Exhibit 10.1


 


THIS NOTE HAS NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES
ACT OF 1933, AS AMENDED (THE “ACT”), OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION. THIS NOTE MAY
NOT BE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH ACT AND APPLICABLE STATE SECURITIES LAWS OR
PURSUANT TO AN APPLICABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF SUCH ACT AND SUCH LAWS.


 


VIKING SYSTEMS, INC.


SECURED PROMISSORY NOTE


 


	US$1,000,000	August 13, 2012






FOR VALUE RECEIVED, the undersigned, Viking
Systems, Inc., a Delaware corporation (the “Company”), hereby promises to pay, without setoff or counterclaim
(except as expressly provided herein), on the terms and conditions of this Promissory Note (as it may be amended from time to time,
this “Note”), to the order of CONMED Corporation, a New York corporation (together with its permitted successors,
assigns and tranferees, the “Holder”), the lesser of (a) the principal amount of one million United States Dollars
(US$1,000,000) and (b) the aggregate unpaid principal amount of all advances (each a “draw”) made by the Holder
to the Company from time to time hereunder (such lesser amount, the “Principal Amount”), with simple interest
thereon as set forth herein, on the earlier to occur of (i) the Maturity Date and (ii) when declared due and payable by the Holder
in writing upon the occurrence of an Event of Default.


Subject to the terms and conditions of this
Note, the Company shall have the right to draw upon this Note (a) on the date hereof, an amount equal to five hundred thousand
United States Dollars (US$500,000), and (b) on or after the date that is thirty (30) days after the date hereof, an amount equal
to five hundred thousand United States Dollars (US$500,000). The aggregate principal amount of all draws under this Note shall
not exceed one million United States Dollars (US$1,000,000). The Holder shall deliver the amount of any draw to the Company on
the requested date of the draw by wire transfer or such other means as is mutually agreed by the Holder and the Company; provided
that the Company shall provide the Holder with written notice of the second draw hereunder at least ten (10) days prior to the
requested date of such second draw. The date and amount of each draw made by the Holder to the Company, and each payment made on
account of the Principal Amount, shall be recorded by the Holder on its books and, prior to any transfer of this Note, endorsed
by the Holder on a schedule attached hereto or any continuation thereof; provided that the failure of the Holder to make
any such recordation or endorsement shall not affect the obligations of the Company to make a payment when due of any amount owing
under this Note in respect of the draws made hereunder.


All capitalized terms used and not otherwise
defined in this Note shall have the respective meanings set forth in the Merger Agreement (as defined below).






    	1



    	 	



    
 


Section
1

DEFINITIONS


 


		1.1	Definitions.
                                                                                                           In
                                                                                                           this Note, unless the
                                                                                                           context otherwise requires,
                                                                                                           the following words
                                                                                                           and expressions have
                                                                                                           the following meanings:



 


 “Business Day” means any
day except any Saturday, any Sunday, any day which is a federal legal holiday in the United States or any day on which banking
institutions in the State of New York are authorized or required by law or other governmental action to close.


 


“Collateral” has the meaning given
such term in Section 4.1.


 


“Company” has the meaning given
such term in the first introductory paragraph hereof.


 


“Default” means a condition or
event that, after notice or lapse of time or both, would constitute an Event of Default.


 


“Default Rate” means the rate equal
to the Interest Rate plus 2.0% per annum.


 


“draw” has the meaning given such
term in the first introductory paragraph hereof.


 


“Event of Default” has the meaning
given such term in Section 8.1.


 


“Holder” has the meaning given
such term in the introductory paragraph hereof.


 


“Indebtedness” means, with respect
to a specified Person, (a) all indebtedness of such Person for borrowed money; (b) all obligations of such Person for the deferred
purchase price of property or services (other than trade payables incurred in the ordinary course of business irrespective of when
paid); (c) all obligations of such Person evidenced by bonds, debentures, notes or other similar instruments; (d) all obligations
and liabilities of such Person created or arising under any conditional sales or other title retention agreement with respect to
property used and/or acquired by such Person, even though the rights and remedies of the lessor, seller and/or lender thereunder
are limited to repossession or sale of such property; (e) all capitalized lease obligations of such Person; (f) all aggregate mark-to-market
exposure of such Person under hedging agreements; (g) all obligations referred to in clauses (a) through (f) of this definition
of another Person guaranteed by the specified Person or secured by (or for which the holder of such Indebtedness has an existing
right, contingent or otherwise, to be secured by) a Lien upon property owned by the specified Person, whether or not the specified
Person has assumed or become liable for the payment of such Indebtedness.


 


“Indemnitees” has the meaning given
such term in Section 11.4.


 


“Indemnified Matters” has the meaning
given such term in Section 11.4.


 


“Interest Rate” means for any day
a fluctuating rate per annum equal to the Wall Street Journal Rate (as defined below) plus two percent (2%) per annum.


 



    	2



    	 	



    






“Maturity Date” means the date
that is ninety (90) calendar days following the earlier to occur of (x) the termination of the Merger Agreement for any reason
and (y) the Closing Date (as defined in the Merger Agreement); provided, however, that, if (i) the Company terminates
the Merger Agreement pursuant to Section 8.3(b) thereof and/or (ii) the Company enters into an Alternative Acquisition Agreement,
then the “Maturity Date” means the date that is two (2) Business Days after the earlier to occur of the events described
in clauses (i) and (ii).


“Merger Agreement”
means that certain Agreement and Plan of Merger, dated as of the date hereof, by and among the Company, the Holder, and Arrow
Merger Corporation.


“Note” has the meaning given such
term in the first introductory paragraph hereof.


“Permitted Liens” means: (a) Liens
for Taxes, assessments or other governmental charges that are not yet due and payable or are being contested in good faith by appropriate
proceedings and as to which the Company has set aside adequate reserves; (b) statutory Liens of landlords and Liens of carriers,
warehousemen, mechanics, materialmen and other similar Liens, in each case, incurred in the ordinary course of business for sums
not yet due and payable; (c) Liens to secure (or to obtain letters of credit that secure) the performance of tenders, statutory
obligations, surety bonds, appeal bonds, bids, leases (other than capitalized leases), performance bonds, purchase, construction
or sales contracts and other similar obligations, in each case not incurred or made in connection with the borrowing of money,
the obtaining of advances or credit or the payment of the deferred purchase price of property; (d) any attachment or judgment Lien
(provided that such Lien does not result in an Event of Default hereunder); and (e) leases or subleases granted to
others, easements, rights-of-way, restrictions and other similar charges or encumbrances, in each case incidental to, and not interfering
with, the ordinary conduct of the business of the Company (provided that such Liens do not, in the aggregate,
materially detract from the value of such property).


“Principal Amount” has the meaning
given such term in the first introductory paragraph hereof.


“Secured Obligations” has the meaning
given such term in Section 4.1.


“UCC” has the meaning given such
term in Section 4.1.


“Wall Street Journal Rate”
means a rate of interest per annum equal to the “prime rate” as published from time to time in the “Money Rates”
section of the Wall Street Journal as the average prime lending rate in effect for large U.S. banks (whether or not such rate
has actually been charged by any such bank), or if the Wall Street Journal ceases publication or ceases publishing the “prime
rate” on a regular basis, such other regularly published average prime rate applicable to such commercial banks as is acceptable
to the Holder in its reasonable discretion.







		1.2	Headings. Section headings in this Note are included herein
for convenience of reference only and shall not constitute a part of this Note for any other purpose.










    	3



    	 	



    
SECTION
2

INTEREST








		2.1	Interest



 


		(a)	This Note shall bear interest at the Interest Rate on the outstanding Principal Amount commencing on the date hereof through
payment in full of this Note. Interest shall accrue on a daily basis, and accrued interest shall be due and payable in cash at
the time of payment of all or any portion of the Principal Amount. Interest shall be calculated on the basis of a 360 day year
and the actual number of days elapsed during which it accrues. Interest shall compound annually on the anniversary of the issuance
of this Note.
	 	 	 



		(b)	Upon written notice by the Holder to the Company of the occurrence of any Event of Default and after any applicable cure period
as described in Section 8.1, the outstanding balance of the Principal Amount shall bear interest at the Default Rate commencing
on the date of notice to the Company of such Event of Default. Such default interest shall be payable on demand, and shall accrue
on the outstanding Principal Amount until the earlier of (i) waiver or cure (to the reasonable satisfaction of the Holder) of the
applicable Event of Default and (ii) agreement of the Holder to rescind the charging of interest at the Default Rate.







SECTION
3

PAYMENT






		3.1	Repayment. A
                                                                                                           single and final payment
                                                                                                           of the entire outstanding
                                                                                                           Principal Amount, accrued
                                                                                                           interest and other
                                                                                                           amounts payable hereunder
                                                                                                           shall be due and payable
                                                                                                           in full on the Maturity
                                                                                                           Date.



 


		3.2	Optional Prepayment.
The Company shall be permitted to prepay this Note, in whole or in part at any time prior to the Maturity Date. Amounts repaid
or prepaid may not be reborrowed. All partial prepayments hereunder shall be applied first to accrued and unpaid interest and
thereafter to the outstanding Principal Amount, and shall reduce the total amount owed by the Company on the Maturity Date accordingly.



 


		3.3	Certain Mandatory Prepayments.




 


		(a)	Promptly but in any event within thirty (30) Business Days after the receipt by the Company or any of its Subsidiaries of any
net cash proceeds from any transaction, or series of related transactions, pursuant to which the Company or its Subsidiaries conveys,
sells, leases or subleases, assigns, transfers or otherwise disposes of any part of its or their respective businesses, properties
or assets (whether now owned or hereafter acquired) to any other Person in excess of twenty-five thousand United States Dollars
(US$25,000) in the aggregate during any fiscal year, the Company shall cause one hundred percent (100%) of such net cash proceeds
received during such fiscal year to be applied to prepay the amounts outstanding under this Note.



 



    	4



    	 	



    
 


		(b)	All prepayments under this Section 3.3 shall be accompanied by all accrued and unpaid interest on the amounts being prepaid.
Notwithstanding anything to the contrary contained in this Section 3.3, any conveyance, sale, lease or sublease, assignment, transfer
or other disposition of assets of the Company in the ordinary course of business shall not require the Company to prepay any amounts
outstanding under this Note.




		3.4	Manner of Payment. Each payment in cash by the Company on account of all or any portion of the Principal Amount or accrued interest hereunder and any other amount owed to the Holder under this Note shall be made not later than 1:00 p.m. (New York time) on the date specified for payment under this Note to the Holder at its office located at the address for notices as provided in Section 11.1 below, by wire transfer to an account designated by the Holder in writing or as otherwise directed by the Holder, in lawful money of the United States of America in immediately available funds. Any payment received by the Holder after 1:00 p.m. (New York time) shall be deemed received on the next Business Day. Receipt by the Holder at or prior to 1:00 p.m. (New York time) on any Business Day shall be deemed to constitute receipt by the Holder on such Business Day.





Section
4
GRANT OF SECURITY


	4.1	Grant of Security. The Company hereby grants to the Holder a security interest,
as that term is defined in the Uniform Commercial Code of Delaware (the “UCC”),
in the Collateral (as hereinafter defined), as security for the payment and performance of all the obligations of the Company under
and in connection with this Note now or hereafter existing, whether for the Principal Amount, interest, fees, expenses or otherwise
(all such obligations of the Company, the “Secured Obligations”).
The Company, as security for the Secured Obligations, hereby assigns, pledges, transfers and sets over unto the Holder and its
successors and assigns, and hereby grants to the Holder a continuing security interest in, all of the Company’s right, title
and interest in and to all of the Company’s now existing or hereafter acquired tangible and intangible properties, including,
without limitation, a first lien on all present and future assets of the Company and its subsidiaries (such properties and assets,
the “Collateral”).
	 	 	 



		4.2	UCC Filings. This Note secures the payment and performance of all of the Secured
Obligations, and by its execution hereof, the Company authorizes the Holder to file any and all documents necessary or advisable
to properly perfect a security interest in the Collateral, including, but not limited to, the filing of such UCC-1 Financing Statements
with the Secretaries of State in any and all jurisdictions deemed advisable by the Holder. Upon the payment in full of the Secured
Obligations to the satisfaction of the Holder in its sole discretion, the security interest granted hereby shall terminate, all
rights in and to the Collateral shall revert to the Company and the Holder shall duly file, at the expense of the Company, such
UCC-3 Amendments necessary to terminate the Holder’s security interest hereunder. 





 



    	5



    	 	



    
 


		4.3	Preservation of Security Interest. The Company hereby represents and warrants
to the Holder that no other security interests have been granted (other than those that have fully terminated) and no other Liens
exist on the Collateral other than the security interest granted hereby to the Holder, and upon the filing of a financing statement
with the Secretary of State of Delaware that describes the Collateral, the Holder will have a first priority security interest
in all such Collateral that may be perfected by filing a financing statement under the Delaware UCC. The Company hereby agrees:
(a) it shall diligently preserve and protect the Holder’s security interest in the Collateral; (b) the Holder’s security
interest shall remain a first priority lien on the Collateral for so long as any Secured Obligations shall remain outstanding;
and (c) the Company shall not grant any security interest in the Collateral to any other person prior to the repayment in full
in cash of this Note.
	 	 	 



		4.4	Remedies on Default. If any Event of Default shall occur and be continuing,
the Holder may, in its sole discretion, (i) to the full extent permitted by Law take possession and control of all or any part
of the Collateral and any proceeds thereof and the books and records pertaining thereto, with or without judicial process, and
(ii) without demand or notice (and if notice is required by Law, after five (5) Business Days’ prior written notice), proceed
to exercise one or more of the rights and remedies accorded to a secured party by the UCC and otherwise by Law or by the terms
hereof. The Holder’s rights and remedies shall include, without limitation, the power to sell all or any portion of the Collateral
at public or private sale at such place and time and on such terms as Holder may see fit (subject to the requirements of applicable
Law). Without precluding any other methods of sale, the sale of Collateral shall be deemed to have been made in a commercially
reasonable manner if conducted in conformity with reasonable commercial practices of secured parties disposing of similar property,
but in any event, the Holder may sell the Collateral on such terms as the Holder may choose without assuming any credit risk and
without any obligation to advertise or give notice of any kind not expressly required under this Note, by the UCC or otherwise.
All of the rights and remedies of the Holder under this Note shall be cumulative and not exclusive of other rights and remedies
which it otherwise would have, whether under the UCC or otherwise. The Holder shall not be under any obligation to marshal any
assets in favor of Company or any other person or against or in payment of this Note.




Section
5
CONDITIONS PRECEDENT TO DRAWS


The obligation of the
Holder to honor any request for a draw is subject to the following conditions precedent:





		5.1	Representations and Warranties of the Company. The representations and warranties
of the Company set forth in Section 6 shall be true and correct in all respects on and as of the date of such draw (except to the
extent such representations and warranties specifically relate to an earlier date, in which case such representations and warranties
shall be true and correct as of such earlier date);



 



    	6



    	 	



    

 


	 	 	 



		5.2	Tender Offer Conditions. Each of the Tender Offer Conditions shall be satisfied
as of the date of such draw, other than (a) the Minimum Tender Condition, and (b) delivery of the certificate contemplated by clause
(iv) of Annex B of the Merger Agreement;
	 	 	 



		5.3	Performance of Obligations of the Company. The Company shall have performed
in all material respects all obligations required to be performed by it under this Note on or prior to the date of such draw; 
	 	 	 



		5.4	Event of Default. No Event of Default or default that with the passage of time
would constitute an Event of Default shall exist, or would result from such proposed draw or from the application of the proceeds
therefrom; and
	 	 	 



	 	5.5	Certificate. The Holder shall have received a certificate signed by an officer
of the Company in the form attached hereto as Annex A.



Section
6
REPRESENTATIONS AND WARRANTIES


In order to induce the Holder to enter into
this Note, the Company hereby represents and warrants to the Holder that:







		6.1	Organization, Qualifications. The Company is a Delaware
                                                           corporation, duly organized, validly existing and in good standing
                                                           under the Laws of the State of Delaware and has all requisite corporate
                                                           or similar power and authority to own, lease and operate its properties
                                                           and assets and to carry on its business as presently conducted and
                                                           is qualified to do business and is in good standing as a foreign corporation
                                                           or other legal entity in each jurisdiction where the ownership, leasing
                                                           or operation of its assets or properties or conduct of its business
                                                           requires such qualification, except where the failure to be so organized,
                                                           qualified or in good standing, or to have such power or authority individually
                                                           or in the aggregate, would reasonably be expected to have a Material
                                                           Adverse Effect.



 



		6.2	Corporate Authority; Approval; Validity.
The Company has all requisite corporate power and authority and has taken all corporate action necessary in order to execute,
deliver and perform its obligations under this Note. This Note has been duly executed and delivered by the Company and constitutes
a valid and binding agreements of the Company enforceable against the Company in accordance with their respective terms, subject
to the Bankruptcy and Equity Exception. 
	 	 	 
	 	6.3	Governmental Filings; No Violations. No notices, reports or other filings are required
                           to be made by the Company with, nor are any consents, registrations, approvals, permits or authorizations
                           required to be obtained by the Company from, any Governmental Entity, in connection with the execution,
                           delivery and performance of this Note by the Company and the consummation of the transactions contemplated
                           hereby other than filings made with the U.S. Securities and Exchange Commission. The execution, delivery
                           and performance of this Note by the Company does not, and the consummation of the transactions contemplated
                           hereby will not, constitute or result in (a) a breach or violation of, or a default under, the certificate
                           of incorporation or by-laws of the Company, (b) with or without notice, lapse of time or both, a breach
                           or violation of, a termination (or right of termination) or a default under, the creation or acceleration
                           of any obligations under or the creation of a Lien on any of the assets of the Company pursuant to
                           any Contract binding on the Company or under any Law to which the Company is subject, (c) the loss
                           or impairment of, payment of any additional amounts with respect to, or the consent of any other Person
                           being required in respect of, the Company’s right to own or use any Intellectual Property, or
                           (d) any change in the rights or obligations of any party under any Contract binding on the Company.






			






		







    	7



    	 	



    

Section
7
Covenants


		7.1	Affirmative Covenants. The Company covenants
                                                               to the Holder that, from the date hereof until all amounts owing
                                                               hereunder have been paid in full, the Company shall (and shall,
                                                               except in the cases of clause (a) and (b), cause its Subsidiaries
                                                               to):
	 	 	 






		(a)	punctually pay the Principal Amount and/or any interest payable on this Note, and any other amount due and payable under this
Note in the manner specified in this Note;
	 	 	 



		(b)	give written notice promptly to the Holder of: (i)  any condition or event that constitutes an Event of Default, (ii) 
any written notice from any Person to the Company or any of its Subsidiaries with respect to any claimed default or event of default
under any Contract, (iii)  any material litigation filed or threatened against the Company or any of its Subsidiaries, (iv) 
any notice of material default given by any counterparty to the Company or any of its Subsidiaries under any contract such counterparty
has with the Company or any of its Subsidiaries, or (v)  the occurrence of any event that has had or would reasonably be expected
to have, individually or in the aggregate, a Material Adverse Effect, in each case which notice includes a certificate specifying
the nature and period of existence of such condition or event, or specifying the notice given or action taken by any such Person
and the nature of such claimed default or event of default, event or condition, and what action the Company or its applicable Subsidiary
has taken, is taking and proposes to take with respect thereto;
	 	 	 



		(c)	preserve and maintain its and its Subsidiaries’ legal status, rights, franchises and privileges in the jurisdiction of
its and their respective organization and qualify and remain qualified as a foreign corporation or other entity, as applicable,
in each jurisdiction in which such qualification is necessary or desirable in view of its and their respective businesses and operations
or the ownership or lease of its and their respective properties, except in each case where the failure to maintain such existence,
rights, franchises, privilege or qualification would not, individually or in the aggregate, reasonably be expected to have a Material
Adverse Effect;
	 	 	 



		(d)	comply in all material respects with the requirements of all (i) applicable Laws and (ii) contractual obligations of the Company
and its Subsidiaries, except where the failure to comply would not, individually or in the aggregate, reasonably be expected to
have a Material Adverse Effect;



 



    	8



    	 	



    
 


	 	 	 



		(e)	execute and deliver, or cause to be executed and delivered, upon the request of the Holder and at the Company’s expense,
such additional documents, instruments and agreements as the Holder may determine to be reasonably necessary to carry out the provisions
of this Note and the transactions and actions contemplated hereunder;
	 	 	 



		(f)	maintain proper books of record and account, in which entries that are full, true and correct in all respects and are in conformity
with applicable accounting principles consistently applied shall be made of all material financial transactions and matters involving
the assets and business of the Company and its Subsidiaries; and
	 	 	 



		(g)	use the proceeds of each draw solely for general corporate purposes.
	 	 	 



		7.2	Negative Covenants. Without limiting any other provision
                                                           of this Note, the Company shall not, and shall not permit any of its
                                                           Subsidiaries to, do or take any action on or following the date hereof
                                                           with respect to any of the following:






		(a)	issue notes or otherwise incur any Indebtedness for borrowed money after the date hereof without the prior written consent
of the Holder other than any Indebtedness the proceeds of which are used to prepay this Note in whole or in part;
	 	 	 



		(b)	create, incur, assume or permit to exist, directly or indirectly, any (i) Lien securing Indebtedness for borrowed money except
Permitted Liens and (ii) Liens securing obligations other than Indebtedness for borrowed money;
	 	 	 



		(c)	cease to conduct or carry on the business of the Company or its Subsidiaries substantially as conducted on the date hereof
or as proposed to be conducted or materially change any part of its business activities or take any action that would result in
a Material Adverse Effect;
	 	 	 



		(d)	effect the sale, transfer or license, in a single transaction or a series of transactions, of any material assets;
	 	 	 



		(e)	avoid or seek to avoid the observance or performance of any of the terms of this Note through any reorganization, recapitalization,
transfer of assets or other voluntary action;
	 	 	 



		(f)	(i) liquidate or dissolve, consolidate with, or merge into or with, any other corporation (provided that this clause
(i) shall not prohibit a merger or consolidation involving only the Company and one or more of its Subsidiaries pursuant to which
the Company is the surviving party); or (ii) purchase or otherwise acquire all or substantially all of the capital stock or assets
of any Person (or of any division or business unit thereof); or



 



    	9



    	 	



    
 





		(g)	declare or make, directly or indirectly, any dividend or other distribution (whether in cash, securities or other property)
with respect to any equity interest in the Company or any of its Subsidiaries, or any payment (whether in cash, securities, or
other property), including any sinking fund or similar deposit, on account of the purchase, redemption, retirement, defeasance,
acquisition, cancellation or termination of such equity interest, or on account of any return of capital to the holders of equity
interests of the Company or its Subsidiaries, in each case without the prior written consent of the Holder.



Section
8
events of default


		8.1 	Events of Default. The occurrence of any one or more of
                                                            the following events shall constitute an “Event of Default”:
	 	 	 






		(a)	the Company shall fail to pay any of the Principal Amount of or accrued interest under this Note when due in accordance with
the terms hereof;
	 	 	 



		(b)	the Company shall fail to pay any amount (other than the Principal Amount or accrued interest) that is payable hereunder, when
due in accordance with the terms hereof and such failure of payment has continued for thirty (30) days after being notified of
such failure by the Holder;
	 	 	 



		(c)	any representation, warranty, certification or statement made by or on behalf of the Company in this Note shall have been incorrect,
misleading or false when made and such inaccuracy has continued for five (5) Business Days after the earlier of (i) the date on
which the Company becomes aware of such inaccuracy and (ii) the date on which the Company has been notified of such inaccuracy
in writing by the Holder;
	 	 	 



		(d)	the Company shall default in the due observance or performance of any covenant, condition, agreement or provision contained
in this Note and (other than with respect to the covenants made in Section 7.2 for which no cure period shall apply) such breach
has continued for five (5) Business Days after the earlier of (i) the date on which the Company becomes aware of such inaccuracy
and (ii) the date on which the Company has been notified of such inaccuracy in writing by the Holder;
	 	 	 



		(e)	any Person or group of Persons other than the Holder or its Subsidiaries shall have acquired a majority of the issued and outstanding
Shares or otherwise shall have acquired a majority of the voting power of the Company;



 



    	10



    	 	



    
 


	 	 	 



		(f)	(1) the Company or any of its Subsidiaries shall commence any
case, proceeding or other action (a) under any Law relating to bankruptcy,
insolvency, reorganization or relief of debtors, seeking to have an order for relief entered with respect to it, or seeking to
adjudicate it bankrupt or insolvent, or seeking reorganization, arrangement, adjustment, winding-up, liquidation, dissolution,
composition or other relief with respect to it or its debts, or (b) seeking appointment of a receiver, trustee, custodian, conservator
or other similar official for it or for all or any substantial part of its assets; or (2)
there shall be commenced against the Company or any of its Subsidiaries any case, proceeding, petition or other action of a nature
referred to in clause (1) above that (a) results in the entry of an order for
relief or any such adjudication or appointment or (b) remains undismissed or
unstayed for a period of seven (7) days; or (3) there shall be commenced against
the Company or any of its Subsidiaries any case, proceeding, petition or other action seeking issuance of a warrant of attachment,
execution, distraint or similar process against all or any substantial part of its assets, or seeking appointment of a custodian,
receiver, liquidator, assignee, trustee, sequestrator or other similar official of the Company or any substantial part of its assets,
in each case that results in the entry of an order for any such relief or appointment that shall not have been vacated, discharged
or stayed within sixty (60) days after the entry thereof; (4) the Company or
any of its Subsidiaries shall (a) make a general assignment for the benefit
of its creditors, or (b) shall admit its inability to pay its debts when they
become due; (5) there shall be any order, judgment or decree entered against the Company or any of its Subsidiaries decreeing the
dissolution or split up of the Company or any of its Subsidiaries and such order shall remain undismissed or unstayed for a period
in excess of sixty (60) days; or (6) the Company or any of its Subsidiaries shall cease to carry on all or any substantial part
of its business in the ordinary course;
	 	 	 






		(g)	the Company or any of its Subsidiaries forfeits or is otherwise deprived of any permits, easements, consents or licenses required
to carry on any material portion of its business, or the Company or any of its Subsidiaries files for, or an event occurs, which
can reasonably be expected to result in the Company’s or any of its Subsidiaries’ dissolution or termination;
	 	 	 



		(h)	there is entered against the Company or its Subsidiaries a final judgment or order for the payment of money in an aggregate
amount exceeding $1,000,000 and such judgment or order shall remain unsatisfied or without a stay in respect thereof for a period
of sixty (60) days;
	 	 	 



		(i)	the Company or any of its Subsidiaries shall fail to pay when due any obligation, whether direct or contingent, for Indebtedness,
or shall breach or default with respect to any term of any loan agreement, mortgage, indenture or other agreement pursuant to which
such obligation was created or securing such obligation if the effect of such breach or default is to cause, or to permit the holder
or holders of that Indebtedness (or a trustee on behalf of such holder or holders), to cause that Indebtedness to become or be
declared due and payable (or redeemable) prior to its stated maturing or the stated maturity of any underlying obligation, as the
case may be; or
	 	 	 



		(j)	any other event occurs that has had or would reasonably be expected to have a Material Adverse Effect.



 


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		8.2	Notice by the Company. Upon the occurrence of an Event of Default, the
Company shall give the Holder prompt notice in writing of the occurrence of such Event of Default.
	 	 	 
		8.3	Consequence of Event of Default. Upon the occurrence and during the continuance of an Event
                     of Default, (i) upon notice pursuant to Section 2.1(a), the outstanding balance of the Principal Amount shall
                     bear interest at the Default Rate from the date of such Event of Default and (ii) the Holder may, by notice
                     in writing to the Company, declare the then outstanding Principal Amount of this Note, together with any
                     accrued and unpaid interest due hereunder, to be forthwith due and payable and all such amounts shall be
                     immediately due and payable.






			





SECTION
9

REGISTRATION AND TRANSFER OF NOTE





	9.1	Register.  The Company shall keep at its principal office
    a register in which the Company shall provide for the registration of this Note and record the name and address of the Holder. 
    The Holder shall notify the Company of any change of name or address and promptly after receiving such notification the Company
    shall record such information in such register.
	 	 
	9.2	Transfer. This Note and all rights hereunder may not be assigned, pledged, encumbered
    or otherwise transferred by the Holder under any circumstances unless the Company has consented in writing to such assignment,
    pledge, encumbrance or transfer.



SECTION 10

GOVERNING LAW; JURISDICTION


		10.1	GOVERNING LAW AND JURISDICTION.



 





		(a)	Governing Law. This Note (including any claim or controversy arising out of or relating to this Note) shall be construed
and governed by and in accordance with the Laws of the State of Delaware without regard to conflict of Law principles thereof to
the extent that such principles would direct a matter to another jurisdiction.
	 	 	 



		(b)	Consent to Jurisdiction and Service. Each of the Company and the Holder hereby irrevocably submits to the personal jurisdiction
of the courts of the State of Delaware and the Federal courts of the United States of America located in the State of Delaware
solely in respect of the interpretation and enforcement of the provisions of this Note, and in respect of the transactions contemplated
hereby, and hereby waives, and agrees not to assert, as a defense in any action, suit or proceeding for the interpretation or enforcement
hereof or of any such document, that it is not subject thereto or that such action, suit or proceeding may not be brought or is
not maintainable in said courts or that the venue thereof may not be appropriate or that this Note may not be enforced in or by
such courts, and each of the Company and the Holder irrevocably agrees that all claims relating to such action, proceeding, or
transactions shall be heard and determined in such a Delaware State or Federal court. Each of the Company and the Holder hereby
consents to and grants any such court jurisdiction over the person of such parties and, to the extent permitted by applicable Law,
over the subject matter of such dispute and agree that mailing of process or other papers in connection with any such action or
proceeding in the manner provided in Section 11.1 or in such other manner as may be permitted by Law shall be valid and sufficient
service thereof.



 



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Section
11

Miscellaneous







		11.1	Notices. Any notice, request, instruction or other document
to be given hereunder by any party to the others shall be in writing and delivered personally or sent by registered or certified
mail, postage prepaid, by facsimile or overnight courier:






	 	(a)	if to the Company, to:
	 	 	 
	 	 	 	Viking Systems, Inc.
	 	 	 	134 Flanders Road
	 	 	 	Westborough, MA  01581
	 	 	 	Attention: Robert Mathews, Chief Financial Officer
	 	 	 	Fax: (508) 366-8858
	 	 	 	 
	 	 	 	with a copy (which shall not constitute notice) to:
	 	 	 	 
	 	 	 	Trombly Business Law, PC
	 	 	 	1320 Centre Street, Suite 202
	 	 	 	Newton, MA  02459
	 	 	 	Attention: Amy Trombly, Esq.
	 	 	 	Fax: (617) 663-6164
	 	 	 	 
	 	(b)	if to the Holder, to:
	 	 	 
	 	 	 	CONMED Corporation
	 	 	 	525 French Road
	 	 	 	Utica, New York 13502
	 	 	 	Attention: General Counsel
	 	 		Fax: (315) 793-8929
	 	 	 	 
	 	 	 	with a copy (which shall not constitute notice) to:
	 	 	 	 
	 	 	 	Sullivan & Cromwell LLP,
	 	 	 	125 Broad Street
	 	 	 	New York, NY  10004






	 	 	 	Attention:	Bob Downes
	 	 	 	 	Melissa Sawyer
	 	 	 	Fax:  (212) 558-3588





or to such other persons or addresses as may be designated
in writing by the party to receive such notice as provided above. Any notice, request,
instruction or other document given as provided above shall be deemed given to the receiving party upon actual receipt, if delivered
personally; three (3) Business Days after deposit in the mail, if sent by registered
or certified mail; upon confirmation of successful transmission if sent by facsimile (provided that if given by facsimile such
notice, request, instruction or other document shall be followed up within one (1) Business Day
by dispatch pursuant to one of the other methods described herein); or on the next Business Day
after deposit with an overnight courier, if sent by an overnight courier.


 






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		11.2	Amendments;Waivers. This Note may not
                                                          be amended or modified, and no provisions hereof may be waived, without
                                                          the written consent of the Company and the Holder. Except as expressly
                                                          agreed in writing by the Holder, no extension of time for payment of
                                                          this Note, or any installment hereof, and no alternation, amendment
                                                          or waiver of any provision of this Note shall release, discharge, modify,
                                                          change or affect the liability of the Company under this Note.





		11.3	Expenses. All of the Holder’s costs of enforcing its rights hereunder, including any costs of collection,
administering the Note, addressing any requests for amendments or waivers and any reasonable attorney’s fees in connection
therewith, shall be paid by the Company.






		11.4	Indemnification. The Company agrees to defend, protect, indemnify and hold
harmless the Holder and its Subsidiaries and their officers, directors, trustees, employees, agents and advisors (collectively
called the “Indemnitees”) from and against any and all claims,
losses, demands, settlements, damages, liabilities, obligations, penalties, fines, fees, reasonable costs and expenses (including,
without limitation, reasonable attorneys’ fees, costs and expenses, but excluding income, franchise and similar Taxes of
an Indemnitee) incurred by such Indemnitees, whether prior to or from and after the date hereof, as a result of or arising from
or relating to or in connection with any of the following: (a) the Holder’s furnishing of funds to the Company under this
Note, (b) any matter relating to the financing transactions contemplated by this Note, (c) any claim, litigation, investigation
or administrative or judicial proceeding in connection with any transaction contemplated in, or consummated under, the Note or
(d) any claim, litigation, investigation or proceeding relating to any of the foregoing, whether or not any Indemnitee is a party
thereto (collectively, the “Indemnified Matters”); provided,
however, that the Company shall not have any obligation to any Indemnitee
under this Section 11.4 for any Indemnified Matter to the extent resulting from the bad faith, gross negligence or willful
misconduct of such Indemnitee. Such indemnification for all of the foregoing losses, damages, fees, costs and expenses of the Indemnitees
shall be due and payable promptly after demand therefor. To the extent that the undertaking to indemnify, pay and hold harmless
set forth in this Section 11.4 may be unenforceable because it is violative of any Law or public policy, the Company shall contribute
the maximum portion that it is permitted to pay and satisfy under applicable Law, to the payment and satisfaction of all Indemnified
Matters incurred by the Indemnitees. This Indemnity shall survive the repayment of this Note.







		11.5	Waiver.
                                                                                                          The Company hereby
                                                                                                          waives diligence, presentment,
                                                                                                          protest and demand,
                                                                                                          notice of protest, notice
                                                                                                          of dishonor, notice
                                                                                                          of nonpayment and any
                                                                                                          and all other notices
                                                                                                          and demands in connection
                                                                                                          with the delivery, acceptance,
                                                                                                          performance, default
                                                                                                          or enforcement of this
                                                                                                          Note. The Company further
                                                                                                          waives, to the full
                                                                                                          extent permitted by
                                                                                                          Law, the right to plead
                                                                                                          any and all statutes
                                                                                                          of limitations as a
                                                                                                          defense to any demand
                                                                                                          on this Note.





 



    	14



    	 	



    
 


		11.6	Entire
                                                                                                          Agreement. This
                                                                                                          Note and the Merger
                                                                                                          Agreement constitute
                                                                                                          the entire agreement
                                                                                                          of the Company and the
                                                                                                          Holder with respect
                                                                                                          to the subject matter
                                                                                                          hereof and supersedes
                                                                                                          all prior agreements
                                                                                                          and understandings,
                                                                                                          both oral and written,
                                                                                                          between the Company
                                                                                                          and the Holder with
                                                                                                          respect to the subject
                                                                                                          matter hereof.






		11.7	Counterparts.  This Note may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together
shall constitute one and the same instrument.






		11.8	Severability. If any provision
                                                                                                          of this Note shall be
                                                                                                          declared void or unenforceable
                                                                                                          by any judicial or administrative
                                                                                                          authority, the validity
                                                                                                          of any other provision
                                                                                                          and of the entire Note
                                                                                                          shall not be affected
                                                                                                          thereby.




[Signature
page follows]



    	



    	 	



    

 


IN WITNESS WHEREOF, the undersigned has
caused this Note to be executed by its officer or director thereunto duly authorized, on the date first above written.




 


	 	Viking Systems, Inc.
	 	 
	 	 
	 	By:	/s/ John Kennedy
	 	 	Name:	John “Jed” Kennedy
	 	 	Title:	President and Chief Executive Officer




AGREED AND ACCEPTED:



CONMED Corporation




	
	By:	/s/ Daniel S. Jonas	 
	 	Name:	Daniel S. Jonas	 
	 	Title:	Vice President-Legal Affairs, General Counsel



 


[Signature Page to Promissory Note]








    	



    	 	



    

 


Annex A


 


Form of Officer’s Certificate


 


Certificate
of VIKING SYSTEMS, INC.


 


This Certificate is delivered in connection
with that certain Promissory Note, dated August 13, 2012 (as amended, the “Note”), delivered by Viking Systems,
Inc., a Delaware corporation, to CONMED Corporation, a New York corporation. All capitalized terms used herein and not otherwise
expressly defined herein shall have the respective meanings given such terms in the Note.


 


The undersigned, [insert name
of officer], on behalf of the Company, in his capacity as an officer of the Company and not in his personal capacity, does
hereby certify that:


 


(a)the representations
and warranties of the Company set forth in Section 6 of the Note are true and correct in all respects on and as of the date hereof
(except to the extent such representations and warranties specifically relate to an earlier date, in which case such representations
and warranties shall be true and correct as of such earlier date);


 


(b)as of the
date hereof, each of the Tender Offer Conditions is satisfied, other than (x) the Minimum Tender Condition, and (y) delivery of
the certificate contemplated by clause (iv) of Annex B of the Merger Agreement;


 


(c)the Company
has performed in all material respects all obligations required to be performed by it under the Note on or prior to the date hereof;
and


 


(f)no Event of Default or default
that with the passage of time would constitute an Event of Default exists, or would result from the proposed draw or from the application
of the proceeds therefrom.


 


IN WITNESS WHEREOF, I have hereunto
set my hand as of the _____ day of [insert date of proposed draw].


 


By:                                           

Name:

Title: