Filter

The utility model belongs to the technical field of a medical instrument technique and specifically relates to a filter, an object of the utility model is to provide a be convenient for the installation, removable and reduce use cost's filter, it includes filter body, go -between and filtration membrane, and the go -between is become by a root zone body group, thereby and the end to end formationcavity loop configuration the same with filter body shape of cross section of the area body, be connected with filtration membrane on the inner wall of go -between to make filtration membrane cover whole cavitys of go -between inner wall, the outer wall of go -between and the laminating of the inner wall of filter body to make the go -between setting originally internal at filter, the filtration membrane who just sets up on the go -between separates to become two cavitys from top to bottom with the filter body, and the liquid medicine is from the upper plenum inflow of filter body, through thelower cavity of the downw