EP0190782A2 - Abfedereinrichtung für Krankentragen im Krankenwagen - Google Patents

Abfedereinrichtung für Krankentragen im Krankenwagen Download PDF

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Publication number
EP0190782A2
EP0190782A2 EP86200075A EP86200075A EP0190782A2 EP 0190782 A2 EP0190782 A2 EP 0190782A2 EP 86200075 A EP86200075 A EP 86200075A EP 86200075 A EP86200075 A EP 86200075A EP 0190782 A2 EP0190782 A2 EP 0190782A2
Authority
EP
European Patent Office
Prior art keywords
support table
stretcher support
hinged
quadrilaterals
floor
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Withdrawn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
EP86200075A
Other languages
English (en)
French (fr)
Other versions
EP0190782A3 (de
Inventor
Ezio Menna
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0190782A2 publication Critical patent/EP0190782A2/de
Publication of EP0190782A3 publication Critical patent/EP0190782A3/de
Withdrawn legal-status Critical Current

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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
    • A61G3/00—Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
    • A61G3/006—Means for reducing the influence of acceleration on patients, e.g. suspension systems of platforms

Definitions

  • This industrial invention patent relates to a device for absorbing and attenuating the shaking and jolting which during motor ambulance journeys are transmitted to the stretchers on which the ill or injured persons lie.
  • damping devices for stretchers are available for this specific sector, but they have the drawback of requiring lengthy, complicated and costly modifications to the respective motor vehicles to which they are fitted, because of the fact that motor ambulances derive from van-type motor vehicles which are not specifically constructed for such use.
  • damping devices have the drawback of being permanently in the sprung condition, which makes the stretcher loading and unloading operations difficult.
  • This patent provides and protects a device for obviating the aforesaid within the framework of a simple and rational structure.
  • the proposed device comprises a stretcher support table supported by the floor of a motor ambulance by means of four identical lever systems each comprising three bars, said lever systems being situated at the four corners of the stretcher support table in a manner aligned coplanar in pairs.
  • each group of three bars constitutes, in combination with the stretcher support table, an articulated quadrilateral which together with the other three quadrilaterals moves the stretcher support table orthogonally to the floor so as to alternately dispose it in a lowered position in which the table rests on the floor,and in a raised position in which the table is damped.
  • the shortest bar of each articulated quadrilateral namely the bar opposite the stretcher support table, is hinge-connected to the floor by way of an extension to said bar situated external to the quadrilateral to which it pertains.
  • the pneumatic cylinder-piston unit for controlling said intermediate element according to the invention can comprise, connected between its operating chamber and the respective compressed air source, a buffer vessel which according to the invention provides an elastic cushion enabling the stretcher support table to adapt to the weight of the person lying on the stretcher, and also enabling the said table to undergo damping of the shaking and jolting to which the floor is subjected.
  • a stretcher support table 2 shown diagrammatically for reasons of clarity, is located on said floor 1 in such a manner as to be able to rise parallel to itself, orthogonally to said floor 1.
  • the table 2 is provided with suitable guides for sliding a stretcher, not shown, and convenient means for locking this latter.
  • the stretcher support table 2 is provided with two longitudinal descending walls 3, their purpose being to mask the devices situated below the stretcher support table 2 when this latter is raised (see Figure 4).
  • the height of the plates 4 is slightly less than the height of the walls 3 so that these latter rest directly on the floor 1 when the table is completely lowered.
  • said table 2 and said floor 1 are connected together by four identical lever systems situated at the corners of the stretcher support table 2, and aligned in pairs longitudinally so as to be coplanar.
  • each lever system constituted by three levers or bars, defines together with the stretcher support table 2 an articulated quadrilateral as described in detail hereinafter.
  • each lever system comprises a longitudinally rocking lever 5 which is hinged at its base ( Figures 1, 2) to the floor 1 on a transverse shaft 6, and at its top is hinged at 7 to the longer arm of a L-shaped lever 8 having its dihedron facing the floor 1.
  • the lever 8 is hinged at 9 to the overlying stretcher support table 2, the shorter arms of two of the L-shaped levers 8 situated on the same side of the stretcher support table 2 being connected together by a connecting rod 11 provided with respective end hinges 10 ( Figures 1 to 4).
  • Said connecting rod 11 causes the four articulated quadrilaterals of the invention to be subjected to the same movements.
  • a bar 13 has one end hinged to a central point 12 of each lever 5, and its other end hinged at 14 to the underside of the stretcher support table 2.
  • each group of four hinged connections (12, 7, 9, 14) defines one of said articulated quadrilaterals.
  • the shorter arms of the two L-shaped levers 8 which are situated to the right in Figures 1 to 3 are connected together lowerly by a transverse pin 15, to which two salient triangular plates 16 are hinged.
  • the two plates 16 are connected together by a pair of transverse pins 17, 21, to the first of which there is hinged a connecting rod 18, the other end of which is hinged at 19 to a cross-member 20.
  • a pneumatic service installation is provided for said cylinder-piston unit 22, said installation comprising as shown in Figure 5 a compressor unit 24 which is connected to a compressed air receiver 25 by way of a non-return valve 26.
  • a raising/lowering switch 33 is connected into the electrical feed line 32 to the solenoid valve 28, and a raising pushbutton 35, a rise limit switch 36 and a corresponding warning lamp 37 are connected into the electrical feed line 34 of the solenoid valve 27.
  • an automatic cut-out device 39 for the compressor 24 is connected into the electricity supply 38 of this latter.
  • the lines 32 and 38 are connected respectively to the ambulance battery and to its instrument board.
  • the stretcher support table 2 When the stretcher support table 2 is switched to rise, which as stated initially it does by moving parallel and orthogonal to the floor 1 by virtue of the special connections and configurations of the articulated quadrilaterals which control its excursional movements, see in particular the vertical straight lines A, B shown on drawing 1/3, the two solenoid valves 27, 28 switch-over to connect the receiver 25 to the buffer vessel 29 and to the cylinder piston unit 22.
  • This latter vessel therefore provides an air cushion which keeps the stretcher support table 2 sprung or damped, so making the journey of an ill or injured person particularly comfortable.
  • the purpose of the elements 16, 18 is to increase the damping resistance of the unit 22 during the terminal part of the downward sprung movements.
  • hinged connections of the invention incorporate an interposed elastic cylindrical member such as a rubber bush, so that the damping of the stretcher support table 2 is further improved, and the hinged connections are prevented from generating noise during the sprung movement of the table 2.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Vibration Prevention Devices (AREA)
EP86200075A 1985-02-05 1986-01-17 Abfedereinrichtung für Krankentragen im Krankenwagen Withdrawn EP0190782A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4680885 1985-02-05
IT46808/85A IT1187768B (it) 1985-02-05 1985-02-05 Dispositivo per l'ammortizzazione delle barelle delle autolettighe in genere

Publications (2)

Publication Number Publication Date
EP0190782A2 true EP0190782A2 (de) 1986-08-13
EP0190782A3 EP0190782A3 (de) 1987-09-23

Family

ID=11258970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86200075A Withdrawn EP0190782A3 (de) 1985-02-05 1986-01-17 Abfedereinrichtung für Krankentragen im Krankenwagen

Country Status (2)

Country Link
EP (1) EP0190782A3 (de)
IT (1) IT1187768B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0278547A2 (de) * 1987-02-06 1988-08-17 STEM S.r.l. Bett für Krankentransportfahrzeuge mit Abfederung und einstellbarer Neigung
WO1995013043A1 (de) * 1993-11-11 1995-05-18 Schmerler, Detlev Hydrauliksystem für die hydraulische betätigung eines krankenwagen-hubtisches
DE4415760C1 (de) * 1994-04-30 1995-08-17 Michael Bendich Fahrzeugbau Verfahren zum gesteuerten Heben und Senken des Fahrzeughecks eines Behindertentransportkraftwagens (BTW)
US6729667B2 (en) * 2001-10-16 2004-05-04 Howard Wright Limited Stretcher suspension linkages

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096321A5 (de) * 1970-06-16 1972-02-11 Burgt Gerrit V D
EP0021526A2 (de) * 1979-06-15 1981-01-07 Automobielbedrijf Unihef B.V. Krankenwagen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096321A5 (de) * 1970-06-16 1972-02-11 Burgt Gerrit V D
EP0021526A2 (de) * 1979-06-15 1981-01-07 Automobielbedrijf Unihef B.V. Krankenwagen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0278547A2 (de) * 1987-02-06 1988-08-17 STEM S.r.l. Bett für Krankentransportfahrzeuge mit Abfederung und einstellbarer Neigung
EP0278547A3 (de) * 1987-02-06 1989-07-12 STEM S.r.l. Bett für Krankentransportfahrzeuge mit Abfederung und einstellbarer Neigung
WO1995013043A1 (de) * 1993-11-11 1995-05-18 Schmerler, Detlev Hydrauliksystem für die hydraulische betätigung eines krankenwagen-hubtisches
US5701618A (en) * 1993-11-11 1997-12-30 Brugger; Klaus Hydraulic system for hydraulically actuating an ambulance lifting table
DE4415760C1 (de) * 1994-04-30 1995-08-17 Michael Bendich Fahrzeugbau Verfahren zum gesteuerten Heben und Senken des Fahrzeughecks eines Behindertentransportkraftwagens (BTW)
US6729667B2 (en) * 2001-10-16 2004-05-04 Howard Wright Limited Stretcher suspension linkages

Also Published As

Publication number Publication date
IT8546808A0 (it) 1985-02-05
EP0190782A3 (de) 1987-09-23
IT8546808A1 (it) 1986-08-05
IT1187768B (it) 1987-12-23

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