The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 1997
Filed:
Sep. 28, 1994
Applicant:
Inventors:
Robert T Kung, Andover, MA (US);
Robert B Stewart, Ipswich, MA (US);
Meir Rosenberg, Newton, MA (US);
Assignee:
Abiomed R & D, Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ; A61N / ;
U.S. Cl.
CPC ...
606-3 ; 606-8 ; 606-9 ; 606 11 ;
Abstract
A laser welding apparatus and system for surgically bonding tissue together provides a beam of coherent light at a wavelength corresponding to a specific tissue thickness at which full absorption of the laser energy occurs, and adjusts the energy of the laser beam in response to tissue temperature throughout the tissue thickness to prevent the tissue temperature from either exceeding a predetermined limit or varying outside a predetermined range. Preferably, the coherent light beam has a center wavelength of 1.9 .mu.m, and is variable between 1.85 and 1.91 .mu.m.