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:
Oct. 15, 2013
Filed:
Jun. 17, 2008
Johann Kindlein, Adendorf, DE;
Evert Hendrik Agterhuis, Loenhout, BE;
Godefridus Hendricus Maria Gubbels, Helmond, NL;
Frank Simonis, Oirschot, NL;
Johann Kindlein, Adendorf, DE;
Evert Hendrik Agterhuis, Loenhout, BE;
Godefridus Hendricus Maria Gubbels, Helmond, NL;
Frank Simonis, Oirschot, NL;
Nucletron B.V., Veenendaal, NL;
Abstract
A miniature X-ray source device for effecting radiation therapy at least comprising a vacuum tube containing a cathode and an anode spaced apart at some distance from each other; emitting means for emitting free electrons from the cathode; electric field generating means for applying during use a high-voltage electric field between the cathode and the anode for accelerating the emitted free electrons towards the anode, as well as an exit window for X-ray radiation being generating at the anode. The present invention provides an improved miniature X-ray source device, that can also properly be used in treating skin cancer and which is easy to handle. The anode is provided with a flat X-ray emitting surface. In particular, the cathode exhibits a concave shaped surface having a center part surrounded by an upright circumferential edge, wherein the center part of the concave shaped surface is provided with an electron emitting material.