Document:

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                                                                    Exhibit 10.1

                     AMENDMENT TO PATENT LICENSE AGREEMENT

     This Amendment to Patent License Agreement (the "Amendment") is made as of
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September 30, 2000 (the "Effective Date") by and between Fukuda Denshi Co.,
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Ltd., a Japanese corporation having its principal place of business at 39-4,
Hongo 3-chome, Bunkyo-ku, Tokyo, Japan ("Licensor") and Data Critical
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Corporation, a Delaware corporation having its principal place of business at
19820 North Creek Parkway Suite 100, Bothell, Washington, 98011 U.S.A.
("Licensee").
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                                  WITNESSETH

     WHEREAS, Licensor and Licensee are parties to a Patent License Agreement
dated as of August 31,1998 (the "License Agreement").
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     WHEREAS, Licensor and Licensee wish to amend the License Agreement as set
forth in this Amendment to grant Licensee the exclusive license for the purpose
of entitling Licensee to sue for infringement and provide for conditions of
granting the exclusive license.

     NOW, THEREFORE, in consideration of the mutual consideration, promises,
representations, and covenants set forth herein, the receipt and sufficiency of
which are hereby acknowledged, Licensor and Licensee agree as follows:

                                   AGREEMENT

     1.   All capitalized terms used but not defined herein shall have the
     meaning given them in the License Agreement.

     2.   Article 2 of the License Agreement shall be amended to read in its
     entirety as follows:

     "Licensor hereby grants to licensee during the term of this Agreement an
     exclusive license to make, use, offer for sale and sell Products and
     Systems under the Patent in the United States, with an exclusive right to
     sublicense or subcontract [*].  Licensee shall promptly provide Licensor
     with the list of the subcontractors and/or sublicensees that manufacture
     the Products upon the request of Licensor.  Notwithstanding the foregoing,
     Licensor or its affiliates may make, use, offer for sale and sell Products
     and Systems using the Patent [*]."

     3.   A new Article 4.1(c) shall be added to the license Agreement to read
     in its entirety as follows:

     "(c) Licensee shall pay to Licensor [*] by no later than [*] in
     consideration of the grant of exclusive right as provided in Article 2
     hereof."

     4.   Article 7.1 of the license Agreement shall be amended to read in its
     entirety as follows:

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     "Licensor represents and warrants that it has the right to grant the
     license in and to the Patent.  The grant of license by Licensor under this
     Agreement shall not be construed as a warranty against infringement of
     patents or any other intellectual property rights held by third parties or
     warranty of the validity or scope of the Patent."

     5.   Article 7.2 of the License Agreement shall be amended to read in its
     entirety as follows:

     "Licensor assumes no liability for performance or function of Products or
     Systems manufactured by Licensee and Licensee shall hold Licensor harmless
     from any claim asserted against Licensor by any third party regarding
     Products or Systems manufactured by Licensee or any subcontractor or
     sublicensee, including but not limited to claims based on infringement of
     patents or any intellectual property rights held by third parties."

     6.   A new Article 13 shall be added to the License Agreement to read in
     its entirety as follows:

     "Licensee shall use reasonable commercial efforts to create [*]. Licensee
     shall offer the [*] to Licensor [*] of [*]. Further, the price of the [*]
     quoted by licensee to Licensor shall not include any fees for creating the
     [*] and Licensee shall not require that Licensor make any [*]."

     7.   All other provisions of the License Agreement shall remain unchanged
     and in full force and effect.

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     IN WITNESS WHEREOF, the parties have executed this Amendment as of the date
listed above.

                                        LICENSOR:

                                        Fukuda Denshi Co., Ltd.

                                        By:      /s/ Kotaro Fukuda
                                           -------------------------------------

                                        Name:  Kotaro Fukuda

                                        Title:  President

                                        LICENSEE:

                                        Data Critical Corporation

                                        By:_____________________________________

                                        Name:___________________________________

                                        Title:__________________________________

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                                                                    Exhibit 10.2

                           PATENT LICENSE AGREEMENT

     This Agreement, entered into this 31/st/ day of August, 1998 by and between
Fukuda Denshi Co., Ltd., a Japanese corporation having its principal office of
business at 39-4, Hongo 3-chome, Bunkyo-ku, Tokyo, Japan ("Licensor") and Data
Critical Corporation, a Washington (U.S.A.) corporation having its principal
office of business at 2733 152nd Avenue N.E., Redmond, Washington, U.S.A.
("Licensee"),

                                  WITNESSETH

     WHEREAS, Licensor owns a certain U.S. patent relating to an apparatus for
alerting doctors; and

     WHEREAS, Licensee desires a license of the Licensor's patent from Licensor
to permit Licensee to manufacture, use and sell said apparatus, which Licensor
is willing to grant under the terms and conditions hereinafter set forth;

     NOW THEREFORE, Licensor and Licensee agree as follows:

Article 1. Definitions

     1.   The term "Patent" means the United State Patent No. 5003984 now owned
by Licensor.

     2.   The term "Product" means any apparatus embodying the Patent.

     3.   The term "System" means any system for alerting doctors in which one
or more Products is or are incorporated.

Article 2. Grant of License

     Licensor hereby grants to Licensee during the term of this Agreement, with
a limited right to sublicense or subcontract [*], a non-exclusive license to
make, use, offer for sale and sell Products and Systems under the Patent in the
United States.  Licensee shall promptly provide Licensor with the list of the
subcontractors and/or sublicensees which manufacture the Products upon the
request of Licensor.

Article 3. [*]

     Except with the prior written approval of Licensor, Licensee shall not,
directly or indirectly, [*], nor shall Licensee sell Products to any party who,
Licensee knows or has reason to believe, intends to or may [*].

Article 4. Royalty

     1.   In consideration of the license granted to Licensee;

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          (a)  Licensee shall pay to Licensor an initial payment of [*] within
[*] after the execution of this Agreement, and

          (b)  During the initial [*] term of this Agreement, Licensee shall pay
to Licensor a running royalty of [*] for each System sold by Licensee. For each
successive [*] renewal term of this Agreement (as set forth in Article 9
hereof), the parties shall negotiate in good faith to set the running royalty
for such renewal term; provided, however, that in no case shall the running
royalty be increased more than [*] from the running royalty in effect for the
previous [*]term. Systems shall be deemed to be sold when they are invoiced.

     2.   The running royalty shall be computed quarterly as of the last days of
March, June, September and December of each year during the term of this
Agreement and shall be paid to Licensor within thirty days after each of the
respective last day of each month mentioned above.

     3.   All payments due by Licensee to Licensor under this Agreement shall be
made by wire transfer in US dollars to a bank account designated by Licensor.

     4.   In case of delay of payment payable hereunder Licensee shall pay to
Licensor interest at the rate of [*] per annum on the amount in delay pro rata
for each day of delay.

     5.   Any payments to be made by Licensee to Licensor under this Agreement
shall be [*] for any reason whatsoever.

Article 5. Reports and Records

     1.   Licensee shall, at the time of each payment of the running royalty,
submit to Licensor a detailed report in relation to the quantity of Products and
Systems manufactured, used or sold by Licensee during each three month period in
form and substance satisfactory to Licensor.

     2.   Licensee shall keep true and accurate records and books of account,
and shall permit Licensor or its authorized representative reasonable access to
such records and books of account at any time during ordinary business hours for
inspection purposes.

Article 6. Tax

     Licensor shall bear the withholding tax legally required to be levied under
the US law on the income of Licensor arising under this Agreement.  In case
Licensee deducts such taxes from the amount due to Licensor, Licensee shall send
to Licensor, without delay, a tax receipt certificate showing the payment of
such tax by Licensee.

Article 7. Warranty

1.  Licensor represents and warrants (i) that it has the right to grant the
license in and to the Patent and (ii) that it is not aware of any claim that the
Patent infringes upon any other United States patent or other intellectual
property right of a third party.

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     2.   Licensor assumes no liability for performance or function of Products
manufactured by Licensee and Licensee shall hold Licensor harmless from any
claim asserted against Licensor by any third party on Products manufactured by
Licensee.

     3.   Each party shall promptly inform the other party of any alleged
infringement of the Patent by any third party in the United States. Licensor
shall have the right to defend or institute suit with respect to any claim of
alleged patent infringement through counsel of its own choice. If Licensor
fails, within ninety (90) days of learning of an alleged infringement, to secure
cessation or the infringement, institute suit against the infringer, or provide
to Licensee satisfactory evidence that Licensor is engaged in bona fide
negotiation regarding settling the infringement claim, Licensee may assume full
right and responsibility, at Licensee's expense and with counsel of Licensee's
choice, to secure cessation of the infringement, institute suit against the
infringer or enter into settlement negotiations with the infringer. Neither
Licensor nor Licensee is obligated under this Article 7.3 to institute a suit
against an alleged infringer of the Patent.

Article 8. Confidentiality

     During the term of this Agreement, each party may receive confidential or
trade secret information, including information concerning the other party's
present and future business, marketing plans, regulatory submissions, product
lines, product plans, date testing and research techniques, inventions,
processes, practices, trade secrets, and like information (collectively,
"Confidential Information") from the other party.  Each party agrees to hold in
confidence all Confidential Information of the other party and not to disclose
or make such Confidential Information available to any third parties without the
other party's written permission.  Notwithstanding the foregoing, Confidential
Information shall not include information that the receiving party can prove:
(i) was in the public domain at the time it was disclosed or has entered the
public domain through no fault of the receiving party; (ii) was known to the
receiving party, without restriction, at the time of disclosure, as demonstrated
by files in existence at the time of disclosure; (iii) is disclosed with the
prior written approval of the disclosing party; (iv) was independently developed
by the receiving party without any use of the Confidential Information and by
employees of the receiving party who have not had access to the Confidential
Information, as demonstrated by files created at the time of such independent
development; (v) becomes known to the receiving party, without restriction, from
a source other than the other party without breach of this Agreement by the
receiving party and otherwise not in violation of the disclosing party's rights;
(vi) is disclosed generally to third parties by the disclosing party without
restrictions similar to those contained in this Agreement; or (vii) is disclosed
pursuant to the order or requirement of a court, administrative agency, or other
governmental body; provided, however, that the receiving party shall provide
prompt notice of such court order or requirement to the disclosing party to
enable the disclosing party to seek a protective order or otherwise prevent or
restrict such disclosure.  This Article 8 will survive for a period terminating
two (2) years from the date on which Confidential Information is last disclosed
under this Agreement.

Article 9. Term of Agreement

     This Agreement shall remain in force for a term of [*] from the date of
execution of this Agreement and shall be automatically renewed for successive
[*] terms thereafter, unless Licensee
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notifies Licensor at least thirty (30) days prior to the end of any [*] term
that Licensee elects to terminate this Agreement; provided, however, that this
Agreement shall terminate upon expiration of the Patent.

Article 10. Cancellation

     1.   In case there is any breach of this Agreement by either party, the
other party may give a notice requesting such party to correct the breach. If
the breach is not corrected or settlement is not reached within thirty days
after said notice; such party not in breach shall have the right to cancel this
Agreement by written notice of cancellation thereafter and any reasonable
attorney's fee and other costs for collection shall be indemnified by the party
responsible for the breach.

     2.   Upon the occurrence of any of the following circumstances, Licensor
may [*] terminate this Agreement:

          (a)  If Licensee assigns or transfer this Agreement or the rights or
the obligations hereunder without the prior written consent of Licensor;

          (b)  If Licensee becomes bankrupt or insolvent;

          (c)  If a receiver for Licensee is appointed;

          (d)  If Licensee goes into liquidation; or

          (e)  If there is a change in the control of management of Licensee
               which materially adversely affects the interest of Licensor.

Article 11. Effect of Termination

     1.   Upon the termination of this Agreement for any reason:

          (a)  Licensee shall have a period of [*] to sell all Products and
Systems currently in inventory or committed pursuant to a contract or written
letter of intent with a third party, and shall thereafter make no further use of
the Patent.

          (b)  Licensee shall be obliged to make payment of running royalties
under Article 4 hereof with regard to any Products sold after the termination of
this Agreement according to the subsection a) above, and to furnish written
reports relating to such payments.

     2.   No termination of this Agreement for any reason shall prejudice the
right of Licensor to receive any monies due to it under this Agreement and the
rights or remedies of either party in respect of any antecedent breach of this
Agreement.

Article 12. Miscellaneous

     1.   No other rights

     No license or right, expressed or implied, shall be granted except as
provided herein.

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     2.  Assignment

     Neither this Agreement nor any right or obligation hereunder shall be
assignable in whole or in part by either party without the prior written consent
of the other party.

     3.   Notice

     All notices and statements to be given shall be in writing and sent to the
respective addresses of the parties as set forth above unless notification of a
change of address is given in accordance with this Article.  If any such notice
shall be deposited in a regularly authorized airmail facility, registered and
postage prepaid, such notice shall be deemed to have been reasonably given at
the time of such deposit.

     4.   Non Waiver

     Any failure by either party to enforce at any time any terms or conditions
of this Agreement shall not be considered a waiver of that party's right to
enforce each and every term and condition of this Agreement.  Acceptance of
payments by Licensor shall not be deemed a waiver of any violation of or default
in any of the provisions of this Agreement by Licensee.

     5.   Force Majeure

     Any of the parties hereto shall not be released from its duty for any
reason except for force majeure such as war, fire, natural calamities or other
causes beyond control of the parties.

     6.   Governing Law

          This Agreement shall be interpreted and construed in accordance with
the laws of the State of Washington.

     7.   Entire Agreement and Amendments

     This Agreement constitutes the entire agreement between the parties with
respect to the subject matter of this Agreement.  No amendment or supplement
hereof shall be effective or binding on either party unless reduced to writing
and execute by the duly authorized representatives of both parties.

     8.   Severability

     The invalidity or any part of this Agreement shall not invalidate the
whole.
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     IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement in
duplicate to be executed by its duly authorized officers or representatives as
of the date first above written.

                         Licensor:  Fukuda Denshi Co., Ltd.

                                            /s/ Takeyasu Yamamura
                                    ----------------------------------
                                    By     Takeyasu Yamamura

                                    Title  Director

                         Licensee:  Data Critical Corporation

                                    /s/ Jeffrey S. Brown
                                    -----------------------------------

                                    By     Jeffrey S. Brown

                                    Title  President/CEO

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