US3750662A - Intrauterine contraceptive device - Google Patents

Intrauterine contraceptive device Download PDF

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Publication number
US3750662A
US3750662A US00155768A US3750662DA US3750662A US 3750662 A US3750662 A US 3750662A US 00155768 A US00155768 A US 00155768A US 3750662D A US3750662D A US 3750662DA US 3750662 A US3750662 A US 3750662A
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United States
Prior art keywords
spurs
thin webs
adjacent
elongate
disposed
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Expired - Lifetime
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US00155768A
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English (en)
Inventor
I Lerner
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AH Robins Co Inc
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AH Robins Co Inc
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Publication date
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
    • A61F6/06—Contraceptive devices; Pessaries; Applicators therefor for use by females
    • A61F6/14—Contraceptive devices; Pessaries; Applicators therefor for use by females intra-uterine type
    • A61F6/142—Wirelike structures, e.g. loops, rings, spirals
    • A61F6/144—Wirelike structures, e.g. loops, rings, spirals with T-configuration

Definitions

  • ABSTRACT An intrauterine contraceptive device made from plastic and having a central core defining an intrauterine device nose, tail, and a pair of lateral side portions, and including retrograde spurs each having a bulbous contour, the spurs being arranged along the core side portions and of varying length so as to define a generally inverted pear shaped intrauterine device. Thin webs may be formed between adjacent spurs to increase the area of the invention, and multiple rows of spurs may be formed on each core side for better retention of the intrauterine device in the uterine cavity. A talisman and withdrawal cord may be attached to either end of the core.
  • the invention relates to the field of intrauterine contraceptive devices or IUDs, as they are now known, and more particularly to an improved IUD having a configuration to permit a maximum number of retrograde spurs extending therefrom whereby retention of the IUD within the uterine cavity is more positively assured.
  • the IUD of the aforementioned application introduced a new concept in effective intrauterine contraception by providing a device engineered to accommodate physiological variations in the normal uterine cavity. That IUD is made of materials of exceptional resilience and has a light, flexible design so that expulsive contractions directed toward the broad upper nose portion of the IUD results in flaring and flexion at the apex or tail, increasing resistance to expulsion.
  • the IUD disclosed and claimed in the aforementioned application comprises a ring having a membrane formed thereacross and retrograde spurs therearound to maximize endometrial surface contact, guard against intestinal strangulation in the event of uterine cavity perforation, minimize the possibility of expulsion, and render the device well tolerable by nulliparous as well as multiparous patients.
  • Another object of the invention is to provide an IUD as described which includes relatively thin webs formed between adjacent spurs to even further increase the effective surface area of the IUD.
  • Yet another object of the invention is to provide an IUD as described having multiple rows of tissue engaging spurs to further enhance the retentive characteristics of the IUD.
  • Still another object of the invention is to provide an IUD of the type described wherein a talisman and withdrawal string may be attached at either end of the IUD.
  • FIG. 1 is a plan view of one embodiment of the invention
  • FIG. 2 is a sectional view taken along lines 22 of FIG. 1;
  • FIG. 3 is a view similar to FIG. 2, illustrating another embodiment of the invention.
  • FIG. 4 is another sectional view taken along lines 4-4 of FIG. 1, and drawn to an enlarged scale;
  • FIG. 5 is a partial plan view of the invention as shown in FIG. 1, illustrating various other embodiments.
  • the IUD of the present invention is somewhat caterpillar shaped as an inspection of FIG. 1 reveals, in that it comprises a relatively elongate central core 10 which defines a cervical entry end or nose 12, a trailing end or tail l4, and a pair of lateral sides l6, 16.
  • core 10 presents the inverse of the proposition by means of a relatively narrowly dimensioned core structure with appendages projecting therefrom to provide increased surface area.
  • the body of the present invention is filled and completed by the formation of a plurality of laterally extending tissue engaging spurs l8.
  • Spurs 18 are arranged and configured so that nose spurs are substantially longer than rear spurs on core 10 and the intermediate spurs have lengths progressively decreasing from front to rear so that the entire IUD somewhat bears the appearance of an inverted pear. Such a shape is most closely akin to that of the normal uterus.
  • Each spur 18 is of increasingly tapered configuration outwardly towards its terminal free end where it is spherically rounded off as shown in cross-section in FIG. 4.'This configuration increases the surface area of each spur 18 substantially, thereby providing greater area for tissue contact and consequent partial tissue enfoldment of uterine cavity tissue about the IUD within the uterine cavity, but without expulsion of the IUD.
  • the smooth rounded surfaces on each spur l8 minimize the chances for injury to the cervical canal during insertion and to the uterine cavity after placement and positioning therein.
  • Still greater surface area for the IUD may be provided by a plurality of relatively thin scalloped webs 20 formed between adjacent spurs 18. Each web may extend beyond the space encompassed between adjacent spurs as at 22 (FIG. 5) and/or be separated from each adjacent spur and attached only to the fillet therebetween as at 24 (FIG. 5). In another embodiment, the IUD may be formed with no webs at all, as shown in the lower left portion of FIG. 5.
  • cord 28 is attached to tail 14 of the IUD for withdrawal of the IUD from the titerine cavity after use.
  • Cord 28 may have a knot therein (not shown) which visually indicates and confirms proper insertion depth once the IUD is placed and positioned within the uterine cavity.
  • cord 28 may alternatively be attached to nose 12 of the IUD so that upon withdrawal-from the uterine cavity, the IUD willinvert within the uterus, thereby allowing spurs 18 to be in a position tapered away from the direction of withdrawal to minimize the possibility of tissue damage during the withdrawal process.
  • each spur 18 has a retrograde inclination from nose [2 to tail 14.
  • the angle of inclination 6 (FlG..l) for each spur l8 may vary considerably, from 0 to 75 with respect to a line normalthrough the elongate major axis of core 10. Stated alternatively, the angle of retrogradeinclination may vary from 90to 15 with respect to the long axis of core 10.
  • the spurs adjacent nose 12 will have a lesser degree of retrograde inclination than those near tail 14.
  • Such a slanted configuration assures that most of the sprus 18 will contact some portion of the tissues of the uterine cavity once the IUD is positioned therein, and the retrograde inclination of each spur 18 aids in preventing expulsion of the IUD by normal muscle contractions of the uterus. Additionally, the retrograde inclination of spurs l8 facilitates insertion ease, in that the spurs are inclined away from the direction of insertion. 1
  • each spur 18 when compared with the somewhat more narrow junction of each spur 18 to lateral side walls 16 of core permits each spur 18 to flex somewhat, particularly within a plane conincident with the major plane of the IUD (FIG. I) so that each s'pur 18 may accommodate itself to the particular internal tissue configuration of the uterine cavity into which the IUD is inserted.
  • the material of the IUD is preferably an easily molded, plastic, which is light and flexible. Among others, such material could be ULTRATHENE," polyethylene, polypropylene, ethylene, or propylene.
  • An intrauterine contraceptive device made from material enabling flexing to conform to the uterine cavity comprising: an elongate, stem-like, relatively rigid, central core body of substantial thickness forming the structural main member of said device and having a nose, tail and lateral side portions defined therealong, and encompassing an area substantially less than that of an average normal condition uterine cavity, and a plurality of closely spaced elongate spurs, with smoothly contoured terminal portions, extending outwardly from each of said side portions.
  • pull line means are secured to said intrauterine device to enable removal after insertion.
  • each of said thin webs is attached only to a lateral side and is disposed loose between said adjacent elongate spurs.
  • each of said thin webs is attached to a lateral side and is also secured to said adjacent elongate spurs.
  • each of said thin webs is shorter than the length of said adjacent spurs.
  • each of said thin webs between adjacent spurs is attached only to a lateral side and is disposed loose between said adjacent elongate spurs.
  • each of said thin webs between adjacent spurs is attached to a lateral side and is also secured to said adjacent elongate spurs.
  • each of said thin webs protrudes outwardly beyond the terminal ends of said adjacent spurs.
  • pull line means are secured to said intrauterine device to enable removal after insertion.
  • each of said additional thin webs is shorter than the length of said adjacent spurs.
  • each of said additional thin webs is attached only to a lateral side and is disposed loose between said first recited thin webs.
  • each of said additional thin webs is attached to a lateral side and is also secured to said first recited thin webs.
  • each of said additional thin webs is shorter than the length of said adjacent spurs.
  • each of said additional thin webs is attached only to a lateral side and is disposed loose between said first recited thin webs.
  • each of said additional thin webs is attached to a lateral side and is also secured to adjacent said first recited thin webs.
  • each of said additional thin webs protrudes outwardly beyond the terminal ends of said adjacent spurs.
  • a device as defined in claim 1 made from a plastic material comprising an ethylene vinyl copolymer.

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  • Health & Medical Sciences (AREA)
  • Reproductive Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
US00155768A 1971-06-23 1971-06-23 Intrauterine contraceptive device Expired - Lifetime US3750662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15576871A 1971-06-23 1971-06-23

Publications (1)

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US3750662A true US3750662A (en) 1973-08-07

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US00155768A Expired - Lifetime US3750662A (en) 1971-06-23 1971-06-23 Intrauterine contraceptive device

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US (1) US3750662A (fr)
AU (1) AU445517B2 (fr)
BE (1) BE791735A (fr)
DE (1) DE2253893A1 (fr)
FR (1) FR2202437A5 (fr)
GB (1) GB1405764A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933153A (en) * 1974-03-18 1976-01-20 Laszlo Kalman Csatary Intra-uterine contraceptive device
US20150101613A1 (en) * 2013-10-14 2015-04-16 Contramed, Llc Intrauterine device with controlled copper ion elution
US9492312B2 (en) 2010-10-18 2016-11-15 Bioceptive, Inc. Methods and apparatus for inserting a device or pharmaceutical into a body cavity
US10022264B2 (en) 2013-10-18 2018-07-17 Contramed, Llc Intrauterine device with retrieval thread
US10159596B2 (en) 2012-08-14 2018-12-25 Sebela Vlc Limited Intrauterine contraceptive device
US10166141B2 (en) 2012-08-14 2019-01-01 Sebela Vlc Limited Intrauterine contraceptive device
US10918516B2 (en) 2013-10-14 2021-02-16 Sebela Vlc Limited Intrauterine device with controlled copper ion elution

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147274A1 (fr) * 1983-12-01 1985-07-03 BIOMASYS Société dite: Perfectionnements apportés aux dispositifs intra-utérins
FR2565482A2 (fr) * 1984-06-07 1985-12-13 Biomasys Perfectionnements apportes aux dispositifs intra-uterins
FR2555893A1 (fr) * 1983-12-01 1985-06-07 Biomasys Perfectionnements apportes aux dispositifs intra-uterins

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1267627A (en) * 1916-09-20 1918-05-28 Franklin L Campbell Artificial bait.
US2616559A (en) * 1949-04-15 1952-11-04 Daniel F Hyland Packing articles, such as fishing lures, made of flexible sheet material
US2722766A (en) * 1952-12-11 1955-11-08 Anthony C Accetta Fish lure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1267627A (en) * 1916-09-20 1918-05-28 Franklin L Campbell Artificial bait.
US2616559A (en) * 1949-04-15 1952-11-04 Daniel F Hyland Packing articles, such as fishing lures, made of flexible sheet material
US2722766A (en) * 1952-12-11 1955-11-08 Anthony C Accetta Fish lure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Dalkron Shield publication of A. H. Robins Co. Nov., l970. *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933153A (en) * 1974-03-18 1976-01-20 Laszlo Kalman Csatary Intra-uterine contraceptive device
US9492312B2 (en) 2010-10-18 2016-11-15 Bioceptive, Inc. Methods and apparatus for inserting a device or pharmaceutical into a body cavity
US10932943B2 (en) 2012-08-14 2021-03-02 Sebela Vlc Limited Intrauterine contraceptive device
US12544255B2 (en) 2012-08-14 2026-02-10 Sebela Vlc Limited Intrauterine contraceptive device
US11850181B2 (en) 2012-08-14 2023-12-26 Sebela Vlc Limited Intrauterine contraceptive device
US10159596B2 (en) 2012-08-14 2018-12-25 Sebela Vlc Limited Intrauterine contraceptive device
US10166141B2 (en) 2012-08-14 2019-01-01 Sebela Vlc Limited Intrauterine contraceptive device
US10188546B2 (en) * 2013-10-14 2019-01-29 Sebela Vlc Limited Intrauterine device with controlled copper ion elution
US10918516B2 (en) 2013-10-14 2021-02-16 Sebela Vlc Limited Intrauterine device with controlled copper ion elution
US20150101613A1 (en) * 2013-10-14 2015-04-16 Contramed, Llc Intrauterine device with controlled copper ion elution
US10398588B2 (en) 2013-10-18 2019-09-03 Sebela Vlc Limited Intrauterine device with retrieval thread
US11207209B2 (en) 2013-10-18 2021-12-28 Sebela Vlc Limited Intrauterine device with retrieval thread
US11744728B2 (en) 2013-10-18 2023-09-05 Sebela Vlc Limited Intrauterine device with retrieval thread
US10022264B2 (en) 2013-10-18 2018-07-17 Contramed, Llc Intrauterine device with retrieval thread
US12138199B2 (en) 2013-10-18 2024-11-12 Sebela Vlc Limited Intrauterine device with retrieval thread

Also Published As

Publication number Publication date
GB1405764A (en) 1975-09-10
AU4755172A (en) 1974-02-21
DE2253893A1 (de) 1974-05-16
AU445517B2 (en) 1974-02-21
FR2202437A5 (fr) 1974-05-03
BE791735A (fr) 1973-03-16

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