Patent US6350248B1 successfully refreshed from Google Patents.
US6350248B1
Expired / Lapsed
US
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Expandable myocardial implant
Assignee: Horizon Technology Funding Co LLC
•
Filing: 2000-04-13
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Granted: 2002-02-26
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Expires: 2020-04-13
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
2026-11-05 19:05
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: 33
Claim 1
Independent Claim
148 words
An apparatus for use in a coronary artery bypass procedure at a coronary vessel disposed lying at an exterior of a heart wall, the apparatus comprising; a hollow blood flow conduit having a first end sized to be inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber, said first end having sufficient radial rigidity to resist collapse of said first end in response to contraction of said heart; the conduit having a second end sized to be connected to the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second end being radially expandable within said vessel; and the conduit defining a blood flow path between the openings of the first and second ends.
Claim 2
Independent Claim
148 words
An apparatus for use in a coronary artery bypass procedure at a coronary vessel disposed lying at an exterior of a heart wall, the apparatus comprising; a hollow blood flow conduit having a first end sized to be inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber, said first end having sufficient radial rigidity to resist collapse of said first end in response to contraction of said heart; the conduit having a second end sized to be connected to the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second end being radially expandable within said vessel; and the conduit defining a blood flow path between the openings of the first and second ends.
Claim 3
Dependent Claim
14 words
An apparatus according to claim 1 wherein the conduit is a substantially L-shaped tube.
Claim 4
Dependent Claim
14 words
An apparatus according to claim 1 wherein the conduit is a substantially T-shaped tube.
Claim 5
Dependent Claim
21 words
An apparatus according to claim 1 wherein the blood flow path closes at least once during a cycle of the heart.
Claim 6
Dependent Claim
16 words
An apparatus according to claim 4 wherein the conduit includes a valve to close during diastole.
Claim 7
Dependent Claim
18 words
An apparatus according to claim 1 wherein the second end has an open cell construction within the vessel.
Claim 8
Dependent Claim
17 words
An apparatus according to claim 1 wherein the first end is radially expandable within the heart wall.
Claim 9
Dependent Claim
23 words
An apparatus according to claim 1 , wherein the first end of the conduit protrudes beyond an interior surface of the heart wall.
Claim 10
Independent Claim
180 words
An apparatus for use in a coronary artery bypass procedure at a coronary vessel disposed lying at an exterior of a heart wall, the apparatus comprising; a hollow blood flow conduit having a first end sized to be inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber, said first end having sufficient radial rigidity to resist collapse of said first end in response to contraction of said heart; the conduit having a second end sized to be connected to the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second end being radially expandable within said vessel; and the conduit defining a blood flow path between the openings of the first and second ends, wherein the conduit includes a reservoir for accumulating blood from the conduit during periods of high blood pressure and for discharging accumulated blood into the conduit during periods of low blood pressure.
Claim 11
Independent Claim
180 words
An apparatus for use in a coronary artery bypass procedure at a coronary vessel disposed lying at an exterior of a heart wall, the apparatus comprising; a hollow blood flow conduit having a first end sized to be inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber, said first end having sufficient radial rigidity to resist collapse of said first end in response to contraction of said heart; the conduit having a second end sized to be connected to the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second end being radially expandable within said vessel; and the conduit defining a blood flow path between the openings of the first and second ends, wherein the conduit includes a reservoir for accumulating blood from the conduit during periods of high blood pressure and for discharging accumulated blood into the conduit during periods of low blood pressure.
Claim 12
Dependent Claim
23 words
An apparatus according to claim 9 , wherein the first end of the conduit protrudes beyond an interior surface of the heart wall.
Claim 13
Independent Claim
181 words
A method for performing a coronary bypass procedure at a coronary vessel disposed lying on an exterior of a heart wall of a heart having a heart chamber, the method comprising: A. selecting a hollow blood flow conduit having: a. a first end sized for being inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber; b. the conduit having a second end sized for being inserted into the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second end being radially expandable within said vessel; and c. the conduit defining a blood flow path between the openings of the first and second ends; B. inserting the first end of the conduit through the heart wall with the first end in blood flow communication with the heart chamber; C. placing the second end of the conduit into the vessel and radially expanding the second end within the vessel.
Claim 14
Independent Claim
181 words
A method for performing a coronary bypass procedure at a coronary vessel disposed lying on an exterior of a heart wall of a heart having a heart chamber, the method comprising: A. selecting a hollow blood flow conduit having: a. a first end sized for being inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber; b. the conduit having a second end sized for being inserted into the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second end being radially expandable within said vessel; and c. the conduit defining a blood flow path between the openings of the first and second ends; B. inserting the first end of the conduit through the heart wall with the first end in blood flow communication with the heart chamber; C. placing the second end of the conduit into the vessel and radially expanding the second end within the vessel.
Claim 15
Dependent Claim
25 words
A method according to claim 11 wherein the blood flow path is formed by placing the conduit through a deep wall of the coronary vessel.
Claim 16
Dependent Claim
14 words
A method according to claim 11 wherein the coronary vessel is a coronary artery.
Claim 17
Dependent Claim
18 words
A method according to claim 11 comprising closing the blood flow path once per cycle of the heart.
Claim 18
Dependent Claim
15 words
A method according to claim 11 wherein the blood flow path is closed during diastole.
Claim 19
Dependent Claim
34 words
A method according to claim 11 wherein the second end has an open cell construction with said second end placed with openings of said open cell construction opposing an interior wall of said vessel.
Claim 20
Dependent Claim
27 words
A method according to claim 11 wherein the first end is radially expandable within the heart wall and radially expanding said first portion within said heart wall.
Claim 21
Dependent Claim
13 words
The method of claim 11 , wherein the heart is a human heart.
Claim 22
Dependent Claim
13 words
The method of claim 11 , wherein the conduit remains in the heart.
Claim 23
Dependent Claim
26 words
The method of claim 11 further comprising the steps of: closing an incision made during insertion of the conduit and leaving the conduit in the heart.
Claim 24
Dependent Claim
25 words
The method of claim 11 further comprising the steps of: withdrawing a catheter used to deliver the conduit and leaving the conduit in the heart.
Claim 25
Independent Claim
156 words
An apparatus for use in a coronary artery bypass procedure at a coronary vessel disposed lying at an exterior of a heart wall, the apparatus comprising; a hollow blood flow conduit having a first end sized for being inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber, said first end having a solid wall construction within said heart wall and sufficient radial rigidity to resist collapse of said first end in response to contraction of said heart; the conduit having a second end sized to be connected to the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second being radially expandable within said vessel; and the conduit defining a blood flow path between the openings of the first and second ends.
Claim 26
Independent Claim
156 words
An apparatus for use in a coronary artery bypass procedure at a coronary vessel disposed lying at an exterior of a heart wall, the apparatus comprising; a hollow blood flow conduit having a first end sized for being inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber, said first end having a solid wall construction within said heart wall and sufficient radial rigidity to resist collapse of said first end in response to contraction of said heart; the conduit having a second end sized to be connected to the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second being radially expandable within said vessel; and the conduit defining a blood flow path between the openings of the first and second ends.
Claim 27
Dependent Claim
23 words
An apparatus according to claim 22 , wherein the first end of the conduit protrudes beyond an interior surface of the heart wall.
Claim 28
Independent Claim
212 words
A method for performing a coronary bypass procedure at a coronary vessel disposed lying on an exterior of a heart wall of a heart having a heart chamber, the method comprising: A. selecting a hollow blood flow conduit having: a. a first end sized to be inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber, said first end having sufficient radial rigidity to resist collapse of said first end in response to contraction of said heart, said first end remaining open during both systole and diastole; b. the conduit having a second end sized to be inserted into the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second end being radially expandable within said vessel; and c. the conduit defining a blood flow path between the openings of the first and second ends; B. inserting the first end of the conduit through the heart wall with the first end in blood flow communication with the heart chamber; C. placing the second end of the conduit into the vessel and radially expanding the second end within the vessel.
Claim 29
Independent Claim
212 words
A method for performing a coronary bypass procedure at a coronary vessel disposed lying on an exterior of a heart wall of a heart having a heart chamber, the method comprising: A. selecting a hollow blood flow conduit having: a. a first end sized to be inserted into and retained within the heart wall of a heart chamber containing oxygenated blood with an opening of the first end in blood-flow communication with blood contained within the chamber, said first end having sufficient radial rigidity to resist collapse of said first end in response to contraction of said heart, said first end remaining open during both systole and diastole; b. the conduit having a second end sized to be inserted into the coronary vessel with an opening of the second end in blood flow communication with a lumen of the coronary vessel, said second end being radially expandable within said vessel; and c. the conduit defining a blood flow path between the openings of the first and second ends; B. inserting the first end of the conduit through the heart wall with the first end in blood flow communication with the heart chamber; C. placing the second end of the conduit into the vessel and radially expanding the second end within the vessel.
Claim 30
Dependent Claim
13 words
The method of claim 24 , wherein the heart is a human heart.
Claim 31
Dependent Claim
13 words
The method of claim 24 , wherein the conduit remains in the heart.
Claim 32
Dependent Claim
26 words
The method of claim 24 further comprising the steps of: closing an incision made during insertion of the conduit and leaving the conduit in the heart.
Claim 33
Dependent Claim
25 words
The method of claim 24 further comprising the steps of: withdrawing a catheter used to deliver the conduit and leaving the conduit in the heart.
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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) | 2005-02-25 | 2005-08-27 | 2006-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-02-25 | 2009-08-27 | 2010-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-02-25 | 2013-08-27 | 2014-02-26 | $7700.00 | Window Closed / Lapsed |