Portable infusion system including step switch mechanism for valve control

An infusion system, portable technology, applied in the field of connecting drug delivery unit and driving unit, can solve large-scale expensive and complicated problems
CN105764543BActive Publication Date: 2019-05-14F HOFFMANN LA ROCHE & CO AG
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
F HOFFMANN LA ROCHE & CO AG
Publication Date
2019-05-14

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Abstract

The present disclosure is directed to a drug delivery unit (100) for a portable infusion system, including: - a metering pump unit (110) including a drug delivery cartridge (112) and a drug delivery cartridge (112) disposed in sealed sliding engagement. Piston (111); valve unit (120) having: a fill port (127b) designed to be in fluid communication with the liquid medication reservoir (300); a discharge port (127c) designed to be in fluid communication with the infusion site interface (890) ); and a shut-off valve body (126) movable between a filling position and an alternate discharge position, in which the filling port (127b) is fluidly connected to the delivery cartridge (112) and in the discharge position, the delivery cartridge (112) 112) fluidly coupled to the discharge port (127c); - a driver coupling (125) coupled to or integral with the shutoff valve body and serving as the output element of the stepper switching mechanism. The present disclosure also relates to drive units, portable infusion systems, and methods of coupling a drug delivery unit and a drive unit that are combinable with the disclosed drug delivery units.
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Description

technical field

[0001] The present disclosure is in the field of dosing units for portable infusion systems. The present disclosure is also in the field of drive units for use in conjunction with dosing units and in the field of portable infusion systems for infusing liquid medication into a patient's body over an extended period of time. Furthermore, the present disclosure belongs to the field of methods for coupling a drug delivery unit and a drive unit. Background technique

[0002] Portable infusion sets are well known in the art, for example in diabetes treatment by subcutaneous continuous infusion of insulin (CSII) and in pain management or cancer treatment, and are available from a number of suppliers, such as Roche Diagnostics GmbH in Germany (Roche Diagnostics GmbH, Germany) or Medtronic MiniMed Inc., CA, USA.

[0003] These portable infusion devices or systems are usually of the syringe-driver type according to classical and well-accepted designs. A number of di...

Claims

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