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

Active Publication Date: 2019-05-14
F HOFFMANN LA ROCHE & CO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While several designs for such dosing units are known in the art, they are rather complex, most of them expensive and / or critical for large scale

Method used

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  • Portable infusion system including step switch mechanism for valve control
  • Portable infusion system including step switch mechanism for valve control
  • Portable infusion system including step switch mechanism for valve control

Examples

Experimental program
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Embodiment Construction

[0037] figure 1 Dosing unit 100 and drive unit 200 are shown, as well as liquid drug reservoir 300 . It should be noted that only those structural and functional elements are shown which in view of the disclosure of the invention are particularly relevant. Other units such as electronic control units, power supplies, user interfaces etc. are usually present as well.

[0038] The dosing unit 100 comprises a metering pump unit 110 comprising a dosing cartridge having an aperture and a piston (elements not separately numbered) as described above in the overview. In the proximal front wall of the drug cartridge, a hole is arranged as a fluid port coupled to pump port 127a. The dosing unit also comprises a valve unit which can be alternately in the filling state 120b or the discharging state 120a. During operation, the valve unit repeatedly switches between these states. The reservoir 300 is fluidly coupled to the valve unit via the fill port 127b of the valve unit. The patien...

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PUM

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Abstract

The present disclosure is directed towards a dosing unit (100) for an ambulatory infusion system, including: - a metering pump unit (110), the pump unit including a dosing cylinder (112) and a piston (111), the piston (111) being arranged in sealing sliding engagement inside the dosing cylinder (112); - a valve unit (120), the valve unit (120) having a filling port (127b), the filling port being designed for fluidic coupling with a liquid drug reservoir (300), a draining port (127c), the draining port (127c) being designed for fluidic coupling with an infusion site interface (890), and a shut-off body (126), the shut-off body (126) being movable between a filling position where it fluidic couples the filling port (127b) with the dosing cylinder (112) and an alternative draining position where it fluidic couples the dosing cylinder (112) with the draining port (127c); - a valve driver coupler (125), the valve driver coupler (125) being coupled to or integral with the shut-off body and being the output element of a step switching mechanism. The disclosure is further directed towards a drive unit that may be used in combination with a disclosed dosing unit, an ambulatory infusion system and a method for coupling a dosing unit and a drive unit.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/14A61M5/142A61M5/168
CPCA61M5/16809A61M5/1413A61M5/14216A61M39/22A61M2005/14573A61M2039/226
Inventor H.里斯特
Owner F HOFFMANN LA ROCHE & CO AG
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