WO1979000743A1

WO1979000743A1 - Radiopaque contrast injector

Info

Publication number: WO1979000743A1
Application number: PCT/BR1979/000002
Authority: WO
Inventors: F Cozzupoli
Original assignee: F Cozzupoli
Priority date: 1978-03-13
Filing date: 1979-03-05
Publication date: 1979-10-04
Also published as: EP0015263A1; BR7801543A

Abstract

A radiopaque contrast injector for use in angiography including a tubular case (1) connected to an arm (2) fixed to or proped against a support (3). The case (1) includes a longitudinal opening (5) in the side wall (6), and extending from outlet end of case is a small tap valve (7) having at least a pair of branches (8, 9) respectively connected to a gauge (11) and to a needle (13). Also, in communication with the valve (7) is a nozzle (14) which is connected to a hose (15) which is used to conduct heparinized serum. This structure overcomes the problem of injecting contrast medium under contrast pressure making use of a common syringe.

Description

TITLE OF INVENTION. Specification on Patent of Invention concerning "RADIOPAQUE CONTRAST INJECTOR'' .

This invention relates to a radiopaque contrast injector whose aim is to offer a contribution to the study of angiography.

Angiography is a radiographic search in which the blood vessels are made evident by the injection in the bed thereof of an opaque substance to X-Rays, such vessels being thus exposed to radiation for a short time, for purposes of recording a photographic film.

The instrumental injector can be from a simple plastic or glass syringe to an automatic electrical or aircompressed device. A good arterial angiography demands the injection of an uniform contrast stream that can only be achieved if the pressure exerted over the contrast inside the injec- tor be a constant one.

The system of contrast injecting by means of a simple syringe shows no accuracy. The operator has to firm the syringe with his own hands, besides having no means of how to guide himself in order to maintain an uniform pressure thereon, resulting from this the inaccuracy of angiog-raphies, mainly arterial ones. The automatic system is far more exact, based on the principle of contrast injecting under constant pressure. This method has , however, the inconvenience of demanding an extremely complicated equipment, more sophisticated in handling and very expensive for being, in their majority, imported, what circunscribes its use.

An object of this invention is to fulfill such a lack. It relates to an equipment that although being manu al and making use of a common syringe, enables the operator to maintain, on the embolus, a constant pressure , keeping thus during the injection an uniform contrast stream at the syringe spout.

The aim of the invention is mainly to permit the maintainance of the syringe in a fixed position when in use, allowing the concentration of the operator exclusively on the embolus. For this purpose the equipment is provided with a tubular case 1 duly connected to a supporting arm 2 which, by its turn, is fixed to a support 3, being said case destined to lodge the syringe 4.

Such case 1 is provided with a longitudinal open ing 5 in the side wall 6 in order to allow the visualizing of the syringe scale.

The accompanying drawings (sheets 1 and 2), illustrate a constructive example of the invention, character ized furthermore, by the fact that the tubular case 1 is pro vided, in the outlet end thereof, with a small tap valve 7, having at least a pair of branches 8, 9, being the first one connected by means of a hose 10 to a gauge 11 , mounted at the reach of the operator's eyes, preferably at the side wall 6 of the case itself, and the other one 9 , connected by means of another hose 12, to the punching needle 13. A noz- zle 14, destined to couple a third hose 15 , that conducts heparinized serum, can be optionally associated to said tap valve 7, that will permit the passage of the serum towards hose 12, when the syringe outlet spout 16 is shut by tap 17. In the drawings, figures 1 and 2 are non-limita tive constructive examples of the equipment, whose arm 2 can be rigidly firmed to the fixed support 3 (figure 1) or sim ply juxtaposed to it by means of a prop 18 as illustrated infigure 2. In this example, as shown in the drawing, the assembly formed by the lodging syringe case 1 and by the supporting arm 2 is duly fixed at a upright rod 19 of adjustable height.

As above mentioned, the invention frees the operator from the additional effort of keeping the syringe in a fixed position with his own hands, and he can thus concen trate all his attention exclusively on the embolus 20, being thus in a better condition to inject, far more accurately, the radiopaque contrast. The proceeding is aided by a gauge 11 mounted preferably in the very case body, next to opening 5 , destined to permit the visualizing of the syringe scale, in such manner as to allow the operator; without moving the head, to follow with the eyes the movement of the gauge nee dle and the embolus progression inside the syringe.

As already said, the invention in which concerns case 1 or sustaining arm 2, is. not limited to a given con structive structure, for these elements can be directly fixed to support 3 or just propped against the same as seen in fig ure 2, in which the referred supporting upright rod 19 is foreseen. Having thus described the invention, the main characteristics thereof are those set forth in the annexedclaims.

Claims

CLAIMS 1. Radiopaque contrast injector provided with a tubular case (l) duly connected to a supporting arm (2) which by its turn, is fixed to a support (3), being said case destined to lodge the syringe (4).

2. Radiopaque contrast injector , as claimed in claim 1 in which case (1) is provided with a longitudinal o pening (5) in the side wall (6), in order to allow the visu alizing of the syringe scale.

3. Radiopaque contrast injector, as claimed in claims 1 and 2, in which case (1) is provided, in the outlet end thereof, with a small tap valve (7), having at least a pair of branches (8,9), being the first one connected by means of a hose (10) to a gauge (11) mounted at the reach of the operator's eyes, preferably at the side wall (6) of the case itself, and the other one (9) connected, by means of another hose (12), to the punching needle (13).

4. Radiopaque contrast injector, as claimed from claims 1 to 3, in which tap valve (7) is optionally provided with a nozzle (14) destined to couple a third hose (15) that conducts heparinized serum to hose (12), when the syringe outlet spout (16) is shut by tap (17).