Instrument for fluid application and clamping device
For producing a high pressure impulse, a hose bending valve is provided that comprises a loop ( 12 ) provided in a supply hose of an instrument ( 2 ) and a hose bending device ( 8 ) provided as multiple-use component. Such a valve is very simply constructed and allows the creation of steep pressure increase flanks with very high pressures up to 100 bar, as are needed for a needleless injection. The sterilization effort is minimal. Also, the material effort is minimal, if single-use components are used.
1 . An instrument ( 2 ) comprising:
a fluid applicator ( 4 );
a first fluid hose ( 5 ) that extends from a proximal end thereof to the fluid applicator ( 4 ), wherein the proximal end is configured to be connected to a first fluid source ( 3 ); and
a holder ( 11 ) that is arranged on the first fluid hose ( 5 ) that holds the first fluid hose ( 5 ) in a loop ( 12 );
wherein the holder ( 11 ) comprises at least one connection means ( 20 , 21 ) for connection with a hose bending device ( 8 ).
2 . The instrument according to claim 1 , wherein the fluid applicator ( 4 ) comprises a second fluid hose ( 9 ) that is configured to be connected at its proximal end ( 9 a ) to a second fluid source ( 10 ).
3 . The instrument according to claim 2 , wherein the second fluid hose ( 9 ) extends from its proximal end ( 9 a ) to the fluid applicator ( 4 ) without a bend and without a loop.
4 . The instrument according to claim 1 , wherein the loop ( 12 ) has a length (L) that is longer than its width (B).
5 . The instrument according to claim 1 , wherein the loop ( 12 ) comprises two legs ( 13 , 14 ) held in the holder ( 11 ) that are parallel to one another.
6 . The instrument according to claim 1 , wherein the loop ( 12 ) is immovably held in the holder ( 11 ).
7 . The instrument according to claim 1 , wherein the instrument ( 2 ) is configured as single-use instrument.
8 . A hose bending device ( 8 ) comprising:
a holder ( 11 ) configured to be fixedly positioned on first and second legs ( 13 , 14 ) of a fluid hose ( 5 ) such that the fluid hose forms a loop ( 12 ) projecting from the holder ( 11 ) with the first and second legs ( 13 , 14 ) extending along an insertion direction and being connected at a free head ( 15 ) of the loop ( 12 ) such that the holder ( 11 ) and the loop ( 12 ) form a plug;
an insertion area ( 16 ) configured to receive the loop ( 12 ) of the fluid hose ( 5 ) inserted in the insertion direction; and
an actuation device ( 22 ) arranged at or about the insertion area ( 16 ) configured to deform or release the loop ( 12 ) in a controlled manner.
9 . The hose bending device according to claim 8 , wherein the insertion area ( 16 ) comprises a slot cross-section of the actuation device ( 22 ).
10 . The hose bending device according to claim 8 , further comprising a positioning means ( 19 ) for defining a position of the loop ( 12 ) relative to the actuation device ( 22 ).
11 . The hose bending device according to claim 10 , wherein the positioning means ( 19 ) is a stop ( 26 ) arranged behind the actuation device ( 22 ) in the insertion direction.
12 . The hose bending device according to claim 10 , wherein the positioning means ( 19 ) is a plug stop ( 18 ) arranged in front of the actuation device ( 22 ) in the insertion direction.
13 . The hose bending device according to claim 8 , wherein the hose bending device ( 8 ) is configured as a sterilizable device.
14 . A system comprising an instrument ( 2 ) according to claim 1 and a hose bending device ( 8 ) comprising:
an insertion area ( 16 ) configured to receive the loop ( 12 ) of the fluid hose ( 5 ) inserted in an insertion direction; and
an actuation device ( 22 ) arranged at or about the insertion area ( 16 ) configured to deform or release the loop ( 12 ) in a controlled manner.
15 . The instrument according to claim 1 , wherein the at least one connection means ( 20 , 21 ) comprises at least one of a pin and a magnet.