SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                 SCHEDULE 13D
                                (Rule 13d-101)

            INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                 RULE 13d-2(a)

                         (Amendment No.          ) ( )


                             Minntech Corporation
--------------------------------------------------------------------------------
                                (Name of Issuer)


                                  Common Stock
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    604258103
--------------------------------------------------------------------------------
                                 (CUSIP Number)
                  Allen B. Holeman, Bear, Stearns & Co. Inc.
                  115 South Jefferson Road, Whippany, NJ 07981
                                 (973) 793-2202
--------------------------------------------------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)


                                August 9, 2001
--------------------------------------------------------------------------------
             (Date of Event which Requires Filing of This Statement)

     If the filing  person has  previously  filed a statement on Schedule 13G to
report the  acquisition  that is the subject of this Schedule 13D, and is filing
this  schedule  because  of Rule  13d-1(e),  13d-1(f)  or  13d-1(g),  check  the
following box [_].


          Note:  Schedules filed in paper format shall include a signed original
     and five copies of the schedule,  including all exhibits. See Rule 13d-7(b)
     for other parties to whom copies are to be sent.

                         (Continued on following pages)
                              (Page 1 of    Pages)

----------
(1)  The  remainder  of this  cover  page  shall be filled  out for a  reporting
     person's  initial  filing on this form with respect to the subject class of
     securities,  and for any subsequent amendment containing  information which
     would alter disclosures provided in a prior cover page.

     The  information  required on the remainder of this cover page shall not be
deemed to be "filed"  for the purpose of Section 18 of the  Securities  Exchange
Act of 1934 or otherwise  subject to the  liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


(SC13D-07/98)


CUSIP No.    604258103                 13D                   Page    of    Pages


________________________________________________________________________________
1    NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                The Bear Stearns Companies Inc.**
                                IRS # 13-3286161
________________________________________________________________________________
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [_]

________________________________________________________________________________
3    SEC USE ONLY



________________________________________________________________________________
4    SOURCE OF FUNDS*

                                 WC, OO

________________________________________________________________________________
5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
6    CITIZENSHIP OR PLACE OF ORGANIZATION

                                    Delaware

________________________________________________________________________________
               7    SOLE VOTING POWER

  NUMBER OF
                    0
   SHARES      _________________________________________________________________
               8    SHARED VOTING POWER
BENEFICIALLY

  OWNED BY          401,101
               _________________________________________________________________
    EACH       9    SOLE DISPOSITIVE POWER

  REPORTING         0

   PERSON      _________________________________________________________________
               10   SHARED DISPOSITIVE POWER
    WITH
                    401,101

________________________________________________________________________________
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                    401,101

________________________________________________________________________________
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                                     6.00%

________________________________________________________________________________
14   TYPE OF REPORTING PERSON*

                                       HC

________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!



1    NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                               Bear, Stearns & Co. Inc.**
                                IRS # 13-3299429
________________________________________________________________________________
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [_]

________________________________________________________________________________
3    SEC USE ONLY



________________________________________________________________________________
4    SOURCE OF FUNDS*

                                       WC, OO

________________________________________________________________________________
5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



________________________________________________________________________________
6    CITIZENSHIP OR PLACE OF ORGANIZATION

                                    Delaware

________________________________________________________________________________
               7    SOLE VOTING POWER

  NUMBER OF
                    0
   SHARES      _________________________________________________________________
               8    SHARED VOTING POWER
BENEFICIALLY

  OWNED BY          401,101
               _________________________________________________________________
    EACH       9    SOLE DISPOSITIVE POWER

  REPORTING         0

   PERSON      _________________________________________________________________
               10   SHARED DISPOSITIVE POWER
    WITH
                    401,101

________________________________________________________________________________
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                    401,101

________________________________________________________________________________
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [_]

________________________________________________________________________________
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                                     6.00%

________________________________________________________________________________
14   TYPE OF REPORTING PERSON*

                                       BD

________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.   604258103                  13D                   Page    of    Pages


________________________________________________________________________________
Item 1.  Security and Issuer.
          Common Stock             Minntech Corporation
                                   14605 28th Avenue North
                                                 Minneapolis, MN  55447


________________________________________________________________________________
Item 2.  Identity and Background.

     (a)Name:  Bear, Stearns & Co. Inc. ("Bear Stearns")

     (b)Place of Organization:     Delaware

     (c)(i)Principal Business:   Securities Broker/Dealer
        (ii)         Address:    245 Park Avenue
                                 New York, NY 10167
     (d)None

     (e)See Appendix II

     (f)See Appendix I

________________________________________________________________________________
Item 3.  Source and Amount of Funds or Other Consideration.

The aggregate purchase price of the 401,101 shares of Common Stock
was approximately $4,011,010.00.
________________________________________________________________________________
Item 4.  Purpose of Transaction.

Bear Stearns has acquired the Common Stock of Minntech Corporation
in the ordinary course of its business as a broker/dealer in connection with its
trading and investment activities. Bear Stearns may acquire additional
securities of the Issuer or dispose of securities of the Issuer in connection
with such trading and investment activities. Although the foregoing represents
the range of activities presently contemplated by Bear Stearns with respect to
the Issuer, it should be noted that the possible activities of Bear Stearns are
subject to change at any time.
Except as set forth above, Bear Stearns has no present plans or intentions
which relate to or would result in any of the actions described in
subparagraph (a) through (j) of item 4 of Schedule 13D.


________________________________________________________________________________
Item 5.  Interest in Securities of the Issuer as of 8/9/2001.

     (a)Number:                                                  401,101
        Percentage:                                              6.00%

     (b)1.Sole power to vote or to direct the vote:              0
        2.Shared power to vote or to direct the vote:            401,101
        3.Sole power to dispose or to direct the disposition:    0
        4.Shared power to dispose or to direct the disposition:  401,101

     (c)Information concerning transactions in the common stock effected by
        Bear Stearns is set forth on Appendix III hereto.

     (d)Inapplicable.

     (e)Inapplicable.

________________________________________________________________________________
Item 6.  Contracts, Arrangements, Understandings or Relationships with Respect
         to Securities of the Issuer.


                                      None

________________________________________________________________________________
Item 7.  Material to be Filed as Exhibits.

                                      None

________________________________________________________________________________


**Bear Stearns & Co. is a subsidiary of The Bear Stearns Companies Inc.



     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.


                                                     August 17, 2001
                                        ----------------------------------------
                                                         (Date)


                                                          /S/
                                        ----------------------------------------
                                                       (Signature)


                                       Barry J. Cohen/Senior Managing Director
                                        ----------------------------------------
                                                       (Name/Title)


                                 APPENDIX I
          DIRECTORS AND EXECUTIVE OFFICERS OF BEAR, STEARNS & CO. INC.

Name                      Principal Occupation or Employment

James E. Cayne            Chairman of the Board/Chief Executive Officer
                          Chairman of the Management and Compensation Committee

Alan D. Schwartz          President and Co-Chief Operating Officer

Warren J. Spector         President and Co-Chief Operating Officer

Alan C. Greenberg         Chairman of the Executive Committee

Bruce E. Geismar          Chief Operations Officer

Mark E. Lehman            Executive Vice President/General Counsel
                          Chief Legal Officer

Michael Minikes           Treasurer

Samuel L. Molinaro Jr.    Chief Financial Officer/Senior Vice President-Finance

E. John Rosenwald Jr.     Vice-Chairman of the Board

Michael L. Tarnopol       Vice-Chairman of the Board

Kenneth L. Edlow          Secretary

Denis A. Bovin            Director

Peter D. Cherasia         Director

Ralph R. Cioffi           Director

Barry J. Cohen            Director

Wendy L. de Monchaux      Director

Daniel L. Keating         Director

John L. Knight            Director

David A. Liebowitz        Director

Richard R. Lindsey        Director

Bruce M. Lisman           Director

Roland N. Livney          Director

Jeffrey Mayer             Director

Fares D. Noujaim          Director

Craig M. Overlander       Director

Stephen E. Raphael        Director

Robert M. Steinberg       Director

Donald W. Tang            Director

Michael J. Urfirer        Director

Eli Wachtel               Director

Uzi Zucker                Director


John L. Knight's  business address is One Canada Square London E16 5AD
England. All other Directors and Executive Officers are citizens of the United
States and their business address is 245 Park Avenue, New York, New York 10167.
Bear Stearns & Co. Inc. is a wholly-owned subsidiary of the Bear Stearns
Companies Inc. and of the persons named, all but John L. Knight hold similar
office in the parent company.

                                  APPENDIX II

                               Minntech Corporation
                      Trading from 06/11/01 through 08/09/2001
                              (Various Firm's Accounts)

                                    ***** 08/09 *****
    37,500  MINNTECH CORP                  10.2376       383,910.00
    20,200  MINNTECH CORP                  10.2376       206,799.52
    17,300  MINNTECH CORP                  10.2376       177,110.48
                                    ***** 08/06 *****
     6,400  MINNTECH CORP                  10.2392        65,530.88
     3,400  MINNTECH CORP                  10.2392        34,813.28
     2,900  MINNTECH CORP                  10.2392        29,693.68
                                    ***** 07/31 *****
     1,000  MINNTECH CORP                  10.1400        10,140.00
                                    ***** 07/17 *****
    26,000  MINNTECH CORP                  9.9974        259,932.40
    13,500  MINNTECH CORP                  9.9974        134,964.90
    10,500  MINNTECH CORP                  9.9974        104,972.70
                                    ***** 07/16 *****
    41,000  MINNTECH CORP                  9.9572        408,245.20
    20,400  MINNTECH CORP                  9.9572        203,126.88
    16,900  MINNTECH CORP                  9.9572        168,276.68
                                    ***** 06/12 *****
     4,100  MINNTECH CORP                  10.0200        41,082.00







Attention.  Intentional  misstatements  or omissions of fact constitute  federal
criminal violations (see 18 U.S.C. 1001).