EXHIBIT 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the use in this Registration Statement on Form S-1/A of our audit report, dated April 3, 2009, relating to the financial statements of BioDrain Medical, Inc. appearing in the Prospectus which are a part of this Registration Statement. We also consent to the reference to our Firm under captions “Experts” in the Prospectus.
Olsen Thielen & Co., Ltd.
/s/ Olsen Thielen & Co., Ltd.
St. Paul, Minnesota
April 3, 2009