Patent US3683905A successfully refreshed from Google Patents.
US3683905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intra-uterine contraceptive devices
Assignee: Individual
•
Filing: 1970-03-16
•
Granted: 1972-08-15
•
Expires: 1990-03-16
Abstract
Abstract An intra-uterine contraceptive device comprising a longitudinally rigid, transversely resiliently compressible body having each of its longitudinal ends expansible upon compression of the other; means limiting the expansion of one of its ends formed of a resiliently pliable material molded on said body at said end and along its side edges; the resiliently pliable material projecting beyond said body at said end to provide a compressible, longitudinally deformable extension of said body. The limiting means and the extension include a diaphragm across the width of the body; the diaphragm defined by thickened ribs along its free edge portions.
Inventors
- 👤 Marc E Chaft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:15
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/142
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
198 words
An intra-uterine contraceptive device, comprising a body formed of a plurality of substantially straight, stiff elements, including straight end elements each having a free end, and straight intermediate elements between said end elements, said intermediate elements each connected by each of its ends to and end of an adjacent element in extended, divergent relation to said adjacent element by an arcuate, resilient joint to form a continuous structure, said elements normally disposed in extended position relative to one another and compressible towards one another for insertion into a uterus, at least each of said end elements covered by a sheath formed of an inert, resilient pliable material, said sheaths having rib-like extensions projecting beyond the free ends of said end elements and offset towards and merging with one another to limit expansion of said end of the body upon compression of the other end thereof, said rib like extensions being capable of being flexed to be longitudinally offset relative to the plane defined between said end elements and of being offset toward one another by being pulled outwardly at their point of merger to thereby converge said end elements and facilitate withdrawal of the device from the uterus.
Claim 2
Dependent Claim
198 words
An intra-uterine contraceptive device, comprising a body formed of a plurality of substantially straight, stiff elements, including straight end elements each having a free end, and straight intermediate elements between said end elements, said intermediate elements each connected by each of its ends to and end of an adjacent element in extended, divergent relation to said adjacent element by an arcuate, resilient joint to form a continuous structure, said elements normally disposed in extended position relative to one another and compressible towards one another for insertion into a uterus, at least each of said end elements covered by a sheath formed of an inert, resilient pliable material, said sheaths having rib-like extensions projecting beyond the free ends of said end elements and offset towards and merging with one another to limit expansion of said end of the body upon compression of the other end thereof, said rib like extensions being capable of being flexed to be longitudinally offset relative to the plane defined between said end elements and of being offset toward one another by being pulled outwardly at their point of merger to thereby converge said end elements and facilitate withdrawal of the device from the uterus.
Claim 3
Dependent Claim
24 words
The intra-uterine contraceptive device of claim 1, wherein a diaphragm of said material extends between said sheaths, said end elements, and said rib-like extensions.
Claim 4
Dependent Claim
62 words
The intra-uterine contraceptive device of claim 2, wherein portions of said rib-like extensions project beyond said end elements and in substantial alinement therewith, and said diaphragm extends between said alined rib-like portions And said offset extensions thereof, whereby a deformable extension is provided on said body adapted to be narrowed and foreshortened in conformity with the size and shape of a uterus.
Claim 5
Dependent Claim
52 words
The intra-uterine contraceptive device of claim 3, wherein said body is formed of metal leaf spring and is of M shape and said free ends of said end elements are in substantial alinement with one another and with the outer end of the joint connecting the adjacent ends of said intermediate elements.
Claim 6
Dependent Claim
25 words
The intra-uterine contraceptive device of claim 2, wherein said offset portions of said rib extensions are substantially alined and merged to form a string-like appendage.
Claim 7
Dependent Claim
21 words
The intra-uterine contraceptive device of claim 2, wherein said offset portions are outwardly convergent and merge to form a string-like extension.
Claim 8
Dependent Claim
15 words
The intra-uterine contraceptive device of claim 1, wherein said resiliently pliable material comprises a latex.
Claim 9
Dependent Claim
14 words
The intra-uterine contraceptive device of claim 1, wherein said body is formed of metal.
Claim 10
Dependent Claim
33 words
The intra-uterine contraceptive device of claim 1, wherein said body is formed of leaf spring and is of M shape, and said sheath is formed around all of the elements of said body.
Claim 11
Dependent Claim
83 words
The intra-uterine contraceptive device of claim 1, wherein said body is formed of spring wire arranged in a flattened spiral, and comprise an even number of elements, alternate of which are disposed in a plane spaced from and parallel to the others, each said sheath enclosing therewithin one of said end elements and the element to which it is connected, said sheath maintaining the end of said end element in proximity to said connected element whereby said body is given a tapered shape.
Claim 12
Dependent Claim
26 words
The intra-uterine contraceptive device of claim 10, wherein said offset rib-like extensions encompass transversely the joints connecting said intermediate element at said end of said body.
Claim 13
Dependent Claim
44 words
The intra-uterine contraceptive device of claim 10, wherein said sheaths are each formed with a further rib-like extension outwardly convergent toward one another and merging to form a string-like element and a membrane is connected between its offset rib-like extensions and said convergent extensions.
Claim 14
Dependent Claim
39 words
The intra-uterine contraceptive device of claim 1, wherein a relatively thick layer of soft, readily compressible material, inert to body fluids is secured to portions of said sheath around said end elements on the side edges of said body.
Claim 15
Dependent Claim
14 words
The intra-uterine contraceptive device of claim 13, wherein said layer comprises plastic sponge material.
References Cited (Backward Citations)
US3256878A
Cited
US3490446A
Cited
US3397691A
Cited
US3405711A
Cited
US3467089A
Cited
US3516403A
Cited
US3507274A
Cited
US3563235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |