Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1996-11-19
1998-08-11
Buiz, Michael
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604154, A61M 520
Patent
active
057921024
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
The present invention relates to a conversion kit for a machine for intravascular injection of compounds or solutions, such as parenteral solutions, e.g. X-ray contrast medium solutions, from high-pressure syringes. In particular, the present invention relates to a conversion kit which enables the use of an injection machine designed for high-pressure syringes to be use with manual syringes.
In general, injection machines for high-pressure syringes include a vessel for releasably holding a high-pressure syringe and a power-driven retractable and extendable spindle for moving the piston of the high-pressure syringe. The vessel has a receiving head provided with a cylindrical guide for tightly surrounding the distal end region of the high-pressure syringe body and having a radial recess for substantially non-rotary reception of a peripheral edge projecting from the distal end of the high-pressure syringe body. The spindle has a piston-holder releasably secured to its free end, the piston-holder having a coupling head for coupling it to the piston of the high-pressure syringe.
Injection machines are used for intravascular injection of parenteral solutions, more particularly X-ray contrast medium solutions, in phlebography, i.e. X-ray photography of leg veins for diagnosing thrombosis, and in computer tomography, in order to inject relatively large volumes, in the range of about 100 to 200 ml, in accordance with a set controlling program. In this manner, a wide variety of desired injection profiles can be obtained with a high degree of accuracy, and in a simple manner, while meeting the particular medical requirements. The various injection profiles can be stored and are therefore always available for further inspection and for future investigations.
For example, injection machines can deliver parenteral solution at rates from 0.1 to 9.9 ml/s, which can be selected in 0.1 ml/s steps, and total injected volume of about 100 to 200 ml, being injectable in portions which can be selected in 1 ml steps. Injection is carried out at relatively high pressure, in the range of several bars to several tens of bars, the pressure being electronically controlled and limited for safety reasons.
Injection machines use syringes which usually have a relatively large volume of about 100 to 200 ml. These syringes are known in clinical terminology as "high-pressure syringes" because of the relatively high pressure used for injection.
In addition to high-pressure syringes for injection machines, there is a continuing and much more extensive use in medical practice of conventional manual syringes, which usually have a relatively small volume in the range from 1 to 50 ml. In many cases it would be very desirable to use manual injection syringes in automatic injection procedures. However, manual injection syringes are generally constructed in a manner which does not fit in automatic injection machines designed for high-pressure syringes. Therefore a special machine which is designed for manual injection syringes is needed. These special machines are relatively expensive, and thus add to the overall cost of performing medical procedures.
Therefore, there remains a need in the art to provide a less complex and less expensive means and procedure for performing automatic intravascular injection of parenteral solutions from manual syringes.
OBJECTS OF THE INVENTION
It is one object of the present invention to provide a conversion kit which allows an automatic injection machine for high-pressure syringes to be optionally used for automatic injection using manual syringes.
SUMMARY OF THE INVENTION
The above object and others as will be apparent to one skilled in the art are accomplished according to the present invention by providing a conversion kit for enabling automatic injection machines designed for high-pressure syringes to be used for intravascular injection from manual syringes. In particular, the conversion kit according to the present invention includes the following elements.
(1) At least one conversion vessel, ha
REFERENCES:
patent: 3858581 (1975-01-01), Kamen
patent: 4596558 (1986-06-01), Smith et al.
patent: 4677980 (1987-07-01), Reilly et al.
patent: 4705509 (1987-11-01), Stade
patent: 5080653 (1992-01-01), Voss et al.
patent: 5140862 (1992-08-01), Pappalardo
patent: 5244461 (1993-09-01), Derlien
patent: 5269762 (1993-12-01), Armbruster
Buiz Michael
Lewis William W.
Limpus Lawrence L.
Mallinckrodt Medical Inc.
LandOfFree
Conversion kit for a machine for automatic intravascular injecti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Conversion kit for a machine for automatic intravascular injecti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversion kit for a machine for automatic intravascular injecti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-384144