DE3119581A1 - Infusion device for gaseous media - Google Patents

Abstract

The invention relates to an infusion device for gaseous media which employs a conventional syringe (1) which has a barrel (13) in which a piston (2) can be displaced with a piston rod (3). The infusion line (5) is connected to the outlet (17) of the syringe. The piston (2) and the piston rod (3) are provided with a continuous passage opening (15) which can be connected to the gaseous medium, an O2/O3 mixture. For a particularly reliable design of the device a magnetic valve (9) is located at the inlet to the passage opening (15), the gas stream arriving from an ozone generator being controlled by a primary detector signal emitter (11) acting as a function of the pressure. The advance of the piston (2) takes place via a stepping motor (4). Thus, it is guaranteed that the volume of the syringe lumen is rinsed with absolutely no dead space. <IMAGE>

Description

Infusion device for gas-shaped media

The invention relates to an infusion device for gaseous media under Use of a syringe with cylinder and plunger, with a Infusion line is connected.

Ozone wins as a medicine because of its special oxidative properties Force is becoming increasingly important in medicine. As a gaseous element, it offers application possibilities, which resemble those of a liquid medicine. For example, you can do it intravenously, Inject intraarterially and intramuscularly as well as subcutaneously. You can do it with blood mix and so incorporate it back into the body in the form of its peroxide derivatives.

A single form of application has not yet been used, or only sporadically used, which is otherwise of primary importance for liquid drugs, namely infusion therapy. There is such a similar therapy, one intravascular oxygen insufflation, which, however, does not yet have a further entrance into the has found general medical therapy. This oxygen insufflation therapy is based on the principle of an automatic advance, which slowly and steadily conventional injection syringe and thus the oxygen through a hose system leads into the vascular system. In principle, such a mechanism could also be used operate with an O2O3-Gömisch. There are then special demands on the system but indispensable in terms of tightness and any flushing processes that may be required.

Not only that air in adequate quantities is a deadly medium for represents the human vascular system, but rather also ozone-air mixtures have been found to be extremely toxic. The security requirements for such a Devices for ozone insufflation must therefore have the highest priority. the Easiest way imaginable to get ozone into the human. To insufflate the vascular system, is the filling of a normal plastic syringe with an attached infusion tube, which is then inserted into a normal automatic advance, such as for arterial pressure infusions are needed.

On the one hand, this method has the disadvantage that a Plastic syringes generally do not have the necessary ozone resistance to produce a to ensure proper functioning and, on the other hand, the filling of this syringe is loaded via the infusion tube with the dead space of the infusion tube, which, depending on the lumen and length, can be between 3 and 7.5 cm3, i.e. such a a filled syringe of 50 ml contains between 6% and 15% air. This simple procedures could be improved by having the syringe for yourself fills and then blows ozone through the infusion tube to get it. afterward on the syringe again, which, however, requires a considerable amount of manual labor Requires effort, and beyond that also due to the inertia of the gas cannot be handled with the necessary safety in the ozone hose when flushing, not to mention the odor pollution during this manipulation. That is fundamental this can be remedied by a syringe with its own built into a controllable propulsion system Rinsing access, whereby the previously known systems work in such a way during rinsing, that the syringe plunger several times back and forth under a constant flow of oxygen is moved until finally a pure oxygen atmosphere inside the syringe is available. This process is cumbersome and time consuming.

The invention is based on the object of such an infusion device propose a complete flushing of the syringe including the infusion lines is possible without special manual activities.

This object is achieved according to the invention in that the syringe plunger has a passage opening which can be connected to the gaseous medium.

An advantageous embodiment consists in that the syringe plunger is provided with a propulsion motor that can be switched on when the feed line is shut off for the gaseous medium.

It is also advantageous that to initiate the flushing process A pressure-dependent measurement signal transmitter is built into the line coming from the generator that switches a solenoid valve in the supply line.

It is also proposed that a three-way cock be installed at the syringe outlet is attached, to which a further syringe can be connected.

Finally, it is advantageous that the syringe is a multiple syringe unit is formed and each piston is provided with a passage opening.

The invention has the essential advantage that the infusion device can be completely flushed with the gaseous medium without manual handling can, whereby the device can also be operated with the necessary security, so that the existing human vascular system when gaseous media are supplied Risks are excluded. The rinsing process can be carried out in a single Operation can be done faster, easier and safer.

The invention is in the following description based on a The embodiment illustrated in the drawing is explained in more detail.

In the drawing is an embodiment of such an infusion device shown schematically and consists essentially of three combined Syringes 1, 1 ', 1 ", these individual syringes 1, 1', 1" having a cylinder 13, in each of which a piston 2 with piston rod 3 is displaceably arranged. the individual piston rods 3 are mechanically connected to one another on a crossbeam 8, wherein the propulsion can be accomplished via a stepping motor 14.

The individual pistons 2 or piston rods 3 have through openings 15 provided, with the interposition of solenoid valves 9 on supply lines 16 are connected.

These supply lines 16 are connected to an edge valve 10, the Via a further line 12 and a measured value signal generator 11 to an ozone generator connected.

At the syringe outlet 17 there are three-way stopcocks 4 to which the infusion lines 5,5 ', 5 "are connected for the actual rinsing process are provided with an ozone destructor 7, after the complete flushing the infusion lines 5, 5 ', 5 "are removed from the device 7 and attached to an infusion needle be attached. One valve 4 ~ with the infusion line 511 is an additional one Syringe 18 connected via a line 19.

For safety reasons, the system is powered by a stepper motor driven. The syringe is rinsed through the syringe plunger 2,3 so that the gas flow flows through the entire syringe cavity and thus an absolutely dead space-free flushing of the spray space 13 is guaranteed. The gas flow passes after the syringe cavity the infusion line 5, 5 ', 5 "to then via a device's own connection in the Ozone inactivation filter 7 to be directed. To be as therapeutic as possible To provide security, it seems advantageous in the incoming from the ozone generator Gas flow to build the pressure-dependent measured value signal transmitter 11, which is only from a certain pressure value under acoustic and optical display the electrical circuit activated for the flushing process, which avoids an alleged flushing process will. It is also advantageous to interrupt the ozone gas line using the manual valve 10, which is coupled to an electrical switch 20, which in turn only after switching off of the gas flow from the ozone generator the electrical circuit for the automatic propulsion 14 closes so that this can only be switched on when the ozone supply from Generator is blocked, which means an unintentional, possibly due to handling errors caused too much gas does not flow into the vascular system. This ensures In addition, a downstream solenoid valve 9, which is only used during the flushing process actively opens, but otherwise remains passively closed.

The ozone gas can be incorporated into the body in several forms be: subcutaneous, intramuscular, intravenous and intraarterial. Especially with regard to it appears extremely useful to apply such applications to this medical medium to combine shapes with each other. This is made possible by a combination of several Syringe systems l, l ', l' 'on a propulsion unit 8. Used for multiple applications of ozone about an intra-arterial infusion combined with a subcutaneous one, then there is a significant pressure difference in the respective feeds 5,5 ', 5 "to the Patient. Around hence an unintended pressure equalization between both syringes and thus the penetration of blood into the respective low-pressure system To prevent the gas supply from the manual valve 10 to the syringe battery l, l ', l' ' so that each syringe is preceded by a solenoid valve 9 to control the respective Hermetically seal the printing system for itself. It is also advantageous at the device outlet 17 to insert a three-way stopcock 4 between the syringe outlet and the infusion line, because not only with arterial, but also with intravenous infusion There may be increased intravascular pressure so that the infusion line is full of blood runs. This can be done through an ozone-filled syringe 18 at the third outlet of the three-way valve 4, which is then simply turned over and that into the infusion line 5 'penetrated blood immediately before the onset of the coagulation process with the help of the Pressure medium 020 3 which is pushed back in the syringe 18 into the vascular system.

The three-way valve 4 has two other major advantages: ozone provides a relatively unstable gas, which due to its molecular configuration is temperature-dependent disintegrates.

As a result, it may well become necessary during a longer period continuous infusion to rinse the syringe chamber again and the once set Maintain concentration, i.e. the ratio of O to O3. This can then be done easily done by a renewed flushing process, whereby the three-way valve 4 is turned over, so that the access to the patient remains closed, the exit to the ozone destructor but is opened.

As a further advantage, such a three-way valve 4 offers the possibility of to interrupt the ozone insufflation by an intermediate injection of liquid medication, for example ascorbic acid as protection against oxidation for certain therapeutic indications.

L e r s e i t e

Claims (5)

Patent claim infusion device for gaseous media using a syringe with cylinder and plunger, with an infusion line at the syringe outlet is connected, characterized in that the syringe piston (2,3) has a passage opening (15) which can be connected to the gaseous medium. 2) Infusion device according to claim 1, characterized in that the Syringe plunger (2,3) is provided with a propulsion motor (14) which can be switched on is when the supply line (16) for the gaseous medium is shut off. 3) Infusion device according to claim 1 and 2, characterized in that to initiate the flushing process in the line coming from the generator, a pressure-dependent one Measurement signal transmitter (11) is installed, which has a solenoid valve (9) in the supply line (16) switches. 4) infusion device according to claim 1 to 3, characterized in that a three-way cock (4) is attached to the syringe outlet (17), to which another Syringe (18) can be connected. 5) Infusion device according to claim 1 to 4, characterized in that the syringe (1,1 ', 1 ") is designed as a multiple syringe unit and each Piston (2,3) is provided with a passage opening (15).