EP0664104A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Balloon catheter for occluding aneurysms or branch vessels
Assignee: Micro Therapeutics Inc
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Filing: 1995-01-12
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Granted: —
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Expires: 2015-01-12
Abstract
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 to occlude same employs 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 coupled to a delivery lumen laterally in the vessel in alignment with the vessel opening for delivering of the occluding agent therethrough. The inflated balloon maintains the occluding agent therein until it forms an occluding cast either in response to exposure to body fluids or radiation emitted from the catheter. The balloon may be shaped to form a blood perfusion passage and may be advanced over a guide wire. The distal catheter end may be rotated to align the delivery exit port with the aneurysm or branch vessel opening. 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. Alternatively mechanical thrombus forming devices may be delivered thereby into the aneurysm chamber or branch vessel to occlude it.
Inventors
- 👤 Andrew H. M. D. Cragg
- 👤 Jonathan Kagan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:44
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1002; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12027; A61B17/12036; A61B17/1204; A61B17/12099; A61B17/12109; A61B17/12113; A61B17/12131; A61B17/12136; A61B17/12181; A61B17/12186; A61B17/00491; A61M2025/1043; A61M2025/105; A61M2025/1052; A61M2025/1072
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
128 words
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 outside of the opening without occluding the vessel comprising: means for sealing the main vessel side wall and lumen from the vessel opening into the aneurysm or peripheral vessel to thereby shield the main vessel wall adjacent to the vessel opening; and means for delivering an occluding agent through the vessel opening leading to the aneurysm chamber or peripheral vessel while 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.
Claim 2
Dependent Claim
120 words
The apparatus of Claim 1 wherein said sealing means further comprises: an elongated balloon catheter having an inflatable balloon; means for introducing the balloon catheter into a position in the main vessel adjacent to the vessel opening; and means for inflating the balloon to fill the blood vessel and to seal the delivery exit port and the vessel opening from the blood vessel lumen; and wherein said delivering means further comprises: means for positioning a delivery exit port in position in the main vessel adjacent to the vessel opening to deliver the occluding agent through the vessel opening; and means for delivering an occluding agent through said delivery exit port and through said vessel opening during inflation of said balloon.
Claim 3
Dependent Claim
172 words
The apparatus of Claim 1 wherein said sealing means further comprises: a balloon catheter having an inflatable balloon and first and second delivery lumens extending therethrough terminating in first and second delivery exit ports; means for introducing the balloon catheter into a position in the main vessel adjacent to the vessel opening and orienting the delivery exit ports to the vessel opening; means for inflating the balloon to fill the blood vessel and to seal the delivery exit ports and the vessel opening from the blood vessel lumen; and said delivery means further comprises: means for delivering a first component of the occluding agent through the first delivery lumen and first delivery exit port and into the opening; and means for delivering a second component of the occluding agent through the second delivery lumen and second delivery exit port and into the opening, whereby the first and second components of the occluding agent mix together in the peripheral vessel or aneurysm distal to the vessel opening to form the occluding cast therein.
Claim 4
Dependent Claim
187 words
The apparatus of Claim 1 wherein said sealing means further comprises: an elongated catheter body having a proximal end segment and a distal end segment adapted to be introduced into the main blood vessel in relation to the vessel opening leading to the branch blood vessel or aneurysm chamber; and 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; and said delivery means further comprises: 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 and supported by said balloon for delivering an occluding agent to the vessel opening when positioned with respect thereto upon inflation of said balloon with inflation fluid to effect the inflation thereof 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.
Claim 5
Dependent Claim
107 words
The apparatus of Claim 4 wherein: said balloon is formed of a balloon wall extending along said distal end segment of said catheter body and around the circumference thereof, whereby said balloon is inflatable outwardly from said distal end segment against the wall of a blood vessel on inflation thereof; and said delivery lumen is formed on and extends along said balloon wall a predetermined distance and is formed with said delivery exit port which faces away from said balloon and said distal end segment, whereby inflation of said balloon laterally extends said delivery exit port against a vessel opening in the wall of a blood vessel.
Claim 6
Dependent Claim
140 words
The apparatus of Claim 4 wherein: said balloon is formed of a balloon wall extending along said distal end segment of said catheter body and around at least a major section of the circumference thereof, whereby said balloon is inflatable outwardly from said distal end segment against the wall of a blood vessel on inflation thereof to fill the blood vessel lumen and displace the minor section of the circumference of said distal end segment of said catheter body against the blood vessel wall; and said delivery exit port is formed in said minor section of the circumference of said distal end segment a predetermined distance along the length of said balloon and faces away from said balloon, whereby inflation of said balloon laterally extends said delivery exit port against a vessel opening in the wall of a blood vessel.
Claim 7
Dependent Claim
77 words
The apparatus of Claim 6 wherein: said balloon is formed of a tubular balloon wall adhered to said catheter body along said distal end segment of said catheter body in said minor section of the circumference thereof to form an adhered balloon section; and said delivery exit port is formed in said adhered balloon section, whereby inflation of said balloon laterally extends said delivery exit port against a vessel opening in the wall of a blood vessel.
Claim 8
Independent Claim
64 words
The apparatus of any of the Claims 5, 6 or 7 wherein said balloon further comprises: means for forming a perfusion channel between said balloon wall extending along said distal end segment of said catheter body and the main blood vessel wall sealed from said vessel opening upon inflation of said balloon in a segment of said balloon opposite to said delivery exit port.
Claim 9
Independent Claim
84 words
The apparatus of any of the Claims 4-8 wherein: said catheter body further comprises an inner elongated tube and an outer elongated tube in co-axial alignment to form an inner lumen and an outer lumen; and said balloon is formed of said outer tube in said distal end segment thereof; and wherein: said inflation means comprises said outer lumen; and said delivery lumen is formed within said outer tube and extends form said proximal to said distal segment terminating in said delivery exit port.
Claim 10
Independent Claim
30 words
The apparatus of any of the Claims 1-9 further comprising: means for aspirating through the vessel opening leading to the aneurysm chamber or peripheral vessel before delivering the occluding agent.
Claim 11
Independent Claim
31 words
The apparatus of any of the Claims 1-10 further comprising: means for venting through the vessel opening leading to the aneurysm chamber or peripheral vessel during delivery of the occluding agent.
Claim 12
Independent Claim
69 words
The apparatus of any of the Claims 1-11 wherein the occluding agent has a liquid form for delivery through the vessel opening, the occluding agent being reactive to irradiating light for solidifying as a solid occluding cast, and further comprising : means for irradiating the occluding agent delivered through the vessel opening with light directed through the vessel opening sufficiently to effect solidification of the delivered liquid occluding agent.
Claim 13
Independent Claim
35 words
The apparatus of any of the Claims 1-11 wherein the occluding agent has a liquid form for delivery through the vessel opening, the occluding agent being reactive on exposure to form the solid occluding cast.
Claim 14
Independent Claim
53 words
The apparatus of any of the Claims 1-11 wherein the occluding agent has a solid particulate form for delivery through the vessel opening, the occluding agent effective to coagulate blood around the particles and to form a solid thrombus mass within the aneurysm chamber or peripheral vessel functional as a solid occluding cast.
Claim 15
Independent Claim
46 words
The apparatus of any of the Claims 1-11 wherein the occluding agent further comprises a compressible shaped member having an expanded form when unconfined and compressible for delivery through a confined space and through the vessel opening, and specifically a coil or coils of noble metals.
Claim 16
Independent Claim
80 words
The apparatus of any of the Claims 5-9 further comprising: a further lumen extending from the proximal segment to the distal segment of said catheter body and formed on and extending along said balloon wall a predetermined distance to a further exit port which faces away from said balloon and said distal end segment, whereby inflation of said balloon laterally extends said further exit port against said vessel opening, whereby the occluding agent may be delivered through the vessel opening.
Claim 17
Dependent Claim
101 words
The apparatus of Claim 16 wherein the occluding agent delivered into through the vessel opening is a first component of a two component occluding agent that reacts with a second component and further comprising: means at the proximal end segment of said catheter body selectively adapted to couple said further lumen to deliver a second component of a two component occluding agent through said further exit port and through said vessel opening, whereby the first and second components of the occluding agent mix together in the peripheral vessel or aneurysm distal to the vessel opening to form the occluding cast therein.
Claim 18
Independent Claim
46 words
The apparatus of any of the Claims 16 or 17 further comprising: means for aspirating the contents of the aneurysm chamber or branch vessel through the vessel opening and one of the exit ports coupled to the delivery or further lumen before delivering the occluding agent.
Claim 19
Independent Claim
80 words
The apparatus of any of the Claims 16 or 17 further comprising: means for venting the contents of the aneurysm chamber or peripheral vessel through the vessel opening and through the further exit port and further lumen during delivery of the occluding agent through the delivery lumen and delivery exit port and through the vessel opening, whereby the occluding agent displaces the contents of the peripheral vessel or aneurysm distal to the vessel opening to form the occluding cast therein.
Claim 20
Independent Claim
117 words
The apparatus of any of the Claims 4-19 wherein: said distal segment end of said catheter body includes a distal extension terminating in a tip extending distally to said balloon; and further comprising: a guide wire for providing guidance of said distal end segment into position with respect to a vessel opening; means at said proximal end segment of said catheter body for receiving said guide wire in said inflation lumen; and valve means formed in said distal tip and across said inflation lumen for sealing said inflation lumen from the loss of inflation fluid during inflation of said balloon and for receiving said guide wire extending distally therethrough during introduction and positioning of said balloon catheter.
Claim 21
Independent Claim
140 words
The apparatus of any of the Claims 4-19 wherein: said distal segment end of said catheter body includes a distal extension terminating in a tip extending distally to said balloon; and further comprising: a twist wire for providing guidance of said distal end segment into position with respect to a vessel opening and for providing torque transfer from the proximal segment of said catheter body to said distal tip to provide rotational movement thereof; means at said proximal end segment of said catheter body for receiving said twist wire in said inflation lumen; and means formed in said distal tip and across said inflation lumen for sealing said inflation lumen from the loss of inflation fluid during inflation of said balloon and for receiving and attaching said twist wire extending distally therethrough during introduction and positioning of said balloon catheter.
Claim 22
Independent Claim
49 words
The apparatus of any of the Claims 4-21 further comprising: means for rotating the balloon catheter to rotate the inflated balloon across the vessel opening after delivering the occluding agent, whereby the vessel opening is sealed from the main vessel lumen as the occluding agent forms the occluding cast.
References Cited (Backward Citations)
No citation records indexed.
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