US4973300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac sling for circumflex coronary artery surgery
Assignee: PIONEERING TECHNOLOGIES Inc 3900 YOUNGFIELD ST WHEAT RIDGE CO 80033 A CORP OF
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Filing: 1989-09-22
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Granted: 1990-11-27
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Expires: 2009-09-22
Abstract
Abstract A cardiac sling for supporting the heart during surgery a support a polymeric film net of interconnecting ribs of polymeric material for applying, in use, sufficient pressure to the portions of the surface of the heart adjacent the ribs to prevent hemorrhage from the anastomotic site of bypass grafting is disclosed.
Inventors
- 👤 John T. M. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:59
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B90/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A cardiac sling for supporting the heart during surgery comprising: a support portion comprising a latticework of ribs surrounding a multiplicity of holes formed in an elastomeric film sheet, the lattice work being so constructed an configured such that the holes have a minimum diameter of from about 0.25 to about 0.75 inch and the ribs are from about 0.062 to about 0.312 inches wide as to apply, sufficient pressure to the portions of the surface of the heart adjacent there is to prevent hemorrhage from the anastomotic site by bypass grafting; and means for securing the support portion under the heart.
Claim 2
Dependent Claim
102 words
A cardiac sling for supporting the heart during surgery comprising: a support portion comprising a latticework of ribs surrounding a multiplicity of holes formed in an elastomeric film sheet, the lattice work being so constructed an configured such that the holes have a minimum diameter of from about 0.25 to about 0.75 inch and the ribs are from about 0.062 to about 0.312 inches wide as to apply, sufficient pressure to the portions of the surface of the heart adjacent there is to prevent hemorrhage from the anastomotic site by bypass grafting; and means for securing the support portion under the heart.
Claim 3
Dependent Claim
26 words
The cardiac sling of claim 1 wherein the elastomeric film sheet is formed of transparent polymer lightly colored a color which contrasts with blood and tissue.
Claim 4
Dependent Claim
25 words
The cardiac sling of claim 1 wherein the elastomeric film sheet is formed of polymeric material between about 0.005 and about 0.030 inches in thickness.
Claim 5
Dependent Claim
23 words
The cardiac sling of claim 1 wherein the elastomeric film sheet is formed of soft, smooth, matt finish, tear resistant, blood impervious polyurethane.
Claim 6
Dependent Claim
45 words
The cardiac sling of claim 1 wherein the means for securing the support portion under the heart comprises at least a pair of tapes extending from the support portion, at the support portion and tapes being formed of one unitary sheet of said polymeric film.
Claim 7
Dependent Claim
134 words
A cardiac sling for supporting the heart during surgery comprising: a support portion formed of soft, smooth, tear resistant, blood impervious transparent polyurethane colored with a color which contrasts with the color of tissue and blood having a matt finish between about 0.005 and about 0.030 inches in thickness, having a multiplicity of hexagonal holes having a diameter of from about 0.25 to about 0.75 inch as measured between opposed flat sides thereof separated by interconnecting ribs from about 0.062 to about 0.312 inches wide defining six sides thereof forming a net of said interconnecting ribs for applying, in use, sufficient pressure to the portions of the surface of the heart adjacent the ribs to prevent hemorrhage from the anastomotic site of bypass grafting; and means for securing the support portion under the heart.
Claim 8
Dependent Claim
134 words
A cardiac sling for supporting the heart during surgery comprising: a support portion formed of soft, smooth, tear resistant, blood impervious transparent polyurethane colored with a color which contrasts with the color of tissue and blood having a matt finish between about 0.005 and about 0.030 inches in thickness, having a multiplicity of hexagonal holes having a diameter of from about 0.25 to about 0.75 inch as measured between opposed flat sides thereof separated by interconnecting ribs from about 0.062 to about 0.312 inches wide defining six sides thereof forming a net of said interconnecting ribs for applying, in use, sufficient pressure to the portions of the surface of the heart adjacent the ribs to prevent hemorrhage from the anastomotic site of bypass grafting; and means for securing the support portion under the heart.
Claim 9
Dependent Claim
163 words
A cardiac sling for supporting the heart during surgery comprising: a support portion formed of soft, smooth, tear resistant, blood impervious transparent polyurethane film colored with a color which contrasts with the color of tissue and blood and having a matt finish, thefilm being between about 0.005 and about 0.030 inches in thickness, having a multiplicity of hexagonal holes having a diameter of from about 0.25 to about 0.75 inch as measured between opposed flat sides thereof separated by interconnecting ribs from about 0.062 to about 0.312 inches wide defining six sides thereof forming a net of said interconnecting ribs for applying, in use, sufficient pressure to the portions of the surface of the heart adjacent the ribs to prevent hemorrhage from the anastomotic site of bypass grafting; and at least a pair of tapes extending from the support portion for securing the support portion under the heart; the support portion and tapes being formed of one unitary sheet of said polyurethane film.
Claim 10
Dependent Claim
163 words
A cardiac sling for supporting the heart during surgery comprising: a support portion formed of soft, smooth, tear resistant, blood impervious transparent polyurethane film colored with a color which contrasts with the color of tissue and blood and having a matt finish, thefilm being between about 0.005 and about 0.030 inches in thickness, having a multiplicity of hexagonal holes having a diameter of from about 0.25 to about 0.75 inch as measured between opposed flat sides thereof separated by interconnecting ribs from about 0.062 to about 0.312 inches wide defining six sides thereof forming a net of said interconnecting ribs for applying, in use, sufficient pressure to the portions of the surface of the heart adjacent the ribs to prevent hemorrhage from the anastomotic site of bypass grafting; and at least a pair of tapes extending from the support portion for securing the support portion under the heart; the support portion and tapes being formed of one unitary sheet of said polyurethane film.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-26 | 1994-05-28 | 1994-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-26 | 1998-05-28 | 1998-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-26 | 2002-05-28 | 2002-11-27 | $7700.00 | Window Closed / Lapsed |