Violence: Recognition, management and preventionInjury pattern of the Flash-Ball®, a less-lethal weapon used for law enforcement: Report of two cases and review of the literature
Introduction
Less-lethal weapons are designed to incapacitate individuals rather than to induce fatal injuries. This property makes them interesting in law enforcement, where the use of force is often mandatory to neutralize combative individuals or to disperse riot crowds, but the risk of injury to the target, the officers and bystanders has to be kept to a minimum (1, 2). In many countries, less-lethal weapons are not subject to ownership restrictions as severe as for other weapons, thus also making them attractive for self-defense (3, 4).
Some years ago, police forces of the city of Lausanne, Switzerland, were equipped with the Flash-Ball®, a firearm designed to fire various types of ammunition at muzzle kinetic energies close to 200 J. One of the possible types is a rubber ball designed to deliver a blunt impact. The manufacturer describes this gun as a “revolutionary defence weapon,” with a “dissuasive look and detonation” that “provokes on impact the equivalent of a technical K.O.,” thus making it “an impressive and effective intelligent weapon.” This weapon was recently used by the local police force’s special operations team to neutralize threatening individuals.
We report 2 patients who required medical attention after being shot with this weapon. Medical data on injuries inflicted by similar less-lethal impact weapons available in the literature is reviewed and basic ballistics are discussed.
Section snippets
Case 1
A 22-year-old man was brought to the Emergency Department (ED) after a loss of consciousness during political demonstrations that took place on a hot and sunny day. He had no complaints upon arrival. As the clinical examination revealed several small round contusion marks on the abdomen and the thighs (Figure 1), he admitted having been hit some hours before by rubber bullets fired by anti-riot police forces. No detailed information regarding this event could be obtained from the patient. The
Case 2
A case of domestic violence was investigated by a night patrol of the police. The officers encountered a threatening young man armed with a 30-cm long knife, who showed evident signs of psychological disturbance. He barricaded himself in his apartment. This prompted the officers to call in the Special Operations team. Negotiations were fruitless and the man started to mutilate himself. He was finally neutralized with the Flash-Ball® gun and immediately transported to the ED for medical
Discussion
Less-lethal technology encompasses a wide array of weapons based on delivery of kinetic energy, chemicals or electromagnetic energy, designed to incapacitate individuals without inducing lethal injury (2, 5, 6). Although suppliers often underscore the non-lethal character of these weapons, the term less-lethal reflects more accurately the recognized potential of serious injury, even when these weapons are used in optimal conditions. The terminology “less-lethal” furthermore carries potential
Conclusion
The energy delivered by less-lethal impact weapons is high enough to cause relevant injuries in a significant number of cases. The absence of skin penetration must not mislead the emergency physician into minimizing the potential damage from this kind of weapon. The impact from such a weapon must be considered as a high-energy blunt trauma and be evaluated accordingly. Although less-lethal weapons offer interesting alternatives to law enforcement agencies to subdue combative individuals or to
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