- Statement of Changes in Beneficial Ownership (4)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * Herschkowitz Samuel	2. Issuer Name and Ticker or Trading Symbol BioDrain Medical, Inc. [ BIOR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                      __ X __ 10% Owner _____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle) 144 WILLOW STREET	3. Date of Earliest Transaction (MM/DD/YYYY) 5/4/2012
(Street) BROOKLYN, NY 11217 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _ X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.01 per share	5/4/2012		J (1)		4615385	A	(1)	18582770	I	By SOK Partners LLC

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Convertible Promissory Grid Note	(2)	5/4/2012		J   (3)		0   (3)		(4)	(4)	Common Stock, par value $0.01 per share	3425000	(3)	1	I	By SOK Partners LLC

Explanation of Responses:
( 1)	On May 17, 2012, the Issuer instructed its transfer agent to issue to SOK Partners LLC ("SOK Partners") a stock certificate evidencing 4,615,385 shares of the Issuer's Common Stock, par value $0.01 per share ("Shares"), registered in the name of SOK Partners. Such Shares represent the second equity bonus issuable to SOK Partners under the Note Purchase Agreement, dated as of March 28, 2012, between the Issuer and SOK Partners (the "SOK Note Purchase Agreement") upon SOK Partners having made aggregate advances under the Convertible Promissory Grid Note, dated March 28, 2012, made by the Issuer in favor of SOK Partners (the "Grid Note") of not less than $300,000, which event occurred on May 4, 2012. Atlantic Partners Alliance LLC ("Atlantic Partners") is the sole member of SOK Partners. Dr. Herschkowitz is one of the members of Atlantic Partners and therefore may be deemed to be the beneficial owner of securities of the Issuer held by SOK Partners.
( 2)	The outstanding principal amount under the Grid Note may be converted into a number of Shares equal to the then outstanding principal amount under the Grid Note divided by $0.065 (the "Grid Note Conversion Price"). The current outstanding principal amount under the Grid Note is $307,282. The Grid Note Conversion Price is subject to adjustment upon the occurrence of certain events, such as stock splits and the issuance of stock for a consideration per Share less than the Grid Note Conversion Price.
( 3)	On May 4, 2012, SOK Partners made an advance to the Issuer under the Grid Note that, combined with prior advances to the Issuer thereunder, increased the outstanding principal amount under the Grid Note to $307,282. The current aggregate outstanding principal amount under the Grid Note is convertible into an aggregate of 4,727,415 Shares.
( 4)	The Grid Note may be converted into Shares at any time at the option of SOK Partners. The Grid Note shall mandatorily be converted into Shares if the Issuer effects certain qualified transactions where, as a result thereof, the surviving entity has available at least $399,000 in additional cash and cash equivalents as a result of the transaction.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Herschkowitz Samuel 144 WILLOW STREET BROOKLYN, NY 11217		X

Signatures
/s/ Dr. Samuel Herschkowitz		5/17/2012
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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