SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. )(1)
ASPECT MEDICAL SYSTEMS, INC.
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(Name of Issuer)
Common Stock, $0.01 par value per share
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(Title or Class of Securities)
045235108
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(CUSIP Number)
December 31, 2002
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(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)
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(1) 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 ("Act") 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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1 NAMES OF REPORTING PERSONS
Boston Scientific Corporation
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
04-2695240
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(A) [ ]
. (B) [ ]
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
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5 SOLE VOTING POWER
3,386,583
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NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 0
OWNED BY ---------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 3,386,583
WITH ---------------------------------------------------
8 SHARED DISPOSITIVE POWER
0
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
3,386,583
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10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[ ]
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
17.5%
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12 TYPE OF REPORTING PERSON*
CO
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*SEE INSTRUCTIONS BEFORE FILLING OUT!
ITEM 1(A). NAME OF ISSUER:
Aspect Medical Systems, Inc.
ITEM 1(B). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
141 Needham Street, Newton, MA 02462-1505
ITEM 2(A). NAME OF PERSON FILING:
Boston Scientific Corporation
ITEM 2(B). ADDRESS OF PRINICIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:
One Boston Scientific Place, Natick, MA 01760-1537
ITEM 2(C). CITIZENSHIP:
Delaware, United States of America
ITEM 2(D). TITLE OF CLASS OF SECURITIES:
Common Stock, par value $0.01 per share, of Aspect Medical
Systems, Inc.
ITEM 2(E). CUSIP NUMBER:
045235108
ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULES 13D-1(B), OR
13D-2(B), CHECK WHETHER THE PERSON FILING IS A:
(a) [ ] Broker or dealer registered under section 15 of the Act
(15 U.S.C. 78o).
(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
(c) [ ] Insurance company as defined in section 3(a)(19) of the Act
(15 U.S.C. 78c).
(d) [ ] Investment company registered under section 8 of the Investment Company
Act of 1940 (15 U.S.C 80a-8).
(e) [ ] An investment adviser in accordance withss.240.13d-1(b)(1)(ii)(E);
(f) [ ] An employee benefit plan or endowment fund in accordance
withss.240.13d-1(b)(1)(ii)(F);
(g) [ ] A parent holding company or control person in accordance
withss.240.13d-1(b)(1)(ii)(G);
(h) [ ] A savings associations as defined in Section 3(b) of the Federal
Deposit Insurance Act (12 U.S.C. 1813);
(i) [ ] A church plan that is excluded from the definition of an investment
company under section 3(c)(14) of the Investment Company Act of 1940
(15 U.S.C.80a-3);
(j) [ ] Group, in accordance withss.240.13d-1(b)(1)(ii)(J).
If this statement is filed pursuant to Rule 13d-1, check this box. [X]
ITEM 4. OWNERSHIP:
(a) Amount beneficially owned: 3,386,583
(b) Percent of class: 17.5%
(c) Number of shares as to which such person has:
(i) Sole Power to vote or to direct the vote: 3,386,583
(ii) Shared power to vote or to direct the vote:0
(iii) Sole power to dispose or to direct the disposition of: 3,386,583
(iv) Shared power to dispose or to direct the disposition of:0
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:
Not applicable
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF
ANOTHER PERSON:
Not applicable
ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
HOLDING COMPANY:
Not applicable
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:
Not applicable .
ITEM 9. NOTICE OF DISSOLUTION OF GROUP:
Not applicable
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.
February 14, 2003
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(Date)
/s/ Lawrence J. Knopf
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Name: Lawrence J. Knopf
Title: Vice President and Assistant
General Counsel