A medicinal liquid supply control apparatus according to an embodiment of the present disclosure includes a reservoir located on a second channel to define an internal space that stores a medicinal liquid, an inlet hole and an outlet hole being formed in one portion of an outer surface of the reservoir and connected to the internal space, and a reservoir support part on which the one portion of the reservoir is fixed, an inlet connection hole connected to the inlet hole and an outlet connection hole connected to the outlet hole being formed at the reservoir support part.

An infusion pump apparatus includes a length of resilient tubing removably loadable in an infusion pump having a housing, a pumping mechanism, and a pump door. A latch member is pivotally mounted to the pump door and cooperates with a latch pin fixed on pump housing. A free-flow protection device is biased to pinch the tubing closed to stop fluid flow. The latch member has a first range of pivotal motion in a latching direction for causing the latch member to engage with the latch pin to secure the door in a closed position and a second range of pivotal motion in the latching direction for causing the latch member to actuate the free-flow protection device to unpinch the tubing and allow flow. The latch member pivots through at least a portion of the first range of pivotal motion before beginning to pivot through the second range of pivotal motion.

A system includes a flow sensor contained within a flow sensor housing, a base, and a seal. The base houses a controller that generates at least one operation modification signal, and the flow sensor is separable from and mountable onto the base. A bottom surface of the flow sensor housing includes the seal. The seal forms a liquid-tight engagement between the flow sensor housing and the base when the flow sensor is mounted onto the base.

A system for delivering an agent to a patient, comprises a delivery device. The delivery device is configured to deliver a first agent to the patient, and comprises a reservoir, a transcutaneous delivery assembly, a pumping mechanism, a control module, a power supply, and a housing. The reservoir stores the first agent. The transcutaneous delivery assembly delivers the first agent to the patient transcutaneously. The pumping mechanism receives the first agent from the reservoir and propels the first agent to the transcutaneous delivery assembly. The control module controls at least the pumping mechanism. The power supply provides energy to at least the control module and the pumping mechanism. The housing surrounds at least the pumping mechanism. Methods of delivering an agent to the patient are also described.

Provided is a wearable medical device that includes a processor or logic circuitry. The wearable medical device may include a memory storing instructions that, when executed by the processor or logic circuitry, configure the wearable medical device to determine, by the processor or the logic circuitry, that an event affecting a blood glucose measurement value trend of a user has occurred. Based on the occurrence of the event, the processor or the logic circuitry may select a mode of operation of the analyte sensor, and generate a signal indicating the selected mode of operation. The mode of operation may correspond to a sampling frequency of a physical attribute or physiological condition of a user of the wearable medical device.

A drive system for a drug delivery device is described. The drive system comprises an axial drive component configured to drive advancement of a stopper sealing a container; a variable rate drive drives advancement of the axial drive component and a controller controls the variable rate drive to deliver a first volume of medicament at a first rate, and a second volume of medicament at a second rate. The controller is configured to: optionally, identify a start point for delivery of medicament from the container, the start point being identified as completion of a predefined preparatory event; drive the variable rate drive at a first speed during a first phase from the identified start point to deliver the first volume of medicament at the first rate; drive the variable rate drive at a second speed during a second phase to deliver the second volume of medicament at the second rate.

An administration set, system, and method for administering an infusion fluid for delivering an infusion fluid into a patients anatomic space includes an infusion fluid path having a first portion to connect with a source of the infusion fluid and a second portion to deliver the infusion fluid into the patients anatomic space; and a flow rate sensor disposed in the infusion fluid path between the first and second portion to determine a flow rate measurement of the infusion fluid and to generate a signal indicative of the flow rate measurement to control the flow rate of the infusion fluid through the fluid path.

Methods and devices for accurately pumping small quantities of liquid to a patient with a broad range of flow and low cost.

A system and method for calibrating an IV pump infusion system tube comprises a fluid source, an infusion system comprising, an IV pump, a drive unit, a chamber with known constant volume, a control unit, and IV tubing with a known inner diameter tolerance, and a switch and magnetic floating object. The system administers medicinal fluid, calculates the flow rate of the medicinal fluid in the chamber by measuring the time the switch is activated as medicinal fluid rises in the chamber, compares the calculated flow rate with a set flow rate of the IV pump input in the control unit prior to infusion, and adjusts the IV pump and flow rate based on the compared deviations for more accurate delivery to a patient. This configuration may provide a more precise delivery rate of medicinal fluid, preventing harm to the patient and waste of medicine.

A system includes a flow sensor contained within a flow sensor housing, a base, and a seal. The base houses a controller that generates at least one operation modification signal, and the flow sensor is separable from and mountable onto the base. A bottom surface of the flow sensor housing includes the seal. The seal forms a liquid-tight engagement between the flow sensor housing and the base when the flow sensor is mounted onto the base.