Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-01-13
1995-01-10
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 88, 604203, 604411, A61M 3700, A61M 524, A61M 528, A61B 1900
Patent
active
053802810
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to devices for the administration of drugs.
More particularly, the present invention constitutes an improvement in the solution described in the prior Italian Industrial utility model application 15156-B/89 and the corresponding DE-U-9 003 505.
The application in question relates to a device for the administration of drugs, particularly liquids, comprising a double-walled housing which is open at one end and closed at the other by an end wall, in which a needle is fixed and extends substantially the entire length of the housing. The inner jacket of the housing is threaded at least at its open end so as to receive a threaded spigot of a piston applied in the form of a stopper to the open end of a cylindrical container housing the liquid to be administered. The piston has an axial bore closed by a diaphragm which can be pierced by the needle when the spigot of the piston is screwed into the inner jacket. By forming the cylindrical container axially into the said housing it is possible to supply the said liquid product. The entirety is generally like a syringe; it is also possible to envisage the use of this same structure as a device for supplying infusions.
The present invention attempts principly to improve on this prior solution so as to extend its use to the supply of drugs constituted by a liquid and a powder which must be dissolved in the liquid before use. At present the usual method used with drugs of this type provides for a liquid to be drawn up from a phial into a syringe and then for the liquid to be injected into another phial containing the powdered drug and then--after the drug has dissolved--for the solution to be taken up again in a syringe before the injection proper can be effected: a sequence of operations which is rather complicated and must be carried out with extreme care.
According to the present invention, the object is achieved by means of a device for the administration of drugs having the characteristics claimed specifically in the claims which follow.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described, purely by way of non-limiting example, with reference to the appended drawings; in which:
FIG. 1 is an axial section through a housing of a device according to the invention;
FIG. 2 is an axial section through the container intended to house one of the components, typically the liquid vector of the drug no be supplied,
FIG. 3 shows one of the elements of the container of FIG. 1 in greater clarity, and
FIG. 4 shows the device of the invention in its condition of use.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In its essentials and in its basic characteristics of use, the device of the invention does not differ substantially from the device which is the subject of the prior application 15156-B/89 (and DE-U-9 003 505) to which reference has already been made.
In particular, FIGS. 1 to 4 of the drawings appended hereto correspond to FIGS. 1 to 4 of the prior application and the same reference numerals are used to indicate identical or equivalent parts to those used in the specification of the prior application.
Thus, reference 10 generally indicates a cylindrical housing having an end wall 11 and two concentric jackets 12 and 13 which define An annular chamber 14 and a central hollow body 15.
Similarly a needle fixed within the inner jacket 13 of the body 10 is indicated 20.
However the solution of the present invention differs from that described in application 15156-B/89 (or DE-U-9 003 505) in that the needle 20 does not extend through the entire length of the housing 10, that is, from the end wall 11 up to the opposite, open end of the housing 10, but only through part of the length of the housing 10 itself: more precisely, it extends through that part which is between an intermediate partition 100 within the jacket 13 and the end of the jacket which is towards the open end of the housing 11.
More particularly, one of the ends of the needle 20 passes through the partition 100 and defines an end
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patent: 3405712 (1968-10-01), Pierick
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patent: 3739780 (1973-06-01), Ogle
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patent: 3994296 (1976-11-01), Cloyd
patent: 4180070 (1979-12-01), Genese
patent: 4994029 (1991-02-01), Rohrbough
Rollandi Gian A.
Tomellini Giorgio
BRACCO S.p.A.
Manzo Edward D.
Ringsred Ted K.
Rosenbaum C. Fred
Wilkens III Frank
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