INTRAVENOUS NEEDLE ASSEMBLY
First Claim
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1. An intravenous needle assembly comprising:
- a hollow pointed needle;
a hub secured to the proximal end of said needle, said hub having a transparent blood-detecting chamber; and
a plug removably secured in said chamber, said plug having an axial opening therethrough and a thin diaphragm disposed across said opening, said diaphragm having a slit formed therein for permitting the passage of air from said chamber, the amount of material in said diaphragm being substantially unchanged by the formation of said slit therein.
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Abstract
A plug having a slitted diaphragm for venting air from, but preventing the passage of blood from, a transparent blooddetecting chamber located on the proximal end of the hub of a hollow pointed hypodermic needle during a venipuncture procedure.
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Citations
5 Claims
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1. An intravenous needle assembly comprising:
- a hollow pointed needle;
a hub secured to the proximal end of said needle, said hub having a transparent blood-detecting chamber; and
a plug removably secured in said chamber, said plug having an axial opening therethrough and a thin diaphragm disposed across said opening, said diaphragm having a slit formed therein for permitting the passage of air from said chamber, the amount of material in said diaphragm being substantially unchanged by the formation of said slit therein.
- a hollow pointed needle;
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2. The intravenous needle assembly of claim 1 wherein said diaphragm is located adjacent the distal end of said plug.
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3. The intravenous needle assembly of claim 2 wherein said slit is diametrically oriented.
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4. The intravenous needle assembly of claim 1 further comprising a flexible plastic intravenous catheter disposed over said needle.
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5. The intravenous needle assembly of claim 4 wherein said catheter is secured to a hub which is removably attached to the distal end of said needle hub.
Specification