Method and devices for flow occlusion during device exchanges
First Claim
1. A device for use during an intravascular procedure, the device having a valve for closing and opening fluid flow through a lumen of the device, the device comprising:
- an elongate body having a proximal end, a distal end and a lumen extending longitudinally through at least part of the elongate body, the elongate body comprising;
a proximal portion; and
a flexible distal portion;
a sealing member having an inner diameter and an outer diameter positioned in the lumen of the elongate body at the proximal portion of the elongate body;
a piston assembly for insertion into the lumen of the elongate body at the proximal end, the piston assembly having a handle with an integral piston, the piston extending through the inner diameter of the sealing member when the valve is in a closed state and the piston retracted axially from the inner diameter of the sealing member in a proximal direction when the valve is in an open state;
a frictional element connected to an outer diameter of the piston, wherein the frictional element is larger than an inner diameter of the lumen in a relaxed state and partially collapses into a collapsed state upon placement in the lumen, wherein the frictional element pushes against the inner diameter of the elongate body to provide friction upon axial movement of the piston within the lumen; and
an inflatable balloon attached to the elongate body and in communication with the lumen, wherein the device allows fluid to be advanced through the lumen of the elongate body and through the inner diameter of the sealing member to inflate and deflate the inflatable balloon when the valve is in the open state.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of reducing the risk of clinical sequelae to catheter induced vascular injuries may include introducing a guide wire into a vascular sheath residing in a blood vessel, proximally retracting the vascular sheath while leaving the wire in place, and observing indicia of the presence or absence of a vascular injury caused to the blood vessel by the vascular sheath or a procedural catheter previously advanced through the vascular sheath. If indicia of a vascular injury are observed, the method may further involve proximally retracting the guide wire to position the inflatable balloon adjacent the injury and inflating the balloon to reduce blood flow past the injury, while leaving the guide wire in place to provide subsequent access to the injury. The inflatable balloon can be inflated and deflated through a valve positioned at the proximal end of the guide wire.
113 Citations
30 Claims
-
1. A device for use during an intravascular procedure, the device having a valve for closing and opening fluid flow through a lumen of the device, the device comprising:
-
an elongate body having a proximal end, a distal end and a lumen extending longitudinally through at least part of the elongate body, the elongate body comprising; a proximal portion; and a flexible distal portion; a sealing member having an inner diameter and an outer diameter positioned in the lumen of the elongate body at the proximal portion of the elongate body; a piston assembly for insertion into the lumen of the elongate body at the proximal end, the piston assembly having a handle with an integral piston, the piston extending through the inner diameter of the sealing member when the valve is in a closed state and the piston retracted axially from the inner diameter of the sealing member in a proximal direction when the valve is in an open state; a frictional element connected to an outer diameter of the piston, wherein the frictional element is larger than an inner diameter of the lumen in a relaxed state and partially collapses into a collapsed state upon placement in the lumen, wherein the frictional element pushes against the inner diameter of the elongate body to provide friction upon axial movement of the piston within the lumen; and an inflatable balloon attached to the elongate body and in communication with the lumen, wherein the device allows fluid to be advanced through the lumen of the elongate body and through the inner diameter of the sealing member to inflate and deflate the inflatable balloon when the valve is in the open state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. A vascular guide wire system, comprising:
-
an elongate body comprising a proximal portion, a flexible distal portion, and a lumen extending longitudinally through at least part of the elongate body; an inflatable balloon attached to the elongate body and in communication with the lumen; a valve assembly having an open position for inflating and deflating the inflatable balloon and a closed position for maintaining fluid within the lumen, the valve assembly comprising; a sealing member on the proximal portion of the elongate body, the sealing member having an inner diameter and an outer diameter, the outer diameter sized smaller than an inner diameter of the lumen; a piston assembly for insertion into the lumen of the elongate body, the piston assembly having a handle, an integral piston portion, the piston portion configured for insertion into the inner diameter of the sealing member to provide the closed position of the valve assembly and further having a frictional element attached to an outer diameter of the piston portion, wherein the frictional element is larger than an inner diameter of the lumen in a relaxed state and partially-collapses into a collapsed state upon placement in the lumen, wherein the frictional element pushes against the inner diameter of the elongate body to provide friction upon axial movement of the piston within the lumen; a proximal collar and a distal collar placed on either side of the sealing member inside of the lumen to maintain the sealing member in position; and a first indentation formed on the elongate body proximal to the proximal collar and a second indentation formed on the elongate body distal to the distal collar. - View Dependent Claims (25, 26, 27, 28, 29, 30)
-
Specification