Medical-device company

Guidant

(GDT)

affirmed earnings and revenue estimates Tuesday ahead of a midquarter conference call with analysts.

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Before charges, Indianapolis-based Guidant said it expects to earn 52 cents to 57 cents a share on sales of $910 million to $950 million in the third quarter, and $2.27 to $2.37 a share on sales of $3.65 billion to $3.80 billion in the full year.

Analysts surveyed by Thomson First Call were expecting earnings of 55 cents a share on sales of $924 million in the third quarter, and earnings of $2.33 a share on sales of $3.68 billion in the full year.

Using standard accounting and including the charges, Guidant expects to earn $1.30 to $1.40 a share in the full year.

Guidant also said it plans to buy back $250 million worth of stock to offset dilution caused by stock and option grants, and said it plans a regulatory submission this week in Europe regarding its drug-eluting stent program.