초록 ▼

An infusion device with a disposable administration set which is inexpensive to manufacture. In the preferred embodiment of the present invention the disposable administration set has a plurality of elongated cam followers connected to a plate assembly, wherein the cam followers are displace in a pr

An infusion device with a disposable administration set which is inexpensive to manufacture. In the preferred embodiment of the present invention the disposable administration set has a plurality of elongated cam followers connected to a plate assembly, wherein the cam followers are displace in a predetermined sequence and forced against a delivery tube by cam means driven by rotary drive means. The device also includes an optical occlusion sensor which is synchronized to operate in phase with the movement of the cam followers to measure pressure within the delivery tube at one pump phase, thereby sensing downstream occlusions, and to measure vacuum within the delivery tube at a second pump phase, thereby sensing upstream occlusions. The occlusion sensor is optical, and measures the degree of total internal reflection at the interface of the tube and the plate assembly, occlusion in the tubing.

대표청구항 ▼

[ What is claimed is:] [1.] A system for detecting deviations in the flow of fluid through a flexible tube, the flexible tube providing fluid communication between a fluid source and a patient, the system comprising:a transparent plate in contact with the flexible tube;a light source configured to p

[ What is claimed is:] [1.] A system for detecting deviations in the flow of fluid through a flexible tube, the flexible tube providing fluid communication between a fluid source and a patient, the system comprising:a transparent plate in contact with the flexible tube;a light source configured to project light onto the transparent plate in the direction of the flexible tube; andan optical sensor disposed such that it is directed at the transparent plate and the tube and is configured to measure reflected light; andwherein said transparent plate mounts the flexible tube such that when the flexible tube is in a normal flow condition, it is in contact with the transparent plate and when the flexible tube is exposed to an upstream occlusion condition, the tube has decreased contact with the transparent plate.