NOTICE OF GUARANTEED DELIVERY
(NOT TO BE USED FOR SIGNATURE GUARANTEE)
TO TENDER SHARES OF COMMON STOCK AND CLASS B COMMON STOCK
PURSUANT TO THE OFFER TO PURCHASE DATED APRIL 4, 1996
AAC ACQUISITION, INC.
A WHOLLY OWNED SUBSIDIARY OF
This Notice of Guaranteed Delivery, or one substantially equivalent to the attached form, must be used to accept
the Offer (as defined below) if (i) certificates for shares of Common Stock, par value $.01 per share and/or
certificates for shares of Class B Common Stock, par value $.01 per share (together, the "Shares"), of
MediSense, Inc. and all other documents required by the Letter of Transmittal cannot be delivered to the
Depositary by the expiration of the Offer (as defined in the Offer to Purchase) or (ii) the procedures for delivery
of book-entry transfer cannot be completed on a timely basis. This Notice of Guaranteed Delivery may be
delivered by hand or sent by facsimile transmission or mail to the Depositary. See "The Tender Offer -- 3.
Procedure for Tendering Shares" in the Offer to Purchase.
THE DEPOSITARY FOR THE OFFER IS:
The First National Bank of Boston
DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS
SET FORTH ABOVE OR TRANSMISSION OF INSTRUCTIONS VIA A FACSIMILE
TRANSMISSION TO A NUMBER OTHER THAN AS SET FORTH ABOVE DOES NOT CONSTITUTE
A VALID DELIVERY.
This Notice of Guaranteed Delivery is not to be used to guarantee signatures. If a signature of a Letter of
Transmittal is required to be guaranteed by an "Eligible Institution" under the instructions thereto, such signature
guarantee must appear in the applicable space provided in the signature box on the Letter of Transmittal.
Ladies and Gentlemen:
The undersigned hereby tenders to AAC Acquisition, Inc. (the "Purchaser"), upon the terms and subject to the
conditions set forth in the Offer to Purchase dated April 4, 1996 and the related Letter of Transmittal (which
together constitute the Offer), recei