US6602184B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable cardiac harness for treating congestive heart failure
Assignee: Paracor Medical Inc
•
Filing: 2001-09-10
•
Granted: 2003-08-05
•
Expires: 2021-09-10
Abstract
Abstract A cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond which the heart cannot expand, the harness provides no hard limit over the range of diastolic expansion of the ventricle. Instead, the harness follows the contour of the heart throughout diastole and continuously exerts gentle resistance to stretch. Also disclosed is a method of delivering the cardiac harness to the heart minimally invasively.
Inventors
- 👤 Lilip Lau
- 👤 Bill Hartigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:56
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2478; A61F2/2481; A61M; A61M60/00; A61M60/10; A61M60/122; A61M60/126; A61M60/148; A61M60/165; A61M60/191; A61M60/40; A61M60/424; A61M60/438; A61M60/80; A61M60/855; A61M60/871; A61M60/873; A61M60/882; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/0587; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/3627; A61F2/0063; A61F2002/0072; A61F2002/2484; A61M2205/00; A61M2205/02; A61M2205/0266; A61M2205/33; A61M2205/3303; A61M2205/35; A61M2205/3507; A61M2205/3523; A61M2205/82; A61M2205/8206; A61M2205/8237; A61M2205/8243; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49995
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
153 words
A system comprising a cardiac harness and an apparatus for delivering the cardiac harness, the harness having side portions and an apex portion, the apparatus comprising: a catheter body having a distal end portion, configured to retain said harness in a substantially inverted condition with an interior side of the harness facing outward away from a ventricle and an exterior side facing inward toward said ventricle, the distal end portion comprising a suction cup; an activation member which is movable relative to said catheter body, the apex portion of said harness releasably connected to the catheter body, said activation member driving said side portions of said harness distally and outwardly relative to said apex portion such that said harness expands circumferentially, whereby said harness evens to at least partially surround the ventricle, with said interior side of the harness facing inward toward said ventricle and said exterior side facing away from said ventricle.
Claim 2
Independent Claim
153 words
A system comprising a cardiac harness and an apparatus for delivering the cardiac harness, the harness having side portions and an apex portion, the apparatus comprising: a catheter body having a distal end portion, configured to retain said harness in a substantially inverted condition with an interior side of the harness facing outward away from a ventricle and an exterior side facing inward toward said ventricle, the distal end portion comprising a suction cup; an activation member which is movable relative to said catheter body, the apex portion of said harness releasably connected to the catheter body, said activation member driving said side portions of said harness distally and outwardly relative to said apex portion such that said harness expands circumferentially, whereby said harness evens to at least partially surround the ventricle, with said interior side of the harness facing inward toward said ventricle and said exterior side facing away from said ventricle.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 , wherein the activation member comprises a plurality of fingers.
Claim 4
Dependent Claim
22 words
The apparatus of claim 2 , wherein the plurality of fingers extend radially outwardly when moved distally out of the catheter body.
Claim 5
Independent Claim
78 words
A method of delivering a cardiac harness, comprising: providing a catheter having an inverted harness mounted on a distal end portion of said catheter; providing an apparatus for applying a negative pressure; inserting said catheter into a thorax such that an apex portion of said inverted harness is proximate to the apex of a ventricle; and everting side portions of said harness while said apex portion of said harness remains positioned proximate to an apex of said ventricle.
Claim 6
Independent Claim
78 words
A method of delivering a cardiac harness, comprising: providing a catheter having an inverted harness mounted on a distal end portion of said catheter; providing an apparatus for applying a negative pressure; inserting said catheter into a thorax such that an apex portion of said inverted harness is proximate to the apex of a ventricle; and everting side portions of said harness while said apex portion of said harness remains positioned proximate to an apex of said ventricle.
Claim 7
Dependent Claim
12 words
The method of claim 4 , wherein said cardiac harness comprises Nitinol.
Claim 8
Dependent Claim
17 words
The method of claim 4 , wherein the apparatus for applying negative pressure comprises a suction cup.
Claim 9
Independent Claim
126 words
A method of delivering a cardiac harness, comprising: providing a catheter having an inverted harness mounted on a distal end portion of said catheter; providing at least one delivery member; arranging a distal end of the delivery member adjacent an outer surface of the inverted harness; inserting said catheter into a thorax such that an apex portion of said inverted harness is proximate to the apex of a ventricle; and moving the delivery member distally relative to the catheter so that the delivery member simultaneously pushes the harness out of the catheter and evens the harness into position on the heart so that side portions of said harness are everted while said apex portion of said harness remains positioned proximate to an apex of said ventricle.
Claim 10
Independent Claim
126 words
A method of delivering a cardiac harness, comprising: providing a catheter having an inverted harness mounted on a distal end portion of said catheter; providing at least one delivery member; arranging a distal end of the delivery member adjacent an outer surface of the inverted harness; inserting said catheter into a thorax such that an apex portion of said inverted harness is proximate to the apex of a ventricle; and moving the delivery member distally relative to the catheter so that the delivery member simultaneously pushes the harness out of the catheter and evens the harness into position on the heart so that side portions of said harness are everted while said apex portion of said harness remains positioned proximate to an apex of said ventricle.
Claim 11
Dependent Claim
15 words
The method of claim 7 additionally comprising providing an apparatus for applying a negative pressure.
Claim 12
Dependent Claim
21 words
The method of claim 8 additionally comprising applying a negative pressure while moving the delivery member distally relative to the catheter.
Claim 13
Dependent Claim
18 words
The method of claim 9 , wherein the apparatus for applying a negative pressure comprises a suction cup.
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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) | 2006-08-04 | 2007-02-03 | 2007-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-08-04 | 2011-02-03 | 2011-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-08-04 | 2015-02-03 | 2015-08-05 | $7700.00 | Window Closed / Lapsed |