-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 UdXVKZjqByjf3z8htRtdkABlrgmkUaKEABKR6TTrM1FMvPtCg1zyqG3bLSKS/wRH
 F/HnRdPbHYWD4aEu6QT0wQ==

<SEC-DOCUMENT>0001221109-10-000001.txt : 20100107
<SEC-HEADER>0001221109-10-000001.hdr.sgml : 20100107
<ACCEPTANCE-DATETIME>20100107164205
ACCESSION NUMBER:		0001221109-10-000001
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090806
FILED AS OF DATE:		20100107
DATE AS OF CHANGE:		20100107

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BATTAT EMILE A
		CENTRAL INDEX KEY:			0001221109

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32982
		FILM NUMBER:		10515241

	MAIL ADDRESS:	
		STREET 1:		ONE ALLENTOWN PARKWAY
		CITY:			ALLEN
		STATE:			TX
		ZIP:			75002

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ATRION CORP
		CENTRAL INDEX KEY:			0000701288
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				630821819
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1203

	BUSINESS ADDRESS:	
		STREET 1:		ONE ALLENTOWN PARKWAY
		CITY:			ALLEN
		STATE:			TX
		ZIP:			75002
		BUSINESS PHONE:		9723909800

	MAIL ADDRESS:	
		STREET 1:		ONE ALLENTOWN PARKWAY
		CITY:			ALLEN
		STATE:			TX
		ZIP:			75002

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALATENN RESOURCES INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2009-08-06</periodOfReport>

    <dateOfOriginalSubmission>2009-08-07</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000701288</issuerCik>
        <issuerName>ATRION CORP</issuerName>
        <issuerTradingSymbol>ATRI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001221109</rptOwnerCik>
            <rptOwnerName>BATTAT EMILE A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE ALLENTOWN PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ALLEN</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2009-08-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>400</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>130.055</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>197880</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Does not include 25,000 Stock Options for the purchase of Atrion Corporation Common Shares held by the Reporting Person</footnote>
        <footnote id="F2">Amendment filed to correct the number of shares beneficially owned by the Reporting Person.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Emile A. Battat</signatureName>
        <signatureDate>2010-01-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----