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EP0441384A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Readily exchangeable perfusion catheter
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1991-02-07
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Granted: —
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Expires: 2011-02-07
Abstract
Abstract A perfusion-type dilatation catheter (10) which can be rapidly exchanged for another catheter without the need for exchange wires or guidewire extension wires. The dilatation catheter (10) has an elongated catheter body (11) with a distal guidewire port (18) in the distal end of the catheter and a proximal guidewire port (17) at least 10 cm but not more than 50 cm from the distal port. The catheter body has a first inflation lumen (13) which extends from the proximal end of the catheter body to the interior of a dilatation balloon (12) adjacent the distal end of the catheter body. A second, much shorter inner lumen (16) is disposed between the proximal (17) and distal guidewire ports (18) and is adapted to slidably receive a guidewire (20). A plurality of perfusion ports (21,22) are provided both proximal and distal to the balloon which are in fluid communication with the second inner lumen (16) so that when the balloon is inflated within a patient's vascular system, blood will flow through the proximal perfusion ports and the second inner lumen and out the distal perfusion ports to minimize ischemic conditions distal to the catheter. A stiffening member (26) is disposed within the catheter body proximal to the proximal guidewire port to provide improved pushability.
Inventors
- 👤 R. Mcinnes Peter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 20:22
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0043; A61M2025/0063; A61M25/01; A61M2025/0183; A61M2025/0188; A61M2025/1043; A61M2025/107; A61M2025/1097; A61M25/09
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
An intravascular catheter for performing a vascular procedure within a patient's vascular system, comprising: a) an elongated catheter body having proximal and distal ends and an expandable member proximally adjacent the distal end thereof and a relatively short inner lumen adapted to receive a guidewire which extends between a distal guidewire port provided in the distal end of the catheter body and a proximal guidewire port which is provided in the catheter body and which is disposed at least 10 cm but not more than 50 cm from the distal guidewire port; b) at least one proximal perfusion port located between the proximal guidewire port and the expandable member and at least one distal perfusion port located between the expandable member and the distal end of the catheter body, the perfusion ports being in fluid communication with the inner lumen adapted to receive a guidewire; and c) means to stiffen a portion of the catheter body proximal to the proximal guidewire port to provide the catheter with improved pushability.
Claim 2
Dependent Claim
41 words
The intravascular catheter of claim 1 wherein the expandable member is an inflatable, relatively inelastic balloon suitable for dilating a stenosis and wherein the balloon is formed from a plastic resin selected from the group consisting of polyethylene and polyethylene teraphthalate.
Claim 3
Dependent Claim
45 words
The intravascular catheter of claim 2 wherein the inflation lumen extends distally from the proximal end of the catheter body to the interior of the balloon and wherein the proximal guidewire port is disposed about 12 to about 40 cm from the distal guidewire port.
Claim 4
Dependent Claim
49 words
The intravascular catheter of claim 1 wherein the means to stiffen the catheter body proximal to the proximal guidewire port is a rod tightly fitted within an inner lumen of the catheter body which extends from the proximal end thereof to a location proximal to the proximal guidewire port.
Claim 5
Dependent Claim
39 words
The intravascular catheter of claim 4 wherein the inflation lumen has a D-shaped transverse cross-section and a thin wire extends within the D-shaped inflation lumen to prevent the retention of air bubbles in a corner of the inflation lumen.
Claim 6
Dependent Claim
43 words
The intravascular catheter of claim 1 wherein a slit is provided in the wall of the catheter body defining at least in part the second inner lumen which extends from the proximal guidewire port to a location proximal to the proximal perfusion ports.
Claim 7
Dependent Claim
38 words
The intravascular catheter of claim 1 wherein there are about 6 to about 20 proximal perfusion ports in the catheter wall and wherein there are about 4 to about 12 distal perfusion ports provided in the catheter wall.
Claim 8
Dependent Claim
156 words
A vascular catheter having an expandable member on the distal end thereof and a relatively short inner lumen therein extending in a distal portion of the catheter body between a distal guidewire port and a proximal guidewire port about 10 to about 50 cm proximal from a distal guidewire port and perfusion ports in the wall of the catheter body in fluid communication with the short inner lumen between the proximal guidewire port and the distal guidewire port in the distal end of the catheter body; the vascular catheter being advanceable over a guidewire slidably disposed within the relatively short inner lumen; the expandable member on the vascular catheter being expandable to at least partially occlude a blood vessel at the location causing blood to flow through the proximal perfusion ports and the second inner lumen and out the distal perfusion ports; the expandable member being contractible to facilitate removal of the catheter from the patient.
Claim 9
Dependent Claim
104 words
The catheter of claim 8 wherein the guidewire is at least partially removed from the portion of the second inner lumen between the proximal and distal perfusion ports to avoid impeding blood flow through the second inner lumen, this being done by holding the guidewire in place at a first location outside of a patient and proximally moving the catheter over the guidewire until the proximal guidewire port thereof is immediately adjacent said first holding location; and holding the guidewire at a second location outside of a patient adjacent the distal guidewire port of the catheter and then removing the catheter from the guidewire.
Claim 10
Dependent Claim
168 words
The catheter of claim 8 further having a second dilatation catheter having an expandable member on the distal end thereof and a relatively short inner lumen therein extending in a distal portion of the catheter body between a distal guidewire port and a proximal guidewire port about 10 to about 50 cm proximal from the distal guidewire port and perfusion ports in the wall of the catheter body in fluid communication with the short inner lumen between the proximal guidewire port and the distal guidewire port in the distal end of the catheter body; wherein the second dilatation catheter is mounted onto the guidewire by passing the proximal end of the guidewire through the second lumen until a portion thereof extends out of the proximal guidewire port; holding the portion of the guidewire extending out of the proximal port of the catheter; and advancing the catheter over the guidewire into and through the vascular system of the patient until the catheter is positioned at a desired location therein.
References Cited (Backward Citations)
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