Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
1999-01-11
2001-03-13
Seidel, Richard K. (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S171000, C604S535000
Reexamination Certificate
active
06200294
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a multifunctional syringe with safety slide sleeve, and more particularly to a syringe in which after injection, the injection needle is retracted and hidden in a safety slide sleeve so as to avoid impalement and infection of medical personnel or other people.
2. Description of the Prior Art
All the existing medically used I.V. fustula set, scalp vein set and general infusion injection needle include a single injection needle serially connected with an infusion tube for intravenous injection. A needle sheath is fitted around the injection needle. In injection, the needle sheath is removed from the injection needle. After the injection is completed, the needle sheath is again fitted around the injection needle for avoiding impalement. However, the needle sheath has a very small fitting hole. Therefore, it often takes place that when inserting the injection needle back into the needle sheath, medical personnel are incautiously impaled by the used injection needle. This may lead to infection of the medical personnel with AIDS virus, hepatitis, etc.
In addition, in the medical dropper equipments such as I.V. fustula set, scalp vein set, general infusion injection needle and intravenous infusion needle, a wing-type fixing plate structure is provided. However, such wing-type fixing plate cannot be replaceably applied to different kinds and sizes of needles so that the medical institute must prepare all the above needles for multiple uses. This leads to inconvenience in use.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a multifunctional syringe with safety slide sleeve which slidably firmly engages with an upper end of a connecting tube so as to retract and hide the injection needle connected with the top of the connecting tube in the safety slide sleeve. Accordingly, after injection, the injection needle is totally hidden in the slide sleeve and then discarded. Therefore, the injection needle is prevented from being exposed outside so as to avoid impalement or infection of other people. Moreover, the present invention has simple structure and is applicable to scalp vein set, intravenous infusion needle and general dropper infusion set so as to avoid waste of medical resource.
The present invention can be best understood through the following description and accompanying drawings, wherein:
REFERENCES:
patent: 4676783 (1987-06-01), Jagger et al.
patent: 5259843 (1993-11-01), Watnabe et al.
patent: 5382240 (1995-01-01), Lam
patent: 5800400 (1998-09-01), Hogan
patent: 5928199 (1999-07-01), Makadami
Rosenberg , Klein & Lee
Seidel Richard K.
Thanh Loan H.
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