US4773431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intra-amniotic loop catheter
Assignee: M A S MEDICAL INCORPORATED A CORP OF CANADA
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Filing: 1987-03-03
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Granted: 1988-09-27
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Expires: 2007-03-03
Abstract
Abstract An intra-amniotic loop catheter which allows direct access to a free floating segment of the umbilical cord for direct blood sampling. The loop catheter is formed of a flexible, resilient material with a distal, hook shaped end which may be straightened by an insertion or a removal tool but which returns to a hook shape when released. The hook is adapted to be oriented around a free floating section of the umbilical cord to allow insertion of a blood sampling needle into the umbilical cord through an opening in the proximal region of the hook.
Inventors
- 👤 Abraham Lodomirski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:14
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0041; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/150038; A61M25/0043; A61M2025/0063; A61M2210/00; A61M2210/14; A61M2210/1433; A61M2210/145
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
116 words
An intra-amniotic catheter for insertion into an amniotic cavity comprising: a catheter having a straight portion having a longitudinal axis and a central lumen along said axis, said catheter further having a distal end comprising a flexible resilient tubular portion in a hook shape which is adapted to hold an umbilical cord, including an opening in a region of the hook-shaped distal end proximal to the straight portion, said opening being in communication with said central lumen and substantially transverse to said longitudinal axis of said straight portion, whereby a blood sampling needle may be inserted through said opening after said hook-shaped distal end of said catheter is positioned around a segment of an umbilical cord.
Claim 2
Dependent Claim
116 words
An intra-amniotic catheter for insertion into an amniotic cavity comprising: a catheter having a straight portion having a longitudinal axis and a central lumen along said axis, said catheter further having a distal end comprising a flexible resilient tubular portion in a hook shape which is adapted to hold an umbilical cord, including an opening in a region of the hook-shaped distal end proximal to the straight portion, said opening being in communication with said central lumen and substantially transverse to said longitudinal axis of said straight portion, whereby a blood sampling needle may be inserted through said opening after said hook-shaped distal end of said catheter is positioned around a segment of an umbilical cord.
Claim 3
Dependent Claim
27 words
The intra-amniotic catheter of claim 1 further including an opening in a distal end of said hook-shape to allow orientation of said catheter about an insertion needle.
References Cited (Backward Citations)
US3419010A
Cited
US3860006A
Cited
US3920023A
Cited
US4117836A
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US4033331A
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US4108175A
Cited
US4434803A
Cited
US4405314A
Cited
US4568338A
Cited
US4671795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |