Beds – Field stretcher – Combined or convertible
Patent
1995-05-17
1996-11-12
Grosz, Alexander
Beds
Field stretcher
Combined or convertible
5625, 296 20, A61G 102, A61G 1017
Patent
active
055727565
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to an ambulance stretcher for transportation of patients.
A conventional ambulance stretcher usually has two longitudinal frame beams with connecting cross-brackets, which form a supporting frame with bearing wheels in order to facilitate placing the stretcher onto the underframe in the ambulance. Such an underframe in an ambulance can usually be pulled outwardly from the inside of the ambulance. Further, these known stretchers have telescopically adjustable handles at each end of both frame beams. In addition, a chair is usually provided in the ambulance to enable carrying a patient in narrow places. On leaving the ambulance to fetch a patient who is to be transported, one does not always know beforehand whether the patient has to be transported in prone or in sitting position. Furthermore, sometimes the lack of space can make the use of a conventional normal ambulance stretcher very complicated or even impossible. This often leads to situations where, for instance, one leaves the ambulance with a carrying stretcher and establishes on reaching the patient that the situation calls for a carrying chair, which means an extra visit to the ambulance. Therefore, an aim of the invention is to produce an ambulance stretcher for transportation of patients which makes it possible to readily convert the stretcher into, a carrying chair, whereby the extra visit to the ambulance is avoided.
BRIEF DESCRIPTION OF DRAWINGS
In the following, the invention is presented with reference to the enclosed drawings, wherein:
FIG. 1 is a diagrammatic side view of a stretcher, as per the invention, in normal stretcher position,
FIG. 2 is a diagrammatic top view of a stretcher, as per FIG. 1, where the patient bed is taken off,
FIG. 3 is a diagrammatic side view of a stretcher, as per the invention, turned into a carrying chair position, and
FIG. 4 is a diagrammatic perspective view of a modified construction of a supporting frame of a stretcher in accordance with the invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
According to FIGS. 1-3, the stretcher has two longitudinal frame beams 2 with an articulated part 20 that divides the frame beams into two parts 3a and 3b. The parts 3a and 3b of the frame beams are rigid and so dimensioned that the frame beam part 3b at the patient head end is substantially longer than the frame beam part 3a at the patient foot end. The ratio of the length 3b:3a is, advantageously about 6:1 to 3:1, and suitably about 4.5:1. The frame beams 2 are joined together with cross-brackets 18, which form together with the frame beams 2 a supporting frame. On top of the supporting frame a patient bed is arranged, which is formed of several parts 4, 5, 6, 7 that are furnished with articulated parts 8, 9, 10 enabling adjustment of the patient bed into a wanted position. In addition, the patient bed is fitted with supporting means 11, 12, 13 in the supporting frame and which, in the illustrated embodiment, are joined to parts 5 and 7 of the patient bed. There can, of course, be a greater number of such supporting means, their construction being such as to allow turning the different parts of the patient bed into wanted angular positions. For instance, the patient head end 7 of the patient bed is advantageously furnished, on both sides, with a supporting rod (not shown), which is at one end articulated close to the top end lower edge (the outmost top end edge) and at its other end articulated in the frame beam part 3b. In addition, this support rod is advantageously furnished with handles at the head end in order to facilitate carrying the stretcher in sitting position. The articulated point 20 in part 3b of the frame beam is advantageously furnished with locking means, by means of which the stretcher is made more rigid in its sitting position. At both ends of frame beam 2 there are bearing wheels 14, which are mostly used to facilitate the placing of the stretcher into the ambulance. Usually, the ambulance is furnished with a stretcher underframe with locking m
REFERENCES:
patent: 2203045 (1940-06-01), Buntin
patent: 2348210 (1944-05-01), Friedlander
patent: 2400155 (1946-05-01), Letschert et al.
patent: 3289219 (1966-12-01), Ferneau et al.
Muuranen Martti
Vuorenoja Eero
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