Expandable member for perforation occlusion
View Patent ↗Lead extraction is the removal of one or more leads from inside the heart utilizing a lead removal catheter having a tubular sheath that is placed in the blood vessel, either subclavian or femoral. The sheath of the lead removal catheter may accidentally tear or perforate the blood vessel as it is advanced over the lead toward the heart. Such an occurrence must be dealt with quickly to prevent harm to the patient or subject. An expandable member, such as a balloon, attached to the exterior of the sheath of a lead removal catheter can be deployed temporarily adjacent the perforation in the vessel wall. Inflation of the balloon not only stops (or substantially stops) the bleeding, but, upon inflation, the balloon may include one or more channels that allow blood to continue to flow through the channel(s) until the blood vessel perforation can be repaired.
1. A method for occluding an opening in a patient's vascular system, the method comprising:
(a) advancing a sheath comprising a lumen and an expandable member in a blood vessel until the expandable member is positioned at least substantially adjacent an opening in the blood vessel; and
(b) expanding the expandable member, thereby at least substantially occluding the opening in the blood vessel;
(c) positioning the sheath over a lead, wherein the lead is disposed within the lumen, prior to the advancing step (a); and
(d) advancing the sheath over the lead in the blood vessel, wherein the lead is disposed within the lumen;
wherein the steps (a) through (d) are performed in the course of a lead removal procedure, wherein the lead is or was attached to one of a pacemaker and defibrillator.
2. The method of claim 1 , wherein the expandable member is an inflatable balloon.
3. The method of claim 1 , further comprising:
forming a channel bounded by an inner surface of the expandable member and an outer surface of the sheath such that blood may flow from a first side to a second side of the expandable member.
4. The method of claim 1 , wherein the opening in the blood vessel is a perforation and wherein the step (a) further comprises the step of:
using fluoroscopy to detect the perforation.
5. The method of claim 1 , wherein the expandable member comprises and/or releases a coagulant to facilitate blood clotting in the opening in the blood vessel.