Covidien Ltd. has announced that one of its subsidiaries has acquired 91 percent of the outstanding shares of Tissue Science Laboratories and has declared the public tender offer wholly unconditional.

Covidien launched the public tender offer in the UK for all of Tissue Science Laboratories outstanding shares held by UK residents on March 12, 2008.

The offer will remain open until further notice and any remaining shareholders who wish to accept the offer have been advised to act without delay.