US3802425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intrauterine contraceptive device
Assignee: Individual
•
Filing: 1971-10-14
•
Granted: 1974-04-09
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Expires: 1991-10-14
Abstract
Abstract An intrauterine contraceptive device is provided which is inserted into a uterus in a collapsed position and is held in an expanded position by introduction of a self-hardening liquid plastic into the device after it is positioned within the uterus. In one embodiment the device is provided with an inflatable membrane for positioning it within the uterus prior to insertion of the liquid plastic, after which the membrane is deflated and in some instances removed. In another embodiment the device comprises a plastic tube with a resilient rod therein which may be deformed to insert the device in the uterus and after being positioned therein a liquid self-hardening plastic is introduced into the tube to hold the resilient rod in an expanded position that conforms to the uterine cavity. In still another embodiment, the rod is arranged to telescope in a tubular member which tubular member can be filled with self-hardening liquid plastic to force the rod out of the end of the tubular membrane and against a wall of the uterus and to hold it permanently in that position. In addition a tubular member may be provided an angular connection thereof which can be filled with the self-hardening liquid plastic to form a more rigid structure after the device is positioned in the uterus. If desired, a resistance heating element can be provided within the device to melt or soften the plastic so that the device can be removed from the uterus at a later time.
Inventors
- 👤 T Moulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/148; A61F6/142
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
122 words
An intrauterine contraceptive device comprising: a hollow, flexible enclosed member for receiving a fluid, said member being insertable into a uterus in a collapsed position and movable into an extended position within the uterus, and being of biomedical material and of a size and shape compatible with the uterus; a rod means telescopically received within said member for extending said device after insertion into the uterus and introduction of a self-hardening liquid plastic into said member so that said device conforms to the size of the uterine cavity; and inlet means in said member for introducing the self-hardening liquid plastic in a quantity sufficient to extend said rod means against the uterine wall and to hold said member against the uterine wall.
Claim 2
Dependent Claim
122 words
An intrauterine contraceptive device comprising: a hollow, flexible enclosed member for receiving a fluid, said member being insertable into a uterus in a collapsed position and movable into an extended position within the uterus, and being of biomedical material and of a size and shape compatible with the uterus; a rod means telescopically received within said member for extending said device after insertion into the uterus and introduction of a self-hardening liquid plastic into said member so that said device conforms to the size of the uterine cavity; and inlet means in said member for introducing the self-hardening liquid plastic in a quantity sufficient to extend said rod means against the uterine wall and to hold said member against the uterine wall.
Claim 3
Dependent Claim
14 words
An intrauterine contraceptive device as claimed in claim 1, wherein: said rod is resilient.
Claim 4
Dependent Claim
131 words
An intrauterine contraceptive device comprising: an angular member having first and second legs interconnected at an acute angle and being foldable at said interconnection to bring said legs together during insertion into a uterus, said first leg comprising a first rod surrounded by a collapsible tube through which a self-hardening liquid plastic may be inserted, and said second leg comprising a hollow substantially rigid member connected to said first rod and to said collapsible tube and in fluid communication with the latter; and a second rod within said second leg slidable through an opening in the end thereof to an extended position against a wall of the uterus by introduction of said liquid plastic into said inlet in said first leg under pressure after said device is posiTioned in the uterus.
Claim 5
Dependent Claim
131 words
An intrauterine contraceptive device comprising: an angular member having first and second legs interconnected at an acute angle and being foldable at said interconnection to bring said legs together during insertion into a uterus, said first leg comprising a first rod surrounded by a collapsible tube through which a self-hardening liquid plastic may be inserted, and said second leg comprising a hollow substantially rigid member connected to said first rod and to said collapsible tube and in fluid communication with the latter; and a second rod within said second leg slidable through an opening in the end thereof to an extended position against a wall of the uterus by introduction of said liquid plastic into said inlet in said first leg under pressure after said device is posiTioned in the uterus.
Claim 6
Dependent Claim
68 words
An intrauterine contraceptive device as claimed in claim 3, further including: a spring in said second leg having one end engageable with the inner end of said second rod and the other end engageable with said interconnection for urging said rod to said expanded position within the uterus, said liquid plastic, after hardening, preventing further expansion over a period of time to minimize erosion of the uterine wall.
Claim 7
Dependent Claim
45 words
An intrauterine contraceptive device as claimed in claim 3, further including: a hollow cross member extending between and communicating with said first and second legs and fillable with said liquid plastic to make said interconnection substantially rigid after insertion of said device into the uterus.
Claim 8
Dependent Claim
123 words
An intrauterine contraceptive device comprising: an angular member of biomedical material and of a size and shape compatible with a uterus and having first and second legs interconnected at an angle and bendable at said interconnection to facilitate insertion of said device into the uterus and expandable within the uterus to conform to uterine size; means in said angular member for expanding it within the uterus to conform to uterine size; a collapsible hollow cross member extending between said first and second legs adjacent said interconnection; and means in said cross member to make said interconnection substantially rigid after insertion of said device into the uterus to hold said legs at a fixed angle to minimize expulsion and erosion of the uterine wall.
Claim 9
Dependent Claim
123 words
An intrauterine contraceptive device comprising: an angular member of biomedical material and of a size and shape compatible with a uterus and having first and second legs interconnected at an angle and bendable at said interconnection to facilitate insertion of said device into the uterus and expandable within the uterus to conform to uterine size; means in said angular member for expanding it within the uterus to conform to uterine size; a collapsible hollow cross member extending between said first and second legs adjacent said interconnection; and means in said cross member to make said interconnection substantially rigid after insertion of said device into the uterus to hold said legs at a fixed angle to minimize expulsion and erosion of the uterine wall.
Claim 10
Dependent Claim
92 words
An extendable intrauterine contraceptive device comprising: first and second telescopic members within each other and insertable into a uterus when in collapsed position, said members being of biomedical material and of a size and shape compatible with the uterus; means for moving said members from said collapsed position to an extended position to expand said device to conform to the size of the uterus after insertion into the uterus; and means for fixing the position of said members in the uterus after expansion to minimize expulsion and erosion of the uterine wall.
Claim 11
Dependent Claim
92 words
An extendable intrauterine contraceptive device comprising: first and second telescopic members within each other and insertable into a uterus when in collapsed position, said members being of biomedical material and of a size and shape compatible with the uterus; means for moving said members from said collapsed position to an extended position to expand said device to conform to the size of the uterus after insertion into the uterus; and means for fixing the position of said members in the uterus after expansion to minimize expulsion and erosion of the uterine wall.
Claim 12
Dependent Claim
28 words
An intrauterine contraceptive device, as claimed in claim 7, wherein said moving means includes: a spring interconnected between said members for urging said members to said extended position.
Claim 13
Dependent Claim
47 words
An intrauterine contraceptive device, as claimed in claim 8, wherein said fixing means includes: means for introducing a self-hardening liquid plastic into said device around said spring to hold said device in a fixed extended position after said plastic hardens to minimize erosion of the uterine wall.
Claim 14
Dependent Claim
106 words
An intrauterine contraceptive device comprising: first and second telescopic members within each other and insertable into a uterus when in collapsed position, said first member being hollow and said second member being telescopically received in an open end of said first member; and means for introducing a self-hardening liquid plastic material into said first member to urge said second member out of said open end from a collapsed position to an extended position conforming to the size of the uterus and to hold said device in a fixed extended position after said plastic hardens to minimize erosion of the uterine wall and expulsion from the uterus.
Claim 15
Dependent Claim
106 words
An intrauterine contraceptive device comprising: first and second telescopic members within each other and insertable into a uterus when in collapsed position, said first member being hollow and said second member being telescopically received in an open end of said first member; and means for introducing a self-hardening liquid plastic material into said first member to urge said second member out of said open end from a collapsed position to an extended position conforming to the size of the uterus and to hold said device in a fixed extended position after said plastic hardens to minimize erosion of the uterine wall and expulsion from the uterus.
Claim 16
Dependent Claim
90 words
An intrauterine contraceptive device comprising: a hollow, flexible enclosed member for receiving a fluid, said member being insertable into a uterus in a collapsed position within the uterus, and being of biomedical material and of a size and shape compatible with the uterus; first means within said member for expanding said member to the size of the uterus after insertion; and second means for holding said first means in fixed position within the uterus after said member has expanded to the size of the uterus to minimize expulsion and erosion.
Claim 17
Dependent Claim
90 words
An intrauterine contraceptive device comprising: a hollow, flexible enclosed member for receiving a fluid, said member being insertable into a uterus in a collapsed position within the uterus, and being of biomedical material and of a size and shape compatible with the uterus; first means within said member for expanding said member to the size of the uterus after insertion; and second means for holding said first means in fixed position within the uterus after said member has expanded to the size of the uterus to minimize expulsion and erosion.
Claim 18
Dependent Claim
54 words
An intrauterine contraceptive device, as claimed in claim 11, wherein at least a portion of said member is tubular and sAid first means and said second means respectively include: resilient means for expanding said member; and a self-hardening liquid plastic material within said tubular portion for holding said first means in a fixed position.
Claim 19
Dependent Claim
101 words
An intrauterine contraceptive device comprising: an angular member having first and second legs interconnected at an angle and bendable at said interconnection to facilitate insertion of said device into a uterus, said angular member being of biomedical material and of a size and shape compatible with the uterus; means within said angular member for expanding said device by urging said legs against the uterine walls after insertion; and means for holding said expanding means in fixed position and for holding said interconnection substantially rigid after expansion of said device in the uterus to minimize expulsion and erosion of the uterine wall.
Claim 20
Dependent Claim
101 words
An intrauterine contraceptive device comprising: an angular member having first and second legs interconnected at an angle and bendable at said interconnection to facilitate insertion of said device into a uterus, said angular member being of biomedical material and of a size and shape compatible with the uterus; means within said angular member for expanding said device by urging said legs against the uterine walls after insertion; and means for holding said expanding means in fixed position and for holding said interconnection substantially rigid after expansion of said device in the uterus to minimize expulsion and erosion of the uterine wall.
Claim 21
Dependent Claim
140 words
An intrauterine contraceptive device for substantially filling the uterine cavity in the plane of the uterine cavity and having a minimal thickness in the anterior-posterior direction, said device comprising: a hollow, flexible enclosed member of biomedical material and of a size and shape compatible with the uterus and insertable into the uterus in a collapsed position, said member being expandable within the uterine cavity in the plane thereof but not in the anterior-posterior direction; first means within said member for expanding said member, after insertion, to the size of the uterine cavity in the plane thereof without expansion in the anterior-posterior direction; and second means for holding said first means in fixed position within the uterus after said member has expanded in the plane of the uterine cavity to the size of the uterine cavity to minimize expulsion and erosion.
Claim 22
Dependent Claim
140 words
An intrauterine contraceptive device for substantially filling the uterine cavity in the plane of the uterine cavity and having a minimal thickness in the anterior-posterior direction, said device comprising: a hollow, flexible enclosed member of biomedical material and of a size and shape compatible with the uterus and insertable into the uterus in a collapsed position, said member being expandable within the uterine cavity in the plane thereof but not in the anterior-posterior direction; first means within said member for expanding said member, after insertion, to the size of the uterine cavity in the plane thereof without expansion in the anterior-posterior direction; and second means for holding said first means in fixed position within the uterus after said member has expanded in the plane of the uterine cavity to the size of the uterine cavity to minimize expulsion and erosion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |