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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0000904454-08-000221.txt : 20080605
<SEC-HEADER>0000904454-08-000221.hdr.sgml : 20080605
<ACCEPTANCE-DATETIME>20080605122528
ACCESSION NUMBER:		0000904454-08-000221
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070614
FILED AS OF DATE:		20080605
DATE AS OF CHANGE:		20080605

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Volcano CORP
		CENTRAL INDEX KEY:			0001354217
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		IRS NUMBER:				330928885
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2870 KILGORE ROAD
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670
		BUSINESS PHONE:		800-228-4728

	MAIL ADDRESS:	
		STREET 1:		2870 KILGORE ROAD
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DOVEY BRIAN H
		CENTRAL INDEX KEY:			0001207786

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-52045
		FILM NUMBER:		08882425

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		6096835656

	MAIL ADDRESS:	
		STREET 1:		ONE PALMER SQUARE
		CITY:			PRINCETON
		STATE:			NJ
		ZIP:			08542
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-06-14</periodOfReport>

    <issuer>
        <issuerCik>0001354217</issuerCik>
        <issuerName>Volcano CORP</issuerName>
        <issuerTradingSymbol>VOLC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001207786</rptOwnerCik>
            <rptOwnerName>DOVEY BRIAN H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O DOMAIN ASSOCIATES, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>ONE PALMER SQUARE</rptOwnerStreet2>
            <rptOwnerCity>PRINCETON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08542</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-06-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>39029</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>20.61</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">As of the date that this Form 4 is being filed, the Reporting Person also indirectly beneficially owns 56,718 shares of Common Stock held by Domain Associates, L.L.C., 2,336,472 shares of Common Stock held by Domain Partners IV, L.P., 3,309,039 shares of Common Stock held by Domain Partners V, L.P., 18,484 shares of Common Stock held by DP IV Associates, L.P. and 78,168 shares of Common Stock held by DP V Associates, L.P.</footnote>
        <footnote id="F2">The Reporting Person is a Managing Member of Domain Associates, L.L.C. and a Managing Member of One Palmer Square Associates IV, L.L.C., which is the sole general partner of Domain Partners IV, L.P. and DP IV Associates, L.P., and a Managing Member of One Palmer Square Associates V, L.P., which is the sole general partner of Domain Partners V, L.P. and DP V Associates, L.P.  Pursuant to Instruction 4(b)(iv) of Form 4, the Reporting Person has elected to report as indirectly beneficially owned the entire number of securities beneficially owned by each such entity.  The Reporting Person disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his or her pecuniary interest therein and/or that are not actually distributed to him or her.</footnote>
        <footnote id="F3">The sale of shares on 6/14/07 reported herein is deemed incorporated into all Form 4s filed on behalf of the Reporting Person subsequent to 6/14/07.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Kathleen K. Schoemaker, Attorney-in-Fact</signatureName>
        <signatureDate>2008-06-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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