WO1987003193A1 - Dispositif permettant d'accoupler un objet, notamment une table portant un patient, avec un premier et un second support - Google Patents

Dispositif permettant d'accoupler un objet, notamment une table portant un patient, avec un premier et un second support Download PDF

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Publication number
WO1987003193A1
WO1987003193A1 PCT/SE1986/000539 SE8600539W WO8703193A1 WO 1987003193 A1 WO1987003193 A1 WO 1987003193A1 SE 8600539 W SE8600539 W SE 8600539W WO 8703193 A1 WO8703193 A1 WO 8703193A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
holder
rocker
sleeve
coupling sleeve
Prior art date
Application number
PCT/SE1986/000539
Other languages
English (en)
Inventor
Anders Lennart Sandell
Original Assignee
Arjo Hospital Equipment 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 Arjo Hospital Equipment Ab filed Critical Arjo Hospital Equipment Ab
Publication of WO1987003193A1 publication Critical patent/WO1987003193A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1049—Attachment, suspending or supporting means for patients
    • A61G7/1057—Supported platforms, frames or sheets for patient in lying position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/80—General characteristics of devices with special adaptations, e.g. for safety or comfort for connecting a trolley to a device, e.g. bed or column table

Definitions

  • the present invention relates to a coupling de ⁇ vice for coupling an object, especially a seat or table device, with a first and/or a second holder, comprising a coupling member on the object and lock- ing means for locking the coupling member to the first and/or the second holder, one holder being sleeve-shaped and the other holder pin-shaped.
  • the invention relates more particularly to a coupling device for the automa ⁇ tic coupling of a seat or table device with a holder on a first implement and simultaneous automatic re ⁇ lease of the object from a holder on a second imple ⁇ ment, and conversely.
  • a bedridden patient When, e.g. in the care in a hospital, a bedridden patient is to have a bath, it is desirable to be able to avoid first having to transfer the patient from the bed to a transport carriage having a supporting table or stretcher and a wheeled chassis, and thereafter to another table that can be sunk into the bath by means of a lifting device.
  • the patient- supporting table, the wheeled chassis and the lifting device are so devised that the same table can be mounted on and dismounted from both of these implements. This means that the handling of the patient is considerably facilitated since it is easier to transfer a table with a patient thereon than the patient alone.
  • the table In order to obviate the risk of the table loosening or tilting in an uncontrolled manner during such trans ⁇ fer, the table must be locked all the time to at least one of the implements, which means that it must be locked to the second implement before being released from the first.
  • Present-day devices for the optional coupling of a patient-supporting table or a stretcher with different implements therefore often comprise two separate locking means, one for each implement, which implies a rather complex and, hence, expensive con ⁇ struction.
  • US-A-3,631,546 discloses a device for the optional coupling of a stretcher with different implements.
  • This prior art coupling device offers the advantage over other known coupling devices of having a common locking means for both implements.
  • This locking means consists of'transverse cylinders which are mounted on the stret ⁇ cher and one of which is eccentrically rotatable, i.e. the distance between the cylinders can be varied, and of recesses in the implements for the cylinders.
  • the recesses are arranged on the outer and inner sides of the implements.
  • One object of the present invention is to pro- vide a coupling device which is of a simple and re ⁇ liable construction and, thus, will be inexpensive to manufacture and have long service life.
  • Another object of the invention is to provide a coupling device which ensures a completely safe transfer of an object, particularly a seat or table device, from a first holder to a second holder, and conversely.
  • Yet another object of the present invention is to provide a coupling device which permits automatic (and not manual) coupling of an object with a first holder and simultaneous automatic release of the object from a second holder, and conversely.
  • Fig. 1 is a cross-section of the coupling device accord ⁇ ing to the present invention.
  • Fig. 2 illustrates the coupling device of Fig. 1 when coupling a supporting table with a piston rod on a chassis.
  • Fig. 3 shows the coupling device of Fig 1 when coupling the table with the piston rod and with the lifting arm of a lifting device.
  • Fig. 4 is a cross-section taken along the line IV-IV in Fig. 3.
  • Fig. 5 shows the coupling device of Fig. 1 when only coupling the table with the lifting arm.
  • Fig. 6 is a cross-section taken along the line VI-VI in Fig. 5, and
  • Fig. 7 shows from above a locking bolt included in the coupling device of Fig. 1 when engaging the lifting arm.
  • the coupling device shown in Fig. 1 consists of a coupling sleeve 1, a locking pin 3 and a locking bolt 4 which consists of a body 40 having a through slot 41 of rectangular cross-section (Fig. 7).
  • the coupling sleeve 1 has a central through bore and is fixedly connected e.g. to a patient-supporting table 2.
  • the coupling sleeve 1 has three portions of different outer and inner dia- meters, of which the upper portion 5, which is located adjacent the underside of the table 2, has a constant outer diameter and an inner diameter which is constant closest to the table but thereafter progressively increases in a direction away from the table.
  • This portion further has a horizontal through bore 8 ex ⁇ tending transversely through the entire coupling sleeve 1.
  • the locking pin 3 is fixedly mounted in the bore 8 such that its free outer end extends a certain distance into the central bore of the coupling sleeve.
  • the intermediate sleeve portion 6 has an inner diameter which progressively increases in a direction away from the table and an outer diameter which de ⁇ creases in the same direction.
  • the lower portion 7 of the coupling sleeve 1 however has a constant inner diameter and an outer diameter which progressively increases in a direction towards the table.
  • This por ⁇ tion is further provided with a circumferential groove 5 9 extending around the entire outer periphery of the portion 7.
  • a through bore 10 extends from the bottom of the groove 9.
  • the bore 10 also communicates with an axial recess provided in the wall of the coupling sleeve 1 and extending from the upper end of the sleeve downwards to the bore 10.
  • a T-shaped rocker 12 is pivotally mounted in the coupling sleeve 1 by means of a journal 13 in such a manner that its web 14 extends through the axial recess 11 downwards into the slot 41 of the locking bolt 4 while its flange 15 partially extends through the horizontal bore 8.
  • the flange 15 is so arranged in the bore 8 that its outwardly facing end projects a certain distance from the outer face of the coupling sleeve 1 while its inwardly facing end is located approximately in the middle of the central bore of the coupling sleeve 1.
  • the outwardly facing end of the flange 15 is provided on its side facing away from the table 2 with a set screw 16 whose head can be positioned at a predetermined distance from the flange 15.
  • the inwardly facing end of the flange 15 is provided on its side facing away from the table 2 with a compression spring 17 the free end of which extends a certain distance downwards in the central bore of the coupling sleeve 1.
  • the web 14 of the rocker 12 is pivotally connected at its free end to the locking bolt 4 by means of a journal 18.
  • the locking bolt 4 is movable in the through bore 10 which serves as a guide for the locking bolt.
  • the locking pin 3 fixedly mounted in the bore 8 is disposed on the opposite side of the central bore of the coupling sleeve 1 with respect to the rocker 12.
  • the table 2 has a through bore above the rocker 12 so as not to prevent the pivotal movement of the rocker about the journal 13.
  • FIG. 2 shows the coupling device when a piston rod 20 on a wheeled chassis (not shown) is locked in the coupling sleeve.
  • the piston rod 20 has a groove 21 for receiving the locking bolt 4, and at the upper end a groove 22 extending across its entire width, for receiving both the flange 15 of the rocker 12 and the locking pin 3, and a central, axially conical bore 23 for receiving the compression spring 17.
  • the upper end portion of the piston rod 20 is upwardly tapering and that the outer diameter of this end portion con ⁇ forms to the inner diameter of the upper portion of the coupling sleeve 1, which entails that there is no play between the table 2 and the piston rod 20 when the piston rod is locked to the coupling sleeve.
  • the piston rod rotate in this position, since both the locking pin 3 and the locking bolt 4 lock the piston rod 20 against rotation relative to the coupling sleeve 1.
  • the locking pin 3 is not necessary for locking the piston rod, but that it extends the life of the lock ⁇ ing bolt 4 by reducing the loads which would other ⁇ wise act thereon.
  • the rocker 12 In this coupling position, the rocker 12 is af- fected both by the spring 19 and the compression spring 17 acting so as to pivot the rocker clockwise and anticlockwise, respectively. Since the spring tension of the compression spring 17 exceeds that of the spring 19, the rocker will pivot anticlockwise until the web 14 of the rocker 12 abuts the upper edge of the internal slot 41 of the locking bolt 4.
  • This position of the rocker 12 is referred to in the following as the left-hand end position of the rocker. In this position, ( the locking bolt 4 only engages with the groove 21 on the outer face of the piston rod 20.
  • Fig. 3 shows the coupling device with the coup- ling sleeve 1 and, thus, the table 2 locked to both the piston rod 20 and a lifting arm 25 on a lifting device (not shown).
  • the lifting arm 25 is provided at its free end with two fork shanks 26, 27 which in the position shown in Fig. 3 engage around the coupling sleeve 1. These fork shanks have an internal groove 28 for receiving the locking bolt 4.
  • the rocker 12 is acted on both by the spring 19 and the compression spring 17, but cannot pivot through such a large angle anticlockwise as in Fig.
  • Fig. 4 illustrates that stated above, namely that the journal 13 of the rocker 12 is mounted in the coupling sleeve 1, that the lower end of the web 14 of the rocker 12 is located in the slot 41 in the locking bolt 4, and that the locking bolt 4 is pivotal ⁇ ly connected to the web 14 by means of a journal 18.
  • the hole provided in the web 14 for receiving the journal 18 is oval, which means that there is a certain play between the journal and the web in the longitu ⁇ dinal direction thereof.
  • FIG. 5 shows the coupling device with only the lifting arm 25 locked to the coupling sleeve 1.
  • the rocker 12 is acted on only by the spring 19 which loads the rocker for pivot ⁇ ing clockwise until the free end of the web 14 engages 8 the body 40 of the locking bolt 4.
  • this position of the rocker 12 will be referred to as the clockwise end position of the rocker 12.
  • Fig. 7 shows an embodiment of the locking bolt 4, in which the body 40 of the locking bolt consists of a cylindrical part 42 and an arcuate flange 43.
  • the flange 43 engages with the groove 28 in the fork shanks 26, 27 of the lifting arm 25, while the free end of the cylindrical part 42 is intended to engage with the groove 21 in the outer face of the piston rod 20.
  • the locking pin 4 engages the lifting arm 25 with an engagement surface having a greater longitudinal extent than the spacing between the free outer ends of the fork shanks 26, 27, the coupling sleeve 1 and, hence, the table 2 can be rotated relative to the lifting arm 25 without any risk of the locking bolt being released from the groove 28. This possibility of rotation makes it easier to bring the table into the desired posi- tion.
  • rocker 12 is also acted on by the spring 19 and the compression spring 17 tending to pivot the rocker clockwise and anticlockwise, respectively. Since the lifting force from the lifting arm 25 and the spring 19 together act on the rocker with a larger force than the spring 17, the rocker will be pivoted clockwise until the spring tension of the spring 17 - which force increases during the pivotal movement of the rocker since the spring 17 is compressed in the bore 23 of the piston rod 20 when the rocker pivots clockwise - becomes equal to the total force of the spring 19 and the lifting arm 25. The rocker 12 will then occupy the stable intermediate position shown in Fig. 3.
  • the locking bolt 4 is thus brought out of its engagement with the piston rod 20, whereby the coupling sleeve 1 will be disengaged from the piston rod 20 when this is further lowered, and in this position, the coupling sleeve 1 thus is locked only to the lifting arm 25, see Fig. 5.
  • the piston rod When the table 2 should instead be transferred from the lifting arm 25 to the piston rod 20 on the wheeled chassis, the piston rod is first moved from below up into the central bore of the coupling sleeve 1.
  • the introduction of the piston rod in this central bore is facilitated in that both the piston rod and the central bore are frustoconical, which means that it is possible to have a play-free connection between the piston rod and the central bore of the coupling sleeve when the piston rod is locked to the coupling sleeve.
  • a relatively large play is obtained between their mutually facing surfaces at the beginning of the introduction of the piston rod.
  • the compression spring 17 of the rocker 12 is introduced in the bore 23 in the upper end of the piston rod 20 when the piston rod is introduced in the central bore, the former introduction process being facilitated in that the bore 23 is conical. Further introduction of the piston rod 20 in the coup ⁇ ling sleeve 1 of course entails that the compression spring 17 is compressed, such that its tension will progressively increase. When this spring tension exceeds that of the spring 19, the rocker will pivot anticlock ⁇ wise about the journal 13 until the head of the set screws 16 engages the upper end surface of the fork shank 27, see Fig. 3.
  • This pivotal movement of the rocker 12 entails that the locking bolt 4 is also moved into engagement with the groove 21 on the outer face of the piston rod 20, and the coupling sleeve is thereafter locked both to the lifting arm 25 and the piston rod 20.
  • the engagement of the set screw 16 against the fork shank 27 prevents all further pivotal movement of the rocker 12 until the piston rod 20 comes into mechanical contact with the rocker 12 and starts lifting the rocker and its set screw 16 from the lifting arm.
  • the spring 17 may then again pivot the rocker 12 anticlockwise, such that the locking bolt 4 is brought out of its engagement with the groove 28 in the lifting arm 25.
  • the table may be replaced by a chair to be transferred from a wheeled frame e.g. to a lifting device.

Landscapes

  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Operated Clutches (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

Dispositif permettant d'accoupler un objet (2), notamment un siège ou une table, avec un premier et/ou un second support (20, 25). Le dispositif comprend un organe d'accouplement (1) sur l'objet et un moyen de verrouillage (4) pour bloquer l'organe d'accouplement sur le premier et/ou le second support. Un support (25) est en forme de manchon et l'autre support (20) est en forme de broche. L'organe d'accouplement comprend un manchon d'accouplement (20) possédant un alésage central, et le support en forme de broche (20) peut être verrouillé dans l'alésage central du manchon d'accouplement (1) tandis que le support en forme de manchon (25) peut être verrouillé de l'autre côté du manchon d'accouplement (1).
PCT/SE1986/000539 1985-11-25 1986-11-25 Dispositif permettant d'accoupler un objet, notamment une table portant un patient, avec un premier et un second support WO1987003193A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8505563-0 1985-11-25
SE8505563A SE8505563L (sv) 1985-11-25 1985-11-25 Kopplingsanordning for hopkoppling av ett foremal, serskilt en sitt- eller ligganordning, med en forsta och en andra hallare

Publications (1)

Publication Number Publication Date
WO1987003193A1 true WO1987003193A1 (fr) 1987-06-04

Family

ID=20362236

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1986/000539 WO1987003193A1 (fr) 1985-11-25 1986-11-25 Dispositif permettant d'accoupler un objet, notamment une table portant un patient, avec un premier et un second support

Country Status (3)

Country Link
EP (1) EP0247137A1 (fr)
SE (1) SE8505563L (fr)
WO (1) WO1987003193A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0738506A1 (fr) * 1995-04-18 1996-10-23 Stierlen-Maquet Aktiengesellschaft Système mobile de support pour malade

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1158663B (de) * 1959-10-09 1963-12-05 Stierlein Werke Ag Operationstisch
US3362704A (en) * 1964-03-21 1968-01-09 Stierlen Werke Ag Operating table with transportable upper part
SE325993B (fr) * 1967-12-22 1970-07-13 H Johansson
US3631546A (en) * 1969-03-13 1972-01-04 Hydraul Verken Ab Device for optional coupling of a stretcher with different implements
DE2812074B1 (de) * 1978-03-20 1979-05-17 Siemens Ag Untersuchungseinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1158663B (de) * 1959-10-09 1963-12-05 Stierlein Werke Ag Operationstisch
US3362704A (en) * 1964-03-21 1968-01-09 Stierlen Werke Ag Operating table with transportable upper part
SE325993B (fr) * 1967-12-22 1970-07-13 H Johansson
US3631546A (en) * 1969-03-13 1972-01-04 Hydraul Verken Ab Device for optional coupling of a stretcher with different implements
DE2812074B1 (de) * 1978-03-20 1979-05-17 Siemens Ag Untersuchungseinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0738506A1 (fr) * 1995-04-18 1996-10-23 Stierlen-Maquet Aktiengesellschaft Système mobile de support pour malade

Also Published As

Publication number Publication date
EP0247137A1 (fr) 1987-12-02
SE8505563L (sv) 1987-05-26
SE8505563D0 (sv) 1985-11-25

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