# US 10,765,806 B2 · Medication mechanism > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,765,806 B2 - Document ID: US10765806B2 - Status: Granted - Kind: B2 - Application number: 15/531,123 - Filed: 2015-11-26 - Published: 2017-11-02 - Granted: 2020-09-08 - Earliest claimed: 2014-11-27 - Assignees: Nitto Denko Corporation - Applicants: Nitto Denko Corporation - Inventors: Toru Mizutani; Takashi Tsuji; Hiroyuki Shinohara - Web page: https://patentgrep.com/patent/US10765806B2 ## CPC - A61M 5/16854: {by monitoring line pressure} - A61M 5/142: Pressure infusion, e.g. using pumps - A61M 5/14224: {Diaphragm type} - A61M 5/168: Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters - A61M 5/16881: {Regulating valves} - A61M 5/365: {Air detectors (A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626)} - A61M 2005/14268: {with a reusable and a disposable component} - A61M 2205/0244: Micromachined materials, e.g. made from silicon wafers, microelectromechanical systems [MEMS] or comprising nanotechnology - A61M 2205/18: with alarm - A61M 2205/3317: Electromagnetic, inductive or dielectric measuring means - A61M 2205/3334: Measuring or controlling the flow rate - A61M 2205/3351: Controlling upstream pump pressure - A61M 2205/3355: Controlling downstream pump pressure - A61M 2205/587: Lighting arrangements - A61M 2205/8206: battery-operated - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract The present invention relates to a dosing mechanism including: a body (2); and a disposable portion (3) that is removably attached to the body (2), in which the disposable portion (3) includes: a pump that sucks a medicine from a medicine vessel and discharges the medicine to a patient; a suction-side tube (33) that extends from the pump toward the medicine vessel; a discharge-side tube (34) that extends from the pump toward the patient; and a connector (331, 341) that is located at a front end of at least one of the suction-side tube (33) and the discharge-side tube (34), and the body (2) includes a sensor (24) in a position corresponding to the suction-side tube (33) or the discharge-side tube (34) attached to the body (2). ## Claims ### Claim 1 A dosing mechanism for dosing a patient with liquid medicine filled in a medicine vessel, comprising: a body; and a disposable portion that is removably attached to the body, wherein the disposable portion comprises: a pump that sucks the medicine from the medicine vessel and discharges the medicine to the patient; a suction-side tube that extends from the pump toward the medicine vessel; a discharge-side tube that extends from the pump toward the patient; and a connector that is located at a front end of at least one of the suction-side tube and the discharge-side tube, so as to be capable of being connected to a tube extending from the medicine vessel or the patient, wherein the body comprises a sensor in a position corresponding to the suction-side tube or the discharge-side tube attached to the body; and wherein the dosing mechanism further comprises: a relief pipe whose one end is connected to the suction-side tube while the other end is connected to the discharge-side tube, and a valve connected to the relief pipe, the valve comprising a first channel through which the medicine can pass without stopping is formed in parallel with a second channel which can be opened and closed “is amended as” a valve connected to the relief pipe, the valve comprising a first channel through which the medicine can pass without stopping is formed in parallel with a second channel through which the medicine can pass, wherein the second channel can be opened and closed. ### Claim 2 (depends on 1) The dosing mechanism according to claim 1, wherein the sensor is a pressure sensor that detects a change of pressure in the tube corresponding to the sensor based on a change in diameter of the tube. ### Claim 3 (depends on 1) The dosing mechanism according to claim 1, wherein the disposable portion comprises the connectors at front ends of the suction-side tube and the discharge-side tube respectively. ### Claim 4 (depends on 1) The dosing mechanism according to claim 1, wherein the pump is a diaphragm type pump. ### Claim 5 (depends on 1) The dosing mechanism according to claim 1, wherein the sensor comprises a movable block having a groove to which the suction-side tube or the discharge-side tube is fitted. ### Claim 6 (depends on 1) The dosing mechanism according to claim 1, wherein the body comprises a recess portion to which the disposal portion can be fitted, the disposable portion comprises a casing which receives the pump, the body comprises the sensor in a position corresponding to the suction-side tube and the discharge-side tube which are attached to the body by fitting the disposable portion to the recess portion, the casing comprises a face facing the suction-side and a face facing the discharge-side, and on the respective faces, tube connection pipes to which the suction-side tube and the discharge-side tube are connected protrude, and in a state of fitting the disposable portion to the recess portion, the respective tube connection pipes are positioned closer to the opposite side from a bottom surface of the recess portion than an intermediate position in a depth direction of the recess portion.