A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 39/04 (2006.01) A61M 39/10 (2006.01)
Patent
CA 2458767
The introduction of indwelling cannulas into blood vessels (of humans or animals) (typically the veins) is one of the most common everyday actions of physician and nurses. Cannulas typically consist of a bending elastic thin plastic tunnel (typically with an inner diameter of about 1 mm) which can remain in the blood vessel for example up to 48 hours (after which it is typically replaced to avoid infections), and a rigid inner needle for puncturing the blood vessel, which is removed immediately after inserting the cannula into the blood vessel. However, one of the biggest problems of this technology is the problem of blood spillage when removing the needle and/or when switching devices that connect to the cannula (such as for example IV sets for infusion), which makes it almost impossible for the nurse or physician to avoid coming it contact with the patient's blood when removing the needle or when switching the connections. This entails for example the danger of catching various infections, for example if the physician's or nurse's skin is slightly broken or if he/she has wounds on the hands. Of course the nurse or physician can always use gloves for this but this is inconvenient many times, especially for example when there is a problem to find the veins and the physician has better control without the gloves. The present invention solves this problem by providing an improved device which automatically seals the cannula when removing the needle and when switching connections, preferably based on inserting the needle and any other connections thorough a preferably built-in self-sealing rubber.
Gadassi Haim
Mayer Yaron
Gadassi Haim
Mayer Yaron
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