US6443922B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and devices for maintaining cardiopulmonary bypass and arresting a patient's heart
Assignee: Edwards Lifesciences LLC
•
Filing: 1999-09-23
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Granted: 2002-09-03
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Expires: 2019-09-23
Abstract
Abstract An endovascular system for arresting a patient's heart and maintaining the patient on cardiopulmonary bypass. A venous cannula, venting catheter and an aortic occlusion device are all coupled together so that the blood drawn into each of these catheters may be fed to a pump. A manifold has valves which control flows through the venous cannula, venting catheter and aortic occlusion device. A blood storage element is also provided so that the amount of blood in the perfusion circuit may be varied if necessary. The blood storage element is preferably positioned in parallel with the pump so that the pump may be used to add and remove blood to and from the blood storage element.
Inventors
- 👤 Craig P. Roberts
- 👤 John M. Toomasian
- 👤 Sylvia W. Fan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:20
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M1/00; A61M1/36; A61M1/3621; A61M1/3666; A61M1/3667; A61M1/3613; A61M2025/0004; A61M25/0023; A61M25/0026; A61M25/003; A61M2025/0031; A61M2202/00; A61M2202/04; A61M2202/0468; A61M2202/047; A61M2205/00; A61M2205/12; A61M2210/00; A61M2210/12; A61M2210/125; A61M25/0032; A61M25/0067; A61M25/0068; A61M25/007; Y; Y10; Y10S; Y10S128/00; Y10S128/03
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
120 words
A method of withdrawing blood from a patient for use with a cardiopulmonary bypass system, comprising the steps of: providing a venous cannula and a venting catheter, the venous cannula having a lumen and at least one opening in fluid communication with the lumen, the venting catheter also having a venting lumen with at least one opening in fluid communication with the venting lumen; inserting the venous cannula into a vein of a patient; passing the venting catheter through the patient's tricuspid and pulmonary valves; coupling the venous catheter and the venous cannula to a pump; and withdrawing blood from the patient through the lumen of the venous cannula and the venting lumen of the venting catheter using the pump.
Claim 2
Independent Claim
120 words
A method of withdrawing blood from a patient for use with a cardiopulmonary bypass system, comprising the steps of: providing a venous cannula and a venting catheter, the venous cannula having a lumen and at least one opening in fluid communication with the lumen, the venting catheter also having a venting lumen with at least one opening in fluid communication with the venting lumen; inserting the venous cannula into a vein of a patient; passing the venting catheter through the patient's tricuspid and pulmonary valves; coupling the venous catheter and the venous cannula to a pump; and withdrawing blood from the patient through the lumen of the venous cannula and the venting lumen of the venting catheter using the pump.
Claim 3
Dependent Claim
57 words
The method of claim 1 , further comprising the step of: inserting an arterial cannula into an artery of the patient, the arterial cannula having a lumen; coupling the lumen of the arterial cannula to an outlet of the pump; and returning the blood to the patient through the lumen of the arterial cannula using the pump.
Claim 4
Dependent Claim
35 words
The method of claim 2 , further comprising the step of: fluidly coupling a blood storage element to the outlet of the pump; and selectively changing a volume of blood in the blood storage element.
Claim 5
Dependent Claim
20 words
The method of claim 1 , wherein: the providing step is carried out with the pump being a centrifugal pump.
Claim 6
Dependent Claim
90 words
The method of claim 1 , further comprising: inserting an aortic occlusion device into the patient; passing the aortic occlusion device through the patient so that an occluding member on the aortic occlusion device is positioned in the ascending aorta; expanding the occluding member so that the ascending aorta is occluded; delivering cardioplegic fluid through a lumen in the aortic occlusion device; coupling the lumen of the aortic occlusion device to the pump; and venting blood from the patient through the lumen in the aortic occlusion device using the pump.
Claim 7
Independent Claim
195 words
A method of withdrawing and returning blood to a patient supported by a cardiopulmonary bypass system, comprising the steps of: passing a first lumen and a second lumen through an opening in a patient's artery, the first lumen having an occluding member mounted thereto, the occluding member being movable between a collapsed condition and an expanded condition; inserting a venous cannula into a vein of the patient; coupling the venous cannula to a venous line; withdrawing blood from the patient through the venous cannula and the venous line; returning the blood to the patient through an arterial line coupled to the second lumen; positioning the occluding member in the patient's ascending aorta; expanding the occluding member to occlude the patient's ascending aorta; delivering cardioplegic fluid through the first lumen to thereby arrest the patient's heart; providing a venting catheter; passing the venting catheter through the patient's tricuspid and pulmonary valves; withdrawing blood from the patient using the venting catheter; providing a blood storage element having an inlet and an outlet; fluidly coupling the inlet of the blood storage element to the arterial line; and selectively changing a volume of blood in the blood storage element.
Claim 8
Independent Claim
195 words
A method of withdrawing and returning blood to a patient supported by a cardiopulmonary bypass system, comprising the steps of: passing a first lumen and a second lumen through an opening in a patient's artery, the first lumen having an occluding member mounted thereto, the occluding member being movable between a collapsed condition and an expanded condition; inserting a venous cannula into a vein of the patient; coupling the venous cannula to a venous line; withdrawing blood from the patient through the venous cannula and the venous line; returning the blood to the patient through an arterial line coupled to the second lumen; positioning the occluding member in the patient's ascending aorta; expanding the occluding member to occlude the patient's ascending aorta; delivering cardioplegic fluid through the first lumen to thereby arrest the patient's heart; providing a venting catheter; passing the venting catheter through the patient's tricuspid and pulmonary valves; withdrawing blood from the patient using the venting catheter; providing a blood storage element having an inlet and an outlet; fluidly coupling the inlet of the blood storage element to the arterial line; and selectively changing a volume of blood in the blood storage element.
Claim 9
Dependent Claim
23 words
The method of claim 6 , further comprising the steps of: coupling the outlet of the blood storage element to the venous line.
Claim 10
Dependent Claim
22 words
The method of claim 7 , wherein: the withdrawing step is carried out with the venous cannula being coupled to a pump.
Claim 11
Dependent Claim
26 words
The method of claim 6 , wherein: the passing step is carried out with the first lumen and second lumen being carried by a single device.
Claim 12
Dependent Claim
24 words
The method of claim 6 , wherein: the passing step is carried out with the first lumen being slidable relative to the second lumen.
Claim 13
Independent Claim
137 words
A method of arresting a patient's heart and maintaining bypass support, comprising the steps of: inserting a venous cannula into a vein of a patient; coupling the venous cannula to an inlet of a pump, the pump having an outlet; withdrawing blood from the patient through the venous cannula using the pump; fluidly coupling the outlet of the pump to an arterial cannula through an arterial line; returning blood to the patient through the arterial cannula; inserting an aortic occlusion device through an artery of the patient, the aortic occlusion device having an occluding member; expanding the occluding member in the patient's ascending aorta thereby occluding the ascending aorta; delivering cardioplegic fluid to the ascending aorta through a lumen in the aortic occlusion device; and coupling the lumen of the aortic occlusion device to the pump intake.
Claim 14
Independent Claim
137 words
A method of arresting a patient's heart and maintaining bypass support, comprising the steps of: inserting a venous cannula into a vein of a patient; coupling the venous cannula to an inlet of a pump, the pump having an outlet; withdrawing blood from the patient through the venous cannula using the pump; fluidly coupling the outlet of the pump to an arterial cannula through an arterial line; returning blood to the patient through the arterial cannula; inserting an aortic occlusion device through an artery of the patient, the aortic occlusion device having an occluding member; expanding the occluding member in the patient's ascending aorta thereby occluding the ascending aorta; delivering cardioplegic fluid to the ascending aorta through a lumen in the aortic occlusion device; and coupling the lumen of the aortic occlusion device to the pump intake.
Claim 15
Dependent Claim
24 words
The method of claim 11 , wherein: the blood returning step is carried out with the aortic occlusion device passing through the arterial cannula.
Claim 16
Dependent Claim
17 words
The method of claim 11 , wherein: the arterial cannula and aortic occlusion device are integrally formed.
Claim 17
Dependent Claim
21 words
The method of claim 11 , further comprising: fluidly coupling the venous cannula and the arterial cannula with a bridge line.
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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) | 2005-09-02 | 2006-03-04 | 2006-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-09-02 | 2010-03-04 | 2010-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-09-02 | 2014-03-04 | 2014-09-03 | $7700.00 | Window Closed / Lapsed |