Syringe like apparatus with removable capillary cartridge

A - Human Necessities – 61 – M

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128/83

A61M 5/00 (2006.01) A61B 5/15 (2006.01)

Patent

CA 1121681

SYRINGE LIKE APPARATUS WITH REMOVABLE CAPILLARY CARTRIDGE Abstract of the Disclosure A hollow capillary tube or cartridge is received within the interior of a hollow tubular syringe-like device to collect a blood sample. A fluid inlet means of the capillary cartridge connects in a fluid conductive rela- tionship with a hypodermic needle attached to the syringe- like device to conduct a blood sample to the interior of the capillary cartridge. A fluid outlet means of the capillary cartridge allows the blood sample to fill the capillary cartridge by expelling air from the interior of capillary cartridge. The fluid outlet means includes a removable piece of fluid conductive fibrous material which allows the air to escape as the blood sample is received and which conducts a small amount of blood sample when the capillary cartridge is completely filled. Means for creating a pressure less than ambient pressure at the fluid outlet means of the capillary cartridge may be employed when the arterial blood pressure of the individual from whom the blood sample is collected is less than sufficient to naturally fill the interior of the capillary cartridge. Crystalline heparin deposited on the interior of the capillary tube prevents clotting of the collected blood sample.

302222

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