US6547821B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical procedures and devices for increasing cardiac output of the heart
Assignee: Maquet Cardiovascular LLC
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Filing: 1998-07-16
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Granted: 2003-04-15
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Expires: 2018-07-16
Abstract
Abstract Methods and devices for passively assisting the cardiac function of the heart are disclosed. A method of increasing the cardiac output of a heart includes providing a site of surgical access to the portion of the heart to be restrained, reducing the cardiac expansion of the portion of the heart to be restrained, and maintaining the reduction of cardiac expansion of the portion of the heart to be restrained for a substantial amount of time. Cardiac assist devices for increasing the cardiac output of the heart are disclosed comprising a reinforcing portion configured to contact a portion of the heart tissue wherein the reinforcing portion restricts the expansion of the portion of the heart tissue. The reinforcing portion can be a number of structures, including pads, frames, straps, and other retaining means for limiting cardiac expansion of the portion of the heart tissue to be restrained.
Inventors
- 👤 Charles S. Taylor
- 👤 Michael V. Morejohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/0401; A61B17/00234; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2478; A61F2/2481; A61B17/0487; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B2017/00535; A61B2017/00557; A61B17/0057; A61B2017/00575; A61B2017/00632; A61B2017/0404; A61B2017/0464; A61B2017/0496; A61B17/06; A61B2017/06052; A61B18/00; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392; A61F2/2487
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A method of passively increasing the cardiac output of a heart by restraining a portion of the heart, the method comprising the steps of: a) providing a site of surgical access to a portion of the heart to be restrained; b) reducing the cardiac expansion of the portion of the heart to be restrained; c) wherein the step of reducing the cardiac expansion of the portion of the heart to be restrained comprises applying a ventricular assist device to the surface of the heart, the ventricular assit device comprising a frame having at least one lateral support member connected to at least one vertical support member and a net attached to the frame, the frame and net being configured to surround the portion of the heart to be restrained; and d) maintaing the reduction of cardiac expansion of the portion of the heart to be restrained postoperatively.
Claim 2
Independent Claim
147 words
A method of passively increasing the cardiac output of a heart by restraining a portion of the heart, the method comprising the steps of: a) providing a site of surgical access to a portion of the heart to be restrained; b) reducing the cardiac expansion of the portion of the heart to be restrained; c) wherein the step of reducing the cardiac expansion of the portion of the heart to be restrained comprises applying a ventricular assist device to the surface of the heart, the ventricular assit device comprising a frame having at least one lateral support member connected to at least one vertical support member and a net attached to the frame, the frame and net being configured to surround the portion of the heart to be restrained; and d) maintaing the reduction of cardiac expansion of the portion of the heart to be restrained postoperatively.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the ventricular assist device further comprises a retaining strap attached to the frame.
Claim 4
Dependent Claim
50 words
The method of claim 2 , wherein the retaining strap has two ends, and further comprising the step of attaching the ventricular assist device to the heart by inserting the retaining strap through the heart and attaching each end of the retaining strap to the frame of the ventricular device.
Claim 5
Dependent Claim
30 words
The method of claim 1 , further comprising the step of bending the frame to place pressure on a specific area of the portion of the heart to be restrained.
Claim 6
Dependent Claim
30 words
The method of claim 1 , further comprising the step of bending the net to place pressure on a specific area of the portion of the heart to be restrained.
Claim 7
Dependent Claim
16 words
The method of claim 1 , wherein the frame and net are made of biocompatible material.
Claim 8
Dependent Claim
15 words
The method of claim 6 , wherein the biocompatible material is a relatively flexible material.
Claim 9
Dependent Claim
15 words
The method of claim 6 , wherein the biocompatible material is a relatively rigid material.
Claim 10
Dependent Claim
32 words
The method of claim 1 including the additional step of assessing the degree of cardiac assistance achieved from the reduction of cardiac expansion in the portion of the heart to be restrained.
Claim 11
Dependent Claim
31 words
The method of claim 1 further including the step of placing the patient on cardiopulmonary bypass prior to reducing the cardiac expansion of the portion of the heart to be restrained.
Claim 12
Dependent Claim
15 words
The method of claim 1 wherein the method is performed in a minimally invasive manner.
Claim 13
Dependent Claim
14 words
The method of claim 1 wherein the method is performed on a beating 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) | 2006-04-14 | 2006-10-14 | 2007-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-04-14 | 2010-10-14 | 2011-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-04-14 | 2014-10-14 | 2015-04-15 | $7700.00 | Window Closed / Lapsed |