A.Inert intra-uterine contraceptive devices:
Lippes loop:
It is a double 'S' shaped polyethylene loop impregnated with barium sulfate (for radiopacity) and the tail is made of fine nylon.
Lippes loop was available in four sizes – A,B,C,D.
Push out method was used for the insertion of the lippes loop.
Dalkon shield:
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In 1967, Lernes and Davis designed dalkon shield with larger area of contact with the endometrium.
But later withdrawn due to its severe infection rate.
Lippes loop:
It is a double 'S' shaped polyethylene loop impregnated with barium sulfate (for radiopacity) and the tail is made of fine nylon.
Lippes loop was available in four sizes – A,B,C,D.
Push out method was used for the insertion of the lippes loop.
Dalkon shield:
.jpg)
In 1967, Lernes and Davis designed dalkon shield with larger area of contact with the endometrium.
But later withdrawn due to its severe infection rate.
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