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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_D955DBA19FCE2FA72E7C7F7FA8D3A65F_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_D955DBA19FCE2FA72E7C7F7FA8D3A65F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023 and thereafter</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_D955DBA19FCE2FA72E7C7F7FA8D3A65F_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_D955DBA19FCE2FA72E7C7F7FA8D3A65F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_D955DBA19FCE2FA72E7C7F7FA8D3A65F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_D955DBA19FCE2FA72E7C7F7FA8D3A65F" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_D955DBA19FCE2FA72E7C7F7FA8D3A65F" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_8BC7D51E29A29439C8297F7FA8D42578_totalLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_8BC7D51E29A29439C8297F7FA8D42578" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net carrying value, finite-lived intangible assets</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_8BC7D51E29A29439C8297F7FA8D42578_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_8BC7D51E29A29439C8297F7FA8D42578" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8BC7D51E29A29439C8297F7FA8D42578" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8BC7D51E29A29439C8297F7FA8D42578" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_8BC7D51E29A29439C8297F7FA8D42578" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_72242750E583E6DAE7E97F7FA9B5D58E_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_72242750E583E6DAE7E97F7FA9B5D58E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_72242750E583E6DAE7E97F7FA9B5D58E" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_72242750E583E6DAE7E97F7FA9B5D58E" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_902EBC941BF1BE7003B37F7FA9B5D758_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_902EBC941BF1BE7003B37F7FA9B5D758" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from operating activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_902EBC941BF1BE7003B37F7FA9B5D758_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_902EBC941BF1BE7003B37F7FA9B5D758" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
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    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_B5091E5619FBCBE146407F7FA9B56C54_verboseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_B5091E5619FBCBE146407F7FA9B56C54" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income (loss) to net cash provided by operating activities:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_B5091E5619FBCBE146407F7FA9B56C54_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_B5091E5619FBCBE146407F7FA9B56C54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
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    <link:label id="lab_us-gaap_DepreciationAndAmortization_C9F675089A3E4F95C5507F7FA9B540AF_verboseLabel_en-US" xlink:label="lab_us-gaap_DepreciationAndAmortization_C9F675089A3E4F95C5507F7FA9B540AF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
    <link:label id="lab_us-gaap_DepreciationAndAmortization_C9F675089A3E4F95C5507F7FA9B540AF_label_en-US" xlink:label="lab_us-gaap_DepreciationAndAmortization_C9F675089A3E4F95C5507F7FA9B540AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Depletion and Amortization, Nonproduction</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaap_DepreciationAndAmortization_C9F675089A3E4F95C5507F7FA9B540AF" xlink:type="locator" />
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    <link:label id="lab_ango_DeferredIncomeTaxRelatedToOperatingActivity_E7B6159D994B349FD35F7F7FA9B69A17_verboseLabel_en-US" xlink:label="lab_ango_DeferredIncomeTaxRelatedToOperatingActivity_E7B6159D994B349FD35F7F7FA9B69A17" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Deferred income tax provision</link:label>
    <link:label id="lab_ango_DeferredIncomeTaxRelatedToOperatingActivity_E7B6159D994B349FD35F7F7FA9B69A17_label_en-US" xlink:label="lab_ango_DeferredIncomeTaxRelatedToOperatingActivity_E7B6159D994B349FD35F7F7FA9B69A17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Related To Operating Activity</link:label>
    <link:label id="lab_ango_DeferredIncomeTaxRelatedToOperatingActivity_E7B6159D994B349FD35F7F7FA9B69A17_documentation_en-US" xlink:label="lab_ango_DeferredIncomeTaxRelatedToOperatingActivity_E7B6159D994B349FD35F7F7FA9B69A17" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cash flows from operating activities related to components of deferred income tax assets.</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensation_F51E5184AADA209A29DB7F7FA9B6E048_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_F51E5184AADA209A29DB7F7FA9B6E048" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stock based compensation</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_F51E5184AADA209A29DB7F7FA9B6E048_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_F51E5184AADA209A29DB7F7FA9B6E048" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation</link:label>
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    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_D2D7B1C576CC79A84E067F7FA9B690EB_verboseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_D2D7B1C576CC79A84E067F7FA9B690EB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Changes in accounts receivable allowances</link:label>
    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_D2D7B1C576CC79A84E067F7FA9B690EB_label_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_D2D7B1C576CC79A84E067F7FA9B690EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision for Doubtful Accounts</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProvisionForDoubtfulAccounts_D2D7B1C576CC79A84E067F7FA9B690EB" xlink:to="lab_us-gaap_ProvisionForDoubtfulAccounts_D2D7B1C576CC79A84E067F7FA9B690EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_4E24826B93F833CB93017F7FA9B64B20_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_4E24826B93F833CB93017F7FA9B64B20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Write-off of other assets</link:label>
    <link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_4E24826B93F833CB93017F7FA9B64B20_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_4E24826B93F833CB93017F7FA9B64B20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Transaction Gain (Loss), Unrealized</link:label>
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    <link:label id="lab_ango_ChangeInFairValueOfContingentConsideration_EB4FD8A4CB2DD377A1817F7FA9B64F3B_terseLabel_en-US" xlink:label="lab_ango_ChangeInFairValueOfContingentConsideration_EB4FD8A4CB2DD377A1817F7FA9B64F3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in fair value of contingent consideration</link:label>
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    <link:label id="lab_ango_ChangeInFairValueOfContingentConsideration_EB4FD8A4CB2DD377A1817F7FA9B64F3B_documentation_en-US" xlink:label="lab_ango_ChangeInFairValueOfContingentConsideration_EB4FD8A4CB2DD377A1817F7FA9B64F3B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The expense charged against earnings in the period resulting from remeasurement to fair value of contingent earn out liabilities related to  acquisitions.</link:label>
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    <link:label id="lab_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_0826FAE1ED6CFFADB0987F7FA9B676B9_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_0826FAE1ED6CFFADB0987F7FA9B676B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss on impairment/disposal of long-term assets</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNoncashIncomeExpense_C186B5CC244C6FC94C597F7FA9B6AC5D" xlink:to="lab_us-gaap_OtherNoncashIncomeExpense_C186B5CC244C6FC94C597F7FA9B6AC5D" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_55855C2C2C2953014A077F7FA9B6AEB2_verboseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_55855C2C2C2953014A077F7FA9B6AEB2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Changes in operating assets and liabilities, net of effects of acquisitions:</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_55855C2C2C2953014A077F7FA9B6AEB2_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_55855C2C2C2953014A077F7FA9B6AEB2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_55855C2C2C2953014A077F7FA9B6AEB2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_55855C2C2C2953014A077F7FA9B6AEB2" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_55855C2C2C2953014A077F7FA9B6AEB2" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_7BD97AFCBD7FA967B8167F7FA9B6F9B7_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_7BD97AFCBD7FA967B8167F7FA9B6F9B7" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_7BD97AFCBD7FA967B8167F7FA9B6F9B7_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_7BD97AFCBD7FA967B8167F7FA9B6F9B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accounts Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_7BD97AFCBD7FA967B8167F7FA9B6F9B7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_7BD97AFCBD7FA967B8167F7FA9B6F9B7" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_7BD97AFCBD7FA967B8167F7FA9B6F9B7" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInInventories_C6EF1F532986E508137E7F7FA9B662BA_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_C6EF1F532986E508137E7F7FA9B662BA" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInInventories_C6EF1F532986E508137E7F7FA9B662BA_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_C6EF1F532986E508137E7F7FA9B662BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Inventories</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_C6EF1F532986E508137E7F7FA9B662BA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInInventories_C6EF1F532986E508137E7F7FA9B662BA" xlink:to="lab_us-gaap_IncreaseDecreaseInInventories_C6EF1F532986E508137E7F7FA9B662BA" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D8D38635F38F59D1A8637F7FA9B62DB3_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D8D38635F38F59D1A8637F7FA9B62DB3" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Prepaid expenses and other</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D8D38635F38F59D1A8637F7FA9B62DB3_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D8D38635F38F59D1A8637F7FA9B62DB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Prepaid Expense and Other Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D8D38635F38F59D1A8637F7FA9B62DB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D8D38635F38F59D1A8637F7FA9B62DB3" xlink:to="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D8D38635F38F59D1A8637F7FA9B62DB3" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_72549D0EF79A2125E6B27F7FA9B61729_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_72549D0EF79A2125E6B27F7FA9B61729" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable, accrued liabilities and other long-term liabilities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_72549D0EF79A2125E6B27F7FA9B61729" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_72549D0EF79A2125E6B27F7FA9B61729" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_72549D0EF79A2125E6B27F7FA9B61729" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C929C2941535A9A8EEA27F7FA9B6A605_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C929C2941535A9A8EEA27F7FA9B6A605" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C929C2941535A9A8EEA27F7FA9B6A605_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C929C2941535A9A8EEA27F7FA9B6A605" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_C929C2941535A9A8EEA27F7FA9B6A605" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_C929C2941535A9A8EEA27F7FA9B6A605" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C929C2941535A9A8EEA27F7FA9B6A605" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_E5999964EDD6E41752947F7FA9B6B594_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_E5999964EDD6E41752947F7FA9B6B594" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from investing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_E5999964EDD6E41752947F7FA9B6B594_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_E5999964EDD6E41752947F7FA9B6B594" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_E5999964EDD6E41752947F7FA9B6B594" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_E5999964EDD6E41752947F7FA9B6B594" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_E5999964EDD6E41752947F7FA9B6B594" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8834575F83E6EC4E3E897F7FA9B7EFFE_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8834575F83E6EC4E3E897F7FA9B7EFFE" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Additions to property, plant and equipment</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8834575F83E6EC4E3E897F7FA9B7EFFE_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8834575F83E6EC4E3E897F7FA9B7EFFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8834575F83E6EC4E3E897F7FA9B7EFFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8834575F83E6EC4E3E897F7FA9B7EFFE" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8834575F83E6EC4E3E897F7FA9B7EFFE" xlink:type="arc" />
    <link:label id="lab_ango_PaymentsToAcquireIntangibleAssetsNetOfCashAcquired_4A476974C565BC5F69507F7FA9B722A1_negatedLabel_en-US" xlink:label="lab_ango_PaymentsToAcquireIntangibleAssetsNetOfCashAcquired_4A476974C565BC5F69507F7FA9B722A1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisition of intangible assets</link:label>
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    <link:label id="lab_ango_PaymentsToAcquireIntangibleAssetsNetOfCashAcquired_4A476974C565BC5F69507F7FA9B722A1_documentation_en-US" xlink:label="lab_ango_PaymentsToAcquireIntangibleAssetsNetOfCashAcquired_4A476974C565BC5F69507F7FA9B722A1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cash outflow associated with the acquisition of intangible assets, net of cash acquired from the purchase.</link:label>
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    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_6AA15F80BDFBD6AE16707F7FA9B71771_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_6AA15F80BDFBD6AE16707F7FA9B71771" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisition of warrants</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_6AA15F80BDFBD6AE16707F7FA9B71771_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_6AA15F80BDFBD6AE16707F7FA9B71771" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Other Investing Activities</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_E2C42ACE57A3586A459F7F7FA9B7B71A_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_E2C42ACE57A3586A459F7F7FA9B7B71A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale and Maturity of Marketable Securities</link:label>
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    <link:label id="lab_ango_EmployeePlanParticipatingEligibilityPeriod_48154C9145728E43C104AE4D3083E9D3_verboseLabel_en-US" xlink:label="lab_ango_EmployeePlanParticipatingEligibilityPeriod_48154C9145728E43C104AE4D3083E9D3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Employee eligible in participating in offering period</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_6B6D4CE37477B23F887BAE4D3083D71C_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_6B6D4CE37477B23F887BAE4D3083D71C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum number of shares to be offered</link:label>
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    <link:label id="lab_ango_SharebasedCompensationArrangementbySharebasedPaymentAwardWorkingHoursPerWeektobeEligible_19F2D36150440C414A9CAE4D30834FAC_terseLabel_en-US" xlink:label="lab_ango_SharebasedCompensationArrangementbySharebasedPaymentAwardWorkingHoursPerWeektobeEligible_19F2D36150440C414A9CAE4D30834FAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of working hours to be eligible (working hour)</link:label>
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    <link:label id="lab_ango_SharebasedCompensationArrangementbySharebasedPaymentAwardWorkingMonthsPerYeartobeEligible_81F4F21F3B285D82F72FAE4D3083C173_terseLabel_en-US" xlink:label="lab_ango_SharebasedCompensationArrangementbySharebasedPaymentAwardWorkingMonthsPerYeartobeEligible_81F4F21F3B285D82F72FAE4D3083C173" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of working months to be eligible</link:label>
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    <link:loc xlink:href="ango-20170531.xsd#ango_SharebasedCompensationArrangementbySharebasedPaymentAwardWorkingMonthsPerYeartobeEligible" xlink:label="loc_ango_SharebasedCompensationArrangementbySharebasedPaymentAwardWorkingMonthsPerYeartobeEligible_81F4F21F3B285D82F72FAE4D3083C173" xlink:type="locator" />
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    <link:label id="lab_ango_EmployeePlanParticipatingEligibilityThresholdPercentage_F0997EC8AFD8A30A0A22AE4D30835E89_verboseLabel_en-US" xlink:label="lab_ango_EmployeePlanParticipatingEligibilityThresholdPercentage_F0997EC8AFD8A30A0A22AE4D30835E89" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Employees ownership threshold</link:label>
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    <link:label id="lab_ango_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercentOnFirstDayOfOfferingPeriod_11FCD586FE3800F0F5D0AE4D30834D4D_verboseLabel_en-US" xlink:label="lab_ango_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercentOnFirstDayOfOfferingPeriod_11FCD586FE3800F0F5D0AE4D30834D4D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Percentage of fair market value of a share of common stock on the first day of the offering period</link:label>
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    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_BD5FE393B02625CB2C5FAE4D308390BD_verboseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_BD5FE393B02625CB2C5FAE4D308390BD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Percentage of fair market value of a share of common stock on the last day of the offering period</link:label>
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    <link:label id="lab_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272_terseLabel_en-US" xlink:label="lab_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Royalties, 2019</link:label>
    <link:label id="lab_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272_label_en-US" xlink:label="lab_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Royalties, Due in Third Year</link:label>
    <link:label id="lab_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272_documentation_en-US" xlink:label="lab_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Royalties, Due in Third Year</link:label>
    <link:loc xlink:href="ango-20170531.xsd#ango_RoyaltiesDueinThirdYear" xlink:label="loc_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272" xlink:to="lab_ango_RoyaltiesDueinThirdYear_97722F45F1914D86978A7F7FA8BFC272" xlink:type="arc" />
    <link:label id="lab_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9_terseLabel_en-US" xlink:label="lab_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Royalties, 2020</link:label>
    <link:label id="lab_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9_label_en-US" xlink:label="lab_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Royalties, Due in Fourth Year</link:label>
    <link:label id="lab_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9_documentation_en-US" xlink:label="lab_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Royalties, Due in Fourth Year</link:label>
    <link:loc xlink:href="ango-20170531.xsd#ango_RoyaltiesDueinFourthYear" xlink:label="loc_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9" xlink:to="lab_ango_RoyaltiesDueinFourthYear_2E82F43187B28A229C967F7FA8BF44C9" xlink:type="arc" />
    <link:label id="lab_ango_RoyaltiesDueinFifthYear_A286E237BEC2E1ADF5ED7F7FA8BFE6CF_terseLabel_en-US" xlink:label="lab_ango_RoyaltiesDueinFifthYear_A286E237BEC2E1ADF5ED7F7FA8BFE6CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Royalties, 2021</link:label>
    <link:label id="lab_ango_RoyaltiesDueinFifthYear_A286E237BEC2E1ADF5ED7F7FA8BFE6CF_label_en-US" xlink:label="lab_ango_RoyaltiesDueinFifthYear_A286E237BEC2E1ADF5ED7F7FA8BFE6CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Royalties, Due in Fifth Year</link:label>
    <link:label id="lab_ango_RoyaltiesDueinFifthYear_A286E237BEC2E1ADF5ED7F7FA8BFE6CF_documentation_en-US" xlink:label="lab_ango_RoyaltiesDueinFifthYear_A286E237BEC2E1ADF5ED7F7FA8BFE6CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Royalties, Due in Fifth Year</link:label>
    <link:loc xlink:href="ango-20170531.xsd#ango_RoyaltiesDueinFifthYear" xlink:label="loc_ango_RoyaltiesDueinFifthYear_A286E237BEC2E1ADF5ED7F7FA8BFE6CF" xlink:type="locator" />
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    <link:label id="lab_ango_RoyaltiesDueAfterFifthYear_2F55B41AC67E0B4EACAD7F7FA8BF28BA_terseLabel_en-US" xlink:label="lab_ango_RoyaltiesDueAfterFifthYear_2F55B41AC67E0B4EACAD7F7FA8BF28BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Royalties, 2022 and thereafter</link:label>
    <link:label id="lab_ango_RoyaltiesDueAfterFifthYear_2F55B41AC67E0B4EACAD7F7FA8BF28BA_label_en-US" xlink:label="lab_ango_RoyaltiesDueAfterFifthYear_2F55B41AC67E0B4EACAD7F7FA8BF28BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Royalties, Due After Fifth Year</link:label>
    <link:label id="lab_ango_RoyaltiesDueAfterFifthYear_2F55B41AC67E0B4EACAD7F7FA8BF28BA_documentation_en-US" xlink:label="lab_ango_RoyaltiesDueAfterFifthYear_2F55B41AC67E0B4EACAD7F7FA8BF28BA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Royalties, Due After Fifth Year</link:label>
    <link:loc xlink:href="ango-20170531.xsd#ango_RoyaltiesDueAfterFifthYear" xlink:label="loc_ango_RoyaltiesDueAfterFifthYear_2F55B41AC67E0B4EACAD7F7FA8BF28BA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherCommitment_3C502617063F622F45C27F7FA8BFF42D_totalLabel_en-US" xlink:label="lab_us-gaap_OtherCommitment_3C502617063F622F45C27F7FA8BFF42D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_OtherCommitment_3C502617063F622F45C27F7FA8BFF42D_label_en-US" xlink:label="lab_us-gaap_OtherCommitment_3C502617063F622F45C27F7FA8BFF42D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitment</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitment_3C502617063F622F45C27F7FA8BFF42D" xlink:to="lab_us-gaap_OtherCommitment_3C502617063F622F45C27F7FA8BFF42D" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCommitmentDueInSecondYear_61EC2F33DB9472998CC07F7FA8BFFCCF_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueInSecondYear_61EC2F33DB9472998CC07F7FA8BFFCCF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other, 2018</link:label>
    <link:label id="lab_us-gaap_OtherCommitmentDueInSecondYear_61EC2F33DB9472998CC07F7FA8BFFCCF_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueInSecondYear_61EC2F33DB9472998CC07F7FA8BFFCCF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitment, Due in Second Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherCommitmentDueInSecondYear" xlink:label="loc_us-gaap_OtherCommitmentDueInSecondYear_61EC2F33DB9472998CC07F7FA8BFFCCF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentDueInSecondYear_61EC2F33DB9472998CC07F7FA8BFFCCF" xlink:to="lab_us-gaap_OtherCommitmentDueInSecondYear_61EC2F33DB9472998CC07F7FA8BFFCCF" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCommitmentDueInThirdYear_CC841C79DAB4C7BCF8CE7F7FA8BF26A8_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueInThirdYear_CC841C79DAB4C7BCF8CE7F7FA8BF26A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other, 2019</link:label>
    <link:label id="lab_us-gaap_OtherCommitmentDueInThirdYear_CC841C79DAB4C7BCF8CE7F7FA8BF26A8_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueInThirdYear_CC841C79DAB4C7BCF8CE7F7FA8BF26A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitment, Due in Third Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherCommitmentDueInThirdYear" xlink:label="loc_us-gaap_OtherCommitmentDueInThirdYear_CC841C79DAB4C7BCF8CE7F7FA8BF26A8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherCommitmentDueInFourthYear_6509D2B6B61EBCAEA89E7F7FA8BFDD56_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueInFourthYear_6509D2B6B61EBCAEA89E7F7FA8BFDD56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other, 2020</link:label>
    <link:label id="lab_us-gaap_OtherCommitmentDueInFourthYear_6509D2B6B61EBCAEA89E7F7FA8BFDD56_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueInFourthYear_6509D2B6B61EBCAEA89E7F7FA8BFDD56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitment, Due in Fourth Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherCommitmentDueInFourthYear" xlink:label="loc_us-gaap_OtherCommitmentDueInFourthYear_6509D2B6B61EBCAEA89E7F7FA8BFDD56" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentDueInFourthYear_6509D2B6B61EBCAEA89E7F7FA8BFDD56" xlink:to="lab_us-gaap_OtherCommitmentDueInFourthYear_6509D2B6B61EBCAEA89E7F7FA8BFDD56" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCommitmentDueInFifthYear_33FBFB9705CEF0B134837F7FA8C03989_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueInFifthYear_33FBFB9705CEF0B134837F7FA8C03989" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other, 2021</link:label>
    <link:label id="lab_us-gaap_OtherCommitmentDueInFifthYear_33FBFB9705CEF0B134837F7FA8C03989_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueInFifthYear_33FBFB9705CEF0B134837F7FA8C03989" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitment, Due in Fifth Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherCommitmentDueInFifthYear" xlink:label="loc_us-gaap_OtherCommitmentDueInFifthYear_33FBFB9705CEF0B134837F7FA8C03989" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentDueInFifthYear_33FBFB9705CEF0B134837F7FA8C03989" xlink:to="lab_us-gaap_OtherCommitmentDueInFifthYear_33FBFB9705CEF0B134837F7FA8C03989" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCommitmentDueAfterFifthYear_94D387ABA4F01EAB3FE07F7FA8C09DD4_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueAfterFifthYear_94D387ABA4F01EAB3FE07F7FA8C09DD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other, 2022 and thereafter</link:label>
    <link:label id="lab_us-gaap_OtherCommitmentDueAfterFifthYear_94D387ABA4F01EAB3FE07F7FA8C09DD4_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentDueAfterFifthYear_94D387ABA4F01EAB3FE07F7FA8C09DD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitment, Due after Fifth Year</link:label>
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    <link:label id="lab_us-gaap_ContractualObligation_5902AC874DA138EDF9747F7FA8C053BE_totalLabel_en-US" xlink:label="lab_us-gaap_ContractualObligation_5902AC874DA138EDF9747F7FA8C053BE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_ContractualObligation_5902AC874DA138EDF9747F7FA8C053BE_label_en-US" xlink:label="lab_us-gaap_ContractualObligation_5902AC874DA138EDF9747F7FA8C053BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation</link:label>
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    <link:loc xlink:href="ango-20170531.xsd#ango_OncologySurgeryMember" xlink:label="loc_ango_OncologySurgeryMember_3A3783E6A3918EEFE9547F7FA9971F66" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongTermDebtByMaturityAbstract_1B2653E00F747EC2DA937F7FA8E4AF77_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtByMaturityAbstract_1B2653E00F747EC2DA937F7FA8E4AF77" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Future minimum principal payments on long-term debt</link:label>
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    <link:label id="lab_us-gaap_AvailableforsaleSecuritiesFailedAuctionValue_6102E425674DA082D67E8A93F5D484E2_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableforsaleSecuritiesFailedAuctionValue_6102E425674DA082D67E8A93F5D484E2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Investments in auction rate securities that failed auctions</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8B76FD158C99A12423E88A93F5D429DA_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8B76FD158C99A12423E88A93F5D429DA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Weighted average useful life</link:label>
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