US20050149112A1
Expired / Lapsed
US
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Devices and methods for preventing distal embolization using flow reversal in arteries having collateral blood flow
Assignee: Zoll Circulation Inc
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Filing: 2005-01-11
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Granted: —
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Expires: 2025-01-11
Abstract
Abstract The invention provides a medical device having a catheter and one or more expandable constricting/occluding members. The catheter is adapted for use with therapeutic or diagnostic devices, including an angioplasty/stent catheter and an atherectomy catheter. The constrictor/occluder is mounted at the distal end of the catheter. Manometers may be mounted distal to one or more constrictors for measuring pressure distal to the constrictor(s). Methods of using the devices are disclosed for preventing distal embolization during extracranial or intracranial carotid artery, vertebral artery, or coronary artery procedures, or procedures involving any vessel having collateral flow by reversing flow in the diseased vessel.
Inventors
- 👤 Denise Barbut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:10
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12027; A61B17/1204; A61B17/12045; A61B17/12131; A61B17/12136; A61B17/22; A61F; A61F2/00; A61F2/01; A61F2/013; A61F2/014; A61M; A61M25/00; A61M25/10; A61M25/1011; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/12127; A61B2017/22051; A61B2017/22065; A61B2017/22067; A61B17/32; A61B17/3205; A61B17/3207; A61B2017/320716; A61F2/0105; A61M2025/1015; A61M2025/1043; A61M2025/1052; A61M2025/1095
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
113 words
1 . A method for flow reversal in a coronary artery having a proximal segment that branches into first and second distal segments, the first distal segment having a lesion and a source of collateral flow, the method comprising the steps of: inserting the distal end of a catheter into the proximal segment, the catheter having a proximal end, a distal end, and an expandable device on a distal region of the catheter; locating the expandable device within the proximal segment; expanding the expandable device to at least partially obstruct the proximal segment, wherein flow in the first distal segment is reversed to pass over the lesion and into the second distal segment.
Claim 2
Dependent Claim
113 words
1 . A method for flow reversal in a coronary artery having a proximal segment that branches into first and second distal segments, the first distal segment having a lesion and a source of collateral flow, the method comprising the steps of: inserting the distal end of a catheter into the proximal segment, the catheter having a proximal end, a distal end, and an expandable device on a distal region of the catheter; locating the expandable device within the proximal segment; expanding the expandable device to at least partially obstruct the proximal segment, wherein flow in the first distal segment is reversed to pass over the lesion and into the second distal segment.
Claim 3
Dependent Claim
38 words
2 . The method of claim 1 , wherein the proximal segment is a left main coronary artery, the first distal segment is a left anterior descending artery, and the second distal segment is a left circumflex artery.
Claim 4
Dependent Claim
29 words
3 . The method of claim 1 , wherein the distal end of the catheter is inserted into the proximal segment through an incision made in a femoral artery.
Claim 5
Dependent Claim
34 words
4 . The method of claim 1 , wherein the distal end of the catheter is inserted into the proximal segment through an incision made in the left sublclavian artery or left brachial artery.
Claim 6
Dependent Claim
30 words
5 . The method of claim 1 , wherein the distal end of the catheter is inserted into the proximal segment through an incision made in the right sublcalvian artery.
Claim 7
Dependent Claim
38 words
6 . The method of claim 1 , further comprising the steps of inserting a second expandable device in the second distal segment and expanding the second expandable device to at least partially obstruct the second distal segment.
Claim 8
Dependent Claim
29 words
7 . The method of claim 1 , further comprising the step of inserting a filter in the second distal segment to capture debris in the second distal segment.
Claim 9
Dependent Claim
21 words
8 . The method of claim 1 , further comprising the step of injecting an angiographic dye to confirm flow reversal.
Claim 10
Dependent Claim
20 words
9 . The method of claim 1 , further comprising the step of treating the lesion with an interventional catheter.
Claim 11
Dependent Claim
15 words
10 . The method of claim 9 , wherein the catheter is an angioplasty catheter.
Claim 12
Dependent Claim
15 words
11 . The method of claim 9 , wherein the catheter is an atherectomy catheter.
Claim 13
Dependent Claim
16 words
12 . The method of claim 9 , wherein the catheter is a stent deployment catheter.
Claim 14
Dependent Claim
18 words
13 . The method of claim 1 , further comprising the step of treating the lesion by thromboendarterectomy.
Claim 15
Dependent Claim
23 words
14 . The method of claim 1 , further comprising the step of treating the lesion by bypass graft using woven prosthetic tube.
Claim 16
Dependent Claim
33 words
15 . The method of claim 1 , further comprising the step of treating the lesion by bypass graft using an autogenous vein anastomosed end-to-side to the vessel above and below the obstruction.
Claim 17
Dependent Claim
21 words
16 . The method of claim 1 , further comprising the step of treating the lesion by resection with graft replacement.
Claim 18
Dependent Claim
17 words
17 . The method of claim 1 , wherein the catheter further comprises a pressure measuring mechanism.
Claim 19
Dependent Claim
16 words
18 . The method of claim 17 , wherein the pressure measuring mechanism is a manometer.
Claim 20
Dependent Claim
23 words
19 . The method of claim 17 , wherein the pressure measuring mechanism is a pressure lumen that communicates with an external manometer.
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