1. Construction (100) for the device (200) delivering drugs, comprising: - a cap (1) defining a cavity (9) u housing (2), - wherein one of the cap (1) and body (2) comprises a recess (5), - wherein the other of the cap (1) and body (2) provided with a seal (11) comprising a sealing surface (12), - wherein the cap (1) and the housing (2) are formed so that the cap (1 ) releasably joining the housing (2), - wherein, when the cap (1) is connected, the sealing surface (12) seal (11) seals the section (10) of the cavity (9), and wherein, - a) kogd cap (1) comprises a recess (5), the recess (5) is located on the side of the seal (11) which is remote from the section (10) of the cavity (9) during disconnection of the cap (1) from the housing (2) a recess (5) moves to the side of the seal (11) which faces the sections (10) of the cavity (9), and when at least a portion of the recess (5) passes through a sealing surface (12), this part of the recess (5) forms a duct (16) between the cavity (9) and the outer sredoy- B) when the housing (2) comprises a recess (5), the seal (11) is arranged on the side of the recess (5) which is remote from the section (10) of the cavity (9) during detachable Inonii cap (1) from the housing (2), the seal (11) is moved to the side of the recess (5) which faces the sections (10) of the cavity (9) and, when the sealing surface (12) extends through at least a portion of the recess ( 5), this part of the recess (5) forms a channel (17) between the cavity (9) and the outer sredoy.2. Structure according to Claim. 1, wherein the cap (1) comprises a recess (5), wherein the housing (2) provided with a seal (11) .3. Structure according to Claim. 1 or 2, wherein the recess (5) is arranged so that the distance from it to otkrytogokontsa (7) of the cap (1) was less than to the closed end (8) of the cap (1) .4. Structure according to Claim. 1 or 2, wherein the housing (2) comprises at least one opening (29, 30, 31), which is arranged to establish communicatio
