Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-07-28
1994-11-15
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604198, 604263, A61M 500
Patent
active
053643607
DESCRIPTION:
BRIEF SUMMARY
The present invention refers to a needle for syringes, for drawing samples with a vacuum test-tube for endovasal and similar uses, having a safety protection, suitable for eliminating any danger of wounding after use.
As is already known, the throw-away needles which exist on the market are usually applied to the corresponding syringes and are covered by a protective cap, which is slid oaf at the moment they are used.
The cap, which is substantially cylindrical or slightly conical in shape, with an opening at the wider end, must be replaced in position on the needle after the injection has been made, and this is necessary obviously to avoid leaving the needle uncovered, which could wound, for instance, the refuse collection staff.
Since the opening of the protective cap of the needle is relatively small, there exists a risk of the needle not centring it when it is being reinserted into the cap, and consequently wounding the user. This can happen at any time, simply through carelessness but more probably through the tiredness of the medical or paramedical staff at the end of a hospital duty shift.
The danger of the user being wounded is a major problem today, considering the existence of diseases, some of them fatal, such as the acquired immunity deficiency syndrome (AIDS), which are transmitted through being pricked by infected needles.
In order to eliminate or at least avoid any danger of wounding when covering the needle after the syringe has been used, it has already been suggested to foresee a protective cap of the needle, which can be adjusted from a rest position, in which it completely covers the needle, to a use position, in which it places itself around the syringe, thus exposing the needle. After the injection has been made the cap can be slid onto the needle again.
Such a method is known for example from U.S. Pat. No. A-4,968,304, wherein the needle and the related cap are usually separated by the syringe, the connection of the needle with the syringe taking place by means of a screw mounting. A closing plug is provided on the cap, which must be removed before use and replaced after use. During such operations there always exists the risk of the user to be wounded.
A similar method is disclosed in U.S. Pat. No. A-4,961,730 which foresees elastic means, in correspondence with the base of the needle, co-operating with the inner surface of the cap, suitably shaped, to obtain the locking of the needle inside the cap.
This solution which is quite complicated, expensive and difficultly feasible, does not allow a completely safe locking of the needle due to the presence of said elastic means.
Both methods disclosed in U.S. Pat. No. A-4,968,304 and U.S. Pat. No. A-4,961,730 are specifically conceived for hypodermic syringe needles so that their application to needles for different uses, such as cannula-needles or butterfly needles for endovasal use, is hardly envisageable.
FR-A-2 620 942 describes a syringe for dental use, wherein a protective cap is provided on the needle, which is brought over the syringe body during the use. Also in this case it cannot be envisaged an application of the protective cap For other kinds of needle.
The aim of the invention is to eliminate the drawbacks set forth above and revolutionize the solution proposed in the aforementioned prior arts, providing an extremely simple, cheap and safe method to protect the needle, which applies to whatsoever kind thereof.
The aim is achieved, according to the invention, by means of the features listed in the characterizing portion of the attached claim 1.
Advantageous embodiments of the invention are disclosed in the dependent claims.
In particular, according to a modified embodiment, the needle can be used for drawing samples with vacuum test-tubes in place of syringes.
According to the known art, For this type of application two opposed needles with respective protective caps are foreseen. One of such needles is intended to be inserted into the vein while the other is for inserting into a vacuum test-tube, in which the blood is collec
REFERENCES:
patent: 4826490 (1989-05-01), Byrne et al.
patent: 5011479 (1991-04-01), Le et al.
patent: 5098403 (1992-03-01), Sampson
patent: 5181524 (1993-01-01), Wanderer et al.
Flumene Antonio G.
Pilo Giuseppe
LandOfFree
Needle for medical use with safety protection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Needle for medical use with safety protection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Needle for medical use with safety protection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1093873