NEW ENTERPRISE ASSOCIATES VI L P ET AL
SC 13G/A, 1998-02-17
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<PAGE>
 
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13G


                   Under the Securities Exchange Act of 1934

                               (Amendment No. 1)*
                                        

                            Innovasive Devices, Inc.
                            ------------------------
                                (Name of Issuer)

                         Common Stock, $.0001 par value
                         ------------------------------
                         (Title of Class of Securities)

                                    45766K104
                                 ----------------
                                 (CUSIP Number)


*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).
<PAGE>
 

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 2 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      New Enterprise Associates VI, Limited Partnership

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      Delaware Limited Partnership

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863 shares

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      PN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


                               Page 2 of 19 pages

<PAGE>
 

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 3 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      NEA Partners VI, Limited Partnership

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      Delaware Limited Partnership

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863 shares
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      PN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


                               Page 3 of 19 pages

<PAGE>
 

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 4 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      Peter J. Barris

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863 shares
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


                               Page 4 of 19 pages

<PAGE>

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 5 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      Frank A. Bonsal, Jr.

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          0 shares
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          0 shares
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      0 shares

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      0%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 6 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      Nancy L. Dorman

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863 shares
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863 shares
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863 shares

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 7 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      Ronald Kase

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863 shares
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863 shares
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863 shares

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 9 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      C. Richard Kramlich

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863 shares
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863 shares

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 9 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      Arthur J. Marks

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 10 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      Thomas C. McConnell

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            2,500 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             2,500 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      931,363 shares

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!



<PAGE>

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 11 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      John M. Nehra

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!



<PAGE>

- -----------------------                                  ---------------------
  CUSIP NO. 45766K104                   13G                PAGE 12 OF 19 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      
      Charles W. Newhall III

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [_]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4    
      United States

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5   
     NUMBER OF            0 shares
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6
                          928,863
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7    
    REPORTING             0 shares
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          928,863
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9  
      928,863

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      10.2%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      IN

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

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!



<PAGE>
 
Item 1(a).  Name of Issuer:  Innovasive Devices, Inc.
            --------------                           

Item 1(b).  Address of Issuer's Principal Executive Offices:
            ----------------------------------------------- 
            734 Forest Street, Marlborough, MA 01752

Item 2(a).  Names of Persons Filing:  New Enterprise Associates VI, Limited
            -----------------------                                        
            Partnership ("NEA VI"); NEA Partners VI, Limited Partnership ("NEA
            Partners VI"), which is the sole general partner of NEA VI; Peter J.
            Barris ("Barris"), Nancy L. Dorman ("Dorman"), Ronald Kase ("Kase"),
            C. Richard Kramlich ("Kramlich"), Arthur J. Marks ("Marks"), Thomas
            C. McConnell ("McConnell"), John M. Nehra ("Nehra") and Charles W.
            Newhall III ("Newhall") (the "General Partners"); and Frank A.
            Bonsal, Jr. ("Bonsal"). The General Partners are individual general
            partners of NEA Partners VI. The persons named in this paragraph are
            referred to individually herein as a "Reporting Person" and
            collectively as the "Reporting Persons."

Item 2(b).  Address of Principal Business Office or, if None, Residence:  The
            -----------------------------------------------------------      
            address of the principal business office of NEA VI, NEA Partners VI,
            Barris, Bonsal, Dorman, Marks, Nehra and Newhall is New Enterprise
            Associates, 1119 St. Paul Street, Baltimore, Maryland 21202. The
            address of the principal business office of Kase, Kramlich and
            McConnell is New Enterprise Associates, 2490 Sand Hill Road, Menlo
            Park, California 94025.

Item 2(c).  Citizenship:  Each of NEA VI and NEA Partners VI is a limited
            -----------                                                  
            partnership organized under the laws of the State of Delaware. Each
            of the General Partners and Bonsal is a United States citizen.

Item 2(d).  Title of Class of Securities:  Common Stock, $.0001 par value
            ----------------------------                                 
            ("Common Stock").

 
Item 2(e).  CUSIP Number:  45766K104
            -------------
 
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 Securities Exchange Act of 1934 (the
                                   "Act").
 
                  (b)        [  ]  Bank as defined in Section 3(a)(6) of the
                                   Act.
                      
                  (c)        [  ]  Insurance Company as defined in Section
                                   3(a)(19) of the Act.
                      
                  (d)        [  ]  Investment Company registered under Section
                                   8 of the Investment Company Act of 1940.
                      
                  (e)        [  ]  Investment Adviser registered under Section
                                   203 of the Investment Advisers Act of 1940.
                
                  (f)        [  ]  Employee Benefit Plan, Pension Fund which is
                                   subject to the provisions of the Employee
                                   Retirement Income Security Act of 1974 or
                                   Endowment Fund; see Rule 13d-1(b)(1)(ii)(F)
                                   of the Act.


                              Page 13 of 19 pages
<PAGE>
 
                  (g)        [  ]  Parent Holding Company, in accordance with
                                   Rule 13d-1(b)(ii)(G) of the Act.

                  (h)        [  ]  Group, in accordance with Rule 13d-
                                   1(b)(1)(ii)(H) of the Act.

                  Not applicable. This Schedule 13G is not being filed pursuant
                  to Rule 13d-1(b) or Rule 13d-2(b).

Item 4.  Ownership.
         --------- 

         (a)   Amount Beneficially Owned: NEA VI is the record owner of 928,863
               shares of Common Stock (the "Record Shares") as of December 31,
               1997. As the sole general partner of NEA VI, NEA Partners VI may
               be deemed to own beneficially the Record Shares. As the general
               partners of NEA Partners VI, the sole general partner of NEA VI,
               each of the General Partners may also be deemed to own
               beneficially the Record Shares. Therefore, NEA VI, NEA Partners
               VI and each of the General Partners may be deemed to own
               beneficially 928,863 shares of Common Stock. McConnell holds an
               option to purchase 2,500 shares of Common Stock, which is
               exercisable within 60 days after December 31, 1997. As a General
               Partner, McConnell may be deemed to own the Record Shares and the
               2,500 shares for a total of 931,363 shares.

         (b)   Percent of Class: Each Reporting Person other than Bonsal: 10.2%.
               Bonsal: 0%. The foregoing percentage is calculated based on the
               9,155,624 shares of Common Stock reported to be outstanding in
               the Quarterly Report on Form 10-Q for the fiscal quarter ended
               September 30, 1997 of Innovasive Devices, Inc., as adjusted
               pursuant to Rule 13d-13(d)(1).

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

               (i)    sole power to vote or to direct the vote: 0 shares for
                      each Reporting Person other than McConnell. 2,500 shares
                      for McConnell.

               (ii)   shared power to vote or to direct the vote: 928,863 shares
                      for each Reporting Person other than Bonsal. 0 shares for
                      Bonsal.

               (iii)  sole power to dispose or to direct the disposition of: 0
                      shares for each Reporting Person other than McConnell.
                      2,500 shares for McConnell.

               (iv)   shared power to dispose or to direct the disposition of:
                      928,863 shares for each Reporting Person other than
                      Bonsal. 0 shares for Bonsal.

         Each Reporting Person disclaims beneficial ownership of any shares of
         Common Stock except for such shares of Common Stock, if any, such
         Reporting Person holds of record.



                              Page 14 of 19 pages
<PAGE>
 
Item 5.  Ownership of Five Percent or Less of a Class.
         -------------------------------------------- 

         Bonsal has ceased to be a beneficial owner of more than 5% of the
outstanding Common Stock of Innovasive Devices, Inc.

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.  The Reporting Persons expressly disclaim membership in
         a "group" as used in Rule 13d-1(b)(ii)(H).

Item 9.  Notice of Dissolution of Group.
         ------------------------------ 

         Not applicable.

Item 10. Certification.
         ------------- 

         Not applicable. This statement on Schedule 13G is not filed pursuant to
         Rule 13d-1(b).


                              Page 15 of 19 pages
<PAGE>
 
                                   SIGNATURE
                                   ---------


   After reasonable inquiry and to the best of its knowledge and belief, each of
the undersigned certifies that the information set forth in this statement is
true, complete and correct.

Date:  February 10, 1998


NEW ENTERPRISE ASSOCIATES VI, LIMITED PARTNERSHIP

By:  NEA PARTNERS VI, LIMITED PARTNERSHIP

   By:                  *
       -------------------------------------
       Charles W. Newhall III
       General Partner


NEA PARTNERS VI, LIMITED PARTNERSHIP

By:                     *
     ---------------------------------------
     Charles W. Newhall III
     General Partner


                  *
- --------------------------------------------
Peter J. Barris


                  *
- --------------------------------------------
Ronald Kase



                  *
- --------------------------------------------
John M. Nehra



                              Page 16 of 19 Pages
<PAGE>
 
                  *
- --------------------------------------------
Frank A. Bonsal, Jr.



                  *
- --------------------------------------------
C. Richard Kramlich



                  *
- --------------------------------------------
Arthur J. Marks



                  *
- --------------------------------------------
Thomas C. McConnell



                  *
- --------------------------------------------
Charles W. Newhall III


                                    *By:  /s/ Nancy L. Dorman
                                        ----------------------------------------
                                        Nancy L. Dorman, in her individual
                                        capacity and as Attorney-in-Fact



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

This Schedule 13G was executed by Nancy L. Dorman pursuant to Powers of Attorney
filed with the Securities and Exchange Commission on February 13, 1992 in
connection with a Schedule 13G for Advanced Interventional Systems Inc. and on
February 13, 1995 in connection with a Schedule 13G for Acuity Imaging, Inc.,
which Powers of Attorney are incorporated herein by reference.



                              Page 17 of 19 Pages
<PAGE>
 
                                                                  Exhibit 1
                                                                  --------- 

                                   AGREEMENT


   Pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934, the
undersigned hereby agree that only one statement containing the information
required by Schedule 13G need be filed with respect to the ownership by each of
the undersigned of shares of Common Stock of Innovasive Devices, Inc.

   EXECUTED as a sealed instrument this 10th day of February, 1998.


NEW ENTERPRISE ASSOCIATES VI, LIMITED PARTNERSHIP

By:  NEA PARTNERS VI, LIMITED PARTNERSHIP

   By:                 *
       ------------------------------------
       Charles W. Newhall III
       General Partner


NEA PARTNERS VI, LIMITED PARTNERSHIP

By:                    *
     --------------------------------------
     Charles W. Newhall III
     General Partner



                  *
- --------------------------------------------
Peter J. Barris



                  *
- --------------------------------------------
Ronald Kase



                  *
- --------------------------------------------
John M. Nehra



                               Page 18 of 19 Pages
<PAGE>
 
                  *
- --------------------------------------------
Frank A. Bonsal, Jr.



                  *
- --------------------------------------------
C. Richard Kramlich



                  *
- --------------------------------------------
Arthur J. Marks



                  *
- --------------------------------------------
Thomas C. McConnell



                  *
- --------------------------------------------
Charles W. Newhall III

                                         *By:  /s/ Nancy L. Dorman
                                             -----------------------------------
                                             Nancy L. Dorman, in her individual
                                             capacity and as Attorney-in-Fact


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

This Agreement was executed by Nancy L. Dorman pursuant to Powers of Attorney
filed with the Securities and Exchange Commission on February 13, 1992 in
connection with a Schedule 13G for Advanced Interventional Systems, Inc. and on
February 13, 1995 in connection with a Schedule 13G for Acuity Imaging, Inc.,
which Powers of Attorney are incorporated herein by reference.



                              Page 19 of 19 Pages


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