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 * LANCASTER RAYMOND A   2. Issuer Name and Ticker or Trading Symbol STERIS CORP [STE] 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) 5960 HEISLEY ROAD 3. Date of Earliest Transaction (Month/Day/Year) 03/16/2007 (Street) MENTOR, OH 44060 4. If Amendment, Date Original Filed(Month/Day/Year) 03/20/2007 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 Shares, No Par Value 03/16/2007   M   10,000 A $ 19.25 15,712 D   Common Shares, No Par Value 03/16/2007   S   7,500 D $ 25.36 8,212 D   Common Shares, No Par Value 03/16/2007   S   2,400 D $ 25.38 5,812 D   Common Shares, No Par Value 03/16/2007   S   100 D $ 25.39 5,712 D   Common Shares, No Par Value               2,000 I See Footnote Below (1) Common Shares, No Par Value               1,500 I See Footnote Below (2) Common Shares, No Par Value               1,420 I See Footnote Below (3) Common Shares, No Par Value               1,420 I See Footnote Below (4) Common Shares, No Par Value               1,420 I See Footnote Below (5)

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

Director Stock Option Exercise

$ 19.25

03/16/2007

M

10,000

02/01/1998

08/01/2007

Common Shares, No Par Value

10,000

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LANCASTER RAYMOND A 5960 HEISLEY ROAD MENTOR, OH 44060	X

Signatures

Dennis P. Patton, Authorized Representative under Power of Attorney		05/14/2007
**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)	2,000 shares held by Mr. Lancaster's wife. Mr. Lancaster disclaims beneficial ownership of the common shares held by his wife.
(2)	1,500 shares held by Mr. Lancaster's Rollover IRA.
(3)	1,420 shares were gifted by Mr. Lancaster on October 2, 2006 to the Raymond Allen Lancaster irrevocable Demand Trust dtd 10/2/06, FBO Christine A. Lancaster, Betsy Williams Lancaster Trustee. Mr. Lancaster disclaims beneficial ownership of the common shares held in this trust.
(4)	1,420 shares were gifted by Mr. Lancaster on October 2, 2006 to the Raymond Allen Lancaster irrevocable Demand Trust dtd 10/2/06, FBO Sarah F. Lancaster, Betsy Williams Lancaster Trustee. Mr. Lancaster disclaims beneficial ownership of the common shares held in this trust.
(5)	1,420 shares were gifted by Mr. Lancaster on October 2, 2006 to the Raymond Allen Lancaster irrevocable Demand Trust dtd 10/2/06, FBO Barbara J. Lancaster, Betsy Williams Lancaster Trustee. Mr. Lancaster disclaims beneficial ownership of the common shares held in this trust.
Remarks: This amended Form 4 is being filed to reflect the indirect beneficial ownership of an aggregate of 4,260 shares by Mr. Lancaster.  These shares were previously reported as gifted pursuant to a separate Form 4 that was also filed on March 20, 2007.  Because these shares were gifted to trusts for whom Mr. Lancaster's wife serves as trustee, Mr. Lancaster may still be deemed to have indirect beneficial ownership of such shares.

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