To assess safety, pharmacokinetics and the effect of BIBR 1048 MS on coagulation parameters in healthy volunteer subjects.

Inclusion Criteria:

• Healthy male subjects as determined by results of screening
• Signed written informed consent in accordance with GCP and local legislation
• Age ≥ 18 and ≤ 50 years
• Broca ≥ - 20% and ≤ + 20%

Exclusion Criteria:

• Any finding of the medical examination (including blood pressure, pulse rate and electrocardiogram (ECG)) deviating from normal and of clinical relevance
• History or current gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunologic, hormonal disorders
• History of orthostatic hypotension, fainting spells and blackouts
• Diseases of the central nervous system (such as epilepsy) or psychiatric disorders
• Chronic or relevant acute infections
• History of allergy/hypersensitivity (including drug allergy) which is deemed relevant to the trial as judged by the investigator
• History of any bleeding disorder including prolonged or habitual bleeding
• History of other hematologic disease
• History of cerebral bleeding (e.g. after a car accident)
• History of commotio cerebri
• Intake of drugs with a long-life (> 24 hours) within 1 month prior to administration
• Use of any drug which might influence the results of the trial within 10 days prior to administration or during the trial
• Participation in another trial with investigational drug within 2 months prior to administration or during the trial
• Smoker (> 10 cigarettes or 3 cigars or 3 pipes/day) or inability to refrain from smoking on study days
• Alcohol abuse (> 60g/day)
• Drug abuse
• Blood donation within 1 month prior to administration or during the trial
• Excessive physical activities within 5 days prior to administration or during the trial
• Any laboratory value outside the clinically accepted reference range
• History of any familiar bleeding disorder
• Thrombocytes < 150000/µl