EP0860181A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
X-ray device having a dilatation structure for delivering localized radiation to an interior of a body
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 use of such a device. The device includes an anode and a cathode, disposed within a vacuum housing. The device further includes a balloon coupled to and circumferentially surrounding the vacuum housing, and a fluid loop for circulating a cooling fluid proximate to the vacuum housing. A method for delivering localized x-ray radiation to an interior passage of a body is also described, including the steps of positioning an x-ray device at the passage to be treated and applying a high voltage to the x-ray producing unit to produce localized x-ray radiation.
Inventors
- 👤 Victor I. Chornenky
- 👤 Michael R. Forman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 12:04
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: 16
Claim 1
Independent Claim
95 words
An x-ray device for delivering localized radiation to the interior of a body,
comprising: an anode and a cathode, disposed within a vacuum housing, the anode
and the cathode arranged to produce the localized x-ray radiation; a flexible shaft having distal and proximal portions, where the
vacuum housing is coupled to the distal portion of the shaft; and a balloon coupled to and circumferentially surrounding the vacuum
housing, the balloon being in fluid communication with a fluid loop for
providing a fluid in an interior of the balloon, the balloon being inflatable by
the fluid.
Claim 2
Dependent Claim
23 words
The device of claim 1, further comprising a getter in the vacuum housing, for
improving and maintaining vacuum conditions in the vacuum housing.
Claim 3
Dependent Claim
19 words
The device of claim 2, wherein the getter has an activation temperature
between about 300 and 900 degrees C.
Claim 4
Dependent Claim
19 words
The device of claim 3, wherein the getter comprises material selected from
zirconium, aluminum, vanadium, iron, and combinations thereof.
Claim 5
Dependent Claim
26 words
The device of claim 1, wherein the shaft further includes a cooling fluid loop
for circulating a cooling fluid to the distal portion of the shaft.
Claim 6
Dependent Claim
23 words
The device of claim 1, wherein the shaft and the vacuum housing have an
outer diameter less than or equal to 3 millimeters.
Claim 7
Dependent Claim
23 words
The device of claim 1, wherein the shaft and the vacuum housing have an
outer diameter less than or equal to 2 millimeters.
Claim 8
Dependent Claim
12 words
The device of claim 1, wherein the vacuum housing is substantially
cylindrical.
Claim 9
Dependent Claim
10 words
The device of claim 1, wherein the balloon is elastic.
Claim 10
Dependent Claim
16 words
The device of claim 1, wherein the flexible shaft comprises conductors for
providing a high voltage.
Claim 11
Dependent Claim
75 words
An x-ray device for delivering localized radiation to the interior of a body,
comprising: an anode and a cathode, disposed within a vacuum housing, the anode
and the cathode arranged to produce the localized x-ray radiation; and an elastic balloon coupled to an circumferentially surrounding the
vacuum housing, the balloon being in fluid communication with a fluid loop
for providing a fluid in an interior of the balloon, the balloon being inflatable
by the fluid.
Claim 12
Independent Claim
94 words
A method for delivering localized x-ray radiation to an interior passage of a
body, comprising: positioning an x-ray device at the passage to be treated, the x-ray
device comprising an x-ray producing unit, a flexible shaft having distal and
proximal portions, where the vacuum housing is coupled to the distal portion
of the shaft, and a dilating balloon circumferentially surrounding the x-ray
producing unit, and a fluid loop for providing a fluid to an interior of the
dilating balloon; and applying a high voltage to the x-ray producing unit to produce
localized x-ray radiation.
Claim 13
Dependent Claim
25 words
The method of claim 12, further comprising inflating the dilation balloon by
providing fluid through the fluid loop to the interior of the dilating balloon.
Claim 14
Dependent Claim
19 words
The method of claim 12, further comprising cooling the x-ray device with
the fluid used to inflate the balloon.
Claim 15
Dependent Claim
20 words
The method of claim 12, further comprising providing a cooling fluid loop
for circulating cooling fluid to the x-ray device.
Claim 16
Dependent Claim
24 words
The method of claim 12, wherein positioning the x-ray device at the passage
to be treated comprises disposing the x-ray device inside an endoscope.
References Cited (Backward Citations)
US4987007A
Cited
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