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Silkworm, about 1920
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From the FANDRE works in Nancy comes the curious, now abandoned material "silkworm good" (Crins de Florence).
Whereas classic cocoons process the finished cocoon, killing the doll directly before the coccon stage (by immersing it in an acid bath) kills the animal, and extracts the thread from the silk gland.
J & J became a classic factory: In 1887, brothers Robert Wood and James W. JOHNSON made antiseptic and resorbable sutures (catgut and silk) preserved in oil. As early as 1888, the factory delivered by the meter (the surgeon could extract exactly the amount of thread he needed from a glass bottle).
In 1890 "Silkworm well" came into the range, 1892 silver wire, followed by Kanguruhsehne, horse hair and umbilical cord threads, which one has left in the meantime.
Gustav KLEIN reported in 1907 on his very positive experiences with the silk seam in laparotomies (Zbl.Gyn.Nr.33 1907 S. 1004). R. Benndorf also praised the advantages of the material (Zbl.Gyn. 1907 No. 51 p.
The material was popular with surgeons. Since it did not dissolve and was well tolerated locally, was particularly suitable as an intrauterine foreign body: so it is not surprising when the German physician Richard RICHTER from Waldenberg near Breslau in 1909 a ring-shaped braid (diameter 27 mm) made of wire (drilled bronze aluminum alloy) Wire) and introduced "silkworm well" into the uterus, and hoped for a contraceptive success - he never published any successes, since the contraception was forbidden in Germany and RICHTER would have faced serious difficulties. Thus it came about that the Berlin GRAEFENBERG was able to "rediscover" the method around 1928 and in the period 1928/30 published three works in which he was able to report contraception with various forms of his "Silk Star" intruder pessary.
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