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:
May. 07, 1991
Filed:
Oct. 05, 1989
Taoufik Nouri, Oberhofen, CH;
Lasag AG, Thun, CH;
Abstract
The arrangement of this invention concerns a surgical apparatus, in particular for ophthalmological use. In addition to a power beam it includes a beam of coherent visible light (29) which is transformed into at least one elementary beam (30) by means of a homogeneous light guide (21). The guide, which may be an optical fiber, is fixed to a rotating element (33) rotating about an axis (2). When the element rotates the elementary beam generates a luminous tubular beam intended to surround the power beam, the whole then being focussed by a lens to a point terminating a treatment cone with a predetermined vertex angle. The rotating element may include means for varying the diameter of the luminous tubular beam such as a transporter (39) bearing one end of the optical fiber and responding to the operation of a screw (45). The arrangement permits, on one hand to localize a point of treatment in the eye and, if necessary, modification of the vertex angle of the treatment cone.