Medtronic Inc. (MDT) posted fiscal third-quarter net income that soared above a prior-year tally weighed down by charges, while its overall results appeared good enough to ease concerns about problems in key product markets.

The medical-devices giant has been under pressure on multiple fronts lately, with its top business - for implantable defibrillators - ceding share to rivals amid fallout from a 2007 product recall. Medtronic's big business for spinal products also has been challenged by an underperforming acquisition and a regulatory warning that hurt sales of a bone-growth product.

While Medtronic's overall sales in the quarter fell short of Wall Street's target, and the company lowered the upper end of its full-year sales guidance, it also cited signs of stability in the defibrillator and spinal markets amid worries of ongoing deterioration.

The quarter was "not as bad as feared," Leerink Swann analyst Rick Wise said in a note to investors.

Tuesday's report lifted Medtronic's shares, recently up 6.2% to $34.83 despite a rough session for the broader market. BMO Capital Markets analyst Joanne Wuensch called the gain "part relief rally and part short covering," while noting that Medtronic was up against lowered expectations.

For the quarter ended Jan. 23, the Minneapolis company reported net income of $723 million, or 65 cents a share, up from $77 million, or 7 cents, a year earlier.

Excluding mostly legal and acquisition-related charges, earnings rose to 71 cents a share from 63 cents. Analysts surveyed by Thomson Reuters had forecast, on average, earnings of 70 cents a share.

Net sales rose 2.6% to $3.49 billion and included a $110 million negative hit from foreign currency rates. Analyst had targeted sales of $3.51 billion in the quarter.

Medtronic is the biggest player in the roughly $6 billion market for implantable cardioverter defibrillators, or ICDs, which provide shocks to jolt hearts from dangerously abnormal rhythms. The company had been losing share to rivals following the recall in October 2007 of thin wires that connect ICDs to the heart. The "Fidelis" leads were prone to fracturing and potentially causing major problems.

William A. Hawkins, Medtronic's president and chief executive, estimated the Fidelis recall overall probably cost Medtronic four points of ICD market share, mainly in the U.S. But the company estimated on Tuesday that its share did not change in the recent quarter, when measured on a quarter-by-quarter basis.

"We have stabilized and are now back on the offensive," Hawkins said in an interview. He highlighted a series of products the company hopes will help it protect and increase its market share.

Analyst Wuensch said in a note that her analysis indicated Medtronic did lose more market share - its ICD sales sank about 4% to $694 million, while rivals St. Jude Medical Inc. (STJ) and Boston Scientific Corp. (BSX) both posted ICD sales gains in their recent quarters. The periods, though, don't exactly overlap, and there are differences in the number of selling days, Chief Financial Officer Gary Ellis told analysts on the call. Medtronic estimates its world-wide ICD share held stable around 47% to 47.5% on a sequential basis, he said.

Sales in the overall heart-rhythm business, which also includes pacemakers, slipped 4% to $1.17 billion.

 
   Spinal Stability 
 

The market for spinal-repair devices was another big question mark for Medtronic heading into Tuesday's report. Two issues have dogged the company recently, including worse-than-expected performance in the Kyphon business Medtronic acquired in November 2007 and pressure on a bone-graft product called "InFuse."

The Food and Drug Administration issued a notice in July last year regarding complications when the product is used in the neck - it's approved for the lower back - and Medtronic disclosed three months ago that it had received a Department of Justice subpoena looking into so-called "off-label" InFuse usage. Doctors can use products in ways not approved by the FDA, but companies cannot market products for any unapproved uses.

Hawkins said on the call that Kyphon "very candidly has been a bit of a disappointment for us," although he also said that business is stabilizing. Likewise, he said the same about sales of biologic spinal products, which includes InFuse. "We did not see any further incremental contraction" in that business in the quarter, he said.

Medtronic's overall spinal sales rose 3% to $832 million, while biologics sales were little changed.

These are still below overall market growth rates, which implies continued share losses. Hawkins indicated Medtronic's plan over the next couple of years is to get back to growing with the market, if not "getting back into a position where we can actually regain share."

The spinal business is one area within Medtronic that could have some economic vulnerability, as patients could potentially put off surgery, Hawkins said. He also highlighted the diabetes and surgical technologies businesses as having some potential vulnerability, and said in general that he sees elective procedures "as being increasingly impacted."

Among other businesses, sales of cardiovascular products rose 10% to $565 million. Still, U.S. sales of the company's "Endeavor" drug-coated heart stent slipped again in the quarter amid strong competition from more recently approved Abbott Laboratories (ABT) and Boston Scientific stents. Endeavor was approved in the U.S. about a year ago.

Looking ahead to the rest of the fiscal year, which runs through April, Medtronic brought down the top end of its sales guidance and now targets $14.6 billion to $14.7 billion. The company also tightened its expected per-share earnings range to $2.91 to $2.95, which includes two cents of dilution from a recent acquisition.

Analysts had targeted full-year earnings of $2.91 per share on sales of $14.64 billion.

Hawkins also said Tuesday that the company is confident it can grow double-digits per-share earnings over the longer term, which outpaces expected sales growth.

-By Jon Kamp, Dow Jones Newswires; 617-654-6728; jon.kamp@dowjones.com

(Mike Barris and Katherine Wegert contributed to this report.)