ADDENDUM
      TO PLEDGE
      AGREEMENT

     

    THIS
      ADDENDUM TO PLEDGE AGREEMENT (the “Addendum”) is made and dated as of the
      23rd
      day of
      February, 2007 by and between Patient Safety Technologies, Inc., a Delaware
      corporation (“Debtor”), and Steven J. Caspi, an individual (“Secured
      Party”).

     

    RECITALS

     

    A. Whereas,
      Debtor and Secured Party entered into a Pledge Agreement dated as of September
      8, 2006 pursuant to the terms of that certain Secured Convertible Promissory
      Note dated as of even date therewith (as the same may be amended, extended
      or
      replaced from time to time, the “Note”), issued pursuant to that certain Note
      and Warrant Purchase Agreement dated as of even date therewith and executed
      by
      the parties (as the same may be amended, extended or replaced from time to
      time,
      the “Purchase Agreement”), given in consideration of that certain loan from
      Secured Party to Debtor in the principal amount of $1,495,280.89 (the “Loan”).
      Capitalized terms used herein without definition have the meanings assigned
      thereto in the Purchase Agreement.

     

    B. Since
      the
      effective date of the Pledge Agreement, the 2,421,292 shares in Digicorp, a
      Utah
      corporation, referenced on Schedule I to the Pledge Agreement (the “Shares”) and
      pledged as collateral for the Loan, have been sold, and Debtor is holding a
      Non-Recourse Promissory Note (“the Non-Recourse Note”) and a Security and Pledge
      Agreement (“Security Agreement”) from the purchaser of the shares, both dated
      December 27, 2006, the Security Agreement pledging as collateral for the
      Non-Recourse Note a security interest in the Shares. The Non-Recourse Note
      and
      the Security Agreement are attached hereto as Exhibits “A” and “B”,
      respectively.

     

    C. Debtor
      has agreed to grant to Secured Party, as further collateral for the Loan, all
      of
      its right, title and interest in and to the Non-Recourse Note and the Security
      Agreement.

     

    NOW,
      THEREFORE, in consideration of the above Recitals and for other good and
      valuable consideration, the receipt and adequacy of which are hereby
      acknowledged, the parties hereto hereby agree as follows:

     

    AGREEMENT

     

    1. Collateral
      Assignment.

     

    Debtor
      hereby pledges, assigns and grants to Secured Party all of its right, title
      and
      interest in and to the Non-Recourse Note and the Security Agreement, attached
      hereto as Exhibits “A” and “B”, respectively, to further secure payment and
      performance of Debtor’s obligations under the Loan. All other terms of the
      Pledge Agreement shall remain the same.

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

     

    2. Execution
      in Counterparts.

     

    This
      Addendum to Pledge Agreement may be executed in counterparts, each of which
      when
      so executed shall be deemed to be an original and all of which when taken
      together shall constitute one and the same agreement.

     

    
      	
              EXECUTED
                as of the date first written above. 

            	
            
	 	 	 	 
	
              DEBTOR: 

            	PATIENT SAFETY TECHNOLOGIES,
              INC.,
	 	a Delaware
              corporation 
	 	 	 	 
	 	By: 	 
	 	Name: 	 
	 	Title: 	 
	 	 	 	 
	 	Address: 	1800 Century Park East, Suite
              200
	 	 	Los Angeles, CA
              90067 


    

     

    
      	
              SECURED
                PARTY:

            	 
	 	
            
	 	By: 	 
	 	Name: 	Steven
              J. Caspi 
	 	 	 	 
	 	Address: 	3010 Westchester Avenue
	 	 	Purchase, New York
              10577


    

     

    
      
         

      

      
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