independent, removable fluid conduit device having a fluid lumen defined therein is assemblable so as to be slidable in the single through lumen of the intravascular catheter.
Claims6
An assemblable device comprising:
- an intravascular catheter including a catheter shaft having an outer wall defining a single through lumen from a proximal end to an opposite distal end;
- proximate the distal end a portion of the outer wall of the catheter shaft is a membrane valve with an opening defined therein;
- and
- a separate, independent, removable fluid conduit device having a fluid lumen defined therein;
- the separate, independent, removable fluid conduit device is assemblable so as to be slidable in the single through lumen of the intravascular catheter,
- wherein the separate, independent, removable fluid conduit device comprises:
- a shaft member having a passageway defined therein from a proximal end to an opposite distal end;
- the shaft member further including a tapered inner diameter distal section and an open channel extending in a longitudinal direction defined along an outer wall of the shaft member from the proximal end to the tapered inner diameter distal section;
- an extendable fluid lumen having a tapered outer diameter distal section;
- the extendable fluid lumen being slidable within the passageway of the shaft member between a first state in which the tapered outer diameter distal section of the extendable fluid lumen is entirely sheathed within the passageway of the shaft member and a second state in which the tapered outer diameter distal section of the extendable fluid lumen is completely unsheathed from the shaft member;
- wherein the tapered outer diameter distal section of the extendable fluid lumen bends or curves in the second state;
- wherein the intravascular catheter has associated therewith a first alignment marker and the shaft member of the separate, independent, removable fluid conduit device has associated therewith a second alignment marker;
- wherein the arrangement of the first and second alignment markers is such that in a state of proper alignment both longitudinally and radially of the shaft member of the separate, independent, removable fluid conduit device in the single through lumen of the intravascular catheter, the distal tip of the tapered outer diameter distal section of the extendable fluid lumen directly physically engages the opening in the membrane valve when positioned in the second state, and
- wherein the first alignment marker is a partial radial band extending less than 360 radially about the intravascular catheter and the second alignment marker is a complementary partial radial band extending less than 360 degrees radially about the shaft member of the separate, independent, removable fluid conduit device;
- and in the state of proper alignment the first and second alignment markers together form a 360° radial band.
12 more elements
A method for using an assemblable device comprising a balloon guide catheter including a catheter shaft having an outer wall defining a single through lumen from a proximal end to an opposite distal end;
- proximate the distal end a portion of the outer wall of the catheter shaft is a membrane valve with an opening defined therein;
- the membrane valve being covered by a balloon secured to an outer surface of the outer wall of the catheter shaft;
- the assemblable device further including a separate, independent, removable fluid conduit device having a fluid lumen defined therein;
- the separate, independent, removable fluid conduit device is assemblable so as to be slidable in the single through lumen of the balloon guide catheter;
- the method comprising the steps of:
- navigating the balloon guide catheter to a position proximal a target occlusion;
- inserting the separate, independent, removable fluid conduit device into the single through lumen of the balloon guide catheter;
- wherein before and/or after insertion into the balloon guide catheter the separate, independent, removable fluid conduit device is prepped to purge residual air from the fluid lumen;
- properly aligning the separate, independent, removable fluid conduit device within the balloon guide catheter;
- injecting the inflation media via the fluid lumen, through the opening of the membrane valve and into the balloon;
- and
- withdrawing the separate, independent, removable fluid conduit device, wherein the shaft member of the separate, independent, removable fluid conduit device has a passageway defined therein from a proximal end to an opposite distal end;
- the shaft member further including a tapered inner diameter distal section and a single open channel extending in a longitudinal direction defined along the outer wall of the shaft member from the proximal end to the tapered inner diameter distal section trackable over a microcatheter;
- and the separate, independent, removable fluid conduit device further comprises an extendable fluid lumen having a tapered outer diameter distal section;
- the extendable fluid lumen being slidable within the passageway of the shaft member between a first state in which the tapered outer diameter distal section of the extendable fluid lumen is entirely sheathed within the passageway of the shaft member and a second state in which the tapered outer diameter distal section of the extendable fluid lumen is completely unsheathed from the shaft member;
- wherein the tapered inner diameter distal section of the shaft member is sized to deflect the tapered outer diameter distal section of the extendable fluid lumen when advanced therethrough in a distal direction;
- and
- wherein the balloon guide catheter has associated therewith a first alignment marker and the shaft member of the separate, independent, removable fluid conduit device has associated therewith a second alignment marker;
- wherein the proper aligning step comprises in a state of proper alignment both longitudinally and radially of the first and second alignment markers, a distal tip of the tapered outer diameter distal section of the extendable fluid lumen directly physically engages the opening in the membrane valve when positioned in the second state, and
- wherein the first alignment marker is a partial radial band extending less than 360° radially about the balloon guide catheter and the second alignment marker is a complementary partial radial band extending less than 360 degrees radially about the shaft member of the separate, independent, removable fluid conduit device;
- and in the state of proper alignment the first and second alignment markers together form a 360° radial band.
18 more elements
A method for using an assemblable device comprising an intravascular catheter including a catheter shaft having an outer wall defining a single through lumen from a proximal end to an opposite distal end;
- proximate the distal end a portion of the outer wall of the catheter shaft is a membrane valve with an opening defined therein;
- the assemblable device further including a separate, independent, removable fluid conduit device having a fluid lumen defined therein;
- the separate, independent, removable fluid conduit device is assemblable so as to be slidable in the single through lumen of the intravascular catheter;
- the method comprising the steps of:
- navigating the intravascular catheter to a target site;
- inserting the separate, independent, removable fluid conduit device into the single through lumen of the intravascular catheter;
- properly aligning the separate, independent, removable fluid conduit device within the intravascular catheter;
- injecting the fluid media via the fluid lumen, through the opening of the membrane valve;
- and
- withdrawing the separate, independent, removable fluid conduit device,
- wherein the shaft member of the separate, independent, removable fluid conduit device has a passageway defined therein from a proximal end to an opposite distal end;
- the shaft member further including a tapered inner diameter distal section and a single open channel extending in a longitudinal direction defined along the outer wall of the shaft member from the proximal end to the tapered inner diameter distal section trackable over a microcatheter;
- and the separate, independent, removable fluid conduit device further comprises an extendable fluid lumen having a tapered outer diameter distal section;
- the extendable fluid lumen being slidable within the passageway of the shaft member between a first state in which the tapered outer diameter distal section of the extendable fluid lumen is entirely sheathed within the passageway of the shaft member and a second state in which the tapered outer diameter distal section of the extendable fluid lumen is completely unsheathed from the shaft member;
- wherein the tapered inner diameter distal section of the shaft member is sized to deflect the tapered outer diameter distal section of the extendable fluid lumen when advanced therethrough in a distal direction;
- and
- wherein the balloon guide catheter has associated therewith a first alignment marker and the shaft member of the separate, independent, removable fluid conduit device has associated therewith a second alignment marker;
- wherein the proper aligning step comprises in a state of proper alignment both longitudinally and radially of the first and second alignment markers, a distal tip of the tapered outer diameter distal section of the extendable fluid lumen directly physically engages the opening in the membrane valve when positioned in the second state, and
- wherein the first alignment marker is a partial radial band extending less than 360° radially about the balloon guide catheter and the second alignment marker is a complementary partial radial band extending less than 360 degrees radially about the shaft member of the separate, independent, removable fluid conduit device;
- and in the state of proper alignment the first and second alignment markers together form a 360° radial band.
17 more elements
Dependencies are inferred from the claim text.