The utility model discloses an anti-pulling
catheter, and belongs to the technical field of
medical instruments. Comprising an inner tube, an outer tube arranged outside the inner tube in a sleeving mode and an
insertion body fixed to the head end of the inner tube and communicated with the inner tube, the outer tube and the inner tube are connected in a sealed mode to form a partition cavity, a
balloon is arranged at the position, located at the partition cavity, of the outer tube, and a
liquid injection tube is communicated with the interior of the
balloon and penetrates out of the partition cavity; the inner tube comprises an end tube connected with an
insertion body and a
tail tube in the other direction, the end tube and the
tail tube are in sealed communication connection through a connector structure, the connector structure is located in the
balloon, and the connector structure is used for breaking connection between the end tube and the
tail tube when being subjected to axial tension; when a user pulls the
catheter accidentally, the end tube and the tail tube are disconnected at the connector structure, liquid in the balloon can enter the tail tube and be rapidly discharged from the tail tube, the balloon is shrunk, at the moment, the
catheter cannot be left in the bladder or pulled out, and damage to the bladder and the
urethra is prevented.