DE7933720U1 - CONNECTOR FOR INFUSION PIPES - Google Patents

Description

Rolf Krayer /, PA Schönherr & Serwe K 250

Applicant: Rolf Krayer, Bahnhofstrasse 94, 6601 Hanweiler, Germany Designation: connector for infusion lines.

The innovation relates to a connector for infusion lines with at least two connecting pieces, one Circular frustoconical tapering recess for receiving the circular frustoconical connecting pieces of incoming Have infusion lines, and with an outlet nozzle for connecting to an outgoing infusion line.

Such connectors are required when several infusion solutions are supplied through one infusion needle should. A connector with three connecting pieces for connecting the connecting pieces of three incoming ones is known Infusion lines. This connector has

Rolf Krayer PA Schönherr & Serwe

K 256

• in an outlet nozzle on / to which a short infusion tube connects / which at its end is a circular truncated cone-shaped Connector carries.

If it is necessary to use more than three infusion solutions, two of these connectors are used, whereby the connection piece of the one connection piece, which is seated at the end of the infusion tube, has a connection piece of the other connecting piece is connected. The unused connection pieces are closed by a sealing cap locked.

The use of the known connector is disadvantageous of the infusion tube that connects the outlet nozzle and the outgoing connector. Once the use of the infusion tube leads to high manufacturing costs, since the cutting to length of the infusion tube, the Apply glue to the ends of the infusion line

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Rolf Krayer y PA Schönherr & Serwe Γ K 256

and providing the connection piece and the outlet connection with a lubricant and finally sliding them on the ends of the infusion tube on the outlet nozzle and the connector are very time-consuming and therefore result in high labor costs. Another disadvantage is that the infusion lines are only very large Tolerances can be produced, so that a careful check of the finished connecting pieces for leaks must be done. Finally, the known connector has the disadvantage that when using several Connecting pieces the entire connecting element achieved a very large linear expansion.

Based on this known prior art, the object of the innovation is to provide a connector create that ensures an always tight connection with simple and inexpensive manufacture, with a connector has a short design for numerous incoming infusion lines.

Rolf Krayer,

PA Schönherr & Serwe (J K 256 I.

This object is achieved in that the Abgangsstut en Is designed in the shape of a circular truncated cone and that the large outer diameter of the outlet nozzle is equal to the large one Inner diameter of the recesses of the connecting pieces and

the small outside diameter of the outlet nozzle is equal to the.;

small inner diameter of the recesses of the connection \

is pruning. f.

At least two connecting pieces of this type are advantageous;

connected to each other, that in each case "! he outlet nozzle Connection piece in the recess of a connection piece of another connecting piece sits.

The outlet stub of one connecting piece is advantageous by an adhesive or the like. firmly connected to the connection piece of the other connector.

Rolf Krayer ßs

PA Schönherr & Serwe J K 256

p The connecting pieces preferably point close to their free

'«End on its outer wall and outwardly directed retaining lugs for a bayonet lock, screw lock or the like. on.

{) In a further advantageous embodiment is on

the connection piece near the outlet stub an outlet stub partially overlapping, sleeve-like overlapping

\ nut, Eajonetthhalterung or the like. rotatably arranged.

: Preferably, the connector has a close to the end

j circumferential groove-like groove arranged in the duct,

: in which the edge of one in the face of the union nut,

Bayonet holder or the like. arranged circular shape : is held. The outlet connection preferably has

a frustoconical circular cone reaching up to the groove-like groove formed extension section.

I Il

Rolf Krayer PA Schönherr & Serwe

K 256

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A connection piece is preferably in the same line with its longitudinal axis as the longitudinal axis of the outlet piece arranged and extends the longitudinal axis of the or the other connecting piece at an angle. 30 to the longitudinal axis of the Outlet connection.

The connecting pieces, which are arranged at an angle to the longitudinal axis of the outlet nozzle, are advantageously at a greater distance from Outlet stub than the connection stub lying in the same line.

The connecting piece, the union nut, are preferably made or bayonet mount made of elastic plastic copolymers.

The innovation is shown as an example in the drawings. Show it:

1 shows a connecting piece according to the invention in side view,

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Rolf Krayer PA Schönherr & Serwe <·? 'I.

K 2S6

. 11th

Tig. 2 a connecting piece with a union nut in Side view,

Fig. 3 three connecting pieces connected to one another by an adhesive according to Fig. 1,

4 shows two connected to one another by the union nut Connection pieces according to Fig. 2.

According to Fig. 1 has a connector 1 for infusion lines two connecting pieces 2 and 3 for incoming infusion lines. The connecting pieces 2 and 3 are frustoconical tapering recesses 4 and 5, which are designed to accommodate the corresponding frustoconical connecting pieces the incoming infusion lines are determined. The recesses 4 and 5 are with channels 6 and 7 in connection, the channel 7 opening into the channel 6 at an angle of approximately 30 °.

Rolf Krayef PA Schönherr & Serwe

K 256

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The connecting piece 1 has, as an extension of the channel 6 I, in the same line with the longitudinal axis of the connecting piece 2
a circular frustoconical outlet nozzle 8, the

large outer diameter labeled _{D a} equal to ':

large inner diameter of the connection, denoted by Dj ^!

nozzles 2 and 3 and its smaller one, denoted by d_ )

Outside diameter equal to the small one marked with d ^ The inner diameter of the connecting pieces 2 and 3 is ·; The connecting pieces 2 and 3 have near their free ends:

on their outer wall outwardly directed retaining lines 9 ^:

for a bayonet or screw lock. '■■

This type of tapered fit is described in conjunction with |

i with the retaining lugs 9 in medical technology as a Luer lock \

Connection denotes «Such a connection without use |

connection of retaining lugs and without the use of a bayonet or:

j screw cap is known as a Luer plug connection. _;

Rolf Krayer PA Schönherr & Serwe

K 250

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As shown in Fig. 3 / are used to manufacture a

j connecting element with four connections three connecting

I pieces 21 in the manner of a Luer plug connection in such a way

l set that the outlet nozzles 8 each in the connection

i socket 2 of the following connecting piece 1 inserted

ί ι are, this connector by applying a

Adhesive is secured on the outlet connection 8. On the free outlet connection 8, the end of an infusion tube can be pushed on in a known manner, the conical shape of the outlet connection makes it easier to slide on. This connection is also secured with an adhesive.

[; According to Fig. 1, the outlet stub 8 has a truncated circular cone

I ') shaped extension section 12, so that the entire ab- I port connection has a greater length than the frustoconical

1 shaped recesses 4 and 5 of the connecting pieces 2 and 3.

There is always a secure fit of the outlet connection 8

i in the recesses 4 and 5 of the connecting pieces 2 and 3

I ensures. Rolf Krayer PA Schonhcrr & Sarwe a

K 256

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As can also be seen in FIG. 1, the end of the extension section 12 of the outlet connection closes with the largest diameter a circumferential, groove-like groove 10 on / in which the edge of a in the end face of a Union nut 11 arranged circular recess is held. The union nut 11 is in relation to the connector 1 rotatable. As FIG. 4 shows, two connecting pieces 1 are fixed to one another with the aid of the union nut 11 connected, the union nut with the retaining lugs 9 of the connecting piece 2 of the lower connector 1 is engaged.

The union nut can be easily accessed from below the conical outlet stub 8 are pushed into the groove 10, the frustoconical extension of the Outlet stub 8 makes it easier to slide the union nut. In this way the user is more like that Connectors in a simple way to be able to

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Rolf Krayer

PA Schönherr & Serwe

K 256

/ j

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make a connector with any number of connections yourself.

The connector, the union nut and the bayonet bracket are advantageously made from acrylonitrile-butadiene-styrene copolymers in one injection molding process.

Claims (10)

Rolf Krayer PA Schönherr & Serwe j K 256 Protection claims: 1. Connector for infusion lines with at least two connecting pieces, which have a truncated conical tapering recess for receiving the truncated circular connecting pieces of incoming infusion lines, and with an outlet stub for connecting to an outgoing infusion line, characterized in that the outlet stub (δ) is frustoconical and that the large outer diameter (D _a ) of the outlet stub is equal to the large inner diameter (Di) of the recesses (4, 5) of the connecting stub (2, 3) and the small outer diameter (d _a ) of the outlet stub is equal to that small inside diameter (d ^) of the recesses of the connecting piece. t λ t • ) * · t *
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• · Rolf Krayer PA Schönherr & Serwe K 256 2. Connection piece according to claim 1, characterized in that that at least two connecting pieces (i) are connected to one another in such a way that the outlet nozzle (8) of a connecting piece in each case is in the recess (4) a connecting piece (2) of another connecting piece sits. 3. Connection piece according to claim 2, characterized in that the outlet nozzle (8) of the one connection piece (i) by an adhesive or the like. firmly to the connecting piece (2) the other connector is connected. 4. Connection piece according to one of claims 1 to 3, characterized in that the connecting pieces (2, 3)
near its free end on its outer wall and outwardly directed retaining lugs (9) for a bayonet lock,
Screw cap or the like. exhibit. Rolf Krayer PA Sehönherr & Serwe K 256 5. Connection piece according to claim 4, characterized in that that on the connecting piece (1) near the outlet stub (8) a partially overlapping outlet stub, Sleeve-like union nut (11), bayonet holder or the like. is rotatably arranged. 6. connecting piece according to claim 5, characterized by a circumferential, groove-like groove (1O) arranged near the outlet connection (8), in which the edge of one in the end face the union nut (11), bayonet holder or the like. arranged recess is held. 7. connecting piece according to claim 6, characterized in that that the outlet stub (8) has a frustoconical extension section (12) reaching up to the groove-like groove (10). Rolf Krayer PA SchönMr & Serwe K 256 8. Connection piece according to one of claims 1 to 7, characterized in that a connecting piece (2) with its longitudinal axis in the same line with the longitudinal axis of the Outlet stub (8) is arranged and that the longitudinal axis of the or the other connecting piece (3) at an angle (runs from 30 to the longitudinal axis of the outlet connection. 9. Connection piece according to claim 8, characterized in that that the connecting piece (3) arranged at an angle to the longitudinal axis of the outlet stub (8) has a larger one Distance from the outlet stub than the connection stub (2) lying in the same line. (^ 10. connecting piece according to one of claims 1 to 9, characterized in that the connecting piece (i), the Union nut (11) or Bajcnetthhalterung made of elastic Plastic copolymers are made.