Patent US2525020A successfully refreshed from Google Patents.
US4217890A
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US
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Surgical sling for positioning a harvested kidney during surgical reattachment
Assignee: Individual
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Filing: 1978-11-03
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Granted: 1980-08-19
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Expires: 1998-11-03
Abstract
Abstract A method and associated surgical apparatus adapted to minimize the deterioration of kidney function incurred during transplantation by warm ischemia. A sling of non-wettable insulative material is employed by the surgical assistant to contain the harvested kidney. The sling conforms generally to the shape of the kidney. A suitably located aperture is provided so that arterial, venous and ureteral (anastomosis) linkages can be surgically performed while rewarming of the enclosed kidney is substantially inhibited.
Inventors
- 👤 Milton L. Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:45
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/0063; A61B; A61B17/00; A61B90/00; A61B17/00234; A61B2017/00287
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
138 words
A kidney sling for positioning a harvested kidney during surgical reattachment of said harvested kidney to a blood supply which comprises: a. a matching pair of continuous sling sides, each of said sling sides being formed of a substantially flat, thermally insulative and water-impermeable material substantially shaped at its periphery to conform closely to the shape of a kidney; b. said sides being joined together at their periphery to thereby form a sling having an interior cavity which closely conforms to the shape of a kidney; and c. an aperture formed in the lower portion of said sling to allow the protrusion of the artery, vein and ureter associated with said harvested kidney whereby said sling provides a thermally insulative environment for said kidney during such surgical reattachment process so that the effects of warm ischemia are minimized.
Claim 2
Dependent Claim
138 words
A kidney sling for positioning a harvested kidney during surgical reattachment of said harvested kidney to a blood supply which comprises: a. a matching pair of continuous sling sides, each of said sling sides being formed of a substantially flat, thermally insulative and water-impermeable material substantially shaped at its periphery to conform closely to the shape of a kidney; b. said sides being joined together at their periphery to thereby form a sling having an interior cavity which closely conforms to the shape of a kidney; and c. an aperture formed in the lower portion of said sling to allow the protrusion of the artery, vein and ureter associated with said harvested kidney whereby said sling provides a thermally insulative environment for said kidney during such surgical reattachment process so that the effects of warm ischemia are minimized.
Claim 3
Dependent Claim
32 words
A surgical sling as defined in claim 1 wherein said sling additionally includes a tab, said tab being formed in the upper portion thereof and providing a means for holding said sling.
Claim 4
Dependent Claim
27 words
A surgical sling as defined in claim 2 additionally comprising means for disengaging said sling from said kidney after the reattachment thereof to a supply of blood.
Claim 5
Dependent Claim
41 words
A surgical sling as defined in claim 3 wherein said means for disengaging said sling from an enclosed kidney comprises a tear strip embedded in a portion of each sling side and extending substantially from said lower aperture to said tab.
Claim 6
Dependent Claim
89 words
In the transplantation of a kidney from a donor to a donee wherein it is required that the donor's supply of blood be removed from said kidney prior to the surgical attachment of said kidney to the blood supply of said donee, the improvement comprising the step of enclosing said harvested kidney in a sling fabricated of an impermeable, thermally insulative material, whereby the thermal insulation provides protection for said kidney during surgical attachment to the blood supply of said donee and warm ischemia during anastomosis is thereby minimized.
Claim 7
Dependent Claim
89 words
In the transplantation of a kidney from a donor to a donee wherein it is required that the donor's supply of blood be removed from said kidney prior to the surgical attachment of said kidney to the blood supply of said donee, the improvement comprising the step of enclosing said harvested kidney in a sling fabricated of an impermeable, thermally insulative material, whereby the thermal insulation provides protection for said kidney during surgical attachment to the blood supply of said donee and warm ischemia during anastomosis is thereby minimized.
Claim 8
Dependent Claim
45 words
The transplantation of a kidney according to the method defined in claim 5 additionally characterized by the thermal insulation of said kidney by its enclosure in a sling of substantially continuous, thermally insulative, water-impermeable material adapted to conform closely to the shape of a kidney.
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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) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |