DE4430623A1 - X=ray image amplifier, e.g. for medical use - Google Patents

X=ray image amplifier, e.g. for medical use

Info

Publication number
DE4430623A1
DE4430623A1 DE19944430623 DE4430623A DE4430623A1 DE 4430623 A1 DE4430623 A1 DE 4430623A1 DE 19944430623 DE19944430623 DE 19944430623 DE 4430623 A DE4430623 A DE 4430623A DE 4430623 A1 DE4430623 A1 DE 4430623A1
Authority
DE
Germany
Prior art keywords
housing
edge
input screen
ray image
image amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19944430623
Other languages
German (de)
Other versions
DE4430623C2 (en
Inventor
Richard Frank
Heinrich Dr Diepers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE19944430623 priority Critical patent/DE4430623C2/en
Publication of DE4430623A1 publication Critical patent/DE4430623A1/en
Application granted granted Critical
Publication of DE4430623C2 publication Critical patent/DE4430623C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

The X-ray image amplifier has an input screen (2) and a housing (1). A border of the input screen is adhesively connected to a border (3) of the housing. The borders (3) are pressed together for about 30 minutes at 500 deg.C so that aluminium begins to flow. A diffusion connection between aluminium and steel is formed. A part of the pressing mechanism is used to equalise surface errors of the borders such as scratches during pressing. Vacuum heating is used.

Description

Bei bekannten Vakuum-Röhren, wie z. B. Röntgenbildverstärkern, besteht der die Röntgen- oder Gammastrahlen durchlassende Eingangsschirm aus schwach absorbierenden Materialien, wie z. B. Beryllium, Titan oder Aluminium. Das Gehäuse des Rönt­ genbildverstärkers besteht aus Schwermetallen, wie Stahl oder Edelstahl. Zum vakuumdichten Verbinden des Eingangsschirmes mit dem Gehäuse ist es bekannt, zumindest die zu verbindenden Flächen galvanisch zu vernickeln bzw. zu versilbern und dann eine Diffusionsschweißung durchzuführen. Bekannterweise kann eine Preßverschweißung oder eine Reibschweißung, eine Keil­ reibschweißung oder bei besonders dünnen Folien, wie Titanfo­ lien, eine Direktverschweißung eine entsprechende Verbindung herbeiführen.In known vacuum tubes, such as. B. X-ray image intensifiers, there is the one that transmits the X-rays or gamma rays Entrance screen made of weakly absorbent materials such as e.g. B. beryllium, titanium or aluminum. The casing of the Roentgen gene image intensifier consists of heavy metals such as steel or Stainless steel. For vacuum-tight connection of the entrance screen with the housing it is known, at least those to be connected Nickel-plated or silver-plated surfaces and then carry out a diffusion welding. As is known, can a pressure weld or a friction weld, a wedge friction welding or with particularly thin foils, such as titanium fo lien, a direct weld a corresponding connection bring about.

Aufgabe der Erfindung ist es, eine vakuumdichte Verbindung zwischen einem Eingangsschirm eines Röntgenbildverstärkers und dessen Gehäuse herzustellen.The object of the invention is a vacuum-tight connection between an input screen of an X-ray image intensifier and manufacture its housing.

Die Aufgabe wird erfindungsgemäß nach einer Variante dadurch gelöst, daß der Rand des Eingangsschirmes über eine Klemmver­ bindung mit dem Gehäuse in Verbindung steht. Gemäß weiteren Varianten steht der Rand des Eingangsschirmes über eine Dif­ fusionshaftung oder eine Klebeverbindung oder ein Polyimid mit dem Gehäuse in Verbindung.According to the invention, the object is achieved in one variant solved that the edge of the input screen via a Klemmver bond with the housing. According to others Variants, the edge of the entry screen is above a dif fusion adhesion or an adhesive bond or a polyimide in connection with the housing.

Zur Erläuterung der Erfindung wird nachfolgend auf die Fig. 1 bis 5 verwiesen.To explain the invention, reference is made below to FIGS. 1 to 5.

Fig. 1-4 zeigen die Verfahrensschritte zum Herbeiführen einer Klemmverbindung zwischen dem Rand des Ein­ gangsschirmes und dem Rand des Gehäuses und Fig. 1-4 show the process steps for bringing about a clamping connection between the edge of the input screen and the edge of the housing and

Fig. 5 eine Verbindung zwischen dem Rand des Eingangs­ schirmes mit dem Rand des Gehäuses über eine zwischengeordnete Klebe- oder Polyimidschicht. Fig. 5 shows a connection between the edge of the input screen with the edge of the housing via an intermediate adhesive or polyimide layer.

In den Figuren sind gleiche Elemente mit den gleichen Bezugs­ zeichen versehen. Mit dem Bezugszeichen 1 ist ein Gehäuse und mit dem Bezugszeichen 2 ein Eingangsschirm eines Röntgenbild­ verstärkers gekennzeichnet. Aus der Fig. 1 ist ersichtlich, daß ein Rand 3 des Gehäuses 1 Z-förmig abgewinkelt ist. Auf den in den Figuren horizontal ausgerichteten Teil des Randes 3 ist ein Rand 4 des Eingangsschirmes 2 gelegt. Zur Herstel­ lung einer erfindungsgemäßen Klemmverbindung wird der in der Fig. 1 vertikal ausgerichtete Endrandteil um den Rand 4 des Eingangsschirmes 2 gebogen, so daß der Rand 4 in einer Klemm­ verbindung gehalten ist (Fig. 2).In the figures, the same elements are provided with the same reference characters. Reference number 1 denotes a housing and reference number 2 denotes an input screen of an x-ray image intensifier. From Fig. 1 it can be seen that an edge 3 of the housing 1 is angled Z-shaped. An edge 4 of the input screen 2 is placed on the part of the edge 3 which is oriented horizontally in the figures. To manufacture a clamping connection according to the invention, the vertically oriented end edge part in FIG. 1 is bent around the edge 4 of the input screen 2 , so that the edge 4 is held in a clamping connection ( FIG. 2).

In der Fig. 3 ist gezeigt, daß eine Klemmvorrichtung 5 an dem umgebörtelten Rand 3 des Gehäuses 1 angreift und daß zum Her­ beiführen einer Diffusionshaftung eine Kraft P auf diesen einwirkt. Das Pressen der Ränder 3, 4 erfolgt für ca. 30 Minu­ ten. Bei einer Temperatur von ca. 500°C, so daß das Aluminium zu fließen beginnt und durch das Aufreißen der Aluminiumoxid­ haut eine Diffusionshaftung zwischen dem Aluminium und dem Stahl herbeigeführt wird.In Fig. 3 it is shown that a clamping device 5 engages the flanged edge 3 of the housing 1 and that a force P acts on it to bring about a diffusion adhesion. The edges 3 , 4 are pressed for about 30 minutes. At a temperature of about 500 ° C., so that the aluminum begins to flow and the aluminum oxide skin tears open, causing diffusion adhesion between the aluminum and the steel.

Versieht man, wie in der Fig. 4 gezeigt, ein Teilstück 6 der Preßvorrichtung 5 mit einem Keilprofil 7, so können Oberflä­ chenfehler der Ränder 3 und 4, wie z. B. Kratzer und Drehril­ len beim Pressen egalisiert werden.Provided, as shown in Fig. 4, a section 6 of the pressing device 5 with a spline 7 , surface defects of the edges 3 and 4 , such as. B. scratches and Drehril len be equalized when pressing.

Gemäß einer vorteilhaften in der Fig. 5 gezeigten Variante sind die einander zugewandten Kontaktflächen der Ränder 3 und 4 mit einer Dichtmasse 8, beispielsweise einem Kleber verse­ hen, der während einer nachfolgenden Vakuumausheizung aushär­ tet. Geeignete Kleber sind z. B.: EPO. Tek 314, Shore D80, Nr. 7030, Nr. 952, Nr. 954, Durapot 863, die von der Fa. Polytec GmbH, Waldbornn, hergestellt werden.According to an advantageous variant shown in FIG. 5, the mutually facing contact surfaces of the edges 3 and 4 are provided with a sealing compound 8 , for example an adhesive, which cures during subsequent vacuum heating. Suitable adhesives are e.g. E.g .: EPO. Tek 314, Shore D80, No. 7030, No. 952, No. 954, Durapot 863, which are manufactured by Polytec GmbH, Waldbornn.

Gemäß einer weiteren Variante (Fig. 5) sind die einander zuge­ wandten Kontaktflächen der Ränder 3, 4 mit einem Polyimid-Lack als Dichtmasse 8 eingestrichen. Während der Vakuumausheizung bei einer Temperatur von z. B. 250°C reagiert das Polyimid zu einer den Spalt vollständig und vakuumdicht ausfüllenden Fo­ lie.According to a further variant ( FIG. 5), the mutually facing contact surfaces of the edges 3 , 4 are coated with a polyimide lacquer as a sealing compound 8 . During the vacuum bake at a temperature of e.g. B. 250 ° C, the polyimide reacts to a completely and vacuum-filling Fo lie filling.

Selbstverständlich kann auch bei der in den Fig. 1 bis 4 ge­ zeigten Klemmverbindung zusätzlich eine Klebe- oder Polyimidschicht zwischen den Rändern 3, 4 vorgesehen sein.Of course, an additional adhesive or polyimide layer can also be provided between the edges 3 , 4 in the clamping connection shown in FIGS . 1 to 4.

Claims (4)

1. Röntgenbildverstärker mit einem Eingangsschirm (2) und mit einem Gehäuse (1), wobei ein Rand (4) des Eingangsschirmes (2) über eine Klemm­ verbindung mit einem Rand (3) des Gehäuses (1) in Verbindung steht.1. X-ray image intensifier with an input screen ( 2 ) and with a housing ( 1 ), wherein an edge ( 4 ) of the input screen ( 2 ) via a clamping connection with an edge ( 3 ) of the housing ( 1 ) is connected. 2. Röntgenbildverstärker mit einem Eingangsschirm (2) und mit einem Gehäuse (1), wobei ein Rand (4) des Eingangsschirmes (2) über eine Diffu­ sionshaftung mit einem Rand (3) des Gehäuses (1) in Verbin­ dung steht.2. X-ray image intensifier with an input screen ( 2 ) and with a housing ( 1 ), wherein an edge ( 4 ) of the input screen ( 2 ) via a diffusion adhesion with an edge ( 3 ) of the housing ( 1 ) is in connec tion. 3. Röntgenbildverstärker mit einem Eingangsschirm (2) und mit einem Gehäuse (1), wobei ein Rand (4) des Eingangsschirmes (2) über eine Klebe­ verbindung mit einem Rand (3) des Gehäuses (1) in Verbindung steht.3. X-ray image intensifier with an input screen ( 2 ) and with a housing ( 1 ), wherein an edge ( 4 ) of the input screen ( 2 ) via an adhesive connection with an edge ( 3 ) of the housing ( 1 ) is connected. 4. Röntgenbildverstärker mit einem Eingangsschirm (2) und mit einem Gehäuse (1), wobei ein Rand (4) des Eingangsschirmes (2) über ein Polyimid mit einem Rand (3) des Gehäuses (1) in Verbindung steht.4. X-ray image intensifier with an input screen ( 2 ) and with a housing ( 1 ), an edge ( 4 ) of the input screen ( 2 ) being connected via a polyimide to an edge ( 3 ) of the housing ( 1 ).
DE19944430623 1994-08-29 1994-08-29 X-ray image intensifier Expired - Fee Related DE4430623C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944430623 DE4430623C2 (en) 1994-08-29 1994-08-29 X-ray image intensifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944430623 DE4430623C2 (en) 1994-08-29 1994-08-29 X-ray image intensifier

Publications (2)

Publication Number Publication Date
DE4430623A1 true DE4430623A1 (en) 1996-03-07
DE4430623C2 DE4430623C2 (en) 1998-07-02

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DE19944430623 Expired - Fee Related DE4430623C2 (en) 1994-08-29 1994-08-29 X-ray image intensifier

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19641625A1 (en) * 1996-10-09 1998-04-16 Siemens Ag X-ray image intensifier with vessel for accommodating electrodes
DE19641626A1 (en) * 1996-10-09 1998-04-16 Siemens Ag X-ray image intensifier with vessel for accommodating electrodes
DE19641627A1 (en) * 1996-10-09 1998-04-16 Siemens Ag X-ray image intensifier with vessel for accommodating electrodes
FR2778017A1 (en) * 1998-04-22 1999-10-29 Siemens Ag METHOD FOR MANUFACTURING AN X-RAY IMAGE INTENSIFIER, AND X-RAY IMAGE INTENSIFIER MANUFACTURED BY THIS METHOD
EP1547116A1 (en) * 2002-09-13 2005-06-29 Moxtek, Inc. Radiation window and method of manufacture
US7382862B2 (en) 2005-09-30 2008-06-03 Moxtek, Inc. X-ray tube cathode with reduced unintended electrical field emission
US7428298B2 (en) 2005-03-31 2008-09-23 Moxtek, Inc. Magnetic head for X-ray source
US7756251B2 (en) 2007-09-28 2010-07-13 Brigham Young Univers ity X-ray radiation window with carbon nanotube frame
WO2012165357A1 (en) * 2011-05-27 2012-12-06 Sasaki Makoto Vacuum container and method for producing same

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Publication number Priority date Publication date Assignee Title
US7737424B2 (en) 2007-06-01 2010-06-15 Moxtek, Inc. X-ray window with grid structure
US20100285271A1 (en) 2007-09-28 2010-11-11 Davis Robert C Carbon nanotube assembly
US8498381B2 (en) 2010-10-07 2013-07-30 Moxtek, Inc. Polymer layer on X-ray window
US9305735B2 (en) 2007-09-28 2016-04-05 Brigham Young University Reinforced polymer x-ray window
US8247971B1 (en) 2009-03-19 2012-08-21 Moxtek, Inc. Resistively heated small planar filament
US7983394B2 (en) 2009-12-17 2011-07-19 Moxtek, Inc. Multiple wavelength X-ray source
US8995621B2 (en) 2010-09-24 2015-03-31 Moxtek, Inc. Compact X-ray source
US8526574B2 (en) 2010-09-24 2013-09-03 Moxtek, Inc. Capacitor AC power coupling across high DC voltage differential
US8804910B1 (en) 2011-01-24 2014-08-12 Moxtek, Inc. Reduced power consumption X-ray source
US8750458B1 (en) 2011-02-17 2014-06-10 Moxtek, Inc. Cold electron number amplifier
US8929515B2 (en) 2011-02-23 2015-01-06 Moxtek, Inc. Multiple-size support for X-ray window
US8792619B2 (en) 2011-03-30 2014-07-29 Moxtek, Inc. X-ray tube with semiconductor coating
US8989354B2 (en) 2011-05-16 2015-03-24 Brigham Young University Carbon composite support structure
US9174412B2 (en) 2011-05-16 2015-11-03 Brigham Young University High strength carbon fiber composite wafers for microfabrication
US9076628B2 (en) 2011-05-16 2015-07-07 Brigham Young University Variable radius taper x-ray window support structure
US8817950B2 (en) 2011-12-22 2014-08-26 Moxtek, Inc. X-ray tube to power supply connector
US8761344B2 (en) 2011-12-29 2014-06-24 Moxtek, Inc. Small x-ray tube with electron beam control optics
US9072154B2 (en) 2012-12-21 2015-06-30 Moxtek, Inc. Grid voltage generation for x-ray tube
US9184020B2 (en) 2013-03-04 2015-11-10 Moxtek, Inc. Tiltable or deflectable anode x-ray tube
US9177755B2 (en) 2013-03-04 2015-11-03 Moxtek, Inc. Multi-target X-ray tube with stationary electron beam position
US9173623B2 (en) 2013-04-19 2015-11-03 Samuel Soonho Lee X-ray tube and receiver inside mouth

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DE712543C (en) * 1934-07-21 1941-10-21 Telefunken Gmbh Cathode ray tube
DE1764315A1 (en) * 1968-05-15 1971-07-01 Siemens Ag Electron tubes
DE2513894A1 (en) * 1975-03-27 1976-09-30 Siemens Ag VACUUM-PROOF FRAMED WINDOWS FOR THE PASSAGE OF RAY RAYS AND SIMILAR PENETRATING RAYS
DE2619293B2 (en) * 1976-04-30 1978-06-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Ray transmission window, especially for X-ray image intensifiers
US4522309A (en) * 1983-01-07 1985-06-11 U.S. Philips Corporation Cathode-ray tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE712543C (en) * 1934-07-21 1941-10-21 Telefunken Gmbh Cathode ray tube
DE1764315A1 (en) * 1968-05-15 1971-07-01 Siemens Ag Electron tubes
DE2513894A1 (en) * 1975-03-27 1976-09-30 Siemens Ag VACUUM-PROOF FRAMED WINDOWS FOR THE PASSAGE OF RAY RAYS AND SIMILAR PENETRATING RAYS
DE2619293B2 (en) * 1976-04-30 1978-06-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Ray transmission window, especially for X-ray image intensifiers
US4522309A (en) * 1983-01-07 1985-06-11 U.S. Philips Corporation Cathode-ray tube

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19641625A1 (en) * 1996-10-09 1998-04-16 Siemens Ag X-ray image intensifier with vessel for accommodating electrodes
DE19641626A1 (en) * 1996-10-09 1998-04-16 Siemens Ag X-ray image intensifier with vessel for accommodating electrodes
DE19641627A1 (en) * 1996-10-09 1998-04-16 Siemens Ag X-ray image intensifier with vessel for accommodating electrodes
FR2778017A1 (en) * 1998-04-22 1999-10-29 Siemens Ag METHOD FOR MANUFACTURING AN X-RAY IMAGE INTENSIFIER, AND X-RAY IMAGE INTENSIFIER MANUFACTURED BY THIS METHOD
EP1547116A1 (en) * 2002-09-13 2005-06-29 Moxtek, Inc. Radiation window and method of manufacture
EP1547116A4 (en) * 2002-09-13 2006-05-24 Moxtek Inc Radiation window and method of manufacture
US7233647B2 (en) 2002-09-13 2007-06-19 Moxtek, Inc. Radiation window and method of manufacture
US7428298B2 (en) 2005-03-31 2008-09-23 Moxtek, Inc. Magnetic head for X-ray source
US7382862B2 (en) 2005-09-30 2008-06-03 Moxtek, Inc. X-ray tube cathode with reduced unintended electrical field emission
US7756251B2 (en) 2007-09-28 2010-07-13 Brigham Young Univers ity X-ray radiation window with carbon nanotube frame
WO2012165357A1 (en) * 2011-05-27 2012-12-06 Sasaki Makoto Vacuum container and method for producing same
JPWO2012165357A1 (en) * 2011-05-27 2015-02-23 真人 佐々木 Vacuum container and method for manufacturing the same

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