A low profile adaptor for use with a medical catheter. In one embodiment, the adaptor comprises a lower connector portion, an upper connector portion and a valve. The lower connector portion comprises a tubular portion and an annular portion, the annular portion radially surrounding the tubular portion...http://www.google.de/patents/US8187253?utm_source=gb-gplus-sharePatent US8187253 - Low profile adaptor for use with a medical catheter