A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/65
A61M 37/00 (2006.01) A61M 5/30 (2006.01) A61M 5/20 (2006.01) A61M 5/46 (2006.01) A61M 5/48 (2006.01)
Patent
CA 1325149
TITLE VARIABLE INTENSITY REMOTE CONTROLLED NEEDLELESS INJECTORS INVENTORS GAVIN McGREGOR ABSTRACT An apparatus for injecting liquids into a body without using hypodermic needles, the liquid being eject- ed from a small orifice in a probe at a velocity which will penetrate the surface of a body against which the probe is placed. The apparatus ejects a specific small volume of the liquid under a very high initial velocity and pressure followed by the ejection of the main charge of liquid at a lower velocity so that the liquid flows into the channel caused by the initial penetration with- out penetrating to a greater depth. The probe is connected to a hand-held portion whose other end is attached via a flexible tube containing a suitable hydralic fluid to two remote pressure intensifiers, one of which creates the required high initial pressure for a short period of time and the second pressure intensifier provides the pressure necessary to eject the main charge of liquid at a lower velocity. The second intensifier is synchronized electronically or mechanically to follow the initial pulse when its pressure decays to the main charge injection pressure. The pressures created by the high pressure intensifier and second pressure intensifier are individually adjust- able for various type of situations, such as depth of penetration or skin conditions.
609988
Mcgregor Gavin
National Research Council Of Canada
Szereszewski Juliusz M.sc.
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