device for puncture for the purpose of diagnosis and treatment of physiological and unphysiologischen and other cavities in the fields of human and veterinary medicine

摘要

2.1 The suprapubic percutaneous puncture and drainage of the urinary bladder requires particular dexterity and experience even though it is impossible sufficiently to avoid undesirable application of force, unpleasantness for the patient, the risk of infection and injury or technical faults. 2.2.1 The novel, three-part trocar tip permits force-saving initial puncturing without bruising of tissues as a result of the lancet (1) of particular angular design, an incision restricted to a semi-circle as a result of the groove, sharp knives (2) in order to avoid the infection-promoting punching effect and haemostatic, gentle and therefore conservative expansion of the punctured tissue without the incision wound going beyond a semi-circle as a result of the blunt dilator (3). 2.2.2 The hose (4) which reaches through the trocar shaft into the dilator contributes to the dilation, achieves a tight fit of the tissue even after removal of the trocar and prevents the emergence of blood or liquid beside the hose. A defined slot (5) in the groove-shaped cross-sectionally stable trocar shaft prevents the hose from jumping out due to compressive force without any impairment of the tilting thereof for removal of the trocar after the puncture. 2.3 The device is suitable as a set for single or repeated puncture and drainage and for the introduction of diagnostic, treatment or other equipment into all cavities (including containers for medical liquids) in human and veterinary medicine. IMAGE