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EXHIBIT 23.3
CONSENT OF LEHMAN BROTHERS
We hereby consent to the use of our opinion letter dated October 3, 2000
to the Board of Directors of Thoratec Laboratories Corporation (the "Company")
attached as Exhibit 23.3 to the Company's Joint Proxy Statement/Prospectus on
Form S-4 (the "Prospectus") and to the references to our firm in the Prospectus
under the headings "Summary - Opinions of Thoratec's and Cardiosystems'
Financial Advisors", "The Merger - Background of the Merger", "The Merger -
Thoratec's Reasons for the Merger", "The Merger - Opinion of Thoratec's
Financial Advisor". In giving such consent, we do not admit that we come within
the category of persons whose consent is required under Section 7 of the
Securities Act of 1933, as amended, or the rules and regulations of the
Securities and Exchange Commission thereunder and we do not thereby admit that
we are experts with respect to any part of the Registration Statement under the
meaning of the term "expert" as used in the Securities Act.
LEHMAN BROTHERS INC.
/s/ LEHMAN BROTHERS INC.
New York, New York
November 1, 2000
