US5944019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed chest coronary bypass
Assignee: Horizon Technology Funding Co LLC
•
Filing: 1997-06-25
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Granted: 1999-08-31
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Expires: 2017-06-25
Abstract
Abstract A method and apparatus for performing coronary artery bypass surgery establishes a channel leading directly from a chamber of a heart into a coronary artery with said channel retained open during both diastole and systole. The coronary artery bypass procedure may be performed with or without cardiopulmonary bypass.
Inventors
- 👤 Mark B. Knudson
- 👤 William L. Giese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:45
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/12; A61B17/12022; A61B17/12027; A61B17/1204; A61B17/12045; A61B17/12131; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/064; A61F2/07; A61F2/24; A61F2/2493; A61F2/82; A61F2/856; A61F2/86; A61F2/90; A61F2/95; A61F2/954; A61F2/958; A61B17/34; A61B17/3415; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B2017/1107; A61B2017/1135; A61B2017/12127; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392; A61F2002/061; A61F2002/065; A61F2002/068; A61F2002/821; A61F2240/00; A61F2240/001; A61F2240/008; Y; Y10; Y10S; Y10S623/00; Y10S623/902; Y10S623/903
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
100 words
A method for performing a coronary vessel bypass procedure for supplementing a flow of blood to a coronary vessel, the method comprising: forming a blood flow path from a heart chamber directly to the coronary vessel at a site in the vessel positioned between an obstruction in the vessel and tissue of the heart to be supplied with blood by the vessel; and the forming including placing a conduit in a heart wall between the chamber and the vessel with a first end of the conduit protruding into the chamber and protruding beyond an interior surface of the heart wall.
Claim 2
Independent Claim
100 words
A method for performing a coronary vessel bypass procedure for supplementing a flow of blood to a coronary vessel, the method comprising: forming a blood flow path from a heart chamber directly to the coronary vessel at a site in the vessel positioned between an obstruction in the vessel and tissue of the heart to be supplied with blood by the vessel; and the forming including placing a conduit in a heart wall between the chamber and the vessel with a first end of the conduit protruding into the chamber and protruding beyond an interior surface of the heart wall.
Claim 3
Dependent Claim
39 words
A method according to claim 1 wherein the conduit is selected with a cross-sectional area sufficient for blood to flow through the conduit at a volumetric flow rate to effectively reduce signs and symptoms of reduced coronary blood flow.
Claim 4
Dependent Claim
72 words
A method according to claim 1 comprising: a. inserting the first end into the chamber through the heart wall and retaining the conduit in the heart wall and with the first end in blood flow communication with the blood within the chamber; and b. connecting the second end to the coronary vessel for blood to flow from the second end substantially aligned with an axis of a lumen of the coronary vessel.
Claim 5
Dependent Claim
26 words
A method according to claim 1 further comprising at least partially reducing blood flow through the conduit during diastole by partially obstructing the conduit during diastole.
Claim 6
Dependent Claim
41 words
A method according to claim 1 comprising directing blood flow through the conduit to reduce direct impingement of the blood flow upon a wall of the coronary vessel by providing a deflecting surface positioned in the path of such direct impingement.
Claim 7
Dependent Claim
22 words
A method according to claim 1 comprising forming the path through the heart wall and through a lower surface of the vessel.
Claim 8
Independent Claim
18 words
A method according to claims 1, 3, 4, 5, or 6 wherein the vessel is a coronary artery.
Claim 9
Dependent Claim
16 words
A method according to claim 1 wherein the conduit is open during both diastole and systole.
Claim 10
Independent Claim
128 words
A method for performing a coronary bypass procedure for supplementing a flow of blood to a coronary vessel, the method comprising: forming a blood flow passageway from a heart chamber directly to the coronary vessel at a site in the vessel with the site positioned between an obstruction in the vessel and tissue of the heart to be supplied with blood from the vessel; and deflecting blood flowing from the heart chamber to the vessel for the blood to be deflected into the vessel without substantial impingement of the blood on a wall of the vessel and wherein the deflecting is provided by a deflection surface positioned between the vessel and the passageway to redirect blood flow from the heart chamber to a flow direction into the vessel.
Claim 11
Independent Claim
128 words
A method for performing a coronary bypass procedure for supplementing a flow of blood to a coronary vessel, the method comprising: forming a blood flow passageway from a heart chamber directly to the coronary vessel at a site in the vessel with the site positioned between an obstruction in the vessel and tissue of the heart to be supplied with blood from the vessel; and deflecting blood flowing from the heart chamber to the vessel for the blood to be deflected into the vessel without substantial impingement of the blood on a wall of the vessel and wherein the deflecting is provided by a deflection surface positioned between the vessel and the passageway to redirect blood flow from the heart chamber to a flow direction into the vessel.
Claim 12
Dependent Claim
16 words
A method according to claim 9 wherein the passageway is open during both diastole and systole.
Claim 13
Dependent Claim
44 words
A method according to claim 9 wherein the forming includes placing a conduit in a heart wall between the chamber and the vessel with a first end of the conduit protruding into the chamber and protruding beyond an interior surface of the heart wall.
Claim 14
Independent Claim
16 words
A method according to claims 9, 10, or 11 wherein the vessel is a coronary artery.
Claim 15
Independent Claim
77 words
A method for performing a coronary bypass procedure at a coronary vessel of a heart, the method comprising: forming a blood flow passageway directly from a left ventricle of the heart into the coronary vessel at a site in the vessel with the site positioned between an obstruction in the vessel and tissue of the heart to be supplied with blood from the vessel and with the blood flow path being open during both systole and diastole.
Claim 16
Independent Claim
77 words
A method for performing a coronary bypass procedure at a coronary vessel of a heart, the method comprising: forming a blood flow passageway directly from a left ventricle of the heart into the coronary vessel at a site in the vessel with the site positioned between an obstruction in the vessel and tissue of the heart to be supplied with blood from the vessel and with the blood flow path being open during both systole and diastole.
Claim 17
Dependent Claim
16 words
A method according to claim 13 wherein the blood flow passageway is partially closed during diastole.
Claim 18
Dependent Claim
17 words
A method according to claim 1 wherein the obstruction is a naturally occurring occlusion in the vessel.
Claim 19
Dependent Claim
17 words
A method according to claim 9 wherein the obstruction is a naturally occurring occlusion in the vessel.
Claim 20
Dependent Claim
17 words
A method according to claim 13 wherein the obstruction is a naturally occurring occlusion in the vessel.
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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) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |