Patent EP0860180A2 successfully refreshed from Google Patents.
EP0860180A2
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EP
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Device for delivering localized X-ray radiation to an interior of a body and method of manufacture
Assignee: Medtronic Vascular Inc
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Filing: 1998-02-19
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Granted: —
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Expires: 2018-02-19
Abstract
Abstract Generally, the present invention provides a device for insertion into a body of a subject being treated to deliver localized x-ray radiation, and a method for fabricating such a device. The device includes a cathode structure that has a thin, diamond film as a cathode. The device further comprises a vacuum housing and an anode. A method for fabricating a device for localized x-ray radiation is described which includes the formation of a thin diamond film on a getter at temperatures below an activation temperature of the getter.
Inventors
- 👤 Victor I. Chornenky
- 👤 Michael R. Forman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 03:05
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; H; H01; H01J; H01J35/00; H01J35/32; A61N5/1002; H01J2235/00; H01J2235/20; H01J2235/205
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
A device for insertion into a body of a subject being treated, the device
delivering localized x-ray radiation, comprising: a shaft, including a proximal and a distal portion; a vacuum housing coupled to the distal portion of the shaft; an anode disposed within the vacuum housing; and a cathode structure disposed within the vacuum housing, the cathode
structure including a thin diamond film, the thin diamond film being operative with
the anode to produce the localized x-ray radiation.
Claim 2
Dependent Claim
34 words
The device of claim 1, wherein the cathode structure includes a base on
which the thin diamond film is disposed, the base comprising material selected from
the group consisting of molybdenum, tungsten and tantalum.
Claim 3
Dependent Claim
24 words
The device of claim 1, wherein an outer diameter of the integrated device is
less than or equal to approximately two and one-half millimeter.
Claim 4
Dependent Claim
23 words
The device of claim 1, wherein an outer diameter of the integrated device is
less than or equal to one and one-quarter millimeter.
Claim 5
Dependent Claim
29 words
A device of claim 1, wherein the vacuum housing comprises material
selected from the group consisting of boron nitride, isotropic boron nitride,
anisotropic boron nitride and pyrolytic boron nitride.
Claim 6
Dependent Claim
14 words
The device of claim 1 further comprising a getter disposed within the
vacuum housing.
Claim 7
Dependent Claim
21 words
The device of claim 1 wherein the cathode structure further comprises a
getter on which the thin diamond film is disposed.
Claim 8
Dependent Claim
23 words
The device of claim 6 or 7 wherein the getter is comprised of material
selected from zirconium, vanadium, aluminium, iron and combinations thereof.
Claim 9
Dependent Claim
20 words
The device of claim 1, wherein the shaft includes a catheter and the vacuum
housing is disposed within the catheter.
Claim 10
Dependent Claim
45 words
The device of claim 1, further comprising a flexible coaxial cable in the
shaft, the coaxial cable having an outer diameter of three millimeters or less, wherein
the cable is capable of conducting a voltage greater than or equal to 10 kilovolts
without electrical discharge.
Claim 11
Independent Claim
96 words
A method for fabricating a device for producing localized x-ray radiation,
the device being capable of insertion into a body of a subject being treated, the
method comprising the steps of: providing a getter having a tip portion corresponding to a cathode
structure where the getter has an activation temperature; forming a thin diamond film on the tip portion of the getter at a
temperature less than the activation temperature to provide a thin diamond film
cathode; disposing the cathode within a vacuum housing; and increasing the temperature to the activation temperature to activate
the getter.
References Cited (Backward Citations)
US4987007A
Cited
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