Safety needle
First Claim
1. In combination with a syringecontaining a fluid for injection into a patient, a safety needle which comprises:
- a hollow generally cylindrical needle allowing passage of said fluid, attached at one end to said syringe, having the other end shaped to penetrate the patient'"'"'s skin;
a safety needle cover comprising;
a tubular chamber coaxial with, and surrounding but spaced apart from a portion of said needle, said chamber having a closed proximate end attached to said needle proximate, but spaced from the one end of said needle and a distal end spaced from the other end of the needle and forming a concentric opening therearound to the interior of said chamber;
a tubular translating sheath, one end proximate said chamber, and the other end extending beyond the other end of said needle in a first position;
means for slidably engaging said one end of said sheath to said chamber, said engaging means slidably engaging said one end of said sheath such that said sheath is capable of translating upon contact with the patient from the first position to a second position wherein a portion of said sheath moves with respect to said chamber to expose the other end of said needle;
means for biasing said sheath toward said first position; and
wherein said safety needle cover is only directly attached to said needle and thereby, separate from said syringe.
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Accused Products
Abstract
A sheath is provided as a cover over a hollow needle for use by medical personnel in combination with a syringe. When needle is not in use, the sheath protects medical personnel from accidental scraping or injections. During use in injections, the sheath is retracted by skin contact into a chamber attached to the proximal end of the needle. The sheath can also be capped or sealed when not in use to maintain safe conditions until actual injection use on a patient. The sheath may also be restrained from retraction during shipping or rough handling. The sheath is made from transparent material to not impede accurate injection of the needle into the patient. In use, the sheath further maintains sterile conditions at the point of injection by precluding airborne contamination.
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Citations
8 Claims
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1. In combination with a syringe
containing a fluid for injection into a patient, a safety needle which comprises: -
a hollow generally cylindrical needle allowing passage of said fluid, attached at one end to said syringe, having the other end shaped to penetrate the patient'"'"'s skin; a safety needle cover comprising; a tubular chamber coaxial with, and surrounding but spaced apart from a portion of said needle, said chamber having a closed proximate end attached to said needle proximate, but spaced from the one end of said needle and a distal end spaced from the other end of the needle and forming a concentric opening therearound to the interior of said chamber; a tubular translating sheath, one end proximate said chamber, and the other end extending beyond the other end of said needle in a first position; means for slidably engaging said one end of said sheath to said chamber, said engaging means slidably engaging said one end of said sheath such that said sheath is capable of translating upon contact with the patient from the first position to a second position wherein a portion of said sheath moves with respect to said chamber to expose the other end of said needle; means for biasing said sheath toward said first position; and wherein said safety needle cover is only directly attached to said needle and thereby, separate from said syringe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification