| 摘要 |
A CONDOM HAS A RING (6) ADJACENT THE OPEN END (1) FOR EXPANDING THE CONDOM TO A MAXIMUM DIAMETER TO MAINTAIN THE OPEN END OUTSIDE THE VAGINA, AND A TUBULAR PORTION (3) EXTENDING BETWEEN THE RING AND THE CLOSED END IS OF A SIZE TO FORM A LOOSE FIT AROUND THE PENIS AND IS FORMED WITH A SERIES OF CIRCUMFERENTIAL GROOVES (5), E.G. 3 TO 5 GROOVES AROUND 0.8 CM WIDE AND 1.0 CM DEEP, SO THAT THE CONDOM NATURALLY FOLDS IN A BELLOWS LIKE MANNER FOR THE CONDOM TO COLLAPSE TO A SUBSTANTIALLY FLAT CONDITION PRIOR TO USE
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