bodycare puter:

BodyCare serien:

Bioformâ Dynamic Plus

 

 

BodyCare Bioform Dynamic Plus er CE merket og kvalitetssikret etter følgende

standard: UNI EN ISO 9001 og UNI EN 46001 med sertifikat nr. 1619

 

BodyCare BioformâDynamic Plus er en anatomisk utformet 

antidecubitussittepute for optimal sittekomfort,  stabilitet

og maksimal trykkfordeling. 

 

Ytterbelegget er av transparent  høyelastisk polyuretanfilm med en

tykkelse på 300 m. Den er antibakteriell og antiallergi behandlet,

har ingen skjøter eller kanter og er vannavstøtende.

 

Putematerialet består av Levagelâ.  En spesial gele oppbygget

på uretan-basis som er meget elastisk og har en unik temperatur

stabiliserende egenskap, Levagelâ-laget  er utformet med en

overflate av  celler/ totter som har forskjellig  materialtetthet for å

oppnå  maksimal trykkavlastning,  trykkfordeling og stabilitet.

Cellene vil stimulerer blodsirkulasjonen og er plassert slik at

luften sirkulerer fritt og huden holdes tørr, dermed vil klamhet

forhindres og sådannelser hemmes.  Levagelâ-laget  er  plassert

over en anatomisk formet  base av  mikrocellulær  polyuretan. 

Materialvalget gir en signifikant støt- og vibrasjons dempende

effekt. Sitteputen og putetrekket  har et sklisikkert underlag.

 

Tilbehør: Plansete anbefales ved hengesete. Putetrekket

kan vaskes.  Det er laget i grå/ sort bomulls lycra blanding med

bærehåndtak.  Tester klassifiserer puten til å  være en av de 

beste trykkavlastnings puter på  markedet for passive brukere. 

Putens egenskaper er like gode for tynne  brukere som for

brukere opp til  100 kg.

 

 

Bioformâ Dynamic Plus  har en høyde på 8 cm og  leveres i tre størrelser:

                        Bredde   Dybde: Total vekt  Hjm.nr:    Artikkel.  nr :       

                                37 cm    40 cm    2900 gr      014536   33303-20237P

40 cm    42 cm    3100 gr      014537   33303-20240P

43 cm    45 cm    3900 gr      014538   33303-20243P

 

 

BioformâDynamic

 

 

BodyCare Bioformâ Dynamic er CE merket og kvalitetssikret etter følgende

standard: UNI EN ISO 9001 og UNI EN 46001 med sertifikat nr. 1619

1. Introduction Levagel is a new patented class of highly elastic polyurethane gels. The gel represents a physical state whose properties lie between liquid and solid. It is formed by a three-dimensional network structure dipersed in a homogeneous liquid phase. Both the network and the liquid phase penetrate each other. In Levagel the dispersed network is formed by the reaction of a polyfunctional polyol with a polyisocyanate. Due to the low isocyanate index, part of the reaction product remains at a lower molecular weight (which still allows a certain limited flowability) and functions as a dispersant, which is caught and immobilized in the network. Due to the nature of the polyol, the “strings” which form the dispersed network are very flexible. They give Levagel a considerable degree of dimensional stability and highly elastic character. Nevertheless, as the dispersant phase still has a certain amount of flowability, Levagel is valuable for applications which require a high level of pressure distribution or shock absorption capabilities. Levagel does not need the monomeric plasticisers which are typically used for gelling polymer powders. Therefore, Levagel will not lose its elasticity and gradually become brittle through plasticiser migration. The softness, elasticity and tear strengh of the gel can be widely varied. Important additional benefits to be considered in the concept of possible applications of Levagel are its excellent adhesion to many substrates (such as inserts, filler particles or surface laminating films or textiles), the precise reproduction of mould surfaces and the easy demoulding of undercuts. Due to the “jelly-like” characteristics of Levagel, a covering material must be used. If the covering material is damaged, however, the gel will not flow out. The properties of the finished part strongly depend on the kind of covering. 2. Gel formation The gel is formed by two-component processing of the Levagel raw materials. A catalyst may be used, if necessary, as part of the polyol component. The amount of polyisocyanate (= isocyanate idex) determines the degree of elasticity or flowability and the softness of the gel. Figures 1-3 show the influence of the isocyanate index. TabTabel 1:  Final value as a function of isocynate index Isocynate index Modulus of elasticity G' 40 45 50 2.6*10E3 Pa 2.3*10E4 Pa 9.4*10E4 Pa 3. Applications A number of applications in the sport and medical fields benefit from the excellent pressure distribution and shock absorpotion properties of Levagel. bicycle saddles pads for riding saddles orthopaedic seats for wheelchairs antidecubitus cushions for chair or bed-ridden patients Other possible innovative fields of application might be: seats, back rests, arm rests of office chairs for maximun sitting comfort tractor seats and truck seats sports shoes 4. Mechanical testing 4.1Gel softness index The gel softness index is determined directly on the gel. Any covering material must be removed. Test equipment: penetrometer, type PNR 10 Petrotest Instruments GmbH & Co Kg Symeonstraße 2a, D-12279 Berlin A cylindrical block of gel (h = 8 cm, Ø = 6 cm) is loaded after 1 hour and 24 hours with the end of a piston (weight: 600 g). The softness index is then determined as the indentation depth of the piston (reading taken after 10 seconds). Table 2: Softness as a function of isocynate index and reaction time (readings after 10 seconds) Reaction time Isocynate index Identation depth 1 hr 24 hrs 40 liquid liquid 45 13.1 7.5 50 10.6 4.9 mm mm 4.2 Load-bearing characteristics of a wheelchair cushion Since the covering material (elastomeric film or textile fabric) greatly influences the cushion's integral properties, the load bearing tests must be conducted with the complete cushion. Testing the gel without the covering is meaningless. 4.2.1 Static compression set This test determines the compression set (figure 4) remaining after deformation of the cushion by loading it for 100 hours with a hemispherical weight (diameter: 25cm) of 35 kg. A typical result is shown in Table 3 and in figure 4. Table 3:Typical result with a commercial Levagl cushion Initial thickness 47 mm Spontaneous recovery (immediately after removal of the weight) to 44 mm Remainig compression set 3 mm = 6.5% 4.2.2 Resistance to dynamic deformation This test simulates the load-bearing situations that occur during use of the cushion in practice. A model of the human posterior (weight: 90 kg) is placed on the cushion (thickness of the gel layer: 7cm). It is moved 7 cm back and forth with a frequency of 50 cycles/minute. The principle of this test is shown in figure 5. After 324000 cycles a cushion from ROYAL MEDICA did not show any serious damage. For an acceptable performance in practice, a cushion pass at laest 100000 cycles in this test correspon- ding a service life of approx. 2-3 years. 4.2.3 “Hydrodynamic” pressure distibution capability The pressure distribution capability of a Levagel cushion was determined at the “Institut für Arbeitsphysologie” at Munich University. The method is published in Biomed. Technik, 25 (1980), pages 223-227. Figure 6 shows an example of such a pressure distribution measurement at a Levagel cushion. The colour distribution is a measure for the contact area and the local pressure of the human body parts on the seat. 5. References 5.1 Selle Royal in Pozzoleone (Italy) is the exclusive producer of bicycle saddles, pads and medical cushions using Levagel under the name “Royal Gel”, offering the comfort as well as the excellent padding properties of Levagel.