-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 X/lZFYb5duKk1a/60OrjiQ==

<SEC-DOCUMENT>0001187570-04-000001.txt : 20040105
<SEC-HEADER>0001187570-04-000001.hdr.sgml : 20040105
<ACCEPTANCE-DATETIME>20040105180953
ACCESSION NUMBER:		0001187570-04-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031231
FILED AS OF DATE:		20040105

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LEONETTI DEBORAH A
		CENTRAL INDEX KEY:			0001187570

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26224
		FILM NUMBER:		04506791

	MAIL ADDRESS:	
		STREET 1:		311 C ENTERPRISE DRIVE
		CITY:			PLAINSBORO
		STATE:			NJ
		ZIP:			08536

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTEGRA LIFESCIENCES HOLDINGS CORP
		CENTRAL INDEX KEY:			0000917520
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				510317849
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		311 C ENTERPRISE DRIVE
		CITY:			PLAINSBORO
		STATE:			NJ
		ZIP:			08536
		BUSINESS PHONE:		6092750500

	MAIL ADDRESS:	
		STREET 1:		311 C ENTERPRISE DRIVE
		CITY:			PLAINSBORO
		STATE:			NJ
		ZIP:			08536

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTEGRA LIFESCIENCES CORP
		DATE OF NAME CHANGE:	19950614
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>dlform4010504_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<!-- - EDGAR Ease Plus 1.0                                   07/25/03  TT    -->
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
   <periodOfReport>2003-12-31</periodOfReport>
   <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000917520</issuerCik>
        <issuerName>INTEGRA LIFESCIENCES HOLDINGS CORP</issuerName>
        <issuerTradingSymbol>IART</issuerTradingSymbol>
   </issuer>
   <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001187570</rptOwnerCik>
            <rptOwnerName>LEONETTI DEBORAH A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>311 C ENTERPRISE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PLAINSBORO</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08536</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
         <isDirector>0</isDirector>
         <isOfficer>1</isOfficer>
         <isTenPercentOwner>0</isTenPercentOwner>
         <isOther>0</isOther>
         <officerTitle>VP Marketing</officerTitle>
      </reportingOwnerRelationship>
   </reportingOwner>
 <nonDerivativeTable>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>Common Stock</value>
      </securityTitle>
      <transactionDate>
         <value>2003-12-31</value>
            <footnoteId id="F1"/>
      </transactionDate>
      <deemedExecutionDate>
         <value>2003-12-31</value>
      </deemedExecutionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>I</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>1416</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>15.0025</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>A</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>7451</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
            <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </nonDerivativeTransaction>
 </nonDerivativeTable>
 <derivativeTable>
   <derivativeTransaction>
      <securityTitle>
         <value>Incentive Stock Option (right to buy)</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>28.78</value>
      </conversionOrExercisePrice>
      <transactionDate>
         <value>2004-01-02</value>
      </transactionDate>
      <deemedExecutionDate>
         <value>2004-01-02</value>
      </deemedExecutionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>A</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>4130</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>0.00</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>A</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <exerciseDate>
         <value>2005-01-02</value>
            <footnoteId id="F2"/>
      </exerciseDate>
      <expirationDate>
         <value>2010-01-02</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>4130</value>
         </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>4130</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
           <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeTransaction>
   <derivativeTransaction>
      <securityTitle>
         <value>Non-Qualified Stock Option (right to buy)</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>28.78</value>
      </conversionOrExercisePrice>
      <transactionDate>
         <value>2004-01-02</value>
      </transactionDate>
      <deemedExecutionDate>
         <value>2004-01-02</value>
      </deemedExecutionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>A</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>3870</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>0.00</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>A</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <exerciseDate>
         <value>2005-01-02</value>
            <footnoteId id="F2"/>
      </exerciseDate>
      <expirationDate>
         <value>2010-01-02</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>3870</value>
         </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>3870</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
           <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeTransaction>
 </derivativeTable>
   <footnotes>
      <footnote id="F1"> Shares acquired pursuant to Integra LifeSciences' 1998 Employee Stock Purchase Plan under Section 423 of the Internal Revenue Code of 1986, as amended, in a transaction exempt under Rule 16b-3.</footnote>

      <footnote id="F2"> 25% of the options vest one year after the grant date, with the remaining 75% vesting monthly thereafter 36 months.</footnote>
   </footnotes>
   <ownerSignature>
      <signatureName>/s/ Christie A. Davis-Cumming (Attorney in fact)</signatureName>
      <signatureDate>2004-01-05</signatureDate>
   </ownerSignature>
</ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----