Hollow needle assembly

Details Hollow needle assembly Hollow needle assembly

A - Human Necessities

61

B

A61B 5/15 (2006.01) A61B 5/153 (2006.01) A61M 5/158 (2006.01) A61M 5/32 (2006.01)

Patent

CA 2517299

Some embodiments of the invention provide a needle with a sharp open end and a blunt open end, housed in a barrel with an open anterior end and an open posterior end. The barrel can travel along the hub of the needle, for extending the needle for insertion into a blood vessel, and for retracting the needle into the barrel to avoid injury. The blunt open end can be fluidly connected to the inlet of a measurement apparatus, so that the blood can flow directly into the measurement apparatus, eliminating the traditional step of transferring the blood from a syringe to the measurement apparatus. The hollow needle assembly can remain attached to the measurement apparatus because of its small size, and the engagement of an optional safety cap to the open anterior end of the barrel, minimizes the risk of injury and blood contamination. Because a small blood sample is required, a very small needle shaft can be used, minimizing the discomfort experienced by the patient.

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