EP1951121A1 - Dispositif pour realiser des radiographies - Google Patents

Dispositif pour realiser des radiographies

Info

Publication number
EP1951121A1
EP1951121A1 EP05817097A EP05817097A EP1951121A1 EP 1951121 A1 EP1951121 A1 EP 1951121A1 EP 05817097 A EP05817097 A EP 05817097A EP 05817097 A EP05817097 A EP 05817097A EP 1951121 A1 EP1951121 A1 EP 1951121A1
Authority
EP
European Patent Office
Prior art keywords
shock absorber
housing
arrangement
ray
elements
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.)
Withdrawn
Application number
EP05817097A
Other languages
German (de)
English (en)
Inventor
Rudolf G. Laupper
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.)
Swissray Medical AG
Original Assignee
SWISSRAY INTERNATIONAL Inc
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 SWISSRAY INTERNATIONAL Inc filed Critical SWISSRAY INTERNATIONAL Inc
Publication of EP1951121A1 publication Critical patent/EP1951121A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/10—Safety means specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4233—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using matrix detectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units

Definitions

  • the invention relates to a device for generating X-ray images according to the preamble of claim 1.
  • Digital radiography is increasingly replacing conventional X-ray technology.
  • the digital X-ray technology is described for example in WO 96/22654.
  • Generically comparable devices for generating X-ray images are also known to the person skilled in the art as "Bucky.” They have a housing in which a digital X-ray image sensor is arranged , This arrangement has the consequence that the X-ray image sensor is insufficiently protected against impacts on the Bucky.
  • so-called Fiat Panel detectors for generating real-time X-ray images are very sensitive to bumps.
  • a floating and / or oscillatory suspension allows a compensation movement of the housing in all spatial directions.
  • impacts which act perpendicular to the image recording plane and which act on the housing in the direction of the image recording plane of the X-ray image sensor can be intercepted.
  • the housing can make compensatory movements, without the holding arrangement, which is to assume a fixed position, is moved.
  • the holding arrangement can be assigned to a fixed frame of an X-ray system. Of course, such racks need not be connected directly to the X-ray machine with the radiation source.
  • the X-ray image sensor is associated with the holding arrangement.
  • the X-ray image sensor is connected directly to the holding arrangement, wherein it may preferably be releasably attached to the holding arrangement.
  • This embodiment has the advantage that at least for bumps of lower intensity X-ray images of consistently high quality are possible.
  • the holding arrangement may be connected by a first shock absorber arrangement with a transmission unit.
  • the transmission unit may in turn be connected to the housing by a second shock absorber arrangement.
  • the first and the second shock absorber arrangement each have at least one shock-absorbing element.
  • the housing With the help of the transfer unit, the housing can be suspended in an ideal manner floating and / or vibratory to the support assembly.
  • These shock absorber arrangements can, for example, each have four shock absorber elements. Such an arrangement would be advantageous, for example, when using a rectangular x-ray image sensor (in a top view of the image acquisition plane).
  • metal springs or springs made of an elastomer may be considered as shock absorber elements.
  • the transmission unit may be rigid, in particular designed as a rigid component. It preferably consists of a metallic material.
  • the transmission unit can be designed as a rectangular carrier ring.
  • the rectangular ring shape is seen in a plan view of a main side of the transfer unit forth, wherein the main page extends at least in a rest position approximately plane-parallel to the image recording plane of the X-ray image sensor.
  • a carrier ring as a rigid component has several advantages. So he has advantageous mechanical properties. He also leaves enough space for the integration of cables and other electronic components. It would also be conceivable, however, to design the transmission unit as preferably approximately rectangular.
  • the shock absorber elements of the first shock absorber arrangement and the second shock absorber arrangement can be supported on one side on an upper side of the transmission unit facing the holding arrangement.
  • This arrangement has the advantage that the suspension is easily accessible and so mounted in a particularly simple manner and can be disassembled.
  • the transfer unit can be further connected to the shock absorber elements by means of quick-release fasteners.
  • the quick release can have a tool holder for an assembly tool.
  • the tool holder is advantageously designed accessible from the top of the transfer unit facing away from the holding assembly, whereby a fast mounting and dismounting is ensured.
  • a bearing surface can be provided. In this case, the bearing surface in a rest position may extend approximately plane-parallel to the image recording plane of the X-ray image sensor.
  • the support surface may for example be associated with a fastening corner element which is detachably connected to the housing.
  • each side of the shock absorber elements of the first and the second shock absorber arrangement are supported on support surfaces, each of which lies in the rest position on common planes.
  • This arrangement has the advantage that the same shock absorber elements can be used both for the first shock absorber arrangement and for the second shock absorber arrangement. As a result, the production costs and the costs per shock absorber element can be reduced.
  • one of the support surfaces or their associated plane would be predetermined by the transmission unit.
  • the bearing surface for supporting the shock absorber elements of the second shock absorber arrangement would be arranged on the housing such that it runs in the rest position in the plane of the top of the holding arrangement.
  • the shock absorber elements of the first shock absorber arrangement and / or the shock absorber elements of the second shock absorber arrangement may comprise spring elements, preferably coil springs and particularly preferably conical helical compression springs.
  • spring elements has the advantage that it can be easily and relatively inexpensively manufactured a shock absorber element. Experiments have shown that optimal suspension is created, especially when using conical helical compression springs. Another advantage of conical helical compression springs is that they are characterized by a small block length.
  • Each shock absorber element of the first shock absorber arrangement and / or each shock absorber element of the second shock absorber arrangement can each have a spring element. Depending on the application, but it would also be conceivable to provide several spring elements per shock absorber element.
  • the shock absorber elements of the first shock absorber arrangement and / or the shock absorber elements of the second shock absorber arrangement may comprise spring elements whose spring axes extend in the rest position perpendicular to the image recording plane of the x-ray image sensor.
  • the shock absorber elements can be provided with securing means. This leads in particular to a limitation of the movement of the housing and / or the transmission unit in the event of bumps. Thus, damage to the X-ray image sensor by mechanical action can be virtually eliminated.
  • the holding arrangement may be connected on at least one side by at least one additional spring element with the housing.
  • a respective additional spring element may have a spring axis which runs parallel to the corresponding side in the image recording plane of the x-ray image sensor.
  • Particularly preferred can be used as additional spring elements wire rope spring elements.
  • Such a third shock absorber arrangement further increases protection against bumps.
  • the third shock absorber arrangement can be used as a kind of second damping stage, which comes in particular only at bumps with a larger way to bear. The first damping stage would then be predetermined by the aforementioned first and second shock absorber arrangement.
  • At least one wire cable spring element is arranged in the region of the side opposite a holding arm and the transverse sides of the holding arrangement adjoining this side.
  • the housing may be composed of two housing shells. This embodiment is characterized by an advantageous handling. For example, by removing a removable housing shell maintenance can be carried out in a simple manner.
  • fastening means for releasably securing a anti-scatter grid for the production of special X-ray images can be provided in the region of an image pickup side.
  • fixing means for releasably securing the anti-scatter grid in a storage position can be provided on the housing.
  • At least one outwardly directed motion detector for monitoring movements in the environment of the housing can be provided on the housing.
  • laser light barriers can be used as motion detectors.
  • Motion detectors can be arranged for example in the corner regions of the housing. Preferably, two motion detectors may be provided, each arranged in the corner regions facing away from the holding arm could be. Thus, in particular the protection of persons can be significantly improved.
  • At least one sensor for monitoring shocks may be provided in the housing.
  • the sensor can be attached to the holding arrangement.
  • the sensor can accommodate movements of the transmission unit and / or the housing.
  • a sensor for example, a system operating with laser light can be used. Thus, poor quality X-ray images can be avoided.
  • other sensor systems for detecting shocks are also conceivable. Also conceivable is the use of acceleration sensors.
  • One aspect of the invention relates to an X-ray machine with a radiation source for emitting X-rays and with a device for generating real-time X-ray images.
  • Said device can with motion detectors for monitoring movements in the environment of the housing and / or sensors for monitoring shocks.
  • the motion detectors and / or sensors are connected to a control unit, via which an X-ray recording process can be automatically switched off upon notification of movements in the environment of the housing or in the event of critical impacts.
  • the process reliability of the X-ray machine can be further optimized.
  • Such an arrangement with for monitoring movements in the vicinity of the housing and / or sensors for monitoring shocks could of course also be used in conventional buckies. Alternatively or additionally, the arrangement could be connected to a warning system for reporting critical bumps.
  • FIG. 1 shows a perspective view of an X-ray system with a device for generating real-time X-ray images (Bucky) and a radiation source,
  • FIG. 2 is a schematic representation of a bucky
  • FIG. 3 shows an embodiment of the bucky according to FIG. 2,
  • FIG. 4 is a perspective view of a Bucky with the housing shell removed;
  • FIG. 5 shows a plan view of the bucky according to FIG. 4,
  • FIG. 6 is a perspective view of the mechanical structure of a bucky
  • FIG. 7 shows a plan view of the bucky according to FIG. 6,
  • Figure 8 is a perspective simplified view of a
  • Shock absorber element for a first or second shock absorber arrangement
  • FIG. 9 shows a side view with a partial section through the shock absorber element according to FIG. 8, FIG.
  • Figure 10 is a side view of a shock absorber element for a third shock absorber arrangement
  • Figure 11 is an end view of the shock absorber element according to Figure 10
  • Figure 12 is a perspective view of a corner of a housing of the Bucky.
  • an X-ray system consists of a frame 15 on which an X-ray device with a radiation source 5 is movably mounted.
  • the X-ray machine with the radiation source 5 is connected via a cantilever arm 17 and a holding arm 16 to a device for generating real-time X-ray images, the so-called Bucky 1.
  • the radiation source on the one hand and the bucky could be integrated together with the frame on the other hand separately or in different facilities.
  • the boom 17 can be moved vertically on the frame 15.
  • the Bucky 1 is pivotally mounted on the boom 17.
  • a scattered radiation grid 27 can be seen from FIG. 1, which is attached to the image recording side of the housing 2 by means of releasable fastening means 33.
  • the anti-scatter grid 27 can thus be dismantled in a simple manner and mounted, for example, on the image-receiving side opposite back of the Bucky in a storage position.
  • motion detectors 32 for monitoring movements in the surroundings of the housing are provided on the housing 2. With the help of these motion detectors to prevent, for example, during an X-ray recording, a third party can interfere with the process. When reports of movements therefore the X-ray machine switches off, whereby the X-ray recording process is stopped.
  • two motion detectors 32 can be seen in Corner regions of the housing 2 are arranged (see Figure 12).
  • FIG. 2 shows the basic structure of a Bucky 1.
  • a digital X-ray image sensor 3 is arranged. This is fastened to a holding arrangement 4, which in turn is connected to the holding arm (FIG. 1).
  • the housing 2 is attached to the support structure 4 via a floating and / or oscillatory suspension.
  • the suspension has for this purpose a rigid transmission unit 6, which is connected by a first shock absorber arrangement with shock absorber elements 7 with the holding arrangement 4. Then the transmission unit 6 is connected to the housing 2 by a second shock absorber arrangement with shock absorber elements 8.
  • the shock absorber elements 7 and 8 are designed such that they permit a movement of the housing 2 perpendicular to the image recording plane (z direction) and in the x and y direction (i.e., in the image recording plane). This can be achieved for example by spring elements, in particular metal springs. Elastomer-based shock absorber elements are also suitable. Of course, other embodiments of shock absorber elements are conceivable.
  • the housing 2 consists essentially of a housing shell 14 and a removable housing shell 13.
  • a support surface 18 for supporting the shock absorber element 8 assigned on the housing shell 14 .
  • the bearing surface 18, the image recording plane of the x-ray sensor 3 and the transmission unit 6 in the rest position are plane-parallel to each other.
  • the shock absorber elements 7 and 8 are supported on one side on one of the holding arrangement 4 or the X-ray sensor 3 associated upper side of the transmission unit 6 from.
  • the schematic schematic diagram according to FIG. 2 allows for various structural configurations. For example, it is not necessary to form the shock absorber elements 7 and 8 differently. It may even be advantageous that the shock absorber element 7 and 8 are composed of the same or similar components.
  • the bucky 1 according to FIG. 3 differs from FIG. 2 in that an additional shock absorber arrangement is provided.
  • This may include spring elements 26, each connecting one side of the holding arrangement with the housing 1.
  • the spring element 26 has a spring axis A which runs along one side of the holding arrangement and in a plane-parallel plane to the image recording plane of the x-ray image sensor 3 (see FIG.
  • the transfer unit 6 is designed as a rectangular carrier ring or frame 9.
  • fastener elements 7 and 8 are fastened for example by quick-release fasteners.
  • These shock absorber elements each contain a conically shaped spring element.
  • the carrier ring 9 may consist of a metallic material, for example steel or aluminum.
  • three wire rope spring elements 26 can be seen as spring elements whose spring axes extend along one side of the holding arrangement 4 and in a plane-parallel plane to the image recording plane of the x-ray image sensor 3.
  • Figure 5 shows that in each case a wire rope spring element 26 is arranged in the region of the holding arm 16 opposite side and the adjoining this side transverse sides of the holding arrangement.
  • This wire spring elements form a third shock absorber arrangement, which acts as a second damping stage, which comes especially in shocks with a larger way to bear.
  • Figures 6 and 7 show again the Bucky 1, but without shuttering and without electronics. In this way, the basic mechanical structure of the bucky is recognizable.
  • 9 shock absorber elements 8 are arranged in the region of the corners of the carrier ring.
  • the support ring has on its along the transverse sides of the support member extending frame portions each two designated 31 recesses 31 for fastening by means of quick release of corresponding shock absorber elements.
  • the shock absorber elements 8 are obviously connected with a similar quick release with the support ring 9.
  • the shock absorber elements 7 and 8 essentially consist of a conical helical compression spring 10, which are arranged to be supported between a first support element 19 and a second support element 22.
  • the first support member 19 is disc-shaped and has a circular outer contour. It can be connected by means of fastening screws (FIG. 3 *) either to the retaining arrangement or to the fastening corner element.
  • FIG. 9 shows a corresponding receptacle 21 for the fastening screw 20.
  • the conical helical compression spring 10 is shown.
  • the spring element 10 is fixed by a shoulder 25 on the first support element 19.
  • a centering portion 23 is provided for positioning on the second support member 22.
  • the shock absorber element is secured by securing means 11. These can be designed, for example, as chain (see preceding FIGS. 4 and 5) or steel cables.
  • the motion detector 32 may be formed as a laser light barrier.
  • the laser light barrier generates an outwardly directed (indicated by an arrow) laser beam, with which movements in the environment of the housing can be detected in an advantageous manner.
  • the motion detector 32 is connected to a control unit (not shown) for controlling in particular the X-ray recording process.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mathematical Physics (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

L'invention concerne un dispositif pour réaliser des radiographies en temps réel. Ce dispositif comprend un logement (2) dans lequel est placé un capteur radiographique numérique (3), et un ensemble support (4) qui peut être relié à un appareil de radiographie comportant une source de rayonnement (5). Le logement (2) est fixé sur l'ensemble support (4) par l'intermédiaire d'une suspension flottante et/ou oscillante. Cette suspension comprend une bague de support (9) qui est reliée à l'ensemble support (4) au moyen d'éléments amortisseurs (7), ainsi qu'au logement (2) à l'aide d'éléments amortisseurs (8).
EP05817097A 2005-11-24 2005-11-24 Dispositif pour realiser des radiographies Withdrawn EP1951121A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/056190 WO2007059804A1 (fr) 2005-11-24 2005-11-24 Dispositif pour realiser des radiographies

Publications (1)

Publication Number Publication Date
EP1951121A1 true EP1951121A1 (fr) 2008-08-06

Family

ID=36678051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05817097A Withdrawn EP1951121A1 (fr) 2005-11-24 2005-11-24 Dispositif pour realiser des radiographies

Country Status (5)

Country Link
US (1) US20090161832A1 (fr)
EP (1) EP1951121A1 (fr)
JP (1) JP2009517099A (fr)
CA (1) CA2630491A1 (fr)
WO (1) WO2007059804A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180055307A (ko) * 2016-11-16 2018-05-25 삼성전자주식회사 엑스선 디텍터 및 이를 포함하는 엑스선 촬영장치
US20220018976A1 (en) * 2018-12-18 2022-01-20 Carestream Health, Inc. Method and apparatus to improve robustness in a digital radiographic capture device

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Publication number Priority date Publication date Assignee Title
US4042230A (en) * 1975-10-22 1977-08-16 The Yokohama Rubber Company Ltd. Dynamic absorber with pneumatic springs
US5090657A (en) * 1990-08-06 1992-02-25 Tecumseh Products Company Cable reinforced mounting system
DE59408635D1 (de) * 1993-07-06 1999-09-23 Sirona Dental Sys Gmbh & Co Kg Zeilendetektor-Kamera für die Verwendung bei insbesondere zahnärztlichen Röntgendiagnostikgeräten
US6567265B1 (en) * 1995-11-20 2003-05-20 Matsushita Electric Industrial Co., Ltd. Apparatus having flexible mounting mechanism
EP0822779B1 (fr) * 1996-02-26 2003-05-14 Koninklijke Philips Electronics N.V. Detecteur d'objets et dispositif de commande associe, destines a un appareil de diagnostic medical
JP2002014168A (ja) * 2000-06-27 2002-01-18 Canon Inc Ｘ線撮像装置
JP2004173907A (ja) * 2002-11-27 2004-06-24 Canon Inc Ｘ線撮像装置
JP3884377B2 (ja) * 2002-12-27 2007-02-21 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Ｘ線撮影装置
US7029175B2 (en) * 2003-05-19 2006-04-18 Ge Medical Systems Global Technology Company, Llc Method and apparatus for object collision detection utilizing a PID controller in a motorized, mobile C-arm
JP2005003850A (ja) * 2003-06-11 2005-01-06 Canon Inc Ｘ線撮影装置
DE102004042365A1 (de) * 2003-09-12 2005-04-14 Siemens Ag Röntgendetektor
US7154098B2 (en) * 2004-02-19 2006-12-26 General Electric Company Ruggedized scintillation detector for portal monitors and light pipe incorporated therein
JP2005245663A (ja) * 2004-03-03 2005-09-15 Canon Inc 放射線撮影装置の振動測定方法及び測定装置及び処理装置
US7324628B2 (en) * 2005-04-22 2008-01-29 General Electric Company Method of testing a medical imaging device

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Title
See references of WO2007059804A1 *

Also Published As

Publication number Publication date
WO2007059804A1 (fr) 2007-05-31
JP2009517099A (ja) 2009-04-30
CA2630491A1 (fr) 2007-05-31
US20090161832A1 (en) 2009-06-25

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