US3782376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intrauterine contraceptive device
Assignee: AH Robins Co Inc
•
Filing: 1971-06-23
•
Granted: 1974-01-01
•
Expires: 1991-06-23
Abstract
Abstract An intrauterine contraceptive device made from plastic and having a perimetral ring with or without a central membrane and including short retrograde spurs having bulbous contour located on each of the outer side portions of the perimetral ring. The spurs preferrably have a retrograde inclination and are of decreasing length from a nose portion of the perimetral ring toward the tail portion, the nose portion being slightly wider than the tail portion providing the IUD with an inverted pear shaped outline when viewed in plan. A marker and extraction string or line is preferrably secured at the nose portion but can be secured to the tail portion. Between spurs, thin webs may be utilized to provide increased IUD surface area. The webs may or may not be secured to the spurs and may terminate between or beyond the spurs. Internal of the perimetral ring is preferrably a membrane having openings at least adjacent the nose and the tail. The membrane may be secured at both sides or it may be secured by a plurality of intermediate narrow membrane portions spaced around the interior of the perimetral portion.
Inventors
- 👤 I Lerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/148
Claims Analysis
Total Claims: 119
Claim 1
Independent Claim
50 words
An intrauterine contraceptive device comprising: a central body having a perimetral portion with nose, tail and side portions and encompassing an area approximating that of an average normal condition uterine cavity, and a plurality of short spurs with enlarged bulbous terminal portions extending outwardly from each of said side portions.
Claim 2
Dependent Claim
50 words
An intrauterine contraceptive device comprising: a central body having a perimetral portion with nose, tail and side portions and encompassing an area approximating that of an average normal condition uterine cavity, and a plurality of short spurs with enlarged bulbous terminal portions extending outwardly from each of said side portions.
Claim 3
Dependent Claim
28 words
An intrauterine device as defined in claim 1, wherein the axis of all of said plurality of spurs on each side portion are disposed in a common plane.
Claim 4
Dependent Claim
23 words
An intrauterine device as defined in claim 2, wherein at least a portion of said spurs have an inclination toward the tail portion.
Claim 5
Dependent Claim
21 words
An intrauterine device as defined in claim 2, wherein all of said spurs have a retrograde inclination toward the tail portion.
Claim 6
Dependent Claim
26 words
An intrauterine device as defined in claim 2, wherein the spurs closest to said nose portion are longer than the spurs closest to said tail portion.
Claim 7
Dependent Claim
23 words
An intrauterine device as defined in claim 1, wherein pull line means are secured to said intrauterine device to enable removal after insertion.
Claim 8
Dependent Claim
19 words
An intrauterine device as defined in claim 6, wherein said pull line means are secured to said nose portion.
Claim 9
Dependent Claim
19 words
An intrauterine device as defined in claim 6, wherein said pull line means are secured to said tail portion.
Claim 10
Dependent Claim
42 words
An intrauterine device as defined in claim 1, wherein thin webs integral with the outer edge of said perimetral portion are disposed on each side portion between at least two adjacent ones of said short spurs on each of said side portions.
Claim 11
Dependent Claim
27 words
An intrauterine device as defined in claim 9, wherein said thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 12
Dependent Claim
35 words
An intrauterine device as defined in claim 9, wherein each of said thin webs between adjacent spurs is attached only to said edge of said perimetral portion and is disposed loose between said adjacent spurs.
Claim 13
Dependent Claim
34 words
An intrauterine device as defined in claim 9, wherein each of said thin webs between adjacent spurs is attached to said edge of said perimetral portion and is also secured to said adjacent spurs.
Claim 14
Dependent Claim
23 words
An intrauterine device as defined in claim 9, wherein each of said thin webs is shorter than the length of said adjacent spurs.
Claim 15
Dependent Claim
33 words
An intrauterine device as defined in claim 9, wherein said thin webs integral with the outer edge protrude outwardly from said perimetral portion a distance greater than the length of said adjacent spurs.
Claim 16
Dependent Claim
28 words
An intrauterine device as defined in claim 14, wherein said protruding thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 17
Dependent Claim
36 words
An intrauterine device as defined in claim 14, wherein each of said protruding thin webs between adjacent spurs is attached only to said edge of said perimetral portion and is disposed loose from said adjacent spurs.
Claim 18
Dependent Claim
35 words
An intrauterine device as defined in claim 14, wherein each of said protruding thin webs between adjacent spurs is attached to said edge of said perimetral portion and is also secured to said adjacent spurs.
Claim 19
Dependent Claim
24 words
An intrauterine device as defined in claim 1, wherein a plurality of rows of short spurs are disposed on each of said side portions.
Claim 20
Dependent Claim
38 words
An intrauterine device as defined in claim 18, wherein the spurs in all of said rows on each of said side portions are side by side in a direction normal to the general planar shape of the device.
Claim 21
Dependent Claim
50 words
An intrauterine device as defined in claim 18, wherein the spurs in one of the adjacent rows on each side of said side portions are offset from the spurs in another of said adjacent rows on the same side of said side portion in a direction along the perimetral portion.
Claim 22
Dependent Claim
23 words
An intrauterine device as defined in claim 18, wherein at least a portion of said spurs have an inclination toward the tail portion.
Claim 23
Dependent Claim
21 words
An intrauterine device as defined in claim 18, wherein all of said spurs have a retrograde inclination toward the tail portion.
Claim 24
Dependent Claim
26 words
An intrauterine device as defined in claim 18, wherein the spurs closest to said nose portion are longer than the spurs closest to said tail portion.
Claim 25
Dependent Claim
23 words
An intrauterine device as defined in claim 18, wherein pull line means are secured to said intrauterine device to enable removal after insertion.
Claim 26
Dependent Claim
19 words
An intrauterine device as defined in claim 24, wherein said pull line means are secured to said nose portion.
Claim 27
Dependent Claim
19 words
An intrauterine device as defined in claim 24, wherein said pull line means are secured to said tail portion.
Claim 28
Dependent Claim
38 words
An intrauterine device as defined in claim 18, wherein thin webs integral with said perimetral portion are disposed on each side portion between at least two adjacent ones of said short spurs on each of said side portions.
Claim 29
Dependent Claim
30 words
An intrauterine device as defined in claim 27, wherein said thin webs are disposed between all adjacent pairs of short spurs in a row on each of said side portions.
Claim 30
Dependent Claim
35 words
An intrauterine device as defined in claim 27, wherein each of said thin webs between adjacent spurs in a row is attached only to said perimetral portion and is disposed loose between said adjacent spurs.
Claim 31
Dependent Claim
31 words
An intrauterine device as defined in claim 27, wherein each of said thin webs between adjacent spurs is attached to said perimetral portion and is also secured to said adjacent spurs.
Claim 32
Dependent Claim
23 words
An intrauterine device ad defined in claim 27, wherein each of said thin webs is shorter than the length of said adjacent spurs.
Claim 33
Dependent Claim
28 words
An intrauterine device as defined in claim 31, wherein said shorter thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 34
Dependent Claim
33 words
An intrauterine device as defined in claim 31, wherein each of said shorter thin webs between adjacent spurs is attached only to said perimetral portion and is disposed loose from said adjacent spurs.
Claim 35
Dependent Claim
32 words
An intrauterine device as defined in claim 31, wherein each of said shorter thin webs between adjacent spurs is attached to said perimetral portion and is also secured to said adjacent spurs.
Claim 36
Dependent Claim
34 words
An intrauterine device as defined in claim 27, wherein said thin webs integral with the perimetral edge portion protrude outwardly from said perimetral portion a distance greater than the length of said adjacent spurs.
Claim 37
Dependent Claim
28 words
An intrauterine device as defined in claim 35, wherein said protruding thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 38
Dependent Claim
33 words
An intrauterine device as defined in claim 35, wherein each of said protruding thin webs between adjacent spurs is attached only to said perimetral portion and is disposed loose from said adjacent spurs.
Claim 39
Dependent Claim
32 words
An intrauterine device as defined in claim 35, wherein each of said protruding thin webs between adjacent spurs is attached to said perimetral portion and is also secured to said adjacent spurs.
Claim 40
Dependent Claim
28 words
An intrauterine device as defined in claim 1, wherein said central body includes a perimetral rim with thin membrane means across the inner diameter of said perimetral rim.
Claim 41
Dependent Claim
29 words
An intrauterine device as defined in claim 39, wherein said membrane means is connected to both side portions and provides openings adjacent said nose portion and said tail portion.
Claim 42
Dependent Claim
25 words
An intrauterine device as defined in claim 40, wherein said membrane means is connected to each side portion via a plurality of narrow membrane portions.
Claim 43
Dependent Claim
29 words
An intrauterine device as defined in claim 39, wherein a multiplicity of narrow spaced apart membrane portions interconnect a central portion of said membrane means to said perimetral rim.
Claim 44
Dependent Claim
30 words
An intrauterine device as defined in claim 42, wherein said multiplicity of membrane portions includes four portions secured to the inner edge of each said side portion of said rim.
Claim 45
Dependent Claim
28 words
An intrauterine device as defined in claim 39, wherein the axis of all of said plurality of spurs on each side portion are disposed in a common plane.
Claim 46
Dependent Claim
23 words
An intrauterine device as defined in claim 39, wherein at least a portion of said spurs have an inclination toward the tail portion.
Claim 47
Dependent Claim
21 words
An intrauterine device as defined in claim 39, wherein all of said spurs have a retrograde inclination toward the tail portion.
Claim 48
Dependent Claim
26 words
An intrauterine device as defined in claim 39, wherein the spurs closest to said nose portion are longer than the spurs closest to said tail portion.
Claim 49
Dependent Claim
23 words
An intrauterine device as defined in claim 39, wherein pull line means are secured to said intrauterine device to enable removal after insertion.
Claim 50
Dependent Claim
19 words
An intrauterine device as defined in claim 48, wherein said pull line means are secured to said nose portion.
Claim 51
Dependent Claim
19 words
An intrauterine device as defined in claim 48, wherein said pull line means are secured to said tail portion.
Claim 52
Dependent Claim
42 words
An intrauterine device as defined in claim 39, wherein thin webs integral with the outer edge of said perimetral portion are disposed on each side portion between at least two adjacent ones of said short spurs on each of said side portions.
Claim 53
Dependent Claim
27 words
An intrauterine device as defined in claim 51, wherein said thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 54
Dependent Claim
35 words
An intrauterine device as defined in claim 51, wherein each of said thin wEbs between adjacent spurs is attached only to said edge of said perimetral portion and is disposed loose between said adjacent spurs.
Claim 55
Dependent Claim
34 words
An intrauterine device as defined in claim 51, wherein each of said thin webs between adjacent spurs is attached to said edge of said perimetral portion and is also secured to said adjacent spurs.
Claim 56
Dependent Claim
23 words
An intrauterine device as defined in claim 51, wherein each of said thin webs is shorter than the length of said adjacent spurs.
Claim 57
Dependent Claim
28 words
An intrauterine device as defined in claim 55, wherein said shorter thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 58
Dependent Claim
36 words
An intrauterine device as defined in claim 55, wherein each of said shorter thin webs between adjacent spurs is attached only to said edge of said perimetral portion and is disposed loose from said adjacent spurs.
Claim 59
Dependent Claim
35 words
An intrauterine device as defined in claim 55, wherein each of said shorter thin webs between adjacent spurs is attached to said edge of said perimetral portion and is also secured to said adjacent spurs.
Claim 60
Dependent Claim
33 words
An intrauterine device as defined in claim 51, wherein said thin webs integral with the outer edge protrude outwardly from said perimetral portion a distance greater than the length of said adjacent spurs.
Claim 61
Dependent Claim
28 words
An intrauterine device as defined in claim 18, wherein said central body includes a perimetral rim with thin membrane means across the inner diameter of said perimetral rim.
Claim 62
Dependent Claim
29 words
An intrauterine device as defined in claim 60, wherein said membrane means is connected to both side portion and provides openings adjacent said nose portion and said tail portion.
Claim 63
Dependent Claim
25 words
An intrauterine device as defined in claim 61, wherein said membrane means is connected to each side portion via a plurality of narrow membrane portions.
Claim 64
Dependent Claim
29 words
An intrauterine device as defined in claim 60, wherein a multiplicity of narrow spaced apart membrane portions interconnect a central portion of said membrane means to said perimetral rim.
Claim 65
Dependent Claim
30 words
An intrauterine device as defined in claim 63, wherein said multiplicity of membrane portions includes four portions secured to the inner edge of each said side portion of said rim.
Claim 66
Dependent Claim
59 words
An intrauterine contraceptive device comprising: a central body having a perimetral ring portion with nose, tail and side portions and encompassing an area approximating that of an average normal condition uterine cavity, a plurality of short spurs extending outwardly from each of said side portions, and pull line means secured to said nose portion to enable removal after insertion.
Claim 67
Dependent Claim
59 words
An intrauterine contraceptive device comprising: a central body having a perimetral ring portion with nose, tail and side portions and encompassing an area approximating that of an average normal condition uterine cavity, a plurality of short spurs extending outwardly from each of said side portions, and pull line means secured to said nose portion to enable removal after insertion.
Claim 68
Dependent Claim
28 words
An intrauterine device as defined in claim 65, wherein the axis of all of said plurality of spurs on each side portion are disposed in a common plane.
Claim 69
Dependent Claim
48 words
An intrauterine contraceptive device comprising: a central body having a perimetral ring portion with nose, tail and side portions and encompassing an area approximating that of an average normal condition uterine cavity, and a plurality of rows of short spurs extending outwardly from each of said side portions.
Claim 70
Dependent Claim
48 words
An intrauterine contraceptive device comprising: a central body having a perimetral ring portion with nose, tail and side portions and encompassing an area approximating that of an average normal condition uterine cavity, and a plurality of rows of short spurs extending outwardly from each of said side portions.
Claim 71
Dependent Claim
38 words
An intrauterine device as defined in claim 67, wherein the spurs in all of said rows on each of said side portions are side by side in a direction normal to the general planar shape of the device.
Claim 72
Dependent Claim
50 words
An intrauterine device as defined in claim 67, wherein the spurs in one of the adjacent rows on each side of said side portions are offset from the spurs in another of said adjacent rows on the same side of said side portion in a direction along the perimetral portion.
Claim 73
Dependent Claim
23 words
An intrauterine device as defined in claim 67, wherein at least a portion of said spurs have an inclination toward the tail portion.
Claim 74
Dependent Claim
21 words
An intrauterine device as defined in claim 67, wherein all of said spurs have a retrograde inclination toward the tail portion.
Claim 75
Dependent Claim
26 words
An intrauterine device as defined in claim 67, wherein the spurs closest to said nose portion are longer than the spurs closest to said tail portion.
Claim 76
Dependent Claim
42 words
A intrauterine device as defined in claim 67, wherEin thin webs integral with the outer edge of said perimetral portion are disposed on each side portion between at least two adjacent ones of said short spurs on each of said side portions.
Claim 77
Dependent Claim
27 words
An intrauterine device as defined in claim 73, wherein said thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 78
Dependent Claim
35 words
An intrauterine device as defined in claim 73, wherein each of said thin webs between adjacent spurs is attached only to said edge of said perimetral portion and is disposed loose between said adjacent spurs.
Claim 79
Dependent Claim
34 words
An intrauterine device as defined in claim 73, wherein aech of said thin webs between adjacent spurs is attached to said edge of said perimetral portion and is also secured to said adjacent spurs.
Claim 80
Dependent Claim
23 words
An intrauterine device as defined in claim 73, wherein each of said thin webs is shorter than the length of said adjacent spurs.
Claim 81
Dependent Claim
33 words
An intrauterine device as defined in claim 73, wherein said thin webs integral with the outer edge protrude outwardly from said perimetral portion a distance greater than the length of said adjacent spurs.
Claim 82
Dependent Claim
28 words
An intrauterine device as defined in claim 78, wherein said protruding thin webs sre disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 83
Dependent Claim
36 words
An intrauterine device as defined in claim 78, wherein each of said protruding thin webs between adjacent spurs is attached only to said edge of said perimetral portion and is disposed loose from said adjacent spurs.
Claim 84
Dependent Claim
35 words
An intrauterine device as defined in claim 78, wherein each of said protruding thin webs between adjacent spurs is attached to said edge of said perimetral portion and is also secured to said adjacent spurs.
Claim 85
Dependent Claim
82 words
An intrauterine contraceptive device comprising: a central body having a perimeter ring portion with nose, tail and side portions and encompassing an area approximating that of an average normal condition uterine cavity, thin membrane means across the inner diameter of said ring portion, a plurality of short spurs extending outwardly from each of said side portions, said membrane means including a plurality of narrow membrane portions connected to each side portion and providing openings adjacent said nose portion and said tail portion.
Claim 86
Dependent Claim
82 words
An intrauterine contraceptive device comprising: a central body having a perimeter ring portion with nose, tail and side portions and encompassing an area approximating that of an average normal condition uterine cavity, thin membrane means across the inner diameter of said ring portion, a plurality of short spurs extending outwardly from each of said side portions, said membrane means including a plurality of narrow membrane portions connected to each side portion and providing openings adjacent said nose portion and said tail portion.
Claim 87
Dependent Claim
31 words
An intrauterine device as defined in claim 82, wherein said plurality of membrane portions includes four portions secured to the inner edge of each of the side portions of said rim.
Claim 88
Dependent Claim
24 words
An intrauterine device as defined in claim 82, wherein a plurality of rows of short spurs are disposed on each of said side portions.
Claim 89
Dependent Claim
38 words
An intrauterine device as defined in claim 84, wherein the spurs in all of said rows on each of said side portions are side by side in a direction normal to the general planar shape of the device.
Claim 90
Dependent Claim
50 words
An intrauterine device as defined in claim 84, wherein the spurs in one of the adjacent rows on each side of said side portions are offset from the spurs in another of said adjacent rows on the same side of said side portion in a direction along the perimetral portion.
Claim 91
Dependent Claim
23 words
An intrauterine device as defined in claim 82, wherein at least a portion of said spurs have an inclination toward the tail portion.
Claim 92
Dependent Claim
21 words
An intrauterine device as defined in claim 82, wherein all of said spurs have a retrograde inclination toward the tail portion.
Claim 93
Dependent Claim
26 words
An intrauterine device as defined in claim 82, wherein the spurs closest to said nose portion are longer than the spurs closest to said tail portion.
Claim 94
Dependent Claim
23 words
An intrauterine device as defined in claim 82, wherein pull line means is secured to said intrauterine device to enable removal after insertion.
Claim 95
Dependent Claim
19 words
An intrauterine device as defined in claim 90, wherein said pull line means is secured to said nose portion.
Claim 96
Dependent Claim
19 words
An intrauterine device as defined in claim 90, wherein said pull line means is secured to said tail portion.
Claim 97
Dependent Claim
42 words
An intrauterine device as defined in claim 82, wherein thin webs integral with the outer edge of said perimetral portion are dispoSed on each side portion between at least two adjacent ones of said short spurs on each of said side portions.
Claim 98
Dependent Claim
27 words
An intrauterine device as defined in claim 93, wherein said thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 99
Dependent Claim
35 words
An intrauterine device as defined in claim 93, wherein each of said thin webs between adjacent spurs is attached only to said edge of said perimetral portion and is disposed loose between said adjacent spurs.
Claim 100
Dependent Claim
34 words
An intrauterine device as defined in claim 93, wherein each of said thin webs between adjacent spurs is attached to said edge of said perimetral portion and is also secured to said adjacent spurs.
Claim 101
Dependent Claim
23 words
An intrauterine device as defined in claim 93, wherein each of said thin webs is shorter than the length of said adjacent spurs.
Claim 102
Dependent Claim
33 words
An intrauterine device as defined in claim 93, wherein said thin webs integral with the outer edge protrude outwardly from said perimetral portion a distance greater than the length of said adjacent spurs.
Claim 103
Dependent Claim
28 words
An intrauterine device as defined in claim 98, wherein said protruding thin webs are disposed between all adjacent pairs of short spurs on each of said side portions.
Claim 104
Dependent Claim
36 words
An intrauterine device as defined in claim 98, wherein each of said protruding thin webs between adjacent spurs is attached only to said edge of said perimetral portion and is disposed loose from said adjacent spurs.
Claim 105
Dependent Claim
35 words
An intrauterine device as defined in claim 98, wherein each of said protruding thin webs between adjacent spurs is attached to said edge of said perimetral portion and is also secured to said adjacent spurs.
Claim 106
Dependent Claim
34 words
An intrauterine device as defined in claim 1, wherein the portion of each bulbous spur located near said perimetral portion has a smaller cross-section than that of the portion adjacent the spur terminal end.
Claim 107
Dependent Claim
19 words
An intrauterine device as defined in claim 102, wherein each of the bulbous spurs has an effective teardrop configuration.
Claim 108
Dependent Claim
20 words
An intrauterine device as defined in claim 102, wherein the terminal end of each bulbous spur has an enlarged knob.
Claim 109
Dependent Claim
19 words
An intrauterine device as defined in claim 102, wherein the terminal end of each bulbous spur is substantially spherical.
Claim 110
Dependent Claim
35 words
A intrauterine device as defined in claim 18, wherein the portion of each bulbous spur located near said perimetral portion has a smaller cross section than that of the portion adjacent the spur terminal end.
Claim 111
Dependent Claim
25 words
An intrauterine device as defined in claim 106, wherein at least a portion of said plurality of bulbous spurs each has an effective teardrop configuration.
Claim 112
Dependent Claim
27 words
An intrauterine device as defined in claim 106, wherein the terminal end of at least a portion of said plurality of bulbous spurs has an enlarged knob.
Claim 113
Dependent Claim
26 words
An intrauterine device as defined in claim 106, wherein the terminal end of at least a portion of said plurality of bulbous spurs is substantially spherical.
Claim 114
Dependent Claim
28 words
An intrauterine device as defined in claim 109, wherein the configuration of each spur in another portion of said plurality of bulbous spurs has an effective teardrop shape.
Claim 115
Dependent Claim
46 words
An intrauterine device as defined in claim 67, wherein at least a portion of said plurality of spurs are bulbous and the portion of each said bulbous spur located near said perimetral portion has a smaller cross section than the portion adjacent the spur terminal end.
Claim 116
Dependent Claim
26 words
An intrauterine device as defined in claim 111, wherein at least a portion of a plurality of said bulbous spurs each has an effective teardrop configuration.
Claim 117
Dependent Claim
27 words
An intrauterine device as defined in claim 111, wherein the terminal end of at least a portion of a plurality of bulbous spurs has an enlarged knob.
Claim 118
Dependent Claim
28 words
An intrauterine device as defined in claim 111, wherein the terminal end of each of at least a portion of a plurality of bulbous spurs is substantially spherical.
Claim 119
Dependent Claim
17 words
A device as defined in claim 1 made from a plastic material comprising an ethylene vinyl copolymer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |