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        FORM 4
o Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

(Print or Type Responses)		   UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF
CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,
Section 17(a) of the Public Utility Holding Company Act of 1935 or
Section 30(h) of the Investment Company Act of 1940		  
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1.   Name and Address of Reporting Person*   2.   Issuer Name and Ticker or Trading Symbol   6.   Relationship of Reporting Person(s) to Issuer (Check all applicable)
    Calhoun   Christopher   J.       MacroPore Biosurgery, Inc.         X   Director            10% Owner
 
           
    (Last)   (First)   (Middle)   3.   I.R.S. Identification Number of Reporting Person (voluntary)   4.   Statement for Month/Day/Year       X         Officer
(give title below)		            Other
(specify below)
       6740 Top Gun Street           November 29 2002       Chief Executive Officer/President
 
 
     
(Street)           5.   If Amendment, Date of Original (Month/Day/Year)   7.   Individual or Joint/Group Filing
(Check Applicable Line)
  X       Form filed by One Reporting Person
         Form filed by More than
    San Diego   CA   92121                   One Reporting Person
    (City)   (State)   (Zip)                            
                Table I — Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.   Title of Security
(Instr. 3)		   2.   Transaction Date   2A.   Deemed Execution Date, if any   3.   Transaction Code
(Instr. 8)		   4.   Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		   5.   Amount of Securities Beneficially Owned Following Reported Transaction(s)   6.   Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		   7.   Nature of Indirect Beneficial Ownership
(Instr. 4)
            (Month/Day/Year)   (Month/Day/Year)  
      (Instr. 3 and 4)                
                            Code   V       Amount   (A) or (D)   Price                        
                                                                            
    Common Stock       11-29-02               S           100,000   D   4.18               D            
                                                                            
    Common Stock       11-29-02               S           50,000   D   4.18       500,000       I           (1) By TTMC Investments, Inc.
                                                                            
                                                                            
                                                                            
    Table II — Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1.   Title of Derivative Security
(Instr. 3)		   2.   Conversion or Exercise Price of Derivative Security   3.   Transaction Date
(Month/Day/Year)		   3A.   Deemed Execution Date, if any
(Month/Day/Year)		   4.   Transaction Code
(Instr. 8)		   5.   Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		   6.   Date Exercisable and Expiration Date (Month/Day/Year)
                               
 
                                    Code   V       (A)   (D)       Date
Exercisable		   Expiration Date
                                                                  
                                                                  
                                                                  
                                                                  
                                                                  
                                                                  
                                                                  
7.   Title and Amount of Underlying Securities
(Instr. 3 and 4)		   8.   Price of Derivative Security
(Instr. 5)		   9.   Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		   10.   Ownership Form of Derivative Securities: Direct (D) or Indirect (I) (Instr. 4)   11.   Nature of Indirect Beneficial Ownership
(Instr. 4)
   
                               
    Title   Amount or Number of Shares                                
                                          
                                          
                                          
                                          
                                          
                                          
                                          

Explanation of Responses: (1) These shares are held of record by TTMC Investments, Inc., and Mr. Calhoun has sole voting and investment power with respect to the shares of the Company's common stock held by TTMC Investments, Inc. Mr. Calhoun disclaims beneficial ownership of these securities, except to the extent he has a pecuniary interest in the securities, and this report shall not be deemed an admission that Mr. Calhoun is the beneficial owner of such securities for purposes of section 16 or for any other purpose.

/s/  CHRISTOPHER J. CALHOUN         12/02/02
**Signature of Reporting Person		  
Date

Reminder:
 
Report on a separate line for each class of securities beneficially owned directly or indirectly.

*
 
If the form is filed by more than one reporting person, see Instruction 5(b)(v)

**
 
Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note:
 
File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

http://www.sec.gov/divisions/corpfin/forms/form4.htm
Last update: 09/05/2002