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<!-- Created: Thu Nov 03 21:12:47 UTC 2011 -->  
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      <link:linkbaseRef xlink:type="simple" xlink:href="vkng-20110930_pre.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef"/>   
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      <link:roleType roleURI="http://www.vikingsystems.com/role/ConsolidatedBalanceSheet" id="vkng_ConsolidatedBalanceSheet"> 
        <link:definition>001 - Statement - BALANCE SHEETS</link:definition> 
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/ConsolidatedBalanceSheet_Parentheticals" id="vkng_ConsolidatedBalanceSheet_Parentheticals"> 
        <link:definition>002 - Statement - BALANCE SHEETS (Parentheticals)</link:definition>   
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        <link:usedOn>link:definitionLink</link:usedOn>     
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      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/ConsolidatedIncomeStatement" id="vkng_ConsolidatedIncomeStatement">  
        <link:definition>003 - Statement - STATEMENTS OF OPERATIONS</link:definition> 
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        <link:usedOn>link:definitionLink</link:usedOn>     
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      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/ConsolidatedCashFlow" id="vkng_ConsolidatedCashFlow">   
        <link:definition>004 - Statement - STATEMENTS OF CASH FLOWS</link:definition> 
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/Note" id="vkng_Note"> 
        <link:definition>005 - Disclosure - 1. INTERIM FINANCIAL STATEMENTS</link:definition>    
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/Note0" id="vkng_Note0">   
        <link:definition>006 - Disclosure - 2. LOSS PER SHARE</link:definition>     
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/Note00" id="vkng_Note00">     
        <link:definition>007 - Disclosure - 3. INVENTORIES</link:definition>  
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/Note000" id="vkng_Note000">  
        <link:definition>008 - Disclosure - 4. ACCRUED EXPENSES</link:definition>  
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/Note0000" id="vkng_Note0000">    
        <link:definition>009 - Disclosure - 5. SALE OF COMMON STOCK AND WARRANTS</link:definition>    
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        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/Note00000" id="vkng_Note00000"> 
        <link:definition>010 - Disclosure - 6. INVESTMENT AGREEMENT</link:definition> 
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        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
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      <link:roleType roleURI="http://www.vikingsystems.com/role/Note000000" id="vkng_Note000000">   
        <link:definition>011 - Disclosure - 7. STOCK-BASED COMPENSATION</link:definition>     
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      <link:roleType roleURI="http://www.vikingsystems.com/role/Note0000000" id="vkng_Note0000000">     
        <link:definition>012 - Disclosure - 8. WARRANTS TO PURCHASE COMMON STOCK</link:definition>    
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      <link:roleType roleURI="http://www.vikingsystems.com/role/Note00000000" id="vkng_Note00000000">  
        <link:definition>013 - Disclosure - 9. LEASE COMMITMENTS</link:definition>   
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        <link:usedOn>link:definitionLink</link:usedOn>     
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      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/Note000000000" id="vkng_Note000000000">    
        <link:definition>014 - Disclosure - 10. PATENT LICENSE AND SALE OF RELATED ASSETS</link:definition>   
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        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/Note0000000000" id="vkng_Note0000000000"> 
        <link:definition>015 - Disclosure - 11. RECENT ACCOUNTING PRONOUNCEMENTS</link:definition>    
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
      </link:roleType>   
      <link:roleType roleURI="http://www.vikingsystems.com/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">    
        <link:definition>000 - Disclosure - Document And Entity Information</link:definition>    
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
        <link:usedOn>link:calculationLink</link:usedOn> 
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  <xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>     
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>   
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  <xs:element name="CurrentAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="vkng_CurrentAssetsAbstract"/> 
  <xs:element name="CurrentLiabilitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="vkng_CurrentLiabilitiesAbstract"/> 
  <xs:element name="StatementsOfOperationsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="vkng_StatementsOfOperationsAbstract"/>    
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  <xs:element name="CashFlowsFromOperatingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="vkng_CashFlowsFromOperatingActivitiesAbstract"/>    
  <xs:element name="AdjustmentsToReconcileNetLossToNetCashUsedInOperatingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="vkng_AdjustmentsToReconcileNetLossToNetCashUsedInOperatingActivitiesAbstract"/> 
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