SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 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 13d-2(b)
                                (Amendment No. )

                            Rita Medical Systems Inc.

                                (Name of Issuer)

                          Common Stock, par value $0.01
                         (Title of Class of Securities)

                                    76774E103
                                 (CUSIP NUMBER)

                                January 23, 2007
-------------------------------------------------------------------------------
             (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)







-------------------------------------------------------------------------------
NAME OF REPORTING PERSONS: Paul J. Glazer
    ---------------------------------------------------------------------------
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                               (a)     |_|
                                                               (b)     |X|
------------------------------------------------------------------------------
SEC USE ONLY
------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION United States of America

-------------------------------------------------------------------------------
  NUMBER OF         SOLE VOTING POWER                                   225,927
  SHARES
 BENEFICIALLY
  OWNED BY
    EACH
  REPORTING
 PERSON WITH
-------------------------------------------------------------------------------
                    SHARED VOTING POWER                                2,422,724
-------------------------------------------------------------------------------
                    SOLE DISPOSITIVE POWER                               225,927
--------------------------------------------------------------------------------
                    SHARED DISPOSITIVE POWER                           2,422,724
--------------------------------------------------------------------------------
     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                                                       2,648,651
--------------------------------------------------------------------------------
     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
--------------------------------------------------------------------------------
     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)                   6.04%
--------------------------------------------------------------------------------
 TYPE OF REPORTING PERSON* IN
--------------------------------------------------------------------------------

                   *SEE INSTRUCTION BEFORE FILLING OUT!


                                      -2-






--------------------------------------------------------------------------------
NAME OF REPORTING PERSONS: Glazer Capital, LLC
     ---------------------------------------------------------------------------
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) 13-4032491
--------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                               (a)     |_|
                                                               (b)     |X|
--------------------------------------------------------------------------------
SEC USE ONLY
--------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION    Delaware

--------------------------------------------------------------------------------
  NUMBER OF         SOLE VOTING POWER                                          0
  SHARES
 BENEFICIALLY
  OWNED BY
    EACH
  REPORTING
 PERSON WITH
--------------------------------------------------------------------------------
                    SHARED VOTING POWER                                2,422,724
--------------------------------------------------------------------------------
                    SOLE DISPOSITIVE POWER                                     0
--------------------------------------------------------------------------------
                    SHARED DISPOSITIVE POWER                           2,422,724
--------------------------------------------------------------------------------
     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                                                       2,422,724
--------------------------------------------------------------------------------
     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
--------------------------------------------------------------------------------
     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)                     5.52%
--------------------------------------------------------------------------------
 TYPE OF REPORTING PERSON* OO
--------------------------------------------------------------------------------

                   *SEE INSTRUCTION BEFORE FILLING OUT!



                                      -3-







Item 1(a).        Name of Issuer:

                           Rita Medical Systems Inc.

Item 1(b).        Address of Issuer's Principal Executive Offices:

                           46421 Landing Parkway
                           Fremont, CA 94538


Item 2(a).        Name of Persons Filing:

                           This Schedule 13G is being filed with respect to
                           shares of Common Stock of the Issuer which are
                           beneficially owned by Paul Glazer and Glazer Capital,
                           LLC ("GCL" and together with Paul Glazer, the
                           "Reporting Persons").

Item 2(b).        Address of Principal Business Office or, if None, Residence:

                   The principal business address of the Reporting Persons is:

                           237 Park Avenue
                           Suite 900
                           New York, New York 10017

Item 2(c).        Citizenship:

                           Mr. Glazer is a citizen of the United States of
                           America. GCL is a Delaware limited liability company.

Item 2(d).        Title of Class of Securities:

                           Common Stock, par value $0.01

Item 2(e).        CUSIP Number:

                           76774E103



                                      -4-



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:        Not Applicable

     (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 Exchange Act;

     (e)  [ ] Investment Adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

     (f)  [ ] Employee  Benefit Plan or Endowment  Fund in accordance  with Rule
          13d-1(b)(1)(ii)(F);

     (g)  [ ] Parent Holding  Company or Control Person in accordance  with Rule
          13d-1(b)(1)(ii)(G);

     (h)  [ ] Saving  Association  as  defined in  Section  3(b) of The  Federal
          Deposit Insurance Act;

     (i)  [ ] Church Plan that is excluded from the  definition of an Investment
          Company under Section 3(c)(14) of the Investment Company Act;

     (j)  [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).




                                                                                              

If this statement is filed pursuant to Sec. 240.13d-1(c), check this box [ x ].

Item 4.           Ownership.

                  (a) Amount beneficially owned:
                                                                                Paul Glazer:     2,648,651
                                                                                GCL:             2,422,724
                  (b) Percent of Class:
                                                                                Paul Glazer:     6.04%
                                                                                GCL:             5.52%

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

                        (i) Sole power to vote or direct the vote:
                                                                                Paul Glazer:     225,927
                                                                                GCL:             0

                        (ii) Shared power to vote or to direct the vote:
                                                                                Paul Glazer:     2,422,724
                                                                                GCL:             2,422,724

                        (iii) Sole power to dispose or direct the disposition of:

                                                                                Paul Glazer:     225,927
                                                                                GCL:             0

                        (iv) Shared power to dispose or to direct the disposition of:

                                                                                Paul Glazer:     2,422,724
                                                                                GCL:             2,422,724


                                      -5-


As calculated in accordance  with Rule 13d-3 of the  Securities  Exchange Act of
1934,  as  amended,Paul J. Glazer beneficially owns 2,648,651 shares of the
Issuer's Common Stock, par value $0.01 ("Common Stock"), representing 6.04% of
the Common  Stock.  Mr. Glazer does not directly own any shares of Common Stock,
but he does indirectly own 2,648,651 shares of Common Stock in his capacity as
(i) the managing member of Paul J. Glazer, LLC, a Delaware limited liability
company,  which  in  turn  serves  as the  general  partner  of  Glazer  Capital
Management,  L.P., a Delaware limited  partnership ("GCM") and (ii) the managing
member of Glazer Capital,  LLC ("Glazer") which in turn serves as the investment
manager of Glazer Offshore Fund, Ltd., a Cayman Islands corporation  ("GOF"). In
addition,  GCL manages on a  discretionary  basis  separate  accounts  for three
unrelated entities that own shares of Common Stock (collectively,  the "Separate
Accounts").  Although GCL does not directly own any shares of Common Stock,  GCL
is deemed to beneficially own the 2,422,724 shares of Common Stock held by GOF
and the Separate Accounts.

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.

                         Each of GCM, GOF and the Separate Accounts has the
                         right to receive dividends and the proceeds from the
                         sale of the shares of Common Stock held by such
                         person.

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.

                         See Exhibit B hereof.

Item 9.         Notice of Dissolution of Group.

                         Not Applicable



                                      -6-




Item 10. Certification.

         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.





                                      -7-





                                    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.

Dated:  February 2, 2007

                                        PAUL J. GLAZER

                                        By:
                                                 --------------------------
                                        Name:    Paul J. Glazer


                                        GLAZER CAPITAL, LLC

                                        By:
                                                 --------------------------
                                        Name:    Paul J. Glazer
                                        Title:   Managing Member



                                      -8-





                                    Exhibit A
                                    ---------

                             Joint Filing Agreement
                             ----------------------


         The undersigned agree that this Schedule 13G, and all amendments
thereto, relating to the Common Stock of Rita Medical Systems Inc. shall be
filed on behalf of the undersigned.



                                       PAUL J. GLAZER

                                       -----------------------------------
                                       Name:    Paul J. Glazer


                                       GLAZER CAPITAL, LLC

                                       By:
                                                --------------------------
                                       Name:    Paul J. Glazer
                                       Title:   Managing Member



                                      -9-







                                    Exhibit B


         Due to the relationships between them, the reporting persons hereunder
may be deemed to constitute a "group" with one another for purposes of Section
13(d)(3) of the Securities Exchange Act of 1934.




                                      -10-