US6325818B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable cooling apparatus for selective organ hypothermia
Assignee: Zoll Circulation Inc
•
Filing: 1999-10-07
•
Granted: 2001-12-04
•
Expires: 2019-10-07
Abstract
Abstract A cooling apparatus having an inflatable balloon near a distal end of a multi-lumen catheter, with a plurality of blood flow passageways formed through the interior of the balloon from a proximal face of the inflated balloon to a distal face of the inflated balloon. Chilled saline solution is introduced through a supply lumen of the catheter to inflate the balloon in a feeding artery of the selected organ; this allows blood to flow through the blood flow passageways of the balloon, from one exterior face of the balloon to another exterior face. The saline solution continues to circulate around the blood flow passageways inside the balloon, to cool the blood, eventually exiting the balloon through a return lumen of the catheter.
Inventors
- 👤 Randell Werneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:39
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/12; A61F7/123; A61F2007/126
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
145 words
A cooling apparatus for selective organ hypothermia, comprising: a flexible catheter; an inflatable balloon attached near a distal end of said catheter; at least one blood flow passageway formed through the interior of said balloon, said at least one blood flow passageway extending from a proximal blood flow port in a proximal exterior face of said balloon to a distal blood flow port in a distal exterior face of said balloon; a cooling fluid supply lumen formed in said catheter; a cooling fluid supply port in said catheter, connecting said cooling fluid supply lumen to the interior of said balloon; a cooling fluid return lumen formed in said catheter; and a cooling fluid return port in said catheter, connecting the interior of said balloon to said cooling fluid return lumen; wherein said at least one blood flow passageway is formed from a metallized polymer film.
Claim 2
Dependent Claim
145 words
A cooling apparatus for selective organ hypothermia, comprising: a flexible catheter; an inflatable balloon attached near a distal end of said catheter; at least one blood flow passageway formed through the interior of said balloon, said at least one blood flow passageway extending from a proximal blood flow port in a proximal exterior face of said balloon to a distal blood flow port in a distal exterior face of said balloon; a cooling fluid supply lumen formed in said catheter; a cooling fluid supply port in said catheter, connecting said cooling fluid supply lumen to the interior of said balloon; a cooling fluid return lumen formed in said catheter; and a cooling fluid return port in said catheter, connecting the interior of said balloon to said cooling fluid return lumen; wherein said at least one blood flow passageway is formed from a metallized polymer film.
Claim 3
Dependent Claim
19 words
A cooling apparatus as recited in claim 1 , wherein said balloon is inflatable to a substantially cylindrical shape.
Claim 4
Dependent Claim
27 words
A cooling apparatus as recited in claim 1 , wherein said at least one blood flow passageway assumes a substantially tubular shape upon inflation of said balloon.
Claim 5
Dependent Claim
18 words
A cooling apparatus as recited in claim 1 , further comprising a guidewire lumen formed in said catheter.
Claim 6
Dependent Claim
58 words
A cooling apparatus as recited in claim 1 , further comprising a plurality of blood flow passageways formed through the interior of said balloon, each said blood flow passageway extending from a proximal blood flow port in a proximal exterior face of said balloon to a distal blood flow port in a distal exterior face of aid balloon.
Claim 7
Dependent Claim
33 words
A cooling apparatus as recited in claim 1 , wherein said at least one blood flow passageway is formed from a polymer film having metal layers formed on both interior and exterior surfaces.
Claim 8
Dependent Claim
27 words
A cooling apparatus as recited in claim 1 , wherein said at least one blood flow passageway is formed from a polymer film loaded with metal particles.
Claim 9
Dependent Claim
182 words
A cooling apparatus for selective organ hypothermia, comprising: a flexible catheter; an inflatable balloon attached near a distal end of said catheter, said balloon being inflatable to a substantially cylindrical shape; a plurality of blood flow passageways formed through the interior of said balloon, each said blood flow passageway extending from a proximal blood flow port in a proximal exterior face of said balloon to a distal blood flow port in a distal exterior face of said balloon, each said blood flow passageway being shaped to assume a substantially tubular shape upon inflation of said balloon, each said blood flow passageway being formed of a material having high thermal conductivity; a cooling fluid supply lumen formed in said catheter; a cooling fluid supply port in said catheter, connecting said cooling fluid supply lumen to the interior of said balloon; a cooling fluid return lumen formed in said catheter; and a cooling fluid return port in said catheter, connecting the interior of said balloon to said cooling fluid return lumen; wherein each said blood flow passageway is formed from a metallized polymer film.
Claim 10
Dependent Claim
182 words
A cooling apparatus for selective organ hypothermia, comprising: a flexible catheter; an inflatable balloon attached near a distal end of said catheter, said balloon being inflatable to a substantially cylindrical shape; a plurality of blood flow passageways formed through the interior of said balloon, each said blood flow passageway extending from a proximal blood flow port in a proximal exterior face of said balloon to a distal blood flow port in a distal exterior face of said balloon, each said blood flow passageway being shaped to assume a substantially tubular shape upon inflation of said balloon, each said blood flow passageway being formed of a material having high thermal conductivity; a cooling fluid supply lumen formed in said catheter; a cooling fluid supply port in said catheter, connecting said cooling fluid supply lumen to the interior of said balloon; a cooling fluid return lumen formed in said catheter; and a cooling fluid return port in said catheter, connecting the interior of said balloon to said cooling fluid return lumen; wherein each said blood flow passageway is formed from a metallized polymer film.
Claim 11
Dependent Claim
31 words
A cooling apparatus as recited in claim 8 , wherein each said blood flow passageway is formed from a polymer film having metal layers formed on both interior and exterior surfaces.
Claim 12
Dependent Claim
18 words
A cooling apparatus as recited in claim 8 , further comprising a guidewire lumen formed in said catheter.
Claim 13
Dependent Claim
25 words
A cooling apparatus as recited in claim 8 , wherein each said blood flow passageway is formed from a polymer film loaded with metal particles.
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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) | 2004-12-03 | 2005-06-04 | 2005-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-03 | 2009-06-04 | 2009-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-03 | 2013-06-04 | 2013-12-04 | $7700.00 | Window Closed / Lapsed |