WO2011154694A1 - Support de plaque d'imagerie radiographique - Google Patents

Support de plaque d'imagerie radiographique Download PDF

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Publication number
WO2011154694A1
WO2011154694A1 PCT/GB2011/000859 GB2011000859W WO2011154694A1 WO 2011154694 A1 WO2011154694 A1 WO 2011154694A1 GB 2011000859 W GB2011000859 W GB 2011000859W WO 2011154694 A1 WO2011154694 A1 WO 2011154694A1
Authority
WO
WIPO (PCT)
Prior art keywords
stand
lever
support
base
pivot
Prior art date
Application number
PCT/GB2011/000859
Other languages
English (en)
Inventor
Mark Reeves
Original Assignee
Mra Technology Ltd
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 Mra Technology Ltd filed Critical Mra Technology Ltd
Publication of WO2011154694A1 publication Critical patent/WO2011154694A1/fr

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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
    • A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4283—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by a detector unit being housed in a cassette
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G03B42/04—Holders for X-ray films
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/04—Means for releasing the attractive force

Definitions

  • the present invention relates to a support for radiography image plates and in particular, but not exclusively, to a support for holding image plates for medical imagery devices, such as x-ray machines.
  • X-ray images are used to provide medics with an image of patients' skeletal and muscular structures.
  • the x-ray machine generates an x- ray beam which passes through the body at contrasting rates of absorption. This contrast is captured by an image plate positioned on the opposite side of the body to the machine.
  • the imaging plate is held in place by a support and the accurate and stable positioning of the support is critical to successful image generation.
  • Certain prior art supports suffer from the disadvantages that they are insufficiently stable to guarantee blur-free radiographic recording, or are very large and intrusive structures to use and store, or are over-complicated in use. Supports typically used for lateral Xray recording in resuscitation environments are heavy and cumbersome to move, take up space around an intensive care bed or stretcher equivalent to at least one person, and also occupy the same large space while not in use.
  • a support for a radiographic imaging plate including at least one stand for holding the plate, the stand having a magnet fixed on a lower surface of the stand, the magnet for releasably securing the stand to a base, the stand having a lever moveable between a first position and a second position, the lever for moving the stand between a first position in which the magnet is in contact with the base and a second position in which the stand is raised from the base causing the magnetic attractive force between the stand and the base to weaken.
  • a lever allows the device to apply mechanical advantage to the force applied to the lever by the hand of the user.
  • a moderate force applied to the lever by the user is sufficient to overcome the significant attractive force between the stand and the base.
  • the lever has a first end for selectively engaging the base, a second end operable to move the first end and a pivot mounted on the stand.
  • the pivot is located between the first end and second end of the lever.
  • the lever remains inboard of the stand when the lever is in its first position.
  • the first end of the lever moves in an arc upon operation of the second end to permit the first end to extend below the lower surface of the stand so as to raise the stand away from the base.
  • the lever rotates through an arc of 12.5 to 17.5 degrees in moving between the first and second positions.
  • the first end of the lever extends beyond the lower surface of the stand by up to 5 mm, preferably 3 mm when the lever is in its second position.
  • the pivot is positioned between 50 and 70 mm from the first end.
  • the first end of the lever rests against an inner surface of the stand when the lever is in the first position.
  • the second end of the lever rests against an inner surface of the stand when the lever is in the second position.
  • the lever is between 100 and 200 mm in length.
  • the lever moves to an over centre position in moving from the first to the second position.
  • the lever has a first end for selectively engaging a drive mechanism to, in use, raise the stand from the base, and a second end operable to move the first end, the lever being supported by a pivot mounted on the stand.
  • the pivot is arranged between the first end and second end of the lever.
  • the drive mechanism includes a drive pin having a first end for engaging the first end of the lever and a second end for engaging the base.
  • the drive pin includes a foot plate at its second end, the foot plate for engaging the base.
  • the drive mechanism includes a housing which retains a piston moveable to raise the stand from the base, the piston having a upper surface defining a ramp portion, the mechanism further including a ball bearing which engages the ramp portion and the first end of the lever such that the ball bearing acts on the ramp portion to move the piston to raise the stand from the base when the lever is moved to its second position.
  • the raising of the stand away from the base weakens the magnetic attraction between the stand and the base allowing the stand to be easily moved relative to the base.
  • the support has two stands interconnected by a brace.
  • FIGURE 1 is an isometric view of the imaging plate support according to the present invention
  • FIGURE 2 is an isometric view of a stand of the support of Fig 1 with the stand in its first position;
  • FIGURE 3 is a sectioned side view of the stand of Fig 2 with the stand in its first position;
  • FIGURE 4 is an isometric view of a stand of the support of Fig 1 with the stand in its second position;
  • FIGURE 5 is a sectioned side view of the stand of Fig 4 with the stand in its second position;
  • FIGURE 6 is a sectioned side view of an alternative embodiment of the stand of the imaging plate support of Figure 1 with the stand shown in its first position;
  • FIGURE 7 is a sectioned side view of the stand of Figure 6 with the stand shown in its second position
  • FIGURE 8 is a sectioned side view of a further alternative embodiment of the stand of the imaging plate support of Figure 1 with the stand shown in its first position
  • FIGURE 9 is a sectioned side view of the stand of Figure 8 with the stand shown in its second position.
  • a support 10 having a first stand 12 and a second stand 14 which are substantially identical.
  • the first and second stand 12, 14 are connected by a brace 16.
  • the first stand 12, second stand 14 and the brace 16 have a channel indicated generally at 18 for receiving a radiography image plate (not shown for clarity).
  • Each of the stands 12, 14 has an upstanding body section 20 and an angled foot section 22.
  • the body section 20 carries a lever 24 of approximately 120mm in length within a cavity 25.
  • the cavity 25 having an inner surface defined in part by a rear wall 27.
  • the lever has a first, lower end 26 shown only in Figure 2 to 5 and a second, upper end 28.
  • the upper end 28 is operable by the user to actuate the lower end 26 as will be described in further detail shortly.
  • a lower surface 30 of the foot section 22 of the stand 12, 14 carries magnets 32 for engaging a flat base (not shown for clarity).
  • the lever 24 is supported on the stand 12, 14 by a pivot in the form of a pin 34 which is inserted through the body section 20 of the stand 12, 14 and the lever 24 to allow the rotation of the lever 24 relative to the stand 12, 14.
  • the pin 34 is located approximately 60mm from the first end of the lever 24.
  • a stand 1 12 is provided as an alternative to the stands 12, 14 of Figure 1.
  • the stand 112 has a different exterior profile and operating mechanism to the stand of Figure 1 but, like the stands 12, 14 acts to raise the stand 112 from the base so as to make the support easier to move.
  • the stand 1 12 has an upstanding body section 120 and a foot section 122.
  • the body section 120 includes a channel indicated generally at 118 for receiving a radiography image plate (not shown for clarity).
  • a lower surface of the foot section 122 carries magnets 132 for engaging the base (not shown for clarity).
  • the body section 120 carries a lever 124 operable between a first position shown in Figure 6 and a second position shown in Figure 7.
  • the lever is operable by way of a handle section 126 to rotate about a pivot 128.
  • a drive portion 130 At the other end of the lever 124 from the handle section 126 is a drive portion 130.
  • the drive portion 130 engages a drive mechanism in the form of a drive pin 134 and foot plate 138 as follows.
  • the drive portion 130 engages a first end of the drive pin 134 which is slidable within a slot 136 in the foot section 122.
  • the lower end of the drive pin 134 is attached to the foot plate 138 (shown most clearly in Figure 7) which rests on the base when the support is in use.
  • a stand 212 is provided as a further alternative to the stands 12, 14 of Figure 1 and 1 12 of Figure 2.
  • the stand 212 has a different exterior profile and operating mechanism to the stand of Figure 1 but, like the stands 12, 14 acts to raise the stand 1 12 from the base so as to make the support easier to move.
  • the stand 212 has an upstanding body section 220 and a foot section 222.
  • the body section 220 includes a channel indicated generally at 218 for receiving a radiography image plate (not shown for clarity).
  • a lower surface of the foot section 222 carries magnets 232 for engaging the base (not shown for clarity).
  • the stand 212 has a lever 224 operable between a first position shown in Figure 8 and a second position shown in Figure 9.
  • the lever 224 is operable by way of a handle section 226 to rotate about a pivot 228.
  • At the other end of the lever 224 from the handle section 226 is a drive portion 230.
  • the drive portion 230 engages a drive mechanism in the form of a ball bearing 234 and a piston 240 as follows.
  • the drive portion 230 engages the ball bearing 234 which is located within a housing 236 so as to be in contact with an upper surface of the housing interior.
  • the ball bearing 234 also engages a ramp portion 238 of the piston 240 which is slidable vertically within the housing 236 and which has a foot section 242 for contacting the base.
  • the shape of the foot section 138 and 242 could very without departure from the scope of the invention. Furthermore in the embodiment described in Figures 6 and 7, the foot section 138 could be omitted allowing the drive pin 134 to engage directly with the base without departure from the scope of the invention.

Landscapes

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

Abstract

L'invention concerne un support pour plaque d'imagerie radiographique, comprenant au moins un montant destiné à maintenir la plaque. Le montant comprend un aimant fixé sur sa surface inférieure et servant à le fixer de manière amovible à une base, un levier mobile entre une première position et une seconde position destiné à déplacer le montant de la première position dans laquelle l'aimant est en contact avec la base vers la seconde position dans laquelle le montant est dressé à partir de la base, ce qui entraîne l'affaiblissement de la force d'attraction magnétique entre le montant et la base.
PCT/GB2011/000859 2010-06-07 2011-06-07 Support de plaque d'imagerie radiographique WO2011154694A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1009516.4A GB201009516D0 (en) 2010-06-07 2010-06-07 Support for radiograph imaging plate
GB1009516.4 2010-06-07

Publications (1)

Publication Number Publication Date
WO2011154694A1 true WO2011154694A1 (fr) 2011-12-15

Family

ID=42471283

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/000859 WO2011154694A1 (fr) 2010-06-07 2011-06-07 Support de plaque d'imagerie radiographique

Country Status (2)

Country Link
GB (1) GB201009516D0 (fr)
WO (1) WO2011154694A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876359A (en) * 1955-06-28 1959-03-03 Plymale Jay Langley Magnetic support
GB865502A (en) * 1959-04-03 1961-04-19 Joachim Anton Besuch Magnetic device for handling ferromagnetic articles
DE2907508A1 (de) * 1979-02-26 1980-09-04 Magnetfab Bonn Gmbh Flachhaft-dauermagnet zur fixierung von schalungsteilen
WO1999038726A1 (fr) * 1998-02-02 1999-08-05 Perry John Underwood Dispositif de fixation
US6471273B1 (en) * 2000-08-14 2002-10-29 Industrial Magnetics, Inc. Lifting magnet with roller cam release mechanism
GB2453755A (en) * 2007-10-17 2009-04-22 Mra Technology Ltd Magnetic Imaging Plate Support For Recording of Radiographs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876359A (en) * 1955-06-28 1959-03-03 Plymale Jay Langley Magnetic support
GB865502A (en) * 1959-04-03 1961-04-19 Joachim Anton Besuch Magnetic device for handling ferromagnetic articles
DE2907508A1 (de) * 1979-02-26 1980-09-04 Magnetfab Bonn Gmbh Flachhaft-dauermagnet zur fixierung von schalungsteilen
WO1999038726A1 (fr) * 1998-02-02 1999-08-05 Perry John Underwood Dispositif de fixation
US6471273B1 (en) * 2000-08-14 2002-10-29 Industrial Magnetics, Inc. Lifting magnet with roller cam release mechanism
GB2453755A (en) * 2007-10-17 2009-04-22 Mra Technology Ltd Magnetic Imaging Plate Support For Recording of Radiographs

Also Published As

Publication number Publication date
GB201009516D0 (en) 2010-07-21

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