US5916193A
Expired / Lapsed
US
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Endovascular cardiac venting catheter and method
Assignee: Edwards Lifesciences LLC
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Filing: 1996-11-30
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Granted: 1999-06-29
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Expires: 2016-11-30
Abstract
Abstract A venting catheter, system and method are provided for withdrawing blood and other fluids from a patient's heart to facilitate decompressing the heart during cardioplegic arrest and cardiopulmonary bypass, without the need for a thoracotomy and without puncturing the aorta, pulmonary artery, or heart itself. The venting catheter is configured to be introduced into a peripheral vein and intralumninally advanced through the right side of the heart and into the pulmonary artery. The venting catheter includes a lumen configured to withdraw blood at a rate of at least about 50 ml/min at a pressure of no less than about -350 mmHg. A flow-directing means is provided to facilitate guiding the catheter into the pulmonary artery by being carried by blood flow through the heart. The cardiac venting system may include, in addition to the cardiac venting catheter, a cardiopulmonary bypass system to maintain circulation of oxygenated blood, and means for arresting the patient's heart.
Inventors
- 👤 John H. Stevens
- 👤 Jeffrey W. Krier
- 👤 Kirsten L. Valley
- 👤 Philip C. Evard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:33
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0041; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2427; A61F2/243; A61F2/2433; A61M1/00; A61M1/36; A61M1/3621; A61M1/3653; A61M1/3659; A61M25/0067; A61M25/0068; A61M25/007; A61M25/01; A61M25/06; A61M25/0662; A61M25/10; A61M29/00; A61M29/02; A61B; A61B18/00; A61B2018/00053; A61B2018/00214; A61B2018/0022; A61B2018/00232; A61B2018/0025; A61B2018/00261; A61F2/2436; A61M1/3613; A61M2025/0004; A61M25/0074; A61M25/0075; A61M2025/0076; A61M2025/0078; A61M25/02; A61M2025/028; A61M2025/1043; A61M2025/1047; A61M2025/1052; A61M2025/1077; A61M2202/00; A61M2202/04; A61M2202/0468; A61M2202/047; A61M2210/00; A61M2210/12; A61M2210/125; A61M2210/127; A61M25/0105; A61M25/0125
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
160 words
A method of venting blood from a patient's heart comprising: introducing a venting catheter into a peripheral vein, the venting catheter having a distal end, a lumen, and an inlet coupled to the lumen; positioning a flow-directed catheter in the lumen of the venting catheter; introducing the flow-directed catheter into the peripheral vein; advancing the flow-directed catheter through the peripheral vein and into the patient's heart; and expanding an expandable member on the distal end of the flow-directed catheter the expanded expandable member being carried by blood flow through the heart and into the pulmonary artery; advancing the distal end of the venting catheter through the peripheral vein and through the patient's tricuspid and pulmonary valves, wherein the venting catheter advancing step is carried out by slidably advancing the venting catheter over the flow-directed catheter; positioning the distal end of the venting catheter in a pulmonary artery; and withdrawing blood from the pulmonary artery through the inlet and the lumen.
Claim 2
Independent Claim
160 words
A method of venting blood from a patient's heart comprising: introducing a venting catheter into a peripheral vein, the venting catheter having a distal end, a lumen, and an inlet coupled to the lumen; positioning a flow-directed catheter in the lumen of the venting catheter; introducing the flow-directed catheter into the peripheral vein; advancing the flow-directed catheter through the peripheral vein and into the patient's heart; and expanding an expandable member on the distal end of the flow-directed catheter the expanded expandable member being carried by blood flow through the heart and into the pulmonary artery; advancing the distal end of the venting catheter through the peripheral vein and through the patient's tricuspid and pulmonary valves, wherein the venting catheter advancing step is carried out by slidably advancing the venting catheter over the flow-directed catheter; positioning the distal end of the venting catheter in a pulmonary artery; and withdrawing blood from the pulmonary artery through the inlet and the lumen.
Claim 3
Dependent Claim
24 words
The method of claim 1 further comprising the step of: measuring pressure in the pulmonary artery through a pressure lumen in the venting catheter.
Claim 4
Dependent Claim
30 words
The method of claim 1 wherein blood is withdrawn from the pulmonary artery at a rate of at least 50 ml/min at a pressure no lower than about -350 mmHg.
Claim 5
Dependent Claim
18 words
The method of claim 1 further comprising the step of: occluding the pulmonary artery while withdrawing blood therefrom.
Claim 6
Dependent Claim
23 words
The method of claim 4 wherein the step of occluding comprises expanding an expandable member on a distal end of the venting catheter.
Claim 7
Dependent Claim
34 words
The method of claim 1 further comprising the step of: establishing cardiopulmonary bypass by withdrawing blood from a vein, oxygenating the blood withdrawn from the vein, and returning the oxygenated blood to an artery.
Claim 8
Dependent Claim
19 words
The method of claim 6 further comprising the step of: arresting the patient's heart after cardiopulmonary bypass is established.
Claim 9
Dependent Claim
35 words
The method of claim 7 wherein the step of arresting the heart comprises: isolating coronary arteries form the oxygenated blood returned to the artery; and delivering cardioplegic fluid to a myocardium of the patient's heart.
Claim 10
Dependent Claim
25 words
The method of claim 1 further comprising the step of: oxygenating the blood withdrawn from the pulmonary artery and returning the blood to an artery.
Claim 11
Dependent Claim
20 words
The method of claim 1 wherein the peripheral vein is selected from an internal jugular vein and a femoral vein.
Claim 12
Independent Claim
110 words
A method of venting blood from a patient's heart comprising: introducing a venting catheter into a peripheral vein, the venting catheter having a distal end, a lumen, and an inlet coupled to the lumen; advancing the distal end of the venting catheter through the peripheral vein and through the patient's tricuspid and pulmonary valves, the advancing step includes the step of expanding an expandable member on the venting catheter, the expanded expandable member being carried by blood flow through the heart into the pulmonary artery; positioning the distal end of the venting catheter in a pulmonary artery; and withdrawing blood from the pulmonary artery through the inlet and the lumen.
Claim 13
Independent Claim
110 words
A method of venting blood from a patient's heart comprising: introducing a venting catheter into a peripheral vein, the venting catheter having a distal end, a lumen, and an inlet coupled to the lumen; advancing the distal end of the venting catheter through the peripheral vein and through the patient's tricuspid and pulmonary valves, the advancing step includes the step of expanding an expandable member on the venting catheter, the expanded expandable member being carried by blood flow through the heart into the pulmonary artery; positioning the distal end of the venting catheter in a pulmonary artery; and withdrawing blood from the pulmonary artery through the inlet and the lumen.
Claim 14
Dependent Claim
24 words
The method of claim 11 further comprising the step of: measuring pressure in the pulmonary artery through a pressure lumen in the venting catheter.
Claim 15
Dependent Claim
30 words
The method of claim 11 wherein blood is withdrawn from the pulmonary artery at a rate of at least 50 ml/min at a pressure no lower than about -350 MmHg.
Claim 16
Dependent Claim
18 words
The method of claim 11 further comprising the step of: occluding the pulmonary artery while withdrawing blood therefrom.
Claim 17
Dependent Claim
19 words
The method of claim 14 wherein the step of occluding comprises expanding the expandable member on the venting catheter.
Claim 18
Dependent Claim
34 words
The method of claim 11 further comprising the step of: establishing cardiopulmonary bypass by withdrawing blood from a vein, oxygenating the blood withdrawn from the vein, and returning the oxygenated blood to an artery.
Claim 19
Dependent Claim
19 words
The method of claim 16 further comprising the step of: arresting the patient's heart after cardiopulmonary bypass is established.
Claim 20
Dependent Claim
35 words
The method of claim 17 wherein the step of arresting the heart comprises: isolating coronary arteries from the oxygenated blood returned to the artery; and delivering cardioplegic fluid to a myocardium of the patient's heart.
Claim 21
Dependent Claim
25 words
The method of claim 11 further comprising the step of: oxygenating the blood withdrawn from the pulmonary artery and returning the blood to an artery.
Claim 22
Dependent Claim
20 words
The method of claim 11 wherein the peripheral vein is selected from an internal jugular vein and a femoral vein.
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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) | 2002-06-28 | 2002-12-28 | 2003-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-28 | 2006-12-28 | 2007-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-28 | 2010-12-28 | 2011-06-29 | $7700.00 | Window Closed / Lapsed |