US4605006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypothermic protection pad
Assignee: Terumo Cardiovascular Systems Corp
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Filing: 1984-02-28
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Granted: 1986-08-12
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Expires: 2004-02-28
Abstract
Abstract A hypothermic protection pad for topically cooling an internal organ. The pad includes a flexible outer pouch, a flexible bladder within the pouch, a biocompatible liquid within the bladder and a thermal insulating layer within the pouch and adjacent one side of the bladder. Methods of achieving hypothermic protection of internal organs with cooling pads are also included.
Inventors
- 👤 Roberta C. Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:49
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/12; A61B; A61B90/00; A61F7/10; A61F2007/101
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A hypothermic protection pad for topically cooling an internal organ comprising: A. a flexible, outer pouch, comprised of a polymeric film and having two major, opposite sidewalls; B. a flexible liquid-tight bladder having two major, opposite sidewalls, said bladder being disposed within said pouch between said sidewalls of said pouch; C. a sterile solution of sodium chloride in water, containing 0.85-0.95 weight percent of sodium chloride, capable of absorbing and dissipating heat and contained within said bladder; and D. a thermal insulating layer comprising a web of microfibers, said layer being disposed within said pouch between one sidewall of said pouch and one sidewall of said bladder so that said hypothermic protection pad can be positioned between said internal organ and a surface with said insulation layer between said bladder and said surface to restrict heat transfer from said surface into said liquid while permitting heat transfer from said organ into said liquid.
Claim 2
Dependent Claim
153 words
A hypothermic protection pad for topically cooling an internal organ comprising: A. a flexible, outer pouch, comprised of a polymeric film and having two major, opposite sidewalls; B. a flexible liquid-tight bladder having two major, opposite sidewalls, said bladder being disposed within said pouch between said sidewalls of said pouch; C. a sterile solution of sodium chloride in water, containing 0.85-0.95 weight percent of sodium chloride, capable of absorbing and dissipating heat and contained within said bladder; and D. a thermal insulating layer comprising a web of microfibers, said layer being disposed within said pouch between one sidewall of said pouch and one sidewall of said bladder so that said hypothermic protection pad can be positioned between said internal organ and a surface with said insulation layer between said bladder and said surface to restrict heat transfer from said surface into said liquid while permitting heat transfer from said organ into said liquid.
Claim 3
Dependent Claim
17 words
The protection pad according to claim 1 wherein said insulating layer is attached to said outer pouch.
Claim 4
Dependent Claim
59 words
The protection pad according to claim 3 further comprising polymeric film means for handling said outer pouch peripherally attached to a major outside surface of said one sidewall of said outer pouch opposite said insulating layer and defining a glove adapted to slideably receive a hand of a user and to aid in contacting said pad with said organ.
Claim 5
Dependent Claim
19 words
The protection pad according to claim 3 wherein said saline solution comprises about 0.89 weight percent of sodium chloride.
Claim 6
Dependent Claim
15 words
The protection pad according to claim 4 wherein said web further comprises crimped bulking fibers.
Claim 7
Dependent Claim
36 words
The protection pad according to claim 5 wherein said bladder contains about 140 gm of said saline solution and said web includes 40 gm/m 2 -300 gm/m 2 of said microfibers and said crimped bulking fibers.
Claim 8
Dependent Claim
76 words
A method of topically cooling an internal organ comprising the steps of: A. providing a sterilized hypothermic protection pad according to claim 1; B. cooling said protection pad to about 4° C.; and C. positioning said hypothermic protection pad between said internal organ and a surface with said insulation layer between said bladder and said surface to restrict heat transfer from said surface into said liquid while permitting heat transfer from said organ into said liquid.
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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) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |