Patent US5097898A successfully refreshed from Google Patents.
US5097898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End caps for reflux fluid heated patient line
Assignee: Smiths Medical ASD Inc
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Filing: 1991-09-10
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Granted: 1992-03-24
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Expires: 2011-09-10
Abstract
Abstract A heat exchanger useful for supplying infusates over substantial distances uses an extrusion which provides a central tube (16) for carrying an infusate and two outer channels (22,24) for carrying a heat exchange fluid. A first of the channels (22) carries the heat exchange fluid from an inlet end to an opposite end, and the other of the channels (24) returns the heat exchange fluid to the inlet end. An end cap (40) at the inlet end is easily connected to a source of heat exchange fluid and communicates with the channels. An end cap (26) at the opposite end receives the heat exchange fluid from the first channel (22) and redirects it to the second channel (24). Both of the end caps (26,40) have connectors (32,45) for facilitating connection with lines from a source of infusate and a patient. <IMAGE> <IMAGE>
Inventors
- 👤 Wesley H. Verkaart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:57
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/44; F; F28; F28D; F28D7/00; F28D7/10; F28D7/106; F28D7/12; A61M2205/00; A61M2205/36; A61M2205/366; F28D21/00; F28D2021/0019; F28D2021/0042; F28D2021/005
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
An end cap for receiving a first fluid from a first channel formed between an outer tube and an inner tube and supplying said first fluid to a second channel formed between said outer tube and said inner tube and for communicating a second fluid with an inner tube, said end cap comprising an outer portion for receiving said outer tube and engaging an outer surface of said outer tube and a conduit for carrying said second fluid, said conduit being received in said inner tube and engaging an inner surface of said inner tube, wherein said outer portion is spaced from said conduit to form a chamber, said chamber being divided by a partition to form a first chamber communicating with said first channel and a second chamber communicating with said second channel.
Claim 2
Dependent Claim
134 words
An end cap for receiving a first fluid from a first channel formed between an outer tube and an inner tube and supplying said first fluid to a second channel formed between said outer tube and said inner tube and for communicating a second fluid with an inner tube, said end cap comprising an outer portion for receiving said outer tube and engaging an outer surface of said outer tube and a conduit for carrying said second fluid, said conduit being received in said inner tube and engaging an inner surface of said inner tube, wherein said outer portion is spaced from said conduit to form a chamber, said chamber being divided by a partition to form a first chamber communicating with said first channel and a second chamber communicating with said second channel.
Claim 3
Dependent Claim
27 words
An end cap according to claim 1 further comprising means providing fluid communication between an external supply of said first fluid and said first and second chambers.
Claim 4
Dependent Claim
38 words
An end cap according to claim 1 further comprising a first nipple in fluid communication with said first chamber and a second nipple in fluid communication with said second chamber, said first and second nipples being substantially parallel.
Claim 5
Dependent Claim
47 words
An end cap according to claim 3 in combination with connection means for receiving said first and second nipples and being in fluid communication with a source of said first fluid, said connector means having first and second recesses for receiving, respectively, said first and second nipples.
Claim 6
Dependent Claim
20 words
An end cap according to claim 4 further comprising means for removably securing said end cap to said connector means.
Claim 7
Dependent Claim
17 words
An end cap according to claim 5 wherein said means for removably securing engages said end cap.
Claim 8
Dependent Claim
134 words
An end cap for receiving a first fluid from a first channel formed between an outer tube and an inner tube and directing said first fluid into a second channel formed between said outer tube and said inner tube and for communicating a second fluid with said inner tube, said end cap comprising an outer portion for receiving said outer tube and engaging an outer surface of said outer tube and a conduit for carrying said second fluid, said conduit being received in said inner tube and engaging an inner surface of said inner tube wherein said outer portion is spaced from said conduit to form a chamber communicating only with said first and second channels for receiving said first fluid from said first channel and directing said first fluid into said second channel.
Claim 9
Dependent Claim
134 words
An end cap for receiving a first fluid from a first channel formed between an outer tube and an inner tube and directing said first fluid into a second channel formed between said outer tube and said inner tube and for communicating a second fluid with said inner tube, said end cap comprising an outer portion for receiving said outer tube and engaging an outer surface of said outer tube and a conduit for carrying said second fluid, said conduit being received in said inner tube and engaging an inner surface of said inner tube wherein said outer portion is spaced from said conduit to form a chamber communicating only with said first and second channels for receiving said first fluid from said first channel and directing said first fluid into said second channel.
References Cited (Backward Citations)
GB323196A
Cited
DE719974C
Cited
GB512896A
Cited
US2302273A
Cited
US2362985A
Cited
DE827702C
Cited
US3857514A
Cited
US3976129A
Cited
FR2354528A1
Cited
US4233812A
Cited
US4345644A
Cited
US4448243A
Cited
US4821797A
Cited
US4759749A
Cited
US4926830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |