US6540712B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and low profile apparatus for reducing embolization during treatment of carotid artery disease
Assignee: W.L. Gore and Associates Inc
•
Filing: 2000-03-20
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Granted: 2003-04-01
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Expires: 2020-03-20
Abstract
Abstract Methods and apparatus are provided for removing emboli during an angioplasty, stenting or surgical procedure comprising a catheter having an occlusion element, an aspiration lumen, and a blood outlet port in communication with the lumen, a guide wire having a balloon, a venous return catheter with a blood inlet port, and tubing that couples the blood outlet port to the blood inlet port. A blood filter and/or flow control valve may be included in-line with the tubing to filter emboli from blood reperfused into the patient and to control the degree of flow reversal.
Inventors
- 👤 Juan Carlos Parodi
- 👤 Takao Ohki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/013; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12027; A61B17/1204; A61B17/12045; A61B17/12099; A61B17/12109; A61B17/12131; A61B17/12136; A61B17/12168; A61B17/12172; A61B17/22; A61M; A61M25/00; A61M25/10; A61M25/1027; A61B17/221; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/22051; A61B2017/22065; A61B2017/22067; A61B2017/2215; A61B17/32; A61B17/3205; A61B17/3207; A61B2017/320716; A61B2217/00; A61B2217/002; A61B2217/005; A61F2/011; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0008; A61M25/1029; A61M2025/1031; A61M2025/1043; A61M2025/1065
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
195 words
Apparatus for removing emboli during an angioplasty or stenting procedure the apparatus comprising: a catheter having proximal and distal ends, an aspiration lumen and a guide wire lumen, each of the aspiration lumen and guide wire lumen extending from the proximal end to the distal end, and a blood outlet port in communication with the aspiration lumen, the catheter adapted to be disposed in a patient's carotid artery; an occlusion element disposed on the distal end of the catheter and having an opening that communicates with the aspiration lumen, the occlusion element having a contracted state suitable for transluminal insertion and an expanded state wherein the occlusion element occludes antegrade flow in the artery; a venous return catheter having proximal and distal ends, a lumen extending therethrough, and a blood inlet port in communication with the lumen; tubing that couples the blood outlet port to the blood inlet port; a flow control valve coupled between the blood outlet port and blood inlet port; and a wire having a distal end and a balloon disposed on the distal end, wherein the wire and balloon are sized to pass through the guide wire lumen of the catheter.
Claim 2
Dependent Claim
195 words
Apparatus for removing emboli during an angioplasty or stenting procedure the apparatus comprising: a catheter having proximal and distal ends, an aspiration lumen and a guide wire lumen, each of the aspiration lumen and guide wire lumen extending from the proximal end to the distal end, and a blood outlet port in communication with the aspiration lumen, the catheter adapted to be disposed in a patient's carotid artery; an occlusion element disposed on the distal end of the catheter and having an opening that communicates with the aspiration lumen, the occlusion element having a contracted state suitable for transluminal insertion and an expanded state wherein the occlusion element occludes antegrade flow in the artery; a venous return catheter having proximal and distal ends, a lumen extending therethrough, and a blood inlet port in communication with the lumen; tubing that couples the blood outlet port to the blood inlet port; a flow control valve coupled between the blood outlet port and blood inlet port; and a wire having a distal end and a balloon disposed on the distal end, wherein the wire and balloon are sized to pass through the guide wire lumen of the catheter.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 further comprising a blood filter coupled between the blood outlet port and the blood inlet port.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein the occlusion element is an inflatable member.
Claim 5
Dependent Claim
25 words
The apparatus of claim 3 wherein the inflatable element has a pear-shape with a wall thickness that varies along the length of the inflatable member.
Claim 6
Dependent Claim
30 words
The apparatus of claim 3 wherein a portion of the pear-shaped inflatable member extends beyond the distal end of the catheter in the contracted position and forms an atraumatic bumper.
Claim 7
Dependent Claim
30 words
The apparatus of claim 3 wherein a portion of the pear-shaped inflatable member extends beyond the distal end of the catheter in the contracted position and forms an atraumatic bumper.
Claim 8
Dependent Claim
37 words
The apparatus of claim 1 wherein the catheter comprises: a non-stick tubular member; a layer of wire braid disposed surrounding the non-stick tubular member; and a layer of thermoplastic polymer disposed on the layer of wire braid.
Claim 9
Dependent Claim
20 words
The apparatus of claim 7 wherein the layer of wire braid is omitted in a distal region of the catheter.
Claim 10
Dependent Claim
24 words
The apparatus of claim 1 wherein the apparatus has a substantially uniform cross sectional diameter when the occlusion element is in the contracted state.
Claim 11
Dependent Claim
23 words
The apparatus of claim 1 further comprising a pump that removes blood through the catheter and reperfuses blood via the venous return catheter.
Claim 12
Dependent Claim
28 words
The apparatus of claim 1 further comprising a resilient wedge affixed to the wire proximal of the balloon to reduce snagging of the balloon following a stenting procedure.
Claim 13
Dependent Claim
192 words
Apparatus for removing emboli during an angioplasty or stenting procedure and a balloon disposed on the distal end, the apparatus comprising: a catheter having a proximal end and a distal end, an aspiration lumen and a guide wire lumen, each of the aspiration lumen and the guide wire lumen extending from the proximal to the distal end, and a blood outlet port in communication with the aspiration lumen, the catheter adapted to be disposed in a patient's carotid artery; an occlusion element disposed on the distal region of the catheter and having an opening that communicates with the aspiration lumen, the occlusion element having a contracted state suitable for transluminal insertion and an expanded state wherein the occlusion element occludes antegrade flow in the artery; a venous return catheter having proximal and distal ends, a lumen extending therethrough, and a blood inlet port in communication with the lumen; tubing that couples the blood outlet port to the blood inlet port; and a wire having a distal end and a balloon disposed on the distal end, wherein the wire and balloon are sized to pass through the guide wire lumen of the catheter.
Claim 14
Dependent Claim
192 words
Apparatus for removing emboli during an angioplasty or stenting procedure and a balloon disposed on the distal end, the apparatus comprising: a catheter having a proximal end and a distal end, an aspiration lumen and a guide wire lumen, each of the aspiration lumen and the guide wire lumen extending from the proximal to the distal end, and a blood outlet port in communication with the aspiration lumen, the catheter adapted to be disposed in a patient's carotid artery; an occlusion element disposed on the distal region of the catheter and having an opening that communicates with the aspiration lumen, the occlusion element having a contracted state suitable for transluminal insertion and an expanded state wherein the occlusion element occludes antegrade flow in the artery; a venous return catheter having proximal and distal ends, a lumen extending therethrough, and a blood inlet port in communication with the lumen; tubing that couples the blood outlet port to the blood inlet port; and a wire having a distal end and a balloon disposed on the distal end, wherein the wire and balloon are sized to pass through the guide wire lumen of the catheter.
Claim 15
Dependent Claim
21 words
The apparatus of claim 12 further comprising a flow control valve coupled between the blood outlet port and blood inlet port.
Claim 16
Dependent Claim
21 words
The apparatus of claim 12 further comprising a blood filter coupled between the blood outlet port and the blood inlet port.
Claim 17
Dependent Claim
13 words
The apparatus of claim 12 wherein the occlusion element is an inflatable member.
Claim 18
Dependent Claim
25 words
The apparatus of claim 15 wherein the inflatable element has a pear-shape with a wall thickness that varies along the length of the inflatable member.
Claim 19
Dependent Claim
37 words
The apparatus of claim 12 wherein the catheter comprises: a non-stick tubular member; a layer of wire braid disposed surrounding the non-stick tubular member; and a layer of thermoplastic polymer disposed on the layer of wire braid.
Claim 20
Dependent Claim
24 words
The apparatus of claim 12 wherein the apparatus has a substantially uniform cross sectional diameter when the occlusion element is in the contracted state.
Claim 21
Dependent Claim
23 words
The apparatus of claim 12 further comprising a pump that removes blood through the catheter and reperfuses blood via the venous return catheter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-03-31 | 2006-09-30 | 2007-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-03-31 | 2010-09-30 | 2011-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-03-31 | 2014-09-30 | 2015-04-01 | $7700.00 | Window Closed / Lapsed |