The patent's assignee is
News editors obtained the following quote from the background information supplied by the inventors: "Conventional needle assemblies adapted to connect a retainer for a medical ampoule are well known. Typically, the needle assembly comprises a screw thread that engages a corresponding screw thread formed on the retainer. However, patients may over-tighten the needle assembly to the retainer which can lead to removal problems. Similarly, over-tightening (or attempts to replace an over-tightened needle assembly) may lead to displacement of portions of the retainer or mechanisms in the retainer used for administering a dose of medicament or needle-stick injuries.
"Thus, there is a need for a needle assembly which prevents the problems associated with over-tightening the needle assembly to a medical device."
As a supplement to the background information on this patent application, NewsRx correspondents also obtained the inventors' summary information for this patent application: "It is an object of the present invention to provide an improved needle assembly suitable for a retainer (e.g., an injection device) containing a medical ampoule that allows for a quick, easy and safe fastening and unfastening. It is a further object of the invention to provide a method of assembling a medical device that avoids jamming of the assembled parts.
"In an exemplary embodiment, a needle assembly comprises a needle hub having a coupling mechanism adapted to engage corresponding coupling mechanism of a retainer, and a notch formed in a proximal end of the needle hub. The notch is adapted to engage a projection on the retainer. A shape of the projection corresponds to a shape of the notch.
"In an exemplary embodiment, a feedback is provided when the projection engages the notch. The feedback may be at least one of a tactile feedback and an audible feedback.
"In an exemplary embodiment, a plurality of notches may be formed in the proximal end of the needle hub, and a plurality of projections may be formed on the retainer. The plurality of projections may be disposed at regular intervals.
"The notch may be an inverted U-shape or triangular.
"In an exemplary embodiment, the notch includes a surface adapted to prevent movement of the projection in a first direction.
"The exemplary embodiments of the needle assembly according to the present invention are preferably used in combination with retainers that may be used as components of injection devices, including but not limited to, pen-type injection devices, syringes, cartridge syringes, safety syringes, auto-injectors, etc. Further, it is foreseen that the needle assembly according to the present invention may be utilized with catheter and/or infusion assemblies.
"Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
"The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:
"FIG. 1 shows a sectional view of a prior art needle assembly;
"FIG. 2 shows an isometric view of a needle assembly according to an exemplary embodiment of the invention;
"FIG. 3 shows an isometric view of a needle assembly according to an exemplary embodiment of the invention;
"FIGS. 4A and 4B show isometric views of a needle assembly according to an exemplary embodiment of the invention;
"Corresponding parts are marked with the same reference symbols in all figures."
For additional information on this patent application, see: Jugl, Michael; Ergel, Turhan.
Keywords for this news article include: Pharmaceutical Companies,
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