Patent Application
20070129677
I. Field of the Invention
The present invention refers to a “double V-shaped groove safety syringe”, particularly to a disposable safety needle structure tied with a commonly used syringe, to prevent others from being infected through means of a second injection from a used needle. The invention is composed of an outer needle barrel and an adapter, wherein the outer needle barrel cases a hollow fluid chamber and moves up or down in addition to disposal of said adapter. Moreover, one end of the adapter receives an exhaust portion of said hollow fluid chamber and the other end thereof receives a needle.
II. Description of the Prior Art
Generally, a syringe needle has to be covered by a good protective mechanism after each use, in order to prevent anyone from being infected by a second injection from a used needle. Moreover, those syringes that have no needle protective devices are no longer sold for use under stipulations and laws in many countries over the world. Therefore, a disposable safety needle structure has become a subject to be improved and solved.
In view of the foregoing drawbacks, a safety syringe structure with a double V-shaped groove of the invention is disclosed herein with more practicability in the field to improve a conventional problem of a disposable safety syringe structure.
The main objective of the present invention is to provide a safety syringe with a double V-shaped groove that has the advantages of a simplified structure and is convenient and safe to use. In addition, the invention is able to match up with a conventionally used syringe, so as to reduce the syringe manufacturing cost and expand the syringe applications at the same time.
Another objective of the invention is to provide a safety syringe with a double V-shaped groove; thereby a used needle is unable to be taken out without external force.
Another objective of the invention is to provide a safety syringe with a double V-shaped groove that enables a ring to be disposed outside a hollow portion on the front end of a conical ring of the adapter. The internal wall of the ring comprises of a double V-shaped groove for screwing a needle therein in the direction of either clockwise or anti-clockwise.
To achieve the foregoing objectives, said “double V-shaped groove safety syringe” of the invention is a needle protective mechanism for receiving a syringe for use and is composed of an outer needle barrel and an adapter. The characteristic of the invention lies in the outer needle barrel acting as a cylinder for casing a hollow fluid chamber and is able to move up or down. The invention enables a set of forward clamps and a set of reverse clamps to be projectively disposed on the internal wall of the needle barrel on the rear end thereof opposed to one another. In addition, it has a set of retaining clamps disposed on the internal wall of the needle barrel on the front end thereof. The adapter is disposed inside of said outer needle barrel, with a conical ring shaping bigger on the front and smaller on the rear end thereof disposed on the middle of the adapter. The adapter has a hole on the rear end receiving an exhaust portion of the hollow fluid chamber and has a hollow portion disposed on the front end receiving a needle portion; the hole and the hollow portion are connected for fluid to put through.
Said syringe structure with a double V-shaped groove enables a ring to be disposed outside the hollow portion on the front end of said conical ring of the adapter and the internal wall of the ring comprises of a double V-shaped groove for screwing a needle portion in the direction of either clockwise or anti-clockwise.
Accordingly, after said syringe structure is used for injection and the hollow fluid chamber is drawn out from the outer needle barrel, the design of said outer needle barrel and the adapter of the invention enables the adapter and the needle portion on the front end of the adapter to be retained inside the outer needle barrel, so as to prevent others from being infected through means of second injection from a used needle.
Further aspects, objects, and desirable features of the invention will be better understood from the detailed description and drawings that follow in which various embodiments of the disclosed invention are illustrated by way of examples.
With reference to
Accordingly, after the syringe 30 is used for injection and the hollow fluid chamber 31 is drawn out from the outer needle barrel 10 (as shown in
With reference to
In summary, the safety syringe with a double V-shaped groove of the invention indeed is able to store a used needle in the needle protective mechanism that is separated from said hollow fluid chamber, to prevent others from being infected through means of a second injection from a used needle.
New characteristics and advantages of the invention covered by this document have been set forth in the foregoing description. It is to be expressly understood, however, that the drawings are for the purpose of illustration only and are not intended as a definition of the limits of the invention. Changes in methods, shapes, structures or devices may be made in details without exceeding the scope of the invention by those who are skilled in the art. The scope of the invention is, of course, defined in the language in which the appended claims are expressed.
