DETAILED DESCRIPTION OF THE INVENTION An injection hose 1 includes a base body 2 having a substantially hollow cylindrical wall and thus defining a central cylindrical passage channel 3 that extends over the length of the hose.
Injection liquid can be introduced into the passage channel 3 from one or both ends of the invention hose 1 or optionally also at connections provided between the ends, in order to distribute the injection liquid over the length of a joint that is to be sealed and is assigned by the injection hose 1.
Four depressions 4, 5, 6 and 7, which extend over the entire length of the base body 2, are provided at identical angular intervals around the circumference of the base body 2.
To produce a flow connection between the passage channel 3 and the depressions 4, 5, 6, 7, the hose wall has radial openings 8, 9, 10 and 11, which are distributed over the length of the hose and which open, on the one hand, into the passage channel 3 and, on the other hand, into the depressions 4, 5, 6 and 7.
Disposed in the depressions 4, 5, 6 and 7 are respective strips 12, 13, 14 and 15, which are made of a reversibly compressible material and whose shape is complementary to the shape of the depressions 4, 5, 6 and 7.
The base body 2 and the strips 12, 13, 14 and 15 which are disposed in the depressions 4, 5, 6 and 7 and which have outer surfaces substantially flush with the outer circumference of the base body 2, are enveloped by a hose 16 made of a thin liquid-permeable material or a material that dissolves under the effect of the injection liquid.
In this manner the strips 12, 13, 14, and 15 are held securely in their depressions 4, 5, 6 and 7, even if the pressure of the injection liquid is applied from the inside.
Concrete components are reliably prevented from penetrating from the outside through the openings 8, 9, 10 and 11 into the passage channel 3, since with the pressure raised from the outside the strips 12, 13, 14 and 15 merely close even better then openings 8, 9, 10 and 11 that are arranged in longitudinal rows
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Vasodialators 
