Needle for subcutaneous delivery of fluids
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Aug 9, 2001
app pub date -
Feb 6, 2001
filing date -
Jun 10, 1996
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A needle (10) for delivering a liquid to a subject comprises a shaft (11) having an internal surface defining a longitudinally extending internal bore having an open end (15) to receive a liquid supply, the other end (16) being sharpened for penetration of the subject's skin. A plurality of apertures (18) are provided, each being a cut extending across the external surface of the shaft side (11) at a sufficient depth to establish communication with the bore. The external aperture area is approximately three times greater than the internal aperture area, thereby ensuring that the liquid is delivered to a large surface area of tissue to improve absorption and eliminate fluctuations in delivery rate. The needle (10) can be mass-produced by aligning a batch of shafts alongside one another and running a grinder across the shafts' surfaces to create apertures (18) in the entire batch of needles simultaneously.
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