WO2002026137A1 - Table de patient comprenant un cadre destinee a un diagnostic par rayons x - Google Patents

Table de patient comprenant un cadre destinee a un diagnostic par rayons x Download PDF

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Publication number
WO2002026137A1
WO2002026137A1 PCT/SE2001/002104 SE0102104W WO0226137A1 WO 2002026137 A1 WO2002026137 A1 WO 2002026137A1 SE 0102104 W SE0102104 W SE 0102104W WO 0226137 A1 WO0226137 A1 WO 0226137A1
Authority
WO
WIPO (PCT)
Prior art keywords
table top
examination
stand
movement
receptor
Prior art date
Application number
PCT/SE2001/002104
Other languages
English (en)
Inventor
Carl-Eric Ohlson
Original Assignee
Ao:S Metall & Mek. Verkstad Ab
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 Ao:S Metall & Mek. Verkstad Ab filed Critical Ao:S Metall & Mek. Verkstad Ab
Priority to AU2001292484A priority Critical patent/AU2001292484A1/en
Publication of WO2002026137A1 publication Critical patent/WO2002026137A1/fr

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
    • A61B6/04—Positioning of patients; Tiltable beds or the like
    • A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
    • A61B6/0442—Supports, e.g. tables or beds, for the body or parts of the body made of non-metallic materials

Definitions

  • the present invention relates to a patient examination table for diagnosis by X-ray, ultrasound, magnetic resonance imaging or like processes and more specifically to a table of the kind defined in the preamble of Claim 1.
  • Such examination tables have been modified from a simple type of table consisting essentially of an X-ray permeable table top on four fixedly mounted or wheeled legs in the nineteen forties, to a developed motorised unit.
  • This motorised unit is typically provided with a so-called floating table top, i.e. a table top which can be moved in a horizontal plane so as to bring a patient supported on the table to a position relative to a beam source.
  • the table top also accommodates an image receptor for conventional analogue filing systems or for digital systems connected for computerised image processing and filing.
  • the front and rear sides of the table top have hitherto been provided with longitadinally extending profiled sections for the purpose of providing bearings required for movement of the table in its longitudinal direction.
  • profiled sections may also be used for mounting different auxiliary devices, such as manoeuvring devices, object supports, compression units, etc.
  • the manoeuvring devices may, e.g., consist of one or more manoeuvring handles and a manoeuvring box, which are often integrated to form a unit.
  • manoeuvring handle enables the table top to be released from a locked state, so as to enable the patient to be positioned relative to a beam or radiation source.
  • Some types of manoeuvring handles can be placed selectively along the table profiled sections and fixed while taking practical and ergonomic requirements into account.
  • the profiled sections on the side edges of the table are normally made of a metal alloy, which enhances table-loading possibilities and limits rolling resistance as the table top is moved, something which also fulfils ergonomic requirements with respect to handling of the table top.
  • a metal alloy which enhances table-loading possibilities and limits rolling resistance as the table top is moved, something which also fulfils ergonomic requirements with respect to handling of the table top.
  • such an alloy is not transparent to X- ray beams for instance. This constitutes a serious drawback from a clinical aspect, namely that the table profile will be recorded on the image.
  • the thicknesses to which the sections must be made would result in sections that gave rise to image disturbances or impairment.
  • the thickness of said material is minimised in order to rriinimise the absorption of radiation by the table top between the side profiles.
  • this thickness reduction with respect to said profiled sections is only possible to a limited extent, for table loading reasons. In other words, it is extremely difficult to avoid image disturbing elements from the profiled sections.
  • the size of the image receptor for X-ray film cassettes corresponds generally to the digital image receptor, the choice of film size is adapted to the size of the object with the intention of saving film.
  • the cassette is normally centred in the image receptor. This increases the need to move the table top transversely, while the fact that the table profiles may therewith coincide with the position of the object relative to the image field makes it necessary to limit the extent of such transversal movement.
  • the need to position the object centrally in the image field is greatly reduced by using in a digital image receptor one and the same image size for different examinations and with varying object sizes. This simplifies many interactive settings of beam source and image receptor, besides reducing the need to move the patient relative to the image receptor.
  • the image disturbing table profile is still a greater drawback than it was earlier.
  • GB 2 057 830.A (Fothergill & Harvey) describes a surgical operating table that con- sists of one or more pivotal panels or sections. Each of these panels can accommodate a receptor unit that can be inserted in the longitudinal direction of respective panels. The panels are mutually hinged and all panels or carried by a stand structure that engages solely one of said panels. The table cannot be displaced longitudinally and/or transversely and its basic construction is totally different from that described above. This known table does not permit exposure across the full width of respective panels.
  • FR 2 110 690.A (Daguillon) describes a table of sandwich construction that includes a totally immovable table top. The table has no receptor and is primarily intended for radiation therapy. This table also lacks any close connection with the in- vention.
  • DK 118 300.B (Philips) describes a patient table for X-ray diagnosis that can be moved in the X- and Y-directions, said table including a stationary receptor placed closely beneath the table.
  • the table is carried by twin frames mounted on a central foot, wherein one frame permits movement of the second frame in the Y-direction and the second frame permits movement of the table in the X-direction.
  • a receptor which is stationary relative to the table top often constitutes a drawback, and this arrangement provides no solution to the aforementioned problems.
  • one object of the invention is to provide an examination table of the kind defined in the introduction with which the full width of the table top can be used for positioning the patient, without needing to move the patient transversely across the table, such movement being liable to cause the patient discomfort or pain, and/or subjecting attendant personnel to non-ergonomic working methods that lead to injury.
  • Another object is to provide an examination table that includes a floating table top which enhances patient accessibility and eliminates the risk of pinching or squeezing of either the patient or the attendant personnel.
  • the table top lacks image disturbing parts along the long sides of the table, image exposure can be effected across the total width of the table top, and therewith the total width of the patient, in any chosen position of the patient, in other words without needing to move the patient transversely of the table in conjunction with the exposure.
  • the patient need not therefore be subjected to discomfort or pain.
  • the attendant personnel may also employ ergonomic working methods duiing the entire examination without needing to risk being subjected to injury as a result of the patient's weight.
  • the table lacks outwardly or upwardly projecting profiled sections, an injured patient can be pulled from a bed to the examination table on a mattress or on some other kind of underlay.
  • the table top is supported on the stand by a frame con- struction that includes supportive elements that extend down to beneath the receptor where the bearing devices for movement of the table top in its longitudinal direction are mounted.
  • the side edges of the table top will no longer be subjected to load, they need not be strengthened by making them thicker and the table top can be constructed entirely so as to achieved the best possible X-ray transparency.
  • One embodiment is characterised in that the long and/or the short sides of the table top have rounded outer profiles to provide a tangential surface that minimises radiation absorption and eliminates image disturbances.
  • Figures 1 and 2 are respectively a perspective view and an end view of an examination table according to the earlier standpoint of techniques.
  • Figures 3 and 4 are corresponding views of an inventive examination table.
  • the reference 1' identifies an examination table for diagnosis by X-ray, ultrasound, magnetic resonance imaging or the like.
  • the table 1 ' includes a stand 2' for vertical movement of a table top 3'. Also illustrated is the ability of the table top to move in the longitudinal direction (X-direction) and trans- versal direction (Y-direction) of the table.
  • Bearings in the form of rollers 6' provided with ball bearings are mounted between the stand 2' and the table top 3' for movement of the table top in its longitudinal direction relative to the stand.
  • Corresponding bearing devices 5' are provided for transverse movement of the table.
  • the bearing devices 6' are accommodated in metal side profiled sections 4' that extend along the side edges of the table top 3'.
  • the bearing devices 6' may co-act with releasable latching devices, for instance release magnets (not shown), which hold the "floating table top" 3' releasably fixed in alternative positions both longitudinally and transversely relative to the stand 2'.
  • manoeuvring grips or hand grips may be gripped by an attendant person or operator in order to move the table top, and the patient carried thereby, to a desired position relative to a beam source (not shown).
  • the table top 3' also carries a receptor or bucky 10' which may also be movable relative to the table top 3'.
  • a serious drawback of the metal sides profiles 4' from a clinical aspect is that they may be recorded on the exposed image, i.e.. cause image interference or disturbance. Moreover, the rollers 6' connected with the side profiles 4' represent serious pinching risks to both patient and personnel.
  • the bearing devices i.e. the rollers 6', are carried by a frame construction 7' fixedly joined to the stand 2'.
  • This frame construction 7' thus accompanies the stand in its vertical movement (Z-direction), while the table top 3 ' is movable relative to the frame T in the X-direction and Y-direction.
  • the table top 3 of the inventive examination table illustrated in Figures 3 and 4 differs from the table top 3' shown in Figures 1 and 2, among other things by the fact that it lacks metal side profiles 4'. Instead, the entire table top 3, including its longitudinal side edges 3 a, is comprised of a material that has good radiation permeabil- ity, e.g. carbon fibres or kevlar. This permits exposure across the full width of the table top 3, without needing to fear image disturbances caused by metal material.
  • a material that has good radiation permeabil- ity e.g. carbon fibres or kevlar. This permits exposure across the full width of the table top 3, without needing to fear image disturbances caused by metal material.
  • the table top 3 carries a cassette receptor or bucky 10, which may also be movable in relation to the table top in this case.
  • the illustrated table top 3 is also a so-called floating table top, i.e. it can be moved both longitudinally and transversely, wherewith the bearing devices 5 for transversal movement may be situated at a different level, preferably a higher level, than corresponding devices used with the known table design.
  • the frame construction 7 supporting the table top 3 is movable in the X-direction relative to the stand 2.
  • the frame construction 7 includes vertically extending support elements 7a which extend downwardly of the receptor or bucky 10, where support elements 7a located in the region of ends of the table top 3 are connected in pairs by longitudinally extending bars 7b which include inwardly facing guides 7c for bearing devices or rollers 6 that enable the table top to move in its longitudinal direction.
  • rollers 6 are located at a lower level will not result in image disturbances either.
  • the bearing devices 5 provided for transversal movement will not cause problems relating to image disturbances, since these bearing devices are located at the end edges of the table top 3.
  • the transverse spacing of the rollers 6 for longitudinal movement is much smaller than the distance in the known table design according to Figures 1 and 2, i.e. the rollers 6 are located at a distance apart which is much smaller than the width of the table top.
  • the table top 3 has a flat upper surface, i.e. it lacks outwardly projecting edges or contours.
  • the long sides 3 a of the table top merge with its short sides via rounded outer portions 3c so as to form a tangential surface which reduces radiation absorption and eliminates image disturbances.
  • the beams emitted in different ways from the radia- tion source have been shown in Figure 2.
  • a downwardly facing groove 9 which, when required, may be provided with one or more contactless operating functions or operating functions that can be activated by touch, for example through the medium of a table grip.
  • the grooves can function for passage of a beam for detection by a sensor (not shown) at one end of the table profile.
  • the means that latch the table top may be released by inserting fingers into the space so as to break the beam.
  • the grooves 9 may accommodate a touchable electric contact strip that releases the table-top latching means when activated.
  • the vertical and inclined arrows in Figure 4 are intended to show that a table top according to the invention enables projection of the radiation source at any chosen angle without the long sides of the table top affecting or impairing the imaging result. If desired, the long and/or the short sides of the table top may be designed for simple application of interchangeable or collapsible collision protectors.

Landscapes

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

Abstract

L'invention concerne une table d'examen destinée à un diagnostic par rayons X, ultrasons, imagerie par résonance magnétique ou des procédés similaires. Cette table comprend un support destiné à supporter un plateau de table (3) pouvant se déplacer dans le sens vertical, longitudinal et transversal. Au niveau de ce plateau de table est logé un récepteur de cassette (10) ou un bucky pouvant se déplacer par rapport au plateau de table. L'ensemble du plateau de table (3), y compris ses bords latéraux longitudinaux (3a), est constitué d'un matériau présentant une bonne transparence au rayonnement de façon à permettre une exposition sur toute la largeur du plateau de table. Ledit plateau de table est soutenu par un cadre support (7) qui comprend des éléments de support (7) s'étendant vers le bas jusqu'en dessous du récepteur (10), où se trouvent des dispositifs de roulement (6) permettant un déplacement longitudinal du plateau de table. La distance entre ces dispositifs de roulement est nettement inférieure à la largeur du plateau de table.
PCT/SE2001/002104 2000-09-28 2001-09-28 Table de patient comprenant un cadre destinee a un diagnostic par rayons x WO2002026137A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001292484A AU2001292484A1 (en) 2000-09-28 2001-09-28 A patient table with a frame designed for x-ray diagnostic

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0003479A SE517397C2 (sv) 2000-09-28 2000-09-28 Patientbord och stativ med strålningsgenomsläppliga längsgående kanter
SE0003479-3 2000-09-28

Publications (1)

Publication Number Publication Date
WO2002026137A1 true WO2002026137A1 (fr) 2002-04-04

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ID=20281202

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002104 WO2002026137A1 (fr) 2000-09-28 2001-09-28 Table de patient comprenant un cadre destinee a un diagnostic par rayons x

Country Status (3)

Country Link
AU (1) AU2001292484A1 (fr)
SE (1) SE517397C2 (fr)
WO (1) WO2002026137A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005025423A1 (fr) * 2003-09-17 2005-03-24 Koninklijke Philips Electronics, N.V. Table telescopante

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK118300B (da) * 1966-11-23 1970-08-03 Philips Nv Patientbord til røntgendiagnostik.
US4146793A (en) * 1972-07-27 1979-03-27 Siemens Ag X-ray devices using epoxy resins strengthened with carbonic fibrous material
US4991243A (en) * 1986-10-29 1991-02-12 Rottermann Ag Radiation-permeable body support
SE503047C2 (sv) * 1994-07-28 1996-03-18 Ao Medical Products Ab Sätt vid röntgenfotografering samt med receptorenhet försett patientbord

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK118300B (da) * 1966-11-23 1970-08-03 Philips Nv Patientbord til røntgendiagnostik.
US4146793A (en) * 1972-07-27 1979-03-27 Siemens Ag X-ray devices using epoxy resins strengthened with carbonic fibrous material
US4146793B1 (fr) * 1972-07-27 1985-03-19
US4991243A (en) * 1986-10-29 1991-02-12 Rottermann Ag Radiation-permeable body support
SE503047C2 (sv) * 1994-07-28 1996-03-18 Ao Medical Products Ab Sätt vid röntgenfotografering samt med receptorenhet försett patientbord

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005025423A1 (fr) * 2003-09-17 2005-03-24 Koninklijke Philips Electronics, N.V. Table telescopante
US7357575B2 (en) 2003-09-17 2008-04-15 Koninklijke Philips Electronics N.V. Telescoping table

Also Published As

Publication number Publication date
SE0003479D0 (sv) 2000-09-28
SE517397C2 (sv) 2002-06-04
AU2001292484A1 (en) 2002-04-08
SE0003479L (sv) 2002-03-29

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