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:
Jul. 22, 2003
Filed:
Feb. 11, 1999
Charles C. Negus, Taunton, MA (US);
Robert I. Rudko, Holliston, MA (US);
Stephen J. Linhares, Taunton, MA (US);
Stephen M. Perez, Taunton, MA (US);
PLC Medical Systems, Inc., Franklin, MA (US);
Abstract
A heart-synchronized pulsed laser system includes a laser; means for sensing the contraction and expansion of a beating heart to be synchronized with the laser; means, responsive to the means for sensing, for generating a trigger pulse; means for positioning the leading edge of the trigger pulse; means for positioning the leading edge of the trigger pulse during the contraction and expansion cycle of the heartbeat; means for defining the width of the trigger pulse to occur during the heartbeat cycle; and means responsive to the trigger pulse for firing the laser to strike the beating heart at the time indicated by the trigger pulse position and for the period indicated by the width of the trigger pulse. In addition, the invention feature a handpiece for a medical laser system comprising a barrel for having a passage for transmitting a laser beam and a contacting wall on one end of said barrel including an aperture in communication with the passage, a solid face extending radially outward from the aperture to the periphery of said contacting wall, and a knurled surface on the face for preventing movement of the contacting wall with respect to the heart wall during surgery.