US5755682A
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US
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Method and apparatus for performing coronary artery bypass surgery
Assignee: Horizon Technology Funding Co LLC
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Filing: 1996-08-13
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Granted: 1998-05-26
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Expires: 2016-08-13
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. 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 01:20
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: 13
Claim 1
Independent Claim
230 words
An apparatus for use in a coronary artery bypass procedure at a human coronary artery on an exterior of a human heart wall, said apparatus comprising: a. A hollow blood flow conduit having a first end dimensioned for insertion into and retention within said human heart wall of a left ventricle containing oxygenated blood with an opening of said first end for providing blood flow communication with blood contained within said left ventricle; b. said conduit having a second end, said conduit further dimensioned for said second end to be positioned and retained within said human coronary artery with an opening of said second end positioned and dimensioned for providing blood flow communication with a lumen of said human coronary artery when said first end is within said human heart wall; c. Said conduit capable of defining a continuously open blood flow path between said openings of said first and second ends, said conduit being sufficiently rigid such that when placed within said human heart wall said blood flow path remains open during both diastole and systole; d. said conduit configured to substantially block flow from leaving said conduit other than through said first and second ends; and e. said conduit includes a reservoir for accumulating blood from said conduit during periods of high blood pressure and for discharging accumulated blood into said conduit during periods of low blood pressure.
Claim 2
Independent Claim
230 words
An apparatus for use in a coronary artery bypass procedure at a human coronary artery on an exterior of a human heart wall, said apparatus comprising: a. A hollow blood flow conduit having a first end dimensioned for insertion into and retention within said human heart wall of a left ventricle containing oxygenated blood with an opening of said first end for providing blood flow communication with blood contained within said left ventricle; b. said conduit having a second end, said conduit further dimensioned for said second end to be positioned and retained within said human coronary artery with an opening of said second end positioned and dimensioned for providing blood flow communication with a lumen of said human coronary artery when said first end is within said human heart wall; c. Said conduit capable of defining a continuously open blood flow path between said openings of said first and second ends, said conduit being sufficiently rigid such that when placed within said human heart wall said blood flow path remains open during both diastole and systole; d. said conduit configured to substantially block flow from leaving said conduit other than through said first and second ends; and e. said conduit includes a reservoir for accumulating blood from said conduit during periods of high blood pressure and for discharging accumulated blood into said conduit during periods of low blood pressure.
Claim 3
Independent Claim
220 words
An apparatus for use in a coronary bypass procedure at a human coronary vessel disposed lying on an exterior of a human heart wall, the apparatus comprising: a hollow blood flow conduit having a first end dimensioned for insertion into and retention within the human heart wall of a heart chamber containing oxygenated blood with an opening of the first end for providing blood-flow communication with blood contained within the chamber; the conduit having a second end disposed at an angle to the first end, the second end dimensioned for insertion into and retention within said human coronary vessel with an opening of the second end positioned and dimensioned for providing blood flow communication with a lumen of the human coronary vessel such that the second end can be substantially axially aligned with the human coronary vessel; the conduit capable of defining a continuously open blood flow path during both diastole and systole between the openings of the first and second ends and at least a portion of the conduit being sufficiently rigid such that when placed within said human heart wall said conduit remains open in response to contraction and relaxation of musculature of the human heart wall and; the conduit has a portion to block flow out of the conduit in a direction axially opposite the second end.
Claim 4
Independent Claim
220 words
An apparatus for use in a coronary bypass procedure at a human coronary vessel disposed lying on an exterior of a human heart wall, the apparatus comprising: a hollow blood flow conduit having a first end dimensioned for insertion into and retention within the human heart wall of a heart chamber containing oxygenated blood with an opening of the first end for providing blood-flow communication with blood contained within the chamber; the conduit having a second end disposed at an angle to the first end, the second end dimensioned for insertion into and retention within said human coronary vessel with an opening of the second end positioned and dimensioned for providing blood flow communication with a lumen of the human coronary vessel such that the second end can be substantially axially aligned with the human coronary vessel; the conduit capable of defining a continuously open blood flow path during both diastole and systole between the openings of the first and second ends and at least a portion of the conduit being sufficiently rigid such that when placed within said human heart wall said conduit remains open in response to contraction and relaxation of musculature of the human heart wall and; the conduit has a portion to block flow out of the conduit in a direction axially opposite the second end.
Claim 5
Dependent Claim
15 words
An apparatus according to claim 2 wherein the conduit is a substantially L-shaped, rigid tube.
Claim 6
Independent Claim
120 words
A method for performing a coronary bypass procedure at a coronary vessel disposed lying on an exterior of a heart wall, the method comprising: inserting a hollow conduit through the heart wall where the conduit defines a blood flow path between a heart chamber opening and a vessel opening and with the conduit selected so as to maintain the blood flow path open during both systole and diastole and with the heart chamber opening of the conduit in blood flow communication with the heart chamber; placing the vessel opening of the conduit within the vessel to direct blood to flow from the blood flow path into the vessel in a flow direction generally parallel with an axis of the vessel.
Claim 7
Independent Claim
120 words
A method for performing a coronary bypass procedure at a coronary vessel disposed lying on an exterior of a heart wall, the method comprising: inserting a hollow conduit through the heart wall where the conduit defines a blood flow path between a heart chamber opening and a vessel opening and with the conduit selected so as to maintain the blood flow path open during both systole and diastole and with the heart chamber opening of the conduit in blood flow communication with the heart chamber; placing the vessel opening of the conduit within the vessel to direct blood to flow from the blood flow path into the vessel in a flow direction generally parallel with an axis of the vessel.
Claim 8
Dependent Claim
27 words
A method according to claim 4 further comprising placing the vessel opening facing away from an obstruction which at least partially obstructs blood flow through the vessel.
Claim 9
Dependent Claim
25 words
A method according to claim 4 wherein the blood flow path is formed by placing the conduit through a deep wall of the coronary vessel.
Claim 10
Dependent Claim
14 words
A method according to claim 4 wherein the coronary vessel is a coronary artery.
Claim 11
Independent Claim
84 words
A method for performing a coronary bypass procedure at a coronary artery of a heart where the coronary artery has an obstruction at least partially obstructing flow of oxygenated blood through the coronary artery, the method comprising: selecting a site in the coronary artery distal to the obstruction; forming a blood flow path directly from a left ventricle of the heart into the coronary artery at the site distal to the obstruction with the blood flow path being open during both systole and diastole.
Claim 12
Independent Claim
84 words
A method for performing a coronary bypass procedure at a coronary artery of a heart where the coronary artery has an obstruction at least partially obstructing flow of oxygenated blood through the coronary artery, the method comprising: selecting a site in the coronary artery distal to the obstruction; forming a blood flow path directly from a left ventricle of the heart into the coronary artery at the site distal to the obstruction with the blood flow path being open during both systole and diastole.
Claim 13
Dependent Claim
54 words
A method according to claim 8 wherein the obstruction is, at least in part, artificially formed by placement of a conduit from the left ventricle to the coronary artery where the conduit has an opening discharging into the coronary artery and where the obstruction includes a portion of the conduit proximal to the opening.
References Cited (Backward Citations)
US2127983A
Cited
US3042021A
Cited
US4902289A
Cited
US4546499A
Cited
US4562597A
Cited
US4581017A
Cited
US4581017B1
Cited
US5275622A
Cited
US4862886A
Cited
US4769031A
Cited
US4712551A
Cited
US5071406A
Cited
US4995857A
Cited
US5505725A
Cited
US5054484A
Cited
US5489295A
Cited
EP0515867A2
Cited
WO1993000868A1
Cited
US5370685A
Cited
US5395349A
Cited
US5484418A
Cited
US5256150A
Cited
US5209731A
Cited
US5254097A
Cited
US5383925A
Cited
US5409019A
Cited
US5429144A
Cited
US5287861A
Cited
US5425705A
Cited
US5452733A
Cited
US5443497A
Cited
US5501698A
Cited
US5458574A
Cited
WO1995035065A1
Cited
WO1996000033A1
Cited
WO1996004854A1
Cited
WO1996005773A1
Cited
WO1997013463A1
Cited
WO1997013471A1
Cited
WO1997027898A1
Cited
WO1997027893A1
Cited
WO1997027897A1
Cited
US5662124A
Cited
US5655548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |