UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                                 (RULE 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
                            PURSUANT TO RULE 13d-2(b)

                              (AMENDMENT NO. ___)*

                            Intuitive Surgical, Inc.
                                (Name of Issuer)

                         Common Stock, $0.001 par value
                         (Title of Class of Securities)

                                    46120E107
                                 (CUSIP Number)

                                  July 15, 2002
             (Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

       [ ] Rule 13d-1(b)

       [X] Rule 13d-1(c)

       [ ] Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 or otherwise subject to the liabilities of that section of the Act but
shall be subject to all other provisions of the Act (however, see the Notes).

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CUSIP NO. 46120E107                   13G                  PAGE 2 OF 5 PAGES
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1.    NAMES OF REPORTING PERSONS
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      Chilton Investment Company, Inc.
      13-3667517
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)(a)[ ]
                                                                         (b)[X]
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3.    SEC USE ONLY

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4.    CITIZENSHIP OR PLACE OF ORGANIZATION
      State of Delaware
--------------------------------------------------------------------------------
              5.     SOLE VOTING POWER
                      1,784,469
  NUMBER OF   ------------------------------------------------------------------
   SHARES     6.     SHARED VOTING POWER                                        
BENEFICIALLY         0                                                          
  OWNED BY    ------------------------------------------------------------------
    EACH      7.     SOLE DISPOSITIVE POWER                                     
  REPORTING           1,775,289                                                 
   PERSON     ------------------------------------------------------------------
    WITH      8.     SHARED DISPOSITIVE POWER                                   
                     0                                                          
--------------------------------------------------------------------------------
9.    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      1,784,469
--------------------------------------------------------------------------------
10.   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See
      Instructions)                                                         [ ]
--------------------------------------------------------------------------------
11.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
      4.9%
--------------------------------------------------------------------------------
12.   TYPE OF REPORTING PERSON (See Instructions)
      CO
--------------------------------------------------------------------------------

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CUSIP NO. 46120E107                   13G                  PAGE 3 OF 5 PAGES
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ITEM 1(a).         NAME OF ISSUER.
                   Intuitive Surgical, Inc.

ITEM 1(b).         ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES.
                   950 Kifer Road
                   Sunnyvale, California  94086

ITEM 2(a).         NAMES OF PERSON FILING.
                   Chilton Investment Company, Inc.

ITEM 2(b).         ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE.
                   1266 East Main Street, 7th Floor
                   Stamford, CT 06902

ITEM 2(c).         CITIZENSHIP.
                   State of Delaware

ITEM 2(d).         TITLE OF CLASS OF SECURITIES.
                   Common Stock, $0.001 par value

ITEM 2(e).         CUSIP NUMBER.
                   46120E107

ITEM 3.   IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(b), OR 13d-2(b) OR
          (c), CHECK WHETHER THE PERSON FILING IS A:

    (a) [ ]  Broker or dealer registered under Section 15 of the Exchange Act.

    (b) [ ]  Bank as defined in Section 3(a)(6) of the Exchange Act.

    (c) [ ]  Insurance company as defined in Section 3(a)(19) of the Exchange
             Act.

    (d) [ ]  Investment company registered under Section 8 of the Investment
             Company Act.

    (e) [ ]  An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

    (f) [ ]  An employee benefit plan or endowment fund in accordance with Rule
             13d-1(b)(1)(ii)(F);

    (g) [ ]  A parent holding company or control person in accordance with Rule
             13d-1(b)(1)(ii)(G);

    (h) [ ]  A savings association as defined in Section 3(b) of the Federal
             Deposit Insurance Act;

    (i) [ ]  A church plan that is excluded from the definition of an investment
             company under Section 3(c)(14) of the Investment Company Act;

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CUSIP NO. 46120E107                   13G                  PAGE 4 OF 5 PAGES
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    (j) [ ]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).


ITEM 4.            OWNERSHIP.

                   (a)   Amount beneficially owned:   1,784,469 shares

                   (b)   Percent of class:   4.9%

                   (c)   Number of shares as to which the person has:

                         (i)   Sole power to vote or to direct the
                               vote:                                  1,784,469
                         (ii)  Shared power to vote or to direct the
                               vote:                                          0
                         (iii) Sole power to dispose or to direct the
                               disposition of:                        1,775,289
                         (iv)  Shared power to dispose or to direct
                               the disposition of:                            0

ITEM 5.            OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

                   If this statement is being filed to report the fact that as
                   of the date hereof the reporting person has ceased to be the
                   beneficial owner of more than five percent of the class of
                   securities, check the following [ ].

ITEM 6.            OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
                   PERSON.

                   Inapplicable.

ITEM 7.            IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
                   ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING
                   COMPANY OR CONTROL PERSON.

                   Inapplicable.

ITEM 8.            IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

                   Inapplicable.

ITEM 9.            NOTICE OF DISSOLUTION OF GROUP.

                   Inapplicable.

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CUSIP NO. 46120E107                   13G                  PAGE 5 OF 5 PAGES
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ITEM 10.           CERTIFICATIONS.

    By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were not acquired and are not held for the purpose
of or with the effect of changing or influencing the control of the issuer of
the securities and were not acquired and are not held in connection with or as a
participant in any transaction having that purpose or effect.

                                    SIGNATURE

            After reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true, complete and
correct.

Date: July 25, 2002

                                        CHILTON INVESTMENT COMPANY, INC.


                                    By: /s/ Norman B. Champ III
                                        ---------------------------------------
                                        Name: Norman B. Champ III
                                        Title: Managing Director