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:
Feb. 01, 2000
Filed:
Jun. 30, 1997
Knut Brabrand, Rasta, NO;
Neorad A/S, Oslo, NO;
Abstract
A method and an apparatus for assisting percutaneous computed tomography-guided surgical activity inside a human or animal body, such as withdrawal of body tissue or body liquid sample, withdrawal of excess body liquid, insertion or injection, said method for determining insertion depth, transversal insertion angle and craniocaudal insertion angle for a needle-type surgical instrument to be inserted into the human or animal body from an insertion entry point on a skin surface of said body to a target inside said body. From a first tomography image coordinate values of said entry point are determined, and from said first or a second tomography image coordinate values of said target point are determined. Based on said coordinate values values of said insertion depth, transversal insertion angle and craniocaudal insertion angle are calculated. Said calculated values are applied to an instrument insertion guiding apparatus positioned adjacent said body in no physical contact therewith, said apparatus having a laser which provides a laser beam, manipulating adjustment device on said apparatus to let the laser beam assume the values of transversal insertion angle and craniocaudal insertion angle and to let the laser beam point at the entry point. The instrument with a needle pointed end thereof is located at said entry point and a longitudinal axis of the instrument is aligned with said laser beam, the aligning being made by letting a distal end face of said instrument be pointed at by said laser beam.