Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2 Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2 Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2 Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2 Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2 Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2 Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2 Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2 Medical double-sided needle (kind4) with visualisation chamber for venous blood sampling according to TU 32.50.13-002-34102723-2