Alternative Intra Osseous Devices: randomised controlled trial comparing three intraosseous methods

INTERVENTION: The intervention consists of the application of a randomised instraosseous needle: 1. In people over 14 years: BIG versus FAST versus conventional bone needle 2. In children more than one and less than 14 years: BIG versus conventional bone needle CONDITION: Severe injury, life threatening ; Injury, Occupational Diseases, Poisoning ; Severe injury PRIMARY OUTCOME: 1. Primary endpoint: aspiration of bone marrow upon successful placement of a bone needle.; 2. Primary parameter is time required for successful placement. SECONDARY OUTCOME: Secondary endpoint: Complications encoured using an intraosseous device; Secondary parameters:; 1. Adverse events; 2. Success rate (%); 3. User friendliness (Visual Analogue Scale [VAS]); 4. Pain scored by the patient (VAS) INCLUSION CRITERIA: 1. Patients in acute life threatening situations, requiring assistance of a mobile medical team 2. Intravascular medical or fluid resuscitation is necessary and intravascular access cannot be obtained after two attempts