-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 K6nikQOgZpATKxXVOBJoAYWSDtx0xiHjz2L3Uih/IbWlS+XUO+NEC0fIHF2OsFQ6
 5Ac1+BBtvV2GbiHlIU4jdg==

<SEC-DOCUMENT>0001227190-07-000006.txt : 20070425
<SEC-HEADER>0001227190-07-000006.hdr.sgml : 20070425
<ACCEPTANCE-DATETIME>20070425211155
ACCESSION NUMBER:		0001227190-07-000006
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070423
FILED AS OF DATE:		20070425
DATE AS OF CHANGE:		20070425

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SyntheMed, Inc.
		CENTRAL INDEX KEY:			0000889428
		STANDARD INDUSTRIAL CLASSIFICATION:	ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES [3842]
		IRS NUMBER:				141745197
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 219
		CITY:			LITTLE SILVER
		STATE:			NJ
		ZIP:			07739
		BUSINESS PHONE:		7327281769

	MAIL ADDRESS:	
		STREET 1:		PO BOX 219
		CITY:			LITTLE SILVER
		STATE:			NJ
		ZIP:			07739

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LIFE MEDICAL SCIENCES INC
		DATE OF NAME CHANGE:	19930328

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FRANKLIN RICHARD L
		CENTRAL INDEX KEY:			0001252874

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20580
		FILM NUMBER:		07788996

	BUSINESS ADDRESS:	
		STREET 1:		C/O LIFE MEDICAL SCIENCES INC
		STREET 2:		P O BO 219
		CITY:			LITTLE SILVER
		STATE:			NJ
		ZIP:			07739
		BUSINESS PHONE:		7327281769

	MAIL ADDRESS:	
		STREET 1:		C/O LIFE MEDICAL SCIENCES INC
		STREET 2:		P O BOX 219
		CITY:			LITTLE SILVER
		STATE:			NJ
		ZIP:			07739
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-04-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000889428</issuerCik>
        <issuerName>SyntheMed, Inc.</issuerName>
        <issuerTradingSymbol>symd</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001252874</rptOwnerCik>
            <rptOwnerName>FRANKLIN RICHARD L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SYNTHEMED, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>200 MIDDLESEX ESSEX TURNPIKE, SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>ISELIN</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08830</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman of the Board</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.85</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-04-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>65000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-04-23</value>
            </exerciseDate>
            <expirationDate>
                <value>2017-04-23</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>65000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>65000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <ownerSignature>
        <signatureName>Richard L. Franklin, by Keith Moskowitz, attorney-in-fact</signatureName>
        <signatureDate>2007-04-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----