Patent US3848590A successfully refreshed from Google Patents.
US3848590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intrauterine device
Assignee: Tecna Corp
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Filing: 1973-05-23
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Granted: 1974-11-19
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Expires: 1993-05-23
Abstract
Abstract An intrauterine device has an envelope, when unfolded, of approximately triangular shape in plan. A filling tube with a loosely tied knot therein connects to the envelope near a triangular apex. A cord is joined to the envelope on a side opposite the apex. An inserter rod has a rounded inner end with a notch in it. An at least partially looped portion of the cord is removably received in the notch. The cord can be held immobile in the notch to hold the filled envelope in emplaced position as the tube is pulled to tighten the knot.
Inventors
- 👤 S Kitrilakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
62 words
In combination, an intrauterine device including an envelope, a loosely knotted filling tube connected to and extending from one portion of said envelope, a cord secured to another portion of said envelope and having at least a partial loop, an inserter rod, and means on said inserter rod contoured to be engaged with and disengaged from said partial loop in said cord.
Claim 2
Dependent Claim
62 words
In combination, an intrauterine device including an envelope, a loosely knotted filling tube connected to and extending from one portion of said envelope, a cord secured to another portion of said envelope and having at least a partial loop, an inserter rod, and means on said inserter rod contoured to be engaged with and disengaged from said partial loop in said cord.
Claim 3
Dependent Claim
21 words
A combination as in claim 1 in which said means includes a curved bottom notch adjacent one end of said rod.
Claim 4
Dependent Claim
43 words
A combination as in claim 1 in which envelope cord extends from said envelope in a direction opposite to said tube then loops over the end of said rod and finally extends in a direction effective to withstand a pull on said tube.
Claim 5
Dependent Claim
41 words
A combination as in claim 1 in which said envvelope in plan when unfolded is approximately a triangle, said tube engages said envelope adjacent an apex of said triangle and said cord engages said envelope at a side opposite said apex.
Claim 6
Dependent Claim
79 words
In combination, an intrauterine device including a rod having a rounded end, an envelope when empty wrapped around said rod adjacent said rounded end, a filling tube communicating with said envelope adjacent one end of said envelope and extending alongside said rod in a direction away from said end, a cord engaging said envelope adjacent the other end of said envelope and curved around said rod adjacent said rounded end and extending alongside said rod and said filling tube.
Claim 7
Dependent Claim
79 words
In combination, an intrauterine device including a rod having a rounded end, an envelope when empty wrapped around said rod adjacent said rounded end, a filling tube communicating with said envelope adjacent one end of said envelope and extending alongside said rod in a direction away from said end, a cord engaging said envelope adjacent the other end of said envelope and curved around said rod adjacent said rounded end and extending alongside said rod and said filling tube.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |