流体を投与するための装置

Japanese Patent JP7401451

B2

A device for administering a fluid is provided, witha cylinder (16, 116) which has an open dispensing end (17),a piston (36) which is displaceable between a front and rear end position in the cylinder (16, 116) and is connected to a piston rod (35) that protrudes along a first direction beyond a rear end of the cylinder (16, 116) opposite the open dispensing end (17) and is guided in a receiving block (10), a nonreturn valve (18) closing the open dispensing end (17),and a tensioning device (S) which is connected to the piston rod (35, 135) and is arranged in the receiving block (10).The tensioning device (S) has a ramp (52) which is rotatable by means of a motor (12) and has a ramp track (53) extending along a helical line, wherein the ramp track (53) ascends from a first plateau along a region of inclination (S1, S2) to a second plateau and descends from the second plateau to the first plateau via a transition flank (46).The tensioning device (S) furthermore has a roller (51) which is in contact with the ramp track (53) and is mounted rotatably in a driver (50), which is connected to that end of the piston rod (35, 135) which protrudes out of the cylinder (16, 116), and therefore, upon rotation of the ramp (52), the ramp track (53) runs below the roller (51), which thereby rotates, wherein the roller (51) has a support region (55) which rests on the region of inclination (S1, S2) of the ramp track (53), and at least one laterally adjoining side region (56, 57) which has a smaller outside diameter than the support region (55) and which does not rest on the region of inclination (S1, S2) of the ramp track (53), wherein, during rotation of the ramp, both the support region (55) and the side region (56, 57) come into contact with an edge (54) of the ramp track (53), said edge connecting the second plateau to the transition flank (46).

Alterman, Frank
Kamenjin, Dominique
Schmidt, thomas
Mates, Manuel
Sauter, Robin
Safe, Daniel

JP2020551522A

December 19, 2023

March 26, 2019

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Interbet International B. Fay.

A61M5/315; A61M5/24; A61M5/30; A61M39/24

JP6509954A
JP2013153849A
JP2002539857A
JP2015506248A

US3057349

Makoto Ono
Kennori Kanayama
Yoshiyuki Tsubokura
Kazuki Shigemori
Kenji Ando
Hidehiko Ichikawa
Yoshie Sakurada
Yosuke Kawasaki
Takuya Gomibuchi
Youichi Iino
Yusuke Ichikawa
Masahiro Moriyama
Takashi Kawano
Yoshikazu Iwase
Yasufumi Shiroyama

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