Concentric loop intrauterine device

• US 3,908,646 A
• Filed: 03/27/1974
• Issued: 09/30/1975
• Est. Priority Date: 07/20/1972
• Status: Expired due to Term

• Current Assignee: Amir H. Ansari
• Original Assignee: Amir H. Ansari
• Inventors: Ansari, Amir H.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): McGowan, J. C.
• Application Number:
  US05/455,045
• Time in Patent Office: 552 Days
• Field of Search: 128/127,128,129,130
• US Class Current: 128/839
• CPC Class Codes: A61F 6/142 Wirelike structures, e.g. loops, rings, spirals
• CPC Class Codes: A61F 6/148 with sheet-like structure
• CPC Class Codes: A61F 6/18 Inserters or removers ; Apparatus for loading an intra-uterine device into an insertion tube

Abstract

An intrauterine device comprising two concentric generally circular rings formed of elastic, inert plastic material coupled by a plurality of bridges of similar material. The material is elastically deformed during insertion into the uterine cavity by a specially formed applicator, and magnetic material is imbedded in a normally coiled tab associated with the inner of the two rings for subsequent removal by magnetic extractor means.

Claims

1. An intrauterine device adapted to be inserted in the female uterine cavity comprising a member made of elastic substantially inert material, said member including generally concentric inner and outer rings coupled by a plurality of connector bridges, and means formed of magnetic material carried in said device, said device being capable of deformation for insertion through the cervical canal into said cavity where it regains its original form when released therein and of removal by magnetic coupling with magnetic extractor means, a tab integrally joined at one end thereof to said member and normally coiled therewithin, with said magnetic material being carried by the free end of said tab for extension of the tab and removal of the member by the extractor means.

2. The device of claim 1, wherein said tab is integrally joined to said inner ring.

3. The device of claim 2, wherein said tab is normally coiled within said inner ring.

4. The device of claim 1, wherein said elastic substantially inert material comprises silico-organic rubber.

5. The device of claim 1, wherein said rings comprise circular rings.

6. The device of claim 1, wherein said plurality of connector bridges comprise four connector bridges.

7. The device of claim 1, wherein said ring, connector bridges and nomally coiled Tab are substantially coplanar.

8. An intrauterine device adapted to be inserted in the female uterine cavity comprising a body made of an elastic substantially inert material, said body including concentric inner and outer rings coupled by a plurality of connector bridges, magnetic material embedded within at least a portion of said material, said portion being sufficiently deformable that it is readily removable from the uterine cavity by engagement of the magnetic material with a magnetic probe;

said portion having sufficient resiliency that it assumes a natural shape when in the uterine cavity by which irritation and side affects are avoided; and

further comprising a normally coiled resilient tab having one end integral with one of said rings, said tab having a free end, and the magnetic material being at said tab free end.

9. The device of claim 8, wherein said elastic substantially inert material comprises silico-organic rubber.