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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 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 * Christoffersen Ralph E   2. Issuer Name and Ticker or Trading Symbol REPLIDYNE INC [RDYN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) MORGENTHALER VENTURES, 4430 ARAPAHOE AVENUE, SUITE 220 3. Date of Earliest Transaction (Month/Day/Year) 07/03/2006 (Street) BOULDER, CO 80303 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 07/03/2006   C   2,095,057 A (1) 2,328,235 (2) I By Morgenthaler Partners VII, L.P. (3)

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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)

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 Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Series A Preferred Stock

$ 0 (4)

07/03/2006

C

2,000,000

(4)

(4)

Common Stock

2,000,000 (4)

(4)

0

I

By Morgenthaler Partners VII, L.P. (3)

Series C Preferred Stock

$ 0 (5)

07/03/2006

C

6,400,000

(5)

(5)

Common Stock

6,400,000 (5)

(5)

0

I

By Morgenthaler Partners VII, L.P. (3)

Series D Preferred Stock

$ 0 (6)

07/03/2006

C

1,874,163

(6)

(6)

Common Stock

1,874,163 (6)

(6)

0

I

By Morgenthaler Partners VII, L.P. (3)

Warrant (right to buy)

$ 1.25

07/03/2006

C

80,001

(7)

(7)

Series C Preferred Stock

80,001 (7)

(7)

0

I

By Morgenthaler Partners VII, L.P. (3)

Warrant (right to buy)

$ 6.13 (8)

07/03/2006

C

16,311

06/27/2006

06/27/2011

Common Stock

16,311 (8)

(7)

16,311

I

By Morgenthaler Partners VII, L.P. (3)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Christoffersen Ralph E MORGENTHALER VENTURES 4430 ARAPAHOE AVENUE, SUITE 220 BOULDER, CO 80303	X

Signatures

/s/ Ralph E. Christoffersen		07/06/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(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).
(1)	The Issuer's preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering.
(2)	Includes 233,178 shares of the Issuer's common stock issued to Morgenthaler Partners VII, L.P. ("MP VII") in satisfaction of accumulated dividends on the Series A Preferred Stock, Series C Preferred Stock and Series D Preferred Stock owned by MP VII.
(3)	The Reporting Person is a member of Morgenthaler Management Partners VII, LLC, the managing general partner of Morgenthaler Partners VII, L.P. As such, the Reporting Person shares voting and investment power over the shares held by Morgenthaler Partners VII, L.P. and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such shares held by Morgenthaler Partners VII, L.P. except to his proportionate pecuniary interest therein.
(4)	These securities automatically converted into 407,830 shares of the Issuer's common stock upon the closing of the Issuer's initial public offering. The conversion of the Series A Preferred Stock gives effect to the Issuer's 1-for-4.904 reverse stock split
(5)	These securities automatically converted into 1,305,057 shares of the Issuer's common stock upon the closing of the Issuer's initial public offering. The conversion of the Series C Preferred Stock gives effect to the Issuer's 1-for-4.904 reverse stock split.
(6)	These securities automatically converted into 382,170 shares of the Issuer's common stock upon the closing of the Issuer's initial public offering. The conversion of the Series D Preferred Stock gives effect to the Issuer's 1-for-4.904 reverse stock split.
(7)	The warrants to purchase shares of Series C Preferred Stock automatically converted into warrants to purchase shares of the Issuer's common stock upon the closing of the Issuer's initial public offering.
(8)	The number of shares and exercise price gives effect to the Issuer's 1-for-4.901 reverse stock split.

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