Document:

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                                                                     EXHIBIT 4.4

                                MICROHELIX, INC.

                                PURCHASE WARRANT

                                   Issued to:

                        PAULSON INVESTMENT COMPANY, INC.

                             Exercisable to Purchase

                                  150,000 UNITS

                      THIS WARRANT HAS NOT BEEN REGISTERED
                        UNDER THE SECURITIES ACT OF 1933
                             AND IS NOT TRANSFERABLE
                            EXCEPT AS PROVIDED HEREIN

                            Void after _______, 2006

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                This is to certify that, for value received and subject to the
terms and conditions set forth below, the Warrantholder (hereinafter defined) is
entitled to purchase, and the Company promises and agrees to sell and issue to
the Warrantholder, at any time on or after __________, 2002 and on or
before_________ , 2006, up to 150,000 Units (hereinafter defined) at the
Exercise Price (hereinafter defined).

                This Warrant Certificate is issued subject to the following
terms and conditions:

        1. Definitions of Certain Terms. Except as may be otherwise clearly
required by the context, the following terms have the following meanings:

                (a) "Act" means the Securities Act of 1933, as amended.

                (b) "Closing Date" means the date on which the Offering is
closed.

                (c) "Commission" means the Securities and Exchange Commission.

                (d) "Common Stock" means the common stock, no par value, of the
Company.

                (e) "Company" means microHelix, Inc., an Oregon corporation.

                (f) "Company's Expenses" means any and all expenses payable by
the Company or the Warrantholder in connection with an offering described in
Section 6 hereof, except Warrantholder's Expenses.

                (g) "Effective Date" means the date on which the Registration
Statement is declared effective by the Commission.

                (h) "Exercise Price" means the price at which the Warrantholder
may purchase one complete Unit (or Securities obtainable in lieu of one complete
Unit) upon exercise of Warrants as determined from time to time pursuant to the
provisions hereof. The initial Exercise Price is $ ________ per Unit (120% of
the initial public offering price of a Unit). If a Warrant is exercised for a
component of a Unit or Units, then the price payable in connection with such
exercise shall be determined by allocating $0.001 to the Unit Warrant and the
balance of the Exercise Price to the share of Common Stock, or, in each case, to
any securities obtainable in addition to or in lieu of such Unit Warrant or
share of Common Stock by virtue of the application of Section 3 of this Warrant.

                (i) "Offering" means the public offering of Units made pursuant
to the Registration Statement.

                (j) "Registration Statement" means the Company's registration
statement (File No. 333-_________), as amended on the Closing Date.

                (k) "Rules and Regulations" means the rules and regulations of
the Commission adopted under the Act.

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                (l) "Securities" means the securities obtained or obtainable
upon exercise of the Warrant or securities obtained or obtainable upon exercise,
exchange or conversion of such securities.

                (m) "Unit" means, as the case may require, either one of the
Units offered to the public pursuant to the Registration Statement or one of the
Units obtainable on exercise of a Warrant, each Unit consisting of one share of
Common Stock and one Unit Warrant, each Unit Warrant to purchase one share of
Common Stock on the terms and conditions described in the Registration
Statement.

                (n) "Unit Warrant" means a Common Stock purchase warrant
included as a component of a Unit.

                (o) "Warrant Certificate" means a certificate evidencing the
Warrant.

                (p) "Warrantholder" means a record holder of the Warrant or
Securities. The initial Warrantholder is Paulson Investment Company, Inc.

                (q) "Warrantholder's Expenses" means the sum of (i) the
aggregate amount of cash payments made to an underwriter, underwriting
syndicate, or agent in connection with an offering described in Section 6 hereof
multiplied by a fraction, the numerator of which is the aggregate sales price of
the Securities sold by such underwriter, underwriting syndicate, or agent in
such offering on behalf of the Warrantholder and the denominator of which is the
aggregate sales price of all of the securities sold by such underwriter,
underwriting syndicate, or agent in such offering and (ii) all out-of-pocket
expenses of the Warrantholder, except for the fees and disbursements of one firm
retained as legal counsel for the Warrantholder that will be paid by the
Company.

                (r) "Warrant" means the warrant evidenced by this certificate,
any similar certificate issued in connection with the Offering, or any
certificate obtained upon transfer or partial exercise of the Warrant evidenced
by any such certificate.

        2. Exercise of Warrants. All or any part of the Warrant may be exercised
commencing on the first anniversary of the Effective Date and ending at 5:00
p.m. (Pacific Time) on the fifth anniversary of the Effective Date by
surrendering this Warrant Certificate, together with appropriate instructions,
duly executed by the Warrantholder or by its duly authorized attorney, at the
office of the Company, 16125 SW 72nd Avenue, Portland, Oregon 97224, or at such
other office or agency as the Company may designate. Upon receipt of notice of
exercise, the Company shall immediately instruct its transfer agent to prepare
certificates for the Securities to be received by the Warrantholder upon
completion of the Warrant exercise. When such certificates are prepared, the
Company shall notify the Warrantholder and deliver such certificates to the
Warrantholder or as per the Warrantholder's instructions immediately upon
payment in full by the Warrantholder, in lawful money of the United States, of
the Exercise Price payable with respect to the Securities being purchased. If
the Warrantholder shall represent and warrant that all applicable registration
and prospectus delivery requirements for their sale have been complied with upon
sale of the securities received upon exercise of the Warrant, such certificates
shall not bear a legend with respect to the Act.

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        If fewer than all the Securities purchasable under the Warrant are
purchased, the Company will, upon such partial exercise, execute and deliver to
the Warrantholder a new Warrant Certificate (dated the date hereof), in form and
tenor similar to this Warrant Certificate, evidencing that portion of the
Warrant not exercised. The Securities to be obtained on exercise of the Warrant
will be deemed to have been issued, and any person exercising the Warrants will
be deemed to have become a holder of record of those Securities, as of the date
of the payment of the Exercise Price.

        3. Adjustments in Certain Events. The number, class, and price of
Securities for which this Warrant Certificate may be exercised are subject to
adjustment from time to time upon the happening of certain events as follows:

                (a) If the outstanding shares of the Company's Common Stock are
divided into a greater number of shares or a dividend in stock is paid on the
Common Stock, the number of shares of Common Stock for which the Warrant is then
exercisable will be proportionately increased and the Exercise Price will be
proportionately reduced; and, conversely, if the outstanding shares of Common
Stock are combined into a smaller number of shares of Common Stock, the number
of shares of Common Stock for which the Warrant is then exercisable will be
proportionately reduced and the Exercise Price will be proportionately
increased. The increases and reductions provided for in this subsection 3(a)
will be made with the intent and, as nearly as practicable, the effect that
neither the percentage of the total equity of the Company obtainable on exercise
of the Warrants nor the price payable for such percentage upon such exercise
will be affected by any event described in this subsection 3(a).

                (b) In case of any change in the Common Stock through merger,
consolidation, reclassification, reorganization, partial or complete
liquidation, purchase of substantially all the assets of the Company, or other
change in the capital structure of the Company, then, as a condition of such
change, lawful and adequate provision will be made so that the holder of this
Warrant Certificate will have the right thereafter to receive upon the exercise
of the Warrant the kind and amount of shares of stock or other securities or
property to which he would have been entitled if, immediately prior to such
event, he had held the number of shares of Common Stock obtainable upon the
exercise of the Warrant. In any such case, appropriate adjustment will be made
in the application of the provisions set forth herein with respect to the rights
and interest thereafter of the Warrantholder, to the end that the provisions set
forth herein will thereafter be applicable, as nearly as reasonably may be, in
relation to any shares of stock or other property thereafter deliverable upon
the exercise of the Warrant. The Company will not permit any change in its
capital structure to occur unless the issuer of the shares of stock or other
securities to be received by the holder of this Warrant Certificate, if not the
Company, agrees to be bound by and comply with the provisions of this Warrant
Certificate.

                (c) When any adjustment is required to be made in the number of
shares of Common Stock, other securities, or the property purchasable upon
exercise of the Warrant, the Company will promptly determine the new number of
such shares or other securities or property purchasable upon exercise of the
Warrant and (i) prepare and retain on file a statement describing in reasonable
detail the method used in arriving at the new number of such shares or other
securities or property purchasable upon exercise of the Warrant and (ii) cause a
copy of such

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statement to be mailed to the Warrantholder within thirty (30) days after the
date of the event giving rise to the adjustment.

                (d) No fractional shares of Common Stock or other securities
will be issued in connection with the exercise of the Warrant, but the Company
will pay, in lieu of fractional shares, a cash payment therefor on the basis of
the mean between the bid and asked prices of the Common Stock in the
over-the-counter market or the last sale price of the Common Stock on the Nasdaq
SmallCap Market or a national securities exchange on the day immediately prior
to exercise.

                (e) If securities of the Company or securities of any subsidiary
of the Company are distributed pro rata to holders of Common Stock, such number
of securities will be distributed to the Warrantholder or his assignee upon
exercise of his rights hereunder as such Warrantholder or assignee would have
been entitled to if this Warrant Certificate had been exercised prior to the
record date for such distribution. The provisions with respect to adjustment of
the Common Stock provided in this Section 3 will also apply to the securities to
which the Warrantholder or his assignee is entitled under this subsection 3(e).

                (f) Notwithstanding anything herein to the contrary, there will
be no adjustment made hereunder on account of the sale by the Company of the
Common Stock or other Securities purchasable upon exercise of the Warrant.

        4. Reservation of Securities. The Company agrees that the number of
shares of Common Stock, Unit Warrants or other Securities sufficient to provide
for the exercise of the Warrant upon the basis set forth above will at all times
during the term of the Warrant be reserved for issuance upon exercise of the
Warrant.

        5. Validity of Securities. All Securities delivered upon the exercise of
the Warrant will be duly and validly issued in accordance with their terms, and
the Company will pay all documentary and transfer taxes, if any, in respect of
the original issuance thereof upon exercise of the Warrant.

        6. Registration of Securities Issuable on Exercise of Warrant
Certificate.

                (a) The Company will register the Securities with the Commission
pursuant to the Act so as to allow the unrestricted sale of the Securities to
the public from time to time commencing on the first anniversary of the
Effective Date and ending at 5:00 p.m. (Pacific Time) on the fifth anniversary
of the Effective Date (the "Registration Period"). The Company will also file
such applications and other documents necessary to permit the sale of the
Securities to the public during the Registration Period in those states
designated by the Warrantholders among those in which the Units were qualified
for sale in the Offering or in such other states as the Company and the
Warrantholder agree to. In order to comply with the provisions of this Section
6(a), the Company is not required to file more than one registration statement
in addition to the Registration Statement.

                (b) The Company will pay all of the Company's Expenses and each
Warrantholder will pay its pro rata share of the Warrantholder's Expenses
relating to the

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registration, offer and sale of the Securities.

                (c) Except as specifically provided herein, the manner and
conduct of the registration, including the contents of the registration
statement, will be entirely in the control and at the discretion of the Company.
The Company will file such post-effective amendments and supplements as may be
necessary to maintain the currency of the registration statement during the
Registration Period. In addition, if the Warrantholder participating in the
registration is advised by counsel that the registration statement, in their
opinion, is deficient in any material respect, the Company will use its best
efforts to cause the registration statement to be amended to eliminate the
concerns raised.

                (d) The Company will furnish to the Warrantholder the number of
copies of a prospectus, including a preliminary prospectus, in conformity with
the requirements of the Act, and such other documents as it may reasonably
request in order to facilitate the disposition of Securities owned by it.

                (e) The Company will, at the request of Warrantholders holding
at least 50 percent of the then outstanding Warrants, (i) furnish an opinion of
the counsel representing the Company for the purposes of the registration
pursuant to this Section 6, addressed to the Warrantholders and any
Participating Underwriter, (ii) in the event of an underwritten offering,
furnish an appropriate letter from the independent public accountants of the
Company, addressed to the Warrantholders and any Participating Underwriter, and
(iii) make such representations and warranties to the Warrantholders and any
Participating Underwriter as are customarily given to underwriters of public
offerings of equity securities in connection with such offerings. A request
pursuant to this subsection (e) may be made on three occasions. The documents
required to be delivered pursuant to this subsection (e) will be dated within
ten days of the request and will be, in form and substance, equivalent to
similar documents furnished to the underwriters in connection with the Offering,
with such changes as may be appropriate in light of changed circumstances.

        7. Indemnification in Connection with Registration.

                (a) If any of the Securities are registered, the Company will
indemnify and hold harmless each selling Warrantholder, any person who controls
any selling Warrantholder within the meaning of the Act, and any Participating
Underwriter against any losses, claims, damages, or liabilities, joint or
several, to which any Warrantholder, controlling person, or Participating
Underwriter may be subject under the Act or otherwise; and it will reimburse
each Warrantholder, each controlling person, and each Participating Underwriter
for any legal or other expenses reasonably incurred by the Warrantholder,
controlling person, or Participating Underwriter in connection with
investigating or defending any such loss, claim, damage, liability or action,
insofar as such losses, claims, damages, or liabilities, joint or several (or
actions in respect thereof), arise out of or are based upon any untrue statement
or alleged untrue statement of any material fact contained, on the effective
date thereof, in any such registration statement or any preliminary prospectus
or final prospectus, or any amendment or supplement thereto, or arise out of or
are based upon the omission or alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading; provided, however, that the Company will not be liable in any case
to the extent that any loss, claim, damage, or liability arises

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out of or is based upon any untrue statement or alleged untrue statement or
omission or alleged omission made in any registration statement, preliminary
prospectus, final prospectus, or any amendment or supplement thereto, in
reliance upon and in conformity with written information furnished by a
Warrantholder for use in the preparation thereof. The indemnity agreement
contained in this subsection (a) will not apply to amounts paid to any claimant
in settlement of any suit or claim unless such payment is first approved by the
Company, such approval not to be unreasonably withheld.

                (b) Each selling Warrantholder, as a condition of the Company's
registration obligation, will indemnify and hold harmless the Company, each of
its directors, each of its officers who have signed any registration statement
or other filing, or any amendment or supplement thereto, and any person who
controls the Company within the meaning of the Act, against any losses, claims,
damages, or liabilities to which the Company or any such director, officer, or
controlling person may become subject under the Act or otherwise, and will
reimburse any legal or other expenses reasonably incurred by the Company or any
such director, officer, or controlling person in connection with investigating
or defending any such loss, claim, damage, liability, or action, insofar as such
losses, claims, damages, or liabilities (or actions in respect thereof) arise
out of or are based upon any untrue or alleged untrue statement of any material
fact contained in said registration statement, any preliminary or final
prospectus, or other filing or any amendment or supplement thereto, or arise out
of or are based upon the omission or the alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, but only to the extent that such untrue statement or
alleged untrue statement or omission or alleged omission was made in said
registration statement, preliminary or final prospectus, or other filing, or
amendment or supplement, in reliance upon and in conformity with written
information furnished by such Warrantholder for use in the preparation thereof;
provided, however, that the indemnity agreement contained in this subsection (b)
will not apply to amounts paid to any claimant in settlement of any suit or
claim unless such payment is first approved by the Warrantholder, such approval
not to be unreasonably withheld.

                (c) Promptly after receipt by an indemnified party under
subsection (a) or (b) above of notice of the commencement of any action, such
indemnified party will, if a claim in respect thereof is to be made against an
indemnifying party, notify the indemnifying party of the commencement thereof;
but the omission to notify the indemnifying party will not relieve it from any
liability that it may have to any indemnified party otherwise than under
subsections (a) and (b).

                (d) If any such action is brought against any indemnified party
and it notifies an indemnifying party of the commencement thereof, the
indemnifying party will be entitled to participate in, and, to the extent that
it may wish, jointly with any other indemnifying party similarly notified, to
assume the defense thereof, with counsel satisfactory to such indemnified party;
and after notice from the indemnifying party to such indemnified party of its
election to assume the defense thereof, the indemnifying party will not be
liable to such indemnified party for any legal or other expenses subsequently
incurred by such indemnified party in connection with the defense thereof other
than reasonable costs of investigation.

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        8. Restrictions on Transfer. This Warrant Certificate and the Warrant
may not be sold, transferred, assigned, pledged or hypothecated for a period of
one year following the Effective Date of the Offering, except transfers to
officers or partners (not directors) of the underwriters and members of the
selling group and/or their officers or partners or by will or operation of law.
The Warrant may be divided or combined, upon request to the Company by the
Warrantholder, into a certificate or certificates evidencing the same aggregate
number of Warrants.

        9. No Rights as a Shareholder. Except as otherwise provided herein, the
Warrantholder will not, by virtue of ownership of the Warrant, be entitled to
any rights of a shareholder of the Company but will, upon written request to the
Company, be entitled to receive such quarterly or annual reports as the Company
distributes to its shareholders.

        10. Optional Conversion.

        (a) In addition to and without limiting the right of any Warrantholder
under the terms of this Warrant, the Warrantholder shall have the right (the
"Conversion Right") to convert this Warrant or any portion thereof into
Securities as provided in this Section 10 at any time or from time-to-time after
the first anniversary of the date hereof and prior to its expiration. Upon
exercise of the Conversion Right with respect to a particular number of Units
subject to this Warrant (the "Converted Securities"), the Company shall deliver
to the holder of this Warrant, without payment by the holder of any exercise
price or any cash or other consideration, that number of Units equal to the
quotient obtained by dividing the Net Value (as hereinafter defined) of the
Converted Securities by the sum of the fair market value (as defined in
paragraph (c) below) of one share of Common Stock plus one Unit Warrant,
determined in each case as of the close of business on the Conversion Date (as
hereinafter defined). The "Net Value" of the Converted Securities shall be
determined by subtracting the aggregate Exercise Price of the Converted
Securities from the aggregate fair market value of the Converted Securities.
Notwithstanding anything in this Section 10 to the contrary, the Conversion
Right cannot be exercised with respect to a number of Converted Securities
having a Net Value below $100. No fractional shares shall be issuable upon
exercise of the Conversion Right, and if the number of shares to be issued in
accordance with the foregoing formula is other than a whole number, the Company
shall pay to the holder of this Warrant an amount in cash equal to the fair
market value of the resulting fractional share.

        (b) The Conversion Right may be exercised by the holder of this Warrant
by the surrender of this Warrant at the principal office of the Company together
with a written statement specifying that the holder thereby intends to exercise
the Conversion Right and indicating the number of Securities subject to this
Warrant which are being surrendered (referred to in paragraph (a) above as the
Converted Securities) in exercise of the Conversion Right. Such conversion shall
be effective upon receipt by the Company of this Warrant together with the
aforesaid written statement, or on such later date as is specified therein (the
"Conversion Date"), but not later than the expiration date of this Warrant.
Certificates for the shares of Common Stock and Unit Warrants issuable upon
exercise of the Conversion Right, together with a check in payment of any
fractional share and, in the case of a partial exercise, a new Warrant
evidencing the Securities remaining subject to this Warrant, shall be issued as
of the Conversion Date, and shall be delivered to the holder of this Warrant
within seven days following the Conversion Date.

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        (c) For purposes of this Section 10, the "fair market value" of a share
of Common Stock or Unit Warrant as of a particular date shall be the mean
between the bid and asked price of the Common Stock or Unit Warrant, as the case
may be, as quoted in the over the counter market, or, if applicable, the closing
sale price of the Common Stock or Unit Warrant, as the case may be, on the
Nasdaq Stock Market or a national exchange.

        11. Notice. Any notices required or permitted to be given hereunder will
be in writing and may be served personally or by mail addressed as follows:

               If to the Company:

                      16125 SW 72nd Avenue
                      Portland, Oregon 97224
                      Attn:  President

               If to the Warrantholder:

                      at the address furnished
                      by the Warrantholder to the
                      Company for the purpose of
                      notice.

        Any notice so given by mail will be deemed effectively given 48 hours
after mailing when deposited in the United States mail, registered or certified
mail, return receipt requested, postage prepaid and addressed as specified
above. Any party may by written notice to the other specify a different address
for notice purposes.

                     [Remainder of Page Intentionally Blank]

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        12. Applicable Law. This Warrant Certificate will be governed by and
construed in accordance with the laws of the state of Oregon, without reference
to conflict of laws principles thereunder. All disputes relating to this Warrant
Certificate shall be tried before the courts of Oregon located in Multnomah
County, Oregon, to the exclusion of all other courts that might have
jurisdiction.

Dated as of ______________, 2001.

MICROHELIX, INC.

By:
   -----------------------------------------
   Richard G. Sass
   President

Agreed and Accepted as of____________, 2001:

PAULSON INVESTMENT COMPANY, INC.

By:
   -----------------------------------------

Page 9<PAGE>   1

                                                                    EXHIBIT 10.1

                                 PROMISSORY NOTE

$667,500.00                                         Date of Note:  July 22, 1998

FOR VALUE RECEIVED, MICROHELIX LABS, INC., AN OREGON CORPORATION, AND RICHARD G.
SASS, AND OREGON RESIDENT (Hereinafter "MAKERS") jointly and severally
promise(s) to pay to the order of THE CONFEDERATED TRIBES OF THE GRAND RONDE
COMMUNITY OF OREGON (hereinafter "HOLDER") at 9615 Grand Ronde Road, Grand
Ronde, Oregon or such other place as may be designated by the Holder hereof from
time to time the principal sum of SIX HUNDRED SIXTY SEVEN THOUSAND FIVE HUNDRED
AND NO/100 DOLLARS ($667,500.00) with interest thereon from the date of closing,
on the terms and conditions set forth herein.

1. INTEREST RATE: The rate of interest on the unpaid balance of this Note shall
be FIFTEEN PERCENT (15.0%) accrued on a monthly basis. All interest will be
calculated based on a 360 day year and applied to the actual number of days
elapsed.

2. PAYMENTS: Maker(s) shall pay quarterly interest payments in the amount of
TWENTY TWO THOUSAND FIVE HUNDRED AND 00/100 DOLLARS ($22,500.00) on or before
the 22nd day of October, 1998 and shall pay interest payments on or before the
same day of each succeeding calendar quarter until the 22nd day of July, 1999
when remaining principal balance of this Note, together with all accrued
interest shall be paid in full. Maker(s) shall pay a late charge equal to ten
percent (10%) of the amount of any payment which is not received by the holder
within ten (10) days after its due date.

3. ALLOCATION OF PAYMENTS: All sums paid by Maker(s) shall be applied first to
the payment of any costs or expenses due Holder, any late charges then due, then
to any interest then due, and finally to payment of principal.

4. PREPAYMENT: No prepayment shall be allowed.

5. DEFAULT: In the event any scheduled payment of principal or interest due
hereunder is not paid and received by the Holder of the Note within ten (10)
days of its due date, or any breach of any of the terms of this Note, or UCC-1
securing this Note, this Note shall be in Default. In the event of Default, of
any of the terms or conditions of this Note, then the rate of interest on the
entire unpaid balance of this Note shall be increased to Eighteen Percent (18%)
("Default Rate") per annum until the unpaid payment due, together with any other
charges due pursuant to the terms and conditions of this Note are paid in full.
All past due installments of interest, late charges, default rate interest,
attorneys fees, advisor's fees and expenses incurred by Holder in connection
with the default shall be added to the principal balance, and said principal
balance shall bear interest at the Default Rate as provided above.

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6. ACCELERATION: At the sole option of the Holder hereof, the Holder may declare
the outstanding principal balance and interest due or then accrued on the
happening of any of the following events:

        a. A default in any payment due under this Promissory Note or a default
in any agreement, condition, covenant, obligation, representation or warranty in
any loan document, or any application therefore;

        b. The commencement of any proceeding by or against any Maker for
protection, relief or reorganization under any state or the Federal Bankruptcy
or laws for the protection of debtors;

        c. The Makers effectuate an assignment for the benefit of the
creditor(s), or a receiver is appointed for the Maker or for the borrowers'
business, or for any of the security of this promissory note; or

7. REMEDY OF DEFAULT: Maker(s) shall have the right to have monetary default
enforcement of this Promissory Note discontinued if Maker(s) meets certain
conditions. Those conditions are that Maker(s) (a) pays Holder all sums which
then would be due under this Promissory Note as if no acceleration had occurred;
(b) pays all expenses incurred in enforcing this Promissory Note, including, but
not limited to, default interest, late payment penalties, expenses, attorneys'
fees, advisor's fees.

8. COSTS OF COLLECTION: If this Note is placed in the hands of any attorney for
collection after any default, such as failure to pay a scheduled payment of
interest on the maturity date, whether suit be brought or not, the undersigned
promises to pay a reasonable sum as an attorney fee, in addition to all costs
and expenses incurred by Holder including costs of suit and preparation
therefor. Maker(s) further promise to pay an actual attorney's fee on appeal and
actual attorney's fees incurred in collecting on any judgment rendered by a
court having jurisdiction over this matter, whether such fees are incurred
before or after final judgment. Maker(s) shall pay all costs including any and
all attorney's fees incurred at such attorneys' then normal hourly rates and
this paragraph shall constitute an instruction to any court involved in such
suit or collection that such rate or rates shall be deemed reasonable. Said
attorneys' fees shall be added to the principal balance and accrue interest at
the default rate in this Note.

9. MAKERS ARE PRINCIPALS: Each maker of this Promissory Note executes the same
as a principal and not as a surety.

10. WAIVER: All persons liable either now or hereafter for the payment of this
Note severally waive presentment, protest, demand and notice of nonpayment
hereof, and agree that any modification of the terms of payment made at the
request of any person liable hereon shall in no way impair their liability
hereon.

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11. TRANSFERS: No assumption of this Note will be allowed without the written
consent of the Holder.

12. BUSINESS PURPOSE: Maker(s) represent and warrant (under the penalties of
perjury) that all funds advanced to Maker(s) evidenced by this Promissory Note
will be used primarily and exclusively for business or commercial investment and
that no portion of said proceeds will be used for any personal, family
household, agricultural or other consumer purposes.

13. APPLICABLE LAW: The Promissory Note shall be construed according to the laws
of the State of Oregon.

14. SECURITY OF NOTE: This Promissory Note shall be secured by a UCC-1 Security
agreement of same date2 herewith on the property described therein which shall
secure payment of all indebtedness, principal and interest, as well as all
future advances made by Holder to Maker(s), whether in the form of renewals or
extension of, or substitutions for existing indebtedness, all expenses, costs
and fees, including reasonable attorney's fees, advisor's fees, and any and all
other liabilities of Maker(s) to Holder of whatsoever kind of nature, due or to
become due, now existing or hereafter created or created under the above
described. Maker(s) agrees to abide by all terms of said security agreement
until Note is paid in full.

15. FAILURE TO ENFORCE NOT A WAIVER: Failure to exercise any right or option of
Holder shall not constitute a waiver of the right to exercise such right or
option if Maker(s) is in default hereunder. Failure of Holder to require strict
compliance with the terms of this note shall not waive the Holder's right to
require strict compliance in the future.

16. NOTICE: All payments, notices, demands, requests, consents, approvals and
other instruments required or permitted to be given pursuant to the terms of
this Note or the UCC-1 securing this Note shall be in writing and shall be
deemed to have been properly given if sent by registered or certified mail,
postage prepaid, return receipt requested, to the address as set forth below;
provided that either party may change such party's address upon five (5) days
notice to the other. Such notice, demand, request, consent, approval and other
instruments shall be deemed to have been served on the third day following the
date of mailing.

17. REPRESENTATIONS: This Note contains all agreements between the parties,
whether oral or in writing.

ORAL AGREEMENTS, PROMISES, OR COMMITMENTS TO: (1) LOAN MONEY, (2) EXTEND CREDIT,
(3) MODIFY OR AMEND ANY TERMS OF THE LOAN DOCUMENTS, (4) RELEASE ANY GUARANTOR,
(5) FORBEAR FROM ENFORCING REPAYMENT OF THE LOAN OR THE EXERCISE OF ANY REMEDY
UNDER THE LOAN DOCUMENTS OR (6) MAKE ANY OTHER FINANCIAL

                                       3
<PAGE>   4

ACCOMMODATION PERTAINING TO THE LOAN ARE ALL UNENFORCEABLE UNDER OREGON LAW.

Executed on the date set forth above.

MICROHELIX LABS, INC., AN OREGON CORPORATION

By: /S/ RICHARD G. SASS
    --------------------------------------
    Richard G. Sass   Its:  President

    /S/ RICHARD G. SASS
------------------------------------------
    Richard G. Sass, Personally

Holder's Address:                           Maker's Address:

The Confederated Tribes of the              microHelix Labs, Inc.
Grand Ronde Community of Oregon             16125 SW72nd Avenue
C/o Strategic Wealth Management, Inc.       Portland, OR  97224
401 Parkplace, Suite 100
Kirkland, WA  98033                         Richard G. Sass
                                            02000 Palatine Hill Road
                                            Portland, OR  97219

                                       4

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