US5186711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hemostasis apparatus and method
Assignee: Albert Einstein College of Medicine
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Filing: 1991-05-28
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Granted: 1993-02-16
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Expires: 2011-05-28
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 01:49
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B90/00; A61F; A61F2/00; A61F2/0063; A61B90/08; A61B2090/0815
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
146 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 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.
Claim 2
Independent Claim
146 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 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.
Claim 3
Dependent Claim
24 words
The device of claim 1 wherein said sack is adapted to be generally conformingly disposed on at least the bleeding surface of a spleen.
Claim 4
Dependent Claim
34 words
The device of claim 1 wherein said sack upon release effects an at least partially operative seal with the organ about the bleeding surface thereof to at least decrease the flow of blood thereto.
Claim 5
Dependent Claim
13 words
The device of claim 1 wherein said sack is made of bioabsorbable material.
Claim 6
Dependent Claim
13 words
The device of claim 1 wherein said sack is made of non-bioabsorbable material.
Claim 7
Independent Claim
28 words
The device of claim wherein said sack is sufficiently resilient to be elastically stretched and then released to conform said mesh to the bleeding surface of the organ.
Claim 8
Dependent Claim
52 words
The device of claim 1 wherein said sack is made of an elastic material which is sufficiently elastic to reduce the size of the organ portion and thereby create a back pressure reducing or terminating blood flow thereinto and to generally conform said mesh to the outer surface of the organ portion.
Claim 9
Dependent Claim
46 words
The device of claim 1 wherein said mesh is made of a semirigid material which is sufficiently rigid to preclude deformation under the vacuum created by the vacuum source but sufficiently flexible to be substantially conformed over the bleeding surface of the organ by said sack.
Claim 10
Dependent Claim
76 words
The device of claim 1 wherein said mesh contains a plurality of interlocked layers, at least some of the interstices of one layer of said mesh being partially offset from the interstices of an adjacent layer of said mesh, whereby some portions of the organ pulled outwardly by the vacuum into the interstices of said mesh are also pulled at an angle to the thickness of said mesh, thereby to promote joinder of some adjacent portions.
Claim 11
Dependent Claim
13 words
The device of claim 1 wherein said mesh is a rice point knit.
Claim 12
Dependent Claim
14 words
The device of claim 1 wherein said mesh is substantially coextensive with said sack.
Claim 13
Dependent Claim
40 words
The device of claim 11 wherein said sack and said mesh are both bioabsorbable and joined together as outer and inner layers, respectively, of a composite sack/mesh, whereby said composite sack/mesh may be applied as a unit to the organ.
Claim 14
Dependent Claim
19 words
The device of claim 1 wherein said sack is disposed directly over said mesh without any intervening material therebetween.
Claim 15
Independent Claim
104 words
A method of effecting hemostasis of an organ comprising the steps of: (A) applying an air-permeable mesh of semirigid bioabsorbable material defining interstices to at least the bleeding surface of an organ in generally conformingly disposition; (B) elastically stretching a sack made of flexible, elastic resilient, air-impermeable material over the mesh and over a substantial portion of the organ and then releasing the sack to compress the organ portion and thereby decrease the flow of blood thereto; and (C) applying a vacuum to the undersurface of the sack to pull portions of the organ into the interstices of the underlying mesh to promote hemostasis.
Claim 16
Independent Claim
104 words
A method of effecting hemostasis of an organ comprising the steps of: (A) applying an air-permeable mesh of semirigid bioabsorbable material defining interstices to at least the bleeding surface of an organ in generally conformingly disposition; (B) elastically stretching a sack made of flexible, elastic resilient, air-impermeable material over the mesh and over a substantial portion of the organ and then releasing the sack to compress the organ portion and thereby decrease the flow of blood thereto; and (C) applying a vacuum to the undersurface of the sack to pull portions of the organ into the interstices of the underlying mesh to promote hemostasis.
Claim 17
Dependent Claim
17 words
The method of claim 14 wherein the sack is applied to the bleeding surface of a spleen.
Claim 18
Dependent Claim
44 words
The method of claim 14 wherein the sack is applied over the substantial organ portion so that upon release it effects an at least partially operative seal with the organ about the bleeding surface thereof to at least decrease the flow of blood thereto.
Claim 19
Dependent Claim
13 words
The method of claim 14 wherein the sack is made of bioabsorbable material.
Claim 20
Dependent Claim
14 words
The method of claim 14 wherein the sack is made of non bioabsorbable material.
Claim 21
Dependent Claim
20 words
The method of claim 14 wherein upon release the sack conforms the mesh to the bleeding surface of the organ.
Claim 22
Dependent Claim
50 words
The method of claim 14 wherein the sack is made of an elastic material which is sufficiently resilient to reduce the size of the organ and thereby create a back pressure reducing or terminating blood flow thereinto and to generally conform said mesh to the outer surface of the organ.
Claim 23
Dependent Claim
45 words
The method of claim 14 wherein the mesh is made of a semirigid material which is sufficiently rigid to preclude deformation under the vacuum created under the sack but sufficiently flexible to be substantially conformed over the bleeding surface of the organ by the sack.
Claim 24
Dependent Claim
75 words
The method of claim 14 wherein the mesh contains a plurality of layers, at least some of the interstices of one layer of said mesh being partially offset from the interstices of an adjacent layer of said mesh, whereby some portions of the organ pulled outwardly by the vacuum into the interstices of the mesh are also pulled at an angle to the thickness of said mesh, thereby to promote joinder of some adjacent portions.
Claim 25
Dependent Claim
13 words
The method of claim 14 wherein the mesh is a rice point knit.
Claim 26
Dependent Claim
14 words
The method of claim 14 wherein the mesh is substantially coextensive with the sack.
Claim 27
Dependent Claim
42 words
The method of claim 24 wherein the sack and the mesh are both bioabsorbable and joined together as outer and inner layers, respectively, of a composite sack/mesh so that the mesh and sack are applied together as a unit to the organ.
Claim 28
Dependent Claim
122 words
In combination, to effect hemostasis of the bleeding surface of an organ: (A) an air-permeable mesh of semirigid bioabsorbable material defining interstices and conformingly disposed on at least the bleeding surface of the organ; and (B) a sack defining a continuous surface made of flexible, elastic, resilient air-impermeable material and an opening at one portion thereof, said elastic material being disposed over said mesh and over a substantial portion of the organ to compress the organ portion and thereby decrease the flow of blood thereto; (C) a vacuum source; and (D) means operatively attaching said vacuum source and said sack so that portions of the organ are pulled outwardly by the vacuum into the interstices of said underlying mesh to promote hemostasis.
Claim 29
Dependent Claim
122 words
In combination, to effect hemostasis of the bleeding surface of an organ: (A) an air-permeable mesh of semirigid bioabsorbable material defining interstices and conformingly disposed on at least the bleeding surface of the organ; and (B) a sack defining a continuous surface made of flexible, elastic, resilient air-impermeable material and an opening at one portion thereof, said elastic material being disposed over said mesh and over a substantial portion of the organ to compress the organ portion and thereby decrease the flow of blood thereto; (C) a vacuum source; and (D) means operatively attaching said vacuum source and said sack so that portions of the organ are pulled outwardly by the vacuum into the interstices of said underlying mesh to promote hemostasis.
Claim 30
Dependent Claim
50 words
The combination of claim 26 wherein said sack is made of bioabsorbable material, and said vacuum source is disposed outside of the body containing the organ, said combination additionally including means for releasably securing said attaching means and said sack, said releasable securing means being releasable from outside the body.
Claim 31
Dependent Claim
40 words
The device of claim 27 wherein said sack and said mesh are both bioabsorbable and joined together as outer and inner layers, respectively, of a composite sack/mesh, whereby said composite sack/mesh may be applied as a unit to the organ.
Claim 32
Dependent Claim
19 words
The combination of claim 26 wherein said sack is disposed directly over said mesh without any intervening material therebetween.
Claim 33
Independent Claim
298 words
A device for effecting hemostasis of a spleen 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, said mesh containing a plurality of interlocked layers, at least some of the interstices of one layer of said mesh being partially offset from the interstices of an adjacent layer of said mesh, whereby some portions of the organ pulled outwardly by a vacuum into the interstices of said mesh are also pulled at an angle to the thickness of said mesh, thereby to promote joinder of some adjacent portions; and (B) a sack defining a continuous surface made of flexible, elastic, resilient air-impermeable material and an opening at one portion thereof, 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 conform said mesh to the bleeding surface of the organ and to compress the organ portion, thereby decreasing the flow of blood thereto, said elastic material being sufficiently elastic to reduce the size of the organ portion and thereby create a back pressure reducing or terminating blood flow thereinto and to generally conform said mesh to the outer surface of the organ portion, said sack further including means for 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 coextensive with said sack and made of a semirigid material sufficiently rigid to preclude deformation under the vacuum created by the vacuum source but sufficiently flexible to be substantially conformed over the bleeding surface of the organ by said sack.
Claim 34
Independent Claim
298 words
A device for effecting hemostasis of a spleen 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, said mesh containing a plurality of interlocked layers, at least some of the interstices of one layer of said mesh being partially offset from the interstices of an adjacent layer of said mesh, whereby some portions of the organ pulled outwardly by a vacuum into the interstices of said mesh are also pulled at an angle to the thickness of said mesh, thereby to promote joinder of some adjacent portions; and (B) a sack defining a continuous surface made of flexible, elastic, resilient air-impermeable material and an opening at one portion thereof, 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 conform said mesh to the bleeding surface of the organ and to compress the organ portion, thereby decreasing the flow of blood thereto, said elastic material being sufficiently elastic to reduce the size of the organ portion and thereby create a back pressure reducing or terminating blood flow thereinto and to generally conform said mesh to the outer surface of the organ portion, said sack further including means for 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 coextensive with said sack and made of a semirigid material sufficiently rigid to preclude deformation under the vacuum created by the vacuum source but sufficiently flexible to be substantially conformed over the bleeding surface of the organ by said sack.
Claim 35
Independent Claim
121 words
A device for effecting hemostasis of an organ comprising: (A) an air-permeable mesh of semirigid bioabsorbable material defining interstices 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, said elastic material being elastically stretched over said mesh and over a substantial portion of the organ and compressing the organ portion, thereby decreasing the flow of blood thereto; said sack further including means for 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.
Claim 36
Independent Claim
121 words
A device for effecting hemostasis of an organ comprising: (A) an air-permeable mesh of semirigid bioabsorbable material defining interstices 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, said elastic material being elastically stretched over said mesh and over a substantial portion of the organ and compressing the organ portion, thereby decreasing the flow of blood thereto; said sack further including means for 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.
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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) | 1996-02-16 | 1996-08-17 | 1997-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-16 | 2000-08-17 | 2001-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-16 | 2004-08-17 | 2005-02-16 | $7700.00 | Window Closed / Lapsed |