US6200280B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac massage apparatus and method
Assignee: TheraCardia Inc
•
Filing: 1998-05-29
•
Granted: 2001-03-13
•
Expires: 2018-05-29
Abstract
Abstract A device for performing minimally invasive closed chest heart massage comprises a support having a plurality of curved, deployable struts, optionally carrying a sheet or inflatable bladder for engaging the pericardium. The struts are delivered to the space between the pericardium and the posterior rib cage in a radially collapsed configuration and deployed radially outwardly with minimum advancement in the axial direction.
Inventors
- 👤 Rodney A. Brenneman
- 👤 Jay A. Lenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
A; A61; A61H; A61H31/00; A61H31/004; A61H31/007; A61M; A61M60/00; A61M60/20; A61M60/289; A61M60/40; A61M60/465; A61M60/468; A61M60/47; A61M60/473; A61H2031/001
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
75 words
A method for performing cardiac massage, said method comprising: advancing a plurality of struts through an intercostal space to a region over a pericardium; opening the struts along arcuate radially diverging paths between a posterior rib surface and the pericardium, wherein the distal tips of the struts are peripherally constrained by a torroidal bladder; inflating the torroidal bladder; and engaging the opened struts and inflated torroidal bladder against the pericardium to periodically compress the heart.
Claim 2
Independent Claim
75 words
A method for performing cardiac massage, said method comprising: advancing a plurality of struts through an intercostal space to a region over a pericardium; opening the struts along arcuate radially diverging paths between a posterior rib surface and the pericardium, wherein the distal tips of the struts are peripherally constrained by a torroidal bladder; inflating the torroidal bladder; and engaging the opened struts and inflated torroidal bladder against the pericardium to periodically compress the heart.
Claim 3
Dependent Claim
28 words
A method as in claim 1 , further comprising bluntly dissecting a space between the posterior rib surface and the pericardium prior to advancing the plurality of struts.
Claim 4
Dependent Claim
19 words
A method as in claim 2 , wherein bluntly dissecting comprises advancing a blunt member disposed between said struts.
Claim 5
Dependent Claim
32 words
A method as in claim 3 , further comprising advancing a blade from the blunt member to partially cut through intercostal skin and retracting the blade prior to advancing the blunt member.
Claim 6
Dependent Claim
18 words
A method as in claim 1 , wherein the bladder is inflated while the struts are being opened.
Claim 7
Dependent Claim
17 words
A method as in claim 1 , wherein the bladder is inflated after the struts are opened.
Claim 8
Independent Claim
48 words
A method for performing cardiac massage, said method comprising: engaging a plurality of struts arranged in radially diverging, arcuate paths against a pericardium, wherein the distal tips of the struts are peripherally constrained by an inflated torroidal bladder; and reciprocating the struts against the pericardium to induce circulation.
Claim 9
Independent Claim
48 words
A method for performing cardiac massage, said method comprising: engaging a plurality of struts arranged in radially diverging, arcuate paths against a pericardium, wherein the distal tips of the struts are peripherally constrained by an inflated torroidal bladder; and reciprocating the struts against the pericardium to induce circulation.
Claim 10
Independent Claim
99 words
A method for performing cardiac massage, said method comprising: advancing a blade from a blunt member to partially cut through intercostal skin over the pericardium of the patient; retracting the blade; advancing the blunt member to bluntly dissect an intercostal space between the posterior rib surface and the pericardium after the blade has been retracted; advancing a plurality of struts through the intercostal space to a region over a pericardium; opening the struts along arcuate radially diverging paths between a posterior rib surface and the pericardium; and engaging the opened struts against the pericardium to periodically compress the heart.
Claim 11
Independent Claim
99 words
A method for performing cardiac massage, said method comprising: advancing a blade from a blunt member to partially cut through intercostal skin over the pericardium of the patient; retracting the blade; advancing the blunt member to bluntly dissect an intercostal space between the posterior rib surface and the pericardium after the blade has been retracted; advancing a plurality of struts through the intercostal space to a region over a pericardium; opening the struts along arcuate radially diverging paths between a posterior rib surface and the pericardium; and engaging the opened struts against the pericardium to periodically compress the heart.
Claim 12
Dependent Claim
26 words
A method as in claim 8 , further comprising unfurling a flexible sheet attached to at least some of the struts as the struts are opened.
Claim 13
Dependent Claim
20 words
A method as in claim 8 , further comprising inflating a bladder attached to at least some of the struts.
Claim 14
Dependent Claim
18 words
A method as in claim 10 , wherein the bladder is inflated while the struts are being opened.
Claim 15
Dependent Claim
17 words
A method as in claim 10 , wherein the bladder is inflated after the struts are opened.
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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) | 2004-03-12 | 2004-09-11 | 2005-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-12 | 2008-09-11 | 2009-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-12 | 2012-09-11 | 2013-03-13 | $7700.00 | Window Closed / Lapsed |