Ultrasound Interactive Case Study: Ring IUD

Case presentation by: Jeff Bradley, RDMS - August, 1998
Email: jbradly@earthlink.net

 
Images:

 

I have enclosed the images I referred to in my e-mail. These are transverse and longitudinal images of the uterus. The patient is of Chinese descent, and she related to me that there never was a string on the IUD.

I have never seen a round IUD before and thought maybe someone on the OBGYN.NET may have some clue as to its name and why there is no string.

Sincerely, Jeff Bradley, RDMS

Comments by Dr. Joseph SK Woo MBBS, FRCOG (joewoo@hkstar.com)


The IUCD is the stainless steel 'Chinese ring' widely used in China for the last 20 years. We see quite a lot of these rings in Hong Kong from women who recently arrived from China and wanted to have them removed.

The 'original' of this device is the Graefenberg ring, I believe first being used in Graefenberg, Germany in the early 1960s, and was originally made of silver and copper. The Chinese subsequently produced a stainless-steel version of the device in the 1970s in the city of Shanghai and it was then called the 'Shanghai ring'. It became very popular and was used all over China as the 'main' contraceptive device, being cheap to produce, durable and effective. It was subsequently renamed the 'Chinese ring'. It is about an inch in diameter, very springy and flexible. It does not have a thread attached to it because it was not meant to be removed easily be a lay person or 'ordinary' practitioner. The rationale of course, was from the 'one-child-family' concept.

It can nevertheless be removed without too much hassle using a special hooking device which I have acquired in my office from some medical supplier in the Mainland. The ring is used, which you might be surprised to know, for what is called immediate post-placental insertion (IPPI) which is common in China, referring to the application of the ring immediately (within 10 minutes) of the delivery of the placenta and even during a Caesarean seation.

Quite a few papers have been written on this and it appears the expulsion and infection rates are not that high. I have also attached an updated Chinese ring which has a double helix, I presume to increase the efficacy of the device. I will also send you a picture of 20 other IUCDs in a separate file which you might find useful later on.


Photography of IUDs provided by Dr. Joseph SK Woo MBBS, FRCOG (joewoo@hkstar.com), Hong Kong

 

Comments by Gong, Xiaoming (Alan Gong), MD, Department of OB/GYN, Peking Union Medical College Hospital (PUMCH).  
Enter China-OBGYN.net by clicking here
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This ring IUD is widely used in mainland china for quite a long time. It is round, usually steel made.  It could be placed in the uterus for over 20 years. It could be removed with a ring holder. It's harder to remove after menopause.  In rare cases, we use Hysteroscopy to find the IUD. 
 
I will attach a photo of how the ring IUD is placed into the uterus. Hope you will have some idea about it.