US20030083617A1
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US
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Partial aortic occlusion devices and methods for renal and coronary perfusion augmentation
Assignee: Zoll Circulation Inc
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Filing: 2002-11-08
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Granted: —
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Expires: 2022-11-08
Abstract
Abstract A method for increasing renal and/or coronary blood flow. A catheter is inserted into the descending aorta. An expandable member on a distal region of the catheter is positioned in the aorta downstream from the takeoff of a renal artery or downstream from a coronary ostium. The expandable member is expanded to partially occlude blood flow in the aorta. Blood pressure in the proximal aorta increases, blood pressure in the distal aorta decreases, and renal and/or coronary blood flow increases by this technique. Blood pressure in the proximal aorta may be measured to monitor the effects of the procedure. The expansion of the expandable member may be adjusted based on the measured blood pressure.
Inventors
- 👤 Jon St. Germain
- 👤 Denise Barbut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:54
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12027; A61B17/1204; A61B17/12045; A61B17/12036; A61B17/12099; A61B17/12109; A61B17/12131; A61B17/12136; A61B17/1214; A61B17/12145; A61B17/12181; A61B17/1219; A61B5/00; A61B5/02; A61B5/021; A61B5/0215; A61B5/40; A61B5/4076; A61B6/00; A61B6/48; A61B6/481; A61F; A61F7/00; A61F7/12; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/003; A61M25/0067; A61M25/0068; A61M25/008; A61M25/0082; A61M25/01; A61M25/0105; A61M25/0133; A61M25/0147; A61M25/10; A61M25/1011; A61B17/22; A61B2017/22051; A61B2017/22054; A61B90/00; A61B90/39; A61B2090/3966; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2002/068; A61F2007/126; A61M2025/0001; A61M2025/0002; A61M2025/0034; A61M2025/0073; A61M2025/0081; A61M2025/1043; A61M2025/1052; A61M2210/00; A61M2210/12; A61M2210/127; A61M2230/00; A61M2230/005; A61M2230/30; A61M25/0032; A61M25/0069; A61M25/0074; A61M25/06; A61M25/0662
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
106 words
1 . A method for increasing renal blood flow, comprising the steps of: inserting a catheter into the descending aorta, the catheter having a proximal region, a distal region, and an expandable member mounted on the distal region; locating the expandable member in the aorta downstream from the takeoff of a renal artery; expanding the expandable member to partially occlude blood flow in the aorta, wherein blood pressure in the proximal aorta increases, blood pressure in the distal aorta decreases, and renal blood flow increases; measuring blood pressure in the proximal aorta; and adjusting the expansion of the expandable member based on the measured blood pressure.
Claim 2
Dependent Claim
106 words
1 . A method for increasing renal blood flow, comprising the steps of: inserting a catheter into the descending aorta, the catheter having a proximal region, a distal region, and an expandable member mounted on the distal region; locating the expandable member in the aorta downstream from the takeoff of a renal artery; expanding the expandable member to partially occlude blood flow in the aorta, wherein blood pressure in the proximal aorta increases, blood pressure in the distal aorta decreases, and renal blood flow increases; measuring blood pressure in the proximal aorta; and adjusting the expansion of the expandable member based on the measured blood pressure.
Claim 3
Dependent Claim
19 words
2 . The method of claim 1 , wherein a lumen of the catheter is adapted for blood flow.
Claim 4
Dependent Claim
22 words
3 . The method of claim 2 , wherein the catheter further comprises a second lumen adapted to receive a medical instrument.
Claim 5
Dependent Claim
32 words
4 . The method of claim 1 , further comprising the step of advancing a medical instrument through a lumen of the catheter and into an artery that branches from the aorta.
Claim 6
Dependent Claim
63 words
5 . The method of claim 4 , wherein the medical instrument is selected from the group consisting of a guiding catheter, an infusion catheter, an angioplasty catheter, a laser catheter, an angiography catheter, a therapeutic ultrasound catheter, a hypothermia catheter, a stent catheter, an imaging catheter, a perfusion catheter, an atherectomy catheter, an occlusion catheter, an EP catheter, and an aspiration catheter.
Claim 7
Dependent Claim
39 words
6 . The method of claim 1 , wherein the step of expanding the expandable member comprises reducing the luminal diameter of the expandable member to reduce blood flow, while an outer diameter of the expandable member remains constant.
Claim 8
Dependent Claim
24 words
7 . The method of claim 1 , wherein the step of expanding the expandable member includes maintaining the expanded expandable member during systole.
Claim 9
Dependent Claim
30 words
8 . The method of claim 1 , wherein the expandable member comprises a toroidal balloon, and wherein the step of expanding the expandable member comprises inflating the expandable member.
Claim 10
Dependent Claim
29 words
9 . The method of claim 1 , wherein the expandable member comprises a balloon, and wherein the step of expanding the expandable member comprises inflating the expandable member.
Claim 11
Dependent Claim
103 words
10 . A method for increasing coronary blood flow, comprising the steps of: inserting a catheter into the descending aorta, the catheter having a proximal region, a distal region, and an expandable member mounted on the distal region; locating the expandable member in the aorta downstream from a coronary ostium; expanding the expandable member to partially occlude blood flow in the aorta, wherein blood pressure in the proximal aorta increases, blood pressure in the distal aorta decreases, and coronary blood flow increases; measuring blood pressure in the proximal aorta; and adjusting the expansion of the expandable member based on the measured blood pressure.
Claim 12
Dependent Claim
103 words
10 . A method for increasing coronary blood flow, comprising the steps of: inserting a catheter into the descending aorta, the catheter having a proximal region, a distal region, and an expandable member mounted on the distal region; locating the expandable member in the aorta downstream from a coronary ostium; expanding the expandable member to partially occlude blood flow in the aorta, wherein blood pressure in the proximal aorta increases, blood pressure in the distal aorta decreases, and coronary blood flow increases; measuring blood pressure in the proximal aorta; and adjusting the expansion of the expandable member based on the measured blood pressure.
Claim 13
Dependent Claim
19 words
11 . The method of claim 10 , wherein a lumen of the catheter is adapted for blood flow.
Claim 14
Dependent Claim
22 words
12 . The method of claim 11 , wherein the catheter further comprises a second lumen adapted to receive a medical instrument.
Claim 15
Dependent Claim
32 words
13 . The method of claim 10 , further comprising the step of advancing a medical instrument through a lumen of the catheter and into an artery that branches from the aorta.
Claim 16
Dependent Claim
63 words
14 . The method of claim 13 , wherein the medical instrument is selected from the group consisting of a guiding catheter, an infusion catheter, an angioplasty catheter, a laser catheter, an angiography catheter, a therapeutic ultrasound catheter, a hypothermia catheter, a stent catheter, an imaging catheter, a perfusion catheter, an atherectomy catheter, an occlusion catheter, an EP catheter, and an aspiration catheter.
Claim 17
Dependent Claim
39 words
15 . The method of claim 10 , wherein the step of expanding the expandable member comprises reducing the luminal diameter of the expandable member to reduce blood flow, while an outer diameter of the expandable member remains constant.
Claim 18
Dependent Claim
24 words
16 . The method of claim 10 , wherein the step of expanding the expandable member includes maintaining the expanded expandable member during systole.
Claim 19
Dependent Claim
30 words
17 . The method of claim 10 , wherein the expandable member comprises a toroidal balloon, and wherein the step of expanding the expandable member comprises inflating the expandable member.
Claim 20
Dependent Claim
29 words
18 . The method of claim 10 , wherein the expandable member comprises a balloon, and wherein the step of expanding the expandable member comprises inflating the expandable member.
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