Document:

<PAGE>   1
                                                                   EXHIBIT 10.14

                           VITAL SIGNALS, INCORPORATED

                   INCENTIVE STOCK OPTION, NONQUALIFIED STOCK
                 OPTION AND RESTRICTED STOCK PURCHASE PLAN-1989

<PAGE>   2

                           VITAL SIGNALS, INCORPORATED

                   INCENTIVE STOCK OPTION, NONQUALIFIED STOCK
                 OPTION AND RESTRICTED STOCK PURCHASE PLAN-1989

      1.     Purposes of the Plan.

      The purposes of this Incentive Stock Option, Nonqualified Stock Option and
Restricted Stock Purchase Plan-1989 (the "Plan") of Vital Signals, Incorporated,
a California corporation (the "Company"), are (a) to insure the retention of the
services of existing executive personnel, key employees and non-employee
directors of the Company or its affiliates; (b) to attract and retain competent
new executive personnel and key employees; (c) to provide incentive to all such
personnel, employees and non-employee directors to devote their utmost effort
and skill to the advancement and betterment of the Company, by permitting them
to participate in the ownership of the Company and thereby in the success and
increased value of the company; and (d) to allow consultants, business
associates and others with important business relationships with the Company the
opportunity to participate in the ownership of the Company and thereby have an
interest in the success and increased value of the company.

      2.    Shares Subject to the Plan.

      The shares of stock subject to the incentive options having the terms and
conditions set forth in Section 6 below (hereinafter "incentive options") and/or
nonqualified options or rights to purchase restricted shares having the terms
and

<PAGE>   3

conditions set forth in Section 7 below (hereinafter "nonqualified options" and
"rights of purchase") and other provisions of the Plan shall be shares of the
Company's authorized but unissued or reacquired common stock (herein sometimes
referred to as the "Common Stock"). The total number of shares of the Common
Stock of the Company which may be issued under the Plan shall not exceed, in the
aggregate, 2,000,000 shares. The limitations established by the preceding
sentence shall be subject to adjustment as provided in Section 8 below. In the
event that any outstanding incentive option, nonqualified option or right of
purchase granted under the Plan can no longer under any circumstances be
exercised, or in the event that any shares purchased pursuant to the Plan are
reacquired by the Company, for any reason, the shares of Common Stock allocable
to the unexercised portion of such incentive option, nonqualified option or such
right of purchase, or the shares reacquired, as the case may be, may again be
subject to grant or issuance under the Plan.

      3.    Eligibility.

            (a)   Incentive Options. Officers and other key employees of the
      Company or its parent or of any subsidiary corporation (including
      directors if they are also employees of the Company or a subsidiary), as
      may be determined by the Board or the Committee, who qualify for incentive
      stock options under the applicable provisions of the Internal Revenue
      Code, will be eligible for selection to receive

                                        -2-

<PAGE>   4

      incentive options under the Plan. An employee who has been granted an
      incentive option may, if otherwise eligible, be granted an additional
      incentive option or options and/or receive a nonqualified option or
      options or rights of purchase if the Board or Committee shall so
      determine.

            (b)   Nonqualified Options and Rights of Purchase. Officers and
      other key employees of the Company or of any subsidiary corporation, any
      member of the Board of Directors of the Company, whether or not he or she
      is employed by the Company, or consultants, business associates or others
      with important business relationships with the Company, will be eligible
      to receive nonqualified options or rights of purchase under the Plan. An
      individual who has been granted a nonqualified option or right of purchase
      may, if otherwise eligible, be granted an incentive option or an
      additional nonqualified option or options or rights of purchase if the
      Board or Committee shall so determine.

      4.    Administration of the Plan.

            (a)   This Plan shall be administered by the Board of Directors of
      the Company (the "Board") and/or by a committee (the "Committee")
      consisting of three (3) or more persons, at least two of whom shall be
      directors of the Company, who shall be appointed by, and serve at the
      pleasure of, the Board of Directors. No person serving as a member of the
      Board or the Committee shall act on any

                                      -3-
<PAGE>   5
      matter relating solely to such person's own interests under the Plan or
      any option thereunder. For purposes of the Plan, the term "Administrator"
      shall mean the Board, or if the Board delegates responsibility for any
      matter to the Committee, the Committee., The Administrator may from time
      to time, in its discretion, determine which persons shall be granted
      incentive options, nonqualified options or rights of purchase under the
      Plan, the terms thereof, and the number of shares for which an incentive
      option or options or nonqualified option or options or a right or rights
      of purchase shall be granted.

            (b)   The Administrator shall have full and final authority to
      determine the persons to whom, and the time or times at which, incentive
      options, nonqualified options and rights of purchase shall be granted, the
      number of shares to be represented by each incentive option, nonqualified
      option and right of purchase and the consideration to be received by the
      Company upon the exercise thereof; to interpret the Plan; to amend and
      rescind rules and regulations relating to the Plan; to determine the form
      and content of the incentive options or nonqualified options to be issued
      and terms and conditions of rights of purchase to be offered under the
      Plan; to determine the identity or capacity of any persons who may be
      entitled to exercise a participant's rights under any incentive option,
      nonqualified option or right of purchase under the Plan; to

                                      -4-
<PAGE>   6

      correct any defect or supply any omission or reconcile any inconsistency
      in the Plan or in any incentive option, nonqualified option or right of
      purchase in the manner and to the extent the Administrator deems desirable
      to carry the Plan, incentive option, nonqualified option or right of
      purchase into effect; to accelerate the exercise date of any incentive
      option, nonqualified option or release and/or waive any repurchase rights
      of the Company contained in any right of purchase; to provide for an
      option to the Company to repurchase any shares issued upon exercise of an
      option upon termination of employment; and to make all other
      determinations necessary or advisable for the administration of the Plan,
      but only to the extent not contrary to the express provisions of the Plan.
      Any action, decision, interpretation or determination by the Administrator
      with respect to the application or administration of the Plan shall be
      final and binding on all participants and prospective participants.

      5.    Option Price and Purchase Price of Shares.

            (a)   Incentive Options. The exercise price of the shares of Common
      Stock covered by each incentive option granted under the Plan shall not be
      less than the fair market value of such shares on the date the incentive
      option is granted; provided, however, that the exercise price shall not be
      less thin 110% of the fair market value if the person to whom such shares
      are granted owns 10% or more of the total outstanding stock of the
      Company.

                                      -5-
<PAGE>   7

            (b)   Nonqualified Options and Rights of Purchase. The exercise
      price of the shares of Common Stock covered by each nonqualified option
      granted and the purchase price of shares for which rights of purchase are
      offered under the plan shall not be less than the fair market value of
      such shares on the date the nonqualified option is granted or right of
      purchase is offered.

            (c)   Fair Market Value. For purposes of this Section 5, fair market
      value shall, if the Common Stock is not listed or admitted to trading on a
      stock exchange, be the average of the closing bid price and asked price of
      the Common Stock in the over-the-counter market an the date the incentive
      option or nonqualified option is granted or right of purchase is offered,
      or, if the Common Stock is then listed or admitted to trading on any stock
      exchange or the NASDAQ National Market System in the over-the-counter
      market, the closing sale price on such day on the principal stock exchange
      on which the Common Stock is then listed or admitted to trading, or, if no
      sale takes place on such day on such national market system or principal
      exchange, then the closing sale price of the Common Stock on such national
      market system or exchange on the next preceding day on which a sale
      occurred. During such times as there is not a market pride available, the
      fair market value of the Company's Common Stock shall be determined by the
      Administrator, which shall consider, among other facts which it considers
      to be relevant, the book value of such

                                      -6-
<PAGE>   8

      stock and the earnings of the Company. The exercise price or the purchase
      price, as the case may be, shall be subject to adjustment as provided in
      Section 8 below.

      6.    Terms and Conditions of Incentive Options.

      Each incentive option granted pursuant to this Plan shall be evidenced by
a written Incentive Option Agreement which shall specify that the options
subject thereto are incentive options within the meaning of Section 422A of the
Internal Revenue Code of 1986, as amended. The granting of an incentive option
shall take place only when a written Incentive Option Agreement shall have been
duly executed and delivered by or on behalf of the Company to the optionee to
whom such incentive option shall be granted. Neither anything contained in the
Plan nor in any resolution adopted or to be adopted by the Administrator shall
constitute the granting of any incentive option. The Incentive Option Agreement
shall be in the form of Exhibit A attached hereto or in such form as the
Administrator shall, from time to time, recommend, but shall comply with and be
subject to the following terms and conditions:

            (a)   Medium and Time of Payment. The option price upon the exercise
      of the incentive option shall be payable (i) in United States dollars
      payable in cash, certified check, or bank draft; (ii) subject to any legal
      restrictions on the acquisition or purchase of its shares by the Company,
      by the delivery of shares of Common Stock which shall be deemed to have a
      value to the Company equal

                                        -7-

<PAGE>   9

      to the aggregate fair market value of such shares determined at the date
      of such exercise in accordance with the provisions of Section 5 above;
      (iii) by the issuance of a Promissory Note in a form acceptable to the
      Administrator, or (iv) any combination of (i), (ii) or (iii) above.

            (b)   Grant of Incentive Option. Any incentive option shall be
      granted within ten years from the date of the adoption of this Plan or the
      date this plan is approved by the shareholders of the Company, whichever
      is earlier.

            (c)   Number of Shares. The incentive option shall state the total
      number of shares to which it pertains.

            (d)   Incentive Option Price. The incentive option price shall be
      not less than the fair market value of the shares of Common Stock on the
      date of the granting of the option.

            (e)   Term of Incentive Option. Each incentive option granted under
      the Plan shall expire within a period of not more than ten (10) years from
      the date the incentive option is granted; provided, however, that the
      incentive option shall expire within a period of not more than five (5)
      years if granted to a person who is the beneficial owner of 10% or more of
      the outstanding stock of the Company.

            (f)   Date of Exercise. The Administrator may, in its discretion,
      provide that an incentive option may be exercised immediately or that it
      may not be exercised in whole or in part for any specified period or
      periods of

                                      -8-
<PAGE>   10
      time. Except as may be so provided, any incentive option may be exercised
      in whole at any time or in part from time to time during its term.

            (g)   Termination of Employment Except Death or Disability. In the
      event that an optionee who is an employee of the Company shall cease to be
      employed by the Company or a parent or any subsidiary corporation of the
      Company or a corporation or a parent or subsidiary corporation of a
      corporation issuing and assuming an incentive option in a transaction to
      which Section 425(a) of the Internal Revenue Code of 1986, as amended,
      applies, for any reason other than his death or disability, (i) all
      incentive options granted to any such optionee pursuant to this Plan which
      are not exercisable at the date of such cessation shall terminate
      immediately and become void and of no effect, and (ii) all incentive
      options granted to any such optionee pursuant to this Plan which are
      exercisable at the date of such cessation may be exercised at any time
      within three (3) months of the date of such cessation, but in any event no
      later than the date of expiration of the incentive option period, and if
      not so exercised within such time shall become void and of no effect at
      the end of such time.

            (h)   Death or Disability of Optionee. If the optionee shall die or
      become disabled (within the meaning of Section 22(e)(3) of the Internal
      Revenue Code of 1986, as amended)

                                      -9-
<PAGE>   11
      and shall not have fully exercised his or her incentive options granted,
      pursuant to the Plan, all of such incentive options, whether or not
      otherwise exercisable, may be exercised at any time within one (1) year
      after the optionee's cessation of employment as a result of such death or
      disability but in any event no later than the date of expiration of the
      incentive option period, by such optionee, or in the event of death, by
      the executors or administrators of the optionee's estate or by any person
      or persons who shall have acquired the incentive option directly from the
      optionee by bequest or inheritance.

            (i)   Rights as a Shareholder. An optionee or a transferee of an
      incentive option shall have no rights as a shareholder with respect to any
      shares of Common Stock covered by his or her incentive option until the
      date of the issuance of a share certificate to him or her for such shares.
      No adjustment shall be made for dividends or distributions or other rights
      for which the record date is prior to the date such share certificate is
      issued.

            (j)   Nonassignability of Rights. No incentive option shall be
      assignable or transferable by the person receiving same except by will or
      the laws of descent and distribution. During the life of such person, the
      incentive option shall be exercisable only by him.

            (k)   Limitation. Notwithstanding any other provisions of the Plan,
      the aggregate fair market value (determined in

                                      -10-
<PAGE>   12

      accordance with the provisions of Section 5 above as of the time the
      incentive option is granted) of the shares of Common Stock with respect to
      which incentive stock options are exercisable for the first time by the
      optionee during any calendar year (under all such plans of the Company and
      its parent and subsidiary corporations) shall not exceed $100,000.

            (1)   Other Provisions. Any Incentive Option Agreement may contain
      such other terms, provisions and conditions as may be determined by the
      Administrator, which are not inconsistent with the provisions of Section
      422A of the Internal Revenue Code of 1986, as amended, including the
      option of the Company to repurchase any shares issued upon the exercise of
      an option upon termination of employment. Incentive options granted to
      different persons, or to the same person at different times, may be
      subject to terms, conditions and restrictions which differ from each
      other.

      7. Terms and Conditions of Nonqualified Options and Rights of Purchase.

            (a) Terms and Conditions Applicable to Nonqualified Options. Each
      nonqualified option granted pursuant to this Plan shall be evidenced by a
      written Nonqualified Option Agreement which shall specify that the options
      subject thereto are nonqualified options. The granting of a nonqualified
      option shall take place only when this written Nonqualified Option
      Agreement shall have been duly executed

                                      -11-
<PAGE>   13

      and delivered by or on behalf of the Company to the optionee to whom such
      nonqualified option shall be granted. Neither anything contained in the
      Plan nor in any resolution adopted or to be adopted by the Administrator
      shall constitute the granting of any nonqualified option. The Nonqualified
      Option Agreement shall be in the form of Exhibit B attached hereto, or in
      such form as the Administrator shall, from time to time, recommend, but
      shall comply with and be subject to the following terms and conditions:

                  (i)   Medium and Time of Payment. The nonqualified option
            price shall be payable (i) in United States dollars payable in cash,
            certified check, or bank draft; (ii) subject to any legal
            restrictions on the acquisition or purchase of its shares by the
            Company, by the delivery of shares of Common Stock which shall be
            deemed to have a value to the Company equal to the aggregate fair
            market value of such shares determined at the date of such exercise
            in accordance with the provisions of Section 5 above; (iii) or by
            the issuance of promissory note in a form acceptable to the
            Administrator; or (iv) any combination of (i), (ii) or (iii) above.

                  (ii)  Number of Shares. The nonqualified option shall state
            the total number of shares to which it pertains.

                                      -12-
<PAGE>   14

                  (iii) Term of Nonqualified Option. Each nonqualified option
            granted under the Plan shall expire within a period of not more than
            ten (10) years from the date the nonqualified option is granted.

                  (iv)  Date of Exercise. The Administrator may, in its
            discretion, provide that a nonqualified option may be exercised
            immediately or that it may not be exercised in whole or in part for
            any specified period or periods of time. Except as may be so
            provided, any nonqualified option may be exercised in whole at any
            time or in part from time to time during its term.

                  (v)   Termination of Employment Except Death or Disability. In
            the event that an optionee who is an employee of the Company shall
            cease to be employed by the Company or any of its subsidiaries for
            any reason other than his or her death or disability, or, in the
            event that an optionee who is a director but not an employee of the
            Company shall cease to be a director of the Company for any reason
            other than his or her death or disability, (i) all nonqualified
            options granted to any such optionee pursuant to this Plan which are
            not exercisable at the date of such cessation shall terminate
            immediately and become void and of no effect, and (ii) all
            nonqualified options granted to any such optionee pursuant to this
            Plan which are exercisable at the date of such cessation

                                      -13-
<PAGE>   15

            may be exercised at any time within three (3) months of the date of
            such cessation, but in any event no later than the date of
            expiration of the nonqualified option period, and if not so
            exercised within such time shall become void and of no effect at the
            end of such time.

                  (vi)  Death or Disability of Optionee. If the optionee shall
            die or become permanently disabled and shall not have fully
            exercised his or her nonqualified options granted pursuant to the
            Plan, all of such nonqualified options, whether or not otherwise
            exercisable, may be exercised at any time within one (1) year after
            the optionee's death or permanent disability but in any event no
            later than the date of expiration of the nonqualified option period,
            by such optionee, or in the event of death, by the executors or
            administrators of the optionee's estate or by any person or persons
            who shall have acquired the nonqualified option directly from the
            optionee by bequest or inheritance.

            (b)   Terms and Conditions Applicable to Rights of Purchase Under
      the Plan. After the Administrator shall have determined to offer to a
      person eligible to participate (hereinafter "offeree") the right to
      purchase shares under the Plan, it shall cause to be delivered to the
      offeree a written notice thereof, together with a Stock

                                      -14-
<PAGE>   16

      Purchase Agreement which shall constitute the Company's offer of the right
      of purchase and shall contain the terms and conditions of purchase,
      including, without limitation, the number of shares which the offeree
      shall be entitled to purchase, the purchase price per share, any other
      terms, conditions or restrictions relating thereto, and the number of days
      or period the offeree shall have to accept such offer. The execution and
      delivery of the Stock Purchase Agreement by the offeree to the Company
      within said number of days or period shall constitute acceptance of the
      offer and said Stock Purchase Agreement shall, thereupon, become a binding
      obligation of the Company and the offeree. Each Stock Purchase Agreement
      shall be in the form of Exhibit C attached hereto, or in such form as the
      Administrator shall, from time to time, recommend, but shall comply with
      and be subject to the following terms and conditions:

                  (i)   Method of Payment. The purchase price of the shares
            shall be paid to the Company, (i) in cash; (ii) by check or bank
            draft; (iii) by a promissory note, with or without interest, payable
            to the Company; or (iv) any combination of (i), (ii) or (iii) above,
            as the Administrator, shall in its discretion determine. The terms,
            manner and timing of such payment and the form and content of any
            promissory note, shall be included or made a part of the Stock
            Purchase Agreement. If payment, in whole or in part, is made by a
            promissory note, the shares so purchased with

                                      -15-
<PAGE>   17

            such note shall be held in pledge with the Company to secure payment
            of the note. The pledge shall be in such form and shall contain such
            terms as the Administrator may deem appropriate.

                  (ii)  Number of Shares. The Stock Purchase Agreement shall
            state the total number of shares which the offeree shall be entitled
            to purchase and whether or not the offeree may purchase less than
            all of the shares offered.

                  (iii) Term of Offer. The Stock Purchase Agreement shall
            specify the number of days or other period the offeree shall have to
            accept the offer, not to exceed ninety (90) days from the date of
            such offer. If not accepted by the offeree within such number of
            days or other period, the offer shall automatically terminate upon
            expiration thereof, and the offer shall thereupon be null and void
            and without further effect, except that the Administrator may extend
            such number of days or other period available for acceptance, not to
            exceed an additional ninety (90) days. Acceptance of the offer shall
            occur when the offeree has executed and redelivered to the Company
            one or more counterparts of the Stock Purchase Agreement in the form
            delivered to him by the Company and, to be effective, such
            acceptance must be without condition or reservation of any kind
            whatsoever.

                                      -16-
<PAGE>   18

                  (iv)  Escrow of Dividends. If payment for shares is made by a
            promissory note, all cash dividends paid with respect to the shares
            so purchased shall be held in escrow by the Company for the account
            of the purchaser without interest until such time as the shares are
            fully paid. Upon full payment of the promissory note, all of such
            escrowed dividends shall be paid to the purchaser without interest.

            (c)   Terms and Conditions Applicable Equally to Nonqualified
      Options Granted and to Rights of Purchase Offered Under the Plan.

                  (i)   Rights as a Shareholder. An optionee or a offeree or a
            transferee of a nonqualified option or right of purchase shall have
            no rights as a shareholder with respect to any shares of Common
            Stock covered by his or her nonqualified option or right of purchase
            until the date of the issuance of a share certificate to such
            optionee for such shares. No adjustment shall be made for dividends
            or distributions or other rights for which the record date is prior
            to the date such share certificate is issued.

                  (ii)  Nonassignability of Rights. No nonqualified option or
            right of purchase shall be assignable or transferable by the person
            receiving same except by will or the laws of descent and
            distribution. During

                                      -17-
<PAGE>   19

             the life of such person, the nonqualified option or right of
             purchase shall be exercisable only by him or her.

                  (iii) Other Provisions. Any Nonqualified Option Agreement and
            any Stock Purchase Agreement may contain such other terms,
            provisions and conditions as may be determined by the Administrator,
            and, without limiting the generality of the foregoing, the Board of
            Directors or the Committee, as the case may be, shall have
            discretion to offer to a person a choice between having nonqualified
            options granted or having a right of purchase offered to him, or to
            grant both nonqualified options and a right of purchase or to
            condition a grant of nonqualified options upon a purchase of shares
            under a right of purchase under the Plan. Nonqualified options
            granted or offers made to different persons, or to the same person
            at different times, may be subject to terms, conditions and
            restrictions which differ from each other.

      8.    Changes in Capital Structure.

      In the event that the outstanding shares of Common Stock of the Company
are hereafter increased or decreased or changed into or exchanged for a
different number or kind of shares or other securities of the Company by reason
of merger, consolidation or reorganization in which the Company is the surviving
corporation or of a recapitalization, stock split,

                                      -18-
<PAGE>   20

combination of shares, reclassification, reincorporation, stock dividend (in
excess of 2%), or other change in the corporate structure of the Company,
appropriate adjustments shall be made by the Board of Directors in the aggregate
number and kind of shares subject to this Plan, and the number and kind of
shares and the price per share subject to outstanding incentive options,
nonqualified options and rights of purchase in order to preserve, but not to
increase, the benefits to persons then holding incentive options, nonqualified
options and/or rights of purchase.

      In the event that the Company at any time proposes to merge into,
consolidate with or to enter into any other reorganization (including the sale
of substantially all of its assets) in which the Company is not the surviving
corporation, or if the Company is the surviving corporation and the ownership of
the outstanding capital stock of the Company following the transaction changes
by 80% or more as a result of such transaction, the Plan and all unexercised
incentive options, nonqualified options and rights of purchase granted hereunder
shall terminate, unless provision is made in writing in connection with such
transaction for the continuance of the Plan and for the assumption of incentive
options, nonqualified options and rights of purchase theretofore granted, or the
substitution for such incentive options, nonqualified options and rights of
purchase of new options and rights of purchase covering the shares of a
successor corporation, with appropriate

                                      -19-
<PAGE>   21

adjustments as to number and kind of shares and prices, in which event the Plan
and the incentive options, nonqualified options and rights of purchase
theretofore granted or the new incentive options, nonqualified options and
rights of purchase substituted therefor, shall continue in the manner and under
the terms so provided. If such provision is not made in such transaction for the
continuance of the Plan and the assumption of incentive options, nonqualified
options and rights of purchase theretofore granted or the substitution for such
incentive options, nonqualified options and rights of purchase of new incentive
options, nonqualified options and rights of purchase covering the shares of a
successor corporation, then the Administrator shall cause written notice of the
proposed transaction to be given to the persons holding incentive options,
nonqualified options or rights of purchase not less than 30 days prior to the
anticipated effective date of the proposed transaction, and all incentive
options, nonqualified options and rights of purchase shall be accelerated and,
concurrent with the effective date of the proposed transaction, such person
shall have the right to exercise incentive options, nonqualified options and
accept rights of purchase in respect of any or all shares then subject thereto.

      9.    Amendment and Termination of the Plan.

      The Board of Directors of the Company may from time to time alter, amend,
suspend or terminate the Plan in such respects as the Board of Directors may
deem advisable;

                                      -20-
<PAGE>   22

provided, however, that no such alteration, amendment, suspension or termination
shall be made which shall substantially affect or impair the rights of any
person under any incentive option, nonqualified option or right of purchase
theretofore granted to him without his consent. Without limiting the generality
of the foregoing, to the extent permitted by applicable law, the Board of
Directors of the Company may alter or amend the Plan to comply with requirements
under the Internal Revenue Code relating to restricted stock options, incentive
options, qualified options or other options which give the optionee more
favorable tax treatment than that applicable to options granted under this Plan
as of the date of its adoption. Upon any such alteration or amendment, to the
extent permitted by applicable law, any outstanding option granted hereunder
shall be subject to the more favorable tax treatment afforded to an optionee
pursuant to such terms and conditions as the Administrator may determine.

      Unless the Plan shall theretofore have been terminated, the Plan shall be
effective on September 26, 1989, and shall terminate on September 26, 1999.

      10.   Application of Funds.

      The proceeds received by the Company from the sale of Common Stock
pursuant to incentive options, nonqualified options and rights of purchase,
except as otherwise provided herein, will be used for general corporate
purposes.

                                      -21-
<PAGE>   23

      11.   No Obligation to Exercise Option or Right of Purchase.

      The granting of an incentive option, nonqualified option or the offer of a
right of purchase shall impose no obligation upon the optionee to exercise such
an incentive option, nonqualified option or the offeree to accept such right of
purchase.

      12.   Continuance of Employment.

      The Plan or the granting of any incentive option, nonqualified option or
right of purchase thereunder shall not impose any obligation on the Company to
continue the employment of any optionee or offeree.

      13.   Financial Disclosure.

      Upon the granting of any incentive option, nonqualified option or right of
purchase under this Plan, the optionee or offeree shall be entitled to receive
such financial information as may from time to time be disclosed to the
stockholders of the Company. Such financial information shall be in the form
deemed appropriate by the Board of Directors for distribution to the
stockholders.

                                      -22-
<PAGE>   24
                                                            ISO-________________

                     INCENTIVE COMMON STOCK OPTION AGREEMENT

      THIS INCENTIVE COMMON STOCK OPTION AGREEMENT (the "Agreement"), made this
_________ day of ____________ 1989, between VITAL SIGNALS, INCORPORATED, a
California corporation (hereinafter referred to as the "Company"), and
___________________________, an employee of the Company, its parent or one or
more of its subsidiaries (the "Optionee"), is made with reference to the
following fact:

                                R E C I T A L S:
                                - - - - - - - -

      A.    Optionee commenced employment with the Company on ______________,
19__, and is presently ___________________________, and in such position is a
valued and key employee of the Company.

      B.    The Company desires, by affording the Optionee an opportunity to
purchase shares of Common Stock of the Company (hereinafter called "Shares"), as
hereinafter provided, to carry out the purpose of the "Incentive Stock Option,
Nonqualified Stock Option and Restricted Stock Purchase Plan -- 1989" (the
"Plan").

      NOW, THEREFORE, IN CONSIDERATION of the mutual covenants hereinafter set
forth, and for good and valuable consideration, the parties hereto have agreed,
and do hereby agree, as follows:

      1.    Grant of Option.

      The Company hereby irrevocably grants to the Optionee the right and option
(hereinafter called the "Option") to purchase all or any part of an aggregate of
______________ Shares (such number being subject to adjustment as provided in
Paragraph 8 hereof) on the terms and conditions herein set forth. The Option
granted herein is an "incentive option" within the meaning of the Plan and
Section 422A of the Internal Revenue Code of 1986, as amended.

      2.    Purchase Price.

      The purchase price of the Shares covered by the Option shall be $______
per share, representing one hundred percent (100%) of the fair market value of
the shares as determined pursuant to Section 5 of the Plan as of the date
hereof.

                                   Exhibit A
<PAGE>   25
      3.    Term of Option.

      The term of the option shall commence on the date hereof and all rights to
purchase shares hereunder shall cease at 11:59 p.m. on the day before the fifth
(5th) anniversary of the date hereof, subject to earlier termination as provided
in this Agreement, herein. Except as may otherwise be provided options granted
hereunder may be cumulative and exercised as follows: TO BE DETERMINED ON AN
OPTIONEE BY OPTIONEE BASIS.

              During the Period                       Optionee May Purchase
              -----------------                       ---------------------
      On or before ___________________, 19__             0% of the Shares

      After __________________, 19__, but
        before________________, 19__                    20% of the Shares

      After ___________________, 19__, but
        before _______________, 19__                    40% of the Shares

      After __________________, 19__, but
        before________________, 19__                    60% of the Shares

      After __________________, 19__, but
        before________________, 19__                    80% of the Shares

      After __________________, 19__, but
        before________________, 19__                   100% of the Shares

The purchase price of the Shares as to which the Option shall be exercised shall
be paid in full at the time of exercise (i) in cash or by certified check or by
bank draft; (ii) subject to any legal restrictions on the acquisition or
purchase of such shares by the Company and with the prior written consent and
approval of the Company, by the delivery of shares of Common Stock of the
Company which shall be deemed to have a value to the Company equal to the
aggregate fair market value of such shares determined in accordance with Section
5 of the Plan; (iii) by the issuance of a Promissory Note in a form acceptable
to the Administrator, or with such consent and approval, any combination of (i),
(ii) or (iii) above. Except as provided Paragraph 5 hereof, the Option may not
be exercised at any time unless the Optionee shall have been continuously, from
the date hereof to the date of the exercise of the Option, an employee of the
Company, its parent, if any, or of one or more of its subsidiaries or a
corporation or a parent or subsidiary of a corporation issuing or assuming an
option to which Section 425(a) of the Internal Revenue Code of 1986, as amended,
applies (collectively the "Affiliates"). The holder of the Option shall not have
any of the rights of a shareholder with respect to the shares covered by the
Option as to any shares of Common Stock not actually issued and delivered to
Optionee.

                                      -2-
<PAGE>   26

      4.    Nontransferability.

      The Option Shall not be transferable otherwise than by will or the laws of
descent and distribution, and the option may be exercised, during the lifetime
of the Optionee, only by optionee. More particularly (but without limiting the
generality of the foregoing), the Option may not be assigned, transferred
(except as provided in Paragraph 6 hereof), pledged or hypothecated in any way,
shall not be assignable by operation of law and shall not be subject to
execution, attachment or similar process. Any attempted assignment, transfer,
pledge, hypothecation or other disposition of the option contrary to the
provisions hereof, and the levy of any execution, attachment or similar process
upon the Option, shall be null and void and without effect.

      5.     Termination of Employment.

      In the event that the Optionee shall cease to be employed by the Company,
or a parent or subsidiary of the Company, or a corporation or a parent or
subsidiary of a corporation issuing or assuming an option to which Section
425(a) of the Internal Revenue Code of 1986, as amended, applies, for any reason
whatsoever, other than by reason of death or disability, this option shall
terminate immediately; provided, however, that the Optionee shall have the right
to exercise this Option at any time within three (3) months after such
cessation, but in no event later than the date of expiration of the option
period, but the number of Shares purchasable upon such exercise of the Option
shall not in any case exceed the number which would have been purchasable if the
Optionee had exercised the option an the date of such cessation. If the Optionee
shall become disabled (within the meaning of Section 22(e)(3) of the Internal
Revenue Code of 1986, as amended) and shall not have fully exercised his
options granted pursuant to the Plan, all of such options, whether or not
otherwise exercisable, may be exercised at any time within one (1) year after
the Optionee's cessation of employment as a result of such disability but in
any event no later than the date of expiration of the option period, by the
Optionee. If the Optionee shall die while an employee of the Company, or a
parent or subsidiary of the Company, Optionee's estate, personal representative
or beneficiary shall have the right to exercise all of the shares subject to
this option, whether or not they would otherwise have been purchasable if the
Optionee's death had not occurred, at any time within one (1) year from the date
of Optionee's death, but in no event later than the date of expiration of the
option period.

        6.   Other Expirations.

      In addition to any other event causing an expiration or termination of
this Option, this Option shall expire and all rights to purchase Shares shall
cease (to the extent not

                                      -3-
<PAGE>   27

theretofore terminated or expired as herein provided) upon the effective date of
the dissolution or liquidation of the Company or upon a merger, consolidation,
acquisition of property or shares, separation or reorganization of the Company
with one or more entities, corporate or otherwise, as a result of which the
company is not the surviving entity, or if the Company is the surviving entity
and the ownership of the outstanding capital stock of the Company following the
transaction changes by 50% or more as a result of such transaction, or of a sale
of substantially all of the property or shares of the Company to another entity,
corporate or otherwise; provided, however, that the Company may, in its
discretion, and immediately prior to any such transaction, cause a new option to
be substituted for this Option or cause this Option to be assumed by an employer
entity or a parent or subsidiary of such entity; and such new option shall apply
to all shares issued in addition to or substitution, replacement or modification
of the shares theretofore covered by such option; provided that,

            (1)   the excess of the aggregate fair market value of the shares
      subject to the option immediately after the substitution or assumption
      over the aggregate option price of such shares shall not be more than the
      excess of the aggregate fair market value of all shares subject to the
      option immediately before such substitution or assumption over the
      aggregate option price of such shares; and

            (2)   the new option or the assumption of the existing option shall
      not give the Optionee, additional benefits which he did not have under the
      old option or prior to such assumption; and

            (3)   an appropriate adjustment of the original option price shall
      be made among original shares subject to the option and any additional
      shares or shares issued in substitution, replacement or modification
      thereof.

If no provision is made for the continuance of the option plan and the
assumption of this Option, or the substitution for this Option of new options as
hereinabove provided, then the Company shall cause written notice to be given to
the Optionee of the proposed transaction not less than thirty (30) days prior to
the anticipated effective date thereof, and this Option, if not already
exercisable, shall thereupon become immediately exercisable and the Optionee
shall have the right to exercise this Option at any time prior to the effective
date of the termination of the option plan or the proposed transaction.

        7.   Adjustments.

      The number and class of shares subject to this Option, and the purchase
price per share (but not the total purchase price), and the minimum number of
shares as to which this Option may be exercised at any one time, shall all be

                                      -4-
<PAGE>   28

proportionately adjusted in the event of any change or increase or decrease in
the number of issued shares of Common Stock in the Company, without receipt of
consideration by the Company, which result from a split-up or consolidation of
shares, payment of a share dividend (in excess of two percent (2%)), a
recapitalization, combination of shares or other like capital adjustment, so
that, upon exercise of this Option, the Optionee shall receive the number and
class of shares Optionee would have received had Optionee been the holder of the
number of shares of Common Stock in the Company, for which this Option is being
exercised, on the date of such change or increase or decrease in the number of
issued shares of Common Stock in the Company. Subject to any required action by
its shareholders, if the Company shall be a surviving entity in any
reorganization, merger or consolidation, this Option shall be proportionately
adjusted so as to apply to the securities to which the holder of the number of
shares of Common Stock in the Company subject to this option would have been
entitled. Adjustments under this paragraph shall be made by the Board of
Directors whose determination with respect thereto shall be final and
conclusive. No fractional share shall be issued under this Option or upon any
such adjustment.

      8.    Method of Exercising Option.

      Subject to the terms and conditions of this option Agreement, this Option
may be exercised by written notice to the Company, at its principal office in
the State of California, which presently is located at 26931 Diamond, Mission
Viejo, California 92691. Such notice shall state the election to exercise the
Option and the number of shares in respect of which it is being exercised and
shall be signed by the person or persons so exercising the Option. Such notice
shall be accompanied by payment in cash, certified check, bank draft, or,
subject to the limitations and with the prior approval required under Section 3
above, by Promissory Note or certificates for shares of the Common Stock of the
Company equal to at the time of exercise, in the aggregate, the full purchase
price of such shares, and the Company shall deliver a certificate or
certificates representing the shares subject to such exercise as soon as
practicable after the notice shall be received. The certificate or certificates
for the shares as to which the Option shall have been so exercised shall be
registered in the name of the person or persons so exercising the Option and
shall be delivered as provided above to or upon the written order of the person
or persons exercising the Option. In the event the Option shall be exercised by
any person or persons other than the Optionee in accordance with the terms
hereof, such notice shall be accompanied by appropriate proof of the right of
such person or persons to exercise the Option. All shares that shall be
purchased upon the exercise of the Option as provided herein shall be fully paid
and nonassessable. The holder of this Option shall not be

                                      -5-
<PAGE>   29

entitled to the privileges of share ownership as to any shares of Common Stock
not actually issued and delivered to Optionee. The Optionee hereby certifies
that all shares of Common Stock in the Company purchased or to be purchased by
Optionee pursuant to the exercise of this Option are being or are to be acquired
by Optionee for investment and not with a view to the distribution thereof. In
addition, the person exercising the Option shall execute and deliver to the
Company with the notice provided for above an investment letter in the form
attached hereto as Exhibit A.

      9.    No Agreement to Employ.

      Nothing in this Agreement shall be construed to constitute or be evidence
of any agreement or understanding, express or implied, on the part of the
Company to employ or retain Optionee for any specific period of time.

      10.   General.

            The Company shall at all times during the term of the option reserve
and keep available such number of shares of Common Stock as will be sufficient
to satisfy the requirements of this Option Agreement, shall pay all original
issue and transfer taxes with respect to the issue and transfer of shares
pursuant hereto and all other fees and expenses necessarily incurred by the
Company in connection therewith, and will from time to time use its best efforts
to comply with all laws and regulations, which, in the opinion of counsel for
the Company, shall be applicable thereto.

      IN WITNESS WHEREOF, the Company has caused this option Agreement to be
duly executed by its officers thereunto duly authorized, and the Optionee has
hereunto set his hand, all as of the day and year first above written.

                                          VITAL SIGNALS, INCORPORATED, a
                                          California corporation

          "Company"                       By:
                                             -----------------------------------
                                                                ,
                                             -------------------  --------------

          "Optionee"
                                             -----------------------------------
                                                                ,
                                             -------------------  --------------

                                      -6-
<PAGE>   30
                                                       NQSO-__________________

                   NONQUALIFIED COMMON STOCK OPTION AGREEMENT

      THIS NONQUALIFIED COMMON STOCK OPTION AGREEMENT (the "Agreement"), made
this ________ day of ___________________, 19__, between VITAL SIGNALS,
INCORPORATED, a California corporation (hereinafter referred to as the
"Company"), and ________________, an employee of the Company, its parent or one
or more of its subsidiaries, or a director or any (hereinafter referred to as
the ad with reference to the following fact:

                                 R E C I T A L:

      The Company desires, by affording the Optionee an opportunity to purchase
shares of common Stock, no par value, in the Company (hereinafter called
"Shares"), as hereinafter provided, to carry out the purpose of the "Incentive
Stock option, Nonqualified Stock option and Restricted Stock Purchase Plan-1989"
(the "Plan").

      NOW, THEREFORE, IN CONSIDERATION of the mutual covenants hereinafter set
forth, and for good and valuable consideration, the parties hereto have agreed,
and do hereby agree, as follows:

        1.   Grant of Option.

      The Company hereby irrevocably grants to the optionee the right and option
(hereinafter called the "Option") to purchase all or any part of an aggregate of
____________ Shares (such number being subject to adjustment as provided in
Paragraph 7 hereof) on the terms and Conditions herein set forth. The Option
granted herein is a "nonqualified option" within the meaning of the Plan.

        2.   Purchase Price.

      The purchase price of the Shares covered by the Option shall be $_____ per
share.

        3.   Term of Option.

      The term of the Option shall commence on the date hereof and all rights to
purchase shares hereunder shall cease at 11:59 p.m. on the day before the fifth
(5th) anniversary of the date hereof, subject to earlier termination as provided
herein. Except as may otherwise be provided in this Agreement,

                                    Exhibit B

<PAGE>   31

options granted hereunder  may be cumulative and exercised as
follows:       TO BE DETERMINED ON AN OPTION BY OPTION BASIS.

               During the Period:                   Optionee May Purchase:
               ------------------                   ---------------------

      On or before ___________________, 19__             0% of the Shares

      After __________________, 19__, but
        before________________, 19__                    20% of the Shares

      After ___________________, 19__, but
        before _______________, 19__                    40% of the Shares

      After __________________, 19__, but
        before________________, 19__                    60% of the Shares

      After __________________, 19__, but
        before________________, 19__                    80% of the Shares

      After __________________, 19__, but
        before________________, 19__                   100% of the Shares

      The purchase price of the Shares as to which the Option shall be exercised
shall be paid in full at the time of exercise (i) in cash, or by certified check
or by bank draft; (ii) subject to any legal restrictions on the acquisition or
purchase of its shares by the Company and with the prior written consent and
approval of the Company, by the delivery of shares of Common Stock of the
Company which shall be deemed to have a value to the Company equal to the
aggregate fair market value of such shares determined in accordance with Section
5 of the Plan; or (iii) any combination of (i) or (ii) above. Except as provided
in Paragraph 5 hereof, the Option may not be exercised at any time unless (i) if
the Optionee is an employee of the Company, the Optionee shall have been
continuously, from the date hereof to the date of the exercise of the Option, an
employee of the Company, its parent, if any, or of one or more of its
subsidiaries or a corporation or a parent or subsidiary of a corporation issuing
or assuming an option to which Section 425(a) of the Internal Revenue Code of
1986, as amended, applies (collectively the "Affiliates"); or (ii) if the
Optionee is a director of the Company, the Optionee shall have been
continuously, from the date hereof to the date of the exercise of the Option, a
director of the Company, or its Affiliates. The holder of the Option shall not
have any of the rights of a shareholder with respect to the shares covered by
the Option as to any shares of Common Stock not actually issued and delivered to
Optionee.

      4.    Nontransferability.

      The Option shall not be transferable otherwise than by will or the laws of
descent and distribution, and the Option may be exercised, during the lifetime
of the Optionee, only by

                                      -2-
<PAGE>   32

Optionee. More particularly (but without limiting the generality of the
foregoing), the Option may not be assigned, transferred (except as provided in
Paragraph 5 hereof), pledged or hypothecated in any way, shall not be assignable
by operation of law and shall not be subject to execution, attachment or similar
process. Any attempted assignment, transfer, pledge, hypothecation or other
disposition of the option contrary to the provisions hereof, and the levy of any
execution, attachment or similar process upon the Option, shall be null and void
and without effect.

      5.    Termination of Employment or Status as a Director or Adviser.

      In the event that the optionee is an employee of the Company and the
Optionee shall cease to be employed by the Company, or its Affiliates, or in the
event the Optionee is a director or advisor of the Company and ceases to be a
director or advisor of the Company or its Affiliates, for any reason whatsoever,
other than by reason of death or disability, this Option shall terminate
immediately; provided, however, that the Optionee shall have the right to
exercise this Option at any time within three (3) months after such cessation of
employment or status as a director or advisor, but in no event later than the
date of expiration of the option period, but the number of Shares purchasable
upon such exercise of the Option shall not in any case exceed the number which
would have been purchasable if the Optionee had exercised the Option on the date
of such cessation. If the Optionee shall become disabled (within the meaning of
Section 22(e)(3) of the Internal Revenue Code of 1986, as amended) and shall not
have fully exercised his options granted pursuant to the Plan, all of such
options, whether or not otherwise exercisable, may be exercised at any time
within one (1) year after the Optionee's cessation of employment or status as a
director or advisor as a result of such disability but in any event no later
than the date of expiration of the option period, by the Optionee. If the
Optionee shall die while an employee, director or advisor of the Company, or its
Affiliates, Optionee's estate, personal representative or beneficiary shall have
the right to exercise all of the shares subject to this Option, whether or not
they would otherwise have been purchasable if the Optionee's death had not
occurred, at any time within one (1) year from the date of Optionee's death, but
in no event later than the date of expiration of the option period.

      6.    Other Expirations.

      In addition to any other event causing an expiration or termination of
this Option, this Option shall expire and all rights to purchase Shares shall
cease (to the extent not theretofore terminated or expired as herein provided)
upon the effective date of the dissolution or liquidation of the Company

                                      -3-
<PAGE>   33

or upon a merger, consolidation, acquisition of property or shares, separation
or reorganization of the Company with one or more entities, corporate or
otherwise, as a result of which the Company is not the surviving entity, or if
the Company is the surviving entity and the ownership of the outstanding
capital stock of the Company following the transaction changes by 50% or more
as a result of such transaction, or of a sale of substantially all of the
property or shares of the Company to another entity, corporate or otherwise;
provided, however, that the Company may, in its discretion, and immediately
prior to any such transaction, cause a new option to be substituted for this
Option or cause this Option to be assumed by an employer entity or a parent or
subsidiary of such entity; and such now option shall apply to all shares issued
in addition to or substitution, replacement or modification of the shares
theretofore covered by such option; provided that.

            (1)   the excess of the aggregate fair market value of the shares
      subject to the option immediately after the substitution or assumption
      over the aggregate option price of such shares shall not be more than the
      excess of the aggregate fair market value of all shares subject to the
      option immediately before such substitution or assumption over the
      aggregate option price of such shares; and

            (2)   the new option or the assumption of the existing option shall
      not give the Optionee additional benefits which he did not have under the
      old option or prior to such assumption; and

            (3)   an appropriate adjustment of the original option price shall
      be made among original shares subject to the option and any additional
      shares or shares issued in substitution, replacement or modification
      thereof.

If no provision is made for the continuance of the Plan and the assumption of
this Option, or the substitution of this Option of new options as hereinabove
provided, then the Company shall cause written notice to be given to the
Optionee of the proposed transaction not less than thirty (30) days prior to the
anticipated effective date thereof, and this Option, if not already exercisable,
shall thereupon become immediately exercisable and the Optionee shall have the
right to exercise this Option at any time prior to the effective date of the
termination of the option plan or the proposed transaction.

      7.    Adjustments.

      The number and class of shares subject to this Option, and the purchase
price per share (but not the total purchase price), and the minimum number of
shares as to which this Option may be exercised at any one time, shall all be

                                      -4-
<PAGE>   34

proportionately adjusted in the event of any change or increase or decrease in
the number of issued shares Of Common Stock in the Company without receipt of
consideration by the Company, which result from a split-up or consolidation of
shares, payment of a share dividend (in excess of two percent (2%)), a
recapitalization, combination of shares or other like capital adjustment, so
that, upon exercise of this Option, the Optionee shall receive the number and
class of shares Optionee would have received had Optionee been the holder of the
number of shares of Common Stock in the Company, for which this Option is being
exercised, on the date of such change or increase or decrease in the number of
issued shares of Common Stock in the company. Subject to any required action by
its shareholders, if the Company shall be a surviving entity in any
reorganization, merger or consolidation, this Option shall be proportionately
adjusted so as to apply to the securities to which the holder of the number of
shares of Common Stock in the company subject to this Option would have been
entitled. Adjustments under this paragraph shall be made by the Board of
Directors whose determination with respect thereto shall be final and
conclusive. No fractional share shall be issued under this Option or upon any
such adjustment.

      8.    Method of Exercising Option.

      Subject to the terms and conditions of this Nonqualified Common Stock
option Agreement, this Option may be exercised by written notice to the Company,
at its principal office in the State of California, which presently is located
at 26931 Diamond, Mission, Viejo, California 92691. Such notice shall state the
election to exercise the Option and the number of shares in respect of which it
is being exercised and shall be signed by the person or persons so exercising
the option. Such notice shall be accompanied by (i) payment in cash, certified
check, bank draft or certificates for shares of the Common Stock of the Company
equal to, in the aggregate, the full purchase price of such shares, and (ii)
payment in cash, certified check or bank draft of any payroll withholding taxes
resulting from the exercise, as determined by the Company. The Company shall
deliver a certificate or certificates representing the shares subject to such
exercise as soon as practicable after the notice shall be received. The
certificate or certificates for the shares as to which the Option shall have
been so exercised shall be registered in the name of the person or persons so
exercising the Option and shall be delivered as provided above to or upon the
written order of the person or persons exercising the Option. In the event the
Option shall be exercised by any person or persons other than the Optionee in
accordance with the terms hereof, such notice shall be accompanied by
appropriate proof of the right of such person or persons to exercise the Option.
All shares that shall be purchased upon the exercise of the Option

                                      -5-
<PAGE>   35

as provided herein shall be fully paid and nonassessable. The holder of this
Option shall not be entitled to the privileges of share ownership as to any
shares of Common Stock not actually issued and delivered to Optionee. The
Optionee hereby certifies that all shares of Common Stock in the Company
purchased or to be purchased by Optionee, pursuant to the exercise of this
Option are being or are to be acquired by optionee for investment and not with a
view to the distribution thereof. In addition, the person exercising the Option
shall execute and deliver to the company with the notice provided for above an
investment letter in the form attached hereto as Exhibit A.

      9.    No Agreement to Employ.

      Nothing in this Agreement shall be construed to constitute or be evidence
of any agreement or understanding, express or implied, on the part of the
Company to employ or retain Optionee for any specific period of time.

      10.   General.

      The Company shall at all times during the term of the Option reserve and
keep available such number of shares of Common Stock as will be sufficient to
satisfy the requirements of this Nonqualified Common Stock Option Agreement,
shall pay all original issue and transfer taxes with respect to the issue and
transfer of shares pursuant hereto and all other fees and expenses necessarily
incurred by the Company in connection therewith, and will from time to time use
its best efforts to comply with all laws and regulations, which, in the opinion
of counsel for the Company, shall be applicable thereto.

      IN WITNESS WHEREOF, the Company has caused this Nonqualified Common Stock
Option Agreement to be duly executed by its officers thereunto duly authorized,
and the Optionee has hereunto set his hand, all as of the day and year first
above written.

                                     VITAL SIGNALS, INCORPORATED,
                                     a California corporation

                                     By:
                                        ---------------------------------------
                                                       "Company"

                                     -------------------------------------------
                                                       "Optionee"

                                      -6-
<PAGE>   36

                                   EXHIBIT A

                        TO NONQUALIFIED OPTION AGREEMENT

Vital Signals, Incorporated
26931 Diamond
Mission Viejo, California 92691

Gentlemen:

      1.    (a) In connection with the acquisition of ______ shares of the no
par value common stock of VITAL SIGNALS, INCORPORATED, a California corporation
(the "Company"), by the undersigned, the undersigned Presents that the shares
which the undersigned is acquiring are being acquired for investment and not
with a view to the sale or distribution of any part thereof, and that the
undersigned has no present intent of selling or otherwise distributing the same.

            You have advised the undersigned that the shares have not been
registered under the Securities Act of 1933, as amended (the "Act"), as the
offering of the shares is to be effected pursuant to an exemption from the
registration provisions of such Act, and, in this connection, you are relying in
part on the representations of the undersigned set forth herein.

            Without in any way limiting the representations set forth above, the
undersigned further agrees in no event to make any dispositions of all or any
part of said shares unless and until (i) the undersigned shall have notified you
of the proposed disposition; (ii) the undersigned shall have furnished you with
an opinion of Counsel to the effect that such disposition will not require
registration of such shares under the Act, and (iii) such opinion of counsel
shall have been concurred in by the Company's counsel and the Company shall have
advised you of such concurrence.

            (b) The undersigned acknowledges receipt of all information as the
undersigned deems necessary and appropriate to enable the undersigned to
evaluate the financial risk inherent in acquiring said shares and acknowledges
receipt of satisfactory and complete information covering the business and
financial condition of the Company, including the opportunity to obtain
information regarding the Company's financial status, in response to all
inquiries in respect thereof.

                                       A-1

<PAGE>   37

      2.    The undersigned understands and agrees that the certificate
evidencing said shares will bear the following legend:

                THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
                REGISTERED UNDET THE SECURITIES ACT OF 1933; THEY HAVE BEEN
                ACQUIRED BY THE HOLDER FOR INVESTMENT AND MAY NOT BE PLEDGED,
                HYPOTHECATED, SOLD TRANSFERED OR, OTHERWISE DISPOSED OF EXCEPT
                AS MAY BE AUTHORIZED UNDER THE SECURITIES ACT OF 1933, AND THE
                RULES AND REGULATIONS PROMULGATED THERE UNDER.

      3.    (a) The undersigned recognizes that said shares are unregistered and
must by held indefinitely unless they are subsequently registered under the Act
or an exemption from such registration is available, and further recognizes that
you are under no obligation to register said shares or to comply with any
exemption from such registration.

            (b)   The undersigned understands that Rule 144 under the Act does
not presently apply and may never apply to the Company's securities because the
Company does not now, and may never, file reports required by the Securities
Exchange Act of 1934, as amended ("Exchange Act"), and has not made, and may
never make, publicly available the information required by Rule 15c2-11 of the
Exchange Act. Furthermore, if Rule 144 were available, the undersigned
understands that sales of securities made in reliance thereof could be made only
in certain limited amounts, after certain holding periods and only when there
was available specified current public information, all in accordance with the
terms and conditions of said Rule. The undersigned understands that, in the case
of securities to which said Rule is not applicable, compliance with some other
exemption under the Act will be required.

 Dated:
       -----------------------------
                                        By:
                                           ------------------------------------

                                     A-2

<PAGE>   38

                                                                  RSP-__________

                   RESTRICTED COMMON STOCK PURCHASE AGREEMENT

      THIS RESTRICTED COMMON STOCK PURCHASE AGREEMENT (the "Agreement") is
entered into this _______ day of ____________, 19__, by and between VITAL
SIGNALS, INCORPORATED, a California corporation (the "Company"), and
____________________, an employee, officer, member of the Board of Directors of
or advisor to Company ("Purchaser").

                                R E C I T A L S:
                                - - - - - - - -

      A.    Purchaser commenced employment with or was elected as a member of
the Board of Directors of the Company or became an advisor to the Company
("employment status" on, ____________ 19__, and in such capacity is key to the
future success of the Company.

      B.    The Company desires, by affording Purchaser an opportunity to
purchase shares of Common Stock of the Company (hereinafter called "shares"), as
hereinafter provided, to carry out the purpose of the "Incentive Stock Option,
Nonqualified Stock Option and Restricted Stock Purchase Plan -- 1989" (the
"Plan").

                               A G R E E M E N T:
                               - - - - - - - - -

      NOW, THEREFORE, in consideration of the mutual covenants, warranties and
representations contained herein, the parties hereto agree as follows:

      1.    Purchase and Sale of Shares.

      Company hereby issues to Purchaser and Purchaser hereby purchases from
Company, _____ shares of authorized but unissued Common Stock, no par value, of
the Company (the "Shares") for a purchase price of $ _____________ per share, or
$_____________ in the aggregate. The purchase price is payable as follows:

            (a)   By delivery of cash, by check in the amount of $____________;
      and/or

                                   Exhibit C
<PAGE>   39
            (b)   By delivery of a promissory note in the principal amount of
      $_________________, payable to the Company, bearing interest from the date
      hereof at the rate of ________ percent (___%), substantially in the form
      of the note attached hereto as Exhibit A.

      In the event payment of any portion or all of the purchase price is to be
made by delivery of a promissory note, Purchaser shall deliver to the Company a
pledge of the Shares or other securities or assets which may be listed in the
Pledge Agreement dated the date hereof and substantially in the form attached as
Exhibit B. If the note is to be unsecured by the Shares or other collateral, the
Pledge Agreement shall so indicate.

      2.    IRC Section 83(b) Election.

      Purchaser hereby agrees to file the election provided under Section 83(b)
of the Internal Revenue Code of 1986, as amended, within thirty (30) days of the
transfer of the Shares, substantially in the form attached hereto an Exhibit C.
The parties hereto acknowledge and agree that the total fair market value of the
Shares is $_________________. Purchaser agrees that the Company shall have no
duty or responsibility to file said election.

      3.    Stock Rights, Forfeiture Provisions, and Buy-Back.

      3.1   Issuance of Shares. The Shares shall be duly issued and a
certificate or certificates for the Shares are concurrently herewith being
issued in the name of Purchaser. Purchaser shall thereupon be a shareholder with
respect to all the Shares represented by such certificate(s) and shall have all
of the rights of a shareholder with respect to all of the Shares, including the
right to vote the Shares and to receive all dividends and other distributions
paid with respect to the Shares.

            3.2   Repurchase of Shares. The Shares shall be subject to
repurchase and forfeiture under this Section 3.2 pursuant to the following terms
and conditions: TO BE DETERMINED ON AN OPTIONEE BY OPTIONEE BASIS WHICH SHALL IN
ANY EVENT PROVIDE FOR THE FOLLOWING MINIMUM VESTING.

                  3.2.1 Repurchase on Termination of Employment Status. In the
            event that Purchaser ceases to occupy his employment status (the
            "Termination Date") for any reason, including death or permanent
            disability, within three (3) years of the date hereof (the
            "Forfeiture Period"), the Company shall have the option to purchase
            all of the Shares (or the products or proceeds thereof) which were
            issued to Purchaser pursuant to this Agreement in accordance with
            the

                                       -2-

<PAGE>   40
            following vesting schedule: (i) prior to the first anniversary of
            the Employment Date, the Corporation shall have the option to
            purchase 100% of the Shares as unvested shares; (ii) on and after
            the first anniversary of the Employment Date and prior to the second
            anniversary of the Employment Date, the Corporation shall have the
            option to purchase 75% of the Shares as unvested shares and 25% of
            the Shares as vested shares, (iii) on and after the second
            anniversary date of the Employment Date and prior to the third
            anniversary date of the Employment Date, the Corporation shall have
            the option to purchase 50% of the Shares as unvested shares and 50%
            of the Shares as vested shares, and (iv) on and after the third
            anniversary date of the Employment Date, the Corporation shall have
            the option to purchase 100% of the Shares as vested shares.

                  3.2.2 Repurchase on Merger or Sale of Assets. In addition to
            any other event causing an expiration or termination of the option
            of the Company to repurchase any of the Shares, the option of the
            Company to repurchase unvested Shares shall be treated as an option
            to purchase vested shares (meaning that the purchase price to be
            paid for the Shares shall be the fair market value of such shares,
            instead of the initial purchase price) upon the effective date of
            the dissolution or liquidation of the Company, or upon a merger,
            consolidation, acquisition of property or shares, separation or
            reorganization of the Company with one or more entities, corporate
            or otherwise, as a result of which the Company is not the surviving
            entity, or if the Company is the surviving entity and the ownership
            of the outstanding capital stock of the Company following the
            transaction changes by 80% or more as a result of such transaction,
            or a sale of substantially all of the property or shares of the
            Company to another entity, corporate or otherwise; provided,
            however, that the Company may, in its discretion, and immediately
            prior to any such transaction, cause a new Purchase Agreement to be
            substituted for this Agreement, or cause this Agreement to be
            assumed by another entity; and such new Purchase Agreement shall
            apply to all securities issued in addition to or in substitution,
            replacement or modification of the Shares theretofore covered by
            this Agreement, provided that:

                        (1)   The excess of the aggregate fair market value of
                  the Shares and other securities, if any, (or the products or
                  proceeds thereof) subject to the Purchase Agreement
                  immediately after the substitution or assumption over the
                  aggregate

                                       -3-

<PAGE>   41
                  purchase price of such Shares and other securities, if any,
                  shall not be less than the excess of the aggregate fair market
                  value of all Shares Subject to this Purchase Agreement
                  immediately before such substitution or assumption over the
                  aggregate purchase price of such Shares; and

                        (2)   The new Purchase Agreement or the assumption of
                  the existing Purchase Agreement shall not extend any vesting
                  periods or afford Purchaser benefits less favorable in value
                  to Purchaser than those Purchaser would have had under this
                  Purchase Agreement prior to such assumption; and

                        (3)   An appropriate adjustment of the original Purchase
                  Price as defined below shall be made among original Shares
                  subject to the Purchase Agreement and any additional Shares or
                  other securities issued in substitution, replacement or
                  modification thereof.

                  3.2.3 Purchase Price. The purchase price ("Purchase Price")
            for the unvested Shares purchased by the Company pursuant to
            Sections 3.2.1 and 3.2.2 above shall be an amount equal to the
            purchase price paid for the Shares by the Purchaser pursuant to
            Section 1 above and for the vested Shares purchased by the Company
            pursuant to Sections 3.2.1 and 3.2.2 above shall be an amount equal
            to the fair market value of such Shares, as determined by the
            certified public accountants as of September 30 of each year,
            determined within 90 days after such date each year. Such
            determination shall be binding on the Company and the Purchaser
            until the date of the next valuation, or 90 days after September 30
            of the next year, if no valuation is delivered by the certified
            public accountants of the Company. If no valuation is received by
            the Company after 90 days after September 30 of any year, the Board
            of Directors of the Corporation shall determine, in its sole
            discretion, the fair market value of the Shares as of the previous
            September 30, which valuation shall be binding upon the Company and
            the Purchaser until the next annual valuation date.

                  3.2.4 Procedures for Exercise of Purchase Option. For thirty
            (30) days after the Termination Date, the Company shall have the
            right to repurchase all or any part of that portion of the Shares
            specified in Sections 3.2.1 or 3.2.2 by giving Purchaser and/or any
            other person obligated to sell

                                       -4-
<PAGE>   42
            written notice of the number of Shares which the Company desires to
            purchase. The Company shall pay for such Shares by the delivery of
            its check in the aggregate amount of the Purchase Price as provided
            in Section 3.2.3 above, against delivery of the certificate(s)
            representing the portion of the Shares purchased by the Company.

            3.3   Deposit of Shares. In aid of the forfeiture and buy-back
      provisions provided for herein, Purchaser shall, immediately upon receipt
      of the certificate or certificates representing the Shares, deposit the
      certificate or certificates, together with a stock power or other
      instrument of transfer appropriately endorsed in blank, with the Company
      as escrow holder of the certificate(s).

            3.4   Legend. The stock certificate(s) representing the Shares shall
      bear the following legend, in addition to such other legends as may be
      required by law:

            "SALE, TRANSFER OR HYPOTHECATION OF THE SHARES REPRESENTED BY THIS
            CERTIFICATE IS RESTRICTED BY AN AGREEMENT DATED ____________________
            19__, A COPY OF WHICH IS ON FILE AT THE PRINCIPAL OFFICE OF THE
            CORPORATION, AND ALL OF THE PROVISIONS OF WHICH ARE INCORPORATED
            HEREIN."

            3.5   Recapitalization. In the event that, as the result of a stock
      split or stock dividend or combination of shares or any other change, or
      exchange for other securities, by reclassification, or recapitalization of
      the Shares, Purchaser shall be entitled to new or additional or different
      shares of stock or securities, the certificate or certificates for, or
      other evidences of, such new or additional or different shares or
      securities shall be imprinted with the legend provided in Section 3.4, and
      shall be deposited with the Company as escrow holder under the terms and
      conditions provided in Section 3.3 herein, together with a stock power or
      other instrument of transfer appropriately endorsed.

      4.    Transfer of Shares of Stock.

      The Shares shall not be sold, exchanged, transferred, pledged,
hypothecated or otherwise disposed of, shall not be assigned or transferred by
operation of law and shall not be subject to execution, attachment or similar
process without the Prior or written consent of the Company, which may be
withheld by the Company in its sole and absolute discretion, and any attempted
sale or other disposition without such consent shall be null and void. The
Company may impose conditions to the giving of such consent, including, without
limitation, a condition that the proposed transferee execute an agreement
substantially in the form of this Agreement.

                                      -5-
<PAGE>   43

      5.    Shares Free and Clear.

      All Shares purchased by the Company pursuant to this Agreement shall be
delivered by Purchaser free and clear of all claims, liens and encumbrances of
every nature (except the provisions of this Agreement and any conditions
concerning the shares imposed pursuant to the federal or California securities
laws), and the purchaser thereof shall acquire full and complete title and right
to all of the Shares, free and clear of all claims, liens and encumbrances of
every nature (again except for the provisions of this Agreement and such
securities laws).

      6.    Investment Representation and Legend Conditions.

      Purchaser represents and warrants that the Shares are being acquired by
him or her for investment for his or her account and not with a view to
disposition in connection with a resale or other disposition of these Shares or
other securities of the Company. Purchaser shall execute and deliver to the
Company an investment letter in the form of Exhibit D attached hereto.

      7.    No Agreement to Retain in Employment Status.

      Nothing in this Agreement shall be construed to constitute or be evidence
of any agreement or understanding, express or implied, on the part of the
Company or its shareholders to retain Purchaser in his or her employment status
for any specific period of time.

      8.    Severability and Continued Effect.

      If any provisions hereof should be determined to be invalid, the parties
intend that all of the remaining provisions hereof shall continue to be fully
effective.

      9.    Notices.

      Any notice required or permitted hereunder shall be given in writing and
shall be deemed effectively given upon personal delivery or upon deposit in the
United States post office, by registered or certified mail, addressed to a party
at his or her address hereinafter shown below beside his or her signature or at
such other address as such party may designate by ten (10) days' advance written
notice to the other party.

      10.   Governing Law.

      This Agreement is being executed and delivered, and is intended to be
performed, in the State of California, and shall be governed by and construed in
accordance with the laws of the State of California.

                                       -6-

<PAGE>   44

      11.   Captions.

      The captions to the sections, subsections and paragraphs in this Agreement
are inserted for convenience only and shall not affect the construction or
interpretation thereof.

      12.   Attorneys' Fees.

      If any party shall bring an action in law or equity against another to
enforce or interpret any of the terms, covenants and provisions of this
Agreement, the prevailing party in such action shall be entitled to reasonable
attorneys' fees which the other party hereby agrees to pay.

      13.   Entire Agreement.

      This Agreement constitutes the entire agreement between the parties
pertaining to its subject matter and supersedes all prior or contemporaneous
written or oral agreements and understandings of the parties, either express or
implied.

      IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the day and year first above written.

Address:
        ---------------------------     -------------------------------
                                                  "Purchaser"
        ---------------------------

                                        VITAL SIGNALS, INCORPORATED, a
                                        California corporation

                                        By:
                                           -----------------------------------
                                                    "Company"

                                       -7-

<PAGE>   45

                       CONSENT AND RATIFICATION OF SPOUSE

      The undersigned, the spouse of _____________________ ____________________,
a party to the attached Restricted Common Stock Purchase Agreement (the
"Agreement"), dated the __________________ day of ____________________________,
19__, hereby consents to the execution of said Agreement by such party; and
ratifies, approves, confirms and adopts said Agreement, and agrees to be bound
by each and every term and condition thereof as if the undersigned had been a
signatory to said Agreement, with respect to the Shares (as defined in the
Agreement) made the subject of said Agreement in which the undersigned has an
interest, including any community property interest therein.

Dated:
      ----------------------------------

                                            -----------------------------------

<PAGE>   46
                                    EXHIBIT A

                  TO RESTRICTED COMMON STOCK PURCHASE AGREEMENT

                                                                    RSP-______

                                 PROMISSORY NOTE
                     (_______ year, [_________]%* interest)

                                                     _____________________, 19__

                                                     _________, California

                                                                   $____________

      For value received, the undersigned promises to pay to VITAL SIGNALS,
INCORPORATED, a California corporation, (the "Company"), the sum of
_____________________________ Dollars ($_______________) in full by or before
the ______________ anniversary date of the date hereof, together with interest
thereon as hereinafter provided.

      The undersigned shall have the right to prepay said principal amount at
any time in whole or in part without penalty. Simple annual interest at the rate
of ______________ percent (____%) per annum on unpaid principal shall be paid
annually on each anniversary of the date hereof and upon each prepayment of
principal, if any.

      The entire outstanding principal and interest shall be due and payable if
any one or more of the following events shall have occurred:

            (a)   The making by the undersigned of any assignment for the
      benefit of creditors or the filing by or against the undersigned of any
      petition in bankruptcy if such proceedings not be discharged within ninety
      (90) days of any such making or filing.

            (b)   The occurrence of any Termination Date an defined in Section
      3.2.1 of the Restricted Common Stock Purchase Agreement of even date
      herewith between the undersigned and the Company.

      If any installment of principal and/or interest is not paid when due, the
holder hereof may, at its option, declare the entire amount of this note
immediately due and payable.

<PAGE>   47

      All payments hereon shall be credited first to accrued but unpaid
interest, and the balance, if any, shall be credited to principal.

      If legal action is instituted for the collection of note, the undersigned
promises to pay such sum as the Court may adjudge reasonable as attorneys' fees.

      This note is given pursuant to that certain Restricted Common Stock
Purchase Agreement of even date herewith, between the Company and the
undersigned and is subject to all of the terms, rights and remedies set forth
therein.

      This note is secured by a Pledge Agreement of even date herewith between
the Company and the undersigned.

                                            ------------------------------------

------------------

*     A fixed rate of interest is to be determined from time to time by action
of the Board of Directors in accordance with prevailing rates and the Internal
Revenue Service prescribed interest rules.

                                       A-2
<PAGE>   48

                                    EXHIBIT B

                  TO RESTRICTED COMMON STOCK PURCHASE AGREEMENT

                                                                    RSP-_______

                                PLEDGE AGREEMENT

      THIS PLEDGE AGREEMENT ("Agreement") is executed as of this _______________
day of _________________, 19__, between VITAL SIGNALS, INCORPORATED, a
California corporation (the "Company"), and _________________________
("Purchaser").

                              W I T N E S S E T H:
                              - - - - - - - - - -

      For the considerations and undertakings set forth herein, the parties do
hereby agree as follows:

      1. To secure payment to the Company of a promissory note ("Note") in the
face amount of _____________________________ ___________________ Dollars
($_________________), and extensions or renewals thereof, which was executed
concurrently with the execution of this Pledge Agreement pursuant to a
Restricted Common Stock Purchase Agreement of even date herewith between the
Company and Purchaser, ("Stock Purchase Agreement") Purchaser hereby assigns and
grants to the Company a security interest in __________________________________
(__________________) shares ("Shares") of the Common Stock of the Company
acquired under the Stock Purchase Agreement, together with securities (if any)
other than such Shares, all described as follows:

Issuer                  Certificate No.    No. of Shares    Registered Owner
------                  ---------------    -------------    ----------------
Vital Signals
   Incorporated

Purchaser does hereby deposit with the Company, as pledge holder, such
certificates, together with duly executed stock transfer powers.

      2.    Subject to any obligations of Purchaser under the Stock Purchase
Agreement, the Company agrees that within a reasonable time after all or any
portion of the Note is paid by Purchaser, the Company shall release and deliver
to Purchaser

<PAGE>   49

the number of Shares held hereunder for which such payment was received. The
Company, in its discretion, may release portions of the Shares upon periodic
principal payments or deposit of other or additional security under the Note.
All Shares released and delivered to Purchaser shall be free and clear of the
restrictions of this Pledge Agreement.

      3.    Unless and until Purchaser defaults in his performance under the
terms of the Note, the terms of this Pledge Agreement and/or the terms of the
Stock Purchase Agreement, the Shares held by the Company at any time under this
Pledge Agreement shall remain registered in the name of Purchaser on the records
of the Company, and Purchaser may vote the Shares on all corporate questions (if
the same shall be entitled to voting rights) and shall be entitled to receive
all dividends and other amounts accruing as a result of his ownership of the
Shares.

      4.    In the event the Purchaser defaults in the performance of any of the
terms of the Note, this Pledge Agreement or the stock Purchase Agreement, the
Company may exercise any and all rights which it may have under the California
Uniform Commercial Code or any other applicable statute, case, ruling,
regulation or law; subject, however, to all permits, orders, consents, rules and
regulations of the California Commissioner of Corporations and the Securities
and Exchange Commission and the Federal Reserve Board relating hereto, to which
Purchaser agrees to be bound.

      5.    If during the term of this Pledge Agreement the Company should
become a party to any merger, consolidation or other reorganization, this Pledge
Agreement shall be adjusted so as to apply to the securities to which a holder
of the Shares subject to this Pledge Agreement would have been entitled upon
such merger, consolidation or reorganization; and, if during the term of this
Pledge Agreement the Company shall be dissolved or its existence otherwise
terminated, then that portion of the assets and consideration to which a holder
of the Shares subject to this Pledge Agreement would have been entitled in such
transaction shall be the subject matter of this Pledge Agreement for the
remainder of its term. This Section 5 shall in no way limit the right of the
Company to repurchase shares under the Stock Purchase Agreement.

      6.    This Pledge Agreement shall inure to the benefit of and be binding
upon the heirs, executors and administrators of the parties hereto.

                                       B-2

<PAGE>   50

      7.    The rights, powers and remedies given to the Company by this
Agreement shall be in addition to all rights, powers and remedies given to the
Company under the Stock Purchase Agreement or any statute or rule of law. Any
forebearance or failure or delay by the Company in exercising any right, power
or remedy hereunder shall not be deemed to be a waiver of such right, power or
remedy, nor shall any single or partial exercise of any right, power or remedy
preclude the further exercise thereof.

      8.    The Board of Directors or the Stock Committee may demand and receive
payment or additional security if for any reason the collateral hereunder is
insufficient to meet minimum requirements established under federal or state
securities or banking regulations or as may be necessary to bring the Note and
the security into compliance with any such law or regulations. Any failure of
Purchaser to meet any such demand shall be deemed a default under this Pledge
Agreement and under the Note secured hereby.

      IN WITNESS WHEREOF, the parties hereto have executed this Agreement the
day and year first above written.

                                    PURCHASER

                                    ------------------------------------------
                                                   (Signature)

                                    ------------------------------------------

                                    ------------------------------------------
                                                    (Address)

                                   VITAL SIGNALS, INCORPORATED

                                   By:
                                       ---------------------------------------
                                   Its:
                                        --------------------------------------

                                       B-3

<PAGE>   51
                                    EXHIBIT C

                 TO RESTRICTED COMMON STOCK PURCHASE AGREEMENT

                                              ____________________________, 19__

Internal Revenue Service Center
5045 East Butler Avenue
Fresno, California 93888

               Re:    Election Under Section 83(b)
                      of the Internal Revenue Code
Dear Sir or Madam:

      The undersigned performed services in connection with which property was
transferred to the undersigned which at the time of transfer was not
transferable by the undersigned and was subject to a substantial risk of
forfeiture. The undersigned hereby makes this election pursuant to Section 83(b)
of the Internal Revenue Code.

      In connection with this election, the undersigned hereby provides you with
the following information:

      1.    The undersigned's name, address, social security number, and the
taxable year of the person who performed the services are as follows:

               Names and Address:   __________________________________________

                                    __________________________________________

                                    __________________________________________

               Social Security No.: __________________________________________

               Taxable Year:       Calendar Year _____________________________

      2.    A description of the property with respect to which the election is
being made: ____________ shares of Common Stock, no par value, of Vital Signals,
Incorporated.

      3.    The date an which the property was transferred: ___________________.

      4.    A description of the nature of the restrictions to which the
property is subject:___________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_________________________________________________________________.

<PAGE>   52

      5.    The fair market value at the time of transfer (determined without
regard to any restriction other than a restriction which by its terms will never
lapse) of the property with respect to which the election is being made:
$_________ per share, or an aggregate fair market value of $___________.

      6.    The amount paid for such property: $________ per share, or an
aggregate amount paid of $__________.

      There are enclosed herewith two copies of this written statement for
filing. Would you please stamp the third copy enclosed herewith as having been
received and return it to the undersigned in the enclosed, self-addressed,
postage paid envelope.

      The undersigned has also submitted a copy of this statement to the person
for whom the services were performed.

      If you have any questions or comments, or if any additional information is
required, please do not hesitate to contact

                         -------------------------------------

                         -------------------------------------

                                         Very truly yours,

                                         ------------------------

                                      C-2
<PAGE>   53

                                    EXHIBIT D

                  TO RESTRICTED COMMON STOCK PURCHASE AGREEMENT

                                              ____________________________, 19__

Vital Signals, Incorporated

------------------------------

------------------------------

Gentlemen:

      1.    (a) In connection with the acquisition of __________ shares of the
no par value common stock of VITAL SIGNALS, INCORPORATED, a California
corporation (the "Company"), by the undersigned, the undersigned represents that
the shares which the undersigned is acquiring are being acquired for investment
and not with a view to the sale or distribution of any part thereof, and that
the undersigned has no present intent of selling or otherwise distributing the
same.

      You have advised the undersigned that the shares have not been registered
under the Securities Act of 1933, as amended (the "Act"), as the offering of the
shares is to be effected pursuant to an exemption from the registration
provisions of such Act, and, in this connection, you are relying in part on the
representations of the undersigned set forth herein.

      Without in any way limiting the representations set forth above, the
undersigned further agrees in no event to make any disposition of all or any
part of said shares unless and until (i) the undersigned shall have notified you
of the proposed disposition; (ii) the undersigned shall have furnished you with
an opinion of counsel to the effect that such disposition will not require
registration of such shares under the Act, and (iii) such opinion of counsel
shall have been concurred in by the Company's counsel and the Company shall have
advised you of such concurrence.

<PAGE>   54

            (b)   The undersigned acknowledges receipt of all such information
as the undersigned deems necessary and appropriate to enable the undersigned to
evaluate the financial risk inherent in acquiring said shares and acknowledges
receipt of satisfactory and complete information covering the business and
financial condition of the Company, including the opportunity to obtain
information regarding the Company's financial status, in response to all
inquiries in respect thereof.

      2.    The undersigned understands and agrees that the certificate
evidencing said shares will bear the following legend:

             THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
             REGISTERED UNDER THE SECURITIES ACT OF 1933; THEY HAVE BEEN
             ACQUIRED BY THE HOLDER FOR INVESTMENT AND MAY NOT BE PLEDGED,
             HYPOTHECATED, SOLD, TRANSFERRED OR OTHERWISE DISPOSED OF EXCEPT AS
             MAY BE AUTHORIZED UNDER THE SECURITIES ACT OF 1933, AND THE RULES
             AND REGULATIONS PROMULGATED THEREUNDER.

      3.    (a) The undersigned recognizes that said shares are unregistered and
must be held indefinitely unless they are subsequently registered under the Act
or an exemption from such registration is available, and further recognizes that
you are under no obligation to register said shares or to comply with any
exemption from such registration.

            (b)   The undersigned understands that Rule 144 under the Act does
not presently apply and may never apply to the Company's securities because the
Company does not now, and may never, file reports required by the Securities
Exchange Act of 1934, as amended ("Exchange Act"), and has not made, and may
never make, publicly available the information required by Rule 15c2-11 of the
Exchange Act. Furthermore, if Rule 144 were available, the undersigned
understands that sales of securities made in reliance thereof could be made only
in certain limited amounts, after certain holding periods and only when there
was available specified current public information, all in accordance with the
terms and conditions of said Rule. The undersigned understands that, in the case
of securities to which said Rule is not applicable, compliance with some other
exemption under the Act will be required.

Dated:
      -----------------------------
                                       By:
                                          -----------------------------------

                                       D-2<PAGE>   1

                                                                   EXHIBIT 10.15

                               AMENDMENT NO. 1 TO
                INCENTIVE STOCK OPTION, NONQUALIFIED STOCK OPTION
                    AND RESTRICTED STOCK PURCHASE PLAN - 1989

      This Amendment No. 1 (the "Amendment") to the Incentive Stock Option,
Nonqualified Stock Option and Restricted Stock Purchase Plan - 1989 (the "1989
Plan") of Masimo Corporation, a California corporation (formerly Vital Signals,
Incorporated) (the "Company"), is hereby adopted by the Board of Directors of
the Company effective May 4, 1996.

      The 1989 Plan is hereby amended as follows:

      1.    Section 4(a) of the 1989 Plan is amended and restated in its
            entirety as follows:

            "(a) Authority to control and manage the operation and
            administration of the Plan shall be vested in the Board of Directors
            of the Company (the "Board"), which may delegate such
            responsibilities in whole or in part to a committee consisting of
            two (2) or more members of the Board (the "Committee"). Members of
            the Committee may be appointed from time to time by, and shall serve
            at the pleasure of, the Board. As used herein, the term
            "Administrator" means the Board or, with respect to any matter as to
            which responsibility has been delegated to the Committee, the term
            Administrator shall mean the Committee."

      2.    Section 3 of the 1989 Plan is amended to provide for a new Section
            3(c) which reads in its entirety as follows:

            "(c) Limit on Grants. In no event shall any participant in the Plan
            be granted Rights to Purchase or Options in any one calendar year
            pursuant to which the aggregate number of shares of Common Stock
            that may be acquired thereunder exceeds 500,000 shares, after giving
            effect to the Company's one for two reverse stock-split to be
            effected prior to the Company's initial public offering."

                                     Attest:

                                     /s/ BRADLEY R. LANGDALE
                                     ----------------------------------------
                                     Bradley R. Langdale, Secretary

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00014-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00014-of-00352.parquet"}]]