US5350388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hemostasis apparatus and method
Assignee: Albert Einstein College of Medicine
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Filing: 1992-06-03
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Granted: 1994-09-27
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Expires: 2012-06-03
Abstract
Abstract A kit for effecting hemostatis of an organ comprises a mesh and a sack. The mesh is formed of semirigid, bioabsorbable material adapted to be generally conformingly disposed on at least the bleeding surface of an organ. The sack is made of flexible, elastic, air-impermeable material adapted to be elastically stretched over the mesh and over a substantial portion of the organ and then released to compress the organ portion and thereby decrease the flow of blood thereto. The sack further permits operative attachment of the undersurface thereof to a vacuum source so that portions of the organ may be pulled outwardly by the vacuum into the interstices of the underlying mesh to promote hemostasis.
Inventors
- 👤 Adam Epstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:26
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B90/00; A61F; A61F2/00; A61F2/0063; A61B90/08; A61B2090/0815
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
49 words
Knit mesh for use in effecting hemostasis of an organ comprising a mesh of semirigid bioabsorbable knit material defining two layers inseparably knit together, each of said layers defining interstices with an interstice of one layer communicating with a plurality of only partially aligned interstices of the other layer.
Claim 2
Dependent Claim
49 words
Knit mesh for use in effecting hemostasis of an organ comprising a mesh of semirigid bioabsorbable knit material defining two layers inseparably knit together, each of said layers defining interstices with an interstice of one layer communicating with a plurality of only partially aligned interstices of the other layer.
Claim 3
Dependent Claim
56 words
Knit mesh for use in effecting hemostasis of an organ comprising a mesh of semirigid bioabsorbable knit material defining two inseparable layers, each of said layers defining interstices with an interstice of one layer communicating with a plurality of only partially aligned interstices of the other layer, the material being knit in a rice point stitch.
Claim 4
Dependent Claim
56 words
Knit mesh for use in effecting hemostasis of an organ comprising a mesh of semirigid bioabsorbable knit material defining two inseparable layers, each of said layers defining interstices with an interstice of one layer communicating with a plurality of only partially aligned interstices of the other layer, the material being knit in a rice point stitch.
Claim 5
Dependent Claim
45 words
Non-knit mesh for use in effecting hemostasis of an organ comprising a perforated membrane formed of a thin semirigid bioabsorbable, biocompatible non-knit material defining a plurality of truncated, generally conical and spaced apertures wherein the membrane is adapted to at least partially surround the organ.
Claim 6
Dependent Claim
45 words
Non-knit mesh for use in effecting hemostasis of an organ comprising a perforated membrane formed of a thin semirigid bioabsorbable, biocompatible non-knit material defining a plurality of truncated, generally conical and spaced apertures wherein the membrane is adapted to at least partially surround the organ.
Claim 7
Dependent Claim
30 words
The apparatus of claim 3 wherein the membrane surface to contact the organ defines protuberances disposed about each of said apertures and adapted to penetrate hard tissue of an organ.
Claim 8
Dependent Claim
30 words
The apparatus of claim 3 wherein said apertures are wider adjacent the membrane surface to contact the organ and narrower adjacent the membrane surface to be spaced from the organ.
Claim 9
Dependent Claim
12 words
The apparatus of claim 5 wherein said apertures are generally truncated cones.
Claim 10
Dependent Claim
79 words
Non-knit mesh for use in effecting hemostasis of an organ comprising a perforated membrane formed of a thin semirigid bioabsorbable non-knit material defining a plurality of apertures therethrough, said apertures being wider adjacent the membrane surface to contact the organ and narrower adjacent the membrane surface to be spaced from the organ, each of said apertures defining teeth projecting inwardly toward the longitudinal axis of said aperture and also toward said membrane surface to be spaced from the organ.
Claim 11
Dependent Claim
79 words
Non-knit mesh for use in effecting hemostasis of an organ comprising a perforated membrane formed of a thin semirigid bioabsorbable non-knit material defining a plurality of apertures therethrough, said apertures being wider adjacent the membrane surface to contact the organ and narrower adjacent the membrane surface to be spaced from the organ, each of said apertures defining teeth projecting inwardly toward the longitudinal axis of said aperture and also toward said membrane surface to be spaced from the organ.
Claim 12
Independent Claim
182 words
A device for effecting hemostasis of an organ comprising: (A) an air-permeable mesh of semirigid bioabsorbable material defining interstices and adapted to be generally conformingly disposed on at least the bleeding surface of an organ; and (B) a sack defining a continuous surface made of flexible, elastic, resilient air-impermeable material and an opening at one portion thereof adapted to enable passage of the bleeding surface of the organ therethrough, said elastic material being configured and dimensioned to be elastically stretched over said mesh and over a substantial portion of the organ and upon release to compress the organ portion and thereby decrease the flow of blood thereto; said sack further including means for the operative attachment of the undersurface thereof to a vacuum source so that portions of the organ may be pulled outwardly by the vacuum into the interstices of said underlying mesh to promote hemostasis; said mesh being a knit material defining two inseparable layers, each of said layers defining interstices with an interstice of one layer communicating with a plurality of only partially aligned interstices of the other layer.
Claim 13
Independent Claim
182 words
A device for effecting hemostasis of an organ comprising: (A) an air-permeable mesh of semirigid bioabsorbable material defining interstices and adapted to be generally conformingly disposed on at least the bleeding surface of an organ; and (B) a sack defining a continuous surface made of flexible, elastic, resilient air-impermeable material and an opening at one portion thereof adapted to enable passage of the bleeding surface of the organ therethrough, said elastic material being configured and dimensioned to be elastically stretched over said mesh and over a substantial portion of the organ and upon release to compress the organ portion and thereby decrease the flow of blood thereto; said sack further including means for the operative attachment of the undersurface thereof to a vacuum source so that portions of the organ may be pulled outwardly by the vacuum into the interstices of said underlying mesh to promote hemostasis; said mesh being a knit material defining two inseparable layers, each of said layers defining interstices with an interstice of one layer communicating with a plurality of only partially aligned interstices of the other layer.
Claim 14
Dependent Claim
16 words
The device of claim 8 wherein said knit material is knit in a rice point stitch.
Claim 15
Independent Claim
167 words
A device for effecting hemostasis of an organ comprising: (A) an air-permeable mesh of semirigid bioabsorbable material defining interstices and adapted to be generally conformingly disposed on at least the bleeding surface of an organ; and (B) a sack defining a continuous surface made of flexible, elastic, resilient air-impermeable material and an opening at one portion thereof adapted to enable passage of the bleeding surface of the organ therethrough, said elastic material being configured and dimensioned to be elastically stretched over said mesh and over a substantial portion of the organ and upon release to compress the organ portion and thereby decrease the flow of blood thereto; said sack further including means for the operative attachment of the undersurface thereof to a vacuum source so that portions of the organ may be pulled outwardly by the vacuum into the interstices of said underlying mesh to promote hemostasis; said mesh being a perforated membrane formed of a thin non-knit material defining a plurality of interstices defining apertures therethrough.
Claim 16
Independent Claim
167 words
A device for effecting hemostasis of an organ comprising: (A) an air-permeable mesh of semirigid bioabsorbable material defining interstices and adapted to be generally conformingly disposed on at least the bleeding surface of an organ; and (B) a sack defining a continuous surface made of flexible, elastic, resilient air-impermeable material and an opening at one portion thereof adapted to enable passage of the bleeding surface of the organ therethrough, said elastic material being configured and dimensioned to be elastically stretched over said mesh and over a substantial portion of the organ and upon release to compress the organ portion and thereby decrease the flow of blood thereto; said sack further including means for the operative attachment of the undersurface thereof to a vacuum source so that portions of the organ may be pulled outwardly by the vacuum into the interstices of said underlying mesh to promote hemostasis; said mesh being a perforated membrane formed of a thin non-knit material defining a plurality of interstices defining apertures therethrough.
Claim 17
Dependent Claim
28 words
The apparatus of claim 10 wherein the membrane surface to contact the organ defines protuberances disposed about said apertures and adapted to penetrate hard tissue of an organ.
Claim 18
Dependent Claim
30 words
The apparatus of claim 10 wherein said apertures are wider adjacent the membrane surface to contact the organ and narrower adjacent the membrane surface to be spaced from the organ.
Claim 19
Dependent Claim
12 words
The apparatus of claim 12 wherein said apertures are generally truncated cones.
Claim 20
Dependent Claim
33 words
The apparatus of claim 12 wherein each of said apertures defines teeth projecting inwardly toward the longitudinal axis of said aperture and also toward said membrane surface to be spaced from the organ.
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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) | 1997-09-26 | 1998-03-28 | 1998-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-26 | 2002-03-28 | 2002-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-26 | 2006-03-28 | 2006-09-27 | $7700.00 | Window Closed / Lapsed |