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.            )(1)


                              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 23, 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          273,901
               -----------------------------------------------------------------
    EACH       9    SOLE DISPOSITIVE POWER

  REPORTING         0

   PERSON      _________________________________________________________________
               10   SHARED DISPOSITIVE POWER
    WITH
                    273,901

--------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    273,901

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

                                                                      [_]

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

                    4.10%

--------------------------------------------------------------------------------
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          273,901
               -----------------------------------------------------------------
    EACH       9    SOLE DISPOSITIVE POWER

  REPORTING         0

   PERSON      _________________________________________________________________
               10   SHARED DISPOSITIVE POWER
    WITH
                    273,901

--------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    273,901

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

                                                                      [_]

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

                    4.10%

--------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON*

                    BD

--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No. 604258103                13D                   Page    of    Pages


-------------------------------------------------------------------------------
Page 3

                                        Schedule 13D Amendment No. 1

     This statement constitutes Amendment No. 1 to the statement on Schedule 13D
(the "Schedule 13D") filed with the Securities and Exchange Commission by Bear,
Stearns & Co. Inc. ("Bear Stearns") with respect to its ownership of the Common
Stock of Minntech Corporation. (the "Issuer").

Item 3:  Source and Amount of Funds or Other Consideration

     Not applicable

Item 5:  Interest in Securities of the Issuer (as of 08/23/01)

        (a)     The responses of Bear Stearns to Rows (11) through (13) of the
                cover page of this Amendment No. 1 to Schedule 13D are
                incorporated herein by reference. To the best of Bear Stearns'
                knowledge, none of its executive officers or directors
                beneficially own any Common Stock of the Issuer.

        (b)     The responses of Bear Stearns to Rows (7) through (10) of the
                cover page of this Amendment No. 1 to Schedule 13D are
                incorporated herein by reference.

        (c)     Since the date of its initial filing on Schedule 13D, Bear
                Stearns has effected transactions in the Common Stock of the
                Issuer. Information concerning transactions in the Common Stock
                effected by Bear Stearns is set forth on Appendix I.

        (d)     Not Applicable.

        (e)     By August 23,2001, Bear Stearns sold 127,200 shares of
                Minntech Corporation. Therefore, Bear Stearns ceased to
                be the beneficial owner of more than five percent of the
                Common Stock of the Issuer since the date of its
                original filing.




Page 4


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


Signature:

        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 28, 2001
                                        ----------------------------------------
                                                         (Date)


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


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


                                   APPENDIX I

                              Minntech Corporation

                      Trading from 08/23/01 through 08/10/2001
                             (Various Firm Accounts)

                                              ***** 08/23 *****
          5,000- MINNTECH CORP                  10.3400        51,698.27-
         30,000- MINNTECH CORP                  10.3000       308,989.70-
         16,200- MINNTECH CORP                  10.3000       166,854.43-
         13,800- MINNTECH CORP                  10.3000       142,135.26-
                                   ***** 08/21 *****
         28,000- MINNTECH CORP                  10.3290       289,202.35-
          9,000- MINNTECH CORP                  10.3290        92,957.90-
          3,000- MINNTECH CORP                  10.3290        30,985.96-
                                   ***** 08/20 *****
         24,300- MINNTECH CORP                  10.2512       249,095.85-
          3,000- MINNTECH CORP                  10.2500        30,748.97-
          2,000- MINNTECH CORP                  10.2500        20,499.31-
                                   ***** 08/10
          3,600  MINNTECH CORP                  10.2700        36,972.00
          1,900  MINNTECH CORP                  10.2700        19,513.00
          1,600  MINNTECH CORP                  10.2700        16,432.00


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