Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1997-02-20
1998-10-20
Hindenburg, Max
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604181, A61M 520
Patent
active
058239987
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an injection apparatus, particularly to the injection apparatus, having an ampule mounted thereon, for manually giving an injection of a medicine in the ampule to a patient, and more particularly to the injection apparatus which is suitable for an ampule containing two-component medicine.
BACKGROUND ART
As an injection apparatus, for giving an injection of a medicine (agent) in an ampule, which is prepared by installing the ampule thereon and mounting a needle on the ampule, and which is operated to inject the medicine in the ampule, a pen-type of injection apparatus as shown in FIG. 1 generally, is mainly used. The injection apparatus 90 of this type comprises a cylindrical body 92 and a cap 94, and an ampule 95 is inserted into the body 92. A needle 91 is mounted on a front end of the ampule 95 projecting from an end of the body 92. Then, a knob 96 positioned at a rear end of the cap 94 is operated to set an injection amount. Then, the knob 96 is pushed toward the needle 91 to move a piston 99 of the ampule 95 through a rod 97. In this manner, a medicine 98 is injected to a patient.
In this type of injection apparatus, however, for the installation and removal of the ampule 95, it is necessary to remove the cap 94 from the body 92, to insert the ampule 95 into the body 92 or to remove it therefrom, and, then, to install the cap 94 on the body 92 again. It takes time and labor to carry out such an operation, because the engagement between the body 92 and the cap 94 cannot be made favorably or the cap 94 is separated from the body 92. Thus, the injection apparatus has a problem in that an operator is inconvenienced when handling it.
Further, because the entire ampule 95 is hidden in the injection apparatus 90, the ampule 95 is not seen from outside or is hard to see even though the body 92 has a peep window. Thus, there is a problem in that the amount of the medicine 98 is hard to see.
DISCLOSURE OF THE INVENTION
The present invention has been developed in view of the above-described problems. That is, as a first technical problem to be solved by the present invention, the present invention is intended to provide an injection apparatus on which an ampule can be easily mounted. As a second technical problem to be solved by the present invention, the present invention is intended to allow an ampule installed in the injection apparatus to be seen easily from outside. In order to solve the above-described technical problems, the injection apparatus of the present invention is constructed as follows.
That is, the injection apparatus, on which an ample having a piston for sealing an agent in a syringe is installed, has piston rod means for pressing the piston of the ampule in an axial direction. The injection apparatus comprises an ampule holding part and an ampule gripping means. The ampule holding part defines an ampule insertion outer opening which is expanded in a circumferential direction when the ampule is inserted into the opening, and defines an ampule insertion space for inserting the ampule thereinto. In this construction, the outer opening is restored to its original configuration after the ampule is inserted into the ampule insertion space, so that the ampule is held by the ampule holding part temporarily. The ampule gripping means grips the ampule and blocks the movement thereof in both the axial direction and the direction perpendicular to the axis of the ampule.
In the above construction, in order to mount the ampule on the injection apparatus, the ampule is inserted into the ampule insertion space through the opening of the injection apparatus in the axial direction (hereinafter, referred to as an "axis") of the ampule or a direction perpendicular thereto. At this time, the opening is expanded by the ampule. Because the expanded opening is returned to its original configuration after the ampule is inserted into the ampule insertion space, the ampule is prevented from falling out of the ampule insertion space. In other words, the ampule is te
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Boone David E.
Eli Lilly Japan Kabushiki Kaisha
Hindenburg Max
Taylor Douglas J.
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