DE8019804U1 - CONNECTOR FOR DISCONTINUOUS INJECTIONS INTO A PERFUSION LINE - Google Patents

Description

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description

The invention relates to a connector allowing discontinuous injections into a perfusion line, which is formed by a block, which is formed by a main = perfusion channel is penetrated and comprises a secondary channel which has an injection inlet and an outlet which opens into the main channel and is controlled by a closure part which is elastically deformable under pressure.

In the intensive care of a sick person it is often necessary to put a certain, limited amount in the bloodstream Inject drug dose. In most cases, depending on the type of drug, such an injection must be carried out with one repeated at a certain frequency.

In general, such a patient is already under perfusion or transfusion. The repeated discontinuous injection can therefore be carried out by connecting in parallel to the perfusion line. This connection If it is not needed, it is sealed by means of a tap or stopper provided for this purpose. as well the injection can be carried out with the help of a needle and a syringe, but this is not ideal if this is the case The process has to be repeated frequently.

The object of the invention is therefore to create a connector with which you can get into the main perfusion path without having to do anything other than connecting the syringe are necessary, the seal is achieved by an automatic device such that the pressure in the Side channel causes a connection with the main channel and this passage closes again automatically when this pressure decreases.

This object is achieved according to the invention in that the closure part is a hollow element with an ogival shape on the inside, which is received in the secondary channel

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and on its inner surface with the closure of the exit through its concave part, which is directed towards the exit and is penetrated by a micro-opening.

An embodiment of the invention is described below in connection with the single figure of the accompanying drawing, which shows a connector in section.

The connector is a block 1, which has a straight line Main channel 2 and a rectilinear secondary channel 3, which extend in mutually perpendicular directions extend, the axes 6, 7 of the two channels lying in one plane. The secondary channel flows into the main channel an output 4, which is opposite the input of the secondary channel.

The outlet 4 is closed by a part 5 made of plastic, for example made of rubber elastomer or silicone. The inside of the part 5 is designed in the shape of a dome or an ogival arch, its concave section being directed towards the outlet 4 is. The longitudinal axis of the part coincides with that of the secondary channel.

The part 5 has a shoulder 9 which rests on a corresponding shoulder 10 of the wall of the secondary channel, whereby the position of the part in the channel is defined.

The entrance 14 of the secondary channel is provided with an extension part 19 provided, on the one hand a connector with a Forms internal conicity for receiving the outlet of an injection device and on the other hand as a carrier for one removable closure 11, which is connected to part 19 via a tab 12. Preferably the part 19, the closure 11 and the tab 12 are made as one piece.

The position of the part 19 is, for example, by inserting an end 18 of the part into the secondary channel and defines the stop of a shoulder 13 of the part against the entrance edge of the secondary channel.

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: The part 19 is at the desired location by gluing or by welding.

The part 5 is penetrated by a micro-opening 8, which is sufficient when the pressure in the side channel increases opens that a connection between the two channels is achieved. When the branch channel is at atmospheric pressure is located, creates the ogival shape of the part under the pressure prevailing in the main channel a perfect seal.

The elastomer part must, however, be so stiff that it is completely tight when there is a negative pressure in the main channel is. The closure 11, which can be fitted onto the secondary channel, however, offers every security in such a situation. The connector can be in two forms:

- either as it is, i.e. as a part that can be adapted to a perfusion line, a catheter, a cannula. In In this case, the two ends of the main channel are adapted, for example, as shown;

- Or molded or glued directly to a tube (cannula or catheter).

22nd

Claims (7)

& :, KIUAN PATENT LAWYERS TECHNOLOGICAL SUPPLY S.A. LUXEMBOURG - Grand-Duche DR. ROLF E, WILHELMS DR. HELMUT KILIAN GEiaELSTRASSE B SOOO MUNICH TELEPHONE (0 BB) 47 40 73 TELEX 52 34 07 (wUp-d) TELEGRAMS OF PATRANS MUNICH G 1031 Connector for discontinuous injections into a Perfusion line Priority: July 25, 19 79 - FRANCE - 79 19 162 PROTECTION CLAIMS 1 . Connection piece, formed by a block, which of a The main perfusion channel is penetrated and comprises a secondary channel which has an injection inlet and an outlet, which opens into the main channel and is controlled by a closure part that is elastically deformable under pressure, thereby characterized in that the closure part is a hollow element (5) with an ogival shape on the inside, which is received in the secondary channel (3) and extends through its inner surface with the outlet (4) closed its concave part, which is directed towards the exit and is penetrated by a micro-opening (8). Technological Supply S..Α .. G 1031 2. Connection piece according to claim 1, characterized in that g e k e η η draws that the closure part against a corresponding shoulder (10) of the wall of the secondary channel (3) has adjacent shoulder (9). 3. Connection piece according to claim 1 or 2, characterized in that the entrance of the secondary channel (3) is extended by a part (19) which has a connection for the outlet of an injection device forms and serves as a carrier for a removable cap (11). 4. Connection piece according to claim 3, characterized in that the part (19) and the closure cap (11) are formed integrally with eirer linking tab (12). 5. Connection piece according to claim 3 or 4, characterized in that the part (19) in the entrance of the secondary channel (3) is introduced and rests against the entrance edge of the secondary channel. 6. Connection piece according to one of claims 1 to 5, characterized in that the main channel (2) at both ends is adapted to the insertion of the connector into a conduit. 7. Connection piece according to one of claims 1 to 5, characterized in that the main channel (2) at one end with a fixedly connected to the connector Tube is provided.