EXHIBIT 10.11

                     INTERNATIONAL INVESTMENT PARTNERS, LTD.
                            RICHMOND BUSINESS CENTRE
                             NORTH BRUNSWICK STREET
                                DUBLIN 7, IRELAND

Joseph DelVecchio
Executive Vice President and Chief Operating Officer
Medical Technology & Innovations, Inc.
Medical Technology, Inc
Steridyne Corporation
3725 Investment Lane
Riviera Beach, FL 33404 USA

June 6, 2000

Dear Mr. DelVecchio:

You have been notified by International  Investment  Partners,  Ltd. (Delaware),
located in  Lancaster,  PA, USA, of its  dissolution  as of May 30,  2000.  As a
result  of  the  dissolution,  its  agency  relationship  with  my  company  has
terminated. That company acted as the agent for my company in the Loan Agreement
and associated  agreements with your companies,  dated January 21, 2000. Because
of the termination of that agency  relationship,  it is necessary to amend those
loan documents to substitute my company as the Lender.

The relationship  between your companies and my company,  as the principal under
those  agreements,  continues  as  before.  This  letter is to  confirm  that my
company,  rather  than its  former  agent,  is the  Lender in those  agreements.
Otherwise,  there are no  changes to the  agreements.  All  obligations  of your
companies to the Lender (now to be recited as set forth below) remain as before.

The Loan  Agreement,  the Note,  the  General  Security  Agreement,  the  Patent
Collateral  Assignment  and Security  Agreement,  the  Guaranty  and  Suretyship
Agreement of Medical Technology, Inc., and the Guaranty and Suretyship Agreement
of Steridyne  Corporation do not need to be modified other than to show that the
Lender is:

                      International Investment Partners, Ltd
                      Richmond Business Centre
                      North Brunswick Street
                      Dublin 7, Ireland


Your  acknowledgement  of this letter, and your agreement to the substitution of
the identity of the Lender,  will be adequate to amend those agreements  without
having to rewrite the entire document group.

If you agree with this  substitution  and amendment,  kindly sign both copies of
this letter, and return one copy to me.

Truly yours,
/s/ Harry McGinn
Harry McGinn
President
International Investment Partners, Ltd.

ACKNOWLEDGED AND AGREED TO: /s/ Joseph DelVecchio
                           ---------------------------------------
                           Joseph DelVecchio
                           Executive Vice President and Chief Operating Officer
                           Medical Technology & Innovations, Inc.
                           Medical Technology, Inc.
                           Steridyne Corporation