Dear Fialor,
MDD means Medical Device Directive with the details below. You have to fulfill these requirements according to MDD before you can place your medical devices on market in the EU:
COUNCIL DIRECTIVE 93/42/EEC
of 14 June 1993
concerning medical devices
(OJ L 169, 12.7.1993, p. 1)
Amended by:
►M1 Directive 98/79/EC of the European Parliament and of the Council of
27 October 1998
L 331 1 7.12.1998
►M2 Directive 2000/70/EC of the European Parliament and of the Council of
16 November 2000
L 313 22 13.12.2000
►M3 Directive 2001/104/EC of the European Parliament and of the Council
of 7 December 2001
L 6 50 10.1.2002
►M4 Regulation (EC) No 1882/2003 of the European Parliament and of the
Council of 29 September 2003
L 284 1 31.10.2003
►M5 Directive 2007/47/EC of the European Parliament and of the Council of
5 September 2007
L 247 21 21.9.2007
http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CONSLEG:1993L0042:20071011:en:PDF
The consolidated copy that includes all amendments can be obtained from the link above. In case the link does not work, please copy and paste in your browser.
The labelling requirements for EU are detailed in Article 17 regarding placing of CE Mark and in Annex I - Essential Requirements (paragraph 13 deals exclusively with labelling requirements).
I hope this information will be starting point for you.
Amjad Rana