US6682499B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for venous drainage and retrograde coronary perfusion
Assignee: Indian Wells Medical Inc
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Filing: 2001-06-28
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Granted: 2004-01-27
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Expires: 2021-06-28
Abstract
Abstract A system is disclosed for cannulating the vena cava of a patient during cardiopulmonary bypass procedures. Such cannulation is necessary for drainage of venous blood from the patient so that it may be oxygenated and pumped back to the patient to perfuse tissues during cardiac surgery and, more specifically, during periods of ischemic cardiac arrest or dysfunction. The device of the present invention not only provides venous drainage for cardiopulmonary bypass, but also performs the function of routing cardioplegic solution through the heart in the retrograde direction. Such cardioplegia provides protection to the heart during periods of ischemic cardiac arrest. This invention replaces a plurality of cannulae currently used for open-heart surgery, thus simplifying the surgical field and improving visibility of the heart.
Inventors
- 👤 Jay Alan Lenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3653; A61M1/3613; A61M1/3659; A61M1/3664; A61M25/00; A61M25/10; A61M25/1011; A61M2025/1013; A61M2202/00; A61M2202/04; A61M2202/0468; A61M2202/047
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A method of cannulating a patient's heart during cardiopulmonary bypass comprising the steps of: inserting a cannula into a venous system of the patient; positioning the cannula so that said cannula traverses a right atrium and extends into both a superior and an inferior vena cava; enabling an occlusion device in each of the superior and inferior vena cava; draining venous blood from the vena cava and; infusing cardioplegia solution into the right atrium of the heart, and infusing said cardioplegia solution, retrograde, into the coronary sinus without cannulating the coronary sinus, wherein all steps are performed by use of a single cannula.
Claim 2
Independent Claim
103 words
A method of cannulating a patient's heart during cardiopulmonary bypass comprising the steps of: inserting a cannula into a venous system of the patient; positioning the cannula so that said cannula traverses a right atrium and extends into both a superior and an inferior vena cava; enabling an occlusion device in each of the superior and inferior vena cava; draining venous blood from the vena cava and; infusing cardioplegia solution into the right atrium of the heart, and infusing said cardioplegia solution, retrograde, into the coronary sinus without cannulating the coronary sinus, wherein all steps are performed by use of a single cannula.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the cannula is routed to the heart, through the veins, from the jugular vein.
Claim 4
Dependent Claim
20 words
The method of claim 1 further comprising the step of measuring the pressure in the right atrium of the heart.
Claim 5
Dependent Claim
26 words
The method of claim 1 wherein the cardioplegia solution is directed into the coronary sinus by the occlusion devices in the superior and inferior vena cava.
Claim 6
Dependent Claim
18 words
The method of claim 1 wherein the occlusion devices in the superior and inferior vena cava are balloons.
Claim 7
Dependent Claim
21 words
The method of claim 1 wherein the distance between the occlusion devices in the superior and inferior vena cava is adjustable.
References Cited (Backward Citations)
US5021045A
Cited
US5558644A
Cited
US5324260A
Cited
US5620418A
Cited
US5562606A
Cited
US5385548A
Cited
USRE36386E
Cited
US5820586A
Cited
US5597377A
Cited
US6398752B1
Cited
US5800375A
Cited
US5658309A
Cited
US5697905A
Cited
US5707358A
Cited
US5919163A
Cited
US5961536A
Cited
US6110139A
Cited
US6099498A
Cited
US6210363B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-01-26 | 2007-07-28 | 2008-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-01-26 | 2011-07-28 | 2012-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-01-26 | 2015-07-28 | 2016-01-27 | $7700.00 | Window Closed / Lapsed |