US3659597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intra-uterine contraceptive
Assignee: NAT RES DEV
•
Filing: 1969-12-09
•
Granted: 1972-05-02
•
Expires: 1989-12-09
Abstract
Abstract An intra-uterine contraceptive device is provided to fit the parturient uterus and gradually accommodate the involutionary process in a predetermined manner. The device is contractable in self-tracking manner by longitudinally progressive sliding engagement of one end of an elongate flexible member in the other end thereof. More particularly such a device is formed by a suitably dimensioned tapered tube.
Inventors
- 👤 David Wolfers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/142
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
80 words
An intra-uterine contraceptive device comprising an elongate flexible member adapted to afford contraction by longitudinally progressive sliding engagement of one end of the member with the other end thereof along a spiral locus; said member being stressed or otherwise elastically formed to tend to adopt an open form relative to its engaged contracted form; said member being slotted, notched, apertured or otherwise formed to permit the passage of fluid transversely therethrough when the device is engaged in said spiral form.
Claim 2
Dependent Claim
80 words
An intra-uterine contraceptive device comprising an elongate flexible member adapted to afford contraction by longitudinally progressive sliding engagement of one end of the member with the other end thereof along a spiral locus; said member being stressed or otherwise elastically formed to tend to adopt an open form relative to its engaged contracted form; said member being slotted, notched, apertured or otherwise formed to permit the passage of fluid transversely therethrough when the device is engaged in said spiral form.
Claim 3
Dependent Claim
57 words
An intra-uterine contraceptive device comprising an elongate flexible member adapted to afford contraction by longitudinally progressive sliding engagement of one end of the member with the other end thereof along a spiral locus; said member being provided with latching means actuated by said sliding engagement and effective to inhibit complete disengagement of the ends of said member.
Claim 4
Dependent Claim
57 words
An intra-uterine contraceptive device comprising an elongate flexible member adapted to afford contraction by longitudinally progressive sliding engagement of one end of the member with the other end thereof along a spiral locus; said member being provided with latching means actuated by said sliding engagement and effective to inhibit complete disengagement of the ends of said member.
Claim 5
Dependent Claim
51 words
An intra-uterine contraceptive device comprising an elongate flexible member adapted to afford contraction by longitudinally progressive sliding engagement of one end of the member with the other end thereof along a spiral locus; said member comprising a tapered tube the narrower end of which is slidably engageable in the wider end.
Claim 6
Dependent Claim
51 words
An intra-uterine contraceptive device comprising an elongate flexible member adapted to afford contraction by longitudinally progressive sliding engagement of one end of the member with the other end thereof along a spiral locus; said member comprising a tapered tube the narrower end of which is slidably engageable in the wider end.
Claim 7
Dependent Claim
22 words
A device according to claim 3 wherein said tube has a continuous slot along its inner periphery relative to said contracted form.
Claim 8
Dependent Claim
21 words
A device according to claim 4 wherein said slot extends transversely over about one quarter of the circumference of said tube.
Claim 9
Dependent Claim
36 words
A device according to claim 3 wherein said tube is provided with a notch at its narrower end and a tongue at its wider end to latch the former end when engaged in the latter end.
Claim 10
Dependent Claim
69 words
An intra-uterine contraceptive device comprising an elongate flexible member having a portion thereof leading from and including one end in mutual longitudinal sliding engagement encompassed within another portion thereof leading from and including the other end thereof to define a closed loop overall configuration, said loop being stressed to adopt an expanded open form and contractable against said stress by progressive increase of the length of said sliding engagement.
Claim 11
Dependent Claim
69 words
An intra-uterine contraceptive device comprising an elongate flexible member having a portion thereof leading from and including one end in mutual longitudinal sliding engagement encompassed within another portion thereof leading from and including the other end thereof to define a closed loop overall configuration, said loop being stressed to adopt an expanded open form and contractable against said stress by progressive increase of the length of said sliding engagement.
Claim 12
Dependent Claim
34 words
The device of claim 7, dimensioned to provide, when engagEd, a maximum overall diameter of about 3 inches contractable by progressive sliding engagement to a minimum overall diameter of not more than 1 inch.
Claim 13
Dependent Claim
28 words
The device of claim 7 loaded in contracted form into one end of an introducer comprising a flexible tube having a piston translatable therethrough to eject said device.
Claim 14
Dependent Claim
29 words
A device according to claim 7 wherein said member is slotted, notched, apertured or otherwise formed to permit the passage of fluid transversely therethrough when the device is contracted.
Claim 15
Dependent Claim
83 words
An intra-uterine contraceptive device comprising an elongate resiliently flexible element of split-ring shaped transverse cross-sectional shape and split-ring shaped appearance in elevation, the element thus having two opposite ends; the transverse cross-section of said element graduating in ring-size from one end toward the other; the smaller radiussed of said ends being so much smaller than the radius of the transverse cross section of the element at the other end thereof, that the former is insertable into the latter for telescoping the device, convolute-fashion.
Claim 16
Dependent Claim
83 words
An intra-uterine contraceptive device comprising an elongate resiliently flexible element of split-ring shaped transverse cross-sectional shape and split-ring shaped appearance in elevation, the element thus having two opposite ends; the transverse cross-section of said element graduating in ring-size from one end toward the other; the smaller radiussed of said ends being so much smaller than the radius of the transverse cross section of the element at the other end thereof, that the former is insertable into the latter for telescoping the device, convolute-fashion.
Claim 17
Dependent Claim
54 words
A device according to claim 11 wherein the change in radius of the cross section of the device in proceeding from said one end toward said other end thereof is sufficient to permit at least two complete convolutions of the device, that is, an angular separation of said two ends of at least 720*.
Claim 18
Dependent Claim
80 words
An intra-uterine contraceptive device comprising an elongate resiliently flexible member of generally loop-shape, which, in an unstressed state, proceeds through more than 360*; said member having one end thereof configured to accept and slidably guidingly engage a portion of said member leading from and including the other end thereof, telescoping fashion, so that as said loop is compressively stressed in a sense to decrease the circumference of the loop, the accepted, other end tracks the loop in a circumferential direction.
Claim 19
Dependent Claim
80 words
An intra-uterine contraceptive device comprising an elongate resiliently flexible member of generally loop-shape, which, in an unstressed state, proceeds through more than 360*; said member having one end thereof configured to accept and slidably guidingly engage a portion of said member leading from and including the other end thereof, telescoping fashion, so that as said loop is compressively stressed in a sense to decrease the circumference of the loop, the accepted, other end tracks the loop in a circumferential direction.
References Cited (Backward Citations)
US3353533A
Cited
US3407806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |