Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1986-12-19
1989-06-13
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604264, A61M 532
Patent
active
048388777
ABSTRACT:
There is disclosed a polymeric hypodermic device that comprises a hollow polymeric needle for injection of substances beneath the skin. The polymeric hypodermic device is constructed of a polymeric material such as polyetheretherketones, polycarbonates, polyetherimides, polymethylpentenes, and other synthetic material having bio-compatibility and possessing sufficient structural strength in such fine structures so as to result in penetration of the skin and adjacent body tissues. The invention provides a novel injection end through which the medication is injected in a direction other than parallel to the axis of the needle, which has had a swirling motion imparted to it, thus lessening trauma to tissue and veins. In addition, said injection end is conical in shape with portals above a solid conical penetrating point, the outer surfaces of the device converge uninterruptedly forward from opposite sides of a tube to a needle sharp point, above said conical penetrating point two or more portals equally spaced along the outside diameter of the device are flush with the exterior of the outer surface of the device and wherein the side walls of the portal are configured so as to impart an angular momentum to the fluid to be injected. Another aspect of this invention is concerned with the use of such a unique polymeric needle for body fluid gathering that lessens the chances of arterial trauma and hemolysis.
REFERENCES:
patent: 2097039 (1937-10-01), Peterson
patent: 2954768 (1960-10-01), Hamilton
patent: 3127894 (1964-04-01), Smith
patent: 3831814 (1974-08-01), Butler
patent: 4699612 (1987-10-01), Hamacher
patent: 4710180 (1987-12-01), Johnson
Colosimo Mark F.
Nickey D. O.
Yasko John D.
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