Balloon catheter for occluding aneurysms of branch vessels
First Claim
1. A method of forming an occluding cast through a vessel opening in the side wall of a main blood vessel for occluding a peripheral vessel or aneurysm outside of the opening without occluding the main vessel, comprising the steps of:
- sealing the main vessel lumen and side walls from the vessel opening into the aneurysm or peripheral vessel to thereby shield the main vessel wall adjacent to the vessel openings;
delivering an occluding agent through the vessel opening into the aneurysm chamber or peripheral vessel; and
maintaining the seal until occlusion is effected or the occluding agent is stabilized, whereby an occluding cast is formed by or about the occluding agent within the aneurysm or peripheral vessel and seals the vessel opening without occluding the main vessel.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for delivering occluding agents through an opening in a blood vessel wall and into an aneurysm chamber or a branch vessel by introducing a balloon catheter, inflating the balloon to seal the blood vessel lumen around the vessel opening, and delivering the occluding agent through the opening. The inflation of the balloon positions an exit port laterally in the vessel in alignment with the vessel opening for delivering of the occluding agent therethrough. In one embodiment, the balloon encircles the distal end segment of the catheter body, and the delivery exit port is supported on the inflated surface of the balloon. In a second embodiment, the balloon is formed and extends around a major circumferential section of the distal end segment, and the delivery exit port is formed in the remaining minor circumferential section for lateral movement into alignment with the vessel opening as the balloon fills the blood vessel on inflation. The inflated balloon maintains the occluding agent therein until it forms an occluding cast, and the balloon wall shapes the occluding cast into conformance with the blood vessel lumen. The catheter body is formed with lumens for balloon inflation/deflation, the passage over a guide wire, the delivery of the occluding agent and the venting during delivery or aspiration prior to delivery. More than one delivery exit port and associated lumen may be provided for venting during delivery and/or for the delivery of a two component occluding agent. The catheter body and the balloon are preferably formed integrally of coaxial tubes with delivery/venting lumens formed in the outer tube and a common inner lumen for inflation/deflation of the balloon, terminating in a self sealing distal valve for receiving the guide wire. Liquid occluding agents or mechanical thrombus forming devices my be delivered thereby into the aneurysm chamber or branch vessel to occlude it.
331 Citations
43 Claims
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1. A method of forming an occluding cast through a vessel opening in the side wall of a main blood vessel for occluding a peripheral vessel or aneurysm outside of the opening without occluding the main vessel, comprising the steps of:
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sealing the main vessel lumen and side walls from the vessel opening into the aneurysm or peripheral vessel to thereby shield the main vessel wall adjacent to the vessel openings; delivering an occluding agent through the vessel opening into the aneurysm chamber or peripheral vessel; and maintaining the seal until occlusion is effected or the occluding agent is stabilized, whereby an occluding cast is formed by or about the occluding agent within the aneurysm or peripheral vessel and seals the vessel opening without occluding the main vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Apparatus for forming an occluding cast through a vessel opening in the side wall of a main blood vessel for occluding a peripheral vessel or aneurysm chamber outside of the vessel opening without occluding the vessel lumen comprising:
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means positionable within the main vessel lumen for temporarily sealing the main vessel side wall and vessel lumen from the vessel opening into the aneurysm or peripheral vessel to thereby shield the main vessel wall adjacent to the vessel opening; means for delivering an occluding agent through the vessel opening leading to the aneurysm chamber or peripheral vessel; and means for maintaining the sealing of the main vessel wall and vessel lumen until occlusion is effected or the occluding agent is stabilized, whereby an occluding cast is formed by or about the occluding agent within the aneurysm chamber or peripheral vessel and seals the vessel opening without occluding the main vessel. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A balloon catheter for delivering an occluding agent in situ into a vessel opening in the side wall of a main blood vessel and for forming an occluding cast in situ for occluding a peripheral, branch blood vessel or aneurysm chamber distal to the vessel opening without occluding the main blood vessel lumen comprising:
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an elongated catheter body having a proximal end segment and a distal end segment adapted to be introduced into the main blood vessel lumen in relation to the vessel opening leading to the branch blood vessel or aneurysm chamber; an inflatable balloon attached at the distal end segment of said catheter body into which inflation fluid may be delivered to inflate the balloon and withdrawn to deflate the balloon; delivery means having a delivery lumen extending from the proximal to the distal end segment of the catheter body and having an exit port in communication therewith for delivering an occluding agent to the vessel opening when positioned with respect thereto; and inflation means for inflating the balloon with inflation fluid to effect the inflation thereof within the main blood vessel lumen to form a seal of the main blood vessel around and on either side of the vessel opening and to position said delivery exit port in alignment with the vessel opening, whereby the occluding agent may be delivered through the vessel opening. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification